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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
35586184 18/** Setting up the objects that have the structure for the message **/
19class msg_header {
20 /** msg_header contains generic variables for values that **/
21 /** could be in a header. **/
b74ba498 22
88cb1b4d 23 var $type0 = '', $type1 = '', $boundary = '', $charset = '',
24 $encoding = '', $size = 0, $to = array(), $from = '', $date = '',
25 $cc = array(), $bcc = array(), $reply_to = '', $subject = '',
26 $id = 0, $mailbox = '', $description = '', $filename = '',
27 $entity_id = 0, $message_id = 0, $name = '', $priority = 3;
35586184 28}
b74ba498 29
451f74a2 30class message {
31 /** message is the object that contains messages. It is a recursive
32 object in that through the $entities variable, it can contain
33 more objects of type message. See documentation in mime.txt for
34 a better description of how this works.
35 **/
77b88425 36 var $header = '', $entities = array();
37
451f74a2 38 function addEntity ($msg) {
39 $this->entities[] = $msg;
40 }
41}
8beafbbc 42
451f74a2 43/* --------------------------------------------------------------------------------- */
44/* MIME DECODING */
45/* --------------------------------------------------------------------------------- */
b74ba498 46
451f74a2 47/* This function gets the structure of a message and stores it in the "message" class.
48 * It will return this object for use with all relevant header information and
49 * fully parsed into the standard "message" object format.
50 */
51function mime_structure ($imap_stream, $header) {
52
451f74a2 53 $ssid = sqimap_session_id();
54 $lsid = strlen( $ssid );
55 $id = $header->id;
56 fputs ($imap_stream, "$ssid FETCH $id BODYSTRUCTURE\r\n");
57 //
58 // This should use sqimap_read_data instead of reading it itself
59 //
77b88425 60 $read = fgets ($imap_stream, 9216);
451f74a2 61 $bodystructure = '';
62 while ( substr($read, 0, $lsid) <> $ssid &&
63 !feof( $imap_stream ) ) {
64 $bodystructure .= $read;
77b88425 65 $read = fgets ($imap_stream, 9216);
451f74a2 66 }
67 $read = $bodystructure;
77b88425 68
451f74a2 69 // isolate the body structure and remove beginning and end parenthesis
70 $read = trim(substr ($read, strpos(strtolower($read), 'bodystructure') + 13));
71 $read = trim(substr ($read, 0, -1));
72 $end = mime_match_parenthesis(0, $read);
73 while ($end == strlen($read)-1) {
74 $read = trim(substr ($read, 0, -1));
75 $read = trim(substr ($read, 1));
76 $end = mime_match_parenthesis(0, $read);
77 }
77b88425 78
451f74a2 79 $msg = mime_parse_structure ($read, 0);
80 $msg->header = $header;
77b88425 81
451f74a2 82 return( $msg );
83}
b74ba498 84
451f74a2 85/* this starts the parsing of a particular structure. It is called recursively,
86 * so it can be passed different structures. It returns an object of type
87 * $message.
88 * First, it checks to see if it is a multipart message. If it is, then it
89 * handles that as it sees is necessary. If it is just a regular entity,
90 * then it parses it and adds the necessary header information (by calling out
91 * to mime_get_elements()
92 */
93function mime_parse_structure ($structure, $ent_id) {
94
95 $msg = new message();
96 if ($structure{0} == '(') {
97 $ent_id = mime_new_element_level($ent_id);
98 $start = $end = -1;
99 do {
100 $start = $end+1;
101 $end = mime_match_parenthesis ($start, $structure);
102
103 $element = substr($structure, $start+1, ($end - $start)-1);
104 $ent_id = mime_increment_id ($ent_id);
105 $newmsg = mime_parse_structure ($element, $ent_id);
106 $msg->addEntity ($newmsg);
107 } while ($structure{$end+1} == '(');
108 } else {
109 // parse the elements
110 $msg = mime_get_element ($structure, $msg, $ent_id);
111 }
112 return $msg;
113}
e4a256af 114
451f74a2 115/* Increments the element ID. An element id can look like any of
116 * the following: 1, 1.2, 4.3.2.4.1, etc. This function increments
117 * the last number of the element id, changing 1.2 to 1.3.
118 */
119function mime_increment_id ($id) {
120
77b88425 121 if (strpos($id, '.')) {
122 $first = substr($id, 0, strrpos($id, '.'));
123 $last = substr($id, strrpos($id, '.')+1);
451f74a2 124 $last++;
77b88425 125 $new = $first . '.' .$last;
451f74a2 126 } else {
127 $new = $id + 1;
128 }
77b88425 129
451f74a2 130 return $new;
131}
132
133/*
134 * See comment for mime_increment_id().
135 * This adds another level on to the entity_id changing 1.3 to 1.3.0
136 * NOTE: 1.3.0 is not a valid element ID. It MUST be incremented
137 * before it can be used. I left it this way so as not to have
138 * to make a special case if it is the first entity_id. It
139 * always increments it, and that works fine.
140 */
141function mime_new_element_level ($id) {
142
77b88425 143 if (!$id) {
144 $id = 0;
145 } else {
146 $id = $id . '.0';
147 }
451f74a2 148
77b88425 149 return( $id );
451f74a2 150}
151
152function mime_get_element (&$structure, $msg, $ent_id) {
153
154 $elem_num = 1;
155 $msg->header = new msg_header();
156 $msg->header->entity_id = $ent_id;
157 $properties = array();
158
159 while (strlen($structure) > 0) {
160 $structure = trim($structure);
161 $char = $structure{0};
162
163 if (strtolower(substr($structure, 0, 3)) == 'nil') {
164 $text = '';
165 $structure = substr($structure, 3);
166 } else if ($char == '"') {
167 // loop through until we find the matching quote, and return that as a string
168 $pos = 1;
169 $text = '';
170 while ( ($char = $structure{$pos} ) <> '"' && $pos < strlen($structure)) {
171 $text .= $char;
172 $pos++;
173 }
174 $structure = substr($structure, strlen($text) + 2);
175 } else if ($char == '(') {
176 // comment me
177 $end = mime_match_parenthesis (0, $structure);
178 $sub = substr($structure, 1, $end-1);
179 $properties = mime_get_props($properties, $sub);
180 $structure = substr($structure, strlen($sub) + 2);
181 } else {
182 // loop through until we find a space or an end parenthesis
183 $pos = 0;
184 $char = $structure{$pos};
185 $text = '';
186 while ($char != ' ' && $char != ')' && $pos < strlen($structure)) {
187 $text .= $char;
188 $pos++;
189 $char = $structure{$pos};
190 }
191 $structure = substr($structure, strlen($text));
192 }
193
194 // This is where all the text parts get put into the header
195 switch ($elem_num) {
196 case 1:
197 $msg->header->type0 = strtolower($text);
198 break;
199 case 2:
200 $msg->header->type1 = strtolower($text);
201 break;
202 case 4: // Id
203 // Invisimail enclose images with <>
204 $msg->header->id = str_replace( '<', '', str_replace( '>', '', $text ) );
205 break;
206 case 5:
207 $msg->header->description = $text;
208 break;
209 case 6:
210 $msg->header->encoding = strtolower($text);
211 break;
212 case 7:
213 $msg->header->size = $text;
214 break;
215 default:
216 if ($msg->header->type0 == 'text' && $elem_num == 8) {
217 // This is a plain text message, so lets get the number of lines
218 // that it contains.
219 $msg->header->num_lines = $text;
220
221 } else if ($msg->header->type0 == 'message' && $msg->header->type1 == 'rfc822' && $elem_num == 8) {
222 // This is an encapsulated message, so lets start all over again and
223 // parse this message adding it on to the existing one.
224 $structure = trim($structure);
225 if ( $structure{0} == '(' ) {
226 $e = mime_match_parenthesis (0, $structure);
227 $structure = substr($structure, 0, $e);
228 $structure = substr($structure, 1);
229 $m = mime_parse_structure($structure, $msg->header->entity_id);
230
231 // the following conditional is there to correct a bug that wasn't
232 // incrementing the entity IDs correctly because of the special case
233 // that message/rfc822 is. This fixes it fine.
234 if (substr($structure, 1, 1) != '(')
235 $m->header->entity_id = mime_increment_id(mime_new_element_level($ent_id));
236
237 // Now we'll go through and reformat the results.
238 if ($m->entities) {
239 for ($i=0; $i < count($m->entities); $i++) {
240 $msg->addEntity($m->entities[$i]);
241 }
242 } else {
243 $msg->addEntity($m);
244 }
245 $structure = "";
246 }
247 }
248 break;
249 }
250 $elem_num++;
251 $text = "";
252 }
253 // loop through the additional properties and put those in the various headers
f0c4dc12 254// if ($msg->header->type0 != 'message') {
451f74a2 255 for ($i=0; $i < count($properties); $i++) {
256 $msg->header->{$properties[$i]['name']} = $properties[$i]['value'];
257 }
f0c4dc12 258// }
451f74a2 259
260 return $msg;
261}
262
263/*
264 * I did most of the MIME stuff yesterday (June 20, 2000), but I couldn't
265 * figure out how to do this part, so I decided to go to bed. I woke up
266 * in the morning and had a flash of insight. I went to the white-board
267 * and scribbled it out, then spent a bit programming it, and this is the
268 * result. Nothing complicated, but I think my brain was fried yesterday.
269 * Funny how that happens some times.
270 *
271 * This gets properties in a nested parenthesisized list. For example,
272 * this would get passed something like: ("attachment" ("filename" "luke.tar.gz"))
273 * This returns an array called $props with all paired up properties.
274 * It ignores the "attachment" for now, maybe that should change later
275 * down the road. In this case, what is returned is:
276 * $props[0]["name"] = "filename";
277 * $props[0]["value"] = "luke.tar.gz";
278 */
279function mime_get_props ($props, $structure) {
280
281 while (strlen($structure) > 0) {
282 $structure = trim($structure);
283 $char = $structure{0};
284
285 if ($char == '"') {
286 $pos = 1;
287 $tmp = '';
288 while ( ( $char = $structure{$pos} ) != '"' &&
289 $pos < strlen($structure)) {
290 $tmp .= $char;
291 $pos++;
292 }
293 $structure = trim(substr($structure, strlen($tmp) + 2));
294 $char = $structure{0};
295
296 if ($char == '"') {
297 $pos = 1;
298 $value = '';
299 while ( ( $char = $structure{$pos} ) != '"' &&
300 $pos < strlen($structure) ) {
301 $value .= $char;
302 $pos++;
303 }
304 $structure = trim(substr($structure, strlen($tmp) + 2));
305
306 $k = count($props);
307 $props[$k]['name'] = strtolower($tmp);
308 $props[$k]['value'] = $value;
309 } else if ($char == '(') {
310 $end = mime_match_parenthesis (0, $structure);
311 $sub = substr($structure, 1, $end-1);
312 if (! isset($props))
313 $props = array();
314 $props = mime_get_props($props, $sub);
315 $structure = substr($structure, strlen($sub) + 2);
316 }
317 return $props;
318 } else if ($char == '(') {
319 $end = mime_match_parenthesis (0, $structure);
320 $sub = substr($structure, 1, $end-1);
321 $props = mime_get_props($props, $sub);
322 $structure = substr($structure, strlen($sub) + 2);
323 return $props;
324 } else {
325 return $props;
326 }
327 }
328}
329
330/*
331 * Matches parenthesis. It will return the position of the matching
332 * parenthesis in $structure. For instance, if $structure was:
333 * ("text" "plain" ("val1name", "1") nil ... )
334 * x x
335 * then this would return 42 to match up those two.
336 */
337function mime_match_parenthesis ($pos, $structure) {
338
339 $j = strlen( $structure );
340
341 // ignore all extra characters
342 // If inside of a string, skip string -- Boundary IDs and other
343 // things can have ) in them.
344 if ( $structure{$pos} != '(' ) {
345 return( $j );
346 }
347
348 while ( $pos < $j ) {
349 $pos++;
350 if ($structure{$pos} == ')') {
8beafbbc 351 return $pos;
451f74a2 352 } elseif ($structure{$pos} == '"') {
b74ba498 353 $pos++;
451f74a2 354 while ( $structure{$pos} != '"' &&
355 $pos < $j ) {
356 if (substr($structure, $pos, 2) == '\\"') {
b74ba498 357 $pos++;
451f74a2 358 } elseif (substr($structure, $pos, 2) == '\\\\') {
b74ba498 359 $pos++;
451f74a2 360 }
b74ba498 361 $pos++;
5ffe5a7e 362 }
451f74a2 363 } elseif ( $structure{$pos} == '(' ) {
8beafbbc 364 $pos = mime_match_parenthesis ($pos, $structure);
451f74a2 365 }
366 }
367 echo _("Error decoding mime structure. Report this as a bug!") . '<br>';
368 return( $pos );
369}
370
346817d4 371function mime_fetch_body($imap_stream, $id, $ent_id ) {
09a4bde3 372
373 /*
374 * do a bit of error correction. If we couldn't find the entity id, just guess
375 * that it is the first one. That is usually the case anyway.
376 */
377 if (!$ent_id) {
451f74a2 378 $ent_id = 1;
09a4bde3 379 }
346817d4 380
6ab1bd9e 381 $cmd = "FETCH $id BODY[$ent_id]";
346817d4 382 $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message);
77b88425 383
384 do {
e976319c 385 $topline = trim(array_shift( $data ));
386 } while( $topline && $topline[0] == '*' && !preg_match( '/\* [0-9]+ FETCH.*/i', $topline )) ;
451f74a2 387 $wholemessage = implode('', $data);
388 if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) {
77b88425 389
451f74a2 390 $ret = substr( $wholemessage, 0, $regs[1] );
391 /*
392 There is some information in the content info header that could be important
393 in order to parse html messages. Let's get them here.
394 */
395 if ( $ret{0} == '<' ) {
1c72b151 396 $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message);
e5ea9327 397 /* BASE within HTML documents is illegal (see w3 spec)
398* $base = '';
399* $k = 10;
400* foreach( $data as $d ) {
401* if ( substr( $d, 0, 13 ) == 'Content-Base:' ) {
402* $j = strlen( $d );
403* $i = 13;
404* $base = '';
405* while ( $i < $j &&
406* ( !isNoSep( $d{$i} ) || $d{$i} == '"' ) )
407* $i++;
408* while ( $i < $j ) {
409* if ( isNoSep( $d{$i} ) )
410* $base .= $d{$i};
411* $i++;
412* }
413* $k = 0;
414* } elseif ( $k == 1 && !isnosep( $d{0} ) ) {
415* $base .= substr( $d, 1 );
416* }
417* $k++;
418* }
419* if ( $base <> '' ) {
420* $ret = "<base href=\"$base\">" . $ret;
421* }
7e235a1a 422* */
451f74a2 423 }
424 } else if (ereg('"([^"]*)"', $topline, $regs)) {
425 $ret = $regs[1];
426 } else {
427 global $where, $what, $mailbox, $passed_id, $startMessage;
e5ea9327 428 $par = 'mailbox=' . urlencode($mailbox) . "&amp;passed_id=$passed_id";
451f74a2 429 if (isset($where) && isset($what)) {
e5ea9327 430 $par .= '&amp;where='. urlencode($where) . "&amp;what=" . urlencode($what);
a3daaaf3 431 } else {
e5ea9327 432 $par .= "&amp;startMessage=$startMessage&amp;show_more=0";
451f74a2 433 }
e5ea9327 434 $par .= '&amp;response=' . urlencode($response) .
435 '&amp;message=' . urlencode($message).
436 '&amp;topline=' . urlencode($topline);
a019eeb8 437
346817d4 438 echo '<tt><br>' .
439 '<table width="80%"><tr>' .
440 '<tr><td colspan=2>' .
451f74a2 441 _("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 442 " <A HREF=\"../src/retrievalerror.php?$par\"><br>" .
443 _("Submit message") . '</A><BR>&nbsp;' .
444 '</td></tr>' .
445 '<td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" .
446 '<td><b>' . _("Response:") . "</td><td>$response</td></tr>" .
447 '<td><b>' . _("Message:") . "</td><td>$message</td></tr>" .
448 '<td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" .
449 "</table><BR></tt></font><hr>";
450
1c72b151 451 $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message);
451f74a2 452 array_shift($data);
453 $wholemessage = implode('', $data);
a019eeb8 454
346817d4 455 $ret = $wholemessage;
a3daaaf3 456 }
451f74a2 457 return( $ret );
458}
d4467150 459
451f74a2 460function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) {
461 // do a bit of error correction. If we couldn't find the entity id, just guess
462 // that it is the first one. That is usually the case anyway.
463 if (!$ent_id) {
464 $ent_id = 1;
465 }
466 $sid = sqimap_session_id();
467 // Don't kill the connection if the browser is over a dialup
468 // and it would take over 30 seconds to download it.
b7206e1d 469
470 // donīt call set_time_limit in safe mode.
471 if (!ini_get("safe_mode")) {
472 set_time_limit(0);
473 }
346817d4 474
451f74a2 475 fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n");
476 $cnt = 0;
477 $continue = true;
478 $read = fgets ($imap_stream,4096);
479 // This could be bad -- if the section has sqimap_session_id() . ' OK'
480 // or similar, it will kill the download.
481 while (!ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) {
482 if (trim($read) == ')==') {
483 $read1 = $read;
b74ba498 484 $read = fgets ($imap_stream,4096);
451f74a2 485 if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) {
486 return;
487 } else {
488 echo decodeBody($read1, $encoding) .
489 decodeBody($read, $encoding);
490 }
491 } else if ($cnt) {
492 echo decodeBody($read, $encoding);
b74ba498 493 }
451f74a2 494 $read = fgets ($imap_stream,4096);
495 $cnt++;
496 }
497}
beb9e459 498
451f74a2 499/* -[ END MIME DECODING ]----------------------------------------------------------- */
d4467150 500
aceb0d5c 501
d4467150 502
451f74a2 503/* This is the first function called. It decides if this is a multipart
504 message or if it should be handled as a single entity
505 */
506function decodeMime ($imap_stream, &$header) {
507 global $username, $key, $imapServerAddress, $imapPort;
508 return mime_structure ($imap_stream, $header);
509}
ea48eb25 510
451f74a2 511// This is here for debugging purposese. It will print out a list
512// of all the entity IDs that are in the $message object.
f0c4dc12 513
451f74a2 514function listEntities ($message) {
515if ($message) {
516 if ($message->header->entity_id)
517 echo "<tt>" . $message->header->entity_id . ' : ' . $message->header->type0 . '/' . $message->header->type1 . '<br>';
518 for ($i = 0; $message->entities[$i]; $i++) {
519 $msg = listEntities($message->entities[$i], $ent_id);
520 if ($msg)
521 return $msg;
522 }
523}
524}
f0c4dc12 525
451f74a2 526
527/* returns a $message object for a particular entity id */
528function getEntity ($message, $ent_id) {
529 if ($message) {
530 if ($message->header->entity_id == $ent_id && strlen($ent_id) == strlen($message->header->entity_id)) {
8beafbbc 531 return $message;
451f74a2 532 } else {
cd928157 533 for ($i = 0; isset($message->entities[$i]); $i++) {
451f74a2 534 $msg = getEntity ($message->entities[$i], $ent_id);
535 if ($msg) {
536 return $msg;
537 }
b1dadc61 538 }
451f74a2 539 }
540 }
541}
8beafbbc 542
451f74a2 543/*
544 * figures out what entity to display and returns the $message object
545 * for that entity.
546 */
547function findDisplayEntity ($message, $textOnly = 1) {
548 global $show_html_default;
549
550 $entity = 0;
551
552 if ($message) {
553 if ( $message->header->type0 == 'multipart' &&
554 ( $message->header->type1 == 'alternative' ||
f0c4dc12 555 $message->header->type1 == 'mixed' ||
451f74a2 556 $message->header->type1 == 'related' ) &&
557 $show_html_default && ! $textOnly ) {
558 $entity = findDisplayEntityHTML($message);
559 }
f0c4dc12 560
451f74a2 561 // Show text/plain or text/html -- the first one we find.
562 if ( $entity == 0 &&
563 $message->header->type0 == 'text' &&
564 ( $message->header->type1 == 'plain' ||
565 $message->header->type1 == 'html' ) &&
566 isset($message->header->entity_id) ) {
567 $entity = $message->header->entity_id;
568 }
569
570 $i = 0;
571 while ($entity == 0 && isset($message->entities[$i]) ) {
572 $entity = findDisplayEntity($message->entities[$i], $textOnly);
573 $i++;
a3daaaf3 574 }
a3daaaf3 575 }
451f74a2 576
577 return( $entity );
578}
b74ba498 579
451f74a2 580/* Shows the HTML version */
581function findDisplayEntityHTML ($message) {
8405ee35 582
451f74a2 583 if ( $message->header->type0 == 'text' &&
584 $message->header->type1 == 'html' &&
585 isset($message->header->entity_id)) {
586 return $message->header->entity_id;
587 }
588 for ($i = 0; isset($message->entities[$i]); $i ++) {
f0c4dc12 589 if ( $message->header->type0 == 'message' &&
590 $message->header->type1 == 'rfc822' &&
591 isset($message->header->entity_id)) {
592 return 0;
593 }
451f74a2 594 $entity = findDisplayEntityHTML($message->entities[$i]);
595 if ($entity != 0) {
596 return $entity;
597 }
598 }
599
600 return 0;
601}
602
da4c66e8 603/*
604 * translateText
605 * Extracted from strings.php 23/03/2002
606 */
607
608function translateText(&$body, $wrap_at, $charset) {
609 global $where, $what; /* from searching */
610 global $color; /* color theme */
611
612 require_once('../functions/url_parser.php');
613
614 $body_ary = explode("\n", $body);
615 $PriorQuotes = 0;
616 for ($i=0; $i < count($body_ary); $i++) {
617 $line = $body_ary[$i];
618 if (strlen($line) - 2 >= $wrap_at) {
619 sqWordWrap($line, $wrap_at);
620 }
621 $line = charset_decode($charset, $line);
622 $line = str_replace("\t", ' ', $line);
623
624 parseUrl ($line);
625
626 $Quotes = 0;
627 $pos = 0;
628 $j = strlen( $line );
629
630 while ( $pos < $j ) {
631 if ($line[$pos] == ' ') {
632 $pos ++;
633 } else if (strpos($line, '&gt;', $pos) === $pos) {
634 $pos += 4;
635 $Quotes ++;
636 } else {
637 break;
638 }
639 }
640
641 if ($Quotes > 1) {
642 if (! isset($color[14])) {
643 $color[14] = '#FF0000';
644 }
645 $line = '<FONT COLOR="' . $color[14] . '">' . $line . '</FONT>';
646 } elseif ($Quotes) {
647 if (! isset($color[13])) {
648 $color[13] = '#800000';
649 }
650 $line = '<FONT COLOR="' . $color[13] . '">' . $line . '</FONT>';
651 }
652
653 $body_ary[$i] = $line;
654 }
655 $body = '<pre>' . implode("\n", $body_ary) . '</pre>';
656}
657
451f74a2 658/* This returns a parsed string called $body. That string can then
659be displayed as the actual message in the HTML. It contains
660everything needed, including HTML Tags, Attachments at the
661bottom, etc.
662*/
663function formatBody($imap_stream, $message, $color, $wrap_at) {
664 // this if statement checks for the entity to show as the
665 // primary message. To add more of them, just put them in the
666 // order that is their priority.
e198531f 667 global $startMessage, $username, $key, $imapServerAddress, $imapPort, $body,
d03c24f4 668 $show_html_default, $has_unsafe_images, $view_unsafe_images, $sort;
669
670 $has_unsafe_images = 0;
7e235a1a 671
451f74a2 672 $id = $message->header->id;
f0c4dc12 673
451f74a2 674 $urlmailbox = urlencode($message->header->mailbox);
7e235a1a 675
451f74a2 676 // Get the right entity and redefine message to be this entity
677 // Pass the 0 to mean that we want the 'best' viewable one
678 $ent_num = findDisplayEntity ($message, 0);
679 $body_message = getEntity($message, $ent_num);
f0c4dc12 680
451f74a2 681 if (($body_message->header->type0 == 'text') ||
682 ($body_message->header->type0 == 'rfc822')) {
451f74a2 683 $body = mime_fetch_body ($imap_stream, $id, $ent_num);
684 $body = decodeBody($body, $body_message->header->encoding);
685 $hookResults = do_hook("message_body", $body);
686 $body = $hookResults[1];
7e235a1a 687
451f74a2 688 // If there are other types that shouldn't be formatted, add
689 // them here
690 if ($body_message->header->type1 == 'html') {
691 if ( $show_html_default <> 1 ) {
a3daaaf3 692 $body = strip_tags( $body );
693 translateText($body, $wrap_at, $body_message->header->charset);
694 } else {
695 $body = MagicHTML( $body, $id );
696 }
451f74a2 697 } else {
9eea179c 698 translateText($body, $wrap_at, $body_message->header->charset);
451f74a2 699 }
793cc001 700
e5ea9327 701 $body .= "<CENTER><SMALL><A HREF=\"../src/download.php?absolute_dl=true&amp;passed_id=$id&amp;passed_ent_id=$ent_num&amp;mailbox=$urlmailbox&amp;showHeaders=1\">". _("Download this as a file") ."</A></SMALL></CENTER><BR>";
7e235a1a 702 if ($has_unsafe_images) {
703 if ($view_unsafe_images) {
3d1c7564 704 $body .= "<CENTER><SMALL><A HREF=\"read_body.php?passed_id=$id&amp;mailbox=$urlmailbox&amp;sort=$sort&amp;startMessage=$startMessage&amp;show_more=0\">". _("Hide Unsafe Images") ."</A></SMALL></CENTER><BR>\n";
d03c24f4 705 } else {
3d1c7564 706 $body .= "<CENTER><SMALL><A HREF=\"read_body.php?passed_id=$id&amp;mailbox=$urlmailbox&amp;sort=$sort&amp;startMessage=$startMessage&amp;show_more=0&amp;view_unsafe_images=1\">". _("View Unsafe Images") ."</A></SMALL></CENTER><BR>\n";
d03c24f4 707 }
7e235a1a 708 }
77b88425 709
451f74a2 710 /** Display the ATTACHMENTS: message if there's more than one part **/
451f74a2 711 if (isset($message->entities[0])) {
712 $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id);
713 }
451f74a2 714 } else {
715 $body = formatAttachments ($message, -1, $message->header->mailbox, $id);
716 }
717 return ($body);
718}
b74ba498 719
451f74a2 720/*
721 * A recursive function that returns a list of attachments with links
722 * to where to download these attachments
723 */
77b88425 724function formatAttachments($message, $ent_id, $mailbox, $id) {
725 global $where, $what;
726 global $startMessage, $color;
727 static $ShownHTML = 0;
451f74a2 728
77b88425 729 $body = '';
730 if ($ShownHTML == 0) {
451f74a2 731
77b88425 732 $ShownHTML = 1;
451f74a2 733 $body .= "<TABLE WIDTH=\"100%\" CELLSPACING=0 CELLPADDING=2 BORDER=0 BGCOLOR=\"$color[0]\"><TR>\n" .
77b88425 734 "<TH ALIGN=\"left\" BGCOLOR=\"$color[9]\"><B>\n" .
735 _("Attachments") . ':' .
736 "</B></TH></TR><TR><TD>\n" .
737 "<TABLE CELLSPACING=0 CELLPADDING=1 BORDER=0>\n" .
738 formatAttachments($message, $ent_id, $mailbox, $id) .
739 "</TABLE></TD></TR></TABLE>";
740
741 } else if ($message) {
f0c4dc12 742 $header = $message->header;
743 $type0 = strtolower($header->type0);
744 $type1 = strtolower($header->type1);
745 $name = decodeHeader($header->name);
746
747 if ($type0 =='message' && $type1 = 'rfc822') {
748
749 $filename = decodeHeader($message->header->filename);
750 if (trim($filename) == '') {
751 if (trim($name) == '') {
752 $display_filename = 'untitled-[' . $message->header->entity_id . ']' ;
753 } else {
754 $display_filename = $name;
755 $filename = $name;
756 }
757 } else {
758 $display_filename = $filename;
759 }
760
761 $urlMailbox = urlencode($mailbox);
762 $ent = urlencode($message->header->entity_id);
763
764 $DefaultLink =
765 "../src/download.php?startMessage=$startMessage&amp;passed_id=$id&amp;mailbox=$urlMailbox&amp;passed_ent_id=$ent";
766 if ($where && $what) {
767 $DefaultLink .= '&amp;where=' . urlencode($where) . '&amp;what=' . urlencode($what);
768 }
769 $Links['download link']['text'] = _("download");
770 $Links['download link']['href'] =
771 "../src/download.php?absolute_dl=true&amp;passed_id=$id&amp;mailbox=$urlMailbox&amp;passed_ent_id=$ent";
772 $ImageURL = '';
773
774 /* this executes the attachment hook with a specific MIME-type.
775 * if that doens't have results, it tries if there's a rule
776 * for a more generic type. */
777 $HookResults = do_hook("attachment $type0/$type1", $Links,
778 $startMessage, $id, $urlMailbox, $ent, $DefaultLink, $display_filename, $where, $what);
779 if(count($HookResults[1]) <= 1) {
780 $HookResults = do_hook("attachment $type0/*", $Links,
781 $startMessage, $id, $urlMailbox, $ent, $DefaultLink,
782 $display_filename, $where, $what);
783 }
784
785 $Links = $HookResults[1];
786 $DefaultLink = $HookResults[6];
787
788 $body .= '<TR><TD>&nbsp;&nbsp;</TD><TD>' .
789 "<A HREF=\"$DefaultLink\">$display_filename</A>&nbsp;</TD>" .
790 '<TD><SMALL><b>' . show_readable_size($message->header->size) .
791 '</b>&nbsp;&nbsp;</small></TD>' .
792 "<TD><SMALL>[ $type0/$type1 ]&nbsp;</SMALL></TD>" .
793 '<TD><SMALL>';
794 if ($message->header->description) {
795 $body .= '<b>' . htmlspecialchars(_($message->header->description)) . '</b>';
796 }
797 $body .= '</SMALL></TD><TD><SMALL>&nbsp;';
798
799
800 $SkipSpaces = 1;
801 foreach ($Links as $Val) {
802 if ($SkipSpaces) {
803 $SkipSpaces = 0;
804 } else {
805 $body .= '&nbsp;&nbsp;|&nbsp;&nbsp;';
806 }
807 $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>';
808 }
809
810 unset($Links);
77b88425 811
f0c4dc12 812 $body .= "</SMALL></TD></TR>\n";
813
814 return( $body );
815
816 } elseif (!$message->entities) {
77b88425 817
818 $type0 = strtolower($message->header->type0);
819 $type1 = strtolower($message->header->type1);
820 $name = decodeHeader($message->header->name);
821
822 if ($message->header->entity_id != $ent_id) {
823 $filename = decodeHeader($message->header->filename);
824 if (trim($filename) == '') {
825 if (trim($name) == '') {
826 if ( trim( $message->header->id ) == '' )
827 $display_filename = 'untitled-[' . $message->header->entity_id . ']' ;
828 else
829 $display_filename = 'cid: ' . $message->header->id;
830 // $display_filename = 'untitled-[' . $message->header->entity_id . ']' ;
831 } else {
832 $display_filename = $name;
833 $filename = $name;
834 }
835 } else {
836 $display_filename = $filename;
837 }
451f74a2 838
77b88425 839 $urlMailbox = urlencode($mailbox);
840 $ent = urlencode($message->header->entity_id);
451f74a2 841
77b88425 842 $DefaultLink =
e5ea9327 843 "../src/download.php?startMessage=$startMessage&amp;passed_id=$id&amp;mailbox=$urlMailbox&amp;passed_ent_id=$ent";
77b88425 844 if ($where && $what) {
e5ea9327 845 $DefaultLink .= '&amp;where=' . urlencode($where) . '&amp;what=' . urlencode($what);
77b88425 846 }
847 $Links['download link']['text'] = _("download");
848 $Links['download link']['href'] =
e5ea9327 849 "../src/download.php?absolute_dl=true&amp;passed_id=$id&amp;mailbox=$urlMailbox&amp;passed_ent_id=$ent";
77b88425 850 $ImageURL = '';
851
852 /* this executes the attachment hook with a specific MIME-type.
853 * if that doens't have results, it tries if there's a rule
854 * for a more generic type. */
855 $HookResults = do_hook("attachment $type0/$type1", $Links,
856 $startMessage, $id, $urlMailbox, $ent, $DefaultLink,
857 $display_filename, $where, $what);
858 if(count($HookResults[1]) <= 1) {
859 $HookResults = do_hook("attachment $type0/*", $Links,
860 $startMessage, $id, $urlMailbox, $ent, $DefaultLink,
861 $display_filename, $where, $what);
862 }
451f74a2 863
77b88425 864 $Links = $HookResults[1];
865 $DefaultLink = $HookResults[6];
866
867 $body .= '<TR><TD>&nbsp;&nbsp;</TD><TD>' .
868 "<A HREF=\"$DefaultLink\">$display_filename</A>&nbsp;</TD>" .
869 '<TD><SMALL><b>' . show_readable_size($message->header->size) .
870 '</b>&nbsp;&nbsp;</small></TD>' .
871 "<TD><SMALL>[ $type0/$type1 ]&nbsp;</SMALL></TD>" .
872 '<TD><SMALL>';
873 if ($message->header->description) {
874 $body .= '<b>' . htmlspecialchars(_($message->header->description)) . '</b>';
875 }
876 $body .= '</SMALL></TD><TD><SMALL>&nbsp;';
b74ba498 877
b74ba498 878
77b88425 879 $SkipSpaces = 1;
880 foreach ($Links as $Val) {
881 if ($SkipSpaces) {
882 $SkipSpaces = 0;
883 } else {
884 $body .= '&nbsp;&nbsp;|&nbsp;&nbsp;';
885 }
886 $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>';
887 }
888
889 unset($Links);
890
891 $body .= "</SMALL></TD></TR>\n";
892 }
893 } else {
894 for ($i = 0; $i < count($message->entities); $i++) {
895 $body .= formatAttachments($message->entities[$i], $ent_id, $mailbox, $id);
896 }
451f74a2 897 }
77b88425 898 }
899 return( $body );
451f74a2 900}
b74ba498 901
b74ba498 902
451f74a2 903/** this function decodes the body depending on the encoding type. **/
904function decodeBody($body, $encoding) {
905 $body = str_replace("\r\n", "\n", $body);
906 $encoding = strtolower($encoding);
b74ba498 907
451f74a2 908 global $show_html_default;
4809f489 909
451f74a2 910 if ($encoding == 'quoted-printable') {
911 $body = quoted_printable_decode($body);
4809f489 912
7831268e 913
451f74a2 914 while (ereg("=\n", $body))
915 $body = ereg_replace ("=\n", "", $body);
358f007e 916
451f74a2 917 } else if ($encoding == 'base64') {
918 $body = base64_decode($body);
919 }
b74ba498 920
451f74a2 921 // All other encodings are returned raw.
922 return $body;
923}
924
925/*
926 * This functions decode strings that is encoded according to
927 * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text).
928 */
929function decodeHeader ($string, $utfencode=true) {
18aa168e 930
931if ( is_array( $string ) ) {
932 $string = implode("\n", $string );
933}
934
935if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=',
451f74a2 936 $string, $res)) {
18aa168e 937 if (ucfirst($res[2]) == 'B') {
451f74a2 938 $replace = base64_decode($res[3]);
18aa168e 939 } else {
0f8a1ce9 940 $replace = str_replace('_', ' ', $res[3]);
18aa168e 941 // Convert lowercase Quoted Printable to uppercase for
942 // quoted_printable_decode to understand it.
943 while (ereg("(=(([0-9][abcdef])|([abcdef][0-9])|([abcdef][abcdef])))",
944 $replace, $res)) {
945 $replace = str_replace($res[1], strtoupper($res[1]), $replace);
946 }
451f74a2 947 $replace = quoted_printable_decode($replace);
18aa168e 948 }
949 /* Only encode into entities by default. Some places
451f74a2 950 don't need the encoding, like the compose form. */
18aa168e 951 if ($utfencode){
952 $replace = charset_decode ($res[1], $replace);
953 }
954
955 // Remove the name of the character set.
956 $string = eregi_replace ('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=',
957 $replace, $string);
451f74a2 958
18aa168e 959 // In case there should be more encoding in the string: recurse
960 $string = decodeHeader($string);
961}
451f74a2 962
18aa168e 963return ($string);
451f74a2 964}
965
966/*
967 * Encode a string according to RFC 1522 for use in headers if it
968 * contains 8-bit characters or anything that looks like it should
969 * be encoded.
970 */
971function encodeHeader ($string) {
972 global $default_charset;
793cc001 973
451f74a2 974 // Encode only if the string contains 8-bit characters or =?
975 $j = strlen( $string );
976 $l = strstr($string, '=?'); // Must be encoded ?
977 $ret = '';
978 for( $i=0; $i < $j; ++$i) {
f7b3ba37 979 switch( $string{$i} ) {
980 case '=':
b74ba498 981 $ret .= '=3D';
982 break;
451f74a2 983 case '?':
b74ba498 984 $ret .= '=3F';
985 break;
451f74a2 986 case '_':
b74ba498 987 $ret .= '=5F';
988 break;
451f74a2 989 case ' ':
b74ba498 990 $ret .= '_';
991 break;
451f74a2 992 default:
b74ba498 993 $k = ord( $string{$i} );
451f74a2 994 if ( $k > 126 ) {
b74ba498 995 $ret .= sprintf("=%02X", $k);
996 $l = TRUE;
997 } else
998 $ret .= $string{$i};
f7b3ba37 999 }
451f74a2 1000 }
793cc001 1001
451f74a2 1002 if ( $l ) {
f7b3ba37 1003 $string = "=?$default_charset?Q?$ret?=";
451f74a2 1004 }
346817d4 1005
451f74a2 1006 return( $string );
1007}
b74ba498 1008
451f74a2 1009/*
a3daaaf3 1010 Strips dangerous tags from html messages.
451f74a2 1011*/
1012function MagicHTML( $body, $id ) {
1013
793cc001 1014 global $message, $HTTP_SERVER_VARS,
5106a9be 1015 $attachment_common_show_images;
451f74a2 1016
5106a9be 1017 $attachment_common_show_images =
1018 FALSE; // Don't display attached images in HTML mode
451f74a2 1019 $j = strlen( $body ); // Legnth of the HTML
1020 $ret = ''; // Returned string
1021 $bgcolor = '#ffffff'; // Background style color (defaults to white)
1022 $textcolor = '#000000'; // Foreground style color (defaults to black)
1023 $leftmargin = ''; // Left margin style
1024 $title = ''; // HTML title if any
1025
1026 $i = 0;
1027 while ( $i < $j ) {
1028 if ( $body{$i} == '<' ) {
1029 $pos = $i + 1;
1030 $tag = '';
1031 while ($body{$pos} == ' ' || $body{$pos} == "\t" ||
793cc001 1032 $body{$pos} == "\n" ) {
451f74a2 1033 $pos ++;
1034 }
1035 while (strlen($tag) < 4 && $body{$pos} != ' ' &&
793cc001 1036 $body{$pos} != "\t" && $body{$pos} != "\n" &&
1037 $pos < $j ) {
451f74a2 1038 $tag .= $body{$pos};
1039 $pos ++;
1040 }
cedad33a 1041 /*
1042 A comment in HTML is only three characters and isn't
1043 guaranteed to have a space after it. This fudges so
1044 it will be caught by the switch statement.
1045 */
1046 if (ereg("!--", $tag)) {
1047 $tag = "!-- ";
1048 }
451f74a2 1049 switch( strtoupper( $tag ) ) {
1050 // Strips the entire tag and contents
1051 case 'APPL':
cedad33a 1052 case 'EMBE':
451f74a2 1053 case 'FRAM':
1054 case 'SCRI':
1055 case 'OBJE':
1056 $etg = '/' . $tag;
1057 while ( $body{$i+1}.$body{$i+2}.$body{$i+3}.$body{$i+4}.$body{$i+5} <> $etg &&
1058 $i < $j ) $i++;
1059 while ( $i < $j && $body{++$i} <> '>' );
1060 // $ret .= "<!-- $tag removed -->";
1061 break;
1062 // Substitute Title
1063 case 'TITL':
1064 $i += 5;
1065 while ( $body{$i} <> '>' && // </title>
1066 $i < $j )
a3daaaf3 1067 $i++;
451f74a2 1068 $i++;
1069 $title = '';
1070 while ( $body{$i} <> '<' && // </title>
1071 $i < $j ) {
1072 $title .= $body{$i};
1073 $i++;
1074 }
1075 $i += 7;
1076 break;
1077 // Destroy these tags
1078 case 'HTML':
1079 case 'HEAD':
1080 case '/HTM':
1081 case '/HEA':
1082 case '!DOC':
1083 case 'META':
89863d1d 1084 //case 'DIV ':
1085 //case '/DIV':
451f74a2 1086 case '!-- ':
1087 $i += 4;
1088 while ( $body{$i} <> '>' &&
1089 $i < $j )
1090 $i++;
1091 // $i++;
1092 break;
1093 case 'STYL':
1094 $i += 5;
1095 while ( $body{$i} <> '>' && // </title>
1096 $i < $j )
1097 $i++;
1098 $i++;
1099 // We parse the style to look for interesting stuff
1100 $styleblk = '';
1101 while ( $body{$i} <> '>' &&
1102 $i < $j ) {
1103 // First we get the name of the style
1104 $style = '';
1105 while ( $body{$i} <> '>' &&
1106 $body{$i} <> '<' &&
1107 $body{$i} <> '{' &&
1108 $i < $j ) {
1109 if ( isnoSep( $body{$i} ) )
1110 $style .= $body{$i};
1111 $i++;
1112 }
1113 stripComments( $i, $j, $body );
1114 $style = strtoupper( trim( $style ) );
1115 if ( $style == 'BODY' ) {
1116 // Next we look into the definitions of the body style
1117 while ( $body{$i} <> '>' &&
1118 $body{$i} <> '}' &&
a3daaaf3 1119 $i < $j ) {
451f74a2 1120 // We look for the background color if any.
1121 if ( substr( $body, $i, 17 ) == 'BACKGROUND-COLOR:' ) {
1122 $i += 17;
1123 $bgcolor = getStyleData( $i, $j, $body );
1124 } elseif ( substr( $body, $i, 12 ) == 'MARGIN-LEFT:' ) {
1125 $i += 12;
1126 $leftmargin = getStyleData( $i, $j, $body );
1127 }
a3daaaf3 1128 $i++;
1129 }
451f74a2 1130 } else {
1131 // Other style are mantained
1132 $styleblk .= "$style ";
1133 while ( $body{$i} <> '>' &&
1134 $body{$i} <> '<' &&
1135 $body{$i} <> '}' &&
1136 $i < $j ) {
1137 $styleblk .= $body{$i};
a3daaaf3 1138 $i++;
451f74a2 1139 }
1140 $styleblk .= $body{$i};
1141 }
1142 stripComments( $i, $j, $body );
1143 if ( $body{$i} <> '>' )
1144 $i++;
1145 }
1146 if ( $styleblk <> '' )
1147 $ret .= "<style>$styleblk";
1148 break;
1149 case 'BODY':
1150 if ( $title <> '' )
1151 $ret .= '<b>' . _("Title:") . " </b>$title<br>\n";
1152 $ret .= "<TABLE";
1153 $i += 5;
1154 if (! isset($base)) {
1155 $base = '';
1156 }
1157 $ret .= stripEvent( $i, $j, $body, $id, $base );
1158 $ret .= " bgcolor=$bgcolor width=\"100%\"><tr>";
1159 if ( $leftmargin <> '' )
1160 $ret .= "<td width=$leftmargin>&nbsp;</td>";
1161 $ret .= '<td>';
1162 if (strtolower($bgcolor) == 'ffffff' ||
1163 strtolower($bgcolor) == '#ffffff')
1164 $ret .= '<font color=#000000>';
1165 break;
1166 case 'BASE':
cedad33a 1167 $i += 4;
451f74a2 1168 $base = '';
cedad33a 1169 if ( strncasecmp($body{$i}, 'font', 4) ) {
1170 $i += 5;
1171 while ( !isNoSep( $body{$i} ) && $i < $j ) {
1172 $i++;
1173 }
1174 while ( $body{$i} <> '>' && $i < $j ) {
1175 $base .= $body{$i};
1176 $i++;
1177 }
1178 $ret .= "<BASEFONT $base>\n";
1179 break;
1180 }
1181 $i++;
451f74a2 1182 while ( !isNoSep( $body{$i} ) &&
1183 $i < $j ) {
1184 $i++;
1185 }
1186 if ( strcasecmp( substr( $base, 0, 4 ), 'href' ) ) {
a3daaaf3 1187 $i += 5;
451f74a2 1188 while ( !isNoSep( $body{$i} ) &&
1189 $i < $j ) {
a3daaaf3 1190 $i++;
451f74a2 1191 }
1192 while ( $body{$i} <> '>' &&
a3daaaf3 1193 $i < $j ) {
451f74a2 1194 if ( $body{$i} <> '"' ) {
1195 $base .= $body{$i};
a3daaaf3 1196 }
451f74a2 1197 $i++;
a3daaaf3 1198 }
451f74a2 1199 // Debuging $ret .= "<!-- base == $base -->";
1200 if ( strcasecmp( substr( $base, 0, 4 ), 'file' ) <> 0 ) {
1201 $ret .= "\n<BASE HREF=\"$base\">\n";
a3daaaf3 1202 }
a3daaaf3 1203 }
451f74a2 1204 break;
1205 case '/BOD':
1206 $ret .= '</font></td></tr></TABLE>';
1207 $i += 6;
a3daaaf3 1208 break;
1209 default:
451f74a2 1210 // Following tags can contain some event handler, lets search it
1211 stripComments( $i, $j, $body );
1212 if (! isset($base)) {
1213 $base = '';
1214 }
1215 $ret .= stripEvent( $i, $j, $body, $id, $base ) . '>';
1216 // $ret .= "<!-- $tag detected -->";
1217 }
1218 } else {
1219 $ret .= $body{$i};
a3daaaf3 1220 }
451f74a2 1221 $i++;
1222 }
a3daaaf3 1223
451f74a2 1224return( "\n\n<!-- HTML Output ahead -->\n" .
1225 $ret .
7e235a1a 1226 /* Base is illegal within HTML
451f74a2 1227 "\n<!-- END of HTML Output --><base href=\"".
494424e3 1228 get_location() . '/'.
451f74a2 1229 "\">\n\n" );
7e235a1a 1230 */
e5ea9327 1231 "\n<!-- END of HTML Output -->\n\n" );
451f74a2 1232}
a3daaaf3 1233
451f74a2 1234function isNoSep( $char ) {
1235
1236 switch( $char ) {
1237 case ' ':
1238 case "\n":
1239 case "\t":
1240 case "\r":
1241 case '>':
1242 case '"':
1243 return( FALSE );
1244 break;
1245 default:
1246 return( TRUE );
1247 }
a3daaaf3 1248
451f74a2 1249}
a3daaaf3 1250
451f74a2 1251/*
1252 The following function is usefull to remove extra data that can cause
1253 html not to display properly. Especialy with MS stuff.
1254*/
1255
1256function stripComments( &$i, $j, &$body ) {
1257
ae35570b 1258 while ( $body{$i}.$body{$i+1}.$body{$i+2}.$body{$i+3} == '<!--' &&
451f74a2 1259 $i < $j ) {
1260 $i += 5;
1261 while ( $body{$i-2}.$body{$i-1}.$body{$i} <> '-->' &&
1262 $i < $j )
a3daaaf3 1263 $i++;
451f74a2 1264 $i++;
1265 }
a3daaaf3 1266
451f74a2 1267 return;
a3daaaf3 1268
451f74a2 1269}
a3daaaf3 1270
451f74a2 1271/* Gets the style data of a specific style */
a3daaaf3 1272
451f74a2 1273function getStyleData( &$i, $j, &$body ) {
a3daaaf3 1274
451f74a2 1275 // We skip spaces
1276 while ( $body{$i} <> '>' && !isNoSep( $body{$i} ) &&
1277 $i < $j ) {
1278 $i++;
1279 }
1280 // And get the color
1281 $ret = '';
1282 while ( isNoSep( $body{$i} ) &&
1283 $i < $j ) {
1284 $ret .= $body{$i};
1285 $i++;
1286 }
a3daaaf3 1287
451f74a2 1288 return( $ret );
1289}
a3daaaf3 1290
451f74a2 1291/*
1292Private function for strip_dangerous_tag. Look for event based coded and "remove" it
1293change on with no (onload -> noload)
1294*/
a3daaaf3 1295
451f74a2 1296function stripEvent( &$i, $j, &$body, $id, $base ) {
a3daaaf3 1297
d03c24f4 1298 global $message, $base_uri, $has_unsafe_images, $view_unsafe_images;
a3daaaf3 1299
451f74a2 1300 $ret = '';
a3daaaf3 1301
451f74a2 1302 while ( $body{$i} <> '>' &&
1303 $i < $j ) {
1304 $etg = strtolower($body{$i}.$body{$i+1}.$body{$i+2});
1305 switch( $etg ) {
1306 case 'src':
1307 // This is probably a src specification
1308 $k = $i + 3;
1309 while( !isNoSep( $body{$k} )) {
1310 $k++;
1311 }
1312 if ( $body{$k} == '=' ) {
1313 /* It is indeed */
1314 $k++;
1315 while( !isNoSep( $body{$k} ) &&
1316 $k < $j ) {
1317 $k++;
1318 }
1319 $src = '';
1320 while ( $body{$k} <> '>' && isNoSep( $body{$k} ) &&
1321 $k < $j ) {
1322 $src .= $body{$k};
1323 $k++;
1324 }
f9cabaf8 1325 $k++;
451f74a2 1326 while( !isNoSep( $body{$k} ) &&
1327 $k < $j ) {
1328 $k++;
1329 }
f9cabaf8 1330 $k++;
451f74a2 1331 if ( strtolower( substr( $src, 0, 4 ) ) == 'cid:' ) {
1332 $src = substr( $src, 4 );
e5ea9327 1333 $src = "../src/download.php?absolute_dl=true&amp;passed_id=$id&amp;mailbox=" .
451f74a2 1334 urlencode( $message->header->mailbox ) .
7e235a1a 1335 "&amp;passed_ent_id=" . find_ent_id( $src, $message );
1336 } else if ( strtolower( substr( $src, 0, 4 ) ) <> 'http' ||
451f74a2 1337 stristr( $src, $base_uri ) ) {
1338 /* Javascript and local urls goes out */
7e235a1a 1339 if (!$view_unsafe_images) {
d03c24f4 1340 $src = '../images/' . _("sec_remove_eng.png");
7e235a1a 1341 }
1342 $has_unsafe_images = 1;
451f74a2 1343 }
1344 $ret .= 'src="' . $src . '" ';
89863d1d 1345 $i = $k - 2;
451f74a2 1346 } else {
1347 $ret .= 'src';
1348 $i = $i + 3;
1349 }
1350
1351 break;
1352 case '../':
1353 // Retrolinks are not allowed without a base because they mess with SM security
1354 if ( $base == '' ) {
a3daaaf3 1355 $i += 2;
451f74a2 1356 } else {
1357 $ret .= '.';
a3daaaf3 1358 }
451f74a2 1359 break;
1360 case 'cid':
1361 // Internal link
1362 $k = $i-1;
1363 if ( $body{$i+3} == ':') {
1364 $i +=4;
1365 $name = '';
1366 while ( isNoSep( $body{$i} ) &&
1367 $i < $j ) {
1368 $name .= $body{$i++};
1369 }
1370 if ( $name <> '' ) {
e5ea9327 1371 $ret .= "../src/download.php?absolute_dl=true&amp;passed_id=$id&amp;mailbox=" .
451f74a2 1372 urlencode( $message->header->mailbox ) .
e5ea9327 1373 "&amp;passed_ent_id=" . find_ent_id( $name, $message );
451f74a2 1374 if ( $body{$k} == '"' )
1375 $ret .= '" ';
1376 else
1377 $ret .= ' ';
1378 }
1379 if ( $body{$i} == '>' )
1380 $i -= 1;
1381 }
1382 break;
1383 case ' on':
1384 case "\non":
1385 case "\ron":
1386 case "\ton":
1387 $ret .= ' no';
1388 $i += 2;
1389 break;
1390 case 'pt:':
1391 if ( strcasecmp( $body{$i-4}.$body{$i-3}.$body{$i-2}.$body{$i-1}.$body{$i}.$body{$i+1}.$body{$i+2}, 'script:') == 0 ) {
1392 $ret .= '_no/';
1393 } else {
1394 $ret .= $etg;
1395 }
1396 $i += 2;
1397 break;
1398 default:
1399 $ret .= $body{$i};
a3daaaf3 1400 }
451f74a2 1401 $i++;
a3daaaf3 1402 }
451f74a2 1403 return( $ret );
1404}
a3daaaf3 1405
1406
451f74a2 1407/* This function trys to locate the entity_id of a specific mime element */
a3daaaf3 1408
451f74a2 1409function find_ent_id( $id, $message ) {
a3daaaf3 1410
451f74a2 1411 $ret = '';
1412 for ($i=0; $ret == '' && $i < count($message->entities); $i++) {
a3daaaf3 1413
451f74a2 1414 if ( $message->entities[$i]->header->entity_id == '' ) {
1415 $ret = find_ent_id( $id, $message->entities[$i] );
1416 } else {
1417 if ( strcasecmp( $message->entities[$i]->header->id, $id ) == 0 )
1418 $ret = $message->entities[$i]->header->entity_id;
a3daaaf3 1419 }
1420
a3daaaf3 1421 }
451f74a2 1422
1423 return( $ret );
1424
1425}
1c72b151 1426?>