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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Simple URL decoding function |
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| 3 | * Copyright (c) 2012 Antti Seppälä |
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| 4 | * |
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| 5 | * References: |
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| 6 | * RFC 3986: Uniform Resource Identifier (URI): Generic Syntax |
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| 7 | * T. Berners-Lee et al. The Internet Society, 2005 |
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| 8 | * |
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| 9 | * based on http://www.icosaedro.it/apache/urldecode.c |
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| 10 | * from Umberto Salsi (salsi@icosaedro.it) |
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| 11 | * |
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| 12 | * This file is part of FFmpeg. |
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| 13 | * |
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| 14 | * FFmpeg is free software; you can redistribute it and/or |
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| 15 | * modify it under the terms of the GNU Lesser General Public |
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| 16 | * License as published by the Free Software Foundation; either |
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| 17 | * version 2.1 of the License, or (at your option) any later version. |
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| 18 | * |
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| 19 | * FFmpeg is distributed in the hope that it will be useful, |
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| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 22 | * Lesser General Public License for more details. |
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| 23 | * |
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| 24 | * You should have received a copy of the GNU Lesser General Public |
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| 25 | * License along with FFmpeg; if not, write to the Free Software |
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| 26 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 27 | */ |
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| 28 | |||
| 29 | #include |
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| 30 | |||
| 31 | #include "libavutil/mem.h" |
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| 32 | #include "libavutil/avstring.h" |
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| 33 | #include "urldecode.h" |
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| 34 | |||
| 35 | char *ff_urldecode(const char *url) |
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| 36 | { |
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| 37 | int s = 0, d = 0, url_len = 0; |
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| 38 | char c; |
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| 39 | char *dest = NULL; |
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| 40 | |||
| 41 | if (!url) |
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| 42 | return NULL; |
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| 43 | |||
| 44 | url_len = strlen(url) + 1; |
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| 45 | dest = av_malloc(url_len); |
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| 46 | |||
| 47 | if (!dest) |
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| 48 | return NULL; |
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| 49 | |||
| 50 | while (s < url_len) { |
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| 51 | c = url[s++]; |
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| 52 | |||
| 53 | if (c == '%' && s + 2 < url_len) { |
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| 54 | char c2 = url[s++]; |
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| 55 | char c3 = url[s++]; |
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| 56 | if (av_isxdigit(c2) && av_isxdigit(c3)) { |
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| 57 | c2 = av_tolower(c2); |
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| 58 | c3 = av_tolower(c3); |
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| 59 | |||
| 60 | if (c2 <= '9') |
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| 61 | c2 = c2 - '0'; |
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| 62 | else |
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| 63 | c2 = c2 - 'a' + 10; |
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| 64 | |||
| 65 | if (c3 <= '9') |
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| 66 | c3 = c3 - '0'; |
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| 67 | else |
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| 68 | c3 = c3 - 'a' + 10; |
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| 69 | |||
| 70 | dest[d++] = 16 * c2 + c3; |
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| 71 | |||
| 72 | } else { /* %zz or something other invalid */ |
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| 73 | dest[d++] = c; |
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| 74 | dest[d++] = c2; |
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| 75 | dest[d++] = c3; |
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| 76 | } |
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| 77 | } else if (c == '+') { |
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| 78 | dest[d++] = ' '; |
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| 79 | } else { |
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| 80 | dest[d++] = c; |
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| 81 | } |
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| 82 | |||
| 83 | } |
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| 84 | |||
| 85 | return dest; |
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| 86 | } |