moparisthebest/pacman
1
0
Fork 0
mirror of https://github.com/moparisthebest/pacman synced 2024-11-10 03:25:01 -05:00
Code Issues Releases Wiki Activity
df99495b82
pacman/lib/libalpm/sync.c
Jonathan Conder df99495b82 Compute package download size outside _alpm_sync_prepare 
And add a new info level for this piece of data.

Signed-off-by: Jonathan Conder <j@skurvy.no-ip.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
2010-05-05 18:15:52 -05:00

1011 lines
29 KiB
C
Raw Blame History

/*
* sync.c
*
* Copyright (c) 2006-2010 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 <fcntl.h>
#include <string.h>
#include <stdint.h> /* intmax_t */
#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 "add.h"
#include "util.h"
#include "handle.h"
#include "alpm.h"
#include "dload.h"
#include "delta.h"
#include "remove.h"
/** 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)
{
ASSERT(pkg != NULL, return(NULL));
alpm_list_t *i;
pmpkg_t *spkg = NULL;
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 */
if(_alpm_pkg_compare_versions(spkg, pkg) > 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);
}
/* spkg is not an upgrade */
return(NULL);
}
/** 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_sync_sysupgrade(int enable_downgrade)
{
alpm_list_t *i, *j, *k;
pmtrans_t *trans;
pmdb_t *db_local;
alpm_list_t *dbs_sync;
ALPM_LOG_FUNC;
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
trans = handle->trans;
db_local = handle->db_local;
dbs_sync = handle->dbs_sync;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
_alpm_log(PM_LOG_DEBUG, "checking for package upgrades\n");
for(i = _alpm_db_get_pkgcache(db_local); i; i = i->next) {
pmpkg_t *lpkg = i->data;
if(_alpm_pkg_find(trans->add, lpkg->name)) {
_alpm_log(PM_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 = dbs_sync; j; j = j->next) {
pmdb_t *sdb = j->data;
/* Check sdb */
pmpkg_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(PM_LOG_DEBUG, "new version of '%s' found (%s => %s)\n",
lpkg->name, lpkg->version, spkg->version);
/* check IgnorePkg/IgnoreGroup */
if(_alpm_pkg_should_ignore(spkg) || _alpm_pkg_should_ignore(lpkg)) {
_alpm_log(PM_LOG_WARNING, _("%s: ignoring package upgrade (%s => %s)\n"),
lpkg->name, lpkg->version, spkg->version);
} else {
_alpm_log(PM_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(spkg) || _alpm_pkg_should_ignore(lpkg)) {
_alpm_log(PM_LOG_WARNING, _("%s: ignoring package downgrade (%s => %s)\n"),
lpkg->name, lpkg->version, spkg->version);
} else {
_alpm_log(PM_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(PM_LOG_WARNING, _("%s: local (%s) is newer than %s (%s)\n"),
lpkg->name, lpkg->version, sdb->treename, spkg->version);
}
}
break; /* jump to next local package */
} else { /* 2. search for replacers in sdb */
int found = 0;
for(k = _alpm_db_get_pkgcache(sdb); k; k = k->next) {
spkg = k->data;
if(alpm_list_find_str(alpm_pkg_get_replaces(spkg), lpkg->name)) {
found = 1;
/* check IgnorePkg/IgnoreGroup */
if(_alpm_pkg_should_ignore(spkg) || _alpm_pkg_should_ignore(lpkg)) {
_alpm_log(PM_LOG_WARNING, _("ignoring package replacement (%s-%s => %s-%s)\n"),
lpkg->name, lpkg->version, spkg->name, spkg->version);
continue;
}
int doreplace = 0;
QUESTION(trans, PM_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 */
pmpkg_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(PM_LOG_WARNING, _("cannot replace %s by %s\n"),
lpkg->name, spkg->name);
continue;
}
_alpm_log(PM_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) == PM_PKG_REASON_EXPLICIT) {
tpkg->reason = PM_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(PM_LOG_DEBUG, "adding package %s-%s to the transaction targets\n",
spkg->name, spkg->version);
trans->add = alpm_list_add(trans->add, spkg);
}
}
}
if(found) {
break; /* jump to next local package */
}
}
}
}
return(0);
}
int _alpm_sync_pkg(pmpkg_t *spkg)
{
pmtrans_t *trans;
pmdb_t *db_local;
pmpkg_t *local;
ALPM_LOG_FUNC;
trans = handle->trans;
db_local = handle->db_local;
if(_alpm_pkg_find(trans->add, 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 */
spkg->reason = PM_PKG_REASON_EXPLICIT;
_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->add = alpm_list_add(trans->add, spkg);
return(0);
}
int _alpm_sync_target(alpm_list_t *dbs_sync, char *target)
{
alpm_list_t *i, *j;
pmpkg_t *spkg;
pmdepend_t *dep; /* provisions and dependencies are also allowed */
pmgrp_t *grp;
int found = 0;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(target != NULL && strlen(target) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
dep = _alpm_splitdep(target);
spkg = _alpm_resolvedep(dep, dbs_sync, NULL, 1);
_alpm_dep_free(dep);
if(spkg != NULL) {
return(_alpm_sync_pkg(spkg));
}
_alpm_log(PM_LOG_DEBUG, "%s package not found, searching for group...\n", target);
for(i = dbs_sync; i; i = i->next) {
pmdb_t *db = i->data;
grp = alpm_db_readgrp(db, target);
if(grp) {
found = 1;
for(j = alpm_grp_get_pkgs(grp); j; j = j->next) {
pmpkg_t *pkg = j->data;
if(_alpm_sync_pkg(pkg) == -1) {
if(pm_errno == PM_ERR_TRANS_DUP_TARGET || pm_errno == PM_ERR_PKG_IGNORED) {
/* just skip duplicate or ignored targets */
continue;
} else {
return(-1);
}
}
}
}
}
if(!found) {
RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
}
return(0);
}
/** Add a sync target to the transaction.
* @param target the name of the sync target to add
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_sync_dbtarget(char *dbname, char *target)
{
alpm_list_t *i;
alpm_list_t *dbs_sync;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
dbs_sync = handle->dbs_sync;
/* we are looking for a package in a specific database */
alpm_list_t *dbs = NULL;
_alpm_log(PM_LOG_DEBUG, "searching for target '%s' in repo '%s'\n", target, dbname);
for(i = dbs_sync; i; i = i->next) {
pmdb_t *db = i->data;
if(strcmp(db->treename, dbname) == 0) {
dbs = alpm_list_add(NULL, db);
break;
}
}
if(dbs == NULL) {
RET_ERR(PM_ERR_PKG_REPO_NOT_FOUND, -1);
}
return(_alpm_sync_target(dbs, target));
}
/** Add a sync target to the transaction.
* @param target the name of the sync target to add
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_sync_target(char *target)
{
alpm_list_t *dbs_sync;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
dbs_sync = handle->dbs_sync;
return(_alpm_sync_target(dbs_sync,target));
}
/** 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;
if(newpkg->origin == PKG_FROM_FILE) {
newpkg->infolevel |= INFRQ_DSIZE;
newpkg->download_size = 0;
return(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),
&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 %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(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, alpm_list_t **data)
{
alpm_list_t *deps = NULL;
alpm_list_t *unresolvable = NULL;
alpm_list_t *i, *j;
alpm_list_t *remove = NULL;
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;
}
if(!(trans->flags & PM_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, 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->add; i; i = i->next) {
pmpkg_t *spkg = i->data;
for(j = spkg->removes; j; j = j->next) {
remove = alpm_list_add(remove, j->data);
}
}
/* Resolve packages in the transaction one at a time, in addtion
building up a list of packages which could not be resolved. */
for(i = trans->add; i; i = i->next) {
pmpkg_t *pkg = i->data;
if(_alpm_resolvedeps(db_local, dbs_sync, 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 */
}
/* 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(handle->trans, PM_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 */
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) {
pmpkg_t *pkg = i->data;
if(!_alpm_pkg_find(trans->add, pkg->name)) {
pkg->reason = PM_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(resolved, 0);
alpm_list_free(resolved);
EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_DONE, NULL, NULL);
}
if(!(trans->flags & PM_TRANS_FLAG_NOCONFLICTS)) {
/* 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(trans->add);
for(i = deps; i; i = i->next) {
pmconflict_t *conflict = i->data;
pmpkg_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(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, dep2)) {
rsync = sync2;
sync = sync1;
} else if(alpm_depcmp(sync2, 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->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(PM_LOG_DEBUG, "check targets vs db and db vs targets\n");
deps = _alpm_outerconflicts(db_local, trans->add);
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->add; j && !found; j = j->next) {
pmpkg_t *spkg = j->data;
if(_alpm_pkg_find(spkg->removes, conflict->package2)) {
found = 1;
}
}
if(found) {
continue;
}
_alpm_log(PM_LOG_DEBUG, "package '%s' conflicts with '%s'\n",
conflict->package1, conflict->package2);
pmpkg_t *sync = _alpm_pkg_find(trans->add, 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, conflict->reason, &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);
}
/* Build trans->remove list */
for(i = trans->add; i; i = i->next) {
pmpkg_t *spkg = i->data;
for(j = spkg->removes; j; j = j->next) {
trans->remove = alpm_list_add(trans->remove, _alpm_pkg_dup(j->data));
}
}
if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) {
_alpm_log(PM_LOG_DEBUG, "checking dependencies\n");
deps = alpm_checkdeps(_alpm_db_get_pkgcache(db_local), 1, trans->remove, trans->add);
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 = trans->add; 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(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(pmpkg_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 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->add; i; i = i->next) {
pmpkg_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) {
pmdelta_t *d = dlts->data;
char *delta, *from, *to;
char command[PATH_MAX];
size_t 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);
/* 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(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;
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->add; i; i = i->next) {
pmpkg_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) {
pmdb_t *current = i->data;
for(j = trans->add; j; j = j->next) {
pmpkg_t *spkg = j->data;
if(spkg->origin == PKG_FROM_CACHE && current == spkg->origin_data.db) {
const char *fname = NULL;
fname = alpm_pkg_get_filename(spkg);
ASSERT(fname != NULL, RET_ERR(PM_ERR_PKG_INVALID_NAME, -1));
alpm_list_t *delta_path = spkg->delta_path;
if(delta_path) {
/* using deltas */
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 needed */
files = alpm_list_add(files, strdup(d->delta));
}
/* keep a list of all the delta files for md5sums */
deltas = alpm_list_add(deltas, d);
}
} else {
/* not using deltas */
if(spkg->download_size != 0) {
/* add the filename to the download list if needed */
files = alpm_list_add(files, strdup(fname));
}
}
}
}
if(files) {
EVENT(trans, PM_TRANS_EVT_RETRIEVE_START, current->treename, NULL);
errors = _alpm_download_files(files, current->servers, cachedir);
for(j = trans->add; j; j = j->next) {
pmpkg_t *pkg = j->data;
pkg->infolevel &= ~INFRQ_DSIZE;
pkg->download_size = 0;
}
if (errors) {
_alpm_log(PM_LOG_WARNING, _("failed to retrieve some files from %s\n"),
current->treename);
if(pm_errno == 0) {
pm_errno = PM_ERR_RETRIEVE;
}
goto error;
}
FREELIST(files);
}
}
/* clear out value to let callback know we are done */
if(handle->totaldlcb) {
handle->totaldlcb(0);
}
/* if we have deltas to work with */
if(handle->usedelta && deltas) {
int ret = 0;
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->add; i; i = i->next) {
pmpkg_t *spkg = i->data;
if(spkg->origin == PKG_FROM_FILE) {
continue; /* pkg_load() has been already called, this package is valid */
}
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));
continue;
}
/* 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(PM_LOG_DEBUG, "replacing pkgcache entry with package file for target %s\n", spkg->name);
char *filepath = _alpm_filecache_find(filename);
pmpkg_t *pkgfile;
if(alpm_pkg_load(filepath, 1, &pkgfile) != 0) {
_alpm_pkg_free(pkgfile);
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 */
}
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);
}
trans->state = STATE_COMMITING;
replaces = alpm_list_count(trans->remove);
/* fileconflict check */
if(!(trans->flags & PM_TRANS_FLAG_FORCE)) {
EVENT(trans, PM_TRANS_EVT_FILECONFLICTS_START, NULL, NULL);
_alpm_log(PM_LOG_DEBUG, "looking for file conflicts\n");
alpm_list_t *conflict = _alpm_db_find_fileconflicts(db_local, trans,
trans->add, trans->remove);
if(conflict) {
pm_errno = PM_ERR_FILE_CONFLICTS;
if(data) {
*data = conflict;
} else {
alpm_list_free_inner(conflict, (alpm_list_fn_free)_alpm_fileconflict_free);
alpm_list_free(conflict);
}
goto error;
}
EVENT(trans, PM_TRANS_EVT_FILECONFLICTS_DONE, NULL, NULL);
}
/* remove conflicting and to-be-replaced packages */
if(replaces) {
_alpm_log(PM_LOG_DEBUG, "removing conflicting and to-be-replaced packages\n");
/* we want the frontend to be aware of commit details */
if(_alpm_remove_packages(trans, handle->db_local) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not commit removal transaction\n"));
goto error;
}
}
/* install targets */
_alpm_log(PM_LOG_DEBUG, "installing packages\n");
if(_alpm_upgrade_packages(trans, handle->db_local) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not commit transaction\n"));
goto error;
}
ret = 0;
error:
FREELIST(files);
alpm_list_free(deltas);
return(ret);
}
/* vim: set ts=2 sw=2 noet: */
Reference in New Issue View Git Blame Copy Permalink