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1 | <?php |
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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 | */ |
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14 | |
35586184 |
15 | require_once('../functions/imap.php'); |
16 | require_once('../functions/attachment_common.php'); |
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17 | |
35586184 |
18 | /** Setting up the objects that have the structure for the message **/ |
19 | class msg_header { |
20 | /** msg_header contains generic variables for values that **/ |
21 | /** could be in a header. **/ |
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22 | |
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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 | } |
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29 | |
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30 | class 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 | **/ |
36 | var $header = ''; |
37 | var $entities = array(); |
38 | |
39 | function addEntity ($msg) { |
40 | $this->entities[] = $msg; |
41 | } |
42 | } |
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43 | |
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44 | /* --------------------------------------------------------------------------------- */ |
45 | /* MIME DECODING */ |
46 | /* --------------------------------------------------------------------------------- */ |
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47 | |
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48 | /* This function gets the structure of a message and stores it in the "message" class. |
49 | * It will return this object for use with all relevant header information and |
50 | * fully parsed into the standard "message" object format. |
51 | */ |
52 | function mime_structure ($imap_stream, $header) { |
53 | |
54 | sqimap_messages_flag ($imap_stream, $header->id, $header->id, 'Seen'); |
55 | $ssid = sqimap_session_id(); |
56 | $lsid = strlen( $ssid ); |
57 | $id = $header->id; |
58 | fputs ($imap_stream, "$ssid FETCH $id BODYSTRUCTURE\r\n"); |
59 | // |
60 | // This should use sqimap_read_data instead of reading it itself |
61 | // |
62 | $read = fgets ($imap_stream, 10000); |
63 | $bodystructure = ''; |
64 | while ( substr($read, 0, $lsid) <> $ssid && |
65 | !feof( $imap_stream ) ) { |
66 | $bodystructure .= $read; |
67 | $read = fgets ($imap_stream, 10000); |
68 | } |
69 | $read = $bodystructure; |
70 | |
71 | // isolate the body structure and remove beginning and end parenthesis |
72 | $read = trim(substr ($read, strpos(strtolower($read), 'bodystructure') + 13)); |
73 | $read = trim(substr ($read, 0, -1)); |
74 | $end = mime_match_parenthesis(0, $read); |
75 | while ($end == strlen($read)-1) { |
76 | $read = trim(substr ($read, 0, -1)); |
77 | $read = trim(substr ($read, 1)); |
78 | $end = mime_match_parenthesis(0, $read); |
79 | } |
80 | |
81 | $msg = mime_parse_structure ($read, 0); |
82 | $msg->header = $header; |
83 | |
84 | return( $msg ); |
85 | } |
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86 | |
451f74a2 |
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 | * $message. |
90 | * First, it checks to see if it is a multipart message. If it is, then it |
91 | * handles that as it sees is necessary. If it is just a regular entity, |
92 | * then it parses it and adds the necessary header information (by calling out |
93 | * to mime_get_elements() |
94 | */ |
95 | function mime_parse_structure ($structure, $ent_id) { |
96 | |
97 | $msg = new message(); |
98 | if ($structure{0} == '(') { |
99 | $ent_id = mime_new_element_level($ent_id); |
100 | $start = $end = -1; |
101 | do { |
102 | $start = $end+1; |
103 | $end = mime_match_parenthesis ($start, $structure); |
104 | |
105 | $element = substr($structure, $start+1, ($end - $start)-1); |
106 | $ent_id = mime_increment_id ($ent_id); |
107 | $newmsg = mime_parse_structure ($element, $ent_id); |
108 | $msg->addEntity ($newmsg); |
109 | } while ($structure{$end+1} == '('); |
110 | } else { |
111 | // parse the elements |
112 | $msg = mime_get_element ($structure, $msg, $ent_id); |
113 | } |
114 | return $msg; |
115 | } |
e4a256af |
116 | |
451f74a2 |
117 | /* Increments the element ID. An element id can look like any of |
118 | * the following: 1, 1.2, 4.3.2.4.1, etc. This function increments |
119 | * the last number of the element id, changing 1.2 to 1.3. |
120 | */ |
121 | function mime_increment_id ($id) { |
122 | |
123 | if (strpos($id, ".")) { |
124 | $first = substr($id, 0, strrpos($id, ".")); |
125 | $last = substr($id, strrpos($id, ".")+1); |
126 | $last++; |
127 | $new = $first . "." .$last; |
128 | } else { |
129 | $new = $id + 1; |
130 | } |
131 | |
132 | return $new; |
133 | } |
134 | |
135 | /* |
136 | * See comment for mime_increment_id(). |
137 | * This adds another level on to the entity_id changing 1.3 to 1.3.0 |
138 | * NOTE: 1.3.0 is not a valid element ID. It MUST be incremented |
139 | * before it can be used. I left it this way so as not to have |
140 | * to make a special case if it is the first entity_id. It |
141 | * always increments it, and that works fine. |
142 | */ |
143 | function mime_new_element_level ($id) { |
144 | |
145 | if (!$id) { |
146 | $id = 0; |
147 | } else { |
148 | $id = $id . '.0'; |
149 | } |
150 | |
151 | return( $id ); |
152 | } |
153 | |
154 | function mime_get_element (&$structure, $msg, $ent_id) { |
155 | |
156 | $elem_num = 1; |
157 | $msg->header = new msg_header(); |
158 | $msg->header->entity_id = $ent_id; |
159 | $properties = array(); |
160 | |
161 | while (strlen($structure) > 0) { |
162 | $structure = trim($structure); |
163 | $char = $structure{0}; |
164 | |
165 | if (strtolower(substr($structure, 0, 3)) == 'nil') { |
166 | $text = ''; |
167 | $structure = substr($structure, 3); |
168 | } else if ($char == '"') { |
169 | // loop through until we find the matching quote, and return that as a string |
170 | $pos = 1; |
171 | $text = ''; |
172 | while ( ($char = $structure{$pos} ) <> '"' && $pos < strlen($structure)) { |
173 | $text .= $char; |
174 | $pos++; |
175 | } |
176 | $structure = substr($structure, strlen($text) + 2); |
177 | } else if ($char == '(') { |
178 | // comment me |
179 | $end = mime_match_parenthesis (0, $structure); |
180 | $sub = substr($structure, 1, $end-1); |
181 | $properties = mime_get_props($properties, $sub); |
182 | $structure = substr($structure, strlen($sub) + 2); |
183 | } else { |
184 | // loop through until we find a space or an end parenthesis |
185 | $pos = 0; |
186 | $char = $structure{$pos}; |
187 | $text = ''; |
188 | while ($char != ' ' && $char != ')' && $pos < strlen($structure)) { |
189 | $text .= $char; |
190 | $pos++; |
191 | $char = $structure{$pos}; |
192 | } |
193 | $structure = substr($structure, strlen($text)); |
194 | } |
195 | |
196 | // This is where all the text parts get put into the header |
197 | switch ($elem_num) { |
198 | case 1: |
199 | $msg->header->type0 = strtolower($text); |
200 | break; |
201 | case 2: |
202 | $msg->header->type1 = strtolower($text); |
203 | break; |
204 | case 4: // Id |
205 | // Invisimail enclose images with <> |
206 | $msg->header->id = str_replace( '<', '', str_replace( '>', '', $text ) ); |
207 | break; |
208 | case 5: |
209 | $msg->header->description = $text; |
210 | break; |
211 | case 6: |
212 | $msg->header->encoding = strtolower($text); |
213 | break; |
214 | case 7: |
215 | $msg->header->size = $text; |
216 | break; |
217 | default: |
218 | if ($msg->header->type0 == 'text' && $elem_num == 8) { |
219 | // This is a plain text message, so lets get the number of lines |
220 | // that it contains. |
221 | $msg->header->num_lines = $text; |
222 | |
223 | } else if ($msg->header->type0 == 'message' && $msg->header->type1 == 'rfc822' && $elem_num == 8) { |
224 | // This is an encapsulated message, so lets start all over again and |
225 | // parse this message adding it on to the existing one. |
226 | $structure = trim($structure); |
227 | if ( $structure{0} == '(' ) { |
228 | $e = mime_match_parenthesis (0, $structure); |
229 | $structure = substr($structure, 0, $e); |
230 | $structure = substr($structure, 1); |
231 | $m = mime_parse_structure($structure, $msg->header->entity_id); |
232 | |
233 | // the following conditional is there to correct a bug that wasn't |
234 | // incrementing the entity IDs correctly because of the special case |
235 | // that message/rfc822 is. This fixes it fine. |
236 | if (substr($structure, 1, 1) != '(') |
237 | $m->header->entity_id = mime_increment_id(mime_new_element_level($ent_id)); |
238 | |
239 | // Now we'll go through and reformat the results. |
240 | if ($m->entities) { |
241 | for ($i=0; $i < count($m->entities); $i++) { |
242 | $msg->addEntity($m->entities[$i]); |
243 | } |
244 | } else { |
245 | $msg->addEntity($m); |
246 | } |
247 | $structure = ""; |
248 | } |
249 | } |
250 | break; |
251 | } |
252 | $elem_num++; |
253 | $text = ""; |
254 | } |
255 | // loop through the additional properties and put those in the various headers |
256 | if ($msg->header->type0 != 'message') { |
257 | for ($i=0; $i < count($properties); $i++) { |
258 | $msg->header->{$properties[$i]['name']} = $properties[$i]['value']; |
259 | } |
260 | } |
261 | |
262 | return $msg; |
263 | } |
264 | |
265 | /* |
266 | * I did most of the MIME stuff yesterday (June 20, 2000), but I couldn't |
267 | * figure out how to do this part, so I decided to go to bed. I woke up |
268 | * in the morning and had a flash of insight. I went to the white-board |
269 | * and scribbled it out, then spent a bit programming it, and this is the |
270 | * result. Nothing complicated, but I think my brain was fried yesterday. |
271 | * Funny how that happens some times. |
272 | * |
273 | * This gets properties in a nested parenthesisized list. For example, |
274 | * this would get passed something like: ("attachment" ("filename" "luke.tar.gz")) |
275 | * This returns an array called $props with all paired up properties. |
276 | * It ignores the "attachment" for now, maybe that should change later |
277 | * down the road. In this case, what is returned is: |
278 | * $props[0]["name"] = "filename"; |
279 | * $props[0]["value"] = "luke.tar.gz"; |
280 | */ |
281 | function mime_get_props ($props, $structure) { |
282 | |
283 | while (strlen($structure) > 0) { |
284 | $structure = trim($structure); |
285 | $char = $structure{0}; |
286 | |
287 | if ($char == '"') { |
288 | $pos = 1; |
289 | $tmp = ''; |
290 | while ( ( $char = $structure{$pos} ) != '"' && |
291 | $pos < strlen($structure)) { |
292 | $tmp .= $char; |
293 | $pos++; |
294 | } |
295 | $structure = trim(substr($structure, strlen($tmp) + 2)); |
296 | $char = $structure{0}; |
297 | |
298 | if ($char == '"') { |
299 | $pos = 1; |
300 | $value = ''; |
301 | while ( ( $char = $structure{$pos} ) != '"' && |
302 | $pos < strlen($structure) ) { |
303 | $value .= $char; |
304 | $pos++; |
305 | } |
306 | $structure = trim(substr($structure, strlen($tmp) + 2)); |
307 | |
308 | $k = count($props); |
309 | $props[$k]['name'] = strtolower($tmp); |
310 | $props[$k]['value'] = $value; |
311 | } else if ($char == '(') { |
312 | $end = mime_match_parenthesis (0, $structure); |
313 | $sub = substr($structure, 1, $end-1); |
314 | if (! isset($props)) |
315 | $props = array(); |
316 | $props = mime_get_props($props, $sub); |
317 | $structure = substr($structure, strlen($sub) + 2); |
318 | } |
319 | return $props; |
320 | } else if ($char == '(') { |
321 | $end = mime_match_parenthesis (0, $structure); |
322 | $sub = substr($structure, 1, $end-1); |
323 | $props = mime_get_props($props, $sub); |
324 | $structure = substr($structure, strlen($sub) + 2); |
325 | return $props; |
326 | } else { |
327 | return $props; |
328 | } |
329 | } |
330 | } |
331 | |
332 | /* |
333 | * Matches parenthesis. It will return the position of the matching |
334 | * parenthesis in $structure. For instance, if $structure was: |
335 | * ("text" "plain" ("val1name", "1") nil ... ) |
336 | * x x |
337 | * then this would return 42 to match up those two. |
338 | */ |
339 | function mime_match_parenthesis ($pos, $structure) { |
340 | |
341 | $j = strlen( $structure ); |
342 | |
343 | // ignore all extra characters |
344 | // If inside of a string, skip string -- Boundary IDs and other |
345 | // things can have ) in them. |
346 | if ( $structure{$pos} != '(' ) { |
347 | return( $j ); |
348 | } |
349 | |
350 | while ( $pos < $j ) { |
351 | $pos++; |
352 | if ($structure{$pos} == ')') { |
8beafbbc |
353 | return $pos; |
451f74a2 |
354 | } elseif ($structure{$pos} == '"') { |
b74ba498 |
355 | $pos++; |
451f74a2 |
356 | while ( $structure{$pos} != '"' && |
357 | $pos < $j ) { |
358 | if (substr($structure, $pos, 2) == '\\"') { |
b74ba498 |
359 | $pos++; |
451f74a2 |
360 | } elseif (substr($structure, $pos, 2) == '\\\\') { |
b74ba498 |
361 | $pos++; |
451f74a2 |
362 | } |
b74ba498 |
363 | $pos++; |
5ffe5a7e |
364 | } |
451f74a2 |
365 | } elseif ( $structure{$pos} == '(' ) { |
8beafbbc |
366 | $pos = mime_match_parenthesis ($pos, $structure); |
451f74a2 |
367 | } |
368 | } |
369 | echo _("Error decoding mime structure. Report this as a bug!") . '<br>'; |
370 | return( $pos ); |
371 | } |
372 | |
346817d4 |
373 | function mime_fetch_body($imap_stream, $id, $ent_id ) { |
09a4bde3 |
374 | |
375 | /* |
376 | * do a bit of error correction. If we couldn't find the entity id, just guess |
377 | * that it is the first one. That is usually the case anyway. |
378 | */ |
379 | if (!$ent_id) { |
451f74a2 |
380 | $ent_id = 1; |
09a4bde3 |
381 | } |
346817d4 |
382 | |
383 | $cmd = "FETCH $id BODY[$ent_id]"; |
384 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message); |
451f74a2 |
385 | $topline = array_shift($data); |
09a4bde3 |
386 | while (! ereg('\\* [0-9]+ FETCH ', $topline) && $data) { |
a3daaaf3 |
387 | $topline = array_shift($data); |
09a4bde3 |
388 | } |
451f74a2 |
389 | $wholemessage = implode('', $data); |
390 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
391 | $ret = substr( $wholemessage, 0, $regs[1] ); |
392 | /* |
393 | There is some information in the content info header that could be important |
394 | in order to parse html messages. Let's get them here. |
395 | */ |
396 | if ( $ret{0} == '<' ) { |
1c72b151 |
397 | $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message); |
451f74a2 |
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++; |
a3daaaf3 |
412 | } |
451f74a2 |
413 | $k = 0; |
414 | } elseif ( $k == 1 && !isnosep( $d{0} ) ) { |
415 | $base .= substr( $d, 1 ); |
a3daaaf3 |
416 | } |
451f74a2 |
417 | $k++; |
a3daaaf3 |
418 | } |
346817d4 |
419 | if ( $base <> '' ) { |
451f74a2 |
420 | $ret = "<base href=\"$base\">" . $ret; |
346817d4 |
421 | } |
451f74a2 |
422 | } |
423 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
424 | $ret = $regs[1]; |
425 | } else { |
426 | global $where, $what, $mailbox, $passed_id, $startMessage; |
346817d4 |
427 | $par = 'mailbox=' . urlencode($mailbox) . "&passed_id=$passed_id"; |
451f74a2 |
428 | if (isset($where) && isset($what)) { |
346817d4 |
429 | $par .= '&where='. urlencode($where) . "&what=" . urlencode($what); |
a3daaaf3 |
430 | } else { |
451f74a2 |
431 | $par .= "&startMessage=$startMessage&show_more=0"; |
432 | } |
346817d4 |
433 | $par .= '&response=' . urlencode($response) . |
434 | '&message=' . urlencode($message). |
435 | '&topline=' . urlencode($topline); |
a019eeb8 |
436 | |
346817d4 |
437 | echo '<tt><br>' . |
438 | '<table width="80%"><tr>' . |
439 | '<tr><td colspan=2>' . |
451f74a2 |
440 | _("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 |
441 | " <A HREF=\"../src/retrievalerror.php?$par\"><br>" . |
442 | _("Submit message") . '</A><BR> ' . |
443 | '</td></tr>' . |
444 | '<td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
445 | '<td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
446 | '<td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
447 | '<td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
448 | "</table><BR></tt></font><hr>"; |
449 | |
1c72b151 |
450 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message); |
451f74a2 |
451 | array_shift($data); |
452 | $wholemessage = implode('', $data); |
a019eeb8 |
453 | |
346817d4 |
454 | $ret = $wholemessage; |
a3daaaf3 |
455 | } |
451f74a2 |
456 | return( $ret ); |
457 | } |
d4467150 |
458 | |
451f74a2 |
459 | function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) { |
460 | // do a bit of error correction. If we couldn't find the entity id, just guess |
461 | // that it is the first one. That is usually the case anyway. |
462 | if (!$ent_id) { |
463 | $ent_id = 1; |
464 | } |
465 | $sid = sqimap_session_id(); |
466 | // Don't kill the connection if the browser is over a dialup |
467 | // and it would take over 30 seconds to download it. |
b7206e1d |
468 | |
469 | // don´t call set_time_limit in safe mode. |
470 | if (!ini_get("safe_mode")) { |
471 | set_time_limit(0); |
472 | } |
346817d4 |
473 | |
451f74a2 |
474 | fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n"); |
475 | $cnt = 0; |
476 | $continue = true; |
477 | $read = fgets ($imap_stream,4096); |
478 | // This could be bad -- if the section has sqimap_session_id() . ' OK' |
479 | // or similar, it will kill the download. |
480 | while (!ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
481 | if (trim($read) == ')==') { |
482 | $read1 = $read; |
b74ba498 |
483 | $read = fgets ($imap_stream,4096); |
451f74a2 |
484 | if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
485 | return; |
486 | } else { |
487 | echo decodeBody($read1, $encoding) . |
488 | decodeBody($read, $encoding); |
489 | } |
490 | } else if ($cnt) { |
491 | echo decodeBody($read, $encoding); |
b74ba498 |
492 | } |
451f74a2 |
493 | $read = fgets ($imap_stream,4096); |
494 | $cnt++; |
495 | } |
496 | } |
beb9e459 |
497 | |
451f74a2 |
498 | /* -[ END MIME DECODING ]----------------------------------------------------------- */ |
d4467150 |
499 | |
aceb0d5c |
500 | |
d4467150 |
501 | |
451f74a2 |
502 | /* This is the first function called. It decides if this is a multipart |
503 | message or if it should be handled as a single entity |
504 | */ |
505 | function decodeMime ($imap_stream, &$header) { |
506 | global $username, $key, $imapServerAddress, $imapPort; |
507 | return mime_structure ($imap_stream, $header); |
508 | } |
ea48eb25 |
509 | |
451f74a2 |
510 | // This is here for debugging purposese. It will print out a list |
511 | // of all the entity IDs that are in the $message object. |
512 | /* |
513 | function listEntities ($message) { |
514 | if ($message) { |
515 | if ($message->header->entity_id) |
516 | echo "<tt>" . $message->header->entity_id . ' : ' . $message->header->type0 . '/' . $message->header->type1 . '<br>'; |
517 | for ($i = 0; $message->entities[$i]; $i++) { |
518 | $msg = listEntities($message->entities[$i], $ent_id); |
519 | if ($msg) |
520 | return $msg; |
521 | } |
522 | } |
523 | } |
524 | */ |
525 | |
526 | /* returns a $message object for a particular entity id */ |
527 | function getEntity ($message, $ent_id) { |
528 | if ($message) { |
529 | if ($message->header->entity_id == $ent_id && strlen($ent_id) == strlen($message->header->entity_id)) { |
8beafbbc |
530 | return $message; |
451f74a2 |
531 | } else { |
cd928157 |
532 | for ($i = 0; isset($message->entities[$i]); $i++) { |
451f74a2 |
533 | $msg = getEntity ($message->entities[$i], $ent_id); |
534 | if ($msg) { |
535 | return $msg; |
536 | } |
b1dadc61 |
537 | } |
451f74a2 |
538 | } |
539 | } |
540 | } |
8beafbbc |
541 | |
451f74a2 |
542 | /* |
543 | * figures out what entity to display and returns the $message object |
544 | * for that entity. |
545 | */ |
546 | function findDisplayEntity ($message, $textOnly = 1) { |
547 | global $show_html_default; |
548 | |
549 | $entity = 0; |
550 | |
551 | if ($message) { |
552 | if ( $message->header->type0 == 'multipart' && |
553 | ( $message->header->type1 == 'alternative' || |
554 | $message->header->type1 == 'related' ) && |
555 | $show_html_default && ! $textOnly ) { |
556 | $entity = findDisplayEntityHTML($message); |
557 | } |
558 | |
559 | // Show text/plain or text/html -- the first one we find. |
560 | if ( $entity == 0 && |
561 | $message->header->type0 == 'text' && |
562 | ( $message->header->type1 == 'plain' || |
563 | $message->header->type1 == 'html' ) && |
564 | isset($message->header->entity_id) ) { |
565 | $entity = $message->header->entity_id; |
566 | } |
567 | |
568 | $i = 0; |
569 | while ($entity == 0 && isset($message->entities[$i]) ) { |
570 | $entity = findDisplayEntity($message->entities[$i], $textOnly); |
571 | $i++; |
a3daaaf3 |
572 | } |
a3daaaf3 |
573 | } |
451f74a2 |
574 | |
575 | return( $entity ); |
576 | } |
b74ba498 |
577 | |
451f74a2 |
578 | /* Shows the HTML version */ |
579 | function findDisplayEntityHTML ($message) { |
8405ee35 |
580 | |
451f74a2 |
581 | if ( $message->header->type0 == 'text' && |
582 | $message->header->type1 == 'html' && |
583 | isset($message->header->entity_id)) { |
584 | return $message->header->entity_id; |
585 | } |
586 | for ($i = 0; isset($message->entities[$i]); $i ++) { |
587 | $entity = findDisplayEntityHTML($message->entities[$i]); |
588 | if ($entity != 0) { |
589 | return $entity; |
590 | } |
591 | } |
592 | |
593 | return 0; |
594 | } |
595 | |
596 | /* This returns a parsed string called $body. That string can then |
597 | be displayed as the actual message in the HTML. It contains |
598 | everything needed, including HTML Tags, Attachments at the |
599 | bottom, etc. |
600 | */ |
601 | function formatBody($imap_stream, $message, $color, $wrap_at) { |
602 | // this if statement checks for the entity to show as the |
603 | // primary message. To add more of them, just put them in the |
604 | // order that is their priority. |
605 | global $startMessage, $username, $key, $imapServerAddress, $imapPort, |
606 | $show_html_default; |
607 | |
608 | $id = $message->header->id; |
609 | $urlmailbox = urlencode($message->header->mailbox); |
610 | |
611 | // Get the right entity and redefine message to be this entity |
612 | // Pass the 0 to mean that we want the 'best' viewable one |
613 | $ent_num = findDisplayEntity ($message, 0); |
614 | $body_message = getEntity($message, $ent_num); |
615 | if (($body_message->header->type0 == 'text') || |
616 | ($body_message->header->type0 == 'rfc822')) { |
617 | |
618 | $body = mime_fetch_body ($imap_stream, $id, $ent_num); |
619 | $body = decodeBody($body, $body_message->header->encoding); |
620 | $hookResults = do_hook("message_body", $body); |
621 | $body = $hookResults[1]; |
622 | |
623 | // If there are other types that shouldn't be formatted, add |
624 | // them here |
625 | if ($body_message->header->type1 == 'html') { |
626 | if ( $show_html_default <> 1 ) { |
a3daaaf3 |
627 | $body = strip_tags( $body ); |
628 | translateText($body, $wrap_at, $body_message->header->charset); |
629 | } else { |
630 | $body = MagicHTML( $body, $id ); |
631 | } |
451f74a2 |
632 | } else { |
9eea179c |
633 | translateText($body, $wrap_at, $body_message->header->charset); |
451f74a2 |
634 | } |
635 | |
636 | $body .= "<SMALL><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$ent_num&mailbox=$urlmailbox&showHeaders=1\">". _("Download this as a file") ."</A></CENTER><BR></SMALL>"; |
637 | |
638 | /** Display the ATTACHMENTS: message if there's more than one part **/ |
639 | $body .= "</TD></TR></TABLE>"; |
640 | if (isset($message->entities[0])) { |
641 | $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id); |
642 | } |
643 | $body .= "</TD></TR></TABLE>"; |
644 | } else { |
645 | $body = formatAttachments ($message, -1, $message->header->mailbox, $id); |
646 | } |
647 | return ($body); |
648 | } |
b74ba498 |
649 | |
451f74a2 |
650 | /* |
651 | * A recursive function that returns a list of attachments with links |
652 | * to where to download these attachments |
653 | */ |
654 | function formatAttachments ($message, $ent_id, $mailbox, $id) { |
655 | global $where, $what; |
656 | global $startMessage, $color; |
657 | static $ShownHTML = 0; |
658 | |
659 | $body = ""; |
660 | if ($ShownHTML == 0) { |
661 | $ShownHTML = 1; |
662 | |
663 | $body .= "<TABLE WIDTH=\"100%\" CELLSPACING=0 CELLPADDING=2 BORDER=0 BGCOLOR=\"$color[0]\"><TR>\n" . |
664 | "<TH ALIGN=\"left\" BGCOLOR=\"$color[9]\"><B>\n" . |
665 | _("Attachments") . ':' . |
666 | "</B></TH></TR><TR><TD>\n" . |
667 | "<TABLE CELLSPACING=0 CELLPADDING=1 BORDER=0>\n" . |
668 | formatAttachments ($message, $ent_id, $mailbox, $id) . |
669 | "</TABLE></TD></TR></TABLE>"; |
670 | |
671 | return( $body ); |
672 | } |
673 | |
674 | if ($message) { |
675 | if (!$message->entities) { |
676 | $type0 = strtolower($message->header->type0); |
677 | $type1 = strtolower($message->header->type1); |
678 | $name = decodeHeader($message->header->name); |
679 | |
680 | if ($message->header->entity_id != $ent_id) { |
681 | $filename = decodeHeader($message->header->filename); |
682 | if (trim($filename) == '') { |
683 | if (trim($name) == '') { |
684 | if ( trim( $message->header->id ) == '' ) |
685 | $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
686 | else |
687 | $display_filename = 'cid: ' . $message->header->id; |
688 | // $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
689 | } else { |
690 | $display_filename = $name; |
691 | $filename = $name; |
692 | } |
693 | } else { |
694 | $display_filename = $filename; |
695 | } |
696 | |
697 | $urlMailbox = urlencode($mailbox); |
698 | $ent = urlencode($message->header->entity_id); |
699 | |
700 | $DefaultLink = |
701 | "../src/download.php?startMessage=$startMessage&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
702 | if ($where && $what) |
703 | $DefaultLink .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
704 | $Links['download link']['text'] = _("download"); |
705 | $Links['download link']['href'] = |
706 | "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
707 | $ImageURL = ''; |
708 | |
8196f771 |
709 | /* this executes the attachment hook with a specific MIME-type. |
710 | * if that doens't have results, it tries if there's a rule |
711 | * for a more generic type. */ |
451f74a2 |
712 | $HookResults = do_hook("attachment $type0/$type1", $Links, |
713 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, |
714 | $display_filename, $where, $what); |
ae2f65a9 |
715 | if(count($HookResults[1]) <= 1) { |
716 | $HookResults = do_hook("attachment $type0/*", $Links, |
717 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, |
718 | $display_filename, $where, $what); |
719 | } |
451f74a2 |
720 | |
721 | $Links = $HookResults[1]; |
722 | $DefaultLink = $HookResults[6]; |
723 | |
724 | $body .= '<TR><TD> </TD><TD>' . |
725 | "<A HREF=\"$DefaultLink\">$display_filename</A> </TD>" . |
726 | '<TD><SMALL><b>' . show_readable_size($message->header->size) . |
727 | '</b> </small></TD>' . |
728 | "<TD><SMALL>[ $type0/$type1 ] </SMALL></TD>" . |
729 | '<TD><SMALL>'; |
730 | if ($message->header->description) |
731 | $body .= '<b>' . htmlspecialchars($message->header->description) . '</b>'; |
732 | $body .= '</SMALL></TD><TD><SMALL> '; |
733 | |
734 | |
735 | $SkipSpaces = 1; |
736 | foreach ($Links as $Val) { |
737 | if ($SkipSpaces) { |
738 | $SkipSpaces = 0; |
739 | } else { |
740 | $body .= ' | '; |
741 | } |
742 | $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>'; |
743 | } |
b74ba498 |
744 | |
451f74a2 |
745 | unset($Links); |
b74ba498 |
746 | |
451f74a2 |
747 | $body .= "</SMALL></TD></TR>\n"; |
748 | } |
749 | } else { |
750 | for ($i = 0; $i < count($message->entities); $i++) { |
751 | $body .= formatAttachments ($message->entities[$i], $ent_id, $mailbox, $id); |
752 | } |
753 | } |
754 | return( $body ); |
755 | } |
756 | } |
b74ba498 |
757 | |
b74ba498 |
758 | |
451f74a2 |
759 | /** this function decodes the body depending on the encoding type. **/ |
760 | function decodeBody($body, $encoding) { |
761 | $body = str_replace("\r\n", "\n", $body); |
762 | $encoding = strtolower($encoding); |
b74ba498 |
763 | |
451f74a2 |
764 | global $show_html_default; |
4809f489 |
765 | |
451f74a2 |
766 | if ($encoding == 'quoted-printable') { |
767 | $body = quoted_printable_decode($body); |
4809f489 |
768 | |
7831268e |
769 | |
451f74a2 |
770 | while (ereg("=\n", $body)) |
771 | $body = ereg_replace ("=\n", "", $body); |
358f007e |
772 | |
451f74a2 |
773 | } else if ($encoding == 'base64') { |
774 | $body = base64_decode($body); |
775 | } |
b74ba498 |
776 | |
451f74a2 |
777 | // All other encodings are returned raw. |
778 | return $body; |
779 | } |
780 | |
781 | /* |
782 | * This functions decode strings that is encoded according to |
783 | * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). |
784 | */ |
785 | function decodeHeader ($string, $utfencode=true) { |
18aa168e |
786 | |
787 | if ( is_array( $string ) ) { |
788 | $string = implode("\n", $string ); |
789 | } |
790 | |
791 | if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', |
451f74a2 |
792 | $string, $res)) { |
18aa168e |
793 | if (ucfirst($res[2]) == 'B') { |
451f74a2 |
794 | $replace = base64_decode($res[3]); |
18aa168e |
795 | } else { |
0f8a1ce9 |
796 | $replace = str_replace('_', ' ', $res[3]); |
18aa168e |
797 | // Convert lowercase Quoted Printable to uppercase for |
798 | // quoted_printable_decode to understand it. |
799 | while (ereg("(=(([0-9][abcdef])|([abcdef][0-9])|([abcdef][abcdef])))", |
800 | $replace, $res)) { |
801 | $replace = str_replace($res[1], strtoupper($res[1]), $replace); |
802 | } |
451f74a2 |
803 | $replace = quoted_printable_decode($replace); |
18aa168e |
804 | } |
805 | /* Only encode into entities by default. Some places |
451f74a2 |
806 | don't need the encoding, like the compose form. */ |
18aa168e |
807 | if ($utfencode){ |
808 | $replace = charset_decode ($res[1], $replace); |
809 | } |
810 | |
811 | // Remove the name of the character set. |
812 | $string = eregi_replace ('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', |
813 | $replace, $string); |
451f74a2 |
814 | |
18aa168e |
815 | // In case there should be more encoding in the string: recurse |
816 | $string = decodeHeader($string); |
817 | } |
451f74a2 |
818 | |
18aa168e |
819 | return ($string); |
451f74a2 |
820 | } |
821 | |
822 | /* |
823 | * Encode a string according to RFC 1522 for use in headers if it |
824 | * contains 8-bit characters or anything that looks like it should |
825 | * be encoded. |
826 | */ |
827 | function encodeHeader ($string) { |
828 | global $default_charset; |
829 | |
830 | // Encode only if the string contains 8-bit characters or =? |
831 | $j = strlen( $string ); |
832 | $l = strstr($string, '=?'); // Must be encoded ? |
833 | $ret = ''; |
834 | for( $i=0; $i < $j; ++$i) { |
f7b3ba37 |
835 | switch( $string{$i} ) { |
836 | case '=': |
b74ba498 |
837 | $ret .= '=3D'; |
838 | break; |
451f74a2 |
839 | case '?': |
b74ba498 |
840 | $ret .= '=3F'; |
841 | break; |
451f74a2 |
842 | case '_': |
b74ba498 |
843 | $ret .= '=5F'; |
844 | break; |
451f74a2 |
845 | case ' ': |
b74ba498 |
846 | $ret .= '_'; |
847 | break; |
451f74a2 |
848 | default: |
b74ba498 |
849 | $k = ord( $string{$i} ); |
451f74a2 |
850 | if ( $k > 126 ) { |
b74ba498 |
851 | $ret .= sprintf("=%02X", $k); |
852 | $l = TRUE; |
853 | } else |
854 | $ret .= $string{$i}; |
f7b3ba37 |
855 | } |
451f74a2 |
856 | } |
857 | |
858 | if ( $l ) { |
f7b3ba37 |
859 | $string = "=?$default_charset?Q?$ret?="; |
451f74a2 |
860 | } |
346817d4 |
861 | |
451f74a2 |
862 | return( $string ); |
863 | } |
b74ba498 |
864 | |
451f74a2 |
865 | /* |
a3daaaf3 |
866 | Strips dangerous tags from html messages. |
451f74a2 |
867 | */ |
868 | function MagicHTML( $body, $id ) { |
869 | |
43fdb2a4 |
870 | global $message, $HTTP_SERVER_VARS, |
5106a9be |
871 | $attachment_common_show_images; |
451f74a2 |
872 | |
5106a9be |
873 | $attachment_common_show_images = |
874 | FALSE; // Don't display attached images in HTML mode |
451f74a2 |
875 | $j = strlen( $body ); // Legnth of the HTML |
876 | $ret = ''; // Returned string |
877 | $bgcolor = '#ffffff'; // Background style color (defaults to white) |
878 | $textcolor = '#000000'; // Foreground style color (defaults to black) |
879 | $leftmargin = ''; // Left margin style |
880 | $title = ''; // HTML title if any |
881 | |
882 | $i = 0; |
883 | while ( $i < $j ) { |
884 | if ( $body{$i} == '<' ) { |
885 | $pos = $i + 1; |
886 | $tag = ''; |
887 | while ($body{$pos} == ' ' || $body{$pos} == "\t" || |
888 | $body{$pos} == "\n") { |
889 | $pos ++; |
890 | } |
891 | while (strlen($tag) < 4 && $body{$pos} != ' ' && |
892 | $body{$pos} != "\t" && $body{$pos} != "\n") { |
893 | $tag .= $body{$pos}; |
894 | $pos ++; |
895 | } |
896 | switch( strtoupper( $tag ) ) { |
897 | // Strips the entire tag and contents |
898 | case 'APPL': |
899 | case 'EMBB': |
900 | case 'FRAM': |
901 | case 'SCRI': |
902 | case 'OBJE': |
903 | $etg = '/' . $tag; |
904 | while ( $body{$i+1}.$body{$i+2}.$body{$i+3}.$body{$i+4}.$body{$i+5} <> $etg && |
905 | $i < $j ) $i++; |
906 | while ( $i < $j && $body{++$i} <> '>' ); |
907 | // $ret .= "<!-- $tag removed -->"; |
908 | break; |
909 | // Substitute Title |
910 | case 'TITL': |
911 | $i += 5; |
912 | while ( $body{$i} <> '>' && // </title> |
913 | $i < $j ) |
a3daaaf3 |
914 | $i++; |
451f74a2 |
915 | $i++; |
916 | $title = ''; |
917 | while ( $body{$i} <> '<' && // </title> |
918 | $i < $j ) { |
919 | $title .= $body{$i}; |
920 | $i++; |
921 | } |
922 | $i += 7; |
923 | break; |
924 | // Destroy these tags |
925 | case 'HTML': |
926 | case 'HEAD': |
927 | case '/HTM': |
928 | case '/HEA': |
929 | case '!DOC': |
930 | case 'META': |
89863d1d |
931 | //case 'DIV ': |
932 | //case '/DIV': |
451f74a2 |
933 | case '!-- ': |
934 | $i += 4; |
935 | while ( $body{$i} <> '>' && |
936 | $i < $j ) |
937 | $i++; |
938 | // $i++; |
939 | break; |
940 | case 'STYL': |
941 | $i += 5; |
942 | while ( $body{$i} <> '>' && // </title> |
943 | $i < $j ) |
944 | $i++; |
945 | $i++; |
946 | // We parse the style to look for interesting stuff |
947 | $styleblk = ''; |
948 | while ( $body{$i} <> '>' && |
949 | $i < $j ) { |
950 | // First we get the name of the style |
951 | $style = ''; |
952 | while ( $body{$i} <> '>' && |
953 | $body{$i} <> '<' && |
954 | $body{$i} <> '{' && |
955 | $i < $j ) { |
956 | if ( isnoSep( $body{$i} ) ) |
957 | $style .= $body{$i}; |
958 | $i++; |
959 | } |
960 | stripComments( $i, $j, $body ); |
961 | $style = strtoupper( trim( $style ) ); |
962 | if ( $style == 'BODY' ) { |
963 | // Next we look into the definitions of the body style |
964 | while ( $body{$i} <> '>' && |
965 | $body{$i} <> '}' && |
a3daaaf3 |
966 | $i < $j ) { |
451f74a2 |
967 | // We look for the background color if any. |
968 | if ( substr( $body, $i, 17 ) == 'BACKGROUND-COLOR:' ) { |
969 | $i += 17; |
970 | $bgcolor = getStyleData( $i, $j, $body ); |
971 | } elseif ( substr( $body, $i, 12 ) == 'MARGIN-LEFT:' ) { |
972 | $i += 12; |
973 | $leftmargin = getStyleData( $i, $j, $body ); |
974 | } |
a3daaaf3 |
975 | $i++; |
976 | } |
451f74a2 |
977 | } else { |
978 | // Other style are mantained |
979 | $styleblk .= "$style "; |
980 | while ( $body{$i} <> '>' && |
981 | $body{$i} <> '<' && |
982 | $body{$i} <> '}' && |
983 | $i < $j ) { |
984 | $styleblk .= $body{$i}; |
a3daaaf3 |
985 | $i++; |
451f74a2 |
986 | } |
987 | $styleblk .= $body{$i}; |
988 | } |
989 | stripComments( $i, $j, $body ); |
990 | if ( $body{$i} <> '>' ) |
991 | $i++; |
992 | } |
993 | if ( $styleblk <> '' ) |
994 | $ret .= "<style>$styleblk"; |
995 | break; |
996 | case 'BODY': |
997 | if ( $title <> '' ) |
998 | $ret .= '<b>' . _("Title:") . " </b>$title<br>\n"; |
999 | $ret .= "<TABLE"; |
1000 | $i += 5; |
1001 | if (! isset($base)) { |
1002 | $base = ''; |
1003 | } |
1004 | $ret .= stripEvent( $i, $j, $body, $id, $base ); |
1005 | $ret .= " bgcolor=$bgcolor width=\"100%\"><tr>"; |
1006 | if ( $leftmargin <> '' ) |
1007 | $ret .= "<td width=$leftmargin> </td>"; |
1008 | $ret .= '<td>'; |
1009 | if (strtolower($bgcolor) == 'ffffff' || |
1010 | strtolower($bgcolor) == '#ffffff') |
1011 | $ret .= '<font color=#000000>'; |
1012 | break; |
1013 | case 'BASE': |
1014 | $i += 5; |
1015 | $base = ''; |
1016 | while ( !isNoSep( $body{$i} ) && |
1017 | $i < $j ) { |
1018 | $i++; |
1019 | } |
1020 | if ( strcasecmp( substr( $base, 0, 4 ), 'href' ) ) { |
a3daaaf3 |
1021 | $i += 5; |
451f74a2 |
1022 | while ( !isNoSep( $body{$i} ) && |
1023 | $i < $j ) { |
a3daaaf3 |
1024 | $i++; |
451f74a2 |
1025 | } |
1026 | while ( $body{$i} <> '>' && |
a3daaaf3 |
1027 | $i < $j ) { |
451f74a2 |
1028 | if ( $body{$i} <> '"' ) { |
1029 | $base .= $body{$i}; |
a3daaaf3 |
1030 | } |
451f74a2 |
1031 | $i++; |
a3daaaf3 |
1032 | } |
451f74a2 |
1033 | // Debuging $ret .= "<!-- base == $base -->"; |
1034 | if ( strcasecmp( substr( $base, 0, 4 ), 'file' ) <> 0 ) { |
1035 | $ret .= "\n<BASE HREF=\"$base\">\n"; |
a3daaaf3 |
1036 | } |
a3daaaf3 |
1037 | } |
451f74a2 |
1038 | break; |
1039 | case '/BOD': |
1040 | $ret .= '</font></td></tr></TABLE>'; |
1041 | $i += 6; |
a3daaaf3 |
1042 | break; |
1043 | default: |
451f74a2 |
1044 | // Following tags can contain some event handler, lets search it |
1045 | stripComments( $i, $j, $body ); |
1046 | if (! isset($base)) { |
1047 | $base = ''; |
1048 | } |
1049 | $ret .= stripEvent( $i, $j, $body, $id, $base ) . '>'; |
1050 | // $ret .= "<!-- $tag detected -->"; |
1051 | } |
1052 | } else { |
1053 | $ret .= $body{$i}; |
a3daaaf3 |
1054 | } |
451f74a2 |
1055 | $i++; |
1056 | } |
a3daaaf3 |
1057 | |
451f74a2 |
1058 | return( "\n\n<!-- HTML Output ahead -->\n" . |
1059 | $ret . |
1060 | "\n<!-- END of HTML Output --><base href=\"". |
494424e3 |
1061 | get_location() . '/'. |
451f74a2 |
1062 | "\">\n\n" ); |
1063 | } |
a3daaaf3 |
1064 | |
451f74a2 |
1065 | function isNoSep( $char ) { |
1066 | |
1067 | switch( $char ) { |
1068 | case ' ': |
1069 | case "\n": |
1070 | case "\t": |
1071 | case "\r": |
1072 | case '>': |
1073 | case '"': |
1074 | return( FALSE ); |
1075 | break; |
1076 | default: |
1077 | return( TRUE ); |
1078 | } |
a3daaaf3 |
1079 | |
451f74a2 |
1080 | } |
a3daaaf3 |
1081 | |
451f74a2 |
1082 | /* |
1083 | The following function is usefull to remove extra data that can cause |
1084 | html not to display properly. Especialy with MS stuff. |
1085 | */ |
1086 | |
1087 | function stripComments( &$i, $j, &$body ) { |
1088 | |
1089 | while ( $body{$i}.$body{$i+1}.$body{$i+2}.$body{$i+3} == '<!--' && |
1090 | $i < $j ) { |
1091 | $i += 5; |
1092 | while ( $body{$i-2}.$body{$i-1}.$body{$i} <> '-->' && |
1093 | $i < $j ) |
a3daaaf3 |
1094 | $i++; |
451f74a2 |
1095 | $i++; |
1096 | } |
a3daaaf3 |
1097 | |
451f74a2 |
1098 | return; |
a3daaaf3 |
1099 | |
451f74a2 |
1100 | } |
a3daaaf3 |
1101 | |
451f74a2 |
1102 | /* Gets the style data of a specific style */ |
a3daaaf3 |
1103 | |
451f74a2 |
1104 | function getStyleData( &$i, $j, &$body ) { |
a3daaaf3 |
1105 | |
451f74a2 |
1106 | // We skip spaces |
1107 | while ( $body{$i} <> '>' && !isNoSep( $body{$i} ) && |
1108 | $i < $j ) { |
1109 | $i++; |
1110 | } |
1111 | // And get the color |
1112 | $ret = ''; |
1113 | while ( isNoSep( $body{$i} ) && |
1114 | $i < $j ) { |
1115 | $ret .= $body{$i}; |
1116 | $i++; |
1117 | } |
a3daaaf3 |
1118 | |
451f74a2 |
1119 | return( $ret ); |
1120 | } |
a3daaaf3 |
1121 | |
451f74a2 |
1122 | /* |
1123 | Private function for strip_dangerous_tag. Look for event based coded and "remove" it |
1124 | change on with no (onload -> noload) |
1125 | */ |
a3daaaf3 |
1126 | |
451f74a2 |
1127 | function stripEvent( &$i, $j, &$body, $id, $base ) { |
a3daaaf3 |
1128 | |
451f74a2 |
1129 | global $message, $base_uri; |
a3daaaf3 |
1130 | |
451f74a2 |
1131 | $ret = ''; |
a3daaaf3 |
1132 | |
451f74a2 |
1133 | while ( $body{$i} <> '>' && |
1134 | $i < $j ) { |
1135 | $etg = strtolower($body{$i}.$body{$i+1}.$body{$i+2}); |
1136 | switch( $etg ) { |
1137 | case 'src': |
1138 | // This is probably a src specification |
1139 | $k = $i + 3; |
1140 | while( !isNoSep( $body{$k} )) { |
1141 | $k++; |
1142 | } |
1143 | if ( $body{$k} == '=' ) { |
1144 | /* It is indeed */ |
1145 | $k++; |
1146 | while( !isNoSep( $body{$k} ) && |
1147 | $k < $j ) { |
1148 | $k++; |
1149 | } |
1150 | $src = ''; |
1151 | while ( $body{$k} <> '>' && isNoSep( $body{$k} ) && |
1152 | $k < $j ) { |
1153 | $src .= $body{$k}; |
1154 | $k++; |
1155 | } |
1156 | while( !isNoSep( $body{$k} ) && |
1157 | $k < $j ) { |
1158 | $k++; |
1159 | } |
1160 | if ( strtolower( substr( $src, 0, 4 ) ) == 'cid:' ) { |
1161 | $src = substr( $src, 4 ); |
1162 | $src = "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=" . |
1163 | urlencode( $message->header->mailbox ) . |
1164 | "&passed_ent_id=" . find_ent_id( $src, $message ); |
1165 | } else if ( strtolower( substr( $src, 0, 4 ) ) <> 'http' || |
1166 | stristr( $src, $base_uri ) ) { |
1167 | /* Javascript and local urls goes out */ |
1168 | $src = '../images/' . _("sec_remove_eng.png"); |
1169 | } |
1170 | $ret .= 'src="' . $src . '" '; |
89863d1d |
1171 | $i = $k - 2; |
451f74a2 |
1172 | } else { |
1173 | $ret .= 'src'; |
1174 | $i = $i + 3; |
1175 | } |
1176 | |
1177 | break; |
1178 | case '../': |
1179 | // Retrolinks are not allowed without a base because they mess with SM security |
1180 | if ( $base == '' ) { |
a3daaaf3 |
1181 | $i += 2; |
451f74a2 |
1182 | } else { |
1183 | $ret .= '.'; |
a3daaaf3 |
1184 | } |
451f74a2 |
1185 | break; |
1186 | case 'cid': |
1187 | // Internal link |
1188 | $k = $i-1; |
1189 | if ( $body{$i+3} == ':') { |
1190 | $i +=4; |
1191 | $name = ''; |
1192 | while ( isNoSep( $body{$i} ) && |
1193 | $i < $j ) { |
1194 | $name .= $body{$i++}; |
1195 | } |
1196 | if ( $name <> '' ) { |
1197 | $ret .= "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=" . |
1198 | urlencode( $message->header->mailbox ) . |
1199 | "&passed_ent_id=" . find_ent_id( $name, $message ); |
1200 | if ( $body{$k} == '"' ) |
1201 | $ret .= '" '; |
1202 | else |
1203 | $ret .= ' '; |
1204 | } |
1205 | if ( $body{$i} == '>' ) |
1206 | $i -= 1; |
1207 | } |
1208 | break; |
1209 | case ' on': |
1210 | case "\non": |
1211 | case "\ron": |
1212 | case "\ton": |
1213 | $ret .= ' no'; |
1214 | $i += 2; |
1215 | break; |
1216 | case 'pt:': |
1217 | if ( strcasecmp( $body{$i-4}.$body{$i-3}.$body{$i-2}.$body{$i-1}.$body{$i}.$body{$i+1}.$body{$i+2}, 'script:') == 0 ) { |
1218 | $ret .= '_no/'; |
1219 | } else { |
1220 | $ret .= $etg; |
1221 | } |
1222 | $i += 2; |
1223 | break; |
1224 | default: |
1225 | $ret .= $body{$i}; |
a3daaaf3 |
1226 | } |
451f74a2 |
1227 | $i++; |
a3daaaf3 |
1228 | } |
451f74a2 |
1229 | return( $ret ); |
1230 | } |
a3daaaf3 |
1231 | |
1232 | |
451f74a2 |
1233 | /* This function trys to locate the entity_id of a specific mime element */ |
a3daaaf3 |
1234 | |
451f74a2 |
1235 | function find_ent_id( $id, $message ) { |
a3daaaf3 |
1236 | |
451f74a2 |
1237 | $ret = ''; |
1238 | for ($i=0; $ret == '' && $i < count($message->entities); $i++) { |
a3daaaf3 |
1239 | |
451f74a2 |
1240 | if ( $message->entities[$i]->header->entity_id == '' ) { |
1241 | $ret = find_ent_id( $id, $message->entities[$i] ); |
1242 | } else { |
1243 | if ( strcasecmp( $message->entities[$i]->header->id, $id ) == 0 ) |
1244 | $ret = $message->entities[$i]->header->entity_id; |
a3daaaf3 |
1245 | } |
1246 | |
a3daaaf3 |
1247 | } |
451f74a2 |
1248 | |
1249 | return( $ret ); |
1250 | |
1251 | } |
1c72b151 |
1252 | ?> |