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pacman/lib/libalpm/sync.c
Dan McGee 2bcecbd62c Remove unnecessary casts on malloc and elsewhere 
We had many unnecessary casts, most of them dealing with malloc and
other memory allocations. The variable type should take care of it;
no need to do it explicitly. In addition, I caught a const error while
removing the casts.

Signed-off-by: Dan McGee <dan@archlinux.org>
2007-05-14 03:16:55 -04:00

1123 lines
34 KiB
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/*
* sync.c
*
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#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 "error.h"
#include "package.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "conflict.h"
#include "provide.h"
#include "trans.h"
#include "util.h"
#include "versioncmp.h"
#include "handle.h"
#include "util.h"
#include "alpm.h"
#include "md5.h"
#include "sha1.h"
#include "handle.h"
#include "server.h"
pmsyncpkg_t *_alpm_sync_new(int type, pmpkg_t *spkg, void *data)
{
pmsyncpkg_t *sync;
ALPM_LOG_FUNC;
if((sync = malloc(sizeof(pmsyncpkg_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmsyncpkg_t));
return(NULL);
}
sync->type = type;
sync->pkg = spkg;
sync->data = data;
return(sync);
}
void _alpm_sync_free(pmsyncpkg_t *sync)
{
ALPM_LOG_FUNC;
if(sync == NULL) {
return;
}
/* TODO wow this is ugly */
if(sync->type == PM_SYNC_TYPE_REPLACE) {
alpm_list_t *tmp;
for(tmp = sync->data; tmp; tmp = alpm_list_next(tmp)) {
_alpm_pkg_free(tmp->data);
tmp->data = NULL;
}
sync->data = NULL;
} else {
_alpm_pkg_free(sync->data);
sync->data = NULL;
}
FREE(sync);
}
/* Find recommended replacements for packages during a sync.
* (refactored from _alpm_sync_prepare)
*/
static int find_replacements(pmtrans_t *trans, pmdb_t *db_local,
alpm_list_t *dbs_sync)
{
alpm_list_t *i, *j, *k; /* wow */
ALPM_LOG_FUNC;
/* check for "recommended" package replacements */
_alpm_log(PM_LOG_DEBUG, _("checking for package replacements"));
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'"), replacement, spkg->name);
/* ignore if EITHER the local or replacement package are to be ignored */
if(alpm_list_find_str(handle->ignorepkg, spkg->name)
|| alpm_list_find_str(handle->ignorepkg, lpkg->name)) {
_alpm_log(PM_LOG_WARNING, _("%s-%s: ignoring package upgrade (to be replaced by %s-%s)"),
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 */
int doreplace = 0;
QUESTION(trans, PM_TRANS_CONV_REPLACE_PKG, lpkg, spkg, db->treename, &doreplace);
if(doreplace) {
/* if confirmed, add this to the 'final' list, designating 'lpkg' as
* the package to replace.
*/
pmsyncpkg_t *sync;
pmpkg_t *dummy = _alpm_pkg_new(alpm_pkg_get_name(lpkg), NULL);
if(dummy == NULL) {
pm_errno = PM_ERR_MEMORY;
goto error;
}
dummy->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(lpkg));
/* check if spkg->name is already in the packages list. */
sync = _alpm_sync_find(trans->packages, alpm_pkg_get_name(spkg));
if(sync) {
/* found it -- just append to the replaces list */
sync->data = alpm_list_add(sync->data, dummy);
} else {
/* none found -- enter pkg into the final sync list */
sync = _alpm_sync_new(PM_SYNC_TYPE_REPLACE, spkg, NULL);
if(sync == NULL) {
_alpm_pkg_free(dummy);
pm_errno = PM_ERR_MEMORY;
goto error;
}
sync->data = alpm_list_add(NULL, dummy);
trans->packages = alpm_list_add(trans->packages, sync);
}
_alpm_log(PM_LOG_DEBUG, _("%s-%s elected for upgrade (to be replaced by %s-%s)"),
alpm_pkg_get_name(lpkg), alpm_pkg_get_version(lpkg),
alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg));
}
}
}
}
}
return(0);
error:
return(-1);
}
/* TODO reimplement this in terms of alpm_get_upgrades */
int _alpm_sync_sysupgrade(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync)
{
alpm_list_t *i, *j;
ALPM_LOG_FUNC;
/* check for "recommended" package replacements */
if(find_replacements(trans, db_local, dbs_sync) == 0) {
/* match installed packages with the sync dbs and compare versions */
_alpm_log(PM_LOG_DEBUG, _("checking for package upgrades"));
for(i = _alpm_db_get_pkgcache(db_local); i; i = i->next) {
int replace=0;
pmpkg_t *local = i->data;
pmpkg_t *spkg = NULL;
pmsyncpkg_t *sync;
for(j = dbs_sync; !spkg && j; j = j->next) {
spkg = _alpm_db_get_pkgfromcache(j->data, alpm_pkg_get_name(local));
}
if(spkg == NULL) {
_alpm_log(PM_LOG_DEBUG, _("'%s' not found in sync db -- skipping"), alpm_pkg_get_name(local));
continue;
}
/* we don't care about a to-be-replaced package's newer version */
for(j = trans->packages; j && !replace; j=j->next) {
sync = j->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
if(_alpm_pkg_find(alpm_pkg_get_name(spkg), sync->data)) {
replace=1;
}
}
}
if(replace) {
_alpm_log(PM_LOG_DEBUG, _("'%s' is already elected for removal -- skipping"),
alpm_pkg_get_name(local));
continue;
}
/* compare versions and see if we need to upgrade */
if(alpm_pkg_compare_versions(local, spkg)) {
_alpm_log(PM_LOG_DEBUG, _("%s-%s elected for upgrade (%s => %s)"),
alpm_pkg_get_name(local), alpm_pkg_get_version(local),
alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg));
if(!_alpm_sync_find(trans->packages, alpm_pkg_get_name(spkg))) {
/* If package is in the ignorepkg list, ask before we add it to
* the transaction */
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(local))) {
int resp = 0;
QUESTION(trans, PM_TRANS_CONV_INSTALL_IGNOREPKG, local, NULL, NULL, &resp);
if(!resp) {
continue;
}
}
pmpkg_t *tmp = _alpm_pkg_dup(local);
if(tmp == NULL) {
goto error;
}
sync = _alpm_sync_new(PM_SYNC_TYPE_UPGRADE, spkg, tmp);
if(sync == NULL) {
_alpm_pkg_free(tmp);
goto error;
}
trans->packages = alpm_list_add(trans->packages, sync);
}
}
}
return(0);
}
error:
/* if we're here, it's an error */
return(-1);
}
int _alpm_sync_addtarget(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t *dbs_sync, char *name)
{
char targline[PKG_FULLNAME_LEN];
char *targ;
alpm_list_t *j;
pmpkg_t *local;
pmpkg_t *spkg = NULL;
pmsyncpkg_t *sync;
int repo_found = 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));
ASSERT(name != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
strncpy(targline, name, PKG_FULLNAME_LEN);
targ = strchr(targline, '/');
if(targ) {
*targ = '\0';
targ++;
_alpm_log(PM_LOG_DEBUG, _("searching for target in repo '%s'"), targ);
for(j = dbs_sync; j && !spkg; j = j->next) {
pmdb_t *db = j->data;
if(strcmp(db->treename, targline) == 0) {
repo_found = 1;
spkg = _alpm_db_get_pkgfromcache(db, targ);
if(spkg == NULL) {
/* Search provides */
_alpm_log(PM_LOG_DEBUG, _("target '%s' not found -- looking for provisions"), targ);
alpm_list_t *p = _alpm_db_whatprovides(db, targ);
if(!p) {
RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
}
_alpm_log(PM_LOG_DEBUG, _("found '%s' as a provision for '%s'"), p->data, targ);
spkg = _alpm_db_get_pkgfromcache(db, p->data);
alpm_list_free(p);
}
}
}
if(!repo_found) {
_alpm_log(PM_LOG_ERROR, _("repository '%s' not found"), targline);
RET_ERR(PM_ERR_PKG_REPO_NOT_FOUND, -1);
}
} else {
targ = targline;
for(j = dbs_sync; j && !spkg; j = j->next) {
pmdb_t *db = j->data;
spkg = _alpm_db_get_pkgfromcache(db, targ);
}
if(spkg == NULL) {
/* Search provides */
_alpm_log(PM_LOG_DEBUG, _("target '%s' not found -- looking for provisions"), targ);
for(j = dbs_sync; j && !spkg; j = j->next) {
pmdb_t *db = j->data;
alpm_list_t *p = _alpm_db_whatprovides(db, targ);
if(p) {
_alpm_log(PM_LOG_DEBUG, _("found '%s' as a provision for '%s'"), p->data, targ);
spkg = _alpm_db_get_pkgfromcache(db, p->data);
alpm_list_free(p);
}
}
}
}
if(spkg == NULL) {
RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
}
local = _alpm_db_get_pkgfromcache(db_local, alpm_pkg_get_name(spkg));
if(local) {
if(alpm_pkg_compare_versions(local, spkg) == 0) {
/* spkg is NOT an upgrade, get confirmation before adding */
int resp = 0;
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(local))) {
QUESTION(trans, PM_TRANS_CONV_INSTALL_IGNOREPKG, local, NULL, NULL, &resp);
if(!resp) {
return(0);
}
} else if(!(trans->flags & PM_TRANS_FLAG_PRINTURIS)) {
QUESTION(trans, PM_TRANS_CONV_LOCAL_UPTODATE, local, NULL, NULL, &resp);
if(!resp) {
_alpm_log(PM_LOG_WARNING, _("%s-%s is up to date -- skipping"),
alpm_pkg_get_name(local), alpm_pkg_get_version(local));
return(0);
}
}
}
}
/* add the package to the transaction */
if(!_alpm_sync_find(trans->packages, alpm_pkg_get_name(spkg))) {
pmpkg_t *dummy = NULL;
if(local) {
dummy = _alpm_pkg_new(alpm_pkg_get_name(local),
alpm_pkg_get_version(local));
if(dummy == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
}
sync = _alpm_sync_new(PM_SYNC_TYPE_UPGRADE, spkg, dummy);
if(sync == NULL) {
_alpm_pkg_free(dummy);
RET_ERR(PM_ERR_MEMORY, -1);
}
_alpm_log(PM_LOG_DEBUG, _("adding target '%s' to the transaction set"),
alpm_pkg_get_name(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)
{
pmsyncpkg_t *sp1 = (pmsyncpkg_t *)s1;
pmsyncpkg_t *sp2 = (pmsyncpkg_t *)s2;
pmpkg_t *p1, *p2;
p1 = alpm_sync_get_pkg(sp1);
p2 = alpm_sync_get_pkg(sp2);
return(strcmp(alpm_pkg_get_name(p1), alpm_pkg_get_name(p2)));
}
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; /* list allowing checkdeps usage with data from trans->packages */
alpm_list_t *trail = NULL; /* breadcrumb list to avoid running into circles */
alpm_list_t *asked = NULL;
alpm_list_t *i, *j, *k, *l;
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)) {
/* Resolve targets dependencies */
EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_START, NULL, NULL);
_alpm_log(PM_LOG_DEBUG, _("resolving target's dependencies"));
for(i = trans->packages; i; i = i->next) {
pmpkg_t *spkg = ((pmsyncpkg_t *)i->data)->pkg;
if(_alpm_resolvedeps(db_local, dbs_sync, spkg, list, trail, trans, data) == -1) {
/* pm_errno is set by resolvedeps */
ret = -1;
goto cleanup;
}
}
for(i = list; i; i = i->next) {
/* add the dependencies found by resolvedeps to the transaction set */
pmpkg_t *spkg = i->data;
if(!_alpm_sync_find(trans->packages, alpm_pkg_get_name(spkg))) {
pmsyncpkg_t *sync = _alpm_sync_new(PM_SYNC_TYPE_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"),
alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg));
} else {
/* remove the original targets from the list if requested */
if((trans->flags & PM_TRANS_FLAG_DEPENDSONLY)) {
void *vpkg;
pmsyncpkg_t *sync;
const char *pkgname;
pkgname = alpm_pkg_get_name(spkg);
_alpm_log(PM_LOG_DEBUG, "removing package %s-%s from the transaction targets",
pkgname, alpm_pkg_get_version(spkg));
sync = _alpm_sync_find(trans->packages, pkgname);
trans->packages = alpm_list_remove(trans->packages, sync, syncpkg_cmp, &vpkg);
_alpm_sync_free(vpkg);
}
}
}
/* re-order w.r.t. dependencies */
k = l = NULL;
for(i=trans->packages; i; i=i->next) {
pmsyncpkg_t *s = (pmsyncpkg_t*)i->data;
k = alpm_list_add(k, s->pkg);
}
k = _alpm_sortbydeps(k, PM_TRANS_TYPE_ADD);
for(i=k; i; i=i->next) {
for(j=trans->packages; j; j=j->next) {
pmsyncpkg_t *s = (pmsyncpkg_t*)j->data;
if(s->pkg==i->data) {
l = alpm_list_add(l, s);
}
}
}
alpm_list_free(k);
alpm_list_free(trans->packages);
trans->packages = l;
EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_DONE, NULL, NULL);
_alpm_log(PM_LOG_DEBUG, _("looking for unresolvable dependencies"));
deps = _alpm_checkdeps(trans, db_local, PM_TRANS_TYPE_UPGRADE, list);
if(deps) {
if(data) {
*data = deps;
deps = NULL;
}
pm_errno = PM_ERR_UNSATISFIED_DEPS;
ret = -1;
goto cleanup;
}
alpm_list_free(trail);
}
/* 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"));
deps = _alpm_checkconflicts(db_local, list);
if(deps) {
int errorout = 0;
for(i = deps; i && !errorout; i = i->next) {
pmdepmissing_t *miss = i->data;
int found = 0;
pmsyncpkg_t *sync;
pmpkg_t *local;
_alpm_log(PM_LOG_DEBUG, _("package '%s' conflicts with '%s'"),
miss->target, miss->depend.name);
/* check if the conflicting package is one that's about to be removed/replaced.
* if so, then just ignore it
*/
for(j = trans->packages; j && !found; j = j->next) {
sync = j->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
if(_alpm_pkg_find(miss->depend.name, sync->data)) {
found = 1;
}
}
}
if(found) {
_alpm_log(PM_LOG_DEBUG, _("'%s' is already elected for removal -- skipping"),
miss->depend.name);
continue;
}
sync = _alpm_sync_find(trans->packages, miss->target);
if(sync == NULL) {
_alpm_log(PM_LOG_DEBUG, _("'%s' not found in transaction set -- skipping"),
miss->target);
continue;
}
local = _alpm_db_get_pkgfromcache(db_local, miss->depend.name);
/* check if this package also "provides" the package it's conflicting with
*/
if(alpm_list_find_str(alpm_pkg_get_provides(sync->pkg), miss->depend.name)) {
/* so just treat it like a "replaces" item so the REQUIREDBY
* fields are inherited properly.
*/
_alpm_log(PM_LOG_DEBUG, _("package '%s' provides its own conflict"), miss->target);
if(local) {
/* nothing to do for now: it will be handled later
* (not the same behavior as in pacman 2.x) */
} else {
char *rmpkg = NULL;
int target, depend;
/* hmmm, depend.name isn't installed, so it must be conflicting
* with another package in our final list. For example:
*
* pacman -S blackbox xfree86
*
* If no x-servers are installed and blackbox pulls in xorg, then
* xorg and xfree86 will conflict with each other. In this case,
* we should follow the user's preference and rip xorg out of final,
* opting for xfree86 instead.
*/
/* figure out which one was requested in targets. If they both were,
* then it's still an unresolvable conflict. */
target = alpm_list_find_str(trans->targets, miss->target);
depend = alpm_list_find_str(trans->targets, miss->depend.name);
if(depend && !target) {
_alpm_log(PM_LOG_DEBUG, _("'%s' is in the target list -- keeping it"),
miss->depend.name);
/* remove miss->target */
rmpkg = miss->target;
} else if(target && !depend) {
_alpm_log(PM_LOG_DEBUG, _("'%s' is in the target list -- keeping it"),
miss->target);
/* remove miss->depend.name */
rmpkg = miss->depend.name;
} else {
/* miss->depend.name is not needed, miss->target already provides
* it, let's resolve the conflict */
rmpkg = miss->depend.name;
}
if(rmpkg) {
pmsyncpkg_t *rsync = _alpm_sync_find(trans->packages, rmpkg);
void *vpkg;
_alpm_log(PM_LOG_DEBUG, _("removing '%s' from target list"), rsync->pkg->name);
trans->packages = alpm_list_remove(trans->packages, rsync, syncpkg_cmp, &vpkg);
_alpm_sync_free(vpkg);
continue;
}
}
}
/* It's a conflict -- see if they want to remove it
*/
_alpm_log(PM_LOG_DEBUG, _("resolving package '%s' conflict"), miss->target);
if(local) {
int doremove = 0;
if(!alpm_list_find_str(asked, miss->depend.name)) {
QUESTION(trans, PM_TRANS_CONV_CONFLICT_PKG, miss->target, miss->depend.name, NULL, &doremove);
asked = alpm_list_add(asked, strdup(miss->depend.name));
if(doremove) {
pmsyncpkg_t *rsync = _alpm_sync_find(trans->packages, miss->depend.name);
pmpkg_t *q = _alpm_pkg_new(miss->depend.name, NULL);
if(q == NULL) {
if(data) {
FREELIST(*data);
}
ret = -1;
goto cleanup;
}
q->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(local));
if(sync->type != PM_SYNC_TYPE_REPLACE) {
/* switch this sync type to REPLACE */
sync->type = PM_SYNC_TYPE_REPLACE;
_alpm_pkg_free(sync->data);
sync->data = NULL;
}
/* append to the replaces list */
_alpm_log(PM_LOG_DEBUG, _("electing '%s' for removal"), miss->depend.name);
sync->data = alpm_list_add(sync->data, q);
if(rsync) {
/* remove it from the target list */
void *vpkg;
_alpm_log(PM_LOG_DEBUG, _("removing '%s' from target list"), miss->depend.name);
trans->packages = alpm_list_remove(trans->packages, rsync, syncpkg_cmp, &vpkg);
_alpm_sync_free(vpkg);
}
} else {
/* abort */
_alpm_log(PM_LOG_ERROR, _("unresolvable package conflicts detected"));
errorout = 1;
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
ret = -1;
goto cleanup;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
}
}
} else {
_alpm_log(PM_LOG_ERROR, _("unresolvable package conflicts detected"));
errorout = 1;
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
ret = -1;
goto cleanup;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
}
}
if(errorout) {
pm_errno = PM_ERR_CONFLICTING_DEPS;
ret = -1;
goto cleanup;
}
FREELIST(deps);
FREELIST(asked);
}
EVENT(trans, PM_TRANS_EVT_INTERCONFLICTS_DONE, NULL, NULL);
}
alpm_list_free(list);
list = NULL;
/* XXX: this fails for cases where a requested package wants
* a dependency that conflicts with an older version of
* the package. It will be removed from final, and the user
* has to re-request it to get it installed properly.
*
* Not gonna happen very often, but should be dealt with...
*/
if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) {
/* Check dependencies of packages in rmtargs and make sure
* we won't be breaking anything by removing them.
* If a broken dep is detected, make sure it's not from a
* package that's in our final (upgrade) list.
*/
/*EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);*/
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
for(j = sync->data; j; j = j->next) {
list = alpm_list_add(list, j->data);
}
}
}
if(list) {
_alpm_log(PM_LOG_DEBUG, _("checking dependencies of packages designated for removal"));
deps = _alpm_checkdeps(trans, db_local, PM_TRANS_TYPE_REMOVE, list);
if(deps) {
int errorout = 0;
for(i = deps; i; i = i->next) {
pmdepmissing_t *miss = i->data;
if(!_alpm_sync_find(trans->packages, miss->depend.name)) {
int pfound = 0;
alpm_list_t *k;
/* If miss->depend.name depends on something that miss->target and a
* package in final both provide, then it's okay... */
pmpkg_t *leavingp = _alpm_db_get_pkgfromcache(db_local, miss->target);
pmpkg_t *conflictp = _alpm_db_get_pkgfromcache(db_local, miss->depend.name);
if(!leavingp || !conflictp) {
_alpm_log(PM_LOG_ERROR, _("something has gone horribly wrong"));
ret = -1;
goto cleanup;
}
/* Look through the upset package's dependencies and try to match one up
* to a provisio from the package we want to remove */
for(k = alpm_pkg_get_depends(conflictp); k && !pfound; k = k->next) {
alpm_list_t *m;
for(m = alpm_pkg_get_provides(leavingp); m && !pfound; m = m->next) {
if(!strcmp(k->data, m->data)) {
/* Found a match -- now look through final for a package that
* provides the same thing. If none are found, then it truly
* is an unresolvable conflict. */
alpm_list_t *n, *o;
for(n = trans->packages; n && !pfound; n = n->next) {
pmsyncpkg_t *sp = n->data;
pmpkg_t *sppkg = sp->pkg;
for(o = alpm_pkg_get_provides(sppkg); o && !pfound; o = o->next) {
if(!strcmp(m->data, o->data)) {
/* found matching provisio -- we're good to go */
_alpm_log(PM_LOG_DEBUG, _("found '%s' as a provision for '%s' -- conflict aborted"),
alpm_pkg_get_name(sppkg), (char *)o->data);
pfound = 1;
}
}
}
}
}
}
if(!pfound) {
if(!errorout) {
errorout = 1;
}
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
ret = -1;
goto cleanup;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
}
}
}
if(errorout) {
pm_errno = PM_ERR_UNSATISFIED_DEPS;
ret = -1;
goto cleanup;
}
FREELIST(deps);
}
}
/*EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);*/
}
#ifndef __sun__
/* check for free space only in case the packages will be extracted */
if(!(trans->flags & PM_TRANS_FLAG_NOCONFLICTS)) {
if(_alpm_check_freespace(trans, data) == -1) {
/* pm_errno is set by check_freespace */
ret = -1;
goto cleanup;
}
}
#endif
cleanup:
alpm_list_free(list);
alpm_list_free(trail);
FREELIST(asked);
return(ret);
}
int _alpm_sync_commit(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t **data)
{
alpm_list_t *i, *j, *files = NULL;
pmtrans_t *tr = NULL;
int replaces = 0, retval = 0;
char ldir[PATH_MAX];
int varcache = 1;
ALPM_LOG_FUNC;
ASSERT(db_local != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
trans->state = STATE_DOWNLOADING;
/* group sync records by repository and download */
snprintf(ldir, PATH_MAX, "%s%s", handle->root, handle->cachedir);
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->data;
if(current == dbs) {
const char *fname = NULL;
char path[PATH_MAX];
fname = alpm_pkg_get_filename(spkg);
if(trans->flags & PM_TRANS_FLAG_PRINTURIS) {
EVENT(trans, PM_TRANS_EVT_PRINTURI, (char *)alpm_db_get_url(current), (char *)fname);
} else {
struct stat buf;
snprintf(path, PATH_MAX, "%s/%s", ldir, fname);
if(stat(path, &buf)) {
/* file is not in the cache dir, so add it to the list */
files = alpm_list_add(files, strdup(fname));
} else {
_alpm_log(PM_LOG_DEBUG, _("%s is already in the cache\n"), fname);
}
}
}
}
if(files) {
struct stat buf;
EVENT(trans, PM_TRANS_EVT_RETRIEVE_START, current->treename, NULL);
if(stat(ldir, &buf)) {
/* no cache directory.... try creating it */
_alpm_log(PM_LOG_WARNING, _("no %s cache exists, creating...\n"), ldir);
alpm_logaction(_("warning: no %s cache exists, creating..."), ldir);
if(_alpm_makepath(ldir)) {
/* couldn't mkdir the cache directory, so fall back to /tmp and unlink
* the package afterwards.
*/
_alpm_log(PM_LOG_WARNING, _("couldn't create package cache, using /tmp instead\n"));
alpm_logaction(_("warning: couldn't create package cache, using /tmp instead"));
snprintf(ldir, PATH_MAX, "%stmp", alpm_option_get_root());
alpm_option_set_cachedir(ldir);
varcache = 0;
}
}
if(_alpm_downloadfiles(current->servers, ldir, files)) {
_alpm_log(PM_LOG_WARNING, _("failed to retrieve some files from %s\n"), current->treename);
RET_ERR(PM_ERR_RETRIEVE, -1);
}
FREELIST(files);
}
}
if(trans->flags & PM_TRANS_FLAG_PRINTURIS) {
return(0);
}
/* Check integrity of files */
EVENT(trans, PM_TRANS_EVT_INTEGRITY_START, NULL, NULL);
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
pmpkg_t *spkg = sync->pkg;
char str[PATH_MAX];
const char *pkgname;
char *md5sum1, *md5sum2, *sha1sum1, *sha1sum2;
char *ptr=NULL;
pkgname = alpm_pkg_get_filename(spkg);
md5sum1 = spkg->md5sum;
sha1sum1 = spkg->sha1sum;
if((md5sum1 == NULL) && (sha1sum1 == NULL)) {
/* TODO wtf is this? malloc'd strings for error messages? */
if((ptr = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
snprintf(ptr, 512, _("can't get md5 or sha1 checksum for package %s\n"), pkgname);
*data = alpm_list_add(*data, ptr);
retval = 1;
continue;
}
snprintf(str, PATH_MAX, "%s%s%s", handle->root, handle->cachedir, pkgname);
md5sum2 = _alpm_MDFile(str);
sha1sum2 = _alpm_SHAFile(str);
if(md5sum2 == NULL && sha1sum2 == NULL) {
if((ptr = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
snprintf(ptr, 512, _("can't get md5 or sha1 checksum for package %s\n"), pkgname);
*data = alpm_list_add(*data, ptr);
retval = 1;
continue;
}
if((strcmp(md5sum1, md5sum2) != 0) && (strcmp(sha1sum1, sha1sum2) != 0)) {
int doremove=0;
if((ptr = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
if(trans->flags & PM_TRANS_FLAG_ALLDEPS) {
doremove=1;
} else {
QUESTION(trans, PM_TRANS_CONV_CORRUPTED_PKG, (char *)pkgname, NULL, NULL, &doremove);
}
if(doremove) {
char str[PATH_MAX];
snprintf(str, PATH_MAX, "%s%s%s", handle->root, handle->cachedir, pkgname);
unlink(str);
snprintf(ptr, 512, _("archive %s was corrupted (bad MD5 or SHA1 checksum)\n"), pkgname);
} else {
snprintf(ptr, 512, _("archive %s is corrupted (bad MD5 or SHA1 checksum)\n"), pkgname);
}
*data = alpm_list_add(*data, ptr);
retval = 1;
}
FREE(md5sum2);
FREE(sha1sum2);
}
if(retval) {
pm_errno = PM_ERR_PKG_CORRUPTED;
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"));
pm_errno = PM_ERR_MEMORY;
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"));
goto error;
}
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
alpm_list_t *j;
for(j = sync->data; j; j = j->next) {
pmpkg_t *pkg = j->data;
if(!_alpm_pkg_find(pkg->name, tr->packages)) {
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"));
if(_alpm_trans_prepare(tr, data) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not prepare removal transaction"));
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"));
goto error;
}
}
_alpm_trans_free(tr);
tr = NULL;
/* install targets */
_alpm_log(PM_LOG_DEBUG, _("installing packages"));
tr = _alpm_trans_new();
if(tr == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not create transaction"));
pm_errno = PM_ERR_MEMORY;
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"));
goto error;
}
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
pmpkg_t *spkg = sync->pkg;
const char *fname = NULL;
char str[PATH_MAX];
fname = alpm_pkg_get_filename(spkg);
snprintf(str, PATH_MAX, "%s%s%s", handle->root, handle->cachedir, fname);
if(_alpm_trans_addtarget(tr, str) == -1) {
goto error;
}
/* 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;
if(sync->type == PM_SYNC_TYPE_DEPEND) {
spkg->reason = PM_PKG_REASON_DEPEND;
}
}
if(_alpm_trans_prepare(tr, data) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not prepare transaction"));
/* 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"));
goto error;
}
_alpm_trans_free(tr);
tr = NULL;
/* propagate replaced packages' requiredby fields to their new owners */
if(replaces) {
_alpm_log(PM_LOG_DEBUG, _("updating database for replaced packages' dependencies"));
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
alpm_list_t *j;
pmpkg_t *new = _alpm_db_get_pkgfromcache(db_local, alpm_pkg_get_name(sync->pkg));
for(j = sync->data; j; j = j->next) {
alpm_list_t *k;
pmpkg_t *old = j->data;
/* merge lists */
for(k = alpm_pkg_get_requiredby(old); k; k = k->next) {
if(!alpm_list_find_str(alpm_pkg_get_requiredby(new), k->data)) {
/* replace old's name with new's name in the requiredby's dependency list */
alpm_list_t *m;
pmpkg_t *depender = _alpm_db_get_pkgfromcache(db_local, k->data);
if(depender == NULL) {
/* If the depending package no longer exists in the local db,
* then it must have ALSO conflicted with sync->pkg. If
* that's the case, then we don't have anything to propagate
* here. */
continue;
}
for(m = alpm_pkg_get_depends(depender); m; m = m->next) {
if(!strcmp(m->data, alpm_pkg_get_name(old))) {
FREE(m->data);
m->data = strdup(alpm_pkg_get_name(new));
}
}
if(_alpm_db_write(db_local, depender, INFRQ_DEPENDS) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not update requiredby for database entry %s-%s"),
alpm_pkg_get_name(new), alpm_pkg_get_version(new));
}
/* add the new requiredby */
new->requiredby = alpm_list_add(alpm_pkg_get_requiredby(new), strdup(k->data));
}
}
}
if(_alpm_db_write(db_local, new, INFRQ_DEPENDS) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not update new database entry %s-%s"),
alpm_pkg_get_name(new), alpm_pkg_get_version(new));
}
}
}
}
if(!varcache && !(trans->flags & PM_TRANS_FLAG_DOWNLOADONLY)) {
/* delete packages */
for(i = files; i; i = i->next) {
unlink(i->data);
}
}
/* run ldconfig if it exists */
if(handle->trans->state != STATE_INTERRUPTED) {
_alpm_log(PM_LOG_DEBUG, _("running \"ldconfig -r %s\""), handle->root);
_alpm_ldconfig(handle->root);
}
return(0);
error:
_alpm_trans_free(tr);
tr = NULL;
/* commiting failed, so this is still just a prepared transaction */
trans->state = STATE_PREPARED;
return(-1);
}
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) {
_alpm_log(PM_LOG_DEBUG, _("found package '%s-%s' in sync"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
return(syncpkg);
}
}
_alpm_log(PM_LOG_DEBUG, _("package '%s' not found in sync"), pkgname);
return(NULL); /* not found */
}
pmsynctype_t SYMEXPORT alpm_sync_get_type(pmsyncpkg_t *sync)
{
/* Sanity checks */
ASSERT(sync != NULL, return(-1));
return sync->type;
}
pmpkg_t SYMEXPORT *alpm_sync_get_pkg(pmsyncpkg_t *sync)
{
/* Sanity checks */
ASSERT(sync != NULL, return(NULL));
return sync->pkg;
}
void SYMEXPORT *alpm_sync_get_data(pmsyncpkg_t *sync)
{
/* Sanity checks */
ASSERT(sync != NULL, return(NULL));
return sync->data;
}
/* vim: set ts=2 sw=2 noet: */
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