mirror of
https://github.com/veracrypt/VeraCrypt
synced 2024-11-15 07:33:34 +01:00
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
|
|
zip_source_open.c -- open zip_source (prepare for reading)
|
|
Copyright (C) 2009-2014 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 "zipint.h"
|
|
|
|
ZIP_EXTERN int
|
|
zip_source_open(zip_source_t *src)
|
|
{
|
|
if (src->source_closed) {
|
|
return -1;
|
|
}
|
|
if (src->write_state == ZIP_SOURCE_WRITE_REMOVED) {
|
|
zip_error_set(&src->error, ZIP_ER_DELETED, 0);
|
|
return -1;
|
|
}
|
|
|
|
if (ZIP_SOURCE_IS_OPEN_READING(src)) {
|
|
if ((zip_source_supports(src) & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_SEEK)) == 0) {
|
|
zip_error_set(&src->error, ZIP_ER_INUSE, 0);
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
if (ZIP_SOURCE_IS_LAYERED(src)) {
|
|
if (zip_source_open(src->src) < 0) {
|
|
_zip_error_set_from_source(&src->error, src->src);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (_zip_source_call(src, NULL, 0, ZIP_SOURCE_OPEN) < 0) {
|
|
if (ZIP_SOURCE_IS_LAYERED(src)) {
|
|
zip_source_close(src->src);
|
|
}
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
src->open_count++;
|
|
|
|
return 0;
|
|
}
|