VeraCrypt
aboutsummaryrefslogtreecommitdiff
path: root/src/Common/libzip/zip_source_accept_empty.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/Common/libzip/zip_source_accept_empty.c')
-rw-r--r--src/Common/libzip/zip_source_accept_empty.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_source_accept_empty.c b/src/Common/libzip/zip_source_accept_empty.c
new file mode 100644
index 00000000..e772aeea
--- /dev/null
+++ b/src/Common/libzip/zip_source_accept_empty.c
@@ -0,0 +1,52 @@
+/*
+ zip_source_accept_empty.c -- if empty source is a valid archive
+ Copyright (C) 2019-2021 Dieter Baron and Thomas Klausner
+
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <info@libzip.org>
+
+ 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 "zipint.h"
+
+
+bool
+zip_source_accept_empty(zip_source_t *src) {
+ zip_int64_t ret;
+
+ if ((zip_source_supports(src) & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_ACCEPT_EMPTY)) == 0) {
+ if (ZIP_SOURCE_IS_LAYERED(src)) {
+ return zip_source_accept_empty(src->src);
+ }
+ return true;
+ }
+
+ ret = _zip_source_call(src, NULL, 0, ZIP_SOURCE_ACCEPT_EMPTY);
+
+ return ret != 0;
+}