opkg: re-arrange source code into sub-directories

git-svn-id: http://opkg.googlecode.com/svn/trunk@33 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

78 files changed, 14681 insertions, 0 deletions

diff --git a/libopkg/Makefile.am b/libopkg/Makefile.am
new file mode 100644
index 0000000..ad4de4d
--- /dev/null
+++ b/libopkg/Makefile.am
@@ -0,0 +1,76 @@
+
+ALL_CFLAGS=-g -O -Wall -DHOST_CPU_STR=\"@host_cpu@\" -DBUILD_CPU=@build_cpu@ -DLIBDIR=\"@libdir@\" -DOPKGLIBDIR=\"@opkglibdir@\" -DDATADIR=\"@datadir@\" -I$(top_builddir)
+
+libopkg_includedir=$(includedir)/libopkg
+
+libopkg_include_HEADERS= \
+	args.h \
+	conffile.h \
+	conffile_list.h \
+	config.h \
+	hash_table.h \
+	includes.h \
+	opkg_conf.h \
+	opkg.h \
+	opkg_message.h \
+	opkg_state.h \
+	nv_pair.h \
+	nv_pair_list.h \
+	pkg_depends.h \
+	pkg_dest.h \
+	pkg_dest_list.h \
+	pkg.h \
+	pkg_hash.h \
+	pkg_src.h \
+	pkg_src_list.h \
+	pkg_vec.h \
+	str_list.h \
+	void_list.h \
+	libopkg.h 
+
+libopkg_la_LIBADD = $(top_builddir)/libbb/libbb.la $(CURL_LIBS) $(GPGME_LIBS)
+
+opkg_core_sources = args.c args.h opkg.c \
+		    user.c user.h 
+opkg_libcore_sources = args.c args.h libopkg.c libopkg.h opkg.h\
+		    user.c user.h opkg_state.c opkg_state.h
+opkg_cmd_sources = opkg_cmd.c opkg_cmd.h \
+		   opkg_configure.c opkg_configure.h \
+		   opkg_download.c opkg_download.h \
+		   opkg_install.c opkg_install.h \
+		   opkg_upgrade.c opkg_upgrade.h \
+		   opkg_remove.c opkg_remove.h
+opkg_db_sources = opkg_conf.c opkg_conf.h \
+		  opkg_utils.c opkg_utils.h pkg.c pkg.h hash_table.h \
+		  pkg_depends.c pkg_depends.h pkg_extract.c pkg_extract.h \
+		  hash_table.c pkg_hash.c pkg_hash.h pkg_parse.c pkg_parse.h \
+		  pkg_vec.c pkg_vec.h
+opkg_list_sources = conffile.c conffile.h conffile_list.c conffile_list.h \
+		    nv_pair.c nv_pair.h nv_pair_list.c nv_pair_list.h \
+		    pkg_dest.c pkg_dest.h pkg_dest_list.c pkg_dest_list.h \
+		    pkg_src.c pkg_src.h pkg_src_list.c pkg_src_list.h \
+		    str_list.c str_list.h void_list.c void_list.h
+opkg_util_sources = file_util.c file_util.h opkg_message.h opkg_message.c md5.c md5.h \
+		    sprintf_alloc.c sprintf_alloc.h str_util.c str_util.h \
+		    xregex.c xregex.h xsystem.c xsystem.h
+
+libopkg_la_SOURCES = \
+	$(opkg_libcore_sources) \
+	$(opkg_cmd_sources) $(opkg_db_sources) \
+	$(opkg_util_sources) $(opkg_list_sources)
+
+libopkg_la_CFLAGS = -DOPKG_LIB $(ALL_CFLAGS)  $(CURL_CFLAGS) $(GPGME_CFLAGS)
+lib_LTLIBRARIES = libopkg.la
+
+
+noinst_PROGRAMS = opkg_hash_test opkg_extract_test
+
+opkg_hash_test_LDADD = $(top_builddir)/libbb/libbb.la
+opkg_hash_test_SOURCES = opkg_hash_test.c $(opkg_db_sources) $(opkg_util_sources) $(opkg_list_sources)
+opkg_hash_test_CFLAGS = $(ALL_CFLAGS)
+
+opkg_extract_test_LDADD = $(top_builddir)/libbb/libbb.la
+opkg_extract_test_SOURCES = opkg_extract_test.c $(opkg_db_sources) $(opkg_util_sources) $(opkg_list_sources)
+opkg_extract_test_CFLAGS = $(ALL_CFLAGS)
+
+
diff --git a/libopkg/args.c b/libopkg/args.c
new file mode 100644
index 0000000..99f3e12
--- /dev/null
+++ b/libopkg/args.c
@@ -0,0 +1,317 @@
+/* args.c - parse command-line args
+ 
+  Carl D. Worth
+
+  Copyright 2001 University of Southern California
+ 
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2, or (at your option)
+  any later version.
+ 
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+ */
+
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "opkg.h"
+
+#include "config.h"
+#include "args.h"
+#include "sprintf_alloc.h"
+
+static void print_version(void);
+
+enum long_args_opt
+{
+     ARGS_OPT_FORCE_DEFAULTS = 129,
+     ARGS_OPT_FORCE_DEPENDS,
+     ARGS_OPT_FORCE_OVERWRITE,
+     ARGS_OPT_FORCE_DOWNGRADE,
+     ARGS_OPT_FORCE_REINSTALL,
+     ARGS_OPT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES,
+     ARGS_OPT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES,
+     ARGS_OPT_FORCE_SPACE,
+     ARGS_OPT_NOACTION,
+     ARGS_OPT_NODEPS,
+     ARGS_OPT_VERBOSE_WGET,
+     ARGS_OPT_VERBOSITY,
+     ARGS_OPT_MULTIPLE_PROVIDERS
+};
+
+int args_init(args_t *args)
+{
+     char *conf_file_dir;
+
+     memset(args, 0, sizeof(args_t));
+
+     args->dest = ARGS_DEFAULT_DEST;
+
+     conf_file_dir = getenv("OPKG_CONF_DIR");
+     if (conf_file_dir == NULL || conf_file_dir[0] == '\0') {
+	  conf_file_dir = ARGS_DEFAULT_CONF_FILE_DIR;
+     }
+     sprintf_alloc(&args->conf_file, "%s/%s", conf_file_dir,
+		   ARGS_DEFAULT_CONF_FILE_NAME);
+
+     args->force_defaults = ARGS_DEFAULT_FORCE_DEFAULTS;
+     args->force_depends = ARGS_DEFAULT_FORCE_DEPENDS;
+     args->force_overwrite = ARGS_DEFAULT_FORCE_OVERWRITE;
+     args->force_downgrade = ARGS_DEFAULT_FORCE_DOWNGRADE;
+     args->force_reinstall = ARGS_DEFAULT_FORCE_REINSTALL;
+     args->force_removal_of_dependent_packages = ARGS_DEFAULT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES;
+     args->force_removal_of_essential_packages = ARGS_DEFAULT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES;
+     args->noaction = ARGS_DEFAULT_NOACTION;
+     args->nodeps = ARGS_DEFAULT_NODEPS;
+     args->verbose_wget = ARGS_DEFAULT_VERBOSE_WGET;
+     args->verbosity = ARGS_DEFAULT_VERBOSITY;
+     args->offline_root = ARGS_DEFAULT_OFFLINE_ROOT;
+     args->offline_root_pre_script_cmd = ARGS_DEFAULT_OFFLINE_ROOT_PRE_SCRIPT_CMD;
+     args->offline_root_post_script_cmd = ARGS_DEFAULT_OFFLINE_ROOT_POST_SCRIPT_CMD;
+     args->multiple_providers = 0;
+     args->nocheckfordirorfile = 0;
+     args->noreadfeedsfile = 0;
+
+     return 1;
+}
+
+void args_deinit(args_t *args)
+{
+     free(args->conf_file);
+     args->conf_file = NULL;
+}
+
+int args_parse(args_t *args, int argc, char *argv[])
+{
+     int c;
+     int option_index = 0;
+     int parse_err = 0;
+     static struct option long_options[] = {
+	  {"query-all", 0, 0, 'A'},
+	  {"conf-file", 1, 0, 'f'},
+	  {"conf", 1, 0, 'f'},
+	  {"dest", 1, 0, 'd'},
+	  {"force-defaults", 0, 0, ARGS_OPT_FORCE_DEFAULTS},
+	  {"force_defaults", 0, 0, ARGS_OPT_FORCE_DEFAULTS},
+	  {"force-depends", 0, 0, ARGS_OPT_FORCE_DEPENDS},
+	  {"force_depends", 0, 0, ARGS_OPT_FORCE_DEPENDS},
+	  {"force-overwrite", 0, 0, ARGS_OPT_FORCE_OVERWRITE},
+	  {"force_overwrite", 0, 0, ARGS_OPT_FORCE_OVERWRITE},
+	  {"force_downgrade", 0, 0, ARGS_OPT_FORCE_DOWNGRADE},
+	  {"force-downgrade", 0, 0, ARGS_OPT_FORCE_DOWNGRADE},
+	  {"force-reinstall", 0, 0, ARGS_OPT_FORCE_REINSTALL},
+	  {"force_reinstall", 0, 0, ARGS_OPT_FORCE_REINSTALL},
+	  {"force-space", 0, 0, ARGS_OPT_FORCE_SPACE},
+	  {"force_space", 0, 0, ARGS_OPT_FORCE_SPACE},
+	  {"recursive", 0, 0,
+	   ARGS_OPT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES},
+	  {"force-removal-of-dependent-packages", 0, 0,
+	   ARGS_OPT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES},
+	  {"force_removal_of_dependent_packages", 0, 0,
+	   ARGS_OPT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES},
+	  {"force-removal-of-essential-packages", 0, 0,
+	   ARGS_OPT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES},
+	  {"force_removal_of_essential_packages", 0, 0,
+	   ARGS_OPT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES},
+	  {"multiple-providers", 0, 0, ARGS_OPT_MULTIPLE_PROVIDERS},
+	  {"multiple_providers", 0, 0, ARGS_OPT_MULTIPLE_PROVIDERS},
+	  {"noaction", 0, 0, ARGS_OPT_NOACTION},
+	  {"nodeps", 0, 0, ARGS_OPT_NODEPS},
+	  {"offline", 1, 0, 'o'},
+	  {"offline-root", 1, 0, 'o'},
+	  {"test", 0, 0, ARGS_OPT_NOACTION},
+	  {"tmp-dir", 1, 0, 't'},
+	  {"verbose-wget", 0, 0, ARGS_OPT_VERBOSE_WGET},
+	  {"verbose_wget", 0, 0, ARGS_OPT_VERBOSE_WGET},
+	  {"verbosity", 2, 0, 'V'},
+	  {"version", 0, 0, 'v'},
+	  {0, 0, 0, 0}
+     };
+
+     while (1) {
+	  c = getopt_long_only(argc, argv, "Ad:f:no:t:vV:", long_options, &option_index);
+	  if (c == -1)
+	       break;
+
+	  switch (c) {
+	  case 'A':
+	       args->query_all = 1;
+	       break;
+	  case 'd':
+	       args->dest = optarg;
+	       break;
+	  case 'f':
+	       free(args->conf_file);
+	       args->conf_file = strdup(optarg);
+	       break;
+	  case 'o':
+	       args->offline_root = optarg;
+	       break;
+	  case 'n':
+	       args->noaction = 1;
+	       break;
+	  case 't':
+	       args->tmp_dir = strdup(optarg);
+	       break;
+	  case 'v':
+	       print_version();
+	       exit(0);
+	  case 'V':
+	  case ARGS_OPT_VERBOSITY:
+	       if (optarg)
+		    args->verbosity = atoi(optarg);
+	       else
+		    args->verbosity += 1;
+	       break;
+	  case ARGS_OPT_FORCE_DEFAULTS:
+	       args->force_defaults = 1;
+	       break;
+	  case ARGS_OPT_FORCE_DEPENDS:
+	       args->force_depends = 1;
+	       break;
+	  case ARGS_OPT_FORCE_OVERWRITE:
+	       args->force_overwrite = 1;
+	       break;
+	  case ARGS_OPT_FORCE_DOWNGRADE:
+	       args->force_downgrade = 1;
+	       break;
+	  case ARGS_OPT_FORCE_REINSTALL:
+	       args->force_reinstall = 1;
+	       break;
+	  case ARGS_OPT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES:
+	       args->force_removal_of_essential_packages = 1;
+	       break;
+	  case ARGS_OPT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES:
+	       args->force_removal_of_dependent_packages = 1;
+	       break;
+	  case ARGS_OPT_FORCE_SPACE:
+	       args->force_space = 1;
+	       break;
+	  case ARGS_OPT_VERBOSE_WGET:
+	       args->verbose_wget = 1;
+	       break;
+	  case ARGS_OPT_MULTIPLE_PROVIDERS:
+	       args->multiple_providers = 1;
+	       break;
+	  case ARGS_OPT_NODEPS:
+	       args->nodeps = 1;
+	       break;
+	  case ARGS_OPT_NOACTION:
+	       args->noaction = 1;
+	       break;
+	  case ':':
+	       parse_err++;
+	       break;
+	  case '?':
+	       parse_err++;
+	       break;
+	  default:
+	       printf("Confusion: getopt_long returned %d\n", c);
+	  }
+     }
+    
+     if (parse_err) {
+	  return -parse_err;
+     } else {
+	  return optind;
+     }
+}
+
+void args_usage(char *complaint)
+{
+     if (complaint) {
+	  fprintf(stderr, "opkg: %s\n", complaint);
+     }
+     print_version();
+     fprintf(stderr, "usage: opkg [options...] sub-command [arguments...]\n");
+     fprintf(stderr, "where sub-command is one of:\n");
+    
+     fprintf(stderr, "\nPackage Manipulation:\n");
+     fprintf(stderr, "\tupdate  		Update list of available packages\n");
+     fprintf(stderr, "\tupgrade			Upgrade all installed packages to latest version\n");
+     fprintf(stderr, "\tinstall <pkg>		Download and install <pkg> (and dependencies)\n");
+     fprintf(stderr, "\tinstall <file.ipk>	Install package <file.ipk>\n");
+     fprintf(stderr, "\tconfigure [<pkg>]	Configure unpacked packages\n");
+     fprintf(stderr, "\tremove <pkg|regexp>	Remove package <pkg|packages following regexp>\n");
+     fprintf(stderr, "\tflag <flag> <pkg> ...	Flag package(s) <pkg>\n");
+     fprintf(stderr, "\t <flag>=hold|noprune|user|ok|installed|unpacked (one per invocation)	\n");
+    
+     fprintf(stderr, "\nInformational Commands:\n");
+     fprintf(stderr, "\tlist    		List available packages and descriptions\n");
+     fprintf(stderr, "\tlist_installed		List all and only the installed packages and description \n");
+     fprintf(stderr, "\tfiles <pkg>		List all files belonging to <pkg>\n");
+     fprintf(stderr, "\tsearch <file|regexp>		Search for a package providing <file>\n");
+#ifndef OPKG_LIB
+     fprintf(stderr, "\tinfo [pkg|regexp [<field>]]	Display all/some info fields for <pkg> or all\n");
+     fprintf(stderr, "\tstatus [pkg|regexp [<field>]]	Display all/some status fields for <pkg> or all\n");
+#else
+     fprintf(stderr, "\tinfo [pkg|regexp]		Display all info for <pkg>\n");
+     fprintf(stderr, "\tstatus [pkg|regexp]		Display all status for <pkg>\n");
+#endif
+     fprintf(stderr, "\tdownload <pkg>		Download <pkg> to current directory.\n");
+     fprintf(stderr, "\tcompare_versions <v1> <op> <v2>\n");
+     fprintf(stderr, "\t                          compare versions using <= < > >= = << >>\n");
+     fprintf(stderr, "\tprint_architecture      prints the architecture.\n");
+     fprintf(stderr, "\tprint_installation_architecture\n");
+     fprintf(stderr, "\twhatdepends [-A] [pkgname|pat]+\n");
+     fprintf(stderr, "\twhatdependsrec [-A] [pkgname|pat]+\n");
+     fprintf(stderr, "\twhatprovides [-A] [pkgname|pat]+\n");
+     fprintf(stderr, "\twhatconflicts [-A] [pkgname|pat]+\n");
+     fprintf(stderr, "\twhatreplaces [-A] [pkgname|pat]+\n");
+     fprintf(stderr, "\t                        prints the installation architecture.\n");    
+     fprintf(stderr, "\nOptions:\n");
+     fprintf(stderr, "\t-A                      Query all packages with whatdepends, whatprovides, whatreplaces, whatconflicts\n"); 
+     fprintf(stderr, "\t-V <level>               Set verbosity level to <level>. If no value is\n");
+     fprintf(stderr, "\t--verbosity <level>      provided increase verbosity by one. Verbosity levels:\n");
+     fprintf(stderr, "\t                         0 errors only\n");
+     fprintf(stderr, "\t                         1 normal messages (default)\n");
+     fprintf(stderr, "\t                         2 informative messages\n");
+     fprintf(stderr, "\t                         3 debug output\n");
+     fprintf(stderr, "\t-f <conf_file>		Use <conf_file> as the opkg configuration file\n");
+     fprintf(stderr, "\t-conf <conf_file>	Default configuration file location\n");
+     fprintf(stderr, "				is %s/%s\n", ARGS_DEFAULT_CONF_FILE_DIR, ARGS_DEFAULT_CONF_FILE_NAME);
+     fprintf(stderr, "\t-d <dest_name>		Use <dest_name> as the the root directory for\n");
+     fprintf(stderr, "\t-dest <dest_name>	package installation, removal, upgrading.\n");
+     fprintf(stderr, "				<dest_name> should be a defined dest name from\n");
+     fprintf(stderr, "				the configuration file, (but can also be a\n");
+     fprintf(stderr, "				directory name in a pinch).\n");
+     fprintf(stderr, "\t-o <offline_root>	Use <offline_root> as the root directory for\n");
+     fprintf(stderr, "\t-offline <offline_root>	offline installation of packages.\n");
+     fprintf(stderr, "\t-verbose_wget		more wget messages\n");
+    
+     fprintf(stderr, "\tForce Options (use when opkg is too smart for its own good):\n");
+     fprintf(stderr, "\t-force-depends		Make dependency checks warnings instead of errors\n");
+     fprintf(stderr, "\t				Install/remove package in spite of failed dependences\n");
+     fprintf(stderr, "\t-force-defaults		Use default options for questions asked by opkg.\n");
+     fprintf(stderr, "				(no prompts). Note that this will not prevent\n");
+     fprintf(stderr, "				package installation scripts from prompting.\n");
+     fprintf(stderr, "\t-force-reinstall 	Allow opkg to reinstall a package.\n");
+     fprintf(stderr, "\t-force-overwrite 	Allow opkg to overwrite files from another package during an install.\n");
+     fprintf(stderr, "\t-force-downgrade 	Allow opkg to downgrade packages.\n");
+     fprintf(stderr, "\t-force_space            Install even if there does not seem to be enough space.\n");
+     fprintf(stderr, "\t-noaction               No action -- test only\n");
+     fprintf(stderr, "\t-nodeps                 Do not follow dependences\n");
+     fprintf(stderr, "\t-force-removal-of-dependent-packages\n");
+     fprintf(stderr, "\t-recursive	 	Allow opkg to remove package and all that depend on it.\n");
+     fprintf(stderr, "\t-test                   No action -- test only\n");
+     fprintf(stderr, "\t-t	 	        Specify tmp-dir.\n");
+     fprintf(stderr, "\t--tmp-dir 	        Specify tmp-dir.\n");
+     fprintf(stderr, "\n");
+     fprintf(stderr, "\tregexp could be something like 'pkgname*' '*file*' or similar\n");
+     fprintf(stderr, "\teg: opkg info 'libstd*'  or opkg search '*libop*' or opkg remove 'libncur*'\n");
+     /* -force-removal-of-essential-packages	Let opkg remove essential packages. 
+	Using this option is almost guaranteed to break your system, hence this option
+	is not even advertised in the usage statement. */
+     exit(1);
+}
+
+static void print_version(void)
+{
+     fprintf(stderr, "opkg version %s\n", VERSION);
+}
diff --git a/libopkg/args.h b/libopkg/args.h
new file mode 100644
index 0000000..a470778
--- /dev/null
+++ b/libopkg/args.h
@@ -0,0 +1,72 @@
+/* args.h - parse command-line args
+
+  Carl D. Worth
+
+  Copyright 2001 University of Southern California
+ 
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2, or (at your option)
+  any later version.
+ 
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+*/
+
+#ifndef ARGS_H
+#define ARGS_H
+
+struct args
+{
+    char *conf_file;
+    char *dest;
+    char *tmp_dir;
+    int force_defaults;
+    int force_depends;
+    int force_overwrite;
+    int force_downgrade;
+    int force_reinstall;
+    int force_removal_of_essential_packages;
+    int force_removal_of_dependent_packages;
+    int force_space;
+    int noaction;
+    int nodeps;
+    int multiple_providers;
+    int query_all;
+    int verbose_wget;
+    int verbosity;
+    int nocheckfordirorfile;
+    int noreadfeedsfile;
+    char *offline_root;
+    char *offline_root_pre_script_cmd;
+    char *offline_root_post_script_cmd;
+};
+typedef struct args args_t;
+
+#define ARGS_DEFAULT_CONF_FILE_DIR "/etc"
+#define ARGS_DEFAULT_CONF_FILE_NAME "opkg.conf"
+#define ARGS_DEFAULT_DEST NULL
+#define ARGS_DEFAULT_FORCE_DEFAULTS 0
+#define ARGS_DEFAULT_FORCE_DEPENDS 0
+#define ARGS_DEFAULT_FORCE_OVERWRITE 0 
+#define ARGS_DEFAULT_FORCE_DOWNGRADE 0 
+#define ARGS_DEFAULT_FORCE_REINSTALL 0
+#define ARGS_DEFAULT_FORCE_REMOVAL_OF_ESSENTIAL_PACKAGES 0
+#define ARGS_DEFAULT_FORCE_REMOVAL_OF_DEPENDENT_PACKAGES 0
+#define ARGS_DEFAULT_FORCE_SPACE 0
+#define ARGS_DEFAULT_OFFLINE_ROOT NULL
+#define ARGS_DEFAULT_OFFLINE_ROOT_PRE_SCRIPT_CMD NULL
+#define ARGS_DEFAULT_OFFLINE_ROOT_POST_SCRIPT_CMD NULL
+#define ARGS_DEFAULT_NOACTION 0
+#define ARGS_DEFAULT_NODEPS 0
+#define ARGS_DEFAULT_VERBOSE_WGET 0
+#define ARGS_DEFAULT_VERBOSITY 1
+
+int args_init(args_t *args);
+void args_deinit(args_t *args);
+int args_parse(args_t *args, int argc, char *argv[]);
+void args_usage(char *complaint);
+
+#endif
diff --git a/libopkg/conffile.c b/libopkg/conffile.c
new file mode 100644
index 0000000..5f41cc1
--- /dev/null
+++ b/libopkg/conffile.c
@@ -0,0 +1,64 @@
+/* conffile.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "opkg.h"
+#include "opkg_message.h"
+
+#include "conffile.h"
+#include "file_util.h"
+#include "sprintf_alloc.h"
+
+int conffile_init(conffile_t *conffile, const char *file_name, const char *md5sum)
+{
+    return nv_pair_init(conffile, file_name, md5sum);
+}
+
+void conffile_deinit(conffile_t *conffile)
+{
+    nv_pair_deinit(conffile);
+}
+
+int conffile_has_been_modified(opkg_conf_t *conf, conffile_t *conffile)
+{
+    char *md5sum;
+    char *filename = conffile->name;
+    char *root_filename;
+    int ret;
+
+    if (conffile->value == NULL) {
+	 opkg_message(conf, OPKG_NOTICE, "%s: conffile %s has no md5sum\n", __FUNCTION__, conffile->name);
+	 return 1;
+    }
+
+    root_filename = root_filename_alloc(conf, filename);
+
+    md5sum = file_md5sum_alloc(root_filename);
+
+    ret = strcmp(md5sum, conffile->value);
+    if (ret) {
+      opkg_message(conf, OPKG_NOTICE, "%s: conffile %s: \t\nold md5=%s \t\nnew md5=%s\n", __FUNCTION__,
+              conffile->name, md5sum, conffile->value);
+    }
+
+    free(root_filename);
+    free(md5sum);
+
+    return ret;
+}
diff --git a/libopkg/conffile.h b/libopkg/conffile.h
new file mode 100644
index 0000000..130d1d8
--- /dev/null
+++ b/libopkg/conffile.h
@@ -0,0 +1,30 @@
+/* conffile.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef CONFFILE_H
+#define CONFFILE_H
+
+#include "nv_pair.h"
+
+typedef struct nv_pair conffile_t;
+
+int conffile_init(conffile_t *conffile, const char *file_name, const char *md5sum);
+void conffile_deinit(conffile_t *conffile);
+int conffile_has_been_modified(struct opkg_conf *conf, conffile_t *conffile);
+
+#endif
+
diff --git a/libopkg/conffile_list.c b/libopkg/conffile_list.c
new file mode 100644
index 0000000..27d48d5
--- /dev/null
+++ b/libopkg/conffile_list.c
@@ -0,0 +1,47 @@
+/* conffile_list.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "conffile_list.h"
+
+int conffile_list_init(conffile_list_t *list)
+{
+    return nv_pair_list_init(list);
+}
+
+void conffile_list_deinit(conffile_list_t *list)
+{
+    nv_pair_list_deinit(list);
+}
+
+conffile_t *conffile_list_append(conffile_list_t *list, const char *file_name,
+			 const char *md5sum)
+{
+    return nv_pair_list_append(list, file_name, md5sum);
+}
+
+int conffile_list_push(conffile_list_t *list, conffile_t *data)
+{
+    return nv_pair_list_push(list, data);
+}
+
+conffile_list_elt_t *conffile_list_pop(conffile_list_t *list)
+{
+    return nv_pair_list_pop(list);
+}
+
diff --git a/libopkg/conffile_list.h b/libopkg/conffile_list.h
new file mode 100644
index 0000000..a5daac9
--- /dev/null
+++ b/libopkg/conffile_list.h
@@ -0,0 +1,36 @@
+/* conffile_list.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef CONFFILE_LIST_H
+#define CONFFILE_LIST_H
+
+#include "conffile.h"
+#include "nv_pair_list.h"
+
+typedef struct nv_pair_list_elt conffile_list_elt_t;
+typedef struct nv_pair_list conffile_list_t;
+
+int conffile_list_init(conffile_list_t *list);
+void conffile_list_deinit(conffile_list_t *list);
+
+conffile_t *conffile_list_append(conffile_list_t *list, const char *name,
+			       const char *root_dir);
+int conffile_list_push(conffile_list_t *list, conffile_t *data);
+conffile_list_elt_t *conffile_list_pop(conffile_list_t *list);
+
+#endif
+
diff --git a/libopkg/file_util.c b/libopkg/file_util.c
new file mode 100644
index 0000000..da8a1cd
--- /dev/null
+++ b/libopkg/file_util.c
@@ -0,0 +1,177 @@
+/* file_util.c - convenience routines for common stat operations
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "sprintf_alloc.h"
+#include "file_util.h"
+#include "md5.h"
+#include "libbb/libbb.h"
+#undef strlen
+
+int file_exists(const char *file_name)
+{
+    int err;
+    struct stat stat_buf;
+
+    err = stat(file_name, &stat_buf);
+    if (err == 0) {
+	return 1;
+    } else {
+	return 0;
+    }
+}
+
+int file_is_dir(const char *file_name)
+{
+    int err;
+    struct stat stat_buf;
+
+    err = stat(file_name, &stat_buf);
+    if (err) {
+	return 0;
+    }
+
+    return S_ISDIR(stat_buf.st_mode);
+}
+
+/* read a single line from a file, stopping at a newline or EOF.
+   If a newline is read, it will appear in the resulting string.
+   Return value is a malloc'ed char * which should be freed at
+   some point by the caller.
+
+   Return value is NULL if the file is at EOF when called.
+*/
+#define FILE_READ_LINE_BUF_SIZE 1024
+char *file_read_line_alloc(FILE *file)
+{
+    char buf[FILE_READ_LINE_BUF_SIZE];
+    int buf_len;
+    char *line = NULL;
+    int line_size = 0;
+
+    memset(buf, 0, FILE_READ_LINE_BUF_SIZE);
+    while (fgets(buf, FILE_READ_LINE_BUF_SIZE, file)) {
+	buf_len = strlen(buf);
+	if (line) {
+	    line_size += buf_len;
+	    line = realloc(line, line_size);
+	    if (line == NULL) {
+		fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+		break;
+	    }
+	    strcat(line, buf);
+	} else {
+	    line_size = buf_len + 1;
+	    line = strdup(buf);
+	}
+	if (buf[buf_len - 1] == '\n') {
+	    break;
+	}
+    }
+
+    return line;
+}
+
+int file_move(const char *src, const char *dest)
+{
+    int err;
+
+    err = rename(src, dest);
+
+    if (err && errno == EXDEV) {
+	err = file_copy(src, dest);
+	unlink(src);
+    } else if (err) {
+	fprintf(stderr, "%s: ERROR: failed to rename %s to %s: %s\n",
+		__FUNCTION__, src, dest, strerror(errno));
+    }
+
+    return err;
+}
+
+/* I put these here to keep libbb dependencies from creeping all over
+   the opkg code */
+int file_copy(const char *src, const char *dest)
+{
+    int err;
+
+    err = copy_file(src, dest, FILEUTILS_FORCE | FILEUTILS_PRESERVE_STATUS);
+    if (err) {
+	fprintf(stderr, "%s: ERROR: failed to copy %s to %s\n",
+		__FUNCTION__, src, dest);
+    }
+
+    return err;
+}
+
+int file_mkdir_hier(const char *path, long mode)
+{
+    return make_directory(path, mode, FILEUTILS_RECUR);
+}
+
+char *file_md5sum_alloc(const char *file_name)
+{
+    static const int md5sum_bin_len = 16;
+    static const int md5sum_hex_len = 32;
+
+    static const unsigned char bin2hex[16] = {
+	'0', '1', '2', '3',
+	'4', '5', '6', '7',
+	'8', '9', 'a', 'b',
+	'c', 'd', 'e', 'f'
+    };
+
+    int i, err;
+    FILE *file;
+    unsigned char *md5sum_hex;
+    unsigned char md5sum_bin[md5sum_bin_len];
+
+    md5sum_hex = malloc(md5sum_hex_len + 1);
+    if (md5sum_hex == NULL) {
+	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	return strdup("");
+    }
+
+    file = fopen(file_name, "r");
+    if (file == NULL) {
+	fprintf(stderr, "%s: Failed to open file %s: %s\n",
+		__FUNCTION__, file_name, strerror(errno));
+	return strdup("");
+    }
+
+    err = md5_stream(file, md5sum_bin);
+    if (err) {
+	fprintf(stderr, "%s: ERROR computing md5sum for %s: %s\n",
+		__FUNCTION__, file_name, strerror(err));
+	return strdup("");
+    }
+
+    fclose(file);
+
+    for (i=0; i < md5sum_bin_len; i++) {
+	md5sum_hex[i*2] = bin2hex[md5sum_bin[i] >> 4];
+	md5sum_hex[i*2+1] = bin2hex[md5sum_bin[i] & 0xf];
+    }
+    
+    md5sum_hex[md5sum_hex_len] = '\0';
+    
+    return md5sum_hex;
+}
+
diff --git a/libopkg/file_util.h b/libopkg/file_util.h
new file mode 100644
index 0000000..bcfb3cb
--- /dev/null
+++ b/libopkg/file_util.h
@@ -0,0 +1,29 @@
+/* file_util.h - convenience routines for common file operations
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef FILE_UTIL_H
+#define FILE_UTIL_H
+
+int file_exists(const char *file_name);
+int file_is_dir(const char *file_name);
+char *file_read_line_alloc(FILE *file);
+int file_move(const char *src, const char *dest);
+int file_copy(const char *src, const char *dest);
+int file_mkdir_hier(const char *path, long mode);
+char *file_md5sum_alloc(const char *file_name);
+
+#endif
diff --git a/libopkg/hash_table.c b/libopkg/hash_table.c
new file mode 100644
index 0000000..41877c2
--- /dev/null
+++ b/libopkg/hash_table.c
@@ -0,0 +1,155 @@
+/* hash.c - hash tables for opkg
+
+   Steven M. Ayer, Jamey Hicks
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "hash_table.h"
+#include "opkg_message.h"
+
+
+static int hash_index(hash_table_t *hash, const char *pkg_name);
+static int rotating(const char *key, int len, int prime);
+
+static int hash_index(hash_table_t *hash, const char *pkg_name)
+{
+    return rotating(pkg_name, strlen(pkg_name), hash->n_entries);
+}
+  
+static int rotating(const char *key, int len, int prime)
+{
+    unsigned int hash, i;
+    for (hash=len, i=0; i<len; ++i)
+	hash = (hash<<4)^(hash>>28)^key[i];
+    return (hash % prime);
+}
+
+
+/*
+ * this is an open table keyed by strings
+ */
+int hash_table_init(const char *name, hash_table_t *hash, int len)
+{
+    static int primes_table[] = {
+	379, 761, 983, 1423, 2711, 3361, 3931, 4679, 5519, 6701, 9587,
+	19471, 23143, 33961, 46499, 49727, 99529, 0
+    };
+    int *picker;
+
+    if (hash->entries != NULL) {
+    	/* we have been here already */
+    	return 0;
+    }
+
+    hash->name = name;
+    hash->entries = NULL;
+    hash->n_entries = 0;
+    hash->hash_entry_key = NULL;
+
+    picker = primes_table;
+    while(*picker && (*picker++ < len));
+    if(!*picker)
+	fprintf(stderr, "%s: primes table might not be big enough (! << %d)\n", __FUNCTION__, len);
+    --picker;
+
+    hash->n_entries = *picker;
+    hash->entries = (hash_entry_t *)calloc(hash->n_entries, sizeof(hash_entry_t));
+    if (hash->entries == NULL) {
+	fprintf(stderr, "%s: Out of memory.\n", __FUNCTION__);
+	return ENOMEM;
+    }
+    return 0;
+}
+
+void hash_table_deinit(hash_table_t *hash)
+{
+    free(hash->entries);
+    hash->entries = NULL;
+    hash->n_entries = 0;
+}
+
+void *hash_table_get(hash_table_t *hash, const char *key)
+{
+  int ndx= hash_index(hash, key);
+  hash_entry_t *hash_entry = hash->entries + ndx;
+  while (hash_entry) 
+  {
+    if (hash_entry->key) 
+    {
+      if (strcmp(key, hash_entry->key) == 0) {
+         // opkg_message(NULL, OPKG_DEBUG, "Function: %s. Key found for '%s' \n", __FUNCTION__, key);
+	 return hash_entry->data;
+      }
+    }
+    hash_entry = hash_entry->next;
+  }
+  return NULL;
+}
+
+int hash_table_insert(hash_table_t *hash, const char *key, void *value)
+{
+     int ndx= hash_index(hash, key);
+     hash_entry_t *hash_entry = hash->entries + ndx;
+     if (0) opkg_message(NULL, OPKG_DEBUG2, "Function: %s. Inserting in hash for '%s' \n", __FUNCTION__, key);
+     if (hash_entry->key) {
+	  if (strcmp(hash_entry->key, key) == 0) {
+	       /* alread in table, update the value */
+               if (0) opkg_message(NULL, OPKG_DEBUG2, "Function: %s. Value already in hash for '%s' \n", __FUNCTION__, key);
+	       hash_entry->data = value;
+	       return 0;
+	  } else {
+	       /* 
+		* if this is a collision, we have to go to the end of the ll,
+		* then add a new entry
+		* before we can hook up the value
+		*/
+               if (0) opkg_message(NULL, OPKG_DEBUG2, "Function: %s. Value already in hash by collision for '%s' \n", __FUNCTION__, key);
+	       while (hash_entry->next)
+		    hash_entry = hash_entry->next;
+	       hash_entry->next = (hash_entry_t *)malloc(sizeof(hash_entry_t));
+	       if (!hash_entry->next) {
+		    return -ENOMEM;
+	       }
+	       hash_entry = hash_entry->next;
+	       hash_entry->next = NULL;
+	  }
+     }
+     hash->n_elements++;
+     hash_entry->key = strdup(key);
+     hash_entry->data = value;
+
+     return 0;
+}
+
+
+void hash_table_foreach(hash_table_t *hash, void (*f)(const char *key, void *entry, void *data), void *data)
+{ 
+    int i;
+    if (!hash || !f)
+	return;
+
+    for (i = 0; i < hash->n_entries; i++) {
+	hash_entry_t *hash_entry = (hash->entries + i);
+	do {
+	    if(hash_entry->key) {
+		f(hash_entry->key, hash_entry->data, data);
+	    }
+	} while((hash_entry = hash_entry->next));
+    }
+}
+
diff --git a/libopkg/hash_table.h b/libopkg/hash_table.h
new file mode 100644
index 0000000..388a966
--- /dev/null
+++ b/libopkg/hash_table.h
@@ -0,0 +1,44 @@
+/* hash.h - hash tables for opkg
+
+   Steven M. Ayer, Jamey Hicks
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef _HASH_TABLE_H_
+#define _HASH_TABLE_H_
+
+typedef struct hash_entry hash_entry_t;
+typedef struct hash_table hash_table_t;
+
+struct hash_entry {
+  const char * key;
+  void * data;
+  struct hash_entry * next;
+};
+
+struct hash_table {
+  const char *name; 
+  hash_entry_t * entries;  
+  int n_entries; /* number of buckets */
+  int n_elements;
+  const char * (*hash_entry_key)(void * data);
+};
+
+int hash_table_init(const char *name, hash_table_t *hash, int len);
+void hash_table_deinit(hash_table_t *hash);
+void *hash_table_get(hash_table_t *hash, const char *key);
+int hash_table_insert(hash_table_t *hash, const char *key, void *value);
+void hash_table_foreach(hash_table_t *hash, void (*f)(const char *key, void *entry, void *data), void *data);
+
+#endif /* _HASH_TABLE_H_ */
diff --git a/libopkg/includes.h b/libopkg/includes.h
new file mode 100644
index 0000000..5a67001
--- /dev/null
+++ b/libopkg/includes.h
@@ -0,0 +1,53 @@
+#ifndef INCLUDES_H
+#define INCLUDES_H
+
+#include <stdio.h>
+
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stdarg.h>
+# include <stddef.h>
+# include <ctype.h>
+# include <errno.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+
+#if HAVE_REGEX_H
+# include <regex.h>
+#endif
+
+#if HAVE_STRING_H
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+/* XXX: What's the right way to pick up GNU's strndup declaration? */
+# if __GNUC__
+#   define __USE_GNU 1
+# endif
+# include <string.h>
+# undef __USE_GNU
+#endif
+
+#if HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+
+#if HAVE_SYS_WAIT_H
+# include <sys/wait.h>
+#endif
+
+#if HAVE_UNISTD_H
+# include <sys/types.h>
+# include <unistd.h>
+#endif
+
+// #include "replace/replace.h"
+
+#endif
diff --git a/libopkg/libopkg.c b/libopkg/libopkg.c
new file mode 100644
index 0000000..c57ad0a
--- /dev/null
+++ b/libopkg/libopkg.c
@@ -0,0 +1,527 @@
+/* opkglib.c - the itsy package management system
+
+   Florina Boor
+
+   Copyright (C) 2003 kernel concepts
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifdef OPKG_LIB
+
+#include "opkg.h"
+#include "includes.h"
+#include "libopkg.h"
+
+#include "args.h"
+#include "opkg_conf.h"
+#include "opkg_cmd.h"
+#include "file_util.h"
+
+
+
+opkg_message_callback opkg_cb_message = NULL;
+opkg_response_callback opkg_cb_response = NULL;
+opkg_status_callback opkg_cb_status = NULL;
+opkg_list_callback opkg_cb_list = NULL;
+
+
+int
+opkg_init (opkg_message_callback mcall, 
+           opkg_response_callback rcall,
+           args_t * args)
+{
+	opkg_cb_message = mcall;
+	opkg_cb_response = rcall;
+
+	args_init (args);
+
+	return 0;
+}
+
+
+int
+opkg_deinit (args_t * args)
+{
+	args_deinit (args);
+	opkg_cb_message = NULL;
+	opkg_cb_response = NULL;
+
+	/* place other cleanup stuff here */
+
+	return 0;
+}
+
+
+int
+opkg_packages_list(args_t *args, 
+                   const char *packages, 
+                   opkg_list_callback cblist,
+                   void *userdata)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	opkg_cb_list = cblist;
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("list");
+	if (packages)
+		err = opkg_cmd_exec (cmd, &opkg_conf, 1, &packages, userdata);
+	else
+		err = opkg_cmd_exec (cmd, &opkg_conf, 0, NULL, userdata);
+	opkg_cb_list = NULL;
+	opkg_conf_deinit (&opkg_conf);
+	return (err);
+}
+
+
+int
+opkg_packages_status(args_t *args,
+                     const char *packages,
+                     opkg_status_callback cbstatus,
+                     void *userdata)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	opkg_cb_status = cbstatus;
+
+	/* we need to do this because of static declarations,
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("status");
+	if (packages)
+		err = opkg_cmd_exec (cmd, &opkg_conf, 1, &packages, userdata);
+	else
+		err = opkg_cmd_exec (cmd, &opkg_conf, 0, NULL, userdata);
+
+	opkg_cb_status = NULL;
+	opkg_conf_deinit (&opkg_conf);
+	return (err);
+}
+
+
+int
+opkg_packages_info(args_t *args,
+                   const char *packages,
+                   opkg_status_callback cbstatus,
+                   void *userdata)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	opkg_cb_status = cbstatus;
+
+	/* we need to do this because of static declarations,
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("info");
+	if (packages)
+		err = opkg_cmd_exec (cmd, &opkg_conf, 1, &packages, userdata);
+	else
+		err = opkg_cmd_exec (cmd, &opkg_conf, 0, NULL, userdata);
+
+	opkg_cb_status = NULL;
+	opkg_conf_deinit (&opkg_conf);
+	return (err);
+}
+
+
+int
+opkg_packages_install (args_t * args, const char *name)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	/* this error should be handled in application */
+	if (!name || !strlen (name))
+		return (-1);
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	/* we need to do this because of static declarations,
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("install");
+	err = opkg_cmd_exec (cmd, &opkg_conf, 1, &name, NULL);
+
+	opkg_conf_deinit(&opkg_conf);
+	return (err);
+}
+
+
+int
+opkg_packages_remove(args_t *args, const char *name, int purge)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	/* this error should be handled in application */
+	if (!name || !strlen (name))
+		return (-1);
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	if (purge)
+		cmd = opkg_cmd_find ("purge");
+	else
+		cmd = opkg_cmd_find ("remove");
+
+	err = opkg_cmd_exec (cmd, &opkg_conf, 1, &name, NULL);
+	
+	opkg_conf_deinit(&opkg_conf);
+	return (err);
+}
+
+
+int 
+opkg_lists_update(args_t *args)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("update");
+
+	err = opkg_cmd_exec (cmd, &opkg_conf, 0, NULL, NULL);
+	
+	opkg_conf_deinit(&opkg_conf);
+	return (err);
+}
+
+
+int 
+opkg_packages_upgrade(args_t *args)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("upgrade");
+
+	err = opkg_cmd_exec (cmd, &opkg_conf, 0, NULL, NULL);
+	
+	opkg_conf_deinit(&opkg_conf);
+	return (err);
+}
+
+
+int
+opkg_packages_download (args_t * args, const char *name)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	/* this error should be handled in application */
+	if (!name || !strlen (name))
+		return (-1);
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	/* we need to do this because of static declarations,
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("download");
+	err = opkg_cmd_exec (cmd, &opkg_conf, 1, &name, NULL);
+
+	opkg_conf_deinit(&opkg_conf);
+	return (err);
+}
+
+
+int
+opkg_package_files(args_t *args, 
+                   const char *name, 
+                   opkg_list_callback cblist,
+                   void *userdata)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+
+	/* this error should be handled in application */
+	if (!name || !strlen (name))
+		return (-1);
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	opkg_cb_list = cblist;
+	
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("files");
+
+	err = opkg_cmd_exec (cmd, &opkg_conf, 1, &name, userdata);
+	
+	opkg_cb_list = NULL;
+	opkg_conf_deinit(&opkg_conf);
+	return (err);
+}
+
+
+int 
+opkg_file_search(args_t *args, 
+                const char *file,
+				opkg_list_callback cblist,
+                void *userdata)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+	
+	/* this error should be handled in application */
+	if (!file || !strlen (file))
+		return (-1);
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	opkg_cb_list = cblist;
+
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find ("search");
+	err = opkg_cmd_exec (cmd, &opkg_conf, 1, &file, userdata);
+	
+	opkg_cb_list = NULL;
+	opkg_conf_deinit(&opkg_conf);
+	return(err);
+}
+
+
+int 
+opkg_file_what(args_t *args, const char *file, const char* command)
+{
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+	int err;
+	
+	/* this error should be handled in application */
+	if (!file || !strlen (file))
+		return (-1);
+
+	err = opkg_conf_init (&opkg_conf, args);
+	if (err)
+	{
+		return err;
+	}
+
+	/* we need to do this because of static declarations, 
+	 * maybe a good idea to change */
+	cmd = opkg_cmd_find (command);
+	err = opkg_cmd_exec (cmd, &opkg_conf, 1, &file, NULL);
+	
+	opkg_conf_deinit(&opkg_conf);
+	return(err);
+}
+
+#define opkg_package_whatdepends(args,file) opkg_file_what(args,file,"whatdepends")
+#define opkg_package_whatrecommends(args, file) opkg_file_what(args,file,"whatrecommends")
+#define opkg_package_whatprovides(args, file) opkg_file_what(args,file,"whatprovides")
+#define opkg_package_whatconflicts(args, file) opkg_file_what(args,file,"whatconflicts")
+#define opkg_package_whatreplaces(args, file) opkg_file_what(args,file,"whatreplaces")
+
+
+int default_opkg_message_callback(opkg_conf_t *conf, message_level_t level, 
+				  char *msg)
+{
+     if (conf && (conf->verbosity < level)) {
+	  return 0;
+     } else {
+#ifdef OPKG_LIB
+          if ( level == OPKG_ERROR ){
+             push_error_list(&error_list, msg); 
+//	     printf(msg);
+          } else
+#endif
+	     printf(msg);
+     }
+     return 0;
+}
+
+int default_opkg_list_callback(char *name, char *desc, char *version, 
+			       pkg_state_status_t status, void *userdata)
+{
+     if (desc)
+	  printf("%s - %s - %s\n", name, version, desc);
+     else
+	  printf("%s - %s\n", name, version);
+     return 0;
+}
+
+int default_opkg_files_callback(char *name, char *desc, char *version,
+                   pkg_state_status_t status, void *userdata)
+{
+     if (desc)
+	  printf("%s\n", desc);
+     return 0;
+}
+
+int default_opkg_status_callback(char *name, int istatus, char *desc,
+				 void *userdata)
+{
+     printf("%s\n", desc);
+     return 0;
+}
+
+char* default_opkg_response_callback(char *question)
+{
+     char *response = NULL;
+     printf(question);
+     fflush(stdout);
+     do {
+	  response = (char *)file_read_line_alloc(stdin);
+     } while (response == NULL);
+     return response;
+}
+
+/* This is used for backward compatibility */
+int
+opkg_op (int argc, char *argv[])
+{
+	int err, optind;
+	args_t args;
+	char *cmd_name;
+	opkg_cmd_t *cmd;
+	opkg_conf_t opkg_conf;
+
+	args_init (&args);
+
+	optind = args_parse (&args, argc, argv);
+	if (optind == argc || optind < 0)
+	{
+		args_usage ("opkg must have one sub-command argument");
+	}
+
+	cmd_name = argv[optind++];
+/* Pigi: added a flag to disable the checking of structures if the command does not need to 
+         read anything from there.
+*/
+        if ( !strcmp(cmd_name,"print-architecture") ||
+             !strcmp(cmd_name,"print_architecture") ||
+             !strcmp(cmd_name,"print-installation-architecture") ||
+             !strcmp(cmd_name,"print_installation_architecture") )
+           args.nocheckfordirorfile = 1;
+
+/* Pigi: added a flag to disable the reading of feed files  if the command does not need to 
+         read anything from there.
+*/
+        if ( !strcmp(cmd_name,"flag") ||
+             !strcmp(cmd_name,"configure") ||
+             !strcmp(cmd_name,"remove") ||
+             !strcmp(cmd_name,"files") ||
+             !strcmp(cmd_name,"search") ||
+             !strcmp(cmd_name,"compare_versions") ||
+             !strcmp(cmd_name,"compare-versions") ||
+             !strcmp(cmd_name,"list_installed") ||
+             !strcmp(cmd_name,"list-installed") ||
+             !strcmp(cmd_name,"status") )
+           args.noreadfeedsfile = 1;
+
+
+	err = opkg_conf_init (&opkg_conf, &args);
+	if (err)
+	{
+		return err;
+	}
+
+	args_deinit (&args);
+
+	opkg_cb_message = default_opkg_message_callback;
+	opkg_cb_response = default_opkg_response_callback;
+	opkg_cb_status = default_opkg_status_callback;
+ 	if ( strcmp(cmd_name, "files")==0)
+	     opkg_cb_list = default_opkg_files_callback;
+ 	else
+	     opkg_cb_list = default_opkg_list_callback;
+
+	cmd = opkg_cmd_find (cmd_name);
+	if (cmd == NULL)
+	{
+		fprintf (stderr, "%s: unknown sub-command %s\n", argv[0],
+			 cmd_name);
+		args_usage (NULL);
+	}
+
+	if (cmd->requires_args && optind == argc)
+	{
+		fprintf (stderr,
+			 "%s: the ``%s'' command requires at least one argument\n",
+			 __FUNCTION__, cmd_name);
+		args_usage (NULL);
+	}
+
+	err = opkg_cmd_exec (cmd, &opkg_conf, argc - optind, (const char **) (argv + optind), NULL);
+
+	opkg_conf_deinit (&opkg_conf);
+
+	return err;
+}
+
+#endif /* OPKG_LIB */
diff --git a/libopkg/libopkg.h b/libopkg/libopkg.h
new file mode 100644
index 0000000..3430e1c
--- /dev/null
+++ b/libopkg/libopkg.h
@@ -0,0 +1,94 @@
+/* opkglib.h - the itsy package management system
+
+   Florian Boor <florian.boor@kernelconcepts.de>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKGLIB_H
+#define OPKGLIB_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+
+#ifdef OPKG_LIB
+
+#include "opkg_conf.h"
+#include "opkg_message.h"
+#include "opkg_state.h"
+
+#include "args.h"
+#include "pkg.h"
+
+typedef int (*opkg_message_callback)(opkg_conf_t *conf, message_level_t level, 
+	char *msg);
+typedef int (*opkg_list_callback)(char *name, char *desc, char *version, 
+	pkg_state_status_t status, void *userdata);
+typedef int (*opkg_status_callback)(char *name, int istatus, char *desc,
+	void *userdata);
+typedef char* (*opkg_response_callback)(char *question);
+typedef void (*opkg_download_progress_callback)(int percent, char *url);
+typedef void (*opkg_state_changed_callback)(opkg_state_t state, const char *data);
+
+extern int opkg_op(int argc, char *argv[]); /* opkglib.c */
+extern int opkg_init (opkg_message_callback mcall, 
+                      opkg_response_callback rcall,
+					  args_t * args);
+
+extern int opkg_deinit (args_t *args);
+extern int opkg_packages_list(args_t *args, 
+                              const char *packages, 
+                              opkg_list_callback cblist,
+                              void *userdata);
+extern int opkg_packages_status(args_t *args, 
+                                const char *packages, 
+                                opkg_status_callback cbstatus,
+								void *userdata);
+extern int opkg_packages_info(args_t *args,
+                              const char *packages,
+                              opkg_status_callback cbstatus,
+                              void *userdata);
+extern int opkg_packages_install(args_t *args, const char *name);
+extern int opkg_packages_remove(args_t *args, const char *name, int purge);
+extern int opkg_lists_update(args_t *args);
+extern int opkg_packages_upgrade(args_t *args);
+extern int opkg_packages_download(args_t *args, const char *name);
+extern int opkg_package_files(args_t *args,
+                              const char *name,
+							  opkg_list_callback cblist,
+							  void *userdata);
+extern int opkg_file_search(args_t *args,
+                            const char *file,
+							opkg_list_callback cblist,
+							void *userdata);
+extern int opkg_package_whatdepends(args_t *args, const char *file);
+extern int opkg_package_whatrecommends(args_t *args, const char *file);
+extern int opkg_package_whatprovides(args_t *args, const char *file);
+extern int opkg_package_whatconflicts(args_t *args, const char *file);
+extern int opkg_package_whatreplaces(args_t *args, const char *file);
+
+extern opkg_message_callback opkg_cb_message; /* opkglib.c */
+extern opkg_response_callback opkg_cb_response;
+extern opkg_status_callback opkg_cb_status;
+extern opkg_list_callback opkg_cb_list;
+extern opkg_download_progress_callback opkg_cb_download_progress; /* opkg_download.c */
+extern opkg_state_changed_callback opkg_cb_state_changed; /* opkg_state.c */
+
+extern void push_error_list(struct errlist **errors,char * msg);
+extern void reverse_error_list(struct errlist **errors);
+extern void free_error_list();
+
+#endif
+
+
+#endif
diff --git a/libopkg/md5.c b/libopkg/md5.c
new file mode 100644
index 0000000..9cbc228
--- /dev/null
+++ b/libopkg/md5.c
@@ -0,0 +1,658 @@
+/* md5.c - Compute MD5 checksum of files or strings according to the
+ *         definition of MD5 in RFC 1321 from April 1992.
+ * Copyright (C) 1995-1999 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu> */
+/* Hacked to work with BusyBox by Alfred M. Szmidt <ams@trillian.itslinux.org> */
+
+/* Sucked directly into opkg since the md5sum functions aren't in libbb
+   Dropped a few functions since opkg only needs md5_stream.
+   Got rid of evil, twisted defines of FALSE=1 and TRUE=0
+   6 March 2002 Carl Worth <cworth@east.isi.edu>
+*/
+
+/*
+ * June 29, 2001        Manuel Novoa III
+ *
+ * Added MD5SUM_SIZE_VS_SPEED configuration option.
+ *
+ * Current valid values, with data from my system for comparison, are:
+ *   (using uClibc and running on linux-2.4.4.tar.bz2)
+ *                     user times (sec)  text size (386)
+ *     0 (fastest)         1.1                6144
+ *     1                   1.4                5392
+ *     2                   3.0                5088
+ *     3 (smallest)        5.1                4912
+ */
+
+#define MD5SUM_SIZE_VS_SPEED 3
+
+/**********************************************************************/
+
+#include <stdio.h>
+#include <errno.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+#include <endian.h>
+#include <sys/types.h>
+#if defined HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#include "md5.h"
+
+//----------------------------------------------------------------------------
+//--------md5.c
+//----------------------------------------------------------------------------
+
+/* md5.c - Functions to compute MD5 message digest of files or memory blocks
+ *         according to the definition of MD5 in RFC 1321 from April 1992.
+ */
+
+/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.  */
+
+//----------------------------------------------------------------------------
+//--------md5.h
+//----------------------------------------------------------------------------
+
+/* md5.h - Declaration of functions and data types used for MD5 sum
+   computing library functions. */
+
+typedef u_int32_t md5_uint32;
+
+/* Structure to save state of computation between the single steps.  */
+struct md5_ctx
+{
+  md5_uint32 A;
+  md5_uint32 B;
+  md5_uint32 C;
+  md5_uint32 D;
+
+  md5_uint32 total[2];
+  md5_uint32 buflen;
+  char buffer[128];
+};
+
+/*
+ * The following three functions are build up the low level used in
+ * the functions `md5_stream' and `md5_buffer'.
+ */
+
+/* Initialize structure containing state of computation.
+   (RFC 1321, 3.3: Step 3)  */
+static void md5_init_ctx __P ((struct md5_ctx *ctx));
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is necessary that LEN is a multiple of 64!!! */
+static void md5_process_block __P ((const void *buffer, size_t len,
+				    struct md5_ctx *ctx));
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is NOT required that LEN is a multiple of 64.  */
+static void md5_process_bytes __P ((const void *buffer, size_t len,
+				    struct md5_ctx *ctx));
+
+/* Process the remaining bytes in the buffer and put result from CTX
+   in first 16 bytes following RESBUF.  The result is always in little
+   endian byte order, so that a byte-wise output yields to the wanted
+   ASCII representation of the message digest.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+static void *md5_finish_ctx __P ((struct md5_ctx *ctx, void *resbuf));
+
+//----------------------------------------------------------------------------
+//--------end of md5.h
+//----------------------------------------------------------------------------
+
+/* Handle endian-ness */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	#define SWAP(n) (n)
+#else
+	#define SWAP(n) ((n << 24) | ((n&65280)<<8) | ((n&16711680)>>8) | (n>>24))
+#endif
+
+
+
+#if MD5SUM_SIZE_VS_SPEED == 0
+/* This array contains the bytes used to pad the buffer to the next
+   64-byte boundary.  (RFC 1321, 3.1: Step 1)  */
+static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ...  */  };
+#endif
+
+/* Initialize structure containing state of computation.
+   (RFC 1321, 3.3: Step 3)  */
+void md5_init_ctx(struct md5_ctx *ctx)
+{
+  ctx->A = 0x67452301;
+  ctx->B = 0xefcdab89;
+  ctx->C = 0x98badcfe;
+  ctx->D = 0x10325476;
+
+  ctx->total[0] = ctx->total[1] = 0;
+  ctx->buflen = 0;
+}
+
+/* Process the remaining bytes in the internal buffer and the usual
+   prolog according to the standard and write the result to RESBUF.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+static void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
+{
+  /* Take yet unprocessed bytes into account.  */
+  md5_uint32 bytes = ctx->buflen;
+  size_t pad;
+
+  /* Now count remaining bytes.  */
+  ctx->total[0] += bytes;
+  if (ctx->total[0] < bytes)
+    ++ctx->total[1];
+
+  pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
+#if MD5SUM_SIZE_VS_SPEED > 0
+  memset(&ctx->buffer[bytes], 0, pad);
+  ctx->buffer[bytes] = 0x80;
+#else
+  memcpy(&ctx->buffer[bytes], fillbuf, pad);
+#endif
+
+  /* Put the 64-bit file length in *bits* at the end of the buffer.  */
+  *(md5_uint32 *) & ctx->buffer[bytes + pad] = SWAP(ctx->total[0] << 3);
+  *(md5_uint32 *) & ctx->buffer[bytes + pad + 4] =
+    SWAP( ((ctx->total[1] << 3) | (ctx->total[0] >> 29)) );
+
+  /* Process last bytes.  */
+  md5_process_block(ctx->buffer, bytes + pad + 8, ctx);
+
+/* Put result from CTX in first 16 bytes following RESBUF.  The result is
+   always in little endian byte order, so that a byte-wise output yields
+   to the wanted ASCII representation of the message digest.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+  ((md5_uint32 *) resbuf)[0] = SWAP(ctx->A);
+  ((md5_uint32 *) resbuf)[1] = SWAP(ctx->B);
+  ((md5_uint32 *) resbuf)[2] = SWAP(ctx->C);
+  ((md5_uint32 *) resbuf)[3] = SWAP(ctx->D);
+
+  return resbuf;
+}
+
+/* Compute MD5 message digest for bytes read from STREAM.  The
+   resulting message digest number will be written into the 16 bytes
+   beginning at RESBLOCK.  */
+int md5_stream(FILE *stream, void *resblock)
+{
+  /* Important: BLOCKSIZE must be a multiple of 64.  */
+static const int BLOCKSIZE = 4096;
+  struct md5_ctx ctx;
+  char buffer[BLOCKSIZE + 72];
+  size_t sum;
+
+  /* Initialize the computation context.  */
+  md5_init_ctx(&ctx);
+
+  /* Iterate over full file contents.  */
+  while (1) {
+    /* We read the file in blocks of BLOCKSIZE bytes.  One call of the
+       computation function processes the whole buffer so that with the
+       next round of the loop another block can be read.  */
+    size_t n;
+    sum = 0;
+
+    /* Read block.  Take care for partial reads.  */
+    do {
+      n = fread(buffer + sum, 1, BLOCKSIZE - sum, stream);
+
+      sum += n;
+    }
+    while (sum < BLOCKSIZE && n != 0);
+    if (n == 0 && ferror(stream))
+      return 1;
+
+    /* If end of file is reached, end the loop.  */
+    if (n == 0)
+      break;
+
+    /* Process buffer with BLOCKSIZE bytes.  Note that
+       BLOCKSIZE % 64 == 0
+    */
+    md5_process_block(buffer, BLOCKSIZE, &ctx);
+  }
+
+  /* Add the last bytes if necessary.  */
+  if (sum > 0)
+    md5_process_bytes(buffer, sum, &ctx);
+
+  /* Construct result in desired memory.  */
+  md5_finish_ctx(&ctx, resblock);
+  return 0;
+}
+
+/* Compute MD5 message digest for LEN bytes beginning at BUFFER.  The
+   result is always in little endian byte order, so that a byte-wise
+   output yields to the wanted ASCII representation of the message
+   digest.  */
+void *md5_buffer(const char *buffer, size_t len, void *resblock)
+{
+  struct md5_ctx ctx;
+
+  /* Initialize the computation context.  */
+  md5_init_ctx(&ctx);
+
+  /* Process whole buffer but last len % 64 bytes.  */
+  md5_process_bytes(buffer, len, &ctx);
+
+  /* Put result in desired memory area.  */
+  return md5_finish_ctx(&ctx, resblock);
+}
+
+static void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx)
+{
+  /* When we already have some bits in our internal buffer concatenate
+     both inputs first.  */
+  if (ctx->buflen != 0) {
+    size_t left_over = ctx->buflen;
+    size_t add = 128 - left_over > len ? len : 128 - left_over;
+
+    memcpy(&ctx->buffer[left_over], buffer, add);
+    ctx->buflen += add;
+
+    if (left_over + add > 64) {
+      md5_process_block(ctx->buffer, (left_over + add) & ~63, ctx);
+      /* The regions in the following copy operation cannot overlap.  */
+      memcpy(ctx->buffer, &ctx->buffer[(left_over + add) & ~63],
+	     (left_over + add) & 63);
+      ctx->buflen = (left_over + add) & 63;
+    }
+
+    buffer = (const char *) buffer + add;
+    len -= add;
+  }
+
+  /* Process available complete blocks.  */
+  if (len > 64) {
+    md5_process_block(buffer, len & ~63, ctx);
+    buffer = (const char *) buffer + (len & ~63);
+    len &= 63;
+  }
+
+  /* Move remaining bytes in internal buffer.  */
+  if (len > 0) {
+    memcpy(ctx->buffer, buffer, len);
+    ctx->buflen = len;
+  }
+}
+
+/* These are the four functions used in the four steps of the MD5 algorithm
+   and defined in the RFC 1321.  The first function is a little bit optimized
+   (as found in Colin Plumbs public domain implementation).  */
+/* #define FF(b, c, d) ((b & c) | (~b & d)) */
+#define FF(b, c, d) (d ^ (b & (c ^ d)))
+#define FG(b, c, d) FF (d, b, c)
+#define FH(b, c, d) (b ^ c ^ d)
+#define FI(b, c, d) (c ^ (b | ~d))
+
+/* Process LEN bytes of BUFFER, accumulating context into CTX.
+   It is assumed that LEN % 64 == 0.  */
+static void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
+{
+  md5_uint32 correct_words[16];
+  const md5_uint32 *words = buffer;
+  size_t nwords = len / sizeof(md5_uint32);
+  const md5_uint32 *endp = words + nwords;
+#if MD5SUM_SIZE_VS_SPEED > 0
+  static const md5_uint32 C_array[] = {
+      /* round 1 */
+      0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+      0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+      0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+      0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+      /* round 2 */
+      0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+      0xd62f105d, 0x2441453,  0xd8a1e681, 0xe7d3fbc8,
+      0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+      0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+      /* round 3 */
+      0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+      0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+      0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
+      0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+      /* round 4 */
+      0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+      0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+      0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+      0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
+  };
+
+  static const char P_array[] = {
+#if MD5SUM_SIZE_VS_SPEED > 1
+      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
+#endif
+      1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
+      5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
+      0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9  /* 4 */
+  };
+
+#if MD5SUM_SIZE_VS_SPEED > 1
+  static const char S_array[] = {
+      7, 12, 17, 22,
+      5, 9, 14, 20,
+      4, 11, 16, 23,
+      6, 10, 15, 21
+  };
+#endif
+#endif
+
+  md5_uint32 A = ctx->A;
+  md5_uint32 B = ctx->B;
+  md5_uint32 C = ctx->C;
+  md5_uint32 D = ctx->D;
+
+  /* First increment the byte count.  RFC 1321 specifies the possible
+     length of the file up to 2^64 bits.  Here we only compute the
+     number of bytes.  Do a double word increment.  */
+  ctx->total[0] += len;
+  if (ctx->total[0] < len)
+    ++ctx->total[1];
+
+  /* Process all bytes in the buffer with 64 bytes in each round of
+     the loop.  */
+  while (words < endp) {
+    md5_uint32 *cwp = correct_words;
+    md5_uint32 A_save = A;
+    md5_uint32 B_save = B;
+    md5_uint32 C_save = C;
+    md5_uint32 D_save = D;
+
+#if MD5SUM_SIZE_VS_SPEED > 1
+#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
+
+    const md5_uint32 *pc;
+    const char *pp;
+    const char *ps;
+    int i;
+    md5_uint32 temp;
+
+    for ( i=0 ; i < 16 ; i++ ) {
+	cwp[i] = SWAP(words[i]);
+    }
+    words += 16;
+
+#if MD5SUM_SIZE_VS_SPEED > 2
+    pc = C_array; pp = P_array; ps = S_array - 4;
+
+    for ( i = 0 ; i < 64 ; i++ ) {
+	if ((i&0x0f) == 0) ps += 4;
+	temp = A;
+	switch (i>>4) {
+	    case 0:
+		temp += FF(B,C,D);
+		break;
+	    case 1:
+		temp += FG(B,C,D);
+		break;
+	    case 2:
+		temp += FH(B,C,D);
+		break;
+	    case 3:
+		temp += FI(B,C,D);
+	}
+	temp += cwp[(int)(*pp++)] + *pc++;
+	temp = CYCLIC (temp, ps[i&3]);
+	temp += B;
+	A = D; D = C; C = B; B = temp;
+    }
+#else
+    pc = C_array; pp = P_array; ps = S_array;
+
+    for ( i = 0 ; i < 16 ; i++ ) {
+	temp = A + FF(B,C,D) + cwp[(int)(*pp++)] + *pc++;
+	temp = CYCLIC (temp, ps[i&3]);
+	temp += B;
+	A = D; D = C; C = B; B = temp;
+    }
+
+    ps += 4;
+    for ( i = 0 ; i < 16 ; i++ ) {
+	temp = A + FG(B,C,D) + cwp[(int)(*pp++)] + *pc++;
+	temp = CYCLIC (temp, ps[i&3]);
+	temp += B;
+	A = D; D = C; C = B; B = temp;
+    }
+    ps += 4;
+    for ( i = 0 ; i < 16 ; i++ ) {
+	temp = A + FH(B,C,D) + cwp[(int)(*pp++)] + *pc++;
+	temp = CYCLIC (temp, ps[i&3]);
+	temp += B;
+	A = D; D = C; C = B; B = temp;
+    }
+    ps += 4;
+    for ( i = 0 ; i < 16 ; i++ ) {
+	temp = A + FI(B,C,D) + cwp[(int)(*pp++)] + *pc++;
+	temp = CYCLIC (temp, ps[i&3]);
+	temp += B;
+	A = D; D = C; C = B; B = temp;
+    }
+
+#endif
+#else
+    /* First round: using the given function, the context and a constant
+       the next context is computed.  Because the algorithms processing
+       unit is a 32-bit word and it is determined to work on words in
+       little endian byte order we perhaps have to change the byte order
+       before the computation.  To reduce the work for the next steps
+       we store the swapped words in the array CORRECT_WORDS.  */
+
+#define OP(a, b, c, d, s, T)						\
+      do								\
+        {								\
+	  a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T;		\
+	  ++words;							\
+	  CYCLIC (a, s);						\
+	  a += b;							\
+        }								\
+      while (0)
+
+    /* It is unfortunate that C does not provide an operator for
+       cyclic rotation.  Hope the C compiler is smart enough.  */
+    /* gcc 2.95.4 seems to be --aaronl */
+#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
+
+    /* Before we start, one word to the strange constants.
+       They are defined in RFC 1321 as
+
+       T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
+    */
+
+#if MD5SUM_SIZE_VS_SPEED == 1
+    const md5_uint32 *pc;
+    const char *pp;
+    int i;
+#endif
+
+    /* Round 1.  */
+#if MD5SUM_SIZE_VS_SPEED == 1
+    pc = C_array;
+    for ( i=0 ; i < 4 ; i++ ) {
+	OP(A, B, C, D, 7, *pc++);
+	OP(D, A, B, C, 12, *pc++);
+	OP(C, D, A, B, 17, *pc++);
+	OP(B, C, D, A, 22, *pc++);
+    }
+#else
+    OP(A, B, C, D, 7, 0xd76aa478);
+    OP(D, A, B, C, 12, 0xe8c7b756);
+    OP(C, D, A, B, 17, 0x242070db);
+    OP(B, C, D, A, 22, 0xc1bdceee);
+    OP(A, B, C, D, 7, 0xf57c0faf);
+    OP(D, A, B, C, 12, 0x4787c62a);
+    OP(C, D, A, B, 17, 0xa8304613);
+    OP(B, C, D, A, 22, 0xfd469501);
+    OP(A, B, C, D, 7, 0x698098d8);
+    OP(D, A, B, C, 12, 0x8b44f7af);
+    OP(C, D, A, B, 17, 0xffff5bb1);
+    OP(B, C, D, A, 22, 0x895cd7be);
+    OP(A, B, C, D, 7, 0x6b901122);
+    OP(D, A, B, C, 12, 0xfd987193);
+    OP(C, D, A, B, 17, 0xa679438e);
+    OP(B, C, D, A, 22, 0x49b40821);
+#endif
+
+    /* For the second to fourth round we have the possibly swapped words
+       in CORRECT_WORDS.  Redefine the macro to take an additional first
+       argument specifying the function to use.  */
+#undef OP
+#define OP(f, a, b, c, d, k, s, T)					\
+      do 								\
+	{								\
+	  a += f (b, c, d) + correct_words[k] + T;			\
+	  CYCLIC (a, s);						\
+	  a += b;							\
+	}								\
+      while (0)
+
+    /* Round 2.  */
+#if MD5SUM_SIZE_VS_SPEED == 1
+    pp = P_array;
+    for ( i=0 ; i < 4 ; i++ ) {
+	OP(FG, A, B, C, D, (int)(*pp++), 5, *pc++);
+	OP(FG, D, A, B, C, (int)(*pp++), 9, *pc++);
+	OP(FG, C, D, A, B, (int)(*pp++), 14, *pc++);
+	OP(FG, B, C, D, A, (int)(*pp++), 20, *pc++);
+    }
+#else
+    OP(FG, A, B, C, D, 1, 5, 0xf61e2562);
+    OP(FG, D, A, B, C, 6, 9, 0xc040b340);
+    OP(FG, C, D, A, B, 11, 14, 0x265e5a51);
+    OP(FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
+    OP(FG, A, B, C, D, 5, 5, 0xd62f105d);
+    OP(FG, D, A, B, C, 10, 9, 0x02441453);
+    OP(FG, C, D, A, B, 15, 14, 0xd8a1e681);
+    OP(FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
+    OP(FG, A, B, C, D, 9, 5, 0x21e1cde6);
+    OP(FG, D, A, B, C, 14, 9, 0xc33707d6);
+    OP(FG, C, D, A, B, 3, 14, 0xf4d50d87);
+    OP(FG, B, C, D, A, 8, 20, 0x455a14ed);
+    OP(FG, A, B, C, D, 13, 5, 0xa9e3e905);
+    OP(FG, D, A, B, C, 2, 9, 0xfcefa3f8);
+    OP(FG, C, D, A, B, 7, 14, 0x676f02d9);
+    OP(FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
+#endif
+
+    /* Round 3.  */
+#if MD5SUM_SIZE_VS_SPEED == 1
+    for ( i=0 ; i < 4 ; i++ ) {
+	OP(FH, A, B, C, D, (int)(*pp++), 4, *pc++);
+	OP(FH, D, A, B, C, (int)(*pp++), 11, *pc++);
+	OP(FH, C, D, A, B, (int)(*pp++), 16, *pc++);
+	OP(FH, B, C, D, A, (int)(*pp++), 23, *pc++);
+    }
+#else
+    OP(FH, A, B, C, D, 5, 4, 0xfffa3942);
+    OP(FH, D, A, B, C, 8, 11, 0x8771f681);
+    OP(FH, C, D, A, B, 11, 16, 0x6d9d6122);
+    OP(FH, B, C, D, A, 14, 23, 0xfde5380c);
+    OP(FH, A, B, C, D, 1, 4, 0xa4beea44);
+    OP(FH, D, A, B, C, 4, 11, 0x4bdecfa9);
+    OP(FH, C, D, A, B, 7, 16, 0xf6bb4b60);
+    OP(FH, B, C, D, A, 10, 23, 0xbebfbc70);
+    OP(FH, A, B, C, D, 13, 4, 0x289b7ec6);
+    OP(FH, D, A, B, C, 0, 11, 0xeaa127fa);
+    OP(FH, C, D, A, B, 3, 16, 0xd4ef3085);
+    OP(FH, B, C, D, A, 6, 23, 0x04881d05);
+    OP(FH, A, B, C, D, 9, 4, 0xd9d4d039);
+    OP(FH, D, A, B, C, 12, 11, 0xe6db99e5);
+    OP(FH, C, D, A, B, 15, 16, 0x1fa27cf8);
+    OP(FH, B, C, D, A, 2, 23, 0xc4ac5665);
+#endif
+
+    /* Round 4.  */
+#if MD5SUM_SIZE_VS_SPEED == 1
+    for ( i=0 ; i < 4 ; i++ ) {
+	OP(FI, A, B, C, D, (int)(*pp++), 6, *pc++);
+	OP(FI, D, A, B, C, (int)(*pp++), 10, *pc++);
+	OP(FI, C, D, A, B, (int)(*pp++), 15, *pc++);
+	OP(FI, B, C, D, A, (int)(*pp++), 21, *pc++);
+    }
+#else
+    OP(FI, A, B, C, D, 0, 6, 0xf4292244);
+    OP(FI, D, A, B, C, 7, 10, 0x432aff97);
+    OP(FI, C, D, A, B, 14, 15, 0xab9423a7);
+    OP(FI, B, C, D, A, 5, 21, 0xfc93a039);
+    OP(FI, A, B, C, D, 12, 6, 0x655b59c3);
+    OP(FI, D, A, B, C, 3, 10, 0x8f0ccc92);
+    OP(FI, C, D, A, B, 10, 15, 0xffeff47d);
+    OP(FI, B, C, D, A, 1, 21, 0x85845dd1);
+    OP(FI, A, B, C, D, 8, 6, 0x6fa87e4f);
+    OP(FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
+    OP(FI, C, D, A, B, 6, 15, 0xa3014314);
+    OP(FI, B, C, D, A, 13, 21, 0x4e0811a1);
+    OP(FI, A, B, C, D, 4, 6, 0xf7537e82);
+    OP(FI, D, A, B, C, 11, 10, 0xbd3af235);
+    OP(FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
+    OP(FI, B, C, D, A, 9, 21, 0xeb86d391);
+#endif
+#endif
+
+    /* Add the starting values of the context.  */
+    A += A_save;
+    B += B_save;
+    C += C_save;
+    D += D_save;
+  }
+
+  /* Put checksum in context given as argument.  */
+  ctx->A = A;
+  ctx->B = B;
+  ctx->C = C;
+  ctx->D = D;
+}
+
+//----------------------------------------------------------------------------
+//--------end of md5.c
+//----------------------------------------------------------------------------
+
+#define ISWHITE(c) ((c) == ' ' || (c) == '\t')
+#define ISXDIGIT(c) (isxdigit (c))
+
+/* The minimum length of a valid digest line in a file produced
+   by `md5sum FILE' and read by `md5sum -c'.  This length does
+   not include any newline character at the end of a line.  */
+static const int MIN_DIGEST_LINE_LENGTH = 35; /* 32 - message digest length
+                                      2 - blank and binary indicator
+                                      1 - minimum filename length */
+
+static inline int hex_digits(unsigned char const *s)
+{
+  while (*s) {
+    if (!ISXDIGIT(*s))
+      return 0;
+    ++s;
+  }
+  return 1;
+}
+
+
diff --git a/libopkg/md5.h b/libopkg/md5.h
new file mode 100644
index 0000000..7af7e93
--- /dev/null
+++ b/libopkg/md5.h
@@ -0,0 +1,35 @@
+/* md5.h - Compute MD5 checksum of files or strings according to the
+ *         definition of MD5 in RFC 1321 from April 1992.
+ * Copyright (C) 1995-1999 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef MD5_H
+#define MD5_H
+
+/* Compute MD5 message digest for bytes read from STREAM.  The
+   resulting message digest number will be written into the 16 bytes
+   beginning at RESBLOCK.  */
+int md5_stream(FILE *stream, void *resblock);
+
+/* Compute MD5 message digest for LEN bytes beginning at BUFFER.  The
+   result is always in little endian byte order, so that a byte-wise
+   output yields to the wanted ASCII representation of the message
+   digest.  */
+void *md5_buffer(const char *buffer, size_t len, void *resblock);
+
+#endif
+
diff --git a/libopkg/nv_pair.c b/libopkg/nv_pair.c
new file mode 100644
index 0000000..75a08e8
--- /dev/null
+++ b/libopkg/nv_pair.c
@@ -0,0 +1,40 @@
+/* nv_pair.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "nv_pair.h"
+#include "str_util.h"
+
+int nv_pair_init(nv_pair_t *nv_pair, const char *name, const char *value)
+{
+    nv_pair->name = str_dup_safe(name);
+    nv_pair->value = str_dup_safe(value);
+
+    return 0;
+}
+
+void nv_pair_deinit(nv_pair_t *nv_pair)
+{
+    free(nv_pair->name);
+    nv_pair->name = NULL;
+
+    free(nv_pair->value);
+    nv_pair->value = NULL;
+}
+
+
diff --git a/libopkg/nv_pair.h b/libopkg/nv_pair.h
new file mode 100644
index 0000000..664eab8
--- /dev/null
+++ b/libopkg/nv_pair.h
@@ -0,0 +1,32 @@
+/* nv_pair.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef NV_PAIR_H
+#define NV_PAIR_H
+
+typedef struct nv_pair nv_pair_t;
+struct nv_pair
+{
+    char *name;
+    char *value;
+};
+
+int nv_pair_init(nv_pair_t *nv_pair, const char *name, const char *value);
+void nv_pair_deinit(nv_pair_t *nv_pair);
+
+#endif
+
diff --git a/libopkg/nv_pair_list.c b/libopkg/nv_pair_list.c
new file mode 100644
index 0000000..b925322
--- /dev/null
+++ b/libopkg/nv_pair_list.c
@@ -0,0 +1,98 @@
+/* nv_pair_list.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "nv_pair.h"
+#include "void_list.h"
+#include "nv_pair_list.h"
+
+int nv_pair_list_elt_init(nv_pair_list_elt_t *elt, nv_pair_t *data)
+{
+    return void_list_elt_init((void_list_elt_t *) elt, data);
+}
+
+void nv_pair_list_elt_deinit(nv_pair_list_elt_t *elt)
+{
+    void_list_elt_deinit((void_list_elt_t *) elt);
+}
+
+int nv_pair_list_init(nv_pair_list_t *list)
+{
+    return void_list_init((void_list_t *) list);
+}
+
+void nv_pair_list_deinit(nv_pair_list_t *list)
+{
+    nv_pair_list_elt_t *iter;
+    nv_pair_t *nv_pair;
+
+    for (iter = list->head; iter; iter = iter->next) {
+	nv_pair = iter->data;
+	nv_pair_deinit(nv_pair);
+
+	/* malloced in nv_pair_list_append */
+	free(nv_pair);
+	iter->data = NULL;
+    }
+    void_list_deinit((void_list_t *) list);
+}
+
+nv_pair_t *nv_pair_list_append(nv_pair_list_t *list, const char *name, const char *value)
+{
+    int err;
+
+    /* freed in nv_pair_list_deinit */
+    nv_pair_t *nv_pair = malloc(sizeof(nv_pair_t));
+
+    if (nv_pair == NULL) {
+	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	return NULL;
+    }
+    nv_pair_init(nv_pair, name, value);
+
+    err = void_list_append((void_list_t *) list, nv_pair);
+    if (err) {
+	return NULL;
+    }
+
+    return nv_pair;
+}
+
+int nv_pair_list_push(nv_pair_list_t *list, nv_pair_t *data)
+{
+    return void_list_push((void_list_t *) list, data);
+}
+
+nv_pair_list_elt_t *nv_pair_list_pop(nv_pair_list_t *list)
+{
+    return (nv_pair_list_elt_t *) void_list_pop((void_list_t *) list);
+}
+
+char *nv_pair_list_find(nv_pair_list_t *list, char *name)
+{
+     nv_pair_list_elt_t *iter;
+     nv_pair_t *nv_pair;
+
+     for (iter = list->head; iter; iter = iter->next) {
+	  nv_pair = iter->data;
+	  if (strcmp(nv_pair->name, name) == 0) {
+	       return nv_pair->value;
+	  }
+     }    
+     return NULL;
+}
diff --git a/libopkg/nv_pair_list.h b/libopkg/nv_pair_list.h
new file mode 100644
index 0000000..8638dd1
--- /dev/null
+++ b/libopkg/nv_pair_list.h
@@ -0,0 +1,60 @@
+/* nv_pair_list.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef NV_PAIR_LIST_H
+#define NV_PAIR_LIST_H
+
+#include "nv_pair.h"
+#include "void_list.h"
+
+typedef struct nv_pair_list_elt nv_pair_list_elt_t;
+struct nv_pair_list_elt
+{
+    nv_pair_list_elt_t *next;
+    nv_pair_t *data;
+};
+
+typedef struct nv_pair_list nv_pair_list_t;
+struct nv_pair_list
+{
+    nv_pair_list_elt_t pre_head;
+    nv_pair_list_elt_t *head;
+    nv_pair_list_elt_t *tail;
+};
+
+static inline int nv_pair_list_empty(nv_pair_list_t *list)
+{
+     if (list->head == NULL)
+	  return 1;
+     else
+	  return 0;
+}
+
+int nv_pair_list_elt_init(nv_pair_list_elt_t *elt, nv_pair_t *data);
+void nv_pair_list_elt_deinit(nv_pair_list_elt_t *elt);
+
+int nv_pair_list_init(nv_pair_list_t *list);
+void nv_pair_list_deinit(nv_pair_list_t *list);
+
+nv_pair_t *nv_pair_list_append(nv_pair_list_t *list,
+			       const char *name, const char *value);
+int nv_pair_list_push(nv_pair_list_t *list, nv_pair_t *data);
+nv_pair_list_elt_t *nv_pair_list_pop(nv_pair_list_t *list);
+char *nv_pair_list_find(nv_pair_list_t *list, char *name);
+
+#endif
+
diff --git a/libopkg/opkg.c b/libopkg/opkg.c
new file mode 100644
index 0000000..e113847
--- /dev/null
+++ b/libopkg/opkg.c
@@ -0,0 +1,81 @@
+/* opkg.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "args.h"
+#include "opkg_conf.h"
+#include "opkg_cmd.h"
+
+int main(int argc, const char *argv[])
+{
+    int err, optind;
+    args_t args;
+    char *cmd_name;
+    opkg_cmd_t *cmd;
+    opkg_conf_t opkg_conf;
+
+    error_list=NULL;
+
+    args_init(&args);
+	
+    optind = args_parse(&args, argc, argv);
+    if (optind == argc || optind < 0) {
+	args_usage("opkg must have one sub-command argument");
+    }
+
+    cmd_name = argv[optind++];
+
+    err = opkg_conf_init(&opkg_conf, &args);
+    if (err) {
+	return err;
+    }
+
+    args_deinit(&args);
+
+    cmd = opkg_cmd_find(cmd_name);
+    if (cmd == NULL) {
+	fprintf(stderr, "%s: unknown sub-command %s\n", argv[0], cmd_name);
+	args_usage(NULL);
+    }
+
+    if (cmd->requires_args && optind == argc) {
+	fprintf(stderr, "%s: the ``%s'' command requires at least one argument\n",
+		__FUNCTION__, cmd_name);
+	args_usage(NULL);
+    }
+
+    err = opkg_cmd_exec(cmd, &opkg_conf, argc - optind, argv + optind);
+
+    if ( err == 0 ) {
+       opkg_message(opkg_conf, OPKG_NOTICE, "Succesfully done.\n");
+    } else {
+       opkg_message(opkg_conf, OPKG_NOTICE, "Error returned. Return value is %d\n.",err);
+
+}
+
+    }
+    /* XXX: FEATURE request: run ldconfig and/or depmod after package needing them are installed or removed */  
+    // opkg_global_postinst();
+
+    opkg_conf_deinit(&opkg_conf);
+
+    return err;
+}
+
+
+
diff --git a/libopkg/opkg.h b/libopkg/opkg.h
new file mode 100644
index 0000000..b6a793d
--- /dev/null
+++ b/libopkg/opkg.h
@@ -0,0 +1,68 @@
+/* opkg.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_H
+#define OPKG_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if 0
+#define OPKG_DEBUG_NO_TMP_CLEANUP
+#endif
+
+#include "includes.h"
+#include "opkg_conf.h"
+#include "opkg_message.h"
+
+#define OPKG_PKG_EXTENSION ".ipk"
+#define DPKG_PKG_EXTENSION ".deb"
+
+#define OPKG_LEGAL_PKG_NAME_CHARS "abcdefghijklmnopqrstuvwxyz0123456789.+-"
+#define OPKG_PKG_VERSION_SEP_CHAR '_'
+
+#define OPKG_STATE_DIR_PREFIX OPKGLIBDIR"/opkg"
+#define OPKG_LISTS_DIR_SUFFIX "lists"
+#define OPKG_INFO_DIR_SUFFIX "info"
+#define OPKG_STATUS_FILE_SUFFIX "status"
+
+#define OPKG_BACKUP_SUFFIX "-opkg.backup"
+
+#define OPKG_LIST_DESCRIPTION_LENGTH 128
+
+enum opkg_error {
+    OPKG_SUCCESS = 0,
+    OPKG_PKG_DEPS_UNSATISFIED,
+    OPKG_PKG_IS_ESSENTIAL,
+    OPKG_PKG_HAS_DEPENDENTS,
+    OPKG_PKG_HAS_NO_CANDIDATE
+};
+typedef enum opkg_error opkg_error_t;
+
+extern int opkg_state_changed;
+
+
+struct errlist {
+    char * errmsg;
+    struct errlist * next;
+} ;
+
+struct errlist* error_list;
+
+
+#endif
diff --git a/libopkg/opkg_cmd.c b/libopkg/opkg_cmd.c
new file mode 100644
index 0000000..db04a4a
--- /dev/null
+++ b/libopkg/opkg_cmd.c
@@ -0,0 +1,1467 @@
+/* opkg_cmd.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <string.h>
+
+#include "opkg.h"
+#include <libgen.h>
+#include <glob.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <dirent.h>
+
+#include "opkg_conf.h"
+#include "opkg_cmd.h"
+#include "opkg_message.h"
+#include "pkg.h"
+#include "pkg_dest.h"
+#include "pkg_parse.h"
+#include "sprintf_alloc.h"
+#include "pkg.h"
+#include "file_util.h"
+#include "str_util.h"
+#include "libbb/libbb.h"
+
+#include <fnmatch.h>
+
+
+#include "opkg_download.h"
+#include "opkg_install.h"
+#include "opkg_upgrade.h"
+#include "opkg_remove.h"
+#include "opkg_configure.h"
+#include "opkg_message.h"
+
+#ifdef OPKG_LIB
+#include "libopkg.h"
+static void *p_userdata = NULL;
+#endif
+
+static int opkg_update_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_upgrade_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_list_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_info_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_status_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_install_pending_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_install_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_list_installed_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_remove_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_purge_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_flag_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_files_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_search_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_download_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_depends_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatdepends_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatdepends_recursively_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatsuggests_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatrecommends_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatprovides_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatconflicts_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_whatreplaces_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_compare_versions_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_print_architecture_cmd(opkg_conf_t *conf, int argc, char **argv);
+static int opkg_configure_cmd(opkg_conf_t *conf, int argc, char **argv);
+
+/* XXX: CLEANUP: The usage strings should be incorporated into this
+   array for easier maintenance */
+static opkg_cmd_t cmds[] = {
+     {"update", 0, (opkg_cmd_fun_t)opkg_update_cmd}, 
+     {"upgrade", 0, (opkg_cmd_fun_t)opkg_upgrade_cmd},
+     {"list", 0, (opkg_cmd_fun_t)opkg_list_cmd},
+     {"list_installed", 0, (opkg_cmd_fun_t)opkg_list_installed_cmd},
+     {"info", 0, (opkg_cmd_fun_t)opkg_info_cmd},
+     {"flag", 1, (opkg_cmd_fun_t)opkg_flag_cmd},
+     {"status", 0, (opkg_cmd_fun_t)opkg_status_cmd},
+     {"install_pending", 0, (opkg_cmd_fun_t)opkg_install_pending_cmd},
+     {"install", 1, (opkg_cmd_fun_t)opkg_install_cmd},
+     {"remove", 1, (opkg_cmd_fun_t)opkg_remove_cmd},
+     {"purge", 1, (opkg_cmd_fun_t)opkg_purge_cmd},
+     {"configure", 0, (opkg_cmd_fun_t)opkg_configure_cmd},
+     {"files", 1, (opkg_cmd_fun_t)opkg_files_cmd},
+     {"search", 1, (opkg_cmd_fun_t)opkg_search_cmd},
+     {"download", 1, (opkg_cmd_fun_t)opkg_download_cmd},
+     {"compare_versions", 1, (opkg_cmd_fun_t)opkg_compare_versions_cmd},
+     {"compare-versions", 1, (opkg_cmd_fun_t)opkg_compare_versions_cmd},
+     {"print-architecture", 0, (opkg_cmd_fun_t)opkg_print_architecture_cmd},
+     {"print_architecture", 0, (opkg_cmd_fun_t)opkg_print_architecture_cmd},
+     {"print-installation-architecture", 0, (opkg_cmd_fun_t)opkg_print_architecture_cmd},
+     {"print_installation_architecture", 0, (opkg_cmd_fun_t)opkg_print_architecture_cmd},
+     {"depends", 1, (opkg_cmd_fun_t)opkg_depends_cmd},
+     {"whatdepends", 1, (opkg_cmd_fun_t)opkg_whatdepends_cmd},
+     {"whatdependsrec", 1, (opkg_cmd_fun_t)opkg_whatdepends_recursively_cmd},
+     {"whatrecommends", 1, (opkg_cmd_fun_t)opkg_whatrecommends_cmd},
+     {"whatsuggests", 1, (opkg_cmd_fun_t)opkg_whatsuggests_cmd},
+     {"whatprovides", 1, (opkg_cmd_fun_t)opkg_whatprovides_cmd},
+     {"whatreplaces", 1, (opkg_cmd_fun_t)opkg_whatreplaces_cmd},
+     {"whatconflicts", 1, (opkg_cmd_fun_t)opkg_whatconflicts_cmd},
+};
+
+int opkg_state_changed;
+static void write_status_files_if_changed(opkg_conf_t *conf)
+{
+     if (opkg_state_changed && !conf->noaction) {
+	  opkg_message(conf, OPKG_INFO,
+		       "  writing status file\n");
+	  opkg_conf_write_status_files(conf);
+	  pkg_write_changed_filelists(conf);
+     } else { 
+	  opkg_message(conf, OPKG_NOTICE, "Nothing to be done\n");
+     }
+}
+
+
+static int num_cmds = sizeof(cmds) / sizeof(opkg_cmd_t);
+
+opkg_cmd_t *opkg_cmd_find(const char *name)
+{
+     int i;
+     opkg_cmd_t *cmd;
+
+     for (i=0; i < num_cmds; i++) {
+	  cmd = &cmds[i];
+	  if (strcmp(name, cmd->name) == 0) {
+	       return cmd;
+	  }
+     }
+
+     return NULL;
+}
+
+#ifdef OPKG_LIB
+int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **argv, void *userdata)
+{
+	int result;
+	p_userdata = userdata;
+      
+
+	result = (cmd->fun)(conf, argc, argv);
+
+        if ( result != 0 ) {
+           opkg_message(conf, OPKG_NOTICE, "An error ocurred, return value: %d.\n", result);
+        }
+
+        if ( error_list ) {
+           reverse_error_list(&error_list);
+
+           opkg_message(conf, OPKG_NOTICE, "Collected errors:\n");
+           /* Here we print the errors collected and free the list */
+           while (error_list != NULL) {
+                 opkg_message(conf, OPKG_NOTICE, "%s",error_list->errmsg);
+                 error_list = error_list->next;
+
+           }
+           free_error_list(&error_list);
+
+        }
+   
+	p_userdata = NULL;
+	return result;
+}
+#else
+int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **argv)
+{
+     return (cmd->fun)(conf, argc, argv);
+}
+#endif
+
+static int opkg_update_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int err;
+     int failures;
+     char *lists_dir;
+     pkg_src_list_elt_t *iter;
+     pkg_src_t *src;
+
+ 
+    sprintf_alloc(&lists_dir, "%s", conf->restrict_to_default_dest ? conf->default_dest->lists_dir : conf->lists_dir);
+ 
+    if (! file_is_dir(lists_dir)) {
+	  if (file_exists(lists_dir)) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "%s: ERROR: %s exists, but is not a directory\n",
+			    __FUNCTION__, lists_dir);
+	       free(lists_dir);
+	       return EINVAL;
+	  }
+	  err = file_mkdir_hier(lists_dir, 0755);
+	  if (err) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "%s: ERROR: failed to make directory %s: %s\n",
+			    __FUNCTION__, lists_dir, strerror(errno));
+	       free(lists_dir);
+	       return EINVAL;
+	  }	
+     } 
+
+     failures = 0;
+     for (iter = conf->pkg_src_list.head; iter; iter = iter->next) {
+	  char *url, *list_file_name;
+
+	  src = iter->data;
+
+	  if (src->extra_data)	/* debian style? */
+	      sprintf_alloc(&url, "%s/%s/%s", src->value, src->extra_data, 
+			    src->gzip ? "Packages.gz" : "Packages");
+	  else
+	      sprintf_alloc(&url, "%s/%s", src->value, src->gzip ? "Packages.gz" : "Packages");
+
+	  sprintf_alloc(&list_file_name, "%s/%s", lists_dir, src->name);
+	  if (src->gzip) {
+	      char *tmp;
+	      char *tmp_file_name;
+	      FILE *in, *out;
+
+	      tmp = strdup ("/tmp/opkg.XXXXXX");
+
+	      if (mkdtemp (tmp) == NULL) {
+		  perror ("mkdtemp");
+		  failures++;
+		  continue;
+	      }
+	      
+	      sprintf_alloc (&tmp_file_name, "%s/%s.gz", tmp, src->name);
+	      err = opkg_download(conf, url, tmp_file_name);
+	      if (err == 0) {
+		   opkg_message (conf, OPKG_NOTICE, "Inflating %s\n", url);
+		   in = fopen (tmp_file_name, "r");
+		   out = fopen (list_file_name, "w");
+		   if (in && out)
+			unzip (in, out);
+		   else
+			err = 1;
+		   if (in)
+			fclose (in);
+		   if (out)
+			fclose (out);
+		   unlink (tmp_file_name);
+		   rmdir (tmp);
+		   free (tmp);
+	      }
+	  } else
+	      err = opkg_download(conf, url, list_file_name);
+	  if (err) {
+	       failures++;
+	  } else {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Updated list of available packages in %s\n",
+			    list_file_name);
+	  }
+	  free(url);
+
+	  /* download detached signitures to verify the package lists */
+	  /* get the url for the sig file */
+	  if (src->extra_data)	/* debian style? */
+	      sprintf_alloc(&url, "%s/%s/%s", src->value, src->extra_data,
+			    "Packages.sig");
+	  else
+	      sprintf_alloc(&url, "%s/%s", src->value, "Packages.sig");
+
+	  /* create temporary dir for it */
+	  char *tmp, *tmp_file_name;
+	  tmp = strdup ("/tmp/opkg.XXXXXX");
+	  if (mkdtemp (tmp) == NULL) {
+	 	perror ("mkdtemp");
+		failures++;
+		continue;
+	  }
+	  sprintf_alloc (&tmp_file_name, "%s/%s", tmp, "Packages.sig");
+
+	  err = opkg_download(conf, url, tmp_file_name);
+	  if (err) {
+	    failures++;
+		opkg_message (conf, OPKG_NOTICE, "Signature check failed\n");
+	  } else {
+	    int err;
+	    err = opkg_verify_file (list_file_name, tmp_file_name);
+	    if (err == 0)
+		opkg_message (conf, OPKG_NOTICE, "Signature check passed\n");
+	    else
+		opkg_message (conf, OPKG_NOTICE, "Signature check failed\n");
+	  }
+	  unlink (tmp_file_name);
+	  unlink (tmp);
+	  free (tmp_file_name);
+
+	  free (url);
+	  free(list_file_name);
+     }
+     free(lists_dir);
+
+#ifdef CONFIG_CLEAR_SW_INSTALL_FLAG
+#warning here
+     /* clear SW_INSTALL on any package where state is SS_NOT_INSTALLED.
+      * this is a hack to work around poor bookkeeping in old opkg upgrade code 
+      * -Jamey 3/1/03
+      */
+     {
+	  int i;
+	  int changed = 0;
+	  pkg_vec_t *available = pkg_vec_alloc();
+	  pkg_hash_fetch_available(&conf->pkg_hash, available);
+	  opkg_message(conf, OPKG_DEBUG, "Clearing SW_INSTALL for SS_NOT_INSTALLED packages.\n");
+	  for (i = 0; i < available->len; i++) {
+	       pkg_t *pkg = available->pkgs[i];
+	       if (pkg->state_want == SW_INSTALL && pkg->state_status == SS_NOT_INSTALLED) {
+		    opkg_message(conf, OPKG_DEBUG, "Clearing SW_INSTALL on package %s.\n", pkg->name);
+		    pkg->state_want = SW_UNKNOWN;
+		    changed = 1;
+	       }
+	  }
+	  pkg_vec_free(available);
+	  if (changed) {
+	       write_status_files_if_changed(conf);
+	  }
+     }
+#endif
+
+     return failures;
+}
+
+
+/* scan the args passed and cache the local filenames of the packages */
+int opkg_multiple_files_scan(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i;
+     int err;
+    
+     /* 
+      * First scan through package names/urls
+      * For any urls, download the packages and install in database.
+      * For any files, install package info in database.
+      */
+     for (i = 0; i < argc; i ++) {
+	  char *filename = argv [i];
+	  //char *tmp = basename (tmp);
+	  //int tmplen = strlen (tmp);
+
+	  //if (strcmp (tmp + (tmplen - strlen (OPKG_PKG_EXTENSION)), OPKG_PKG_EXTENSION) != 0)
+	  //     continue;
+	  //if (strcmp (tmp + (tmplen - strlen (DPKG_PKG_EXTENSION)), DPKG_PKG_EXTENSION) != 0)
+	  //     continue;
+	
+          opkg_message(conf, OPKG_DEBUG2, "Debug mfs: %s  \n",filename );
+
+	  err = opkg_prepare_url_for_install(conf, filename, &argv[i]);
+	  if (err)
+	    return err;
+     }
+     return 0;
+}
+
+struct opkg_intercept
+{
+    char *oldpath;
+    char *statedir;
+};
+
+typedef struct opkg_intercept *opkg_intercept_t;
+
+opkg_intercept_t opkg_prep_intercepts(opkg_conf_t *conf)
+{
+    opkg_intercept_t ctx;
+    char *newpath;
+    int gen;
+
+    ctx = malloc (sizeof (*ctx));
+    ctx->oldpath = strdup (getenv ("PATH"));
+
+    sprintf_alloc (&newpath, "%s/opkg/intercept:%s", DATADIR, ctx->oldpath);
+    setenv ("PATH", newpath, 1);
+    free (newpath);
+    
+    gen = 0;
+ retry:
+    sprintf_alloc (&ctx->statedir, "/tmp/opkg-intercept-%d-%d", getpid (), gen);
+    if (mkdir (ctx->statedir, 0770) < 0) {
+	if (errno == EEXIST) {
+	    free (ctx->statedir);
+	    gen++;
+	    goto retry;
+	}
+	perror (ctx->statedir);
+	return NULL;
+    }
+    setenv ("OPKG_INTERCEPT_DIR", ctx->statedir, 1);
+    return ctx;
+}
+
+int opkg_finalize_intercepts(opkg_intercept_t ctx)
+{
+    char *cmd;
+    DIR *dir;
+    int err = 0;
+
+    setenv ("PATH", ctx->oldpath, 1);
+    free (ctx->oldpath);
+
+    dir = opendir (ctx->statedir);
+    if (dir) {
+	struct dirent *de;
+	while (de = readdir (dir), de != NULL) {
+	    char *path;
+	    
+	    if (de->d_name[0] == '.')
+		continue;
+	    
+	    sprintf_alloc (&path, "%s/%s", ctx->statedir, de->d_name);
+	    if (access (path, X_OK) == 0) {
+		if (system (path)) {
+		    err = errno;
+		    perror (de->d_name);
+		}
+	    }
+	    free (path);
+	}
+    } else
+	perror (ctx->statedir);
+	
+    sprintf_alloc (&cmd, "rm -rf %s", ctx->statedir);
+    system (cmd);
+    free (cmd);
+
+    free (ctx->statedir);
+    free (ctx);
+
+    return err;
+}
+
+int opkg_configure_packages(opkg_conf_t *conf, char *pkg_name)
+{
+     pkg_vec_t *all;
+     int i;
+     pkg_t *pkg;
+     opkg_intercept_t ic;
+     int r, err = 0;
+
+     opkg_message(conf, OPKG_INFO,
+		  "Configuring unpacked packages\n");
+     fflush( stdout );
+
+     all = pkg_vec_alloc();
+     pkg_hash_fetch_available(&conf->pkg_hash, all);
+
+     ic = opkg_prep_intercepts (conf);
+    
+     for(i = 0; i < all->len; i++) {
+	  pkg = all->pkgs[i];
+
+	  if (pkg_name && fnmatch(pkg_name, pkg->name, 0)) 
+	       continue;
+
+	  if (pkg->state_status == SS_UNPACKED) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Configuring %s\n", pkg->name);
+	       fflush( stdout );
+	       r = opkg_configure(conf, pkg);
+	       if (r == 0) {
+		    pkg->state_status = SS_INSTALLED;
+		    pkg->parent->state_status = SS_INSTALLED;
+		    pkg->state_flag &= ~SF_PREFER;
+	       } else {
+		    if (!err)
+			err = r;
+	       }
+	  }
+     }
+
+     r = opkg_finalize_intercepts (ic);
+     if (r && !err)
+	 err = r;
+
+     pkg_vec_free(all);
+     return err;
+}
+
+static opkg_conf_t *global_conf;
+
+static void sigint_handler(int sig)
+{
+     signal(sig, SIG_DFL);
+     opkg_message(NULL, OPKG_NOTICE,
+		  "opkg: interrupted. writing out status database\n");
+     write_status_files_if_changed(global_conf);
+     exit(128 + sig);
+}
+
+static int opkg_install_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i;
+     char *arg;
+     int err=0;
+
+     global_conf = conf;
+     signal(SIGINT, sigint_handler);
+
+     /*
+      * Now scan through package names and install
+      */
+     for (i=0; i < argc; i++) {
+	  arg = argv[i];
+
+          opkg_message(conf, OPKG_DEBUG2, "Debug install_cmd: %s  \n",arg );
+          err = opkg_prepare_url_for_install(conf, arg, &argv[i]);
+          if (err != EINVAL && err != 0)
+              return err;
+     }
+     pkg_info_preinstall_check(conf);
+
+     for (i=0; i < argc; i++) {
+	  arg = argv[i];
+	  if (conf->multiple_providers)
+	       err = opkg_install_multi_by_name(conf, arg);
+	  else{
+	       err = opkg_install_by_name(conf, arg);
+          }
+	  if (err == OPKG_PKG_HAS_NO_CANDIDATE) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Cannot find package %s.\n"
+			    "Check the spelling or perhaps run 'opkg update'\n",
+			    arg);
+	  }
+     }
+
+     /* recheck to verify that all dependences are satisfied */
+     if (0) opkg_satisfy_all_dependences(conf);
+
+     opkg_configure_packages(conf, NULL);
+
+     write_status_files_if_changed(conf);
+
+     return err;
+}
+
+static int opkg_upgrade_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i;
+     pkg_t *pkg;
+     int err;
+
+     global_conf = conf;
+     signal(SIGINT, sigint_handler);
+
+     if (argc) {
+	  for (i=0; i < argc; i++) {
+	       char *arg = argv[i];
+
+               err = opkg_prepare_url_for_install(conf, arg, &arg);
+               if (err != EINVAL && err != 0)
+                   return err;
+	  }
+	  pkg_info_preinstall_check(conf);
+
+	  for (i=0; i < argc; i++) {
+	       char *arg = argv[i];
+	       if (conf->restrict_to_default_dest) {
+		    pkg = pkg_hash_fetch_installed_by_name_dest(&conf->pkg_hash,
+								argv[i],
+								conf->default_dest);
+		    if (pkg == NULL) {
+			 opkg_message(conf, OPKG_NOTICE,
+				      "Package %s not installed in %s\n",
+				      argv[i], conf->default_dest->name);
+			 continue;
+		    }
+	       } else {
+		    pkg = pkg_hash_fetch_installed_by_name(&conf->pkg_hash,
+							   argv[i]);
+	       }
+	       if (pkg)
+		    opkg_upgrade_pkg(conf, pkg);
+	       else {
+		    opkg_install_by_name(conf, arg);
+               }
+	  }
+     } else {
+	  pkg_vec_t *installed = pkg_vec_alloc();
+
+	  pkg_info_preinstall_check(conf);
+
+	  pkg_hash_fetch_all_installed(&conf->pkg_hash, installed);
+	  for (i = 0; i < installed->len; i++) {
+	       pkg = installed->pkgs[i];
+	       opkg_upgrade_pkg(conf, pkg);
+	  }
+	  pkg_vec_free(installed);
+     }
+
+     /* recheck to verify that all dependences are satisfied */
+     if (0) opkg_satisfy_all_dependences(conf);
+
+     opkg_configure_packages(conf, NULL);
+
+     write_status_files_if_changed(conf);
+
+     return 0;
+}
+
+static int opkg_download_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i, err;
+     char *arg;
+     pkg_t *pkg;
+
+     pkg_info_preinstall_check(conf);
+     for (i = 0; i < argc; i++) {
+	  arg = argv[i];
+
+	  pkg = pkg_hash_fetch_best_installation_candidate_by_name(conf, arg);
+	  if (pkg == NULL) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Cannot find package %s.\n"
+			    "Check the spelling or perhaps run 'opkg update'\n",
+			    arg);
+	       continue;
+	  }
+
+	  err = opkg_download_pkg(conf, pkg, ".");
+
+	  if (err) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Failed to download %s\n", pkg->name);
+	  } else {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Downloaded %s as %s\n",
+			    pkg->name, pkg->local_filename);
+	  }
+     }
+
+     return 0;
+}
+
+
+static int opkg_list_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i ;
+     pkg_vec_t *available;
+     pkg_t *pkg;
+     char desc_short[OPKG_LIST_DESCRIPTION_LENGTH];
+     char *newline;
+     char *pkg_name = NULL;
+     char *version_str;
+
+     if (argc > 0) {
+	  pkg_name = argv[0];
+     }
+     available = pkg_vec_alloc();
+     pkg_hash_fetch_available(&conf->pkg_hash, available);
+     for (i=0; i < available->len; i++) {
+	  pkg = available->pkgs[i];
+	  /* if we have package name or pattern and pkg does not match, then skip it */
+	  if (pkg_name && fnmatch(pkg_name, pkg->name, 0)) 
+	       continue;
+	  if (pkg->description) {
+	       strncpy(desc_short, pkg->description, OPKG_LIST_DESCRIPTION_LENGTH);
+	  } else {
+	       desc_short[0] = '\0';
+	  }
+	  desc_short[OPKG_LIST_DESCRIPTION_LENGTH - 1] = '\0';
+	  newline = strchr(desc_short, '\n');
+	  if (newline) {
+	       *newline = '\0';
+	  }
+#ifndef OPKG_LIB
+	  printf("%s - %s\n", pkg->name, desc_short);
+#else
+	  if (opkg_cb_list) {
+	  	version_str = pkg_version_str_alloc(pkg);
+	  	opkg_cb_list(pkg->name,desc_short,
+		                             version_str,
+	                                 pkg->state_status,
+	                                 p_userdata);
+		free(version_str);
+	  }
+#endif
+     }
+     pkg_vec_free(available);
+
+     return 0;
+}
+
+
+static int opkg_list_installed_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i ;
+     pkg_vec_t *available;
+     pkg_t *pkg;
+     char desc_short[OPKG_LIST_DESCRIPTION_LENGTH];
+     char *newline;
+     char *pkg_name = NULL;
+     char *version_str;
+
+     if (argc > 0) {
+	  pkg_name = argv[0];
+     }
+     available = pkg_vec_alloc();
+     pkg_hash_fetch_all_installed(&conf->pkg_hash, available);
+     for (i=0; i < available->len; i++) {
+	  pkg = available->pkgs[i];
+	  /* if we have package name or pattern and pkg does not match, then skip it */
+	  if (pkg_name && fnmatch(pkg_name, pkg->name, 0)) 
+	       continue;
+	  if (pkg->description) {
+	       strncpy(desc_short, pkg->description, OPKG_LIST_DESCRIPTION_LENGTH);
+	  } else {
+	       desc_short[0] = '\0';
+	  }
+	  desc_short[OPKG_LIST_DESCRIPTION_LENGTH - 1] = '\0';
+	  newline = strchr(desc_short, '\n');
+	  if (newline) {
+	       *newline = '\0';
+	  }
+#ifndef OPKG_LIB
+	  printf("%s - %s\n", pkg->name, desc_short);
+#else
+	  if (opkg_cb_list) {
+	  	version_str = pkg_version_str_alloc(pkg);
+	  	opkg_cb_list(pkg->name,desc_short,
+		                             version_str,
+	                                 pkg->state_status,
+	                                 p_userdata);
+		free(version_str);
+	  }
+#endif
+     }
+
+     return 0;
+}
+
+static int opkg_info_status_cmd(opkg_conf_t *conf, int argc, char **argv, int installed_only)
+{
+     int i;
+     pkg_vec_t *available;
+     pkg_t *pkg;
+     char *pkg_name = NULL;
+     char **pkg_fields = NULL;
+     int n_fields = 0;
+     char *buff ; // = (char *)malloc(1);
+
+     if (argc > 0) {
+	  pkg_name = argv[0];
+     }
+     if (argc > 1) {
+	  pkg_fields = &argv[1];
+	  n_fields = argc - 1;
+     }
+
+     available = pkg_vec_alloc();
+     if (installed_only)
+	  pkg_hash_fetch_all_installed(&conf->pkg_hash, available);
+     else
+	  pkg_hash_fetch_available(&conf->pkg_hash, available);
+     for (i=0; i < available->len; i++) {
+	  pkg = available->pkgs[i];
+	  if (pkg_name && fnmatch(pkg_name, pkg->name, 0)) {
+	       continue;
+	  }
+#ifndef OPKG_LIB
+	  if (n_fields) {
+	       for (j = 0; j < n_fields; j++)
+		    pkg_print_field(pkg, stdout, pkg_fields[j]);
+	  } else {
+	       pkg_print_info(pkg, stdout);
+	  }
+#else
+
+	  buff = pkg_formatted_info(pkg);
+          if ( buff ) {
+	       if (opkg_cb_status) opkg_cb_status(pkg->name,
+						  pkg->state_status,
+						  buff,
+						  p_userdata);
+/* 
+   We should not forget that actually the pointer is allocated. 
+   We need to free it :)  ( Thanks florian for seeing the error )
+*/
+               free(buff);
+          }
+#endif
+	  if (conf->verbosity > 1) {
+	       conffile_list_elt_t *iter;
+	       for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+		    conffile_t *cf = iter->data;
+		    int modified = conffile_has_been_modified(conf, cf);
+		    opkg_message(conf, OPKG_NOTICE, "conffile=%s md5sum=%s modified=%d\n",
+				 cf->name, cf->value, modified);
+	       }
+	  }
+     }
+#ifndef OPKG_LIB
+     if (buff)
+	  free(buff);
+#endif
+     pkg_vec_free(available);
+
+     return 0;
+}
+
+static int opkg_info_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_info_status_cmd(conf, argc, argv, 0);
+}
+
+static int opkg_status_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_info_status_cmd(conf, argc, argv, 1);
+}
+
+static int opkg_configure_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     
+     int err;
+     if (argc > 0) {
+	  char *pkg_name = NULL;
+
+	  pkg_name = argv[0];
+
+	  err = opkg_configure_packages (conf, pkg_name);
+     
+     } else {
+	  err = opkg_configure_packages (conf, NULL);
+     }
+
+     write_status_files_if_changed(conf);
+
+     return err;
+}
+
+static int opkg_install_pending_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i, err;
+     char *globpattern;
+     glob_t globbuf;
+    
+     sprintf_alloc(&globpattern, "%s/*" OPKG_PKG_EXTENSION, conf->pending_dir);
+     err = glob(globpattern, 0, NULL, &globbuf);
+     free(globpattern);
+     if (err) {
+	  return 0;
+     }
+
+     opkg_message(conf, OPKG_NOTICE,
+		  "The following packages in %s will now be installed.\n",
+		  conf->pending_dir);
+     for (i = 0; i < globbuf.gl_pathc; i++) {
+	  opkg_message(conf, OPKG_NOTICE,
+		       "%s%s", i == 0 ? "" : " ", globbuf.gl_pathv[i]);
+     }
+     opkg_message(conf, OPKG_NOTICE, "\n");
+     for (i = 0; i < globbuf.gl_pathc; i++) {
+	  err = opkg_install_from_file(conf, globbuf.gl_pathv[i]);
+	  if (err == 0) {
+	       err = unlink(globbuf.gl_pathv[i]);
+	       if (err) {
+		    opkg_message(conf, OPKG_ERROR,
+				 "%s: ERROR: failed to unlink %s: %s\n",
+				 __FUNCTION__, globbuf.gl_pathv[i], strerror(err));
+		    return err;
+	       }
+	  }
+     }
+     globfree(&globbuf);
+
+     return err;
+}
+
+static int opkg_remove_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i,a,done;
+     pkg_t *pkg;
+     pkg_t *pkg_to_remove;
+     pkg_vec_t *available;
+     char *pkg_name = NULL;
+     global_conf = conf;
+     signal(SIGINT, sigint_handler);
+
+// ENH: Add the "no pkg removed" just in case.
+
+    done = 0;
+
+     available = pkg_vec_alloc();
+     pkg_info_preinstall_check(conf);
+     if ( argc > 0 ) {
+        pkg_hash_fetch_all_installed(&conf->pkg_hash, available);
+        for (i=0; i < argc; i++) {
+           pkg_name = malloc(strlen(argv[i])+2);
+           strcpy(pkg_name,argv[i]);
+           for (a=0; a < available->len; a++) {
+               pkg = available->pkgs[a];
+	       if (pkg_name && fnmatch(pkg_name, pkg->name, 0)) {
+                  continue;
+               }
+               if (conf->restrict_to_default_dest) {
+	            pkg_to_remove = pkg_hash_fetch_installed_by_name_dest(&conf->pkg_hash,
+							        pkg->name,
+							        conf->default_dest);
+               } else {
+	            pkg_to_remove = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg->name );
+               }
+        
+               if (pkg == NULL) {
+	            opkg_message(conf, OPKG_ERROR, "Package %s is not installed.\n", pkg->name);
+	            continue;
+               }
+               if (pkg->state_status == SS_NOT_INSTALLED) {    // Added the control, so every already removed package could be skipped
+	            opkg_message(conf, OPKG_ERROR, "Package seems to be %s not installed (STATUS = NOT_INSTALLED).\n", pkg->name);
+                    continue;
+               }
+               opkg_remove_pkg(conf, pkg_to_remove,0);
+               done = 1;
+           }
+           free (pkg_name);
+        }
+        pkg_vec_free(available);
+     } else {
+	  pkg_vec_t *installed_pkgs = pkg_vec_alloc();
+	  int i;
+	  int flagged_pkg_count = 0;
+	  int removed;
+
+	  pkg_hash_fetch_all_installed(&conf->pkg_hash, installed_pkgs);
+
+	  for (i = 0; i < installed_pkgs->len; i++) {
+	       pkg_t *pkg = installed_pkgs->pkgs[i];
+	       if (pkg->state_flag & SF_USER) {
+		    flagged_pkg_count++;
+	       } else {
+		    if (!pkg_has_installed_dependents(conf, pkg->parent, pkg, NULL))
+			 opkg_message(conf, OPKG_NOTICE, "Non-user leaf package: %s\n", pkg->name);
+	       }
+	  }
+	  if (!flagged_pkg_count) {
+	       opkg_message(conf, OPKG_NOTICE, "No packages flagged as installed by user, \n"
+			    "so refusing to uninstall unflagged non-leaf packages\n");
+	       return 0;
+	  }
+
+	  /* find packages not flagged SF_USER (i.e., installed to
+	   * satisfy a dependence) and not having any dependents, and
+	   * remove them */
+	  do {
+	       removed = 0;
+	       for (i = 0; i < installed_pkgs->len; i++) {
+		    pkg_t *pkg = installed_pkgs->pkgs[i];
+		    if (!(pkg->state_flag & SF_USER)
+			&& !pkg_has_installed_dependents(conf, pkg->parent, pkg, NULL)) {
+			 removed++;
+			 opkg_message(conf, OPKG_NOTICE, "Removing non-user leaf package %s\n");
+			 opkg_remove_pkg(conf, pkg,0);
+                         done = 1;
+		    }
+	       }
+	  } while (removed);
+	  pkg_vec_free(installed_pkgs);
+     }
+
+     if ( done == 0 ) 
+        opkg_message(conf, OPKG_NOTICE, "No packages removed.\n");
+
+     write_status_files_if_changed(conf);
+     return 0;
+}
+
+static int opkg_purge_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i;
+     pkg_t *pkg;
+
+     global_conf = conf;
+     signal(SIGINT, sigint_handler);
+
+     pkg_info_preinstall_check(conf);
+
+     for (i=0; i < argc; i++) {
+	  if (conf->restrict_to_default_dest) {
+	       pkg = pkg_hash_fetch_installed_by_name_dest(&conf->pkg_hash,
+							   argv[i],
+							   conf->default_dest);
+	  } else {
+	       pkg = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, argv[i]);
+	  }
+
+	  if (pkg == NULL) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Package %s is not installed.\n", argv[i]);
+	       continue;
+	  }
+	  opkg_purge_pkg(conf, pkg);
+     }
+
+     write_status_files_if_changed(conf);
+     return 0;
+}
+
+static int opkg_flag_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i;
+     pkg_t *pkg;
+     const char *flags = argv[0];
+    
+     global_conf = conf;
+     signal(SIGINT, sigint_handler);
+
+     for (i=1; i < argc; i++) {
+	  if (conf->restrict_to_default_dest) {
+	       pkg = pkg_hash_fetch_installed_by_name_dest(&conf->pkg_hash,
+							   argv[i],
+							   conf->default_dest);
+	  } else {
+	       pkg = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, argv[i]);
+	  }
+
+	  if (pkg == NULL) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Package %s is not installed.\n", argv[i]);
+	       continue;
+	  }
+          if (( strcmp(flags,"hold")==0)||( strcmp(flags,"noprune")==0)||
+              ( strcmp(flags,"user")==0)||( strcmp(flags,"ok")==0)) {
+	      pkg->state_flag = pkg_state_flag_from_str(flags);
+          }
+/* pb_ asked this feature 03292004 */
+/* Actually I will use only this two, but this is an open for various status */
+          if (( strcmp(flags,"installed")==0)||( strcmp(flags,"unpacked")==0)){
+	      pkg->state_status = pkg_state_status_from_str(flags);
+          }
+	  opkg_state_changed++;
+	  opkg_message(conf, OPKG_NOTICE,
+		       "Setting flags for package %s to %s\n",
+		       pkg->name, flags);
+     }
+
+     write_status_files_if_changed(conf);
+     return 0;
+}
+
+static int opkg_files_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     pkg_t *pkg;
+     str_list_t *installed_files;
+     str_list_elt_t *iter;
+     char *pkg_version;
+     size_t buff_len = 8192;
+     size_t used_len;
+     char *buff ;
+
+     buff = (char *)malloc(buff_len);
+     if ( buff == NULL ) {
+        fprintf( stderr,"%s: Unable to allocate memory \n",__FUNCTION__);
+        return ENOMEM;
+     }
+ 
+     if (argc < 1) {
+	  return EINVAL;
+     }
+
+     pkg = pkg_hash_fetch_installed_by_name(&conf->pkg_hash,
+					    argv[0]);
+     if (pkg == NULL) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "Package %s not installed.\n", argv[0]);
+	  return 0;
+     }
+
+     installed_files = pkg_get_installed_files(pkg);
+     pkg_version = pkg_version_str_alloc(pkg);
+
+#ifndef OPKG_LIB
+     printf("Package %s (%s) is installed on %s and has the following files:\n",
+	    pkg->name, pkg_version, pkg->dest->name);
+     for (iter = installed_files->head; iter; iter = iter->next) {
+	  puts(iter->data);
+     }
+#else
+     if (buff) {
+     try_again:
+	  used_len = snprintf(buff, buff_len, "Package %s (%s) is installed on %s and has the following files:\n",
+			      pkg->name, pkg_version, pkg->dest->name) + 1;
+	  if (used_len > buff_len) {
+	       buff_len *= 2;
+	       buff = realloc (buff, buff_len);
+	       goto try_again;
+	  }
+	  for (iter = installed_files->head; iter; iter = iter->next) {
+	       used_len += strlen (iter->data) + 1;
+	       while (buff_len <= used_len) {
+		    buff_len *= 2;
+		    buff = realloc (buff, buff_len);
+	       }
+	       strncat(buff, iter->data, buff_len);
+	       strncat(buff, "\n", buff_len);
+	  } 
+	  if (opkg_cb_list) opkg_cb_list(pkg->name,
+					 buff,
+					 pkg_version_str_alloc(pkg),
+					 pkg->state_status,
+					 p_userdata);
+	  free(buff);
+     }
+#endif
+
+     free(pkg_version);
+     pkg_free_installed_files(pkg);
+
+     return 0;
+}
+
+static int opkg_depends_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+
+     if (argc > 0) {
+	  pkg_vec_t *available_pkgs = pkg_vec_alloc();
+	  const char *rel_str = "depends on";
+	  int i;
+     
+	  pkg_info_preinstall_check(conf);
+
+	  if (conf->query_all)
+	       pkg_hash_fetch_available(&conf->pkg_hash, available_pkgs);
+	  else
+	       pkg_hash_fetch_all_installed(&conf->pkg_hash, available_pkgs);
+	  for (i = 0; i < argc; i++) {
+	       const char *target = argv[i];
+	       int j;
+
+	       opkg_message(conf, OPKG_ERROR, "target=%s\n", target);
+
+	       for (j = 0; j < available_pkgs->len; j++) {
+		    pkg_t *pkg = available_pkgs->pkgs[j];
+		    if (fnmatch(target, pkg->name, 0) == 0) {
+			 int k;
+			 int count = pkg->depends_count + pkg->pre_depends_count;
+			 opkg_message(conf, OPKG_ERROR, "What %s (arch=%s) %s\n",
+				      target, pkg->architecture, rel_str);
+			 for (k = 0; k < count; k++) {
+			      compound_depend_t *cdepend = &pkg->depends[k];
+			      int l;
+			      for (l = 0; l < cdepend->possibility_count; l++) {
+				   depend_t *possibility = cdepend->possibilities[l];
+				   opkg_message(conf, OPKG_ERROR, "    %s", possibility->pkg->name);
+				   if (conf->verbosity > 0) {
+					// char *ver = abstract_pkg_version_str_alloc(possibility->pkg); 
+					opkg_message(conf, OPKG_NOTICE, " %s", possibility->version);
+					if (possibility->version) {
+					     char *typestr = NULL;
+					     switch (possibility->constraint) {
+					     case NONE: typestr = "none"; break;
+					     case EARLIER: typestr = "<"; break;
+					     case EARLIER_EQUAL: typestr = "<="; break;
+					     case EQUAL: typestr = "="; break;
+					     case LATER_EQUAL: typestr = ">="; break;
+					     case LATER: typestr = ">"; break;
+					     }
+					     opkg_message(conf, OPKG_NOTICE, " (%s %s)", typestr, possibility->version);
+					}
+					// free(ver);
+				   }
+				   opkg_message(conf, OPKG_ERROR, "\n");
+			      }
+			 }
+		    }
+	       }
+	  }
+	  pkg_vec_free(available_pkgs);
+     }
+     return 0;
+}
+
+enum what_field_type {
+  WHATDEPENDS,
+  WHATCONFLICTS,
+  WHATPROVIDES,
+  WHATREPLACES,
+  WHATRECOMMENDS,
+  WHATSUGGESTS
+};
+
+static int opkg_what_depends_conflicts_cmd(opkg_conf_t *conf, enum what_field_type what_field_type, int recursive, int argc, char **argv)
+{
+
+     if (argc > 0) {
+	  pkg_vec_t *available_pkgs = pkg_vec_alloc();
+	  const char *rel_str = NULL;
+	  int i;
+	  int changed;
+
+	  switch (what_field_type) {
+	  case WHATDEPENDS: rel_str = "depends on"; break;
+	  case WHATCONFLICTS: rel_str = "conflicts with"; break;
+	  case WHATSUGGESTS: rel_str = "suggests"; break;
+	  case WHATRECOMMENDS: rel_str = "recommends"; break;
+	  case WHATPROVIDES: rel_str = "provides"; break;
+	  case WHATREPLACES: rel_str = "replaces"; break;
+	  }
+     
+	  if (conf->query_all)
+	       pkg_hash_fetch_available(&conf->pkg_hash, available_pkgs);
+	  else
+	       pkg_hash_fetch_all_installed(&conf->pkg_hash, available_pkgs);
+
+	  /* mark the root set */
+	  pkg_vec_clear_marks(available_pkgs);
+	  opkg_message(conf, OPKG_NOTICE, "Root set:\n");
+	  for (i = 0; i < argc; i++) {
+	       const char *dependee_pattern = argv[i];
+	       pkg_vec_mark_if_matches(available_pkgs, dependee_pattern);
+	  }
+	  for (i = 0; i < available_pkgs->len; i++) {
+	       pkg_t *pkg = available_pkgs->pkgs[i];
+	       if (pkg->state_flag & SF_MARKED) {
+		    /* mark the parent (abstract) package */
+		    pkg_mark_provides(pkg);
+		    opkg_message(conf, OPKG_NOTICE, "  %s\n", pkg->name);
+	       }
+	  }
+
+	  opkg_message(conf, OPKG_NOTICE, "What %s root set\n", rel_str);
+	  do {
+	       int j;
+	       changed = 0;
+
+	       for (j = 0; j < available_pkgs->len; j++) {
+		    pkg_t *pkg = available_pkgs->pkgs[j];
+		    int k;
+		    int count = ((what_field_type == WHATCONFLICTS)
+				 ? pkg->conflicts_count
+				 : pkg->pre_depends_count + pkg->depends_count + pkg->recommends_count + pkg->suggests_count);
+		    /* skip this package if it is already marked */
+		    if (pkg->parent->state_flag & SF_MARKED) {
+			 continue;
+		    }
+		    for (k = 0; k < count; k++) {
+			 compound_depend_t *cdepend = 
+			      (what_field_type == WHATCONFLICTS) ? &pkg->conflicts[k] : &pkg->depends[k];
+			 int l;
+			 for (l = 0; l < cdepend->possibility_count; l++) {
+			      depend_t *possibility = cdepend->possibilities[l];
+			      if (possibility->pkg->state_flag & SF_MARKED) {
+				   /* mark the depending package so we won't visit it again */
+				   pkg->state_flag |= SF_MARKED;
+				   pkg_mark_provides(pkg);
+				   changed++;
+
+				   opkg_message(conf, OPKG_NOTICE, "    %s", pkg->name);
+				   if (conf->verbosity > 0) {
+					char *ver = pkg_version_str_alloc(pkg); 
+					opkg_message(conf, OPKG_NOTICE, " %s", ver);
+					opkg_message(conf, OPKG_NOTICE, "\t%s %s", rel_str, possibility->pkg->name);
+					if (possibility->version) {
+					     char *typestr = NULL;
+					     switch (possibility->constraint) {
+					     case NONE: typestr = "none"; break;
+					     case EARLIER: typestr = "<"; break;
+					     case EARLIER_EQUAL: typestr = "<="; break;
+					     case EQUAL: typestr = "="; break;
+					     case LATER_EQUAL: typestr = ">="; break;
+					     case LATER: typestr = ">"; break;
+					     }
+					     opkg_message(conf, OPKG_NOTICE, " (%s %s)", typestr, possibility->version);
+					}
+					free(ver);
+					if (!pkg_dependence_satisfiable(conf, possibility))
+					     opkg_message(conf, OPKG_NOTICE, " unsatisfiable");
+				   }
+				   opkg_message(conf, OPKG_NOTICE, "\n");
+				   goto next_package;
+			      }
+			 }
+		    }
+	       next_package:
+		    ;
+	       }
+	  } while (changed && recursive);
+	  pkg_vec_free(available_pkgs);
+     }
+
+     return 0;
+}
+
+int pkg_mark_provides(pkg_t *pkg)
+{
+     int provides_count = pkg->provides_count;
+     abstract_pkg_t **provides = pkg->provides;
+     int i;
+     pkg->parent->state_flag |= SF_MARKED;
+     for (i = 0; i < provides_count; i++) {
+	  provides[i]->state_flag |= SF_MARKED;
+     }
+     return 0;
+}
+
+static int opkg_whatdepends_recursively_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_depends_conflicts_cmd(conf, WHATDEPENDS, 1, argc, argv);
+}
+static int opkg_whatdepends_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_depends_conflicts_cmd(conf, WHATDEPENDS, 0, argc, argv);
+}
+
+static int opkg_whatsuggests_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_depends_conflicts_cmd(conf, WHATSUGGESTS, 0, argc, argv);
+}
+
+static int opkg_whatrecommends_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_depends_conflicts_cmd(conf, WHATRECOMMENDS, 0, argc, argv);
+}
+
+static int opkg_whatconflicts_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_depends_conflicts_cmd(conf, WHATCONFLICTS, 0, argc, argv);
+}
+
+static int opkg_what_provides_replaces_cmd(opkg_conf_t *conf, enum what_field_type what_field_type, int argc, char **argv)
+{
+
+     if (argc > 0) {
+	  pkg_vec_t *available_pkgs = pkg_vec_alloc();
+	  const char *rel_str = (what_field_type == WHATPROVIDES ? "provides" : "replaces");
+	  int i;
+     
+	  pkg_info_preinstall_check(conf);
+
+	  if (conf->query_all)
+	       pkg_hash_fetch_available(&conf->pkg_hash, available_pkgs);
+	  else
+	       pkg_hash_fetch_all_installed(&conf->pkg_hash, available_pkgs);
+	  for (i = 0; i < argc; i++) {
+	       const char *target = argv[i];
+	       int j;
+
+	       opkg_message(conf, OPKG_ERROR, "What %s %s\n",
+			    rel_str, target);
+	       for (j = 0; j < available_pkgs->len; j++) {
+		    pkg_t *pkg = available_pkgs->pkgs[j];
+		    int k;
+		    int count = (what_field_type == WHATPROVIDES) ? pkg->provides_count : pkg->replaces_count;
+		    for (k = 0; k < count; k++) {
+			 abstract_pkg_t *apkg = 
+			      ((what_field_type == WHATPROVIDES) 
+			       ? pkg->provides[k]
+			       : pkg->replaces[k]);
+			 if (fnmatch(target, apkg->name, 0) == 0) {
+			      opkg_message(conf, OPKG_ERROR, "    %s", pkg->name);
+			      if (strcmp(target, apkg->name) != 0)
+				   opkg_message(conf, OPKG_ERROR, "\t%s %s\n", rel_str, apkg->name);
+			      opkg_message(conf, OPKG_ERROR, "\n");
+			 }
+		    }
+	       }
+	  }
+	  pkg_vec_free(available_pkgs);
+     }
+     return 0;
+}
+
+static int opkg_whatprovides_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_provides_replaces_cmd(conf, WHATPROVIDES, argc, argv);
+}
+
+static int opkg_whatreplaces_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     return opkg_what_provides_replaces_cmd(conf, WHATREPLACES, argc, argv);
+}
+
+static int opkg_search_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     int i;
+
+     pkg_vec_t *installed;
+     pkg_t *pkg;
+     str_list_t *installed_files;
+     str_list_elt_t *iter;
+     char *installed_file;
+
+     if (argc < 1) {
+	  return EINVAL;
+     }
+ 
+     installed = pkg_vec_alloc();
+     pkg_hash_fetch_all_installed(&conf->pkg_hash, installed);
+
+     for (i=0; i < installed->len; i++) {
+	  pkg = installed->pkgs[i];
+
+	  installed_files = pkg_get_installed_files(pkg);
+
+	  for (iter = installed_files->head; iter; iter = iter->next) {
+	       installed_file = iter->data;
+	       if (fnmatch(argv[0], installed_file, 0)==0)  {
+#ifndef OPKG_LIB
+		    printf("%s: %s\n", pkg->name, installed_file);
+#else
+			if (opkg_cb_list) opkg_cb_list(pkg->name, 
+						       installed_file, 
+			                               pkg_version_str_alloc(pkg), 
+			                               pkg->state_status, p_userdata);
+#endif			   
+	       }		
+	  }
+
+	  pkg_free_installed_files(pkg);
+     }
+
+     /* XXX: CLEANUP: It's not obvious from the name of
+	pkg_hash_fetch_all_installed that we need to call
+	pkg_vec_free to avoid a memory leak. */
+     pkg_vec_free(installed);
+
+     return 0;
+}
+
+static int opkg_compare_versions_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     if (argc == 3) {
+	  /* this is a bit gross */
+	  struct pkg p1, p2;
+	  parseVersion(&p1, argv[0]); 
+	  parseVersion(&p2, argv[2]); 
+	  return pkg_version_satisfied(&p1, &p2, argv[1]);
+     } else {
+	  opkg_message(conf, OPKG_ERROR,
+		       "opkg compare_versions <v1> <op> <v2>\n"
+		       "<op> is one of <= >= << >> =\n");
+	  return -1;
+     }
+}
+
+#ifndef HOST_CPU_STR
+#define HOST_CPU_STR__(X) #X
+#define HOST_CPU_STR_(X) HOST_CPU_STR__(X)
+#define HOST_CPU_STR HOST_CPU_STR_(HOST_CPU_FOO)
+#endif
+
+static int opkg_print_architecture_cmd(opkg_conf_t *conf, int argc, char **argv)
+{
+     nv_pair_list_elt_t *l;
+
+     l = conf->arch_list.head;
+     while (l) {
+	  nv_pair_t *nv = l->data;
+	  printf("arch %s %s\n", nv->name, nv->value);
+	  l = l->next;
+     }
+     return 0;
+}
+
+
diff --git a/libopkg/opkg_cmd.h b/libopkg/opkg_cmd.h
new file mode 100644
index 0000000..157e929
--- /dev/null
+++ b/libopkg/opkg_cmd.h
@@ -0,0 +1,46 @@
+/* opkg_cmd.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_CMD_H
+#define OPKG_CMD_H
+
+typedef int (*opkg_cmd_fun_t)(opkg_conf_t *conf, int argc, const char **argv);
+
+struct opkg_cmd
+{
+    char *name;
+    int requires_args;
+    opkg_cmd_fun_t fun;
+};
+typedef struct opkg_cmd opkg_cmd_t;
+
+opkg_cmd_t *opkg_cmd_find(const char *name);
+#ifdef OPKG_LIB
+int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, 
+                  const char **argv, void *userdata);
+#else
+int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **argv);
+#endif
+int opkg_multiple_files_scan (opkg_conf_t *conf, int argc, char *argv[]);
+/* install any packges with state_want == SW_INSTALL */
+int opkg_install_wanted_packages(opkg_conf_t *conf);
+/* ensure that all dependences are satisfied */
+int opkg_configure_packages(opkg_conf_t *conf, char *pkg_name);
+
+int pkg_mark_provides(pkg_t *pkg);
+
+#endif
diff --git a/libopkg/opkg_conf.c b/libopkg/opkg_conf.c
new file mode 100644
index 0000000..abeab19
--- /dev/null
+++ b/libopkg/opkg_conf.c
@@ -0,0 +1,717 @@
+/* opkg_conf.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <glob.h>
+
+#include "opkg.h"
+#include "opkg_conf.h"
+
+#include "xregex.h"
+#include "sprintf_alloc.h"
+#include "opkg_conf.h"
+#include "opkg_message.h"
+#include "file_util.h"
+#include "str_util.h"
+#include "xsystem.h"
+
+static int opkg_conf_parse_file(opkg_conf_t *conf, const char *filename,
+				pkg_src_list_t *pkg_src_list,
+				nv_pair_list_t *tmp_dest_nv_pair_list,
+				char **tmp_lists_dir);
+static int opkg_init_options_array(const opkg_conf_t *conf, opkg_option_t **options);
+static int opkg_conf_set_option(const opkg_option_t *options,
+				const char *name, const char *value);
+static int opkg_conf_set_default_dest(opkg_conf_t *conf,
+				      const char *default_dest_name);
+static int set_and_load_pkg_src_list(opkg_conf_t *conf,
+				     pkg_src_list_t *nv_pair_list);
+static int set_and_load_pkg_dest_list(opkg_conf_t *conf,
+				      nv_pair_list_t *nv_pair_list, char * lists_dir);
+
+int opkg_init_options_array(const opkg_conf_t *conf, opkg_option_t **options)
+{
+     opkg_option_t tmp[] = {
+	  { "force_defaults", OPKG_OPT_TYPE_BOOL, &conf->force_defaults },
+	  { "force_depends", OPKG_OPT_TYPE_BOOL, &conf->force_depends },
+	  { "force_overwrite", OPKG_OPT_TYPE_BOOL, &conf->force_overwrite },
+	  { "force_downgrade", OPKG_OPT_TYPE_BOOL, &conf->force_downgrade },
+	  { "force_reinstall", OPKG_OPT_TYPE_BOOL, &conf->force_reinstall },
+	  { "force_space", OPKG_OPT_TYPE_BOOL, &conf->force_space },
+	  { "ftp_proxy", OPKG_OPT_TYPE_STRING, &conf->ftp_proxy },
+	  { "http_proxy", OPKG_OPT_TYPE_STRING, &conf->http_proxy },
+	  { "multiple_providers", OPKG_OPT_TYPE_BOOL, &conf->multiple_providers },
+	  { "no_proxy", OPKG_OPT_TYPE_STRING, &conf->no_proxy },
+	  { "test", OPKG_OPT_TYPE_INT, &conf->noaction },
+	  { "noaction", OPKG_OPT_TYPE_INT, &conf->noaction },
+	  { "nodeps", OPKG_OPT_TYPE_BOOL, &conf->nodeps },
+	  { "offline_root", OPKG_OPT_TYPE_STRING, &conf->offline_root },
+	  { "offline_root_post_script_cmd", OPKG_OPT_TYPE_STRING, &conf->offline_root_post_script_cmd },
+	  { "offline_root_pre_script_cmd", OPKG_OPT_TYPE_STRING, &conf->offline_root_pre_script_cmd },
+	  { "proxy_passwd", OPKG_OPT_TYPE_STRING, &conf->proxy_passwd },
+	  { "proxy_user", OPKG_OPT_TYPE_STRING, &conf->proxy_user },
+	  { "query-all", OPKG_OPT_TYPE_BOOL, &conf->query_all },
+	  { "verbose-wget", OPKG_OPT_TYPE_BOOL, &conf->verbose_wget },
+	  { "verbosity", OPKG_OPT_TYPE_BOOL, &conf->verbosity },
+	  { NULL }
+     };
+
+     *options = (opkg_option_t *)malloc(sizeof(tmp));
+     if ( options == NULL ){
+        fprintf(stderr,"%s: Unable to allocate memory\n",__FUNCTION__);
+        return -1;
+     }
+
+     memcpy(*options, tmp, sizeof(tmp));
+     return 0;
+};
+
+static void opkg_conf_override_string(char **conf_str, char *arg_str) 
+{
+     if (arg_str) {
+	  if (*conf_str) {
+	       free(*conf_str);
+	  }
+	  *conf_str = strdup(arg_str);
+     }
+}
+
+static void opkg_conf_free_string(char **conf_str)
+{
+     if (*conf_str) {
+	  free(*conf_str);
+	  *conf_str = NULL;
+     }
+}
+
+int opkg_conf_init(opkg_conf_t *conf, const args_t *args)
+{
+     int err;
+     char *tmp_dir_base;
+     nv_pair_list_t tmp_dest_nv_pair_list;
+     char * lists_dir =NULL;
+     glob_t globbuf;
+     char *etc_opkg_conf_pattern = "/etc/opkg/*.conf";
+     char *pending_dir  =NULL;
+
+     memset(conf, 0, sizeof(opkg_conf_t));
+
+     pkg_src_list_init(&conf->pkg_src_list);
+
+     nv_pair_list_init(&tmp_dest_nv_pair_list);
+     pkg_dest_list_init(&conf->pkg_dest_list);
+
+     nv_pair_list_init(&conf->arch_list);
+
+     conf->restrict_to_default_dest = 0;
+     conf->default_dest = NULL;
+
+
+     if (args->tmp_dir)
+	  tmp_dir_base = args->tmp_dir;
+     else 
+	  tmp_dir_base = getenv("TMPDIR");
+     sprintf_alloc(&conf->tmp_dir, "%s/%s",
+		   tmp_dir_base ? tmp_dir_base : OPKG_CONF_DEFAULT_TMP_DIR_BASE,
+		   OPKG_CONF_TMP_DIR_SUFFIX);
+     conf->tmp_dir = mkdtemp(conf->tmp_dir);
+     if (conf->tmp_dir == NULL) {
+	  fprintf(stderr, "%s: Failed to create temporary directory `%s': %s\n",
+		  __FUNCTION__, conf->tmp_dir, strerror(errno));
+	  return errno;
+     }
+
+     conf->force_depends = 0;
+     conf->force_defaults = 0;
+     conf->force_overwrite = 0;
+     conf->force_downgrade = 0;
+     conf->force_reinstall = 0;
+     conf->force_space = 0;
+     conf->force_removal_of_essential_packages = 0;
+     conf->force_removal_of_dependent_packages = 0;
+     conf->nodeps = 0;
+     conf->verbose_wget = 0;
+     conf->offline_root = NULL;
+     conf->offline_root_pre_script_cmd = NULL;
+     conf->offline_root_post_script_cmd = NULL;
+     conf->multiple_providers = 0;
+     conf->verbosity = 1;
+     conf->noaction = 0;
+
+     conf->http_proxy = NULL;
+     conf->ftp_proxy = NULL;
+     conf->no_proxy = NULL;
+     conf->proxy_user = NULL;
+     conf->proxy_passwd = NULL;
+
+     pkg_hash_init("pkg-hash", &conf->pkg_hash, OPKG_CONF_DEFAULT_HASH_LEN);
+     hash_table_init("file-hash", &conf->file_hash, OPKG_CONF_DEFAULT_HASH_LEN);
+     hash_table_init("obs-file-hash", &conf->obs_file_hash, OPKG_CONF_DEFAULT_HASH_LEN);
+     lists_dir=(char *)malloc(1);
+     lists_dir[0]='\0';
+     if (args->conf_file) {
+	  struct stat stat_buf;
+	  err = stat(args->conf_file, &stat_buf);
+	  if (err == 0)
+	       if (opkg_conf_parse_file(conf, args->conf_file,
+				    &conf->pkg_src_list, &tmp_dest_nv_pair_list,&lists_dir)<0) {
+                   /* Memory leakage from opkg_conf_parse-file */
+                   return -1;
+               }
+                   
+     }
+
+     /* if (!lists_dir ){*/
+     if (strlen(lists_dir)<=1 ){
+        lists_dir = realloc(lists_dir,strlen(OPKG_CONF_LISTS_DIR)+2);
+        sprintf (lists_dir,"%s",OPKG_CONF_LISTS_DIR);
+     }
+
+     if (args->offline_root) {
+            char *tmp = malloc(strlen(lists_dir) + strlen(args->offline_root) + 1);
+            sprintf_alloc(&tmp, "%s/%s",args->offline_root,lists_dir);
+            free(lists_dir);
+            lists_dir = tmp;
+     }
+
+     pending_dir = malloc(strlen(lists_dir)+strlen("/pending")+5);
+     snprintf(pending_dir,strlen(lists_dir)+strlen("/pending") ,"%s%s",lists_dir,"/pending");
+
+     conf->lists_dir = strdup(lists_dir);
+     conf->pending_dir = strdup(pending_dir);
+
+     if (args->offline_root) 
+	  sprintf_alloc(&etc_opkg_conf_pattern, "%s/etc/opkg/*.conf", args->offline_root);
+     memset(&globbuf, 0, sizeof(globbuf));
+     err = glob(etc_opkg_conf_pattern, 0, NULL, &globbuf);
+     if (!err) {
+	  int i;
+	  for (i = 0; i < globbuf.gl_pathc; i++) {
+	       if (globbuf.gl_pathv[i]) 
+		    if ( opkg_conf_parse_file(conf, globbuf.gl_pathv[i], 
+				         &conf->pkg_src_list, &tmp_dest_nv_pair_list,&lists_dir)<0) {
+                        /* Memory leakage from opkg_conf_parse-file */
+                        return -1;
+	            }
+	  }
+     }
+     globfree(&globbuf);
+
+     /* if no architectures were defined, then default all, noarch, and host architecture */
+     if (nv_pair_list_empty(&conf->arch_list)) {
+	  nv_pair_list_append(&conf->arch_list, "all", "1");
+	  nv_pair_list_append(&conf->arch_list, "noarch", "1");
+	  nv_pair_list_append(&conf->arch_list, HOST_CPU_STR, "10");
+     }
+
+     /* Even if there is no conf file, we'll need at least one dest. */
+     if (tmp_dest_nv_pair_list.head == NULL) {
+	  nv_pair_list_append(&tmp_dest_nv_pair_list,
+			      OPKG_CONF_DEFAULT_DEST_NAME,
+			      OPKG_CONF_DEFAULT_DEST_ROOT_DIR);
+     }
+
+     /* After parsing the file, set options from command-line, (so that
+	command-line arguments take precedence) */
+     /* XXX: CLEANUP: The interaction between args.c and opkg_conf.c
+	really needs to be cleaned up. There is so much duplication
+	right now it is ridiculous. Maybe opkg_conf_t should just save
+	a pointer to args_t (which could then not be freed), rather
+	than duplicating every field here? */
+     if (args->force_depends) {
+	  conf->force_depends = 1;
+     }
+     if (args->force_defaults) {
+	  conf->force_defaults = 1;
+     }
+     if (args->force_overwrite) {
+	  conf->force_overwrite = 1;
+     }
+     if (args->force_downgrade) {
+	  conf->force_downgrade = 1;
+     }
+     if (args->force_reinstall) {
+	  conf->force_reinstall = 1;
+     }
+     if (args->force_removal_of_dependent_packages) {
+	  conf->force_removal_of_dependent_packages = 1;
+     }
+     if (args->force_removal_of_essential_packages) {
+	  conf->force_removal_of_essential_packages = 1;
+     }
+     if (args->nodeps) {
+	  conf->nodeps = 1;
+     }
+     if (args->noaction) {
+	  conf->noaction = 1;
+     }
+     if (args->query_all) {
+	  conf->query_all = 1;
+     }
+     if (args->verbose_wget) {
+	  conf->verbose_wget = 1;
+     }
+     if (args->multiple_providers) {
+	  conf->multiple_providers = 1;
+     }
+     if (args->verbosity != conf->verbosity) {
+	  conf->verbosity = args->verbosity;
+     } 
+
+     opkg_conf_override_string(&conf->offline_root, 
+			       args->offline_root);
+     opkg_conf_override_string(&conf->offline_root_pre_script_cmd, 
+			       args->offline_root_pre_script_cmd);
+     opkg_conf_override_string(&conf->offline_root_post_script_cmd, 
+			       args->offline_root_post_script_cmd);
+
+/* Pigi: added a flag to disable the checking of structures if the command does not need to 
+         read anything from there.
+*/
+     if ( !(args->nocheckfordirorfile)){
+        /* need to run load the source list before dest list -Jamey */
+        if ( !(args->noreadfeedsfile))
+           set_and_load_pkg_src_list(conf, &conf->pkg_src_list);
+   
+        /* Now that we have resolved conf->offline_root, we can commit to
+	   the directory names for the dests and load in all the package
+	   lists. */
+        set_and_load_pkg_dest_list(conf, &tmp_dest_nv_pair_list,lists_dir);
+   
+        if (args->dest) {
+	     err = opkg_conf_set_default_dest(conf, args->dest);
+	     if (err) {
+	          return err;
+	     }
+        }
+     }
+     nv_pair_list_deinit(&tmp_dest_nv_pair_list);
+     free(lists_dir);
+     free(pending_dir);
+
+     return 0;
+}
+
+void opkg_conf_deinit(opkg_conf_t *conf)
+{
+#ifdef OPKG_DEBUG_NO_TMP_CLEANUP
+#error
+     fprintf(stderr, "%s: Not cleaning up %s since opkg compiled "
+	     "with OPKG_DEBUG_NO_TMP_CLEANUP\n",
+	     __FUNCTION__, conf->tmp_dir);
+#else
+     int err;
+
+     err = rmdir(conf->tmp_dir);
+     if (err) {
+	  if (errno == ENOTEMPTY) {
+	       char *cmd;
+	       sprintf_alloc(&cmd, "rm -fr %s\n", conf->tmp_dir);
+	       err = xsystem(cmd);
+	       free(cmd);
+	  }
+	  if (err)
+	       fprintf(stderr, "WARNING: Unable to remove temporary directory: %s: %s\n", conf->tmp_dir, strerror(errno));
+     }
+#endif /* OPKG_DEBUG_NO_TMP_CLEANUP */
+
+     free(conf->tmp_dir); /*XXX*/
+
+     pkg_src_list_deinit(&conf->pkg_src_list);
+     pkg_dest_list_deinit(&conf->pkg_dest_list);
+     nv_pair_list_deinit(&conf->arch_list);
+     if (&conf->pkg_hash)
+	            pkg_hash_deinit(&conf->pkg_hash);
+     if (&conf->file_hash)
+	            hash_table_deinit(&conf->file_hash);
+     if (&conf->obs_file_hash)
+	            hash_table_deinit(&conf->obs_file_hash);
+
+     opkg_conf_free_string(&conf->offline_root);
+     opkg_conf_free_string(&conf->offline_root_pre_script_cmd);
+     opkg_conf_free_string(&conf->offline_root_post_script_cmd);
+
+     if (conf->verbosity > 1) { 
+	  int i;
+	  hash_table_t *hashes[] = {
+	       &conf->pkg_hash,
+	       &conf->file_hash,
+	       &conf->obs_file_hash };
+	  for (i = 0; i < 3; i++) {
+	       hash_table_t *hash = hashes[i];
+	       int c = 0;
+	       int n_conflicts = 0;
+	       int j;
+	       for (j = 0; j < hash->n_entries; j++) {
+		    int len = 0;
+		    hash_entry_t *e = &hash->entries[j];
+		    if (e->next)
+			 n_conflicts++;
+		    while (e && e->key) {
+			 len++;
+			 e = e->next;
+		    }
+		    if (len > c) 
+			 c = len;
+	       }
+	       opkg_message(conf, OPKG_DEBUG, "hash_table[%s] n_buckets=%d n_elements=%d max_conflicts=%d n_conflicts=%d\n", 
+			    hash->name, hash->n_entries, hash->n_elements, c, n_conflicts);
+	       hash_table_deinit(hash);
+	  }
+     }
+}
+
+static int opkg_conf_set_default_dest(opkg_conf_t *conf,
+				      const char *default_dest_name)
+{
+     pkg_dest_list_elt_t *iter;
+     pkg_dest_t *dest;
+
+     for (iter = conf->pkg_dest_list.head; iter; iter = iter->next) {
+	  dest = iter->data;
+	  if (strcmp(dest->name, default_dest_name) == 0) {
+	       conf->default_dest = dest;
+	       conf->restrict_to_default_dest = 1;
+	       return 0;
+	  }
+     }
+
+     fprintf(stderr, "ERROR: Unknown dest name: `%s'\n", default_dest_name);
+
+     return 1;
+}
+
+static int set_and_load_pkg_src_list(opkg_conf_t *conf, pkg_src_list_t *pkg_src_list)
+{
+     pkg_src_list_elt_t *iter;
+     pkg_src_t *src;
+     char *list_file;
+
+     for (iter = pkg_src_list->head; iter; iter = iter->next) {
+          src = iter->data;
+	  if (src == NULL) {
+	       continue;
+	  }
+
+	  sprintf_alloc(&list_file, "%s/%s", 
+			  conf->restrict_to_default_dest ? conf->default_dest->lists_dir : conf->lists_dir, 
+			  src->name);
+
+	  if (file_exists(list_file)) {
+	       pkg_hash_add_from_file(conf, list_file, src, NULL, 0);
+	  }
+	  free(list_file);
+     }
+
+     return 0;
+}
+
+static int set_and_load_pkg_dest_list(opkg_conf_t *conf, nv_pair_list_t *nv_pair_list, char *lists_dir )
+{
+     nv_pair_list_elt_t *iter;
+     nv_pair_t *nv_pair;
+     pkg_dest_t *dest;
+     char *root_dir;
+
+     for (iter = nv_pair_list->head; iter; iter = iter->next) {
+	  nv_pair = iter->data;
+
+	  if (conf->offline_root) {
+	       sprintf_alloc(&root_dir, "%s%s", conf->offline_root, nv_pair->value);
+	  } else {
+	       root_dir = strdup(nv_pair->value);
+	  }
+	  dest = pkg_dest_list_append(&conf->pkg_dest_list, nv_pair->name, root_dir, lists_dir);
+	  free(root_dir);
+	  if (dest == NULL) {
+	       continue;
+	  }
+	  if (conf->default_dest == NULL) {
+	       conf->default_dest = dest;
+	  }
+	  if (file_exists(dest->status_file_name)) {
+	       pkg_hash_add_from_file(conf, dest->status_file_name,
+				      NULL, dest, 1);
+	  }
+     }
+
+     return 0;
+}
+
+static int opkg_conf_parse_file(opkg_conf_t *conf, const char *filename,
+				pkg_src_list_t *pkg_src_list,
+				nv_pair_list_t *tmp_dest_nv_pair_list,
+				char **lists_dir)
+{
+     int err;
+     opkg_option_t * options;
+     FILE *file = fopen(filename, "r");
+     regex_t valid_line_re, comment_re;
+#define regmatch_size 12
+     regmatch_t regmatch[regmatch_size];
+
+     if (opkg_init_options_array(conf, &options)<0)
+        return ENOMEM;
+
+     if (file == NULL) {
+	  fprintf(stderr, "%s: failed to open %s: %s\n",
+		  __FUNCTION__, filename, strerror(errno));
+	  free(options);
+	  return errno;
+     }
+     opkg_message(conf, OPKG_NOTICE, "loading conf file %s\n", filename);
+
+     err = xregcomp(&comment_re, 
+		    "^[[:space:]]*(#.*|[[:space:]]*)$",
+		    REG_EXTENDED);
+     if (err) {
+	  free(options);
+	  return err;
+     }
+     err = xregcomp(&valid_line_re, "^[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))([[:space:]]+([^[:space:]]+))?[[:space:]]*$", REG_EXTENDED);
+     if (err) {
+	  free(options);
+	  return err;
+     }
+
+     while(1) {
+	  int line_num = 0;
+	  char *line;
+	  char *type, *name, *value, *extra;
+
+	  line = file_read_line_alloc(file);
+	  line_num++;
+	  if (line == NULL) {
+	       break;
+	  }
+
+	  str_chomp(line);
+
+	  if (regexec(&comment_re, line, 0, 0, 0) == 0) {
+	       goto NEXT_LINE;
+	  }
+
+	  if (regexec(&valid_line_re, line, regmatch_size, regmatch, 0) == REG_NOMATCH) {
+	       str_chomp(line);
+	       fprintf(stderr, "%s:%d: Ignoring invalid line: `%s'\n",
+		       filename, line_num, line);
+	       goto NEXT_LINE;
+	  }
+
+	  /* This has to be so ugly to deal with optional quotation marks */
+	  if (regmatch[2].rm_so > 0) {
+	       type = strndup(line + regmatch[2].rm_so,
+			      regmatch[2].rm_eo - regmatch[2].rm_so);
+	  } else {
+	       type = strndup(line + regmatch[3].rm_so,
+			      regmatch[3].rm_eo - regmatch[3].rm_so);
+	  }
+	  if (regmatch[5].rm_so > 0) {
+	       name = strndup(line + regmatch[5].rm_so,
+			      regmatch[5].rm_eo - regmatch[5].rm_so);
+	  } else {
+	       name = strndup(line + regmatch[6].rm_so,
+			      regmatch[6].rm_eo - regmatch[6].rm_so);
+	  }
+	  if (regmatch[8].rm_so > 0) {
+	       value = strndup(line + regmatch[8].rm_so,
+			       regmatch[8].rm_eo - regmatch[8].rm_so);
+	  } else {
+	       value = strndup(line + regmatch[9].rm_so,
+			       regmatch[9].rm_eo - regmatch[9].rm_so);
+	  }
+	  extra = NULL;
+	  if (regmatch[11].rm_so > 0) {
+	       extra = strndup (line + regmatch[11].rm_so,
+				regmatch[11].rm_eo - regmatch[11].rm_so);
+	  }
+
+	  /* We use the tmp_dest_nv_pair_list below instead of
+	     conf->pkg_dest_list because we might encounter an
+	     offline_root option later and that would invalidate the
+	     directories we would have computed in
+	     pkg_dest_list_init. (We do a similar thing with
+	     tmp_src_nv_pair_list for sake of symmetry.) */
+	  if (strcmp(type, "option") == 0) {
+	       opkg_conf_set_option(options, name, value);
+	  } else if (strcmp(type, "src") == 0) {
+	       if (!nv_pair_list_find(pkg_src_list, name)) {
+		    pkg_src_list_append (pkg_src_list, name, value, extra, 0);
+	       } else {
+		    opkg_message(conf, OPKG_ERROR, "ERROR: duplicate src declaration.  Skipping:\n\t src %s %s\n",
+				 name, value);
+	       }
+	  } else if (strcmp(type, "src/gz") == 0) {
+	       if (!nv_pair_list_find(pkg_src_list, name)) {
+		    pkg_src_list_append (pkg_src_list, name, value, extra, 1);
+	       } else {
+		    opkg_message(conf, OPKG_ERROR, "ERROR: duplicate src declaration.  Skipping:\n\t src %s %s\n",
+				 name, value);
+	       }
+	  } else if (strcmp(type, "dest") == 0) {
+	       nv_pair_list_append(tmp_dest_nv_pair_list, name, value);
+	  } else if (strcmp(type, "lists_dir") == 0) {
+	       *lists_dir = realloc(*lists_dir,strlen(value)+1);
+               if (*lists_dir == NULL) {
+		    opkg_message(conf, OPKG_ERROR, "ERROR: Not enough memory\n");
+	            free(options);
+	            return EINVAL;
+               }
+               sprintf (*lists_dir,"%s",value);
+	  } else if (strcmp(type, "arch") == 0) {
+	       opkg_message(conf, OPKG_INFO, "supported arch %s priority (%s)\n", name, value);
+	       if (!value) {
+		    opkg_message(conf, OPKG_NOTICE, "defaulting architecture %s priority to 10\n", name);
+		    value = strdup("10");
+	       }
+	       nv_pair_list_append(&conf->arch_list, strdup(name), strdup(value));
+	  } else {
+	       fprintf(stderr, "WARNING: Ignoring unknown configuration "
+		       "parameter: %s %s %s\n", type, name, value);
+	       free(options);
+	       return EINVAL;
+	  }
+
+	  free(type);
+	  free(name);
+	  free(value);
+	  if (extra)
+	       free (extra);
+
+     NEXT_LINE:
+	  free(line);
+     }
+
+     free(options);
+     regfree(&comment_re);
+     regfree(&valid_line_re);
+     fclose(file);
+
+     return 0;
+}
+
+static int opkg_conf_set_option(const opkg_option_t *options,
+				const char *name, const char *value)
+{
+     int i = 0;
+     while (options[i].name) {
+	  if (strcmp(options[i].name, name) == 0) {
+	       switch (options[i].type) {
+	       case OPKG_OPT_TYPE_BOOL:
+		    *((int *)options[i].value) = 1;
+		    return 0;
+	       case OPKG_OPT_TYPE_INT:
+		    if (value) {
+			 *((int *)options[i].value) = atoi(value);
+			 return 0;
+		    } else {
+			 printf("%s: Option %s need an argument\n",
+				__FUNCTION__, name);
+			 return EINVAL;
+		    }		    
+	       case OPKG_OPT_TYPE_STRING:
+		    if (value) {
+			 *((char **)options[i].value) = strdup(value);
+			 return 0;
+		    } else {
+			 printf("%s: Option %s need an argument\n",
+				__FUNCTION__, name);
+			 return EINVAL;
+		    }
+	       }
+	  }
+	  i++;
+     }
+    
+     fprintf(stderr, "%s: Unrecognized option: %s=%s\n",
+	     __FUNCTION__, name, value);
+     return EINVAL;
+}
+
+int opkg_conf_write_status_files(opkg_conf_t *conf)
+{
+     pkg_dest_list_elt_t *iter;
+     pkg_dest_t *dest;
+     pkg_vec_t *all;
+     pkg_t *pkg;
+     register int i;
+     int err;
+
+     if (conf->noaction)
+	  return 0;
+     for (iter = conf->pkg_dest_list.head; iter; iter = iter->next) {
+	  dest = iter->data;
+	  dest->status_file = fopen(dest->status_file_tmp_name, "w");
+	  if (dest->status_file == NULL) {
+	       fprintf(stderr, "%s: Can't open status file: %s for writing: %s\n",
+		       __FUNCTION__, dest->status_file_name, strerror(errno));
+	  }
+     }
+
+     all = pkg_vec_alloc();
+     pkg_hash_fetch_available(&conf->pkg_hash, all);
+
+     for(i = 0; i < all->len; i++) {
+	  pkg = all->pkgs[i];
+	  /* We don't need most uninstalled packages in the status file */
+	  if (pkg->state_status == SS_NOT_INSTALLED
+	      && (pkg->state_want == SW_UNKNOWN
+		  || pkg->state_want == SW_DEINSTALL
+		  || pkg->state_want == SW_PURGE)) {
+	       continue;
+	  }
+	  if (!pkg) {
+	    fprintf(stderr, "Null package\n");
+	  }
+	  if (pkg->dest == NULL) {
+	       fprintf(stderr, "%s: ERROR: Can't write status for "
+		       "package %s since it has a NULL dest\n",
+		       __FUNCTION__, pkg->name);
+	       continue;
+	  }
+	  if (pkg->dest->status_file) {
+	       pkg_print_status(pkg, pkg->dest->status_file);
+	  }
+     }
+
+     pkg_vec_free(all);
+
+     for (iter = conf->pkg_dest_list.head; iter; iter = iter->next) {
+	  dest = iter->data;
+	  if (dest->status_file) {
+	       err = ferror(dest->status_file);
+	       fclose(dest->status_file);
+	       dest->status_file = NULL;
+	       if (!err) {
+		    file_move(dest->status_file_tmp_name, dest->status_file_name);
+	       } else {
+		    fprintf(stderr, "%s: ERROR: An error has occurred writing %s, "
+			    "retaining old %s\n", __FUNCTION__, 
+			    dest->status_file_tmp_name, dest->status_file_name);
+	       }
+	  }
+     }
+
+     return 0;
+}
+
+
+char *root_filename_alloc(opkg_conf_t *conf, char *filename)
+{
+     char *root_filename;
+     sprintf_alloc(&root_filename, "%s%s", (conf->offline_root ? conf->offline_root : ""), filename);
+     return root_filename;
+}
diff --git a/libopkg/opkg_conf.h b/libopkg/opkg_conf.h
new file mode 100644
index 0000000..4b50900
--- /dev/null
+++ b/libopkg/opkg_conf.h
@@ -0,0 +1,107 @@
+/* opkg_conf.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_CONF_H
+#define OPKG_CONF_H
+
+typedef struct opkg_conf opkg_conf_t;
+
+#include "hash_table.h"
+#include "opkg.h"
+#include "args.h"
+#include "pkg.h"
+#include "pkg_hash.h"
+#include "pkg_src_list.h"
+#include "pkg_dest_list.h"
+#include "nv_pair_list.h"
+
+#define OPKG_CONF_DEFAULT_TMP_DIR_BASE "/tmp"
+#define OPKG_CONF_TMP_DIR_SUFFIX "opkg-XXXXXX"
+#define OPKG_CONF_LISTS_DIR  OPKG_STATE_DIR_PREFIX "/lists"
+#define OPKG_CONF_PENDING_DIR OPKG_STATE_DIR_PREFIX "/pending"
+
+/* In case the config file defines no dest */
+#define OPKG_CONF_DEFAULT_DEST_NAME "root"
+#define OPKG_CONF_DEFAULT_DEST_ROOT_DIR "/"
+
+#define OPKG_CONF_DEFAULT_HASH_LEN 1024
+
+struct opkg_conf
+{
+     pkg_src_list_t pkg_src_list;
+     pkg_dest_list_t pkg_dest_list;
+     nv_pair_list_t arch_list;
+
+     int restrict_to_default_dest;
+     pkg_dest_t *default_dest;
+
+     char *tmp_dir;
+     const char *lists_dir;
+     const char *pending_dir;
+
+     /* options */
+     int force_depends;
+     int force_defaults;
+     int force_overwrite;
+     int force_downgrade;
+     int force_reinstall;
+     int force_space;
+     int force_removal_of_dependent_packages;
+     int force_removal_of_essential_packages;
+     int nodeps; /* do not follow dependences */
+     int verbose_wget;
+     int multiple_providers;
+     char *offline_root;
+     char *offline_root_pre_script_cmd;
+     char *offline_root_post_script_cmd;
+     int query_all;
+     int verbosity;
+     int noaction;
+
+     /* proxy options */
+     char *http_proxy;
+     char *ftp_proxy;
+     char *no_proxy;
+     char *proxy_user;
+     char *proxy_passwd;
+
+     hash_table_t pkg_hash;
+     hash_table_t file_hash;
+     hash_table_t obs_file_hash;
+};
+
+enum opkg_option_type {
+     OPKG_OPT_TYPE_BOOL,
+     OPKG_OPT_TYPE_INT,
+     OPKG_OPT_TYPE_STRING
+};
+typedef enum opkg_option_type opkg_option_type_t;
+
+typedef struct opkg_option opkg_option_t;
+struct opkg_option {
+     const char *name;
+     const opkg_option_type_t type;
+     const void *value;
+};
+
+int opkg_conf_init(opkg_conf_t *conf, const args_t *args);
+void opkg_conf_deinit(opkg_conf_t *conf);
+
+int opkg_conf_write_status_files(opkg_conf_t *conf);
+char *root_filename_alloc(opkg_conf_t *conf, char *filename);
+
+#endif
diff --git a/libopkg/opkg_configure.c b/libopkg/opkg_configure.c
new file mode 100644
index 0000000..8309e40
--- /dev/null
+++ b/libopkg/opkg_configure.c
@@ -0,0 +1,48 @@
+/* opkg_configure.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "opkg_configure.h"
+#include "opkg_state.h"
+
+int opkg_configure(opkg_conf_t *conf, pkg_t *pkg)
+{
+    int err;
+
+    /* DPKG_INCOMPATIBILITY:
+       dpkg actually does some conffile handling here, rather than at the
+       end of opkg_install(). Do we care? */
+    /* DPKG_INCOMPATIBILITY:
+       dpkg actually includes a version number to this script call */
+
+    char *pkgid;
+    sprintf_alloc (&pkgid, "%s;%s;%s;", pkg->name, pkg->version, pkg->architecture);
+    opkg_set_current_state (OPKG_STATE_CONFIGURING_PKG, pkgid);
+    free (pkgid);
+
+    err = pkg_run_script(conf, pkg, "postinst", "configure");
+    if (err) {
+	printf("ERROR: %s.postinst returned %d\n", pkg->name, err);
+	return err;
+    }
+
+    opkg_state_changed++;
+    opkg_set_current_state (OPKG_STATE_NONE, NULL);
+    return 0;
+}
+
diff --git a/libopkg/opkg_configure.h b/libopkg/opkg_configure.h
new file mode 100644
index 0000000..f56f0e4
--- /dev/null
+++ b/libopkg/opkg_configure.h
@@ -0,0 +1,25 @@
+/* opkg_configure.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_CONFIGURE_H
+#define OPKG_CONFIGURE_H
+
+#include "opkg_conf.h"
+
+int opkg_configure(opkg_conf_t *opkg_conf, pkg_t *pkg);
+
+#endif
diff --git a/libopkg/opkg_download.c b/libopkg/opkg_download.c
new file mode 100644
index 0000000..bbd6efe
--- /dev/null
+++ b/libopkg/opkg_download.c
@@ -0,0 +1,346 @@
+/* vi: set noexpandtab sw=4 sts=4: */
+/* opkg_download.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+   Copyright (C) 2008 OpenMoko Inc
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+#include "config.h"
+#include <curl/curl.h>
+#ifdef HAVE_GPGME
+#include <gpgme.h>
+#endif
+
+#include "opkg.h"
+#include "opkg_download.h"
+#include "opkg_message.h"
+#include "opkg_state.h"
+
+#include "sprintf_alloc.h"
+#include "xsystem.h"
+#include "file_util.h"
+#include "str_util.h"
+
+#ifdef OPKG_LIB
+#include "libopkg.h"
+opkg_download_progress_callback opkg_cb_download_progress = NULL;
+#endif
+
+int
+curl_progress_func (char* url,
+		    double t, /* dltotal */
+		    double d, /* dlnow */
+		    double ultotal,
+		    double ulnow)
+{
+    int i;
+    int p = (t) ? d*100/t : 0;
+
+#ifdef OPKG_LIB
+    if (opkg_cb_download_progress)
+    {
+	static int prev = -1;
+
+	/* don't report the same percentage multiple times
+	 * (this can occur due to rounding) */
+	if (prev == p)
+	    return 0;
+	prev = p;
+
+	opkg_cb_download_progress (p, url);
+	return 0;
+    }
+#endif
+
+    /* skip progress bar if we haven't done started yet
+     * this prevents drawing the progress bar if we receive an error such as
+     * file not found */
+    if (t == 0)
+	return 0;
+
+    printf ("\r%3d%% |", p);
+    for (i = 1; i < 73; i++)
+    {
+	if (i <= p * 0.73)
+	    printf ("=");
+	else
+	    printf ("-");
+    }
+    printf ("|");
+    fflush(stdout);
+    return 0;
+}
+
+int opkg_download(opkg_conf_t *conf, const char *src, const char *dest_file_name)
+{
+    int err = 0;
+
+    char *src_basec = strdup(src);
+    char *src_base = basename(src_basec);
+    char *tmp_file_location;
+
+    opkg_message(conf,OPKG_NOTICE,"Downloading %s\n", src);
+	
+    fflush(stdout);
+    
+    if (str_starts_with(src, "file:")) {
+	int ret;
+	const char *file_src = src + 5;
+	opkg_message(conf,OPKG_INFO,"Copying %s to %s...", file_src, dest_file_name);
+	ret = file_copy(src + 5, dest_file_name);
+	opkg_message(conf,OPKG_INFO,"Done\n");
+	return ret;
+    }
+
+    sprintf_alloc(&tmp_file_location, "%s/%s", conf->tmp_dir, src_base);
+    err = unlink(tmp_file_location);
+    if (err && errno != ENOENT) {
+	opkg_message(conf,OPKG_ERROR, "%s: ERROR: failed to unlink %s: %s\n",
+		__FUNCTION__, tmp_file_location, strerror(errno));
+	free(tmp_file_location);
+	return errno;
+    }
+
+    if (conf->http_proxy) {
+	opkg_message(conf,OPKG_DEBUG,"Setting environment variable: http_proxy = %s\n", conf->http_proxy);
+	setenv("http_proxy", conf->http_proxy, 1);
+    }
+    if (conf->ftp_proxy) {
+	opkg_message(conf,OPKG_DEBUG,"Setting environment variable: ftp_proxy = %s\n", conf->ftp_proxy);
+	setenv("ftp_proxy", conf->ftp_proxy, 1);
+    }
+    if (conf->no_proxy) {
+	opkg_message(conf,OPKG_DEBUG,"Setting environment variable: no_proxy = %s\n", conf->no_proxy);
+	setenv("no_proxy", conf->no_proxy, 1);
+    }
+
+    /* XXX: BUG rewrite to use execvp or else busybox's internal wget -Jamey 7/23/2002 */ 
+#if 0
+    sprintf_alloc(&cmd, "wget --passive-ftp %s %s%s %s%s %s -P %s %s",
+		  (conf->http_proxy || conf->ftp_proxy) ? "--proxy=on" : "",
+		  conf->proxy_user ? "--proxy-user=" : "",
+		  conf->proxy_user ? conf->proxy_user : "",
+		  conf->proxy_passwd ? "--proxy-passwd=" : "",
+		  conf->proxy_passwd ? conf->proxy_passwd : "",
+		  conf->verbose_wget ? "" : "-q",
+		  conf->tmp_dir,
+		  src);
+    err = xsystem(cmd);
+    if (err) {
+	if (err != -1) {
+	    opkg_message(conf,OPKG_ERROR, "%s: ERROR: Command failed with return value %d: `%s'\n",
+		    __FUNCTION__, err, cmd);
+	} 
+	unlink(tmp_file_location);
+	free(tmp_file_location);
+	free(src_basec);
+	free(cmd);
+	return EINVAL;
+    }
+    free(cmd);
+#endif
+    CURL *curl;
+    CURLcode res;
+    FILE * file = fopen (tmp_file_location, "w");
+
+    curl = curl_easy_init ();
+    if (curl)
+    {
+	curl_easy_setopt (curl, CURLOPT_URL, src);
+	curl_easy_setopt (curl, CURLOPT_WRITEDATA, file);
+	curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 0);
+	curl_easy_setopt (curl, CURLOPT_PROGRESSDATA, src);
+	curl_easy_setopt (curl, CURLOPT_PROGRESSFUNCTION, curl_progress_func);
+	curl_easy_setopt (curl, CURLOPT_FAILONERROR, 1);
+	if (conf->http_proxy || conf->ftp_proxy)
+	{
+	    char *userpwd;
+	    sprintf_alloc (&userpwd, "%s:%s", conf->proxy_user,
+		    conf->proxy_passwd);
+	    curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
+	    free (userpwd);
+	}
+	res = curl_easy_perform (curl);
+	curl_easy_cleanup (curl);
+	fclose (file);
+	if (res)
+	{
+	    long error_code;
+	    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &error_code);
+	    opkg_message(conf, OPKG_ERROR, "Failed to download %s, error %d\n", src, error_code);
+	    return res;
+	}
+
+    }
+    else
+	return -1;
+
+    printf ("\n");
+
+    err = file_move(tmp_file_location, dest_file_name);
+
+    free(tmp_file_location);
+    free(src_basec);
+
+    if (err) {
+	return err;
+    }
+
+    return 0;
+}
+
+int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir)
+{
+    int err;
+    char *url;
+    char *pkgid;
+
+    if (pkg->src == NULL) {
+	opkg_message(conf,OPKG_ERROR, "ERROR: Package %s (parent %s) is not available from any configured src.\n",
+		pkg->name, pkg->parent->name);
+	return -1;
+    }
+
+    sprintf_alloc (&pkgid, "%s;%s;%s;", pkg->name, pkg->version, pkg->architecture);
+    opkg_set_current_state (OPKG_STATE_DOWNLOADING_PKG, pkgid);
+    free (pkgid);
+
+    sprintf_alloc(&url, "%s/%s", pkg->src->value, pkg->filename);
+
+    /* XXX: BUG: The pkg->filename might be something like
+       "../../foo.ipk". While this is correct, and exactly what we
+       want to use to construct url above, here we actually need to
+       use just the filename part, without any directory. */
+    sprintf_alloc(&pkg->local_filename, "%s/%s", dir, pkg->filename);
+
+    err = opkg_download(conf, url, pkg->local_filename);
+    free(url);
+
+    opkg_set_current_state (OPKG_STATE_NONE, NULL);
+    return err;
+}
+
+/*
+ * Downloads file from url, installs in package database, return package name. 
+ */
+int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep)
+{
+     int err = 0;
+     pkg_t *pkg;
+     pkg = pkg_new();
+     if (pkg == NULL)
+	  return ENOMEM;
+
+     if (str_starts_with(url, "http://")
+	 || str_starts_with(url, "ftp://")) {
+	  char *tmp_file;
+	  char *file_basec = strdup(url);
+	  char *file_base = basename(file_basec);
+
+	  sprintf_alloc(&tmp_file, "%s/%s", conf->tmp_dir, file_base);
+	  err = opkg_download(conf, url, tmp_file);
+	  if (err)
+	       return err;
+
+	  err = pkg_init_from_file(pkg, tmp_file);
+	  if (err)
+	       return err;
+	  pkg->local_filename = strdup(tmp_file);
+
+	  free(tmp_file);
+	  free(file_basec);
+
+     } else if (strcmp(&url[strlen(url) - 4], OPKG_PKG_EXTENSION) == 0
+		|| strcmp(&url[strlen(url) - 4], DPKG_PKG_EXTENSION) == 0) {
+
+	  err = pkg_init_from_file(pkg, url);
+	  if (err)
+	       return err;
+	  pkg->local_filename = strdup(url);
+	  opkg_message(conf, OPKG_DEBUG2, "Package %s provided by hand (%s).\n", pkg->name,pkg->local_filename);
+          pkg->provided_by_hand = 1;
+
+     } else {
+       pkg_deinit(pkg);
+       free(pkg);
+       return 0;
+     }
+
+     if (!pkg->architecture) {
+	  opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
+	  return -EINVAL;
+     }
+
+     pkg->dest = conf->default_dest;
+     pkg->state_want = SW_INSTALL;
+     pkg->state_flag |= SF_PREFER;
+     pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);  
+     if ( pkg == NULL ){
+        fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
+        return 0;
+     }
+     if (namep) {
+	  *namep = strdup(pkg->name);
+     }
+     return 0;
+}
+
+int
+opkg_verify_file (char *text_file, char *sig_file)
+{
+#ifdef HAVE_GPGME
+    int status = -1;
+    gpgme_ctx_t ctx;
+    gpgme_data_t sig, text;
+    gpgme_error_t err = -1;
+    gpgme_verify_result_t result;
+    gpgme_signature_t s;
+    
+    err = gpgme_new (&ctx);
+
+    if (err)
+	return -1;
+
+    err = gpgme_data_new_from_file (&sig, sig_file, 1); 
+    if (err)
+	return -1;
+
+    err = gpgme_data_new_from_file (&text, text_file, 1); 
+    if (err)
+	return -1;
+
+    err = gpgme_op_verify (ctx, sig, text, NULL);
+
+    result = gpgme_op_verify_result (ctx);
+
+    /* see if any of the signitures matched */
+    s = result->signatures;
+    while (s)
+    {
+	status = gpg_err_code (s->status);
+	if (status == GPG_ERR_NO_ERROR)
+	    break;
+	s = s->next;
+    }
+
+    gpgme_data_release (sig);
+    gpgme_data_release (text);
+    gpgme_release (ctx);
+
+    return status;
+#else
+    printf ("Signature check skipped because GPG support was not enabled in this build\n");
+    return 0;
+#endif
+}
diff --git a/libopkg/opkg_download.h b/libopkg/opkg_download.h
new file mode 100644
index 0000000..d3f419d
--- /dev/null
+++ b/libopkg/opkg_download.h
@@ -0,0 +1,31 @@
+/* opkg_download.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_DOWNLOAD_H
+#define OPKG_DOWNLOAD_H
+
+#include "opkg_conf.h"
+
+int opkg_download(opkg_conf_t *conf, const char *src, const char *dest_file_name);
+int opkg_download_pkg(opkg_conf_t *conf, pkg_t *pkg, const char *dir);
+/*
+ * Downloads file from url, installs in package database, return package name. 
+ */
+int opkg_prepare_url_for_install(opkg_conf_t *conf, const char *url, char **namep);
+
+int opkg_verify_file (char *text_file, char *sig_file);
+#endif
diff --git a/libopkg/opkg_extract_test.c b/libopkg/opkg_extract_test.c
new file mode 100644
index 0000000..83e23e3
--- /dev/null
+++ b/libopkg/opkg_extract_test.c
@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "libbb/libbb.h"
+
+/*
+ * build thus: 
+
+ * gcc -o opkg_extract_test opkg_extract_test.c -I./busybox-0.60.2/libbb -L./busybox-0.60.2 -lbb
+ *
+ */
+const char * applet_name;
+
+int main(int argc, char * argv[])
+{
+  /*
+   * see libbb.h and let your imagination run wild
+   * or, set the last item below to extract_one_to_buffer, and you get the control file in 
+   * "returned"
+   * or, set the last one to extract_all_to_fs, and, well, guess what happens
+   */
+
+    /* enum extract_functions_e dowhat = extract_control_tar_gz | extract_unconditional | extract_one_to_buffer; */
+    enum extract_functions_e dowhat = extract_control_tar_gz | extract_all_to_fs | extract_preserve_date;
+  char * returned;
+  char * filename;
+  
+  if(argc < 2){
+    fprintf(stderr, "syntax: %s <opkg file> [<file_to_extract>]\n", argv[0]);
+    exit(0);
+  }
+  
+  if (argc < 3){
+    filename=NULL;
+  } else {
+    filename = argv[2];
+  }
+
+  returned = deb_extract(argv[1], stdout, dowhat, NULL, filename);
+  
+  if(returned)
+    fprintf(stderr, "returned %s\n", returned);
+  else
+    fprintf(stderr, "extract returned nuthin'\n");
+
+  return 0;
+}
diff --git a/libopkg/opkg_hash_test.c b/libopkg/opkg_hash_test.c
new file mode 100644
index 0000000..934dac7
--- /dev/null
+++ b/libopkg/opkg_hash_test.c
@@ -0,0 +1,79 @@
+/* opkg_hash_test.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "hash_table.h"
+#include "opkg_utils.h"
+#include "pkg_hash.h"
+
+int main(int argc, char *argv[])
+{
+     opkg_conf_t conf;
+     hash_table_t *hash = &conf.pkg_hash;
+     pkg_vec_t * pkg_vec;
+
+    if (argc < 3) {
+	fprintf(stderr, "Usage: %s <pkgs_file1> <pkgs_file2> [pkg_name...]\n", argv[0]);
+	exit(1);
+    }
+    pkg_hash_init("test", hash, 1024);
+
+    pkg_hash_add_from_file(&conf, argv[1], NULL, NULL, 0);
+    pkg_hash_add_from_file(&conf, argv[2], NULL, NULL, 0);
+
+    if (argc < 4) {
+	pkg_print_info( pkg_hash_fetch_by_name_version(hash, "libc6", "2.2.3-2"), stdout);
+	/*	for(i = 0; i < pkg_vec->len; i++)
+		pkg_print(pkg_vec->pkgs[i], stdout);
+	*/
+    } else {
+	int i, j, k;
+	char **unresolved;
+
+	pkg_vec_t * dep_vec;
+	for (i = 3; i < argc; i++) {
+	    pkg_vec = pkg_vec_fetch_by_name(hash, argv[i]);
+	    if (pkg_vec == NULL) {
+		fprintf(stderr, "*** WARNING: Unknown package: %s\n\n", argv[i]);
+		continue;
+	    }
+
+	    for(j = 0; j < pkg_vec->len; j++){
+		pkg_print_info(pkg_vec->pkgs[j], stdout);
+		dep_vec = pkg_vec_alloc();
+		pkg_hash_fetch_unsatisfied_dependencies(&conf,
+							pkg_vec->pkgs[j],
+							dep_vec,
+							&unresolved);
+		if(dep_vec){
+		    fprintf(stderr, "and the unsatisfied dependencies are:\n");
+		    for(k = 0; k < dep_vec->len; k++){
+			fprintf(stderr, "%s version %s\n", dep_vec->pkgs[k]->name, dep_vec->pkgs[k]->version);
+		    }
+		}
+		
+		fputs("", stdout);
+		
+	    }
+ 	}
+    }
+
+    pkg_hash_deinit(hash);
+
+    return 0;
+}
diff --git a/libopkg/opkg_install.c b/libopkg/opkg_install.c
new file mode 100644
index 0000000..599ae4d
--- /dev/null
+++ b/libopkg/opkg_install.c
@@ -0,0 +1,1952 @@
+/* opkg_install.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+#include <dirent.h>
+#include <glob.h>
+#include <time.h>
+#include <signal.h>
+typedef void (*sighandler_t)(int);
+
+#include "pkg.h"
+#include "pkg_hash.h"
+#include "pkg_extract.h"
+
+#include "opkg_install.h"
+#include "opkg_configure.h"
+#include "opkg_download.h"
+#include "opkg_remove.h"
+
+#include "opkg_utils.h"
+#include "opkg_message.h"
+#include "opkg_state.h"
+
+#include "sprintf_alloc.h"
+#include "file_util.h"
+#include "str_util.h"
+#include "xsystem.h"
+#include "user.h"
+
+int satisfy_dependencies_for(opkg_conf_t *conf, pkg_t *pkg);
+static int verify_pkg_installable(opkg_conf_t *conf, pkg_t *pkg);
+static int unpack_pkg_control_files(opkg_conf_t *conf, pkg_t *pkg);
+
+static int prerm_upgrade_old_pkg(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int prerm_upgrade_old_pkg_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int prerm_deconfigure_conflictors(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *conflictors);
+static int prerm_deconfigure_conflictors_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *conflictors);
+static int preinst_configure(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int preinst_configure_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int check_data_file_clashes(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int check_data_file_clashes_change(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int check_data_file_clashes_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int backup_modified_conffiles(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int backup_modified_conffiles_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int postrm_upgrade_old_pkg(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int postrm_upgrade_old_pkg_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+
+static int remove_obsolesced_files(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int install_maintainer_scripts(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg);
+static int remove_disappeared(opkg_conf_t *conf, pkg_t *pkg);
+static int install_data_files(opkg_conf_t *conf, pkg_t *pkg);
+static int resolve_conffiles(opkg_conf_t *conf, pkg_t *pkg);
+
+static int cleanup_temporary_files(opkg_conf_t *conf, pkg_t *pkg);
+
+static int user_prefers_old_conffile(const char *file, const char *backup);
+
+static char *backup_filename_alloc(const char *file_name);
+static int backup_make_backup(opkg_conf_t *conf, const char *file_name);
+static int backup_exists_for(const char *file_name);
+static int backup_remove(const char *file_name);
+
+
+int opkg_install_from_file(opkg_conf_t *conf, const char *filename)
+{
+     int err, cmp;
+     pkg_t *pkg, *old;
+     char *old_version, *new_version;
+
+     pkg = pkg_new();
+     if (pkg == NULL) {
+	  return ENOMEM;
+     }
+
+     err = pkg_init_from_file(pkg, filename);
+     if (err) {
+	  return err;
+     }
+
+     if (!pkg->architecture) {
+	  opkg_message(conf, OPKG_ERROR, "Package %s has no Architecture defined.\n", pkg->name);
+	  return -EINVAL;
+     }
+
+     /* XXX: CLEANUP: hash_insert_pkg has a nasty side effect of possibly
+	freeing the pkg that we pass in. It might be nice to clean this up
+	if possible.  */
+     pkg = hash_insert_pkg(&conf->pkg_hash, pkg, 1,conf);
+     old = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg->name);
+
+     pkg->local_filename = strdup(filename);
+
+     if (old) {
+	  old_version = pkg_version_str_alloc(old);
+	  new_version = pkg_version_str_alloc(pkg);
+
+	  cmp = pkg_compare_versions(old, pkg);
+          if ( (conf->force_downgrade==1) && (cmp > 0) ){     /* We've been asked to allow downgrade  and version is precedent */
+             cmp = -1 ;                                       /* then we force opkg to downgrade */ 
+                                                              /* We need to use a value < 0 because in the 0 case we are asking to */
+                                                              /* reinstall, and some check could fail asking the "force-reinstall" option */
+          } 
+	  if (cmp > 0) {
+	         opkg_message(conf, OPKG_NOTICE,
+			      "Not downgrading package %s on %s from %s to %s.\n",
+			      old->name, old->dest->name, old_version, new_version);
+	         pkg->state_want = SW_DEINSTALL;
+	         pkg->state_flag |= SF_OBSOLETE;
+	         free(old_version);
+	         free(new_version);
+	         return 0;
+	  } else {
+	       free(old_version);
+	       free(new_version);
+	  }
+     }
+
+     opkg_message(conf, OPKG_DEBUG2,"Function: %s calling opkg_install_pkg \n",__FUNCTION__);
+     return opkg_install_pkg(conf, pkg,0);
+}
+
+opkg_error_t opkg_install_by_name(opkg_conf_t *conf, const char *pkg_name)
+{
+     int cmp;
+     pkg_t *old, *new;
+     char *old_version, *new_version;
+
+     opkg_message(conf, OPKG_DEBUG2, " Getting old  from pkg_hash_fetch \n" );
+     old = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg_name);
+     if ( old ) 
+        opkg_message(conf, OPKG_DEBUG2, " Old versions from pkg_hash_fetch %s \n",  old->version );
+    
+     opkg_message(conf, OPKG_DEBUG2, " Getting new  from pkg_hash_fetch \n" );
+     new = pkg_hash_fetch_best_installation_candidate_by_name(conf, pkg_name);
+     if ( new ) 
+        opkg_message(conf, OPKG_DEBUG2, " New versions from pkg_hash_fetch %s \n",  new->version );
+
+/* Pigi Basically here is broken the version stuff.
+   What's happening is that nothing provide the version to differents 
+   functions, so the returned struct is always the latest.
+   That's why the install by name don't work.
+*/
+     opkg_message(conf, OPKG_DEBUG2, " Versions from pkg_hash_fetch in %s ", __FUNCTION__ );
+
+     if ( old ) 
+        opkg_message(conf, OPKG_DEBUG2, " old %s ", old->version );
+     if ( new ) 
+        opkg_message(conf, OPKG_DEBUG2, " new %s ", new->version );
+     opkg_message(conf, OPKG_DEBUG2, " \n");
+
+     if (new == NULL) {
+	  return OPKG_PKG_HAS_NO_CANDIDATE;
+     }
+
+     new->state_flag |= SF_USER;
+     if (old) {
+	  old_version = pkg_version_str_alloc(old);
+	  new_version = pkg_version_str_alloc(new);
+
+	  cmp = pkg_compare_versions(old, new);
+          if ( (conf->force_downgrade==1) && (cmp > 0) ){     /* We've been asked to allow downgrade  and version is precedent */
+	     opkg_message(conf, OPKG_DEBUG, " Forcing downgrade \n");
+             cmp = -1 ;                                       /* then we force opkg to downgrade */ 
+                                                              /* We need to use a value < 0 because in the 0 case we are asking to */
+                                                              /* reinstall, and some check could fail asking the "force-reinstall" option */
+          } 
+	  opkg_message(conf, OPKG_DEBUG, 
+		       "Comparing visible versions of pkg %s:"
+		       "\n\t%s is installed "
+		       "\n\t%s is available "
+		       "\n\t%d was comparison result\n",
+		       pkg_name, old_version, new_version, cmp);
+	  if (cmp == 0 && !conf->force_reinstall) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Package %s (%s) installed in %s is up to date.\n",
+			    old->name, old_version, old->dest->name);
+	       free(old_version);
+	       free(new_version);
+	       return 0;
+	  } else if (cmp > 0) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Not downgrading package %s on %s from %s to %s.\n",
+			    old->name, old->dest->name, old_version, new_version);
+	       free(old_version);
+	       free(new_version);
+	       return 0;
+	  } else if (cmp < 0) {
+	       new->dest = old->dest;
+	       old->state_want = SW_DEINSTALL;    /* Here probably the problem for bug 1277 */
+	  }
+     }
+
+     /* XXX: CLEANUP: The error code of opkg_install_by_name is really
+	supposed to be an opkg_error_t, but opkg_install_pkg could
+	return any kind of integer, (might be errno from a syscall,
+	etc.). This is a real mess and will need to be cleaned up if
+	anyone ever wants to make a nice libopkg. */
+
+     opkg_message(conf, OPKG_DEBUG2,"Function: %s calling opkg_install_pkg \n",__FUNCTION__);
+     return opkg_install_pkg(conf, new,0);
+}
+
+opkg_error_t opkg_install_multi_by_name(opkg_conf_t *conf, const char *pkg_name)
+{
+     abstract_pkg_vec_t *providers = pkg_hash_fetch_all_installation_candidates (&conf->pkg_hash, pkg_name);
+     int i;
+     opkg_error_t err;
+     abstract_pkg_t *ppkg ;
+
+     if (providers == NULL)
+	  return OPKG_PKG_HAS_NO_CANDIDATE;
+
+     for (i = 0; i < providers->len; i++) {
+	  ppkg = abstract_pkg_vec_get(providers, i);
+          opkg_message(conf, OPKG_DEBUG2,"Function: %s calling opkg_install_by_name %d \n",__FUNCTION__, i);
+	  err = opkg_install_by_name(conf, ppkg->name);
+	  if (err)
+	       return err;
+/* XXX Maybe ppkg should be freed ? */
+     }
+     return 0;
+}
+
+/*
+ * Walk dependence graph starting with pkg, collect packages to be
+ * installed into pkgs_needed, in dependence order.
+ */
+int pkg_mark_dependencies_for_installation(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *pkgs_needed)
+{
+     int i, err;
+     pkg_vec_t *depends = pkg_vec_alloc();
+     char **unresolved = NULL;
+     int ndepends;
+
+     ndepends = pkg_hash_fetch_unsatisfied_dependencies(conf, 
+							pkg, depends, 
+							&unresolved);
+
+     if (unresolved) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "%s: Cannot satisfy the following dependencies for %s:\n\t",
+		       conf->force_depends ? "Warning" : "ERROR", pkg->name);
+	  while (*unresolved) {
+	       opkg_message(conf, OPKG_ERROR, " %s", *unresolved);
+	       unresolved++;
+	  }
+	  opkg_message(conf, OPKG_ERROR, "\n");
+	  if (! conf->force_depends) {
+	       opkg_message(conf, OPKG_INFO,
+			    "This could mean that your package list is out of date or that the packages\n"
+			    "mentioned above do not yet exist (try 'opkg update'). To proceed in spite\n"
+			    "of this problem try again with the '-force-depends' option.\n");
+	       pkg_vec_free(depends);
+	       return OPKG_PKG_DEPS_UNSATISFIED;
+	  }
+     }
+
+     if (ndepends <= 0) {
+	  pkg_vec_free(depends);
+	  return 0;
+     }
+
+     for (i = 0; i < depends->len; i++) {
+	  pkg_t *dep = depends->pkgs[i];
+	  /* The package was uninstalled when we started, but another
+	     dep earlier in this loop may have depended on it and pulled
+	     it in, so check first. */
+	  if ((dep->state_status != SS_INSTALLED)
+	      && (dep->state_status != SS_UNPACKED)
+	      && (dep->state_want != SW_INSTALL)) {
+
+	       /* Mark packages as to-be-installed */
+	       dep->state_want = SW_INSTALL;
+
+	       /* Dependencies should be installed the same place as pkg */
+	       if (dep->dest == NULL) {
+		    dep->dest = pkg->dest;
+	       }
+
+	       err = pkg_mark_dependencies_for_installation(conf, dep, pkgs_needed);
+	       if (err) {
+		    pkg_vec_free(depends);
+		    return err;
+	       }
+	  }
+     }
+     if (pkgs_needed)
+	  pkg_vec_insert(pkgs_needed, pkg);
+
+     pkg_vec_free(depends);
+
+     return 0;
+}
+
+int name_mark_dependencies_for_installation(opkg_conf_t *conf, const char *pkg_name, pkg_vec_t *pkgs_needed)
+{
+     int cmp;
+     pkg_t *old, *new;
+     char *old_version, *new_version;
+
+     old = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg_name);
+    
+     new = pkg_hash_fetch_best_installation_candidate_by_name(conf, pkg_name);
+     if (new == NULL) {
+	  return OPKG_PKG_HAS_NO_CANDIDATE;
+     }
+     if (old) {
+	  old_version = pkg_version_str_alloc(old);
+	  new_version = pkg_version_str_alloc(new);
+
+	  cmp = pkg_compare_versions(old, new);
+          if ( (conf->force_downgrade==1) && (cmp > 0) ){     /* We've been asked to allow downgrade  and version is precedent */
+	    opkg_message(conf, OPKG_DEBUG, " Forcing downgrade ");
+             cmp = -1 ;                                       /* then we force opkg to downgrade */ 
+                                                              /* We need to use a value < 0 because in the 0 case we are asking to */
+                                                              /* reinstall, and some check could fail asking the "force-reinstall" option */
+          } 
+	  opkg_message(conf, OPKG_DEBUG, 
+		       "comparing visible versions of pkg %s:"
+		       "\n\t%s is installed "
+		       "\n\t%s is available "
+		       "\n\t%d was comparison result\n",
+		       pkg_name, old_version, new_version, cmp);
+	  if (cmp == 0 && !conf->force_reinstall) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Package %s (%s) installed in %s is up to date.\n",
+			    old->name, old_version, old->dest->name);
+	       free(old_version);
+	       free(new_version);
+	       return 0;
+	  } else if (cmp > 0) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Not downgrading package %s on %s from %s to %s.\n",
+			    old->name, old->dest->name, old_version, new_version);
+	       free(old_version);
+	       free(new_version);
+	       return 0;
+	  } else if (cmp < 0) {
+	       new->dest = old->dest;
+	       old->state_want = SW_DEINSTALL;
+	       old->state_flag |= SF_OBSOLETE;
+	  }
+     }
+     return pkg_mark_dependencies_for_installation(conf, new, pkgs_needed);
+}
+
+
+
+int satisfy_dependencies_for(opkg_conf_t *conf, pkg_t *pkg)
+{
+     int i, err;
+     pkg_vec_t *depends = pkg_vec_alloc();
+     pkg_t *dep;
+     char **unresolved = NULL;
+     int ndepends;
+
+     ndepends = pkg_hash_fetch_unsatisfied_dependencies(conf, 
+							pkg, depends, 
+							&unresolved);
+
+     if (unresolved) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "%s: Cannot satisfy the following dependencies for %s:\n\t",
+		       conf->force_depends ? "Warning" : "ERROR", pkg->name);
+	  while (*unresolved) {
+	       opkg_message(conf, OPKG_ERROR, " %s", *unresolved);
+	       unresolved++;
+	  }
+	  opkg_message(conf, OPKG_ERROR, "\n");
+	  if (! conf->force_depends) {
+	       opkg_message(conf, OPKG_INFO,
+			    "This could mean that your package list is out of date or that the packages\n"
+			    "mentioned above do not yet exist (try 'opkg update'). To proceed in spite\n"
+			    "of this problem try again with the '-force-depends' option.\n");
+	       pkg_vec_free(depends);
+	       return OPKG_PKG_DEPS_UNSATISFIED;
+	  }
+     }
+
+     if (ndepends <= 0) {
+	  return 0;
+     }
+
+     /* Mark packages as to-be-installed */
+     for (i=0; i < depends->len; i++) {
+	  /* Dependencies should be installed the same place as pkg */
+	  if (depends->pkgs[i]->dest == NULL) {
+	       depends->pkgs[i]->dest = pkg->dest;
+	  }
+	  depends->pkgs[i]->state_want = SW_INSTALL;
+     }
+
+     for (i = 0; i < depends->len; i++) {
+	  dep = depends->pkgs[i];
+	  /* The package was uninstalled when we started, but another
+	     dep earlier in this loop may have depended on it and pulled
+	     it in, so check first. */
+	  if ((dep->state_status != SS_INSTALLED)
+	      && (dep->state_status != SS_UNPACKED)) {
+               opkg_message(conf, OPKG_DEBUG2,"Function: %s calling opkg_install_pkg \n",__FUNCTION__);
+	       err = opkg_install_pkg(conf, dep,0);
+	       /* mark this package as having been automatically installed to
+	        * satisfy a dependancy */
+	       dep->auto_installed = 1;
+	       if (err) {
+		    pkg_vec_free(depends);
+		    return err;
+	       }
+	  }
+     }
+
+     pkg_vec_free(depends);
+
+     return 0;
+}
+
+
+/* check all packages have their dependences satisfied, e.g., in case an upgraded package split */ 
+int opkg_satisfy_all_dependences(opkg_conf_t *conf)
+{
+     if (conf->nodeps == 0) {
+	  int i;
+	  pkg_vec_t *installed = pkg_vec_alloc();
+	  pkg_hash_fetch_all_installed(&conf->pkg_hash, installed);
+	  for (i = 0; i < installed->len; i++) {
+	       pkg_t *pkg = installed->pkgs[i];
+	       satisfy_dependencies_for(conf, pkg);
+	  }
+	  pkg_vec_free(installed);
+     }
+     return 0;
+}
+
+
+
+static int check_conflicts_for(opkg_conf_t *conf, pkg_t *pkg)
+{
+     int i;
+     pkg_vec_t *conflicts = NULL;
+     int level;
+     const char *prefix;
+     if (conf->force_depends) {
+	  level = OPKG_NOTICE;
+	  prefix = "Warning";
+     } else {
+	  level = OPKG_ERROR;
+	  prefix = "ERROR";
+     }
+
+     if (!conf->force_depends)
+	  conflicts = (pkg_vec_t *)pkg_hash_fetch_conflicts(&conf->pkg_hash, pkg);
+
+     if (conflicts) {
+	  opkg_message(conf, level,
+		       "%s: The following packages conflict with %s:\n\t", prefix, pkg->name);
+	  i = 0;
+	  while (i < conflicts->len)
+	       opkg_message(conf, level, " %s", conflicts->pkgs[i++]->name);
+	  opkg_message(conf, level, "\n");
+	  pkg_vec_free(conflicts);
+	  return OPKG_PKG_DEPS_UNSATISFIED;
+     }
+     return 0;
+}
+
+static int update_file_ownership(opkg_conf_t *conf, pkg_t *new_pkg, pkg_t *old_pkg)
+{
+     str_list_t *new_list = pkg_get_installed_files(new_pkg);
+     str_list_elt_t *iter;
+
+     for (iter = new_list->head; iter; iter = iter->next) {
+	  char *new_file = iter->data;
+	  pkg_t *owner = file_hash_get_file_owner(conf, new_file);
+	  if (!new_file)
+	       opkg_message(conf, OPKG_ERROR, "Null new_file for new_pkg=%s\n", new_pkg->name);
+	  if (!owner || (owner == old_pkg))
+	       file_hash_set_file_owner(conf, new_file, new_pkg);
+     }
+     if (old_pkg) {
+	  str_list_t *old_list = pkg_get_installed_files(old_pkg);
+	  for (iter = old_list->head; iter; iter = iter->next) {
+	       char *old_file = iter->data;
+	       pkg_t *owner = file_hash_get_file_owner(conf, old_file);
+	       if (owner == old_pkg) {
+		    /* obsolete */
+		    hash_table_insert(&conf->obs_file_hash, old_file, old_pkg);
+	       }
+	  }
+     }
+     return 0;
+}
+
+static int verify_pkg_installable(opkg_conf_t *conf, pkg_t *pkg)
+{
+    /* XXX: FEATURE: Anything else needed here? Maybe a check on free space? */
+
+    /* sma 6.20.02:  yup; here's the first bit */
+    /* 
+     * XXX: BUG easy for cworth
+     * 1) please point the call below to the correct current root destination
+     * 2) we need to resolve how to check the required space for a pending pkg, 
+     *    my diddling with the .ipk file size below isn't going to cut it.
+     * 3) return a proper error code instead of 1
+     */
+     int comp_size, blocks_available;
+    
+     if (!conf->force_space && pkg->installed_size != NULL) {
+	  blocks_available = get_available_blocks(conf->default_dest->root_dir);
+
+	  comp_size = strtoul(pkg->installed_size, NULL, 0);
+	  /* round up a blocks count without doing fancy-but-slow casting jazz */ 
+	  comp_size = (int)((comp_size + 1023) / 1024);
+
+	  if (comp_size >= blocks_available) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Only have %d available blocks on filesystem %s, pkg %s needs %d\n", 
+			    blocks_available, conf->default_dest->root_dir, pkg->name, comp_size);
+	       return ENOSPC;
+	  }
+     }
+     return 0;
+}
+
+static int unpack_pkg_control_files(opkg_conf_t *conf, pkg_t *pkg)
+{
+     int err;
+     char *conffiles_file_name;
+     char *root_dir;
+     FILE *conffiles_file;
+
+     sprintf_alloc(&pkg->tmp_unpack_dir, "%s/%s-XXXXXX", conf->tmp_dir, pkg->name);
+
+     pkg->tmp_unpack_dir = mkdtemp(pkg->tmp_unpack_dir);
+     if (pkg->tmp_unpack_dir == NULL) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "%s: Failed to create temporary directory '%s': %s\n",
+		       __FUNCTION__, pkg->tmp_unpack_dir, strerror(errno));
+	  return errno;
+     }
+
+     err = pkg_extract_control_files_to_dir(pkg, pkg->tmp_unpack_dir);
+     if (err) {
+	  return err;
+     }
+
+     /* XXX: CLEANUP: There might be a cleaner place to read in the
+	conffiles. Seems like I should be able to get everything to go
+	through pkg_init_from_file. If so, maybe it would make sense to
+	move all of unpack_pkg_control_files to that function. */
+
+     /* Don't need to re-read conffiles if we already have it */
+     if (pkg->conffiles.head) {
+	  return 0;
+     }
+
+     sprintf_alloc(&conffiles_file_name, "%s/conffiles", pkg->tmp_unpack_dir);
+     if (! file_exists(conffiles_file_name)) {
+	  free(conffiles_file_name);
+	  return 0;
+     }
+    
+     conffiles_file = fopen(conffiles_file_name, "r");
+     if (conffiles_file == NULL) {
+	  fprintf(stderr, "%s: failed to open %s: %s\n",
+		  __FUNCTION__, conffiles_file_name, strerror(errno));
+	  free(conffiles_file_name);
+	  return errno;
+     }
+     free(conffiles_file_name);
+
+     while (1) {
+	  char *cf_name;
+	  char *cf_name_in_dest;
+
+	  cf_name = file_read_line_alloc(conffiles_file);
+	  if (cf_name == NULL) {
+	       break;
+	  }
+	  str_chomp(cf_name);
+	  if (cf_name[0] == '\0') {
+	       continue;
+	  }
+
+	  /* Prepend dest->root_dir to conffile name.
+	     Take pains to avoid multiple slashes. */
+	  root_dir = pkg->dest->root_dir;
+	  if (conf->offline_root)
+	       /* skip the offline_root prefix */
+	       root_dir = pkg->dest->root_dir + strlen(conf->offline_root);
+	  sprintf_alloc(&cf_name_in_dest, "%s%s", root_dir,
+			cf_name[0] == '/' ? (cf_name + 1) : cf_name);
+
+	  /* Can't get an md5sum now, (file isn't extracted yet).
+	     We'll wait until resolve_conffiles */
+	  conffile_list_append(&pkg->conffiles, cf_name_in_dest, NULL);
+
+	  free(cf_name);
+	  free(cf_name_in_dest);
+     }
+
+     fclose(conffiles_file);
+
+     return 0;
+}
+
+/* returns number of installed replacees */
+int pkg_get_installed_replacees(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *installed_replacees)
+{
+     abstract_pkg_t **replaces = pkg->replaces;
+     int replaces_count = pkg->replaces_count;
+     int i, j;
+     for (i = 0; i < replaces_count; i++) {
+	  abstract_pkg_t *ab_pkg = replaces[i];
+	  pkg_vec_t *pkg_vec = ab_pkg->pkgs;
+	  if (pkg_vec) {
+	       for (j = 0; j < pkg_vec->len; j++) {
+		    pkg_t *replacee = pkg_vec->pkgs[j];
+		    if (!pkg_conflicts(pkg, replacee))
+			 continue;
+		    if (replacee->state_status == SS_INSTALLED) {
+			 pkg_vec_insert(installed_replacees, replacee);
+		    }
+	       }
+	  }
+     }
+     return installed_replacees->len;
+}
+
+int pkg_remove_installed_replacees(opkg_conf_t *conf, pkg_vec_t *replacees)
+{
+     int i;
+     int replaces_count = replacees->len;
+     for (i = 0; i < replaces_count; i++) {
+	  pkg_t *replacee = replacees->pkgs[i];
+	  int err;
+	  replacee->state_flag |= SF_REPLACE; /* flag it so remove won't complain */
+	  err = opkg_remove_pkg(conf, replacee,0);
+	  if (err)
+	       return err;
+     }
+     return 0;
+}
+
+/* to unwind the removal: make sure they are installed */
+int pkg_remove_installed_replacees_unwind(opkg_conf_t *conf, pkg_vec_t *replacees)
+{
+     int i, err;
+     int replaces_count = replacees->len;
+     for (i = 0; i < replaces_count; i++) {
+	  pkg_t *replacee = replacees->pkgs[i];
+	  if (replacee->state_status != SS_INSTALLED) {
+               opkg_message(conf, OPKG_DEBUG2,"Function: %s calling opkg_install_pkg \n",__FUNCTION__);
+	       err = opkg_install_pkg(conf, replacee,0);
+	       if (err)
+		    return err;
+	  }
+     }
+     return 0;
+}
+
+int caught_sigint = 0;
+static void opkg_install_pkg_sigint_handler(int sig)
+{
+     caught_sigint = sig;
+}
+
+/* compares versions of pkg and old_pkg, returns 0 if OK to proceed with installation of pkg, 1 otherwise */
+static int opkg_install_check_downgrade(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg, int message)
+{	  
+     if (old_pkg) {
+          char message_out[15];
+	  char *old_version = pkg_version_str_alloc(old_pkg);
+	  char *new_version = pkg_version_str_alloc(pkg);
+	  int cmp = pkg_compare_versions(old_pkg, pkg);
+	  int rc = 0;
+
+          memset(message_out,'\x0',15);
+          strncpy (message_out,"Upgrading ",strlen("Upgrading ")); 
+          if ( (conf->force_downgrade==1) && (cmp > 0) ){     /* We've been asked to allow downgrade  and version is precedent */
+             cmp = -1 ;                                       /* then we force opkg to downgrade */ 
+             strncpy (message_out,"Downgrading ",strlen("Downgrading "));         /* We need to use a value < 0 because in the 0 case we are asking to */
+                                                              /* reinstall, and some check could fail asking the "force-reinstall" option */
+          } 
+
+	  if (cmp > 0) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "Not downgrading package %s on %s from %s to %s.\n",
+			    old_pkg->name, old_pkg->dest->name, old_version, new_version);
+	       rc = 1;
+	  } else if (cmp < 0) {
+	       opkg_message(conf, OPKG_NOTICE,
+			    "%s%s on %s from %s to %s...\n",
+			    message_out, pkg->name, old_pkg->dest->name, old_version, new_version);
+	       pkg->dest = old_pkg->dest;
+	       rc = 0;
+	  } else /* cmp == 0 */ {
+	       if (conf->force_reinstall) {
+		    opkg_message(conf, OPKG_NOTICE,
+				 "Reinstalling %s (%s) on %s...\n",
+				 pkg->name, new_version, old_pkg->dest->name);
+		    pkg->dest = old_pkg->dest;
+		    rc = 0;
+	       } else {
+		    opkg_message(conf, OPKG_NOTICE,
+				 "Not installing %s (%s) on %s -- already installed.\n",
+				 pkg->name, new_version, old_pkg->dest->name);
+		    rc = 1;
+	       }
+	  } 
+	  free(old_version);
+	  free(new_version);
+	  return rc;
+     } else {
+      char message_out[15] ;
+      memset(message_out,'\x0',15);
+      if ( message ) 
+          strncpy( message_out,"Upgrading ",strlen("Upgrading ") );
+      else
+          strncpy( message_out,"Installing ",strlen("Installing ") );
+	  char *version = pkg_version_str_alloc(pkg);
+      
+	  opkg_message(conf, OPKG_NOTICE,
+		       "%s%s (%s) to %s...\n", message_out,
+		       pkg->name, version, pkg->dest->name);
+	  free(version);
+	  return 0;
+     }
+}
+
+/* and now the meat... */
+int opkg_install_pkg(opkg_conf_t *conf, pkg_t *pkg, int from_upgrade)
+{
+     int err = 0;
+     int message = 0;
+     pkg_t *old_pkg = NULL;
+     pkg_vec_t *replacees;
+     abstract_pkg_t *ab_pkg = NULL;
+     int old_state_flag;
+     char* file_md5;
+     char *pkgid;
+
+    
+     if ( from_upgrade ) 
+        message = 1;            /* Coming from an upgrade, and should change the output message */
+
+     if (!pkg) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "INTERNAL ERROR: null pkg passed to opkg_install_pkg\n");
+	  return -EINVAL;
+     }
+
+     opkg_message(conf, OPKG_DEBUG2, "Function: %s calling pkg_arch_supported %s \n", __FUNCTION__, __FUNCTION__);
+
+     if (!pkg_arch_supported(conf, pkg)) {
+	  opkg_message(conf, OPKG_ERROR, "INTERNAL ERROR: architecture %s for pkg %s is unsupported.\n",
+		       pkg->architecture, pkg->name);
+	  return -EINVAL;
+     }
+     if (pkg->state_status == SS_INSTALLED && conf->force_reinstall == 0 && conf->nodeps == 0) {
+	  err = satisfy_dependencies_for(conf, pkg);
+	  if (err) { return err; }
+
+	  opkg_message(conf, OPKG_NOTICE,
+		       "Package %s is already installed in %s.\n", 
+		       pkg->name, pkg->dest->name);
+	  return 0;
+     }
+
+     if (pkg->dest == NULL) {
+	  pkg->dest = conf->default_dest;
+     }
+
+     old_pkg = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg->name);
+
+     err = opkg_install_check_downgrade(conf, pkg, old_pkg, message);
+     if (err) { return err; }
+
+     pkg->state_want = SW_INSTALL;
+     if (old_pkg){                          
+         old_pkg->state_want = SW_DEINSTALL; /* needed for check_data_file_clashes of dependences */
+     }
+
+
+     /* Abhaya: conflicts check */
+     err = check_conflicts_for(conf, pkg);
+     if (err) { return err; }
+    
+     /* this setup is to remove the upgrade scenario in the end when
+	installing pkg A, A deps B & B deps on A. So both B and A are
+	installed. Then A's installation is started resulting in an
+	uncecessary upgrade */ 
+     if (pkg->state_status == SS_INSTALLED
+	 && conf->force_reinstall == 0) return 0;
+    
+     err = verify_pkg_installable(conf, pkg);
+     if (err) { return err; }
+
+     if (pkg->local_filename == NULL) {
+	  err = opkg_download_pkg(conf, pkg, conf->tmp_dir);
+	  if (err) {
+	       opkg_message(conf, OPKG_ERROR,
+			    "Failed to download %s. Perhaps you need to run 'opkg update'?\n",
+			    pkg->name);
+	       return err;
+	  }
+     }
+
+/* Check for md5 values */
+     if (pkg->md5sum)
+     {
+         file_md5 = file_md5sum_alloc(pkg->local_filename);
+         if (strcmp(file_md5, pkg->md5sum))
+         {
+              opkg_message(conf, OPKG_ERROR,
+                           "Package %s md5sum mismatch. Either the opkg or the package index are corrupt. Try 'opkg update'.\n",
+                           pkg->name);
+              free(file_md5);
+              return err;
+         }
+         free(file_md5);
+     }
+
+     if (pkg->tmp_unpack_dir == NULL) {
+	  unpack_pkg_control_files(conf, pkg);
+     }
+
+     /* We should update the filelist here, so that upgrades of packages that split will not fail. -Jamey 27-MAR-03 */
+/* Pigi: check if it will pass from here when replacing. It seems to fail */
+/* That's rather strange that files don't change owner. Investigate !!!!!!*/
+     err = update_file_ownership(conf, pkg, old_pkg);
+     if (err) { return err; }
+
+     if (conf->nodeps == 0) {
+	  err = satisfy_dependencies_for(conf, pkg);
+	  if (err) { return err; }
+     }
+
+     replacees = pkg_vec_alloc();
+     pkg_get_installed_replacees(conf, pkg, replacees);
+
+     sprintf_alloc (&pkgid, "%s;%s;%s;", pkg->name, pkg->version, pkg->architecture);
+     opkg_set_current_state (OPKG_STATE_INSTALLING_PKG, pkgid);
+     free (pkgid);
+
+     /* this next section we do with SIGINT blocked to prevent inconsistency between opkg database and filesystem */
+     {
+	  sigset_t newset, oldset;
+	  sighandler_t old_handler = NULL;
+	  int use_signal = 0;
+	  caught_sigint = 0;
+	  if (use_signal) {
+	       old_handler = signal(SIGINT, opkg_install_pkg_sigint_handler);
+	  } else {
+	       sigemptyset(&newset);
+	       sigaddset(&newset, SIGINT);
+	       sigprocmask(SIG_BLOCK, &newset, &oldset);
+	  }
+
+	  opkg_state_changed++;
+	  pkg->state_flag |= SF_FILELIST_CHANGED;
+
+	  /* XXX: BUG: we really should treat replacement more like an upgrade
+	   *      Instead, we're going to remove the replacees 
+	   */
+	  err = pkg_remove_installed_replacees(conf, replacees);
+	  if (err) goto UNWIND_REMOVE_INSTALLED_REPLACEES;
+
+	  err = prerm_upgrade_old_pkg(conf, pkg, old_pkg);
+	  if (err) goto UNWIND_PRERM_UPGRADE_OLD_PKG;
+
+	  err = prerm_deconfigure_conflictors(conf, pkg, replacees);
+	  if (err) goto UNWIND_PRERM_DECONFIGURE_CONFLICTORS;
+
+	  err = preinst_configure(conf, pkg, old_pkg);
+	  if (err) goto UNWIND_PREINST_CONFIGURE;
+
+	  err = backup_modified_conffiles(conf, pkg, old_pkg);
+	  if (err) goto UNWIND_BACKUP_MODIFIED_CONFFILES;
+
+	  err = check_data_file_clashes(conf, pkg, old_pkg);
+	  if (err) goto UNWIND_CHECK_DATA_FILE_CLASHES;
+
+	  err = postrm_upgrade_old_pkg(conf, pkg, old_pkg);
+	  if (err) goto UNWIND_POSTRM_UPGRADE_OLD_PKG;
+
+	  if (conf->noaction) return 0;
+
+	  /* point of no return: no unwinding after this */
+	  if (old_pkg && !conf->force_reinstall) {
+	       old_pkg->state_want = SW_DEINSTALL;
+
+	       if (old_pkg->state_flag & SF_NOPRUNE) {
+		    opkg_message(conf, OPKG_INFO,
+				 "  not removing obsolesced files because package marked noprune\n");
+	       } else {
+		    opkg_message(conf, OPKG_INFO,
+				 "  removing obsolesced files\n");
+		    remove_obsolesced_files(conf, pkg, old_pkg);
+	       }
+               /* removing files from old package, to avoid ghost files */ 
+               remove_data_files_and_list(conf, old_pkg);
+/* Pigi : It should be better to remove also maintainer and postrem scripts here, just in case*/
+               remove_maintainer_scripts_except_postrm(conf, old_pkg);
+               remove_postrm(conf, old_pkg);
+/* Pigi */
+
+	  }
+
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  installing maintainer scripts\n");
+	  install_maintainer_scripts(conf, pkg, old_pkg);
+
+	  /* the following just returns 0 */
+	  remove_disappeared(conf, pkg);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  installing data files\n");
+	  install_data_files(conf, pkg);
+
+/* read comments from function for detail but I will execute this here as all other tests are ok.*/
+	  err = check_data_file_clashes_change(conf, pkg, old_pkg);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  resolving conf files\n");
+	  resolve_conffiles(conf, pkg);
+
+	  pkg->state_status = SS_UNPACKED;
+	  old_state_flag = pkg->state_flag;
+	  pkg->state_flag &= ~SF_PREFER;
+	  opkg_message(conf, OPKG_DEBUG, "   pkg=%s old_state_flag=%x state_flag=%x\n", pkg->name, old_state_flag, pkg->state_flag);
+
+	  if (old_pkg && !conf->force_reinstall) {
+	       old_pkg->state_status = SS_NOT_INSTALLED;
+	  }
+
+	  time(&pkg->installed_time);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  cleanup temp files\n");
+	  cleanup_temporary_files(conf, pkg);
+
+	  ab_pkg = pkg->parent;
+	  if (ab_pkg)
+	       ab_pkg->state_status = pkg->state_status;
+
+	  opkg_message(conf, OPKG_INFO, "Done.\n");
+
+	  if (use_signal)
+	       signal(SIGINT, old_handler);
+	  else
+	       sigprocmask(SIG_UNBLOCK, &newset, &oldset);
+
+	  return 0;
+     
+
+     UNWIND_POSTRM_UPGRADE_OLD_PKG:
+	  postrm_upgrade_old_pkg_unwind(conf, pkg, old_pkg);
+     UNWIND_CHECK_DATA_FILE_CLASHES:
+	  check_data_file_clashes_unwind(conf, pkg, old_pkg);
+     UNWIND_BACKUP_MODIFIED_CONFFILES:
+	  backup_modified_conffiles_unwind(conf, pkg, old_pkg);
+     UNWIND_PREINST_CONFIGURE:
+	  preinst_configure_unwind(conf, pkg, old_pkg);
+     UNWIND_PRERM_DECONFIGURE_CONFLICTORS:
+	  prerm_deconfigure_conflictors_unwind(conf, pkg, replacees);
+     UNWIND_PRERM_UPGRADE_OLD_PKG:
+	  prerm_upgrade_old_pkg_unwind(conf, pkg, old_pkg);
+     UNWIND_REMOVE_INSTALLED_REPLACEES:
+	  pkg_remove_installed_replacees_unwind(conf, replacees);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  cleanup temp files\n");
+	  cleanup_temporary_files(conf, pkg);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "Failed.\n");
+	  if (use_signal)
+	       signal(SIGINT, old_handler);
+	  else
+	       sigprocmask(SIG_UNBLOCK, &newset, &oldset);
+
+	  return err;
+     }
+     opkg_set_current_state (OPKG_STATE_NONE, NULL);
+}
+
+static int prerm_upgrade_old_pkg(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* DPKG_INCOMPATIBILITY:
+	dpkg does some things here that we don't do yet. Do we care?
+	
+	1. If a version of the package is already installed, call
+	   old-prerm upgrade new-version
+	2. If the script runs but exits with a non-zero exit status
+	   new-prerm failed-upgrade old-version
+	   Error unwind, for both the above cases:
+	   old-postinst abort-upgrade new-version
+     */
+     return 0;
+}
+
+static int prerm_upgrade_old_pkg_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* DPKG_INCOMPATIBILITY:
+	dpkg does some things here that we don't do yet. Do we care?
+	(See prerm_upgrade_old_package for details)
+     */
+     return 0;
+}
+
+static int prerm_deconfigure_conflictors(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *conflictors)
+{
+     /* DPKG_INCOMPATIBILITY:
+	dpkg does some things here that we don't do yet. Do we care?
+	2. If a 'conflicting' package is being removed at the same time:
+		1. If any packages depended on that conflicting package and
+		   --auto-deconfigure is specified, call, for each such package:
+		   deconfigured's-prerm deconfigure \
+		   in-favour package-being-installed version \
+		   removing conflicting-package version
+		Error unwind:
+		   deconfigured's-postinst abort-deconfigure \
+		   in-favour package-being-installed-but-failed version \
+		   removing conflicting-package version
+
+		   The deconfigured packages are marked as requiring
+		   configuration, so that if --install is used they will be
+		   configured again if possible.
+		2. To prepare for removal of the conflicting package, call:
+		   conflictor's-prerm remove in-favour package new-version
+		Error unwind:
+		   conflictor's-postinst abort-remove in-favour package new-version
+     */
+     return 0;
+}
+
+static int prerm_deconfigure_conflictors_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *conflictors)
+{
+     /* DPKG_INCOMPATIBILITY: dpkg does some things here that we don't
+	do yet. Do we care?  (See prerm_deconfigure_conflictors for
+	details) */
+     return 0;
+}
+
+static int preinst_configure(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     int err;
+     char *preinst_args;
+
+     if (old_pkg) {
+	  char *old_version = pkg_version_str_alloc(old_pkg);
+	  sprintf_alloc(&preinst_args, "upgrade %s", old_version);
+	  free(old_version);
+     } else if (pkg->state_status == SS_CONFIG_FILES) {
+	  char *pkg_version = pkg_version_str_alloc(pkg);
+	  sprintf_alloc(&preinst_args, "install %s", pkg_version);
+	  free(pkg_version);
+     } else {
+	  preinst_args = strdup("install");
+     }
+
+     err = pkg_run_script(conf, pkg, "preinst", preinst_args);
+     if (err) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "Aborting installation of %s\n", pkg->name);
+	  return 1;
+     }
+
+     free(preinst_args);
+
+     return 0;
+}
+
+static int preinst_configure_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* DPKG_INCOMPATIBILITY:
+	dpkg does the following error unwind, should we?
+	pkg->postrm abort-upgrade old-version
+	OR pkg->postrm abort-install old-version
+	OR pkg->postrm abort-install
+     */
+     return 0;
+}
+
+static int backup_modified_conffiles(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     int err;
+     conffile_list_elt_t *iter;
+     conffile_t *cf;
+
+     if (conf->noaction) return 0;
+
+     /* Backup all modified conffiles */
+     if (old_pkg) {
+	  for (iter = old_pkg->conffiles.head; iter; iter = iter->next) {
+	       char *cf_name;
+	       
+	       cf = iter->data;
+	       cf_name = root_filename_alloc(conf, cf->name);
+
+	       /* Don't worry if the conffile is just plain gone */
+	       if (file_exists(cf_name) && conffile_has_been_modified(conf, cf)) {
+		    err = backup_make_backup(conf, cf_name);
+		    if (err) {
+			 return err;
+		    }
+	       }
+	       free(cf_name);
+	  }
+     }
+
+     /* Backup all conffiles that were not conffiles in old_pkg */
+     for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+	  char *cf_name;
+	  cf = iter->data;
+	  cf_name = root_filename_alloc(conf, cf->name);
+	  /* Ignore if this was a conffile in old_pkg as well */
+	  if (pkg_get_conffile(old_pkg, cf->name)) {
+	       continue;
+	  }
+
+	  if (file_exists(cf_name) && (! backup_exists_for(cf_name))) {
+	       err = backup_make_backup(conf, cf_name);
+	       if (err) {
+		    return err;
+	       }
+	  }
+	  free(cf_name);
+     }
+
+     return 0;
+}
+
+static int backup_modified_conffiles_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     conffile_list_elt_t *iter;
+
+     if (old_pkg) {
+	  for (iter = old_pkg->conffiles.head; iter; iter = iter->next) {
+	       backup_remove(iter->data->name);
+	  }
+     }
+
+     for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+	  backup_remove(iter->data->name);
+     }
+
+     return 0;
+}
+
+
+static int check_data_file_clashes(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* DPKG_INCOMPATIBILITY:
+	opkg takes a slightly different approach than dpkg at this
+	point.  dpkg installs each file in the new package while
+	creating a backup for any file that is replaced, (so that it
+	can unwind if necessary).  To avoid complexity and redundant
+	storage, opkg doesn't do any installation until later, (at the
+	point at which dpkg removes the backups.
+	
+	But, we do have to check for data file clashes, since after
+	installing a package with a file clash, removing either of the
+	packages involved in the clash has the potential to break the
+	other package.
+     */
+     str_list_t *files_list;
+     str_list_elt_t *iter;
+
+     int clashes = 0;
+
+     files_list = pkg_get_installed_files(pkg);
+     for (iter = files_list->head; iter; iter = iter->next) {
+	  char *root_filename;
+	  char *filename = iter->data;
+	  root_filename = root_filename_alloc(conf, filename);
+	  if (file_exists(root_filename) && (! file_is_dir(root_filename))) {
+	       pkg_t *owner;
+	       pkg_t *obs;
+	       /* Pre-existing conffiles are OK */
+	       /* @@@@ should have way to check that it is a conffile -Jamey */
+	       if (backup_exists_for(root_filename)) {
+		    continue;
+	       }
+
+	       /* Pre-existing files are OK if force-overwrite was asserted. */ 
+	       if (conf->force_overwrite) {
+		    /* but we need to change who owns this file */
+		    file_hash_set_file_owner(conf, filename, pkg);
+		    continue;
+	       }
+
+	       owner = file_hash_get_file_owner(conf, filename);
+
+	       /* Pre-existing files are OK if owned by the pkg being upgraded. */
+	       if (owner && old_pkg) {
+		    if (strcmp(owner->name, old_pkg->name) == 0) {
+			 continue;
+		    }
+	       }
+
+	       /* Pre-existing files are OK if owned by a package replaced by new pkg. */
+	       if (owner) {
+                    opkg_message(conf, OPKG_DEBUG2, "Checking for replaces for %s in package %s\n", filename, owner->name);
+		    if (pkg_replaces(pkg, owner)) {
+			 continue;
+		    }
+/* If the file that would be installed is owned by the same package, ( as per a reinstall or similar )
+   then it's ok to overwrite. */
+                    if (strcmp(owner->name,pkg->name)==0){
+			 opkg_message(conf, OPKG_INFO, "Replacing pre-existing file %s owned by package %s\n", filename, owner->name);
+			 continue;
+                    }
+	       }
+
+	       /* Pre-existing files are OK if they are obsolete */
+	       obs = hash_table_get(&conf->obs_file_hash, filename);
+	       if (obs) {
+		    opkg_message(conf, OPKG_INFO, "Pre-exiting file %s is obsolete.  obs_pkg=%s\n", filename, obs->name);
+		    continue;
+	       }
+
+	       /* We have found a clash. */
+	       opkg_message(conf, OPKG_ERROR,
+			    "Package %s wants to install file %s\n"
+			    "\tBut that file is already provided by package ",
+			    pkg->name, filename);
+	       if (owner) {
+		    opkg_message(conf, OPKG_ERROR,
+				 "%s\n", owner->name);
+	       } else {
+		    opkg_message(conf, OPKG_ERROR,
+				 "<no package>\nPlease move this file out of the way and try again.\n");
+	       }
+	       clashes++;
+	  }
+	  free(root_filename);
+     }
+     pkg_free_installed_files(pkg);
+
+     return clashes;
+}
+
+static int check_data_file_clashes_change(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+    /* Basically that's the worst hack I could do to be able to change ownership of
+       file list, but, being that we have no way to unwind the mods, due to structure
+       of hash table, probably is the quickest hack too, whishing it would not slow-up thing too much.
+       What we do here is change the ownership of file in hash if a replace ( or similar events
+       happens )
+       Only the action that are needed to change name should be considered.
+       @@@ To change after 1.0 release.
+     */
+     str_list_t *files_list;
+     str_list_elt_t *iter;
+
+     int clashes = 0;
+
+     files_list = pkg_get_installed_files(pkg);
+     for (iter = files_list->head; iter; iter = iter->next) {
+	  char *root_filename;
+	  char *filename = iter->data;
+	  root_filename = root_filename_alloc(conf, filename);
+	  if (file_exists(root_filename) && (! file_is_dir(root_filename))) {
+	       pkg_t *owner;
+
+	       if (conf->force_overwrite) {
+		    /* but we need to change who owns this file */
+		    file_hash_set_file_owner(conf, filename, pkg);
+		    continue;
+	       }
+
+	       owner = file_hash_get_file_owner(conf, filename);
+
+	       /* Pre-existing files are OK if owned by a package replaced by new pkg. */
+	       if (owner) {
+		    if (pkg_replaces(pkg, owner)) {
+/* It's now time to change the owner of that file. 
+   It has been "replaced" from the new "Replaces", then I need to inform lists file about that.  */
+			 opkg_message(conf, OPKG_INFO, "Replacing pre-existing file %s owned by package %s\n", filename, owner->name);
+		         file_hash_set_file_owner(conf, filename, pkg);
+			 continue;
+		    }
+	       }
+
+	  }
+	  free(root_filename);
+     }
+     pkg_free_installed_files(pkg);
+
+     return clashes;
+}
+
+static int check_data_file_clashes_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* Nothing to do since check_data_file_clashes doesn't change state */
+     return 0;
+}
+
+static int postrm_upgrade_old_pkg(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* DPKG_INCOMPATIBILITY: dpkg does the following here, should we?
+	1. If the package is being upgraded, call
+	   old-postrm upgrade new-version
+	2. If this fails, attempt:
+	   new-postrm failed-upgrade old-version
+	Error unwind, for both cases:
+	   old-preinst abort-upgrade new-version    */
+     return 0;
+}
+
+static int postrm_upgrade_old_pkg_unwind(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     /* DPKG_INCOMPATIBILITY:
+	dpkg does some things here that we don't do yet. Do we care?
+	(See postrm_upgrade_old_pkg for details)
+     */
+    return 0;
+}
+
+static int remove_obsolesced_files(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     int err;
+     str_list_t *old_files;
+     str_list_elt_t *of;
+     str_list_t *new_files;
+     str_list_elt_t *nf;
+
+     if (old_pkg == NULL) {
+	  return 0;
+     }
+
+     old_files = pkg_get_installed_files(old_pkg);
+     new_files = pkg_get_installed_files(pkg);
+
+     for (of = old_files->head; of; of = of->next) {
+	  pkg_t *owner;
+	  char *old, *new;
+	  old = of->data;
+	  for (nf = new_files->head; nf; nf = nf->next) {
+	       new = nf->data;
+	       if (strcmp(old, new) == 0) {
+		    goto NOT_OBSOLETE;
+	       }
+	  }
+	  if (file_is_dir(old)) {
+	       continue;
+	  }
+	  owner = file_hash_get_file_owner(conf, old);
+	  if (owner != old_pkg) {
+	       /* in case obsolete file no longer belongs to old_pkg */
+	       continue;
+	  }
+ 
+	  /* old file is obsolete */
+	  opkg_message(conf, OPKG_INFO,
+		       "    removing obsolete file %s\n", old);
+	  if (!conf->noaction) {
+	       err = unlink(old);
+	       if (err) {
+		    opkg_message(conf, OPKG_ERROR, "    Warning: remove %s failed: %s\n", old,
+				 strerror(errno));
+	       }
+	  }
+
+     NOT_OBSOLETE:
+	  ;
+     }
+
+     pkg_free_installed_files(old_pkg);
+     pkg_free_installed_files(pkg);
+
+     return 0;
+}
+
+static int remove_obsolete_maintainer_scripts(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     int i;
+     int err = 0;
+     char *globpattern;
+     glob_t globbuf;
+     if (0) {
+	  if (!pkg->dest) {
+	       opkg_message(conf, OPKG_ERROR, "%s: no dest for package %s\n", __FUNCTION__, pkg->name);
+	       return -1;
+	  }
+	  sprintf_alloc(&globpattern, "%s/%s.*", pkg->dest->info_dir, pkg->name);
+	  err = glob(globpattern, 0, NULL, &globbuf);
+	  free(globpattern);
+	  if (err) {
+	       return err;
+	  }
+	  /* XXXX this should perhaps only remove the ones that are not overwritten in new package.  Jamey 11/11/2003 */
+	  for (i = 0; i < globbuf.gl_pathc; i++) {
+	       opkg_message(conf, OPKG_DEBUG, "Removing control file %s from old_pkg %s\n",
+			    globbuf.gl_pathv[i], old_pkg->name);
+	       if (!conf->noaction)
+		    unlink(globbuf.gl_pathv[i]);
+	  }
+	  globfree(&globbuf);
+     }
+     return err;
+}
+
+static int install_maintainer_scripts(opkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg)
+{
+     int ret;
+     char *prefix;
+
+     if (old_pkg)
+	  remove_obsolete_maintainer_scripts(conf, pkg, old_pkg);
+     sprintf_alloc(&prefix, "%s.", pkg->name);
+     ret = pkg_extract_control_files_to_dir_with_prefix(pkg,
+							pkg->dest->info_dir,
+							prefix);
+     free(prefix);
+     return ret;
+}
+
+static int remove_disappeared(opkg_conf_t *conf, pkg_t *pkg)
+{
+     /* DPKG_INCOMPATIBILITY:
+	This is a fairly sophisticated dpkg operation. Shall we
+	skip it? */
+     
+     /* Any packages all of whose files have been overwritten during the
+	installation, and which aren't required for dependencies, are
+	considered to have been removed. For each such package
+	1. disappearer's-postrm disappear overwriter overwriter-version
+	2. The package's maintainer scripts are removed
+	3. It is noted in the status database as being in a sane state,
+           namely not installed (any conffiles it may have are ignored,
+	   rather than being removed by dpkg). Note that disappearing
+	   packages do not have their prerm called, because dpkg doesn't
+	   know in advance that the package is going to vanish.
+     */
+     return 0;
+}
+
+static int install_data_files(opkg_conf_t *conf, pkg_t *pkg)
+{
+     int err;
+
+     /* opkg takes a slightly different approach to data file backups
+	than dpkg. Rather than removing backups at this point, we
+	actually do the data file installation now. See comments in
+	check_data_file_clashes() for more details. */
+    
+     opkg_message(conf, OPKG_INFO,
+		  "    extracting data files to %s\n", pkg->dest->root_dir);
+     err = pkg_extract_data_files_to_dir(pkg, pkg->dest->root_dir);
+     if (err) {
+	  return err;
+     }
+
+     /* XXX: BUG or FEATURE : We are actually loosing the Essential flag,
+        so we can't save ourself from removing important packages
+        At this point we (should) have extracted the .control file, so it
+        would be a good idea to reload the data in it, and set the Essential 
+        state in *pkg. From now on the Essential is back in status file and
+        we can protect again.
+        We should operate this way:
+        fopen the file ( pkg->dest->root_dir/pkg->name.control )
+        check for "Essential" in it 
+        set the value in pkg->essential.
+        This new routine could be useful also for every other flag
+        Pigi: 16/03/2004 */
+     set_flags_from_control(conf, pkg) ;
+     
+     opkg_message(conf, OPKG_DEBUG, "    Calling pkg_write_filelist from %s\n", __FUNCTION__);
+     err = pkg_write_filelist(conf, pkg);
+     if (err)
+	  return err;
+
+     /* XXX: FEATURE: opkg should identify any files which existed
+	before installation and which were overwritten, (see
+	check_data_file_clashes()). What it must do is remove any such
+	files from the filelist of the old package which provided the
+	file. Otherwise, if the old package were removed at some point
+	it would break the new package. Removing the new package will
+	also break the old one, but this cannot be helped since the old
+	package's file has already been deleted. This is the importance
+	of check_data_file_clashes(), and only allowing opkg to install
+	a clashing package with a user force. */
+
+     return 0;
+}
+
+static int resolve_conffiles(opkg_conf_t *conf, pkg_t *pkg)
+{
+     conffile_list_elt_t *iter;
+     conffile_t *cf;
+     char *cf_backup;
+
+    char *md5sum;
+
+    
+     if (conf->noaction) return 0;
+
+     for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+	  char *root_filename;
+	  cf = iter->data;
+	  root_filename = root_filename_alloc(conf, cf->name);
+
+	  /* Might need to initialize the md5sum for each conffile */
+	  if (cf->value == NULL) {
+	       cf->value = file_md5sum_alloc(root_filename);
+	  }
+
+	  if (!file_exists(root_filename)) {
+	       free(root_filename);
+	       continue;
+	  }
+
+	  cf_backup = backup_filename_alloc(root_filename);
+
+
+	  if (file_exists(cf_backup)) {
+ /* Let's compute md5 to test if files are changed */
+	      md5sum = file_md5sum_alloc(cf_backup);
+               if (strcmp( cf->value,md5sum) != 0 ) {
+	          if (conf->force_defaults
+		      || user_prefers_old_conffile(cf->name, cf_backup) ) {
+		       rename(cf_backup, root_filename);
+	          }
+	       }
+	       unlink(cf_backup);
+	       free(md5sum);
+	  }
+
+	  free(cf_backup);
+	  free(root_filename);
+     }
+
+     return 0;
+}
+
+static int user_prefers_old_conffile(const char *file_name, const char *backup)
+{
+     char *response;
+     const char *short_file_name;
+
+     short_file_name = strrchr(file_name, '/');
+     if (short_file_name) {
+	  short_file_name++;
+     } else {
+	  short_file_name = file_name;
+     }
+
+     while (1) {
+	  response = get_user_response("    Configuration file '%s'\n"
+				       "    ==> File on system created by you or by a script.\n"
+				       "    ==> File also in package provided by package maintainer.\n"
+				       "       What would you like to do about it ?  Your options are:\n"
+				       "        Y or I  : install the package maintainer's version\n"
+				       "        N or O  : keep your currently-installed version\n"
+				       "          D     : show the differences between the versions (if diff is installed)\n"
+				       "     The default action is to keep your current version.\n"
+				       "    *** %s (Y/I/N/O/D) [default=N] ? ", file_name, short_file_name);
+	  if (strcmp(response, "y") == 0
+	      || strcmp(response, "i") == 0
+	      || strcmp(response, "yes") == 0) {
+	       free(response);
+	       return 0;
+	  }
+
+	  if (strcmp(response, "d") == 0) {
+	       char *cmd;
+
+	       free(response);
+	       /* XXX: BUG rewrite to use exec or busybox's internal diff */
+	       sprintf_alloc(&cmd, "diff -u %s %s", backup, file_name);
+	       xsystem(cmd);
+	       free(cmd);
+	       printf("    [Press ENTER to continue]\n");
+	       response = file_read_line_alloc(stdin);
+	       free(response);
+	       continue;
+	  }
+
+	  free(response);
+	  return 1;
+     }
+}
+
+/* XXX: CLEANUP: I'd like to move all of the code for
+   creating/cleaning pkg->tmp_unpack_dir directly into pkg.c. (Then,
+   it would make sense to cleanup pkg->tmp_unpack_dir directly from
+   pkg_deinit for example). */
+static int cleanup_temporary_files(opkg_conf_t *conf, pkg_t *pkg)
+{
+     DIR *tmp_dir;
+     struct dirent *dirent;
+     char *tmp_file;
+
+#ifdef OPKG_DEBUG_NO_TMP_CLEANUP
+#error
+     opkg_message(conf, OPKG_DEBUG,
+		  "%s: Not cleaning up %s since opkg compiled with OPKG_DEBUG_NO_TMP_CLEANUP\n",
+		  __FUNCTION__, pkg->tmp_unpack_dir);
+     return 0;
+#endif
+
+     if (pkg->tmp_unpack_dir && file_is_dir(pkg->tmp_unpack_dir)) {
+	  tmp_dir = opendir(pkg->tmp_unpack_dir);
+	  if (tmp_dir) {
+	       while (1) {
+		    dirent = readdir(tmp_dir);
+		    if (dirent == NULL) {
+			 break;
+		    }
+		    sprintf_alloc(&tmp_file, "%s/%s",
+				  pkg->tmp_unpack_dir, dirent->d_name);
+		    if (! file_is_dir(tmp_file)) {
+			 unlink(tmp_file);
+		    }
+		    free(tmp_file);
+	       }
+	       closedir(tmp_dir);
+	       rmdir(pkg->tmp_unpack_dir);
+	       free(pkg->tmp_unpack_dir);
+	       pkg->tmp_unpack_dir = NULL;
+	  }
+     }
+
+     opkg_message(conf, OPKG_INFO, "cleanup_temporary_files: pkg=%s local_filename=%s tmp_dir=%s\n",
+		  pkg->name, pkg->local_filename, conf->tmp_dir);
+     if (pkg->local_filename && strncmp(pkg->local_filename, conf->tmp_dir, strlen(conf->tmp_dir)) == 0) {
+	  unlink(pkg->local_filename);
+	  free(pkg->local_filename);
+	  pkg->local_filename = NULL;
+     }
+
+     return 0;
+}
+
+static char *backup_filename_alloc(const char *file_name)
+{
+     char *backup;
+
+     sprintf_alloc(&backup, "%s%s", file_name, OPKG_BACKUP_SUFFIX);
+
+     return backup;
+}
+
+int backup_make_backup(opkg_conf_t *conf, const char *file_name)
+{
+     int err;
+     char *backup;
+    
+     backup = backup_filename_alloc(file_name);
+     err = file_copy(file_name, backup);
+     if (err) {
+	  opkg_message(conf, OPKG_ERROR,
+		       "%s: Failed to copy %s to %s\n",
+		       __FUNCTION__, file_name, backup);
+     }
+
+     free(backup);
+
+     return err;
+}
+
+static int backup_exists_for(const char *file_name)
+{
+     int ret;
+     char *backup;
+
+     backup = backup_filename_alloc(file_name);
+
+     ret = file_exists(backup);
+
+     free(backup);
+
+     return ret;
+}
+
+static int backup_remove(const char *file_name)
+{
+     char *backup;
+
+     backup = backup_filename_alloc(file_name);
+     unlink(backup);
+     free(backup);
+
+     return 0;
+}
+
+
+
+#ifdef CONFIG_OPKG_PROCESS_ACTIONS
+
+int opkg_remove_packages(opkg_conf_t *conf, pkg_vec_t *pkgs_to_remove) 
+{
+     /* first, remove the packages that need removing */
+     for (i = 0 ; i < pkgs_to_remove->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_remove->pkgs[i];
+	  err = opkg_remove_pkg(conf, pkg,0);
+	  if (err) return err;
+     }
+     return 0;
+}
+
+int opkg_process_actions_sanity_check(opkg_conf_t *conf, pkg_vec_t *pkgs_to_remove, pkg_vec_t *pkgs_superseded, pkg_vec_t *pkgs_to_install)
+{
+     int i;
+     /* now one more pass checking on the ones that need to be installed */
+     for (i = 0 ; i < pkgs_to_install->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_install->pkgs[i];
+	  if (pkg->dest == NULL)
+	       pkg->dest = conf->default_dest;
+
+	  pkg->state_want = SW_INSTALL;
+
+	  /* Abhaya: conflicts check */
+	  err = check_conflicts_for(conf, pkg);
+	  if (err) { return err; }
+     }
+     return 0;
+}
+
+int opkg_process_actions_unpack_packages(opkg_conf_t *conf, pkg_vec_t *pkgs_to_remove, pkg_vec_t *pkgs_to_install)
+{
+     int i;
+     /* now one more pass checking on the ones that need to be installed */
+     for (i = 0 ; i < pkgs_to_install->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_install->pkgs[i];
+
+	  /* XXX: FEATURE: Need to really support Provides/Replaces: here at some point */
+	  pkg_vec_t *replacees = pkg_vec_alloc();
+	  pkg_get_installed_replacees(conf, pkg, replacees);
+
+	  /* XXX: BUG: we really should treat replacement more like an upgrade
+	   *      Instead, we're going to remove the replacees 
+	   */
+	  err = pkg_remove_installed_replacees(conf, replacees);
+	  if (err) return err;
+	  pkg->state_flag |= SF_REMOVED_REPLACEES;
+     }
+     return 0;
+}
+
+int opkg_process_actions_unpack_packages(opkg_conf_t *conf, pkg_vec_t *pkgs_to_remove, pkg_vec_t *pkgs_to_install)
+{
+     int i;
+     /* now one more pass checking on the ones that need to be installed */
+     for (i = 0 ; i < pkgs_to_install->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_install->pkgs[i];
+	  if (pkg->local_filename == NULL) {
+	       err = opkg_download_pkg(conf, pkg, conf->tmp_dir);
+	       if (err) {
+		    opkg_message(conf, OPKG_ERROR,
+				 "Failed to download %s. Perhaps you need to run 'opkg update'?\n",
+				 pkg->name);
+		    return err;
+	       }
+	  }
+	  if (pkg->tmp_unpack_dir == NULL) {
+	       err = unpack_pkg_control_files(conf, pkg);
+	       if (err) return err;
+	  }
+     }
+     return 0;
+}
+
+int opkg_process_actions_prerm(opkg_conf_t *conf, pkg_vec_t *pkgs_to_install)
+{
+     int i;
+     /* now one more pass checking on the ones that need to be installed */
+     for (i = 0 ; i < pkgs_to_install->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_install->pkgs[i];
+	  pkg_t *old_pkg = pkg->old_pkg;
+
+	  err = prerm_upgrade_old_pkg(conf, pkg, old_pkg);
+	  if (err) return err;
+
+	  err = prerm_deconfigure_conflictors(conf, pkg, replacees);
+	  if (err) return err;
+
+	  err = preinst_configure(conf, pkg, old_pkg);
+	  if (err) return err;
+
+	  err = backup_modified_conffiles(conf, pkg, old_pkg);
+	  if (err) return err;
+
+	  err = postrm_upgrade_old_pkg(conf, pkg, old_pkg);
+	  if (err) return err;
+     }
+     return 0;
+}
+
+int opkg_process_actions_install(opkg_conf_t *conf, pkg_vec_t *pkgs_to_install)
+{
+     int i;
+     /* now one more pass checking on the ones that need to be installed */
+     for (i = 0 ; i < pkgs_to_install->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_install->pkgs[i];
+	  pkg_t *old_pkg = pkg->old_pkg;
+
+	  if (old_pkg) {
+	       old_pkg->state_want = SW_DEINSTALL;
+
+	       if (old_pkg->state_flag & SF_NOPRUNE) {
+		    opkg_message(conf, OPKG_INFO,
+				 "  not removing obsolesced files because package marked noprune\n");
+	       } else {
+		    opkg_message(conf, OPKG_INFO,
+				 "  removing obsolesced files\n");
+		    remove_obsolesced_files(conf, pkg, old_pkg);
+	       }
+	  }
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  installing maintainer scripts\n");
+	  install_maintainer_scripts(conf, pkg, old_pkg);
+
+	  /* the following just returns 0 */
+	  remove_disappeared(conf, pkg);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  installing data files\n");
+	  install_data_files(conf, pkg);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  resolving conf files\n");
+	  resolve_conffiles(conf, pkg);
+
+	  pkg->state_status = SS_UNPACKED;
+
+	  if (old_pkg) {
+	       old_pkg->state_status = SS_NOT_INSTALLED;
+	  }
+
+	  time(&pkg->installed_time);
+
+	  opkg_message(conf, OPKG_INFO,
+		       "  cleanup temp files\n");
+	  cleanup_temporary_files(conf, pkg);
+
+	  if (pkg->parent)
+	       pkg->parent->state_status = pkg->state_status;
+     }
+     return 0;
+}
+
+int opkg_process_actions_unwind_prerm(opkg_conf_t *conf, pkg_vec_t *pkgs_to_install)
+{
+     int i;
+     /* now one more pass checking on the ones that need to be installed */
+     for (i = 0 ; i < pkgs_to_install->len; i++ ) {
+	  pkg_t *pkg = pkgs_to_install->pkgs[i];
+	  pkg_t *old_pkg = pkg->old_pkg;
+
+	  if (old_pkg) {
+	       if (old_pkg->state_flags & SF_POSTRM_UPGRADE)
+		    postrm_upgrade_old_pkg_unwind(conf, pkg, old_pkg);
+	       if (old_pkg->state_flags & SF_CHECK_DATA_FILE_CLASHES)
+		    check_data_file_clashes_unwind(conf, pkg, old_pkg);
+	       if (old_pkg->state_flags & SF_BACKUP_MODIFIED_CONFFILES)
+		    backup_modified_conffiles_unwind(conf, pkg, old_pkg);
+	       if (old_pkg->state_flags & SF_PREINST_CONFIGURE)
+		    preinst_configure_unwind(conf, pkg, old_pkg);
+	       if (old_pkg->state_flags & SF_DECONFIGURE_CONFLICTORS)
+		    prerm_deconfigure_conflictors_unwind(conf, pkg, replacees);
+	       if (old_pkg->state_flags & SF_PRERM_UPGRADE)
+		    prerm_upgrade_old_pkg_unwind(conf, pkg, old_pkg);
+
+	       if (old_pkg->state_flags & SF_REMOVED_REPLACEES)
+		    remove_installed_replacees_unwind(conf, pkg, old_pkg);
+
+	  }
+     }
+     return 0;
+}
+
+/* 
+ * Perform all the actions.
+ *
+ * pkgs_to_remove are packages marked for removal.
+ * pkgs_superseded are the old packages being replaced by upgrades.
+ *
+ * Assumes pkgs_to_install includes all dependences, recursively, sorted in installable order.
+ */
+int opkg_process_actions(opkg_conf_t *conf, pkg_vec_t *pkgs_to_remove, pkg_vec_t *pkgs_superseded, pkg_vec_t *pkgs_to_install)
+{
+     int err;
+     int i;
+
+     err = opkg_remove_packages(conf, pkgs_to_remove);
+     if (err) return err;
+
+     err = opkg_process_actions_sanity_check(conf, pkgs_superseded, pkgs_to_install);
+     if (err) return err;
+
+     err = opkg_process_actions_remove_replacees(conf, pkgs_to_install);
+     if (err) goto UNWIND;
+
+     /* @@@@ look at opkg_install_pkg for handling replacements */
+     err = opkg_process_actions_unpack_packages(conf, pkgs_to_install);
+     if (err) goto UNWIND;
+
+     /* 
+      * Now that we have the packages unpacked, we can look for data
+      * file clashes.  First, we mark the files from the superseded
+      * packages as obsolete.  Then we scan the files in
+      * pkgs_to_install, and only complain about clashes with
+      * non-obsolete files.
+      */
+
+     err = opkg_process_actions_check_data_file_clashes(conf, pkgs_superseded, pkgs_to_install);
+     if (err) goto UNWIND;
+
+     /* this was before checking data file clashes */
+     err = opkg_process_actions_prerm(conf, pkgs_superseded, pkgs_to_install);
+     if (err) goto UNWIND;
+
+     /* point of no return: no unwinding after this */
+     err = opkg_process_actions_install(conf, pkgs_to_install);
+     if (err) return err;
+
+     opkg_message(conf, OPKG_INFO, "Done.\n");
+     return 0;
+
+ UNWIND:
+     opkg_process_actions_unwind(conf, pkgs_to_install);
+
+     opkg_message(conf, OPKG_INFO,
+		  "  cleanup temp files\n");
+     cleanup_temporary_files(conf, pkg);
+
+     opkg_message(conf, OPKG_INFO,
+		  "Failed.\n");
+     return err;
+}
+
+#endif
diff --git a/libopkg/opkg_install.h b/libopkg/opkg_install.h
new file mode 100644
index 0000000..8d064ac
--- /dev/null
+++ b/libopkg/opkg_install.h
@@ -0,0 +1,35 @@
+/* opkg_install.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_INSTALL_H
+#define OPKG_INSTALL_H
+
+#include "pkg.h"
+#include "opkg_conf.h"
+
+opkg_error_t opkg_install_by_name(opkg_conf_t *conf, const char *pkg_name);
+opkg_error_t opkg_install_multi_by_name(opkg_conf_t *conf, const char *pkg_name);
+int opkg_install_from_file(opkg_conf_t *conf, const char *filename);
+int opkg_install_pkg(opkg_conf_t *conf, pkg_t *pkg,int from_upgrading);
+int satisfy_dependencies_for(opkg_conf_t *conf, pkg_t *pkg);
+
+int opkg_satisfy_all_dependences(opkg_conf_t *conf);
+
+int pkg_mark_dependencies_for_installation(opkg_conf_t *conf, pkg_t *pkg_name, pkg_vec_t *pkgs_needed);
+int name_mark_dependencies_for_installation(opkg_conf_t *conf, const char *pkg_name, pkg_vec_t *pkgs_needed);
+
+#endif
diff --git a/libopkg/opkg_message.c b/libopkg/opkg_message.c
new file mode 100644
index 0000000..38f16df
--- /dev/null
+++ b/libopkg/opkg_message.c
@@ -0,0 +1,61 @@
+/* opkg_message.c - the itsy package management system
+
+   Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+
+#include "opkg.h"
+#include "opkg_conf.h"
+#include "opkg_message.h"
+
+#ifndef OPKG_LIB
+
+void
+opkg_message (opkg_conf_t * conf, message_level_t level, char *fmt, ...)
+{
+	va_list ap;
+
+	if (conf && (conf->verbosity < level))
+	{
+		return;
+	}
+	else
+	{
+
+		va_start (ap, fmt);
+		vprintf (fmt, ap);
+		va_end (ap);
+	}
+}
+
+#else
+
+#include "libopkg.h"
+
+//#define opkg_message(conf, level, fmt, arg...) opkg_cb_message(conf, level, fmt, ## arg)
+
+void
+opkg_message (opkg_conf_t * conf, message_level_t level, char *fmt, ...)
+{
+	va_list ap;
+	char ts[256];
+
+	if (opkg_cb_message)
+	{
+		va_start (ap, fmt);
+		vsnprintf (ts,256,fmt, ap);
+		va_end (ap);
+		opkg_cb_message(conf,level,ts);
+	}
+}
+#endif
diff --git a/libopkg/opkg_message.h b/libopkg/opkg_message.h
new file mode 100644
index 0000000..86f895b
--- /dev/null
+++ b/libopkg/opkg_message.h
@@ -0,0 +1,32 @@
+/* opkg_message.h - the itsy package management system
+
+   Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef _OPKG_MESSAGE_H_
+#define _OPKG_MESSAGE_H_
+
+#include "opkg.h"
+#include "opkg_conf.h"
+
+typedef enum {
+     OPKG_ERROR,	/* error conditions */
+     OPKG_NOTICE,	/* normal but significant condition */
+     OPKG_INFO,		/* informational message */
+     OPKG_DEBUG,	/* debug level message */
+     OPKG_DEBUG2,	/* more debug level message */
+} message_level_t;
+
+extern void opkg_message(opkg_conf_t *conf, message_level_t level, char *fmt, ...);
+
+#endif /* _OPKG_MESSAGE_H_ */
diff --git a/libopkg/opkg_remove.c b/libopkg/opkg_remove.c
new file mode 100644
index 0000000..eb7825a
--- /dev/null
+++ b/libopkg/opkg_remove.c
@@ -0,0 +1,383 @@
+/* opkg_remove.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include "opkg_message.h"
+
+#include <glob.h>
+
+#include "opkg_remove.h"
+
+#include "file_util.h"
+#include "sprintf_alloc.h"
+#include "str_util.h"
+
+#include "opkg_cmd.h"
+
+/*
+ * Returns number of the number of packages depending on the packages provided by this package.
+ * Every package implicitly provides itself.
+ */
+int pkg_has_installed_dependents(opkg_conf_t *conf, abstract_pkg_t *parent_apkg, pkg_t *pkg, abstract_pkg_t *** pdependents)
+{
+     int nprovides = pkg->provides_count;
+     abstract_pkg_t **provides = pkg->provides;
+     int n_installed_dependents = 0;
+     int i;
+     for (i = 0; i <= nprovides; i++) {
+	  abstract_pkg_t *providee = provides[i];
+	  abstract_pkg_t **dependers = providee->depended_upon_by;
+	  abstract_pkg_t *dep_ab_pkg;
+	  if (dependers == NULL)
+	       continue;
+	  while ((dep_ab_pkg = *dependers++) != NULL) {
+	       if (dep_ab_pkg->state_status == SS_INSTALLED){
+		    n_installed_dependents++;
+               }
+	  }
+
+     }
+     /* if caller requested the set of installed dependents */
+     if (pdependents) {
+	  int p = 0;
+	  abstract_pkg_t **dependents = (abstract_pkg_t **)malloc((n_installed_dependents+1)*sizeof(abstract_pkg_t *));
+
+          if ( dependents == NULL ){
+              fprintf(stderr,"%s Unable to allocate memory. REPORT THIS BUG IN BUGZILLA PLEASE\n", __FUNCTION__);
+              return -1;  
+          }
+
+	  *pdependents = dependents;
+	  for (i = 0; i <= nprovides; i++) {
+	       abstract_pkg_t *providee = provides[i];
+	       abstract_pkg_t **dependers = providee->depended_upon_by;
+	       abstract_pkg_t *dep_ab_pkg;
+	       if (dependers == NULL)
+		    continue;
+	       while ((dep_ab_pkg = *dependers++) != NULL) {
+		    if (dep_ab_pkg->state_status == SS_INSTALLED && !(dep_ab_pkg->state_flag & SF_MARKED)) {
+			 dependents[p++] = dep_ab_pkg;
+			 dep_ab_pkg->state_flag |= SF_MARKED;
+		    }
+	       }
+	  }
+	  dependents[p] = NULL;
+	  /* now clear the marks */
+	  for (i = 0; i < p; i++) {
+	       abstract_pkg_t *dep_ab_pkg = dependents[i];
+	       dep_ab_pkg->state_flag &= ~SF_MARKED;
+	  }
+     }
+     return n_installed_dependents;
+}
+
+int opkg_remove_dependent_pkgs (opkg_conf_t *conf, pkg_t *pkg, abstract_pkg_t **dependents)
+{
+    int i;
+    int a;
+    int count;
+    pkg_vec_t *dependent_pkgs = pkg_vec_alloc();
+    abstract_pkg_t * ab_pkg;
+
+    if((ab_pkg = pkg->parent) == NULL){
+	fprintf(stderr, "%s: unable to get dependent pkgs. pkg %s isn't in hash table\n",
+		__FUNCTION__, pkg->name);
+	return 0;
+    }
+    
+    if (dependents == NULL)
+	    return 0;
+
+    // here i am using the dependencies_checked
+    if (ab_pkg->dependencies_checked == 2) // variable to make out whether this package
+	return 0;			   // has already been encountered in the process
+	                                   // of marking packages for removal - Karthik
+    ab_pkg->dependencies_checked = 2;
+
+    i = 0;
+    count = 1;
+    while (dependents [i] != NULL) {
+        abstract_pkg_t *dep_ab_pkg = dependents[i];
+	
+	if (dep_ab_pkg->dependencies_checked == 2){
+	    i++;
+	    continue;	
+        }
+        if (dep_ab_pkg->state_status == SS_INSTALLED) {
+            for (a = 0; a < dep_ab_pkg->pkgs->len; a++) {
+                pkg_t *dep_pkg = dep_ab_pkg->pkgs->pkgs[a];
+                if (dep_pkg->state_status == SS_INSTALLED) {
+                    pkg_vec_insert(dependent_pkgs, dep_pkg);
+                    count++;
+                }
+            }
+        }
+	i++;
+	/* 1 - to keep track of visited ab_pkgs when checking for possiblility of a broken removal of pkgs.
+	 * 2 - to keep track of pkgs whose deps have been checked alrdy  - Karthik */	
+    }
+    
+    if (count == 1)
+	    return 0;
+    
+    
+    for (i = 0; i < dependent_pkgs->len; i++) {
+        int err = opkg_remove_pkg(conf, dependent_pkgs->pkgs[i],0);
+        if (err)
+            return err;
+    }
+    return 0;
+}
+
+static int user_prefers_removing_dependents(opkg_conf_t *conf, abstract_pkg_t *abpkg, pkg_t *pkg, abstract_pkg_t **dependents)
+{
+    abstract_pkg_t *dep_ab_pkg;
+    opkg_message(conf, OPKG_ERROR, "Package %s is depended upon by packages:\n", pkg->name);
+    while ((dep_ab_pkg = *dependents++) != NULL) {
+	 if (dep_ab_pkg->state_status == SS_INSTALLED)
+	      opkg_message(conf, OPKG_ERROR, "\t%s\n", dep_ab_pkg->name);
+    }
+    opkg_message(conf, OPKG_ERROR, "These might cease to work if package %s is removed.\n\n", pkg->name);
+    opkg_message(conf, OPKG_ERROR, "");
+    opkg_message(conf, OPKG_ERROR, "You can force removal of this package with -force-depends.\n");
+    opkg_message(conf, OPKG_ERROR, "You can force removal of this package and its dependents\n");
+    opkg_message(conf, OPKG_ERROR, "with -force-removal-of-dependent-packages or -recursive\n");
+    opkg_message(conf, OPKG_ERROR, "or by setting option force_removal_of_dependent_packages\n");
+    opkg_message(conf, OPKG_ERROR, "in opkg.conf.\n");
+    return 0;
+}
+
+int opkg_remove_pkg(opkg_conf_t *conf, pkg_t *pkg,int message)
+{
+/* Actually, when "message == 1" I have been called from an upgrade, and not from a normal remove
+   thus I wan't check for essential, as I'm upgrading.
+   I hope it won't break anything :) 
+*/
+     int err;
+     abstract_pkg_t *parent_pkg = NULL;
+	
+     if (pkg->essential && !message) {
+	  if (conf->force_removal_of_essential_packages) {
+	       fprintf(stderr, "WARNING: Removing essential package %s under your coercion.\n"
+		       "\tIf your system breaks, you get to keep both pieces\n",
+		       pkg->name);
+	  } else {
+	       fprintf(stderr, "ERROR: Refusing to remove essential package %s.\n"
+		       "\tRemoving an essential package may lead to an unusable system, but if\n"
+		       "\tyou enjoy that kind of pain, you can force opkg to proceed against\n"
+		       "\tits will with the option: -force-removal-of-essential-packages\n",
+		       pkg->name);
+	       return OPKG_PKG_IS_ESSENTIAL;
+	  }
+     }
+
+     if ((parent_pkg = pkg->parent) == NULL)
+	  return 0;
+
+     /* only attempt to remove dependent installed packages if
+      * force_depends is not specified or the package is being
+      * replaced.
+      */
+     if (!conf->force_depends
+	 && !(pkg->state_flag & SF_REPLACE)) {
+	  abstract_pkg_t **dependents;
+	  int has_installed_dependents = 
+	       pkg_has_installed_dependents(conf, parent_pkg, pkg, &dependents);
+
+	  if (has_installed_dependents) {
+	       /*
+		* if this package is depended up by others, then either we should
+		* not remove it or we should remove it and all of its dependents 
+		*/
+
+	       if (!conf->force_removal_of_dependent_packages
+		   && !user_prefers_removing_dependents(conf, parent_pkg, pkg, dependents)) {
+		    return OPKG_PKG_HAS_DEPENDENTS;
+	       }
+
+	       /* remove packages depending on this package - Karthik */
+	       err = opkg_remove_dependent_pkgs (conf, pkg, dependents);
+	       free(dependents);
+	       if (err) return err;
+	  }
+     }
+
+     if ( message==0 ){
+         printf("Removing package %s from %s...\n", pkg->name, pkg->dest->name);
+         fflush(stdout);
+     }
+     pkg->state_flag |= SF_FILELIST_CHANGED;
+
+     pkg->state_want = SW_DEINSTALL;
+     opkg_state_changed++;
+
+     pkg_run_script(conf, pkg, "prerm", "remove");
+
+     /* DPKG_INCOMPATIBILITY: dpkg is slightly different here. It
+	maintains an empty filelist rather than deleting it. That seems
+	like a big pain, and I don't see that that should make a big
+	difference, but for anyone who wants tighter compatibility,
+	feel free to fix this. */
+     remove_data_files_and_list(conf, pkg);
+
+     pkg_run_script(conf, pkg, "postrm", "remove");
+
+     remove_maintainer_scripts_except_postrm(conf, pkg);
+
+     /* Aman Gupta - Since opkg is made for handheld devices with limited
+      * space, it doesn't make sense to leave extra configurations, files, 
+      * and maintainer scripts left around. So, we make remove like purge, 
+      * and take out all the crap :) */
+
+     remove_postrm(conf, pkg);
+     pkg->state_status = SS_NOT_INSTALLED;
+
+     if (parent_pkg) 
+	  parent_pkg->state_status = SS_NOT_INSTALLED;
+
+     return 0;
+}
+
+int opkg_purge_pkg(opkg_conf_t *conf, pkg_t *pkg)
+{
+    opkg_remove_pkg(conf, pkg,0);
+    return 0;
+}
+
+int remove_data_files_and_list(opkg_conf_t *conf, pkg_t *pkg)
+{
+     str_list_t installed_dirs;
+     str_list_t *installed_files;
+     str_list_elt_t *iter;
+     char *file_name;
+     conffile_t *conffile;
+     int removed_a_dir;
+     pkg_t *owner;
+
+     str_list_init(&installed_dirs);
+     installed_files = pkg_get_installed_files(pkg);
+
+     for (iter = installed_files->head; iter; iter = iter->next) {
+	  file_name = iter->data;
+
+	  if (file_is_dir(file_name)) {
+	       str_list_append(&installed_dirs, strdup(file_name));
+	       continue;
+	  }
+
+	  conffile = pkg_get_conffile(pkg, file_name);
+	  if (conffile) {
+	       /* XXX: QUESTION: Is this right? I figure we only need to
+		  save the conffile if it has been modified. Is that what
+		  dpkg does? Or does dpkg preserve all conffiles? If so,
+		  this seems like a better thing to do to conserve
+		  space. */
+	       if (conffile_has_been_modified(conf, conffile)) {
+		    printf("  not deleting modified conffile %s\n", file_name);
+		    fflush(stdout);
+		    continue;
+	       }
+	  }
+
+	  opkg_message(conf, OPKG_INFO, "  deleting %s (noaction=%d)\n", file_name, conf->noaction);
+	  if (!conf->noaction)
+	       unlink(file_name);
+     }
+
+     if (!conf->noaction) {
+	  do {
+	       removed_a_dir = 0;
+	       for (iter = installed_dirs.head; iter; iter = iter->next) {
+		    file_name = iter->data;
+	    
+		    if (rmdir(file_name) == 0) {
+			 opkg_message(conf, OPKG_INFO, "  deleting %s\n", file_name);
+			 removed_a_dir = 1;
+			 str_list_remove(&installed_dirs, &iter);
+		    }
+	       }
+	  } while (removed_a_dir);
+     }
+
+     pkg_free_installed_files(pkg);
+     /* We have to remove the file list now, so that
+	find_pkg_owning_file does not always just report this package */
+     pkg_remove_installed_files_list(conf, pkg);
+
+     /* Don't print warning for dirs that are provided by other packages */
+     for (iter = installed_dirs.head; iter; iter = iter->next) {
+	  file_name = iter->data;
+
+	  owner = file_hash_get_file_owner(conf, file_name);
+	  if (owner) {
+	       free(iter->data);
+	       iter->data = NULL;
+	       str_list_remove(&installed_dirs, &iter);
+	  }
+     }
+
+     /* cleanup */
+     for (iter = installed_dirs.head; iter; iter = iter->next) {
+	  free(iter->data);
+	  iter->data = NULL;
+     }
+     str_list_deinit(&installed_dirs);
+
+     return 0;
+}
+
+int remove_maintainer_scripts_except_postrm(opkg_conf_t *conf, pkg_t *pkg)
+{
+    int i, err;
+    char *globpattern;
+    glob_t globbuf;
+    
+    if (conf->noaction) return 0;
+
+    sprintf_alloc(&globpattern, "%s/%s.*",
+		  pkg->dest->info_dir, pkg->name);
+    err = glob(globpattern, 0, NULL, &globbuf);
+    free(globpattern);
+    if (err) {
+	return 0;
+    }
+
+    for (i = 0; i < globbuf.gl_pathc; i++) {
+	if (str_ends_with(globbuf.gl_pathv[i], ".postrm")) {
+	    continue;
+	}
+        opkg_message(conf, OPKG_INFO, "  deleting %s\n", globbuf.gl_pathv[i]);
+	unlink(globbuf.gl_pathv[i]);
+    }
+    globfree(&globbuf);
+
+    return 0;
+}
+
+int remove_postrm(opkg_conf_t *conf, pkg_t *pkg)
+{
+    char *postrm_file_name;
+
+    if (conf->noaction) return 0;
+
+    sprintf_alloc(&postrm_file_name, "%s/%s.postrm",
+		  pkg->dest->info_dir, pkg->name);
+    unlink(postrm_file_name);
+    free(postrm_file_name);
+
+    return 0;
+}
diff --git a/libopkg/opkg_remove.h b/libopkg/opkg_remove.h
new file mode 100644
index 0000000..bc96f32
--- /dev/null
+++ b/libopkg/opkg_remove.h
@@ -0,0 +1,33 @@
+/* opkg_remove.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_REMOVE_H
+#define OPKG_REMOVE_H
+
+#include "pkg.h"
+#include "opkg_conf.h"
+
+int opkg_remove_pkg(opkg_conf_t *conf, pkg_t *pkg,int message);
+int opkg_purge_pkg(opkg_conf_t *conf, pkg_t *pkg);
+int possible_broken_removal_of_packages (opkg_conf_t *conf, pkg_t *pkg);
+int pkg_has_installed_dependents(opkg_conf_t *conf, abstract_pkg_t *parent_apkg, pkg_t *pkg, abstract_pkg_t *** pdependents);
+int remove_data_files_and_list(opkg_conf_t *conf, pkg_t *pkg);
+int remove_maintainer_scripts_except_postrm (opkg_conf_t *conf, pkg_t *pkg);
+int remove_postrm (opkg_conf_t *conf, pkg_t *pkg);
+
+
+#endif
diff --git a/libopkg/opkg_state.c b/libopkg/opkg_state.c
new file mode 100644
index 0000000..2cc8594
--- /dev/null
+++ b/libopkg/opkg_state.c
@@ -0,0 +1,72 @@
+/* opkg_state.c - the opkg package management system
+
+   Thomas Wood <thomas@openedhand.com>
+
+   Copyright (C) 2008 by OpenMoko Inc
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "libopkg.h"
+#include "opkg_state.h"
+
+
+static char *state_strings[] =
+{
+  "None",
+  "Downloading Package",
+  "Installing Package",
+  "Configuring Package",
+  "Upgrading Package",
+  "Removing Package",
+  "Downloading Repository",
+  "Verifying Repository Signature"
+};
+
+
+
+opkg_state_changed_callback opkg_cb_state_changed = NULL;
+
+static opkg_state_t opkg_state = 0;
+static char *opkg_state_data = NULL;
+
+void
+opkg_set_current_state (opkg_state_t state, const char *data)
+{
+  if (opkg_state_data)
+    free (opkg_state_data);
+  if (data)
+  {
+    opkg_state_data = malloc (strlen (data));
+    strcpy (opkg_state_data, data);
+  }
+  else
+  {
+    opkg_state_data = NULL;
+  }
+
+  opkg_state = state;
+
+  if (opkg_cb_state_changed)
+  {
+    opkg_cb_state_changed (opkg_state, opkg_state_data);
+  }
+
+
+  printf ("opkg state set to %s: %s\n", state_strings[state], data);
+}
+
+void
+opkg_get_current_state (opkg_state_t *state, const char **data)
+{
+  *state = opkg_state;
+  *data = opkg_state_data;
+}
diff --git a/libopkg/opkg_state.h b/libopkg/opkg_state.h
new file mode 100644
index 0000000..2718569
--- /dev/null
+++ b/libopkg/opkg_state.h
@@ -0,0 +1,36 @@
+/* opkg_state.c - the opkg package management system
+
+   Thomas Wood <thomas@openedhand.com>
+
+   Copyright (C) 2008 by OpenMoko Inc
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_STATE_H
+#define OPKG_STATE_H
+
+typedef enum _opkg_state {
+  OPKG_STATE_NONE,
+  OPKG_STATE_DOWNLOADING_PKG,
+  OPKG_STATE_INSTALLING_PKG,
+  OPKG_STATE_CONFIGURING_PKG,
+  OPKG_STATE_UPGRADING_PKG,
+  OPKG_STATE_REMOVING_PKG,
+  OPKG_STATE_DOWNLOADING_REPOSITORY,
+  OPKG_STATE_VERIFYING_REPOSITORY_SIGNATURE
+} opkg_state_t;
+
+
+void opkg_set_current_state (opkg_state_t state, const char *data);
+
+
+#endif /* OPKG_STATE_H */
diff --git a/libopkg/opkg_upgrade.c b/libopkg/opkg_upgrade.c
new file mode 100644
index 0000000..b0b047f
--- /dev/null
+++ b/libopkg/opkg_upgrade.c
@@ -0,0 +1,77 @@
+/* opkg_upgrade.c - the itsy package management system
+
+   Carl D. Worth
+   Copyright (C) 2001 University of Southern California
+
+   Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include "opkg_install.h"
+#include "opkg_message.h"
+
+int opkg_upgrade_pkg(opkg_conf_t *conf, pkg_t *old)
+{
+     pkg_t *new;
+     int cmp;
+     char *old_version, *new_version;
+
+     if (old->state_flag & SF_HOLD) {
+          opkg_message(conf, OPKG_NOTICE,
+                       "Not upgrading package %s which is marked "
+                       "hold (flags=%#x)\n", old->name, old->state_flag);
+          return 0;
+     }
+
+     new = pkg_hash_fetch_best_installation_candidate_by_name(conf, old->name);
+     if (new == NULL) {
+          old_version = pkg_version_str_alloc(old);
+          opkg_message(conf, OPKG_NOTICE,
+                       "Assuming locally installed package %s (%s) "
+                       "is up to date.\n", old->name, old_version);
+          free(old_version);
+          return 0;
+     }
+          
+     old_version = pkg_version_str_alloc(old);
+     new_version = pkg_version_str_alloc(new);
+               
+     cmp = pkg_compare_versions(old, new);
+     opkg_message(conf, OPKG_DEBUG,
+                  "comparing visible versions of pkg %s:"
+                  "\n\t%s is installed "
+                  "\n\t%s is available "
+                  "\n\t%d was comparison result\n",
+                  old->name, old_version, new_version, cmp);
+     if (cmp == 0) {
+          opkg_message(conf, OPKG_INFO,
+                       "Package %s (%s) installed in %s is up to date.\n",
+                       old->name, old_version, old->dest->name);
+          free(old_version);
+          free(new_version);
+          return 0;
+     } else if (cmp > 0) {
+          opkg_message(conf, OPKG_NOTICE,
+                       "Not downgrading package %s on %s from %s to %s.\n",
+                       old->name, old->dest->name, old_version, new_version);
+          free(old_version);
+          free(new_version);
+          return 0;
+     } else if (cmp < 0) {
+          new->dest = old->dest;
+          old->state_want = SW_DEINSTALL;
+     }
+
+     new->state_flag |= SF_USER;
+     return opkg_install_pkg(conf, new,1);
+}
diff --git a/libopkg/opkg_upgrade.h b/libopkg/opkg_upgrade.h
new file mode 100644
index 0000000..5022df4
--- /dev/null
+++ b/libopkg/opkg_upgrade.h
@@ -0,0 +1,18 @@
+/* opkg_upgrade.c - the itsy package management system
+
+   Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+int opkg_upgrade_pkg(opkg_conf_t *conf, pkg_t *old);
diff --git a/libopkg/opkg_utils.c b/libopkg/opkg_utils.c
new file mode 100644
index 0000000..0b59645
--- /dev/null
+++ b/libopkg/opkg_utils.c
@@ -0,0 +1,183 @@
+/* opkg_utils.c - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+#include <ctype.h>
+#include <sys/vfs.h>
+
+#include "opkg_utils.h"
+#include "pkg.h"
+#include "pkg_hash.h"
+
+void print_pkg_status(pkg_t * pkg, FILE * file);
+
+int get_available_blocks(char * filesystem)
+{
+     struct statfs sfs;
+
+     if(statfs(filesystem, &sfs)){
+	  fprintf(stderr, "bad statfs\n");
+	  return 0;
+     }
+     /*    fprintf(stderr, "reported fs type %x\n", sfs.f_type); */
+     return ((sfs.f_bavail * sfs.f_bsize) / 1024);
+}
+
+char **read_raw_pkgs_from_file(const char *file_name)
+{
+     FILE *fp; 
+     char **ret;
+    
+     if(!(fp = fopen(file_name, "r"))){
+	  fprintf(stderr, "can't get %s open for read\n", file_name);
+	  return NULL;
+     }
+
+     ret = read_raw_pkgs_from_stream(fp);
+
+     fclose(fp);
+
+     return ret;
+}
+
+char **read_raw_pkgs_from_stream(FILE *fp)
+{    
+     char **raw = NULL, *buf, *scout;
+     int count = 0;
+     size_t size = 512;
+     
+     buf = malloc (size);
+
+     while (fgets(buf, size, fp)) {
+	  while (strlen (buf) == (size - 1)
+		 && buf[size-2] != '\n') {
+	       size_t o = size - 1;
+	       size *= 2;
+	       buf = realloc (buf, size);
+	       if (fgets (buf + o, size - o, fp) == NULL)
+		    break;
+	  }
+	  
+	  if(!(count % 50))
+	       raw = realloc(raw, (count + 50) * sizeof(char *));
+	
+	  if((scout = strchr(buf, '\n')))
+	       *scout = '\0';
+
+	  raw[count++] = strdup(buf);
+     }
+    
+     raw = realloc(raw, (count + 1) * sizeof(char *));
+     raw[count] = NULL;
+
+     free (buf);
+    
+     return raw;
+}
+
+/* something to remove whitespace, a hash pooper */
+char *trim_alloc(char *line)
+{
+     char *new; 
+     char *dest, *src, *end;
+    
+     new = malloc(strlen(line) + 1);
+     if ( new == NULL ){
+        fprintf(stderr,"%s: Unable to allocate memory\n",__FUNCTION__);
+        return NULL;
+     }
+     dest = new, src = line, end = line + (strlen(line) - 1);
+
+     /* remove it from the front */    
+     while(src && 
+	   isspace(*src) &&
+	   *src)
+	  src++;
+     /* and now from the back */
+     while((end > src) &&
+	   isspace(*end))
+	  end--;
+     end++;
+     *end = '\0';
+     strcpy(new, src);
+     /* this does from the first space
+      *  blasting away any versions stuff in depends
+      while(src && 
+      !isspace(*src) &&
+      *src)
+      *dest++ = *src++;
+      *dest = '\0';
+      */
+    
+     return new;
+}
+
+int line_is_blank(const char *line)
+{
+     const char *s;
+
+     for (s = line; *s; s++) {
+	  if (!isspace(*s))
+	       return 0;
+     }
+     return 1;
+}
+
+void push_error_list(struct errlist ** errors, char * msg){
+  struct errlist *err_lst_tmp;
+
+
+  err_lst_tmp = malloc ( sizeof (err_lst_tmp) );
+  err_lst_tmp->errmsg=strdup(msg) ;
+  err_lst_tmp->next = *errors;
+  *errors = err_lst_tmp;
+}
+
+
+void reverse_error_list(struct errlist **errors){
+   struct errlist *result=NULL;
+   struct errlist *current= *errors;
+   struct errlist *next;
+
+   while ( current != NULL ) {
+      next = current->next;
+      current->next=result;
+      result=current;
+      current=next;
+   }
+   *errors=result;
+
+}
+
+       
+void free_error_list(){
+struct errlist *err_tmp_lst;
+
+  err_tmp_lst = error_list;
+
+    while (err_tmp_lst != NULL) {
+      free(err_tmp_lst->errmsg);
+      err_tmp_lst = error_list->next;
+      free(error_list);
+      error_list = err_tmp_lst;
+    }
+
+
+}
+
+       
diff --git a/libopkg/opkg_utils.h b/libopkg/opkg_utils.h
new file mode 100644
index 0000000..f47e35f
--- /dev/null
+++ b/libopkg/opkg_utils.h
@@ -0,0 +1,29 @@
+/* opkg_utils.h - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef OPKG_UTILS_H
+#define OPKG_UTILS_H
+
+#include "pkg.h"
+
+int get_available_blocks(char * filesystem);
+char **read_raw_pkgs_from_file(const char *file_name);
+char **read_raw_pkgs_from_stream(FILE *fp);
+char *trim_alloc(char * line);
+int line_is_blank(const char *line);
+
+#endif
diff --git a/libopkg/pkg.c b/libopkg/pkg.c
new file mode 100644
index 0000000..fe9118f
--- /dev/null
+++ b/libopkg/pkg.c
@@ -0,0 +1,1762 @@
+/* pkg.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <ctype.h>
+#include <string.h>
+#include <errno.h>
+
+#include "pkg.h"
+
+#include "pkg_parse.h"
+#include "pkg_extract.h"
+#include "opkg_message.h"
+#include "opkg_utils.h"
+
+#include "sprintf_alloc.h"
+#include "file_util.h"
+#include "str_util.h"
+#include "xsystem.h"
+#include "opkg_conf.h"
+
+typedef struct enum_map enum_map_t;
+struct enum_map
+{
+     int value;
+     char *str;
+};
+
+static const enum_map_t pkg_state_want_map[] = {
+     { SW_UNKNOWN, "unknown"},
+     { SW_INSTALL, "install"},
+     { SW_DEINSTALL, "deinstall"},
+     { SW_PURGE, "purge"}
+};
+
+static const enum_map_t pkg_state_flag_map[] = {
+     { SF_OK, "ok"},
+     { SF_REINSTREQ, "reinstreq"},
+     { SF_HOLD, "hold"},
+     { SF_REPLACE, "replace"},
+     { SF_NOPRUNE, "noprune"},
+     { SF_PREFER, "prefer"},
+     { SF_OBSOLETE, "obsolete"},
+     { SF_USER, "user"},
+};
+
+static const enum_map_t pkg_state_status_map[] = {
+     { SS_NOT_INSTALLED, "not-installed" },
+     { SS_UNPACKED, "unpacked" },
+     { SS_HALF_CONFIGURED, "half-configured" },
+     { SS_INSTALLED, "installed" },
+     { SS_HALF_INSTALLED, "half-installed" },
+     { SS_CONFIG_FILES, "config-files" },
+     { SS_POST_INST_FAILED, "post-inst-failed" },
+     { SS_REMOVAL_FAILED, "removal-failed" }
+};
+
+static int verrevcmp(const char *val, const char *ref);
+
+
+pkg_t *pkg_new(void)
+{
+     pkg_t *pkg;
+
+     pkg = malloc(sizeof(pkg_t));
+     if (pkg == NULL) {
+	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	  return NULL;
+     }
+
+     pkg_init(pkg);
+
+     return pkg;
+}
+
+int pkg_init(pkg_t *pkg)
+{
+     memset(pkg, 0, sizeof(pkg_t));
+     pkg->name = NULL;
+     pkg->epoch = 0;
+     pkg->version = NULL;
+     pkg->revision = NULL;
+     pkg->familiar_revision = NULL;
+     pkg->dest = NULL;
+     pkg->src = NULL;
+     pkg->architecture = NULL;
+     pkg->maintainer = NULL;
+     pkg->section = NULL;
+     pkg->description = NULL;
+     pkg->state_want = SW_UNKNOWN;
+     pkg->state_flag = SF_OK;
+     pkg->state_status = SS_NOT_INSTALLED;
+     pkg->depends_str = NULL;
+     pkg->provides_str = NULL;
+     pkg->depends_count = 0;
+     pkg->depends = NULL;
+     pkg->suggests_str = NULL;
+     pkg->recommends_str = NULL;
+     pkg->suggests_count = 0;
+     pkg->recommends_count = 0;
+
+     /* Abhaya: added init for conflicts fields */
+     pkg->conflicts = NULL;
+     pkg->conflicts_count = 0;
+
+     /* added for replaces.  Jamey 7/23/2002 */
+     pkg->replaces = NULL;
+     pkg->replaces_count = 0;
+    
+     pkg->pre_depends_count = 0;
+     pkg->pre_depends_str = NULL;
+     pkg->provides_count = 0;
+     pkg->provides = NULL;
+     pkg->filename = NULL;
+     pkg->local_filename = NULL;
+     pkg->tmp_unpack_dir = NULL;
+     pkg->md5sum = NULL;
+     pkg->size = NULL;
+     pkg->installed_size = NULL;
+     pkg->priority = NULL;
+     pkg->source = NULL;
+     conffile_list_init(&pkg->conffiles);
+     pkg->installed_files = NULL;
+     pkg->installed_files_ref_cnt = 0;
+     pkg->essential = 0;
+     pkg->provided_by_hand = 0;
+
+     return 0;
+}
+
+void pkg_deinit(pkg_t *pkg)
+{
+     free(pkg->name);
+     pkg->name = NULL;
+     pkg->epoch = 0;
+     free(pkg->version);
+     pkg->version = NULL;
+     /* revision and familiar_revision share storage with version, so
+	don't free */
+     pkg->revision = NULL;
+     pkg->familiar_revision = NULL;
+     /* owned by opkg_conf_t */
+     pkg->dest = NULL;
+     /* owned by opkg_conf_t */
+     pkg->src = NULL;
+     free(pkg->architecture);
+     pkg->architecture = NULL;
+     free(pkg->maintainer);
+     pkg->maintainer = NULL;
+     free(pkg->section);
+     pkg->section = NULL;
+     free(pkg->description);
+     pkg->description = NULL;
+     pkg->state_want = SW_UNKNOWN;
+     pkg->state_flag = SF_OK;
+     pkg->state_status = SS_NOT_INSTALLED;
+     free(pkg->depends_str);
+     pkg->depends_str = NULL;
+     free(pkg->provides_str);
+     pkg->provides_str = NULL;
+     pkg->depends_count = 0;
+     /* XXX: CLEANUP: MEMORY_LEAK: how to free up pkg->depends ? */
+     pkg->pre_depends_count = 0;
+     free(pkg->pre_depends_str);
+     pkg->pre_depends_str = NULL;
+     pkg->provides_count = 0;
+     /* XXX: CLEANUP: MEMORY_LEAK: how to free up pkg->provides ? */
+     /* XXX: CLEANUP: MEMORY_LEAK: how to free up pkg->suggests ? */
+     free(pkg->filename);
+     pkg->filename = NULL;
+     free(pkg->local_filename);
+     pkg->local_filename = NULL;
+     /* CLEANUP: It'd be nice to pullin the cleanup function from
+	opkg_install.c here. See comment in
+	opkg_install.c:cleanup_temporary_files */
+     free(pkg->tmp_unpack_dir);
+     pkg->tmp_unpack_dir = NULL;
+     free(pkg->md5sum);
+     pkg->md5sum = NULL;
+     free(pkg->size);
+     pkg->size = NULL;
+     free(pkg->installed_size);
+     pkg->installed_size = NULL;
+     free(pkg->priority);
+     pkg->priority = NULL;
+     free(pkg->source);
+     pkg->source = NULL;
+     conffile_list_deinit(&pkg->conffiles);
+     /* XXX: QUESTION: Is forcing this to 1 correct? I suppose so,
+	since if they are calling deinit, they should know. Maybe do an
+	assertion here instead? */
+     pkg->installed_files_ref_cnt = 1;
+     pkg_free_installed_files(pkg);
+     pkg->essential = 0;
+}
+
+int pkg_init_from_file(pkg_t *pkg, const char *filename)
+{
+     int err;
+     char **raw;
+     FILE *control_file;
+
+     err = pkg_init(pkg);
+     if (err) { return err; }
+
+     pkg->local_filename = strdup(filename);
+    
+     control_file = tmpfile();
+     err = pkg_extract_control_file_to_stream(pkg, control_file);
+     if (err) { return err; }
+
+     rewind(control_file);
+     raw = read_raw_pkgs_from_stream(control_file);
+     pkg_parse_raw(pkg, &raw, NULL, NULL);
+
+     fclose(control_file);
+
+     return 0;
+}
+
+/* Merge any new information in newpkg into oldpkg */
+/* XXX: CLEANUP: This function shouldn't actually modify anything in
+   newpkg, but should leave it usable. This rework is so that
+   pkg_hash_insert doesn't clobber the pkg that you pass into it. */
+/* 
+ * uh, i thought that i had originally written this so that it took 
+ * two pkgs and returned a new one?  we can do that again... -sma
+ */
+int pkg_merge(pkg_t *oldpkg, pkg_t *newpkg, int set_status)
+{
+     if (oldpkg == newpkg) {
+	  return 0;
+     }
+
+     if (!oldpkg->src)
+	  oldpkg->src = newpkg->src;
+     if (!oldpkg->dest)
+	  oldpkg->dest = newpkg->dest;
+     if (!oldpkg->architecture)
+	  oldpkg->architecture = str_dup_safe(newpkg->architecture);
+     if (!oldpkg->arch_priority)
+	  oldpkg->arch_priority = newpkg->arch_priority;
+     if (!oldpkg->section)
+	  oldpkg->section = str_dup_safe(newpkg->section);
+     if(!oldpkg->maintainer)
+	  oldpkg->maintainer = str_dup_safe(newpkg->maintainer);
+     if(!oldpkg->description)
+	  oldpkg->description = str_dup_safe(newpkg->description);
+     if (set_status) {
+	  /* merge the state_flags from the new package */
+	  oldpkg->state_want = newpkg->state_want;
+	  oldpkg->state_status = newpkg->state_status;
+	  oldpkg->state_flag = newpkg->state_flag;
+     } else {
+	  if (oldpkg->state_want == SW_UNKNOWN)
+	       oldpkg->state_want = newpkg->state_want;
+	  if (oldpkg->state_status == SS_NOT_INSTALLED)
+	       oldpkg->state_status = newpkg->state_status;
+	  oldpkg->state_flag |= newpkg->state_flag;
+     }
+
+     if (!oldpkg->depends_str && !oldpkg->pre_depends_str && !oldpkg->recommends_str && !oldpkg->suggests_str) {
+	  oldpkg->depends_str = newpkg->depends_str;
+	  newpkg->depends_str = NULL;
+	  oldpkg->depends_count = newpkg->depends_count;
+	  newpkg->depends_count = 0;
+
+	  oldpkg->depends = newpkg->depends;
+	  newpkg->depends = NULL;
+
+	  oldpkg->pre_depends_str = newpkg->pre_depends_str;
+	  newpkg->pre_depends_str = NULL;
+	  oldpkg->pre_depends_count = newpkg->pre_depends_count;
+	  newpkg->pre_depends_count = 0;
+
+	  oldpkg->recommends_str = newpkg->recommends_str;
+	  newpkg->recommends_str = NULL;
+	  oldpkg->recommends_count = newpkg->recommends_count;
+	  newpkg->recommends_count = 0;
+
+	  oldpkg->suggests_str = newpkg->suggests_str;
+	  newpkg->suggests_str = NULL;
+	  oldpkg->suggests_count = newpkg->suggests_count;
+	  newpkg->suggests_count = 0;
+     }
+
+     if (!oldpkg->provides_str) {
+	  oldpkg->provides_str = newpkg->provides_str;
+	  newpkg->provides_str = NULL;
+	  oldpkg->provides_count = newpkg->provides_count;
+	  newpkg->provides_count = 0;
+
+	  oldpkg->provides = newpkg->provides;
+	  newpkg->provides = NULL;
+     }
+
+     if (!oldpkg->conflicts_str) {
+	  oldpkg->conflicts_str = newpkg->conflicts_str;
+	  newpkg->conflicts_str = NULL;
+	  oldpkg->conflicts_count = newpkg->conflicts_count;
+	  newpkg->conflicts_count = 0;
+
+	  oldpkg->conflicts = newpkg->conflicts;
+	  newpkg->conflicts = NULL;
+     }
+
+     if (!oldpkg->replaces_str) {
+	  oldpkg->replaces_str = newpkg->replaces_str;
+	  newpkg->replaces_str = NULL;
+	  oldpkg->replaces_count = newpkg->replaces_count;
+	  newpkg->replaces_count = 0;
+
+	  oldpkg->replaces = newpkg->replaces;
+	  newpkg->replaces = NULL;
+     }
+
+     if (!oldpkg->filename)
+	  oldpkg->filename = str_dup_safe(newpkg->filename);
+     if (0)
+     fprintf(stdout, "pkg=%s old local_filename=%s new local_filename=%s\n", 
+	     oldpkg->name, oldpkg->local_filename, newpkg->local_filename);
+     if (!oldpkg->local_filename)
+	  oldpkg->local_filename = str_dup_safe(newpkg->local_filename);
+     if (!oldpkg->tmp_unpack_dir)
+	  oldpkg->tmp_unpack_dir = str_dup_safe(newpkg->tmp_unpack_dir);
+     if (!oldpkg->md5sum)
+	  oldpkg->md5sum = str_dup_safe(newpkg->md5sum);
+     if (!oldpkg->size)
+	  oldpkg->size = str_dup_safe(newpkg->size);
+     if (!oldpkg->installed_size)
+	  oldpkg->installed_size = str_dup_safe(newpkg->installed_size);
+     if (!oldpkg->priority)
+	  oldpkg->priority = str_dup_safe(newpkg->priority);
+     if (!oldpkg->source)
+	  oldpkg->source = str_dup_safe(newpkg->source);
+     if (oldpkg->conffiles.head == NULL){
+	  oldpkg->conffiles = newpkg->conffiles;
+	  conffile_list_init(&newpkg->conffiles);
+     }
+     if (!oldpkg->installed_files){
+	  oldpkg->installed_files = newpkg->installed_files;
+	  oldpkg->installed_files_ref_cnt = newpkg->installed_files_ref_cnt;
+	  newpkg->installed_files = NULL;
+     }
+     if (!oldpkg->essential)
+	  oldpkg->essential = newpkg->essential;
+
+     return 0;
+}
+
+abstract_pkg_t *abstract_pkg_new(void)
+{
+     abstract_pkg_t * ab_pkg;
+
+     ab_pkg = malloc(sizeof(abstract_pkg_t));
+
+     if (ab_pkg == NULL) {
+	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	  return NULL;
+     }
+
+     if ( abstract_pkg_init(ab_pkg) < 0 ) 
+        return NULL;
+
+     return ab_pkg;
+}
+
+int abstract_pkg_init(abstract_pkg_t *ab_pkg)
+{
+     memset(ab_pkg, 0, sizeof(abstract_pkg_t));
+
+     ab_pkg->provided_by = abstract_pkg_vec_alloc();
+     if (ab_pkg->provided_by==NULL){
+        return -1;
+     }
+     ab_pkg->dependencies_checked = 0;
+     ab_pkg->state_status = SS_NOT_INSTALLED;
+
+     return 0;
+}
+
+void set_flags_from_control(opkg_conf_t *conf, pkg_t *pkg){
+     char * temp_str;
+     char **raw =NULL;
+     char **raw_start=NULL; 
+
+     temp_str = (char *) malloc (strlen(pkg->dest->info_dir)+strlen(pkg->name)+12);
+     if (temp_str == NULL ){
+        opkg_message(conf, OPKG_INFO, "Out of memory in  %s\n", __FUNCTION__);
+        return;
+     }
+     sprintf( temp_str,"%s/%s.control",pkg->dest->info_dir,pkg->name);
+   
+     raw = raw_start = read_raw_pkgs_from_file(temp_str);
+     if (raw == NULL ){
+        opkg_message(conf, OPKG_ERROR, "Unable to open the control file in  %s\n", __FUNCTION__);
+        return;
+     }
+
+     while(*raw){
+        if (!pkg_valorize_other_field(pkg, &raw ) == 0) {
+            opkg_message(conf, OPKG_DEBUG, "unable to read control file for %s. May be empty\n", pkg->name);
+        }
+     }
+     raw = raw_start;
+     while (*raw) {
+        if (raw!=NULL)
+          free(*raw++);
+     }
+
+     free(raw_start); 
+     free(temp_str);
+
+     return ;
+
+}
+
+char * pkg_formatted_info(pkg_t *pkg )
+{
+     char *line;
+     char * buff;
+
+     buff = malloc(8192);
+     if (buff == NULL) {
+	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	  return NULL;
+     }
+
+     buff[0] = '\0';
+
+     line = pkg_formatted_field(pkg, "Package");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Version");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Depends");
+     strncat(buff ,line, strlen(line));
+     free(line);
+     
+     line = pkg_formatted_field(pkg, "Recommends");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Suggests");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Provides");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Replaces");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Conflicts");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Status");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Section");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Essential"); /* @@@@ should be removed in future release. *//* I do not agree with this Pigi*/
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Architecture");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Maintainer");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "MD5sum");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Size");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Filename");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Conffiles");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Source");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Description");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     line = pkg_formatted_field(pkg, "Installed-Time");
+     strncat(buff ,line, strlen(line));
+     free(line);
+
+     return buff;
+}
+
+char * pkg_formatted_field(pkg_t *pkg, const char *field )
+{
+     static size_t LINE_LEN = 128;
+     char * temp = (char *)malloc(1);
+     int len = 0;
+     int flag_provide_false = 0;
+
+/*
+  Pigi: After some discussion with Florian we decided to modify the full procedure in 
+        dynamic memory allocation. This should avoid any other segv in this area ( except for bugs )
+*/
+
+     if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
+	  goto UNKNOWN_FMT_FIELD;
+     }
+
+     temp[0]='\0'; 
+
+     switch (field[0])
+     {
+     case 'a':
+     case 'A':
+	  if (strcasecmp(field, "Architecture") == 0) {
+	       /* Architecture */
+	       if (pkg->architecture) {
+                   temp = (char *)realloc(temp,strlen(pkg->architecture)+17);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->architecture)+17), "Architecture: %s\n", pkg->architecture);
+	       }
+	  } else if (strcasecmp(field, "Auto-Installed") == 0) {
+		/* Auto-Installed flag */
+		if (pkg->auto_installed) {
+		    char * s = "Auto-Installed: yes\n";
+		    temp = (char *)realloc(temp, strlen(s) + 1);
+		    strcpy (temp, s);
+		}
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+	  break;
+     case 'c':
+     case 'C':
+	  if (strcasecmp(field, "Conffiles") == 0) {
+	       /* Conffiles */
+	       conffile_list_elt_t *iter;
+               char confstr[LINE_LEN];
+
+	       if (pkg->conffiles.head == NULL) {
+		    return temp;
+	       }
+
+               len = 14 ;
+	       for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+		    if (iter->data->name && iter->data->value) {
+                       len = len + (strlen(iter->data->name)+strlen(iter->data->value)+5);
+		    }
+	       }
+               temp = (char *)realloc(temp,len);
+               if ( temp == NULL ){
+	          fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	          return NULL;
+               }
+               temp[0]='\0';
+               strncpy(temp, "Conffiles:\n", 12);
+	       for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+		    if (iter->data->name && iter->data->value) {
+                         snprintf(confstr, LINE_LEN, "%s %s\n", iter->data->name, iter->data->value);
+                         strncat(temp, confstr, strlen(confstr));           
+		    }
+	       }
+	  } else if (strcasecmp(field, "Conflicts") == 0) {
+	       int i;
+
+	       if (pkg->conflicts_count) {
+                    char conflictstr[LINE_LEN];
+                    len = 14 ;
+		    for(i = 0; i < pkg->conflicts_count; i++) {
+                        len = len + (strlen(pkg->conflicts_str[i])+5);
+                    }
+                    temp = (char *)realloc(temp,len);
+                    if ( temp == NULL ){
+	               fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	               return NULL;
+                    }
+                    temp[0]='\0';
+                    strncpy(temp, "Conflicts:", 11);
+		    for(i = 0; i < pkg->conflicts_count; i++) {
+                        snprintf(conflictstr, LINE_LEN, "%s %s", i == 0 ? "" : ",", pkg->conflicts_str[i]);
+                        strncat(temp, conflictstr, strlen(conflictstr));           
+                    }
+                    strncat(temp, "\n", strlen("\n")); 
+	       }
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+	  break;
+     case 'd':
+     case 'D':
+	  if (strcasecmp(field, "Depends") == 0) {
+	       /* Depends */
+	       int i;
+
+	       if (pkg->depends_count) {
+                    char depstr[LINE_LEN];
+                    len = 14 ;
+		    for(i = 0; i < pkg->depends_count; i++) {
+                        len = len + (strlen(pkg->depends_str[i])+4);
+                    }
+                    temp = (char *)realloc(temp,len);
+                    if ( temp == NULL ){
+	               fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	               return NULL;
+                    }
+                    temp[0]='\0';
+                    strncpy(temp, "Depends:", 10);
+		    for(i = 0; i < pkg->depends_count; i++) {
+                        snprintf(depstr, LINE_LEN, "%s %s", i == 0 ? "" : ",", pkg->depends_str[i]);
+                        strncat(temp, depstr, strlen(depstr));           
+                    }
+                    strncat(temp, "\n", strlen("\n")); 
+	       }
+	  } else if (strcasecmp(field, "Description") == 0) {
+	       /* Description */
+	       if (pkg->description) {
+                   temp = (char *)realloc(temp,strlen(pkg->description)+16);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->description)+16), "Description: %s\n", pkg->description);
+	       }
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+      break;
+     case 'e':
+     case 'E': {
+	  /* Essential */
+	  if (pkg->essential) {
+              temp = (char *)realloc(temp,16);
+              if ( temp == NULL ){
+	         fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	         return NULL;
+              }
+              temp[0]='\0';
+              snprintf(temp, (16), "Essential: yes\n");
+	  }
+     }
+	  break;
+     case 'f':
+     case 'F': {
+	  /* Filename */
+	  if (pkg->filename) {
+              temp = (char *)realloc(temp,strlen(pkg->filename)+12);
+              if ( temp == NULL ){
+	          fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	          return NULL;
+              }
+              temp[0]='\0';
+              snprintf(temp, (strlen(pkg->filename)+12), "Filename: %s\n", pkg->filename);
+	  }
+     }
+	  break;
+     case 'i':
+     case 'I': {
+	  if (strcasecmp(field, "Installed-Size") == 0) {
+	       /* Installed-Size */
+               temp = (char *)realloc(temp,strlen(pkg->installed_size)+17);
+               if ( temp == NULL ){
+	           fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	           return NULL;
+               }
+               temp[0]='\0';
+               snprintf(temp, (strlen(pkg->installed_size)+17), "Installed-Size: %s\n", pkg->installed_size);
+	  } else if (strcasecmp(field, "Installed-Time") == 0 && pkg->installed_time) {
+               temp = (char *)realloc(temp,29);
+               if ( temp == NULL ){
+	          fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	          return NULL;
+               }
+               temp[0]='\0';
+               snprintf(temp, 29, "Installed-Time: %lu\n", pkg->installed_time);
+	  }
+     }
+	  break;
+     case 'm':
+     case 'M': {
+	  /* Maintainer | MD5sum */
+	  if (strcasecmp(field, "Maintainer") == 0) {
+	       /* Maintainer */
+	       if (pkg->maintainer) {
+                   temp = (char *)realloc(temp,strlen(pkg->maintainer)+14);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->maintainer)+14), "maintainer: %s\n", pkg->maintainer);
+	       }
+	  } else if (strcasecmp(field, "MD5sum") == 0) {
+	       /* MD5sum */
+	       if (pkg->md5sum) {
+                   temp = (char *)realloc(temp,strlen(pkg->md5sum)+11);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->md5sum)+11), "MD5Sum: %s\n", pkg->md5sum);
+	       }
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+     }
+	  break;
+     case 'p':
+     case 'P': {
+	  if (strcasecmp(field, "Package") == 0) {
+	       /* Package */
+               temp = (char *)realloc(temp,strlen(pkg->name)+11);
+               if ( temp == NULL ){
+	          fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	          return NULL;
+               }
+               temp[0]='\0';
+               snprintf(temp, (strlen(pkg->name)+11), "Package: %s\n", pkg->name);
+	  } else if (strcasecmp(field, "Priority") == 0) {
+	       /* Priority */
+               temp = (char *)realloc(temp,strlen(pkg->priority)+12);
+               if ( temp == NULL ){
+	          fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	          return NULL;
+               }
+               temp[0]='\0';
+               snprintf(temp, (strlen(pkg->priority)+12), "Priority: %s\n", pkg->priority);
+	  } else if (strcasecmp(field, "Provides") == 0) {
+	       /* Provides */
+	       int i;
+
+	       if (pkg->provides_count) {
+               /* Here we check if the opkg_internal_use_only is used, and we discard it.*/
+                  for ( i=0; i < pkg->provides_count; i++ ){
+	              if (strstr(pkg->provides_str[i],"opkg_internal_use_only")!=NULL) {
+                         memset (pkg->provides_str[i],'\x0',strlen(pkg->provides_str[i])); /* Pigi clear my trick flag, just in case */
+                         flag_provide_false = 1;
+                      }
+                  }
+                  if ( !flag_provide_false ||                                             /* Pigi there is not my trick flag */
+                     ((flag_provide_false) &&  (pkg->provides_count > 1))){             /* Pigi There is, but we also have others Provides */
+                     char provstr[LINE_LEN];
+                     len = 15;
+		     for(i = 0; i < pkg->provides_count; i++) {
+                         len = len + (strlen(pkg->provides_str[i])+5);
+                     }
+                     temp = (char *)realloc(temp,len);
+                     if ( temp == NULL ){
+	                fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	                return NULL;
+                     }
+                     temp[0]='\0';
+                     strncpy(temp, "Provides:", 12);
+		     for(i = 0; i < pkg->provides_count; i++) {
+                         if (strlen(pkg->provides_str[i])>0){;
+                            snprintf(provstr, LINE_LEN, "%s %s", i == 1 ? "" : ",", pkg->provides_str[i]);
+                            strncat(temp, provstr, strlen(provstr));           
+                         }
+                     }
+                     strncat(temp, "\n", strlen("\n")); 
+                  }
+               }
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+     }
+	  break;
+     case 'r':
+     case 'R': {
+	  int i;
+	  /* Replaces | Recommends*/
+	  if (strcasecmp (field, "Replaces") == 0) {
+	       if (pkg->replaces_count) {
+                    char replstr[LINE_LEN];
+                    len = 14;
+		    for (i = 0; i < pkg->replaces_count; i++) {
+                        len = len + (strlen(pkg->replaces_str[i])+5);
+                    }
+                    temp = (char *)realloc(temp,len);
+                    if ( temp == NULL ){
+	               fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	               return NULL;
+                    }
+                    temp[0]='\0';
+                    strncpy(temp, "Replaces:", 12);
+		    for (i = 0; i < pkg->replaces_count; i++) {
+                        snprintf(replstr, LINE_LEN, "%s %s", i == 0 ? "" : ",", pkg->replaces_str[i]);
+                        strncat(temp, replstr, strlen(replstr));           
+                    }
+                    strncat(temp, "\n", strlen("\n")); 
+	       }
+	  } else if (strcasecmp (field, "Recommends") == 0) {
+	       if (pkg->recommends_count) {
+                    char recstr[LINE_LEN];
+                    len = 15;
+		    for(i = 0; i < pkg->recommends_count; i++) {
+                         len = len + (strlen( pkg->recommends_str[i])+5);
+                    }
+                    temp = (char *)realloc(temp,len);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                    temp[0]='\0';
+                    strncpy(temp, "Recommends:", 13);
+		    for(i = 0; i < pkg->recommends_count; i++) {
+                        snprintf(recstr, LINE_LEN, "%s %s", i == 0 ? "" : ",", pkg->recommends_str[i]);
+                        strncat(temp, recstr, strlen(recstr));           
+                    }
+                    strncat(temp, "\n", strlen("\n")); 
+	       }
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+     }
+	  break;
+     case 's':
+     case 'S': {
+	  /* Section | Size | Source | Status | Suggests */
+	  if (strcasecmp(field, "Section") == 0) {
+	       /* Section */
+	       if (pkg->section) {
+                   temp = (char *)realloc(temp,strlen(pkg->section)+11);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->section)+11), "Section: %s\n", pkg->section);
+	       }
+	  } else if (strcasecmp(field, "Size") == 0) {
+	       /* Size */
+	       if (pkg->size) {
+                   temp = (char *)realloc(temp,strlen(pkg->size)+8);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->size)+8), "Size: %s\n", pkg->size);
+	       }
+	  } else if (strcasecmp(field, "Source") == 0) {
+	       /* Source */
+	       if (pkg->source) {
+                   temp = (char *)realloc(temp,strlen(pkg->source)+10);
+                   if ( temp == NULL ){
+	              fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	              return NULL;
+                   }
+                   temp[0]='\0';
+                   snprintf(temp, (strlen(pkg->source)+10), "Source: %s\n", pkg->source);
+               }
+	  } else if (strcasecmp(field, "Status") == 0) {
+	       /* Status */
+               /* Benjamin Pineau note: we should avoid direct usage of 
+                * strlen(arg) without keeping "arg" for later free()
+                */
+               char *pflag=pkg_state_flag_to_str(pkg->state_flag);
+               char *pstat=pkg_state_status_to_str(pkg->state_status);
+               char *pwant=pkg_state_want_to_str(pkg->state_want);
+
+               size_t sum_of_sizes = (size_t) ( strlen(pwant)+ strlen(pflag)+ strlen(pstat) + 12 );
+               temp = (char *)realloc(temp,sum_of_sizes);
+               if ( temp == NULL ){
+                   fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+                   return NULL;
+                }
+                temp[0]='\0';
+                snprintf(temp, sum_of_sizes , "Status: %s %s %s\n", pwant, pflag, pstat);
+                free(pflag);
+                free(pwant);
+               if(pstat) /* pfstat can be NULL if ENOMEM */
+                   free(pstat);
+	  } else if (strcasecmp(field, "Suggests") == 0) {
+	       if (pkg->suggests_count) {
+		    int i;
+                    char sugstr[LINE_LEN];
+                    len = 13;
+		    for(i = 0; i < pkg->suggests_count; i++) {
+                        len = len + (strlen(pkg->suggests_str[i])+5);
+                    }
+                    temp = (char *)realloc(temp,len);
+                    if ( temp == NULL ){
+	               fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	               return NULL;
+                    }
+                    temp[0]='\0';
+                    strncpy(temp, "Suggests:", 10);
+		    for(i = 0; i < pkg->suggests_count; i++) {
+                        snprintf(sugstr, LINE_LEN, "%s %s", i == 0 ? "" : ",", pkg->suggests_str[i]);
+                        strncat(temp, sugstr, strlen(sugstr));           
+                    }
+                    strncat(temp, "\n", strlen("\n")); 
+	       }
+	  } else {
+	       goto UNKNOWN_FMT_FIELD;
+	  }
+     }
+	  break;
+     case 'v':
+     case 'V': {
+	  /* Version */
+	  char *version = pkg_version_str_alloc(pkg);
+          temp = (char *)realloc(temp,strlen(version)+14);
+          if ( temp == NULL ){
+	      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	      return NULL;
+          }
+          temp[0]='\0';
+          snprintf(temp, (strlen(version)+12), "Version: %s\n", version);
+	  free(version);
+     }
+	  break;
+     default:
+	  goto UNKNOWN_FMT_FIELD;
+     }
+
+     if ( strlen(temp)<2 ) {
+          temp[0]='\0';
+     }
+     return temp;
+
+ UNKNOWN_FMT_FIELD:
+     fprintf(stderr, "%s: ERROR: Unknown field name: %s\n", __FUNCTION__, field);
+     if ( strlen(temp)<2 ) {
+          temp[0]='\0';
+     }
+
+     return temp;
+}
+
+void pkg_print_info(pkg_t *pkg, FILE *file)
+{
+     char * buff;
+     if (pkg == NULL) {
+	return;
+     }
+
+     buff = pkg_formatted_info(pkg);
+     if ( buff == NULL ) 
+         return;
+     if (strlen(buff)>2){
+         fwrite(buff, 1, strlen(buff), file);
+     } 
+     free(buff);
+}
+
+void pkg_print_status(pkg_t * pkg, FILE * file)
+{
+     if (pkg == NULL) {
+	  return;
+     }
+
+     /* XXX: QUESTION: Do we actually want more fields here? The
+	original idea was to save space by installing only what was
+	needed for actual computation, (package, version, status,
+	essential, conffiles). The assumption is that all other fields
+	can be found in th available file.
+
+	But, someone proposed the idea to make it possible to
+	reconstruct a .ipk from an installed package, (ie. for beaming
+	from one handheld to another). So, maybe we actually want a few
+	more fields here, (depends, suggests, etc.), so that that would
+	be guaranteed to work even in the absence of more information
+	from the available file.
+
+	28-MAR-03: kergoth and I discussed this yesterday.  We think
+	the essential info needs to be here for all installed packages
+	because they may not appear in the Packages files on various
+	feeds.  Furthermore, one should be able to install from URL or
+	local storage without requiring a Packages file from any feed.
+	-Jamey
+     */
+     pkg_print_field(pkg, file, "Package");
+     pkg_print_field(pkg, file, "Version");
+     pkg_print_field(pkg, file, "Depends");
+     pkg_print_field(pkg, file, "Recommends");
+     pkg_print_field(pkg, file, "Suggests");
+     pkg_print_field(pkg, file, "Provides");
+     pkg_print_field(pkg, file, "Replaces");
+     pkg_print_field(pkg, file, "Conflicts");
+     pkg_print_field(pkg, file, "Status");
+     pkg_print_field(pkg, file, "Essential"); /* @@@@ should be removed in future release. */
+     pkg_print_field(pkg, file, "Architecture");
+     pkg_print_field(pkg, file, "Conffiles");
+     pkg_print_field(pkg, file, "Installed-Time");
+     pkg_print_field(pkg, file, "Auto-Installed");
+     fputs("\n", file);
+}
+
+void pkg_print_field(pkg_t *pkg, FILE *file, const char *field)
+{
+     char *buff;
+     if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
+       fprintf(stderr, "%s: ERROR: Unknown field name: %s\n",
+	     __FUNCTION__, field);
+     }
+     buff = pkg_formatted_field(pkg, field);
+     if (strlen(buff)>2) {
+       fprintf(file, "%s", buff);
+       fflush(file);
+     }
+     free(buff);
+     return;
+}
+
+/*
+ * libdpkg - Debian packaging suite library routines
+ * vercmp.c - comparison of version numbers
+ *
+ * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
+ */
+int pkg_compare_versions(const pkg_t *pkg, const pkg_t *ref_pkg)
+{
+     int r;
+
+     if (pkg->epoch > ref_pkg->epoch) {
+	  return 1;
+     }
+
+     if (pkg->epoch < ref_pkg->epoch) {
+	  return -1;
+     }
+
+     r = verrevcmp(pkg->version, ref_pkg->version);
+     if (r) {
+	  return r;
+     }
+
+#ifdef USE_DEBVERSION
+     r = verrevcmp(pkg->revision, ref_pkg->revision);
+     if (r) {
+	  return r;
+     }
+
+     r = verrevcmp(pkg->familiar_revision, ref_pkg->familiar_revision);
+#endif
+
+     return r;
+}
+
+int verrevcmp(const char *val, const char *ref)
+{
+     int vc, rc;
+     long vl, rl;
+     const char *vp, *rp;
+     const char *vsep, *rsep;
+    
+     if (!val) val= "";
+     if (!ref) ref= "";
+     for (;;) {
+	  vp= val;  while (*vp && !isdigit(*vp)) vp++;
+	  rp= ref;  while (*rp && !isdigit(*rp)) rp++;
+	  for (;;) {
+	       vc= (val == vp) ? 0 : *val++;
+	       rc= (ref == rp) ? 0 : *ref++;
+	       if (!rc && !vc) break;
+	       if (vc && !isalpha(vc)) vc += 256; /* assumes ASCII character set */
+	       if (rc && !isalpha(rc)) rc += 256;
+	       if (vc != rc) return vc - rc;
+	  }
+	  val= vp;
+	  ref= rp;
+	  vl=0;  if (isdigit(*vp)) vl= strtol(val,(char**)&val,10);
+	  rl=0;  if (isdigit(*rp)) rl= strtol(ref,(char**)&ref,10);
+	  if (vl != rl) return vl - rl;
+
+	  vc = *val;
+	  rc = *ref;
+	  vsep = strchr(".-", vc);
+	  rsep = strchr(".-", rc);
+	  if (vsep && !rsep) return -1;
+	  if (!vsep && rsep) return +1;
+
+	  if (!*val && !*ref) return 0;
+	  if (!*val) return -1;
+	  if (!*ref) return +1;
+     }
+}
+
+int pkg_version_satisfied(pkg_t *it, pkg_t *ref, const char *op)
+{
+     int r;
+
+     r = pkg_compare_versions(it, ref);
+
+     if (strcmp(op, "<=") == 0 || strcmp(op, "<") == 0) {
+	  return r <= 0;
+     }
+
+     if (strcmp(op, ">=") == 0 || strcmp(op, ">") == 0) {
+	  return r >= 0;
+     }
+
+     if (strcmp(op, "<<") == 0) {
+	  return r < 0;
+     }
+
+     if (strcmp(op, ">>") == 0) {
+	  return r > 0;
+     }
+
+     if (strcmp(op, "=") == 0) {
+	  return r == 0;
+     }
+
+     fprintf(stderr, "unknown operator: %s", op);
+     return 0;
+}
+
+int pkg_name_version_and_architecture_compare(void *p1, void *p2)
+{
+     const pkg_t *a = *(const pkg_t **)p1;
+     const pkg_t *b = *(const pkg_t **)p2;
+     int namecmp;
+     int vercmp;
+     if (!a->name || !b->name) {
+       fprintf(stderr, "pkg_name_version_and_architecture_compare: a=%p a->name=%p b=%p b->name=%p\n",
+	       a, a->name, b, b->name);
+       return 0;
+     }
+       
+     namecmp = strcmp(a->name, b->name);
+     if (namecmp)
+	  return namecmp;
+     vercmp = pkg_compare_versions(a, b);
+     if (vercmp)
+	  return vercmp;
+     if (!a->arch_priority || !b->arch_priority) {
+       fprintf(stderr, "pkg_name_version_and_architecture_compare: a=%p a->arch_priority=%i b=%p b->arch_priority=%i\n",
+	       a, a->arch_priority, b, b->arch_priority);
+       return 0;
+     }
+     if (a->arch_priority > b->arch_priority)
+	  return 1;
+     if (a->arch_priority < b->arch_priority)
+	  return -1;
+     return 0;
+}
+
+int abstract_pkg_name_compare(void *p1, void *p2)
+{
+     const abstract_pkg_t *a = *(const abstract_pkg_t **)p1;
+     const abstract_pkg_t *b = *(const abstract_pkg_t **)p2;
+     if (!a->name || !b->name) {
+       fprintf(stderr, "abstract_pkg_name_compare: a=%p a->name=%p b=%p b->name=%p\n",
+	       a, a->name, b, b->name);
+       return 0;
+     }
+     return strcmp(a->name, b->name);
+}
+
+
+char *pkg_version_str_alloc(pkg_t *pkg)
+{
+     char *complete_version;
+     char *epoch_str;
+#ifdef USE_DEBVERSION
+     char *revision_str;
+     char *familiar_revision_str;
+#endif
+
+     if (pkg->epoch) {
+	  sprintf_alloc(&epoch_str, "%d:", pkg->epoch);
+     } else {
+	  epoch_str = strdup("");
+     }
+
+#ifdef USE_DEBVERSION
+     if (pkg->revision && strlen(pkg->revision)) {
+	  sprintf_alloc(&revision_str, "-%s", pkg->revision);
+     } else {
+	  revision_str = strdup("");
+     }
+
+     if (pkg->familiar_revision && strlen(pkg->familiar_revision)) {
+	  sprintf_alloc(&familiar_revision_str, "-fam%s", pkg->familiar_revision);
+     } else {
+	  familiar_revision_str = strdup("");
+     }
+#endif
+
+#ifdef USE_DEBVERSION
+     sprintf_alloc(&complete_version, "%s%s%s%s",
+		   epoch_str, pkg->version, revision_str, familiar_revision_str);
+#else
+     sprintf_alloc(&complete_version, "%s%s",
+		   epoch_str, pkg->version);
+#endif
+
+     free(epoch_str);
+#ifdef USE_DEBVERSION
+     free(revision_str);
+     free(familiar_revision_str);
+#endif
+
+     return complete_version;
+}
+
+str_list_t *pkg_get_installed_files(pkg_t *pkg)
+{
+     int err;
+     char *list_file_name = NULL;
+     FILE *list_file = NULL;
+     char *line;
+     char *installed_file_name;
+     int rootdirlen;
+
+     pkg->installed_files_ref_cnt++;
+
+     if (pkg->installed_files) {
+	  return pkg->installed_files;
+     }
+
+     pkg->installed_files = str_list_alloc();
+     if (pkg->installed_files == NULL) {
+	  fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	  return NULL;
+     }
+
+     /* For uninstalled packages, get the file list firectly from the package.
+	For installed packages, look at the package.list file in the database.
+     */
+     if (pkg->state_status == SS_NOT_INSTALLED || pkg->dest == NULL) {
+	  if (pkg->local_filename == NULL) {
+	       return pkg->installed_files;
+	  }
+	  /* XXX: CLEANUP: Maybe rewrite this to avoid using a temporary
+	     file. In other words, change deb_extract so that it can
+	     simply return the file list as a char *[] rather than
+	     insisting on writing in to a FILE * as it does now. */
+	  list_file = tmpfile();
+	  err = pkg_extract_data_file_names_to_stream(pkg, list_file);
+	  if (err) {
+	       fclose(list_file);
+	       fprintf(stderr, "%s: Error extracting file list from %s: %s\n",
+		       __FUNCTION__, pkg->local_filename, strerror(err));
+	       return pkg->installed_files;
+	  }
+	  rewind(list_file);
+     } else {
+	  sprintf_alloc(&list_file_name, "%s/%s.list",
+			pkg->dest->info_dir, pkg->name);
+	  if (! file_exists(list_file_name)) {
+	       free(list_file_name);
+	       return pkg->installed_files;
+	  }
+
+	  list_file = fopen(list_file_name, "r");
+	  if (list_file == NULL) {
+	       fprintf(stderr, "WARNING: Cannot open %s: %s\n",
+		       list_file_name, strerror(errno));
+	       free(list_file_name);
+	       return pkg->installed_files;
+	  }
+	  free(list_file_name);
+     }
+
+     rootdirlen = strlen( pkg->dest->root_dir );
+     while (1) {
+	  char *file_name;
+	
+	  line = file_read_line_alloc(list_file);
+	  if (line == NULL) {
+	       break;
+	  }
+	  str_chomp(line);
+	  file_name = line;
+
+	  /* Take pains to avoid uglies like "/./" in the middle of file_name. */
+	  if( strncmp( pkg->dest->root_dir, 
+		       file_name, 
+		       rootdirlen ) ) {
+	       if (*file_name == '.') {
+		    file_name++;
+	       }
+	       if (*file_name == '/') {
+		    file_name++;
+	       }
+
+	       /* Freed in pkg_free_installed_files */
+	       sprintf_alloc(&installed_file_name, "%s%s", pkg->dest->root_dir, file_name);
+	  } else {
+	       // already contains root_dir as header -> ABSOLUTE
+	       sprintf_alloc(&installed_file_name, "%s", file_name);
+	  }
+	  str_list_append(pkg->installed_files, installed_file_name);
+	  free(line);
+     }
+
+     fclose(list_file);
+
+     return pkg->installed_files;
+}
+
+/* XXX: CLEANUP: This function and it's counterpart,
+   (pkg_get_installed_files), do not match our init/deinit naming
+   convention. Nor the alloc/free convention. But, then again, neither
+   of these conventions currrently fit the way these two functions
+   work. */
+int pkg_free_installed_files(pkg_t *pkg)
+{
+     str_list_elt_t *iter;
+
+     pkg->installed_files_ref_cnt--;
+     if (pkg->installed_files_ref_cnt > 0) {
+	  return 0;
+     }
+
+     if (pkg->installed_files) {
+
+	  for (iter = pkg->installed_files->head; iter; iter = iter->next) {
+	       /* malloced in pkg_get_installed_files */
+	       free (iter->data);
+	       iter->data = NULL;
+	  }
+
+	  str_list_deinit(pkg->installed_files);
+     }
+
+     pkg->installed_files = NULL;
+
+     return 0;
+}
+
+int pkg_remove_installed_files_list(opkg_conf_t *conf, pkg_t *pkg)
+{
+     int err;
+     char *list_file_name;
+
+     //I don't think pkg_free_installed_files should be called here. Jamey
+     //pkg_free_installed_files(pkg);
+
+     sprintf_alloc(&list_file_name, "%s/%s.list",
+		   pkg->dest->info_dir, pkg->name);
+     if (!conf->noaction) {
+	  err = unlink(list_file_name);
+	  free(list_file_name);
+
+	  if (err) {
+	       return errno;
+	  }
+     }
+     return 0;
+}
+
+conffile_t *pkg_get_conffile(pkg_t *pkg, const char *file_name)
+{
+     conffile_list_elt_t *iter;
+     conffile_t *conffile;
+
+     if (pkg == NULL) {
+	  return NULL;
+     }
+
+     for (iter = pkg->conffiles.head; iter; iter = iter->next) {
+	  conffile = iter->data;
+
+	  if (strcmp(conffile->name, file_name) == 0) {
+	       return conffile;
+	  }
+     }
+
+     return NULL;
+}
+
+int pkg_run_script(opkg_conf_t *conf, pkg_t *pkg,
+		   const char *script, const char *args)
+{
+     int err;
+     char *path;
+     char *cmd;
+
+     /* XXX: FEATURE: When conf->offline_root is set, we should run the
+	maintainer script within a chroot environment. */
+
+     /* Installed packages have scripts in pkg->dest->info_dir, uninstalled packages
+	have scripts in pkg->tmp_unpack_dir. */
+     if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
+	  if (pkg->dest == NULL) {
+	       fprintf(stderr, "%s: ERROR: installed package %s has a NULL dest\n",
+		       __FUNCTION__, pkg->name);
+	       return EINVAL;
+	  }
+	  sprintf_alloc(&path, "%s/%s.%s", pkg->dest->info_dir, pkg->name, script);
+     } else {
+	  if (pkg->tmp_unpack_dir == NULL) {
+	       fprintf(stderr, "%s: ERROR: uninstalled package %s has a NULL tmp_unpack_dir\n",
+		       __FUNCTION__, pkg->name);
+	       return EINVAL;
+	  }
+	  sprintf_alloc(&path, "%s/%s", pkg->tmp_unpack_dir, script);
+     }
+
+     opkg_message(conf, OPKG_INFO, "Running script %s\n", path);
+     if (conf->noaction) return 0;
+
+     /* XXX: CLEANUP: There must be a better way to handle maintainer
+	scripts when running with offline_root mode and/or a dest other
+	than '/'. I've been playing around with some clever chroot
+	tricks and I might come up with something workable. */
+     if (conf->offline_root) {
+	  setenv("OPKG_OFFLINE_ROOT", conf->offline_root, 1);
+     }
+
+     setenv("PKG_ROOT",
+	    pkg->dest ? pkg->dest->root_dir : conf->default_dest->root_dir, 1);
+
+     if (! file_exists(path)) {
+	  free(path);
+	  return 0;
+     }
+
+     if (conf->offline_root) {
+	  fprintf(stderr, "(offline root mode: not running %s.%s)\n", pkg->name, script);
+	  free(path);
+	  return 0;
+     }
+
+     sprintf_alloc(&cmd, "%s %s", path, args);
+     free(path);
+
+     err = xsystem(cmd);
+     free(cmd);
+
+     if (err) {
+	  fprintf(stderr, "%s script returned status %d\n", script, err);
+	  return err;
+     }
+
+     return 0;
+}
+
+char *pkg_state_want_to_str(pkg_state_want_t sw)
+{
+     int i;
+
+     for (i=0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
+	  if (pkg_state_want_map[i].value == sw) {
+	       return strdup(pkg_state_want_map[i].str);
+	  }
+     }
+
+     fprintf(stderr, "%s: ERROR: Illegal value for state_want: %d\n",
+	     __FUNCTION__, sw);
+     return strdup("<STATE_WANT_UNKNOWN>");
+}
+
+pkg_state_want_t pkg_state_want_from_str(char *str)
+{
+     int i;
+
+     for (i=0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
+	  if (strcmp(str, pkg_state_want_map[i].str) == 0) {
+	       return pkg_state_want_map[i].value;
+	  }
+     }
+
+     fprintf(stderr, "%s: ERROR: Illegal value for state_want string: %s\n",
+	     __FUNCTION__, str);
+     return SW_UNKNOWN;
+}
+
+char *pkg_state_flag_to_str(pkg_state_flag_t sf)
+{
+     int i;
+     int len = 3; /* ok\000 is minimum */
+     char *str = NULL;
+
+     /* clear the temporary flags before converting to string */
+     sf &= SF_NONVOLATILE_FLAGS;
+
+     if (sf == 0) {
+	  return strdup("ok");
+     } else {
+
+	  for (i=0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
+	       if (sf & pkg_state_flag_map[i].value) {
+		    len += strlen(pkg_state_flag_map[i].str) + 1;
+	       }
+	  }
+	  str = malloc(len);
+          if ( str == NULL ) {
+	      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+              return NULL;
+          }
+	  str[0] = 0;
+	  for (i=0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
+	       if (sf & pkg_state_flag_map[i].value) {
+		    strcat(str, pkg_state_flag_map[i].str);
+		    strcat(str, ",");
+	       }
+	  }
+	  len = strlen(str);
+	  str[len-1] = 0; /* squash last comma */
+	  return str;
+     }
+}
+
+pkg_state_flag_t pkg_state_flag_from_str(const char *str)
+{
+     int i;
+     int sf = SF_OK;
+
+     if (strcmp(str, "ok") == 0) {
+	  return SF_OK;
+     }
+     for (i=0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
+	  const char *sfname = pkg_state_flag_map[i].str;
+	  int sfname_len = strlen(sfname);
+	  if (strncmp(str, sfname, sfname_len) == 0) {
+	       sf |= pkg_state_flag_map[i].value;
+	       str += sfname_len;
+	       if (str[0] == ',') {
+		    str++;
+	       } else {
+		    break;
+	       }
+	  }
+     }
+
+     return sf;
+}
+
+char *pkg_state_status_to_str(pkg_state_status_t ss)
+{
+     int i;
+
+     for (i=0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
+	  if (pkg_state_status_map[i].value == ss) {
+	       return strdup(pkg_state_status_map[i].str);
+	  }
+     }
+
+     fprintf(stderr, "%s: ERROR: Illegal value for state_status: %d\n",
+	     __FUNCTION__, ss);
+     return strdup("<STATE_STATUS_UNKNOWN>");
+}
+
+pkg_state_status_t pkg_state_status_from_str(const char *str)
+{
+     int i;
+
+     for (i=0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
+	  if (strcmp(str, pkg_state_status_map[i].str) == 0) {
+	       return pkg_state_status_map[i].value;
+	  }
+     }
+
+     fprintf(stderr, "%s: ERROR: Illegal value for state_status string: %s\n",
+	     __FUNCTION__, str);
+     return SS_NOT_INSTALLED;
+}
+
+int pkg_arch_supported(opkg_conf_t *conf, pkg_t *pkg)
+{
+     nv_pair_list_elt_t *l;
+
+     if (!pkg->architecture)
+	  return 1;
+
+     l = conf->arch_list.head;
+
+     while (l) {
+	  nv_pair_t *nv = l->data;
+	  if (strcmp(nv->name, pkg->architecture) == 0) {
+	       opkg_message(conf, OPKG_DEBUG, "arch %s (priority %s) supported for pkg %s\n", nv->name, nv->value, pkg->name);
+	       return 1;
+	  }
+	  l = l->next;
+     }
+
+     opkg_message(conf, OPKG_DEBUG, "arch %s unsupported for pkg %s\n", pkg->architecture, pkg->name);
+     return 0;
+}
+
+int pkg_get_arch_priority(opkg_conf_t *conf, const char *archname)
+{
+     nv_pair_list_elt_t *l;
+
+     l = conf->arch_list.head;
+
+     while (l) {
+	  nv_pair_t *nv = l->data;
+	  if (strcmp(nv->name, archname) == 0) {
+	       int priority = strtol(nv->value, NULL, 0);
+	       return priority;
+	  }
+	  l = l->next;
+     }
+     return 0;
+}
+
+int pkg_info_preinstall_check(opkg_conf_t *conf)
+{
+     int i;
+     hash_table_t *pkg_hash = &conf->pkg_hash;
+     pkg_vec_t *available_pkgs = pkg_vec_alloc();
+     pkg_vec_t *installed_pkgs = pkg_vec_alloc();
+
+     opkg_message(conf, OPKG_INFO, "pkg_info_preinstall_check: updating arch priority for each package\n");
+     pkg_hash_fetch_available(pkg_hash, available_pkgs);
+     /* update arch_priority for each package */
+     for (i = 0; i < available_pkgs->len; i++) {
+	  pkg_t *pkg = available_pkgs->pkgs[i];
+	  int arch_priority = 1;
+	  if (!pkg)
+	       continue;
+	  // opkg_message(conf, OPKG_DEBUG2, " package %s version=%s arch=%p:", pkg->name, pkg->version, pkg->architecture);
+	  if (pkg->architecture) 
+	       arch_priority = pkg_get_arch_priority(conf, pkg->architecture);
+	  else 
+	       opkg_message(conf, OPKG_ERROR, "pkg_info_preinstall_check: no architecture for package %s\n", pkg->name);
+	  // opkg_message(conf, OPKG_DEBUG2, "%s arch_priority=%d\n", pkg->architecture, arch_priority);
+	  pkg->arch_priority = arch_priority;
+     }
+
+     for (i = 0; i < available_pkgs->len; i++) {
+	  pkg_t *pkg = available_pkgs->pkgs[i];
+	  if (!pkg->arch_priority && (pkg->state_flag || (pkg->state_want != SW_UNKNOWN))) {
+	       /* clear flags and want for any uninstallable package */
+	       opkg_message(conf, OPKG_NOTICE, "Clearing state_want and state_flag for pkg=%s (arch_priority=%d flag=%d want=%d)\n", 
+			    pkg->name, pkg->arch_priority, pkg->state_flag, pkg->state_want);
+	       pkg->state_want = SW_UNKNOWN;
+	       pkg->state_flag = 0;
+	  }
+     }
+     pkg_vec_free(available_pkgs);
+
+     /* update the file owner data structure */
+     opkg_message(conf, OPKG_INFO, "pkg_info_preinstall_check: update file owner list\n");
+     pkg_hash_fetch_all_installed(pkg_hash, installed_pkgs);
+     for (i = 0; i < installed_pkgs->len; i++) {
+	  pkg_t *pkg = installed_pkgs->pkgs[i];
+	  str_list_t *installed_files = pkg_get_installed_files(pkg); /* this causes installed_files to be cached */
+	  str_list_elt_t *iter;
+	  if (installed_files == NULL) {
+	       opkg_message(conf, OPKG_ERROR, "No installed files for pkg %s\n", pkg->name);
+	       break;
+	  }
+	  for (iter = installed_files->head; iter; iter = iter->next) {
+	       char *installed_file = iter->data;
+	       // opkg_message(conf, OPKG_DEBUG2, "pkg %s: file=%s\n", pkg->name, installed_file);
+	       file_hash_set_file_owner(conf, installed_file, pkg);
+	  }
+     }
+     pkg_vec_free(installed_pkgs);
+
+     return 0;
+}
+
+struct pkg_write_filelist_data {
+     opkg_conf_t *conf;
+     pkg_t *pkg;
+     FILE *stream;
+};
+
+void pkg_write_filelist_helper(const char *key, void *entry_, void *data_)
+{
+     struct pkg_write_filelist_data *data = data_;
+     pkg_t *entry = entry_;
+     if (entry == data->pkg) {
+	  fprintf(data->stream, "%s\n", key);
+     }
+}
+
+int pkg_write_filelist(opkg_conf_t *conf, pkg_t *pkg)
+{
+     struct pkg_write_filelist_data data;
+     char *list_file_name = NULL;
+     int err = 0;
+
+     if (!pkg) {
+	  opkg_message(conf, OPKG_ERROR, "Null pkg\n");
+	  return -EINVAL;
+     }
+     opkg_message(conf, OPKG_INFO,
+		  "    creating %s.list file\n", pkg->name);
+     sprintf_alloc(&list_file_name, "%s/%s.list", pkg->dest->info_dir, pkg->name);
+     if (!list_file_name) {
+	  opkg_message(conf, OPKG_ERROR, "Failed to alloc list_file_name\n");
+	  return -ENOMEM;
+     }
+     opkg_message(conf, OPKG_INFO,
+		  "    creating %s file for pkg %s\n", list_file_name, pkg->name);
+     data.stream = fopen(list_file_name, "w");
+     if (!data.stream) {
+	  opkg_message(conf, OPKG_ERROR, "Could not open %s for writing: %s\n",
+		       list_file_name, strerror(errno));
+		       return errno;
+     }
+     data.pkg = pkg;
+     data.conf = conf;
+     hash_table_foreach(&conf->file_hash, pkg_write_filelist_helper, &data);
+     fclose(data.stream);
+     free(list_file_name);
+
+     return err;
+}
+
+int pkg_write_changed_filelists(opkg_conf_t *conf)
+{
+     pkg_vec_t *installed_pkgs = pkg_vec_alloc();
+     hash_table_t *pkg_hash = &conf->pkg_hash;
+     int i;
+     int err;
+     if (conf->noaction)
+	  return 0;
+
+     opkg_message(conf, OPKG_INFO, "%s: saving changed filelists\n", __FUNCTION__);
+     pkg_hash_fetch_all_installed(pkg_hash, installed_pkgs);
+     for (i = 0; i < installed_pkgs->len; i++) {
+	  pkg_t *pkg = installed_pkgs->pkgs[i];
+	  if (pkg->state_flag & SF_FILELIST_CHANGED) {
+               opkg_message(conf, OPKG_DEBUG, "Calling pkg_write_filelist for pkg=%s from %s\n", pkg->name, __FUNCTION__);
+	       err = pkg_write_filelist(conf, pkg);
+	       if (err)
+		    opkg_message(conf, OPKG_NOTICE, "pkg_write_filelist pkg=%s returned %d\n", pkg->name, err);
+	  }
+     }
+     return 0;
+}
diff --git a/libopkg/pkg.h b/libopkg/pkg.h
new file mode 100644
index 0000000..ffb969b
--- /dev/null
+++ b/libopkg/pkg.h
@@ -0,0 +1,236 @@
+/* pkg.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_H
+#define PKG_H
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "pkg_vec.h"
+#include "str_list.h"
+#include "pkg_src.h"
+#include "pkg_dest.h"
+#include "opkg_conf.h"
+#include "conffile_list.h"
+
+struct opkg_conf;
+
+
+#define ARRAY_SIZE(array) sizeof(array) / sizeof((array)[0])
+
+/* I think "Size" is currently the shortest field name */
+#define PKG_MINIMUM_FIELD_NAME_LEN 4
+
+enum pkg_state_want
+{
+    SW_UNKNOWN = 1,
+    SW_INSTALL,
+    SW_DEINSTALL,
+    SW_PURGE,
+    SW_LAST_STATE_WANT
+};
+typedef enum pkg_state_want pkg_state_want_t;
+
+enum pkg_state_flag
+{
+    SF_OK        = 0,
+    SF_REINSTREQ = 1,
+    SF_HOLD      = 2,  /* do not upgrade version */
+    SF_REPLACE   = 4,  /* replace this package */
+    SF_NOPRUNE   = 8,  /* do not remove obsolete files */
+    SF_PREFER    = 16, /* prefer this version */
+    SF_OBSOLETE  = 32, /* old package in upgrade pair */
+    SF_MARKED    = 64, /* temporary mark */
+    SF_FILELIST_CHANGED = 128, /* needs filelist written */
+    SF_USER      = 256,
+    SF_LAST_STATE_FLAG
+};
+typedef enum pkg_state_flag pkg_state_flag_t;
+#define SF_NONVOLATILE_FLAGS (SF_HOLD|SF_NOPRUNE|SF_PREFER|SF_OBSOLETE|SF_USER)
+
+enum pkg_state_status
+{
+    SS_NOT_INSTALLED = 1,
+    SS_UNPACKED,
+    SS_HALF_CONFIGURED,
+    SS_INSTALLED,
+    SS_HALF_INSTALLED,
+    SS_CONFIG_FILES,
+    SS_POST_INST_FAILED,
+    SS_REMOVAL_FAILED,
+    SS_LAST_STATE_STATUS
+};
+typedef enum pkg_state_status pkg_state_status_t;
+
+struct abstract_pkg{
+    char * name;
+    int dependencies_checked;
+    pkg_vec_t * pkgs;
+    pkg_state_status_t state_status;
+    pkg_state_flag_t state_flag;
+    struct abstract_pkg ** depended_upon_by; /* @@@@ this should be abstract_pkg_vec_t -Jamey */
+    abstract_pkg_vec_t * provided_by;
+    abstract_pkg_vec_t * replaced_by;
+};
+
+#include "pkg_depends.h"
+
+/* XXX: CLEANUP: I'd like to clean up pkg_t in several ways:
+
+   The 3 version fields should go into a single version struct. (This
+   is especially important since, currently, pkg->version can easily
+   be mistaken for pkg_verson_str_alloc(pkg) although they are very
+   distinct. This has been the source of multiple bugs.
+
+   The 3 state fields could possibly also go into their own struct.
+
+   All fields which deal with lists of packages, (Depends,
+   Pre-Depends, Provides, Suggests, Recommends, Enhances), should each
+   be handled by a single struct in pkg_t
+
+   All string fields for which there is a small set of possible
+   values, (section, maintainer, architecture, maybe version?), that
+   are reused among different packages -- for all such packages we
+   should move from "char *"s to some atom datatype to share data
+   storage and use less memory. We might even do reference counting,
+   but probably not since most often we only create new pkg_t structs,
+   we don't often free them.  */
+struct pkg
+{
+     char *name;
+     unsigned long epoch;
+     char *version;
+     char *revision;
+     char *familiar_revision;
+     pkg_src_t *src;
+     pkg_dest_t *dest;
+     char *architecture;
+     char *section;
+     char *maintainer;
+     char *description;
+     pkg_state_want_t state_want;
+     pkg_state_flag_t state_flag;
+     pkg_state_status_t state_status;
+     char **depends_str;
+     int depends_count;
+     char **pre_depends_str;
+     int pre_depends_count;
+     char **recommends_str;
+     int recommends_count;
+     char **suggests_str;
+     int suggests_count;
+     compound_depend_t * depends;
+
+     /* Abhaya: new conflicts */
+     char **conflicts_str;
+     compound_depend_t * conflicts;
+     int conflicts_count;
+	
+     char **replaces_str;
+     int replaces_count;
+     abstract_pkg_t ** replaces;
+
+     char **provides_str;
+     int provides_count;
+     abstract_pkg_t ** provides;
+
+     abstract_pkg_t *parent;
+
+     pkg_t *old_pkg; /* during upgrade, points from installee to previously installed */
+
+     char *filename;
+     char *local_filename;
+     char *url;
+     char *tmp_unpack_dir;
+     char *md5sum;
+     char *size;
+     char *installed_size;
+     char *priority;
+     char *source;
+     conffile_list_t conffiles;
+     time_t installed_time;
+     /* As pointer for lazy evaluation */
+     str_list_t *installed_files;
+     /* XXX: CLEANUP: I'd like to perhaps come up with a better
+	mechanism to avoid the problem here, (which is that the
+	installed_files list was being freed from an inner loop while
+	still being used within an outer loop. */
+     int installed_files_ref_cnt;
+     int essential;
+     int arch_priority;
+/* Adding this flag, to "force" opkg to choose a "provided_by_hand" package, if there are multiple choice */
+     int provided_by_hand;
+
+     /* this flag specifies whether the package was installed to satisfy another
+      * package's dependancies */
+     int auto_installed;
+};
+
+pkg_t *pkg_new(void);
+int pkg_init(pkg_t *pkg);
+void pkg_deinit(pkg_t *pkg);
+int pkg_init_from_file(pkg_t *pkg, const char *filename);
+abstract_pkg_t *abstract_pkg_new(void);
+int abstract_pkg_init(abstract_pkg_t *ab_pkg);
+
+/* 
+ * merges fields from newpkg into oldpkg.
+ * Forcibly sets oldpkg state_status, state_want and state_flags if set_status is nonzero 
+ */
+int pkg_merge(pkg_t *oldpkg, pkg_t *newpkg, int set_status);
+
+char *pkg_version_str_alloc(pkg_t *pkg);
+
+int pkg_compare_versions(const pkg_t *pkg, const pkg_t *ref_pkg);
+int pkg_name_version_and_architecture_compare(void *a, void *b);
+int abstract_pkg_name_compare(void *a, void *b);
+
+char * pkg_formatted_info(pkg_t *pkg );
+char * pkg_formatted_field(pkg_t *pkg, const char *field );
+
+void set_flags_from_control(opkg_conf_t *conf, pkg_t *pkg);
+
+void pkg_print_info(pkg_t *pkg, FILE *file);
+void pkg_print_status(pkg_t * pkg, FILE * file);
+void pkg_print_field(pkg_t *pkg, FILE *file, const char *field);
+str_list_t *pkg_get_installed_files(pkg_t *pkg);
+int pkg_free_installed_files(pkg_t *pkg);
+int pkg_remove_installed_files_list(opkg_conf_t *conf, pkg_t *pkg);
+conffile_t *pkg_get_conffile(pkg_t *pkg, const char *file_name);
+int pkg_run_script(struct opkg_conf *conf, pkg_t *pkg,
+		   const char *script, const char *args);
+
+/* enum mappings */
+char *pkg_state_want_to_str(pkg_state_want_t sw);
+pkg_state_want_t pkg_state_want_from_str(char *str);
+char *pkg_state_flag_to_str(pkg_state_flag_t sf);
+pkg_state_flag_t pkg_state_flag_from_str(const char *str);
+char *pkg_state_status_to_str(pkg_state_status_t ss);
+pkg_state_status_t pkg_state_status_from_str(const char *str);
+
+int pkg_version_satisfied(pkg_t *it, pkg_t *ref, const char *op);
+
+int pkg_arch_supported(opkg_conf_t *conf, pkg_t *pkg);
+int pkg_info_preinstall_check(opkg_conf_t *conf);
+int pkg_free_installed_files(pkg_t *pkg);
+
+int pkg_write_filelist(opkg_conf_t *conf, pkg_t *pkg);
+int pkg_write_changed_filelists(opkg_conf_t *conf);
+
+#endif
diff --git a/libopkg/pkg_depends.c b/libopkg/pkg_depends.c
new file mode 100644
index 0000000..7ebd04e
--- /dev/null
+++ b/libopkg/pkg_depends.c
@@ -0,0 +1,1033 @@
+/* pkg_depends.c - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+#include <ctype.h>
+   
+#include "pkg.h"
+#include "opkg_utils.h"
+#include "pkg_hash.h"
+#include "opkg_message.h"
+#include "pkg_parse.h"
+#include "hash_table.h"
+
+static int parseDepends(compound_depend_t *compound_depend, hash_table_t * hash, char * depend_str);
+static depend_t * depend_init(void);
+static void depend_deinit(depend_t *d);
+static char ** add_unresolved_dep(pkg_t * pkg, char ** the_lost, int ref_ndx);
+static char ** merge_unresolved(char ** oldstuff, char ** newstuff);
+static int is_pkg_in_pkg_vec(pkg_vec_t * vec, pkg_t * pkg);
+
+static int pkg_installed_and_constraint_satisfied(pkg_t *pkg, void *cdata)
+{
+     depend_t *depend = (depend_t *)cdata;
+     if ((pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) && version_constraints_satisfied(depend, pkg))
+	  return 1;
+     else
+	  return 0;
+}
+
+static int pkg_constraint_satisfied(pkg_t *pkg, void *cdata)
+{
+     depend_t *depend = (depend_t *)cdata;
+#if 0
+     pkg_t * temp = pkg_new();
+     int comparison;
+     parseVersion(temp, depend->version);
+     comparison = pkg_compare_versions(pkg, temp);
+     free(temp);
+
+     fprintf(stderr, "%s: pkg=%s pkg->version=%s constraint=%p type=%d version=%s comparison=%d satisfied=%d\n", 
+	     __FUNCTION__, pkg->name, pkg->version, 
+	     depend, depend->constraint, depend->version,
+	     comparison, version_constraints_satisfied(depend, pkg));
+#endif
+     if (version_constraints_satisfied(depend, pkg))
+	  return 1;
+     else
+	  return 0;
+}
+
+/* returns ndependences or negative error value */ 
+int pkg_hash_fetch_unsatisfied_dependencies(opkg_conf_t *conf, pkg_t * pkg, 
+					    pkg_vec_t *unsatisfied, char *** unresolved)
+{
+     pkg_t * satisfier_entry_pkg;
+     register int i, j, k;
+     int count, found;
+     char ** the_lost;
+     abstract_pkg_t * ab_pkg;
+
+     /* 
+      * this is a setup to check for redundant/cyclic dependency checks, 
+      * which are marked at the abstract_pkg level
+      */
+     if (!(ab_pkg = pkg->parent)) {
+	  fprintf(stderr, "%s:%d: something terribly wrong with pkg %s\n", __FUNCTION__, __LINE__, pkg->name);
+	  *unresolved = NULL;
+	  return 0;
+     }
+     if (ab_pkg->dependencies_checked) {    /* avoid duplicate or cyclic checks */
+	  *unresolved = NULL;
+	  return 0;
+     } else { 
+	  ab_pkg->dependencies_checked = 1;  /* mark it for subsequent visits */
+     }
+     /**/
+
+     count = pkg->pre_depends_count + pkg->depends_count + pkg->recommends_count + pkg->suggests_count;
+     if (!count){
+	  *unresolved = NULL;
+	  return 0;
+     }
+
+     the_lost = NULL;
+	
+     /* foreach dependency */
+     for (i = 0; i < count; i++) {
+	  compound_depend_t * compound_depend = &pkg->depends[i];
+	  depend_t ** possible_satisfiers = compound_depend->possibilities;;
+	  found = 0;
+	  satisfier_entry_pkg = NULL;
+
+	  if (compound_depend->type == GREEDY_DEPEND) {
+	       /* foreach possible satisfier */
+	       for (j = 0; j < compound_depend->possibility_count; j++) {
+		    /* foreach provided_by, which includes the abstract_pkg itself */
+		    abstract_pkg_t *abpkg = possible_satisfiers[j]->pkg;
+		    abstract_pkg_vec_t *ab_provider_vec = abpkg->provided_by;
+		    int nposs = ab_provider_vec->len;
+		    abstract_pkg_t **ab_providers = ab_provider_vec->pkgs; 
+		    int l;
+		    for (l = 0; l < nposs; l++) {
+			 pkg_vec_t *test_vec = ab_providers[l]->pkgs;
+			 /* if no depends on this one, try the first package that Provides this one */
+			 if (!test_vec){   /* no pkg_vec hooked up to the abstract_pkg!  (need another feed?) */
+			      continue;
+			 }
+	      
+			 /* cruise this possiblity's pkg_vec looking for an installed version */
+			 for (k = 0; k < test_vec->len; k++) {
+			      pkg_t *pkg_scout = test_vec->pkgs[k];
+			      /* not installed, and not already known about? */
+			      if ((pkg_scout->state_want != SW_INSTALL)
+				  && !pkg_scout->parent->dependencies_checked
+				  && !is_pkg_in_pkg_vec(unsatisfied, pkg_scout)) {
+				   char ** newstuff = NULL;
+				   int rc;
+				   pkg_vec_t *tmp_vec = pkg_vec_alloc ();
+				   /* check for not-already-installed dependencies */
+				   rc = pkg_hash_fetch_unsatisfied_dependencies(conf, 
+										pkg_scout, 
+										tmp_vec,
+										&newstuff);
+				   if (newstuff == NULL) {
+					int i;
+					int ok = 1;
+					for (i = 0; i < rc; i++) {
+					    pkg_t *p = tmp_vec->pkgs[i];
+					    if (p->state_want == SW_INSTALL)
+						continue;
+					    opkg_message(conf, OPKG_DEBUG, "not installing %s due to requirement for %s\n", pkg_scout->name, p->name);
+					    ok = 0;
+					    break;
+					}
+					pkg_vec_free (tmp_vec);
+					if (ok) {
+					    /* mark this one for installation */
+					    opkg_message(conf, OPKG_NOTICE, "Adding satisfier for greedy dependence: %s\n", pkg_scout->name);
+					    pkg_vec_insert(unsatisfied, pkg_scout);
+					}
+				   } else  {
+					opkg_message(conf, OPKG_DEBUG, "not installing %s due to broken depends \n", pkg_scout->name);
+					free (newstuff);
+				   }
+			      }
+			 }
+		    }
+	       }
+
+	       continue;
+	  }
+
+	  /* foreach possible satisfier, look for installed package  */
+	  for (j = 0; j < compound_depend->possibility_count; j++) {
+	       /* foreach provided_by, which includes the abstract_pkg itself */
+	       depend_t *dependence_to_satisfy = possible_satisfiers[j];
+	       abstract_pkg_t *satisfying_apkg = possible_satisfiers[j]->pkg;
+	       pkg_t *satisfying_pkg = 
+		    pkg_hash_fetch_best_installation_candidate(conf, satisfying_apkg, 
+							       pkg_installed_and_constraint_satisfied, 
+							       dependence_to_satisfy, 1);
+               /* Being that I can't test constraing in pkg_hash, I will test it here */
+	       if (satisfying_pkg != NULL) {
+                  if (!pkg_installed_and_constraint_satisfied ( satisfying_pkg,dependence_to_satisfy)) {
+	              satisfying_pkg = NULL;
+                  }
+               }
+	       opkg_message(conf, OPKG_DEBUG, "%s:%d: satisfying_pkg=%p \n", __FILE__, __LINE__, satisfying_pkg);
+	       if (satisfying_pkg != NULL) {
+		    found = 1;
+		    break;
+	       }
+
+	  }
+	  /* if nothing installed matches, then look for uninstalled satisfier */
+	  if (!found) {
+	       /* foreach possible satisfier, look for installed package  */
+	       for (j = 0; j < compound_depend->possibility_count; j++) {
+		    /* foreach provided_by, which includes the abstract_pkg itself */
+		    depend_t *dependence_to_satisfy = possible_satisfiers[j];
+		    abstract_pkg_t *satisfying_apkg = possible_satisfiers[j]->pkg;
+		    pkg_t *satisfying_pkg = 
+			 pkg_hash_fetch_best_installation_candidate(conf, satisfying_apkg, 
+								    pkg_constraint_satisfied, 
+								    dependence_to_satisfy, 1);
+                    /* Being that I can't test constraing in pkg_hash, I will test it here too */
+	            if (satisfying_pkg != NULL) {
+                         if (!pkg_constraint_satisfied ( satisfying_pkg,dependence_to_satisfy)) {
+                            satisfying_pkg = NULL;
+                         }
+                    }
+
+		    /* user request overrides package recommendation */
+		    if (satisfying_pkg != NULL
+			&& (compound_depend->type == RECOMMEND || compound_depend->type == SUGGEST)
+			&& (satisfying_pkg->state_want == SW_DEINSTALL || satisfying_pkg->state_want == SW_PURGE)) {
+			 opkg_message (conf, OPKG_NOTICE, "%s: ignoring recommendation for %s at user request\n",
+				       pkg->name, satisfying_pkg->name);
+			 continue;
+		    }
+
+		    opkg_message(conf, OPKG_DEBUG, "%s:%d: satisfying_pkg=%p\n", __FILE__, __LINE__, satisfying_pkg);
+		    if (satisfying_pkg != NULL) {
+			 satisfier_entry_pkg = satisfying_pkg;
+			 break;
+		    }
+	       }
+	  }
+
+	  /* we didn't find one, add something to the unsatisfied vector */
+	  if (!found) {
+	       if (!satisfier_entry_pkg) {
+		    /* failure to meet recommendations is not an error */
+		    if (compound_depend->type != RECOMMEND && compound_depend->type != SUGGEST)
+			 the_lost = add_unresolved_dep(pkg, the_lost, i);
+		    else
+			 opkg_message (conf, OPKG_NOTICE, "%s: unsatisfied recommendation for %s\n",
+				       pkg->name, compound_depend->possibilities[0]->pkg->name);
+	       }
+	       else {
+		    if (compound_depend->type == SUGGEST) {
+			 /* just mention it politely */
+			 opkg_message (conf, OPKG_NOTICE, "package %s suggests installing %s\n",
+				       pkg->name, satisfier_entry_pkg->name);
+		    } else {
+			 char ** newstuff = NULL;
+			 
+			 if (satisfier_entry_pkg != pkg &&
+			     !is_pkg_in_pkg_vec(unsatisfied, satisfier_entry_pkg)) {
+			      pkg_vec_insert(unsatisfied, satisfier_entry_pkg);
+			      pkg_hash_fetch_unsatisfied_dependencies(conf, 
+								      satisfier_entry_pkg, 
+								      unsatisfied,
+								      &newstuff);
+			      the_lost = merge_unresolved(the_lost, newstuff);
+			 }
+		    }
+	       }
+	  }
+     }
+     *unresolved = the_lost;
+
+     return unsatisfied->len;
+}
+
+/*checking for conflicts !in replaces 
+  If a packages conflicts with another but is also replacing it, I should not consider it a 
+  really conflicts 
+  returns 0 if conflicts <> replaces or 1 if conflicts == replaces 
+*/
+int is_pkg_a_replaces(pkg_t *pkg_scout,pkg_t *pkg)
+{
+    int i ;
+    int replaces_count = pkg->replaces_count;
+    abstract_pkg_t **replaces;
+
+    if (pkg->replaces_count==0)    // No replaces, it's surely a conflict
+        return 0;
+
+    replaces = pkg->replaces;
+
+    for (i = 0; i < replaces_count; i++) {
+        if (strcmp(pkg_scout->name,pkg->replaces[i]->name)==0) {      // Found
+            opkg_message(NULL, OPKG_DEBUG2, "Seems I've found a replace %s %s \n",pkg_scout->name,pkg->replaces[i]->name);
+            return 1;
+        }
+    }
+    return 0;
+
+}
+
+
+/* Abhaya: added support for conflicts */
+pkg_vec_t * pkg_hash_fetch_conflicts(hash_table_t * hash, pkg_t * pkg)
+{
+    pkg_vec_t * installed_conflicts, * test_vec;
+    compound_depend_t * conflicts;
+    depend_t ** possible_satisfiers;
+    depend_t * possible_satisfier;
+    register int i, j, k;
+    int count;
+    abstract_pkg_t * ab_pkg;
+    pkg_t **pkg_scouts; 
+    pkg_t *pkg_scout; 
+
+    /* 
+     * this is a setup to check for redundant/cyclic dependency checks, 
+     * which are marked at the abstract_pkg level
+     */
+    if(!(ab_pkg = pkg->parent)){
+	fprintf(stderr, "dependency check error.  pkg %s isn't in hash table\n", pkg->name);
+	return (pkg_vec_t *)NULL;
+    }
+
+    conflicts = pkg->conflicts;
+    if(!conflicts){
+	return (pkg_vec_t *)NULL;
+    }
+    installed_conflicts = pkg_vec_alloc();
+
+    count = pkg->conflicts_count;
+
+
+
+    /* foreach conflict */
+    for(i = 0; i < pkg->conflicts_count; i++){
+
+	possible_satisfiers = conflicts->possibilities;
+
+	/* foreach possible satisfier */
+	for(j = 0; j < conflicts->possibility_count; j++){
+            possible_satisfier = possible_satisfiers[j];
+            if (!possible_satisfier)
+                fprintf(stderr, "%s:%d: possible_satisfier is null\n", __FUNCTION__, __LINE__);
+            if (!possible_satisfier->pkg)
+                fprintf(stderr, "%s:%d: possible_satisfier->pkg is null\n", __FUNCTION__, __LINE__);
+	    test_vec = possible_satisfier->pkg->pkgs;
+	    if (test_vec) {
+                /* pkg_vec found, it is an actual package conflict
+		 * cruise this possiblity's pkg_vec looking for an installed version */
+		pkg_scouts = test_vec->pkgs;
+		for(k = 0; k < test_vec->len; k++){
+                    pkg_scout = pkg_scouts[k];
+                    if (!pkg_scout) {
+                        fprintf(stderr,  "%s: null pkg scout\n", __FUNCTION__);
+                        continue; 
+                    }
+		    if ((pkg_scout->state_status == SS_INSTALLED || pkg_scout->state_want == SW_INSTALL) &&
+		       version_constraints_satisfied(possible_satisfier, pkg_scout) && !is_pkg_a_replaces(pkg_scout,pkg)){
+ 	 	        if (!is_pkg_in_pkg_vec(installed_conflicts, pkg_scout)){
+			    pkg_vec_insert(installed_conflicts, pkg_scout);
+			}
+		    }
+		}
+	    }
+	}
+	conflicts++;
+    }
+
+    if (installed_conflicts->len)
+	    return installed_conflicts;
+    pkg_vec_free(installed_conflicts);
+	return (pkg_vec_t *)NULL;
+}
+
+int version_constraints_satisfied(depend_t * depends, pkg_t * pkg)
+{
+    pkg_t * temp;
+    int comparison;
+
+    if(depends->constraint == NONE)
+	return 1;
+
+    temp = pkg_new();
+
+    parseVersion(temp, depends->version);
+
+    comparison = pkg_compare_versions(pkg, temp);
+
+    free(temp);
+
+    if((depends->constraint == EARLIER) && 
+       (comparison < 0))
+	return 1;
+    else if((depends->constraint == LATER) && 
+	    (comparison > 0))
+	return 1;
+    else if(comparison == 0)
+	return 1;
+    else if((depends->constraint == LATER_EQUAL) && 
+	    (comparison >= 0))
+	return 1;
+    else if((depends->constraint == EARLIER_EQUAL) && 
+	    (comparison <= 0))
+	return 1;
+    
+    return 0;
+}
+
+int pkg_dependence_satisfiable(opkg_conf_t *conf, depend_t *depend)
+{
+     abstract_pkg_t *apkg = depend->pkg;
+     abstract_pkg_vec_t *provider_apkgs = apkg->provided_by;
+     int n_providers = provider_apkgs->len;
+     abstract_pkg_t **apkgs = provider_apkgs->pkgs;
+     pkg_vec_t *pkg_vec;
+     int n_pkgs ; 
+     int i;
+     int j;
+
+     for (i = 0; i < n_providers; i++) {
+	  abstract_pkg_t *papkg = apkgs[i];
+	  pkg_vec = papkg->pkgs;
+	  if (pkg_vec) {
+	       n_pkgs = pkg_vec->len;
+	       for (j = 0; j < n_pkgs; j++) {
+		    pkg_t *pkg = pkg_vec->pkgs[j];
+		    if (version_constraints_satisfied(depend, pkg)) {
+			 return 1;
+		    }
+	       }
+	  }
+     }
+     return 0;
+}
+
+int pkg_dependence_satisfied(opkg_conf_t *conf, depend_t *depend)
+{
+     abstract_pkg_t *apkg = depend->pkg;
+     abstract_pkg_vec_t *provider_apkgs = apkg->provided_by;
+     int n_providers = provider_apkgs->len;
+     abstract_pkg_t **apkgs = provider_apkgs->pkgs;
+     int i;
+     int n_pkgs;
+     int j;
+
+     for (i = 0; i < n_providers; i++) {
+	  abstract_pkg_t *papkg = apkgs[i];
+	  pkg_vec_t *pkg_vec = papkg->pkgs;
+	  if (pkg_vec) {
+	       n_pkgs = pkg_vec->len;
+	       for (j = 0; j < n_pkgs; j++) {
+		    pkg_t *pkg = pkg_vec->pkgs[j];
+		    if (version_constraints_satisfied(depend, pkg)) {
+			 if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED)
+			      return 1;
+		    }
+	       }
+	  }
+     }
+     return 0;
+}
+
+static int is_pkg_in_pkg_vec(pkg_vec_t * vec, pkg_t * pkg)
+{
+    register int i;
+    pkg_t ** pkgs = vec->pkgs;
+
+    for(i = 0; i < vec->len; i++)
+	if((strcmp(pkg->name, (*(pkgs + i))->name) == 0)
+	   && (pkg_compare_versions(pkg, *(pkgs + i)) == 0)
+	   && (strcmp(pkg->architecture, (*(pkgs + i))->architecture) == 0))
+	    return 1;
+    return 0;
+}
+
+
+#ifdef DeadCode
+/**
+ * pkg_has_common_provides returns 1 if pkg and replacee both provide
+ * the same abstract package and 0 otherwise.
+ */
+int pkg_has_common_provides(pkg_t *pkg, pkg_t *replacee)
+{
+     abstract_pkg_t **provides = pkg->provides;
+     int provides_count = pkg->provides_count;
+     abstract_pkg_t **replacee_provides = replacee->provides;
+     int replacee_provides_count = replacee->provides_count;
+     int i, j;
+     for (i = 0; i < provides_count; i++) {
+	  abstract_pkg_t *apkg = provides[i];
+	  for (j = 0; j < replacee_provides_count; j++) {
+	       abstract_pkg_t *replacee_apkg = replacee_provides[i];
+	       if (apkg == replacee_apkg)
+		    return 1;
+	  }
+     }
+     return 0;
+}
+#endif
+
+/**
+ * pkg_provides_abstract returns 1 if pkg->provides contains providee
+ * and 0 otherwise.
+ */
+int pkg_provides_abstract(pkg_t *pkg, abstract_pkg_t *providee)
+{
+     abstract_pkg_t **provides = pkg->provides;
+     int provides_count = pkg->provides_count;
+     int i;
+     for (i = 0; i < provides_count; i++) {
+	  if (provides[i] == providee)
+	       return 1;
+     }
+     return 0;
+}
+
+/**
+ * pkg_replaces returns 1 if pkg->replaces contains one of replacee's provides and 0
+ * otherwise.
+ */
+int pkg_replaces(pkg_t *pkg, pkg_t *replacee)
+{
+     abstract_pkg_t **replaces = pkg->replaces;
+     int replaces_count = pkg->replaces_count;
+     /* abstract_pkg_t **replacee_provides = pkg->provides;
+     int replacee_provides_count = pkg->provides_count; */
+     int i, j;
+     for (i = 0; i < replaces_count; i++) {
+	  abstract_pkg_t *abstract_replacee = replaces[i];
+	  for (j = 0; j < replaces_count; j++) {
+   /*            opkg_message(NULL, OPKG_DEBUG2, "Searching pkg-name %s repprovname %s absrepname %s \n",
+                 pkg->name,replacee->provides[j]->name, abstract_replacee->name); */
+	       if (replacee->provides[j] == abstract_replacee)
+		    return 1;
+	  }
+     }
+     return 0;
+}
+
+
+/**
+ * pkg_conflicts_abstract returns 1 if pkg->conflicts contains conflictee and 0
+ * otherwise.
+ */
+int pkg_conflicts_abstract(pkg_t *pkg, abstract_pkg_t *conflictee)
+{
+     compound_depend_t *conflicts = pkg->conflicts;
+     int conflicts_count = pkg->conflicts_count;
+     int i, j;
+     for (i = 0; i < conflicts_count; i++) {
+	  int possibility_count = conflicts[i].possibility_count;
+	  struct depend **possibilities = conflicts[i].possibilities;
+	  for (j = 0; j < possibility_count; j++) {
+	       if (possibilities[j]->pkg == conflictee) {
+		    return 1;
+	       }
+	  }
+     }
+     return 0;
+}
+
+/**
+ * pkg_conflicts returns 1 if pkg->conflicts contains one of
+ * conflictee's provides and 0 otherwise.
+ */
+int pkg_conflicts(pkg_t *pkg, pkg_t *conflictee)
+{
+     compound_depend_t *conflicts = pkg->conflicts;
+     int conflicts_count = pkg->conflicts_count;
+     abstract_pkg_t **conflictee_provides = conflictee->provides;
+     int conflictee_provides_count = conflictee->provides_count;
+     int i, j, k;
+     int possibility_count;
+     struct depend **possibilities;
+     abstract_pkg_t *possibility ;
+
+     for (i = 0; i < conflicts_count; i++) {
+	  possibility_count = conflicts[i].possibility_count;
+	  possibilities = conflicts[i].possibilities;
+	  for (j = 0; j < possibility_count; j++) {
+	       possibility = possibilities[j]->pkg;
+	       for (k = 0; k < conflictee_provides_count; k++) {
+		    if (possibility == conflictee_provides[k]) {
+			 return 1;
+		    }
+	       }
+	  }
+     }
+     return 0;
+}
+
+static char ** merge_unresolved(char ** oldstuff, char ** newstuff)
+{
+    int oldlen = 0, newlen = 0;
+    char ** result;
+    register int i, j;
+
+    if(!newstuff)
+	return oldstuff;
+    
+    while(oldstuff && oldstuff[oldlen]) oldlen++;
+    while(newstuff && newstuff[newlen]) newlen++;
+    
+    result = (char **)realloc(oldstuff, sizeof(char *) * (oldlen + newlen + 1));
+    if (result == NULL) {
+        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+        return NULL;
+    }
+    
+    for(i = oldlen, j = 0; i < (oldlen + newlen); i++, j++)
+	*(result + i) = *(newstuff + j);
+    
+    *(result + i) = NULL;
+
+    return result;
+}
+    
+/* 
+ * a kinda kludgy way to back out depends str from two different arrays (reg'l'r 'n pre)
+ * this is null terminated, no count is carried around 
+ */
+char ** add_unresolved_dep(pkg_t * pkg, char ** the_lost, int ref_ndx)
+{
+    int count;
+    char ** resized;
+    char *depend_str = pkg_depend_str(pkg, ref_ndx);
+
+    count = 0;
+    while(the_lost && the_lost[count]) count++;
+
+    count++;  /* need one to hold the null */
+    resized = (char **)realloc(the_lost, sizeof(char *) * (count + 1));
+    if (resized == NULL) {
+       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+       return NULL;
+    }
+    resized[count - 1] = strdup(depend_str);
+    resized[count] = NULL;
+    
+    return resized;
+}
+	
+void printDepends(pkg_t * pkg)
+{
+    register int i, j;
+    compound_depend_t * depend;
+    int count;
+    
+    count = pkg->pre_depends_count + pkg->depends_count;
+    
+    depend = pkg->depends;
+    if(!depend){
+	fprintf(stderr, "Depends pointer is NULL\n");
+	return;
+    }
+    for(i = 0; i < count; i++){
+	fprintf(stderr, "%s has %d possibilities:\n", 
+		(depend->type == GREEDY_DEPEND) ? "Greedy-Depend" : ((depend->type == DEPEND) ? "Depend" : "Pre-Depend"),
+		depend->possibility_count);
+	for(j = 0; j < depend->possibility_count; j++)
+	    fprintf(stderr, "\t%s version %s (%d)\n",
+		    depend->possibilities[j]->pkg->name,
+		    depend->possibilities[j]->version,
+		    depend->possibilities[j]->constraint);
+	depend++;
+    }
+}
+
+int buildProvides(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
+{
+    register int i, j;
+
+    /* every pkg provides itself */
+    abstract_pkg_vec_insert(ab_pkg->provided_by, ab_pkg);
+
+    if (!pkg->provides_count)
+      return 0;
+
+    pkg->provides = (abstract_pkg_t **)malloc(sizeof(abstract_pkg_t *) * (pkg->provides_count + 1));
+    if (pkg->provides == NULL) {
+       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+       return -1 ;
+    }
+    pkg->provides[0] = ab_pkg;
+
+    // if (strcmp(ab_pkg->name, pkg->name))
+    //     fprintf(stderr, __FUNCTION__ ": ab_pkg=%s pkg=%s\n", ab_pkg->name, pkg->name);
+
+    for(i = 0; i < pkg->provides_count; i++){
+	 abstract_pkg_t *provided_abpkg = ensure_abstract_pkg_by_name(hash, pkg->provides_str[i]);
+
+	pkg->provides[i+1] = provided_abpkg;
+
+	j = 0;
+	abstract_pkg_vec_insert(provided_abpkg->provided_by, ab_pkg);
+    }
+    return 0;
+}
+
+/* Abhaya: added conflicts support */
+int buildConflicts(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
+{
+    register int i;
+    compound_depend_t * conflicts;
+
+    if (!pkg->conflicts_count)
+	return 0;
+
+    conflicts = pkg->conflicts = malloc(sizeof(compound_depend_t) *
+					pkg->conflicts_count);
+    if (conflicts == NULL) {
+       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+       return  -1;
+    }
+    for (i = 0; i < pkg->conflicts_count; i++) {
+	 conflicts->type = CONFLICTS;
+	 parseDepends(conflicts, hash,
+		      pkg->conflicts_str[i]);
+#if 0
+	 for (j = 0; j < conflicts->possibility_count; j++) {
+	      depend_t *possibility = conflicts->possibilities[j];
+	      abstract_pkg_t *conflicting_apkg = possibility->pkg;
+	      pkg_add_conflict_pair(ab_pkg, conflicting_apkg);
+	 }
+#endif
+	 conflicts++;
+    }
+    return 0;
+}
+
+int buildReplaces(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
+{
+     register int i, j;
+
+     if (!pkg->replaces_count)
+	  return 0;
+
+     pkg->replaces = (abstract_pkg_t **)malloc(sizeof(abstract_pkg_t *) * pkg->replaces_count);
+     if (pkg->replaces == NULL) {
+        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+        return  -1;
+     }
+
+     // if (strcmp(ab_pkg->name, pkg->name))
+     //     fprintf(stderr, __FUNCTION__ ": ab_pkg=%s pkg=%s\n", ab_pkg->name, pkg->name);
+
+     for(i = 0; i < pkg->replaces_count; i++){
+	  abstract_pkg_t *old_abpkg = ensure_abstract_pkg_by_name(hash, pkg->replaces_str[i]);
+
+	  pkg->replaces[i] = old_abpkg;
+
+	  j = 0;
+	  if (!old_abpkg->replaced_by)
+	       old_abpkg->replaced_by = abstract_pkg_vec_alloc();
+               if ( old_abpkg->replaced_by == NULL ){
+                  return -1;
+               }
+	  /* if a package pkg both replaces and conflicts old_abpkg,
+	   * then add it to the replaced_by vector so that old_abpkg
+	   * will be upgraded to ab_pkg automatically */
+	  if (pkg_conflicts_abstract(pkg, old_abpkg))
+	       abstract_pkg_vec_insert(old_abpkg->replaced_by, ab_pkg);
+     }
+     return 0;
+}
+
+int buildDepends(hash_table_t * hash, pkg_t * pkg)
+{
+     int count;
+     register int i;
+     compound_depend_t * depends;
+
+     if(!(count = pkg->pre_depends_count + pkg->depends_count + pkg->recommends_count + pkg->suggests_count))
+	  return 0;
+
+     if (0 && pkg->pre_depends_count)
+	  fprintf(stderr, "pkg=%s pre_depends_count=%d depends_count=%d\n", 
+		  pkg->name, pkg->pre_depends_count, pkg->depends_count);
+     depends = pkg->depends = malloc(sizeof(compound_depend_t) * count);
+     if (depends == NULL) {
+        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+        return  -1;
+     }
+     
+
+     for(i = 0; i < pkg->pre_depends_count; i++){
+	  parseDepends(depends, hash, pkg->pre_depends_str[i]);
+	  if (0 && pkg->pre_depends_count)
+	       fprintf(stderr, " pre_depends_str=%s depends=%p possibility_count=%x\n", 
+		       pkg->pre_depends_str[i], depends, depends->possibility_count);
+	  depends->type = PREDEPEND;
+	  depends++;
+     }
+
+     for(i = 0; i < pkg->recommends_count; i++){
+	  parseDepends(depends, hash, pkg->recommends_str[i]);
+	  if (0 && pkg->recommends_count)
+	       fprintf(stderr, " recommends_str=%s depends=%p possibility_count=%x\n", 
+		       pkg->recommends_str[i], depends, depends->possibility_count);
+	  depends->type = RECOMMEND;
+	  depends++;
+     }
+
+     for(i = 0; i < pkg->suggests_count; i++){
+	  parseDepends(depends, hash, pkg->suggests_str[i]);
+	  if (0 && pkg->suggests_count)
+	       fprintf(stderr, " suggests_str=%s depends=%p possibility_count=%x\n", 
+		       pkg->suggests_str[i], depends, depends->possibility_count);
+	  depends->type = SUGGEST;
+	  depends++;
+     }
+
+     for(i = 0; i < pkg->depends_count; i++){
+	  parseDepends(depends, hash, pkg->depends_str[i]);
+	  if (0 && pkg->depends_count)
+	       fprintf(stderr, " depends_str=%s depends=%p possibility_count=%x\n",
+		       pkg->depends_str[i], depends, depends->possibility_count);
+	  depends++;
+     }
+     return 0;
+}    
+
+/*
+ * pkg_depend_string: returns the depends string specified by index.
+ *   All 4 kinds of dependences: dependence, pre-dependence, recommend, and suggest are number starting from 0.
+ *   [0,npredepends) -> returns pre_depends_str[index]
+ *   [npredepends,npredepends+nrecommends) -> returns recommends_str[index]
+ *   [npredepends+nrecommends,npredepends+nrecommends+nsuggests) -> returns recommends_str[index]
+ *   [npredepends+nrecommends+nsuggests,npredepends+nrecommends+nsuggests+ndepends) -> returns depends_str[index]
+ */
+char *pkg_depend_str(pkg_t *pkg, int index)
+{
+     if (index < pkg->pre_depends_count) {
+	  return pkg->pre_depends_str[index];
+     }
+     index -= pkg->pre_depends_count;
+
+     if (index < pkg->recommends_count) {
+	  return pkg->recommends_str[index];
+     }
+     index -= pkg->recommends_count;
+
+     if (index < pkg->suggests_count) {
+	  return pkg->suggests_str[index];
+     }
+     index -= pkg->suggests_count;
+
+     if (index < pkg->depends_count) {
+	  return pkg->depends_str[index];
+     }
+     fprintf(stderr, "pkg_depend_str: index %d out of range for pkg=%s\n", index, pkg->name);
+     return NULL;
+}
+
+void freeDepends(pkg_t *pkg)
+{
+    int i;
+
+    if (pkg == NULL || pkg->depends == NULL) {
+	return;
+    }
+
+    fprintf(stderr, "Freeing depends=%p\n", pkg->depends);
+    for (i=0; i < pkg->depends->possibility_count; i++) {
+	depend_deinit(pkg->depends->possibilities[i]);
+    }
+    free(pkg->depends->possibilities);
+    free(pkg->depends);
+    pkg->depends = NULL;
+}
+
+void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg)
+{
+     compound_depend_t * depends;
+     int count, othercount;
+     register int i, j;
+     abstract_pkg_t * ab_depend;
+     abstract_pkg_t ** temp;
+
+     count = pkg->pre_depends_count + pkg->depends_count;
+     depends = pkg->depends;
+
+	  if (0 && pkg->pre_depends_count)
+	       fprintf(stderr, "pkg=%s pre_depends_count=%d depends_count=%d\n",
+		       pkg->name, pkg->pre_depends_count, pkg->depends_count);
+     for (i = 0; i < count; i++) {
+	  if (0 && pkg->pre_depends_count)
+	       fprintf(stderr, "  i=%d possibility_count=%x depends=%p\n", i, depends->possibility_count, depends);
+	  for (j = 0; j < depends->possibility_count; j++){
+	       ab_depend = depends->possibilities[j]->pkg;
+	       if(!ab_depend->depended_upon_by)
+		    ab_depend->depended_upon_by = (abstract_pkg_t **)calloc(1, sizeof(abstract_pkg_t *));
+
+	       temp = ab_depend->depended_upon_by;
+	       othercount = 1;
+	       while(*temp){
+		    temp++;
+		    othercount++;
+	       }
+	       *temp = ab_pkg;
+
+	       ab_depend->depended_upon_by = (abstract_pkg_t **)realloc(ab_depend->depended_upon_by, 
+									(othercount + 1) * sizeof(abstract_pkg_t *));
+	       /* the array may have moved */
+	       temp = ab_depend->depended_upon_by + othercount;
+	       *temp = NULL;
+	  }
+	  depends++;
+     }
+}
+
+static depend_t * depend_init(void)
+{
+    depend_t * d = (depend_t *)malloc(sizeof(depend_t));    
+    if ( d==NULL ){
+        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+        return NULL; 
+     }
+    d->constraint = NONE;
+    d->version = NULL;
+    d->pkg = NULL;
+    
+    return d;
+}
+
+static void depend_deinit(depend_t *d)
+{
+    free(d);
+}
+
+static int parseDepends(compound_depend_t *compound_depend, 
+			hash_table_t * hash, char * depend_str)
+{
+     char * pkg_name, buffer[2048];
+     int num_of_ors = 0;
+     register int i;
+     register char * src, * dest;
+     depend_t ** possibilities;
+
+     /* first count the number of ored possibilities for satisfying dependency */
+     src = depend_str;
+     while(*src)
+	  if(*src++ == '|')
+	       num_of_ors++;
+
+     compound_depend->type = DEPEND;
+
+     compound_depend->possibility_count = num_of_ors + 1;
+     possibilities = (depend_t **)malloc(sizeof(depend_t *) * (num_of_ors + 1));
+     if (!possibilities)
+	  return -ENOMEM;
+     compound_depend->possibilities = possibilities;
+
+     src = depend_str;
+     for(i = 0; i < num_of_ors + 1; i++){
+	  possibilities[i] = depend_init();
+          if (!possibilities[i])
+	       return -ENOMEM;
+	  /* gobble up just the name first */
+	  dest = buffer;
+	  while(*src &&
+		!isspace(*src) &&
+		(*src != '(') &&
+		(*src != '*') &&
+		(*src != '|'))
+	       *dest++ = *src++;
+	  *dest = '\0';
+	  pkg_name = trim_alloc(buffer);
+          if (pkg_name == NULL )
+	       return -ENOMEM;
+	
+	  /* now look at possible version info */
+	
+	  /* skip to next chars */
+	  if(isspace(*src))
+	       while(*src && isspace(*src)) src++;
+
+	  /* extract constraint and version */
+	  if(*src == '('){
+	       src++;
+	       if(!strncmp(src, "<<", 2)){
+		    possibilities[i]->constraint = EARLIER;
+		    src += 2;
+	       }
+	       else if(!strncmp(src, "<=", 2)){
+		    possibilities[i]->constraint = EARLIER_EQUAL;
+		    src += 2;
+	       }
+	       else if(!strncmp(src, ">=", 2)){
+		    possibilities[i]->constraint = LATER_EQUAL;
+		    src += 2;
+	       }
+	       else if(!strncmp(src, ">>", 2)){
+		    possibilities[i]->constraint = LATER;
+		    src += 2;
+	       }
+	       else if(!strncmp(src, "=", 1)){
+		    possibilities[i]->constraint = EQUAL;
+		    src++;
+	       }
+	       /* should these be here to support deprecated designations; dpkg does */
+	       else if(!strncmp(src, "<", 1)){
+		    possibilities[i]->constraint = EARLIER_EQUAL;
+		    src++;
+	       }
+	       else if(!strncmp(src, ">", 1)){
+		    possibilities[i]->constraint = LATER_EQUAL;
+		    src++; 
+	       }
+
+	       /* now we have any constraint, pass space to version string */
+	       while(isspace(*src)) src++;
+
+	       /* this would be the version string */
+	       dest = buffer;
+	       while(*src && *src != ')')
+		    *dest++ = *src++;
+	       *dest = '\0';
+	    
+	       possibilities[i]->version = trim_alloc(buffer);
+	       /*	   	    fprintf(stderr, "let's print the depends version string:");
+				    fprintf(stderr, "version %s\n", possibilities[i]->version);*/
+               if (possibilities[i]->version == NULL )
+	            return -ENOMEM;
+
+	 
+	  }
+	  /* hook up the dependency to its abstract pkg */
+	  possibilities[i]->pkg = ensure_abstract_pkg_by_name(hash, pkg_name);
+
+	  free(pkg_name);
+	
+	  /* now get past the ) and any possible | chars */
+	  while(*src &&
+		(isspace(*src) ||
+		 (*src == ')') ||
+		 (*src == '|')))
+	       src++;
+	  if (*src == '*')
+	  {
+	       compound_depend->type = GREEDY_DEPEND;
+	       src++;
+	  }
+     }
+
+     return 0;
+}
diff --git a/libopkg/pkg_depends.h b/libopkg/pkg_depends.h
new file mode 100644
index 0000000..b0066ce
--- /dev/null
+++ b/libopkg/pkg_depends.h
@@ -0,0 +1,105 @@
+/* pkg_depends.h - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_DEPENDS_H
+#define PKG_DEPENDS_H
+
+#include "pkg.h"
+#include "pkg_hash.h"
+
+enum depend_type {
+    PREDEPEND,
+    DEPEND,
+    CONFLICTS,
+    GREEDY_DEPEND,
+    RECOMMEND,
+    SUGGEST
+};
+typedef enum depend_type depend_type_t;
+
+enum version_constraint {
+    NONE,
+    EARLIER,
+    EARLIER_EQUAL,
+    EQUAL,
+    LATER_EQUAL,
+    LATER
+};
+typedef enum version_constraint version_constraint_t;
+
+struct depend{
+    version_constraint_t constraint;
+    char * version;
+    abstract_pkg_t * pkg;
+};
+typedef struct depend depend_t;
+    
+struct compound_depend{
+    depend_type_t type;
+    int possibility_count;
+    struct depend ** possibilities;
+};
+typedef struct compound_depend compound_depend_t;
+
+#include "hash_table.h"
+
+int buildProvides(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg);
+int buildConflicts(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg);
+int buildReplaces(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg);
+int buildDepends(hash_table_t * hash, pkg_t * pkg);
+
+/**
+ * pkg_has_common_provides returns 1 if pkg and replacee both provide
+ * the same abstract package and 0 otherwise.
+ */
+int pkg_has_common_provides(pkg_t *pkg, pkg_t *replacee);
+
+/**
+ * pkg_provides returns 1 if pkg->provides contains providee and 0
+ * otherwise.
+ */
+int pkg_provides_abstract(pkg_t *pkg, abstract_pkg_t *providee);
+
+/**
+ * pkg_replaces returns 1 if pkg->replaces contains one of replacee's provides and 0
+ * otherwise.
+ */
+int pkg_replaces(pkg_t *pkg, pkg_t *replacee);
+
+/**
+ * pkg_conflicts_abstract returns 1 if pkg->conflicts contains conflictee provides and 0
+ * otherwise.
+ */
+int pkg_conflicts_abstract(pkg_t *pkg, abstract_pkg_t *conflicts);
+
+/**
+ * pkg_conflicts returns 1 if pkg->conflicts contains one of conflictee's provides and 0
+ * otherwise.
+ */
+int pkg_conflicts(pkg_t *pkg, pkg_t *conflicts);
+
+char *pkg_depend_str(pkg_t *pkg, int index);
+void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg);
+void freeDepends(pkg_t *pkg);
+void printDepends(pkg_t * pkg);
+int version_constraints_satisfied(depend_t * depends, pkg_t * pkg);
+int pkg_hash_fetch_unsatisfied_dependencies(opkg_conf_t *conf, pkg_t * pkg, pkg_vec_t *depends, char *** unresolved);
+pkg_vec_t * pkg_hash_fetch_conflicts(hash_table_t * hash, pkg_t * pkg);
+int pkg_dependence_satisfiable(opkg_conf_t *conf, depend_t *depend);
+int pkg_dependence_satisfied(opkg_conf_t *conf, depend_t *depend);
+
+#endif
diff --git a/libopkg/pkg_dest.c b/libopkg/pkg_dest.c
new file mode 100644
index 0000000..f015dd6
--- /dev/null
+++ b/libopkg/pkg_dest.c
@@ -0,0 +1,92 @@
+/* pkg_dest.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "pkg_dest.h"
+#include "file_util.h"
+#include "str_util.h"
+#include "sprintf_alloc.h"
+
+int pkg_dest_init(pkg_dest_t *dest, const char *name, const char *root_dir,const char * lists_dir)
+{
+    dest->name = strdup(name);
+
+    /* Guarantee that dest->root_dir ends with a '/' */
+    if (str_ends_with(root_dir, "/")) {
+	dest->root_dir = strdup(root_dir);
+    } else {
+	sprintf_alloc(&dest->root_dir, "%s/", root_dir);
+    }
+    file_mkdir_hier(dest->root_dir, 0755);
+
+    sprintf_alloc(&dest->opkg_dir, "%s%s",
+		  dest->root_dir, OPKG_STATE_DIR_PREFIX);
+    file_mkdir_hier(dest->opkg_dir, 0755);
+
+    if (str_starts_with (lists_dir, "/")) 
+        sprintf_alloc(&dest->lists_dir, "%s", lists_dir);
+    else
+        sprintf_alloc(&dest->lists_dir, "/%s", lists_dir);
+
+    file_mkdir_hier(dest->lists_dir, 0755);
+
+    sprintf_alloc(&dest->info_dir, "%s/%s",
+		  dest->opkg_dir, OPKG_INFO_DIR_SUFFIX);
+    file_mkdir_hier(dest->info_dir, 0755);
+
+    sprintf_alloc(&dest->status_file_name, "%s/%s",
+		  dest->opkg_dir, OPKG_STATUS_FILE_SUFFIX);
+
+    sprintf_alloc(&dest->status_file_tmp_name, "%s/%s.tmp",
+		  dest->opkg_dir, OPKG_STATUS_FILE_SUFFIX);
+
+    dest->status_file = NULL;
+
+    return 0;
+}
+
+void pkg_dest_deinit(pkg_dest_t *dest)
+{
+    free(dest->name);
+    dest->name = NULL;
+
+    free(dest->root_dir);
+    dest->root_dir = NULL;
+
+    free(dest->opkg_dir);
+    dest->opkg_dir = NULL;
+
+    free(dest->lists_dir);
+    dest->lists_dir = NULL;
+
+    free(dest->info_dir);
+    dest->info_dir = NULL;
+
+    free(dest->status_file_name);
+    dest->status_file_name = NULL;
+
+    free(dest->status_file_tmp_name);
+    dest->status_file_tmp_name = NULL;
+
+    if (dest->status_file) {
+	fclose(dest->status_file);
+    }
+    dest->status_file = NULL;
+
+    dest->root_dir = NULL;
+}
diff --git a/libopkg/pkg_dest.h b/libopkg/pkg_dest.h
new file mode 100644
index 0000000..33c72da
--- /dev/null
+++ b/libopkg/pkg_dest.h
@@ -0,0 +1,38 @@
+/* pkg_dest.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_DEST_H
+#define PKG_DEST_H
+
+typedef struct pkg_dest pkg_dest_t;
+struct pkg_dest
+{
+    char *name;
+    char *root_dir;
+    char *opkg_dir;
+    char *lists_dir;
+    char *info_dir;
+    char *status_file_name;
+    char *status_file_tmp_name;
+    FILE *status_file;
+};
+
+int pkg_dest_init(pkg_dest_t *dest, const char *name, const char *root_dir,const char *lists_dir);
+void pkg_dest_deinit(pkg_dest_t *dest);
+
+#endif
+
diff --git a/libopkg/pkg_dest_list.c b/libopkg/pkg_dest_list.c
new file mode 100644
index 0000000..023e58e
--- /dev/null
+++ b/libopkg/pkg_dest_list.c
@@ -0,0 +1,85 @@
+/* pkg_dest_list.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "pkg_dest.h"
+#include "void_list.h"
+#include "pkg_dest_list.h"
+
+int pkg_dest_list_elt_init(pkg_dest_list_elt_t *elt, pkg_dest_t *data)
+{
+    return void_list_elt_init((void_list_elt_t *) elt, data);
+}
+
+void pkg_dest_list_elt_deinit(pkg_dest_list_elt_t *elt)
+{
+    void_list_elt_deinit((void_list_elt_t *) elt);
+}
+
+int pkg_dest_list_init(pkg_dest_list_t *list)
+{
+    return void_list_init((void_list_t *) list);
+}
+
+void pkg_dest_list_deinit(pkg_dest_list_t *list)
+{
+    pkg_dest_list_elt_t *iter;
+    pkg_dest_t *pkg_dest;
+
+    for (iter = list->head; iter; iter = iter->next) {
+	pkg_dest = iter->data;
+	pkg_dest_deinit(pkg_dest);
+
+	/* malloced in pkg_dest_list_append */
+	free(pkg_dest);
+	iter->data = NULL;
+    }
+    void_list_deinit((void_list_t *) list);
+}
+
+pkg_dest_t *pkg_dest_list_append(pkg_dest_list_t *list, const char *name,
+				 const char *root_dir,const char *lists_dir)
+{
+    int err;
+    pkg_dest_t *pkg_dest;
+
+    /* freed in plg_dest_list_deinit */
+    pkg_dest = malloc(sizeof(pkg_dest_t));
+    if (pkg_dest == NULL) {
+	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	return NULL;
+    }
+
+    pkg_dest_init(pkg_dest, name, root_dir,lists_dir);
+    err = void_list_append((void_list_t *) list, pkg_dest);
+    if (err) {
+	return NULL;
+    }
+
+    return pkg_dest;
+}
+
+int pkg_dest_list_push(pkg_dest_list_t *list, pkg_dest_t *data)
+{
+    return void_list_push((void_list_t *) list, data);
+}
+
+pkg_dest_list_elt_t *pkg_dest_list_pop(pkg_dest_list_t *list)
+{
+    return (pkg_dest_list_elt_t *) void_list_pop((void_list_t *) list);
+}
diff --git a/libopkg/pkg_dest_list.h b/libopkg/pkg_dest_list.h
new file mode 100644
index 0000000..a3c1c65
--- /dev/null
+++ b/libopkg/pkg_dest_list.h
@@ -0,0 +1,50 @@
+/* pkg_dest_list.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_DEST_LIST_H
+#define PKG_DEST_LIST_H
+
+#include "pkg_dest.h"
+
+typedef struct pkg_dest_list_elt pkg_dest_list_elt_t;
+struct pkg_dest_list_elt
+{
+    pkg_dest_list_elt_t *next;
+    pkg_dest_t *data;
+};
+
+typedef struct pkg_dest_list pkg_dest_list_t;
+struct pkg_dest_list
+{
+    pkg_dest_list_elt_t pre_head;
+    pkg_dest_list_elt_t *head;
+    pkg_dest_list_elt_t *tail;
+};
+
+int pkg_dest_list_elt_init(pkg_dest_list_elt_t *elt, pkg_dest_t *data);
+void pkg_dest_list_elt_deinit(pkg_dest_list_elt_t *elt);
+
+int pkg_dest_list_init(pkg_dest_list_t *list);
+void pkg_dest_list_deinit(pkg_dest_list_t *list);
+
+pkg_dest_t *pkg_dest_list_append(pkg_dest_list_t *list, const char *name,
+				 const char *root_dir,const char* lists_dir);
+int pkg_dest_list_push(pkg_dest_list_t *list, pkg_dest_t *data);
+pkg_dest_list_elt_t *pkg_dest_list_pop(pkg_dest_list_t *list);
+
+#endif
+
diff --git a/libopkg/pkg_extract.c b/libopkg/pkg_extract.c
new file mode 100644
index 0000000..78c252b
--- /dev/null
+++ b/libopkg/pkg_extract.c
@@ -0,0 +1,168 @@
+/* pkg_extract.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+
+#include "pkg_extract.h"
+
+#include "libbb/libbb.h"
+#include "file_util.h"
+#include "sprintf_alloc.h"
+
+/* assuage libb functions */
+const char *applet_name = "opkg";
+
+int pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream)
+{
+    char *buffer = deb_extract(pkg->local_filename, stderr,
+			       extract_control_tar_gz
+			       | extract_one_to_buffer,
+			       NULL, "./control");
+    if (buffer == NULL) {
+	return EINVAL;
+    }
+
+    /* XXX: QUESTION: Is there a way to do this directly with deb_extract now? */
+    fputs(buffer, stream);
+    free(buffer);
+
+    return 0;
+}
+
+int pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir)
+{
+    return pkg_extract_control_files_to_dir_with_prefix(pkg, dir, "");
+}
+
+int pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg,
+						 const char *dir,
+						 const char *prefix)
+{
+    char *dir_with_prefix;
+
+    sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
+
+    deb_extract(pkg->local_filename, stderr,
+		extract_control_tar_gz
+                | extract_all_to_fs| extract_preserve_date
+		| extract_unconditional,
+		dir_with_prefix, NULL);
+
+    free(dir_with_prefix);
+
+    /* XXX: BUG: how do we know if deb_extract worked or not? This is
+       a defect in the current deb_extract from what I can tell.
+
+       Once this is fixed, audit all calls to deb_extract. */
+    return 0;
+}
+
+int pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
+{
+    deb_extract(pkg->local_filename, stderr,
+		extract_data_tar_gz
+                | extract_all_to_fs| extract_preserve_date
+		| extract_unconditional,
+		dir, NULL);
+
+    /* BUG: How do we know if deb_extract worked or not? This is a
+       defect in the current deb_extract from what I can tell. */
+    return 0;
+}
+
+int pkg_extract_data_file_names_to_file(pkg_t *pkg, const char *file_name)
+{
+     int err=0;
+     char *line, *data_file;
+     FILE *file;
+     FILE *tmp;
+
+     file = fopen(file_name, "w");
+     if (file == NULL) {
+	  fprintf(stderr, "%s: ERROR: Failed to open %s for writing.\n",
+		  __FUNCTION__, file_name);
+	  return EINVAL;
+     }
+
+     tmp = tmpfile();
+     if (pkg->installed_files) {
+	  str_list_elt_t *elt;
+	  for (elt = pkg->installed_files->head; elt; elt = elt->next) {
+	       fprintf(file, "%s\n", elt->data);
+	  }
+     } else {
+	  err = pkg_extract_data_file_names_to_stream(pkg, tmp);
+	  if (err) {
+	       fclose(file);
+	       fclose(tmp);
+	       return err;
+	  }
+
+	  /* Fixup data file names by removing the initial '.' */
+	  rewind(tmp);
+	  while (1) {
+	       line = file_read_line_alloc(tmp);
+	       if (line == NULL) {
+		    break;
+	       }
+
+	       data_file = line;
+	       if (*data_file == '.') {
+		    data_file++;
+	       }
+
+	       if (*data_file != '/') {
+		    fputs("/", file);
+	       }
+
+	       /* I have no idea why, but this is what dpkg does */
+	       if (strcmp(data_file, "/\n") == 0) {
+		    fputs("/.\n", file);
+	       } else {
+		    fputs(data_file, file);
+	       }
+	  }
+     }
+     fclose(tmp);
+     fclose(file);
+
+     return err;
+}
+
+int pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *file)
+{
+    /* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
+       data file names with a '.' as the first character. I've taught
+       opkg how to cope with the presence or absence of the '.', but
+       this may trip up dpkg.
+
+       For all I know, this could actually be a bug in opkg-build. So,
+       I'll have to try installing some .debs and comparing the *.list
+       files.
+
+       If we wanted to, we could workaround the deb_extract behavior
+       right here, by writing to a tmpfile, then munging things as we
+       wrote to the actual stream. */
+     deb_extract(pkg->local_filename, file,
+		 extract_quiet | extract_data_tar_gz | extract_list,
+		 NULL, NULL);
+
+    /* BUG: How do we know if deb_extract worked or not? This is a
+       defect in the current deb_extract from what I can tell. */
+    return 0;
+}
diff --git a/libopkg/pkg_extract.h b/libopkg/pkg_extract.h
new file mode 100644
index 0000000..4c491e8
--- /dev/null
+++ b/libopkg/pkg_extract.h
@@ -0,0 +1,32 @@
+/* pkg_extract.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_EXTRACT_H
+#define PKG_EXTRACT_H
+
+#include "pkg.h"
+
+int pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream);
+int pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir);
+int pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg,
+						 const char *dir,
+						 const char *prefix);
+int pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir);
+int pkg_extract_data_file_names_to_file(pkg_t *pkg, const char *file_name);
+int pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *file);
+
+#endif
diff --git a/libopkg/pkg_hash.c b/libopkg/pkg_hash.c
new file mode 100644
index 0000000..0106e65
--- /dev/null
+++ b/libopkg/pkg_hash.c
@@ -0,0 +1,617 @@
+/* opkg_hash.c - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "hash_table.h"
+#include "pkg.h"
+#include "opkg_message.h"
+#include "pkg_vec.h"
+#include "pkg_hash.h"
+#include "pkg_parse.h"
+#include "opkg_utils.h"
+
+static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name);
+
+/*
+ * this will talk to both feeds-lists files and installed status files
+ * example api:
+ *
+ * hash_table_t hash;
+ * pkg_hash_init(name, &hash, 1000);
+ * pkg_hash_add_from_file(<feed filename>);
+ *
+ * the query function is just there as a shell to prove to me that this
+ * sort of works, but isn't far from doing something useful
+ * 
+ * -sma, 12/21/01
+ * modified: CDW 3 Jan. 2002
+ */
+
+
+
+int pkg_hash_init(const char *name, hash_table_t *hash, int len)
+{
+  return hash_table_init(name, hash, len);
+}
+
+void pkg_hash_deinit(hash_table_t *hash)
+{
+  hash_table_deinit(hash);
+}
+
+
+/* Find the default arch for a given package status file if none is given. */
+static char *pkg_get_default_arch(opkg_conf_t *conf)
+{
+     nv_pair_list_elt_t *l;
+     char *def_arch = HOST_CPU_STR;		/* Default arch */
+     int def_prio = 0;				/* Other archs override this */
+
+     l = conf->arch_list.head;
+
+     while (l) {
+	  nv_pair_t *nv = l->data;
+	  int priority = strtol(nv->value, NULL, 0);
+
+	  /* Check if this arch has higher priority, and is valid */
+	  if ((priority > def_prio) &&
+	      (strcmp(nv->name, "all")) && (strcmp(nv->name, "noarch"))) {
+	       /* Our new default */
+	       def_prio = priority;
+	       def_arch = nv->name;
+	  }
+	  l = l->next;
+     }
+
+     return strdup(def_arch);
+}
+
+int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
+			   pkg_src_t *src, pkg_dest_t *dest, int is_status_file)
+{
+     hash_table_t *hash = &conf->pkg_hash;
+     char **raw;
+     char **raw_start;
+     pkg_t *pkg;
+    
+     raw = raw_start = read_raw_pkgs_from_file(file_name);
+     if (!raw)
+        return -ENOMEM;
+
+     while(*raw){         /* don't worry, we'll increment raw in the parsing function */
+	  pkg = pkg_new();
+	  if (!pkg)
+	       return -ENOMEM;
+
+	  if (pkg_parse_raw(pkg, &raw, src, dest) == 0) {
+	       if (!pkg->architecture) {
+		    char *version_str = pkg_version_str_alloc(pkg);
+		    pkg->architecture = pkg_get_default_arch(conf);
+		    opkg_message(conf, OPKG_ERROR, "Package %s version %s has no architecture specified, defaulting to %s.\n",
+				 pkg->name, version_str, pkg->architecture);
+		    free(version_str);
+	       }
+	       hash_insert_pkg(hash, pkg, is_status_file,conf);
+	  } else {
+	       free(pkg);
+	  }
+     }
+
+     /* XXX: CLEANUP: I'd like a cleaner interface for cleaning up
+	memory after read_raw_pkgs_from_file */
+     raw = raw_start;
+     while (*raw) {
+	  free(*raw++);
+     }
+     free(raw_start);
+     return 0;
+}
+
+abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name)
+{
+  return (abstract_pkg_t *)hash_table_get(hash, pkg_name);
+}
+
+abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name)
+{
+    abstract_pkg_t *apkg = abstract_pkg_fetch_by_name(hash, name);
+    if (apkg)
+       return NULL;
+    return apkg->provided_by;
+}
+
+
+pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg, 
+						  int (*constraint_fcn)(pkg_t *pkg, void *cdata), void *cdata, int quiet)
+{
+     int i; 
+     int nprovides = 0;
+     int nmatching = 0;
+     pkg_vec_t *matching_pkgs = pkg_vec_alloc();
+     abstract_pkg_vec_t *matching_apkgs = abstract_pkg_vec_alloc();
+     abstract_pkg_vec_t *provided_apkg_vec;
+     abstract_pkg_t **provided_apkgs;
+     abstract_pkg_vec_t *providers = abstract_pkg_vec_alloc();
+     pkg_t *latest_installed_parent = NULL;
+     pkg_t *latest_matching = NULL;
+     pkg_t *held_pkg = NULL;
+     pkg_t *good_pkg_by_name = NULL;
+
+     if (matching_apkgs == NULL || providers == NULL || 
+         apkg == NULL || apkg->provided_by == NULL || (apkg->provided_by->len == 0))
+	  return NULL;
+
+     opkg_message(conf, OPKG_DEBUG, "best installation candidate for %s\n", apkg->name);
+
+     provided_apkg_vec = apkg->provided_by;
+     nprovides = provided_apkg_vec->len;
+     provided_apkgs = provided_apkg_vec->pkgs;
+     if (nprovides > 1)
+	  opkg_message(conf, OPKG_DEBUG, " apkg=%s nprovides=%d\n", apkg->name, nprovides);
+
+     /* accumulate all the providers */
+     for (i = 0; i < nprovides; i++) {
+	  abstract_pkg_t *provider_apkg = provided_apkgs[i];
+	  opkg_message(conf, OPKG_DEBUG, " adding %s to providers\n", provider_apkg->name);
+	  abstract_pkg_vec_insert(providers, provider_apkg);
+     }
+     nprovides = providers->len;
+
+     for (i = 0; i < nprovides; i++) {
+	  abstract_pkg_t *provider_apkg = abstract_pkg_vec_get(providers, i);
+	  abstract_pkg_t *replacement_apkg = NULL;
+	  pkg_vec_t *vec;
+
+	  if (provider_apkg->replaced_by && provider_apkg->replaced_by->len) {
+	       replacement_apkg = provider_apkg->replaced_by->pkgs[0];
+	       if (provider_apkg->replaced_by->len > 1) {
+		    opkg_message(conf, OPKG_NOTICE, "Multiple replacers for %s, using first one (%s)\n", 
+				 provider_apkg->name, replacement_apkg->name);
+	       }
+	  }
+
+	  if (replacement_apkg)
+	       opkg_message(conf, OPKG_DEBUG, "   replacement_apkg=%s for provider_apkg=%s\n", 
+			    replacement_apkg->name, provider_apkg->name);
+
+	  if (replacement_apkg && (replacement_apkg != provider_apkg)) {
+	       if (abstract_pkg_vec_contains(providers, replacement_apkg))
+		    continue;
+	       else
+		    provider_apkg = replacement_apkg;
+	  }
+
+	  if (!(vec = provider_apkg->pkgs)) {
+	       opkg_message(conf, OPKG_DEBUG, "   no pkgs for provider_apkg %s\n", provider_apkg->name);
+	       continue;
+	  }
+    
+
+	  /* now check for supported architecture */
+	  {
+	       int max_count = 0;
+	       int i;
+
+	       /* count packages matching max arch priority and keep track of last one */
+	       for (i = 0; i < vec->len; i++) {
+		    pkg_t *maybe = vec->pkgs[i];
+		    opkg_message(conf, OPKG_DEBUG, "  %s arch=%s arch_priority=%d version=%s  \n",
+				 maybe->name, maybe->architecture, maybe->arch_priority, maybe->version);
+		    if (maybe->arch_priority > 0)  {
+			 max_count++;
+			 abstract_pkg_vec_insert(matching_apkgs, maybe->parent);
+			 pkg_vec_insert(matching_pkgs, maybe);
+		    }
+	       }
+	  }
+     }
+
+     if (matching_pkgs->len > 1)
+	  pkg_vec_sort(matching_pkgs, pkg_name_version_and_architecture_compare);
+     if (matching_apkgs->len > 1)
+	  abstract_pkg_vec_sort(matching_pkgs, abstract_pkg_name_compare);
+
+/* Here it is usefull, if ( matching_apkgs->len > 1 ), to test if one of this matching packages has the same name of the
+   needed package. In this case, I would return it for install, otherwise I will continue with the procedure */
+/* The problem is what to do when there are more than a mathing package, with the same name and several version ?
+   Until now I always got the latest, but that breaks the downgrade option.
+   If I stop at the first one, I would probably miss the new ones 
+   Maybe the way is to have some kind of flag somewhere, to see if the package been asked to install is from a file,
+   or from a Packages feed.
+   It it is from a file it always need to be checked whatever version I have in feeds or everywhere, according to force-down or whatever options*/
+/*Pigi*/
+
+     for (i = 0; i < matching_pkgs->len; i++) {
+	  pkg_t *matching = matching_pkgs->pkgs[i];
+          if (constraint_fcn(matching, cdata)) {  /* We found it */
+             opkg_message(conf, OPKG_DEBUG, " Found a valid candidate for the install: %s %s  \n", matching->name, matching->version) ;
+             good_pkg_by_name = matching;
+             if ( matching->provided_by_hand == 1 )    /* It has been provided by hand, so it is what user want */
+                break;                                 
+          }
+     }
+
+
+     for (i = 0; i < matching_pkgs->len; i++) {
+	  pkg_t *matching = matching_pkgs->pkgs[i];
+	  latest_matching = matching;
+	  if (matching->parent->state_status == SS_INSTALLED || matching->parent->state_status == SS_UNPACKED)
+	       latest_installed_parent = matching;
+	  if (matching->state_flag & (SF_HOLD|SF_PREFER)) {
+	       if (held_pkg)
+		    opkg_message(conf, OPKG_ERROR, "Multiple packages (%s and %s) providing same name marked HOLD or PREFER.  Using latest.\n",
+				 held_pkg->name, matching->name);
+	       held_pkg = matching;
+	  }
+     }
+
+     if (!good_pkg_by_name && !held_pkg && !latest_installed_parent && matching_apkgs->len > 1 && !quiet) {
+	  opkg_message(conf, OPKG_ERROR, "Package=%s, %d matching providers\n",
+		       apkg->name, matching_apkgs->len);
+	  for (i = 0; i < matching_apkgs->len; i++) {
+              abstract_pkg_t *matching = matching_apkgs->pkgs[i];
+              opkg_message(conf, OPKG_ERROR, "    %s\n", matching->name);
+	  }
+	  opkg_message(conf, OPKG_ERROR, "Please select one with opkg install or opkg flag prefer\n");
+     }
+
+     if (matching_apkgs->len > 1 && conf->verbosity > 1) {
+	  opkg_message(conf, OPKG_NOTICE, "%s: for apkg=%s, %d matching pkgs\n",
+		       __FUNCTION__, apkg->name, matching_pkgs->len);
+	  for (i = 0; i < matching_pkgs->len; i++) {
+	       pkg_t *matching = matching_pkgs->pkgs[i];
+	       opkg_message(conf, OPKG_INFO, "    %s %s %s\n",
+			    matching->name, matching->version, matching->architecture);
+	  }
+     }
+
+     nmatching = matching_apkgs->len;
+
+     pkg_vec_free(matching_pkgs);
+     abstract_pkg_vec_free(matching_apkgs);
+     abstract_pkg_vec_free(providers);
+
+     if (good_pkg_by_name) {   /* We found a good candidate, we will install it */ 
+	  return good_pkg_by_name;
+     }
+     if (held_pkg) {
+	  opkg_message(conf, OPKG_INFO, "  using held package %s\n", held_pkg->name);
+	  return held_pkg;
+     }
+     if (latest_installed_parent) {
+	  opkg_message(conf, OPKG_INFO, "  using latest version of installed package %s\n", latest_installed_parent->name);
+	  return latest_installed_parent;
+     }
+     if (nmatching > 1) {
+	  opkg_message(conf, OPKG_INFO, "  no matching pkg out of matching_apkgs=%d\n", nmatching);
+	  return NULL;
+     }
+     if (latest_matching) {
+	  opkg_message(conf, OPKG_INFO, "  using latest matching %s %s %s\n",
+		       latest_matching->name, latest_matching->version, latest_matching->architecture);
+	  return latest_matching;
+     }
+     return NULL;
+}
+
+static int pkg_name_constraint_fcn(pkg_t *pkg, void *cdata)
+{
+     const char *name = (const char *)cdata;
+     if (strcmp(pkg->name, name) == 0)
+	  return 1;
+     else
+	  return 0;   
+}
+
+pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name)
+{
+     hash_table_t *hash = &conf->pkg_hash;
+     abstract_pkg_t *apkg = NULL;
+
+     if (!(apkg = abstract_pkg_fetch_by_name(hash, name)))
+	  return NULL;
+     
+     return pkg_hash_fetch_best_installation_candidate(conf, apkg, pkg_name_constraint_fcn, apkg->name, 0);
+}
+
+
+pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash, 
+				       const char *pkg_name,
+				       const char * version)
+{
+    pkg_vec_t * vec;
+    register int i;
+    char *version_str = NULL;
+    
+    if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name)))
+	return NULL;
+    
+    for(i = 0; i < vec->len; i++) {
+	version_str = pkg_version_str_alloc(vec->pkgs[i]);
+	if(!strcmp(version_str, version)) {
+	    free(version_str);
+	    break;
+	}
+	free(version_str);
+    }
+	
+    if(i == vec->len)
+	return NULL;
+    
+    return vec->pkgs[i];
+}
+
+pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
+					     const char *pkg_name,
+					     pkg_dest_t *dest)
+{
+    pkg_vec_t * vec;
+    register int i;
+
+    if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))) {
+	return NULL;
+    }
+    
+    for(i = 0; i < vec->len; i++)
+	if((vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED) && vec->pkgs[i]->dest == dest) {
+	    return vec->pkgs[i];
+        }
+    return NULL;
+}
+
+pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
+					const char *pkg_name)
+{
+    pkg_vec_t * vec;
+    register int i;
+
+    if(!(vec = pkg_vec_fetch_by_name(hash, pkg_name))){
+	return NULL;
+    } 
+
+    for(i = 0; i < vec->len; i++)
+	if (vec->pkgs[i]->state_status == SS_INSTALLED || vec->pkgs[i]->state_status == SS_UNPACKED){
+	    return vec->pkgs[i];
+        } 
+    
+    return NULL;
+}
+
+pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name)
+{
+    abstract_pkg_t * ab_pkg;
+
+    if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name))){
+       return NULL;
+    }
+    
+    if (ab_pkg->pkgs) {
+      return ab_pkg->pkgs;
+    } else if (ab_pkg->provided_by) {
+      abstract_pkg_t *abpkg =  abstract_pkg_vec_get(ab_pkg->provided_by, 0);
+      if (abpkg != NULL){
+	  return abpkg->pkgs;
+      } else {
+	  return ab_pkg->pkgs;
+      }
+    } else {
+      return NULL;
+    }
+}
+
+static int pkg_compare_names(const void *p1, const void *p2)
+{
+  const pkg_t *pkg1 = *(const pkg_t **)p1;
+  const pkg_t *pkg2 = *(const pkg_t **)p2;
+  if (pkg1->name == NULL)
+    return 1;
+  if (pkg2->name == NULL)
+    return -1;
+  return(strcmp(pkg1->name, pkg2->name));
+}
+
+
+static void pkg_hash_fetch_available_helper(const char *pkg_name, void *entry, void *data)
+{
+  int j;
+  abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
+  pkg_vec_t *all = (pkg_vec_t *)data;
+  pkg_vec_t *pkg_vec = ab_pkg->pkgs;
+  if (pkg_vec) {
+    for (j = 0; j < pkg_vec->len; j++) {
+      pkg_t *pkg = pkg_vec->pkgs[j];
+      pkg_vec_insert(all, pkg);
+    }
+  }
+}
+
+void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *all)
+{
+    hash_table_foreach(hash, pkg_hash_fetch_available_helper, all);
+    qsort(all->pkgs, all->len, sizeof(pkg_t *), pkg_compare_names);
+}
+
+static void pkg_hash_fetch_all_installed_helper(const char *pkg_name, void *entry, void *data)
+{
+  abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
+  pkg_vec_t *all = (pkg_vec_t *)data;
+  pkg_vec_t *pkg_vec = ab_pkg->pkgs;
+  int j;
+  if (pkg_vec) {
+    for (j = 0; j < pkg_vec->len; j++) {
+      pkg_t *pkg = pkg_vec->pkgs[j];
+      if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) {
+	pkg_vec_insert(all, pkg);
+      }
+    }
+  }
+}
+void pkg_hash_fetch_all_installed(hash_table_t *hash, pkg_vec_t *all)
+{
+    hash_table_foreach(hash, pkg_hash_fetch_all_installed_helper, all);
+    qsort(all->pkgs, all->len, sizeof(void*), pkg_compare_names);
+}
+
+static void pkg_hash_dump_helper(const char *pkg_name, void *entry, void *data)
+{
+  int i;
+  pkg_t *pkg;
+  abstract_pkg_t *ab_pkg = (abstract_pkg_t *)entry;
+  opkg_conf_t *conf = (opkg_conf_t *)data;
+  abstract_pkg_t ** dependents = ab_pkg->depended_upon_by;
+  fprintf(stdout, "%s\n", ab_pkg->name);
+  i = 0;
+  if (dependents != NULL)
+    while (dependents [i] != NULL)
+      printf ("\tdepended upon by - %s\n", dependents [i ++]->name);
+  dependents = ab_pkg->provided_by->pkgs;
+  i = 0;
+  if (dependents != NULL)
+    while (dependents [i] != NULL && i < ab_pkg->provided_by->len)
+      printf ("\tprovided by - %s\n", dependents [i ++]->name);
+  pkg = pkg_hash_fetch_best_installation_candidate_by_name (conf, ab_pkg->name);
+  if (pkg) {
+    i = 0;
+    while (i < pkg->depends_count)
+      printf ("\tdepends on - %s\n", pkg->depends_str [i ++]);	
+  }
+}
+void pkg_hash_dump(hash_table_t *hash, void *data)
+{
+
+  printf ("\n\n+=+%s+=+\n\n", __FUNCTION__);
+  hash_table_foreach(hash, pkg_hash_dump_helper, data);
+  printf ("\n+=+%s+=+\n\n", __FUNCTION__);    
+}
+
+abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
+{
+  abstract_pkg_t * ab_pkg;
+
+  if(!(ab_pkg = abstract_pkg_fetch_by_name(hash, pkg_name)))
+    ab_pkg = add_new_abstract_pkg_by_name(hash, pkg_name);
+
+  return ab_pkg;
+}
+
+pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf)
+{
+     abstract_pkg_t * ab_pkg;
+     int arch_priority;
+
+     if(!pkg)
+	  return pkg;
+
+     arch_priority = pkg->arch_priority;
+
+     if (buildDepends(hash, pkg)<0){
+        fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
+        return NULL;
+     }
+     ab_pkg = ensure_abstract_pkg_by_name(hash, pkg->name);
+
+     if (set_status) {
+	  if (pkg->state_status == SS_INSTALLED) {
+	       ab_pkg->state_status = SS_INSTALLED;
+	  } else if (pkg->state_status == SS_UNPACKED) {
+	       ab_pkg->state_status = SS_UNPACKED;
+	  }
+     }
+
+     if(!ab_pkg->pkgs)
+	  ab_pkg->pkgs = pkg_vec_alloc();
+    
+     /* pkg_vec_insert_merge might munge package, but it returns an unmunged pkg */
+     pkg = pkg_vec_insert_merge(ab_pkg->pkgs, pkg, set_status,conf );
+     pkg->parent = ab_pkg;
+
+     if (buildProvides(hash, ab_pkg, pkg)<0){
+        fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
+        return NULL;
+     }
+     /* need to build the conflicts graph before replaces for correct calculation of replaced_by relation */
+     if (buildConflicts(hash, ab_pkg, pkg)<0){
+        fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
+        return NULL;
+     }
+     if (buildReplaces(hash, ab_pkg, pkg)<0) {
+        fprintf(stderr, "%s : This should never happen. Report this Bug in bugzilla please \n ",__FUNCTION__);
+        return NULL;
+     }
+    
+     buildDependedUponBy(pkg, ab_pkg);
+     return pkg;
+}
+
+/*
+ * this will assume that we've already determined that
+ * the abstract pkg doesn't exist, 'cause we should know these things...
+ */
+static abstract_pkg_t * add_new_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name)
+{
+  abstract_pkg_t * ab_pkg;
+
+  ab_pkg = abstract_pkg_new();
+  if (ab_pkg == NULL) { return NULL; }
+
+  ab_pkg->name = strdup(pkg_name);
+  hash_table_insert(hash, pkg_name, ab_pkg);
+
+  return ab_pkg;
+}
+
+
+pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name)
+{
+     hash_table_t *file_hash = &conf->file_hash;
+
+     return hash_table_get(file_hash, file_name); 
+}
+
+int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *owning_pkg)
+{
+     hash_table_t *file_hash = &conf->file_hash;
+     pkg_t *old_owning_pkg = hash_table_get(file_hash, file_name);
+     int file_name_len = strlen(file_name);
+
+     if (file_name[file_name_len -1] == '/')
+	  return 0;
+
+     if (conf->offline_root) {
+	  int len = strlen(conf->offline_root);
+	  if (strncmp(file_name, conf->offline_root, len) == 0) {
+	       file_name += len;
+	  }
+     }
+
+     // opkg_message(conf, OPKG_DEBUG2, "owning_pkg=%s filename=%s\n", owning_pkg->name, file_name);
+     hash_table_insert(file_hash, file_name, owning_pkg); 
+     if (old_owning_pkg) {
+	  str_list_remove_elt(old_owning_pkg->installed_files, file_name);
+	  /* mark this package to have its filelist written */
+	  old_owning_pkg->state_flag |= SF_FILELIST_CHANGED;
+	  owning_pkg->state_flag |= SF_FILELIST_CHANGED;
+     }
+     return 0;
+}
+
+
diff --git a/libopkg/pkg_hash.h b/libopkg/pkg_hash.h
new file mode 100644
index 0000000..7303418
--- /dev/null
+++ b/libopkg/pkg_hash.h
@@ -0,0 +1,61 @@
+/* pkg_hash.h - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_HASH_H
+#define PKG_HASH_H
+
+#include "pkg.h"
+#include "pkg_vec.h"
+#include "hash_table.h"
+
+
+int pkg_hash_init(const char *name, hash_table_t *hash, int len);
+void pkg_hash_deinit(hash_table_t *hash);
+void pkg_hash_map(hash_table_t *hash, void (*f)(void *data, void *entry), void *data);
+
+void pkg_hash_dump(hash_table_t *hash, void *data);
+void pkg_hash_fetch_available(hash_table_t *hash, pkg_vec_t *available);
+
+int pkg_hash_add_from_file(opkg_conf_t *conf, const char *file_name,
+			   pkg_src_t *src, pkg_dest_t *dest, int is_status_file);
+pkg_t *hash_insert_pkg(hash_table_t *hash, pkg_t *pkg, int set_status,opkg_conf_t *conf);
+
+abstract_pkg_t * ensure_abstract_pkg_by_name(hash_table_t * hash, const char * pkg_name);
+abstract_pkg_t * abstract_pkg_fetch_by_name(hash_table_t * hash, const char * pkg_name);
+pkg_vec_t *pkg_hash_fetch_by_name(hash_table_t *hash, const char *pkg_name);
+void pkg_hash_fetch_all_installed(hash_table_t *hash, pkg_vec_t *installed);
+pkg_t * pkg_hash_fetch_by_name_version(hash_table_t *hash, 
+				       const char *pkg_name,
+				       const char * version);
+abstract_pkg_vec_t *pkg_hash_fetch_all_installation_candidates(hash_table_t *hash, const char *name);
+pkg_t *pkg_hash_fetch_best_installation_candidate(opkg_conf_t *conf, abstract_pkg_t *apkg, 
+						  int (*constraint_fcn)(pkg_t *pkg, void *data), void *cdata, int quiet);
+pkg_t *pkg_hash_fetch_best_installation_candidate_by_name(opkg_conf_t *conf, const char *name);
+pkg_t *pkg_hash_fetch_installed_by_name(hash_table_t *hash,
+					const char *pkg_name);
+pkg_t *pkg_hash_fetch_installed_by_name_dest(hash_table_t *hash,
+					     const char *pkg_name,
+					     pkg_dest_t *dest);
+
+pkg_t *file_hash_get_file_owner(opkg_conf_t *conf, const char *file_name);
+int file_hash_set_file_owner(opkg_conf_t *conf, const char *file_name, pkg_t *pkg);
+
+/* XXX: shouldn't this go in pkg_vec.[ch]? */
+pkg_vec_t *pkg_vec_fetch_by_name(hash_table_t *hash, const char *pkg_name);
+
+#endif
+
diff --git a/libopkg/pkg_parse.c b/libopkg/pkg_parse.c
new file mode 100644
index 0000000..0bb4433
--- /dev/null
+++ b/libopkg/pkg_parse.c
@@ -0,0 +1,413 @@
+/* pkg_parse.c - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+#include <ctype.h>
+   
+#include "pkg.h"
+#include "opkg_utils.h"
+#include "pkg_parse.h"
+
+int isGenericFieldType(char * type, char * line)
+{
+    if(!strncmp(line, type, strlen(type)))
+	return 1;
+    return 0;
+}
+
+char * parseGenericFieldType(char * type, char * raw)
+{
+    char * field_value = raw + (strlen(type) + 1);
+    return trim_alloc(field_value);
+}
+
+void parseStatus(pkg_t *pkg, char * raw)
+{
+    char sw_str[64], sf_str[64], ss_str[64];
+
+    sscanf(raw, "Status: %s %s %s", sw_str, sf_str, ss_str);
+    pkg->state_want = pkg_state_want_from_str(sw_str);
+    pkg->state_flag = pkg_state_flag_from_str(sf_str);
+    pkg->state_status = pkg_state_status_from_str(ss_str);
+}
+
+char ** parseDependsString(char * raw, int * depends_count)
+{
+    char ** depends = NULL;
+    int line_count = 0;
+    char buff[2048], * dest;
+
+    while(raw && *raw && !isspace(*raw)) {
+	raw++;
+    }
+
+    if(line_is_blank(raw)){
+	*depends_count = line_count;
+	return NULL;
+    }
+    while(raw && *raw){
+	depends = (char **)realloc(depends, sizeof(char *) * (line_count + 1));
+	
+	while(isspace(*raw)) raw++;
+
+	dest = buff;
+	while((*raw != ',') && *raw)
+	    *dest++ = *raw++;
+
+	*dest = '\0';
+	depends[line_count] = trim_alloc(buff);
+	if(depends[line_count] ==NULL)
+	   return NULL;
+        line_count++;
+	if(*raw == ',')
+	    raw++;
+    }
+    *depends_count = line_count;
+    return depends;
+}
+
+void parseConffiles(pkg_t * pkg, char * raw)
+{
+    char file_name[1048], md5sum[1048];  /* please tell me there aren't any longer that 1k */
+
+    if(!strncmp(raw, "Conffiles:", 10))
+	raw += strlen("Conffiles:");
+
+    while(*raw && (sscanf(raw, "%s%s", file_name, md5sum) == 2)){
+	conffile_list_append(&pkg->conffiles, file_name, md5sum);
+	/*	fprintf(stderr, "%s %s ", file_name, md5sum);*/
+	while (*raw && isspace(*raw)) {
+	    raw++;
+	}
+	raw += strlen(file_name);
+	while (*raw && isspace(*raw)) {
+	    raw++;
+	}
+	raw += strlen(md5sum);
+    }
+}    
+
+int parseVersion(pkg_t *pkg, char *raw)
+{
+  char *colon, *eepochcolon;
+#ifdef USE_DEBVERSION
+  char *hyphen;
+#endif
+  unsigned long epoch;
+
+  if (!*raw) {
+      fprintf(stderr, "%s: ERROR: version string is empty", __FUNCTION__);
+      return EINVAL;
+  }
+
+  if (strncmp(raw, "Version:", 8) == 0) {
+      raw += 8;
+  }
+  while (*raw && isspace(*raw)) {
+      raw++;
+  }
+  
+  colon= strchr(raw,':');
+  if (colon) {
+    epoch= strtoul(raw,&eepochcolon,10);
+    if (colon != eepochcolon) {
+	fprintf(stderr, "%s: ERROR: epoch in version is not number", __FUNCTION__);
+	return EINVAL;
+    }
+    if (!*++colon) {
+	fprintf(stderr, "%s: ERROR: nothing after colon in version number", __FUNCTION__);
+	return EINVAL;
+    }
+    raw= colon;
+    pkg->epoch= epoch;
+  } else {
+    pkg->epoch= 0;
+  }
+
+  pkg->revision = "";
+  pkg->familiar_revision = "";
+
+  pkg->version= malloc(strlen(raw)+1);
+  if ( pkg->version == NULL ) {
+     fprintf(stderr, "%s: out of memory \n", __FUNCTION__);
+     return ENOMEM;
+  }
+  strcpy(pkg->version, raw);
+
+#ifdef USE_DEBVERSION
+  hyphen= strrchr(pkg->version,'-');
+
+  if (hyphen) {
+    *hyphen++= 0;
+    if (strncmp("fam", hyphen, 3) == 0) {
+      pkg->familiar_revision=hyphen+3;
+      hyphen= strrchr(pkg->version,'-');
+      if (hyphen) {
+	*hyphen++= 0;
+	pkg->revision = hyphen;
+      }
+    } else {
+      pkg->revision = hyphen;
+    }
+  }
+#endif
+
+/*
+  fprintf(stderr,"Parsed version: %lu, %s, %s, %s\n",
+	  pkg->epoch,
+	  pkg->version,
+	  pkg->revision,
+	  pkg->familiar_revision);
+*/
+	  
+  return 0;
+}
+
+
+/* This code is needed to insert in first position the keyword for the aligning bug */
+
+int alterProvidesLine(char *raw, char *temp)
+{
+
+
+  if (!*raw) {
+      fprintf(stderr, "%s: ERROR: Provides string is empty", __FUNCTION__);
+      return -EINVAL;
+  }
+
+  if ( temp == NULL ) {
+     fprintf(stderr, "%s: out of memory \n", __FUNCTION__);
+     return -ENOMEM;
+  }
+
+  if (strncmp(raw, "Provides:", 9) == 0) {
+      raw += 9;
+  }
+  while (*raw && isspace(*raw)) {
+      raw++;
+  }      
+  
+  snprintf ( temp, 35, "Provides: opkg_internal_use_only, ");           /* First part of the line */
+  while (*raw) {
+     strncat( temp, raw++, 1);
+  }
+  return 0;
+ 
+}
+
+/* Some random thoughts from Carl:
+
+   This function could be considerably simplified if we just kept
+   an array of all the generic string-valued field names, and looped
+   through those looking for a match. Also, these fields could perhaps
+   be stored in the package as an array as well, (or, probably better,
+   as an nv_pair_list_t).
+
+   Fields which require special parsing or storage, (such as Depends:
+   and Status:) could be handled as they are now. 
+*/
+/* XXX: FEATURE: The Suggests: field needs to be changed from a string
+   to a dependency list. And, since we already have
+   Depends/Pre-Depends and need to add Conflicts, Recommends, and
+   Enhances, perhaps we could generalize all of these and save some
+   code duplication.
+*/
+int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
+{
+    int reading_conffiles, reading_description;
+    int pkg_false_provides=1;
+    char ** lines;
+    char * provide=NULL;
+
+    pkg->src = src;
+    pkg->dest = dest;
+
+    reading_conffiles = reading_description = 0;
+
+    for (lines = *raw; *lines; lines++) {
+	/*	fprintf(stderr, "PARSING %s\n", *lines);*/
+	switch (**lines) {
+	case 'P':
+	    if(isGenericFieldType("Package:", *lines)) 
+		pkg->name = parseGenericFieldType("Package", *lines);
+	    else if(isGenericFieldType("Priority:", *lines))
+		pkg->priority = parseGenericFieldType("Priority", *lines);
+	    else if(isGenericFieldType("Provides", *lines)){
+/* Here we add the internal_use to align the off by one problem between provides_str and provides */
+        	provide = (char * ) malloc(strlen(*lines)+ 35 ); /* Preparing the space for the new opkg_internal_use_only */
+        	if ( alterProvidesLine(*lines,provide) ){
+        	    return EINVAL;
+        	}
+		pkg->provides_str = parseDependsString( provide, &pkg->provides_count);
+/* Let's try to hack a bit here.
+   The idea is that if a package has no Provides, we would add one generic, to permit the check of dependencies
+   in alot of other places. We will remove it before writing down the status database */
+        	pkg_false_provides=0;
+        	free(provide);
+    	    } 
+	    else if(isGenericFieldType("Pre-Depends", *lines))
+		pkg->pre_depends_str = parseDependsString(*lines, &pkg->pre_depends_count);
+	    break;
+
+	case 'A':
+	    if(isGenericFieldType("Architecture:", *lines))
+		pkg->architecture = parseGenericFieldType("Architecture", *lines);
+	    else if(isGenericFieldType("Auto-Installed:", *lines)) {
+		char *auto_installed_value;
+		auto_installed_value = parseGenericFieldType("Auto-Installed:", *lines);
+		if (strcmp(auto_installed_value, "yes") == 0) {
+		    pkg->auto_installed = 1;
+		}
+		free(auto_installed_value);
+	    }
+	    break;
+
+	case 'F':
+	    if(isGenericFieldType("Filename:", *lines))
+		pkg->filename = parseGenericFieldType("Filename", *lines);
+	    break;
+
+	case 'S':
+	    if(isGenericFieldType("Section:", *lines))
+		pkg->section = parseGenericFieldType("Section", *lines);
+	    else if(isGenericFieldType("Size:", *lines))
+		pkg->size = parseGenericFieldType("Size", *lines);
+	    else if(isGenericFieldType("Source:", *lines))
+		pkg->source = parseGenericFieldType("Source", *lines);
+	    else if(isGenericFieldType("Status", *lines))
+		parseStatus(pkg, *lines);
+	    else if(isGenericFieldType("Suggests", *lines))
+		pkg->suggests_str = parseDependsString(*lines, &pkg->suggests_count);
+	    break;
+
+	case 'M':
+	    if(isGenericFieldType("MD5sum:", *lines))
+		pkg->md5sum = parseGenericFieldType("MD5sum", *lines);
+	    /* The old opkg wrote out status files with the wrong case for MD5sum,
+		let's parse it either way */
+	    else if(isGenericFieldType("MD5Sum:", *lines))
+		pkg->md5sum = parseGenericFieldType("MD5Sum", *lines);
+	    else if(isGenericFieldType("Maintainer", *lines))
+		pkg->maintainer = parseGenericFieldType("Maintainer", *lines);
+	    break;
+
+	case 'I':
+	    if(isGenericFieldType("Installed-Size:", *lines))
+		pkg->installed_size = parseGenericFieldType("Installed-Size", *lines);
+	    else if(isGenericFieldType("Installed-Time:", *lines)) {
+		char *time_str = parseGenericFieldType("Installed-Time", *lines);
+		pkg->installed_time = strtoul(time_str, NULL, 0);
+	    }	    
+	    break;
+
+	case 'E':
+	    if(isGenericFieldType("Essential:", *lines)) {
+		char *essential_value;
+		essential_value = parseGenericFieldType("Essential", *lines);
+		if (strcmp(essential_value, "yes") == 0) {
+		    pkg->essential = 1;
+		}
+		free(essential_value);
+	    }
+	    break;
+
+	case 'V':
+	    if(isGenericFieldType("Version", *lines))
+		parseVersion(pkg, *lines);
+	    break;
+
+	case 'C':
+	    if(isGenericFieldType("Conffiles", *lines)){
+		parseConffiles(pkg, *lines);
+		reading_conffiles = 1;
+	    }
+	    else if(isGenericFieldType("Conflicts", *lines))
+		pkg->conflicts_str = parseDependsString(*lines, &pkg->conflicts_count);
+	    break;
+
+	case 'D':
+	    if(isGenericFieldType("Description", *lines)) {
+		pkg->description = parseGenericFieldType("Description", *lines);
+		reading_conffiles = 0;
+		reading_description = 1;
+	    }
+	    else if(isGenericFieldType("Depends", *lines))
+		pkg->depends_str = parseDependsString(*lines, &pkg->depends_count);
+	    break;
+
+	case 'R':
+	    if(isGenericFieldType("Recommends", *lines))
+	        pkg->recommends_str = parseDependsString(*lines, &pkg->recommends_count);
+	    else if(isGenericFieldType("Replaces", *lines))
+		pkg->replaces_str = parseDependsString(*lines, &pkg->replaces_count);
+	    
+	    break;
+
+	case ' ':
+	    if(reading_description) {
+		/* we already know it's not blank, so the rest of description */      
+		pkg->description = realloc(pkg->description,
+					   strlen(pkg->description)
+					   + 1 + strlen(*lines) + 1);
+		strcat(pkg->description, "\n");
+		strcat(pkg->description, (*lines));
+	    }
+	    else if(reading_conffiles)
+		parseConffiles(pkg, *lines);
+		
+	    break;
+
+	default:
+	    if(line_is_blank(*lines)) {
+		lines++;
+		goto out;
+	    }
+	}
+    }
+out:;
+    
+    *raw = lines;
+/* If the ipk has not a Provides line, we insert our false line */ 
+    if ( pkg_false_provides==1)
+       pkg->provides_str = parseDependsString ((char *)"Provides: opkg_internal_use_only ", &pkg->provides_count);
+
+    if (pkg->name) {
+	return 0;
+    } else {
+	return EINVAL;
+    }
+}
+
+int pkg_valorize_other_field(pkg_t *pkg, char ***raw)
+{
+    char ** lines;
+
+    for (lines = *raw; *lines; lines++) {
+	if(isGenericFieldType("Essential:", *lines)) {
+	    char *essential_value;
+	    essential_value = parseGenericFieldType("Essential", *lines);
+	    if (strcmp(essential_value, "yes") == 0) {
+		pkg->essential = 1;
+	    }
+	    free(essential_value);
+	}
+    }
+    *raw = lines;
+
+    return 0;
+}
diff --git a/libopkg/pkg_parse.h b/libopkg/pkg_parse.h
new file mode 100644
index 0000000..e6f02fd
--- /dev/null
+++ b/libopkg/pkg_parse.h
@@ -0,0 +1,31 @@
+/* pkg_parse.h - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_PARSE_H
+#define PKG_PARSE_H
+
+int isGenericFieldType(char * type, char * line);
+char * parseGenericFieldType(char * type, char * raw);
+void parseStatus(pkg_t *pkg, char * raw);
+int parseVersion(pkg_t *pkg, char *raw);
+char ** parseDependsString(char * raw, int * depends_count);
+int parseVersion(pkg_t *pkg, char *raw);
+void parseConffiles(pkg_t * pkg, char * raw);
+int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest);
+int pkg_valorize_other_field(pkg_t *pkg, char ***raw);
+
+#endif
diff --git a/libopkg/pkg_src.c b/libopkg/pkg_src.c
new file mode 100644
index 0000000..0566b7f
--- /dev/null
+++ b/libopkg/pkg_src.c
@@ -0,0 +1,43 @@
+/* pkg_src.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "pkg_src.h"
+#include "str_util.h"
+
+int pkg_src_init(pkg_src_t *src, const char *name, const char *base_url, const char *extra_data, int gzip)
+{
+    src->gzip = gzip;
+    src->name = str_dup_safe (name);
+    src->value = str_dup_safe (base_url);
+    if (extra_data)
+	src->extra_data = str_dup_safe (extra_data);
+    else
+	src->extra_data = NULL;
+    return 0;
+}
+
+void pkg_src_deinit(pkg_src_t *src)
+{
+    free (src->name);
+    free (src->value);
+    if (src->extra_data)
+	free (src->extra_data);
+}
+
+
diff --git a/libopkg/pkg_src.h b/libopkg/pkg_src.h
new file mode 100644
index 0000000..82060a7
--- /dev/null
+++ b/libopkg/pkg_src.h
@@ -0,0 +1,34 @@
+/* pkg_src.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_SRC_H
+#define PKG_SRC_H
+
+#include "nv_pair.h"
+
+typedef struct 
+{
+  char *name;
+  char *value;
+  char *extra_data;
+  int gzip;
+} pkg_src_t;
+
+int pkg_src_init(pkg_src_t *src, const char *name, const char *base_url, const char *extra_data, int gzip);
+void pkg_src_deinit(pkg_src_t *src);
+
+#endif
diff --git a/libopkg/pkg_src_list.c b/libopkg/pkg_src_list.c
new file mode 100644
index 0000000..c1e63b4
--- /dev/null
+++ b/libopkg/pkg_src_list.c
@@ -0,0 +1,75 @@
+/* pkg_src_list.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "pkg_src_list.h"
+#include "void_list.h"
+
+int pkg_src_list_init(pkg_src_list_t *list)
+{
+    return void_list_init((void_list_t *) list);
+}
+
+void pkg_src_list_deinit(pkg_src_list_t *list)
+{
+    pkg_src_list_elt_t *iter;
+    pkg_src_t *pkg_src;
+
+    for (iter = list->head; iter; iter = iter->next) {
+      pkg_src = iter->data;
+      pkg_src_deinit(pkg_src);
+
+      /* malloced in pkg_src_list_append */
+      free(pkg_src);
+      iter->data = NULL;
+    }
+    void_list_deinit((void_list_t *) list);
+}
+
+pkg_src_t *pkg_src_list_append(pkg_src_list_t *list,
+			       const char *name, const char *base_url, const char *extra_data,
+			       int gzip)
+{
+    int err;
+
+    /* freed in pkg_src_list_deinit */
+    pkg_src_t *pkg_src = malloc(sizeof(pkg_src_t));
+
+    if (pkg_src == NULL) {
+	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	return NULL;
+    }
+    pkg_src_init(pkg_src, name, base_url, extra_data, gzip);
+
+    err = void_list_append((void_list_t *) list, pkg_src);
+    if (err) {
+	return NULL;
+    }
+
+    return pkg_src;
+}
+
+int pkg_src_list_push(pkg_src_list_t *list, pkg_src_t *data)
+{
+    return void_list_push((void_list_t *) list, data);
+}
+
+pkg_src_list_elt_t *pkg_src_list_pop(pkg_src_list_t *list)
+{
+    return (pkg_src_list_elt_t *) void_list_pop((void_list_t *) list);
+}
diff --git a/libopkg/pkg_src_list.h b/libopkg/pkg_src_list.h
new file mode 100644
index 0000000..074ff48
--- /dev/null
+++ b/libopkg/pkg_src_list.h
@@ -0,0 +1,57 @@
+/* pkg_src_list.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_SRC_LIST_H
+#define PKG_SRC_LIST_H
+
+#include "pkg_src.h"
+
+typedef struct pkg_src_list_elt pkg_src_list_elt_t;
+struct pkg_src_list_elt
+{
+    pkg_src_list_elt_t *next;
+    pkg_src_t *data;
+};
+
+typedef struct pkg_src_list pkg_src_list_t;
+struct pkg_src_list
+{
+    pkg_src_list_elt_t pre_head;
+    pkg_src_list_elt_t *head;
+    pkg_src_list_elt_t *tail;
+};
+
+static inline int pkg_src_list_empty(pkg_src_list_t *list)
+{
+     if (list->head == NULL)
+	  return 1;
+     else
+	  return 0;
+}
+
+int pkg_src_list_elt_init(pkg_src_list_elt_t *elt, nv_pair_t *data);
+void pkg_src_list_elt_deinit(pkg_src_list_elt_t *elt);
+
+int pkg_src_list_init(pkg_src_list_t *list);
+void pkg_src_list_deinit(pkg_src_list_t *list);
+
+pkg_src_t *pkg_src_list_append(pkg_src_list_t *list, const char *name, const char *root_dir, const char *extra_data, int gzip);
+int pkg_src_list_push(pkg_src_list_t *list, pkg_src_t *data);
+pkg_src_list_elt_t *pkg_src_list_pop(pkg_src_list_t *list);
+
+#endif
+
diff --git a/libopkg/pkg_vec.c b/libopkg/pkg_vec.c
new file mode 100644
index 0000000..2d22d91
--- /dev/null
+++ b/libopkg/pkg_vec.c
@@ -0,0 +1,236 @@
+/* pkg_vec.c - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <stdlib.h>
+#include <fnmatch.h>
+#include "xregex.h"
+#include "opkg.h"
+#include "pkg.h"
+
+pkg_vec_t * pkg_vec_alloc(void)
+{
+    pkg_vec_t * vec = (pkg_vec_t *)malloc(sizeof(pkg_vec_t));
+    if (!vec) {
+      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+      return NULL;
+    }
+    vec->pkgs = NULL;
+    vec->len = 0;
+
+    return vec;
+}
+
+void pkg_vec_free(pkg_vec_t *vec)
+{
+    free(vec->pkgs);
+    free(vec);
+}
+
+/*
+ * assumption: all names in a vector are identical
+ * assumption: all version strings are trimmed,
+ *             so identical versions have identical version strings,
+ *             implying identical packages; let's marry these
+ */
+pkg_t *pkg_vec_insert_merge(pkg_vec_t *vec, pkg_t *pkg, int set_status,opkg_conf_t *conf)
+{
+     int i;
+     int found = 0;
+
+     /* look for a duplicate pkg by name, version, and architecture */
+     for (i = 0; i < vec->len; i++){
+         opkg_message(conf, OPKG_DEBUG2, "Function: %s. Found pkg=%s version=%s arch=%s cmp=%s version=%s arch=%s \n", 
+                      __FUNCTION__, pkg->name, pkg->version, pkg->architecture, 
+                       vec->pkgs[i]->name, vec->pkgs[i]->version,vec->pkgs[i]->architecture );
+	  if ((strcmp(pkg->name, vec->pkgs[i]->name) == 0)
+	      && (pkg_compare_versions(pkg, vec->pkgs[i]) == 0)
+	      && (strcmp(pkg->architecture, vec->pkgs[i]->architecture) == 0)) {
+	       found  = 1;
+               opkg_message(conf, OPKG_DEBUG2, "Function: %s. Found duplicate for pkg=%s version=%s arch=%s\n",
+                             __FUNCTION__, pkg->name, pkg->version, pkg->architecture);
+	       break;
+	  }
+     }
+
+     /* we didn't find one, add it */
+     if (!found){   
+         opkg_message(conf, OPKG_DEBUG2, "Function: %s. Adding new pkg=%s version=%s arch=%s\n",
+                      __FUNCTION__, pkg->name, pkg->version, pkg->architecture);
+
+	  vec->pkgs = (pkg_t **)realloc(vec->pkgs, (vec->len + 1) * sizeof(pkg_t *));
+	  vec->pkgs[vec->len] = pkg;
+	  vec->len++;
+	  return pkg;
+     }
+     /* update the one that we have */
+     else {
+          opkg_message(conf, OPKG_DEBUG2, "Function: %s. calling pkg_merge for pkg=%s version=%s arch=%s",
+                        __FUNCTION__, pkg->name, pkg->version, pkg->architecture);
+	  if (set_status) {
+	       /* this is from the status file, so need to merge with existing database */
+               opkg_message(conf, OPKG_DEBUG2, " with set_status\n");
+	       pkg_merge(vec->pkgs[i], pkg, set_status);
+	       /* XXX: CLEANUP: It's not so polite to free something here
+		  that was passed in from above. */
+	       pkg_deinit(pkg);
+	       free(pkg);
+	  } else {
+               opkg_message(conf, OPKG_DEBUG2, " WITHOUT set_status\n");
+	       /* just overwrite the old one */
+	       pkg_deinit(vec->pkgs[i]);
+	       free(vec->pkgs[i]);
+	       vec->pkgs[i] = pkg;
+	  }
+	  return vec->pkgs[i];
+     }
+}
+
+void pkg_vec_insert(pkg_vec_t *vec, const pkg_t *pkg)
+{
+     int i;
+     int found = 0;
+
+#if 0
+     /* look for a duplicate pkg by name, version, and architecture */
+     for (i = 0; i < vec->len; i++)
+	  if ((strcmp(pkg->name, vec->pkgs[i]->name) == 0)
+	      && (pkg_compare_versions(pkg, vec->pkgs[i]) == 0)
+	      && (strcmp(pkg->architecture, vec->pkgs[i]->name) == 0)) {
+	       found = 1;
+	       break;
+	  }
+#endif
+
+     /* we didn't find one, add it */
+     if(!found){   
+	  vec->pkgs = (pkg_t **)realloc(vec->pkgs, (vec->len + 1) * sizeof(pkg_t *));
+	  *(const pkg_t **)&vec->pkgs[vec->len] = pkg;
+	  vec->len++;
+     }
+}
+
+int pkg_vec_contains(pkg_vec_t *vec, pkg_t *apkg)
+{
+     int i;
+     for (i = 0; i < vec->len; i++)
+	  if (vec->pkgs[i] == apkg)
+	       return 1;
+     return 0;
+}
+
+typedef int (*compare_fcn_t)(const void *, const void *);
+void pkg_vec_sort(pkg_vec_t *vec, int (*compar)(pkg_t *, pkg_t *))
+{
+     qsort(vec->pkgs, vec->len, sizeof(pkg_t *), (compare_fcn_t)compar);
+}
+
+int pkg_vec_clear_marks(pkg_vec_t *vec)
+{
+     int npkgs = vec->len;
+     int i;
+     for (i = 0; i < npkgs; i++) {
+	  pkg_t *pkg = vec->pkgs[i];
+	  pkg->state_flag &= ~SF_MARKED;
+     }
+     return 0;
+}
+
+int pkg_vec_mark_if_matches(pkg_vec_t *vec, const char *pattern)
+{
+     int matching_count = 0;
+     pkg_t **pkgs = vec->pkgs;
+     int npkgs = vec->len;
+     int i;
+     for (i = 0; i < npkgs; i++) {
+	  pkg_t *pkg = pkgs[i];
+	  if (fnmatch(pattern, pkg->name, 0)==0) {
+	       pkg->state_flag |= SF_MARKED;
+	       matching_count++;
+	  }
+     }
+     return matching_count;
+}
+
+
+abstract_pkg_vec_t * abstract_pkg_vec_alloc(void)
+{
+    abstract_pkg_vec_t * vec ; 
+    vec = (abstract_pkg_vec_t *)malloc(sizeof(abstract_pkg_vec_t));
+    if (!vec) {
+      fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+      return NULL;
+    }
+    vec->pkgs = NULL;
+    vec->len = 0;
+
+    return vec;
+}
+
+void abstract_pkg_vec_free(abstract_pkg_vec_t *vec)
+{
+    free(vec->pkgs);
+    free(vec);
+}
+
+/*
+ * assumption: all names in a vector are unique
+ */
+void abstract_pkg_vec_insert(abstract_pkg_vec_t *vec, abstract_pkg_t *pkg)
+{
+    int i;
+
+#if 0
+    /* look for a duplicate pkg by name */
+    for(i = 0; i < vec->len; i++)
+	if (strcmp(pkg->name, vec->pkgs[i]->name) == 0)
+	    break;
+
+    /* we didn't find one, add it */
+    if(i == vec->len){   
+#endif
+	vec->pkgs = 
+	  (abstract_pkg_t **)
+	    realloc(vec->pkgs, (vec->len + 1) * sizeof(abstract_pkg_t *));
+	vec->pkgs[vec->len] = pkg;
+	vec->len++;
+#if 0
+    }
+#endif
+}
+
+abstract_pkg_t * abstract_pkg_vec_get(abstract_pkg_vec_t *vec, int i)
+{
+    if (vec->len > i) 
+	return vec->pkgs[i];
+    else
+	return NULL;
+}
+
+int abstract_pkg_vec_contains(abstract_pkg_vec_t *vec, abstract_pkg_t *apkg)
+{
+     int i;
+     for (i = 0; i < vec->len; i++)
+	  if (vec->pkgs[i] == apkg)
+	       return 1;
+     return 0;
+}
+
+void abstract_pkg_vec_sort(pkg_vec_t *vec, int (*compar)(abstract_pkg_t *, abstract_pkg_t *))
+{
+     qsort(vec->pkgs, vec->len, sizeof(pkg_t *), (compare_fcn_t)compar);
+}
+
diff --git a/libopkg/pkg_vec.h b/libopkg/pkg_vec.h
new file mode 100644
index 0000000..2bc1631
--- /dev/null
+++ b/libopkg/pkg_vec.h
@@ -0,0 +1,62 @@
+/* pkg_vec.h - the itsy package management system
+
+   Steven M. Ayer
+   
+   Copyright (C) 2002 Compaq Computer Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef PKG_VEC_H
+#define PKG_VEC_H
+
+typedef struct pkg pkg_t;
+typedef struct abstract_pkg abstract_pkg_t;
+
+struct pkg_vec
+{
+    pkg_t **pkgs;
+    int len;
+};
+typedef struct pkg_vec pkg_vec_t;
+
+struct abstract_pkg_vec
+{
+    abstract_pkg_t **pkgs;
+    int len;
+};
+typedef struct abstract_pkg_vec abstract_pkg_vec_t;
+
+
+pkg_vec_t * pkg_vec_alloc(void);
+void pkg_vec_free(pkg_vec_t *vec);
+void marry_two_packages(pkg_t * newpkg, pkg_t * oldpkg);
+
+void pkg_vec_add(pkg_vec_t *vec, pkg_t *pkg);
+/* pkg_vec_insert_merge: might munge pkg.
+*  returns the pkg that is in the pkg graph */
+pkg_t *pkg_vec_insert_merge(pkg_vec_t *vec, pkg_t *pkg, int set_status, opkg_conf_t *conf);
+/* this one never munges pkg */
+void pkg_vec_insert(pkg_vec_t *vec, const pkg_t *pkg);
+int pkg_vec_contains(pkg_vec_t *vec, pkg_t *apkg);
+void pkg_vec_sort(pkg_vec_t *vec, int (*compar)(pkg_t *, pkg_t *));
+
+int pkg_vec_clear_marks(pkg_vec_t *vec);
+int pkg_vec_mark_if_matches(pkg_vec_t *vec, const char *pattern);
+
+abstract_pkg_vec_t * abstract_pkg_vec_alloc(void);
+void abstract_pkg_vec_free(abstract_pkg_vec_t *vec);
+void abstract_pkg_vec_insert(abstract_pkg_vec_t *vec, abstract_pkg_t *pkg);
+abstract_pkg_t * abstract_pkg_vec_get(abstract_pkg_vec_t *vec, int i);
+int abstract_pkg_vec_contains(abstract_pkg_vec_t *vec, abstract_pkg_t *apkg);
+void abstract_pkg_vec_sort(pkg_vec_t *vec, int (*compar)(abstract_pkg_t *, abstract_pkg_t *));
+#endif
+
diff --git a/libopkg/sprintf_alloc.c b/libopkg/sprintf_alloc.c
new file mode 100644
index 0000000..1d53b20
--- /dev/null
+++ b/libopkg/sprintf_alloc.c
@@ -0,0 +1,73 @@
+/* sprintf_alloc.c -- like sprintf with memory allocation
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <stdarg.h>
+
+#include "sprintf_alloc.h"
+
+int sprintf_alloc(char **str, const char *fmt, ...)
+{
+    va_list ap;
+    char *new_str;
+    int n, size = 100;
+
+    if (!str) {
+      fprintf(stderr, "Null string pointer passed to sprintf_alloc\n");
+      return -1;
+    }
+    if (!fmt) {
+      fprintf(stderr, "Null fmt string passed to sprintf_alloc\n");
+      return -1;
+    }
+
+    /* On x86_64 systems, any strings over 100 were segfaulting.  
+       It seems that the ap needs to be reinitalized before every
+       use of the v*printf() functions. I pulled the functionality out
+       of vsprintf_alloc and combined it all here instead. 
+    */
+    
+
+    /* ripped more or less straight out of PRINTF(3) */
+
+    if ((new_str = malloc(size)) == NULL) 
+      return -1;
+
+    *str = new_str;
+    while(1) {
+      va_start(ap, fmt);
+      n = vsnprintf (new_str, size, fmt, ap);
+      va_end(ap);
+      /* If that worked, return the size. */
+      if (n > -1 && n < size)
+	return n;
+	/* Else try again with more space. */
+	if (n > -1)    /* glibc 2.1 */
+	    size = n+1; /* precisely what is needed */
+	else           /* glibc 2.0 */
+	    size *= 2;  /* twice the old size */
+	new_str = realloc(new_str, size);
+	if (new_str == NULL) {
+	    free(new_str);
+	    *str = NULL;
+	    return -1;
+	}
+	*str = new_str;
+    }
+
+    return -1; /* Just to be correct - it probably won't get here */
+}
diff --git a/libopkg/sprintf_alloc.h b/libopkg/sprintf_alloc.h
new file mode 100644
index 0000000..3d68d69
--- /dev/null
+++ b/libopkg/sprintf_alloc.h
@@ -0,0 +1,23 @@
+/* sprintf_alloca.c -- like sprintf with memory allocation
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+*/
+
+#ifndef SPRINTF_ALLOC_H
+#define SPRINTF_ALLOC_H
+
+int sprintf_alloc(char **str, const char *fmt, ...);
+
+#endif
diff --git a/libopkg/str_list.c b/libopkg/str_list.c
new file mode 100644
index 0000000..e79bf8d
--- /dev/null
+++ b/libopkg/str_list.c
@@ -0,0 +1,76 @@
+/* str_list.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "str_list.h"
+
+int str_list_elt_init(str_list_elt_t *elt, char *data)
+{
+    return void_list_elt_init((void_list_elt_t *) elt, data);
+}
+
+void str_list_elt_deinit(str_list_elt_t *elt)
+{
+    void_list_elt_deinit((void_list_elt_t *) elt);
+}
+
+str_list_t *str_list_alloc()
+{
+     str_list_t *list = (str_list_t *)malloc(sizeof(str_list_t));
+     if (list)
+	  str_list_init(list);
+     return list;
+}
+
+int str_list_init(str_list_t *list)
+{
+    return void_list_init((void_list_t *) list);
+}
+
+void str_list_deinit(str_list_t *list)
+{
+    void_list_deinit((void_list_t *) list);
+}
+
+int str_list_append(str_list_t *list, char *data)
+{
+    return void_list_append((void_list_t *) list, data);
+}
+
+int str_list_push(str_list_t *list, char *data)
+{
+    return void_list_push((void_list_t *) list, data);
+}
+
+str_list_elt_t *str_list_pop(str_list_t *list)
+{
+    return (str_list_elt_t *) void_list_pop((void_list_t *) list);
+}
+
+str_list_elt_t *str_list_remove(str_list_t *list, str_list_elt_t **iter)
+{
+    return (str_list_elt_t *) void_list_remove((void_list_t *) list,
+					       (void_list_elt_t **) iter);
+}
+
+char *str_list_remove_elt(str_list_t *list, const char *target_str)
+{
+     return (char *)void_list_remove_elt((void_list_t *) list,
+					 (void *)target_str,
+					 (void_list_cmp_t)strcmp);
+}
diff --git a/libopkg/str_list.h b/libopkg/str_list.h
new file mode 100644
index 0000000..858ccd9
--- /dev/null
+++ b/libopkg/str_list.h
@@ -0,0 +1,51 @@
+/* str_list.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef STR_LIST_H
+#define STR_LIST_H
+
+#include "void_list.h"
+
+typedef struct str_list_elt str_list_elt_t;
+struct str_list_elt
+{
+    str_list_elt_t *next;
+    char *data;
+};
+
+typedef struct xstr_list str_list_t;
+struct xstr_list
+{
+    str_list_elt_t pre_head;
+    str_list_elt_t *head;
+    str_list_elt_t *tail;
+};
+
+int str_list_elt_init(str_list_elt_t *elt, char *data);
+void str_list_elt_deinit(str_list_elt_t *elt);
+
+str_list_t *str_list_alloc(void);
+int str_list_init(str_list_t *list);
+void str_list_deinit(str_list_t *list);
+
+int str_list_append(str_list_t *list, char *data);
+int str_list_push(str_list_t *list, char *data);
+str_list_elt_t *str_list_pop(str_list_t *list);
+str_list_elt_t *str_list_remove(str_list_t *list, str_list_elt_t **iter);
+char *str_list_remove_elt(str_list_t *list, const char *target_str);
+
+#endif
diff --git a/libopkg/str_util.c b/libopkg/str_util.c
new file mode 100644
index 0000000..e1f5e68
--- /dev/null
+++ b/libopkg/str_util.c
@@ -0,0 +1,73 @@
+/* str_utils.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+
+int str_starts_with(const char *str, const char *prefix)
+{
+    return (strncmp(str, prefix, strlen(prefix)) == 0);
+}
+
+int str_ends_with(const char *str, const char *suffix)
+{
+    int suffix_len;
+    int str_len;
+
+    str_len = strlen(str);
+    suffix_len = strlen(suffix);
+
+    if (str_len < suffix_len) {
+	return 0;
+    }
+
+    return (strcmp(str + str_len - suffix_len, suffix) == 0);
+}
+
+int str_chomp(char *str)
+{
+    if (str[strlen(str) - 1] == '\n') {
+	str[strlen(str) - 1] = '\0';
+	return 1;
+    }
+    return 0;
+}
+
+int str_tolower(char *str)
+{
+    while (*str) {
+	*str = tolower(*str);
+	str++;
+    }
+
+    return 0;
+}
+
+int str_toupper(char *str)
+{
+    while (*str) {
+	*str = toupper(*str);
+	str++;
+    }
+
+    return 0;
+}
+
+char *str_dup_safe(const char *str)
+{
+    return str ? strdup(str) : NULL;
+}
+
diff --git a/libopkg/str_util.h b/libopkg/str_util.h
new file mode 100644
index 0000000..c1acab0
--- /dev/null
+++ b/libopkg/str_util.h
@@ -0,0 +1,28 @@
+/* str_utils.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef STR_UTILS_H
+#define STR_UTILS_H
+
+int str_starts_with(const char *str, const char *prefix);
+int str_ends_with(const char *str, const char *suffix);
+int str_chomp(char *str);
+int str_tolower(char *str);
+int str_toupper(char *str);
+char *str_dup_safe(const char *str);
+
+#endif
diff --git a/libopkg/user.c b/libopkg/user.c
new file mode 100644
index 0000000..98ab7b9
--- /dev/null
+++ b/libopkg/user.c
@@ -0,0 +1,58 @@
+/* user.c - the itsy package management system
+
+   Jamey Hicks
+
+   Copyright (C) 2002 Hewlett Packard Company
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <stdio.h>
+#include <stdarg.h>
+#include "file_util.h"
+#include "str_util.h"
+#ifdef OPKG_LIB	
+#include "libopkg.h"
+#endif	
+
+
+#ifdef OPKG_LIB
+static char *question = NULL;
+static int question_len = 255;
+#endif	
+char *get_user_response(const char *format, ...)
+{
+     int len = question_len;
+     va_list ap;
+     char *response;
+     va_start(ap, format);
+
+#ifndef OPKG_LIB
+     vprintf(format, ap);
+     do {
+	  response = file_read_line_alloc(stdin);
+     } while (response == NULL);
+#else
+     do {
+	  if (question == NULL || len > question_len) {
+	       question = realloc(question, len + 1);
+	       question_len = len;
+	  }
+	  len = vsnprintf(question,question_len,format,ap);
+     } while (len > question_len);
+     response = strdup(opkg_cb_response(question));
+#endif
+     str_chomp(response);
+     str_tolower(response);
+
+     return response;
+}
diff --git a/libopkg/user.h b/libopkg/user.h
new file mode 100644
index 0000000..fa0f818
--- /dev/null
+++ b/libopkg/user.h
@@ -0,0 +1,23 @@
+/* user.c - the itsy package management system
+
+   Jamey Hicks
+
+   Copyright (C) 2002 Hewlett Packard Company
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include <stdio.h>
+#include <stdarg.h>
+
+char *get_user_response(const char *format, ...);
+
diff --git a/libopkg/void_list.c b/libopkg/void_list.c
new file mode 100644
index 0000000..af8e6a3
--- /dev/null
+++ b/libopkg/void_list.c
@@ -0,0 +1,194 @@
+/* void_list.c - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <errno.h>
+
+#include "void_list.h"
+
+int void_list_elt_init(void_list_elt_t *elt, void *data)
+{
+    elt->next = NULL;
+    elt->data = data;
+
+    return 0;
+}
+
+void void_list_elt_deinit(void_list_elt_t *elt)
+{
+    void_list_elt_init(elt, NULL);
+}
+
+int void_list_init(void_list_t *list)
+{
+    void_list_elt_init(&list->pre_head, NULL);
+    list->head = NULL;
+    list->pre_head.next = list->head;
+    list->tail = NULL;
+
+    return 0;
+}
+
+void void_list_deinit(void_list_t *list)
+{
+    void_list_elt_t *elt;
+
+    while (list->head) {
+	elt = void_list_pop(list);
+	void_list_elt_deinit(elt);
+	/* malloced in void_list_append */
+	free(elt);
+    }
+}
+
+int void_list_append(void_list_t *list, void *data)
+{
+    void_list_elt_t *elt;
+
+    /* freed in void_list_deinit */
+    elt = malloc(sizeof(void_list_elt_t));
+    if (elt == NULL) {
+	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	return ENOMEM;
+    }
+
+    void_list_elt_init(elt, data);
+
+    if (list->tail) {
+	list->tail->next = elt;
+	list->tail = elt;
+    } else {
+	list->head = elt;
+	list->pre_head.next = list->head;
+	list->tail = elt;
+    }
+
+    return 0;
+}
+
+int void_list_push(void_list_t *list, void *data)
+{
+    void_list_elt_t *elt;
+
+    elt = malloc(sizeof(void_list_elt_t));
+    if (elt == NULL) {
+	fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
+	return ENOMEM;
+    }
+
+    void_list_elt_init(elt, data);
+
+    elt->next = list->head;
+    list->head->next = elt;
+    if (list->tail == NULL) {
+	list->tail = list->head;
+    }
+
+    return 0;
+}
+
+void_list_elt_t *void_list_pop(void_list_t *list)
+{
+    void_list_elt_t *elt;
+
+    elt = list->head;
+
+    if (list->head) {
+	list->head = list->head->next;
+	list->pre_head.next = list->head;
+	if (list->head == NULL) {
+	    list->tail = NULL;
+	}
+    }
+
+    return elt;
+}
+
+void *void_list_remove(void_list_t *list, void_list_elt_t **iter)
+{
+    void_list_elt_t *prior;
+    void_list_elt_t *old_elt;
+    void *old_data;
+
+    old_elt = *iter;
+    old_data = old_elt->data;
+
+    if (old_elt == list->head) {
+	prior = &list->pre_head;
+	void_list_pop(list);
+    } else {
+	for (prior = list->head; prior; prior = prior->next) {
+	    if (prior->next == old_elt) {
+		break;
+	    }
+	}
+	if (prior == NULL || prior->next != old_elt) {
+	    fprintf(stderr, "%s: ERROR: element not found in list\n", __FUNCTION__);
+	    return NULL;
+	}
+	prior->next = old_elt->next;
+
+	if (old_elt == list->tail) {
+	    list->tail = prior;
+	}
+    }
+
+    void_list_elt_deinit(old_elt);
+    *iter = prior;
+
+    return old_data;
+}
+
+/* remove element containing elt data, using cmp(elt->data, target_data) == 0. */
+void *void_list_remove_elt(void_list_t *list, const void *target_data, void_list_cmp_t cmp)
+{
+     void_list_elt_t *prior;
+     void_list_elt_t *old_elt = NULL;
+     void *old_data = NULL;
+
+     /* first element */
+     if (list->head && list->head->data && (cmp(list->head->data, target_data) == 0)) {
+	  old_elt = list->head;
+	  old_data = list->head->data;
+	  void_list_pop(list);
+     } else {
+	  int found = 0;
+	  for (prior = list->head; prior && prior->next; prior = prior->next) {
+	       if (prior->next->data && (cmp(prior->next->data, target_data) == 0)) {
+		    old_elt = prior->next;
+		    old_data = old_elt->data;
+		    found = 1;
+		    break;
+	       }
+	  }
+	  if (!found) {
+	       return NULL;
+	  }
+	  prior->next = old_elt->next;
+
+	  if (old_elt == list->tail) {
+	       list->tail = prior;
+	  }
+     }
+     if (old_elt)
+	  void_list_elt_deinit(old_elt);
+
+     if (old_data)
+	  return old_data;
+     else
+	  return NULL;
+}
diff --git a/libopkg/void_list.h b/libopkg/void_list.h
new file mode 100644
index 0000000..7642905
--- /dev/null
+++ b/libopkg/void_list.h
@@ -0,0 +1,59 @@
+/* void_list.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef VOID_LIST_H
+#define VOID_LIST_H
+
+typedef struct void_list_elt void_list_elt_t;
+struct void_list_elt
+{
+    void_list_elt_t *next;
+    void *data;
+};
+
+typedef struct void_list void_list_t;
+struct void_list
+{
+    void_list_elt_t pre_head;
+    void_list_elt_t *head;
+    void_list_elt_t *tail;
+};
+
+static inline int void_list_empty(void_list_t *list)
+{
+     if (list->head == NULL)
+	  return 1;
+     else
+	  return 0;
+}
+
+int void_list_elt_init(void_list_elt_t *elt, void *data);
+void void_list_elt_deinit(void_list_elt_t *elt);
+
+int void_list_init(void_list_t *list);
+void void_list_deinit(void_list_t *list);
+
+int void_list_append(void_list_t *list, void *data);
+int void_list_push(void_list_t *list, void *data);
+void_list_elt_t *void_list_pop(void_list_t *list);
+
+void *void_list_remove(void_list_t *list, void_list_elt_t **iter);
+/* remove element containing elt data, using cmp(elt->data, target_data) == 0. */
+typedef int (*void_list_cmp_t)(const void *, const void *);
+void *void_list_remove_elt(void_list_t *list, const void *target_data, void_list_cmp_t cmp);
+
+#endif
diff --git a/libopkg/xregex.c b/libopkg/xregex.c
new file mode 100644
index 0000000..7e50050
--- /dev/null
+++ b/libopkg/xregex.c
@@ -0,0 +1,48 @@
+/* xregex.c - regex functions with error messages
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+*/
+
+#include "opkg.h"
+
+#include "xregex.h"
+
+static void print_regcomp_err(const regex_t *preg, int err);
+
+int xregcomp(regex_t *preg, const char *regex, int cflags)
+{
+    int err;
+    err = regcomp(preg, regex, cflags);
+    if (err) {
+	print_regcomp_err(preg, err);
+    }
+
+    return err;
+}
+
+static void print_regcomp_err(const regex_t *preg, int err)
+{
+    int size;
+    char *error;
+    
+    fprintf(stderr, "%s: Error compiling regex:", __FUNCTION__);
+    size = regerror(err, preg, 0, 0);
+    error = malloc(size);
+    if (error) {
+	regerror(err, preg, error, size);
+	fprintf(stderr, "%s\n", error);
+    }
+    free(error);
+}
diff --git a/libopkg/xregex.h b/libopkg/xregex.h
new file mode 100644
index 0000000..f67572b
--- /dev/null
+++ b/libopkg/xregex.h
@@ -0,0 +1,31 @@
+/* xregex.h - regex functions with error messages
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+*/
+
+#ifndef XREGEX_H
+#define XREGEX_H
+
+#include <sys/types.h>
+#include <regex.h>
+
+int xregcomp(regex_t *preg, const char *regex, int cflags);
+static inline void xregfree(regex_t *preg)
+{
+     regfree(preg);
+}
+
+
+#endif
diff --git a/libopkg/xsystem.c b/libopkg/xsystem.c
new file mode 100644
index 0000000..06d6ae4
--- /dev/null
+++ b/libopkg/xsystem.c
@@ -0,0 +1,64 @@
+/* xsystem.c - system(3) with error messages
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "opkg.h"
+#include <sys/wait.h>
+
+#include "xsystem.h"
+
+/* XXX: FEATURE: I shouldn't actually use system(3) at all. I don't
+   really need the /bin/sh invocation which takes resources and
+   introduces security problems. I should switch all of this to a sort
+   of execl() or execv() interface/implementation.
+*/
+
+/* Like system(3), but with error messages printed if the fork fails
+   or if the child process dies due to an uncaught signal. Also, the
+   return value is a bit simpler:
+
+   -1 if there was any problem
+   Otherwise, the 8-bit return value of the program ala WEXITSTATUS
+   as defined in <sys/wait.h>.
+*/
+int xsystem(const char *cmd)
+{
+    int err;
+
+    err = system(cmd);
+
+    if (err == -1) {
+	fprintf(stderr, "%s: ERROR: fork failed before execution: `%s'\n",
+		__FUNCTION__, cmd);
+	return -1;
+    }
+
+    if (WIFSIGNALED(err)) {
+	fprintf(stderr, "%s: ERROR: Child process died due to signal %d: `%s'\n",
+		__FUNCTION__, WTERMSIG(err), cmd);
+	return -1;
+    }
+
+    if (WIFEXITED(err)) {
+	/* Normal child exit */
+	return WEXITSTATUS(err);
+    }
+
+    fprintf(stderr, "%s: ERROR: Received unintelligible return value from system: %d",
+	    __FUNCTION__, err);
+    return -1;
+}
+	 
diff --git a/libopkg/xsystem.h b/libopkg/xsystem.h
new file mode 100644
index 0000000..cc1ca2a
--- /dev/null
+++ b/libopkg/xsystem.h
@@ -0,0 +1,34 @@
+/* xsystem.h - system(3) with error messages
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef XSYSTEM_H
+#define XSYSTEM_H
+
+#include <stdlib.h>
+
+/* Like system(3), but with error messages printed if the fork fails
+   or if the child process dies due to an uncaught signal. Also, the
+   return value is a bit simpler:
+
+   -1 if there was any problem
+   Otherwise, the 8-bit return value of the program ala WEXITSTATUS
+   as defined in <sys/wait.h>.
+*/
+int xsystem(const char *cmd);
+
+#endif
+