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Annotation of embedaddon/php/ext/zip/lib/zip_set_file_extra.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:   zip_set_file_extra.c -- set extra field for file in archive
                      3:   Copyright (C) 2006-2010 Dieter Baron and Thomas Klausner
                      4: 
                      5:   This file is part of libzip, a library to manipulate ZIP archives.
                      6:   The authors can be contacted at <libzip@nih.at>
                      7: 
                      8:   Redistribution and use in source and binary forms, with or without
                      9:   modification, are permitted provided that the following conditions
                     10:   are met:
                     11:   1. Redistributions of source code must retain the above copyright
                     12:      notice, this list of conditions and the following disclaimer.
                     13:   2. Redistributions in binary form must reproduce the above copyright
                     14:      notice, this list of conditions and the following disclaimer in
                     15:      the documentation and/or other materials provided with the
                     16:      distribution.
                     17:   3. The names of the authors may not be used to endorse or promote
                     18:      products derived from this software without specific prior
                     19:      written permission.
                     20: 
                     21:   THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
                     22:   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     23:   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
                     25:   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
                     27:   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     28:   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
                     29:   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     30:   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
                     31:   IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32: */
                     33: 
                     34: 
                     35: 
                     36: #include <stdlib.h>
                     37: 
                     38: #include "zipint.h"
                     39: 
                     40: 
                     41: 
                     42: ZIP_EXTERN(int)
                     43: zip_set_file_extra(struct zip *za, zip_uint64_t idx,
                     44:                   const char *extra, int len)
                     45: {
                     46:     char *tmpext;
                     47: 
                     48:     if (idx >= za->nentry
                     49:        || len < 0 || len > MAXEXTLEN
                     50:        || (len > 0 && extra == NULL)) {
                     51:        _zip_error_set(&za->error, ZIP_ER_INVAL, 0);
                     52:        return -1;
                     53:     }
                     54: 
                     55:     if (ZIP_IS_RDONLY(za)) {
                     56:        _zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
                     57:        return -1;
                     58:     }
                     59: 
                     60:     if (len > 0) {
                     61:        if ((tmpext=(char *)_zip_memdup(extra, len, &za->error)) == NULL)
                     62:            return -1;
                     63:     }
                     64:     else
                     65:        tmpext = NULL;
                     66: 
                     67:     free(za->entry[idx].ch_extra);
                     68:     za->entry[idx].ch_extra = tmpext;
                     69:     za->entry[idx].ch_extra_len = len;
                     70: 
                     71:     return 0;
                     72: }