LCOV - code coverage report
Current view: top level - libavformat - urldecode.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 31 0.0 %
Date: 2017-12-17 16:07:53 Functions: 0 1 0.0 %

          Line data    Source code
       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           0 : char *ff_urldecode(const char *url)
      36             : {
      37           0 :     int s = 0, d = 0, url_len = 0;
      38             :     char c;
      39           0 :     char *dest = NULL;
      40             : 
      41           0 :     if (!url)
      42           0 :         return NULL;
      43             : 
      44           0 :     url_len = strlen(url) + 1;
      45           0 :     dest = av_malloc(url_len);
      46             : 
      47           0 :     if (!dest)
      48           0 :         return NULL;
      49             : 
      50           0 :     while (s < url_len) {
      51           0 :         c = url[s++];
      52             : 
      53           0 :         if (c == '%' && s + 2 < url_len) {
      54           0 :             char c2 = url[s++];
      55           0 :             char c3 = url[s++];
      56           0 :             if (av_isxdigit(c2) && av_isxdigit(c3)) {
      57           0 :                 c2 = av_tolower(c2);
      58           0 :                 c3 = av_tolower(c3);
      59             : 
      60           0 :                 if (c2 <= '9')
      61           0 :                     c2 = c2 - '0';
      62             :                 else
      63           0 :                     c2 = c2 - 'a' + 10;
      64             : 
      65           0 :                 if (c3 <= '9')
      66           0 :                     c3 = c3 - '0';
      67             :                 else
      68           0 :                     c3 = c3 - 'a' + 10;
      69             : 
      70           0 :                 dest[d++] = 16 * c2 + c3;
      71             : 
      72             :             } else { /* %zz or something other invalid */
      73           0 :                 dest[d++] = c;
      74           0 :                 dest[d++] = c2;
      75           0 :                 dest[d++] = c3;
      76             :             }
      77           0 :         } else if (c == '+') {
      78           0 :             dest[d++] = ' ';
      79             :         } else {
      80           0 :             dest[d++] = c;
      81             :         }
      82             : 
      83             :     }
      84             : 
      85           0 :     return dest;
      86             : }

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