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https://github.com/moparisthebest/pacman
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78cbc045c1
The usefulness of this is rather limited due to it not being compiled into production builds. When you do choose to see the output, it is often overwhelming and not helpful. The best bet is to use a debugger and/or well-placed fprintf() statements. Signed-off-by: Dan McGee <dan@archlinux.org>
112 lines
2.6 KiB
C
112 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 two strings : file and hash */
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static int backup_split(const char *string, char **file, char **hash)
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{
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char *str = strdup(string);
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char *ptr;
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/* tab delimiter */
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ptr = strchr(str, '\t');
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if(ptr == NULL) {
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if(file) {
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*file = str;
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} else {
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/* don't need our dup as the fname wasn't requested, so free it */
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FREE(str);
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}
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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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if(file) {
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*file = strdup(str);
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}
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if(hash) {
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*hash = strdup(ptr);
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}
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FREE(str);
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return 1;
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}
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char *_alpm_backup_file(const char *string)
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{
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char *file = NULL;
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backup_split(string, &file, NULL);
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return file;
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}
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char *_alpm_backup_hash(const char *string)
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{
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char *hash = NULL;
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backup_split(string, NULL, &hash);
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return hash;
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}
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/* Look for a filename in a pmpkg_t.backup list. If we find it,
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* then we return the md5 hash (parsed from the same line)
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*/
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char *_alpm_needbackup(const char *file, const alpm_list_t *backup)
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{
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const alpm_list_t *lp;
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if(file == NULL || backup == 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; lp; lp = lp->next) {
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char *filename = NULL;
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char *hash = NULL;
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/* no hash found */
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if(!backup_split((char *)lp->data, &filename, &hash)) {
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FREE(filename);
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continue;
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}
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if(strcmp(file, filename) == 0) {
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FREE(filename);
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return hash;
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}
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FREE(filename);
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FREE(hash);
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}
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return NULL;
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}
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/* vim: set ts=2 sw=2 noet: */
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