Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 1 | /* |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 2 | zip_set_archive_comment.c -- set archive comment |
Thomas Klausner | e91cc0f | 2019-03-12 12:39:36 +0100 | [diff] [blame] | 3 | Copyright (C) 2006-2018 Dieter Baron and Thomas Klausner |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 4 | |
| 5 | This file is part of libzip, a library to manipulate ZIP archives. |
Dieter Baron | b86c433 | 2007-11-07 14:35:13 +0100 | [diff] [blame] | 6 | The authors can be contacted at <libzip@nih.at> |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 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. |
Thomas Klausner | 8eab1a2 | 2018-01-15 14:10:11 +0100 | [diff] [blame] | 20 | |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 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 | |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 34 | |
Dieter Baron | 5e96402 | 2006-04-24 10:34:39 +0000 | [diff] [blame] | 35 | #include <stdlib.h> |
| 36 | |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 37 | #include "zipint.h" |
| 38 | |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 39 | |
Dieter Baron | 8bc1276 | 2007-08-22 13:39:13 +0200 | [diff] [blame] | 40 | ZIP_EXTERN int |
Thomas Klausner | 8eab1a2 | 2018-01-15 14:10:11 +0100 | [diff] [blame] | 41 | zip_set_archive_comment(zip_t *za, const char *comment, zip_uint16_t len) { |
Dieter Baron | 1d9dfeb | 2014-09-28 23:02:54 +0200 | [diff] [blame] | 42 | zip_string_t *cstr; |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 43 | |
| 44 | if (ZIP_IS_RDONLY(za)) { |
Thomas Klausner | ea8ba49 | 2014-09-23 16:54:47 +0200 | [diff] [blame] | 45 | zip_error_set(&za->error, ZIP_ER_RDONLY, 0); |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 46 | return -1; |
| 47 | } |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 48 | |
Dieter Baron | 837f5ce | 2013-03-14 12:21:04 +0100 | [diff] [blame] | 49 | if (len > 0 && comment == NULL) { |
Thomas Klausner | ea8ba49 | 2014-09-23 16:54:47 +0200 | [diff] [blame] | 50 | zip_error_set(&za->error, ZIP_ER_INVAL, 0); |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 51 | return -1; |
| 52 | } |
| 53 | |
Dieter Baron | 5e96402 | 2006-04-24 10:34:39 +0000 | [diff] [blame] | 54 | if (len > 0) { |
Thomas Klausner | 8eab1a2 | 2018-01-15 14:10:11 +0100 | [diff] [blame] | 55 | if ((cstr = _zip_string_new((const zip_uint8_t *)comment, len, ZIP_FL_ENC_GUESS, &za->error)) == NULL) |
Dieter Baron | 5e96402 | 2006-04-24 10:34:39 +0000 | [diff] [blame] | 56 | return -1; |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 57 | |
| 58 | if (_zip_guess_encoding(cstr, ZIP_ENCODING_UNKNOWN) == ZIP_ENCODING_CP437) { |
| 59 | _zip_string_free(cstr); |
Thomas Klausner | ea8ba49 | 2014-09-23 16:54:47 +0200 | [diff] [blame] | 60 | zip_error_set(&za->error, ZIP_ER_INVAL, 0); |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 61 | return -1; |
| 62 | } |
Dieter Baron | 5e96402 | 2006-04-24 10:34:39 +0000 | [diff] [blame] | 63 | } |
| 64 | else |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 65 | cstr = NULL; |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 66 | |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 67 | _zip_string_free(za->comment_changes); |
| 68 | za->comment_changes = NULL; |
| 69 | |
Thomas Klausner | 8eab1a2 | 2018-01-15 14:10:11 +0100 | [diff] [blame] | 70 | if (((za->comment_orig && _zip_string_equal(za->comment_orig, cstr)) || (za->comment_orig == NULL && cstr == NULL))) { |
Dieter Baron | 0e5eeab | 2012-04-24 18:47:12 +0200 | [diff] [blame] | 71 | _zip_string_free(cstr); |
| 72 | za->comment_changed = 0; |
| 73 | } |
| 74 | else { |
| 75 | za->comment_changes = cstr; |
| 76 | za->comment_changed = 1; |
| 77 | } |
Thomas Klausner | 8eab1a2 | 2018-01-15 14:10:11 +0100 | [diff] [blame] | 78 | |
Thomas Klausner | 18a5a68 | 2006-04-23 00:40:48 +0000 | [diff] [blame] | 79 | return 0; |
| 80 | } |