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pacman/lib/libalpm/package.c
Aaron Griffin 47622eef4d Support for localized times in metadata 
Packages and DBs now support using the UNIX epoch (seconds since Jan 1, 1970)
for use in builddate and installdate. This will only affect newly built
packages. Old existing packages with the text format are still supported, but
this is deprecated.

In the case of removal of text time support, this code will fail gracefully,
returning the start of the epoch for broken packages.

Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>
2007-09-28 00:25:57 -05:00

1106 lines
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/*
* package.c
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
/* libarchive */
#include <archive.h>
#include <archive_entry.h>
/* libalpm */
#include "package.h"
#include "alpm_list.h"
#include "log.h"
#include "util.h"
#include "error.h"
#include "db.h"
#include "cache.h"
#include "provide.h"
#include "handle.h"
#include "alpm.h"
/** \addtogroup alpm_packages Package Functions
* @brief Functions to manipulate libalpm packages
* @{
*/
/** Create a package from a file.
* @param filename location of the package tarball
* @param full whether to stop the load after metadata is read or continue
* through the full archive
* @param pkg address of the package pointer
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_pkg_load(const char *filename, unsigned short full,
pmpkg_t **pkg)
{
_alpm_log(PM_LOG_FUNCTION, "enter alpm_pkg_load\n");
/* Sanity checks */
ASSERT(filename != NULL && strlen(filename) != 0,
RET_ERR(PM_ERR_WRONG_ARGS, -1));
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
*pkg = _alpm_pkg_load(filename, full);
if(*pkg == NULL) {
/* pm_errno is set by pkg_load */
return(-1);
}
return(0);
}
/** Free a package.
* @param pkg package pointer to free
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_pkg_free(pmpkg_t *pkg)
{
_alpm_log(PM_LOG_FUNCTION, "enter alpm_pkg_free\n");
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Only free packages loaded in user space */
if(pkg->origin != PKG_FROM_CACHE) {
_alpm_pkg_free(pkg);
}
return(0);
}
/** Check the integrity (with md5) of a package from the sync cache.
* @param pkg package pointer
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_pkg_checkmd5sum(pmpkg_t *pkg)
{
char *fpath;
char *md5sum = NULL;
int retval = 0;
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_CACHE, RET_ERR(PM_ERR_PKG_INVALID, -1));
ASSERT(pkg->origin_data.db != handle->db_local, RET_ERR(PM_ERR_PKG_INVALID, -1));
fpath = _alpm_filecache_find(alpm_pkg_get_filename(pkg));
md5sum = alpm_get_md5sum(fpath);
if(md5sum == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not get md5sum for package %s-%s\n"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
pm_errno = PM_ERR_NOT_A_FILE;
retval = -1;
} else {
if(strcmp(md5sum, alpm_pkg_get_md5sum(pkg)) == 0) {
_alpm_log(PM_LOG_DEBUG, "md5sums for package %s-%s match\n",
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
} else {
_alpm_log(PM_LOG_ERROR, _("md5sums do not match for package %s-%s\n"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
pm_errno = PM_ERR_PKG_INVALID;
retval = -1;
}
}
FREE(fpath);
FREE(md5sum);
return(retval);
}
/** Compare versions.
* @param ver1 first version
* @param ver2 secont version
* @return postive, 0 or negative if ver1 is less, equal or more
* than ver2, respectively.
*/
int SYMEXPORT alpm_pkg_vercmp(const char *ver1, const char *ver2)
{
ALPM_LOG_FUNC;
return(_alpm_versioncmp(ver1, ver2));
}
const char SYMEXPORT *alpm_pkg_get_filename(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(!strlen(pkg->filename)) {
/* construct the file name, it's not in the desc file */
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
if(pkg->arch && strlen(pkg->arch) > 0) {
snprintf(pkg->filename, PKG_FILENAME_LEN, "%s-%s-%s" PKGEXT,
pkg->name, pkg->version, pkg->arch);
} else {
snprintf(pkg->filename, PKG_FILENAME_LEN, "%s-%s" PKGEXT,
pkg->name, pkg->version);
}
}
return pkg->filename;
}
const char SYMEXPORT *alpm_pkg_get_name(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_BASE)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_BASE);
}
return pkg->name;
}
const char SYMEXPORT *alpm_pkg_get_version(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_BASE)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_BASE);
}
return pkg->version;
}
const char SYMEXPORT *alpm_pkg_get_desc(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->desc;
}
const char SYMEXPORT *alpm_pkg_get_url(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->url;
}
time_t SYMEXPORT alpm_pkg_get_builddate(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(0));
ASSERT(pkg != NULL, return(0));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->builddate;
}
time_t SYMEXPORT alpm_pkg_get_installdate(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(0));
ASSERT(pkg != NULL, return(0));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->installdate;
}
const char SYMEXPORT *alpm_pkg_get_packager(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->packager;
}
const char SYMEXPORT *alpm_pkg_get_md5sum(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->md5sum;
}
const char SYMEXPORT *alpm_pkg_get_arch(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->arch;
}
unsigned long SYMEXPORT alpm_pkg_get_size(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
ASSERT(pkg != NULL, return(-1));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->size;
}
unsigned long SYMEXPORT alpm_pkg_get_isize(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
ASSERT(pkg != NULL, return(-1));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->isize;
}
pmpkgreason_t SYMEXPORT alpm_pkg_get_reason(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
ASSERT(pkg != NULL, return(-1));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->reason;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_licenses(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->licenses;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_groups(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->groups;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_depends(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DEPENDS)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DEPENDS);
}
return pkg->depends;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_optdepends(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DEPENDS)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DEPENDS);
}
return pkg->optdepends;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_requiredby(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DEPENDS)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DEPENDS);
}
return pkg->requiredby;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_conflicts(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DEPENDS)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DEPENDS);
}
return pkg->conflicts;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_provides(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DEPENDS)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DEPENDS);
}
return pkg->provides;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_replaces(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->replaces;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_files(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && pkg->origin_data.db == handle->db_local
&& !(pkg->infolevel & INFRQ_FILES)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_FILES);
}
return pkg->files;
}
alpm_list_t SYMEXPORT *alpm_pkg_get_backup(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE && pkg->origin_data.db == handle->db_local
&& !(pkg->infolevel & INFRQ_FILES)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_FILES);
}
return pkg->backup;
}
unsigned short SYMEXPORT alpm_pkg_has_scriptlet(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
ASSERT(pkg != NULL, return(-1));
if(pkg->origin == PKG_FROM_CACHE && pkg->origin_data.db == handle->db_local
&& !(pkg->infolevel & INFRQ_SCRIPTLET)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_SCRIPTLET);
}
return pkg->scriptlet;
}
/**
* @brief Compute the packages requiring a given package.
* @param pkg a package
* @return the list of packages requiring pkg
*
* A depends on B through n depends <=> A listed in B's requiredby n times
* n == 0 or 1 in almost all cases */
alpm_list_t SYMEXPORT *alpm_pkg_compute_requiredby(pmpkg_t *pkg)
{
const alpm_list_t *i, *j;
alpm_list_t *reqs = NULL;
pmdb_t *localdb = alpm_option_get_localdb();
for(i = _alpm_db_get_pkgcache(localdb); i; i = i->next) {
if(!i->data) {
continue;
}
pmpkg_t *cachepkg = i->data;
const char *cachepkgname = alpm_pkg_get_name(cachepkg);
for(j = alpm_pkg_get_depends(cachepkg); j; j = j->next) {
pmdepend_t *dep;
int satisfies;
if(!j->data) {
continue;
}
dep = alpm_splitdep(j->data);
if(dep == NULL) {
continue;
}
satisfies = alpm_depcmp(pkg, dep);
FREE(dep);
if(satisfies) {
_alpm_log(PM_LOG_DEBUG, "adding '%s' in requiredby field for '%s'\n",
cachepkgname, pkg->name);
reqs = alpm_list_add(reqs, strdup(cachepkgname));
break;
}
}
}
return(reqs);
}
/** @} */
/* this function was taken from rpm 4.0.4 and rewritten */
int _alpm_versioncmp(const char *a, const char *b)
{
char str1[64], str2[64];
char *ptr1, *ptr2;
char *one, *two;
char *rel1 = NULL, *rel2 = NULL;
char oldch1, oldch2;
int is1num, is2num;
int rc;
ALPM_LOG_FUNC;
if(!strcmp(a,b)) {
return(0);
}
strncpy(str1, a, 64);
str1[63] = 0;
strncpy(str2, b, 64);
str2[63] = 0;
/* lose the release number */
for(one = str1; *one && *one != '-'; one++);
if(one) {
*one = '\0';
rel1 = ++one;
}
for(two = str2; *two && *two != '-'; two++);
if(two) {
*two = '\0';
rel2 = ++two;
}
one = str1;
two = str2;
while(*one || *two) {
while(*one && !isalnum((int)*one)) one++;
while(*two && !isalnum((int)*two)) two++;
ptr1 = one;
ptr2 = two;
/* find the next segment for each string */
if(isdigit((int)*ptr1)) {
is1num = 1;
while(*ptr1 && isdigit((int)*ptr1)) ptr1++;
} else {
is1num = 0;
while(*ptr1 && isalpha((int)*ptr1)) ptr1++;
}
if(isdigit((int)*ptr2)) {
is2num = 1;
while(*ptr2 && isdigit((int)*ptr2)) ptr2++;
} else {
is2num = 0;
while(*ptr2 && isalpha((int)*ptr2)) ptr2++;
}
oldch1 = *ptr1;
*ptr1 = '\0';
oldch2 = *ptr2;
*ptr2 = '\0';
/* see if we ran out of segments on one string */
if(one == ptr1 && two != ptr2) {
return(is2num ? -1 : 1);
}
if(one != ptr1 && two == ptr2) {
return(is1num ? 1 : -1);
}
/* see if we have a type mismatch (ie, one is alpha and one is digits) */
if(is1num && !is2num) return(1);
if(!is1num && is2num) return(-1);
if(is1num) while(*one == '0') one++;
if(is2num) while(*two == '0') two++;
rc = strverscmp(one, two);
if(rc) return(rc);
*ptr1 = oldch1;
*ptr2 = oldch2;
one = ptr1;
two = ptr2;
}
if((!*one) && (!*two)) {
/* compare release numbers */
if(rel1 && rel2 && strlen(rel1) && strlen(rel2)) return(_alpm_versioncmp(rel1, rel2));
return(0);
}
return(*one ? 1 : -1);
}
pmpkg_t *_alpm_pkg_new(const char *name, const char *version)
{
pmpkg_t* pkg;
ALPM_LOG_FUNC;
if((pkg = calloc(1,sizeof(pmpkg_t))) == NULL) {
RET_ERR(PM_ERR_MEMORY, NULL);
}
if(name && name[0] != 0) {
strncpy(pkg->name, name, PKG_NAME_LEN);
} else {
pkg->name[0] = '\0';
}
if(version && version[0] != 0) {
strncpy(pkg->version, version, PKG_VERSION_LEN);
} else {
pkg->version[0] = '\0';
}
return(pkg);
}
pmpkg_t *_alpm_pkg_dup(pmpkg_t *pkg)
{
pmpkg_t* newpkg;
ALPM_LOG_FUNC;
if((newpkg = calloc(1, sizeof(pmpkg_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes\n"), sizeof(pmpkg_t));
RET_ERR(PM_ERR_MEMORY, NULL);
}
memcpy(newpkg, pkg, sizeof(pmpkg_t));
newpkg->licenses = alpm_list_strdup(alpm_pkg_get_licenses(pkg));
newpkg->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(pkg));
newpkg->conflicts = alpm_list_strdup(alpm_pkg_get_conflicts(pkg));
newpkg->files = alpm_list_strdup(alpm_pkg_get_files(pkg));
newpkg->backup = alpm_list_strdup(alpm_pkg_get_backup(pkg));
newpkg->depends = alpm_list_strdup(alpm_pkg_get_depends(pkg));
newpkg->optdepends = alpm_list_strdup(alpm_pkg_get_optdepends(pkg));
newpkg->groups = alpm_list_strdup(alpm_pkg_get_groups(pkg));
newpkg->provides = alpm_list_strdup(alpm_pkg_get_provides(pkg));
newpkg->replaces = alpm_list_strdup(alpm_pkg_get_replaces(pkg));
/* internal */
if(newpkg->origin == PKG_FROM_FILE) {
newpkg->origin_data.file = strdup(pkg->origin_data.file);
} else {
newpkg->origin_data.db = pkg->origin_data.db;
}
return(newpkg);
}
void _alpm_pkg_free(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
if(pkg == NULL) {
return;
}
FREELIST(pkg->licenses);
FREELIST(pkg->files);
FREELIST(pkg->backup);
FREELIST(pkg->depends);
FREELIST(pkg->optdepends);
FREELIST(pkg->conflicts);
FREELIST(pkg->requiredby);
FREELIST(pkg->groups);
FREELIST(pkg->provides);
FREELIST(pkg->replaces);
if(pkg->origin == PKG_FROM_FILE) {
FREE(pkg->origin_data.file);
}
FREE(pkg);
}
/* Is pkgB an upgrade for pkgA ? */
int alpm_pkg_compare_versions(pmpkg_t *local_pkg, pmpkg_t *pkg)
{
int cmp = 0;
ALPM_LOG_FUNC;
if(pkg->origin == PKG_FROM_CACHE) {
/* ensure we have the /desc file, which contains the 'force' option */
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
/* compare versions and see if we need to upgrade */
cmp = _alpm_versioncmp(alpm_pkg_get_version(pkg), alpm_pkg_get_version(local_pkg));
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(pkg))) {
/* package should be ignored (IgnorePkg) */
if(cmp > 0) {
_alpm_log(PM_LOG_WARNING, _("%s-%s: ignoring package upgrade (%s)\n"),
alpm_pkg_get_name(local_pkg), alpm_pkg_get_version(local_pkg),
alpm_pkg_get_version(pkg));
}
return(0);
}
if(cmp != 0 && pkg->force) {
cmp = 1;
_alpm_log(PM_LOG_WARNING, _("%s: forcing upgrade to version %s\n"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
} else if(cmp < 0) {
/* local version is newer */
pmdb_t *db = pkg->origin_data.db;
_alpm_log(PM_LOG_WARNING, _("%s: local (%s) is newer than %s (%s)\n"),
alpm_pkg_get_name(local_pkg), alpm_pkg_get_version(local_pkg),
alpm_db_get_name(db), alpm_pkg_get_version(pkg));
cmp = 0;
} else if(cmp > 0) {
/* we have an upgrade, make sure we should actually do it */
if(_alpm_pkg_istoonew(pkg)) {
/* package too new (UpgradeDelay) */
_alpm_log(PM_LOG_WARNING, _("%s-%s: delaying upgrade of package (%s)\n"),
alpm_pkg_get_name(local_pkg), alpm_pkg_get_version(local_pkg),
alpm_pkg_get_version(pkg));
cmp = 0;
}
}
return(cmp);
}
/* Helper function for comparing packages
*/
int _alpm_pkg_cmp(const void *p1, const void *p2)
{
pmpkg_t *pk1 = (pmpkg_t *)p1;
pmpkg_t *pk2 = (pmpkg_t *)p2;
return(strcmp(alpm_pkg_get_name(pk1), alpm_pkg_get_name(pk2)));
}
/* Parses the package description file for the current package
* TODO: this should ALL be in a backend interface (be_files), we should
* be dealing with the abstracted concepts only in this file
* Returns: 0 on success, 1 on error
*
*/
static int parse_descfile(const char *descfile, pmpkg_t *info)
{
FILE* fp = NULL;
char line[PATH_MAX];
char *ptr = NULL;
char *key = NULL;
int linenum = 0;
ALPM_LOG_FUNC;
if((fp = fopen(descfile, "r")) == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not open file %s: %s\n"), descfile, strerror(errno));
return(-1);
}
while(!feof(fp)) {
fgets(line, PATH_MAX, fp);
linenum++;
_alpm_strtrim(line);
if(strlen(line) == 0 || line[0] == '#') {
continue;
}
ptr = line;
key = strsep(&ptr, "=");
if(key == NULL || ptr == NULL) {
_alpm_log(PM_LOG_DEBUG, "%s: syntax error in description file line %d\n",
info->name[0] != '\0' ? info->name : "error", linenum);
} else {
_alpm_strtrim(key);
_alpm_strtrim(ptr);
if(!strcmp(key, "pkgname")) {
strncpy(info->name, ptr, sizeof(info->name));
} else if(!strcmp(key, "pkgver")) {
strncpy(info->version, ptr, sizeof(info->version));
} else if(!strcmp(key, "pkgdesc")) {
strncpy(info->desc, ptr, sizeof(info->desc));
} else if(!strcmp(key, "group")) {
info->groups = alpm_list_add(info->groups, strdup(ptr));
} else if(!strcmp(key, "url")) {
strncpy(info->url, ptr, sizeof(info->url));
} else if(!strcmp(key, "license")) {
info->licenses = alpm_list_add(info->licenses, strdup(ptr));
} else if(!strcmp(key, "builddate")) {
info->builddate = atol(ptr);
} else if(!strcmp(key, "installdate")) {
info->installdate = atol(ptr);
} else if(!strcmp(key, "packager")) {
strncpy(info->packager, ptr, sizeof(info->packager));
} else if(!strcmp(key, "arch")) {
strncpy(info->arch, ptr, sizeof(info->arch));
} else if(!strcmp(key, "size")) {
/* size in the raw package is uncompressed (installed) size */
info->isize = atol(ptr);
} else if(!strcmp(key, "depend")) {
info->depends = alpm_list_add(info->depends, strdup(ptr));
} else if(!strcmp(key, "optdepend")) {
info->optdepends = alpm_list_add(info->optdepends, strdup(ptr));
} else if(!strcmp(key, "conflict")) {
info->conflicts = alpm_list_add(info->conflicts, strdup(ptr));
} else if(!strcmp(key, "replaces")) {
info->replaces = alpm_list_add(info->replaces, strdup(ptr));
} else if(!strcmp(key, "provides")) {
info->provides = alpm_list_add(info->provides, strdup(ptr));
} else if(!strcmp(key, "backup")) {
info->backup = alpm_list_add(info->backup, strdup(ptr));
} else {
_alpm_log(PM_LOG_DEBUG, "%s: syntax error in description file line %d\n",
info->name[0] != '\0' ? info->name : "error", linenum);
}
}
line[0] = '\0';
}
fclose(fp);
unlink(descfile);
return(0);
}
/**
* Load a package and create the corresponding pmpkg_t struct.
* @param pkgfile path to the package file
* @param full whether to stop the load after metadata is read or continue
* through the full archive
* @return An information filled pmpkg_t struct
*/
pmpkg_t *_alpm_pkg_load(const char *pkgfile, unsigned short full)
{
int ret = ARCHIVE_OK;
int config = 0;
int filelist = 0;
struct archive *archive;
struct archive_entry *entry;
pmpkg_t *info = NULL;
char *descfile = NULL;
int fd = -1;
alpm_list_t *all_files = NULL;
struct stat st;
ALPM_LOG_FUNC;
if(pkgfile == NULL || strlen(pkgfile) == 0) {
RET_ERR(PM_ERR_WRONG_ARGS, NULL);
}
if((archive = archive_read_new()) == NULL) {
RET_ERR(PM_ERR_LIBARCHIVE_ERROR, NULL);
}
archive_read_support_compression_all(archive);
archive_read_support_format_all(archive);
if (archive_read_open_filename(archive, pkgfile,
ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
RET_ERR(PM_ERR_PKG_OPEN, NULL);
}
info = _alpm_pkg_new(NULL, NULL);
if(info == NULL) {
archive_read_finish(archive);
RET_ERR(PM_ERR_MEMORY, NULL);
}
if(stat(pkgfile, &st) == 0) {
info->size = st.st_size;
}
/* TODO there is no reason to make temp files to read
* from a libarchive archive, it can be done by reading
* directly from the archive
* See: archive_read_data_into_buffer
* requires changes 'parse_descfile' as well
* */
/* If full is false, only read through the archive until we find our needed
* metadata. If it is true, read through the entire archive, which serves
* as a verfication of integrity. */
while((ret = archive_read_next_header (archive, &entry)) == ARCHIVE_OK) {
const char *entry_name = archive_entry_pathname(entry);
if(strcmp(entry_name, ".PKGINFO") == 0) {
/* extract this file into /tmp. it has info for us */
descfile = strdup("/tmp/alpm_XXXXXX");
fd = mkstemp(descfile);
archive_read_data_into_fd (archive, fd);
/* parse the info file */
if(parse_descfile(descfile, info) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not parse the package description file\n"));
goto pkg_invalid;
}
if(!strlen(info->name)) {
_alpm_log(PM_LOG_ERROR, _("missing package name in %s\n"), pkgfile);
goto pkg_invalid;
}
if(!strlen(info->version)) {
_alpm_log(PM_LOG_ERROR, _("missing package version in %s\n"), pkgfile);
goto pkg_invalid;
}
config = 1;
unlink(descfile);
FREE(descfile);
close(fd);
continue;
} else if(strcmp(entry_name, ".INSTALL") == 0) {
info->scriptlet = 1;
} else if(strcmp(entry_name, ".FILELIST") == 0) {
/* Build info->files from the filelist */
FILE *fp;
char *fn;
char *str;
int fd;
if((str = malloc(PATH_MAX)) == NULL) {
RET_ERR(PM_ERR_MEMORY, (pmpkg_t *)-1);
}
fn = strdup("/tmp/alpm_XXXXXX");
fd = mkstemp(fn);
archive_read_data_into_fd(archive,fd);
fp = fopen(fn, "r");
while(!feof(fp)) {
if(fgets(str, PATH_MAX, fp) == NULL) {
continue;
}
_alpm_strtrim(str);
info->files = alpm_list_add(info->files, strdup(str));
}
FREE(str);
fclose(fp);
if(unlink(fn)) {
_alpm_log(PM_LOG_WARNING, _("could not remove tempfile %s\n"), fn);
}
FREE(fn);
close(fd);
filelist = 1;
continue;
} else if(*entry_name == '.') {
/* for now, ignore all files starting with '.' that haven't
* already been handled (for future possibilities) */
} else {
/* Keep track of all files so we can generate a filelist later if missing */
all_files = alpm_list_add(all_files, strdup(entry_name));
}
if(archive_read_data_skip(archive)) {
_alpm_log(PM_LOG_ERROR, _("error while reading package: %s\n"), archive_error_string(archive));
pm_errno = PM_ERR_LIBARCHIVE_ERROR;
goto error;
}
/* if we are not doing a full read, see if we have all we need */
if(!full && config && filelist) {
break;
}
}
if(ret != ARCHIVE_EOF && ret != ARCHIVE_OK) { /* An error occured */
_alpm_log(PM_LOG_ERROR, _("error while reading package: %s\n"), archive_error_string(archive));
pm_errno = PM_ERR_LIBARCHIVE_ERROR;
goto error;
}
if(!config) {
_alpm_log(PM_LOG_ERROR, _("missing package metadata\n"), pkgfile);
goto error;
}
archive_read_finish(archive);
if(!filelist) {
_alpm_log(PM_LOG_ERROR, _("missing package filelist in %s, generating one\n"), pkgfile);
info->files = all_files;
} else {
alpm_list_free_inner(all_files, free);
alpm_list_free(all_files);
}
/* this is IMPORTANT - "checking for conflicts" requires a sorted list, so we
* ensure that here */
info->files = alpm_list_msort(info->files, alpm_list_count(info->files), _alpm_str_cmp);
/* internal */
info->origin = PKG_FROM_FILE;
info->origin_data.file = strdup(pkgfile);
info->infolevel = 0xFF;
return(info);
pkg_invalid:
pm_errno = PM_ERR_PKG_INVALID;
if(descfile) {
unlink(descfile);
FREE(descfile);
}
if(fd != -1) {
close(fd);
}
error:
_alpm_pkg_free(info);
archive_read_finish(archive);
return(NULL);
}
/* Test for existence of a package in a alpm_list_t*
* of pmpkg_t*
*/
pmpkg_t *_alpm_pkg_find(const char *needle, alpm_list_t *haystack)
{
alpm_list_t *lp;
ALPM_LOG_FUNC;
if(needle == NULL || haystack == NULL) {
return(NULL);
}
for(lp = haystack; lp; lp = lp->next) {
pmpkg_t *info = lp->data;
if(info && strcmp(alpm_pkg_get_name(info), needle) == 0) {
return(info);
}
}
return(NULL);
}
/* fill in requiredby field of package,
* used when we want to install or add a package */
void _alpm_pkg_update_requiredby(pmpkg_t *pkg)
{
pkg->requiredby = alpm_pkg_compute_requiredby(pkg);
}
/* TODO this should either be public, or done somewhere else */
int _alpm_pkg_istoonew(pmpkg_t *pkg)
{
time_t t;
ALPM_LOG_FUNC;
if (!handle->upgradedelay)
return 0;
time(&t);
return((pkg->date + handle->upgradedelay) > t);
}
/* vim: set ts=2 sw=2 noet: */
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