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pacman/lib/libalpm/sync.c

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/*
* sync.c
*
* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2005 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 <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, alpm_pkg_get_name(pkg));
}
if(spkg == NULL) {
_alpm_log(pkg->handle, ALPM_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 */
if(_alpm_pkg_compare_versions(spkg, pkg) > 0) {
_alpm_log(pkg->handle, ALPM_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;
}
/* spkg is not an upgrade */
return NULL;
}
/** 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.
* If found, don't check other databases */
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);
if(spkg) {
/* 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);
trans->add = alpm_list_add(trans->add, spkg);
}
} 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);
trans->add = alpm_list_add(trans->add, spkg);
}
} else {
_alpm_log(handle, ALPM_LOG_WARNING, _("%s: local (%s) is newer than %s (%s)\n"),
lpkg->name, lpkg->version, sdb->treename, spkg->version);
}
}
/* jump to next local package */
break;
} else {
/* 2. search for replacers in sdb */
alpm_list_t *k, *l;
for(k = _alpm_db_get_pkgcache(sdb); k; k = k->next) {
int found = 0;
spkg = k->data;
for(l = alpm_pkg_get_replaces(spkg); l; l = l->next) {
alpm_depend_t *replace = l->data;
if(_alpm_depcmp(lpkg, replace)) {
found = 1;
break;
}
}
if(found) {
/* 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;
}
int doreplace = 0;
QUESTION(trans, ALPM_TRANS_CONV_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 */
alpm_pkg_t *tpkg = _alpm_pkg_find(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);
trans->add = alpm_list_add(trans->add, spkg);
}
}
}
}
}
}
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 *
* @pram 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_readgroup(db, name);
if(!grp)
continue;
for(j = grp->packages; j; j = j->next) {
alpm_pkg_t *pkg = j->data;
if(_alpm_pkg_find(ignorelist, alpm_pkg_get_name(pkg))) {
continue;
}
if(_alpm_pkg_should_ignore(db->handle, pkg)) {
ignorelist = alpm_list_add(ignorelist, pkg);
int install = 0;
QUESTION(db->handle->trans, ALPM_TRANS_CONV_INSTALL_IGNOREPKG, pkg,
NULL, NULL, &install);
if(!install)
continue;
}
if(!_alpm_pkg_find(pkgs, alpm_pkg_get_name(pkg))) {
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;
off_t size = 0;
alpm_handle_t *handle = newpkg->handle;
if(newpkg->origin != PKG_FROM_SYNCDB) {
newpkg->infolevel |= INFRQ_DSIZE;
newpkg->download_size = 0;
return 0;
}
fname = alpm_pkg_get_filename(newpkg);
ASSERT(fname != NULL, RET_ERR(handle, ALPM_ERR_PKG_INVALID_NAME, -1));
fpath = _alpm_filecache_find(handle, 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(handle,
alpm_pkg_get_deltas(newpkg),
alpm_pkg_get_filename(newpkg),
&newpkg->delta_path);
if(newpkg->delta_path && (dltsize < pkgsize * MAX_DELTA_RATIO)) {
_alpm_log(handle, ALPM_LOG_DEBUG, "using delta size\n");
size = dltsize;
} else {
_alpm_log(handle, ALPM_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(handle, ALPM_LOG_DEBUG, "setting download size %jd for pkg %s\n",
(intmax_t)size, alpm_pkg_get_name(newpkg));
newpkg->infolevel |= INFRQ_DSIZE;
newpkg->download_size = size;
return 0;
}
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;
alpm_list_t *remove = NULL;
int ret = 0;
alpm_trans_t *trans = handle->trans;
if(data) {
*data = NULL;
}
/* ensure all sync database are valid since 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_VALID)) {
RET_ERR(handle, ALPM_ERR_DB_INVALID, -1);
}
}
if(!(trans->flags & ALPM_TRANS_FLAG_NODEPS)) {
alpm_list_t *resolved = NULL; /* target list after resolvedeps */
/* Build up list by repeatedly resolving each transaction package */
/* Resolve targets dependencies */
EVENT(trans, ALPM_TRANS_EVT_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) */
alpm_list_t *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);
/* 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;
QUESTION(trans, ALPM_TRANS_CONV_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; /* pm_errno was set by resolvedeps */
if(data) {
alpm_list_free_inner(*data, (alpm_list_fn_free)_alpm_depmiss_free);
alpm_list_free(*data);
*data = NULL;
}
} else {
/* pm_errno is set by resolvedeps */
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, so
we free the transaction specific fields */
alpm_list_free_inner(unresolvable, (alpm_list_fn_free)_alpm_pkg_free_trans);
/* re-order w.r.t. dependencies */
alpm_list_free(trans->add);
trans->add = _alpm_sortbydeps(handle, resolved, 0);
alpm_list_free(resolved);
EVENT(trans, ALPM_TRANS_EVT_RESOLVEDEPS_DONE, NULL, NULL);
}
if(!(trans->flags & ALPM_TRANS_FLAG_NOCONFLICTS)) {
/* check for inter-conflicts and whatnot */
EVENT(trans, ALPM_TRANS_EVT_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);
_alpm_pkg_free_trans(rsync); /* rsync is not transaction target anymore */
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(trans, ALPM_TRANS_CONV_CONFLICT_PKG, conflict->package1,
conflict->package2, conflict->reason, &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(trans, ALPM_TRANS_EVT_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_log(handle, ALPM_LOG_DEBUG, "adding '%s' to remove list\n", rpkg->name);
trans->remove = alpm_list_add(trans->remove, _alpm_pkg_dup(rpkg));
}
}
}
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:
alpm_list_free(unresolvable);
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(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 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;
}
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;
CALLOC(from, len, sizeof(char), RET_ERR(handle, ALPM_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(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(trans, ALPM_TRANS_EVT_DELTA_PATCH_START, d->to, d->delta);
int retval = system(command);
if(retval == 0) {
EVENT(trans, ALPM_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, ALPM_TRANS_EVT_DELTA_PATCH_FAILED, NULL, NULL);
handle->pm_errno = ALPM_ERR_DLT_PATCHFAILED;
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 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_trans_t *trans, const char *filepath,
enum _alpm_errno_t reason)
{
int doremove = 0;
QUESTION(trans, ALPM_TRANS_CONV_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 **data)
{
int errors = 0, ret = 0;
alpm_list_t *i;
alpm_trans_t *trans = handle->trans;
if(!deltas) {
return 0;
}
/* Check integrity of deltas */
EVENT(trans, ALPM_TRANS_EVT_DELTA_INTEGRITY_START, NULL, NULL);
for(i = deltas; i; i = i->next) {
alpm_delta_t *d = alpm_list_getdata(i);
char *filepath = _alpm_filecache_find(handle, d->delta);
ret = _alpm_test_checksum(filepath, d->delta_md5, ALPM_CSUM_MD5);
if(ret != 0) {
prompt_to_delete(trans, filepath, ALPM_ERR_DLT_INVALID);
errors++;
*data = alpm_list_add(*data, strdup(d->delta));
}
FREE(filepath);
}
if(errors) {
handle->pm_errno = ALPM_ERR_DLT_INVALID;
return -1;
}
EVENT(trans, ALPM_TRANS_EVT_DELTA_INTEGRITY_DONE, NULL, NULL);
/* Use the deltas to generate the packages */
EVENT(trans, ALPM_TRANS_EVT_DELTA_PATCHES_START, NULL, NULL);
ret = apply_deltas(handle);
EVENT(trans, ALPM_TRANS_EVT_DELTA_PATCHES_DONE, NULL, NULL);
return ret;
}
static int download_files(alpm_handle_t *handle, alpm_list_t **deltas)
{
const char *cachedir;
alpm_list_t *i, *j;
alpm_list_t *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);
}
/* group sync records by repository and download */
for(i = handle->dbs_sync; i; i = i->next) {
alpm_db_t *current = i->data;
for(j = handle->trans->add; j; j = j->next) {
alpm_pkg_t *spkg = j->data;
if(spkg->origin != PKG_FROM_FILE && current == spkg->origin_data.db) {
alpm_list_t *delta_path = spkg->delta_path;
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 *dpayload;
CALLOC(dpayload, 1, sizeof(*dpayload), RET_ERR(handle, ALPM_ERR_MEMORY, -1));
STRDUP(dpayload->filename, delta->delta, RET_ERR(handle, ALPM_ERR_MEMORY, -1));
dpayload->max_size = delta->download_size;
files = alpm_list_add(files, dpayload);
}
/* 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));
CALLOC(payload, 1, sizeof(*payload), RET_ERR(handle, ALPM_ERR_MEMORY, -1));
STRDUP(payload->filename, spkg->filename, RET_ERR(handle, ALPM_ERR_MEMORY, -1));
payload->max_size = alpm_pkg_get_size(spkg);
files = alpm_list_add(files, payload);
}
}
}
if(files) {
EVENT(handle->trans, ALPM_TRANS_EVT_RETRIEVE_START, current->treename, NULL);
for(j = files; j; j = j->next) {
struct dload_payload *payload = j->data;
alpm_list_t *server;
int ret = -1;
for(server = current->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->filename) + 2;
CALLOC(payload->fileurl, len, sizeof(char), RET_ERR(handle, ALPM_ERR_MEMORY, -1));
snprintf(payload->fileurl, len, "%s/%s", server_url, payload->filename);
payload->handle = handle;
payload->allow_resume = 1;
ret = _alpm_download(payload, cachedir, NULL);
if(ret != -1) {
break;
}
}
if(ret == -1) {
errors++;
_alpm_log(handle, ALPM_LOG_WARNING, _("failed to retrieve some files from %s\n"),
current->treename);
}
}
alpm_list_free_inner(files, (alpm_list_fn_free)_alpm_dload_payload_free);
alpm_list_free(files);
files = NULL;
}
}
for(j = handle->trans->add; j; j = j->next) {
alpm_pkg_t *pkg = j->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;
}
int _alpm_sync_commit(alpm_handle_t *handle, alpm_list_t **data)
{
alpm_list_t *i;
alpm_list_t *deltas = NULL;
size_t numtargs, current = 0, replaces = 0;
int errors;
alpm_trans_t *trans = handle->trans;
if(download_files(handle, &deltas)) {
alpm_list_free(deltas);
return -1;
}
if(validate_deltas(handle, deltas, data)) {
alpm_list_free(deltas);
return -1;
}
alpm_list_free(deltas);
/* Check integrity of packages */
numtargs = alpm_list_count(trans->add);
EVENT(trans, ALPM_TRANS_EVT_INTEGRITY_START, NULL, NULL);
errors = 0;
for(i = trans->add; i; i = i->next, current++) {
alpm_pkg_t *spkg = i->data;
int percent = (current * 100) / numtargs;
const char *filename;
char *filepath;
alpm_siglevel_t level;
PROGRESS(trans, ALPM_TRANS_PROGRESS_INTEGRITY_START, "", percent,
numtargs, current);
if(spkg->origin == PKG_FROM_FILE) {
continue; /* pkg_load() has been already called, this package is valid */
}
filename = alpm_pkg_get_filename(spkg);
filepath = _alpm_filecache_find(handle, filename);
alpm_db_t *sdb = alpm_pkg_get_db(spkg);
level = alpm_db_get_siglevel(sdb);
/* 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, spkg->md5sum,
spkg->sha256sum, spkg->base64_sig, level);
if(!pkgfile) {
prompt_to_delete(trans, filepath, handle->pm_errno);
errors++;
*data = alpm_list_add(*data, strdup(filename));
FREE(filepath);
continue;
}
FREE(filepath);
pkgfile->reason = spkg->reason; /* copy over install reason */
i->data = pkgfile;
_alpm_pkg_free_trans(spkg); /* spkg has been removed from the target list */
}
PROGRESS(trans, ALPM_TRANS_PROGRESS_INTEGRITY_START, "", 100,
numtargs, current);
EVENT(trans, ALPM_TRANS_EVT_INTEGRITY_DONE, NULL, NULL);
if(errors) {
if(!handle->pm_errno) {
RET_ERR(handle, ALPM_ERR_PKG_INVALID, -1);
}
return -1;
}
if(trans->flags & ALPM_TRANS_FLAG_DOWNLOADONLY) {
return 0;
}
trans->state = STATE_COMMITING;
replaces = alpm_list_count(trans->remove);
/* fileconflict check */
if(!(trans->flags & ALPM_TRANS_FLAG_FORCE)) {
EVENT(trans, ALPM_TRANS_EVT_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(trans, ALPM_TRANS_EVT_FILECONFLICTS_DONE, NULL, NULL);
}
/* check available disk space */
if(handle->checkspace) {
EVENT(trans, ALPM_TRANS_EVT_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, "%s\n", _("not enough free disk space"));
return -1;
}
EVENT(trans, ALPM_TRANS_EVT_DISKSPACE_DONE, NULL, NULL);
}
/* remove conflicting and to-be-replaced packages */
if(replaces) {
_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) == -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: */
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