/* * sync.c * * Copyright (c) 2006-2012 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 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 <sys/types.h> /* off_t */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <stdint.h> /* intmax_t */ #include <unistd.h> #include <limits.h> /* libalpm */ #include "sync.h" #include "alpm_list.h" #include "log.h" #include "package.h" #include "db.h" #include "deps.h" #include "conflict.h" #include "trans.h" #include "add.h" #include "util.h" #include "handle.h" #include "alpm.h" #include "dload.h" #include "delta.h" #include "remove.h" #include "diskspace.h" #include "signing.h" /** Check for new version of pkg in sync repos * (only the first occurrence is considered in sync) */ alpm_pkg_t SYMEXPORT *alpm_sync_newversion(alpm_pkg_t *pkg, alpm_list_t *dbs_sync) { alpm_list_t *i; alpm_pkg_t *spkg = NULL; ASSERT(pkg != NULL, return NULL); pkg->handle->pm_errno = 0; for(i = dbs_sync; !spkg && i; i = i->next) { spkg = _alpm_db_get_pkgfromcache(i->data, pkg->name); } if(spkg == NULL) { _alpm_log(pkg->handle, ALPM_LOG_DEBUG, "'%s' not found in sync db => no upgrade\n", pkg->name); return NULL; } /* compare versions and see if spkg is an upgrade */ if(_alpm_pkg_compare_versions(spkg, pkg) > 0) { _alpm_log(pkg->handle, ALPM_LOG_DEBUG, "new version of '%s' found (%s => %s)\n", pkg->name, pkg->version, spkg->version); return spkg; } /* spkg is not an upgrade */ return NULL; } static int check_literal(alpm_handle_t *handle, alpm_pkg_t *lpkg, alpm_pkg_t *spkg, int enable_downgrade) { /* 1. literal was found in sdb */ int cmp = _alpm_pkg_compare_versions(spkg, lpkg); if(cmp > 0) { _alpm_log(handle, ALPM_LOG_DEBUG, "new version of '%s' found (%s => %s)\n", lpkg->name, lpkg->version, spkg->version); /* check IgnorePkg/IgnoreGroup */ if(_alpm_pkg_should_ignore(handle, spkg) || _alpm_pkg_should_ignore(handle, lpkg)) { _alpm_log(handle, ALPM_LOG_WARNING, _("%s: ignoring package upgrade (%s => %s)\n"), lpkg->name, lpkg->version, spkg->version); } else { _alpm_log(handle, ALPM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n", spkg->name, spkg->version); return 1; } } else if(cmp < 0) { if(enable_downgrade) { /* check IgnorePkg/IgnoreGroup */ if(_alpm_pkg_should_ignore(handle, spkg) || _alpm_pkg_should_ignore(handle, lpkg)) { _alpm_log(handle, ALPM_LOG_WARNING, _("%s: ignoring package downgrade (%s => %s)\n"), lpkg->name, lpkg->version, spkg->version); } else { _alpm_log(handle, ALPM_LOG_WARNING, _("%s: downgrading from version %s to version %s\n"), lpkg->name, lpkg->version, spkg->version); return 1; } } else { alpm_db_t *sdb = alpm_pkg_get_db(spkg); _alpm_log(handle, ALPM_LOG_WARNING, _("%s: local (%s) is newer than %s (%s)\n"), lpkg->name, lpkg->version, sdb->treename, spkg->version); } } return 0; } static alpm_list_t *check_replacers(alpm_handle_t *handle, alpm_pkg_t *lpkg, alpm_db_t *sdb) { /* 2. search for replacers in sdb */ alpm_list_t *replacers = NULL; alpm_list_t *k; _alpm_log(handle, ALPM_LOG_DEBUG, "searching for replacements for %s\n", lpkg->name); for(k = _alpm_db_get_pkgcache(sdb); k; k = k->next) { int found = 0; alpm_pkg_t *spkg = k->data; alpm_list_t *l; for(l = alpm_pkg_get_replaces(spkg); l; l = l->next) { alpm_depend_t *replace = l->data; /* we only want to consider literal matches at this point. */ if(_alpm_depcmp_literal(lpkg, replace)) { found = 1; break; } } if(found) { int doreplace = 0; alpm_pkg_t *tpkg; /* check IgnorePkg/IgnoreGroup */ if(_alpm_pkg_should_ignore(handle, spkg) || _alpm_pkg_should_ignore(handle, lpkg)) { _alpm_log(handle, ALPM_LOG_WARNING, _("ignoring package replacement (%s-%s => %s-%s)\n"), lpkg->name, lpkg->version, spkg->name, spkg->version); continue; } QUESTION(handle, ALPM_QUESTION_REPLACE_PKG, lpkg, spkg, sdb->treename, &doreplace); if(!doreplace) { continue; } /* If spkg is already in the target list, we append lpkg to spkg's * removes list */ tpkg = _alpm_pkg_find(handle->trans->add, spkg->name); if(tpkg) { /* sanity check, multiple repos can contain spkg->name */ if(tpkg->origin_data.db != sdb) { _alpm_log(handle, ALPM_LOG_WARNING, _("cannot replace %s by %s\n"), lpkg->name, spkg->name); continue; } _alpm_log(handle, ALPM_LOG_DEBUG, "appending %s to the removes list of %s\n", lpkg->name, tpkg->name); tpkg->removes = alpm_list_add(tpkg->removes, lpkg); /* check the to-be-replaced package's reason field */ if(alpm_pkg_get_reason(lpkg) == ALPM_PKG_REASON_EXPLICIT) { tpkg->reason = ALPM_PKG_REASON_EXPLICIT; } } else { /* add spkg to the target list */ /* copy over reason */ spkg->reason = alpm_pkg_get_reason(lpkg); spkg->removes = alpm_list_add(NULL, lpkg); _alpm_log(handle, ALPM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n", spkg->name, spkg->version); replacers = alpm_list_add(replacers, spkg); } } } return replacers; } /** Search for packages to upgrade and add them to the transaction. */ int SYMEXPORT alpm_sync_sysupgrade(alpm_handle_t *handle, int enable_downgrade) { alpm_list_t *i, *j; alpm_trans_t *trans; CHECK_HANDLE(handle, return -1); trans = handle->trans; ASSERT(trans != NULL, RET_ERR(handle, ALPM_ERR_TRANS_NULL, -1)); ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(handle, ALPM_ERR_TRANS_NOT_INITIALIZED, -1)); _alpm_log(handle, ALPM_LOG_DEBUG, "checking for package upgrades\n"); for(i = _alpm_db_get_pkgcache(handle->db_local); i; i = i->next) { alpm_pkg_t *lpkg = i->data; if(_alpm_pkg_find(trans->add, lpkg->name)) { _alpm_log(handle, ALPM_LOG_DEBUG, "%s is already in the target list -- skipping\n", lpkg->name); continue; } /* Search for literal then replacers in each sync database. */ for(j = handle->dbs_sync; j; j = j->next) { alpm_db_t *sdb = j->data; /* Check sdb */ alpm_pkg_t *spkg = _alpm_db_get_pkgfromcache(sdb, lpkg->name); int literal_upgrade = 0; if(spkg) { literal_upgrade = check_literal(handle, lpkg, spkg, enable_downgrade); if(literal_upgrade) { trans->add = alpm_list_add(trans->add, spkg); } /* jump to next local package */ break; } else { alpm_list_t *replacers; replacers = check_replacers(handle, lpkg, sdb); if(replacers) { trans->add = alpm_list_join(trans->add, replacers); } } } } return 0; } /** Find group members across a list of databases. * If a member exists in several databases, only the first database is used. * IgnorePkg is also handled. * @param dbs the list of alpm_db_t * * @param name the name of the group * @return the list of alpm_pkg_t * (caller is responsible for alpm_list_free) */ alpm_list_t SYMEXPORT *alpm_find_group_pkgs(alpm_list_t *dbs, const char *name) { alpm_list_t *i, *j, *pkgs = NULL, *ignorelist = NULL; for(i = dbs; i; i = i->next) { alpm_db_t *db = i->data; alpm_group_t *grp = alpm_db_get_group(db, name); if(!grp) continue; for(j = grp->packages; j; j = j->next) { alpm_pkg_t *pkg = j->data; if(_alpm_pkg_find(ignorelist, pkg->name)) { continue; } if(_alpm_pkg_should_ignore(db->handle, pkg)) { ignorelist = alpm_list_add(ignorelist, pkg); int install = 0; QUESTION(db->handle, ALPM_QUESTION_INSTALL_IGNOREPKG, pkg, NULL, NULL, &install); if(!install) continue; } if(!_alpm_pkg_find(pkgs, pkg->name)) { pkgs = alpm_list_add(pkgs, pkg); } } } alpm_list_free(ignorelist); return pkgs; } /** 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(alpm_pkg_t *newpkg) { const char *fname; char *fpath, *fnamepart = NULL; off_t size = 0; alpm_handle_t *handle = newpkg->handle; int ret = 0; if(newpkg->origin != ALPM_PKG_FROM_SYNCDB) { newpkg->infolevel |= INFRQ_DSIZE; newpkg->download_size = 0; return 0; } ASSERT(newpkg->filename != NULL, RET_ERR(handle, ALPM_ERR_PKG_INVALID_NAME, -1)); fname = newpkg->filename; fpath = _alpm_filecache_find(handle, fname); /* downloaded file exists, so there's nothing to grab */ if(fpath) { size = 0; goto finish; } CALLOC(fnamepart, strlen(fname) + 6, sizeof(char), return -1); sprintf(fnamepart, "%s.part", fname); fpath = _alpm_filecache_find(handle, fnamepart); if(fpath) { struct stat st; if(stat(fpath, &st) == 0) { /* subtract the size of the .part file */ _alpm_log(handle, ALPM_LOG_DEBUG, "using (package - .part) size\n"); size = newpkg->size - st.st_size; size = size < 0 ? 0 : size; } /* tell the caller that we have a partial */ ret = 1; } else if(handle->deltaratio > 0.0) { off_t dltsize; dltsize = _alpm_shortest_delta_path(handle, newpkg->deltas, newpkg->filename, &newpkg->delta_path); if(newpkg->delta_path && (dltsize < newpkg->size * handle->deltaratio)) { _alpm_log(handle, ALPM_LOG_DEBUG, "using delta size\n"); size = dltsize; } else { _alpm_log(handle, ALPM_LOG_DEBUG, "using package size\n"); size = newpkg->size; alpm_list_free(newpkg->delta_path); newpkg->delta_path = NULL; } } else { size = newpkg->size; } finish: _alpm_log(handle, ALPM_LOG_DEBUG, "setting download size %jd for pkg %s\n", (intmax_t)size, newpkg->name); newpkg->infolevel |= INFRQ_DSIZE; newpkg->download_size = size; FREE(fpath); FREE(fnamepart); return ret; } int _alpm_sync_prepare(alpm_handle_t *handle, alpm_list_t **data) { alpm_list_t *i, *j; alpm_list_t *deps = NULL; alpm_list_t *unresolvable = NULL; size_t from_sync = 0; int ret = 0; alpm_trans_t *trans = handle->trans; if(data) { *data = NULL; } for(i = trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; from_sync += (spkg->origin == ALPM_PKG_FROM_SYNCDB); } /* ensure all sync database are valid if we will be using them */ for(i = handle->dbs_sync; i; i = i->next) { const alpm_db_t *db = i->data; if(db->status & DB_STATUS_INVALID) { RET_ERR(handle, ALPM_ERR_DB_INVALID, -1); } /* missing databases are not allowed if we have sync targets */ if(from_sync && db->status & DB_STATUS_MISSING) { RET_ERR(handle, ALPM_ERR_DB_NOT_FOUND, -1); } } if(!(trans->flags & ALPM_TRANS_FLAG_NODEPS)) { alpm_list_t *resolved = NULL; alpm_list_t *remove = NULL; alpm_list_t *localpkgs; /* Build up list by repeatedly resolving each transaction package */ /* Resolve targets dependencies */ EVENT(handle, ALPM_EVENT_RESOLVEDEPS_START, NULL, NULL); _alpm_log(handle, ALPM_LOG_DEBUG, "resolving target's dependencies\n"); /* build remove list for resolvedeps */ for(i = trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; for(j = spkg->removes; j; j = j->next) { remove = alpm_list_add(remove, j->data); } } /* Compute the fake local database for resolvedeps (partial fix for the * phonon/qt issue) */ localpkgs = alpm_list_diff(_alpm_db_get_pkgcache(handle->db_local), trans->add, _alpm_pkg_cmp); /* Resolve packages in the transaction one at a time, in addition building up a list of packages which could not be resolved. */ for(i = trans->add; i; i = i->next) { alpm_pkg_t *pkg = i->data; if(_alpm_resolvedeps(handle, localpkgs, pkg, trans->add, &resolved, remove, data) == -1) { unresolvable = alpm_list_add(unresolvable, pkg); } /* Else, [resolved] now additionally contains [pkg] and all of its dependencies not already on the list */ } alpm_list_free(localpkgs); alpm_list_free(remove); /* If there were unresolvable top-level packages, prompt the user to see if they'd like to ignore them rather than failing the sync */ if(unresolvable != NULL) { int remove_unresolvable = 0; alpm_errno_t saved_err = handle->pm_errno; QUESTION(handle, ALPM_QUESTION_REMOVE_PKGS, unresolvable, NULL, NULL, &remove_unresolvable); if(remove_unresolvable) { /* User wants to remove the unresolvable packages from the transaction. The packages will be removed from the actual transaction when the transaction packages are replaced with a dependency-reordered list below */ handle->pm_errno = 0; if(data) { alpm_list_free_inner(*data, (alpm_list_fn_free)_alpm_depmiss_free); alpm_list_free(*data); *data = NULL; } } else { /* pm_errno was set by resolvedeps, callback may have overwrote it */ handle->pm_errno = saved_err; alpm_list_free(resolved); ret = -1; goto cleanup; } } /* Set DEPEND reason for pulled packages */ for(i = resolved; i; i = i->next) { alpm_pkg_t *pkg = i->data; if(!_alpm_pkg_find(trans->add, pkg->name)) { pkg->reason = ALPM_PKG_REASON_DEPEND; } } /* Unresolvable packages will be removed from the target list; set these * aside in the transaction as a list we won't operate on. If we free them * before the end of the transaction, we may kill pointers the frontend * holds to package objects. */ trans->unresolvable = unresolvable; /* re-order w.r.t. dependencies */ alpm_list_free(trans->add); trans->add = _alpm_sortbydeps(handle, resolved, 0); alpm_list_free(resolved); EVENT(handle, ALPM_EVENT_RESOLVEDEPS_DONE, NULL, NULL); } if(!(trans->flags & ALPM_TRANS_FLAG_NOCONFLICTS)) { /* check for inter-conflicts and whatnot */ EVENT(handle, ALPM_EVENT_INTERCONFLICTS_START, NULL, NULL); _alpm_log(handle, ALPM_LOG_DEBUG, "looking for conflicts\n"); /* 1. check for conflicts in the target list */ _alpm_log(handle, ALPM_LOG_DEBUG, "check targets vs targets\n"); deps = _alpm_innerconflicts(handle, trans->add); for(i = deps; i; i = i->next) { alpm_conflict_t *conflict = i->data; alpm_pkg_t *rsync, *sync, *sync1, *sync2; /* have we already removed one of the conflicting targets? */ sync1 = _alpm_pkg_find(trans->add, conflict->package1); sync2 = _alpm_pkg_find(trans->add, conflict->package2); if(!sync1 || !sync2) { continue; } _alpm_log(handle, ALPM_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 */ alpm_depend_t *dep1 = _alpm_splitdep(conflict->package1); alpm_depend_t *dep2 = _alpm_splitdep(conflict->package2); if(_alpm_depcmp(sync1, dep2)) { rsync = sync2; sync = sync1; } else if(_alpm_depcmp(sync2, dep1)) { rsync = sync1; sync = sync2; } else { _alpm_log(handle, ALPM_LOG_ERROR, _("unresolvable package conflicts detected\n")); handle->pm_errno = ALPM_ERR_CONFLICTING_DEPS; ret = -1; if(data) { alpm_conflict_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(handle, ALPM_LOG_WARNING, _("removing '%s' from target list because it conflicts with '%s'\n"), rsync->name, sync->name); trans->add = alpm_list_remove(trans->add, rsync, _alpm_pkg_cmp, NULL); /* rsync is not a transaction target anymore */ trans->unresolvable = alpm_list_add(trans->unresolvable, rsync); 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(handle, ALPM_LOG_DEBUG, "check targets vs db and db vs targets\n"); deps = _alpm_outerconflicts(handle->db_local, trans->add); for(i = deps; i; i = i->next) { alpm_conflict_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->add; j && !found; j = j->next) { alpm_pkg_t *spkg = j->data; if(_alpm_pkg_find(spkg->removes, conflict->package2)) { found = 1; } } if(found) { continue; } _alpm_log(handle, ALPM_LOG_DEBUG, "package '%s' conflicts with '%s'\n", conflict->package1, conflict->package2); alpm_pkg_t *sync = _alpm_pkg_find(trans->add, conflict->package1); alpm_pkg_t *local = _alpm_db_get_pkgfromcache(handle->db_local, conflict->package2); int doremove = 0; QUESTION(handle, ALPM_QUESTION_CONFLICT_PKG, conflict->package1, conflict->package2, conflict->reason->name, &doremove); if(doremove) { /* append to the removes list */ _alpm_log(handle, ALPM_LOG_DEBUG, "electing '%s' for removal\n", conflict->package2); sync->removes = alpm_list_add(sync->removes, local); } else { /* abort */ _alpm_log(handle, ALPM_LOG_ERROR, _("unresolvable package conflicts detected\n")); handle->pm_errno = ALPM_ERR_CONFLICTING_DEPS; ret = -1; if(data) { alpm_conflict_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(handle, ALPM_EVENT_INTERCONFLICTS_DONE, NULL, NULL); alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_conflict_free); alpm_list_free(deps); } /* Build trans->remove list */ for(i = trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; for(j = spkg->removes; j; j = j->next) { alpm_pkg_t *rpkg = j->data; if(!_alpm_pkg_find(trans->remove, rpkg->name)) { alpm_pkg_t *copy; _alpm_log(handle, ALPM_LOG_DEBUG, "adding '%s' to remove list\n", rpkg->name); if(_alpm_pkg_dup(rpkg, ©) == -1) { return -1; } trans->remove = alpm_list_add(trans->remove, copy); } } } if(!(trans->flags & ALPM_TRANS_FLAG_NODEPS)) { _alpm_log(handle, ALPM_LOG_DEBUG, "checking dependencies\n"); deps = alpm_checkdeps(handle, _alpm_db_get_pkgcache(handle->db_local), trans->remove, trans->add, 1); if(deps) { handle->pm_errno = ALPM_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 = trans->add; i; i = i->next) { /* update download size field */ alpm_pkg_t *spkg = i->data; if(compute_download_size(spkg) < 0) { ret = -1; goto cleanup; } } cleanup: 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(alpm_pkg_t *newpkg) { if(!(newpkg->infolevel & INFRQ_DSIZE)) { compute_download_size(newpkg); } return newpkg->download_size; } static int endswith(const char *filename, const char *extension) { const char *s = filename + strlen(filename) - strlen(extension); return strcmp(s, extension) == 0; } /** Applies delta files to create an upgraded package file. * * All intermediate files are deleted, leaving only the starting and * ending package files. * * @param handle the context handle * * @return 0 if all delta files were able to be applied, 1 otherwise. */ static int apply_deltas(alpm_handle_t *handle) { alpm_list_t *i; int deltas_found = 0, ret = 0; const char *cachedir = _alpm_filecache_setup(handle); alpm_trans_t *trans = handle->trans; for(i = trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; alpm_list_t *delta_path = spkg->delta_path; alpm_list_t *dlts = NULL; if(!delta_path) { continue; } if(!deltas_found) { /* only show this if we actually have deltas to apply, and it is before * the very first one */ EVENT(handle, ALPM_EVENT_DELTA_PATCHES_START, NULL, NULL); deltas_found = 1; } for(dlts = delta_path; dlts; dlts = dlts->next) { alpm_delta_t *d = dlts->data; char *delta, *from, *to; char command[PATH_MAX]; size_t len = 0; delta = _alpm_filecache_find(handle, d->delta); /* the initial package might be in a different cachedir */ if(dlts == delta_path) { from = _alpm_filecache_find(handle, d->from); } else { /* len = cachedir len + from len + '/' + null */ len = strlen(cachedir) + strlen(d->from) + 2; MALLOC(from, len, RET_ERR(handle, ALPM_ERR_MEMORY, 1)); snprintf(from, len, "%s/%s", cachedir, d->from); } len = strlen(cachedir) + strlen(d->to) + 2; MALLOC(to, len, RET_ERR(handle, ALPM_ERR_MEMORY, 1)); snprintf(to, len, "%s/%s", cachedir, d->to); /* build the patch command */ if(endswith(to, ".gz")) { /* special handling for gzip : we disable timestamp with -n option */ snprintf(command, PATH_MAX, "xdelta3 -d -q -R -c -s %s %s | gzip -n > %s", from, delta, to); } else { snprintf(command, PATH_MAX, "xdelta3 -d -q -s %s %s %s", from, delta, to); } _alpm_log(handle, ALPM_LOG_DEBUG, "command: %s\n", command); EVENT(handle, ALPM_EVENT_DELTA_PATCH_START, d->to, d->delta); int retval = system(command); if(retval == 0) { EVENT(handle, ALPM_EVENT_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(handle, ALPM_EVENT_DELTA_PATCH_FAILED, NULL, NULL); handle->pm_errno = ALPM_ERR_DLT_PATCHFAILED; ret = 1; break; } } } if(deltas_found) { EVENT(handle, ALPM_EVENT_DELTA_PATCHES_DONE, NULL, NULL); } return ret; } /** * Prompts to delete the file now that we know it is invalid. * @param handle the context handle * @param filename the absolute path of the file to test * @param reason an error code indicating the reason for package invalidity * * @return 1 if file was removed, 0 otherwise */ static int prompt_to_delete(alpm_handle_t *handle, const char *filepath, alpm_errno_t reason) { int doremove = 0; QUESTION(handle, ALPM_QUESTION_CORRUPTED_PKG, (char *)filepath, &reason, NULL, &doremove); if(doremove) { unlink(filepath); } return doremove; } static int validate_deltas(alpm_handle_t *handle, alpm_list_t *deltas) { alpm_list_t *i, *errors = NULL; if(!deltas) { return 0; } /* Check integrity of deltas */ EVENT(handle, ALPM_EVENT_DELTA_INTEGRITY_START, NULL, NULL); for(i = deltas; i; i = i->next) { alpm_delta_t *d = i->data; char *filepath = _alpm_filecache_find(handle, d->delta); if(_alpm_test_checksum(filepath, d->delta_md5, ALPM_PKG_VALIDATION_MD5SUM)) { errors = alpm_list_add(errors, filepath); } else { FREE(filepath); } } EVENT(handle, ALPM_EVENT_DELTA_INTEGRITY_DONE, NULL, NULL); if(errors) { for(i = errors; i; i = i->next) { char *filepath = i->data; prompt_to_delete(handle, filepath, ALPM_ERR_DLT_INVALID); FREE(filepath); } alpm_list_free(errors); handle->pm_errno = ALPM_ERR_DLT_INVALID; return -1; } return 0; } static struct dload_payload *build_payload(alpm_handle_t *handle, const char *filename, size_t size, alpm_list_t *servers) { struct dload_payload *payload; CALLOC(payload, 1, sizeof(*payload), RET_ERR(handle, ALPM_ERR_MEMORY, NULL)); STRDUP(payload->remote_name, filename, RET_ERR(handle, ALPM_ERR_MEMORY, NULL)); payload->max_size = size; payload->servers = servers; return payload; } static int find_dl_candidates(alpm_db_t *repo, alpm_list_t **files, alpm_list_t **deltas) { alpm_list_t *i; alpm_handle_t *handle = repo->handle; for(i = handle->trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; if(spkg->origin != ALPM_PKG_FROM_FILE && repo == spkg->origin_data.db) { alpm_list_t *delta_path = spkg->delta_path; if(!repo->servers) { handle->pm_errno = ALPM_ERR_SERVER_NONE; _alpm_log(handle, ALPM_LOG_ERROR, "%s: %s\n", alpm_strerror(handle->pm_errno), repo->treename); return 1; } if(delta_path) { /* using deltas */ alpm_list_t *dlts; for(dlts = delta_path; dlts; dlts = dlts->next) { alpm_delta_t *delta = dlts->data; if(delta->download_size != 0) { struct dload_payload *payload = build_payload( handle, delta->delta, delta->delta_size, repo->servers); ASSERT(payload, return -1); *files = alpm_list_add(*files, payload); } /* keep a list of all the delta files for md5sums */ *deltas = alpm_list_add(*deltas, delta); } } else if(spkg->download_size != 0) { struct dload_payload *payload; ASSERT(spkg->filename != NULL, RET_ERR(handle, ALPM_ERR_PKG_INVALID_NAME, -1)); payload = build_payload(handle, spkg->filename, spkg->size, repo->servers); ASSERT(payload, return -1); *files = alpm_list_add(*files, payload); } } } return 0; } static int download_single_file(alpm_handle_t *handle, struct dload_payload *payload, const char *cachedir) { const alpm_list_t *server; payload->handle = handle; payload->allow_resume = 1; for(server = payload->servers; server; server = server->next) { const char *server_url = server->data; size_t len; /* print server + filename into a buffer */ len = strlen(server_url) + strlen(payload->remote_name) + 2; MALLOC(payload->fileurl, len, RET_ERR(handle, ALPM_ERR_MEMORY, -1)); snprintf(payload->fileurl, len, "%s/%s", server_url, payload->remote_name); if(_alpm_download(payload, cachedir, NULL) != -1) { return 0; } FREE(payload->fileurl); payload->unlink_on_fail = 0; } return -1; } static int download_files(alpm_handle_t *handle, alpm_list_t **deltas) { const char *cachedir; alpm_list_t *i, *files = NULL; int errors = 0; cachedir = _alpm_filecache_setup(handle); handle->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 = handle->trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; total_size += spkg->download_size; } handle->totaldlcb(total_size); } for(i = handle->dbs_sync; i; i = i->next) { errors += find_dl_candidates(i->data, &files, deltas); } if(files) { /* check for necessary disk space for download */ if(handle->checkspace) { off_t *file_sizes; size_t idx, num_files; int ret; _alpm_log(handle, ALPM_LOG_DEBUG, "checking available disk space for download\n"); num_files = alpm_list_count(files); CALLOC(file_sizes, num_files, sizeof(off_t), goto finish); for(i = files, idx = 0; i; i = i->next, idx++) { const struct dload_payload *payload = i->data; file_sizes[idx] = payload->max_size; } ret = _alpm_check_downloadspace(handle, cachedir, num_files, file_sizes); free(file_sizes); if(ret != 0) { errors++; goto finish; } } EVENT(handle, ALPM_EVENT_RETRIEVE_START, NULL, NULL); for(i = files; i; i = i->next) { if(download_single_file(handle, i->data, cachedir) == -1) { errors++; _alpm_log(handle, ALPM_LOG_WARNING, _("failed to retrieve some files\n")); } } } finish: if(files) { alpm_list_free_inner(files, (alpm_list_fn_free)_alpm_dload_payload_reset); FREELIST(files); } for(i = handle->trans->add; i; i = i->next) { alpm_pkg_t *pkg = i->data; pkg->infolevel &= ~INFRQ_DSIZE; pkg->download_size = 0; } /* clear out value to let callback know we are done */ if(handle->totaldlcb) { handle->totaldlcb(0); } return errors; } static int check_validity(alpm_handle_t *handle, size_t total, size_t total_bytes) { struct validity { alpm_pkg_t *pkg; char *path; alpm_siglist_t *siglist; alpm_siglevel_t level; alpm_pkgvalidation_t validation; alpm_errno_t error; }; size_t current = 0, current_bytes = 0; alpm_list_t *i, *errors = NULL; /* Check integrity of packages */ EVENT(handle, ALPM_EVENT_INTEGRITY_START, NULL, NULL); for(i = handle->trans->add; i; i = i->next, current++) { struct validity v = { i->data, NULL, NULL, 0, 0, 0 }; int percent = (int)(((double)current_bytes / total_bytes) * 100); PROGRESS(handle, ALPM_PROGRESS_INTEGRITY_START, "", percent, total, current); if(v.pkg->origin == ALPM_PKG_FROM_FILE) { continue; /* pkg_load() has been already called, this package is valid */ } current_bytes += v.pkg->size; v.path = _alpm_filecache_find(handle, v.pkg->filename); v.level = alpm_db_get_siglevel(alpm_pkg_get_db(v.pkg)); if(_alpm_pkg_validate_internal(handle, v.path, v.pkg, v.level, &v.siglist, &v.validation) == -1) { v.error = handle->pm_errno; struct validity *invalid = malloc(sizeof(struct validity)); memcpy(invalid, &v, sizeof(struct validity)); errors = alpm_list_add(errors, invalid); } else { alpm_siglist_cleanup(v.siglist); free(v.siglist); free(v.path); v.pkg->validation = v.validation; } } PROGRESS(handle, ALPM_PROGRESS_INTEGRITY_START, "", 100, total, current); EVENT(handle, ALPM_EVENT_INTEGRITY_DONE, NULL, NULL); if(errors) { int tryagain = 0; for(i = errors; i; i = i->next) { struct validity *v = i->data; if(v->error == ALPM_ERR_PKG_INVALID_SIG) { int retry = _alpm_process_siglist(handle, v->pkg->name, v->siglist, v->level & ALPM_SIG_PACKAGE_OPTIONAL, v->level & ALPM_SIG_PACKAGE_MARGINAL_OK, v->level & ALPM_SIG_PACKAGE_UNKNOWN_OK); tryagain += retry; } else if(v->error == ALPM_ERR_PKG_INVALID_CHECKSUM) { prompt_to_delete(handle, v->path, v->error); } alpm_siglist_cleanup(v->siglist); free(v->siglist); free(v->path); free(v); } alpm_list_free(errors); if(tryagain == 0) { if(!handle->pm_errno) { RET_ERR(handle, ALPM_ERR_PKG_INVALID, -1); } return -1; } /* we were told at least once we can try again */ return 1; } return 0; } static int load_packages(alpm_handle_t *handle, alpm_list_t **data, size_t total, size_t total_bytes) { size_t current = 0, current_bytes = 0; int errors = 0; alpm_list_t *i; /* load packages from disk now that they are known-valid */ EVENT(handle, ALPM_EVENT_LOAD_START, NULL, NULL); for(i = handle->trans->add; i; i = i->next, current++) { alpm_pkg_t *spkg = i->data; char *filepath; int percent = (int)(((double)current_bytes / total_bytes) * 100); PROGRESS(handle, ALPM_PROGRESS_LOAD_START, "", percent, total, current); if(spkg->origin == ALPM_PKG_FROM_FILE) { continue; /* pkg_load() has been already called, this package is valid */ } current_bytes += spkg->size; filepath = _alpm_filecache_find(handle, spkg->filename); /* load the package file and replace pkgcache entry with it in the target list */ /* TODO: alpm_pkg_get_db() will not work on this target anymore */ _alpm_log(handle, ALPM_LOG_DEBUG, "replacing pkgcache entry with package file for target %s\n", spkg->name); alpm_pkg_t *pkgfile =_alpm_pkg_load_internal(handle, filepath, 1); if(!pkgfile) { errors++; *data = alpm_list_add(*data, strdup(spkg->filename)); free(filepath); continue; } free(filepath); /* copy over the install reason */ pkgfile->reason = spkg->reason; /* copy over validation method */ pkgfile->validation = spkg->validation; i->data = pkgfile; /* spkg has been removed from the target list, so we can free the * sync-specific fields */ _alpm_pkg_free_trans(spkg); } PROGRESS(handle, ALPM_PROGRESS_LOAD_START, "", 100, total, current); EVENT(handle, ALPM_EVENT_LOAD_DONE, NULL, NULL); if(errors) { if(!handle->pm_errno) { RET_ERR(handle, ALPM_ERR_PKG_INVALID, -1); } return -1; } return 0; } int _alpm_sync_commit(alpm_handle_t *handle, alpm_list_t **data) { alpm_list_t *i, *deltas = NULL; size_t total = 0, total_bytes = 0; alpm_trans_t *trans = handle->trans; if(download_files(handle, &deltas)) { alpm_list_free(deltas); return -1; } if(validate_deltas(handle, deltas)) { alpm_list_free(deltas); return -1; } alpm_list_free(deltas); /* Use the deltas to generate the packages */ if(apply_deltas(handle)) { return -1; } /* get the total size of all packages so we can adjust the progress bar more * realistically if there are small and huge packages involved */ for(i = trans->add; i; i = i->next) { alpm_pkg_t *spkg = i->data; if(spkg->origin != ALPM_PKG_FROM_FILE) { total_bytes += spkg->size; } total++; } /* this can only happen maliciously */ total_bytes = total_bytes ? total_bytes : 1; /* this one is special: -1 is failure, 1 is retry, 0 is success */ while(1) { int ret = check_validity(handle, total, total_bytes); if(ret == 0) { break; } else if(ret < 0) { return -1; } } if(trans->flags & ALPM_TRANS_FLAG_DOWNLOADONLY) { return 0; } if(load_packages(handle, data, total, total_bytes)) { return -1; } trans->state = STATE_COMMITING; /* fileconflict check */ if(!(trans->flags & (ALPM_TRANS_FLAG_FORCE|ALPM_TRANS_FLAG_DBONLY))) { EVENT(handle, ALPM_EVENT_FILECONFLICTS_START, NULL, NULL); _alpm_log(handle, ALPM_LOG_DEBUG, "looking for file conflicts\n"); alpm_list_t *conflict = _alpm_db_find_fileconflicts(handle, trans->add, trans->remove); if(conflict) { if(data) { *data = conflict; } else { alpm_list_free_inner(conflict, (alpm_list_fn_free)_alpm_fileconflict_free); alpm_list_free(conflict); } RET_ERR(handle, ALPM_ERR_FILE_CONFLICTS, -1); } EVENT(handle, ALPM_EVENT_FILECONFLICTS_DONE, NULL, NULL); } /* check available disk space */ if(handle->checkspace && !(trans->flags & ALPM_TRANS_FLAG_DBONLY)) { EVENT(handle, ALPM_EVENT_DISKSPACE_START, NULL, NULL); _alpm_log(handle, ALPM_LOG_DEBUG, "checking available disk space\n"); if(_alpm_check_diskspace(handle) == -1) { _alpm_log(handle, ALPM_LOG_ERROR, _("not enough free disk space\n")); return -1; } EVENT(handle, ALPM_EVENT_DISKSPACE_DONE, NULL, NULL); } /* remove conflicting and to-be-replaced packages */ if(trans->remove) { _alpm_log(handle, ALPM_LOG_DEBUG, "removing conflicting and to-be-replaced packages\n"); /* we want the frontend to be aware of commit details */ if(_alpm_remove_packages(handle, 0) == -1) { _alpm_log(handle, ALPM_LOG_ERROR, _("could not commit removal transaction\n")); return -1; } } /* install targets */ _alpm_log(handle, ALPM_LOG_DEBUG, "installing packages\n"); if(_alpm_upgrade_packages(handle) == -1) { _alpm_log(handle, ALPM_LOG_ERROR, _("could not commit transaction\n")); return -1; } return 0; } /* vim: set ts=2 sw=2 noet: */