src/mime_header.cc

   1 /*
   2  * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 25    MiME Header Parsing */
  10
  11 #include "squid.h"
  12 #include "Debug.h"
  13 #include "profiler/Profiler.h"
  14
  15 size_t
  16 headersEnd(const char *mime, size_t l)
  17 {
  18     size_t e = 0;
  19     int state = 1;
  20
  21     PROF_start(headersEnd);
  22
  23     while (e < l && state < 3) {
  24         switch (state) {
  25
  26         case 0:
  27
  28             if ('\n' == mime[e])
  29                 state = 1;
  30
  31             break;
  32
  33         case 1:
  34             if ('\r' == mime[e])
  35                 state = 2;
  36             else if ('\n' == mime[e])
  37                 state = 3;
  38             else
  39                 state = 0;
  40
  41             break;
  42
  43         case 2:
  44             if ('\n' == mime[e])
  45                 state = 3;
  46             else
  47                 state = 0;
  48
  49             break;
  50
  51         default:
  52             break;
  53         }
  54
  55         ++e;
  56     }
  57     PROF_stop(headersEnd);
  58
  59     if (3 == state)
  60         return e;
  61
  62     return 0;
  63 }
  64