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-rw-r--r--src/Common/libzip/zip_unchange.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_unchange.c b/src/Common/libzip/zip_unchange.c
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+/*
+ zip_unchange.c -- undo changes to file in zip archive
+ Copyright (C) 1999-2015 Dieter Baron and Thomas Klausner
+
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <libzip@nih.at>
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ 3. The names of the authors may not be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+ OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include <stdlib.h>
+
+#include "zipint.h"
+
+
+ZIP_EXTERN int
+zip_unchange(zip_t *za, zip_uint64_t idx)
+{
+ return _zip_unchange(za, idx, 0);
+}
+
+
+int
+_zip_unchange(zip_t *za, zip_uint64_t idx, int allow_duplicates)
+{
+ zip_int64_t i;
+ const char *orig_name, *changed_name;
+
+ if (idx >= za->nentry) {
+ zip_error_set(&za->error, ZIP_ER_INVAL, 0);
+ return -1;
+ }
+
+ if (!allow_duplicates && za->entry[idx].changes && (za->entry[idx].changes->changed & ZIP_DIRENT_FILENAME)) {
+ if (za->entry[idx].orig != NULL) {
+ if ((orig_name=_zip_get_name(za, idx, ZIP_FL_UNCHANGED, &za->error)) == NULL) {
+ return -1;
+ }
+
+ i = _zip_name_locate(za, orig_name, 0, NULL);
+ if (i >= 0 && (zip_uint64_t)i != idx) {
+ zip_error_set(&za->error, ZIP_ER_EXISTS, 0);
+ return -1;
+ }
+ }
+ else {
+ orig_name = NULL;
+ }
+
+ if ((changed_name=_zip_get_name(za, idx, 0, &za->error)) == NULL) {
+ return -1;
+ }
+
+ if (orig_name) {
+ if (_zip_hash_add(za->names, (const zip_uint8_t *)orig_name, idx, 0, &za->error) == false) {
+ return -1;
+ }
+ }
+ if (_zip_hash_delete(za->names, (const zip_uint8_t *)changed_name, &za->error) == false) {
+ _zip_hash_delete(za->names, (const zip_uint8_t *)orig_name, NULL);
+ return -1;
+ }
+ }
+
+ _zip_dirent_free(za->entry[idx].changes);
+ za->entry[idx].changes = NULL;
+
+ _zip_unchange_data(za->entry+idx);
+
+ return 0;
+}