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mime-parseonlyheader.cc (3690B)

      1 /* -*- Mode: c++; -*- */
      2 /*  --------------------------------------------------------------------
      3  *  Filename:
      4  *    mime-parseonlyheader.cc
      5  *  
      6  *  Description:
      7  *    Implementation of main mime parser components
      8  *
      9  *  Authors:
     10  *    Andreas Aardal Hanssen <andreas-binc curly bincimap spot org>
     11  *
     12  *  Bugs:
     13  *
     14  *  ChangeLog:
     15  *
     16  *  --------------------------------------------------------------------
     17  *  Copyright 2002-2005 Andreas Aardal Hanssen
     18  *
     19  *  This program is free software; you can redistribute it and/or modify
     20  *  it under the terms of the GNU General Public License as published by
     21  *  the Free Software Foundation; either version 2 of the License, or
     22  *  (at your option) any later version.
     23  *
     24  *  This program is distributed in the hope that it will be useful,
     25  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     26  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     27  *  GNU General Public License for more details.
     28  *
     29  *  You should have received a copy of the GNU General Public License
     30  *  along with this program; if not, write to the Free Software
     31  *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
     32  *  --------------------------------------------------------------------
     33  */
     34 #ifdef HAVE_CONFIG_H
     35 #include <config.h>
     36 #endif
     37 
     38 #include "mime.h"
     39 #include "mime-utils.h"
     40 #include "convert.h"
     41 #include "io.h"
     42 #include <string>
     43 #include <vector>
     44 #include <map>
     45 #include <exception>
     46 #include <iostream>
     47 
     48 #include <string.h>
     49 #include <ctype.h>
     50 #include <stdio.h>
     51 #include <errno.h>
     52 
     53 using namespace ::std;
     54 
     55 //------------------------------------------------------------------------
     56 void Binc::MimeDocument::parseOnlyHeader(int fd) const
     57 {
     58   if (allIsParsed || headerIsParsed)
     59     return;
     60   
     61   headerIsParsed = true;
     62 
     63   crlffile = fd;
     64   crlfReset();
     65 
     66   headerstartoffsetcrlf = 0;
     67   headerlength = 0;
     68   bodystartoffsetcrlf = 0;
     69   bodylength = 0;
     70   messagerfc822 = false;
     71   multipart = false;
     72 
     73   nlines = 0;
     74   nbodylines = 0;
     75 
     76   MimePart::parseOnlyHeader("");
     77 }
     78 
     79 //------------------------------------------------------------------------
     80 int Binc::MimePart::parseOnlyHeader(const string &toboundary) const
     81 {
     82   string name;
     83   string content;
     84   char cqueue[4];
     85   memset(cqueue, 0, sizeof(cqueue));
     86 
     87   headerstartoffsetcrlf = crlfoffset;
     88 
     89   bool quit = false;
     90   char c = '\0';
     91 
     92   while (!quit) {
     93     // read name
     94     while (1) {
     95       if (!crlfGetChar(c)) {
     96 	quit = true;
     97 	break;
     98       }
     99 
    100       if (c == '\n') ++nlines;
    101       if (c == ':') break;
    102       if (c == '\n') {
    103 	for (int i = name.length() - 1; i >= 0; --i)
    104 	  crlfUnGetChar();
    105 
    106 	quit = true;
    107 	name = "";
    108 	break;
    109       }
    110 
    111       name += c;
    112 
    113       if (name.length() == 2 && name.substr(0, 2) == "\r\n") {
    114 	name = "";
    115 	quit = true;
    116 	break;
    117       }
    118     }
    119 
    120     if (name.length() == 1 && name[0] == '\r') {
    121       name = "";
    122       break;
    123     }
    124 
    125     if (quit) break;
    126 
    127     while (!quit) {
    128       if (!crlfGetChar(c)) {
    129 	quit = true;
    130 	break;
    131       }
    132 
    133       if (c == '\n') ++nlines;
    134 
    135       for (int i = 0; i < 3; ++i)
    136 	cqueue[i] = cqueue[i + 1];
    137       cqueue[3] = c;
    138 
    139       if (strncmp(cqueue, "\r\n\r\n", 4) == 0) {
    140 	quit = true;
    141 	break;
    142       }
    143 
    144       if (cqueue[2] == '\n') {
    145 
    146 	// guess the mime rfc says what can not appear on the beginning
    147 	// of a line.
    148 	if (!isspace(cqueue[3])) {
    149 	  if (content.length() > 2)
    150 	    content.resize(content.length() - 2);
    151 
    152 	  trim(content);
    153 	  h.add(name, content);
    154 
    155 	  name = c;
    156 	  content = "";
    157 	  break;
    158 	}
    159       }
    160 
    161       content += c;
    162     }
    163   }
    164 
    165   if (name != "") {
    166     if (content.length() > 2)
    167       content.resize(content.length() - 2);
    168     h.add(name, content);
    169   }
    170 
    171   headerlength = crlfoffset - headerstartoffsetcrlf;
    172 
    173   return 1;
    174 }