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[squirrelmail.git] / functions / mime.php
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59177427 1<?php
2ba13803 2
35586184 3/**
4 * mime.php
5 *
15e6162e 6 * Copyright (c) 1999-2002 The SquirrelMail Project Team
35586184 7 * Licensed under the GNU GPL. For full terms see the file COPYING.
8 *
9 * This contains the functions necessary to detect and decode MIME
10 * messages.
11 *
12 * $Id$
13 */
b74ba498 14
35586184 15require_once('../functions/imap.php');
16require_once('../functions/attachment_common.php');
8beafbbc 17
451f74a2 18/* --------------------------------------------------------------------------------- */
19/* MIME DECODING */
20/* --------------------------------------------------------------------------------- */
b74ba498 21
451f74a2 22/* This function gets the structure of a message and stores it in the "message" class.
23 * It will return this object for use with all relevant header information and
24 * fully parsed into the standard "message" object format.
25 */
77b88425 26
a4a70693 27function mime_structure ($bodystructure, $flags=array()) {
c9d78ab4 28
a4a70693 29 // isolate the body structure and remove beginning and end parenthesis
30 $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13));
31 $msg = &new message();
451f74a2 32 $read = trim(substr ($read, 0, -1));
a4a70693 33 $msg = $msg->parseStructure($read,0);
34 $msg->setEnt('0');
35 if (count($flags)) {
36 foreach ($flags as $flag) {
37 $char = strtoupper($flag{1});
38 switch ($char) {
39 case 'S':
40 if (strtolower($flag) == '\\seen') {
41 $msg->is_seen = true;
42 }
43 break;
44 case 'A':
45 if (strtolower($flag) == '\\answered') {
46 $msg->is_answered = true;
47 }
48 break;
49 case 'D':
50 if (strtolower($flag) == '\\deleted') {
51 $msg->is_deleted = true;
52 }
53 break;
54 case 'F':
55 if (strtolower($flag) == '\\flagged') {
56 $msg->is_flagged = true;
57 }
58 break;
59 case 'M':
60 if (strtolower($flag) == '\$mdnsent') {
61 $msg->is_mdn = true;
62 }
63 break;
64 default:
65 break;
66 }
67 }
451f74a2 68 }
1d142b8d 69// listEntities($msg);
451f74a2 70 return( $msg );
71}
b74ba498 72
451f74a2 73/* this starts the parsing of a particular structure. It is called recursively,
74 * so it can be passed different structures. It returns an object of type
75 * $message.
76 * First, it checks to see if it is a multipart message. If it is, then it
77 * handles that as it sees is necessary. If it is just a regular entity,
78 * then it parses it and adds the necessary header information (by calling out
79 * to mime_get_elements()
80 */
451f74a2 81
93f92f03 82function mime_fetch_body($imap_stream, $id, $ent_id) {
a4a70693 83 global $uid_support;
09a4bde3 84 /*
85 * do a bit of error correction. If we couldn't find the entity id, just guess
86 * that it is the first one. That is usually the case anyway.
87 */
88 if (!$ent_id) {
451f74a2 89 $ent_id = 1;
09a4bde3 90 }
6ab1bd9e 91 $cmd = "FETCH $id BODY[$ent_id]";
a4a70693 92
93 $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, $uid_support);
77b88425 94 do {
e976319c 95 $topline = trim(array_shift( $data ));
96 } while( $topline && $topline[0] == '*' && !preg_match( '/\* [0-9]+ FETCH.*/i', $topline )) ;
a4a70693 97
451f74a2 98 $wholemessage = implode('', $data);
99 if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) {
77b88425 100
451f74a2 101 $ret = substr( $wholemessage, 0, $regs[1] );
102 /*
103 There is some information in the content info header that could be important
104 in order to parse html messages. Let's get them here.
105 */
106 if ( $ret{0} == '<' ) {
a4a70693 107 $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, $uid_support);
451f74a2 108 }
109 } else if (ereg('"([^"]*)"', $topline, $regs)) {
110 $ret = $regs[1];
111 } else {
112 global $where, $what, $mailbox, $passed_id, $startMessage;
e5ea9327 113 $par = 'mailbox=' . urlencode($mailbox) . "&amp;passed_id=$passed_id";
451f74a2 114 if (isset($where) && isset($what)) {
e5ea9327 115 $par .= '&amp;where='. urlencode($where) . "&amp;what=" . urlencode($what);
a3daaaf3 116 } else {
e5ea9327 117 $par .= "&amp;startMessage=$startMessage&amp;show_more=0";
451f74a2 118 }
e5ea9327 119 $par .= '&amp;response=' . urlencode($response) .
120 '&amp;message=' . urlencode($message).
121 '&amp;topline=' . urlencode($topline);
a019eeb8 122
346817d4 123 echo '<tt><br>' .
124 '<table width="80%"><tr>' .
125 '<tr><td colspan=2>' .
451f74a2 126 _("Body retrieval error. The reason for this is most probably that the message is malformed. Please help us making future versions better by submitting this message to the developers knowledgebase!") .
346817d4 127 " <A HREF=\"../src/retrievalerror.php?$par\"><br>" .
128 _("Submit message") . '</A><BR>&nbsp;' .
129 '</td></tr>' .
130 '<td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" .
131 '<td><b>' . _("Response:") . "</td><td>$response</td></tr>" .
132 '<td><b>' . _("Message:") . "</td><td>$message</td></tr>" .
133 '<td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" .
134 "</table><BR></tt></font><hr>";
135
a4a70693 136 $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, $uid_support);
451f74a2 137 array_shift($data);
138 $wholemessage = implode('', $data);
a019eeb8 139
346817d4 140 $ret = $wholemessage;
a3daaaf3 141 }
451f74a2 142 return( $ret );
143}
d4467150 144
451f74a2 145function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) {
a4a70693 146 global $uid_support;
451f74a2 147 // do a bit of error correction. If we couldn't find the entity id, just guess
148 // that it is the first one. That is usually the case anyway.
149 if (!$ent_id) {
150 $ent_id = 1;
151 }
a4a70693 152 $sid = sqimap_session_id($uid_support);
451f74a2 153 // Don't kill the connection if the browser is over a dialup
154 // and it would take over 30 seconds to download it.
b7206e1d 155
156