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pacman/lib/libalpm/package.c

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/*
* package.c
*
* Copyright (c) 2002-2007 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 <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>
#include <locale.h> /* setlocale */
/* 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 "delta.h"
#include "handle.h"
#include "deps.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_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_deltas(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_DELTAS)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DELTAS);
}
return pkg->deltas;
}
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;
}
/**
* Open a package changelog for reading. Similar to fopen in functionality,
* except that the returned 'file stream' could really be from an archive
* as well as from the database.
* @param pkg the package to read the changelog of (either file or db)
* @return a 'file stream' to the package changelog
*/
void SYMEXPORT *alpm_pkg_changelog_open(pmpkg_t *pkg)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
if(pkg->origin == PKG_FROM_CACHE) {
char clfile[PATH_MAX];
snprintf(clfile, PATH_MAX, "%s/%s/%s-%s/changelog",
alpm_option_get_dbpath(),
alpm_db_get_name(handle->db_local),
alpm_pkg_get_name(pkg),
alpm_pkg_get_version(pkg));
return fopen(clfile, "r");
} else if(pkg->origin == PKG_FROM_FILE) {
struct archive *archive = NULL;
struct archive_entry *entry;
const char *pkgfile = pkg->origin_data.file;
int ret = ARCHIVE_OK;
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);
}
while((ret = archive_read_next_header(archive, &entry)) == ARCHIVE_OK) {
const char *entry_name = archive_entry_pathname(entry);
if(strcmp(entry_name, ".CHANGELOG") == 0) {
return(archive);
}
}
/* we didn't find a changelog */
archive_read_finish(archive);
errno = ENOENT;
}
return(NULL);
}
/**
* Read data from an open changelog 'file stream'. Similar to fread in
* functionality, this function takes a buffer and amount of data to read.
* @param ptr a buffer to fill with raw changelog data
* @param size the size of the buffer
* @param pkg the package that the changelog is being read from
* @param fp a 'file stream' to the package changelog
* @return the number of characters read, or 0 if there is no more data
*/
size_t SYMEXPORT alpm_pkg_changelog_read(void *ptr, size_t size,
const pmpkg_t *pkg, const void *fp)
{
size_t ret = 0;
if(pkg->origin == PKG_FROM_CACHE) {
ret = fread(ptr, 1, size, (FILE*)fp);
} else if(pkg->origin == PKG_FROM_FILE) {
ret = archive_read_data((struct archive*)fp, ptr, size);
}
return(ret);
}
/*
int SYMEXPORT alpm_pkg_changelog_feof(const pmpkg_t *pkg, void *fp)
{
int ret = 0;
if(pkg->origin == PKG_FROM_CACHE) {
ret = feof((FILE*)fp);
} else if(pkg->origin == PKG_FROM_FILE) {
// note: this doesn't quite work, no feof in libarchive
ret = archive_read_data((struct archive*)fp, NULL, 0);
}
return(ret);
}
*/
/**
* Close a package changelog for reading. Similar to fclose in functionality,
* except that the 'file stream' could really be from an archive as well as
* from the database.
* @param pkg the package that the changelog was read from
* @param fp a 'file stream' to the package changelog
* @return whether closing the package changelog stream was successful
*/
int SYMEXPORT alpm_pkg_changelog_close(const pmpkg_t *pkg, void *fp)
{
int ret = 0;
if(pkg->origin == PKG_FROM_CACHE) {
ret = fclose((FILE*)fp);
} else if(pkg->origin == PKG_FROM_FILE) {
ret = archive_read_finish((struct archive *)fp);
}
return(ret);
}
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 = j->data;
if(alpm_depcmp(pkg, dep)) {
_alpm_log(PM_LOG_DEBUG, "adding '%s' in requiredby field for '%s'\n",
cachepkgname, pkg->name);
reqs = alpm_list_add(reqs, strdup(cachepkgname));
}
}
}
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;
CALLOC(pkg, 1, sizeof(pmpkg_t), 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;
CALLOC(newpkg, 1, 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->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_copy_data(alpm_pkg_get_depends(pkg),
sizeof(pmdepend_t));
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));
newpkg->deltas = alpm_list_copy_data(alpm_pkg_get_deltas(pkg),
sizeof(pmdelta_t));
/* 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->groups);
FREELIST(pkg->provides);
FREELIST(pkg->replaces);
FREELIST(pkg->deltas);
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(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")) {
char first = tolower(ptr[0]);
if(first > 'a' && first < 'z') {
struct tm tmp_tm = {0}; //initialize to null incase of failure
setlocale(LC_TIME, "C");
strptime(ptr, "%a %b %e %H:%M:%S %Y", &tmp_tm);
info->builddate = mktime(&tmp_tm);
setlocale(LC_TIME, "");
} else {
info->builddate = 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")) {
pmdepend_t *dep = alpm_splitdep(ptr);
info->depends = alpm_list_add(info->depends, dep);
} 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 package description file in %s\n"),
pkgfile);
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[PATH_MAX+1];
int fd;
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));
}
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: %s\n"),
pkgfile, 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: %s\n"),
pkgfile, archive_error_string(archive));
pm_errno = PM_ERR_LIBARCHIVE_ERROR;
goto error;
}
if(!config) {
_alpm_log(PM_LOG_ERROR, _("missing package metadata in %s\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 {
FREELIST(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);
}
/* 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);
}
/** 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: */
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