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1 | <?php |
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2 | |
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3 | /** |
4 | * mime.php |
5 | * |
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6 | * Copyright (c) 1999-2003 The SquirrelMail Project Team |
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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 | */ |
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14 | |
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15 | require_once(SM_PATH . 'functions/imap.php'); |
16 | require_once(SM_PATH . 'functions/attachment_common.php'); |
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17 | |
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18 | /* -------------------------------------------------------------------------- */ |
19 | /* MIME DECODING */ |
20 | /* -------------------------------------------------------------------------- */ |
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21 | |
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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 | */ |
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26 | |
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27 | function mime_structure ($bodystructure, $flags=array()) { |
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28 | |
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29 | /* Isolate the body structure and remove beginning and end parenthesis. */ |
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30 | $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13)); |
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31 | $read = trim(substr ($read, 0, -1)); |
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32 | $i = 0; |
33 | $msg = Message::parseStructure($read,$i); |
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34 | if (!is_object($msg)) { |
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35 | include_once(SM_PATH . 'functions/display_messages.php'); |
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36 | global $color, $mailbox; |
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37 | /* removed urldecode because $_GET is auto urldecoded ??? */ |
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38 | displayPageHeader( $color, $mailbox ); |
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39 | echo "<BODY TEXT=\"$color[8]\" BGCOLOR=\"$color[4]\" LINK=\"$color[7]\" VLINK=\"$color[7]\" ALINK=\"$color[7]\">\n\n" . |
40 | '<CENTER>'; |
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41 | $errormessage = _("SquirrelMail could not decode the bodystructure of the message"); |
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42 | $errormessage .= '<BR>'._("the provided bodystructure by your imap-server").':<BR><BR>'; |
43 | $errormessage .= '<table><tr><td>' . htmlspecialchars($read) . '</td></tr></table>'; |
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44 | plain_error_message( $errormessage, $color ); |
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45 | echo '</body></html>'; |
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46 | exit; |
47 | } |
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48 | if (count($flags)) { |
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49 | foreach ($flags as $flag) { |
50 | $char = strtoupper($flag{1}); |
51 | switch ($char) { |
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52 | case 'S': |
53 | if (strtolower($flag) == '\\seen') { |
54 | $msg->is_seen = true; |
55 | } |
56 | break; |
57 | case 'A': |
58 | if (strtolower($flag) == '\\answered') { |
59 | $msg->is_answered = true; |
60 | } |
61 | break; |
62 | case 'D': |
63 | if (strtolower($flag) == '\\deleted') { |
64 | $msg->is_deleted = true; |
65 | } |
66 | break; |
67 | case 'F': |
68 | if (strtolower($flag) == '\\flagged') { |
69 | $msg->is_flagged = true; |
70 | } |
71 | break; |
72 | case 'M': |
73 | if (strtolower($flag) == '$mdnsent') { |
74 | $msg->is_mdnsent = true; |
75 | } |
76 | break; |
77 | default: |
78 | break; |
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79 | } |
80 | } |
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81 | } |
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82 | // listEntities($msg); |
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83 | return $msg; |
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84 | } |
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85 | |
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86 | |
87 | |
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88 | /* This starts the parsing of a particular structure. It is called recursively, |
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89 | * so it can be passed different structures. It returns an object of type |
90 | * $message. |
91 | * First, it checks to see if it is a multipart message. If it is, then it |
92 | * handles that as it sees is necessary. If it is just a regular entity, |
93 | * then it parses it and adds the necessary header information (by calling out |
94 | * to mime_get_elements() |
95 | */ |
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96 | |
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97 | function mime_fetch_body($imap_stream, $id, $ent_id=1) { |
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98 | global $uid_support; |
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99 | /* Do a bit of error correction. If we couldn't find the entity id, just guess |
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100 | * that it is the first one. That is usually the case anyway. |
101 | */ |
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102 | |
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103 | if (!$ent_id) { |
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104 | $cmd = "FETCH $id BODY[]"; |
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105 | } else { |
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106 | $cmd = "FETCH $id BODY[$ent_id]"; |
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107 | } |
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108 | |
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109 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, $uid_support); |
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110 | do { |
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111 | $topline = trim(array_shift($data)); |
112 | } while($topline && ($topline[0] == '*') && !preg_match('/\* [0-9]+ FETCH.*/i', $topline)) ; |
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113 | |
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114 | $wholemessage = implode('', $data); |
115 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
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116 | $ret = substr($wholemessage, 0, $regs[1]); |
117 | /* There is some information in the content info header that could be important |
118 | * in order to parse html messages. Let's get them here. |
119 | */ |
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120 | // if ($ret{0} == '<') { |
121 | // $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, $uid_support); |
122 | // } |
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123 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
124 | $ret = $regs[1]; |
125 | } else { |
126 | global $where, $what, $mailbox, $passed_id, $startMessage; |
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127 | $par = 'mailbox=' . urlencode($mailbox) . '&passed_id=' . $passed_id; |
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128 | if (isset($where) && isset($what)) { |
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129 | $par .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
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130 | } else { |
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131 | $par .= '&startMessage=' . $startMessage . '&show_more=0'; |
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132 | } |
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133 | $par .= '&response=' . urlencode($response) . |
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134 | '&message=' . urlencode($message) . |
135 | '&topline=' . urlencode($topline); |
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136 | |
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137 | echo '<tt><br>' . |
138 | '<table width="80%"><tr>' . |
139 | '<tr><td colspan=2>' . |
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140 | _("Body retrieval error. The reason for this is most probably that the message is malformed.") . |
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141 | '</td></tr>' . |
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142 | '<tr><td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
143 | '<tr><td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
144 | '<tr><td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
145 | '<tr><td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
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146 | "</table><BR></tt></font><hr>"; |
147 | |
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148 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, $uid_support); |
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149 | array_shift($data); |
150 | $wholemessage = implode('', $data); |
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151 | |
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152 | $ret = $wholemessage; |
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153 | } |
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154 | return $ret; |
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155 | } |
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156 | |
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157 | function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding) { |
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158 | global $uid_support; |
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159 | |
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160 | /* Don't kill the connection if the browser is over a dialup |
161 | * and it would take over 30 seconds to download it. |
162 |