| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Simple URL decoding function | ||
| 3 | * Copyright (c) 2012 Antti Seppälä | ||
| 4 | * | ||
| 5 | * References: | ||
| 6 | * RFC 3986: Uniform Resource Identifier (URI): Generic Syntax | ||
| 7 | * T. Berners-Lee et al. The Internet Society, 2005 | ||
| 8 | * | ||
| 9 | * based on http://www.icosaedro.it/apache/urldecode.c | ||
| 10 | * from Umberto Salsi (salsi@icosaedro.it) | ||
| 11 | * | ||
| 12 | * This file is part of FFmpeg. | ||
| 13 | * | ||
| 14 | * FFmpeg is free software; you can redistribute it and/or | ||
| 15 | * modify it under the terms of the GNU Lesser General Public | ||
| 16 | * License as published by the Free Software Foundation; either | ||
| 17 | * version 2.1 of the License, or (at your option) any later version. | ||
| 18 | * | ||
| 19 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 22 | * Lesser General Public License for more details. | ||
| 23 | * | ||
| 24 | * You should have received a copy of the GNU Lesser General Public | ||
| 25 | * License along with FFmpeg; if not, write to the Free Software | ||
| 26 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 27 | */ | ||
| 28 | |||
| 29 | #include <string.h> | ||
| 30 | |||
| 31 | #include "libavutil/mem.h" | ||
| 32 | #include "libavutil/avstring.h" | ||
| 33 | #include "urldecode.h" | ||
| 34 | |||
| 35 | ✗ | char *ff_urldecode(const char *url, int decode_plus_sign) | |
| 36 | { | ||
| 37 | ✗ | int s = 0, d = 0, url_len = 0; | |
| 38 | char c; | ||
| 39 | ✗ | char *dest = NULL; | |
| 40 | |||
| 41 | ✗ | if (!url) | |
| 42 | ✗ | return NULL; | |
| 43 | |||
| 44 | ✗ | url_len = strlen(url) + 1; | |
| 45 | ✗ | dest = av_malloc(url_len); | |
| 46 | |||
| 47 | ✗ | if (!dest) | |
| 48 | ✗ | return NULL; | |
| 49 | |||
| 50 | ✗ | while (s < url_len) { | |
| 51 | ✗ | c = url[s++]; | |
| 52 | |||
| 53 | ✗ | if (c == '%' && s + 2 < url_len) { | |
| 54 | ✗ | char c2 = url[s++]; | |
| 55 | ✗ | char c3 = url[s++]; | |
| 56 | ✗ | if (av_isxdigit(c2) && av_isxdigit(c3)) { | |
| 57 | ✗ | c2 = av_tolower(c2); | |
| 58 | ✗ | c3 = av_tolower(c3); | |
| 59 | |||
| 60 | ✗ | if (c2 <= '9') | |
| 61 | ✗ | c2 = c2 - '0'; | |
| 62 | else | ||
| 63 | ✗ | c2 = c2 - 'a' + 10; | |
| 64 | |||
| 65 | ✗ | if (c3 <= '9') | |
| 66 | ✗ | c3 = c3 - '0'; | |
| 67 | else | ||
| 68 | ✗ | c3 = c3 - 'a' + 10; | |
| 69 | |||
| 70 | ✗ | dest[d++] = 16 * c2 + c3; | |
| 71 | |||
| 72 | } else { /* %zz or something other invalid */ | ||
| 73 | ✗ | dest[d++] = c; | |
| 74 | ✗ | dest[d++] = c2; | |
| 75 | ✗ | dest[d++] = c3; | |
| 76 | } | ||
| 77 | ✗ | } else if (c == '+' && decode_plus_sign) { | |
| 78 | ✗ | dest[d++] = ' '; | |
| 79 | } else { | ||
| 80 | ✗ | dest[d++] = c; | |
| 81 | } | ||
| 82 | |||
| 83 | } | ||
| 84 | |||
| 85 | ✗ | return dest; | |
| 86 | } | ||
| 87 |