/src/libzip/lib/zip_get_encryption_implementation.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | zip_get_encryption_implementation.c -- get encryption implementation |
3 | | Copyright (C) 2009-2022 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 <info@libzip.org> |
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 | | #include "zipint.h" |
36 | | |
37 | | |
38 | | zip_encryption_implementation |
39 | 8.95k | _zip_get_encryption_implementation(zip_uint16_t em, int operation) { |
40 | 8.95k | switch (em) { |
41 | 6.63k | case ZIP_EM_TRAD_PKWARE: |
42 | 6.63k | return operation == ZIP_CODEC_DECODE ? zip_source_pkware_decode : zip_source_pkware_encode; |
43 | | |
44 | 0 | #if defined(HAVE_CRYPTO) |
45 | 335 | case ZIP_EM_AES_128: |
46 | 383 | case ZIP_EM_AES_192: |
47 | 1.52k | case ZIP_EM_AES_256: |
48 | 1.52k | return operation == ZIP_CODEC_DECODE ? zip_source_winzip_aes_decode : zip_source_winzip_aes_encode; |
49 | 0 | #endif |
50 | | |
51 | 798 | default: |
52 | 798 | return NULL; |
53 | 8.95k | } |
54 | 8.95k | } |
55 | | |
56 | | ZIP_EXTERN int |
57 | 0 | zip_encryption_method_supported(zip_uint16_t method, int encode) { |
58 | 0 | if (method == ZIP_EM_NONE) { |
59 | 0 | return 1; |
60 | 0 | } |
61 | 0 | return _zip_get_encryption_implementation(method, encode ? ZIP_CODEC_ENCODE : ZIP_CODEC_DECODE) != NULL; |
62 | 0 | } |