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-rw-r--r--lib/libalpm/package.c342
1 files changed, 342 insertions, 0 deletions
diff --git a/lib/libalpm/package.c b/lib/libalpm/package.c
new file mode 100644
index 00000000..f20b88eb
--- /dev/null
+++ b/lib/libalpm/package.c
@@ -0,0 +1,342 @@
+/*
+ * 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: */

Copyright © 2002-2022 Judd Vinet and Aaron Griffin. Copyright © 2022 Erich Eckner.
The Arch Linux name and logo are recognized trademarks. Some rights reserved. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis.