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https://github.com/moparisthebest/pacman
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b94e8ecd1f
Some of these are legit (the backup hash NULL checks), while others are either extemely unlikely or just impossible for the static code analysis to prove, but are worth adding anyway because they have little overhead. Signed-off-by: Dan McGee <dan@archlinux.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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* backup.c
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*
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* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2005 by Judd Vinet <jvinet@zeroflux.org>
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* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
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* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
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* Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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/* libalpm */
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#include "backup.h"
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#include "alpm_list.h"
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#include "log.h"
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#include "util.h"
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/* split a backup string "file\thash" into the relevant components */
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int _alpm_split_backup(const char *string, alpm_backup_t **backup)
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{
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char *str, *ptr;
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STRDUP(str, string, return -1);
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/* tab delimiter */
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ptr = str ? strchr(str, '\t') : NULL;
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if(ptr == NULL) {
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(*backup)->name = str;
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(*backup)->hash = NULL;
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return 0;
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}
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*ptr = '\0';
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ptr++;
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/* now str points to the filename and ptr points to the hash */
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STRDUP((*backup)->name, str, return -1);
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STRDUP((*backup)->hash, ptr, return -1);
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FREE(str);
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return 0;
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}
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/* Look for a filename in a alpm_pkg_t.backup list. If we find it,
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* then we return the full backup entry.
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*/
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alpm_backup_t *_alpm_needbackup(const char *file, const alpm_list_t *backup_list)
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{
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const alpm_list_t *lp;
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if(file == NULL || backup_list == NULL) {
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return NULL;
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}
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/* run through the backup list and parse out the hash for our file */
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for(lp = backup_list; lp; lp = lp->next) {
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alpm_backup_t *backup = lp->data;
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if(strcmp(file, backup->name) == 0) {
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return backup;
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}
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}
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return NULL;
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}
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void _alpm_backup_free(alpm_backup_t *backup)
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{
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free(backup->name);
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free(backup->hash);
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free(backup);
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}
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alpm_backup_t *_alpm_backup_dup(const alpm_backup_t *backup)
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{
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alpm_backup_t *newbackup;
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CALLOC(newbackup, 1, sizeof(alpm_backup_t), return NULL);
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STRDUP(newbackup->name, backup->name, return NULL);
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STRDUP(newbackup->hash, backup->hash, return NULL);
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return newbackup;
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}
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/* vim: set ts=2 sw=2 noet: */
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