59177427 |
1 | <?php |
2ba13803 |
2 | |
35586184 |
3 | /** |
02474e43 |
4 | * mime.php |
5 | * |
6 | * Copyright (c) 1999-2005 The SquirrelMail Project Team |
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 | * @version $Id$ |
13 | * @package squirrelmail |
14 | */ |
b74ba498 |
15 | |
d6c32258 |
16 | /** The typical includes... */ |
b68edc75 |
17 | require_once(SM_PATH . 'functions/imap.php'); |
18 | require_once(SM_PATH . 'functions/attachment_common.php'); |
8beafbbc |
19 | |
7c7b74b3 |
20 | /* -------------------------------------------------------------------------- */ |
21 | /* MIME DECODING */ |
22 | /* -------------------------------------------------------------------------- */ |
b74ba498 |
23 | |
d6c32258 |
24 | /** |
02474e43 |
25 | * Get the MIME structure |
26 | * |
27 | * This function gets the structure of a message and stores it in the "message" class. |
28 | * It will return this object for use with all relevant header information and |
29 | * fully parsed into the standard "message" object format. |
30 | */ |
a4a70693 |
31 | function mime_structure ($bodystructure, $flags=array()) { |
c9d78ab4 |
32 | |
3d8371be |
33 | /* Isolate the body structure and remove beginning and end parenthesis. */ |
a4a70693 |
34 | $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13)); |
451f74a2 |
35 | $read = trim(substr ($read, 0, -1)); |
22efa9fb |
36 | $i = 0; |
37 | $msg = Message::parseStructure($read,$i); |
9de42168 |
38 | if (!is_object($msg)) { |
bd9c880b |
39 | include_once(SM_PATH . 'functions/display_messages.php'); |
3d8371be |
40 | global $color, $mailbox; |
c96c32f4 |
41 | /* removed urldecode because $_GET is auto urldecoded ??? */ |
a48eba8f |
42 | displayPageHeader( $color, $mailbox ); |
5e8de8b6 |
43 | $errormessage = _("SquirrelMail could not decode the bodystructure of the message"); |
3c621ba1 |
44 | $errormessage .= '<br />'._("the provided bodystructure by your imap-server").':<br /><br />'; |
472e7acb |
45 | $errormessage .= '<pre>' . htmlspecialchars($read) . '</pre>'; |
9de42168 |
46 | plain_error_message( $errormessage, $color ); |
3d8371be |
47 | echo '</body></html>'; |
9de42168 |
48 | exit; |
49 | } |
a4a70693 |
50 | if (count($flags)) { |
7a9e9c89 |
51 | foreach ($flags as $flag) { |
52 | $char = strtoupper($flag{1}); |
53 | switch ($char) { |
3d8371be |
54 | case 'S': |
55 | if (strtolower($flag) == '\\seen') { |
56 | $msg->is_seen = true; |
57 | } |
58 | break; |
59 | case 'A': |
60 | if (strtolower($flag) == '\\answered') { |
61 | $msg->is_answered = true; |
62 | } |
63 | break; |
64 | case 'D': |
65 | if (strtolower($flag) == '\\deleted') { |
66 | $msg->is_deleted = true; |
67 | } |
68 | break; |
69 | case 'F': |
70 | if (strtolower($flag) == '\\flagged') { |
71 | $msg->is_flagged = true; |
72 | } |
73 | break; |
74 | case 'M': |
75 | if (strtolower($flag) == '$mdnsent') { |
76 | $msg->is_mdnsent = true; |
77 | } |
78 | break; |
79 | default: |
80 | break; |
7a9e9c89 |
81 | } |
82 | } |
451f74a2 |
83 | } |
7a9e9c89 |
84 | // listEntities($msg); |
3d8371be |
85 | return $msg; |
451f74a2 |
86 | } |
b74ba498 |
87 | |
22efa9fb |
88 | |
89 | |
3d8371be |
90 | /* This starts the parsing of a particular structure. It is called recursively, |
02474e43 |
91 | * so it can be passed different structures. It returns an object of type |
92 | * $message. |
93 | * First, it checks to see if it is a multipart message. If it is, then it |
94 | * handles that as it sees is necessary. If it is just a regular entity, |
95 | * then it parses it and adds the necessary header information (by calling out |
96 | * to mime_get_elements() |
97 | */ |
451f74a2 |
98 | |
4d592352 |
99 | function mime_fetch_body($imap_stream, $id, $ent_id=1, $fetch_size=0) { |
3d8371be |
100 | /* Do a bit of error correction. If we couldn't find the entity id, just guess |
02474e43 |
101 | * that it is the first one. That is usually the case anyway. |
102 | */ |
7c7b74b3 |
103 | |
09a4bde3 |
104 | if (!$ent_id) { |
08b7f7cc |
105 | $cmd = "FETCH $id BODY[]"; |
1035e159 |
106 | } else { |
08b7f7cc |
107 | $cmd = "FETCH $id BODY[$ent_id]"; |
09a4bde3 |
108 | } |
3d8371be |
109 | |
4d592352 |
110 | if ($fetch_size!=0) $cmd .= "<0.$fetch_size>"; |
da2415c1 |
111 | |
6201339c |
112 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, TRUE); |
77b88425 |
113 | do { |
3d8371be |
114 | $topline = trim(array_shift($data)); |
115 | } while($topline && ($topline[0] == '*') && !preg_match('/\* [0-9]+ FETCH.*/i', $topline)) ; |
a4a70693 |
116 | |
451f74a2 |
117 | $wholemessage = implode('', $data); |
118 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
3d8371be |
119 | $ret = substr($wholemessage, 0, $regs[1]); |
120 | /* There is some information in the content info header that could be important |
02474e43 |
121 | * in order to parse html messages. Let's get them here. |
122 | */ |
0600bdf1 |
123 | // if ($ret{0} == '<') { |
6201339c |
124 | // $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, TRUE); |
0600bdf1 |
125 | // } |
451f74a2 |
126 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
127 | $ret = $regs[1]; |
128 | } else { |
129 | global $where, $what, $mailbox, $passed_id, $startMessage; |
3d8371be |
130 | $par = 'mailbox=' . urlencode($mailbox) . '&passed_id=' . $passed_id; |
451f74a2 |
131 | if (isset($where) && isset($what)) { |
3d8371be |
132 | $par .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
a3daaaf3 |
133 | } else { |
3d8371be |
134 | $par .= '&startMessage=' . $startMessage . '&show_more=0'; |
451f74a2 |
135 | } |
e5ea9327 |
136 | $par .= '&response=' . urlencode($response) . |
3d8371be |
137 | '&message=' . urlencode($message) . |
138 | '&topline=' . urlencode($topline); |
a019eeb8 |
139 | |
3c621ba1 |
140 | echo '<tt><br />' . |
02474e43 |
141 | '<table width="80%"><tr>' . |
142 | '<tr><td colspan="2">' . |
143 | _("Body retrieval error. The reason for this is most probably that the message is malformed.") . |
144 | '</td></tr>' . |
145 | '<tr><td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
146 | '<tr><td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
147 | '<tr><td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
148 | '<tr><td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
149 | "</table><br /></tt></font><hr />"; |
346817d4 |
150 | |
6201339c |
151 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, TRUE); |
451f74a2 |
152 | array_shift($data); |
153 | $wholemessage = implode('', $data); |
a019eeb8 |
154 | |
346817d4 |
155 | $ret = $wholemessage; |
a3daaaf3 |
156 | } |
3d8371be |
157 | return $ret; |
451f74a2 |
158 | } |
d4467150 |
159 | |
1035e159 |
160 | function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding) { |
1035e159 |
161 | |
3d8371be |
162 | /* Don't kill the connection if the browser is over a dialup |
02474e43 |
163 | * and it would take over 30 seconds to download it. |
164 | * Don't call set_time_limit in safe mode. |
165 | */ |
b7206e1d |
166 | |
3d8371be |
167 | if (!ini_get('safe_mode')) { |
b7206e1d |
168 | set_time_limit(0); |
169 | } |
7c7b74b3 |
170 | /* in case of base64 encoded attachments, do not buffer them. |
02474e43 |
171 | Instead, echo the decoded attachment directly to screen */ |
7c7b74b3 |
172 | if (strtolower($encoding) == 'base64') { |
173 | if (!$ent_id) { |
02474e43 |
174 | $query = "FETCH $id BODY[]"; |
7c7b74b3 |
175 | } else { |
02474e43 |
176 | $query = "FETCH $id BODY[$ent_id]"; |
7c7b74b3 |
177 | } |
6201339c |
178 | sqimap_run_command($imap_stream,$query,true,$response,$message,TRUE,'sqimap_base64_decode','php://stdout',true); |
1d142b8d |
179 | } else { |
02474e43 |
180 | $body = mime_fetch_body ($imap_stream, $id, $ent_id); |
181 | echo decodeBody($body, $encoding); |
1d142b8d |
182 | } |
346817d4 |
183 | |
da2415c1 |
184 | /* |
02474e43 |
185 | TODO, use the same method for quoted printable. |
186 | However, I assume that quoted printable attachments aren't that large |
187 | so the performancegain / memory usage drop will be minimal. |
188 | If we decide to add that then we need to adapt sqimap_fread because |
189 | we need to split te result on \n and fread doesn't stop at \n. That |
190 | means we also should provide $results from sqimap_fread (by ref) to |
191 | te function and set $no_return to false. The $filter function for |
192 | quoted printable should handle unsetting of $results. |
7c7b74b3 |
193 | */ |
da2415c1 |
194 | /* |
02474e43 |
195 | TODO 2: find out how we write to the output stream php://stdout. fwrite |
196 | doesn't work because 'php://stdout isn't a stream. |
7c7b74b3 |
197 | */ |
198 | |
5d9c6f73 |
199 | return; |
200 | /* |
451f74a2 |
201 | fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n"); |
202 | $cnt = 0; |
203 | $continue = true; |
1d142b8d |
204 | $read = fgets ($imap_stream,8192); |
205 | |
206 | |
451f74a2 |
207 | // This could be bad -- if the section has sqimap_session_id() . ' OK' |
208 | // or similar, it will kill the download. |
1d142b8d |
209 | while (!ereg("^".$sid_s." (OK|BAD|NO)(.*)$", $read, $regs)) { |
5d9c6f73 |
210 | if (trim($read) == ')==') { |
211 | $read1 = $read; |
212 | $read = fgets ($imap_stream,4096); |
213 | if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
214 | return; |
215 | } else { |
216 | echo decodeBody($read1, $encoding) . |
02474e43 |
217 | decodeBody($read, $encoding); |
5d9c6f73 |
218 | } |
219 | } else if ($cnt) { |
220 | echo decodeBody($read, $encoding); |
221 | } |
222 | $read = fgets ($imap_stream,4096); |
223 | $cnt++; |
1d142b8d |
224 | // break; |
451f74a2 |
225 | } |
5d9c6f73 |
226 | */ |
451f74a2 |
227 | } |
beb9e459 |
228 | |
451f74a2 |
229 | /* -[ END MIME DECODING ]----------------------------------------------------------- */ |
d4467150 |
230 | |
3d8371be |
231 | /* This is here for debugging purposes. It will print out a list |
02474e43 |
232 | * of all the entity IDs that are in the $message object. |
233 | */ |
451f74a2 |
234 | function listEntities ($message) { |
3d8371be |
235 | if ($message) { |
3c621ba1 |
236 | echo "<tt>" . $message->entity_id . ' : ' . $message->type0 . '/' . $message->type1 . ' parent = '. $message->parent->entity_id. '<br />'; |
3d8371be |
237 | for ($i = 0; isset($message->entities[$i]); $i++) { |
238 | echo "$i : "; |
239 | $msg = listEntities($message->entities[$i]); |
240 | |
241 | if ($msg) { |
242 | echo "return: "; |
243 | return $msg; |
244 | } |
245 | } |
a4a70693 |
246 | } |
451f74a2 |
247 | } |
f0c4dc12 |
248 | |
f792c641 |
249 | function getPriorityStr($priority) { |
3d8371be |
250 | $priority_level = substr($priority,0,1); |
251 | |
252 | switch($priority_level) { |
253 | /* Check for a higher then normal priority. */ |
254 | case '1': |
255 | case '2': |
256 | $priority_string = _("High"); |
257 | break; |
258 | |
259 | /* Check for a lower then normal priority. */ |
260 | case '4': |
261 | case '5': |
262 | $priority_string = _("Low"); |
263 | break; |
264 | |
265 | /* Check for a normal priority. */ |
266 | case '3': |
267 | default: |
268 | $priority_level = '3'; |
269 | $priority_string = _("Normal"); |
270 | break; |
271 | |
272 | } |
273 | return $priority_string; |
f792c641 |
274 | } |
275 | |
451f74a2 |
276 | /* returns a $message object for a particular entity id */ |
277 | function getEntity ($message, $ent_id) { |
a4a70693 |
278 | return $message->getEntity($ent_id); |
451f74a2 |
279 | } |
8beafbbc |
280 | |
3d8371be |
281 | /* translateText |
02474e43 |
282 | * Extracted from strings.php 23/03/2002 |
283 | */ |
da4c66e8 |
284 | |
285 | function translateText(&$body, $wrap_at, $charset) { |
3d8371be |
286 | global $where, $what; /* from searching */ |
287 | global $color; /* color theme */ |
da4c66e8 |
288 | |
b68edc75 |
289 | require_once(SM_PATH . 'functions/url_parser.php'); |
da4c66e8 |
290 | |
291 | $body_ary = explode("\n", $body); |
da4c66e8 |
292 | for ($i=0; $i < count($body_ary); $i++) { |
293 | $line = $body_ary[$i]; |
294 | if (strlen($line) - 2 >= $wrap_at) { |
c7aff938 |
295 | sqWordWrap($line, $wrap_at, $charset); |
da4c66e8 |
296 | } |
297 | $line = charset_decode($charset, $line); |
298 | $line = str_replace("\t", ' ', $line); |
299 | |
300 | parseUrl ($line); |
301 | |
3d8371be |
302 | $quotes = 0; |
da4c66e8 |
303 | $pos = 0; |
3d8371be |
304 | $j = strlen($line); |
da4c66e8 |
305 | |
3d8371be |
306 | while ($pos < $j) { |
da4c66e8 |
307 | if ($line[$pos] == ' ') { |
3d8371be |
308 | $pos++; |
da4c66e8 |
309 | } else if (strpos($line, '>', $pos) === $pos) { |
310 | $pos += 4; |
3d8371be |
311 | $quotes++; |
da4c66e8 |
312 | } else { |
313 | break; |
314 | } |
315 | } |
3d8371be |
316 | |
83c94382 |
317 | if ($quotes % 2) { |
3d8371be |
318 | if (!isset($color[13])) { |
da4c66e8 |
319 | $color[13] = '#800000'; |
320 | } |
4c25967c |
321 | $line = '<font color="' . $color[13] . '">' . $line . '</font>'; |
322 | } elseif ($quotes) { |
323 | if (!isset($color[14])) { |
324 | $color[14] = '#FF0000'; |
325 | } |
326 | $line = '<font color="' . $color[14] . '">' . $line . '</font>'; |
da4c66e8 |
327 | } |
3d8371be |
328 | |
da4c66e8 |
329 | $body_ary[$i] = $line; |
330 | } |
331 | $body = '<pre>' . implode("\n", $body_ary) . '</pre>'; |
332 | } |
333 | |
a2bfcbce |
334 | /** |
da1b55ad |
335 | * This returns a parsed string called $body. That string can then |
336 | * be displayed as the actual message in the HTML. It contains |
337 | * everything needed, including HTML Tags, Attachments at the |
338 | * bottom, etc. |
339 | * |
340 | * Since 1.2.0 function uses message_body hook. |
341 | * Till 1.3.0 function included output of formatAttachments(). |
342 | * |
343 | * @param resource $imap_stream imap connection resource |
344 | * @param object $message squirrelmail message object |
345 | * @param array $color squirrelmail color theme array |
346 | * @param integer $wrap_at number of characters per line |
347 | * @param string $ent_num (since 1.3.0) message part id |
348 | * @param integer $id (since 1.3.0) message id |
349 | * @param string $mailbox (since 1.3.0) imap folder name |
350 | * @param boolean $clean (since 1.5.1) Do not output stuff that's irrelevant for the printable version. |
351 | * @return string html formated message text |
352 | */ |
a2bfcbce |
353 | function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num, $id, $mailbox='INBOX', $clean=FALSE) { |
3d8371be |
354 | /* This if statement checks for the entity to show as the |
02474e43 |
355 | * primary message. To add more of them, just put them in the |
356 | * order that is their priority. |
357 | */ |
ce68b76b |
358 | global $startMessage, $languages, $squirrelmail_language, |
02474e43 |
359 | $show_html_default, $sort, $has_unsafe_images, $passed_ent_id; |
77bfbd2e |
360 | |
5262d9a6 |
361 | if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) { |
362 | $view_unsafe_images = false; |
77bfbd2e |
363 | } |
d03c24f4 |
364 | |
cc34b00d |
365 | $body = ''; |
23bcec6f |
366 | $urlmailbox = urlencode($mailbox); |
451f74a2 |
367 | $body_message = getEntity($message, $ent_num); |
368 | if (($body_message->header->type0 == 'text') || |
369 | ($body_message->header->type0 == 'rfc822')) { |
3d8371be |
370 | $body = mime_fetch_body ($imap_stream, $id, $ent_num); |
451f74a2 |
371 | $body = decodeBody($body, $body_message->header->encoding); |
e842b215 |
372 | |
373 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
33a55f5a |
374 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) { |
e842b215 |
375 | if (mb_detect_encoding($body) != 'ASCII') { |
33a55f5a |
376 | $body = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode',$body); |
e842b215 |
377 | } |
378 | } |
451f74a2 |
379 | $hookResults = do_hook("message_body", $body); |
380 | $body = $hookResults[1]; |
23bcec6f |
381 | |
3d8371be |
382 | /* If there are other types that shouldn't be formatted, add |
02474e43 |
383 | * them here. |
384 | */ |
3d8371be |
385 | |
451f74a2 |
386 | if ($body_message->header->type1 == 'html') { |
3d8371be |
387 | if ($show_html_default <> 1) { |
85015544 |
388 | $entity_conv = array(' ' => ' ', |
02474e43 |
389 | '<p>' => "\n", |
390 | '<P>' => "\n", |
391 | '<br>' => "\n", |
392 | '<BR>' => "\n", |
393 | '<br />' => "\n", |
394 | '<BR />' => "\n", |
395 | '>' => '>', |
396 | '<' => '<'); |
85015544 |
397 | $body = strtr($body, $entity_conv); |
3d8371be |
398 | $body = strip_tags($body); |
85015544 |
399 | $body = trim($body); |
400 | translateText($body, $wrap_at, |
02474e43 |
401 | $body_message->header->getParameter('charset')); |
a3daaaf3 |
402 | } else { |
3d8371be |
403 | $body = magicHTML($body, $id, $message, $mailbox); |
a3daaaf3 |
404 | } |
451f74a2 |
405 | } else { |
3d8371be |
406 | translateText($body, $wrap_at, |
02474e43 |
407 | $body_message->header->getParameter('charset')); |
451f74a2 |
408 | } |
a2bfcbce |
409 | |
410 | // if this is the clean display (i.e. printer friendly), stop here. |
411 | if ( $clean ) { |
412 | return $body; |
413 | } |
414 | |
83cf04bd |
415 | $link = 'passed_id=' . $id . '&ent_id='.$ent_num. |
08b7f7cc |
416 | '&mailbox=' . $urlmailbox .'&sort=' . $sort . |
da2415c1 |
417 | '&startMessage=' . $startMessage . '&show_more=0'; |
08b7f7cc |
418 | if (isset($passed_ent_id)) { |
419 | $link .= '&passed_ent_id='.$passed_ent_id; |
420 | } |
8d863f64 |
421 | $body .= '<center><small><a href="download.php?absolute_dl=true&' . |
02474e43 |
422 | $link . '">' . _("Download this as a file") . '</a>'; |
7aad7b77 |
423 | if ($view_unsafe_images) { |
23f617b8 |
424 | $text = _("Hide Unsafe Images"); |
7aad7b77 |
425 | } else { |
08b7f7cc |
426 | if (isset($has_unsafe_images) && $has_unsafe_images) { |
427 | $link .= '&view_unsafe_images=1'; |
428 | $text = _("View Unsafe Images"); |
429 | } else { |
430 | $text = ''; |
431 | } |
3d8371be |
432 | } |
83cf04bd |
433 | if($text != '') { |
434 | $body .= ' | <a href="read_body.php?' . $link . '">' . $text . '</a>'; |
435 | } |
3c621ba1 |
436 | $body .= '</small></center><br />' . "\n"; |
3d8371be |
437 | } |
438 | return $body; |
451f74a2 |
439 | } |
b74ba498 |
440 | |
da1b55ad |
441 | /** |
442 | * Displays attachment links and information |
443 | * FIXME: SM_PATH is used in URLs |
444 | * |
445 | * Since 1.3.0 function is not included in formatBody() call. |
446 | * |
447 | * Since 1.0.2 uses attachment $type0/$type1 hook. |
448 | * Since 1.2.5 uses attachment $type0/* hook. |
449 | * Since 1.5.0 uses attachments_bottom hook. |
450 | * |
451 | * @param object $message SquirrelMail message object |
452 | * @param array $exclude_id message parts that are not attachments. |
453 | * @param string $mailbox mailbox name |
454 | * @param integer $id message id |
455 | * @return string html formated attachment information. |
456 | */ |
23bcec6f |
457 | function formatAttachments($message, $exclude_id, $mailbox, $id) { |
80dcd298 |
458 | global $where, $what, $startMessage, $color, $passed_ent_id; |
451f74a2 |
459 | |
23bcec6f |
460 | $att_ar = $message->getAttachments($exclude_id); |
451f74a2 |
461 | |
23bcec6f |
462 | if (!count($att_ar)) return ''; |
2e25760a |
463 | |
8f5425ec |
464 | $attachments = ''; |
2e25760a |
465 | |
23bcec6f |
466 | $urlMailbox = urlencode($mailbox); |
467 | |
468 | foreach ($att_ar as $att) { |
fdc9d9b5 |
469 | $ent = $att->entity_id; |
2e25760a |
470 | $header = $att->header; |
f0c4dc12 |
471 | $type0 = strtolower($header->type0); |
472 | $type1 = strtolower($header->type1); |
2e25760a |
473 | $name = ''; |
21dab2dc |
474 | $links['download link']['text'] = _("Download"); |
6b04287c |
475 | $links['download link']['href'] = SM_PATH . |
476 | "src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent"; |
2e25760a |
477 | if ($type0 =='message' && $type1 == 'rfc822') { |
6b04287c |
478 | $default_page = SM_PATH . 'src/read_body.php'; |
2e25760a |
479 | $rfc822_header = $att->rfc822_header; |
098ea084 |
480 | $filename = $rfc822_header->subject; |
6cc08d8b |
481 | if (trim( $filename ) == '') { |
482 | $filename = 'untitled-[' . $ent . ']' ; |
08b7f7cc |
483 | } |
2e25760a |
484 | $from_o = $rfc822_header->from; |
485 | if (is_object($from_o)) { |
04ea844e |
486 | $from_name = decodeHeader($from_o->getAddress(false)); |
2e25760a |
487 | } else { |
488 | $from_name = _("Unknown sender"); |
f0c4dc12 |
489 | } |
3d8371be |
490 | $description = $from_name; |
23bcec6f |
491 | } else { |
6b04287c |
492 | $default_page = SM_PATH . 'src/download.php'; |
02474e43 |
493 | $filename = $att->getFilename(); |
f810c0b2 |
494 | if ($header->description) { |
098ea084 |
495 | $description = decodeHeader($header->description); |
f810c0b2 |
496 | } else { |
3d8371be |
497 | $description = ''; |
498 | } |
2e25760a |
499 | } |
500 | |
501 | $display_filename = $filename; |
3d8371be |
502 | if (isset($passed_ent_id)) { |
503 | $passed_ent_id_link = '&passed_ent_id='.$passed_ent_id; |
504 | } else { |
505 | $passed_ent_id_link = ''; |
506 | } |
507 | $defaultlink = $default_page . "?startMessage=$startMessage" |
02474e43 |
508 | . "&passed_id=$id&mailbox=$urlMailbox" |
509 | . '&ent_id='.$ent.$passed_ent_id_link; |
2e25760a |
510 | if ($where && $what) { |
02474e43 |
511 | $defaultlink .= '&where='. urlencode($where).'&what='.urlencode($what); |
2e25760a |
512 | } |
21dab2dc |
513 | |
3d8371be |
514 | /* This executes the attachment hook with a specific MIME-type. |
02474e43 |
515 | * If that doesn't have results, it tries if there's a rule |
516 | * for a more generic type. |
517 | */ |
3d8371be |
518 | $hookresults = do_hook("attachment $type0/$type1", $links, |
02474e43 |
519 | $startMessage, $id, $urlMailbox, $ent, $defaultlink, |
520 | $display_filename, $where, $what); |
3d8371be |
521 | if(count($hookresults[1]) <= 1) { |
522 | $hookresults = do_hook("attachment $type0/*", $links, |
02474e43 |
523 | $startMessage, $id, $urlMailbox, $ent, $defaultlink, |
524 | $display_filename, $where, $what); |
2e25760a |
525 | } |
451f74a2 |
526 | |
3d8371be |
527 | $links = $hookresults[1]; |
528 | $defaultlink = $hookresults[6]; |
77b88425 |
529 | |
3c621ba1 |
530 | $attachments .= '<tr><td>' . |
531 | '<a href="'.$defaultlink.'">'.decodeHeader($display_filename).'</a> </td>' . |
532 | '<td><small><b>' . show_readable_size($header->size) . |
533 | '</b> </small></td>' . |
534 | '<td><small>[ '.htmlspecialchars($type0).'/'.htmlspecialchars($type1).' ] </small></td>' . |
535 | '<td><small>'; |
f810c0b2 |
536 | $attachments .= '<b>' . $description . '</b>'; |
3c621ba1 |
537 | $attachments .= '</small></td><td><small> '; |
b74ba498 |
538 | |
3d8371be |
539 | $skipspaces = 1; |
540 | foreach ($links as $val) { |
541 | if ($skipspaces) { |
542 | $skipspaces = 0; |
2e25760a |
543 | } else { |
544 | $attachments .= ' | '; |
77b88425 |
545 | } |
ebeb8348 |
546 | $attachments .= '<a href="' . $val['href'] . '">' . (isset($val['text']) && !empty($val['text']) ? $val['text'] : '') . (isset($val['extra']) && !empty($val['extra']) ? $val['extra'] : '') . '</a>'; |
2e25760a |
547 | } |
3d8371be |
548 | unset($links); |
3c621ba1 |
549 | $attachments .= "</td></tr>\n"; |
2e25760a |
550 | } |
9ad17edb |
551 | $attachmentadd = do_hook_function('attachments_bottom',$attachments); |
552 | if ($attachmentadd != '') |
553 | $attachments = $attachmentadd; |
2e25760a |
554 | return $attachments; |
451f74a2 |
555 | } |
b74ba498 |
556 | |
7c7b74b3 |
557 | function sqimap_base64_decode(&$string) { |
7c0ec1d8 |
558 | |
b17a8968 |
559 | // Base64 encoded data goes in pairs of 4 bytes. To achieve on the |
7c0ec1d8 |
560 | // fly decoding (to reduce memory usage) you have to check if the |
561 | // data has incomplete pairs |
562 | |
b17a8968 |
563 | // Remove the noise in order to check if the 4 bytes pairs are complete |
7c0ec1d8 |
564 | $string = str_replace(array("\r\n","\n", "\r", " "),array('','','',''),$string); |
565 | |
42ce44f8 |
566 | $sStringRem = ''; |
7c0ec1d8 |
567 | $iMod = strlen($string) % 4; |
568 | if ($iMod) { |
569 | $sStringRem = substr($string,-$iMod); |
b17a8968 |
570 | // Check if $sStringRem contains padding characters |
7c0ec1d8 |
571 | if (substr($sStringRem,-1) != '=') { |
572 | $string = substr($string,0,-$iMod); |
573 | } else { |
574 | $sStringRem = ''; |
575 | } |
576 | } |
7c7b74b3 |
577 | $string = base64_decode($string); |
7c0ec1d8 |
578 | return $sStringRem; |
7c7b74b3 |
579 | } |
580 | |
7c0ec1d8 |
581 | |
3d8371be |
582 | /* This function decodes the body depending on the encoding type. */ |
451f74a2 |
583 | function decodeBody($body, $encoding) { |
3d8371be |
584 | global $show_html_default; |
83be314a |
585 | |
b583c3e8 |
586 | $body = str_replace("\r\n", "\n", $body); |
587 | $encoding = strtolower($encoding); |
3d8371be |
588 | |
5166f86a |
589 | $encoding_handler = do_hook_function('decode_body', $encoding); |
590 | |
591 | |
592 | // plugins get first shot at decoding the body |
593 | // |
594 | if (!empty($encoding_handler) && function_exists($encoding_handler)) { |
595 | $body = $encoding_handler('decode', $body); |
596 | |
597 | } else if ($encoding == 'quoted-printable' || |
3d8371be |
598 | $encoding == 'quoted_printable') { |
b583c3e8 |
599 | $body = quoted_printable_decode($body); |
3d8371be |
600 | |
b583c3e8 |
601 | while (ereg("=\n", $body)) { |
602 | $body = ereg_replace ("=\n", '', $body); |
603 | } |
3d8371be |
604 | |
b583c3e8 |
605 | } else if ($encoding == 'base64') { |
606 | $body = base64_decode($body); |
607 | } |
3d8371be |
608 | |
b583c3e8 |
609 | // All other encodings are returned raw. |
3d8371be |
610 | return $body; |
451f74a2 |
611 | } |
612 | |
9f7f68c3 |
613 | /** |
02474e43 |
614 | * Decodes headers |
615 | * |
616 | * This functions decode strings that is encoded according to |
617 | * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). |
618 | * Patched by Christian Schmidt <christian@ostenfeld.dk> 23/03/2002 |
619 | * |
620 | * @param string $string header string that has to be made readable |
621 | * @param boolean $utfencode change message in order to be readable on user's charset. defaults to true |
622 | * @param boolean $htmlsave preserve spaces and sanitize html special characters. defaults to true |
623 | * @param boolean $decide decide if string can be utfencoded. defaults to false |
624 | * @return string decoded header string |
625 | */ |
9f7f68c3 |
626 | function decodeHeader ($string, $utfencode=true,$htmlsave=true,$decide=false) { |
d6f584fc |
627 | global $languages, $squirrelmail_language,$default_charset; |
79e07c7e |
628 | if (is_array($string)) { |
629 | $string = implode("\n", $string); |
630 | } |
da2415c1 |
631 | |
10dec454 |
632 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
33a55f5a |
633 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader')) { |
634 | $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader', $string); |
08b7f7cc |
635 | // Do we need to return at this point? |
636 | // return $string; |
83be314a |
637 | } |
79e07c7e |
638 | $i = 0; |
08b7f7cc |
639 | $iLastMatch = -2; |
db65b6b0 |
640 | $encoded = true; |
0a06275a |
641 | |
098ea084 |
642 | $aString = explode(' ',$string); |
08b7f7cc |
643 | $ret = ''; |
098ea084 |
644 | foreach ($aString as $chunk) { |
358a78a1 |
645 | if ($encoded && $chunk === '') { |
08b7f7cc |
646 | continue; |
358a78a1 |
647 | } elseif ($chunk === '') { |
08b7f7cc |
648 | $ret .= ' '; |
649 | continue; |
650 | } |
098ea084 |
651 | $encoded = false; |
08b7f7cc |
652 | /* if encoded words are not separated by a linear-space-white we still catch them */ |
653 | $j = $i-1; |
7e6ca3e8 |
654 | |
08b7f7cc |
655 | while ($match = preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=(.*)$/Ui',$chunk,$res)) { |
656 | /* if the last chunk isn't an encoded string then put back the space, otherwise don't */ |
657 | if ($iLastMatch !== $j) { |
658 | if ($htmlsave) { |
9f7f68c3 |
659 | $ret .= ' '; |
08b7f7cc |
660 | } else { |
661 | $ret .= ' '; |
662 | } |
663 | } |
664 | $iLastMatch = $i; |
665 | $j = $i; |
cb718de0 |
666 | if ($htmlsave) { |
667 | $ret .= htmlspecialchars($res[1]); |
668 | } else { |
669 | $ret .= $res[1]; |
670 | } |
098ea084 |
671 | $encoding = ucfirst($res[3]); |
d6f584fc |
672 | |
673 | /* decide about valid decoding */ |
674 | if ($decide && is_conversion_safe($res[2])) { |
02474e43 |
675 | $utfencode=true; |
676 | $can_be_encoded=true; |
d6f584fc |
677 | } else { |
02474e43 |
678 | $can_be_encoded=false; |
d6f584fc |
679 | } |
098ea084 |
680 | switch ($encoding) |
681 | { |
682 | case 'B': |
683 | $replace = base64_decode($res[4]); |
fab65ca9 |
684 | if ($utfencode) { |
685 | if ($can_be_encoded) { |
686 | /* convert string to different charset, |
02474e43 |
687 | * if functions asks for it (usually in compose) |
688 | */ |
fab65ca9 |
689 | $ret .= charset_convert($res[2],$replace,$default_charset); |
690 | } else { |
691 | // convert string to html codes in order to display it |
692 | $ret .= charset_decode($res[2],$replace); |
693 | } |
d6f584fc |
694 | } else { |
fab65ca9 |
695 | if ($htmlsave) { |
696 | $replace = htmlspecialchars($replace); |
697 | } |
698 | $ret.= $replace; |
d6f584fc |
699 | } |
098ea084 |
700 | break; |
701 | case 'Q': |
098ea084 |
702 | $replace = str_replace('_', ' ', $res[4]); |
da2415c1 |
703 | $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))', |
79e07c7e |
704 | $replace); |
098ea084 |
705 | if ($utfencode) { |
02474e43 |
706 | if ($can_be_encoded) { |
d6f584fc |
707 | /* convert string to different charset, |
02474e43 |
708 | * if functions asks for it (usually in compose) |
709 | */ |
d6f584fc |
710 | $replace = charset_convert($res[2], $replace,$default_charset); |
02474e43 |
711 | } else { |
d6f584fc |
712 | // convert string to html codes in order to display it |
098ea084 |
713 | $replace = charset_decode($res[2], $replace); |
02474e43 |
714 | } |
098ea084 |
715 | } else { |
716 | if ($htmlsave) { |
c96c32f4 |
717 | $replace = htmlspecialchars($replace); |
098ea084 |
718 | } |
719 | } |
08b7f7cc |
720 | $ret .= $replace; |
098ea084 |
721 | break; |
722 | default: |
723 | break; |
79e07c7e |
724 | } |
098ea084 |
725 | $chunk = $res[5]; |
726 | $encoded = true; |
08b7f7cc |
727 | } |
728 | if (!$encoded) { |
729 | if ($htmlsave) { |
9f7f68c3 |
730 | $ret .= ' '; |
08b7f7cc |
731 | } else { |
732 | $ret .= ' '; |
da2415c1 |
733 | } |
08b7f7cc |
734 | } |
dc3d13a7 |
735 | |
736 | if (!$encoded && $htmlsave) { |
737 | $ret .= htmlspecialchars($chunk); |
738 | } else { |
739 | $ret .= $chunk; |
740 | } |
098ea084 |
741 | ++$i; |
742 | } |
fd81e884 |
743 | /* remove the first added space */ |
744 | if ($ret) { |
745 | if ($htmlsave) { |
9f7f68c3 |
746 | $ret = substr($ret,5); |
fd81e884 |
747 | } else { |
748 | $ret = substr($ret,1); |
749 | } |
750 | } |
da2415c1 |
751 | |
08b7f7cc |
752 | return $ret; |
451f74a2 |
753 | } |
754 | |
9f7f68c3 |
755 | /** |
02474e43 |
756 | * Encodes header as quoted-printable |
757 | * |
758 | * Encode a string according to RFC 1522 for use in headers if it |
759 | * contains 8-bit characters or anything that looks like it should |
760 | * be encoded. |
761 | * |
762 | * @param string $string header string, that has to be encoded |
763 | * @return string quoted-printable encoded string |
764 | */ |
451f74a2 |
765 | function encodeHeader ($string) { |
6fbd125b |
766 | global $default_charset, $languages, $squirrelmail_language; |
83be314a |
767 | |
10dec454 |
768 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
33a55f5a |
769 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader')) { |
770 | return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader', $string); |
83be314a |
771 | } |
793cc001 |
772 | |
451f74a2 |
773 | // Encode only if the string contains 8-bit characters or =? |
3d8371be |
774 | $j = strlen($string); |
098ea084 |
775 | $max_l = 75 - strlen($default_charset) - 7; |
776 | $aRet = array(); |
451f74a2 |
777 | $ret = ''; |
c96c32f4 |
778 | $iEncStart = $enc_init = false; |
0d53f0f9 |
779 | $cur_l = $iOffset = 0; |
3d8371be |
780 | for($i = 0; $i < $j; ++$i) { |
c96c32f4 |
781 | switch($string{$i}) |
782 | { |
783 | case '=': |
784 | case '<': |
785 | case '>': |
786 | case ',': |
787 | case '?': |
788 | case '_': |
789 | if ($iEncStart === false) { |
790 | $iEncStart = $i; |
791 | } |
792 | $cur_l+=3; |
793 | if ($cur_l > ($max_l-2)) { |
08b7f7cc |
794 | /* if there is an stringpart that doesn't need encoding, add it */ |
c96c32f4 |
795 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
796 | $aRet[] = "=?$default_charset?Q?$ret?="; |
797 | $iOffset = $i; |
798 | $cur_l = 0; |
799 | $ret = ''; |
800 | $iEncStart = false; |
801 | } else { |
802 | $ret .= sprintf("=%02X",ord($string{$i})); |
803 | } |
804 | break; |
805 | case '(': |
806 | case ')': |
807 | if ($iEncStart !== false) { |
08b7f7cc |
808 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
c96c32f4 |
809 | $aRet[] = "=?$default_charset?Q?$ret?="; |
810 | $iOffset = $i; |
811 | $cur_l = 0; |
812 | $ret = ''; |
813 | $iEncStart = false; |
814 | } |
815 | break; |
816 | case ' ': |
817 | if ($iEncStart !== false) { |
098ea084 |
818 | $cur_l++; |
819 | if ($cur_l > $max_l) { |
08b7f7cc |
820 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
c96c32f4 |
821 | $aRet[] = "=?$default_charset?Q?$ret?="; |
822 | $iOffset = $i; |
823 | $cur_l = 0; |
824 | $ret = ''; |
825 | $iEncStart = false; |
08b7f7cc |
826 | } else { |
c96c32f4 |
827 | $ret .= '_'; |
828 | } |
829 | } |
830 | break; |
831 | default: |
832 | $k = ord($string{$i}); |
833 | if ($k > 126) { |
834 | if ($iEncStart === false) { |
325978ac |
835 | // do not start encoding in the middle of a string, also take the rest of the word. |
836 | $sLeadString = substr($string,0,$i); |
837 | $aLeadString = explode(' ',$sLeadString); |
da2415c1 |
838 | $sToBeEncoded = array_pop($aLeadString); |
325978ac |
839 | $iEncStart = $i - strlen($sToBeEncoded); |
840 | $ret .= $sToBeEncoded; |
841 | $cur_l += strlen($sToBeEncoded); |
c96c32f4 |
842 | } |
843 | $cur_l += 3; |
08b7f7cc |
844 | /* first we add the encoded string that reached it's max size */ |
c96c32f4 |
845 | if ($cur_l > ($max_l-2)) { |
08b7f7cc |
846 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
847 | $aRet[] = "=?$default_charset?Q?$ret?= "; /* the next part is also encoded => separate by space */ |
c96c32f4 |
848 | $cur_l = 3; |
849 | $ret = ''; |
850 | $iOffset = $i; |
08b7f7cc |
851 | $iEncStart = $i; |
c96c32f4 |
852 | } |
08b7f7cc |
853 | $enc_init = true; |
c96c32f4 |
854 | $ret .= sprintf("=%02X", $k); |
855 | } else { |
856 | if ($iEncStart !== false) { |
098ea084 |
857 | $cur_l++; |
858 | if ($cur_l > $max_l) { |
08b7f7cc |
859 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
c96c32f4 |
860 | $aRet[] = "=?$default_charset?Q?$ret?="; |
861 | $iEncStart = false; |
862 | $iOffset = $i; |
863 | $cur_l = 0; |
098ea084 |
864 | $ret = ''; |
08b7f7cc |
865 | } else { |
c96c32f4 |
866 | $ret .= $string{$i}; |
867 | } |
3d8371be |
868 | } |
c96c32f4 |
869 | } |
870 | break; |
f7b3ba37 |
871 | } |
451f74a2 |
872 | } |
793cc001 |
873 | |
c96c32f4 |
874 | if ($enc_init) { |
875 | if ($iEncStart !== false) { |
876 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
877 | $aRet[] = "=?$default_charset?Q?$ret?="; |
878 | } else { |
879 | $aRet[] = substr($string,$iOffset); |
880 | } |
881 | $string = implode('',$aRet); |
451f74a2 |
882 | } |
3d8371be |
883 | return $string; |
451f74a2 |
884 | } |
b74ba498 |
885 | |
691a2d25 |
886 | /* This function trys to locate the entity_id of a specific mime element */ |
3d8371be |
887 | function find_ent_id($id, $message) { |
a171b359 |
888 | for ($i = 0, $ret = ''; $ret == '' && $i < count($message->entities); $i++) { |
889 | if ($message->entities[$i]->header->type0 == 'multipart') { |
3d8371be |
890 | $ret = find_ent_id($id, $message->entities[$i]); |
451f74a2 |
891 | } else { |
3d8371be |
892 | if (strcasecmp($message->entities[$i]->header->id, $id) == 0) { |
d8cffbab |
893 | // if (sq_check_save_extension($message->entities[$i])) { |
a171b359 |
894 | return $message->entities[$i]->entity_id; |
da2415c1 |
895 | // } |
c8f5f606 |
896 | } elseif (!empty($message->entities[$i]->header->parameters['name'])) { |
897 | /** |
898 | * This is part of a fix for Outlook Express 6.x generating |
899 | * cid URLs without creating content-id headers |
900 | * @@JA - 20050207 |
901 | */ |
902 | if (strcasecmp($message->entities[$i]->header->parameters['name'], $id) == 0) { |
903 | return $message->entities[$i]->entity_id; |
904 | } |
3d8371be |
905 | } |
a3daaaf3 |
906 | } |
451f74a2 |
907 | } |
3d8371be |
908 | return $ret; |
451f74a2 |
909 | } |
a3daaaf3 |
910 | |
e5e9381a |
911 | function sq_check_save_extension($message) { |
912 | $filename = $message->getFilename(); |
913 | $ext = substr($filename, strrpos($filename,'.')+1); |
914 | $save_extensions = array('jpg','jpeg','gif','png','bmp'); |
3d8371be |
915 | return in_array($ext, $save_extensions); |
e5e9381a |
916 | } |
917 | |
918 | |
691a2d25 |
919 | /** |
02474e43 |
920 | ** HTMLFILTER ROUTINES |
921 | */ |
451f74a2 |
922 | |
2dd879b8 |
923 | /** |
02474e43 |
924 | * This function is more or less a wrapper around stripslashes. Apparently |
925 | * Explorer is stupid enough to just remove the backslashes and then |
926 | * execute the content of the attribute as if nothing happened. |
927 | * Who does that? |
928 | * |
929 | * @param attvalue The value of the attribute |
930 | * @return attvalue The value of the attribute stripslashed. |
931 | */ |
2dd879b8 |
932 | function sq_unbackslash($attvalue){ |
933 | /** |
02474e43 |
934 | * Remove any backslashes. See if there are any first. |
935 | */ |
91220ed1 |
936 | |
2dd879b8 |
937 | if (strstr($attvalue, '\\') !== false){ |
938 | $attvalue = stripslashes($attvalue); |
939 | } |
940 | return $attvalue; |
941 | } |
942 | |
943 | /** |
02474e43 |
944 | * Kill any tabs, newlines, or carriage returns. Our friends the |
945 | * makers of the browser with 95% market value decided that it'd |
946 | * be funny to make "java[tab]script" be just as good as "javascript". |
947 | * |
948 | * @param attvalue The attribute value before extraneous spaces removed. |
949 | * @return attvalue The attribute value after extraneous spaces removed. |
950 | */ |
2dd879b8 |
951 | function sq_unspace($attvalue){ |
952 | if (strcspn($attvalue, "\t\r\n") != strlen($attvalue)){ |
953 | $attvalue = str_replace(Array("\t", "\r", "\n"), Array('', '', ''), |
954 | $attvalue); |
955 | } |
956 | return $attvalue; |
957 | } |
958 | |
691a2d25 |
959 | /** |
02474e43 |
960 | * This function returns the final tag out of the tag name, an array |
961 | * of attributes, and the type of the tag. This function is called by |
962 | * sq_sanitize internally. |
963 | * |
964 | * @param $tagname the name of the tag. |
965 | * @param $attary the array of attributes and their values |
966 | * @param $tagtype The type of the tag (see in comments). |
967 | * @return a string with the final tag representation. |
968 | */ |
691a2d25 |
969 | function sq_tagprint($tagname, $attary, $tagtype){ |
b583c3e8 |
970 | $me = 'sq_tagprint'; |
3d8371be |
971 | |
691a2d25 |
972 | if ($tagtype == 2){ |
973 | $fulltag = '</' . $tagname . '>'; |
974 | } else { |
975 | $fulltag = '<' . $tagname; |
976 | if (is_array($attary) && sizeof($attary)){ |
977 | $atts = Array(); |
978 | while (list($attname, $attvalue) = each($attary)){ |
979 | array_push($atts, "$attname=$attvalue"); |
980 | } |
981 | $fulltag .= ' ' . join(" ", $atts); |
982 | } |
983 | if ($tagtype == 3){ |
b583c3e8 |
984 | $fulltag .= ' /'; |
691a2d25 |
985 | } |
b583c3e8 |
986 | $fulltag .= '>'; |
451f74a2 |
987 | } |
691a2d25 |
988 | return $fulltag; |
451f74a2 |
989 | } |
a3daaaf3 |
990 | |
691a2d25 |
991 | /** |
02474e43 |
992 | * A small helper function to use with array_walk. Modifies a by-ref |
993 | * value and makes it lowercase. |
994 | * |
995 | * @param $val a value passed by-ref. |
996 | * @return void since it modifies a by-ref value. |
997 | */ |
691a2d25 |
998 | function sq_casenormalize(&$val){ |
999 | $val = strtolower($val); |
1000 | } |
451f74a2 |
1001 | |
691a2d25 |
1002 | /** |
02474e43 |
1003 | * This function skips any whitespace from the current position within |
1004 | * a string and to the next non-whitespace value. |
1005 | * |
1006 | * @param $body the string |
1007 | * @param $offset the offset within the string where we should start |
1008 | * looking for the next non-whitespace character. |
1009 | * @return the location within the $body where the next |
1010 | * non-whitespace char is located. |
1011 | */ |
691a2d25 |
1012 | function sq_skipspace($body, $offset){ |
b583c3e8 |
1013 | $me = 'sq_skipspace'; |
3d8371be |
1014 | preg_match('/^(\s*)/s', substr($body, $offset), $matches); |
691a2d25 |
1015 | if (sizeof($matches{1})){ |
1016 | $count = strlen($matches{1}); |
1017 | $offset += $count; |
451f74a2 |
1018 | } |
691a2d25 |
1019 | return $offset; |
451f74a2 |
1020 | } |
a3daaaf3 |
1021 | |
691a2d25 |
1022 | /** |
02474e43 |
1023 | * This function looks for the next character within a string. It's |
1024 | * really just a glorified "strpos", except it catches if failures |
1025 | * nicely. |
1026 | * |
1027 | * @param $body The string to look for needle in. |
1028 | * @param $offset Start looking from this position. |
1029 | * @param $needle The character/string to look for. |
1030 | * @return location of the next occurance of the needle, or |
1031 | * strlen($body) if needle wasn't found. |
1032 | */ |
691a2d25 |
1033 | function sq_findnxstr($body, $offset, $needle){ |
3d8371be |
1034 | $me = 'sq_findnxstr'; |
691a2d25 |
1035 | $pos = strpos($body, $needle, $offset); |
1036 | if ($pos === FALSE){ |
1037 | $pos = strlen($body); |
451f74a2 |
1038 | } |
691a2d25 |
1039 | return $pos; |
451f74a2 |
1040 | } |
a3daaaf3 |
1041 | |
691a2d25 |
1042 | /** |
02474e43 |
1043 | * This function takes a PCRE-style regexp and tries to match it |
1044 | * within the string. |
1045 | * |
1046 | * @param $body The string to look for needle in. |
1047 | * @param $offset Start looking from here. |
1048 | * @param $reg A PCRE-style regex to match. |
1049 | * @return Returns a false if no matches found, or an array |
1050 | * with the following members: |
1051 | * - integer with the location of the match within $body |
1052 | * - string with whatever content between offset and the match |
1053 | * - string with whatever it is we matched |
1054 | */ |
691a2d25 |
1055 | function sq_findnxreg($body, $offset, $reg){ |
b583c3e8 |
1056 | $me = 'sq_findnxreg'; |
691a2d25 |
1057 | $matches = Array(); |
1058 | $retarr = Array(); |
7d06541f |
1059 | preg_match("%^(.*?)($reg)%si", substr($body, $offset), $matches); |
1060 | if (!isset($matches{0}) || !$matches{0}){ |
691a2d25 |
1061 | $retarr = false; |
1062 | } else { |
1063 | $retarr{0} = $offset + strlen($matches{1}); |
1064 | $retarr{1} = $matches{1}; |
1065 | $retarr{2} = $matches{2}; |
1066 | } |
1067 | return $retarr; |
1068 | } |
a3daaaf3 |
1069 | |
691a2d25 |
1070 | /** |
02474e43 |
1071 | * This function looks for the next tag. |
1072 | * |
1073 | * @param $body String where to look for the next tag. |
1074 | * @param $offset Start looking from here. |
1075 | * @return false if no more tags exist in the body, or |
1076 | * an array with the following members: |
1077 | * - string with the name of the tag |
1078 | * - array with attributes and their values |
1079 | * - integer with tag type (1, 2, or 3) |
1080 | * - integer where the tag starts (starting "<") |
1081 | * - integer where the tag ends (ending ">") |
1082 | * first three members will be false, if the tag is invalid. |
1083 | */ |
691a2d25 |
1084 | function sq_getnxtag($body, $offset){ |
b583c3e8 |
1085 | $me = 'sq_getnxtag'; |
691a2d25 |
1086 | if ($offset > strlen($body)){ |
1087 | return false; |
1088 | } |
1089 | $lt = sq_findnxstr($body, $offset, "<"); |
1090 | if ($lt == strlen($body)){ |
1091 | return false; |
1092 | } |
1093 | /** |
02474e43 |
1094 | * We are here: |
1095 | * blah blah <tag attribute="value"> |
1096 | * \---------^ |
1097 | */ |
691a2d25 |
1098 | $pos = sq_skipspace($body, $lt+1); |
1099 | if ($pos >= strlen($body)){ |
1100 | return Array(false, false, false, $lt, strlen($body)); |
1101 | } |
1102 | /** |
02474e43 |
1103 | * There are 3 kinds of tags: |
1104 | * 1. Opening tag, e.g.: |
1105 | * <a href="blah"> |
1106 | * 2. Closing tag, e.g.: |
1107 | * </a> |
1108 | * 3. XHTML-style content-less tag, e.g.: |
1109 | * <img src="blah" /> |
1110 | */ |
691a2d25 |
1111 | $tagtype = false; |
1112 | switch (substr($body, $pos, 1)){ |
3d8371be |
1113 | case '/': |
1114 | $tagtype = 2; |
1115 | $pos++; |
1116 | break; |
1117 | case '!': |
1118 | /** |
02474e43 |
1119 | * A comment or an SGML declaration. |
1120 | */ |
3d8371be |
1121 | if (substr($body, $pos+1, 2) == "--"){ |
1122 | $gt = strpos($body, "-->", $pos); |
1123 | if ($gt === false){ |
1124 | $gt = strlen($body); |
1125 | } else { |
1126 | $gt += 2; |
1127 | } |
1128 | return Array(false, false, false, $lt, $gt); |
bb8d0799 |
1129 | } else { |
3d8371be |
1130 | $gt = sq_findnxstr($body, $pos, ">"); |
1131 | return Array(false, false, false, $lt, $gt); |
1132 | } |
1133 | break; |
1134 | default: |
1135 | /** |
02474e43 |
1136 | * Assume tagtype 1 for now. If it's type 3, we'll switch values |
1137 | * later. |
1138 | */ |
3d8371be |
1139 | $tagtype = 1; |
1140 | break; |
691a2d25 |
1141 | } |
a3daaaf3 |
1142 | |
691a2d25 |
1143 | $tagname = ''; |
1144 | /** |
02474e43 |
1145 | * Look for next [\W-_], which will indicate the end of the tag name. |
1146 | */ |
691a2d25 |
1147 | $regary = sq_findnxreg($body, $pos, "[^\w\-_]"); |
1148 | if ($regary == false){ |
1149 | return Array(false, false, false, $lt, strlen($body)); |
1150 | } |
1151 | list($pos, $tagname, $match) = $regary; |
1152 | $tagname = strtolower($tagname); |
1153 | |
1154 | /** |
02474e43 |
1155 | * $match can be either of these: |
1156 | * '>' indicating the end of the tag entirely. |
1157 | * '\s' indicating the end of the tag name. |
1158 | * '/' indicating that this is type-3 xhtml tag. |
1159 | * |
1160 | * Whatever else we find there indicates an invalid tag. |
1161 | */ |
691a2d25 |
1162 | switch ($match){ |
3d8371be |
1163 | case '/': |
691a2d25 |
1164 | /** |
02474e43 |
1165 | * This is an xhtml-style tag with a closing / at the |
1166 | * end, like so: <img src="blah" />. Check if it's followed |
1167 | * by the closing bracket. If not, then this tag is invalid |
1168 | */ |
3d8371be |
1169 | if (substr($body, $pos, 2) == "/>"){ |
1170 | $pos++; |
1171 | $tagtype = 3; |
1172 | } else { |
1173 | $gt = sq_findnxstr($body, $pos, ">"); |
1174 | $retary = Array(false, false, false, $lt, $gt); |
1175 | return $retary; |
1176 | } |
1177 | case '>': |
1178 | return Array($tagname, false, $tagtype, $lt, $pos); |
1179 | break; |
1180 | default: |
1181 | /** |
02474e43 |
1182 | * Check if it's whitespace |
1183 | */ |
3d8371be |
1184 | if (!preg_match('/\s/', $match)){ |
1185 | /** |
02474e43 |
1186 | * This is an invalid tag! Look for the next closing ">". |
1187 | */ |
7d06541f |
1188 | $gt = sq_findnxstr($body, $lt, ">"); |
3d8371be |
1189 | return Array(false, false, false, $lt, $gt); |
1190 | } |
1191 | break; |
691a2d25 |
1192 | } |
3d8371be |
1193 | |
691a2d25 |
1194 | /** |
02474e43 |
1195 | * At this point we're here: |
1196 | * <tagname attribute='blah'> |
1197 | * \-------^ |
1198 | * |
1199 | * At this point we loop in order to find all attributes. |
1200 | */ |
691a2d25 |
1201 | $attname = ''; |
691a2d25 |
1202 | $attary = Array(); |
1203 | |
1204 | while ($pos <= strlen($body)){ |
1205 | $pos = sq_skipspace($body, $pos); |
1206 | if ($pos == strlen($body)){ |
1207 | /** |
02474e43 |
1208 | * Non-closed tag. |
1209 | */ |
691a2d25 |
1210 | return Array(false, false, false, $lt, $pos); |
1211 | } |
1212 | /** |
02474e43 |
1213 | * See if we arrived at a ">" or "/>", which means that we reached |
1214 | * the end of the tag. |
1215 | */ |
691a2d25 |
1216 | $matches = Array(); |
164800ad |
1217 | if (preg_match("%^(\s*)(>|/>)%s", substr($body, $pos), $matches)) { |
c828931c |
1218 | /** |
02474e43 |
1219 | * Yep. So we did. |
1220 | */ |
c828931c |
1221 | $pos += strlen($matches{1}); |
1222 | if ($matches{2} == "/>"){ |
1223 | $tagtype = 3; |
1224 | $pos++; |
1225 | } |
1226 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
1227 | } |
a3daaaf3 |
1228 | |
cca46357 |
1229 | /** |
02474e43 |
1230 | * There are several types of attributes, with optional |
1231 | * [:space:] between members. |
1232 | * Type 1: |
1233 | * attrname[:space:]=[:space:]'CDATA' |
1234 | * Type 2: |
1235 | * attrname[:space:]=[:space:]"CDATA" |
1236 | * Type 3: |
1237 | * attr[:space:]=[:space:]CDATA |
1238 | * Type 4: |
1239 | * attrname |
1240 | * |
1241 | * We leave types 1 and 2 the same, type 3 we check for |
1242 | * '"' and convert to """ if needed, then wrap in |
1243 | * double quotes. Type 4 we convert into: |
1244 | * attrname="yes". |
1245 | */ |
3f7c623f |
1246 | $regary = sq_findnxreg($body, $pos, "[^:\w\-_]"); |
691a2d25 |
1247 | if ($regary == false){ |
1248 | /** |
02474e43 |
1249 | * Looks like body ended before the end of tag. |
1250 | */ |
691a2d25 |
1251 | return Array(false, false, false, $lt, strlen($body)); |
cca46357 |
1252 | } |
691a2d25 |
1253 | list($pos, $attname, $match) = $regary; |
1254 | $attname = strtolower($attname); |
1255 | /** |
02474e43 |
1256 | * We arrived at the end of attribute name. Several things possible |
1257 | * here: |
1258 | * '>' means the end of the tag and this is attribute type 4 |
1259 | * '/' if followed by '>' means the same thing as above |
1260 | * '\s' means a lot of things -- look what it's followed by. |
1261 | * anything else means the attribute is invalid. |
1262 | */ |
691a2d25 |
1263 | switch($match){ |
3d8371be |
1264 | case '/': |
691a2d25 |
1265 | /** |
02474e43 |
1266 | * This is an xhtml-style tag with a closing / at the |
1267 | * end, like so: <img src="blah" />. Check if it's followed |
1268 | * by the closing bracket. If not, then this tag is invalid |
1269 | */ |
3d8371be |
1270 | if (substr($body, $pos, 2) == "/>"){ |
691a2d25 |
1271 | $pos++; |
3d8371be |
1272 | $tagtype = 3; |
691a2d25 |
1273 | } else { |
3d8371be |
1274 | $gt = sq_findnxstr($body, $pos, ">"); |
1275 | $retary = Array(false, false, false, $lt, $gt); |
1276 | return $retary; |
1277 | } |
1278 | case '>': |
1279 | $attary{$attname} = '"yes"'; |
1280 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
1281 | break; |
1282 | default: |
1283 | /** |
02474e43 |
1284 | * Skip whitespace and see what we arrive at. |
1285 | */ |
3d8371be |
1286 | $pos = sq_skipspace($body, $pos); |
1287 | $char = substr($body, $pos, 1); |
1288 | /** |
02474e43 |
1289 | * Two things are valid here: |
1290 | * '=' means this is attribute type 1 2 or 3. |
1291 | * \w means this was attribute type 4. |
1292 | * anything else we ignore and re-loop. End of tag and |
1293 | * invalid stuff will be caught by our checks at the beginning |
1294 | * of the loop. |
1295 | */ |
3d8371be |
1296 | if ($char == "="){ |
1297 | $pos++; |
1298 | $pos = sq_skipspace($body, $pos); |
691a2d25 |
1299 | /** |
02474e43 |
1300 | * Here are 3 possibilities: |
1301 | * "'" attribute type 1 |
1302 | * '"' attribute type 2 |
1303 | * everything else is the content of tag type 3 |
1304 | */ |
3d8371be |
1305 | $quot = substr($body, $pos, 1); |
1306 | if ($quot == "'"){ |
1307 | $regary = sq_findnxreg($body, $pos+1, "\'"); |
1308 | if ($regary == false){ |
1309 | return Array(false, false, false, $lt, strlen($body)); |
1310 | } |
1311 | list($pos, $attval, $match) = $regary; |
1312 | $pos++; |
1313 | $attary{$attname} = "'" . $attval . "'"; |
1314 | } else if ($quot == '"'){ |
1315 | $regary = sq_findnxreg($body, $pos+1, '\"'); |
1316 | if ($regary == false){ |
1317 | return Array(false, false, false, $lt, strlen($body)); |
1318 | } |
1319 | list($pos, $attval, $match) = $regary; |
1320 | $pos++; |
1321 | $attary{$attname} = '"' . $attval . '"'; |
1322 | } else { |
1323 | /** |
02474e43 |
1324 | * These are hateful. Look for \s, or >. |
1325 | */ |
3d8371be |
1326 | $regary = sq_findnxreg($body, $pos, "[\s>]"); |
1327 | if ($regary == false){ |
1328 | return Array(false, false, false, $lt, strlen($body)); |
1329 | } |
1330 | list($pos, $attval, $match) = $regary; |
1331 | /** |
02474e43 |
1332 | * If it's ">" it will be caught at the top. |
1333 | */ |
3d8371be |
1334 | $attval = preg_replace("/\"/s", """, $attval); |
1335 | $attary{$attname} = '"' . $attval . '"'; |
7e235a1a |
1336 | } |
3d8371be |
1337 | } else if (preg_match("|[\w/>]|", $char)) { |
691a2d25 |
1338 | /** |
02474e43 |
1339 | * That was attribute type 4. |
1340 | */ |
3d8371be |
1341 | $attary{$attname} = '"yes"'; |
1342 | } else { |
1343 | /** |
02474e43 |
1344 | * An illegal character. Find next '>' and return. |
1345 | */ |
3d8371be |
1346 | $gt = sq_findnxstr($body, $pos, ">"); |
1347 | return Array(false, false, false, $lt, $gt); |
451f74a2 |
1348 | } |
3d8371be |
1349 | break; |
691a2d25 |
1350 | } |
1351 | } |
1352 | /** |
02474e43 |
1353 | * The fact that we got here indicates that the tag end was never |
1354 | * found. Return invalid tag indication so it gets stripped. |
1355 | */ |
691a2d25 |
1356 | return Array(false, false, false, $lt, strlen($body)); |
1357 | } |
1358 | |
1359 | /** |
02474e43 |
1360 | * This function checks attribute values for entity-encoded values |
1361 | * and returns them translated into 8-bit strings so we can run |
1362 | * checks on them. |
1363 | * |
1364 | * @param $attvalue A string to run entity check against. |
1365 | * @return Translated value. |
1366 | */ |
91220ed1 |
1367 | |
691a2d25 |
1368 | function sq_deent($attvalue){ |
b583c3e8 |
1369 | $me = 'sq_deent'; |
691a2d25 |
1370 | /** |
02474e43 |
1371 | * See if we have to run the checks first. All entities must start |
1372 | * with "&". |
1373 | */ |
91220ed1 |
1374 | if (strpos($attvalue, '&') === false){ |
691a2d25 |
1375 | return $attvalue; |
1376 | } |
1377 | /** |
02474e43 |
1378 | * Check named entities first. |
1379 | */ |
691a2d25 |
1380 | $trans = get_html_translation_table(HTML_ENTITIES); |
1381 | /** |
02474e43 |
1382 | * Leave " in, as it can mess us up. |
1383 | */ |
691a2d25 |
1384 | $trans = array_flip($trans); |
91220ed1 |
1385 | unset($trans{'"'}); |
691a2d25 |
1386 | while (list($ent, $val) = each($trans)){ |
91220ed1 |
1387 | $attvalue = preg_replace('/' . $ent . '*/si', $val, $attvalue); |
691a2d25 |
1388 | } |
1389 | /** |
02474e43 |
1390 | * Now translate numbered entities from 1 to 255 if needed. |
1391 | */ |
91220ed1 |
1392 | if (strpos($attvalue, '#') !== false){ |
691a2d25 |
1393 | $omit = Array(34, 39); |
91220ed1 |
1394 | for ($asc = 256; $asc >= 0; $asc--){ |
691a2d25 |
1395 | if (!in_array($asc, $omit)){ |
1396 | $chr = chr($asc); |
91220ed1 |
1397 | $octrule = '/\�*' . $asc . ';*/si'; |
1398 | $hexrule = '/\�*' . dechex($asc) . ';*/si'; |
1399 | $attvalue = preg_replace($octrule, $chr, $attvalue); |
1400 | $attvalue = preg_replace($hexrule, $chr, $attvalue); |
a3daaaf3 |
1401 | } |
691a2d25 |
1402 | } |
1403 | } |
1404 | return $attvalue; |
1405 | } |
1406 | |
1407 | /** |
02474e43 |
1408 | * This function runs various checks against the attributes. |
1409 | * |
1410 | * @param $tagname String with the name of the tag. |
1411 | * @param $attary Array with all tag attributes. |
1412 | * @param $rm_attnames See description for sq_sanitize |
1413 | * @param $bad_attvals See description for sq_sanitize |
1414 | * @param $add_attr_to_tag See description for sq_sanitize |
1415 | * @param $message message object |
1416 | * @param $id message id |
1417 | * @return Array with modified attributes. |
1418 | */ |
da2415c1 |
1419 | function sq_fixatts($tagname, |
1420 | $attary, |
691a2d25 |
1421 | $rm_attnames, |
1422 | $bad_attvals, |
1423 | $add_attr_to_tag, |
1424 | $message, |
b3af12ef |
1425 | $id, |
3d8371be |
1426 | $mailbox |
691a2d25 |
1427 | ){ |
b583c3e8 |
1428 | $me = 'sq_fixatts'; |
691a2d25 |
1429 | while (list($attname, $attvalue) = each($attary)){ |
1430 | /** |
02474e43 |
1431 | * See if this attribute should be removed. |
1432 | */ |
691a2d25 |
1433 | foreach ($rm_attnames as $matchtag=>$matchattrs){ |
1434 | if (preg_match($matchtag, $tagname)){ |
1435 | foreach ($matchattrs as $matchattr){ |
1436 | if (preg_match($matchattr, $attname)){ |
1437 | unset($attary{$attname}); |
1438 | continue; |
1439 | } |
451f74a2 |
1440 | } |
451f74a2 |
1441 | } |
691a2d25 |
1442 | } |
1443 | /** |
02474e43 |
1444 | * Remove any backslashes, entities, and extraneous whitespace. |
1445 | */ |
2dd879b8 |
1446 | $attvalue = sq_unbackslash($attvalue); |
691a2d25 |
1447 | $attvalue = sq_deent($attvalue); |
2dd879b8 |
1448 | $attvalue = sq_unspace($attvalue); |
691a2d25 |
1449 | |
af861a34 |
1450 | /** |
02474e43 |
1451 | * Remove \r \n \t \0 " " "\\" |
1452 | */ |
8d863f64 |
1453 | $attvalue = str_replace(Array("\r", "\n", "\t", "\0", " ", "\\"), |
af861a34 |
1454 | Array('', '','','','',''), $attvalue); |
1455 | |
691a2d25 |
1456 | /** |
02474e43 |
1457 | * Now let's run checks on the attvalues. |
1458 | * I don't expect anyone to comprehend this. If you do, |
1459 | * get in touch with me so I can drive to where you live and |
1460 | * shake your hand personally. :) |
1461 | */ |
691a2d25 |
1462 | foreach ($bad_attvals as $matchtag=>$matchattrs){ |
1463 | if (preg_match($matchtag, $tagname)){ |
1464 | foreach ($matchattrs as $matchattr=>$valary){ |
1465 | if (preg_match($matchattr, $attname)){ |
1466 | /** |
02474e43 |
1467 | * There are two arrays in valary. |
1468 | * First is matches. |
1469 | * Second one is replacements |
1470 | */ |
691a2d25 |
1471 | list($valmatch, $valrepl) = $valary; |
da2415c1 |
1472 | $newvalue = |
691a2d25 |
1473 | preg_replace($valmatch, $valrepl, $attvalue); |
1474 | if ($newvalue != $attvalue){ |
1475 | $attary{$attname} = $newvalue; |
1476 | } |
1477 | } |
1478 | } |
451f74a2 |
1479 | } |
a3daaaf3 |
1480 | } |
834a1027 |
1481 | |
1482 | |
1483 | /** |
1484 | * Replace empty src tags with the blank image. src is only used |
1485 | * for frames, images, and image inputs. Doing a replace should |
1486 | * not affect them working as should be, however it will stop |
1487 | * IE from being kicked off when src for img tags are not set |
1488 | */ |
5a6fde9e |
1489 | if (($attname == 'src') && ($attvalue == '""')) { |
834a1027 |
1490 | $attary{$attname} = '"' . SM_PATH . 'images/blank.png"'; |
1491 | } |
1492 | |
691a2d25 |
1493 | /** |
02474e43 |
1494 | * Turn cid: urls into http-friendly ones. |
1495 | */ |
691a2d25 |
1496 | if (preg_match("/^[\'\"]\s*cid:/si", $attvalue)){ |
b3af12ef |
1497 | $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox); |
691a2d25 |
1498 | } |
ff940ebc |
1499 | |
1500 | /** |
1501 | * "Hack" fix for Outlook using propriatary outbind:// protocol in img tags. |
1502 | * One day MS might actually make it match something useful, for now, falling |
1503 | * back to using cid2http, so we can grab the blank.png. |
1504 | */ |
1505 | if (preg_match("/^[\'\"]\s*outbind:\/\//si", $attvalue)) { |
1506 | $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox); |
1507 | } |
1508 | |
a3daaaf3 |
1509 | } |
691a2d25 |
1510 | /** |
02474e43 |
1511 | * See if we need to append any attributes to this tag. |
1512 | */ |
691a2d25 |
1513 | foreach ($add_attr_to_tag as $matchtag=>$addattary){ |
1514 | if (preg_match($matchtag, $tagname)){ |
1515 | $attary = array_merge($attary, $addattary); |
1516 | } |
1517 | } |
1518 | return $attary; |
451f74a2 |
1519 | } |
a3daaaf3 |
1520 | |
691a2d25 |
1521 | /** |
02474e43 |
1522 | * This function edits the style definition to make them friendly and |
1523 | * usable in SquirrelMail. |
1524 | * |
1525 | * @param $message the message object |
1526 | * @param $id the message id |
1527 | * @param $content a string with whatever is between <style> and </style> |
1528 | * @param $mailbox the message mailbox |
1529 | * @return a string with edited content. |
1530 | */ |
e60a299a |
1531 | function sq_fixstyle($body, $pos, $message, $id, $mailbox){ |
691a2d25 |
1532 | global $view_unsafe_images; |
b583c3e8 |
1533 | $me = 'sq_fixstyle'; |
7d06541f |
1534 | $ret = sq_findnxreg($body, $pos, '</\s*style\s*>'); |
1535 | if ($ret == FALSE){ |
1536 | return array(FALSE, strlen($body)); |
1537 | } |
1538 | $newpos = $ret[0] + strlen($ret[2]); |
1539 | $content = $ret[1]; |
691a2d25 |
1540 | /** |
02474e43 |
1541 | * First look for general BODY style declaration, which would be |
1542 | * like so: |
1543 | * body {background: blah-blah} |
1544 | * and change it to .bodyclass so we can just assign it to a <div> |
1545 | */ |
691a2d25 |
1546 | $content = preg_replace("|body(\s*\{.*?\})|si", ".bodyclass\\1", $content); |
3d8371be |
1547 | $secremoveimg = '../images/' . _("sec_remove_eng.png"); |
691a2d25 |
1548 | /** |
02474e43 |
1549 | * Fix url('blah') declarations. |
1550 | */ |
7d06541f |
1551 | $content = preg_replace("|url\s*\(\s*([\'\"])\s*\S+script\s*:.*?([\'\"])\s*\)|si", |
691a2d25 |
1552 | "url(\\1$secremoveimg\\2)", $content); |
1553 | /** |
02474e43 |
1554 | * Fix url('https*://.*) declarations but only if $view_unsafe_images |
1555 | * is false. |
1556 | */ |
691a2d25 |
1557 | if (!$view_unsafe_images){ |
7d06541f |
1558 | $content = preg_replace("|url\s*\(\s*([\'\"])\s*https*:.*?([\'\"])\s*\)|si", |
691a2d25 |
1559 | "url(\\1$secremoveimg\\2)", $content); |
1560 | } |
da2415c1 |
1561 | |
691a2d25 |
1562 | /** |
02474e43 |
1563 | * Fix urls that refer to cid: |
1564 | */ |
da2415c1 |
1565 | while (preg_match("|url\s*\(\s*([\'\"]\s*cid:.*?[\'\"])\s*\)|si", |
02474e43 |
1566 | $content, $matches)){ |
691a2d25 |
1567 | $cidurl = $matches{1}; |
e60a299a |
1568 | $httpurl = sq_cid2http($message, $id, $cidurl, $mailbox); |
7d06541f |
1569 | $content = preg_replace("|url\s*\(\s*$cidurl\s*\)|si", |
691a2d25 |
1570 | "url($httpurl)", $content); |
1571 | } |
a3daaaf3 |
1572 | |
691a2d25 |
1573 | /** |
02474e43 |
1574 | * Fix stupid css declarations which lead to vulnerabilities |
1575 | * in IE. |
1576 | */ |
f83c60a2 |
1577 | $match = Array('/expression/i', |
02474e43 |
1578 | '/behaviou*r/i', |
1579 | '/binding/i', |
1580 | '/include-source/i'); |
2dd879b8 |
1581 | $replace = Array('idiocy', 'idiocy', 'idiocy', 'idiocy'); |
bb8d0799 |
1582 | $content = preg_replace($match, $replace, $content); |
7d06541f |
1583 | return array($content, $newpos); |
691a2d25 |
1584 | } |
a3daaaf3 |
1585 | |
691a2d25 |
1586 | /** |
02474e43 |
1587 | * This function converts cid: url's into the ones that can be viewed in |
1588 | * the browser. |
1589 | * |
1590 | * @param $message the message object |
1591 | * @param $id the message id |
1592 | * @param $cidurl the cid: url. |
1593 | * @param $mailbox the message mailbox |
1594 | * @return a string with a http-friendly url |
1595 | */ |
b3af12ef |
1596 | function sq_cid2http($message, $id, $cidurl, $mailbox){ |
691a2d25 |
1597 | /** |
02474e43 |
1598 | * Get rid of quotes. |
1599 | */ |
691a2d25 |
1600 | $quotchar = substr($cidurl, 0, 1); |
2dd879b8 |
1601 | if ($quotchar == '"' || $quotchar == "'"){ |
1602 | $cidurl = str_replace($quotchar, "", $cidurl); |
1603 | } else { |
1604 | $quotchar = ''; |
1605 | } |
691a2d25 |
1606 | $cidurl = substr(trim($cidurl), 4); |
e5e9381a |
1607 | $linkurl = find_ent_id($cidurl, $message); |
1608 | /* in case of non-save cid links $httpurl should be replaced by a sort of |
02474e43 |
1609 | unsave link image */ |
e5e9381a |
1610 | $httpurl = ''; |
c8f5f606 |
1611 | |
1612 | /** |
1613 | * This is part of a fix for Outlook Express 6.x generating |
1614 | * cid URLs without creating content-id headers. These images are |
1615 | * not part of the multipart/related html mail. The html contains |
1616 | * <img src="cid:{some_id}/image_filename.ext"> references to |
1617 | * attached images with as goal to render them inline although |
1618 | * the attachment disposition property is not inline. |
1619 | **/ |
1620 | |
1621 | if (empty($linkurl)) { |
1622 | if (preg_match('/{.*}\//', $cidurl)) { |
1623 | $cidurl = preg_replace('/{.*}\//','', $cidurl); |
1624 | if (!empty($cidurl)) { |
1625 | $linkurl = find_ent_id($cidurl, $message); |
1626 | } |
1627 | } |
1628 | } |
1629 | |
1630 | if (!empty($linkurl)) { |
6b04287c |
1631 | $httpurl = $quotchar . SM_PATH . 'src/download.php?absolute_dl=true&' . |
c8f5f606 |
1632 | "passed_id=$id&mailbox=" . urlencode($mailbox) . |
1633 | '&ent_id=' . $linkurl . $quotchar; |
1634 | } else { |
1635 | /** |
1636 | * If we couldn't generate a proper img url, drop in a blank image |
1637 | * instead of sending back empty, otherwise it causes unusual behaviour |
1638 | */ |
59a3dab6 |
1639 | $httpurl = $quotchar . SM_PATH . 'images/blank.png'; |
e5e9381a |
1640 | } |
c8f5f606 |
1641 | |
691a2d25 |
1642 | return $httpurl; |
1643 | } |
1644 | |
1645 | /** |
02474e43 |
1646 | * This function changes the <body> tag into a <div> tag since we |
1647 | * can't really have a body-within-body. |
1648 | * |
1649 | * @param $attary an array of attributes and values of <body> |
1650 | * @param $mailbox mailbox we're currently reading (for cid2http) |
1651 | * @param $message current message (for cid2http) |
1652 | * @param $id current message id (for cid2http) |
1653 | * @return a modified array of attributes to be set for <div> |
1654 | */ |
2dd879b8 |
1655 | function sq_body2div($attary, $mailbox, $message, $id){ |
b583c3e8 |
1656 | $me = 'sq_body2div'; |
3d8371be |
1657 | $divattary = Array('class' => "'bodyclass'"); |
b583c3e8 |
1658 | $text = '#000000'; |
80b4debd |
1659 | $has_bgc_stl = $has_txt_stl = false; |
b583c3e8 |
1660 | $styledef = ''; |
691a2d25 |
1661 | if (is_array($attary) && sizeof($attary) > 0){ |
1662 | foreach ($attary as $attname=>$attvalue){ |
1663 | $quotchar = substr($attvalue, 0, 1); |
1664 | $attvalue = str_replace($quotchar, "", $attvalue); |
1665 | switch ($attname){ |
3d8371be |
1666 | case 'background': |
da2415c1 |
1667 | $attvalue = sq_cid2http($message, $id, |
2dd879b8 |
1668 | $attvalue, $mailbox); |
3d8371be |
1669 | $styledef .= "background-image: url('$attvalue'); "; |
1670 | break; |
1671 | case 'bgcolor': |
80b4debd |
1672 | $has_bgc_stl = true; |
3d8371be |
1673 | $styledef .= "background-color: $attvalue; "; |
1674 | break; |
1675 | case 'text': |
80b4debd |
1676 | $has_txt_stl = true; |
3d8371be |
1677 | $styledef .= "color: $attvalue; "; |
1678 | break; |
691a2d25 |
1679 | } |
a3daaaf3 |
1680 | } |
80b4debd |
1681 | // Outlook defines a white bgcolor and no text color. This can lead to |
1682 | // white text on a white bg with certain themes. |
1683 | if ($has_bgc_stl && !$has_txt_stl) { |
1684 | $styledef .= "color: $text; "; |
1685 | } |
691a2d25 |
1686 | if (strlen($styledef) > 0){ |
1687 | $divattary{"style"} = "\"$styledef\""; |
1688 | } |
1689 | } |
1690 | return $divattary; |
1691 | } |
a3daaaf3 |
1692 | |
691a2d25 |
1693 | /** |
02474e43 |
1694 | * This is the main function and the one you should actually be calling. |
1695 | * There are several variables you should be aware of an which need |
1696 | * special description. |
1697 | * |
1698 | * Since the description is quite lengthy, see it here: |
1699 | * http://linux.duke.edu/projects/mini/htmlfilter/ |
1700 | * |
1701 | * @param $body the string with HTML you wish to filter |
1702 | * @param $tag_list see description above |
1703 | * @param $rm_tags_with_content see description above |
1704 | * @param $self_closing_tags see description above |
1705 | * @param $force_tag_closing see description above |
1706 | * @param $rm_attnames see description above |
1707 | * @param $bad_attvals see description above |
1708 | * @param $add_attr_to_tag see description above |
1709 | * @param $message message object |
1710 | * @param $id message id |
1711 | * @return sanitized html safe to show on your pages. |
1712 | */ |
da2415c1 |
1713 | function sq_sanitize($body, |
02474e43 |
1714 | $tag_list, |
1715 | $rm_tags_with_content, |
1716 | $self_closing_tags, |
1717 | $force_tag_closing, |
1718 | $rm_attnames, |
1719 | $bad_attvals, |
1720 | $add_attr_to_tag, |
1721 | $message, |
1722 | $id, |
1723 | $mailbox |
1724 | ){ |
b583c3e8 |
1725 | $me = 'sq_sanitize'; |
7d06541f |
1726 | $rm_tags = array_shift($tag_list); |
691a2d25 |
1727 | /** |
02474e43 |
1728 | * Normalize rm_tags and rm_tags_with_content. |
1729 | */ |
7d06541f |
1730 | @array_walk($tag_list, 'sq_casenormalize'); |
691a2d25 |
1731 | @array_walk($rm_tags_with_content, 'sq_casenormalize'); |
1732 | @array_walk($self_closing_tags, 'sq_casenormalize'); |
1733 | /** |
02474e43 |
1734 | * See if tag_list is of tags to remove or tags to allow. |
1735 | * false means remove these tags |
1736 | * true means allow these tags |
1737 | */ |
691a2d25 |
1738 | $curpos = 0; |
1739 | $open_tags = Array(); |
2dd879b8 |
1740 | $trusted = "\n<!-- begin sanitized html -->\n"; |
691a2d25 |
1741 | $skip_content = false; |
bb8d0799 |
1742 | /** |
02474e43 |
1743 | * Take care of netscape's stupid javascript entities like |
1744 | * &{alert('boo')}; |
1745 | */ |
bb8d0799 |
1746 | $body = preg_replace("/&(\{.*?\};)/si", "&\\1", $body); |
691a2d25 |
1747 | |
7d06541f |
1748 | while (($curtag = sq_getnxtag($body, $curpos)) != FALSE){ |
691a2d25 |
1749 | list($tagname, $attary, $tagtype, $lt, $gt) = $curtag; |
1750 | $free_content = substr($body, $curpos, $lt-$curpos); |
1751 | /** |
02474e43 |
1752 | * Take care of <style> |
1753 | */ |
7d06541f |
1754 | if ($tagname == "style" && $tagtype == 1){ |
da2415c1 |
1755 | list($free_content, $curpos) = |
e60a299a |
1756 | sq_fixstyle($body, $gt+1, $message, $id, $mailbox); |
7d06541f |
1757 | if ($free_content != FALSE){ |
1758 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
1759 | $trusted .= $free_content; |
1760 | $trusted .= sq_tagprint($tagname, false, 2); |
1761 | } |
1762 | continue; |
691a2d25 |
1763 | } |
1764 | if ($skip_content == false){ |
1765 | $trusted .= $free_content; |
691a2d25 |
1766 | } |
1767 | if ($tagname != FALSE){ |
1768 | if ($tagtype == 2){ |
1769 | if ($skip_content == $tagname){ |
1770 | /** |
02474e43 |
1771 | * Got to the end of tag we needed to remove. |
1772 | */ |
691a2d25 |
1773 | $tagname = false; |
1774 | $skip_content = false; |
1775 | } else { |
1776 | if ($skip_content == false){ |
c828931c |
1777 | if ($tagname == "body"){ |
1778 | $tagname = "div"; |
2dd879b8 |
1779 | } |
da2415c1 |
1780 | if (isset($open_tags{$tagname}) && |
2dd879b8 |
1781 | $open_tags{$tagname} > 0){ |
1782 | $open_tags{$tagname}--; |
691a2d25 |
1783 | } else { |
2dd879b8 |
1784 | $tagname = false; |
691a2d25 |
1785 | } |
691a2d25 |
1786 | } |
1787 | } |
1788 | } else { |
1789 | /** |
02474e43 |
1790 | * $rm_tags_with_content |
1791 | */ |
691a2d25 |
1792 | if ($skip_content == false){ |
1793 | /** |
02474e43 |
1794 | * See if this is a self-closing type and change |
1795 | * tagtype appropriately. |
1796 | */ |
691a2d25 |
1797 | if ($tagtype == 1 |
1798 | && in_array($tagname, $self_closing_tags)){ |
2dd879b8 |
1799 | $tagtype = 3; |
691a2d25 |
1800 | } |
1801 | /** |
02474e43 |
1802 | * See if we should skip this tag and any content |
1803 | * inside it. |
1804 | */ |
691a2d25 |
1805 | if ($tagtype == 1 && |
1806 | in_array($tagname, $rm_tags_with_content)){ |
1807 | $skip_content = $tagname; |
1808 | } else { |
da2415c1 |
1809 | if (($rm_tags == false |
02474e43 |
1810 | && in_array($tagname, $tag_list)) || |
691a2d25 |
1811 | ($rm_tags == true && |
02474e43 |
1812 | !in_array($tagname, $tag_list))){ |
691a2d25 |
1813 | $tagname = false; |
1814 | } else { |
2dd879b8 |
1815 | /** |
02474e43 |
1816 | * Convert body into div. |
1817 | */ |
2dd879b8 |
1818 | if ($tagname == "body"){ |
1819 | $tagname = "div"; |
da2415c1 |
1820 | $attary = sq_body2div($attary, $mailbox, |
02474e43 |
1821 | $message, $id); |
2dd879b8 |
1822 | } |
691a2d25 |
1823 | if ($tagtype == 1){ |
1824 | if (isset($open_tags{$tagname})){ |
1825 | $open_tags{$tagname}++; |
1826 | } else { |
1827 | $open_tags{$tagname}=1; |
1828 | } |
1829 | } |
1830 | /** |
02474e43 |
1831 | * This is where we run other checks. |
1832 | */ |
691a2d25 |
1833 | if (is_array($attary) && sizeof($attary) > 0){ |
1834 | $attary = sq_fixatts($tagname, |
02474e43 |
1835 | $attary, |
1836 | $rm_attnames, |
1837 | $bad_attvals, |
1838 | $add_attr_to_tag, |
1839 | $message, |
1840 | $id, |
1841 | $mailbox |
1842 | ); |
691a2d25 |
1843 | } |
1844 | } |
1845 | } |
691a2d25 |
1846 | } |
1847 | } |
1848 | if ($tagname != false && $skip_content == false){ |
1849 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
1850 | } |
691a2d25 |
1851 | } |
1852 | $curpos = $gt+1; |
a3daaaf3 |
1853 | } |
691a2d25 |
1854 | $trusted .= substr($body, $curpos, strlen($body)-$curpos); |
1855 | if ($force_tag_closing == true){ |
1856 | foreach ($open_tags as $tagname=>$opentimes){ |
1857 | while ($opentimes > 0){ |
1858 | $trusted .= '</' . $tagname . '>'; |
1859 | $opentimes--; |
1860 | } |
1861 | } |
1862 | $trusted .= "\n"; |
1863 | } |
1864 | $trusted .= "<!-- end sanitized html -->\n"; |
1865 | return $trusted; |
1866 | } |
451f74a2 |
1867 | |
691a2d25 |
1868 | /** |
02474e43 |
1869 | * This is a wrapper function to call html sanitizing routines. |
1870 | * |
1871 | * @param $body the body of the message |
1872 | * @param $id the id of the message |
1814c39b |
1873 | * @param $message |
1874 | * @param $mailbox |
1875 | * @param boolean $take_mailto_links When TRUE, converts mailto: links |
1876 | * into internal SM compose links |
1877 | * (optional; default = TRUE) |
02474e43 |
1878 | * @return a string with html safe to display in the browser. |
1879 | */ |
1814c39b |
1880 | function magicHTML($body, $id, $message, $mailbox = 'INBOX', $take_mailto_links = true) { |
376667f7 |
1881 | |
1882 | require_once(SM_PATH . 'functions/url_parser.php'); // for $MailTo_PReg_Match |
1883 | |
691a2d25 |
1884 | global $attachment_common_show_images, $view_unsafe_images, |
02474e43 |
1885 | $has_unsafe_images; |
376667f7 |
1886 | |
691a2d25 |
1887 | /** |
02474e43 |
1888 | * Don't display attached images in HTML mode. |
1889 | */ |
691a2d25 |
1890 | $attachment_common_show_images = false; |
1891 | $tag_list = Array( |
02474e43 |
1892 | false, |
1893 | "object", |
1894 | "meta", |
1895 | "html", |
1896 | "head", |
1897 | "base", |
1898 | "link", |
1899 | "frame", |
1900 | "iframe", |
1901 | "plaintext", |
1902 | "marquee" |
1903 | ); |
691a2d25 |
1904 | |
1905 | $rm_tags_with_content = Array( |
02474e43 |
1906 | "script", |
1907 | "applet", |
1908 | "embed", |
1909 | "title", |
1910 | "frameset", |
1911 | "xml" |
1912 | ); |
691a2d25 |
1913 | |
1914 | $self_closing_tags = Array( |
1915 | "img", |
1916 | "br", |
1917 | "hr", |
ff940ebc |
1918 | "input", |
1919 | "outbind" |
691a2d25 |
1920 | ); |
1921 | |
2dd879b8 |
1922 | $force_tag_closing = true; |
691a2d25 |
1923 | |
1924 | $rm_attnames = Array( |
02474e43 |
1925 | "/.*/" => |
1926 | Array( |
1927 | "/target/i", |
1928 | "/^on.*/i", |
1929 | "/^dynsrc/i", |
1930 | "/^data.*/i", |
1931 | "/^lowsrc.*/i" |
1932 | ) |
1933 | ); |
691a2d25 |
1934 | |
1935 | $secremoveimg = "../images/" . _("sec_remove_eng.png"); |
1936 | $bad_attvals = Array( |
1937 | "/.*/" => |
1938 | Array( |
0a6ec9b5 |
1939 | "/^src|background/i" => |
691a2d25 |
1940 | Array( |
02474e43 |
1941 | Array( |
f83c60a2 |
1942 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
1943 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
1944 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
691a2d25 |
1945 | ), |
02474e43 |
1946 | Array( |
691a2d25 |
1947 | "\\1$secremoveimg\\2", |
bb8d0799 |
1948 | "\\1$secremoveimg\\2", |
3d8371be |
1949 | "\\1$secremoveimg\\2", |
1950 | "\\1$secremoveimg\\2" |
691a2d25 |
1951 | ) |
1952 | ), |
0a6ec9b5 |
1953 | "/^href|action/i" => |
1954 | Array( |
02474e43 |
1955 | Array( |
f83c60a2 |
1956 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
1957 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
1958 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
0a6ec9b5 |
1959 | ), |
02474e43 |
1960 | Array( |
2dd879b8 |
1961 | "\\1#\\1", |
1962 | "\\1#\\1", |
1963 | "\\1#\\1", |
1964 | "\\1#\\1" |
0a6ec9b5 |
1965 | ) |
1966 | ), |
f83c60a2 |
1967 | "/^style/i" => |
691a2d25 |
1968 | Array( |
02474e43 |
1969 | Array( |
f83c60a2 |
1970 | "/expression/i", |
1971 | "/binding/i", |
1972 | "/behaviou*r/i", |
2dd879b8 |
1973 | "/include-source/i", |
4eacb6ed |
1974 | "/position\s*:\s*absolute/i", |
7d06541f |
1975 | "/url\s*\(\s*([\'\"])\s*\S+script\s*:.*([\'\"])\s*\)/si", |
1976 | "/url\s*\(\s*([\'\"])\s*mocha\s*:.*([\'\"])\s*\)/si", |
af861a34 |
1977 | "/url\s*\(\s*([\'\"])\s*about\s*:.*([\'\"])\s*\)/si", |
1978 | "/(.*)\s*:\s*url\s*\(\s*([\'\"]*)\s*\S+script\s*:.*([\'\"]*)\s*\)/si" |
02474e43 |
1979 | ), |
1980 | Array( |
bb8d0799 |
1981 | "idiocy", |
3d8371be |
1982 | "idiocy", |
1983 | "idiocy", |
2dd879b8 |
1984 | "idiocy", |
4eacb6ed |
1985 | "", |
2dd879b8 |
1986 | "url(\\1#\\1)", |
1987 | "url(\\1#\\1)", |
1988 | "url(\\1#\\1)", |
af861a34 |
1989 | "url(\\1#\\1)", |
1990 | "\\1:url(\\2#\\3)" |
02474e43 |
1991 | ) |
1992 | ) |
691a2d25 |
1993 | ) |
1994 | ); |
5262d9a6 |
1995 | if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) { |
2dd879b8 |
1996 | $view_unsafe_images = false; |
45071bd6 |
1997 | } |
691a2d25 |
1998 | if (!$view_unsafe_images){ |
1999 | /** |
02474e43 |
2000 | * Remove any references to http/https if view_unsafe_images set |
2001 | * to false. |
2002 | */ |
2003 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0], |
f83c60a2 |
2004 | '/^([\'\"])\s*https*:.*([\'\"])/si'); |
02474e43 |
2005 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1], |
2dd879b8 |
2006 | "\\1$secremoveimg\\1"); |
02474e43 |
2007 | array_push($bad_attvals{'/.*/'}{'/^style/i'}[0], |
43d678b6 |
2008 | '/url\(([\'\"])\s*https*:.*([\'\"])\)/si'); |
02474e43 |
2009 | array_push($bad_attvals{'/.*/'}{'/^style/i'}[1], |
2dd879b8 |
2010 | "url(\\1$secremoveimg\\1)"); |
691a2d25 |
2011 | } |
451f74a2 |
2012 | |
691a2d25 |
2013 | $add_attr_to_tag = Array( |
da2415c1 |
2014 | "/^a$/i" => |
c25f2fbb |
2015 | Array('target'=>'"_blank"', |
02474e43 |
2016 | 'title'=>'"'._("This external link will open in a new window").'"' |
2dd879b8 |
2017 | ) |
2018 | ); |
da2415c1 |
2019 | $trusted = sq_sanitize($body, |
02474e43 |
2020 | $tag_list, |
2021 | $rm_tags_with_content, |
2022 | $self_closing_tags, |
2023 | $force_tag_closing, |
2024 | $rm_attnames, |
2025 | $bad_attvals, |
2026 | $add_attr_to_tag, |
2027 | $message, |
2028 | $id, |
2029 | $mailbox |
2030 | ); |
f83c60a2 |
2031 | if (preg_match("|$secremoveimg|i", $trusted)){ |
691a2d25 |
2032 | $has_unsafe_images = true; |
da2415c1 |
2033 | } |
ebeb8348 |
2034 | |
2035 | |
376667f7 |
2036 | // we want to parse mailto's in HTML output, change to SM compose links |
2037 | // this is a modified version of code from url_parser.php... but Marc is |
2038 | // right: we need a better filtering implementation; adding this randomly |
2039 | // here is not a great solution |
2040 | // |
1814c39b |
2041 | if ($take_mailto_links) { |
2042 | // parseUrl($trusted); // this even parses URLs inside of tags... too aggressive |
2043 | global $MailTo_PReg_Match; |
2044 | $MailTo_PReg_Match = '/mailto:' . substr($MailTo_PReg_Match, 1); |
2045 | if ((preg_match_all($MailTo_PReg_Match, $trusted, $regs)) && ($regs[0][0] != '')) { |
2046 | foreach ($regs[0] as $i => $mailto_before) { |
2047 | $mailto_params = $regs[10][$i]; |
2048 | |
2049 | // get rid of any tailing quote since we have to add send_to to the end |
2050 | // |
2051 | if (substr($mailto_before, strlen($mailto_before) - 1) == '"') |
2052 | $mailto_before = substr($mailto_before, 0, strlen($mailto_before) - 1); |
2053 | if (substr($mailto_params, strlen($mailto_params) - 1) == '"') |
2054 | $mailto_params = substr($mailto_params, 0, strlen($mailto_params) - 1); |
2055 | |
2056 | if ($regs[1][$i]) { //if there is an email addr before '?', we need to merge it with the params |
2057 | $to = 'to=' . $regs[1][$i]; |
2058 | if (strpos($mailto_params, 'to=') > -1) //already a 'to=' |
2059 | $mailto_params = str_replace('to=', $to . '%2C%20', $mailto_params); |
2060 | else { |
2061 | if ($mailto_params) //already some params, append to them |
2062 | $mailto_params .= '&' . $to; |
2063 | else |
2064 | $mailto_params .= '?' . $to; |
2065 | } |
376667f7 |
2066 | } |
1814c39b |
2067 | |
2068 | $url_str = preg_replace(array('/to=/i', '/(?<!b)cc=/i', '/bcc=/i'), array('send_to=', 'send_to_cc=', 'send_to_bcc='), $mailto_params); |
2069 | |
2070 | // we'll already have target=_blank, no need to allow comp_in_new |
2071 | // here (which would be a lot more work anyway) |
2072 | // |
2073 | global $compose_new_win; |
2074 | $temp_comp_in_new = $compose_new_win; |
2075 | $compose_new_win = 0; |
2076 | $comp_uri = makeComposeLink('src/compose.php' . $url_str, $mailto_before); |
2077 | $compose_new_win = $temp_comp_in_new; |
2078 | |
2079 | // remove <a href=" and anything after the next quote (we only |
2080 | // need the uri, not the link HTML) in compose uri |
2081 | // |
2082 | $comp_uri = substr($comp_uri, 9); |
2083 | $comp_uri = substr($comp_uri, 0, strpos($comp_uri, '"', 1)); |
2084 | $trusted = str_replace($mailto_before, $comp_uri, $trusted); |
376667f7 |
2085 | } |
376667f7 |
2086 | } |
2087 | } |
ebeb8348 |
2088 | |
691a2d25 |
2089 | return $trusted; |
451f74a2 |
2090 | } |
a4a70693 |
2091 | |
da2415c1 |
2092 | /** |
02474e43 |
2093 | * function SendDownloadHeaders - send file to the browser |
2094 | * |
2095 | * Original Source: SM core src/download.php |
2096 | * moved here to make it available to other code, and separate |
2097 | * front end from back end functionality. |
2098 | * |
2099 | * @param string $type0 first half of mime type |
2100 | * @param string $type1 second half of mime type |
2101 | * @param string $filename filename to tell the browser for downloaded file |
2102 | * @param boolean $force whether to force the download dialog to pop |
2103 | * @param optional integer $filesize send the Content-Header and length to the browser |
2104 | * @return void |
2105 | */ |
2106 | function SendDownloadHeaders($type0, $type1, $filename, $force, $filesize=0) { |
2107 | global $languages, $squirrelmail_language; |
2108 | $isIE = $isIE6 = 0; |
2109 | |
2110 | sqgetGlobalVar('HTTP_USER_AGENT', $HTTP_USER_AGENT, SQ_SERVER); |
2111 | |
2112 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false && |
2113 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
2114 | $isIE = 1; |
2115 | } |
2116 | |
2117 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false && |
2118 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
2119 | $isIE6 = 1; |
2120 | } |
2121 | |
2122 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
2123 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename')) { |
2124 | $filename = |
2125 | call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename', $filename, $HTTP_USER_AGENT); |
2126 | } else { |
2127 | $filename = ereg_replace('[\\/:\*\?"<>\|;]', '_', str_replace(' ', ' ', $filename)); |
2128 | } |
2129 | |
2130 | // A Pox on Microsoft and it's Internet Explorer! |
2131 | // |
2132 | // IE has lots of bugs with file downloads. |
2133 | // It also has problems with SSL. Both of these cause problems |
2134 | // for us in this function. |
2135 | // |
2136 | // See this article on Cache Control headers and SSL |
2137 | // http://support.microsoft.com/default.aspx?scid=kb;en-us;323308 |
2138 | // |
2139 | // The best thing you can do for IE is to upgrade to the latest |
2140 | // version |
2141 | //set all the Cache Control Headers for IE |
2142 | if ($isIE) { |
2143 | $filename=rawurlencode($filename); |
2144 | header ("Pragma: public"); |
2145 | header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); # HTTP/1.1 |
2146 | header ("Cache-Control: post-check=0, pre-check=0", false); |
2147 | header ("Cache-control: private"); |
2148 | |
2149 | //set the inline header for IE, we'll add the attachment header later if we need it |
2150 | header ("Content-Disposition: inline; filename=$filename"); |
2151 | } |
2152 | |
2153 | if (!$force) { |
2154 | // Try to show in browser window |
2155 | header ("Content-Disposition: inline; filename=\"$filename\""); |
2156 | header ("Content-Type: $type0/$type1; name=\"$filename\""); |
2157 | } else { |
2158 | // Try to pop up the "save as" box |
2159 | |
2160 | // IE makes this hard. It pops up 2 save boxes, or none. |
2161 | // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP |
2162 | // http://support.microsoft.com/default.aspx?scid=kb;EN-US;260519 |
2163 | // But, according to Microsoft, it is "RFC compliant but doesn't |
2164 | // take into account some deviations that allowed within the |
2165 | // specification." Doesn't that mean RFC non-compliant? |
2166 | // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP |
2167 | |
2168 | // all browsers need the application/octet-stream header for this |
2169 | header ("Content-Type: application/octet-stream; name=\"$filename\""); |
2170 | |
2171 | // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp |
2172 | // Do not have quotes around filename, but that applied to |
2173 | // "attachment"... does it apply to inline too? |
2174 | header ("Content-Disposition: attachment; filename=\"$filename\""); |
2175 | |
2176 | if ($isIE && !$isIE6) { |
2177 | // This combination seems to work mostly. IE 5.5 SP 1 has |
2178 | // known issues (see the Microsoft Knowledge Base) |
2179 | |
2180 | // This works for most types, but doesn't work with Word files |
2181 | header ("Content-Type: application/download; name=\"$filename\""); |
2182 | |
2183 | // These are spares, just in case. :-) |
2184 | //header("Content-Type: $type0/$type1; name=\"$filename\""); |
2185 | //header("Content-Type: application/x-msdownload; name=\"$filename\""); |
2186 | //header("Content-Type: application/octet-stream; name=\"$filename\""); |
2187 | } else { |
2188 | // another application/octet-stream forces download for Netscape |
2189 | header ("Content-Type: application/octet-stream; name=\"$filename\""); |
2190 | } |
2191 | } |
2192 | |
2193 | //send the content-length header if the calling function provides it |
2194 | if ($filesize > 0) { |
2195 | header("Content-Length: $filesize"); |
2196 | } |
07c49f57 |
2197 | |
8d863f64 |
2198 | } // end fn SendDownloadHeaders |
da2415c1 |
2199 | |
da1b55ad |
2200 | ?> |