diff options
Diffstat (limited to 'ipkg_install.c')
| -rw-r--r-- | ipkg_install.c | 1942 |
1 files changed, 1942 insertions, 0 deletions
diff --git a/ipkg_install.c b/ipkg_install.c new file mode 100644 index 0000000..aa48d65 --- /dev/null +++ b/ipkg_install.c @@ -0,0 +1,1942 @@ +/* ipkg_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 "ipkg.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 "ipkg_install.h" +#include "ipkg_configure.h" +#include "ipkg_download.h" +#include "ipkg_remove.h" + +#include "ipkg_utils.h" +#include "ipkg_message.h" + +#include "sprintf_alloc.h" +#include "file_util.h" +#include "str_util.h" +#include "xsystem.h" +#include "user.h" + +int satisfy_dependencies_for(ipkg_conf_t *conf, pkg_t *pkg); +static int verify_pkg_installable(ipkg_conf_t *conf, pkg_t *pkg); +static int unpack_pkg_control_files(ipkg_conf_t *conf, pkg_t *pkg); + +static int prerm_upgrade_old_pkg(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int prerm_upgrade_old_pkg_unwind(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int prerm_deconfigure_conflictors(ipkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *conflictors); +static int prerm_deconfigure_conflictors_unwind(ipkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *conflictors); +static int preinst_configure(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int preinst_configure_unwind(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int check_data_file_clashes(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int check_data_file_clashes_change(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int check_data_file_clashes_unwind(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int backup_modified_conffiles(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int backup_modified_conffiles_unwind(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int postrm_upgrade_old_pkg(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int postrm_upgrade_old_pkg_unwind(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); + +static int remove_obsolesced_files(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int install_maintainer_scripts(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg); +static int remove_disappeared(ipkg_conf_t *conf, pkg_t *pkg); +static int install_data_files(ipkg_conf_t *conf, pkg_t *pkg); +static int resolve_conffiles(ipkg_conf_t *conf, pkg_t *pkg); + +static int cleanup_temporary_files(ipkg_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(ipkg_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 ipkg_install_from_file(ipkg_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) { + ipkg_message(conf, IPKG_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 ipkg 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) { + ipkg_message(conf, IPKG_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); + } + } + + ipkg_message(conf, IPKG_DEBUG2,"Function: %s calling ipkg_install_pkg \n",__FUNCTION__); + return ipkg_install_pkg(conf, pkg,0); +} + +ipkg_error_t ipkg_install_by_name(ipkg_conf_t *conf, const char *pkg_name) +{ + int cmp; + pkg_t *old, *new; + char *old_version, *new_version; + + ipkg_message(conf, IPKG_DEBUG2, " Getting old from pkg_hash_fetch \n" ); + old = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg_name); + if ( old ) + ipkg_message(conf, IPKG_DEBUG2, " Old versions from pkg_hash_fetch %s \n", old->version ); + + ipkg_message(conf, IPKG_DEBUG2, " Getting new from pkg_hash_fetch \n" ); + new = pkg_hash_fetch_best_installation_candidate_by_name(conf, pkg_name); + if ( new ) + ipkg_message(conf, IPKG_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. +*/ + ipkg_message(conf, IPKG_DEBUG2, " Versions from pkg_hash_fetch in %s ", __FUNCTION__ ); + + if ( old ) + ipkg_message(conf, IPKG_DEBUG2, " old %s ", old->version ); + if ( new ) + ipkg_message(conf, IPKG_DEBUG2, " new %s ", new->version ); + ipkg_message(conf, IPKG_DEBUG2, " \n"); + + if (new == NULL) { + return IPKG_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 */ + ipkg_message(conf, IPKG_DEBUG, " Forcing downgrade \n"); + cmp = -1 ; /* then we force ipkg 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 */ + } + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_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 ipkg_install_by_name is really + supposed to be an ipkg_error_t, but ipkg_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 libipkg. */ + + ipkg_message(conf, IPKG_DEBUG2,"Function: %s calling ipkg_install_pkg \n",__FUNCTION__); + return ipkg_install_pkg(conf, new,0); +} + +ipkg_error_t ipkg_install_multi_by_name(ipkg_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; + ipkg_error_t err; + abstract_pkg_t *ppkg ; + + if (providers == NULL) + return IPKG_PKG_HAS_NO_CANDIDATE; + + for (i = 0; i < providers->len; i++) { + ppkg = abstract_pkg_vec_get(providers, i); + ipkg_message(conf, IPKG_DEBUG2,"Function: %s calling ipkg_install_by_name %d \n",__FUNCTION__, i); + err = ipkg_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(ipkg_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) { + ipkg_message(conf, IPKG_ERROR, + "%s: Cannot satisfy the following dependencies for %s:\n\t", + conf->force_depends ? "Warning" : "ERROR", pkg->name); + while (*unresolved) { + ipkg_message(conf, IPKG_ERROR, " %s", *unresolved); + unresolved++; + } + ipkg_message(conf, IPKG_ERROR, "\n"); + if (! conf->force_depends) { + ipkg_message(conf, IPKG_INFO, + "This could mean that your package list is out of date or that the packages\n" + "mentioned above do not yet exist (try 'ipkg update'). To proceed in spite\n" + "of this problem try again with the '-force-depends' option.\n"); + pkg_vec_free(depends); + return IPKG_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(ipkg_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 IPKG_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 */ + ipkg_message(conf, IPKG_DEBUG, " Forcing downgrade "); + cmp = -1 ; /* then we force ipkg 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 */ + } + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_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(ipkg_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) { + ipkg_message(conf, IPKG_ERROR, + "%s: Cannot satisfy the following dependencies for %s:\n\t", + conf->force_depends ? "Warning" : "ERROR", pkg->name); + while (*unresolved) { + ipkg_message(conf, IPKG_ERROR, " %s", *unresolved); + unresolved++; + } + ipkg_message(conf, IPKG_ERROR, "\n"); + if (! conf->force_depends) { + ipkg_message(conf, IPKG_INFO, + "This could mean that your package list is out of date or that the packages\n" + "mentioned above do not yet exist (try 'ipkg update'). To proceed in spite\n" + "of this problem try again with the '-force-depends' option.\n"); + pkg_vec_free(depends); + return IPKG_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)) { + ipkg_message(conf, IPKG_DEBUG2,"Function: %s calling ipkg_install_pkg \n",__FUNCTION__); + err = ipkg_install_pkg(conf, dep,0); + 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 ipkg_satisfy_all_dependences(ipkg_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(ipkg_conf_t *conf, pkg_t *pkg) +{ + int i; + pkg_vec_t *conflicts = NULL; + int level; + const char *prefix; + if (conf->force_depends) { + level = IPKG_NOTICE; + prefix = "Warning"; + } else { + level = IPKG_ERROR; + prefix = "ERROR"; + } + + if (!conf->force_depends) + conflicts = (pkg_vec_t *)pkg_hash_fetch_conflicts(&conf->pkg_hash, pkg); + + if (conflicts) { + ipkg_message(conf, level, + "%s: The following packages conflict with %s:\n\t", prefix, pkg->name); + i = 0; + while (i < conflicts->len) + ipkg_message(conf, level, " %s", conflicts->pkgs[i++]->name); + ipkg_message(conf, level, "\n"); + pkg_vec_free(conflicts); + return IPKG_PKG_DEPS_UNSATISFIED; + } + return 0; +} + +static int update_file_ownership(ipkg_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) + ipkg_message(conf, IPKG_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(ipkg_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) { + ipkg_message(conf, IPKG_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(ipkg_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) { + ipkg_message(conf, IPKG_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(ipkg_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(ipkg_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 = ipkg_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(ipkg_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) { + ipkg_message(conf, IPKG_DEBUG2,"Function: %s calling ipkg_install_pkg \n",__FUNCTION__); + err = ipkg_install_pkg(conf, replacee,0); + if (err) + return err; + } + } + return 0; +} + +int caught_sigint = 0; +static void ipkg_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 ipkg_install_check_downgrade(ipkg_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 ipkg 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) { + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_NOTICE, + "Reinstalling %s (%s) on %s...\n", + pkg->name, new_version, old_pkg->dest->name); + pkg->dest = old_pkg->dest; + rc = 0; + } else { + ipkg_message(conf, IPKG_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); + + ipkg_message(conf, IPKG_NOTICE, + "%s%s (%s) to %s...\n", message_out, + pkg->name, version, pkg->dest->name); + free(version); + return 0; + } +} + +/* and now the meat... */ +int ipkg_install_pkg(ipkg_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; + + + if ( from_upgrade ) + message = 1; /* Coming from an upgrade, and should change the output message */ + + if (!pkg) { + ipkg_message(conf, IPKG_ERROR, + "INTERNAL ERROR: null pkg passed to ipkg_install_pkg\n"); + return -EINVAL; + } + + ipkg_message(conf, IPKG_DEBUG2, "Function: %s calling pkg_arch_supported %s \n", __FUNCTION__, __FUNCTION__); + + if (!pkg_arch_supported(conf, pkg)) { + ipkg_message(conf, IPKG_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; } + + ipkg_message(conf, IPKG_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 = ipkg_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 = ipkg_download_pkg(conf, pkg, conf->tmp_dir); + if (err) { + ipkg_message(conf, IPKG_ERROR, + "Failed to download %s. Perhaps you need to run 'ipkg 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)) + { + ipkg_message(conf, IPKG_ERROR, + "Package %s md5sum mismatch. Either the ipkg or the package index are corrupt. Try 'ipkg 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); + + /* this next section we do with SIGINT blocked to prevent inconsistency between ipkg 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, ipkg_install_pkg_sigint_handler); + } else { + sigemptyset(&newset); + sigaddset(&newset, SIGINT); + sigprocmask(SIG_BLOCK, &newset, &oldset); + } + + ipkg_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) { + ipkg_message(conf, IPKG_INFO, + " not removing obsolesced files because package marked noprune\n"); + } else { + ipkg_message(conf, IPKG_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 */ + + } + + + ipkg_message(conf, IPKG_INFO, + " installing maintainer scripts\n"); + install_maintainer_scripts(conf, pkg, old_pkg); + + /* the following just returns 0 */ + remove_disappeared(conf, pkg); + + ipkg_message(conf, IPKG_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); + + ipkg_message(conf, IPKG_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; + ipkg_message(conf, IPKG_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); + + ipkg_message(conf, IPKG_INFO, + " cleanup temp files\n"); + cleanup_temporary_files(conf, pkg); + + ab_pkg = pkg->parent; + if (ab_pkg) + ab_pkg->state_status = pkg->state_status; + + ipkg_message(conf, IPKG_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); + + ipkg_message(conf, IPKG_INFO, + " cleanup temp files\n"); + cleanup_temporary_files(conf, pkg); + + ipkg_message(conf, IPKG_INFO, + "Failed.\n"); + if (use_signal) + signal(SIGINT, old_handler); + else + sigprocmask(SIG_UNBLOCK, &newset, &oldset); + + return err; + } +} + +static int prerm_upgrade_old_pkg(ipkg_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(ipkg_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(ipkg_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(ipkg_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(ipkg_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) { + ipkg_message(conf, IPKG_ERROR, + "Aborting installation of %s\n", pkg->name); + return 1; + } + + free(preinst_args); + + return 0; +} + +static int preinst_configure_unwind(ipkg_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(ipkg_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(ipkg_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(ipkg_conf_t *conf, pkg_t *pkg, pkg_t *old_pkg) +{ + /* DPKG_INCOMPATIBILITY: + ipkg 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, ipkg 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) { + ipkg_message(conf, IPKG_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){ + ipkg_message(conf, IPKG_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) { + ipkg_message(conf, IPKG_INFO, "Pre-exiting file %s is obsolete. obs_pkg=%s\n", filename, obs->name); + continue; + } + + /* We have found a clash. */ + ipkg_message(conf, IPKG_ERROR, + "Package %s wants to install file %s\n" + "\tBut that file is already provided by package ", + pkg->name, filename); + if (owner) { + ipkg_message(conf, IPKG_ERROR, + "%s\n", owner->name); + } else { + ipkg_message(conf, IPKG_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(ipkg_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. */ + ipkg_message(conf, IPKG_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(ipkg_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(ipkg_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(ipkg_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(ipkg_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 */ + ipkg_message(conf, IPKG_INFO, + " removing obsolete file %s\n", old); + if (!conf->noaction) { + err = unlink(old); + if (err) { + ipkg_message(conf, IPKG_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(ipkg_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) { + ipkg_message(conf, IPKG_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++) { + ipkg_message(conf, IPKG_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(ipkg_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(ipkg_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(ipkg_conf_t *conf, pkg_t *pkg) +{ + int err; + + /* ipkg 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. */ + + ipkg_message(conf, IPKG_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) ; + + ipkg_message(conf, IPKG_DEBUG, " Calling pkg_write_filelist from %s\n", __FUNCTION__); + err = pkg_write_filelist(conf, pkg); + if (err) + return err; + + /* XXX: FEATURE: ipkg 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 ipkg to install + a clashing package with a user force. */ + + return 0; +} + +static int resolve_conffiles(ipkg_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(ipkg_conf_t *conf, pkg_t *pkg) +{ + DIR *tmp_dir; + struct dirent *dirent; + char *tmp_file; + +#ifdef IPKG_DEBUG_NO_TMP_CLEANUP +#error + ipkg_message(conf, IPKG_DEBUG, + "%s: Not cleaning up %s since ipkg compiled with IPKG_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; + } + } + + ipkg_message(conf, IPKG_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, IPKG_BACKUP_SUFFIX); + + return backup; +} + +int backup_make_backup(ipkg_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) { + ipkg_message(conf, IPKG_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_IPKG_PROCESS_ACTIONS + +int ipkg_remove_packages(ipkg_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 = ipkg_remove_pkg(conf, pkg,0); + if (err) return err; + } + return 0; +} + +int ipkg_process_actions_sanity_check(ipkg_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 ipkg_process_actions_unpack_packages(ipkg_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 ipkg_process_actions_unpack_packages(ipkg_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 = ipkg_download_pkg(conf, pkg, conf->tmp_dir); + if (err) { + ipkg_message(conf, IPKG_ERROR, + "Failed to download %s. Perhaps you need to run 'ipkg 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 ipkg_process_actions_prerm(ipkg_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 ipkg_process_actions_install(ipkg_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) { + ipkg_message(conf, IPKG_INFO, + " not removing obsolesced files because package marked noprune\n"); + } else { + ipkg_message(conf, IPKG_INFO, + " removing obsolesced files\n"); + remove_obsolesced_files(conf, pkg, old_pkg); + } + } + + ipkg_message(conf, IPKG_INFO, + " installing maintainer scripts\n"); + install_maintainer_scripts(conf, pkg, old_pkg); + + /* the following just returns 0 */ + remove_disappeared(conf, pkg); + + ipkg_message(conf, IPKG_INFO, + " installing data files\n"); + install_data_files(conf, pkg); + + ipkg_message(conf, IPKG_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); + + ipkg_message(conf, IPKG_INFO, + " cleanup temp files\n"); + cleanup_temporary_files(conf, pkg); + + if (pkg->parent) + pkg->parent->state_status = pkg->state_status; + } + return 0; +} + +int ipkg_process_actions_unwind_prerm(ipkg_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 ipkg_process_actions(ipkg_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 = ipkg_remove_packages(conf, pkgs_to_remove); + if (err) return err; + + err = ipkg_process_actions_sanity_check(conf, pkgs_superseded, pkgs_to_install); + if (err) return err; + + err = ipkg_process_actions_remove_replacees(conf, pkgs_to_install); + if (err) goto UNWIND; + + /* @@@@ look at ipkg_install_pkg for handling replacements */ + err = ipkg_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 = ipkg_process_actions_check_data_file_clashes(conf, pkgs_superseded, pkgs_to_install); + if (err) goto UNWIND; + + /* this was before checking data file clashes */ + err = ipkg_process_actions_prerm(conf, pkgs_superseded, pkgs_to_install); + if (err) goto UNWIND; + + /* point of no return: no unwinding after this */ + err = ipkg_process_actions_install(conf, pkgs_to_install); + if (err) return err; + + ipkg_message(conf, IPKG_INFO, "Done.\n"); + return 0; + + UNWIND: + ipkg_process_actions_unwind(conf, pkgs_to_install); + + ipkg_message(conf, IPKG_INFO, + " cleanup temp files\n"); + cleanup_temporary_files(conf, pkg); + + ipkg_message(conf, IPKG_INFO, + "Failed.\n"); + return err; +} + +#endif |