src/mime_header.cc

   1 /*
   2  * DEBUG: section 25    MiME Header Parsing
   3  * AUTHOR: Harvest Derived
   4  *
   5  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   6  * ----------------------------------------------------------
   7  *
   8  *  Squid is the result of efforts by numerous individuals from
   9  *  the Internet community; see the CONTRIBUTORS file for full
  10  *  details.   Many organizations have provided support for Squid's
  11  *  development; see the SPONSORS file for full details.  Squid is
  12  *  Copyrighted (C) 2001 by the Regents of the University of
  13  *  California; see the COPYRIGHT file for full details.  Squid
  14  *  incorporates software developed and/or copyrighted by other
  15  *  sources; see the CREDITS file for full details.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2 of the License, or
  20  *  (at your option) any later version.
  21  *
  22  *  This program is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  *
  27  *  You should have received a copy of the GNU General Public License
  28  *  along with this program; if not, write to the Free Software
  29  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  30  *
  31  */
  32
  33 #include "squid.h"
  34 #include "Debug.h"
  35 #include "profiler/Profiler.h"
  36
  37 size_t
  38 headersEnd(const char *mime, size_t l)
  39 {
  40     size_t e = 0;
  41     int state = 1;
  42
  43     PROF_start(headersEnd);
  44
  45     while (e < l && state < 3) {
  46         switch (state) {
  47
  48         case 0:
  49
  50             if ('\n' == mime[e])
  51                 state = 1;
  52
  53             break;
  54
  55         case 1:
  56             if ('\r' == mime[e])
  57                 state = 2;
  58             else if ('\n' == mime[e])
  59                 state = 3;
  60             else
  61                 state = 0;
  62
  63             break;
  64
  65         case 2:
  66             if ('\n' == mime[e])
  67                 state = 3;
  68             else
  69                 state = 0;
  70
  71             break;
  72
  73         default:
  74             break;
  75         }
  76
  77         ++e;
  78     }
  79     PROF_stop(headersEnd);
  80
  81     if (3 == state)
  82         return e;
  83
  84     return 0;
  85 }