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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) 1999-2002 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('../functions/imap.php'); |
16 | require_once('../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 |
30 | $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13)); |
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31 | $msg =& new Message(); |
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32 | $read = trim(substr ($read, 0, -1)); |
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33 | $res = $msg->parseStructure($read); |
34 | $msg = $res[0]; |
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35 | if (!is_object($msg)) { |
36 | include_once( '../functions/display_messages.php' ); |
37 | global $color, $mailbox; |
38 | displayPageHeader( $color, urldecode($mailbox) ); |
39 | echo "<BODY TEXT=\"$color[8]\" BGCOLOR=\"$color[4]\" LINK=\"$color[7]\" VLINK=\"$color[7]\" ALINK=\"$color[7]\">\n\n" . |
40 | '<CENTER>'; |
41 | $errormessage = _("Squirrelmail could not decode the bodystructure of the message"); |
42 | $errormessage .= '<BR>'._("the provided bodystructure by your imap-server").':<BR><BR>'; |
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43 | $errormessage .= '<table><tr><td>'.htmlspecialchars($read).'</td></tr></table>'; |
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44 | plain_error_message( $errormessage, $color ); |
45 | echo '</body></html>'; |
46 | exit; |
47 | } |
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48 | $msg->setEnt('0'); |
49 | if (count($flags)) { |
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50 | foreach ($flags as $flag) { |
51 | $char = strtoupper($flag{1}); |
52 | switch ($char) { |
53 | case 'S': |
54 | if (strtolower($flag) == '\\seen') { |
55 | $msg->is_seen = true; |
56 | } |
57 | break; |
58 | case 'A': |
59 | if (strtolower($flag) == '\\answered') { |
60 | $msg->is_answered = true; |
61 | } |
62 | break; |
63 | case 'D': |
64 | if (strtolower($flag) == '\\deleted') { |
65 | $msg->is_deleted = true; |
66 | } |
67 | break; |
68 | case 'F': |
69 | if (strtolower($flag) == '\\flagged') { |
70 | $msg->is_flagged = true; |
71 | } |
72 | break; |
73 | case 'M': |
74 | if (strtolower($flag) == '$mdnsent') { |
75 | $msg->is_mdnsent = true; |
76 | } |
77 | break; |
78 | default: |
79 | break; |
80 | } |
81 | } |
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82 | } |
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83 | // listEntities($msg); |
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84 | return( $msg ); |
85 | } |
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86 | |
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87 | /* this starts the parsing of a particular structure. It is called recursively, |
88 | * so it can be passed different structures. It returns an object of type |
89 | * $message. |
90 | * First, it checks to see if it is a multipart message. If it is, then it |
91 | * handles that as it sees is necessary. If it is just a regular entity, |
92 | * then it parses it and adds the necessary header information (by calling out |
93 | * to mime_get_elements() |
94 | */ |
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95 | |
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96 | function mime_fetch_body($imap_stream, $id, $ent_id) { |
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97 | global $uid_support; |
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98 | /* |
99 | * do a bit of error correction. If we couldn't find the entity id, just guess |
100 | * that it is the first one. That is usually the case anyway. |
101 | */ |
102 | if (!$ent_id) { |
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103 | $ent_id = 1; |
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104 | } |
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105 | $cmd = "FETCH $id BODY[$ent_id]"; |
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106 | |
107 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, $uid_support); |
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108 | do { |
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109 | $topline = trim(array_shift( $data )); |
110 | } while( $topline && $topline[0] == '*' && !preg_match( '/\* [0-9]+ FETCH.*/i', $topline )) ; |
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111 | |
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112 | $wholemessage = implode('', $data); |
113 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
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114 | |
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115 | $ret = substr( $wholemessage, 0, $regs[1] ); |
116 | /* |
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 | */ |
120 | if ( $ret{0} == '<' ) { |
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121 | $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, $uid_support); |
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122 | } |
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) . |
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. Please help us making future versions better by submitting this message to the developers knowledgebase!") . |
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141 | " <A HREF=\"../src/retrievalerror.php?$par\"><br>" . |
142 | _("Submit message") . '</A><BR> ' . |
143 | '</td></tr>' . |
144 | '<td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
145 | '<td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
146 | '<td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
147 | '<td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
148 | "</table><BR></tt></font><hr>"; |
149 | |
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150 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, $uid_support); |
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151 | array_shift($data); |
152 | $wholemessage = implode('', $data); |
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153 | |
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154 | $ret = $wholemessage; |
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155 | } |
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156 | return( $ret ); |
157 | } |
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158 | |
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159 | function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) { |
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160 | global $uid_support; |
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161 | // do a bit of error correction. If we couldn't find the entity id, just guess |
162 | // that it is the first one. That is usually the case anyway. |
163 | if (!$ent_id) { |
164 | $ent_id = 1; |
165 | } |
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166 | $sid = sqimap_session_id($uid_support); |
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167 | // Don't kill the connection if the browser is over a dialup |
168 | // and it would take over 30 seconds to download it. |
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169 | |
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170 |