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pacman/lib/libalpm/package.c
Allan McRae 7680f46157 Deal with unused function parameters correctly
This started off removing the "(void)foo" hacks to work around
unused function parameters and ended up fixing every warning
generated by -Wunused-parameter.

Dan: rename to UNUSED.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-05-04 15:53:49 -05:00

573 lines
15 KiB
C

/*
* package.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, 2006 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 <stdlib.h>
#include <string.h>
#include <sys/types.h>
/* libalpm */
#include "package.h"
#include "alpm_list.h"
#include "log.h"
#include "util.h"
#include "db.h"
#include "delta.h"
#include "handle.h"
#include "deps.h"
/** \addtogroup alpm_packages Package Functions
* @brief Functions to manipulate libalpm packages
* @{
*/
/** Free a package. */
int SYMEXPORT alpm_pkg_free(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Only free packages loaded in user space */
if(pkg->origin == PKG_FROM_FILE) {
_alpm_pkg_free(pkg);
}
return 0;
}
/** Check the integrity (with md5) of a package from the sync cache. */
int SYMEXPORT alpm_pkg_checkmd5sum(pmpkg_t *pkg)
{
char *fpath;
int retval;
ALPM_LOG_FUNC;
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* We only inspect packages from sync repositories */
ASSERT(pkg->origin == PKG_FROM_SYNCDB, RET_ERR(PM_ERR_PKG_INVALID, -1));
fpath = _alpm_filecache_find(alpm_pkg_get_filename(pkg));
retval = _alpm_test_md5sum(fpath, alpm_pkg_get_md5sum(pkg));
if(retval == 0) {
return 0;
} else if(retval == 1) {
pm_errno = PM_ERR_PKG_INVALID;
retval = -1;
}
return retval;
}
/* Default package accessor functions. These will get overridden by any
* backend logic that needs lazy access, such as the local database through
* a lazy-load cache. However, the defaults will work just fine for fully-
* populated package structures. */
static const char *_pkg_get_filename(pmpkg_t *pkg) { return pkg->filename; }
static const char *_pkg_get_desc(pmpkg_t *pkg) { return pkg->desc; }
static const char *_pkg_get_url(pmpkg_t *pkg) { return pkg->url; }
static time_t _pkg_get_builddate(pmpkg_t *pkg) { return pkg->builddate; }
static time_t _pkg_get_installdate(pmpkg_t *pkg) { return pkg->installdate; }
static const char *_pkg_get_packager(pmpkg_t *pkg) { return pkg->packager; }
static const char *_pkg_get_md5sum(pmpkg_t *pkg) { return pkg->md5sum; }
static const char *_pkg_get_arch(pmpkg_t *pkg) { return pkg->arch; }
static off_t _pkg_get_size(pmpkg_t *pkg) { return pkg->size; }
static off_t _pkg_get_isize(pmpkg_t *pkg) { return pkg->isize; }
static pmpkgreason_t _pkg_get_reason(pmpkg_t *pkg) { return pkg->reason; }
static int _pkg_has_scriptlet(pmpkg_t *pkg) { return pkg->scriptlet; }
static alpm_list_t *_pkg_get_licenses(pmpkg_t *pkg) { return pkg->licenses; }
static alpm_list_t *_pkg_get_groups(pmpkg_t *pkg) { return pkg->groups; }
static alpm_list_t *_pkg_get_depends(pmpkg_t *pkg) { return pkg->depends; }
static alpm_list_t *_pkg_get_optdepends(pmpkg_t *pkg) { return pkg->optdepends; }
static alpm_list_t *_pkg_get_conflicts(pmpkg_t *pkg) { return pkg->conflicts; }
static alpm_list_t *_pkg_get_provides(pmpkg_t *pkg) { return pkg->provides; }
static alpm_list_t *_pkg_get_replaces(pmpkg_t *pkg) { return pkg->replaces; }
static alpm_list_t *_pkg_get_deltas(pmpkg_t *pkg) { return pkg->deltas; }
static alpm_list_t *_pkg_get_files(pmpkg_t *pkg) { return pkg->files; }
static alpm_list_t *_pkg_get_backup(pmpkg_t *pkg) { return pkg->backup; }
static void *_pkg_changelog_open(pmpkg_t UNUSED *pkg)
{
return NULL;
}
static size_t _pkg_changelog_read(void UNUSED *ptr, size_t UNUSEDsize,
const pmpkg_t UNUSED *pkg, const UNUSED void *fp)
{
return 0;
}
static int _pkg_changelog_close(const pmpkg_t UNUSED *pkg,
void UNUSED *fp)
{
return EOF;
}
/** The standard package operations struct. Get fields directly from the
* struct itself with no abstraction layer or any type of lazy loading.
*/
struct pkg_operations default_pkg_ops = {
.get_filename = _pkg_get_filename,
.get_desc = _pkg_get_desc,
.get_url = _pkg_get_url,
.get_builddate = _pkg_get_builddate,
.get_installdate = _pkg_get_installdate,
.get_packager = _pkg_get_packager,
.get_md5sum = _pkg_get_md5sum,
.get_arch = _pkg_get_arch,
.get_size = _pkg_get_size,
.get_isize = _pkg_get_isize,
.get_reason = _pkg_get_reason,
.has_scriptlet = _pkg_has_scriptlet,
.get_licenses = _pkg_get_licenses,
.get_groups = _pkg_get_groups,
.get_depends = _pkg_get_depends,
.get_optdepends = _pkg_get_optdepends,
.get_conflicts = _pkg_get_conflicts,
.get_provides = _pkg_get_provides,
.get_replaces = _pkg_get_replaces,
.get_deltas = _pkg_get_deltas,
.get_files = _pkg_get_files,
.get_backup = _pkg_get_backup,
.changelog_open = _pkg_changelog_open,
.changelog_read = _pkg_changelog_read,
.changelog_close = _pkg_changelog_close,
};
/* Public functions for getting package information. These functions
* delegate the hard work to the function callbacks attached to each
* package, which depend on where the package was loaded from. */
const char SYMEXPORT *alpm_pkg_get_filename(pmpkg_t *pkg)
{
return pkg->ops->get_filename(pkg);
}
const char SYMEXPORT *alpm_pkg_get_name(pmpkg_t *pkg)
{
return pkg->name;
}
const char SYMEXPORT *alpm_pkg_get_version(pmpkg_t *pkg)
{
return pkg->version;
}
const char SYMEXPORT *alpm_pkg_get_desc(pmpkg_t *pkg)
{
return pkg->ops->get_desc(pkg);
}
const char SYMEXPORT *alpm_pkg_get_url(pmpkg_t *pkg)
{
return pkg->ops->get_url(pkg);
}
time_t SYMEXPORT alpm_pkg_get_builddate(pmpkg_t *pkg)
{
return pkg->ops->get_builddate(pkg);
}
time_t SYMEXPORT alpm_pkg_get_installdate(pmpkg_t *pkg)
{
return pkg->ops->get_installdate(pkg);
}
const char SYMEXPORT *alpm_pkg_get_packager(pmpkg_t *pkg)
{
return pkg->ops->get_packager(pkg);
}
const char SYMEXPORT *alpm_pkg_get_md5sum(pmpkg_t *pkg)
{
return pkg->ops->get_md5sum(pkg);
}
const char SYMEXPORT *alpm_pkg_get_arch(pmpkg_t *pkg)
{
return pkg->ops->get_arch(pkg);
}
off_t SYMEXPORT alpm_pkg_get_size(pmpkg_t *pkg)
{
return pkg->ops->get_size(pkg);
}
off_t SYMEXPORT alpm_pkg_get_isize(pmpkg_t *pkg)
{
return pkg->ops->get_isize(pkg);
}
pmpkgreason_t SYMEXPORT alpm_pkg_get_reason(pmpkg_t *pkg)
{
return pkg->ops->get_reason(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_licenses(pmpkg_t *pkg)
{
return pkg->ops->get_licenses(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_groups(pmpkg_t *pkg)
{
return pkg->ops->get_groups(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_depends(pmpkg_t *pkg)
{
return pkg->ops->get_depends(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_optdepends(pmpkg_t *pkg)
{
return pkg->ops->get_optdepends(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_conflicts(pmpkg_t *pkg)
{
return pkg->ops->get_conflicts(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_provides(pmpkg_t *pkg)
{
return pkg->ops->get_provides(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_replaces(pmpkg_t *pkg)
{
return pkg->ops->get_replaces(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_deltas(pmpkg_t *pkg)
{
return pkg->ops->get_deltas(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_files(pmpkg_t *pkg)
{
return pkg->ops->get_files(pkg);
}
alpm_list_t SYMEXPORT *alpm_pkg_get_backup(pmpkg_t *pkg)
{
return pkg->ops->get_backup(pkg);
}
pmdb_t SYMEXPORT *alpm_pkg_get_db(pmpkg_t *pkg)
{
/* Sanity checks */
ASSERT(pkg != NULL, return NULL);
ASSERT(pkg->origin != PKG_FROM_FILE, return NULL);
return pkg->origin_data.db;
}
/** Open a package changelog for reading. */
void SYMEXPORT *alpm_pkg_changelog_open(pmpkg_t *pkg)
{
return pkg->ops->changelog_open(pkg);
}
/** Read data from an open changelog 'file stream'. */
size_t SYMEXPORT alpm_pkg_changelog_read(void *ptr, size_t size,
const pmpkg_t *pkg, const void *fp)
{
return pkg->ops->changelog_read(ptr, size, pkg, fp);
}
/*
int SYMEXPORT alpm_pkg_changelog_feof(const pmpkg_t *pkg, void *fp)
{
return pkg->ops->changelog_feof(pkg, fp);
}
*/
/** Close a package changelog for reading. */
int SYMEXPORT alpm_pkg_changelog_close(const pmpkg_t *pkg, void *fp)
{
return pkg->ops->changelog_close(pkg, fp);
}
int SYMEXPORT alpm_pkg_has_scriptlet(pmpkg_t *pkg)
{
return pkg->ops->has_scriptlet(pkg);
}
static void find_requiredby(pmpkg_t *pkg, pmdb_t *db, alpm_list_t **reqs)
{
const alpm_list_t *i;
for(i = _alpm_db_get_pkgcache(db); i; i = i->next) {
pmpkg_t *cachepkg = i->data;
alpm_list_t *i;
for(i = alpm_pkg_get_depends(cachepkg); i; i = i->next) {
if(_alpm_depcmp(pkg, i->data)) {
const char *cachepkgname = cachepkg->name;
if(alpm_list_find_str(*reqs, cachepkgname) == NULL) {
*reqs = alpm_list_add(*reqs, strdup(cachepkgname));
}
}
}
}
}
/** Compute the packages requiring a given package. */
alpm_list_t SYMEXPORT *alpm_pkg_compute_requiredby(pmpkg_t *pkg)
{
const alpm_list_t *i;
alpm_list_t *reqs = NULL;
pmdb_t *db;
if(pkg->origin == PKG_FROM_FILE) {
/* The sane option; search locally for things that require this. */
db = alpm_option_get_localdb();
find_requiredby(pkg, db, &reqs);
} else {
/* We have a DB package. if it is a local package, then we should
* only search the local DB; else search all known sync databases. */
db = pkg->origin_data.db;
if(db->is_local) {
find_requiredby(pkg, db, &reqs);
} else {
for(i = handle->dbs_sync; i; i = i->next) {
db = i->data;
find_requiredby(pkg, db, &reqs);
}
reqs = alpm_list_msort(reqs, alpm_list_count(reqs), _alpm_str_cmp);
}
}
return reqs;
}
/** @} */
pmpkg_t *_alpm_pkg_new(void)
{
pmpkg_t* pkg;
ALPM_LOG_FUNC;
CALLOC(pkg, 1, sizeof(pmpkg_t), RET_ERR(PM_ERR_MEMORY, NULL));
return pkg;
}
pmpkg_t *_alpm_pkg_dup(pmpkg_t *pkg)
{
pmpkg_t *newpkg;
alpm_list_t *i;
ALPM_LOG_FUNC;
CALLOC(newpkg, 1, sizeof(pmpkg_t), RET_ERR(PM_ERR_MEMORY, NULL));
newpkg->name_hash = pkg->name_hash;
STRDUP(newpkg->filename, pkg->filename, RET_ERR(PM_ERR_MEMORY, newpkg));
STRDUP(newpkg->name, pkg->name, RET_ERR(PM_ERR_MEMORY, newpkg));
STRDUP(newpkg->version, pkg->version, RET_ERR(PM_ERR_MEMORY, newpkg));
STRDUP(newpkg->desc, pkg->desc, RET_ERR(PM_ERR_MEMORY, newpkg));
STRDUP(newpkg->url, pkg->url, RET_ERR(PM_ERR_MEMORY, newpkg));
newpkg->builddate = pkg->builddate;
newpkg->installdate = pkg->installdate;
STRDUP(newpkg->packager, pkg->packager, RET_ERR(PM_ERR_MEMORY, newpkg));
STRDUP(newpkg->md5sum, pkg->md5sum, RET_ERR(PM_ERR_MEMORY, newpkg));
STRDUP(newpkg->arch, pkg->arch, RET_ERR(PM_ERR_MEMORY, newpkg));
newpkg->size = pkg->size;
newpkg->isize = pkg->isize;
newpkg->scriptlet = pkg->scriptlet;
newpkg->reason = pkg->reason;
newpkg->licenses = alpm_list_strdup(pkg->licenses);
newpkg->replaces = alpm_list_strdup(pkg->replaces);
newpkg->groups = alpm_list_strdup(pkg->groups);
newpkg->files = alpm_list_strdup(pkg->files);
newpkg->backup = alpm_list_strdup(pkg->backup);
for(i = pkg->depends; i; i = alpm_list_next(i)) {
newpkg->depends = alpm_list_add(newpkg->depends, _alpm_dep_dup(i->data));
}
newpkg->optdepends = alpm_list_strdup(pkg->optdepends);
newpkg->conflicts = alpm_list_strdup(pkg->conflicts);
newpkg->provides = alpm_list_strdup(pkg->provides);
newpkg->deltas = alpm_list_copy_data(pkg->deltas, sizeof(pmdelta_t));
/* internal */
newpkg->origin = pkg->origin;
newpkg->ops = pkg->ops;
if(newpkg->origin == PKG_FROM_FILE) {
newpkg->origin_data.file = strdup(pkg->origin_data.file);
} else {
newpkg->origin_data.db = pkg->origin_data.db;
}
newpkg->infolevel = pkg->infolevel;
return newpkg;
}
void _alpm_pkg_free(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
if(pkg == NULL) {
return;
}
FREE(pkg->filename);
FREE(pkg->name);
FREE(pkg->version);
FREE(pkg->desc);
FREE(pkg->url);
FREE(pkg->packager);
FREE(pkg->md5sum);
FREE(pkg->base64_sig);
FREE(pkg->arch);
FREELIST(pkg->licenses);
FREELIST(pkg->replaces);
FREELIST(pkg->groups);
FREELIST(pkg->files);
FREELIST(pkg->backup);
alpm_list_free_inner(pkg->depends, (alpm_list_fn_free)_alpm_dep_free);
alpm_list_free(pkg->depends);
FREELIST(pkg->optdepends);
FREELIST(pkg->conflicts);
FREELIST(pkg->provides);
alpm_list_free_inner(pkg->deltas, (alpm_list_fn_free)_alpm_delta_free);
alpm_list_free(pkg->deltas);
alpm_list_free(pkg->delta_path);
alpm_list_free(pkg->removes);
if(pkg->origin == PKG_FROM_FILE) {
FREE(pkg->origin_data.file);
}
FREE(pkg);
}
/* This function should be used when removing a target from upgrade/sync target list
* Case 1: If pkg is a loaded package file (PKG_FROM_FILE), it will be freed.
* Case 2: If pkg is a pkgcache entry (PKG_FROM_CACHE), it won't be freed,
* only the transaction specific fields of pkg will be freed.
*/
void _alpm_pkg_free_trans(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
if(pkg == NULL) {
return;
}
if(pkg->origin == PKG_FROM_FILE) {
_alpm_pkg_free(pkg);
return;
}
alpm_list_free(pkg->removes);
pkg->removes = NULL;
}
/* Is spkg an upgrade for localpkg? */
int _alpm_pkg_compare_versions(pmpkg_t *spkg, pmpkg_t *localpkg)
{
ALPM_LOG_FUNC;
return alpm_pkg_vercmp(alpm_pkg_get_version(spkg),
alpm_pkg_get_version(localpkg));
}
/* Helper function for comparing packages
*/
int _alpm_pkg_cmp(const void *p1, const void *p2)
{
pmpkg_t *pkg1 = (pmpkg_t *)p1;
pmpkg_t *pkg2 = (pmpkg_t *)p2;
return strcoll(pkg1->name, pkg2->name);
}
/* Test for existence of a package in a alpm_list_t*
* of pmpkg_t*
*/
pmpkg_t *_alpm_pkg_find(alpm_list_t *haystack, const char *needle)
{
alpm_list_t *lp;
unsigned long needle_hash;
ALPM_LOG_FUNC;
if(needle == NULL || haystack == NULL) {
return NULL;
}
needle_hash = _alpm_hash_sdbm(needle);
for(lp = haystack; lp; lp = lp->next) {
pmpkg_t *info = lp->data;
if(info) {
/* a zero hash will cause a fall-through just in case */
if(info->name_hash && info->name_hash != needle_hash) {
continue;
}
/* finally: we had hash match, verify string match */
if(strcmp(info->name, needle) == 0) {
return info;
}
}
}
return NULL;
}
/** Test if a package should be ignored.
*
* Checks if the package is ignored via IgnorePkg, or if the package is
* in a group ignored via IgnoreGrp.
*
* @param pkg the package to test
*
* @return 1 if the package should be ignored, 0 otherwise
*/
int _alpm_pkg_should_ignore(pmpkg_t *pkg)
{
alpm_list_t *groups = NULL;
/* first see if the package is ignored */
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(pkg))) {
return 1;
}
/* next see if the package is in a group that is ignored */
for(groups = handle->ignoregrp; groups; groups = alpm_list_next(groups)) {
char *grp = (char *)alpm_list_getdata(groups);
if(alpm_list_find_str(alpm_pkg_get_groups(pkg), grp)) {
return 1;
}
}
return 0;
}
/* vim: set ts=2 sw=2 noet: */