| 59177427 |
1 | <?php |
| 2ba13803 |
2 | |
| 35586184 |
3 | /** |
| 8bd0068d |
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'); |
| 2c25d36a |
19 | /** add sqm_baseuri()*/ |
| 20 | include_once(SM_PATH . 'functions/display_messages.php'); |
| 8beafbbc |
21 | |
| 7c7b74b3 |
22 | /* -------------------------------------------------------------------------- */ |
| 23 | /* MIME DECODING */ |
| 24 | /* -------------------------------------------------------------------------- */ |
| b74ba498 |
25 | |
| d6c32258 |
26 | /** |
| 8bd0068d |
27 | * Get the MIME structure |
| 28 | * |
| 29 | * This function gets the structure of a message and stores it in the "message" class. |
| 30 | * It will return this object for use with all relevant header information and |
| 31 | * fully parsed into the standard "message" object format. |
| 32 | */ |
| a4a70693 |
33 | function mime_structure ($bodystructure, $flags=array()) { |
| c9d78ab4 |
34 | |
| 3d8371be |
35 | /* Isolate the body structure and remove beginning and end parenthesis. */ |
| a4a70693 |
36 | $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13)); |
| 451f74a2 |
37 | $read = trim(substr ($read, 0, -1)); |
| 22efa9fb |
38 | $i = 0; |
| 39 | $msg = Message::parseStructure($read,$i); |
| 9de42168 |
40 | if (!is_object($msg)) { |
| bd9c880b |
41 | include_once(SM_PATH . 'functions/display_messages.php'); |
| 3d8371be |
42 | global $color, $mailbox; |
| c96c32f4 |
43 | /* removed urldecode because $_GET is auto urldecoded ??? */ |
| a48eba8f |
44 | displayPageHeader( $color, $mailbox ); |
| 5e8de8b6 |
45 | $errormessage = _("SquirrelMail could not decode the bodystructure of the message"); |
| 8bd0068d |
46 | $errormessage .= '<br />'._("The bodystructure provided by your IMAP server:").'<br /><br />'; |
| 472e7acb |
47 | $errormessage .= '<pre>' . htmlspecialchars($read) . '</pre>'; |
| 9de42168 |
48 | plain_error_message( $errormessage, $color ); |
| 3d8371be |
49 | echo '</body></html>'; |
| 9de42168 |
50 | exit; |
| 51 | } |
| a4a70693 |
52 | if (count($flags)) { |
| 7a9e9c89 |
53 | foreach ($flags as $flag) { |
| 54 | $char = strtoupper($flag{1}); |
| 55 | switch ($char) { |
| 3d8371be |
56 | case 'S': |
| 57 | if (strtolower($flag) == '\\seen') { |
| 58 | $msg->is_seen = true; |
| 59 | } |
| 60 | break; |
| 61 | case 'A': |
| 62 | if (strtolower($flag) == '\\answered') { |
| 63 | $msg->is_answered = true; |
| 64 | } |
| 65 | break; |
| 66 | case 'D': |
| 67 | if (strtolower($flag) == '\\deleted') { |
| 68 | $msg->is_deleted = true; |
| 69 | } |
| 70 | break; |
| 71 | case 'F': |
| 72 | if (strtolower($flag) == '\\flagged') { |
| 73 | $msg->is_flagged = true; |
| 74 | } |
| 75 | break; |
| 76 | case 'M': |
| 77 | if (strtolower($flag) == '$mdnsent') { |
| 78 | $msg->is_mdnsent = true; |
| 79 | } |
| 80 | break; |
| 81 | default: |
| 82 | break; |
| 7a9e9c89 |
83 | } |
| 84 | } |
| 451f74a2 |
85 | } |
| 7a9e9c89 |
86 | // listEntities($msg); |
| 3d8371be |
87 | return $msg; |
| 451f74a2 |
88 | } |
| b74ba498 |
89 | |
| 22efa9fb |
90 | |
| 91 | |
| 3d8371be |
92 | /* This starts the parsing of a particular structure. It is called recursively, |
| 8bd0068d |
93 | * so it can be passed different structures. It returns an object of type |
| 94 | * $message. |
| 95 | * First, it checks to see if it is a multipart message. If it is, then it |
| 96 | * handles that as it sees is necessary. If it is just a regular entity, |
| 97 | * then it parses it and adds the necessary header information (by calling out |
| 98 | * to mime_get_elements() |
| 99 | */ |
| 451f74a2 |
100 | |
| 4d592352 |
101 | function mime_fetch_body($imap_stream, $id, $ent_id=1, $fetch_size=0) { |
| 3d8371be |
102 | /* Do a bit of error correction. If we couldn't find the entity id, just guess |
| 8bd0068d |
103 | * that it is the first one. That is usually the case anyway. |
| 104 | */ |
| 7c7b74b3 |
105 | |
| 09a4bde3 |
106 | if (!$ent_id) { |
| 08b7f7cc |
107 | $cmd = "FETCH $id BODY[]"; |
| 1035e159 |
108 | } else { |
| 08b7f7cc |
109 | $cmd = "FETCH $id BODY[$ent_id]"; |
| 09a4bde3 |
110 | } |
| 3d8371be |
111 | |
| 4d592352 |
112 | if ($fetch_size!=0) $cmd .= "<0.$fetch_size>"; |
| da2415c1 |
113 | |
| 6201339c |
114 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, TRUE); |
| 77b88425 |
115 | do { |
| 3d8371be |
116 | $topline = trim(array_shift($data)); |
| 117 | } while($topline && ($topline[0] == '*') && !preg_match('/\* [0-9]+ FETCH.*/i', $topline)) ; |
| a4a70693 |
118 | |
| 451f74a2 |
119 | $wholemessage = implode('', $data); |
| 120 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
| 3d8371be |
121 | $ret = substr($wholemessage, 0, $regs[1]); |
| 122 | /* There is some information in the content info header that could be important |
| 8bd0068d |
123 | * in order to parse html messages. Let's get them here. |
| 124 | */ |
| 0600bdf1 |
125 | // if ($ret{0} == '<') { |
| 6201339c |
126 | // $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, TRUE); |
| 0600bdf1 |
127 | // } |
| 451f74a2 |
128 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
| 129 | $ret = $regs[1]; |
| 130 | } else { |
| 131 | global $where, $what, $mailbox, $passed_id, $startMessage; |
| 3d8371be |
132 | $par = 'mailbox=' . urlencode($mailbox) . '&passed_id=' . $passed_id; |
| 451f74a2 |
133 | if (isset($where) && isset($what)) { |
| 3d8371be |
134 | $par .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
| a3daaaf3 |
135 | } else { |
| 3d8371be |
136 | $par .= '&startMessage=' . $startMessage . '&show_more=0'; |
| 451f74a2 |
137 | } |
| e5ea9327 |
138 | $par .= '&response=' . urlencode($response) . |
| 8bd0068d |
139 | '&message=' . urlencode($message) . |
| 140 | '&topline=' . urlencode($topline); |
| a019eeb8 |
141 | |
| 8bd0068d |
142 | echo '<tt><br />' . |
| 02474e43 |
143 | '<table width="80%"><tr>' . |
| 144 | '<tr><td colspan="2">' . |
| 145 | _("Body retrieval error. The reason for this is most probably that the message is malformed.") . |
| 146 | '</td></tr>' . |
| 147 | '<tr><td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
| 148 | '<tr><td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
| 149 | '<tr><td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
| 150 | '<tr><td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
| 151 | "</table><br /></tt></font><hr />"; |
| 346817d4 |
152 | |
| 6201339c |
153 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, TRUE); |
| 451f74a2 |
154 | array_shift($data); |
| 155 | $wholemessage = implode('', $data); |
| a019eeb8 |
156 | |
| 346817d4 |
157 | $ret = $wholemessage; |
| a3daaaf3 |
158 | } |
| 3d8371be |
159 | return $ret; |
| 451f74a2 |
160 | } |
| d4467150 |
161 | |
| 6cc670de |
162 | function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding, $rStream='php://stdout') { |
| 1035e159 |
163 | |
| 3d8371be |
164 | /* Don't kill the connection if the browser is over a dialup |
| 8bd0068d |
165 | * and it would take over 30 seconds to download it. |
| 166 | * Don't call set_time_limit in safe mode. |
| 167 | */ |
| b7206e1d |
168 | |
| 3d8371be |
169 | if (!ini_get('safe_mode')) { |
| b7206e1d |
170 | set_time_limit(0); |
| 171 | } |
| 7c7b74b3 |
172 | /* in case of base64 encoded attachments, do not buffer them. |
| 8bd0068d |
173 | Instead, echo the decoded attachment directly to screen */ |
| 7c7b74b3 |
174 | if (strtolower($encoding) == 'base64') { |
| 175 | if (!$ent_id) { |
| 7591f143 |
176 | $query = "FETCH $id BODY[]"; |
| 7c7b74b3 |
177 | } else { |
| 7591f143 |
178 | $query = "FETCH $id BODY[$ent_id]"; |
| 7c7b74b3 |
179 | } |
| 7591f143 |
180 | sqimap_run_command($imap_stream,$query,true,$response,$message,TRUE,'sqimap_base64_decode',$rStream,true); |
| 1d142b8d |
181 | } else { |
| 7591f143 |
182 | $body = mime_fetch_body ($imap_stream, $id, $ent_id); |
| 183 | if (is_resource($rStream)) { |
| 184 | fputs($rStream,decodeBody($body,$encoding)); |
| 185 | } else { |
| 186 | echo decodeBody($body, $encoding); |
| 187 | } |
| 1d142b8d |
188 | } |
| 346817d4 |
189 | |
| da2415c1 |
190 | /* |
| 8bd0068d |
191 | TODO, use the same method for quoted printable. |
| 192 | However, I assume that quoted printable attachments aren't that large |
| 193 | so the performancegain / memory usage drop will be minimal. |
| 194 | If we decide to add that then we need to adapt sqimap_fread because |
| 195 | we need to split te result on \n and fread doesn't stop at \n. That |
| 196 | means we also should provide $results from sqimap_fread (by ref) to |
| 197 | te function and set $no_return to false. The $filter function for |
| 198 | quoted printable should handle unsetting of $results. |
| 199 | */ |
| da2415c1 |
200 | /* |
| 8bd0068d |
201 | TODO 2: find out how we write to the output stream php://stdout. fwrite |
| 202 | doesn't work because 'php://stdout isn't a stream. |
| 203 | */ |
| 7c7b74b3 |
204 | |
| 5d9c6f73 |
205 | return; |
| 451f74a2 |
206 | } |
| beb9e459 |
207 | |
| 451f74a2 |
208 | /* -[ END MIME DECODING ]----------------------------------------------------------- */ |
| d4467150 |
209 | |
| 3d8371be |
210 | /* This is here for debugging purposes. It will print out a list |
| 8bd0068d |
211 | * of all the entity IDs that are in the $message object. |
| 212 | */ |
| 451f74a2 |
213 | function listEntities ($message) { |
| 3d8371be |
214 | if ($message) { |
| 3c621ba1 |
215 | echo "<tt>" . $message->entity_id . ' : ' . $message->type0 . '/' . $message->type1 . ' parent = '. $message->parent->entity_id. '<br />'; |
| 3d8371be |
216 | for ($i = 0; isset($message->entities[$i]); $i++) { |
| 217 | echo "$i : "; |
| 218 | $msg = listEntities($message->entities[$i]); |
| 219 | |
| 220 | if ($msg) { |
| 221 | echo "return: "; |
| 222 | return $msg; |
| 223 | } |
| 224 | } |
| a4a70693 |
225 | } |
| 451f74a2 |
226 | } |
| f0c4dc12 |
227 | |
| f792c641 |
228 | function getPriorityStr($priority) { |
| 3d8371be |
229 | $priority_level = substr($priority,0,1); |
| 230 | |
| 231 | switch($priority_level) { |
| 232 | /* Check for a higher then normal priority. */ |
| 233 | case '1': |
| 234 | case '2': |
| 235 | $priority_string = _("High"); |
| 236 | break; |
| 237 | |
| 238 | /* Check for a lower then normal priority. */ |
| 239 | case '4': |
| 240 | case '5': |
| 241 | $priority_string = _("Low"); |
| 242 | break; |
| 243 | |
| 244 | /* Check for a normal priority. */ |
| 245 | case '3': |
| 246 | default: |
| 247 | $priority_level = '3'; |
| 248 | $priority_string = _("Normal"); |
| 249 | break; |
| 250 | |
| 251 | } |
| 252 | return $priority_string; |
| f792c641 |
253 | } |
| 254 | |
| 451f74a2 |
255 | /* returns a $message object for a particular entity id */ |
| 256 | function getEntity ($message, $ent_id) { |
| a4a70693 |
257 | return $message->getEntity($ent_id); |
| 451f74a2 |
258 | } |
| 8beafbbc |
259 | |
| 3d8371be |
260 | /* translateText |
| 8bd0068d |
261 | * Extracted from strings.php 23/03/2002 |
| 262 | */ |
| da4c66e8 |
263 | |
| 264 | function translateText(&$body, $wrap_at, $charset) { |
| 3d8371be |
265 | global $where, $what; /* from searching */ |
| 266 | global $color; /* color theme */ |
| da4c66e8 |
267 | |
| b68edc75 |
268 | require_once(SM_PATH . 'functions/url_parser.php'); |
| da4c66e8 |
269 | |
| 270 | $body_ary = explode("\n", $body); |
| da4c66e8 |
271 | for ($i=0; $i < count($body_ary); $i++) { |
| 272 | $line = $body_ary[$i]; |
| 273 | if (strlen($line) - 2 >= $wrap_at) { |
| c7aff938 |
274 | sqWordWrap($line, $wrap_at, $charset); |
| da4c66e8 |
275 | } |
| 276 | $line = charset_decode($charset, $line); |
| 277 | $line = str_replace("\t", ' ', $line); |
| 278 | |
| 279 | parseUrl ($line); |
| 280 | |
| 3d8371be |
281 | $quotes = 0; |
| da4c66e8 |
282 | $pos = 0; |
| 3d8371be |
283 | $j = strlen($line); |
| da4c66e8 |
284 | |
| 3d8371be |
285 | while ($pos < $j) { |
| da4c66e8 |
286 | if ($line[$pos] == ' ') { |
| 3d8371be |
287 | $pos++; |
| da4c66e8 |
288 | } else if (strpos($line, '>', $pos) === $pos) { |
| 289 | $pos += 4; |
| 3d8371be |
290 | $quotes++; |
| da4c66e8 |
291 | } else { |
| 292 | break; |
| 293 | } |
| 294 | } |
| 3d8371be |
295 | |
| 83c94382 |
296 | if ($quotes % 2) { |
| 3d8371be |
297 | if (!isset($color[13])) { |
| da4c66e8 |
298 | $color[13] = '#800000'; |
| 299 | } |
| 4c25967c |
300 | $line = '<font color="' . $color[13] . '">' . $line . '</font>'; |
| 301 | } elseif ($quotes) { |
| 302 | if (!isset($color[14])) { |
| 303 | $color[14] = '#FF0000'; |
| 304 | } |
| 305 | $line = '<font color="' . $color[14] . '">' . $line . '</font>'; |
| da4c66e8 |
306 | } |
| 3d8371be |
307 | |
| da4c66e8 |
308 | $body_ary[$i] = $line; |
| 309 | } |
| 310 | $body = '<pre>' . implode("\n", $body_ary) . '</pre>'; |
| 311 | } |
| 312 | |
| a2bfcbce |
313 | /** |
| da1b55ad |
314 | * This returns a parsed string called $body. That string can then |
| 315 | * be displayed as the actual message in the HTML. It contains |
| 316 | * everything needed, including HTML Tags, Attachments at the |
| 317 | * bottom, etc. |
| f8a1ed5a |
318 | * |
| da1b55ad |
319 | * Since 1.2.0 function uses message_body hook. |
| 320 | * Till 1.3.0 function included output of formatAttachments(). |
| 321 | * |
| 322 | * @param resource $imap_stream imap connection resource |
| 323 | * @param object $message squirrelmail message object |
| 324 | * @param array $color squirrelmail color theme array |
| 325 | * @param integer $wrap_at number of characters per line |
| 326 | * @param string $ent_num (since 1.3.0) message part id |
| 327 | * @param integer $id (since 1.3.0) message id |
| 328 | * @param string $mailbox (since 1.3.0) imap folder name |
| 329 | * @param boolean $clean (since 1.5.1) Do not output stuff that's irrelevant for the printable version. |
| 330 | * @return string html formated message text |
| 331 | */ |
| a2bfcbce |
332 | function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num, $id, $mailbox='INBOX', $clean=FALSE) { |
| 3d8371be |
333 | /* This if statement checks for the entity to show as the |
| 8bd0068d |
334 | * primary message. To add more of them, just put them in the |
| 335 | * order that is their priority. |
| 336 | */ |
| ce68b76b |
337 | global $startMessage, $languages, $squirrelmail_language, |
| 8bd0068d |
338 | $show_html_default, $sort, $has_unsafe_images, $passed_ent_id, $use_iframe,$iframe_height; |
| 2c25d36a |
339 | |
| 340 | // workaround for not updated config.php |
| 341 | if (! isset($use_iframe)) $use_iframe = false; |
| 77bfbd2e |
342 | |
| 5262d9a6 |
343 | if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) { |
| 344 | $view_unsafe_images = false; |
| 77bfbd2e |
345 | } |
| d03c24f4 |
346 | |
| cc34b00d |
347 | $body = ''; |
| 23bcec6f |
348 | $urlmailbox = urlencode($mailbox); |
| 451f74a2 |
349 | $body_message = getEntity($message, $ent_num); |
| 350 | if (($body_message->header->type0 == 'text') || |
| 8bd0068d |
351 | ($body_message->header->type0 == 'rfc822')) { |
| 3d8371be |
352 | $body = mime_fetch_body ($imap_stream, $id, $ent_num); |
| 451f74a2 |
353 | $body = decodeBody($body, $body_message->header->encoding); |
| e842b215 |
354 | |
| 355 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
356 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) { |
| e842b215 |
357 | if (mb_detect_encoding($body) != 'ASCII') { |
| 33a55f5a |
358 | $body = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode',$body); |
| e842b215 |
359 | } |
| 360 | } |
| 451f74a2 |
361 | $hookResults = do_hook("message_body", $body); |
| 362 | $body = $hookResults[1]; |
| 23bcec6f |
363 | |
| 3d8371be |
364 | /* If there are other types that shouldn't be formatted, add |
| 8bd0068d |
365 | * them here. |
| 366 | */ |
| 3d8371be |
367 | |
| 451f74a2 |
368 | if ($body_message->header->type1 == 'html') { |
| 3d8371be |
369 | if ($show_html_default <> 1) { |
| 85015544 |
370 | $entity_conv = array(' ' => ' ', |
| 8bd0068d |
371 | '<p>' => "\n", |
| 372 | '<P>' => "\n", |
| 373 | '<br>' => "\n", |
| 374 | '<BR>' => "\n", |
| 375 | '<br />' => "\n", |
| 376 | '<BR />' => "\n", |
| 377 | '>' => '>', |
| 378 | '<' => '<'); |
| 85015544 |
379 | $body = strtr($body, $entity_conv); |
| 3d8371be |
380 | $body = strip_tags($body); |
| 85015544 |
381 | $body = trim($body); |
| 382 | translateText($body, $wrap_at, |
| 8bd0068d |
383 | $body_message->header->getParameter('charset')); |
| 2c25d36a |
384 | } elseif ($use_iframe && ! $clean) { |
| 385 | // $clean is used to remove iframe in printable view. |
| 386 | |
| 84410f31 |
387 | /** |
| 388 | * If we don't add html message between iframe tags, |
| 389 | * we must detect unsafe images and modify $has_unsafe_images. |
| f8a1ed5a |
390 | */ |
| 84410f31 |
391 | $html_body = magicHTML($body, $id, $message, $mailbox); |
| 392 | |
| 2c25d36a |
393 | // creating iframe url |
| 394 | $iframeurl=sqm_baseuri().'src/view_html.php?' |
| f8a1ed5a |
395 | . 'mailbox=' . $urlmailbox |
| 2c25d36a |
396 | . '&passed_id=' . $id |
| 397 | . '&ent_id=' . $ent_num |
| 398 | . '&view_unsafe_images=' . (int) $view_unsafe_images; |
| 399 | |
| 400 | // adding warning message |
| 401 | $body = html_tag('div',_("Viewing HTML formatted email"),'center'); |
| 402 | |
| 403 | /** |
| f8a1ed5a |
404 | * height can't be set to 100%, because it does not work as expected when |
| 405 | * iframe is inside the table. Browsers do not create full height objects |
| 406 | * even when iframe is not nested. Maybe there is some way to get full size |
| 2c25d36a |
407 | * with CSS. Tested in firefox 1.02 and opera 7.53 |
| 408 | * |
| 409 | * width="100%" does not work as expected, when table width is not set (automatic) |
| 410 | * |
| 411 | * tokul: I think <iframe> are safer sandbox than <object>. Objects might |
| 412 | * need special handling for IE and IE6SP2. |
| 413 | */ |
| 414 | $body.= "<div><iframe name=\"message_frame\" width=\"100%\" height=\"$iframe_height\" src=\"$iframeurl\"" |
| 415 | .' frameborder="1" marginwidth="0" marginheight="0" scrolling="auto">' . "\n"; |
| 416 | |
| 417 | // Message for browsers without iframe support |
| f8a1ed5a |
418 | //$body.= _("Your browser does not support inline frames. |
| 84410f31 |
419 | // You can view HTML formated message by following below link."); |
| f8a1ed5a |
420 | //$body.= "<br /><a href=\"$iframeurl\">"._("View HTML Message")."</a>"; |
| 84410f31 |
421 | |
| 422 | // if browser can't render iframe, it renders html message. |
| 423 | $body.= $html_body; |
| 2c25d36a |
424 | |
| 425 | // close iframe |
| 426 | $body.="</iframe></div>\n"; |
| a3daaaf3 |
427 | } else { |
| 2c25d36a |
428 | // old way of html rendering |
| f8a1ed5a |
429 | $body = magicHTML($body, $id, $message, $mailbox); |
| a3daaaf3 |
430 | } |
| 451f74a2 |
431 | } else { |
| 3d8371be |
432 | translateText($body, $wrap_at, |
| 8bd0068d |
433 | $body_message->header->getParameter('charset')); |
| 451f74a2 |
434 | } |
| a2bfcbce |
435 | |
| 436 | // if this is the clean display (i.e. printer friendly), stop here. |
| 437 | if ( $clean ) { |
| 438 | return $body; |
| 439 | } |
| 440 | |
| 83cf04bd |
441 | $link = 'passed_id=' . $id . '&ent_id='.$ent_num. |
| 8bd0068d |
442 | '&mailbox=' . $urlmailbox .'&sort=' . $sort . |
| 443 | '&startMessage=' . $startMessage . '&show_more=0'; |
| 08b7f7cc |
444 | if (isset($passed_ent_id)) { |
| 445 | $link .= '&passed_ent_id='.$passed_ent_id; |
| 446 | } |
| 8d863f64 |
447 | $body .= '<center><small><a href="download.php?absolute_dl=true&' . |
| 8bd0068d |
448 | $link . '">' . _("Download this as a file") . '</a>'; |
| 7aad7b77 |
449 | if ($view_unsafe_images) { |
| 23f617b8 |
450 | $text = _("Hide Unsafe Images"); |
| 7aad7b77 |
451 | } else { |
| 08b7f7cc |
452 | if (isset($has_unsafe_images) && $has_unsafe_images) { |
| 453 | $link .= '&view_unsafe_images=1'; |
| 454 | $text = _("View Unsafe Images"); |
| 455 | } else { |
| 456 | $text = ''; |
| 457 | } |
| 3d8371be |
458 | } |
| 83cf04bd |
459 | if($text != '') { |
| 460 | $body .= ' | <a href="read_body.php?' . $link . '">' . $text . '</a>'; |
| 461 | } |
| 3c621ba1 |
462 | $body .= '</small></center><br />' . "\n"; |
| 3d8371be |
463 | } |
| 464 | return $body; |
| 451f74a2 |
465 | } |
| b74ba498 |
466 | |
| da1b55ad |
467 | /** |
| 468 | * Displays attachment links and information |
| da1b55ad |
469 | * |
| 470 | * Since 1.3.0 function is not included in formatBody() call. |
| 471 | * |
| 472 | * Since 1.0.2 uses attachment $type0/$type1 hook. |
| 473 | * Since 1.2.5 uses attachment $type0/* hook. |
| 474 | * Since 1.5.0 uses attachments_bottom hook. |
| f8a1ed5a |
475 | * |
| da1b55ad |
476 | * @param object $message SquirrelMail message object |
| 477 | * @param array $exclude_id message parts that are not attachments. |
| 478 | * @param string $mailbox mailbox name |
| 479 | * @param integer $id message id |
| 480 | * @return string html formated attachment information. |
| 481 | */ |
| 23bcec6f |
482 | function formatAttachments($message, $exclude_id, $mailbox, $id) { |
| 80dcd298 |
483 | global $where, $what, $startMessage, $color, $passed_ent_id; |
| 451f74a2 |
484 | |
| 23bcec6f |
485 | $att_ar = $message->getAttachments($exclude_id); |
| 451f74a2 |
486 | |
| 23bcec6f |
487 | if (!count($att_ar)) return ''; |
| 2e25760a |
488 | |
| 8f5425ec |
489 | $attachments = ''; |
| 2e25760a |
490 | |
| 23bcec6f |
491 | $urlMailbox = urlencode($mailbox); |
| 492 | |
| 493 | foreach ($att_ar as $att) { |
| fdc9d9b5 |
494 | $ent = $att->entity_id; |
| 2e25760a |
495 | $header = $att->header; |
| f0c4dc12 |
496 | $type0 = strtolower($header->type0); |
| 497 | $type1 = strtolower($header->type1); |
| 2e25760a |
498 | $name = ''; |
| 21dab2dc |
499 | $links['download link']['text'] = _("Download"); |
| 2c25d36a |
500 | $links['download link']['href'] = sqm_baseuri() . |
| 8bd0068d |
501 | "src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent"; |
| 2e25760a |
502 | if ($type0 =='message' && $type1 == 'rfc822') { |
| 2c25d36a |
503 | $default_page = sqm_baseuri() . 'src/read_body.php'; |
| 2e25760a |
504 | $rfc822_header = $att->rfc822_header; |
| 098ea084 |
505 | $filename = $rfc822_header->subject; |
| 6cc08d8b |
506 | if (trim( $filename ) == '') { |
| 507 | $filename = 'untitled-[' . $ent . ']' ; |
| 08b7f7cc |
508 | } |
| 2e25760a |
509 | $from_o = $rfc822_header->from; |
| 510 | if (is_object($from_o)) { |
| 04ea844e |
511 | $from_name = decodeHeader($from_o->getAddress(false)); |
| 2e25760a |
512 | } else { |
| 513 | $from_name = _("Unknown sender"); |
| f0c4dc12 |
514 | } |
| 3d8371be |
515 | $description = $from_name; |
| 23bcec6f |
516 | } else { |
| 2c25d36a |
517 | $default_page = sqm_baseuri() . 'src/download.php'; |
| 02474e43 |
518 | $filename = $att->getFilename(); |
| f810c0b2 |
519 | if ($header->description) { |
| 098ea084 |
520 | $description = decodeHeader($header->description); |
| f810c0b2 |
521 | } else { |
| 3d8371be |
522 | $description = ''; |
| 523 | } |
| 2e25760a |
524 | } |
| 525 | |
| 526 | $display_filename = $filename; |
| 3d8371be |
527 | if (isset($passed_ent_id)) { |
| 528 | $passed_ent_id_link = '&passed_ent_id='.$passed_ent_id; |
| 529 | } else { |
| 530 | $passed_ent_id_link = ''; |
| 531 | } |
| 532 | $defaultlink = $default_page . "?startMessage=$startMessage" |
| 8bd0068d |
533 | . "&passed_id=$id&mailbox=$urlMailbox" |
| 534 | . '&ent_id='.$ent.$passed_ent_id_link; |
| 2e25760a |
535 | if ($where && $what) { |
| 8bd0068d |
536 | $defaultlink .= '&where='. urlencode($where).'&what='.urlencode($what); |
| 2e25760a |
537 | } |
| 21dab2dc |
538 | |
| 3d8371be |
539 | /* This executes the attachment hook with a specific MIME-type. |
| 8bd0068d |
540 | * If that doesn't have results, it tries if there's a rule |
| 541 | * for a more generic type. |
| 542 | */ |
| 3d8371be |
543 | $hookresults = do_hook("attachment $type0/$type1", $links, |
| 8bd0068d |
544 | $startMessage, $id, $urlMailbox, $ent, $defaultlink, |
| 545 | $display_filename, $where, $what); |
| 3d8371be |
546 | if(count($hookresults[1]) <= 1) { |
| 547 | $hookresults = do_hook("attachment $type0/*", $links, |
| 8bd0068d |
548 | $startMessage, $id, $urlMailbox, $ent, $defaultlink, |
| 549 | $display_filename, $where, $what); |
| 2e25760a |
550 | } |
| 451f74a2 |
551 | |
| 3d8371be |
552 | $links = $hookresults[1]; |
| 553 | $defaultlink = $hookresults[6]; |
| 77b88425 |
554 | |
| 3c621ba1 |
555 | $attachments .= '<tr><td>' . |
| 8bd0068d |
556 | '<a href="'.$defaultlink.'">'.decodeHeader($display_filename).'</a> </td>' . |
| 557 | '<td><small><b>' . show_readable_size($header->size) . |
| 558 | '</b> </small></td>' . |
| 559 | '<td><small>[ '.htmlspecialchars($type0).'/'.htmlspecialchars($type1).' ] </small></td>' . |
| 560 | '<td><small>'; |
| f810c0b2 |
561 | $attachments .= '<b>' . $description . '</b>'; |
| 3c621ba1 |
562 | $attachments .= '</small></td><td><small> '; |
| b74ba498 |
563 | |
| 3d8371be |
564 | $skipspaces = 1; |
| 565 | foreach ($links as $val) { |
| 566 | if ($skipspaces) { |
| 567 | $skipspaces = 0; |
| 2e25760a |
568 | } else { |
| 569 | $attachments .= ' | '; |
| 77b88425 |
570 | } |
| f8a1ed5a |
571 | $attachments .= '<a href="' . $val['href'] . '">' |
| 572 | . (isset($val['text']) && !empty($val['text']) ? $val['text'] : '') |
| 573 | . (isset($val['extra']) && !empty($val['extra']) ? $val['extra'] : '') |
| 2c25d36a |
574 | . '</a>'; |
| 2e25760a |
575 | } |
| 3d8371be |
576 | unset($links); |
| 3c621ba1 |
577 | $attachments .= "</td></tr>\n"; |
| 2e25760a |
578 | } |
| 9ad17edb |
579 | $attachmentadd = do_hook_function('attachments_bottom',$attachments); |
| 580 | if ($attachmentadd != '') |
| 581 | $attachments = $attachmentadd; |
| 2e25760a |
582 | return $attachments; |
| 451f74a2 |
583 | } |
| b74ba498 |
584 | |
| 7c7b74b3 |
585 | function sqimap_base64_decode(&$string) { |
| 7c0ec1d8 |
586 | |
| b17a8968 |
587 | // Base64 encoded data goes in pairs of 4 bytes. To achieve on the |
| 7c0ec1d8 |
588 | // fly decoding (to reduce memory usage) you have to check if the |
| 589 | // data has incomplete pairs |
| 590 | |
| b17a8968 |
591 | // Remove the noise in order to check if the 4 bytes pairs are complete |
| 7c0ec1d8 |
592 | $string = str_replace(array("\r\n","\n", "\r", " "),array('','','',''),$string); |
| 593 | |
| 42ce44f8 |
594 | $sStringRem = ''; |
| 7c0ec1d8 |
595 | $iMod = strlen($string) % 4; |
| 596 | if ($iMod) { |
| 597 | $sStringRem = substr($string,-$iMod); |
| b17a8968 |
598 | // Check if $sStringRem contains padding characters |
| 7c0ec1d8 |
599 | if (substr($sStringRem,-1) != '=') { |
| 600 | $string = substr($string,0,-$iMod); |
| 601 | } else { |
| 602 | $sStringRem = ''; |
| 603 | } |
| 604 | } |
| 7c7b74b3 |
605 | $string = base64_decode($string); |
| 7c0ec1d8 |
606 | return $sStringRem; |
| 7c7b74b3 |
607 | } |
| 608 | |
| 7c0ec1d8 |
609 | |
| 3d8371be |
610 | /* This function decodes the body depending on the encoding type. */ |
| 451f74a2 |
611 | function decodeBody($body, $encoding) { |
| 3d8371be |
612 | global $show_html_default; |
| 83be314a |
613 | |
| b583c3e8 |
614 | $body = str_replace("\r\n", "\n", $body); |
| 615 | $encoding = strtolower($encoding); |
| 3d8371be |
616 | |
| 5166f86a |
617 | $encoding_handler = do_hook_function('decode_body', $encoding); |
| 618 | |
| 619 | |
| 620 | // plugins get first shot at decoding the body |
| 621 | // |
| 622 | if (!empty($encoding_handler) && function_exists($encoding_handler)) { |
| 623 | $body = $encoding_handler('decode', $body); |
| 624 | |
| 625 | } else if ($encoding == 'quoted-printable' || |
| 8bd0068d |
626 | $encoding == 'quoted_printable') { |
| b583c3e8 |
627 | $body = quoted_printable_decode($body); |
| 3d8371be |
628 | |
| b583c3e8 |
629 | while (ereg("=\n", $body)) { |
| 630 | $body = ereg_replace ("=\n", '', $body); |
| 631 | } |
| 3d8371be |
632 | |
| b583c3e8 |
633 | } else if ($encoding == 'base64') { |
| 634 | $body = base64_decode($body); |
| 635 | } |
| 3d8371be |
636 | |
| b583c3e8 |
637 | // All other encodings are returned raw. |
| 3d8371be |
638 | return $body; |
| 451f74a2 |
639 | } |
| 640 | |
| 9f7f68c3 |
641 | /** |
| 8bd0068d |
642 | * Decodes headers |
| 643 | * |
| 644 | * This functions decode strings that is encoded according to |
| 645 | * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). |
| 646 | * Patched by Christian Schmidt <christian@ostenfeld.dk> 23/03/2002 |
| 647 | * |
| 648 | * @param string $string header string that has to be made readable |
| 649 | * @param boolean $utfencode change message in order to be readable on user's charset. defaults to true |
| 650 | * @param boolean $htmlsave preserve spaces and sanitize html special characters. defaults to true |
| 651 | * @param boolean $decide decide if string can be utfencoded. defaults to false |
| 652 | * @return string decoded header string |
| 653 | */ |
| 9f7f68c3 |
654 | function decodeHeader ($string, $utfencode=true,$htmlsave=true,$decide=false) { |
| d6f584fc |
655 | global $languages, $squirrelmail_language,$default_charset; |
| 79e07c7e |
656 | if (is_array($string)) { |
| 657 | $string = implode("\n", $string); |
| 658 | } |
| da2415c1 |
659 | |
| 10dec454 |
660 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
661 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader')) { |
| 33a55f5a |
662 | $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader', $string); |
| 08b7f7cc |
663 | // Do we need to return at this point? |
| 664 | // return $string; |
| 83be314a |
665 | } |
| 79e07c7e |
666 | $i = 0; |
| 08b7f7cc |
667 | $iLastMatch = -2; |
| db65b6b0 |
668 | $encoded = true; |
| 0a06275a |
669 | |
| 098ea084 |
670 | $aString = explode(' ',$string); |
| 08b7f7cc |
671 | $ret = ''; |
| 098ea084 |
672 | foreach ($aString as $chunk) { |
| 358a78a1 |
673 | if ($encoded && $chunk === '') { |
| 08b7f7cc |
674 | continue; |
| 358a78a1 |
675 | } elseif ($chunk === '') { |
| 08b7f7cc |
676 | $ret .= ' '; |
| 677 | continue; |
| 678 | } |
| 098ea084 |
679 | $encoded = false; |
| 08b7f7cc |
680 | /* if encoded words are not separated by a linear-space-white we still catch them */ |
| 681 | $j = $i-1; |
| 7e6ca3e8 |
682 | |
| 08b7f7cc |
683 | while ($match = preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=(.*)$/Ui',$chunk,$res)) { |
| 684 | /* if the last chunk isn't an encoded string then put back the space, otherwise don't */ |
| 685 | if ($iLastMatch !== $j) { |
| 686 | if ($htmlsave) { |
| 9f7f68c3 |
687 | $ret .= ' '; |
| 08b7f7cc |
688 | } else { |
| 689 | $ret .= ' '; |
| 690 | } |
| 691 | } |
| 692 | $iLastMatch = $i; |
| 693 | $j = $i; |
| cb718de0 |
694 | if ($htmlsave) { |
| 695 | $ret .= htmlspecialchars($res[1]); |
| 696 | } else { |
| 697 | $ret .= $res[1]; |
| 698 | } |
| 098ea084 |
699 | $encoding = ucfirst($res[3]); |
| d6f584fc |
700 | |
| 701 | /* decide about valid decoding */ |
| 702 | if ($decide && is_conversion_safe($res[2])) { |
| 8bd0068d |
703 | $utfencode=true; |
| 704 | $can_be_encoded=true; |
| d6f584fc |
705 | } else { |
| 8bd0068d |
706 | $can_be_encoded=false; |
| d6f584fc |
707 | } |
| 098ea084 |
708 | switch ($encoding) |
| 709 | { |
| 8bd0068d |
710 | case 'B': |
| 711 | $replace = base64_decode($res[4]); |
| 712 | if ($utfencode) { |
| 713 | if ($can_be_encoded) { |
| 714 | /* convert string to different charset, |
| 715 | * if functions asks for it (usually in compose) |
| 716 | */ |
| 717 | $ret .= charset_convert($res[2],$replace,$default_charset); |
| 718 | } else { |
| 719 | // convert string to html codes in order to display it |
| 720 | $ret .= charset_decode($res[2],$replace); |
| 721 | } |
| fab65ca9 |
722 | } else { |
| 8bd0068d |
723 | if ($htmlsave) { |
| 724 | $replace = htmlspecialchars($replace); |
| 725 | } |
| 726 | $ret.= $replace; |
| fab65ca9 |
727 | } |
| 8bd0068d |
728 | break; |
| 729 | case 'Q': |
| 730 | $replace = str_replace('_', ' ', $res[4]); |
| 731 | $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))', |
| 732 | $replace); |
| 733 | if ($utfencode) { |
| 734 | if ($can_be_encoded) { |
| 735 | /* convert string to different charset, |
| 736 | * if functions asks for it (usually in compose) |
| 737 | */ |
| 738 | $replace = charset_convert($res[2], $replace,$default_charset); |
| 739 | } else { |
| 740 | // convert string to html codes in order to display it |
| 741 | $replace = charset_decode($res[2], $replace); |
| 742 | } |
| 743 | } else { |
| 744 | if ($htmlsave) { |
| 745 | $replace = htmlspecialchars($replace); |
| 746 | } |
| 098ea084 |
747 | } |
| 8bd0068d |
748 | $ret .= $replace; |
| 749 | break; |
| 750 | default: |
| 751 | break; |
| 79e07c7e |
752 | } |
| 098ea084 |
753 | $chunk = $res[5]; |
| 754 | $encoded = true; |
| 08b7f7cc |
755 | } |
| 756 | if (!$encoded) { |
| 757 | if ($htmlsave) { |
| 9f7f68c3 |
758 | $ret .= ' '; |
| 08b7f7cc |
759 | } else { |
| 760 | $ret .= ' '; |
| da2415c1 |
761 | } |
| 08b7f7cc |
762 | } |
| dc3d13a7 |
763 | |
| 764 | if (!$encoded && $htmlsave) { |
| 765 | $ret .= htmlspecialchars($chunk); |
| 766 | } else { |
| 767 | $ret .= $chunk; |
| 768 | } |
| 098ea084 |
769 | ++$i; |
| 770 | } |
| fd81e884 |
771 | /* remove the first added space */ |
| 772 | if ($ret) { |
| 773 | if ($htmlsave) { |
| 9f7f68c3 |
774 | $ret = substr($ret,5); |
| fd81e884 |
775 | } else { |
| 776 | $ret = substr($ret,1); |
| 777 | } |
| 778 | } |
| da2415c1 |
779 | |
| 08b7f7cc |
780 | return $ret; |
| 451f74a2 |
781 | } |
| 782 | |
| 9f7f68c3 |
783 | /** |
| a24cf710 |
784 | * Encodes header |
| 8bd0068d |
785 | * |
| a24cf710 |
786 | * Function uses XTRA_CODE _encodeheader function, if such function exists. |
| 787 | * |
| 788 | * mb_encode_mimeheader is used, if function is present, 50% or more bytes |
| 789 | * are 8bit and multibyte character set is used. |
| 790 | * |
| 791 | * Function uses Q encoding by default and encodes a string according to RFC |
| 792 | * 1522 for use in headers if it contains 8-bit characters or anything that |
| 793 | * looks like it should be encoded. |
| 8bd0068d |
794 | * |
| 795 | * @param string $string header string, that has to be encoded |
| 796 | * @return string quoted-printable encoded string |
| 797 | */ |
| 451f74a2 |
798 | function encodeHeader ($string) { |
| 6fbd125b |
799 | global $default_charset, $languages, $squirrelmail_language; |
| 83be314a |
800 | |
| 10dec454 |
801 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
802 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader')) { |
| 33a55f5a |
803 | return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader', $string); |
| 83be314a |
804 | } |
| 793cc001 |
805 | |
| a24cf710 |
806 | // Use B encoding for multibyte charsets |
| 807 | $mb_charsets = array('utf-8','big-5','gb2313','euc-kr'); |
| 808 | if (function_exists('mb_encode_mimeheader') && |
| 809 | in_array($default_charset,$mb_charsets) && |
| 810 | in_array($default_charset,sq_mb_list_encodings()) && |
| 811 | sq_count8bit($string)>=(strlen($string)/2)) { |
| 812 | return mb_encode_mimeheader($string,$default_charset,'B',"\r\n"); |
| 813 | } |
| 814 | |
| 451f74a2 |
815 | // Encode only if the string contains 8-bit characters or =? |
| 3d8371be |
816 | $j = strlen($string); |
| 098ea084 |
817 | $max_l = 75 - strlen($default_charset) - 7; |
| 818 | $aRet = array(); |
| 451f74a2 |
819 | $ret = ''; |
| c96c32f4 |
820 | $iEncStart = $enc_init = false; |
| 0d53f0f9 |
821 | $cur_l = $iOffset = 0; |
| 3d8371be |
822 | for($i = 0; $i < $j; ++$i) { |
| c96c32f4 |
823 | switch($string{$i}) |
| 824 | { |
| 8bd0068d |
825 | case '=': |
| 826 | case '<': |
| 827 | case '>': |
| 828 | case ',': |
| 829 | case '?': |
| 830 | case '_': |
| 831 | if ($iEncStart === false) { |
| 832 | $iEncStart = $i; |
| 833 | } |
| 834 | $cur_l+=3; |
| 835 | if ($cur_l > ($max_l-2)) { |
| 836 | /* if there is an stringpart that doesn't need encoding, add it */ |
| 08b7f7cc |
837 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| c96c32f4 |
838 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| 839 | $iOffset = $i; |
| 840 | $cur_l = 0; |
| 841 | $ret = ''; |
| 842 | $iEncStart = false; |
| 08b7f7cc |
843 | } else { |
| 8bd0068d |
844 | $ret .= sprintf("=%02X",ord($string{$i})); |
| c96c32f4 |
845 | } |
| 8bd0068d |
846 | break; |
| 847 | case '(': |
| 848 | case ')': |
| 849 | if ($iEncStart !== false) { |
| 08b7f7cc |
850 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 8bd0068d |
851 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| c96c32f4 |
852 | $iOffset = $i; |
| 8bd0068d |
853 | $cur_l = 0; |
| 854 | $ret = ''; |
| 855 | $iEncStart = false; |
| c96c32f4 |
856 | } |
| 8bd0068d |
857 | break; |
| 858 | case ' ': |
| c96c32f4 |
859 | if ($iEncStart !== false) { |
| 098ea084 |
860 | $cur_l++; |
| 861 | if ($cur_l > $max_l) { |
| 08b7f7cc |
862 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| c96c32f4 |
863 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| c96c32f4 |
864 | $iOffset = $i; |
| 865 | $cur_l = 0; |
| 098ea084 |
866 | $ret = ''; |
| 8bd0068d |
867 | $iEncStart = false; |
| 08b7f7cc |
868 | } else { |
| 8bd0068d |
869 | $ret .= '_'; |
| c96c32f4 |
870 | } |
| 3d8371be |
871 | } |
| 8bd0068d |
872 | break; |
| 873 | default: |
| 874 | $k = ord($string{$i}); |
| 875 | if ($k > 126) { |
| 876 | if ($iEncStart === false) { |
| 877 | // do not start encoding in the middle of a string, also take the rest of the word. |
| 878 | $sLeadString = substr($string,0,$i); |
| 879 | $aLeadString = explode(' ',$sLeadString); |
| 880 | $sToBeEncoded = array_pop($aLeadString); |
| 881 | $iEncStart = $i - strlen($sToBeEncoded); |
| 882 | $ret .= $sToBeEncoded; |
| 883 | $cur_l += strlen($sToBeEncoded); |
| 884 | } |
| 885 | $cur_l += 3; |
| 886 | /* first we add the encoded string that reached it's max size */ |
| 887 | if ($cur_l > ($max_l-2)) { |
| 888 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 889 | $aRet[] = "=?$default_charset?Q?$ret?= "; /* the next part is also encoded => separate by space */ |
| 890 | $cur_l = 3; |
| 891 | $ret = ''; |
| 892 | $iOffset = $i; |
| 893 | $iEncStart = $i; |
| 894 | } |
| 895 | $enc_init = true; |
| 896 | $ret .= sprintf("=%02X", $k); |
| 897 | } else { |
| 898 | if ($iEncStart !== false) { |
| 899 | $cur_l++; |
| 900 | if ($cur_l > $max_l) { |
| 901 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 902 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| 903 | $iEncStart = false; |
| 904 | $iOffset = $i; |
| 905 | $cur_l = 0; |
| 906 | $ret = ''; |
| 907 | } else { |
| 908 | $ret .= $string{$i}; |
| 909 | } |
| 910 | } |
| 911 | } |
| 912 | break; |
| f7b3ba37 |
913 | } |
| 451f74a2 |
914 | } |
| 793cc001 |
915 | |
| c96c32f4 |
916 | if ($enc_init) { |
| 917 | if ($iEncStart !== false) { |
| 918 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 919 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| 920 | } else { |
| 921 | $aRet[] = substr($string,$iOffset); |
| 922 | } |
| 923 | $string = implode('',$aRet); |
| 451f74a2 |
924 | } |
| 3d8371be |
925 | return $string; |
| 451f74a2 |
926 | } |
| b74ba498 |
927 | |
| 691a2d25 |
928 | /* This function trys to locate the entity_id of a specific mime element */ |
| 3d8371be |
929 | function find_ent_id($id, $message) { |
| a171b359 |
930 | for ($i = 0, $ret = ''; $ret == '' && $i < count($message->entities); $i++) { |
| 931 | if ($message->entities[$i]->header->type0 == 'multipart') { |
| 3d8371be |
932 | $ret = find_ent_id($id, $message->entities[$i]); |
| 451f74a2 |
933 | } else { |
| 3d8371be |
934 | if (strcasecmp($message->entities[$i]->header->id, $id) == 0) { |
| d8cffbab |
935 | // if (sq_check_save_extension($message->entities[$i])) { |
| 8bd0068d |
936 | return $message->entities[$i]->entity_id; |
| da2415c1 |
937 | // } |
| c8f5f606 |
938 | } elseif (!empty($message->entities[$i]->header->parameters['name'])) { |
| 939 | /** |
| 940 | * This is part of a fix for Outlook Express 6.x generating |
| 941 | * cid URLs without creating content-id headers |
| 942 | * @@JA - 20050207 |
| 943 | */ |
| 944 | if (strcasecmp($message->entities[$i]->header->parameters['name'], $id) == 0) { |
| 945 | return $message->entities[$i]->entity_id; |
| 946 | } |
| 3d8371be |
947 | } |
| a3daaaf3 |
948 | } |
| 451f74a2 |
949 | } |
| 3d8371be |
950 | return $ret; |
| 451f74a2 |
951 | } |
| a3daaaf3 |
952 | |
| e5e9381a |
953 | function sq_check_save_extension($message) { |
| 954 | $filename = $message->getFilename(); |
| 955 | $ext = substr($filename, strrpos($filename,'.')+1); |
| 956 | $save_extensions = array('jpg','jpeg','gif','png','bmp'); |
| 3d8371be |
957 | return in_array($ext, $save_extensions); |
| e5e9381a |
958 | } |
| 959 | |
| 960 | |
| 691a2d25 |
961 | /** |
| 8bd0068d |
962 | ** HTMLFILTER ROUTINES |
| 963 | */ |
| 451f74a2 |
964 | |
| 2dd879b8 |
965 | /** |
| 0493ed11 |
966 | * This function checks attribute values for entity-encoded values |
| 967 | * and returns them translated into 8-bit strings so we can run |
| 968 | * checks on them. |
| 8bd0068d |
969 | * |
| 0493ed11 |
970 | * @param $attvalue A string to run entity check against. |
| 971 | * @return Nothing, modifies a reference value. |
| 8bd0068d |
972 | */ |
| 0493ed11 |
973 | function sq_defang(&$attvalue){ |
| 974 | $me = 'sq_defang'; |
| 2dd879b8 |
975 | /** |
| 0493ed11 |
976 | * Skip this if there aren't ampersands or backslashes. |
| 8bd0068d |
977 | */ |
| 0493ed11 |
978 | if (strpos($attvalue, '&') === false |
| 979 | && strpos($attvalue, '\\') === false){ |
| 980 | return; |
| 2dd879b8 |
981 | } |
| 0493ed11 |
982 | $m = false; |
| 983 | do { |
| 984 | $m = false; |
| 985 | $m = $m || sq_deent($attvalue, '/\�*(\d+);*/s'); |
| 986 | $m = $m || sq_deent($attvalue, '/\�*((\d|[a-f])+);*/si', true); |
| 987 | $m = $m || sq_deent($attvalue, '/\\\\(\d+)/s', true); |
| 988 | } while ($m == true); |
| 989 | $attvalue = stripslashes($attvalue); |
| 2dd879b8 |
990 | } |
| 991 | |
| 992 | /** |
| 8bd0068d |
993 | * Kill any tabs, newlines, or carriage returns. Our friends the |
| 994 | * makers of the browser with 95% market value decided that it'd |
| 995 | * be funny to make "java[tab]script" be just as good as "javascript". |
| 996 | * |
| 997 | * @param attvalue The attribute value before extraneous spaces removed. |
| 0493ed11 |
998 | * @return attvalue Nothing, modifies a reference value. |
| 8bd0068d |
999 | */ |
| 0493ed11 |
1000 | function sq_unspace(&$attvalue){ |
| 1001 | $me = 'sq_unspace'; |
| 1002 | if (strcspn($attvalue, "\t\r\n\0 ") != strlen($attvalue)){ |
| 1003 | $attvalue = str_replace(Array("\t", "\r", "\n", "\0", " "), |
| 1004 | Array('', '', '', '', ''), $attvalue); |
| 2dd879b8 |
1005 | } |
| 2dd879b8 |
1006 | } |
| 1007 | |
| 691a2d25 |
1008 | /** |
| 8bd0068d |
1009 | * This function returns the final tag out of the tag name, an array |
| 1010 | * of attributes, and the type of the tag. This function is called by |
| 1011 | * sq_sanitize internally. |
| 1012 | * |
| 1013 | * @param $tagname the name of the tag. |
| 1014 | * @param $attary the array of attributes and their values |
| 1015 | * @param $tagtype The type of the tag (see in comments). |
| 1016 | * @return a string with the final tag representation. |
| 1017 | */ |
| 691a2d25 |
1018 | function sq_tagprint($tagname, $attary, $tagtype){ |
| b583c3e8 |
1019 | $me = 'sq_tagprint'; |
| 3d8371be |
1020 | |
| 691a2d25 |
1021 | if ($tagtype == 2){ |
| 1022 | $fulltag = '</' . $tagname . '>'; |
| 1023 | } else { |
| 1024 | $fulltag = '<' . $tagname; |
| 1025 | if (is_array($attary) && sizeof($attary)){ |
| 1026 | $atts = Array(); |
| 1027 | while (list($attname, $attvalue) = each($attary)){ |
| 1028 | array_push($atts, "$attname=$attvalue"); |
| 1029 | } |
| 1030 | $fulltag .= ' ' . join(" ", $atts); |
| 1031 | } |
| 1032 | if ($tagtype == 3){ |
| b583c3e8 |
1033 | $fulltag .= ' /'; |
| 691a2d25 |
1034 | } |
| b583c3e8 |
1035 | $fulltag .= '>'; |
| 451f74a2 |
1036 | } |
| 691a2d25 |
1037 | return $fulltag; |
| 451f74a2 |
1038 | } |
| a3daaaf3 |
1039 | |
| 691a2d25 |
1040 | /** |
| 8bd0068d |
1041 | * A small helper function to use with array_walk. Modifies a by-ref |
| 1042 | * value and makes it lowercase. |
| 1043 | * |
| 1044 | * @param $val a value passed by-ref. |
| 1045 | * @return void since it modifies a by-ref value. |
| 1046 | */ |
| 691a2d25 |
1047 | function sq_casenormalize(&$val){ |
| 1048 | $val = strtolower($val); |
| 1049 | } |
| 451f74a2 |
1050 | |
| 691a2d25 |
1051 | /** |
| 8bd0068d |
1052 | * This function skips any whitespace from the current position within |
| 1053 | * a string and to the next non-whitespace value. |
| 1054 | * |
| 1055 | * @param $body the string |
| 1056 | * @param $offset the offset within the string where we should start |
| 1057 | * looking for the next non-whitespace character. |
| 1058 | * @return the location within the $body where the next |
| 1059 | * non-whitespace char is located. |
| 1060 | */ |
| 691a2d25 |
1061 | function sq_skipspace($body, $offset){ |
| b583c3e8 |
1062 | $me = 'sq_skipspace'; |
| 3d8371be |
1063 | preg_match('/^(\s*)/s', substr($body, $offset), $matches); |
| 691a2d25 |
1064 | if (sizeof($matches{1})){ |
| 1065 | $count = strlen($matches{1}); |
| 1066 | $offset += $count; |
| 451f74a2 |
1067 | } |
| 691a2d25 |
1068 | return $offset; |
| 451f74a2 |
1069 | } |
| a3daaaf3 |
1070 | |
| 691a2d25 |
1071 | /** |
| 8bd0068d |
1072 | * This function looks for the next character within a string. It's |
| 1073 | * really just a glorified "strpos", except it catches if failures |
| 1074 | * nicely. |
| 1075 | * |
| 1076 | * @param $body The string to look for needle in. |
| 1077 | * @param $offset Start looking from this position. |
| 1078 | * @param $needle The character/string to look for. |
| 1079 | * @return location of the next occurance of the needle, or |
| 1080 | * strlen($body) if needle wasn't found. |
| 1081 | */ |
| 691a2d25 |
1082 | function sq_findnxstr($body, $offset, $needle){ |
| 3d8371be |
1083 | $me = 'sq_findnxstr'; |
| 691a2d25 |
1084 | $pos = strpos($body, $needle, $offset); |
| 1085 | if ($pos === FALSE){ |
| 1086 | $pos = strlen($body); |
| 451f74a2 |
1087 | } |
| 691a2d25 |
1088 | return $pos; |
| 451f74a2 |
1089 | } |
| a3daaaf3 |
1090 | |
| 691a2d25 |
1091 | /** |
| 8bd0068d |
1092 | * This function takes a PCRE-style regexp and tries to match it |
| 1093 | * within the string. |
| 1094 | * |
| 1095 | * @param $body The string to look for needle in. |
| 1096 | * @param $offset Start looking from here. |
| 1097 | * @param $reg A PCRE-style regex to match. |
| 1098 | * @return Returns a false if no matches found, or an array |
| 1099 | * with the following members: |
| 1100 | * - integer with the location of the match within $body |
| 1101 | * - string with whatever content between offset and the match |
| 1102 | * - string with whatever it is we matched |
| 1103 | */ |
| 691a2d25 |
1104 | function sq_findnxreg($body, $offset, $reg){ |
| b583c3e8 |
1105 | $me = 'sq_findnxreg'; |
| 691a2d25 |
1106 | $matches = Array(); |
| 1107 | $retarr = Array(); |
| 7d06541f |
1108 | preg_match("%^(.*?)($reg)%si", substr($body, $offset), $matches); |
| 1109 | if (!isset($matches{0}) || !$matches{0}){ |
| 691a2d25 |
1110 | $retarr = false; |
| 1111 | } else { |
| 1112 | $retarr{0} = $offset + strlen($matches{1}); |
| 1113 | $retarr{1} = $matches{1}; |
| 1114 | $retarr{2} = $matches{2}; |
| 1115 | } |
| 1116 | return $retarr; |
| 1117 | } |
| a3daaaf3 |
1118 | |
| 691a2d25 |
1119 | /** |
| 8bd0068d |
1120 | * This function looks for the next tag. |
| 1121 | * |
| 1122 | * @param $body String where to look for the next tag. |
| 1123 | * @param $offset Start looking from here. |
| 1124 | * @return false if no more tags exist in the body, or |
| 1125 | * an array with the following members: |
| 1126 | * - string with the name of the tag |
| 1127 | * - array with attributes and their values |
| 1128 | * - integer with tag type (1, 2, or 3) |
| 1129 | * - integer where the tag starts (starting "<") |
| 1130 | * - integer where the tag ends (ending ">") |
| 1131 | * first three members will be false, if the tag is invalid. |
| 1132 | */ |
| 691a2d25 |
1133 | function sq_getnxtag($body, $offset){ |
| b583c3e8 |
1134 | $me = 'sq_getnxtag'; |
| 691a2d25 |
1135 | if ($offset > strlen($body)){ |
| 1136 | return false; |
| 1137 | } |
| 1138 | $lt = sq_findnxstr($body, $offset, "<"); |
| 1139 | if ($lt == strlen($body)){ |
| 1140 | return false; |
| 1141 | } |
| 1142 | /** |
| 8bd0068d |
1143 | * We are here: |
| 1144 | * blah blah <tag attribute="value"> |
| 1145 | * \---------^ |
| 1146 | */ |
| 691a2d25 |
1147 | $pos = sq_skipspace($body, $lt+1); |
| 1148 | if ($pos >= strlen($body)){ |
| 1149 | return Array(false, false, false, $lt, strlen($body)); |
| 1150 | } |
| 1151 | /** |
| 8bd0068d |
1152 | * There are 3 kinds of tags: |
| 1153 | * 1. Opening tag, e.g.: |
| 1154 | * <a href="blah"> |
| 1155 | * 2. Closing tag, e.g.: |
| 1156 | * </a> |
| 1157 | * 3. XHTML-style content-less tag, e.g.: |
| 1158 | * <img src="blah" /> |
| 1159 | */ |
| 691a2d25 |
1160 | $tagtype = false; |
| 1161 | switch (substr($body, $pos, 1)){ |
| 3d8371be |
1162 | case '/': |
| 1163 | $tagtype = 2; |
| 1164 | $pos++; |
| 1165 | break; |
| 1166 | case '!': |
| 1167 | /** |
| 8bd0068d |
1168 | * A comment or an SGML declaration. |
| 1169 | */ |
| 3d8371be |
1170 | if (substr($body, $pos+1, 2) == "--"){ |
| 1171 | $gt = strpos($body, "-->", $pos); |
| 1172 | if ($gt === false){ |
| 1173 | $gt = strlen($body); |
| 1174 | } else { |
| 1175 | $gt += 2; |
| 1176 | } |
| 1177 | return Array(false, false, false, $lt, $gt); |
| bb8d0799 |
1178 | } else { |
| 3d8371be |
1179 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1180 | return Array(false, false, false, $lt, $gt); |
| 1181 | } |
| 1182 | break; |
| 1183 | default: |
| 1184 | /** |
| 8bd0068d |
1185 | * Assume tagtype 1 for now. If it's type 3, we'll switch values |
| 1186 | * later. |
| 1187 | */ |
| 3d8371be |
1188 | $tagtype = 1; |
| 1189 | break; |
| 691a2d25 |
1190 | } |
| a3daaaf3 |
1191 | |
| 0493ed11 |
1192 | $tag_start = $pos; |
| 691a2d25 |
1193 | $tagname = ''; |
| 1194 | /** |
| 8bd0068d |
1195 | * Look for next [\W-_], which will indicate the end of the tag name. |
| 1196 | */ |
| 691a2d25 |
1197 | $regary = sq_findnxreg($body, $pos, "[^\w\-_]"); |
| 1198 | if ($regary == false){ |
| 1199 | return Array(false, false, false, $lt, strlen($body)); |
| 1200 | } |
| 1201 | list($pos, $tagname, $match) = $regary; |
| 1202 | $tagname = strtolower($tagname); |
| 1203 | |
| 1204 | /** |
| 8bd0068d |
1205 | * $match can be either of these: |
| 1206 | * '>' indicating the end of the tag entirely. |
| 1207 | * '\s' indicating the end of the tag name. |
| 1208 | * '/' indicating that this is type-3 xhtml tag. |
| 1209 | * |
| 1210 | * Whatever else we find there indicates an invalid tag. |
| 1211 | */ |
| 691a2d25 |
1212 | switch ($match){ |
| 3d8371be |
1213 | case '/': |
| 691a2d25 |
1214 | /** |
| 8bd0068d |
1215 | * This is an xhtml-style tag with a closing / at the |
| 1216 | * end, like so: <img src="blah" />. Check if it's followed |
| 1217 | * by the closing bracket. If not, then this tag is invalid |
| 1218 | */ |
| 3d8371be |
1219 | if (substr($body, $pos, 2) == "/>"){ |
| 1220 | $pos++; |
| 1221 | $tagtype = 3; |
| 1222 | } else { |
| 1223 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1224 | $retary = Array(false, false, false, $lt, $gt); |
| 1225 | return $retary; |
| 1226 | } |
| 1227 | case '>': |
| 1228 | return Array($tagname, false, $tagtype, $lt, $pos); |
| 1229 | break; |
| 1230 | default: |
| 1231 | /** |
| 8bd0068d |
1232 | * Check if it's whitespace |
| 1233 | */ |
| 3d8371be |
1234 | if (!preg_match('/\s/', $match)){ |
| 1235 | /** |
| 8bd0068d |
1236 | * This is an invalid tag! Look for the next closing ">". |
| 1237 | */ |
| 7d06541f |
1238 | $gt = sq_findnxstr($body, $lt, ">"); |
| 3d8371be |
1239 | return Array(false, false, false, $lt, $gt); |
| 1240 | } |
| 1241 | break; |
| 691a2d25 |
1242 | } |
| 3d8371be |
1243 | |
| 691a2d25 |
1244 | /** |
| 8bd0068d |
1245 | * At this point we're here: |
| 1246 | * <tagname attribute='blah'> |
| 1247 | * \-------^ |
| 1248 | * |
| 1249 | * At this point we loop in order to find all attributes. |
| 1250 | */ |
| 691a2d25 |
1251 | $attname = ''; |
| 0493ed11 |
1252 | $atttype = false; |
| 691a2d25 |
1253 | $attary = Array(); |
| 1254 | |
| 1255 | while ($pos <= strlen($body)){ |
| 1256 | $pos = sq_skipspace($body, $pos); |
| 1257 | if ($pos == strlen($body)){ |
| 1258 | /** |
| 8bd0068d |
1259 | * Non-closed tag. |
| 1260 | */ |
| 691a2d25 |
1261 | return Array(false, false, false, $lt, $pos); |
| 1262 | } |
| 1263 | /** |
| 8bd0068d |
1264 | * See if we arrived at a ">" or "/>", which means that we reached |
| 1265 | * the end of the tag. |
| 1266 | */ |
| 691a2d25 |
1267 | $matches = Array(); |
| 164800ad |
1268 | if (preg_match("%^(\s*)(>|/>)%s", substr($body, $pos), $matches)) { |
| c828931c |
1269 | /** |
| 8bd0068d |
1270 | * Yep. So we did. |
| 1271 | */ |
| c828931c |
1272 | $pos += strlen($matches{1}); |
| 1273 | if ($matches{2} == "/>"){ |
| 1274 | $tagtype = 3; |
| 1275 | $pos++; |
| 1276 | } |
| 1277 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
| 1278 | } |
| a3daaaf3 |
1279 | |
| cca46357 |
1280 | /** |
| 8bd0068d |
1281 | * There are several types of attributes, with optional |
| 1282 | * [:space:] between members. |
| 1283 | * Type 1: |
| 1284 | * attrname[:space:]=[:space:]'CDATA' |
| 1285 | * Type 2: |
| 1286 | * attrname[:space:]=[:space:]"CDATA" |
| 1287 | * Type 3: |
| 1288 | * attr[:space:]=[:space:]CDATA |
| 1289 | * Type 4: |
| 1290 | * attrname |
| 1291 | * |
| 1292 | * We leave types 1 and 2 the same, type 3 we check for |
| 1293 | * '"' and convert to """ if needed, then wrap in |
| 1294 | * double quotes. Type 4 we convert into: |
| 1295 | * attrname="yes". |
| 1296 | */ |
| 3f7c623f |
1297 | $regary = sq_findnxreg($body, $pos, "[^:\w\-_]"); |
| 691a2d25 |
1298 | if ($regary == false){ |
| 1299 | /** |
| 8bd0068d |
1300 | * Looks like body ended before the end of tag. |
| 1301 | */ |
| 691a2d25 |
1302 | return Array(false, false, false, $lt, strlen($body)); |
| cca46357 |
1303 | } |
| 691a2d25 |
1304 | list($pos, $attname, $match) = $regary; |
| 1305 | $attname = strtolower($attname); |
| 1306 | /** |
| 8bd0068d |
1307 | * We arrived at the end of attribute name. Several things possible |
| 1308 | * here: |
| 1309 | * '>' means the end of the tag and this is attribute type 4 |
| 1310 | * '/' if followed by '>' means the same thing as above |
| 1311 | * '\s' means a lot of things -- look what it's followed by. |
| 1312 | * anything else means the attribute is invalid. |
| 1313 | */ |
| 691a2d25 |
1314 | switch($match){ |
| 3d8371be |
1315 | case '/': |
| 691a2d25 |
1316 | /** |
| 8bd0068d |
1317 | * This is an xhtml-style tag with a closing / at the |
| 1318 | * end, like so: <img src="blah" />. Check if it's followed |
| 1319 | * by the closing bracket. If not, then this tag is invalid |
| 1320 | */ |
| 3d8371be |
1321 | if (substr($body, $pos, 2) == "/>"){ |
| 691a2d25 |
1322 | $pos++; |
| 3d8371be |
1323 | $tagtype = 3; |
| 691a2d25 |
1324 | } else { |
| 3d8371be |
1325 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1326 | $retary = Array(false, false, false, $lt, $gt); |
| 1327 | return $retary; |
| 1328 | } |
| 1329 | case '>': |
| 1330 | $attary{$attname} = '"yes"'; |
| 1331 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
| 1332 | break; |
| 1333 | default: |
| 1334 | /** |
| 8bd0068d |
1335 | * Skip whitespace and see what we arrive at. |
| 1336 | */ |
| 3d8371be |
1337 | $pos = sq_skipspace($body, $pos); |
| 1338 | $char = substr($body, $pos, 1); |
| 1339 | /** |
| 8bd0068d |
1340 | * Two things are valid here: |
| 1341 | * '=' means this is attribute type 1 2 or 3. |
| 1342 | * \w means this was attribute type 4. |
| 1343 | * anything else we ignore and re-loop. End of tag and |
| 1344 | * invalid stuff will be caught by our checks at the beginning |
| 1345 | * of the loop. |
| 1346 | */ |
| 3d8371be |
1347 | if ($char == "="){ |
| 1348 | $pos++; |
| 1349 | $pos = sq_skipspace($body, $pos); |
| 691a2d25 |
1350 | /** |
| 8bd0068d |
1351 | * Here are 3 possibilities: |
| 1352 | * "'" attribute type 1 |
| 1353 | * '"' attribute type 2 |
| 1354 | * everything else is the content of tag type 3 |
| 1355 | */ |
| 3d8371be |
1356 | $quot = substr($body, $pos, 1); |
| 1357 | if ($quot == "'"){ |
| 1358 | $regary = sq_findnxreg($body, $pos+1, "\'"); |
| 1359 | if ($regary == false){ |
| 1360 | return Array(false, false, false, $lt, strlen($body)); |
| 1361 | } |
| 1362 | list($pos, $attval, $match) = $regary; |
| 1363 | $pos++; |
| 1364 | $attary{$attname} = "'" . $attval . "'"; |
| 1365 | } else if ($quot == '"'){ |
| 1366 | $regary = sq_findnxreg($body, $pos+1, '\"'); |
| 1367 | if ($regary == false){ |
| 1368 | return Array(false, false, false, $lt, strlen($body)); |
| 1369 | } |
| 1370 | list($pos, $attval, $match) = $regary; |
| 1371 | $pos++; |
| 1372 | $attary{$attname} = '"' . $attval . '"'; |
| 1373 | } else { |
| 1374 | /** |
| 8bd0068d |
1375 | * These are hateful. Look for \s, or >. |
| 1376 | */ |
| 3d8371be |
1377 | $regary = sq_findnxreg($body, $pos, "[\s>]"); |
| 1378 | if ($regary == false){ |
| 1379 | return Array(false, false, false, $lt, strlen($body)); |
| 1380 | } |
| 1381 | list($pos, $attval, $match) = $regary; |
| 1382 | /** |
| 8bd0068d |
1383 | * If it's ">" it will be caught at the top. |
| 1384 | */ |
| 3d8371be |
1385 | $attval = preg_replace("/\"/s", """, $attval); |
| 1386 | $attary{$attname} = '"' . $attval . '"'; |
| 7e235a1a |
1387 | } |
| 3d8371be |
1388 | } else if (preg_match("|[\w/>]|", $char)) { |
| 691a2d25 |
1389 | /** |
| 8bd0068d |
1390 | * That was attribute type 4. |
| 1391 | */ |
| 3d8371be |
1392 | $attary{$attname} = '"yes"'; |
| 1393 | } else { |
| 1394 | /** |
| 8bd0068d |
1395 | * An illegal character. Find next '>' and return. |
| 1396 | */ |
| 3d8371be |
1397 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1398 | return Array(false, false, false, $lt, $gt); |
| 451f74a2 |
1399 | } |
| 3d8371be |
1400 | break; |
| 691a2d25 |
1401 | } |
| 1402 | } |
| 1403 | /** |
| 8bd0068d |
1404 | * The fact that we got here indicates that the tag end was never |
| 1405 | * found. Return invalid tag indication so it gets stripped. |
| 1406 | */ |
| 691a2d25 |
1407 | return Array(false, false, false, $lt, strlen($body)); |
| 1408 | } |
| 1409 | |
| 1410 | /** |
| 0493ed11 |
1411 | * Translates entities into literal values so they can be checked. |
| 8bd0068d |
1412 | * |
| 0493ed11 |
1413 | * @param $attvalue the by-ref value to check. |
| 1414 | * @param $regex the regular expression to check against. |
| 1415 | * @param $hex whether the entites are hexadecimal. |
| 1416 | * @return True or False depending on whether there were matches. |
| 8bd0068d |
1417 | */ |
| 0493ed11 |
1418 | function sq_deent(&$attvalue, $regex, $hex=false){ |
| b583c3e8 |
1419 | $me = 'sq_deent'; |
| 0493ed11 |
1420 | $ret_match = false; |
| 1421 | preg_match_all($regex, $attvalue, $matches); |
| 1422 | if (is_array($matches) && sizeof($matches[0]) > 0){ |
| 1423 | $repl = Array(); |
| 1424 | for ($i = 0; $i < sizeof($matches[0]); $i++){ |
| 1425 | $numval = $matches[1][$i]; |
| 1426 | if ($hex){ |
| 1427 | $numval = hexdec($numval); |
| a3daaaf3 |
1428 | } |
| 0493ed11 |
1429 | $repl{$matches[0][$i]} = chr($numval); |
| 691a2d25 |
1430 | } |
| 0493ed11 |
1431 | $attvalue = strtr($attvalue, $repl); |
| 1432 | return true; |
| 1433 | } else { |
| 1434 | return false; |
| 691a2d25 |
1435 | } |
| 691a2d25 |
1436 | } |
| 1437 | |
| 1438 | /** |
| 8bd0068d |
1439 | * This function runs various checks against the attributes. |
| 1440 | * |
| 1441 | * @param $tagname String with the name of the tag. |
| 1442 | * @param $attary Array with all tag attributes. |
| 1443 | * @param $rm_attnames See description for sq_sanitize |
| 1444 | * @param $bad_attvals See description for sq_sanitize |
| 1445 | * @param $add_attr_to_tag See description for sq_sanitize |
| 1446 | * @param $message message object |
| 1447 | * @param $id message id |
| 1448 | * @return Array with modified attributes. |
| 1449 | */ |
| da2415c1 |
1450 | function sq_fixatts($tagname, |
| 1451 | $attary, |
| 691a2d25 |
1452 | $rm_attnames, |
| 1453 | $bad_attvals, |
| 1454 | $add_attr_to_tag, |
| 1455 | $message, |
| b3af12ef |
1456 | $id, |
| 3d8371be |
1457 | $mailbox |
| 691a2d25 |
1458 | ){ |
| b583c3e8 |
1459 | $me = 'sq_fixatts'; |
| 691a2d25 |
1460 | while (list($attname, $attvalue) = each($attary)){ |
| 1461 | /** |
| 8bd0068d |
1462 | * See if this attribute should be removed. |
| 1463 | */ |
| 691a2d25 |
1464 | foreach ($rm_attnames as $matchtag=>$matchattrs){ |
| 1465 | if (preg_match($matchtag, $tagname)){ |
| 1466 | foreach ($matchattrs as $matchattr){ |
| 1467 | if (preg_match($matchattr, $attname)){ |
| 1468 | unset($attary{$attname}); |
| 1469 | continue; |
| 1470 | } |
| 451f74a2 |
1471 | } |
| 451f74a2 |
1472 | } |
| 691a2d25 |
1473 | } |
| 1474 | /** |
| 8bd0068d |
1475 | * Remove any backslashes, entities, and extraneous whitespace. |
| 1476 | */ |
| 0493ed11 |
1477 | sq_defang($attvalue); |
| 1478 | sq_unspace($attvalue); |
| af861a34 |
1479 | |
| 691a2d25 |
1480 | /** |
| 8bd0068d |
1481 | * Now let's run checks on the attvalues. |
| 1482 | * I don't expect anyone to comprehend this. If you do, |
| 1483 | * get in touch with me so I can drive to where you live and |
| 1484 | * shake your hand personally. :) |
| 1485 | */ |
| 691a2d25 |
1486 | foreach ($bad_attvals as $matchtag=>$matchattrs){ |
| 1487 | if (preg_match($matchtag, $tagname)){ |
| 1488 | foreach ($matchattrs as $matchattr=>$valary){ |
| 1489 | if (preg_match($matchattr, $attname)){ |
| 1490 | /** |
| 8bd0068d |
1491 | * There are two arrays in valary. |
| 1492 | * First is matches. |
| 1493 | * Second one is replacements |
| 1494 | */ |
| 691a2d25 |
1495 | list($valmatch, $valrepl) = $valary; |
| da2415c1 |
1496 | $newvalue = |
| 691a2d25 |
1497 | preg_replace($valmatch, $valrepl, $attvalue); |
| 1498 | if ($newvalue != $attvalue){ |
| 1499 | $attary{$attname} = $newvalue; |
| 1500 | } |
| 1501 | } |
| 1502 | } |
| 451f74a2 |
1503 | } |
| a3daaaf3 |
1504 | } |
| 834a1027 |
1505 | |
| 834a1027 |
1506 | /** |
| 1507 | * Replace empty src tags with the blank image. src is only used |
| 1508 | * for frames, images, and image inputs. Doing a replace should |
| 1509 | * not affect them working as should be, however it will stop |
| 1510 | * IE from being kicked off when src for img tags are not set |
| 1511 | */ |
| 5a6fde9e |
1512 | if (($attname == 'src') && ($attvalue == '""')) { |
| 834a1027 |
1513 | $attary{$attname} = '"' . SM_PATH . 'images/blank.png"'; |
| 1514 | } |
| 1515 | |
| 691a2d25 |
1516 | /** |
| 8bd0068d |
1517 | * Turn cid: urls into http-friendly ones. |
| 1518 | */ |
| 691a2d25 |
1519 | if (preg_match("/^[\'\"]\s*cid:/si", $attvalue)){ |
| b3af12ef |
1520 | $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox); |
| 691a2d25 |
1521 | } |
| ff940ebc |
1522 | |
| 1523 | /** |
| 1524 | * "Hack" fix for Outlook using propriatary outbind:// protocol in img tags. |
| 1525 | * One day MS might actually make it match something useful, for now, falling |
| 1526 | * back to using cid2http, so we can grab the blank.png. |
| 1527 | */ |
| 1528 | if (preg_match("/^[\'\"]\s*outbind:\/\//si", $attvalue)) { |
| 1529 | $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox); |
| 1530 | } |
| 1531 | |
| a3daaaf3 |
1532 | } |
| 691a2d25 |
1533 | /** |
| 8bd0068d |
1534 | * See if we need to append any attributes to this tag. |
| 1535 | */ |
| 691a2d25 |
1536 | foreach ($add_attr_to_tag as $matchtag=>$addattary){ |
| 1537 | if (preg_match($matchtag, $tagname)){ |
| 1538 | $attary = array_merge($attary, $addattary); |
| 1539 | } |
| 1540 | } |
| 1541 | return $attary; |
| 451f74a2 |
1542 | } |
| a3daaaf3 |
1543 | |
| 691a2d25 |
1544 | /** |
| 8bd0068d |
1545 | * This function edits the style definition to make them friendly and |
| 1546 | * usable in SquirrelMail. |
| 1547 | * |
| 1548 | * @param $message the message object |
| 1549 | * @param $id the message id |
| 1550 | * @param $content a string with whatever is between <style> and </style> |
| 1551 | * @param $mailbox the message mailbox |
| 1552 | * @return a string with edited content. |
| 1553 | */ |
| e60a299a |
1554 | function sq_fixstyle($body, $pos, $message, $id, $mailbox){ |
| 691a2d25 |
1555 | global $view_unsafe_images; |
| b583c3e8 |
1556 | $me = 'sq_fixstyle'; |
| 7d06541f |
1557 | $ret = sq_findnxreg($body, $pos, '</\s*style\s*>'); |
| 1558 | if ($ret == FALSE){ |
| 1559 | return array(FALSE, strlen($body)); |
| 1560 | } |
| 1561 | $newpos = $ret[0] + strlen($ret[2]); |
| 1562 | $content = $ret[1]; |
| 691a2d25 |
1563 | /** |
| 0493ed11 |
1564 | * First look for general BODY style declaration, which would be |
| 1565 | * like so: |
| 1566 | * body {background: blah-blah} |
| 1567 | * and change it to .bodyclass so we can just assign it to a <div> |
| 1568 | */ |
| 691a2d25 |
1569 | $content = preg_replace("|body(\s*\{.*?\})|si", ".bodyclass\\1", $content); |
| 3d8371be |
1570 | $secremoveimg = '../images/' . _("sec_remove_eng.png"); |
| 691a2d25 |
1571 | /** |
| 0493ed11 |
1572 | * Fix url('blah') declarations. |
| 1573 | */ |
| 1574 | // $content = preg_replace("|url\s*\(\s*([\'\"])\s*\S+script\s*:.*?([\'\"])\s*\)|si", |
| 1575 | // "url(\\1$secremoveimg\\2)", $content); |
| 1576 | // remove NUL |
| 1577 | $content = str_replace("\0", "", $content); |
| 1578 | // NB I insert NUL characters to keep to avoid an infinite loop. They are removed after the loop. |
| 1579 | while (preg_match("/url\s*\(\s*[\'\"]?([^:]+):(.*)?[\'\"]?\s*\)/si", $content, $matches)) { |
| 1580 | $sProto = strtolower($matches[1]); |
| 1581 | switch ($sProto) { |
| 1582 | /** |
| 1583 | * Fix url('https*://.*) declarations but only if $view_unsafe_images |
| 1584 | * is false. |
| 1585 | */ |
| 1586 | case 'https': |
| 1587 | case 'http': |
| 1588 | if (!$view_unsafe_images){ |
| 1589 | $sExpr = "/url\s*\(\s*([\'\"])\s*$sProto*:.*?([\'\"])\s*\)/si"; |
| 1590 | $content = preg_replace($sExpr, "u\0r\0l(\\1$secremoveimg\\2)", $content); |
| 1591 | } |
| 1592 | break; |
| 1593 | /** |
| 1594 | * Fix urls that refer to cid: |
| 1595 | */ |
| 1596 | case 'cid': |
| 1597 | $cidurl = 'cid:'. $matches[2]; |
| 1598 | $httpurl = sq_cid2http($message, $id, $cidurl, $mailbox); |
| 1599 | $content = preg_replace("|url\s*\(\s*$cidurl\s*\)|si", |
| 1600 | "u\0r\0l($httpurl)", $content); |
| 1601 | break; |
| 1602 | default: |
| 1603 | /** |
| 1604 | * replace url with protocol other then the white list |
| 1605 | * http,https and cid by an empty string. |
| 1606 | */ |
| 1607 | $content = preg_replace("/url\s*\(\s*[\'\"]?([^:]+):(.*)?[\'\"]?\s*\)/si", |
| 1608 | "", $content); |
| 1609 | break; |
| 1610 | } |
| 1611 | break; |
| 691a2d25 |
1612 | } |
| 0493ed11 |
1613 | // remove NUL |
| 1614 | $content = str_replace("\0", "", $content); |
| da2415c1 |
1615 | |
| 0493ed11 |
1616 | /** |
| 1617 | * Remove any backslashes, entities, and extraneous whitespace. |
| 1618 | */ |
| 1619 | $contentTemp = $content; |
| 1620 | sq_defang($contentTemp); |
| 1621 | sq_unspace($contentTemp); |
| a3daaaf3 |
1622 | |
| 691a2d25 |
1623 | /** |
| 8bd0068d |
1624 | * Fix stupid css declarations which lead to vulnerabilities |
| 1625 | * in IE. |
| 1626 | */ |
| f83c60a2 |
1627 | $match = Array('/expression/i', |
| 0493ed11 |
1628 | '/behaviou*r/i', |
| 1629 | '/binding/i', |
| 1630 | '/include-source/i'); |
| 2dd879b8 |
1631 | $replace = Array('idiocy', 'idiocy', 'idiocy', 'idiocy'); |
| 0493ed11 |
1632 | $contentNew = preg_replace($match, $replace, $contentTemp); |
| 1633 | if ($contentNew !== $contentTemp) { |
| 1634 | // insecure css declarations are used. From now on we don't care |
| 1635 | // anymore if the css is destroyed by sq_deent, sq_unspace or sq_unbackslash |
| 1636 | $content = $contentNew; |
| 1637 | } |
| 7d06541f |
1638 | return array($content, $newpos); |
| 691a2d25 |
1639 | } |
| a3daaaf3 |
1640 | |
| 0493ed11 |
1641 | |
| 691a2d25 |
1642 | /** |
| 8bd0068d |
1643 | * This function converts cid: url's into the ones that can be viewed in |
| 1644 | * the browser. |
| 1645 | * |
| 1646 | * @param $message the message object |
| 1647 | * @param $id the message id |
| 1648 | * @param $cidurl the cid: url. |
| 1649 | * @param $mailbox the message mailbox |
| 1650 | * @return a string with a http-friendly url |
| 1651 | */ |
| b3af12ef |
1652 | function sq_cid2http($message, $id, $cidurl, $mailbox){ |
| 691a2d25 |
1653 | /** |
| 8bd0068d |
1654 | * Get rid of quotes. |
| 1655 | */ |
| 691a2d25 |
1656 | $quotchar = substr($cidurl, 0, 1); |
| 2dd879b8 |
1657 | if ($quotchar == '"' || $quotchar == "'"){ |
| 1658 | $cidurl = str_replace($quotchar, "", $cidurl); |
| 1659 | } else { |
| 1660 | $quotchar = ''; |
| 1661 | } |
| 691a2d25 |
1662 | $cidurl = substr(trim($cidurl), 4); |
| 0493ed11 |
1663 | |
| 1664 | $match_str = '/\{.*?\}\//'; |
| 1665 | $str_rep = ''; |
| 1666 | $cidurl = preg_replace($match_str, $str_rep, $cidurl); |
| 1667 | |
| e5e9381a |
1668 | $linkurl = find_ent_id($cidurl, $message); |
| 1669 | /* in case of non-save cid links $httpurl should be replaced by a sort of |
| 8bd0068d |
1670 | unsave link image */ |
| e5e9381a |
1671 | $httpurl = ''; |
| c8f5f606 |
1672 | |
| 8bd0068d |
1673 | /** |
| 1674 | * This is part of a fix for Outlook Express 6.x generating |
| 1675 | * cid URLs without creating content-id headers. These images are |
| 1676 | * not part of the multipart/related html mail. The html contains |
| 1677 | * <img src="cid:{some_id}/image_filename.ext"> references to |
| 1678 | * attached images with as goal to render them inline although |
| 1679 | * the attachment disposition property is not inline. |
| 1680 | */ |
| c8f5f606 |
1681 | |
| 1682 | if (empty($linkurl)) { |
| 1683 | if (preg_match('/{.*}\//', $cidurl)) { |
| 1684 | $cidurl = preg_replace('/{.*}\//','', $cidurl); |
| 1685 | if (!empty($cidurl)) { |
| 1686 | $linkurl = find_ent_id($cidurl, $message); |
| 1687 | } |
| 1688 | } |
| 1689 | } |
| f8a1ed5a |
1690 | |
| c8f5f606 |
1691 | if (!empty($linkurl)) { |
| 6b04287c |
1692 | $httpurl = $quotchar . SM_PATH . 'src/download.php?absolute_dl=true&' . |
| 8bd0068d |
1693 | "passed_id=$id&mailbox=" . urlencode($mailbox) . |
| 1694 | '&ent_id=' . $linkurl . $quotchar; |
| c8f5f606 |
1695 | } else { |
| 1696 | /** |
| 1697 | * If we couldn't generate a proper img url, drop in a blank image |
| 1698 | * instead of sending back empty, otherwise it causes unusual behaviour |
| 1699 | */ |
| bc017c1d |
1700 | $httpurl = $quotchar . SM_PATH . 'images/blank.png' . $quotchar; |
| e5e9381a |
1701 | } |
| f8a1ed5a |
1702 | |
| 691a2d25 |
1703 | return $httpurl; |
| 1704 | } |
| 1705 | |
| 1706 | /** |
| 8bd0068d |
1707 | * This function changes the <body> tag into a <div> tag since we |
| 1708 | * can't really have a body-within-body. |
| 1709 | * |
| 1710 | * @param $attary an array of attributes and values of <body> |
| 1711 | * @param $mailbox mailbox we're currently reading (for cid2http) |
| 1712 | * @param $message current message (for cid2http) |
| 1713 | * @param $id current message id (for cid2http) |
| 1714 | * @return a modified array of attributes to be set for <div> |
| 1715 | */ |
| 2dd879b8 |
1716 | function sq_body2div($attary, $mailbox, $message, $id){ |
| b583c3e8 |
1717 | $me = 'sq_body2div'; |
| 3d8371be |
1718 | $divattary = Array('class' => "'bodyclass'"); |
| b583c3e8 |
1719 | $text = '#000000'; |
| c189a963 |
1720 | $has_bgc_stl = $has_txt_stl = false; |
| b583c3e8 |
1721 | $styledef = ''; |
| 691a2d25 |
1722 | if (is_array($attary) && sizeof($attary) > 0){ |
| 1723 | foreach ($attary as $attname=>$attvalue){ |
| 1724 | $quotchar = substr($attvalue, 0, 1); |
| 1725 | $attvalue = str_replace($quotchar, "", $attvalue); |
| 1726 | switch ($attname){ |
| 3d8371be |
1727 | case 'background': |
| 8bd0068d |
1728 | $attvalue = sq_cid2http($message, $id, $attvalue, $mailbox); |
| 3d8371be |
1729 | $styledef .= "background-image: url('$attvalue'); "; |
| 1730 | break; |
| 1731 | case 'bgcolor': |
| c189a963 |
1732 | $has_bgc_stl = true; |
| 3d8371be |
1733 | $styledef .= "background-color: $attvalue; "; |
| 1734 | break; |
| 1735 | case 'text': |
| c189a963 |
1736 | $has_txt_stl = true; |
| 3d8371be |
1737 | $styledef .= "color: $attvalue; "; |
| 1738 | break; |
| 691a2d25 |
1739 | } |
| a3daaaf3 |
1740 | } |
| c189a963 |
1741 | // Outlook defines a white bgcolor and no text color. This can lead to |
| 1742 | // white text on a white bg with certain themes. |
| 1743 | if ($has_bgc_stl && !$has_txt_stl) { |
| 1744 | $styledef .= "color: $text; "; |
| 1745 | } |
| 691a2d25 |
1746 | if (strlen($styledef) > 0){ |
| 1747 | $divattary{"style"} = "\"$styledef\""; |
| 1748 | } |
| 1749 | } |
| 1750 | return $divattary; |
| 1751 | } |
| a3daaaf3 |
1752 | |
| 691a2d25 |
1753 | /** |
| 8bd0068d |
1754 | * This is the main function and the one you should actually be calling. |
| 1755 | * There are several variables you should be aware of an which need |
| 1756 | * special description. |
| 1757 | * |
| 1758 | * Since the description is quite lengthy, see it here: |
| 1759 | * http://linux.duke.edu/projects/mini/htmlfilter/ |
| 1760 | * |
| 1761 | * @param $body the string with HTML you wish to filter |
| 1762 | * @param $tag_list see description above |
| 1763 | * @param $rm_tags_with_content see description above |
| 1764 | * @param $self_closing_tags see description above |
| 1765 | * @param $force_tag_closing see description above |
| 1766 | * @param $rm_attnames see description above |
| 1767 | * @param $bad_attvals see description above |
| 1768 | * @param $add_attr_to_tag see description above |
| 1769 | * @param $message message object |
| 1770 | * @param $id message id |
| 1771 | * @return sanitized html safe to show on your pages. |
| 1772 | */ |
| da2415c1 |
1773 | function sq_sanitize($body, |
| 8bd0068d |
1774 | $tag_list, |
| 1775 | $rm_tags_with_content, |
| 1776 | $self_closing_tags, |
| 1777 | $force_tag_closing, |
| 1778 | $rm_attnames, |
| 1779 | $bad_attvals, |
| 1780 | $add_attr_to_tag, |
| 1781 | $message, |
| 1782 | $id, |
| 1783 | $mailbox |
| 1784 | ){ |
| b583c3e8 |
1785 | $me = 'sq_sanitize'; |
| 7d06541f |
1786 | $rm_tags = array_shift($tag_list); |
| 691a2d25 |
1787 | /** |
| 8bd0068d |
1788 | * Normalize rm_tags and rm_tags_with_content. |
| 1789 | */ |
| 7d06541f |
1790 | @array_walk($tag_list, 'sq_casenormalize'); |
| 691a2d25 |
1791 | @array_walk($rm_tags_with_content, 'sq_casenormalize'); |
| 1792 | @array_walk($self_closing_tags, 'sq_casenormalize'); |
| 1793 | /** |
| 8bd0068d |
1794 | * See if tag_list is of tags to remove or tags to allow. |
| 1795 | * false means remove these tags |
| 1796 | * true means allow these tags |
| 1797 | */ |
| 691a2d25 |
1798 | $curpos = 0; |
| 1799 | $open_tags = Array(); |
| 2dd879b8 |
1800 | $trusted = "\n<!-- begin sanitized html -->\n"; |
| 691a2d25 |
1801 | $skip_content = false; |
| bb8d0799 |
1802 | /** |
| 8bd0068d |
1803 | * Take care of netscape's stupid javascript entities like |
| 1804 | * &{alert('boo')}; |
| 1805 | */ |
| bb8d0799 |
1806 | $body = preg_replace("/&(\{.*?\};)/si", "&\\1", $body); |
| 691a2d25 |
1807 | |
| 7d06541f |
1808 | while (($curtag = sq_getnxtag($body, $curpos)) != FALSE){ |
| 691a2d25 |
1809 | list($tagname, $attary, $tagtype, $lt, $gt) = $curtag; |
| 1810 | $free_content = substr($body, $curpos, $lt-$curpos); |
| 1811 | /** |
| 8bd0068d |
1812 | * Take care of <style> |
| 1813 | */ |
| 7d06541f |
1814 | if ($tagname == "style" && $tagtype == 1){ |
| da2415c1 |
1815 | list($free_content, $curpos) = |
| e60a299a |
1816 | sq_fixstyle($body, $gt+1, $message, $id, $mailbox); |
| 7d06541f |
1817 | if ($free_content != FALSE){ |
| 1818 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
| 1819 | $trusted .= $free_content; |
| 1820 | $trusted .= sq_tagprint($tagname, false, 2); |
| 1821 | } |
| 1822 | continue; |
| 691a2d25 |
1823 | } |
| 1824 | if ($skip_content == false){ |
| 1825 | $trusted .= $free_content; |
| 691a2d25 |
1826 | } |
| 1827 | if ($tagname != FALSE){ |
| 1828 | if ($tagtype == 2){ |
| 1829 | if ($skip_content == $tagname){ |
| 1830 | /** |
| 8bd0068d |
1831 | * Got to the end of tag we needed to remove. |
| 1832 | */ |
| 691a2d25 |
1833 | $tagname = false; |
| 1834 | $skip_content = false; |
| 1835 | } else { |
| 1836 | if ($skip_content == false){ |
| c828931c |
1837 | if ($tagname == "body"){ |
| 1838 | $tagname = "div"; |
| 2dd879b8 |
1839 | } |
| da2415c1 |
1840 | if (isset($open_tags{$tagname}) && |
| 8bd0068d |
1841 | $open_tags{$tagname} > 0){ |
| 2dd879b8 |
1842 | $open_tags{$tagname}--; |
| 691a2d25 |
1843 | } else { |
| 2dd879b8 |
1844 | $tagname = false; |
| 691a2d25 |
1845 | } |
| 691a2d25 |
1846 | } |
| 1847 | } |
| 1848 | } else { |
| 1849 | /** |
| 8bd0068d |
1850 | * $rm_tags_with_content |
| 1851 | */ |
| 691a2d25 |
1852 | if ($skip_content == false){ |
| 1853 | /** |
| 8bd0068d |
1854 | * See if this is a self-closing type and change |
| 1855 | * tagtype appropriately. |
| 1856 | */ |
| 691a2d25 |
1857 | if ($tagtype == 1 |
| 8bd0068d |
1858 | && in_array($tagname, $self_closing_tags)){ |
| 2dd879b8 |
1859 | $tagtype = 3; |
| 691a2d25 |
1860 | } |
| 1861 | /** |
| 8bd0068d |
1862 | * See if we should skip this tag and any content |
| 1863 | * inside it. |
| 1864 | */ |
| 691a2d25 |
1865 | if ($tagtype == 1 && |
| 8bd0068d |
1866 | in_array($tagname, $rm_tags_with_content)){ |
| 691a2d25 |
1867 | $skip_content = $tagname; |
| 1868 | } else { |
| da2415c1 |
1869 | if (($rm_tags == false |
| 8bd0068d |
1870 | && in_array($tagname, $tag_list)) || |
| 1871 | ($rm_tags == true && |
| 1872 | !in_array($tagname, $tag_list))){ |
| 691a2d25 |
1873 | $tagname = false; |
| 1874 | } else { |
| 2dd879b8 |
1875 | /** |
| 8bd0068d |
1876 | * Convert body into div. |
| 1877 | */ |
| 2dd879b8 |
1878 | if ($tagname == "body"){ |
| 1879 | $tagname = "div"; |
| da2415c1 |
1880 | $attary = sq_body2div($attary, $mailbox, |
| 8bd0068d |
1881 | $message, $id); |
| 2dd879b8 |
1882 | } |
| 691a2d25 |
1883 | if ($tagtype == 1){ |
| 1884 | if (isset($open_tags{$tagname})){ |
| 1885 | $open_tags{$tagname}++; |
| 1886 | } else { |
| 1887 | $open_tags{$tagname}=1; |
| 1888 | } |
| 1889 | } |
| 1890 | /** |
| 8bd0068d |
1891 | * This is where we run other checks. |
| 1892 | */ |
| 691a2d25 |
1893 | if (is_array($attary) && sizeof($attary) > 0){ |
| 1894 | $attary = sq_fixatts($tagname, |
| 8bd0068d |
1895 | $attary, |
| 1896 | $rm_attnames, |
| 1897 | $bad_attvals, |
| 1898 | $add_attr_to_tag, |
| 1899 | $message, |
| 1900 | $id, |
| 1901 | $mailbox |
| 1902 | ); |
| 691a2d25 |
1903 | } |
| 1904 | } |
| 1905 | } |
| 691a2d25 |
1906 | } |
| 1907 | } |
| 1908 | if ($tagname != false && $skip_content == false){ |
| 1909 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
| 1910 | } |
| 691a2d25 |
1911 | } |
| 1912 | $curpos = $gt+1; |
| a3daaaf3 |
1913 | } |
| 691a2d25 |
1914 | $trusted .= substr($body, $curpos, strlen($body)-$curpos); |
| 1915 | if ($force_tag_closing == true){ |
| 1916 | foreach ($open_tags as $tagname=>$opentimes){ |
| 1917 | while ($opentimes > 0){ |
| 1918 | $trusted .= '</' . $tagname . '>'; |
| 1919 | $opentimes--; |
| 1920 | } |
| 1921 | } |
| 1922 | $trusted .= "\n"; |
| 1923 | } |
| 1924 | $trusted .= "<!-- end sanitized html -->\n"; |
| 1925 | return $trusted; |
| 1926 | } |
| 451f74a2 |
1927 | |
| 691a2d25 |
1928 | /** |
| 8bd0068d |
1929 | * This is a wrapper function to call html sanitizing routines. |
| 1930 | * |
| 1931 | * @param $body the body of the message |
| 1932 | * @param $id the id of the message |
| c189a963 |
1933 | |
| 1934 | * @param $message |
| 1935 | * @param $mailbox |
| 1936 | * @param boolean $take_mailto_links When TRUE, converts mailto: links |
| 1937 | * into internal SM compose links |
| 1938 | * (optional; default = TRUE) |
| 8bd0068d |
1939 | * @return a string with html safe to display in the browser. |
| 1940 | */ |
| c189a963 |
1941 | function magicHTML($body, $id, $message, $mailbox = 'INBOX', $take_mailto_links =true) { |
| 1942 | |
| 1943 | require_once(SM_PATH . 'functions/url_parser.php'); // for $MailTo_PReg_Match |
| 1944 | |
| 691a2d25 |
1945 | global $attachment_common_show_images, $view_unsafe_images, |
| 8bd0068d |
1946 | $has_unsafe_images; |
| 691a2d25 |
1947 | /** |
| 8bd0068d |
1948 | * Don't display attached images in HTML mode. |
| 1949 | */ |
| 691a2d25 |
1950 | $attachment_common_show_images = false; |
| 1951 | $tag_list = Array( |
| 8bd0068d |
1952 | false, |
| 1953 | "object", |
| 1954 | "meta", |
| 1955 | "html", |
| 1956 | "head", |
| 1957 | "base", |
| 1958 | "link", |
| 1959 | "frame", |
| 1960 | "iframe", |
| 1961 | "plaintext", |
| 1962 | "marquee" |
| 1963 | ); |
| 691a2d25 |
1964 | |
| 1965 | $rm_tags_with_content = Array( |
| 8bd0068d |
1966 | "script", |
| 1967 | "applet", |
| 1968 | "embed", |
| 1969 | "title", |
| 1970 | "frameset", |
| 0493ed11 |
1971 | "xmp", |
| 8bd0068d |
1972 | "xml" |
| 1973 | ); |
| 691a2d25 |
1974 | |
| 1975 | $self_closing_tags = Array( |
| 8bd0068d |
1976 | "img", |
| 1977 | "br", |
| 1978 | "hr", |
| 1979 | "input", |
| 1980 | "outbind" |
| 1981 | ); |
| 691a2d25 |
1982 | |
| 2dd879b8 |
1983 | $force_tag_closing = true; |
| 691a2d25 |
1984 | |
| 1985 | $rm_attnames = Array( |
| 8bd0068d |
1986 | "/.*/" => |
| 1987 | Array( |
| 1988 | "/target/i", |
| 1989 | "/^on.*/i", |
| 1990 | "/^dynsrc/i", |
| 1991 | "/^data.*/i", |
| 1992 | "/^lowsrc.*/i" |
| 1993 | ) |
| 1994 | ); |
| 691a2d25 |
1995 | |
| 1996 | $secremoveimg = "../images/" . _("sec_remove_eng.png"); |
| 1997 | $bad_attvals = Array( |
| 8bd0068d |
1998 | "/.*/" => |
| 691a2d25 |
1999 | Array( |
| 0a6ec9b5 |
2000 | "/^src|background/i" => |
| 8bd0068d |
2001 | Array( |
| 691a2d25 |
2002 | Array( |
| 8bd0068d |
2003 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
| 2004 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
| 2005 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
| 691a2d25 |
2006 | ), |
| 8bd0068d |
2007 | Array( |
| 2008 | "\\1$secremoveimg\\2", |
| 2009 | "\\1$secremoveimg\\2", |
| 2010 | "\\1$secremoveimg\\2", |
| 2011 | "\\1$secremoveimg\\2" |
| 2012 | ) |
| 2013 | ), |
| 0a6ec9b5 |
2014 | "/^href|action/i" => |
| 8bd0068d |
2015 | Array( |
| 0a6ec9b5 |
2016 | Array( |
| 8bd0068d |
2017 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
| 2018 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
| 2019 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
| 0a6ec9b5 |
2020 | ), |
| 691a2d25 |
2021 | Array( |
| 8bd0068d |
2022 | "\\1#\\1", |
| 2023 | "\\1#\\1", |
| 2024 | "\\1#\\1", |
| 2025 | "\\1#\\1" |
| 02474e43 |
2026 | ) |
| 8bd0068d |
2027 | ), |
| 2028 | "/^style/i" => |
| 2029 | Array( |
| 2030 | Array( |
| 2031 | "/expression/i", |
| 2032 | "/binding/i", |
| 2033 | "/behaviou*r/i", |
| 2034 | "/include-source/i", |
| 2035 | "/position\s*:\s*absolute/i", |
| 2036 | "/url\s*\(\s*([\'\"])\s*\S+script\s*:.*([\'\"])\s*\)/si", |
| 2037 | "/url\s*\(\s*([\'\"])\s*mocha\s*:.*([\'\"])\s*\)/si", |
| 2038 | "/url\s*\(\s*([\'\"])\s*about\s*:.*([\'\"])\s*\)/si", |
| 2039 | "/(.*)\s*:\s*url\s*\(\s*([\'\"]*)\s*\S+script\s*:.*([\'\"]*)\s*\)/si" |
| 2040 | ), |
| 2041 | Array( |
| 2042 | "idiocy", |
| 2043 | "idiocy", |
| 2044 | "idiocy", |
| 2045 | "idiocy", |
| 2046 | "", |
| 2047 | "url(\\1#\\1)", |
| 2048 | "url(\\1#\\1)", |
| 2049 | "url(\\1#\\1)", |
| 2050 | "url(\\1#\\1)", |
| 0493ed11 |
2051 | "url(\\1#\\1)", |
| 8bd0068d |
2052 | "\\1:url(\\2#\\3)" |
| 2053 | ) |
| 691a2d25 |
2054 | ) |
| 8bd0068d |
2055 | ) |
| 691a2d25 |
2056 | ); |
| 5262d9a6 |
2057 | if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) { |
| 2dd879b8 |
2058 | $view_unsafe_images = false; |
| 45071bd6 |
2059 | } |
| 691a2d25 |
2060 | if (!$view_unsafe_images){ |
| 2061 | /** |
| 8bd0068d |
2062 | * Remove any references to http/https if view_unsafe_images set |
| 2063 | * to false. |
| 2064 | */ |
| 02474e43 |
2065 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0], |
| 8bd0068d |
2066 | '/^([\'\"])\s*https*:.*([\'\"])/si'); |
| 02474e43 |
2067 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1], |
| 8bd0068d |
2068 | "\\1$secremoveimg\\1"); |
| 02474e43 |
2069 | array_push($bad_attvals{'/.*/'}{'/^style/i'}[0], |
| 8bd0068d |
2070 | '/url\(([\'\"])\s*https*:.*([\'\"])\)/si'); |
| 02474e43 |
2071 | array_push($bad_attvals{'/.*/'}{'/^style/i'}[1], |
| 8bd0068d |
2072 | "url(\\1$secremoveimg\\1)"); |
| 691a2d25 |
2073 | } |
| 451f74a2 |
2074 | |
| 691a2d25 |
2075 | $add_attr_to_tag = Array( |
| 8bd0068d |
2076 | "/^a$/i" => |
| c25f2fbb |
2077 | Array('target'=>'"_blank"', |
| 02474e43 |
2078 | 'title'=>'"'._("This external link will open in a new window").'"' |
| 8bd0068d |
2079 | ) |
| 2080 | ); |
| da2415c1 |
2081 | $trusted = sq_sanitize($body, |
| 8bd0068d |
2082 | $tag_list, |
| 2083 | $rm_tags_with_content, |
| 2084 | $self_closing_tags, |
| 2085 | $force_tag_closing, |
| 2086 | $rm_attnames, |
| 2087 | $bad_attvals, |
| 2088 | $add_attr_to_tag, |
| 2089 | $message, |
| 2090 | $id, |
| 2091 | $mailbox |
| 2092 | ); |
| f83c60a2 |
2093 | if (preg_match("|$secremoveimg|i", $trusted)){ |
| 691a2d25 |
2094 | $has_unsafe_images = true; |
| da2415c1 |
2095 | } |
| c189a963 |
2096 | |
| 2097 | // we want to parse mailto's in HTML output, change to SM compose links |
| 2098 | // this is a modified version of code from url_parser.php... but Marc is |
| 2099 | // right: we need a better filtering implementation; adding this randomly |
| 2100 | // here is not a great solution |
| 2101 | // |
| 2102 | if ($take_mailto_links) { |
| 2103 | // parseUrl($trusted); // this even parses URLs inside of tags... too aggressive |
| 2104 | global $MailTo_PReg_Match; |
| 2105 | $MailTo_PReg_Match = '/mailto:' . substr($MailTo_PReg_Match, 1); |
| 2106 | if ((preg_match_all($MailTo_PReg_Match, $trusted, $regs)) && ($regs[0][0] != '')) { |
| 2107 | foreach ($regs[0] as $i => $mailto_before) { |
| 2108 | $mailto_params = $regs[10][$i]; |
| 2109 | // get rid of any tailing quote since we have to add send_to to the end |
| 2110 | // |
| 2111 | if (substr($mailto_before, strlen($mailto_before) - 1) == '"') |
| 2112 | $mailto_before = substr($mailto_before, 0, strlen($mailto_before) - 1); |
| 2113 | if (substr($mailto_params, strlen($mailto_params) - 1) == '"') |
| 2114 | $mailto_params = substr($mailto_params, 0, strlen($mailto_params) - 1); |
| 2115 | |
| 2116 | if ($regs[1][$i]) { //if there is an email addr before '?', we need to merge it with the params |
| 2117 | $to = 'to=' . $regs[1][$i]; |
| 2118 | if (strpos($mailto_params, 'to=') > -1) //already a 'to=' |
| 2119 | $mailto_params = str_replace('to=', $to . '%2C%20', $mailto_params); |
| 2120 | else { |
| 2121 | if ($mailto_params) //already some params, append to them |
| 2122 | $mailto_params .= '&' . $to; |
| 2123 | else |
| 2124 | $mailto_params .= '?' . $to; |
| 2125 | } |
| 2126 | } |
| 2127 | |
| 2128 | $url_str = preg_replace(array('/to=/i', '/(?<!b)cc=/i', '/bcc=/i'), array('send_to=', 'send_to_cc=', 'send_to_bcc='), $mailto_params); |
| 2129 | |
| 2130 | // we'll already have target=_blank, no need to allow comp_in_new |
| 2131 | // here (which would be a lot more work anyway) |
| 2132 | // |
| 2133 | global $compose_new_win; |
| 2134 | $temp_comp_in_new = $compose_new_win; |
| 2135 | $compose_new_win = 0; |
| 2136 | $comp_uri = makeComposeLink('src/compose.php' . $url_str, $mailto_before); |
| 2137 | $compose_new_win = $temp_comp_in_new; |
| 2138 | |
| 2139 | // remove <a href=" and anything after the next quote (we only |
| 2140 | // need the uri, not the link HTML) in compose uri |
| 2141 | // |
| 2142 | $comp_uri = substr($comp_uri, 9); |
| 2143 | $comp_uri = substr($comp_uri, 0, strpos($comp_uri, '"', 1)); |
| 2144 | $trusted = str_replace($mailto_before, $comp_uri, $trusted); |
| 2145 | } |
| 2146 | } |
| 2147 | } |
| 2148 | |
| 691a2d25 |
2149 | return $trusted; |
| 451f74a2 |
2150 | } |
| a4a70693 |
2151 | |
| da2415c1 |
2152 | /** |
| 8bd0068d |
2153 | * function SendDownloadHeaders - send file to the browser |
| 2154 | * |
| 2155 | * Original Source: SM core src/download.php |
| 2156 | * moved here to make it available to other code, and separate |
| 2157 | * front end from back end functionality. |
| 2158 | * |
| 2159 | * @param string $type0 first half of mime type |
| 2160 | * @param string $type1 second half of mime type |
| 2161 | * @param string $filename filename to tell the browser for downloaded file |
| 2162 | * @param boolean $force whether to force the download dialog to pop |
| 2163 | * @param optional integer $filesize send the Content-Header and length to the browser |
| 2164 | * @return void |
| 2165 | */ |
| 02474e43 |
2166 | function SendDownloadHeaders($type0, $type1, $filename, $force, $filesize=0) { |
| 2167 | global $languages, $squirrelmail_language; |
| 2168 | $isIE = $isIE6 = 0; |
| 2169 | |
| 2170 | sqgetGlobalVar('HTTP_USER_AGENT', $HTTP_USER_AGENT, SQ_SERVER); |
| 2171 | |
| 2172 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false && |
| 8bd0068d |
2173 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
| 02474e43 |
2174 | $isIE = 1; |
| 2175 | } |
| 2176 | |
| 2177 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE 6') !== false && |
| 8bd0068d |
2178 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
| 02474e43 |
2179 | $isIE6 = 1; |
| 2180 | } |
| 2181 | |
| 2182 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
2183 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename')) { |
| 02474e43 |
2184 | $filename = |
| 8bd0068d |
2185 | call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename', $filename, $HTTP_USER_AGENT); |
| 02474e43 |
2186 | } else { |
| 2187 | $filename = ereg_replace('[\\/:\*\?"<>\|;]', '_', str_replace(' ', ' ', $filename)); |
| 2188 | } |
| 2189 | |
| 2190 | // A Pox on Microsoft and it's Internet Explorer! |
| 2191 | // |
| 2192 | // IE has lots of bugs with file downloads. |
| 2193 | // It also has problems with SSL. Both of these cause problems |
| 2194 | // for us in this function. |
| 2195 | // |
| 2196 | // See this article on Cache Control headers and SSL |
| 2197 | // http://support.microsoft.com/default.aspx?scid=kb;en-us;323308 |
| 2198 | // |
| 2199 | // The best thing you can do for IE is to upgrade to the latest |
| 2200 | // version |
| 2201 | //set all the Cache Control Headers for IE |
| 2202 | if ($isIE) { |
| 2203 | $filename=rawurlencode($filename); |
| 2204 | header ("Pragma: public"); |
| 8bd0068d |
2205 | header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); // HTTP/1.1 |
| 02474e43 |
2206 | header ("Cache-Control: post-check=0, pre-check=0", false); |
| 8bd0068d |
2207 | header ("Cache-Control: private"); |
| 02474e43 |
2208 | |
| 2209 | //set the inline header for IE, we'll add the attachment header later if we need it |
| 2210 | header ("Content-Disposition: inline; filename=$filename"); |
| 2211 | } |
| 2212 | |
| 2213 | if (!$force) { |
| 2214 | // Try to show in browser window |
| 2215 | header ("Content-Disposition: inline; filename=\"$filename\""); |
| 2216 | header ("Content-Type: $type0/$type1; name=\"$filename\""); |
| 2217 | } else { |
| 2218 | // Try to pop up the "save as" box |
| 2219 | |
| 2220 | // IE makes this hard. It pops up 2 save boxes, or none. |
| 2221 | // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP |
| 2222 | // http://support.microsoft.com/default.aspx?scid=kb;EN-US;260519 |
| 2223 | // But, according to Microsoft, it is "RFC compliant but doesn't |
| 2224 | // take into account some deviations that allowed within the |
| 2225 | // specification." Doesn't that mean RFC non-compliant? |
| 2226 | // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP |
| 2227 | |
| 2228 | // all browsers need the application/octet-stream header for this |
| 2229 | header ("Content-Type: application/octet-stream; name=\"$filename\""); |
| 2230 | |
| 2231 | // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp |
| 2232 | // Do not have quotes around filename, but that applied to |
| 2233 | // "attachment"... does it apply to inline too? |
| 2234 | header ("Content-Disposition: attachment; filename=\"$filename\""); |
| 2235 | |
| 2236 | if ($isIE && !$isIE6) { |
| 2237 | // This combination seems to work mostly. IE 5.5 SP 1 has |
| 2238 | // known issues (see the Microsoft Knowledge Base) |
| 2239 | |
| 2240 | // This works for most types, but doesn't work with Word files |
| 2241 | header ("Content-Type: application/download; name=\"$filename\""); |
| 2242 | |
| 2243 | // These are spares, just in case. :-) |
| 2244 | //header("Content-Type: $type0/$type1; name=\"$filename\""); |
| 2245 | //header("Content-Type: application/x-msdownload; name=\"$filename\""); |
| 2246 | //header("Content-Type: application/octet-stream; name=\"$filename\""); |
| 2247 | } else { |
| 2248 | // another application/octet-stream forces download for Netscape |
| 2249 | header ("Content-Type: application/octet-stream; name=\"$filename\""); |
| 2250 | } |
| 2251 | } |
| 2252 | |
| 2253 | //send the content-length header if the calling function provides it |
| 2254 | if ($filesize > 0) { |
| 2255 | header("Content-Length: $filesize"); |
| 2256 | } |
| 07c49f57 |
2257 | |
| 8d863f64 |
2258 | } // end fn SendDownloadHeaders |
| da2415c1 |
2259 | |
| bc017c1d |
2260 | ?> |
projects / squirrelmail.git / blame