moparisthebest
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pacman
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pacman/lib/libalpm/package.c

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/*
* package.c
*
* Copyright (c) 2002-2005 by Judd Vinet <jvinet@zeroflux.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 <fcntl.h>
#include <string.h>
#include <libtar.h>
#include <zlib.h>
/* pacman */
#include "log.h"
#include "util.h"
#include "error.h"
#include "list.h"
#include "package.h"
pmpkg_t *pkg_new()
{
pmpkg_t* pkg = NULL;
MALLOC(pkg, sizeof(pmpkg_t));
pkg->name[0] = '\0';
pkg->version[0] = '\0';
pkg->desc[0] = '\0';
pkg->url[0] = '\0';
pkg->license[0] = '\0';
pkg->builddate[0] = '\0';
pkg->installdate[0] = '\0';
pkg->packager[0] = '\0';
pkg->md5sum[0] = '\0';
pkg->arch[0] = '\0';
pkg->size = 0;
pkg->scriptlet = 0;
pkg->force = 0;
pkg->reason = PM_PKG_REASON_EXPLICIT;
pkg->requiredby = NULL;
pkg->conflicts = NULL;
pkg->files = NULL;
pkg->backup = NULL;
pkg->depends = NULL;
pkg->groups = NULL;
pkg->provides = NULL;
pkg->replaces = NULL;
/* internal */
pkg->origin = 0;
pkg->data = NULL;
pkg->infolevel = 0;
return(pkg);
}
void pkg_free(pmpkg_t *pkg)
{
if(pkg == NULL) {
return;
}
FREELIST(pkg->files);
FREELIST(pkg->backup);
FREELIST(pkg->depends);
FREELIST(pkg->conflicts);
FREELIST(pkg->requiredby);
FREELIST(pkg->groups);
FREELIST(pkg->provides);
FREELIST(pkg->replaces);
if(pkg->origin == PKG_FROM_FILE) {
FREE(pkg->data);
}
free(pkg);
return;
}
/* Parses the package description file for the current package
*
* Returns: 0 on success, 1 on error
*
*/
static int parse_descfile(char *descfile, pmpkg_t *info, int output)
{
FILE* fp = NULL;
char line[PATH_MAX+1];
char* ptr = NULL;
char* key = NULL;
int linenum = 0;
if((fp = fopen(descfile, "r")) == NULL) {
_alpm_log(PM_LOG_ERROR, "could not open file %s", descfile);
return(-1);
}
while(!feof(fp)) {
fgets(line, PATH_MAX, fp);
linenum++;
_alpm_strtrim(line);
if(strlen(line) == 0 || line[0] == '#') {
continue;
}
if(output) {
printf("%s\n", line);
}
ptr = line;
key = strsep(&ptr, "=");
if(key == NULL || ptr == NULL) {
fprintf(stderr, "%s: syntax error in description file line %d\n",
info->name[0] != '\0' ? info->name : "error", linenum);
} else {
_alpm_strtrim(key);
key = _alpm_strtoupper(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 = pm_list_add(info->groups, strdup(ptr));
} else if(!strcmp(key, "URL")) {
strncpy(info->url, ptr, sizeof(info->url));
} else if(!strcmp(key, "LICENSE")) {
strncpy(info->license, ptr, sizeof(info->license));
} else if(!strcmp(key, "BUILDDATE")) {
strncpy(info->builddate, ptr, sizeof(info->builddate));
} else if(!strcmp(key, "INSTALLDATE")) {
strncpy(info->installdate, ptr, sizeof(info->installdate));
} 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")) {
char tmp[32];
strncpy(tmp, ptr, sizeof(tmp));
info->size = atol(tmp);
} else if(!strcmp(key, "DEPEND")) {
info->depends = pm_list_add(info->depends, strdup(ptr));
} else if(!strcmp(key, "CONFLICT")) {
info->conflicts = pm_list_add(info->conflicts, strdup(ptr));
} else if(!strcmp(key, "REPLACES")) {
info->replaces = pm_list_add(info->replaces, strdup(ptr));
} else if(!strcmp(key, "PROVIDES")) {
info->provides = pm_list_add(info->provides, strdup(ptr));
} else if(!strcmp(key, "BACKUP")) {
info->backup = pm_list_add(info->backup, strdup(ptr));
} else {
fprintf(stderr, "%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);
}
pmpkg_t *pkg_load(char *pkgfile)
{
char *expath;
int i;
int config = 0;
int filelist = 0;
int scriptcheck = 0;
TAR *tar;
pmpkg_t *info = NULL;
tartype_t gztype = {
(openfunc_t)_alpm_gzopen_frontend,
(closefunc_t)gzclose,
(readfunc_t)gzread,
(writefunc_t)gzwrite
};
if(pkgfile == NULL) {
PM_RET_ERR(PM_ERR_WRONG_ARGS, NULL);
}
if(tar_open(&tar, pkgfile, &gztype, O_RDONLY, 0, TAR_GNU) == -1) {
PM_RET_ERR(PM_ERR_NOT_A_FILE, NULL);
}
info = pkg_new();
if(info == NULL) {
tar_close(tar);
PM_RET_ERR(PM_ERR_MEMORY, NULL);
}
for(i = 0; !th_read(tar); i++) {
if(config && filelist && scriptcheck) {
/* we have everything we need */
break;
}
if(!strcmp(th_get_pathname(tar), ".PKGINFO")) {
char *descfile;
/* extract this file into /tmp. it has info for us */
descfile = strdup("/tmp/pacman_XXXXXX");
mkstemp(descfile);
tar_extract_file(tar, descfile);
/* parse the info file */
if(parse_descfile(descfile, info, 0) == -1) {
goto error;
}
if(!strlen(info->name)) {
_alpm_log(PM_LOG_ERROR, "missing package name in %s", pkgfile);
goto error;
}
if(!strlen(info->version)) {
_alpm_log(PM_LOG_ERROR, "missing package version in %s", pkgfile);
goto error;
}
config = 1;
FREE(descfile);
continue;
} else if(!strcmp(th_get_pathname(tar), "._install") || !strcmp(th_get_pathname(tar), ".INSTALL")) {
info->scriptlet = 1;
scriptcheck = 1;
} else if(!strcmp(th_get_pathname(tar), ".FILELIST")) {
/* Build info->files from the filelist */
FILE *fp;
char *fn;
char *str;
MALLOC(str, PATH_MAX);
fn = strdup("/tmp/pacman_XXXXXX");
mkstemp(fn);
tar_extract_file(tar, fn);
fp = fopen(fn, "r");
while(!feof(fp)) {
if(fgets(str, PATH_MAX, fp) == NULL) {
continue;
}
_alpm_strtrim(str);
info->files = pm_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);
filelist = 1;
continue;
} else {
scriptcheck = 1;
if(!filelist) {
/* no .FILELIST present in this package.. build the filelist the */
/* old-fashioned way, one at a time */
expath = strdup(th_get_pathname(tar));
info->files = pm_list_add(info->files, expath);
}
}
if(TH_ISREG(tar) && tar_skip_regfile(tar)) {
_alpm_log(PM_LOG_ERROR, "bad package file in %s", pkgfile);
goto error;
}
expath = NULL;
}
tar_close(tar);
if(!config) {
_alpm_log(PM_LOG_ERROR, "missing package info file in %s", pkgfile);
goto error;
}
/* internal */
info->origin = PKG_FROM_FILE;
info->data = strdup(pkgfile);
info->infolevel = 0xFF;
return(info);
error:
printf("toto\n");
FREEPKG(info);
tar_close(tar);
return(NULL);
}
/* Helper function for sorting packages
*/
int 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 PMList*
* of pmpkg_t*
*
* returns: 0 for no match
* 1 for identical match
* -1 for name-only match (version mismatch)
*/
int pkg_isin(pmpkg_t *needle, PMList *haystack)
{
PMList *lp;
if(needle == NULL || haystack == NULL) {
return(0);
}
for(lp = haystack; lp; lp = lp->next) {
pmpkg_t *info = lp->data;
if(info && !strcmp(info->name, needle->name)) {
if(!strcmp(info->version, needle->version)) {
return(1);
}
return(-1);
}
}
return(0);
}
/* vim: set ts=2 sw=2 noet: */
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