/* * sync.c * * Copyright (c) 2002-2007 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, see <http://www.gnu.org/licenses/>. */ #include "config.h" #include <sys/types.h> /* off_t */ #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <string.h> #include <unistd.h> #include <time.h> #include <dirent.h> /* libalpm */ #include "sync.h" #include "alpm_list.h" #include "log.h" #include "package.h" #include "db.h" #include "cache.h" #include "deps.h" #include "conflict.h" #include "trans.h" #include "util.h" #include "handle.h" #include "alpm.h" #include "dload.h" #include "delta.h" pmsyncpkg_t *_alpm_sync_new(pmpkgreason_t newreason, pmpkg_t *spkg, alpm_list_t *removes) { pmsyncpkg_t *sync; ALPM_LOG_FUNC; CALLOC(sync, 1, sizeof(pmsyncpkg_t), RET_ERR(PM_ERR_MEMORY, NULL)); sync->newreason = newreason; sync->pkg = spkg; sync->removes = removes; return(sync); } void _alpm_sync_free(pmsyncpkg_t *sync) { ALPM_LOG_FUNC; if(sync == NULL) { return; } alpm_list_free(sync->removes); sync->removes = NULL; FREE(sync); } /* Find recommended replacements for packages during a sync. */ static int find_replacements(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, alpm_list_t **syncpkgs) { alpm_list_t *i, *j, *k; /* wow */ ALPM_LOG_FUNC; if(syncpkgs == NULL) { return(-1); } /* check for "recommended" package replacements */ _alpm_log(PM_LOG_DEBUG, "checking for package replacements\n"); for(i = dbs_sync; i; i = i->next) { pmdb_t *db = i->data; /* for each db, check each package's REPLACES list */ for(j = _alpm_db_get_pkgcache(db); j; j = j->next) { pmpkg_t *spkg = j->data; for(k = alpm_pkg_get_replaces(spkg); k; k = k->next) { const char *replacement = k->data; pmpkg_t *lpkg = _alpm_db_get_pkgfromcache(db_local, replacement); if(!lpkg) { continue; } _alpm_log(PM_LOG_DEBUG, "checking replacement '%s' for package '%s'\n", replacement, spkg->name); /* ignore if EITHER the local or replacement package are to be ignored */ if(_alpm_pkg_should_ignore(spkg) || _alpm_pkg_should_ignore(lpkg)) { _alpm_log(PM_LOG_WARNING, _("%s-%s: ignoring package upgrade (to be replaced by %s-%s)\n"), alpm_pkg_get_name(lpkg), alpm_pkg_get_version(lpkg), alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg)); } else { /* get confirmation for the replacement */ if(trans) { int doreplace = 0; QUESTION(trans, PM_TRANS_CONV_REPLACE_PKG, lpkg, spkg, db->treename, &doreplace); if(!doreplace) { continue; } } /* if confirmed, add this to the 'final' list, designating 'lpkg' as * the package to replace. */ pmsyncpkg_t *sync; /* check if spkg->name is already in the packages list. */ /* TODO: same package name doesn't mean same package */ sync = _alpm_sync_find(*syncpkgs, alpm_pkg_get_name(spkg)); if(sync) { /* found it -- just append to the removes list */ sync->removes = alpm_list_add(sync->removes, lpkg); /* check the to-be-replaced package's reason field */ if(lpkg->reason == PM_PKG_REASON_EXPLICIT) { sync->newreason = PM_PKG_REASON_EXPLICIT; } } else { /* none found -- enter pkg into the final sync list */ /* copy over reason */ sync = _alpm_sync_new(alpm_pkg_get_reason(lpkg), spkg, NULL); if(sync == NULL) { pm_errno = PM_ERR_MEMORY; alpm_list_free_inner(*syncpkgs, (alpm_list_fn_free)_alpm_sync_free); alpm_list_free(*syncpkgs); *syncpkgs = NULL; return(-1); } sync->removes = alpm_list_add(NULL, lpkg); _alpm_log(PM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n", alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg)); *syncpkgs = alpm_list_add(*syncpkgs, sync); } _alpm_log(PM_LOG_DEBUG, "%s-%s elected for removal (to be replaced by %s-%s)\n", alpm_pkg_get_name(lpkg), alpm_pkg_get_version(lpkg), alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg)); } } } } return(0); } /** Check for new version of pkg in sync repos * (only the first occurrence is considered in sync) */ pmpkg_t SYMEXPORT *alpm_sync_newversion(pmpkg_t *pkg, alpm_list_t *dbs_sync) { alpm_list_t *i; pmpkg_t *spkg = NULL; int cmp; for(i = dbs_sync; !spkg && i; i = i->next) { spkg = _alpm_db_get_pkgfromcache(i->data, alpm_pkg_get_name(pkg)); } if(spkg == NULL) { _alpm_log(PM_LOG_DEBUG, "'%s' not found in sync db => no upgrade\n", alpm_pkg_get_name(pkg)); return(NULL); } /* compare versions and see if spkg is an upgrade */ cmp = _alpm_pkg_compare_versions(spkg, pkg); if(cmp > 0) { _alpm_log(PM_LOG_DEBUG, "new version of '%s' found (%s => %s)\n", alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg), alpm_pkg_get_version(spkg)); return(spkg); } if (cmp < 0) { pmdb_t *db = spkg->origin_data.db; _alpm_log(PM_LOG_WARNING, _("%s: local (%s) is newer than %s (%s)\n"), alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg), alpm_db_get_name(db), alpm_pkg_get_version(spkg)); } return(NULL); } /** Get a list of upgradable packages on the current system * Adds out of date packages to *list. * @arg list pointer to a list of pmsyncpkg_t. */ int SYMEXPORT alpm_sync_sysupgrade(pmdb_t *db_local, alpm_list_t *dbs_sync, alpm_list_t **syncpkgs) { return(_alpm_sync_sysupgrade(NULL, db_local, dbs_sync, syncpkgs)); } int _alpm_sync_sysupgrade(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, alpm_list_t **syncpkgs) { alpm_list_t *i, *j, *replaced = NULL; ALPM_LOG_FUNC; if(syncpkgs == NULL) { return(-1); } /* check for "recommended" package replacements */ if(find_replacements(trans, db_local, dbs_sync, syncpkgs)) { return(-1); } /* compute the to-be-replaced packages for efficiency */ for(i = *syncpkgs; i; i = i->next) { pmsyncpkg_t *sync = i->data; for(j = sync->removes; j; j = j->next) { replaced = alpm_list_add(replaced, j->data); } } /* for all not-replaced local package we check for upgrade */ _alpm_log(PM_LOG_DEBUG, "checking for package upgrades\n"); for(i = _alpm_db_get_pkgcache(db_local); i; i = i->next) { pmpkg_t *local = i->data; if(_alpm_pkg_find(replaced, alpm_pkg_get_name(local))) { _alpm_log(PM_LOG_DEBUG, "'%s' is already elected for removal -- skipping\n", alpm_pkg_get_name(local)); continue; } pmpkg_t *spkg = alpm_sync_newversion(local, dbs_sync); if(spkg) { /* we found a new version */ /* skip packages in IgnorePkg or in IgnoreGroup */ if(_alpm_pkg_should_ignore(spkg)) { _alpm_log(PM_LOG_WARNING, _("%s: ignoring package upgrade (%s => %s)\n"), alpm_pkg_get_name(local), alpm_pkg_get_version(local), alpm_pkg_get_version(spkg)); continue; } /* add the upgrade package to our pmsyncpkg_t list */ if(_alpm_sync_find(*syncpkgs, alpm_pkg_get_name(spkg))) { /* avoid duplicated targets */ continue; } /* we can set any reason here, it will be overridden by add_commit */ pmsyncpkg_t *sync = _alpm_sync_new(PM_PKG_REASON_EXPLICIT, spkg, NULL); if(sync == NULL) { alpm_list_free_inner(*syncpkgs, (alpm_list_fn_free)_alpm_sync_free); alpm_list_free(*syncpkgs); *syncpkgs = NULL; alpm_list_free(replaced); return(-1); } _alpm_log(PM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n", alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg)); *syncpkgs = alpm_list_add(*syncpkgs, sync); } } alpm_list_free(replaced); return(0); } int _alpm_sync_addtarget(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, char *name) { char *targline; char *targ; alpm_list_t *j; pmpkg_t *local, *spkg; pmdepend_t *dep; /* provisions and dependencies are also allowed */ ALPM_LOG_FUNC; ASSERT(db_local != NULL, RET_ERR(PM_ERR_DB_NULL, -1)); ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); ASSERT(name != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1)); STRDUP(targline, name, RET_ERR(PM_ERR_MEMORY, -1)); targ = strchr(targline, '/'); if(targ) { /* we are looking for a package in a specific database */ alpm_list_t *dbs = NULL; *targ = '\0'; targ++; _alpm_log(PM_LOG_DEBUG, "searching for target '%s' in repo '%s'\n", targ, targline); for(j = dbs_sync; j; j = j->next) { pmdb_t *db = j->data; if(strcmp(db->treename, targline) == 0) { dbs = alpm_list_add(NULL, db); break; } } if(dbs == NULL) { _alpm_log(PM_LOG_ERROR, _("repository '%s' not found\n"), targline); FREE(targline); RET_ERR(PM_ERR_PKG_REPO_NOT_FOUND, -1); } dep = _alpm_splitdep(targ); spkg = _alpm_resolvedep(dep, dbs, NULL, NULL); _alpm_dep_free(dep); alpm_list_free(dbs); } else { dep = _alpm_splitdep(targline); spkg = _alpm_resolvedep(dep, dbs_sync, NULL, NULL); _alpm_dep_free(dep); } FREE(targline); if(spkg == NULL) { RET_ERR(PM_ERR_PKG_NOT_FOUND, -1); } if(_alpm_sync_find(trans->packages, alpm_pkg_get_name(spkg))) { RET_ERR(PM_ERR_TRANS_DUP_TARGET, -1); } local = _alpm_db_get_pkgfromcache(db_local, alpm_pkg_get_name(spkg)); if(local) { int cmp = _alpm_pkg_compare_versions(spkg, local); if(cmp == 0) { if(trans->flags & PM_TRANS_FLAG_NEEDED) { /* with the NEEDED flag, packages up to date are not reinstalled */ _alpm_log(PM_LOG_WARNING, _("%s-%s is up to date -- skipping\n"), alpm_pkg_get_name(local), alpm_pkg_get_version(local)); return(0); } else { _alpm_log(PM_LOG_WARNING, _("%s-%s is up to date -- reinstalling\n"), alpm_pkg_get_name(local), alpm_pkg_get_version(local)); } } else if(cmp < 0) { /* local version is newer */ _alpm_log(PM_LOG_WARNING, _("downgrading package %s (%s => %s)\n"), alpm_pkg_get_name(local), alpm_pkg_get_version(local), alpm_pkg_get_version(spkg)); } } /* add the package to the transaction */ pmsyncpkg_t *sync = _alpm_sync_new(PM_PKG_REASON_EXPLICIT, spkg, NULL); if(sync == NULL) { return(-1); } _alpm_log(PM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n", alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg)); trans->packages = alpm_list_add(trans->packages, sync); return(0); } /* Helper functions for alpm_list_remove */ static int syncpkg_cmp(const void *s1, const void *s2) { const pmsyncpkg_t *sp1 = s1; const pmsyncpkg_t *sp2 = s2; pmpkg_t *p1 = alpm_sync_get_pkg(sp1); pmpkg_t *p2 = alpm_sync_get_pkg(sp2); return(strcmp(alpm_pkg_get_name(p1), alpm_pkg_get_name(p2))); } /** Compute the size of the files that will be downloaded to install a * package. * @param newpkg the new package to upgrade to */ static int compute_download_size(pmpkg_t *newpkg) { const char *fname; char *fpath; off_t size = 0; fname = alpm_pkg_get_filename(newpkg); ASSERT(fname != NULL, RET_ERR(PM_ERR_PKG_INVALID_NAME, -1)); fpath = _alpm_filecache_find(fname); if(fpath) { FREE(fpath); size = 0; } else if(handle->usedelta) { off_t dltsize; off_t pkgsize = alpm_pkg_get_size(newpkg); dltsize = _alpm_shortest_delta_path( alpm_pkg_get_deltas(newpkg), alpm_pkg_get_filename(newpkg), alpm_pkg_get_md5sum(newpkg), &newpkg->delta_path); if(newpkg->delta_path && (dltsize < pkgsize * MAX_DELTA_RATIO)) { _alpm_log(PM_LOG_DEBUG, "using delta size\n"); size = dltsize; } else { _alpm_log(PM_LOG_DEBUG, "using package size\n"); size = alpm_pkg_get_size(newpkg); alpm_list_free(newpkg->delta_path); newpkg->delta_path = NULL; } } else { size = alpm_pkg_get_size(newpkg); } _alpm_log(PM_LOG_DEBUG, "setting download size %lld for pkg %s\n", (long long)size, alpm_pkg_get_name(newpkg)); newpkg->download_size = size; return(0); } int _alpm_sync_prepare(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, alpm_list_t **data) { alpm_list_t *deps = NULL; alpm_list_t *list = NULL, *remove = NULL; /* allow checkdeps usage with trans->packages */ alpm_list_t *i, *j; int ret = 0; ALPM_LOG_FUNC; ASSERT(db_local != NULL, RET_ERR(PM_ERR_DB_NULL, -1)); ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); if(data) { *data = NULL; } for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; list = alpm_list_add(list, sync->pkg); } if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) { /* store a pointer to the last original target so we can tell what was * pulled by resolvedeps */ alpm_list_t *pulled = alpm_list_last(list); /* Resolve targets dependencies */ EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_START, NULL, NULL); _alpm_log(PM_LOG_DEBUG, "resolving target's dependencies\n"); /* build remove list for resolvedeps */ for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; for(j = sync->removes; j; j = j->next) { remove = alpm_list_add(remove, j->data); } } if(_alpm_resolvedeps(db_local, dbs_sync, list, remove, data) == -1) { /* pm_errno is set by resolvedeps */ ret = -1; goto cleanup; } for(i = pulled->next; i; i = i->next) { pmpkg_t *spkg = i->data; pmsyncpkg_t *sync = _alpm_sync_new(PM_PKG_REASON_DEPEND, spkg, NULL); if(sync == NULL) { ret = -1; goto cleanup; } trans->packages = alpm_list_add(trans->packages, sync); _alpm_log(PM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n", alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg)); } /* re-order w.r.t. dependencies */ alpm_list_t *sortlist = _alpm_sortbydeps(list, 0); alpm_list_t *newpkgs = NULL; for(i = sortlist; i; i = i->next) { for(j = trans->packages; j; j = j->next) { pmsyncpkg_t *s = j->data; if(s->pkg == i->data) { newpkgs = alpm_list_add(newpkgs, s); break; } } } alpm_list_free(sortlist); alpm_list_free(trans->packages); trans->packages = newpkgs; EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_DONE, NULL, NULL); } /* We don't care about conflicts if we're just printing uris */ if(!(trans->flags & (PM_TRANS_FLAG_NOCONFLICTS | PM_TRANS_FLAG_PRINTURIS))) { /* check for inter-conflicts and whatnot */ EVENT(trans, PM_TRANS_EVT_INTERCONFLICTS_START, NULL, NULL); _alpm_log(PM_LOG_DEBUG, "looking for conflicts\n"); /* 1. check for conflicts in the target list */ _alpm_log(PM_LOG_DEBUG, "check targets vs targets\n"); deps = _alpm_innerconflicts(list); for(i = deps; i; i = i->next) { pmconflict_t *conflict = i->data; pmsyncpkg_t *rsync, *sync, *sync1, *sync2; /* have we already removed one of the conflicting targets? */ sync1 = _alpm_sync_find(trans->packages, conflict->package1); sync2 = _alpm_sync_find(trans->packages, conflict->package2); if(!sync1 || !sync2) { continue; } _alpm_log(PM_LOG_DEBUG, "conflicting packages in the sync list: '%s' <-> '%s'\n", conflict->package1, conflict->package2); /* if sync1 provides sync2, we remove sync2 from the targets, and vice versa */ pmdepend_t *dep1 = _alpm_splitdep(conflict->package1); pmdepend_t *dep2 = _alpm_splitdep(conflict->package2); if(alpm_depcmp(sync1->pkg, dep2)) { rsync = sync2; sync = sync1; } else if(alpm_depcmp(sync2->pkg, dep1)) { rsync = sync1; sync = sync2; } else { _alpm_log(PM_LOG_ERROR, _("unresolvable package conflicts detected\n")); pm_errno = PM_ERR_CONFLICTING_DEPS; ret = -1; if(data) { pmconflict_t *newconflict = _alpm_conflict_dup(conflict); if(newconflict) { *data = alpm_list_add(*data, newconflict); } } alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_conflict_free); alpm_list_free(deps); _alpm_dep_free(dep1); _alpm_dep_free(dep2); goto cleanup; } _alpm_dep_free(dep1); _alpm_dep_free(dep2); /* Prints warning */ _alpm_log(PM_LOG_WARNING, _("removing '%s' from target list because it conflicts with '%s'\n"), rsync->pkg->name, sync->pkg->name); void *vpkg; trans->packages = alpm_list_remove(trans->packages, rsync, syncpkg_cmp, &vpkg); pmsyncpkg_t *syncpkg = vpkg; list = alpm_list_remove(list, syncpkg->pkg, _alpm_pkg_cmp, NULL); _alpm_sync_free(syncpkg); continue; } alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_conflict_free); alpm_list_free(deps); deps = NULL; /* 2. we check for target vs db conflicts (and resolve)*/ _alpm_log(PM_LOG_DEBUG, "check targets vs db and db vs targets\n"); deps = _alpm_outerconflicts(db_local, list); for(i = deps; i; i = i->next) { pmconflict_t *conflict = i->data; /* if conflict->package2 (the local package) is not elected for removal, we ask the user */ int found = 0; for(j = trans->packages; j && !found; j = j->next) { pmsyncpkg_t *sync = j->data; if(_alpm_pkg_find(sync->removes, conflict->package2)) { found = 1; } } if(found) { continue; } _alpm_log(PM_LOG_DEBUG, "package '%s' conflicts with '%s'\n", conflict->package1, conflict->package2); pmsyncpkg_t *sync = _alpm_sync_find(trans->packages, conflict->package1); pmpkg_t *local = _alpm_db_get_pkgfromcache(db_local, conflict->package2); int doremove = 0; QUESTION(trans, PM_TRANS_CONV_CONFLICT_PKG, conflict->package1, conflict->package2, NULL, &doremove); if(doremove) { /* append to the removes list */ _alpm_log(PM_LOG_DEBUG, "electing '%s' for removal\n", conflict->package2); sync->removes = alpm_list_add(sync->removes, local); } else { /* abort */ _alpm_log(PM_LOG_ERROR, _("unresolvable package conflicts detected\n")); pm_errno = PM_ERR_CONFLICTING_DEPS; ret = -1; if(data) { pmconflict_t *newconflict = _alpm_conflict_dup(conflict); if(newconflict) { *data = alpm_list_add(*data, newconflict); } } alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_conflict_free); alpm_list_free(deps); goto cleanup; } } EVENT(trans, PM_TRANS_EVT_INTERCONFLICTS_DONE, NULL, NULL); alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_conflict_free); alpm_list_free(deps); } if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) { /* rebuild remove list */ alpm_list_free(remove); remove = NULL; for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; for(j = sync->removes; j; j = j->next) { remove = alpm_list_add(remove, j->data); } } _alpm_log(PM_LOG_DEBUG, "checking dependencies\n"); deps = alpm_checkdeps(db_local, 1, remove, list); if(deps) { pm_errno = PM_ERR_UNSATISFIED_DEPS; ret = -1; if(data) { *data = deps; } else { alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_depmiss_free); alpm_list_free(deps); } goto cleanup; } } for(i = list; i; i = i->next) { /* update download size field */ pmpkg_t *spkg = i->data; if(compute_download_size(spkg) != 0) { ret = -1; goto cleanup; } } cleanup: alpm_list_free(list); alpm_list_free(remove); return(ret); } /** Returns the size of the files that will be downloaded to install a * package. * @param newpkg the new package to upgrade to * @return the size of the download */ off_t SYMEXPORT alpm_pkg_download_size(pmpkg_t *newpkg) { return(newpkg->download_size); } /** Applies delta files to create an upgraded package file. * * All intermediate files are deleted, leaving only the starting and * ending package files. * * @param trans the transaction * * @return 0 if all delta files were able to be applied, 1 otherwise. */ static int apply_deltas(pmtrans_t *trans) { alpm_list_t *i; int ret = 0; const char *cachedir = _alpm_filecache_setup(); for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; pmpkg_t *spkg = sync->pkg; alpm_list_t *delta_path = spkg->delta_path; alpm_list_t *dlts = NULL; if(!delta_path) { continue; } for(dlts = delta_path; dlts; dlts = dlts->next) { pmdelta_t *d = dlts->data; char *delta, *from, *to; char command[PATH_MAX]; int len = 0; delta = _alpm_filecache_find(d->delta); /* the initial package might be in a different cachedir */ if(dlts == delta_path) { from = _alpm_filecache_find(d->from); } else { /* len = cachedir len + from len + '/' + null */ len = strlen(cachedir) + strlen(d->from) + 2; CALLOC(from, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, 1)); snprintf(from, len, "%s/%s", cachedir, d->from); } len = strlen(cachedir) + strlen(d->to) + 2; CALLOC(to, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, 1)); snprintf(to, len, "%s/%s", cachedir, d->to); /* an example of the patch command: (using /cache for cachedir) * xdelta patch /path/to/pacman_3.0.0-1_to_3.0.1-1-i686.delta \ * /path/to/pacman-3.0.0-1-i686.pkg.tar.gz \ * /cache/pacman-3.0.1-1-i686.pkg.tar.gz */ /* build the patch command */ snprintf(command, PATH_MAX, "xdelta patch %s %s %s", delta, from, to); _alpm_log(PM_LOG_DEBUG, _("command: %s\n"), command); EVENT(trans, PM_TRANS_EVT_DELTA_PATCH_START, d->to, d->delta); int retval = system(command); if(retval == 0) { EVENT(trans, PM_TRANS_EVT_DELTA_PATCH_DONE, NULL, NULL); /* delete the delta file */ unlink(delta); /* Delete the 'from' package but only if it is an intermediate * package. The starting 'from' package should be kept, just * as if deltas were not used. */ if(dlts != delta_path) { unlink(from); } } FREE(from); FREE(to); FREE(delta); if(retval != 0) { /* one delta failed for this package, cancel the remaining ones */ EVENT(trans, PM_TRANS_EVT_DELTA_PATCH_FAILED, NULL, NULL); ret = 1; break; } } } return(ret); } /** Compares the md5sum of a file to the expected value. * * If the md5sum does not match, the user is asked whether the file * should be deleted. * * @param trans the transaction * @param filename the filename of the file to test * @param md5sum the expected md5sum of the file * * @return 0 if the md5sum matched, 1 if not, -1 in case of errors */ static int test_md5sum(pmtrans_t *trans, const char *filename, const char *md5sum) { char *filepath; int ret; filepath = _alpm_filecache_find(filename); ret = _alpm_test_md5sum(filepath, md5sum); if(ret == 1) { int doremove = 0; QUESTION(trans, PM_TRANS_CONV_CORRUPTED_PKG, (char *)filename, NULL, NULL, &doremove); if(doremove) { unlink(filepath); } } FREE(filepath); return(ret); } int _alpm_sync_commit(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t **data) { alpm_list_t *i, *j, *files = NULL; alpm_list_t *deltas = NULL; pmtrans_t *tr = NULL; int replaces = 0; int errors = 0; const char *cachedir = NULL; int ret = -1; ALPM_LOG_FUNC; ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); cachedir = _alpm_filecache_setup(); trans->state = STATE_DOWNLOADING; /* Total progress - figure out the total download size if required to * pass to the callback. This function is called once, and it is up to the * frontend to compute incremental progress. */ if(handle->totaldlcb) { off_t total_size = (off_t)0; /* sum up the download size for each package and store total */ for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; pmpkg_t *spkg = sync->pkg; total_size += spkg->download_size; } handle->totaldlcb(total_size); } /* group sync records by repository and download */ for(i = handle->dbs_sync; i; i = i->next) { pmdb_t *current = i->data; for(j = trans->packages; j; j = j->next) { pmsyncpkg_t *sync = j->data; pmpkg_t *spkg = sync->pkg; pmdb_t *dbs = spkg->origin_data.db; if(current == dbs) { const char *fname = NULL; fname = alpm_pkg_get_filename(spkg); ASSERT(fname != NULL, RET_ERR(PM_ERR_PKG_INVALID_NAME, -1)); if(trans->flags & PM_TRANS_FLAG_PRINTURIS) { EVENT(trans, PM_TRANS_EVT_PRINTURI, (char *)alpm_db_get_url(current), (char *)fname); } else { if(spkg->download_size != 0) { alpm_list_t *delta_path = spkg->delta_path; if(delta_path) { alpm_list_t *dlts = NULL; for(dlts = delta_path; dlts; dlts = dlts->next) { pmdelta_t *d = dlts->data; if(d->download_size != 0) { /* add the delta filename to the download list if * it's not in the cache */ files = alpm_list_add(files, strdup(d->delta)); } /* keep a list of the delta files for md5sums */ deltas = alpm_list_add(deltas, d); } } else { /* not using deltas, so add the file to the download list */ files = alpm_list_add(files, strdup(fname)); } } } } } if(files) { EVENT(trans, PM_TRANS_EVT_RETRIEVE_START, current->treename, NULL); if(_alpm_download_files(files, current->servers, cachedir)) { _alpm_log(PM_LOG_WARNING, _("failed to retrieve some files from %s\n"), current->treename); pm_errno = PM_ERR_RETRIEVE; goto error; } FREELIST(files); } } if(trans->flags & PM_TRANS_FLAG_PRINTURIS) { return(0); } /* clear out value to let callback know we are done */ if(handle->totaldlcb) { handle->totaldlcb(0); } if(handle->usedelta) { int ret = 0; /* only output if there are deltas to work with */ if(deltas) { errors = 0; /* Check integrity of deltas */ EVENT(trans, PM_TRANS_EVT_DELTA_INTEGRITY_START, NULL, NULL); for(i = deltas; i; i = i->next) { pmdelta_t *d = alpm_list_getdata(i); const char *filename = alpm_delta_get_filename(d); const char *md5sum = alpm_delta_get_md5sum(d); if(test_md5sum(trans, filename, md5sum) != 0) { errors++; *data = alpm_list_add(*data, strdup(filename)); } } if(errors) { pm_errno = PM_ERR_DLT_INVALID; goto error; } EVENT(trans, PM_TRANS_EVT_DELTA_INTEGRITY_DONE, NULL, NULL); /* Use the deltas to generate the packages */ EVENT(trans, PM_TRANS_EVT_DELTA_PATCHES_START, NULL, NULL); ret = apply_deltas(trans); EVENT(trans, PM_TRANS_EVT_DELTA_PATCHES_DONE, NULL, NULL); } if(ret) { pm_errno = PM_ERR_DLT_PATCHFAILED; goto error; } } /* Check integrity of packages */ EVENT(trans, PM_TRANS_EVT_INTEGRITY_START, NULL, NULL); errors = 0; for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; pmpkg_t *spkg = sync->pkg; const char *filename = alpm_pkg_get_filename(spkg); const char *md5sum = alpm_pkg_get_md5sum(spkg); if(test_md5sum(trans, filename, md5sum) != 0) { errors++; *data = alpm_list_add(*data, strdup(filename)); } } if(errors) { pm_errno = PM_ERR_PKG_INVALID; goto error; } EVENT(trans, PM_TRANS_EVT_INTEGRITY_DONE, NULL, NULL); if(trans->flags & PM_TRANS_FLAG_DOWNLOADONLY) { return(0); } /* remove conflicting and to-be-replaced packages */ trans->state = STATE_COMMITING; tr = _alpm_trans_new(); if(tr == NULL) { _alpm_log(PM_LOG_ERROR, _("could not create removal transaction\n")); goto error; } if(_alpm_trans_init(tr, PM_TRANS_TYPE_REMOVE, PM_TRANS_FLAG_NODEPS, NULL, NULL, NULL) == -1) { _alpm_log(PM_LOG_ERROR, _("could not initialize the removal transaction\n")); goto error; } for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; alpm_list_t *j; for(j = sync->removes; j; j = j->next) { pmpkg_t *pkg = j->data; if(!_alpm_pkg_find(tr->packages, pkg->name)) { if(_alpm_trans_addtarget(tr, pkg->name) == -1) { goto error; } replaces++; } } } if(replaces) { _alpm_log(PM_LOG_DEBUG, "removing conflicting and to-be-replaced packages\n"); if(_alpm_trans_prepare(tr, data) == -1) { _alpm_log(PM_LOG_ERROR, _("could not prepare removal transaction\n")); goto error; } /* we want the frontend to be aware of commit details */ tr->cb_event = trans->cb_event; if(_alpm_trans_commit(tr, NULL) == -1) { _alpm_log(PM_LOG_ERROR, _("could not commit removal transaction\n")); goto error; } } _alpm_trans_free(tr); tr = NULL; /* install targets */ _alpm_log(PM_LOG_DEBUG, "installing packages\n"); tr = _alpm_trans_new(); if(tr == NULL) { _alpm_log(PM_LOG_ERROR, _("could not create transaction\n")); goto error; } if(_alpm_trans_init(tr, PM_TRANS_TYPE_UPGRADE, trans->flags | PM_TRANS_FLAG_NODEPS, trans->cb_event, trans->cb_conv, trans->cb_progress) == -1) { _alpm_log(PM_LOG_ERROR, _("could not initialize transaction\n")); goto error; } for(i = trans->packages; i; i = i->next) { pmsyncpkg_t *sync = i->data; pmpkg_t *spkg = sync->pkg; const char *fname; char *fpath; fname = alpm_pkg_get_filename(spkg); if(fname == NULL) { goto error; } /* Loop through the cache dirs until we find a matching file */ fpath = _alpm_filecache_find(fname); if(_alpm_trans_addtarget(tr, fpath) == -1) { FREE(fpath); goto error; } FREE(fpath); /* using alpm_list_last() is ok because addtarget() adds the new target at the * end of the tr->packages list */ spkg = alpm_list_last(tr->packages)->data; spkg->reason = sync->newreason; } if(_alpm_trans_prepare(tr, data) == -1) { _alpm_log(PM_LOG_ERROR, _("could not prepare transaction\n")); /* pm_errno is set by trans_prepare */ goto error; } if(_alpm_trans_commit(tr, NULL) == -1) { _alpm_log(PM_LOG_ERROR, _("could not commit transaction\n")); goto error; } ret = 0; error: FREELIST(files); alpm_list_free(deltas); deltas = NULL; _alpm_trans_free(tr); tr = NULL; return(ret); } pmsyncpkg_t *_alpm_sync_find(alpm_list_t *syncpkgs, const char* pkgname) { alpm_list_t *i; for(i = syncpkgs; i; i = i->next) { pmsyncpkg_t *syncpkg = i->data; if(!syncpkg) { continue; } pmpkg_t *pkg = alpm_sync_get_pkg(syncpkg); if(strcmp(alpm_pkg_get_name(pkg), pkgname) == 0) { return(syncpkg); } } return(NULL); /* not found */ } pmpkg_t SYMEXPORT *alpm_sync_get_pkg(const pmsyncpkg_t *sync) { /* Sanity checks */ ASSERT(sync != NULL, return(NULL)); return sync->pkg; } alpm_list_t SYMEXPORT *alpm_sync_get_removes(const pmsyncpkg_t *sync) { /* Sanity checks */ ASSERT(sync != NULL, return(NULL)); return sync->removes; } /* vim: set ts=2 sw=2 noet: */