mirror of https://github.com/PCSX2/pcsx2.git
87 lines
3.3 KiB
C
87 lines
3.3 KiB
C
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/*
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zip_file_set_external_attributes.c -- set external attributes for entry
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Copyright (C) 2013-2021 Dieter Baron and Thomas Klausner
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This file is part of libzip, a library to manipulate ZIP archives.
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The authors can be contacted at <info@libzip.org>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. The names of the authors may not be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "zipint.h"
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ZIP_EXTERN int
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zip_file_set_external_attributes(zip_t *za, zip_uint64_t idx, zip_flags_t flags, zip_uint8_t opsys, zip_uint32_t attributes) {
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zip_entry_t *e;
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int changed;
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zip_uint8_t unchanged_opsys;
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zip_uint32_t unchanged_attributes;
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if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
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return -1;
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if (ZIP_IS_RDONLY(za)) {
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zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
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return -1;
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}
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if (ZIP_WANT_TORRENTZIP(za)) {
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zip_error_set(&za->error, ZIP_ER_NOT_ALLOWED, 0);
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return -1;
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}
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e = za->entry + idx;
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unchanged_opsys = (e->orig ? (zip_uint8_t)(e->orig->version_madeby >> 8) : (zip_uint8_t)ZIP_OPSYS_DEFAULT);
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unchanged_attributes = e->orig ? e->orig->ext_attrib : ZIP_EXT_ATTRIB_DEFAULT;
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changed = (opsys != unchanged_opsys || attributes != unchanged_attributes);
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if (changed) {
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if (e->changes == NULL) {
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if ((e->changes = _zip_dirent_clone(e->orig)) == NULL) {
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zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
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return -1;
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}
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}
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e->changes->version_madeby = (zip_uint16_t)((opsys << 8) | (e->changes->version_madeby & 0xff));
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e->changes->ext_attrib = attributes;
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e->changes->changed |= ZIP_DIRENT_ATTRIBUTES;
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}
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else if (e->changes) {
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e->changes->changed &= ~ZIP_DIRENT_ATTRIBUTES;
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if (e->changes->changed == 0) {
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_zip_dirent_free(e->changes);
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e->changes = NULL;
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}
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else {
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e->changes->version_madeby = (zip_uint16_t)((unchanged_opsys << 8) | (e->changes->version_madeby & 0xff));
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e->changes->ext_attrib = unchanged_attributes;
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}
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}
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return 0;
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}
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