/* * package.c * * Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org> * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> * Copyright (c) 2005, 2006 by Christian Hamar <krics@linuxforum.hu> * Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org> * * 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 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "config.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include <errno.h> #include <sys/types.h> #include <sys/stat.h> /* libalpm */ #include "package.h" #include "alpm_list.h" #include "log.h" #include "util.h" #include "db.h" #include "delta.h" #include "handle.h" #include "deps.h" /** \addtogroup alpm_packages Package Functions * @brief Functions to manipulate libalpm packages * @{ */ /** Free a package. * @param pkg package pointer to free * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_pkg_free(pmpkg_t *pkg) { ALPM_LOG_FUNC; ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); /* Only free packages loaded in user space */ if(pkg->origin == PKG_FROM_FILE) { _alpm_pkg_free(pkg); } return(0); } /** Check the integrity (with md5) of a package from the sync cache. * @param pkg package pointer * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_pkg_checkmd5sum(pmpkg_t *pkg) { char *fpath; int retval; ALPM_LOG_FUNC; ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); /* We only inspect packages from sync repositories */ ASSERT(pkg->origin == PKG_FROM_SYNCDB, RET_ERR(PM_ERR_PKG_INVALID, -1)); fpath = _alpm_filecache_find(alpm_pkg_get_filename(pkg)); retval = _alpm_test_md5sum(fpath, alpm_pkg_get_md5sum(pkg)); if(retval == 0) { return(0); } else if (retval == 1) { pm_errno = PM_ERR_PKG_INVALID; retval = -1; } return(retval); } /* Default package accessor functions. These will get overridden by any * backend logic that needs lazy access, such as the local database through * a lazy-load cache. However, the defaults will work just fine for fully- * populated package structures. */ static const char *_pkg_get_filename(pmpkg_t *pkg) { return pkg->filename; } static const char *_pkg_get_name(pmpkg_t *pkg) { return pkg->name; } static const char *_pkg_get_version(pmpkg_t *pkg) { return pkg->version; } static const char *_pkg_get_desc(pmpkg_t *pkg) { return pkg->desc; } static const char *_pkg_get_url(pmpkg_t *pkg) { return pkg->url; } static time_t _pkg_get_builddate(pmpkg_t *pkg) { return pkg->builddate; } static time_t _pkg_get_installdate(pmpkg_t *pkg) { return pkg->installdate; } static const char *_pkg_get_packager(pmpkg_t *pkg) { return pkg->packager; } static const char *_pkg_get_md5sum(pmpkg_t *pkg) { return pkg->md5sum; } static const char *_pkg_get_arch(pmpkg_t *pkg) { return pkg->arch; } static off_t _pkg_get_size(pmpkg_t *pkg) { return pkg->size; } static off_t _pkg_get_isize(pmpkg_t *pkg) { return pkg->isize; } static pmpkgreason_t _pkg_get_reason(pmpkg_t *pkg) { return pkg->reason; } static int _pkg_has_scriptlet(pmpkg_t *pkg) { return pkg->scriptlet; } static alpm_list_t *_pkg_get_licenses(pmpkg_t *pkg) { return pkg->licenses; } static alpm_list_t *_pkg_get_groups(pmpkg_t *pkg) { return pkg->groups; } static alpm_list_t *_pkg_get_depends(pmpkg_t *pkg) { return pkg->depends; } static alpm_list_t *_pkg_get_optdepends(pmpkg_t *pkg) { return pkg->optdepends; } static alpm_list_t *_pkg_get_conflicts(pmpkg_t *pkg) { return pkg->conflicts; } static alpm_list_t *_pkg_get_provides(pmpkg_t *pkg) { return pkg->provides; } static alpm_list_t *_pkg_get_replaces(pmpkg_t *pkg) { return pkg->replaces; } static alpm_list_t *_pkg_get_deltas(pmpkg_t *pkg) { return pkg->deltas; } static alpm_list_t *_pkg_get_files(pmpkg_t *pkg) { return pkg->files; } static alpm_list_t *_pkg_get_backup(pmpkg_t *pkg) { return pkg->backup; } /** The standard package operations struct. Get fields directly from the * struct itself with no abstraction layer or any type of lazy loading. */ struct pkg_operations default_pkg_ops = { .get_filename = _pkg_get_filename, .get_name = _pkg_get_name, .get_version = _pkg_get_version, .get_desc = _pkg_get_desc, .get_url = _pkg_get_url, .get_builddate = _pkg_get_builddate, .get_installdate = _pkg_get_installdate, .get_packager = _pkg_get_packager, .get_md5sum = _pkg_get_md5sum, .get_arch = _pkg_get_arch, .get_size = _pkg_get_size, .get_isize = _pkg_get_isize, .get_reason = _pkg_get_reason, .has_scriptlet = _pkg_has_scriptlet, .get_licenses = _pkg_get_licenses, .get_groups = _pkg_get_groups, .get_depends = _pkg_get_depends, .get_optdepends = _pkg_get_optdepends, .get_conflicts = _pkg_get_conflicts, .get_provides = _pkg_get_provides, .get_replaces = _pkg_get_replaces, .get_deltas = _pkg_get_deltas, .get_files = _pkg_get_files, .get_backup = _pkg_get_backup, }; /* Public functions for getting package information. These functions * delegate the hard work to the function callbacks attached to each * package, which depend on where the package was loaded from. */ const char SYMEXPORT *alpm_pkg_get_filename(pmpkg_t *pkg) { return pkg->ops->get_filename(pkg); } const char SYMEXPORT *alpm_pkg_get_name(pmpkg_t *pkg) { return pkg->ops->get_name(pkg); } const char SYMEXPORT *alpm_pkg_get_version(pmpkg_t *pkg) { return pkg->ops->get_version(pkg); } const char SYMEXPORT *alpm_pkg_get_desc(pmpkg_t *pkg) { return pkg->ops->get_desc(pkg); } const char SYMEXPORT *alpm_pkg_get_url(pmpkg_t *pkg) { return pkg->ops->get_url(pkg); } time_t SYMEXPORT alpm_pkg_get_builddate(pmpkg_t *pkg) { return pkg->ops->get_builddate(pkg); } time_t SYMEXPORT alpm_pkg_get_installdate(pmpkg_t *pkg) { return pkg->ops->get_installdate(pkg); } const char SYMEXPORT *alpm_pkg_get_packager(pmpkg_t *pkg) { return pkg->ops->get_packager(pkg); } const char SYMEXPORT *alpm_pkg_get_md5sum(pmpkg_t *pkg) { return pkg->ops->get_md5sum(pkg); } const char SYMEXPORT *alpm_pkg_get_arch(pmpkg_t *pkg) { return pkg->ops->get_arch(pkg); } off_t SYMEXPORT alpm_pkg_get_size(pmpkg_t *pkg) { return pkg->ops->get_size(pkg); } off_t SYMEXPORT alpm_pkg_get_isize(pmpkg_t *pkg) { return pkg->ops->get_isize(pkg); } pmpkgreason_t SYMEXPORT alpm_pkg_get_reason(pmpkg_t *pkg) { return pkg->ops->get_reason(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_licenses(pmpkg_t *pkg) { return pkg->ops->get_licenses(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_groups(pmpkg_t *pkg) { return pkg->ops->get_groups(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_depends(pmpkg_t *pkg) { return pkg->ops->get_depends(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_optdepends(pmpkg_t *pkg) { return pkg->ops->get_optdepends(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_conflicts(pmpkg_t *pkg) { return pkg->ops->get_conflicts(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_provides(pmpkg_t *pkg) { return pkg->ops->get_provides(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_replaces(pmpkg_t *pkg) { return pkg->ops->get_replaces(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_deltas(pmpkg_t *pkg) { return pkg->ops->get_deltas(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_files(pmpkg_t *pkg) { return pkg->ops->get_files(pkg); } alpm_list_t SYMEXPORT *alpm_pkg_get_backup(pmpkg_t *pkg) { return pkg->ops->get_backup(pkg); } pmdb_t SYMEXPORT *alpm_pkg_get_db(pmpkg_t *pkg) { /* Sanity checks */ ASSERT(pkg != NULL, return(NULL)); ASSERT(pkg->origin != PKG_FROM_FILE, return(NULL)); return(pkg->origin_data.db); } /** * Open a package changelog for reading. Similar to fopen in functionality, * except that the returned 'file stream' could really be from an archive * as well as from the database. * @param pkg the package to read the changelog of (either file or db) * @return a 'file stream' to the package changelog */ void SYMEXPORT *alpm_pkg_changelog_open(pmpkg_t *pkg) { return pkg->ops->changelog_open(pkg); } /** * Read data from an open changelog 'file stream'. Similar to fread in * functionality, this function takes a buffer and amount of data to read. If an * error occurs pm_errno will be set. * * @param ptr a buffer to fill with raw changelog data * @param size the size of the buffer * @param pkg the package that the changelog is being read from * @param fp a 'file stream' to the package changelog * @return the number of characters read, or 0 if there is no more data or an * error occurred. */ size_t SYMEXPORT alpm_pkg_changelog_read(void *ptr, size_t size, const pmpkg_t *pkg, const void *fp) { return pkg->ops->changelog_read(ptr, size, pkg, fp); } /* int SYMEXPORT alpm_pkg_changelog_feof(const pmpkg_t *pkg, void *fp) { return pkg->ops->changelog_feof(pkg, fp); } */ /** * Close a package changelog for reading. Similar to fclose in functionality, * except that the 'file stream' could really be from an archive as well as * from the database. * @param pkg the package that the changelog was read from * @param fp a 'file stream' to the package changelog * @return whether closing the package changelog stream was successful */ int SYMEXPORT alpm_pkg_changelog_close(const pmpkg_t *pkg, void *fp) { return pkg->ops->changelog_close(pkg, fp); } int SYMEXPORT alpm_pkg_has_scriptlet(pmpkg_t *pkg) { return pkg->ops->has_scriptlet(pkg); } static void find_requiredby(pmpkg_t *pkg, pmdb_t *db, alpm_list_t **reqs) { const alpm_list_t *i; for(i = _alpm_db_get_pkgcache(db); i; i = i->next) { pmpkg_t *cachepkg = i->data; alpm_list_t *i; for(i = alpm_pkg_get_depends(cachepkg); i; i = i->next) { if(_alpm_depcmp(pkg, i->data)) { const char *cachepkgname = cachepkg->name; if(alpm_list_find_str(*reqs, cachepkgname) == NULL) { *reqs = alpm_list_add(*reqs, strdup(cachepkgname)); } } } } } /** * @brief Compute the packages requiring a given package. * @param pkg a package * @return the list of packages requiring pkg */ alpm_list_t SYMEXPORT *alpm_pkg_compute_requiredby(pmpkg_t *pkg) { const alpm_list_t *i; alpm_list_t *reqs = NULL; pmdb_t *db; if(pkg->origin == PKG_FROM_FILE) { /* The sane option; search locally for things that require this. */ db = alpm_option_get_localdb(); find_requiredby(pkg, db, &reqs); } else { /* We have a DB package. if it is a local package, then we should * only search the local DB; else search all known sync databases. */ db = pkg->origin_data.db; if(db->is_local) { find_requiredby(pkg, db, &reqs); } else { for(i = handle->dbs_sync; i; i = i->next) { db = i->data; find_requiredby(pkg, db, &reqs); } reqs = alpm_list_msort(reqs, alpm_list_count(reqs), _alpm_str_cmp); } } return(reqs); } /** @} */ pmpkg_t *_alpm_pkg_new(void) { pmpkg_t* pkg; ALPM_LOG_FUNC; CALLOC(pkg, 1, sizeof(pmpkg_t), RET_ERR(PM_ERR_MEMORY, NULL)); return(pkg); } pmpkg_t *_alpm_pkg_dup(pmpkg_t *pkg) { pmpkg_t *newpkg; alpm_list_t *i; ALPM_LOG_FUNC; CALLOC(newpkg, 1, sizeof(pmpkg_t), RET_ERR(PM_ERR_MEMORY, NULL)); newpkg->name_hash = pkg->name_hash; STRDUP(newpkg->filename, pkg->filename, RET_ERR(PM_ERR_MEMORY, newpkg)); STRDUP(newpkg->name, pkg->name, RET_ERR(PM_ERR_MEMORY, newpkg)); STRDUP(newpkg->version, pkg->version, RET_ERR(PM_ERR_MEMORY, newpkg)); STRDUP(newpkg->desc, pkg->desc, RET_ERR(PM_ERR_MEMORY, newpkg)); STRDUP(newpkg->url, pkg->url, RET_ERR(PM_ERR_MEMORY, newpkg)); newpkg->builddate = pkg->builddate; newpkg->installdate = pkg->installdate; STRDUP(newpkg->packager, pkg->packager, RET_ERR(PM_ERR_MEMORY, newpkg)); STRDUP(newpkg->md5sum, pkg->md5sum, RET_ERR(PM_ERR_MEMORY, newpkg)); STRDUP(newpkg->arch, pkg->arch, RET_ERR(PM_ERR_MEMORY, newpkg)); newpkg->size = pkg->size; newpkg->isize = pkg->isize; newpkg->scriptlet = pkg->scriptlet; newpkg->reason = pkg->reason; newpkg->licenses = alpm_list_strdup(pkg->licenses); newpkg->replaces = alpm_list_strdup(pkg->replaces); newpkg->groups = alpm_list_strdup(pkg->groups); newpkg->files = alpm_list_strdup(pkg->files); newpkg->backup = alpm_list_strdup(pkg->backup); for(i = pkg->depends; i; i = alpm_list_next(i)) { newpkg->depends = alpm_list_add(newpkg->depends, _alpm_dep_dup(i->data)); } newpkg->optdepends = alpm_list_strdup(pkg->optdepends); newpkg->conflicts = alpm_list_strdup(pkg->conflicts); newpkg->provides = alpm_list_strdup(pkg->provides); newpkg->deltas = alpm_list_copy_data(pkg->deltas, sizeof(pmdelta_t)); /* internal */ newpkg->origin = pkg->origin; newpkg->ops = pkg->ops; if(newpkg->origin == PKG_FROM_FILE) { newpkg->origin_data.file = strdup(pkg->origin_data.file); } else { newpkg->origin_data.db = pkg->origin_data.db; } newpkg->infolevel = pkg->infolevel; return(newpkg); } void _alpm_pkg_free(pmpkg_t *pkg) { ALPM_LOG_FUNC; if(pkg == NULL) { return; } FREE(pkg->filename); FREE(pkg->name); FREE(pkg->version); FREE(pkg->desc); FREE(pkg->url); FREE(pkg->packager); FREE(pkg->md5sum); FREE(pkg->arch); FREELIST(pkg->licenses); FREELIST(pkg->replaces); FREELIST(pkg->groups); FREELIST(pkg->files); FREELIST(pkg->backup); alpm_list_free_inner(pkg->depends, (alpm_list_fn_free)_alpm_dep_free); alpm_list_free(pkg->depends); FREELIST(pkg->optdepends); FREELIST(pkg->conflicts); FREELIST(pkg->provides); alpm_list_free_inner(pkg->deltas, (alpm_list_fn_free)_alpm_delta_free); alpm_list_free(pkg->deltas); alpm_list_free(pkg->delta_path); alpm_list_free(pkg->removes); if(pkg->origin == PKG_FROM_FILE) { FREE(pkg->origin_data.file); } FREE(pkg); } /* This function should be used when removing a target from upgrade/sync target list * Case 1: If pkg is a loaded package file (PKG_FROM_FILE), it will be freed. * Case 2: If pkg is a pkgcache entry (PKG_FROM_CACHE), it won't be freed, * only the transaction specific fields of pkg will be freed. */ void _alpm_pkg_free_trans(pmpkg_t *pkg) { ALPM_LOG_FUNC; if(pkg == NULL) { return; } if(pkg->origin == PKG_FROM_FILE) { _alpm_pkg_free(pkg); return; } alpm_list_free(pkg->removes); pkg->removes = NULL; } /* Is spkg an upgrade for localpkg? */ int _alpm_pkg_compare_versions(pmpkg_t *spkg, pmpkg_t *localpkg) { ALPM_LOG_FUNC; return alpm_pkg_vercmp(alpm_pkg_get_version(spkg), alpm_pkg_get_version(localpkg)); } /* Helper function for comparing packages */ int _alpm_pkg_cmp(const void *p1, const void *p2) { pmpkg_t *pkg1 = (pmpkg_t *)p1; pmpkg_t *pkg2 = (pmpkg_t *)p2; return(strcoll(pkg1->name, pkg2->name)); } /* Test for existence of a package in a alpm_list_t* * of pmpkg_t* */ pmpkg_t *_alpm_pkg_find(alpm_list_t *haystack, const char *needle) { alpm_list_t *lp; unsigned long needle_hash; ALPM_LOG_FUNC; if(needle == NULL || haystack == NULL) { return(NULL); } needle_hash = _alpm_hash_sdbm(needle); for(lp = haystack; lp; lp = lp->next) { pmpkg_t *info = lp->data; if(info) { /* a zero hash will cause a fall-through just in case */ if(info->name_hash && info->name_hash != needle_hash) { continue; } /* finally: we had hash match, verify string match */ if(strcmp(info->name, needle) == 0) { return(info); } } } return(NULL); } /** Test if a package should be ignored. * * Checks if the package is ignored via IgnorePkg, or if the package is * in a group ignored via IgnoreGrp. * * @param pkg the package to test * * @return 1 if the package should be ignored, 0 otherwise */ int _alpm_pkg_should_ignore(pmpkg_t *pkg) { alpm_list_t *groups = NULL; /* first see if the package is ignored */ if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(pkg))) { return(1); } /* next see if the package is in a group that is ignored */ for(groups = handle->ignoregrp; groups; groups = alpm_list_next(groups)) { char *grp = (char *)alpm_list_getdata(groups); if(alpm_list_find_str(alpm_pkg_get_groups(pkg), grp)) { return(1); } } return(0); } /* vim: set ts=2 sw=2 noet: */