/* * alpm.c * * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> * Copyright (c) 2005 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, * USA. */ #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <fcntl.h> #include <ctype.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <time.h> #include <syslog.h> #include <limits.h> /* PATH_MAX */ #include <stdarg.h> #include <libintl.h> /* pacman */ #include "log.h" #include "error.h" #include "versioncmp.h" #include "md5.h" #include "sha1.h" #include "alpm_list.h" #include "package.h" #include "group.h" #include "util.h" #include "db.h" #include "cache.h" #include "deps.h" #include "conflict.h" #include "backup.h" #include "add.h" #include "remove.h" #include "sync.h" #include "handle.h" #include "provide.h" #include "server.h" #include "alpm.h" #define min(X, Y) ((X) < (Y) ? (X) : (Y)) /* Globals */ pmhandle_t *handle = NULL; enum _pmerrno_t pm_errno SYMEXPORT; /** \addtogroup alpm_interface Interface Functions * @brief Functions to initialize and release libalpm * @{ */ /** Initializes the library. This must be called before any other * functions are called. * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_initialize() { ASSERT(handle == NULL, RET_ERR(PM_ERR_HANDLE_NOT_NULL, -1)); handle = _alpm_handle_new(); if(handle == NULL) { RET_ERR(PM_ERR_MEMORY, -1); } return(0); } /** Release the library. This should be the last alpm call you make. * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_release() { int dbs_left = 0; ALPM_LOG_FUNC; ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); /* free the transaction if there is any */ if(handle->trans) { alpm_trans_release(); } /* close local database */ if(handle->db_local) { alpm_db_unregister(handle->db_local); handle->db_local = NULL; } /* and also sync ones */ while((dbs_left = alpm_list_count(handle->dbs_sync)) > 0) { pmdb_t *db = (pmdb_t *)handle->dbs_sync->data; _alpm_log(PM_LOG_DEBUG, _("removing DB %s, %d remaining..."), db->treename, dbs_left); alpm_db_unregister(db); db = NULL; } FREEHANDLE(handle); return(0); } /** @} */ /** \addtogroup alpm_databases Database Functions * @brief Functions to query and manipulate the database of libalpm * @{ */ /** Register a package database * @param treename the name of the repository * @return a pmdb_t* on success (the value), NULL on error */ pmdb_t SYMEXPORT *alpm_db_register(char *treename) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, NULL)); ASSERT(treename != NULL && strlen(treename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, NULL)); /* Do not register a database if a transaction is on-going */ ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, NULL)); return(_alpm_db_register(treename, NULL)); } /** Unregister a package database * @param db pointer to the package database to unregister * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int alpm_db_unregister(pmdb_t *db) { int found = 0; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); ASSERT(db != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); /* Do not unregister a database if a transaction is on-going */ ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1)); if(db == handle->db_local) { handle->db_local = NULL; found = 1; } else { void *data; handle->dbs_sync = alpm_list_remove(handle->dbs_sync, db, _alpm_db_cmp, &data); if(data) { found = 1; } } if(!found) { RET_ERR(PM_ERR_DB_NOT_FOUND, -1); } _alpm_log(PM_LOG_DEBUG, _("unregistering database '%s'"), db->treename); /* Cleanup */ _alpm_db_free_pkgcache(db); _alpm_log(PM_LOG_DEBUG, _("closing database '%s'"), db->treename); _alpm_db_close(db); _alpm_db_free(db); return(0); } /** Set the serverlist of a database. * @param db database pointer * @param url url of the server * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int alpm_db_setserver(pmdb_t *db, const char *url) { int found = 0; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1)); if(strcmp(db->treename, "local") == 0) { if(handle->db_local != NULL) { found = 1; } } else { alpm_list_t *i; for(i = handle->dbs_sync; i && !found; i = i->next) { pmdb_t *sdb = i->data; if(strcmp(db->treename, sdb->treename) == 0) { found = 1; } } } if(!found) { RET_ERR(PM_ERR_DB_NOT_FOUND, -1); } if(url && strlen(url)) { pmserver_t *server; if((server = _alpm_server_new(url)) == NULL) { /* pm_errno is set by _alpm_server_new */ return(-1); } db->servers = alpm_list_add(db->servers, server); _alpm_log(PM_LOG_DEBUG, _("adding new server to database '%s': protocol '%s', server '%s', path '%s'"), db->treename, server->s_url->scheme, server->s_url->host, server->s_url->doc); } else { FREELIST(db->servers); _alpm_log(PM_LOG_DEBUG, _("serverlist flushed for '%s'"), db->treename); } return(0); } /** Update a package database * @param force if true, then forces the update, otherwise update only in case * the database isn't up to date * @param db pointer to the package database to update * @return 0 on success, > 0 on error (pm_errno is set accordingly), < 0 if up * to date */ int SYMEXPORT alpm_db_update(int force, pmdb_t *db) { alpm_list_t *lp; char path[PATH_MAX]; alpm_list_t *files = NULL; char newmtime[16] = ""; char lastupdate[16] = ""; int ret; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); ASSERT(db != NULL && db != handle->db_local, RET_ERR(PM_ERR_WRONG_ARGS, -1)); /* Verify we are in a transaction. This is done _mainly_ because we need a DB * lock - if we update without a db lock, we may kludge some other pacman * process that _has_ a lock. */ ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(handle->trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1)); ASSERT(handle->trans->type == PM_TRANS_TYPE_SYNC, RET_ERR(PM_ERR_TRANS_TYPE, -1)); if(!alpm_list_find(handle->dbs_sync, db)) { RET_ERR(PM_ERR_DB_NOT_FOUND, -1); } if(!force) { /* get the lastupdate time */ _alpm_db_getlastupdate(db, lastupdate); if(strlen(lastupdate) == 0) { _alpm_log(PM_LOG_DEBUG, _("failed to get lastupdate time for %s (no big deal)"), db->treename); } } /* build a one-element list */ snprintf(path, PATH_MAX, "%s" PM_EXT_DB, db->treename); files = alpm_list_add(files, strdup(path)); snprintf(path, PATH_MAX, "%s%s", handle->root, handle->dbpath); ret = _alpm_downloadfiles_forreal(db->servers, path, files, lastupdate, newmtime); FREELIST(files); if(ret == 1) { /* mtimes match, do nothing */ pm_errno = 0; return(1); } else if(ret == -1) { /* we use downloadLastErrString and downloadLastErrCode here, error returns from * libdownload */ _alpm_log(PM_LOG_DEBUG, _("failed to sync db: %s [%d]"), downloadLastErrString, downloadLastErrCode); RET_ERR(PM_ERR_DB_SYNC, -1); } else { if(strlen(newmtime)) { _alpm_log(PM_LOG_DEBUG, _("sync: new mtime for %s: %s"), db->treename, newmtime); _alpm_db_setlastupdate(db, newmtime); } snprintf(path, PATH_MAX, "%s%s/%s" PM_EXT_DB, handle->root, handle->dbpath, db->treename); /* remove the old dir */ _alpm_log(PM_LOG_DEBUG, _("flushing database %s/%s"), handle->dbpath, db->treename); for(lp = _alpm_db_get_pkgcache(db, INFRQ_NONE); lp; lp = lp->next) { if(_alpm_db_remove(db, lp->data) == -1) { if(lp->data) { _alpm_log(PM_LOG_ERROR, _("could not remove database entry %s/%s"), db->treename, ((pmpkg_t *)lp->data)->name); } RET_ERR(PM_ERR_DB_REMOVE, -1); } } /* Cache needs to be rebuild */ _alpm_db_free_pkgcache(db); /* uncompress the sync database */ if(_alpm_db_install(db, path) == -1) { return -1; } } return(0); } /** Get a package entry from a package database * @param db pointer to the package database to get the package from * @param name of the package * @return the package entry on success, NULL on error */ pmpkg_t SYMEXPORT *alpm_db_readpkg(pmdb_t *db, char *name) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, return(NULL)); ASSERT(db != NULL, return(NULL)); ASSERT(name != NULL && strlen(name) != 0, return(NULL)); return(_alpm_db_get_pkgfromcache(db, name)); } /** Get the package cache of a package database * @param db pointer to the package database to get the package from * @return the list of packages on success, NULL on error */ alpm_list_t SYMEXPORT *alpm_db_getpkgcache(pmdb_t *db) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, return(NULL)); ASSERT(db != NULL, return(NULL)); return(_alpm_db_get_pkgcache(db, INFRQ_NONE)); } /** Get the list of packages that a package provides * @param db pointer to the package database to get the package from * @param name name of the package * @return the list of packages on success, NULL on error */ alpm_list_t SYMEXPORT *alpm_db_whatprovides(pmdb_t *db, char *name) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, return(NULL)); ASSERT(db != NULL, return(NULL)); ASSERT(name != NULL && strlen(name) != 0, return(NULL)); return(_alpm_db_whatprovides(db, name)); } /** Get a group entry from a package database * @param db pointer to the package database to get the group from * @param name of the group * @return the groups entry on success, NULL on error */ pmgrp_t SYMEXPORT *alpm_db_readgrp(pmdb_t *db, char *name) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, return(NULL)); ASSERT(db != NULL, return(NULL)); ASSERT(name != NULL && strlen(name) != 0, return(NULL)); return(_alpm_db_get_grpfromcache(db, name)); } /** Get the group cache of a package database * @param db pointer to the package database to get the group from * @return the list of groups on success, NULL on error */ alpm_list_t SYMEXPORT *alpm_db_getgrpcache(pmdb_t *db) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, return(NULL)); ASSERT(db != NULL, return(NULL)); return(_alpm_db_get_grpcache(db)); } /** @} */ /** \addtogroup alpm_packages Package Functions * @brief Functions to manipulate libalpm packages * @{ */ /** Create a package from a file. * @param filename location of the package tarball * @param pkg address of the package pointer * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_pkg_load(char *filename, pmpkg_t **pkg) { _alpm_log(PM_LOG_FUNCTION, "enter alpm_pkg_load"); /* Sanity checks */ ASSERT(filename != NULL && strlen(filename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1)); ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); *pkg = _alpm_pkg_load(filename); if(*pkg == NULL) { /* pm_errno is set by pkg_load */ return(-1); } return(0); } /** 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(PM_LOG_FUNCTION, "enter alpm_pkg_free"); ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); /* Only free packages loaded in user space */ if(pkg->origin != PKG_FROM_CACHE) { _alpm_pkg_free(pkg); } return(0); } /** Check the integrity (with sha1) of a package from the sync cache. * @param pkg package pointer * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int alpm_pkg_checksha1sum(pmpkg_t *pkg) { char path[PATH_MAX]; char *sha1sum = NULL; int retval = 0; 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_CACHE, RET_ERR(PM_ERR_PKG_INVALID, -1)); ASSERT(pkg->data != handle->db_local, RET_ERR(PM_ERR_PKG_INVALID, -1)); snprintf(path, PATH_MAX, "%s%s/%s-%s" PM_EXT_PKG, handle->root, handle->cachedir, pkg->name, pkg->version); sha1sum = _alpm_SHAFile(path); if(sha1sum == NULL) { _alpm_log(PM_LOG_ERROR, _("could not get sha1sum for package %s-%s"), pkg->name, pkg->version); pm_errno = PM_ERR_NOT_A_FILE; retval = -1; } else { if(strcmp(sha1sum, alpm_pkg_get_sha1sum(pkg)) == 0) { _alpm_log(PM_LOG_DEBUG, _("sha1sums for package %s-%s match"), pkg->name, pkg->version); } else { _alpm_log(PM_LOG_ERROR, _("sha1sums do not match for package %s-%s"), pkg->name, pkg->version); pm_errno = PM_ERR_PKG_INVALID; retval = -1; } } FREE(sha1sum); return(retval); } /** 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 alpm_pkg_checkmd5sum(pmpkg_t *pkg) { char path[PATH_MAX]; char *md5sum = NULL; int retval = 0; 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_CACHE, RET_ERR(PM_ERR_PKG_INVALID, -1)); ASSERT(pkg->data != handle->db_local, RET_ERR(PM_ERR_PKG_INVALID, -1)); snprintf(path, PATH_MAX, "%s%s/%s-%s" PM_EXT_PKG, handle->root, handle->cachedir, pkg->name, pkg->version); md5sum = _alpm_MDFile(path); if(md5sum == NULL) { _alpm_log(PM_LOG_ERROR, _("could not get md5sum for package %s-%s"), pkg->name, pkg->version); pm_errno = PM_ERR_NOT_A_FILE; retval = -1; } else { if(strcmp(md5sum, alpm_pkg_get_md5sum(pkg)) == 0) { _alpm_log(PM_LOG_DEBUG, _("md5sums for package %s-%s match"), pkg->name, pkg->version); } else { _alpm_log(PM_LOG_ERROR, _("md5sums do not match for package %s-%s"), pkg->name, pkg->version); pm_errno = PM_ERR_PKG_INVALID; retval = -1; } } FREE(md5sum); return(retval); } /** Compare versions. * @param ver1 first version * @param ver2 secont version * @return postive, 0 or negative if ver1 is less, equal or more * than ver2, respectively. */ int SYMEXPORT alpm_pkg_vercmp(const char *ver1, const char *ver2) { ALPM_LOG_FUNC; return(_alpm_versioncmp(ver1, ver2)); } /* internal */ static char *_supported_archs[] = { "i586", "i686", "ppc", "x86_64", }; char SYMEXPORT *alpm_pkg_name_hasarch(char *pkgname) { /* TODO remove this when we transfer everything over to -ARCH * * this parsing sucks... it's done to support * two package formats for the time being: * package-name-foo-1.0.0-1-i686 * and * package-name-bar-1.2.3-1 */ size_t i = 0; char *arch, *cmp, *p; ALPM_LOG_FUNC; if((p = strrchr(pkgname, '-'))) { for(i=0; i < sizeof(_supported_archs)/sizeof(char*); ++i) { cmp = p+1; arch = _supported_archs[i]; /* whee, case insensitive compare */ while(*arch && *cmp && tolower(*arch++) == tolower(*cmp++)) ; if(*arch || *cmp) { continue; } return(p); } } return(NULL); } /** @} */ /** \addtogroup alpm_sync Sync Functions * @brief Functions to get informations about libalpm syncs * @{ */ /** Searches a database * @param db pointer to the package database to search in * @param needles the list of strings to search for * @return the list of packages on success, NULL on error */ alpm_list_t SYMEXPORT *alpm_db_search(pmdb_t *db, alpm_list_t* needles) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, return(NULL)); ASSERT(db != NULL, return(NULL)); return(_alpm_db_search(db, needles)); } /** @} */ /** \addtogroup alpm_trans Transaction Functions * @brief Functions to manipulate libalpm transactions * @{ */ /** Initialize the transaction. * @param type type of the transaction * @param flags flags of the transaction (like nodeps, etc) * @param event event callback function pointer * @param conv question callback function pointer * @param progress progress callback function pointer * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_trans_init(pmtranstype_t type, unsigned int flags, alpm_trans_cb_event event, alpm_trans_cb_conv conv, alpm_trans_cb_progress progress) { char path[PATH_MAX]; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1)); /* lock db */ snprintf(path, PATH_MAX, "%s%s", handle->root, PM_LOCK); handle->lckfd = _alpm_lckmk(path); if(handle->lckfd == -1) { RET_ERR(PM_ERR_HANDLE_LOCK, -1); } handle->trans = _alpm_trans_new(); if(handle->trans == NULL) { RET_ERR(PM_ERR_MEMORY, -1); } return(_alpm_trans_init(handle->trans, type, flags, event, conv, progress)); } /** Search for packages to upgrade and add them to the transaction. * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_trans_sysupgrade() { pmtrans_t *trans; ALPM_LOG_FUNC; ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); trans = handle->trans; ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1)); ASSERT(trans->type == PM_TRANS_TYPE_SYNC, RET_ERR(PM_ERR_TRANS_TYPE, -1)); return(_alpm_trans_sysupgrade(trans)); } /** Add a target to the transaction. * @param target the name of the target to add * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_trans_addtarget(char *target) { pmtrans_t *trans; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); ASSERT(target != NULL && strlen(target) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1)); trans = handle->trans; ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1)); return(_alpm_trans_addtarget(trans, target)); } /** Prepare a transaction. * @param data the address of a PM_LIST where detailed description * of an error can be dumped (ie. list of conflicting files) * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_trans_prepare(alpm_list_t **data) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(handle->trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1)); return(_alpm_trans_prepare(handle->trans, data)); } /** Commit a transaction. * @param data the address of a PM_LIST where detailed description * of an error can be dumped (ie. list of conflicting files) * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_trans_commit(alpm_list_t **data) { ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(handle->trans->state == STATE_PREPARED, RET_ERR(PM_ERR_TRANS_NOT_PREPARED, -1)); /* Check for database R/W permission */ if(!(handle->trans->flags & PM_TRANS_FLAG_PRINTURIS)) { /* The print-uris operation is a bit odd. So we explicitly check for it */ ASSERT(handle->access == PM_ACCESS_RW, RET_ERR(PM_ERR_BADPERMS, -1)); } return(_alpm_trans_commit(handle->trans, data)); } /** Release a transaction. * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_trans_release() { pmtrans_t *trans; char path[PATH_MAX]; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); trans = handle->trans; ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(trans->state != STATE_IDLE, RET_ERR(PM_ERR_TRANS_NULL, -1)); /* during a commit do not interrupt inmediatelly, just after a target */ if(trans->state == STATE_COMMITING || trans->state == STATE_INTERRUPTED) { if(trans->state == STATE_COMMITING) { trans->state = STATE_INTERRUPTED; } pm_errno = PM_ERR_TRANS_COMMITING; return(-1); } FREETRANS(handle->trans); /* unlock db */ if(handle->lckfd != -1) { close(handle->lckfd); handle->lckfd = -1; } snprintf(path, PATH_MAX, "%s%s", handle->root, PM_LOCK); if(_alpm_lckrm(path)) { _alpm_log(PM_LOG_WARNING, _("could not remove lock file %s"), path); alpm_logaction(_("warning: could not remove lock file %s"), path); } return(0); } /** @} */ /** \addtogroup alpm_log Logging Functions * @brief Functions to log using libalpm * @{ */ /** A printf-like function for logging. * @param fmt output format * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_logaction(char *fmt, ...) { char str[LOG_STR_LEN]; va_list args; ALPM_LOG_FUNC; /* Sanity checks */ ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1)); va_start(args, fmt); vsnprintf(str, LOG_STR_LEN, fmt, args); va_end(args); /* TODO We should add a prefix to log strings depending on who called us. * If logaction was called by the frontend: * USER: <the frontend log> * and if called internally: * ALPM: <the library log> * Moreover, the frontend should be able to choose its prefix * (USER by default?): * pacman: "PACMAN" * kpacman: "KPACMAN" * This would allow us to share the log file between several frontends * and know who does what */ return(_alpm_logaction(handle->usesyslog, handle->logfd, str)); } /** @} */ /** \addtogroup alpm_misc Miscellaneous Functions * @brief Various libalpm functions * @{ */ /** Get the md5 sum of file. * @param name name of the file * @return the checksum on success, NULL on error */ char SYMEXPORT *alpm_get_md5sum(char *name) { ALPM_LOG_FUNC; ASSERT(name != NULL, return(NULL)); return(_alpm_MDFile(name)); } /** Get the sha1 sum of file. * @param name name of the file * @return the checksum on success, NULL on error */ char SYMEXPORT *alpm_get_sha1sum(char *name) { ALPM_LOG_FUNC; ASSERT(name != NULL, return(NULL)); return(_alpm_SHAFile(name)); } /** Fetch a remote pkg. * @param url * @return the downloaded filename on success, NULL on error */ char SYMEXPORT *alpm_fetch_pkgurl(char *url) { ALPM_LOG_FUNC; ASSERT(strstr(url, "://"), return(NULL)); return(_alpm_fetch_pkgurl(url)); } /** Parses a configuration file. * @param file path to the config file. * @param callback a function to be called upon new database creation * @param this_section the config current section being parsed * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_parse_config(char *file, alpm_cb_db_register callback, const char *this_section) { FILE *fp = NULL; char line[PATH_MAX+1]; char *ptr = NULL; char *key = NULL; int linenum = 0; char section[256] = ""; pmdb_t *db = NULL; ALPM_LOG_FUNC; fp = fopen(file, "r"); if(fp == NULL) { return(0); } if(this_section != NULL && strlen(this_section) > 0) { strncpy(section, this_section, min(255, strlen(this_section))); if(!strcmp(section, "local")) { RET_ERR(PM_ERR_CONF_LOCAL, -1); } if(strcmp(section, "options")) { db = _alpm_db_register(section, callback); } } while(fgets(line, PATH_MAX, fp)) { linenum++; _alpm_strtrim(line); if(strlen(line) == 0 || line[0] == '#') { continue; } if(line[0] == '[' && line[strlen(line)-1] == ']') { /* new config section */ ptr = line; ptr++; strncpy(section, ptr, min(255, strlen(ptr)-1)); section[min(255, strlen(ptr)-1)] = '\0'; _alpm_log(PM_LOG_DEBUG, _("config: new section '%s'"), section); if(!strlen(section)) { RET_ERR(PM_ERR_CONF_BAD_SECTION, -1); } if(!strcmp(section, "local")) { RET_ERR(PM_ERR_CONF_LOCAL, -1); } if(strcmp(section, "options")) { db = _alpm_db_register(section, callback); if(db == NULL) { /* pm_errno is set by alpm_db_register */ return(-1); } } } else { /* directive */ ptr = line; key = strsep(&ptr, "="); if(key == NULL) { RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1); } _alpm_strtrim(key); key = _alpm_strtoupper(key); if(!strlen(section) && strcmp(key, "INCLUDE")) { RET_ERR(PM_ERR_CONF_DIRECTIVE_OUTSIDE_SECTION, -1); } if(ptr == NULL) { if(!strcmp(key, "NOPASSIVEFTP")) { alpm_option_set_nopassiveftp(1); _alpm_log(PM_LOG_DEBUG, _("config: nopassiveftp")); } else if(!strcmp(key, "USESYSLOG")) { alpm_option_set_usesyslog(1); _alpm_log(PM_LOG_DEBUG, _("config: usesyslog")); } else if(!strcmp(key, "ILOVECANDY")) { alpm_option_set_chomp(1); _alpm_log(PM_LOG_DEBUG, _("config: chomp")); } else if(!strcmp(key, "USECOLOR")) { alpm_option_set_usecolor(1); _alpm_log(PM_LOG_DEBUG, _("config: usecolor")); } else { RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1); } } else { _alpm_strtrim(ptr); if(!strcmp(key, "INCLUDE")) { char conf[PATH_MAX]; strncpy(conf, ptr, PATH_MAX); _alpm_log(PM_LOG_DEBUG, _("config: including %s"), conf); alpm_parse_config(conf, callback, section); } else if(!strcmp(section, "options")) { if(!strcmp(key, "NOUPGRADE")) { char *p = ptr; char *q; while((q = strchr(p, ' '))) { *q = '\0'; alpm_option_add_noupgrade(p); _alpm_log(PM_LOG_DEBUG, _("config: noupgrade: %s"), p); p = q; p++; } alpm_option_add_noupgrade(p); _alpm_log(PM_LOG_DEBUG, _("config: noupgrade: %s"), p); } else if(!strcmp(key, "NOEXTRACT")) { char *p = ptr; char *q; while((q = strchr(p, ' '))) { *q = '\0'; alpm_option_add_noextract(p); _alpm_log(PM_LOG_DEBUG, _("config: noextract: %s"), p); p = q; p++; } alpm_option_add_noextract(p); _alpm_log(PM_LOG_DEBUG, _("config: noextract: %s"), p); } else if(!strcmp(key, "IGNOREPKG")) { char *p = ptr; char *q; while((q = strchr(p, ' '))) { *q = '\0'; alpm_option_add_ignorepkg(p); _alpm_log(PM_LOG_DEBUG, _("config: ignorepkg: %s"), p); p = q; p++; } alpm_option_add_ignorepkg(p); _alpm_log(PM_LOG_DEBUG, _("config: ignorepkg: %s"), p); } else if(!strcmp(key, "HOLDPKG")) { char *p = ptr; char *q; while((q = strchr(p, ' '))) { *q = '\0'; alpm_option_add_holdpkg(p); _alpm_log(PM_LOG_DEBUG, _("config: holdpkg: %s"), p); p = q; p++; } alpm_option_add_holdpkg(p); _alpm_log(PM_LOG_DEBUG, _("config: holdpkg: %s"), p); } else if(!strcmp(key, "DBPATH")) { /* shave off the leading slash, if there is one */ if(*ptr == '/') { ptr++; } alpm_option_set_dbpath(ptr); _alpm_log(PM_LOG_DEBUG, _("config: dbpath: %s"), ptr); } else if(!strcmp(key, "CACHEDIR")) { /* shave off the leading slash, if there is one */ if(*ptr == '/') { ptr++; } alpm_option_set_cachedir(ptr); _alpm_log(PM_LOG_DEBUG, _("config: cachedir: %s"), ptr); } else if (!strcmp(key, "LOGFILE")) { alpm_option_set_logfile(ptr); _alpm_log(PM_LOG_DEBUG, _("config: logfile: %s"), ptr); } else if (!strcmp(key, "XFERCOMMAND")) { alpm_option_set_xfercommand(ptr); _alpm_log(PM_LOG_DEBUG, _("config: xfercommand: %s"), ptr); } else if (!strcmp(key, "UPGRADEDELAY")) { /* The config value is in days, we use seconds */ time_t ud = atol(ptr) * 60 * 60 *24; alpm_option_set_upgradedelay(ud); _alpm_log(PM_LOG_DEBUG, _("config: upgradedelay: %d"), ud); } else { RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1); } } else { if(!strcmp(key, "SERVER")) { /* add to the list */ if(alpm_db_setserver(db, ptr) != 0) { /* pm_errno is set by alpm_db_setserver */ return(-1); } } else { RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1); } } line[0] = '\0'; } } } fclose(fp); return(0); } /** @} */ /* This function is mostly the same as sync.c find_replacements and sysupgrade * functions, and we should be able to combine them - this is an interim * solution made for -Qu operation */ alpm_list_t *alpm_get_upgrades() { int found = 0; alpm_list_t *syncpkgs = NULL; alpm_list_t *i, *j, *k; ALPM_LOG_FUNC; /* TODO holy nested loops, Batman! */ /* check for "recommended" package replacements */ _alpm_log(PM_LOG_DEBUG, _("checking for package replacements")); for(i = handle->dbs_sync; i; i = i->next) { for(j = _alpm_db_get_pkgcache(i->data, INFRQ_DESC); j; j = j->next) { pmpkg_t *spkg = j->data; for(k = spkg->replaces; k; k = k->next) { alpm_list_t *m; for(m = _alpm_db_get_pkgcache(handle->db_local, INFRQ_NONE); m; m = m->next) { pmpkg_t *lpkg = m->data; if(strcmp(k->data, lpkg->name) == 0) { _alpm_log(PM_LOG_DEBUG, _("checking replacement '%s' for package '%s'"), k->data, spkg->name); if(alpm_list_find_str(handle->ignorepkg, lpkg->name)) { _alpm_log(PM_LOG_WARNING, _("%s-%s: ignoring package upgrade (to be replaced by %s-%s)"), lpkg->name, lpkg->version, spkg->name, spkg->version); } else { /* assume all replaces=() packages are accepted */ pmsyncpkg_t *sync = NULL; pmpkg_t *dummy = _alpm_pkg_new(lpkg->name, NULL); if(dummy == NULL) { pm_errno = PM_ERR_MEMORY; goto error; } dummy->requiredby = alpm_list_strdup(lpkg->requiredby); /* check if spkg->name is already in the packages list. */ alpm_list_t *s; for(s = syncpkgs; s && !found; s = s->next) { sync = i->data; if(sync && !strcmp(sync->pkg->name, spkg->name)) { found = 1; } } if(found) { /* found it -- just append to the replaces list */ sync->data = alpm_list_add(sync->data, dummy); } else { /* none found -- enter pkg into the final sync list */ sync = _alpm_sync_new(PM_SYNC_TYPE_REPLACE, spkg, NULL); if(sync == NULL) { FREEPKG(dummy); pm_errno = PM_ERR_MEMORY; goto error; } sync->data = alpm_list_add(NULL, dummy); syncpkgs = alpm_list_add(syncpkgs, sync); } _alpm_log(PM_LOG_DEBUG, _("%s-%s elected for upgrade (to be replaced by %s-%s)"), lpkg->name, lpkg->version, spkg->name, spkg->version); } break; } } } } } /* now do normal upgrades */ for(i = _alpm_db_get_pkgcache(handle->db_local, INFRQ_NONE); i; i = i->next) { int replace=0; pmpkg_t *local = i->data; pmpkg_t *spkg = NULL; pmsyncpkg_t *sync; for(j = handle->dbs_sync; !spkg && j; j = j->next) { spkg = _alpm_db_get_pkgfromcache(j->data, local->name); } if(spkg == NULL) { _alpm_log(PM_LOG_DEBUG, _("'%s' not found in sync db -- skipping"), local->name); continue; } /* we don't care about a to-be-replaced package's newer version */ for(j = syncpkgs; j && !replace; j=j->next) { sync = j->data; if(sync->type == PM_SYNC_TYPE_REPLACE) { if(_alpm_pkg_isin(spkg->name, sync->data)) { replace=1; } } } if(replace) { _alpm_log(PM_LOG_DEBUG, _("'%s' is already elected for removal -- skipping"), local->name); continue; } if(alpm_pkg_compare_versions(local, spkg)) { _alpm_log(PM_LOG_DEBUG, _("%s-%s elected for upgrade (%s => %s)"), local->name, local->version, local->version, spkg->version); alpm_list_t *s; pmsyncpkg_t *sync = NULL; found = 0; for(s = syncpkgs; s && !found; s = s->next) { sync = s->data; if(sync && strcmp(sync->pkg->name, local->name) == 0) { found = 1; } } if(!found) { pmpkg_t *dummy = _alpm_pkg_new(local->name, local->version); if(dummy == NULL) { goto error; } sync = _alpm_sync_new(PM_SYNC_TYPE_UPGRADE, spkg, dummy); if(sync == NULL) { FREEPKG(dummy); goto error; } syncpkgs = alpm_list_add(syncpkgs, sync); } } } return(syncpkgs); error: if(syncpkgs) { alpm_list_free_inner(syncpkgs, _alpm_sync_free); alpm_list_free(syncpkgs); } return(NULL); } /* vim: set ts=2 sw=2 noet: */