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pacman/lib/libalpm/package.c

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/*
* package.c
*
* Copyright (c) 2006-2010 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 <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>
/* libarchive */
#include <archive.h>
#include <archive_entry.h>
/* libalpm */
#include "package.h"
#include "alpm_list.h"
#include "log.h"
#include "util.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
* @{
*/
/** 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_FUNC;
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;
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_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));
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);
}
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(pkg->origin == PKG_FROM_CACHE && !(pkg->infolevel & INFRQ_DESC)) {
_alpm_db_read(pkg->origin_data.db, pkg, INFRQ_DESC);
}
return pkg->filename;
}
const char SYMEXPORT *alpm_pkg_get_name(pmpkg_t *pkg)
{
ASSERT(pkg != NULL, return(NULL));
return pkg->name;
}
const char SYMEXPORT *alpm_pkg_get_version(pmpkg_t *pkg)
{
ASSERT(pkg != NULL, return(NULL));
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;
}
off_t 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;
}
off_t 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;
}
int SYMEXPORT alpm_pkg_has_force(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->force;
}
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;
}
pmdb_t SYMEXPORT *alpm_pkg_get_db(pmpkg_t *pkg)
{
/* Sanity checks */
ASSERT(pkg != NULL, return(NULL));
ASSERT(pkg->origin == PKG_FROM_CACHE, return(NULL));
return(pkg->origin_data.db);
}
/**
* 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;
if((archive = archive_read_new()) == NULL) {
RET_ERR(PM_ERR_LIBARCHIVE, 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(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);
}
int 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;
}
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) {
if(!i->data) {
continue;
}
pmpkg_t *cachepkg = i->data;
if(_alpm_dep_edge(cachepkg, pkg)) {
const char *cachepkgname = cachepkg->name;
*reqs = alpm_list_add(*reqs, strdup(cachepkgname));
}
}
}
/**
* @brief Compute the packages requiring a given package.
* @param pkg a package
* @return the list of packages requiring pkg
*/
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);
}
}
}
return(reqs);
}
/** Compare two version strings and determine which one is 'newer'.
* Returns a value comparable to the way strcmp works. Returns 1
* if a is newer than b, 0 if a and b are the same version, or -1
* if b is newer than a.
*
* This function has been adopted from the rpmvercmp function located
* at lib/rpmvercmp.c, and was most recently updated against rpm
* version 4.4.2.3. Small modifications have been made to make it more
* consistent with the libalpm coding style.
*
* Keep in mind that the pkgrel is only compared if it is available
* on both versions handed to this function. For example, comparing
* 1.5-1 and 1.5 will yield 0; comparing 1.5-1 and 1.5-2 will yield
* -1 as expected. This is mainly for supporting versioned dependencies
* that do not include the pkgrel.
*/
int SYMEXPORT alpm_pkg_vercmp(const char *a, const char *b)
{
char oldch1, oldch2;
char *str1, *str2;
char *ptr1, *ptr2;
char *one, *two;
int rc;
int isnum;
int ret = 0;
ALPM_LOG_FUNC;
/* libalpm added code. ensure our strings are not null */
if(!a) {
if(!b) return(0);
return(-1);
}
if(!b) return(1);
/* easy comparison to see if versions are identical */
if(strcmp(a, b) == 0) return(0);
str1 = strdup(a);
str2 = strdup(b);
one = str1;
two = str2;
/* loop through each version segment of str1 and str2 and compare them */
while(*one && *two) {
while(*one && !isalnum((int)*one)) one++;
while(*two && !isalnum((int)*two)) two++;
/* If we ran to the end of either, we are finished with the loop */
if(!(*one && *two)) break;
ptr1 = one;
ptr2 = two;
/* grab first completely alpha or completely numeric segment */
/* leave one and two pointing to the start of the alpha or numeric */
/* segment and walk ptr1 and ptr2 to end of segment */
if(isdigit((int)*ptr1)) {
while(*ptr1 && isdigit((int)*ptr1)) ptr1++;
while(*ptr2 && isdigit((int)*ptr2)) ptr2++;
isnum = 1;
} else {
while(*ptr1 && isalpha((int)*ptr1)) ptr1++;
while(*ptr2 && isalpha((int)*ptr2)) ptr2++;
isnum = 0;
}
/* save character at the end of the alpha or numeric segment */
/* so that they can be restored after the comparison */
oldch1 = *ptr1;
*ptr1 = '\0';
oldch2 = *ptr2;
*ptr2 = '\0';
/* this cannot happen, as we previously tested to make sure that */
/* the first string has a non-null segment */
if (one == ptr1) {
ret = -1; /* arbitrary */
goto cleanup;
}
/* take care of the case where the two version segments are */
/* different types: one numeric, the other alpha (i.e. empty) */
/* numeric segments are always newer than alpha segments */
/* XXX See patch #60884 (and details) from bugzilla #50977. */
if (two == ptr2) {
ret = isnum ? 1 : -1;
goto cleanup;
}
if (isnum) {
/* this used to be done by converting the digit segments */
/* to ints using atoi() - it's changed because long */
/* digit segments can overflow an int - this should fix that. */
/* throw away any leading zeros - it's a number, right? */
while (*one == '0') one++;
while (*two == '0') two++;
/* whichever number has more digits wins */
if (strlen(one) > strlen(two)) {
ret = 1;
goto cleanup;
}
if (strlen(two) > strlen(one)) {
ret = -1;
goto cleanup;
}
}
/* strcmp will return which one is greater - even if the two */
/* segments are alpha or if they are numeric. don't return */
/* if they are equal because there might be more segments to */
/* compare */
rc = strcmp(one, two);
if (rc) {
ret = rc < 1 ? -1 : 1;
goto cleanup;
}
/* restore character that was replaced by null above */
*ptr1 = oldch1;
one = ptr1;
*ptr2 = oldch2;
two = ptr2;
/* libalpm added code. check if version strings have hit the pkgrel
* portion. depending on which strings have hit, take correct action.
* this is all based on the premise that we only have one dash in
* the version string, and it separates pkgver from pkgrel. */
if(*ptr1 == '-' && *ptr2 == '-') {
/* no-op, continue comparing since we are equivalent throughout */
} else if(*ptr1 == '-') {
/* ptr1 has hit the pkgrel and ptr2 has not. continue version
* comparison after stripping the pkgrel from ptr1. */
*ptr1 = '\0';
} else if(*ptr2 == '-') {
/* ptr2 has hit the pkgrel and ptr1 has not. continue version
* comparison after stripping the pkgrel from ptr2. */
*ptr2 = '\0';
}
}
/* this catches the case where all numeric and alpha segments have */
/* compared identically but the segment separating characters were */
/* different */
if ((!*one) && (!*two)) {
ret = 0;
goto cleanup;
}
/* the final showdown. we never want a remaining alpha string to
* beat an empty string. the logic is a bit weird, but:
* - if one is empty and two is not an alpha, two is newer.
* - if one is an alpha, two is newer.
* - otherwise one is newer.
* */
if ( ( !*one && !isalpha((int)*two) )
|| isalpha((int)*one) ) {
ret = -1;
} else {
ret = 1;
}
cleanup:
free(str1);
free(str2);
return(ret);
}
/** @} */
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));
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->force = pkg->force;
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;
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->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 locapkg? */
int _alpm_pkg_compare_versions(pmpkg_t *spkg, pmpkg_t *localpkg)
{
int cmp = 0;
ALPM_LOG_FUNC;
cmp = alpm_pkg_vercmp(alpm_pkg_get_version(spkg),
alpm_pkg_get_version(localpkg));
if(cmp < 0 && alpm_pkg_has_force(spkg)) {
cmp = 1;
}
return(cmp);
}
/* 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(strcmp(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;
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(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: */
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