| Dieter Baron | a114fb8 | 2017-03-24 12:09:09 +0100 | [diff] [blame] | 1 | /* |
| 2 | zip_source_get_compression_flags.c -- get compression flags for entry |
| 3 | Copyright (C) 2017 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 | #include "zipint.h" |
| 36 | |
| 37 | #define ZIP_COMPRESSION_BITFLAG_MAX 3 |
| 38 | |
| 39 | zip_int8_t |
| 40 | zip_source_get_compression_flags(zip_source_t *src) |
| 41 | { |
| 42 | while (src) { |
| 43 | if ((src->supports & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_GET_COMPRESSION_FLAGS))) { |
| 44 | zip_int64_t ret = _zip_source_call(src, NULL, 0, ZIP_SOURCE_GET_COMPRESSION_FLAGS); |
| 45 | if (ret < 0) { |
| 46 | return -1; |
| 47 | } |
| 48 | if (ret > ZIP_COMPRESSION_BITFLAG_MAX) { |
| 49 | zip_error_set(&src->error, ZIP_ER_INTERNAL, 0); |
| 50 | return -1; |
| 51 | } |
| 52 | return (zip_int8_t)ret; |
| 53 | } |
| 54 | src = src->src; |
| 55 | } |
| 56 | |
| 57 | return 0; |
| 58 | } |
