diff options
Diffstat (limited to 'src/libopkg/opkg_install.c')
| -rw-r--r-- | src/libopkg/opkg_install.c | 1528 |
1 files changed, 1528 insertions, 0 deletions
diff --git a/src/libopkg/opkg_install.c b/src/libopkg/opkg_install.c new file mode 100644 index 0000000..3925f58 --- /dev/null +++ b/src/libopkg/opkg_install.c @@ -0,0 +1,1528 @@ +/* opkg_install.c - the opkg 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 "config.h" + +#include <stdio.h> +#include <time.h> +#include <signal.h> +#include <unistd.h> +#include <sys/stat.h> + +#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_cmd.h" +#include "opkg_defines.h" + +#include "sprintf_alloc.h" +#include "file_util.h" +#include "xsystem.h" +#include "libbb/libbb.h" + +static int +satisfy_dependencies_for(pkg_t *pkg) +{ + int i, err; + pkg_vec_t *depends = pkg_vec_alloc(); + pkg_t *dep; + char **tmp, **unresolved = NULL; + int ndepends; + + ndepends = pkg_hash_fetch_unsatisfied_dependencies(pkg, depends, + &unresolved); + + if (unresolved) { + opkg_msg(ERROR, "Cannot satisfy the following dependencies for %s:\n", + pkg->name); + tmp = unresolved; + while (*unresolved) { + opkg_message(ERROR, "\t%s", *unresolved); + free(*unresolved); + unresolved++; + } + free(tmp); + opkg_message(ERROR, "\n"); + if (! conf->force_depends) { + opkg_msg(INFO, + "This could mean that your package list is out of date or that the packages\n" + "mentioned above do not yet exist (try 'opkg update').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 -1; + } + } + + if (ndepends <= 0) { + pkg_vec_free(depends); + 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_msg(DEBUG2,"Calling opkg_install_pkg.\n"); + err = opkg_install_pkg(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; +} + +static int +check_conflicts_for(pkg_t *pkg) +{ + int i; + pkg_vec_t *conflicts = NULL; + message_level_t level; + + if (conf->force_depends) { + level = NOTICE; + } else { + level = ERROR; + } + + if (!conf->force_depends) + conflicts = pkg_hash_fetch_conflicts(pkg); + + if (conflicts) { + opkg_msg(level, "The following packages conflict with %s:\n", + pkg->name); + i = 0; + while (i < conflicts->len) + opkg_msg(level, "\t%s", conflicts->pkgs[i++]->name); + opkg_message(level, "\n"); + pkg_vec_free(conflicts); + return -1; + } + return 0; +} + +static int +update_file_ownership(pkg_t *new_pkg, pkg_t *old_pkg) +{ + str_list_t *new_list, *old_list; + str_list_elt_t *iter, *niter; + + new_list = pkg_get_installed_files(new_pkg); + if (new_list == NULL) + return -1; + + for (iter = str_list_first(new_list), niter = str_list_next(new_list, iter); + iter; + iter = niter, niter = str_list_next(new_list, niter)) { + char *new_file = (char *)iter->data; + pkg_t *owner = file_hash_get_file_owner(new_file); + pkg_t *obs = hash_table_get(&conf->obs_file_hash, new_file); + + opkg_msg(DEBUG2, "%s: new_pkg=%s wants file %s, from owner=%s\n", + __func__, new_pkg->name, new_file, owner?owner->name:"<NULL>"); + + if (!owner || (owner == old_pkg) || obs) + file_hash_set_file_owner(new_file, new_pkg); + } + + if (old_pkg) { + old_list = pkg_get_installed_files(old_pkg); + if (old_list == NULL) { + pkg_free_installed_files(new_pkg); + return -1; + } + + for (iter = str_list_first(old_list), niter = str_list_next(old_list, iter); + iter; + iter = niter, niter = str_list_next(old_list, niter)) { + char *old_file = (char *)iter->data; + pkg_t *owner = file_hash_get_file_owner(old_file); + if (!owner || (owner == old_pkg)) { + /* obsolete */ + hash_table_insert(&conf->obs_file_hash, old_file, old_pkg); + } + } + pkg_free_installed_files(old_pkg); + } + pkg_free_installed_files(new_pkg); + return 0; +} + +static int +verify_pkg_installable(pkg_t *pkg) +{ + unsigned long kbs_available, pkg_size_kbs; + char *root_dir = NULL; + struct stat s; + + if (conf->force_space || pkg->installed_size == 0) + return 0; + + if (pkg->dest) + { + if (!strcmp(pkg->dest->name, "root") && conf->overlay_root + && !stat(conf->overlay_root, &s) && (s.st_mode & S_IFDIR)) + root_dir = conf->overlay_root; + else + root_dir = pkg->dest->root_dir; + } + + if (!root_dir) + root_dir = conf->default_dest->root_dir; + + kbs_available = get_available_kbytes(root_dir); + + pkg_size_kbs = (pkg->installed_size + 1023)/1024; + + if (pkg_size_kbs >= kbs_available) { + opkg_msg(ERROR, "Only have %ldkb available on filesystem %s, " + "pkg %s needs %ld\n", + kbs_available, root_dir, pkg->name, pkg_size_kbs); + return -1; + } + + return 0; +} + +static int +unpack_pkg_control_files(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_perror(ERROR, "Failed to create temporary directory '%s'", + pkg->tmp_unpack_dir); + return -1; + } + + 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 (!nv_pair_list_empty(&pkg->conffiles)) { + 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) { + opkg_perror(ERROR, "Failed to open %s", conffiles_file_name); + free(conffiles_file_name); + return -1; + } + 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; + } + 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; +} + +/* + * Remove packages which were auto_installed due to a dependency by old_pkg, + * which are no longer a dependency in the new (upgraded) pkg. + */ +static int +pkg_remove_orphan_dependent(pkg_t *pkg, pkg_t *old_pkg) +{ + int i, j, k, l, found,r, err = 0; + int n_deps; + pkg_t *p; + struct compound_depend *cd0, *cd1; + abstract_pkg_t **dependents; + + int count0 = old_pkg->pre_depends_count + + old_pkg->depends_count + + old_pkg->recommends_count + + old_pkg->suggests_count; + int count1 = pkg->pre_depends_count + + pkg->depends_count + + pkg->recommends_count + + pkg->suggests_count; + + for (i=0; i<count0; i++) { + cd0 = &old_pkg->depends[i]; + if (cd0->type != DEPEND) + continue; + for (j=0; j<cd0->possibility_count; j++) { + + found = 0; + + for (k=0; k<count1; k++) { + cd1 = &pkg->depends[k]; + if (cd1->type != DEPEND) + continue; + for (l=0; l<cd1->possibility_count; l++) { + if (cd0->possibilities[j] + == cd1->possibilities[l]) { + found = 1; + break; + } + } + if (found) + break; + } + + if (found) + continue; + + /* + * old_pkg has a dependency that pkg does not. + */ + p = pkg_hash_fetch_installed_by_name( + cd0->possibilities[j]->pkg->name); + + if (!p) + continue; + + if (!p->auto_installed) + continue; + + n_deps = pkg_has_installed_dependents(p, &dependents); + n_deps--; /* don't count old_pkg */ + + if (n_deps == 0) { + opkg_msg(NOTICE, "%s was autoinstalled and is " + "now orphaned, removing.\n", + p->name); + + /* p has one installed dependency (old_pkg), + * which we need to ignore during removal. */ + p->state_flag |= SF_REPLACE; + + r = opkg_remove_pkg(p, 0); + if (!err) + err = r; + } else + opkg_msg(INFO, "%s was autoinstalled and is " + "still required by %d " + "installed packages.\n", + p->name, n_deps); + + } + } + + return err; +} + +/* returns number of installed replacees */ +static int +pkg_get_installed_replacees(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; +} + +static int +pkg_remove_installed_replacees(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(replacee, 0); + if (err) + return err; + } + return 0; +} + +/* to unwind the removal: make sure they are installed */ +static int +pkg_remove_installed_replacees_unwind(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_msg(DEBUG2, "Calling opkg_install_pkg.\n"); + err = opkg_install_pkg(replacee, 0); + if (err) + return err; + } + } + return 0; +} + +/* 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(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) { + if(!conf->download_only) + opkg_msg(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) { + if(!conf->download_only) + opkg_msg(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->download_only) + opkg_msg(NOTICE, "%s (%s) already install on %s.\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); + + if(!conf->download_only) + opkg_msg(NOTICE, "%s%s (%s) to %s...\n", message_out, + pkg->name, version, pkg->dest->name); + free(version); + } + return 0; +} + + +static int +prerm_upgrade_old_pkg(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(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(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(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(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 = xstrdup("install"); + } + + err = pkg_run_script(pkg, "preinst", preinst_args); + if (err) { + opkg_msg(ERROR, "Aborting installation of %s.\n", pkg->name); + return -1; + } + + free(preinst_args); + + return 0; +} + +static int +preinst_configure_unwind(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 char * +backup_filename_alloc(const char *file_name) +{ + char *backup; + + sprintf_alloc(&backup, "%s%s", file_name, OPKG_BACKUP_SUFFIX); + + return backup; +} + + +static int +backup_make_backup(const char *file_name) +{ + int err; + char *backup; + + backup = backup_filename_alloc(file_name); + err = file_copy(file_name, backup); + if (err) { + opkg_msg(ERROR, "Failed to copy %s to %s\n", + 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; +} + +static int +backup_modified_conffiles(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 = nv_pair_list_first(&old_pkg->conffiles); iter; iter = nv_pair_list_next(&old_pkg->conffiles, iter)) { + char *cf_name; + + cf = iter->data; + cf_name = root_filename_alloc(cf->name); + + /* Don't worry if the conffile is just plain gone */ + if (file_exists(cf_name) && conffile_has_been_modified(cf)) { + err = backup_make_backup(cf_name); + if (err) { + return err; + } + } + free(cf_name); + } + } + + /* Backup all conffiles that were not conffiles in old_pkg */ + for (iter = nv_pair_list_first(&pkg->conffiles); iter; iter = nv_pair_list_next(&pkg->conffiles, iter)) { + char *cf_name; + cf = (conffile_t *)iter->data; + cf_name = root_filename_alloc(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(cf_name); + if (err) { + return err; + } + } + free(cf_name); + } + + return 0; +} + +static int +backup_modified_conffiles_unwind(pkg_t *pkg, pkg_t *old_pkg) +{ + conffile_list_elt_t *iter; + + if (old_pkg) { + for (iter = nv_pair_list_first(&old_pkg->conffiles); iter; iter = nv_pair_list_next(&old_pkg->conffiles, iter)) { + backup_remove(((nv_pair_t *)iter->data)->name); + } + } + + for (iter = nv_pair_list_first(&pkg->conffiles); iter; iter = nv_pair_list_next(&pkg->conffiles, iter)) { + backup_remove(((nv_pair_t *)iter->data)->name); + } + + return 0; +} + + +static int +check_data_file_clashes(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, *niter; + char *filename; + int clashes = 0; + + files_list = pkg_get_installed_files(pkg); + if (files_list == NULL) + return -1; + + for (iter = str_list_first(files_list), niter = str_list_next(files_list, iter); + iter; + iter = niter, niter = str_list_next(files_list, iter)) { + filename = (char *) iter->data; + if (file_exists(filename) && (! file_is_dir(filename))) { + pkg_t *owner; + pkg_t *obs; + + if (backup_exists_for(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(filename, pkg); + continue; + } + + owner = file_hash_get_file_owner(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_msg(DEBUG2, "Checking 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_msg(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_msg(INFO, "Pre-exiting file %s is obsolete." + " obs_pkg=%s\n", + filename, obs->name); + continue; + } + + /* We have found a clash. */ + opkg_msg(ERROR, "Package %s wants to install file %s\n" + "\tBut that file is already provided by package ", + pkg->name, filename); + if (owner) { + opkg_message(ERROR, "%s\n", owner->name); + } else { + opkg_message(ERROR, "<no package>\n" + "Please move this file out of the way and try again.\n"); + } + clashes++; + } + } + pkg_free_installed_files(pkg); + + return clashes; +} + +/* + * XXX: This function sucks, as does the below comment. + */ +static int +check_data_file_clashes_change(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, *niter; + + char *root_filename = NULL; + + files_list = pkg_get_installed_files(pkg); + if (files_list == NULL) + return -1; + + for (iter = str_list_first(files_list), niter = str_list_next(files_list, iter); + iter; + iter = niter, niter = str_list_next(files_list, niter)) { + char *filename = (char *) iter->data; + if (root_filename) { + free(root_filename); + root_filename = NULL; + } + root_filename = root_filename_alloc(filename); + if (file_exists(root_filename) && (! file_is_dir(root_filename))) { + pkg_t *owner; + + owner = file_hash_get_file_owner(filename); + + if (conf->force_overwrite) { + /* but we need to change who owns this file */ + file_hash_set_file_owner(filename, pkg); + continue; + } + + + /* 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_msg(INFO, "Replacing pre-existing file %s " + "owned by package %s\n", + filename, owner->name); + file_hash_set_file_owner(filename, pkg); + continue; + } + } + + } + } + if (root_filename) { + free(root_filename); + root_filename = NULL; + } + pkg_free_installed_files(pkg); + + return 0; +} + +static int +check_data_file_clashes_unwind(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(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(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(pkg_t *pkg, pkg_t *old_pkg) +{ + int err = 0; + str_list_t *old_files; + str_list_elt_t *of; + str_list_t *new_files; + str_list_elt_t *nf; + hash_table_t new_files_table; + + old_files = pkg_get_installed_files(old_pkg); + if (old_files == NULL) + return -1; + + new_files = pkg_get_installed_files(pkg); + if (new_files == NULL) { + pkg_free_installed_files(old_pkg); + return -1; + } + + new_files_table.entries = NULL; + hash_table_init("new_files" , &new_files_table, 20); + for (nf = str_list_first(new_files); nf; nf = str_list_next(new_files, nf)) { + if (nf && nf->data) + hash_table_insert(&new_files_table, nf->data, nf->data); + } + + for (of = str_list_first(old_files); of; of = str_list_next(old_files, of)) { + pkg_t *owner; + char *old, *new; + old = (char *)of->data; + new = (char *) hash_table_get (&new_files_table, old); + if (new) + continue; + + if (file_is_dir(old)) { + continue; + } + owner = file_hash_get_file_owner(old); + if (owner != old_pkg) { + /* in case obsolete file no longer belongs to old_pkg */ + continue; + } + + /* old file is obsolete */ + opkg_msg(NOTICE, "Removing obsolete file %s.\n", old); + if (!conf->noaction) { + err = unlink(old); + if (err) { + opkg_perror(ERROR, "unlinking %s failed", old); + } + } + } + + hash_table_deinit(&new_files_table); + pkg_free_installed_files(old_pkg); + pkg_free_installed_files(pkg); + + return err; +} + +static int +install_maintainer_scripts(pkg_t *pkg, pkg_t *old_pkg) +{ + int ret; + char *prefix; + + 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(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(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_msg(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; + } + + /* The "Essential" control field may only be present in the control + * file and not in the Packages list. Ensure we capture it regardless. + * + * XXX: This should be fixed outside of opkg, in the Package list. + */ + set_flags_from_control(pkg) ; + + opkg_msg(DEBUG, "Calling pkg_write_filelist.\n"); + err = pkg_write_filelist(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(pkg_t *pkg) +{ + conffile_list_elt_t *iter; + conffile_t *cf; + char *cf_backup; + char *md5sum; + + if (conf->noaction) return 0; + + for (iter = nv_pair_list_first(&pkg->conffiles); iter; iter = nv_pair_list_next(&pkg->conffiles, iter)) { + char *root_filename; + cf = (conffile_t *)iter->data; + root_filename = root_filename_alloc(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 (md5sum && cf->value && strcmp(cf->value,md5sum) != 0 ) { + if (conf->force_maintainer) { + opkg_msg(NOTICE, "Conffile %s using maintainer's setting.\n", + cf_backup); + } else { + char *new_conffile; + sprintf_alloc(&new_conffile, "%s-opkg", root_filename); + opkg_msg(ERROR, "Existing conffile %s " + "is different from the conffile in the new package." + " The new conffile will be placed at %s.\n", + root_filename, new_conffile); + rename(root_filename, new_conffile); + rename(cf_backup, root_filename); + free(new_conffile); + } + } + unlink(cf_backup); + if (md5sum) + free(md5sum); + } + + free(cf_backup); + free(root_filename); + } + + return 0; +} + + +int +opkg_install_by_name(const char *pkg_name) +{ + int cmp; + pkg_t *old, *new; + char *old_version, *new_version; + + old = pkg_hash_fetch_installed_by_name(pkg_name); + if (old) + opkg_msg(DEBUG2, "Old versions from pkg_hash_fetch %s.\n", + old->version); + + new = pkg_hash_fetch_best_installation_candidate_by_name(pkg_name); + if (new == NULL) { + opkg_msg(NOTICE, "Unknown package '%s'.\n", pkg_name); + return -1; + } + + opkg_msg(DEBUG2, "Versions from pkg_hash_fetch:"); + if ( old ) + opkg_message(DEBUG2, " old %s ", old->version); + opkg_message(DEBUG2, " new %s\n", new->version); + + 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_msg(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_msg(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) { + opkg_msg(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_msg(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; + } + free(old_version); + free(new_version); + } + + opkg_msg(DEBUG2,"Calling opkg_install_pkg.\n"); + return opkg_install_pkg(new, 0); +} + +/** + * @brief Really install a pkg_t + */ +int +opkg_install_pkg(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; +#ifdef HAVE_SHA256 + char* file_sha256; +#endif + sigset_t newset, oldset; + + if ( from_upgrade ) + message = 1; /* Coming from an upgrade, and should change the output message */ + + opkg_msg(DEBUG2, "Calling pkg_arch_supported.\n"); + + if (!pkg_arch_supported(pkg)) { + opkg_msg(ERROR, "INTERNAL ERROR: architecture %s for pkg %s is unsupported.\n", + pkg->architecture, pkg->name); + return -1; + } + if (pkg->state_status == SS_INSTALLED && conf->nodeps == 0) { + err = satisfy_dependencies_for(pkg); + if (err) + return -1; + + opkg_msg(NOTICE, "Package %s is already installed on %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(pkg->name); + + err = opkg_install_check_downgrade(pkg, old_pkg, message); + if (err) + return -1; + + pkg->state_want = SW_INSTALL; + if (old_pkg){ + old_pkg->state_want = SW_DEINSTALL; /* needed for check_data_file_clashes of dependencies */ + } + + err = check_conflicts_for(pkg); + if (err) + return -1; + + /* 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) + return 0; + + err = verify_pkg_installable(pkg); + if (err) + return -1; + + if (pkg->local_filename == NULL) { + if(!conf->cache && conf->download_only){ + char cwd[4096]; + if(getcwd(cwd, sizeof(cwd)) != NULL) + err = opkg_download_pkg(pkg, cwd); + else + return -1; + } else { + err = opkg_download_pkg(pkg, conf->tmp_dir); + } + if (err) { + opkg_msg(ERROR, "Failed to download %s. " + "Perhaps you need to run 'opkg update'?\n", + pkg->name); + return -1; + } + } + + /* check that the repository is valid */ + #if defined(HAVE_GPGME) || defined(HAVE_OPENSSL) + char *list_file_name, *sig_file_name, *lists_dir; + + /* check to ensure the package has come from a repository */ + if (conf->check_signature && pkg->src) + { + sprintf_alloc (&lists_dir, "%s", + (conf->restrict_to_default_dest) + ? conf->default_dest->lists_dir + : conf->lists_dir); + sprintf_alloc (&list_file_name, "%s/%s", lists_dir, pkg->src->name); + sprintf_alloc (&sig_file_name, "%s/%s.sig", lists_dir, pkg->src->name); + + if (file_exists (sig_file_name)) + { + if (opkg_verify_file (list_file_name, sig_file_name)){ + opkg_msg(ERROR, "Failed to verify the signature of %s.\n", + list_file_name); + return -1; + } + }else{ + opkg_msg(ERROR, "Signature file is missing for %s. " + "Perhaps you need to run 'opkg update'?\n", + pkg->name); + return -1; + } + + free (lists_dir); + free (list_file_name); + free (sig_file_name); + } + #endif + + /* Check for md5 values */ + if (pkg->md5sum) + { + file_md5 = file_md5sum_alloc(pkg->local_filename); + if (file_md5 && strcmp(file_md5, pkg->md5sum)) + { + opkg_msg(ERROR, "Package %s md5sum mismatch. " + "Either the opkg or the package index are corrupt. " + "Try 'opkg update'.\n", + pkg->name); + free(file_md5); + return -1; + } + if (file_md5) + free(file_md5); + } + +#ifdef HAVE_SHA256 + /* Check for sha256 value */ + if(pkg->sha256sum) + { + file_sha256 = file_sha256sum_alloc(pkg->local_filename); + if (file_sha256 && strcmp(file_sha256, pkg->sha256sum)) + { + opkg_msg(ERROR, "Package %s sha256sum mismatch. " + "Either the opkg or the package index are corrupt. " + "Try 'opkg update'.\n", + pkg->name); + free(file_sha256); + return -1; + } + if (file_sha256) + free(file_sha256); + } +#endif + if(conf->download_only) { + if (conf->nodeps == 0) { + err = satisfy_dependencies_for(pkg); + if (err) + return -1; + } + return 0; + } + + if (pkg->tmp_unpack_dir == NULL) { + if (unpack_pkg_control_files(pkg) == -1) { + opkg_msg(ERROR, "Failed to unpack control files from %s.\n", + pkg->local_filename); + return -1; + } + } + + err = update_file_ownership(pkg, old_pkg); + if (err) + return -1; + + if (conf->nodeps == 0) { + err = satisfy_dependencies_for(pkg); + if (err) + return -1; + if (pkg->state_status == SS_UNPACKED) + /* Circular dependency has installed it for us. */ + return 0; + } + + replacees = pkg_vec_alloc(); + pkg_get_installed_replacees(pkg, replacees); + + /* this next section we do with SIGINT blocked to prevent inconsistency between opkg database and filesystem */ + + sigemptyset(&newset); + sigaddset(&newset, SIGINT); + sigprocmask(SIG_BLOCK, &newset, &oldset); + + opkg_state_changed++; + pkg->state_flag |= SF_FILELIST_CHANGED; + + if (old_pkg) + pkg_remove_orphan_dependent(pkg, old_pkg); + + /* XXX: BUG: we really should treat replacement more like an upgrade + * Instead, we're going to remove the replacees + */ + err = pkg_remove_installed_replacees(replacees); + if (err) + goto UNWIND_REMOVE_INSTALLED_REPLACEES; + + err = prerm_upgrade_old_pkg(pkg, old_pkg); + if (err) + goto UNWIND_PRERM_UPGRADE_OLD_PKG; + + err = prerm_deconfigure_conflictors(pkg, replacees); + if (err) + goto UNWIND_PRERM_DECONFIGURE_CONFLICTORS; + + err = preinst_configure(pkg, old_pkg); + if (err) + goto UNWIND_PREINST_CONFIGURE; + + err = backup_modified_conffiles(pkg, old_pkg); + if (err) + goto UNWIND_BACKUP_MODIFIED_CONFFILES; + + err = check_data_file_clashes(pkg, old_pkg); + if (err) + goto UNWIND_CHECK_DATA_FILE_CLASHES; + + err = postrm_upgrade_old_pkg(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) { + old_pkg->state_want = SW_DEINSTALL; + + if (old_pkg->state_flag & SF_NOPRUNE) { + opkg_msg(INFO, "Not removing obsolesced files because " + "package %s marked noprune.\n", + old_pkg->name); + } else { + opkg_msg(INFO, "Removing obsolesced files for %s\n", + old_pkg->name); + if (remove_obsolesced_files(pkg, old_pkg)) { + opkg_msg(ERROR, "Failed to determine " + "obsolete files from previously " + "installed %s\n", old_pkg->name); + } + } + + /* removing files from old package, to avoid ghost files */ + remove_data_files_and_list(old_pkg); + remove_maintainer_scripts(old_pkg); + + /* maintain the "Auto-Installed: yes" flag */ + pkg->auto_installed = old_pkg->auto_installed; + } + + + opkg_msg(INFO, "Installing maintainer scripts.\n"); + if (install_maintainer_scripts(pkg, old_pkg)) { + opkg_msg(ERROR, "Failed to extract maintainer scripts for %s." + " Package debris may remain!\n", + pkg->name); + goto pkg_is_hosed; + } + + /* the following just returns 0 */ + remove_disappeared(pkg); + + opkg_msg(INFO, "Installing data files for %s.\n", pkg->name); + + if (install_data_files(pkg)) { + opkg_msg(ERROR, "Failed to extract data files for %s. " + "Package debris may remain!\n", + pkg->name); + goto pkg_is_hosed; + } + + err = check_data_file_clashes_change(pkg, old_pkg); + if (err) { + opkg_msg(ERROR, "check_data_file_clashes_change() failed for " + "for files belonging to %s.\n", + pkg->name); + } + + opkg_msg(INFO, "Resolving conf files for %s\n", pkg->name); + resolve_conffiles(pkg); + + pkg->state_status = SS_UNPACKED; + old_state_flag = pkg->state_flag; + pkg->state_flag &= ~SF_PREFER; + opkg_msg(DEBUG, "pkg=%s old_state_flag=%x state_flag=%x\n", + pkg->name, old_state_flag, pkg->state_flag); + + if (old_pkg) + old_pkg->state_status = SS_NOT_INSTALLED; + + time(&pkg->installed_time); + + ab_pkg = pkg->parent; + if (ab_pkg) + ab_pkg->state_status = pkg->state_status; + + sigprocmask(SIG_UNBLOCK, &newset, &oldset); + pkg_vec_free (replacees); + return 0; + + + UNWIND_POSTRM_UPGRADE_OLD_PKG: + postrm_upgrade_old_pkg_unwind(pkg, old_pkg); + UNWIND_CHECK_DATA_FILE_CLASHES: + check_data_file_clashes_unwind(pkg, old_pkg); + UNWIND_BACKUP_MODIFIED_CONFFILES: + backup_modified_conffiles_unwind(pkg, old_pkg); + UNWIND_PREINST_CONFIGURE: + preinst_configure_unwind(pkg, old_pkg); + UNWIND_PRERM_DECONFIGURE_CONFLICTORS: + prerm_deconfigure_conflictors_unwind(pkg, replacees); + UNWIND_PRERM_UPGRADE_OLD_PKG: + prerm_upgrade_old_pkg_unwind(pkg, old_pkg); + UNWIND_REMOVE_INSTALLED_REPLACEES: + pkg_remove_installed_replacees_unwind(replacees); + +pkg_is_hosed: + sigprocmask(SIG_UNBLOCK, &newset, &oldset); + + pkg_vec_free (replacees); + return -1; +} |