int _alpm_depcmp(alpm_pkg_t *pkg, alpm_depend_t *dep)
{
alpm_list_t *i;
int satisfy = _alpm_depcmp_literal(pkg, dep);
if(satisfy) {
return satisfy;
}
/* check provisions, name and version if available */
for(i = alpm_pkg_get_provides(pkg); i && !satisfy; i = i->next) {
alpm_depend_t *provision = i->data;
if(dep->mod == ALPM_DEP_MOD_ANY) {
/* any version will satisfy the requirement */
satisfy = (provision->name_hash == dep->name_hash
&& strcmp(provision->name, dep->name) == 0);
} else if(provision->mod == ALPM_DEP_MOD_EQ) {
/* provision specifies a version, so try it out */
satisfy = (provision->name_hash == dep->name_hash
&& strcmp(provision->name, dep->name) == 0
&& dep_vercmp(provision->version, dep->mod, dep->version));
}
}
return satisfy;
}
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 in %s\n",
lpkg->name, sdb->treename);
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;
}
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 in %s\n",
lpkg->name, sdb->treename);
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) {
alpm_question_replace_t question = {
.type = ALPM_QUESTION_REPLACE_PKG,
.replace = 0,
.oldpkg = lpkg,
.newpkg = spkg,
.newdb = sdb
};
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, &question);
if(!question.replace) {
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->remove, lpkg->name)) {
_alpm_log(handle, ALPM_LOG_DEBUG, "%s is marked for removal -- skipping\n", lpkg->name);
continue;
}
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 replacers then literal (if no replacer) in each sync database. */
for(j = handle->dbs_sync; j; j = j->next) {
alpm_db_t *sdb = j->data;
alpm_list_t *replacers;
if(!(sdb->usage & ALPM_DB_USAGE_UPGRADE)) {
continue;
}
/* Check sdb */
replacers = check_replacers(handle, lpkg, sdb);
if(replacers) {
trans->add = alpm_list_join(trans->add, replacers);
/* jump to next local package */
break;
} else {
alpm_pkg_t *spkg = _alpm_db_get_pkgfromcache(sdb, lpkg->name);
if(spkg) {
if(check_literal(handle, lpkg, spkg, enable_downgrade)) {
trans->add = alpm_list_add(trans->add, spkg);
}
/* jump to next local package */
break;
}
}
}
}
return 0;
}
int _alpm_depcmp(alpm_pkg_t *pkg, alpm_depend_t *dep)
{
return _alpm_depcmp_literal(pkg, dep)
|| _alpm_depcmp_provides(dep, alpm_pkg_get_provides(pkg));
}
