| 59177427 |
1 | <?php |
| 2ba13803 |
2 | |
| 35586184 |
3 | /** |
| 8bd0068d |
4 | * mime.php |
| 5 | * |
| 8bd0068d |
6 | * This contains the functions necessary to detect and decode MIME |
| 7 | * messages. |
| 8 | * |
| 47ccfad4 |
9 | * @copyright © 1999-2006 The SquirrelMail Project Team |
| 4b4abf93 |
10 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
| 8bd0068d |
11 | * @version $Id$ |
| 12 | * @package squirrelmail |
| 13 | */ |
| b74ba498 |
14 | |
| d6c32258 |
15 | /** The typical includes... */ |
| b68edc75 |
16 | require_once(SM_PATH . 'functions/imap.php'); |
| 17 | require_once(SM_PATH . 'functions/attachment_common.php'); |
| 2c25d36a |
18 | /** add sqm_baseuri()*/ |
| 19 | include_once(SM_PATH . 'functions/display_messages.php'); |
| 8beafbbc |
20 | |
| 7c7b74b3 |
21 | /* -------------------------------------------------------------------------- */ |
| 22 | /* MIME DECODING */ |
| 23 | /* -------------------------------------------------------------------------- */ |
| b74ba498 |
24 | |
| d6c32258 |
25 | /** |
| 8bd0068d |
26 | * Get the MIME structure |
| 27 | * |
| 28 | * This function gets the structure of a message and stores it in the "message" class. |
| 29 | * It will return this object for use with all relevant header information and |
| 30 | * fully parsed into the standard "message" object format. |
| 31 | */ |
| a4a70693 |
32 | function mime_structure ($bodystructure, $flags=array()) { |
| c9d78ab4 |
33 | |
| 3d8371be |
34 | /* Isolate the body structure and remove beginning and end parenthesis. */ |
| a4a70693 |
35 | $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13)); |
| 451f74a2 |
36 | $read = trim(substr ($read, 0, -1)); |
| 22efa9fb |
37 | $i = 0; |
| 38 | $msg = Message::parseStructure($read,$i); |
| 9de42168 |
39 | if (!is_object($msg)) { |
| bd9c880b |
40 | include_once(SM_PATH . 'functions/display_messages.php'); |
| 3d8371be |
41 | global $color, $mailbox; |
| c96c32f4 |
42 | /* removed urldecode because $_GET is auto urldecoded ??? */ |
| a48eba8f |
43 | displayPageHeader( $color, $mailbox ); |
| 5e8de8b6 |
44 | $errormessage = _("SquirrelMail could not decode the bodystructure of the message"); |
| 8bd0068d |
45 | $errormessage .= '<br />'._("The bodystructure provided by your IMAP server:").'<br /><br />'; |
| 472e7acb |
46 | $errormessage .= '<pre>' . htmlspecialchars($read) . '</pre>'; |
| 9de42168 |
47 | plain_error_message( $errormessage, $color ); |
| 3d8371be |
48 | echo '</body></html>'; |
| 9de42168 |
49 | exit; |
| 50 | } |
| a4a70693 |
51 | if (count($flags)) { |
| 7a9e9c89 |
52 | foreach ($flags as $flag) { |
| 53 | $char = strtoupper($flag{1}); |
| 54 | switch ($char) { |
| 3d8371be |
55 | case 'S': |
| 56 | if (strtolower($flag) == '\\seen') { |
| 57 | $msg->is_seen = true; |
| 58 | } |
| 59 | break; |
| 60 | case 'A': |
| 61 | if (strtolower($flag) == '\\answered') { |
| 62 | $msg->is_answered = true; |
| 63 | } |
| 64 | break; |
| 65 | case 'D': |
| 66 | if (strtolower($flag) == '\\deleted') { |
| 67 | $msg->is_deleted = true; |
| 68 | } |
| 69 | break; |
| 70 | case 'F': |
| 71 | if (strtolower($flag) == '\\flagged') { |
| 72 | $msg->is_flagged = true; |
| 73 | } |
| 74 | break; |
| 75 | case 'M': |
| 76 | if (strtolower($flag) == '$mdnsent') { |
| 77 | $msg->is_mdnsent = true; |
| 78 | } |
| 79 | break; |
| 80 | default: |
| 81 | break; |
| 7a9e9c89 |
82 | } |
| 83 | } |
| 451f74a2 |
84 | } |
| 7a9e9c89 |
85 | // listEntities($msg); |
| 3d8371be |
86 | return $msg; |
| 451f74a2 |
87 | } |
| b74ba498 |
88 | |
| 22efa9fb |
89 | |
| 90 | |
| 3d8371be |
91 | /* This starts the parsing of a particular structure. It is called recursively, |
| 8bd0068d |
92 | * so it can be passed different structures. It returns an object of type |
| 93 | * $message. |
| 94 | * First, it checks to see if it is a multipart message. If it is, then it |
| 95 | * handles that as it sees is necessary. If it is just a regular entity, |
| 96 | * then it parses it and adds the necessary header information (by calling out |
| 97 | * to mime_get_elements() |
| 98 | */ |
| 451f74a2 |
99 | |
| 4d592352 |
100 | function mime_fetch_body($imap_stream, $id, $ent_id=1, $fetch_size=0) { |
| 3d8371be |
101 | /* Do a bit of error correction. If we couldn't find the entity id, just guess |
| 8bd0068d |
102 | * that it is the first one. That is usually the case anyway. |
| 103 | */ |
| 7c7b74b3 |
104 | |
| 09a4bde3 |
105 | if (!$ent_id) { |
| 08b7f7cc |
106 | $cmd = "FETCH $id BODY[]"; |
| 1035e159 |
107 | } else { |
| 08b7f7cc |
108 | $cmd = "FETCH $id BODY[$ent_id]"; |
| 09a4bde3 |
109 | } |
| 3d8371be |
110 | |
| 4d592352 |
111 | if ($fetch_size!=0) $cmd .= "<0.$fetch_size>"; |
| da2415c1 |
112 | |
| 6201339c |
113 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message, TRUE); |
| 77b88425 |
114 | do { |
| 3d8371be |
115 | $topline = trim(array_shift($data)); |
| 116 | } while($topline && ($topline[0] == '*') && !preg_match('/\* [0-9]+ FETCH.*/i', $topline)) ; |
| a4a70693 |
117 | |
| 451f74a2 |
118 | $wholemessage = implode('', $data); |
| 119 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
| 3d8371be |
120 | $ret = substr($wholemessage, 0, $regs[1]); |
| 121 | /* There is some information in the content info header that could be important |
| 8bd0068d |
122 | * in order to parse html messages. Let's get them here. |
| 123 | */ |
| 0600bdf1 |
124 | // if ($ret{0} == '<') { |
| 6201339c |
125 | // $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message, TRUE); |
| 0600bdf1 |
126 | // } |
| 451f74a2 |
127 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
| 128 | $ret = $regs[1]; |
| 129 | } else { |
| 130 | global $where, $what, $mailbox, $passed_id, $startMessage; |
| 3d8371be |
131 | $par = 'mailbox=' . urlencode($mailbox) . '&passed_id=' . $passed_id; |
| 451f74a2 |
132 | if (isset($where) && isset($what)) { |
| 3d8371be |
133 | $par .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
| a3daaaf3 |
134 | } else { |
| 3d8371be |
135 | $par .= '&startMessage=' . $startMessage . '&show_more=0'; |
| 451f74a2 |
136 | } |
| e5ea9327 |
137 | $par .= '&response=' . urlencode($response) . |
| 8bd0068d |
138 | '&message=' . urlencode($message) . |
| 139 | '&topline=' . urlencode($topline); |
| a019eeb8 |
140 | |
| 8bd0068d |
141 | echo '<tt><br />' . |
| 02474e43 |
142 | '<table width="80%"><tr>' . |
| 143 | '<tr><td colspan="2">' . |
| 144 | _("Body retrieval error. The reason for this is most probably that the message is malformed.") . |
| 145 | '</td></tr>' . |
| 146 | '<tr><td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
| 147 | '<tr><td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
| 148 | '<tr><td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
| 149 | '<tr><td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
| 150 | "</table><br /></tt></font><hr />"; |
| 346817d4 |
151 | |
| 6201339c |
152 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message, TRUE); |
| 451f74a2 |
153 | array_shift($data); |
| 154 | $wholemessage = implode('', $data); |
| a019eeb8 |
155 | |
| 346817d4 |
156 | $ret = $wholemessage; |
| a3daaaf3 |
157 | } |
| 3d8371be |
158 | return $ret; |
| 451f74a2 |
159 | } |
| d4467150 |
160 | |
| 6cc670de |
161 | function mime_print_body_lines ($imap_stream, $id, $ent_id=1, $encoding, $rStream='php://stdout') { |
| 1035e159 |
162 | |
| 3d8371be |
163 | /* Don't kill the connection if the browser is over a dialup |
| 8bd0068d |
164 | * and it would take over 30 seconds to download it. |
| 165 | * Don't call set_time_limit in safe mode. |
| 166 | */ |
| b7206e1d |
167 | |
| 3d8371be |
168 | if (!ini_get('safe_mode')) { |
| b7206e1d |
169 | set_time_limit(0); |
| 170 | } |
| 7c7b74b3 |
171 | /* in case of base64 encoded attachments, do not buffer them. |
| 8bd0068d |
172 | Instead, echo the decoded attachment directly to screen */ |
| 7c7b74b3 |
173 | if (strtolower($encoding) == 'base64') { |
| 174 | if (!$ent_id) { |
| 7591f143 |
175 | $query = "FETCH $id BODY[]"; |
| 7c7b74b3 |
176 | } else { |
| 7591f143 |
177 | $query = "FETCH $id BODY[$ent_id]"; |
| 7c7b74b3 |
178 | } |
| 7591f143 |
179 | sqimap_run_command($imap_stream,$query,true,$response,$message,TRUE,'sqimap_base64_decode',$rStream,true); |
| 1d142b8d |
180 | } else { |
| 7591f143 |
181 | $body = mime_fetch_body ($imap_stream, $id, $ent_id); |
| 182 | if (is_resource($rStream)) { |
| 183 | fputs($rStream,decodeBody($body,$encoding)); |
| 184 | } else { |
| 185 | echo decodeBody($body, $encoding); |
| 186 | } |
| 1d142b8d |
187 | } |
| 346817d4 |
188 | |
| da2415c1 |
189 | /* |
| 8bd0068d |
190 | TODO, use the same method for quoted printable. |
| 191 | However, I assume that quoted printable attachments aren't that large |
| 192 | so the performancegain / memory usage drop will be minimal. |
| 193 | If we decide to add that then we need to adapt sqimap_fread because |
| 194 | we need to split te result on \n and fread doesn't stop at \n. That |
| 195 | means we also should provide $results from sqimap_fread (by ref) to |
| 196 | te function and set $no_return to false. The $filter function for |
| 197 | quoted printable should handle unsetting of $results. |
| 198 | */ |
| da2415c1 |
199 | /* |
| 8bd0068d |
200 | TODO 2: find out how we write to the output stream php://stdout. fwrite |
| 201 | doesn't work because 'php://stdout isn't a stream. |
| 202 | */ |
| 7c7b74b3 |
203 | |
| 5d9c6f73 |
204 | return; |
| 451f74a2 |
205 | } |
| beb9e459 |
206 | |
| 451f74a2 |
207 | /* -[ END MIME DECODING ]----------------------------------------------------------- */ |
| d4467150 |
208 | |
| 3d8371be |
209 | /* This is here for debugging purposes. It will print out a list |
| 8bd0068d |
210 | * of all the entity IDs that are in the $message object. |
| 211 | */ |
| 451f74a2 |
212 | function listEntities ($message) { |
| 3d8371be |
213 | if ($message) { |
| 3c621ba1 |
214 | echo "<tt>" . $message->entity_id . ' : ' . $message->type0 . '/' . $message->type1 . ' parent = '. $message->parent->entity_id. '<br />'; |
| 3d8371be |
215 | for ($i = 0; isset($message->entities[$i]); $i++) { |
| 216 | echo "$i : "; |
| 217 | $msg = listEntities($message->entities[$i]); |
| 218 | |
| 219 | if ($msg) { |
| 220 | echo "return: "; |
| 221 | return $msg; |
| 222 | } |
| 223 | } |
| a4a70693 |
224 | } |
| 451f74a2 |
225 | } |
| f0c4dc12 |
226 | |
| f792c641 |
227 | function getPriorityStr($priority) { |
| 3d8371be |
228 | $priority_level = substr($priority,0,1); |
| 229 | |
| 230 | switch($priority_level) { |
| 231 | /* Check for a higher then normal priority. */ |
| 232 | case '1': |
| 233 | case '2': |
| 234 | $priority_string = _("High"); |
| 235 | break; |
| 236 | |
| 237 | /* Check for a lower then normal priority. */ |
| 238 | case '4': |
| 239 | case '5': |
| 240 | $priority_string = _("Low"); |
| 241 | break; |
| 242 | |
| 243 | /* Check for a normal priority. */ |
| 244 | case '3': |
| 245 | default: |
| 246 | $priority_level = '3'; |
| 247 | $priority_string = _("Normal"); |
| 248 | break; |
| 249 | |
| 250 | } |
| 251 | return $priority_string; |
| f792c641 |
252 | } |
| 253 | |
| 451f74a2 |
254 | /* returns a $message object for a particular entity id */ |
| 255 | function getEntity ($message, $ent_id) { |
| a4a70693 |
256 | return $message->getEntity($ent_id); |
| 451f74a2 |
257 | } |
| 8beafbbc |
258 | |
| 3d8371be |
259 | /* translateText |
| 8bd0068d |
260 | * Extracted from strings.php 23/03/2002 |
| 261 | */ |
| da4c66e8 |
262 | |
| 263 | function translateText(&$body, $wrap_at, $charset) { |
| 3d8371be |
264 | global $where, $what; /* from searching */ |
| 265 | global $color; /* color theme */ |
| da4c66e8 |
266 | |
| b68edc75 |
267 | require_once(SM_PATH . 'functions/url_parser.php'); |
| da4c66e8 |
268 | |
| 269 | $body_ary = explode("\n", $body); |
| da4c66e8 |
270 | for ($i=0; $i < count($body_ary); $i++) { |
| 271 | $line = $body_ary[$i]; |
| 272 | if (strlen($line) - 2 >= $wrap_at) { |
| c7aff938 |
273 | sqWordWrap($line, $wrap_at, $charset); |
| da4c66e8 |
274 | } |
| 275 | $line = charset_decode($charset, $line); |
| 276 | $line = str_replace("\t", ' ', $line); |
| 277 | |
| 278 | parseUrl ($line); |
| 279 | |
| 3d8371be |
280 | $quotes = 0; |
| da4c66e8 |
281 | $pos = 0; |
| 3d8371be |
282 | $j = strlen($line); |
| da4c66e8 |
283 | |
| 3d8371be |
284 | while ($pos < $j) { |
| da4c66e8 |
285 | if ($line[$pos] == ' ') { |
| 3d8371be |
286 | $pos++; |
| da4c66e8 |
287 | } else if (strpos($line, '>', $pos) === $pos) { |
| 288 | $pos += 4; |
| 3d8371be |
289 | $quotes++; |
| da4c66e8 |
290 | } else { |
| 291 | break; |
| 292 | } |
| 293 | } |
| 3d8371be |
294 | |
| 83c94382 |
295 | if ($quotes % 2) { |
| 3d8371be |
296 | if (!isset($color[13])) { |
| da4c66e8 |
297 | $color[13] = '#800000'; |
| 298 | } |
| 4c25967c |
299 | $line = '<font color="' . $color[13] . '">' . $line . '</font>'; |
| 300 | } elseif ($quotes) { |
| 301 | if (!isset($color[14])) { |
| 302 | $color[14] = '#FF0000'; |
| 303 | } |
| 304 | $line = '<font color="' . $color[14] . '">' . $line . '</font>'; |
| da4c66e8 |
305 | } |
| 3d8371be |
306 | |
| da4c66e8 |
307 | $body_ary[$i] = $line; |
| 308 | } |
| 309 | $body = '<pre>' . implode("\n", $body_ary) . '</pre>'; |
| 310 | } |
| 311 | |
| a2bfcbce |
312 | /** |
| da1b55ad |
313 | * This returns a parsed string called $body. That string can then |
| 314 | * be displayed as the actual message in the HTML. It contains |
| 315 | * everything needed, including HTML Tags, Attachments at the |
| 316 | * bottom, etc. |
| f8a1ed5a |
317 | * |
| da1b55ad |
318 | * Since 1.2.0 function uses message_body hook. |
| 319 | * Till 1.3.0 function included output of formatAttachments(). |
| 320 | * |
| 321 | * @param resource $imap_stream imap connection resource |
| 322 | * @param object $message squirrelmail message object |
| 323 | * @param array $color squirrelmail color theme array |
| 324 | * @param integer $wrap_at number of characters per line |
| 325 | * @param string $ent_num (since 1.3.0) message part id |
| 326 | * @param integer $id (since 1.3.0) message id |
| 327 | * @param string $mailbox (since 1.3.0) imap folder name |
| 41f701c1 |
328 | * @param boolean $clean (since 1.5.1) Do not output stuff that's irrelevant for the printable version. |
| da1b55ad |
329 | * @return string html formated message text |
| 330 | */ |
| a2bfcbce |
331 | function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num, $id, $mailbox='INBOX', $clean=FALSE) { |
| 3d8371be |
332 | /* This if statement checks for the entity to show as the |
| 8bd0068d |
333 | * primary message. To add more of them, just put them in the |
| 334 | * order that is their priority. |
| 335 | */ |
| ce68b76b |
336 | global $startMessage, $languages, $squirrelmail_language, |
| 40a34e57 |
337 | $show_html_default, $sort, $has_unsafe_images, $passed_ent_id, |
| 338 | $use_iframe, $iframe_height, $download_and_unsafe_link; |
| 2c25d36a |
339 | |
| 340 | // workaround for not updated config.php |
| 341 | if (! isset($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 | */ |
| 758a7889 |
391 | $html_body = magicHTML($body, $id, $message, $mailbox); |
| b6c52e61 |
392 | // Convert character set in order to display html mails in different character set |
| 393 | $html_body = charset_decode($body_message->header->getParameter('charset'),$html_body,false,true); |
| 84410f31 |
394 | |
| 2c25d36a |
395 | // creating iframe url |
| 396 | $iframeurl=sqm_baseuri().'src/view_html.php?' |
| f8a1ed5a |
397 | . 'mailbox=' . $urlmailbox |
| 2c25d36a |
398 | . '&passed_id=' . $id |
| 399 | . '&ent_id=' . $ent_num |
| 400 | . '&view_unsafe_images=' . (int) $view_unsafe_images; |
| 401 | |
| 402 | // adding warning message |
| 403 | $body = html_tag('div',_("Viewing HTML formatted email"),'center'); |
| 404 | |
| 405 | /** |
| f8a1ed5a |
406 | * height can't be set to 100%, because it does not work as expected when |
| 407 | * iframe is inside the table. Browsers do not create full height objects |
| 408 | * even when iframe is not nested. Maybe there is some way to get full size |
| 2c25d36a |
409 | * with CSS. Tested in firefox 1.02 and opera 7.53 |
| 410 | * |
| 411 | * width="100%" does not work as expected, when table width is not set (automatic) |
| 412 | * |
| 413 | * tokul: I think <iframe> are safer sandbox than <object>. Objects might |
| 414 | * need special handling for IE and IE6SP2. |
| 415 | */ |
| 416 | $body.= "<div><iframe name=\"message_frame\" width=\"100%\" height=\"$iframe_height\" src=\"$iframeurl\"" |
| 5d374baf |
417 | .' frameborder="1" marginwidth="0" marginheight="0" scrolling="auto">' . "\n"; |
| 2c25d36a |
418 | |
| 419 | // Message for browsers without iframe support |
| f8a1ed5a |
420 | //$body.= _("Your browser does not support inline frames. |
| 84410f31 |
421 | // You can view HTML formated message by following below link."); |
| f8a1ed5a |
422 | //$body.= "<br /><a href=\"$iframeurl\">"._("View HTML Message")."</a>"; |
| 84410f31 |
423 | |
| 424 | // if browser can't render iframe, it renders html message. |
| 425 | $body.= $html_body; |
| 2c25d36a |
426 | |
| 427 | // close iframe |
| 428 | $body.="</iframe></div>\n"; |
| a3daaaf3 |
429 | } else { |
| 2c25d36a |
430 | // old way of html rendering |
| f8a1ed5a |
431 | $body = magicHTML($body, $id, $message, $mailbox); |
| b6c52e61 |
432 | /** |
| 758a7889 |
433 | * convert character set. charset_decode does not remove html special chars |
| b6c52e61 |
434 | * applied by magicHTML functions and does not sanitize them second time if |
| 758a7889 |
435 | * fourth argument is true. |
| 436 | */ |
| b6c52e61 |
437 | $body = charset_decode($body_message->header->getParameter('charset'),$body,false,true); |
| a3daaaf3 |
438 | } |
| 451f74a2 |
439 | } else { |
| 3d8371be |
440 | translateText($body, $wrap_at, |
| 8bd0068d |
441 | $body_message->header->getParameter('charset')); |
| 451f74a2 |
442 | } |
| a2bfcbce |
443 | |
| 444 | // if this is the clean display (i.e. printer friendly), stop here. |
| 445 | if ( $clean ) { |
| 446 | return $body; |
| 447 | } |
| 448 | |
| 40a34e57 |
449 | $download_and_unsafe_link = ''; |
| 450 | |
| 83cf04bd |
451 | $link = 'passed_id=' . $id . '&ent_id='.$ent_num. |
| 8bd0068d |
452 | '&mailbox=' . $urlmailbox .'&sort=' . $sort . |
| 453 | '&startMessage=' . $startMessage . '&show_more=0'; |
| 08b7f7cc |
454 | if (isset($passed_ent_id)) { |
| 455 | $link .= '&passed_ent_id='.$passed_ent_id; |
| 456 | } |
| 40a34e57 |
457 | $download_and_unsafe_link .= ' | <a href="download.php?absolute_dl=true&' . |
| 8bd0068d |
458 | $link . '">' . _("Download this as a file") . '</a>'; |
| 7aad7b77 |
459 | if ($view_unsafe_images) { |
| 23f617b8 |
460 | $text = _("Hide Unsafe Images"); |
| 7aad7b77 |
461 | } else { |
| 08b7f7cc |
462 | if (isset($has_unsafe_images) && $has_unsafe_images) { |
| 463 | $link .= '&view_unsafe_images=1'; |
| 464 | $text = _("View Unsafe Images"); |
| 465 | } else { |
| 466 | $text = ''; |
| 467 | } |
| 3d8371be |
468 | } |
| 83cf04bd |
469 | if($text != '') { |
| 40a34e57 |
470 | $download_and_unsafe_link .= ' | <a href="read_body.php?' . $link . '">' . $text . '</a>'; |
| 83cf04bd |
471 | } |
| 3d8371be |
472 | } |
| 473 | return $body; |
| 451f74a2 |
474 | } |
| b74ba498 |
475 | |
| da1b55ad |
476 | /** |
| 477 | * Displays attachment links and information |
| da1b55ad |
478 | * |
| 479 | * Since 1.3.0 function is not included in formatBody() call. |
| 480 | * |
| 481 | * Since 1.0.2 uses attachment $type0/$type1 hook. |
| 482 | * Since 1.2.5 uses attachment $type0/* hook. |
| 483 | * Since 1.5.0 uses attachments_bottom hook. |
| f8a1ed5a |
484 | * |
| da1b55ad |
485 | * @param object $message SquirrelMail message object |
| 486 | * @param array $exclude_id message parts that are not attachments. |
| 487 | * @param string $mailbox mailbox name |
| 488 | * @param integer $id message id |
| 489 | * @return string html formated attachment information. |
| 490 | */ |
| 23bcec6f |
491 | function formatAttachments($message, $exclude_id, $mailbox, $id) { |
| 80dcd298 |
492 | global $where, $what, $startMessage, $color, $passed_ent_id; |
| 451f74a2 |
493 | |
| 23bcec6f |
494 | $att_ar = $message->getAttachments($exclude_id); |
| 451f74a2 |
495 | |
| 23bcec6f |
496 | if (!count($att_ar)) return ''; |
| 2e25760a |
497 | |
| 8f5425ec |
498 | $attachments = ''; |
| 2e25760a |
499 | |
| 23bcec6f |
500 | $urlMailbox = urlencode($mailbox); |
| 501 | |
| 502 | foreach ($att_ar as $att) { |
| fdc9d9b5 |
503 | $ent = $att->entity_id; |
| 2e25760a |
504 | $header = $att->header; |
| f0c4dc12 |
505 | $type0 = strtolower($header->type0); |
| 506 | $type1 = strtolower($header->type1); |
| 2e25760a |
507 | $name = ''; |
| 21dab2dc |
508 | $links['download link']['text'] = _("Download"); |
| 2c25d36a |
509 | $links['download link']['href'] = sqm_baseuri() . |
| 8bd0068d |
510 | "src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&ent_id=$ent"; |
| 2e25760a |
511 | if ($type0 =='message' && $type1 == 'rfc822') { |
| 2c25d36a |
512 | $default_page = sqm_baseuri() . 'src/read_body.php'; |
| 2e25760a |
513 | $rfc822_header = $att->rfc822_header; |
| 098ea084 |
514 | $filename = $rfc822_header->subject; |
| 6cc08d8b |
515 | if (trim( $filename ) == '') { |
| 516 | $filename = 'untitled-[' . $ent . ']' ; |
| 08b7f7cc |
517 | } |
| 2e25760a |
518 | $from_o = $rfc822_header->from; |
| 519 | if (is_object($from_o)) { |
| 04ea844e |
520 | $from_name = decodeHeader($from_o->getAddress(false)); |
| 2e25760a |
521 | } else { |
| 522 | $from_name = _("Unknown sender"); |
| f0c4dc12 |
523 | } |
| 3d8371be |
524 | $description = $from_name; |
| 23bcec6f |
525 | } else { |
| 2c25d36a |
526 | $default_page = sqm_baseuri() . 'src/download.php'; |
| 02474e43 |
527 | $filename = $att->getFilename(); |
| f810c0b2 |
528 | if ($header->description) { |
| 098ea084 |
529 | $description = decodeHeader($header->description); |
| f810c0b2 |
530 | } else { |
| 3d8371be |
531 | $description = ''; |
| 532 | } |
| 2e25760a |
533 | } |
| 534 | |
| 535 | $display_filename = $filename; |
| 3d8371be |
536 | if (isset($passed_ent_id)) { |
| 537 | $passed_ent_id_link = '&passed_ent_id='.$passed_ent_id; |
| 538 | } else { |
| 539 | $passed_ent_id_link = ''; |
| 540 | } |
| 541 | $defaultlink = $default_page . "?startMessage=$startMessage" |
| 8bd0068d |
542 | . "&passed_id=$id&mailbox=$urlMailbox" |
| 543 | . '&ent_id='.$ent.$passed_ent_id_link; |
| 2e25760a |
544 | if ($where && $what) { |
| 8bd0068d |
545 | $defaultlink .= '&where='. urlencode($where).'&what='.urlencode($what); |
| 2e25760a |
546 | } |
| 21dab2dc |
547 | |
| 3d8371be |
548 | /* This executes the attachment hook with a specific MIME-type. |
| 8bd0068d |
549 | * If that doesn't have results, it tries if there's a rule |
| 550 | * for a more generic type. |
| 551 | */ |
| 3d8371be |
552 | $hookresults = do_hook("attachment $type0/$type1", $links, |
| 8bd0068d |
553 | $startMessage, $id, $urlMailbox, $ent, $defaultlink, |
| 554 | $display_filename, $where, $what); |
| 3d8371be |
555 | if(count($hookresults[1]) <= 1) { |
| 556 | $hookresults = do_hook("attachment $type0/*", $links, |
| 8bd0068d |
557 | $startMessage, $id, $urlMailbox, $ent, $defaultlink, |
| 558 | $display_filename, $where, $what); |
| 2e25760a |
559 | } |
| 451f74a2 |
560 | |
| 3d8371be |
561 | $links = $hookresults[1]; |
| 562 | $defaultlink = $hookresults[6]; |
| 77b88425 |
563 | |
| 3c621ba1 |
564 | $attachments .= '<tr><td>' . |
| 8bd0068d |
565 | '<a href="'.$defaultlink.'">'.decodeHeader($display_filename).'</a> </td>' . |
| 566 | '<td><small><b>' . show_readable_size($header->size) . |
| 567 | '</b> </small></td>' . |
| 568 | '<td><small>[ '.htmlspecialchars($type0).'/'.htmlspecialchars($type1).' ] </small></td>' . |
| 569 | '<td><small>'; |
| f810c0b2 |
570 | $attachments .= '<b>' . $description . '</b>'; |
| 3c621ba1 |
571 | $attachments .= '</small></td><td><small> '; |
| b74ba498 |
572 | |
| 3d8371be |
573 | $skipspaces = 1; |
| 574 | foreach ($links as $val) { |
| 575 | if ($skipspaces) { |
| 576 | $skipspaces = 0; |
| 2e25760a |
577 | } else { |
| 578 | $attachments .= ' | '; |
| 77b88425 |
579 | } |
| f8a1ed5a |
580 | $attachments .= '<a href="' . $val['href'] . '">' |
| 581 | . (isset($val['text']) && !empty($val['text']) ? $val['text'] : '') |
| 582 | . (isset($val['extra']) && !empty($val['extra']) ? $val['extra'] : '') |
| 2c25d36a |
583 | . '</a>'; |
| 2e25760a |
584 | } |
| 3d8371be |
585 | unset($links); |
| 3c621ba1 |
586 | $attachments .= "</td></tr>\n"; |
| 2e25760a |
587 | } |
| 9ad17edb |
588 | $attachmentadd = do_hook_function('attachments_bottom',$attachments); |
| 589 | if ($attachmentadd != '') |
| 590 | $attachments = $attachmentadd; |
| 2e25760a |
591 | return $attachments; |
| 451f74a2 |
592 | } |
| b74ba498 |
593 | |
| 7c7b74b3 |
594 | function sqimap_base64_decode(&$string) { |
| 7c0ec1d8 |
595 | |
| b17a8968 |
596 | // Base64 encoded data goes in pairs of 4 bytes. To achieve on the |
| 7c0ec1d8 |
597 | // fly decoding (to reduce memory usage) you have to check if the |
| 598 | // data has incomplete pairs |
| 599 | |
| b17a8968 |
600 | // Remove the noise in order to check if the 4 bytes pairs are complete |
| 7c0ec1d8 |
601 | $string = str_replace(array("\r\n","\n", "\r", " "),array('','','',''),$string); |
| 602 | |
| 42ce44f8 |
603 | $sStringRem = ''; |
| 7c0ec1d8 |
604 | $iMod = strlen($string) % 4; |
| 605 | if ($iMod) { |
| 606 | $sStringRem = substr($string,-$iMod); |
| b17a8968 |
607 | // Check if $sStringRem contains padding characters |
| 7c0ec1d8 |
608 | if (substr($sStringRem,-1) != '=') { |
| 609 | $string = substr($string,0,-$iMod); |
| 610 | } else { |
| 611 | $sStringRem = ''; |
| 612 | } |
| 613 | } |
| 7c7b74b3 |
614 | $string = base64_decode($string); |
| 7c0ec1d8 |
615 | return $sStringRem; |
| 7c7b74b3 |
616 | } |
| 617 | |
| fdf7cef1 |
618 | /** |
| 619 | * Decodes encoded message body |
| 620 | * |
| 621 | * This function decodes the body depending on the encoding type. |
| 622 | * Currently quoted-printable and base64 encodings are supported. |
| 623 | * decode_body hook was added to this function in 1.4.2/1.5.0 |
| 624 | * @param string $body encoded message body |
| 625 | * @param string $encoding used encoding |
| 626 | * @return string decoded string |
| 627 | * @since 1.0 |
| 628 | */ |
| 451f74a2 |
629 | function decodeBody($body, $encoding) { |
| 83be314a |
630 | |
| b583c3e8 |
631 | $body = str_replace("\r\n", "\n", $body); |
| 632 | $encoding = strtolower($encoding); |
| 3d8371be |
633 | |
| 5166f86a |
634 | $encoding_handler = do_hook_function('decode_body', $encoding); |
| 635 | |
| 636 | |
| 637 | // plugins get first shot at decoding the body |
| 638 | // |
| 639 | if (!empty($encoding_handler) && function_exists($encoding_handler)) { |
| 640 | $body = $encoding_handler('decode', $body); |
| 641 | |
| fdf7cef1 |
642 | } elseif ($encoding == 'quoted-printable' || |
| 8bd0068d |
643 | $encoding == 'quoted_printable') { |
| fdf7cef1 |
644 | /** |
| 645 | * quoted_printable_decode() function is broken in older |
| 646 | * php versions. Text with \r\n decoding was fixed only |
| 758a7889 |
647 | * in php 4.3.0. Minimal code requirement 4.0.4 + |
| fdf7cef1 |
648 | * str_replace("\r\n", "\n", $body); call. |
| 649 | */ |
| b583c3e8 |
650 | $body = quoted_printable_decode($body); |
| fdf7cef1 |
651 | } elseif ($encoding == 'base64') { |
| b583c3e8 |
652 | $body = base64_decode($body); |
| 653 | } |
| 3d8371be |
654 | |
| b583c3e8 |
655 | // All other encodings are returned raw. |
| 3d8371be |
656 | return $body; |
| 451f74a2 |
657 | } |
| 658 | |
| 9f7f68c3 |
659 | /** |
| 8bd0068d |
660 | * Decodes headers |
| 661 | * |
| 662 | * This functions decode strings that is encoded according to |
| 663 | * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). |
| 664 | * Patched by Christian Schmidt <christian@ostenfeld.dk> 23/03/2002 |
| 665 | * |
| 666 | * @param string $string header string that has to be made readable |
| 667 | * @param boolean $utfencode change message in order to be readable on user's charset. defaults to true |
| 668 | * @param boolean $htmlsave preserve spaces and sanitize html special characters. defaults to true |
| 669 | * @param boolean $decide decide if string can be utfencoded. defaults to false |
| 670 | * @return string decoded header string |
| 671 | */ |
| 9f7f68c3 |
672 | function decodeHeader ($string, $utfencode=true,$htmlsave=true,$decide=false) { |
| d6f584fc |
673 | global $languages, $squirrelmail_language,$default_charset; |
| 79e07c7e |
674 | if (is_array($string)) { |
| 675 | $string = implode("\n", $string); |
| 676 | } |
| da2415c1 |
677 | |
| 10dec454 |
678 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
679 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader')) { |
| 33a55f5a |
680 | $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decodeheader', $string); |
| 08b7f7cc |
681 | // Do we need to return at this point? |
| 682 | // return $string; |
| 83be314a |
683 | } |
| 79e07c7e |
684 | $i = 0; |
| 08b7f7cc |
685 | $iLastMatch = -2; |
| db65b6b0 |
686 | $encoded = true; |
| 0a06275a |
687 | |
| 098ea084 |
688 | $aString = explode(' ',$string); |
| 08b7f7cc |
689 | $ret = ''; |
| 098ea084 |
690 | foreach ($aString as $chunk) { |
| 358a78a1 |
691 | if ($encoded && $chunk === '') { |
| 08b7f7cc |
692 | continue; |
| 358a78a1 |
693 | } elseif ($chunk === '') { |
| 08b7f7cc |
694 | $ret .= ' '; |
| 695 | continue; |
| 696 | } |
| 098ea084 |
697 | $encoded = false; |
| 08b7f7cc |
698 | /* if encoded words are not separated by a linear-space-white we still catch them */ |
| 699 | $j = $i-1; |
| 7e6ca3e8 |
700 | |
| 08b7f7cc |
701 | while ($match = preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=(.*)$/Ui',$chunk,$res)) { |
| 702 | /* if the last chunk isn't an encoded string then put back the space, otherwise don't */ |
| 703 | if ($iLastMatch !== $j) { |
| 704 | if ($htmlsave) { |
| 9f7f68c3 |
705 | $ret .= ' '; |
| 08b7f7cc |
706 | } else { |
| 707 | $ret .= ' '; |
| 708 | } |
| 709 | } |
| 710 | $iLastMatch = $i; |
| 711 | $j = $i; |
| cb718de0 |
712 | if ($htmlsave) { |
| 713 | $ret .= htmlspecialchars($res[1]); |
| 714 | } else { |
| 715 | $ret .= $res[1]; |
| 716 | } |
| 098ea084 |
717 | $encoding = ucfirst($res[3]); |
| d6f584fc |
718 | |
| 719 | /* decide about valid decoding */ |
| 720 | if ($decide && is_conversion_safe($res[2])) { |
| 8bd0068d |
721 | $utfencode=true; |
| 722 | $can_be_encoded=true; |
| d6f584fc |
723 | } else { |
| 8bd0068d |
724 | $can_be_encoded=false; |
| d6f584fc |
725 | } |
| 098ea084 |
726 | switch ($encoding) |
| 727 | { |
| 8bd0068d |
728 | case 'B': |
| 729 | $replace = base64_decode($res[4]); |
| 730 | if ($utfencode) { |
| 731 | if ($can_be_encoded) { |
| 732 | /* convert string to different charset, |
| 733 | * if functions asks for it (usually in compose) |
| 734 | */ |
| 735 | $ret .= charset_convert($res[2],$replace,$default_charset); |
| 736 | } else { |
| 737 | // convert string to html codes in order to display it |
| 738 | $ret .= charset_decode($res[2],$replace); |
| 739 | } |
| fab65ca9 |
740 | } else { |
| 8bd0068d |
741 | if ($htmlsave) { |
| 742 | $replace = htmlspecialchars($replace); |
| 743 | } |
| 744 | $ret.= $replace; |
| fab65ca9 |
745 | } |
| 8bd0068d |
746 | break; |
| 747 | case 'Q': |
| 748 | $replace = str_replace('_', ' ', $res[4]); |
| 749 | $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))', |
| 750 | $replace); |
| 751 | if ($utfencode) { |
| 752 | if ($can_be_encoded) { |
| 753 | /* convert string to different charset, |
| 754 | * if functions asks for it (usually in compose) |
| 755 | */ |
| 756 | $replace = charset_convert($res[2], $replace,$default_charset); |
| 757 | } else { |
| 758 | // convert string to html codes in order to display it |
| 759 | $replace = charset_decode($res[2], $replace); |
| 760 | } |
| 761 | } else { |
| 762 | if ($htmlsave) { |
| 763 | $replace = htmlspecialchars($replace); |
| 764 | } |
| 098ea084 |
765 | } |
| 8bd0068d |
766 | $ret .= $replace; |
| 767 | break; |
| 768 | default: |
| 769 | break; |
| 79e07c7e |
770 | } |
| 098ea084 |
771 | $chunk = $res[5]; |
| 772 | $encoded = true; |
| 08b7f7cc |
773 | } |
| 774 | if (!$encoded) { |
| 775 | if ($htmlsave) { |
| 9f7f68c3 |
776 | $ret .= ' '; |
| 08b7f7cc |
777 | } else { |
| 778 | $ret .= ' '; |
| da2415c1 |
779 | } |
| 08b7f7cc |
780 | } |
| dc3d13a7 |
781 | |
| 782 | if (!$encoded && $htmlsave) { |
| 783 | $ret .= htmlspecialchars($chunk); |
| 784 | } else { |
| 785 | $ret .= $chunk; |
| 786 | } |
| 098ea084 |
787 | ++$i; |
| 788 | } |
| fd81e884 |
789 | /* remove the first added space */ |
| 790 | if ($ret) { |
| 791 | if ($htmlsave) { |
| 9f7f68c3 |
792 | $ret = substr($ret,5); |
| fd81e884 |
793 | } else { |
| 794 | $ret = substr($ret,1); |
| 795 | } |
| 796 | } |
| da2415c1 |
797 | |
| 08b7f7cc |
798 | return $ret; |
| 451f74a2 |
799 | } |
| 800 | |
| 9f7f68c3 |
801 | /** |
| a24cf710 |
802 | * Encodes header |
| 8bd0068d |
803 | * |
| a24cf710 |
804 | * Function uses XTRA_CODE _encodeheader function, if such function exists. |
| a24cf710 |
805 | * |
| 758a7889 |
806 | * Function uses Q encoding by default and encodes a string according to RFC |
| 807 | * 1522 for use in headers if it contains 8-bit characters or anything that |
| a24cf710 |
808 | * looks like it should be encoded. |
| 8bd0068d |
809 | * |
| 758a7889 |
810 | * Function switches to B encoding and encodeHeaderBase64() function, if |
| 811 | * string is 8bit and multibyte character set supported by mbstring extension |
| 812 | * is used. It can cause E_USER_NOTICE errors, if interface is used with |
| f270a6eb |
813 | * multibyte character set unsupported by mbstring extension. |
| 814 | * |
| 8bd0068d |
815 | * @param string $string header string, that has to be encoded |
| 816 | * @return string quoted-printable encoded string |
| f270a6eb |
817 | * @todo make $mb_charsets system wide constant |
| 8bd0068d |
818 | */ |
| 451f74a2 |
819 | function encodeHeader ($string) { |
| 6fbd125b |
820 | global $default_charset, $languages, $squirrelmail_language; |
| 83be314a |
821 | |
| 10dec454 |
822 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
823 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader')) { |
| 33a55f5a |
824 | return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_encodeheader', $string); |
| 83be314a |
825 | } |
| 793cc001 |
826 | |
| a24cf710 |
827 | // Use B encoding for multibyte charsets |
| f270a6eb |
828 | $mb_charsets = array('utf-8','big5','gb2313','euc-kr'); |
| 829 | if (in_array($default_charset,$mb_charsets) && |
| 830 | in_array($default_charset,sq_mb_list_encodings()) && |
| 831 | sq_is8bit($string)) { |
| 832 | return encodeHeaderBase64($string,$default_charset); |
| 833 | } elseif (in_array($default_charset,$mb_charsets) && |
| 834 | sq_is8bit($string) && |
| 835 | ! in_array($default_charset,sq_mb_list_encodings())) { |
| 836 | // Add E_USER_NOTICE error here (can cause 'Cannot add header information' warning in compose.php) |
| 837 | // trigger_error('encodeHeader: Multibyte character set unsupported by mbstring extension.',E_USER_NOTICE); |
| 838 | } |
| a24cf710 |
839 | |
| 451f74a2 |
840 | // Encode only if the string contains 8-bit characters or =? |
| 3d8371be |
841 | $j = strlen($string); |
| 098ea084 |
842 | $max_l = 75 - strlen($default_charset) - 7; |
| 843 | $aRet = array(); |
| 451f74a2 |
844 | $ret = ''; |
| c96c32f4 |
845 | $iEncStart = $enc_init = false; |
| 0d53f0f9 |
846 | $cur_l = $iOffset = 0; |
| 3d8371be |
847 | for($i = 0; $i < $j; ++$i) { |
| c96c32f4 |
848 | switch($string{$i}) |
| 849 | { |
| 8bd0068d |
850 | case '=': |
| 851 | case '<': |
| 852 | case '>': |
| 853 | case ',': |
| 854 | case '?': |
| 855 | case '_': |
| 856 | if ($iEncStart === false) { |
| 857 | $iEncStart = $i; |
| 858 | } |
| 859 | $cur_l+=3; |
| 860 | if ($cur_l > ($max_l-2)) { |
| 861 | /* if there is an stringpart that doesn't need encoding, add it */ |
| 08b7f7cc |
862 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| c96c32f4 |
863 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| 864 | $iOffset = $i; |
| 865 | $cur_l = 0; |
| 866 | $ret = ''; |
| 867 | $iEncStart = false; |
| 08b7f7cc |
868 | } else { |
| 8bd0068d |
869 | $ret .= sprintf("=%02X",ord($string{$i})); |
| c96c32f4 |
870 | } |
| 8bd0068d |
871 | break; |
| 872 | case '(': |
| 873 | case ')': |
| 874 | if ($iEncStart !== false) { |
| 08b7f7cc |
875 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 8bd0068d |
876 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| c96c32f4 |
877 | $iOffset = $i; |
| 8bd0068d |
878 | $cur_l = 0; |
| 879 | $ret = ''; |
| 880 | $iEncStart = false; |
| c96c32f4 |
881 | } |
| 8bd0068d |
882 | break; |
| 883 | case ' ': |
| c96c32f4 |
884 | if ($iEncStart !== false) { |
| 098ea084 |
885 | $cur_l++; |
| 886 | if ($cur_l > $max_l) { |
| 08b7f7cc |
887 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| c96c32f4 |
888 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| c96c32f4 |
889 | $iOffset = $i; |
| 890 | $cur_l = 0; |
| 098ea084 |
891 | $ret = ''; |
| 8bd0068d |
892 | $iEncStart = false; |
| 08b7f7cc |
893 | } else { |
| 8bd0068d |
894 | $ret .= '_'; |
| c96c32f4 |
895 | } |
| 3d8371be |
896 | } |
| 8bd0068d |
897 | break; |
| 898 | default: |
| 899 | $k = ord($string{$i}); |
| 900 | if ($k > 126) { |
| 901 | if ($iEncStart === false) { |
| 902 | // do not start encoding in the middle of a string, also take the rest of the word. |
| 903 | $sLeadString = substr($string,0,$i); |
| 904 | $aLeadString = explode(' ',$sLeadString); |
| 905 | $sToBeEncoded = array_pop($aLeadString); |
| 906 | $iEncStart = $i - strlen($sToBeEncoded); |
| 907 | $ret .= $sToBeEncoded; |
| 908 | $cur_l += strlen($sToBeEncoded); |
| 909 | } |
| 910 | $cur_l += 3; |
| 911 | /* first we add the encoded string that reached it's max size */ |
| 912 | if ($cur_l > ($max_l-2)) { |
| 913 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 914 | $aRet[] = "=?$default_charset?Q?$ret?= "; /* the next part is also encoded => separate by space */ |
| 915 | $cur_l = 3; |
| 916 | $ret = ''; |
| 917 | $iOffset = $i; |
| 918 | $iEncStart = $i; |
| 919 | } |
| 920 | $enc_init = true; |
| 921 | $ret .= sprintf("=%02X", $k); |
| 922 | } else { |
| 923 | if ($iEncStart !== false) { |
| 924 | $cur_l++; |
| 925 | if ($cur_l > $max_l) { |
| 926 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 927 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| 928 | $iEncStart = false; |
| 929 | $iOffset = $i; |
| 930 | $cur_l = 0; |
| 931 | $ret = ''; |
| 932 | } else { |
| 933 | $ret .= $string{$i}; |
| 934 | } |
| 935 | } |
| 936 | } |
| 937 | break; |
| f7b3ba37 |
938 | } |
| 451f74a2 |
939 | } |
| 793cc001 |
940 | |
| c96c32f4 |
941 | if ($enc_init) { |
| 942 | if ($iEncStart !== false) { |
| 943 | $aRet[] = substr($string,$iOffset,$iEncStart-$iOffset); |
| 944 | $aRet[] = "=?$default_charset?Q?$ret?="; |
| 945 | } else { |
| 946 | $aRet[] = substr($string,$iOffset); |
| 947 | } |
| 948 | $string = implode('',$aRet); |
| 451f74a2 |
949 | } |
| 3d8371be |
950 | return $string; |
| 451f74a2 |
951 | } |
| b74ba498 |
952 | |
| f270a6eb |
953 | /** |
| 954 | * Encodes string according to rfc2047 B encoding header formating rules |
| 955 | * |
| 758a7889 |
956 | * It is recommended way to encode headers with character sets that store |
| f270a6eb |
957 | * symbols in more than one byte. |
| 958 | * |
| 959 | * Function requires mbstring support. If required mbstring functions are missing, |
| 960 | * function returns false and sets E_USER_WARNING level error message. |
| 961 | * |
| 758a7889 |
962 | * Minimal requirements - php 4.0.6 with mbstring extension. Please note, |
| 963 | * that mbstring functions will generate E_WARNING errors, if unsupported |
| f270a6eb |
964 | * character set is used. mb_encode_mimeheader function provided by php |
| 965 | * mbstring extension is not used in order to get better control of header |
| 966 | * encoding. |
| 967 | * |
| 758a7889 |
968 | * Used php code functions - function_exists(), trigger_error(), strlen() |
| 969 | * (is used with charset names and base64 strings). Used php mbstring |
| f270a6eb |
970 | * functions - mb_strlen and mb_substr. |
| 971 | * |
| 758a7889 |
972 | * Related documents: rfc 2045 (BASE64 encoding), rfc 2047 (mime header |
| f270a6eb |
973 | * encoding), rfc 2822 (header folding) |
| 974 | * |
| 975 | * @param string $string header string that must be encoded |
| 758a7889 |
976 | * @param string $charset character set. Must be supported by mbstring extension. |
| f270a6eb |
977 | * Use sq_mb_list_encodings() to detect supported charsets. |
| 978 | * @return string string encoded according to rfc2047 B encoding formating rules |
| 979 | * @since 1.5.1 |
| 980 | * @todo First header line can be wrapped to $iMaxLength - $HeaderFieldLength - 1 |
| 981 | * @todo Do we want to control max length of header? |
| 982 | * @todo Do we want to control EOL (end-of-line) marker? |
| 983 | * @todo Do we want to translate error message? |
| 984 | */ |
| 985 | function encodeHeaderBase64($string,$charset) { |
| 986 | /** |
| 987 | * Check mbstring function requirements. |
| 988 | */ |
| 989 | if (! function_exists('mb_strlen') || |
| 990 | ! function_exists('mb_substr')) { |
| 991 | // set E_USER_WARNING |
| 992 | trigger_error('encodeHeaderBase64: Required mbstring functions are missing.',E_USER_WARNING); |
| 993 | // return false |
| 994 | return false; |
| 995 | } |
| 996 | |
| 997 | // initial return array |
| 998 | $aRet = array(); |
| 999 | |
| 1000 | /** |
| 1001 | * header length = 75 symbols max (same as in encodeHeader) |
| 1002 | * remove $charset length |
| 1003 | * remove =? ? ?= (5 chars) |
| 1004 | * remove 2 more chars (\r\n ?) |
| 1005 | */ |
| 1006 | $iMaxLength = 75 - strlen($charset) - 7; |
| 1007 | |
| 1008 | // set first character position |
| 1009 | $iStartCharNum = 0; |
| 1010 | |
| 1011 | // loop through all characters. count characters and not bytes. |
| 1012 | for ($iCharNum=1; $iCharNum<=mb_strlen($string,$charset); $iCharNum++) { |
| 1013 | // encode string from starting character to current character. |
| 1014 | $encoded_string = base64_encode(mb_substr($string,$iStartCharNum,$iCharNum-$iStartCharNum,$charset)); |
| 1015 | |
| 1016 | // Check encoded string length |
| 1017 | if(strlen($encoded_string)>$iMaxLength) { |
| 1018 | // if string exceeds max length, reduce number of encoded characters and add encoded string part to array |
| 1019 | $aRet[] = base64_encode(mb_substr($string,$iStartCharNum,$iCharNum-$iStartCharNum-1,$charset)); |
| 1020 | |
| 1021 | // set new starting character |
| 1022 | $iStartCharNum = $iCharNum-1; |
| 1023 | |
| 1024 | // encode last char (in case it is last character in string) |
| 1025 | $encoded_string = base64_encode(mb_substr($string,$iStartCharNum,$iCharNum-$iStartCharNum,$charset)); |
| 1026 | } // if string is shorter than max length - add next character |
| 1027 | } |
| 1028 | |
| 1029 | // add last encoded string to array |
| 1030 | $aRet[] = $encoded_string; |
| 1031 | |
| 1032 | // set initial return string |
| 1033 | $sRet = ''; |
| 1034 | |
| 1035 | // loop through encoded strings |
| 1036 | foreach($aRet as $string) { |
| 1037 | // TODO: Do we want to control EOL (end-of-line) marker |
| 1038 | if ($sRet!='') $sRet.= " "; |
| 1039 | |
| 1040 | // add header tags and encoded string to return string |
| 1041 | $sRet.= '=?'.$charset.'?B?'.$string.'?='; |
| 1042 | } |
| 1043 | |
| 1044 | return $sRet; |
| 1045 | } |
| 1046 | |
| 691a2d25 |
1047 | /* This function trys to locate the entity_id of a specific mime element */ |
| 3d8371be |
1048 | function find_ent_id($id, $message) { |
| a171b359 |
1049 | for ($i = 0, $ret = ''; $ret == '' && $i < count($message->entities); $i++) { |
| 1050 | if ($message->entities[$i]->header->type0 == 'multipart') { |
| 3d8371be |
1051 | $ret = find_ent_id($id, $message->entities[$i]); |
| 451f74a2 |
1052 | } else { |
| 3d8371be |
1053 | if (strcasecmp($message->entities[$i]->header->id, $id) == 0) { |
| d8cffbab |
1054 | // if (sq_check_save_extension($message->entities[$i])) { |
| 8bd0068d |
1055 | return $message->entities[$i]->entity_id; |
| da2415c1 |
1056 | // } |
| c8f5f606 |
1057 | } elseif (!empty($message->entities[$i]->header->parameters['name'])) { |
| 1058 | /** |
| 1059 | * This is part of a fix for Outlook Express 6.x generating |
| 1060 | * cid URLs without creating content-id headers |
| 1061 | * @@JA - 20050207 |
| 1062 | */ |
| 1063 | if (strcasecmp($message->entities[$i]->header->parameters['name'], $id) == 0) { |
| 1064 | return $message->entities[$i]->entity_id; |
| 1065 | } |
| 3d8371be |
1066 | } |
| a3daaaf3 |
1067 | } |
| 451f74a2 |
1068 | } |
| 3d8371be |
1069 | return $ret; |
| 451f74a2 |
1070 | } |
| a3daaaf3 |
1071 | |
| e5e9381a |
1072 | function sq_check_save_extension($message) { |
| 1073 | $filename = $message->getFilename(); |
| 1074 | $ext = substr($filename, strrpos($filename,'.')+1); |
| 1075 | $save_extensions = array('jpg','jpeg','gif','png','bmp'); |
| 3d8371be |
1076 | return in_array($ext, $save_extensions); |
| e5e9381a |
1077 | } |
| 1078 | |
| 1079 | |
| 691a2d25 |
1080 | /** |
| 8bd0068d |
1081 | ** HTMLFILTER ROUTINES |
| 1082 | */ |
| 451f74a2 |
1083 | |
| 2dd879b8 |
1084 | /** |
| 0493ed11 |
1085 | * This function checks attribute values for entity-encoded values |
| 1086 | * and returns them translated into 8-bit strings so we can run |
| 1087 | * checks on them. |
| 8bd0068d |
1088 | * |
| 0493ed11 |
1089 | * @param $attvalue A string to run entity check against. |
| 1090 | * @return Nothing, modifies a reference value. |
| 8bd0068d |
1091 | */ |
| 0493ed11 |
1092 | function sq_defang(&$attvalue){ |
| 1093 | $me = 'sq_defang'; |
| 2dd879b8 |
1094 | /** |
| 0493ed11 |
1095 | * Skip this if there aren't ampersands or backslashes. |
| 8bd0068d |
1096 | */ |
| 0493ed11 |
1097 | if (strpos($attvalue, '&') === false |
| 1098 | && strpos($attvalue, '\\') === false){ |
| 1099 | return; |
| 2dd879b8 |
1100 | } |
| 0493ed11 |
1101 | $m = false; |
| 1102 | do { |
| 1103 | $m = false; |
| 1104 | $m = $m || sq_deent($attvalue, '/\�*(\d+);*/s'); |
| 1105 | $m = $m || sq_deent($attvalue, '/\�*((\d|[a-f])+);*/si', true); |
| 1106 | $m = $m || sq_deent($attvalue, '/\\\\(\d+)/s', true); |
| 1107 | } while ($m == true); |
| 1108 | $attvalue = stripslashes($attvalue); |
| 2dd879b8 |
1109 | } |
| 1110 | |
| 1111 | /** |
| 8bd0068d |
1112 | * Kill any tabs, newlines, or carriage returns. Our friends the |
| 1113 | * makers of the browser with 95% market value decided that it'd |
| 1114 | * be funny to make "java[tab]script" be just as good as "javascript". |
| 1115 | * |
| 1116 | * @param attvalue The attribute value before extraneous spaces removed. |
| 0493ed11 |
1117 | * @return attvalue Nothing, modifies a reference value. |
| 8bd0068d |
1118 | */ |
| 0493ed11 |
1119 | function sq_unspace(&$attvalue){ |
| 1120 | $me = 'sq_unspace'; |
| 1121 | if (strcspn($attvalue, "\t\r\n\0 ") != strlen($attvalue)){ |
| 1122 | $attvalue = str_replace(Array("\t", "\r", "\n", "\0", " "), |
| 1123 | Array('', '', '', '', ''), $attvalue); |
| 2dd879b8 |
1124 | } |
| 2dd879b8 |
1125 | } |
| 1126 | |
| 691a2d25 |
1127 | /** |
| 8bd0068d |
1128 | * This function returns the final tag out of the tag name, an array |
| 1129 | * of attributes, and the type of the tag. This function is called by |
| 1130 | * sq_sanitize internally. |
| 1131 | * |
| 1132 | * @param $tagname the name of the tag. |
| 1133 | * @param $attary the array of attributes and their values |
| 1134 | * @param $tagtype The type of the tag (see in comments). |
| 1135 | * @return a string with the final tag representation. |
| 1136 | */ |
| 691a2d25 |
1137 | function sq_tagprint($tagname, $attary, $tagtype){ |
| b583c3e8 |
1138 | $me = 'sq_tagprint'; |
| 3d8371be |
1139 | |
| 691a2d25 |
1140 | if ($tagtype == 2){ |
| 1141 | $fulltag = '</' . $tagname . '>'; |
| 1142 | } else { |
| 1143 | $fulltag = '<' . $tagname; |
| 1144 | if (is_array($attary) && sizeof($attary)){ |
| 1145 | $atts = Array(); |
| 1146 | while (list($attname, $attvalue) = each($attary)){ |
| 1147 | array_push($atts, "$attname=$attvalue"); |
| 1148 | } |
| 1149 | $fulltag .= ' ' . join(" ", $atts); |
| 1150 | } |
| 1151 | if ($tagtype == 3){ |
| b583c3e8 |
1152 | $fulltag .= ' /'; |
| 691a2d25 |
1153 | } |
| b583c3e8 |
1154 | $fulltag .= '>'; |
| 451f74a2 |
1155 | } |
| 691a2d25 |
1156 | return $fulltag; |
| 451f74a2 |
1157 | } |
| a3daaaf3 |
1158 | |
| 691a2d25 |
1159 | /** |
| 8bd0068d |
1160 | * A small helper function to use with array_walk. Modifies a by-ref |
| 1161 | * value and makes it lowercase. |
| 1162 | * |
| 1163 | * @param $val a value passed by-ref. |
| 1164 | * @return void since it modifies a by-ref value. |
| 1165 | */ |
| 691a2d25 |
1166 | function sq_casenormalize(&$val){ |
| 1167 | $val = strtolower($val); |
| 1168 | } |
| 451f74a2 |
1169 | |
| 691a2d25 |
1170 | /** |
| 8bd0068d |
1171 | * This function skips any whitespace from the current position within |
| 1172 | * a string and to the next non-whitespace value. |
| 1173 | * |
| 1174 | * @param $body the string |
| 1175 | * @param $offset the offset within the string where we should start |
| 1176 | * looking for the next non-whitespace character. |
| 1177 | * @return the location within the $body where the next |
| 1178 | * non-whitespace char is located. |
| 1179 | */ |
| 691a2d25 |
1180 | function sq_skipspace($body, $offset){ |
| b583c3e8 |
1181 | $me = 'sq_skipspace'; |
| 3d8371be |
1182 | preg_match('/^(\s*)/s', substr($body, $offset), $matches); |
| 691a2d25 |
1183 | if (sizeof($matches{1})){ |
| 1184 | $count = strlen($matches{1}); |
| 1185 | $offset += $count; |
| 451f74a2 |
1186 | } |
| 691a2d25 |
1187 | return $offset; |
| 451f74a2 |
1188 | } |
| a3daaaf3 |
1189 | |
| 691a2d25 |
1190 | /** |
| 8bd0068d |
1191 | * This function looks for the next character within a string. It's |
| 1192 | * really just a glorified "strpos", except it catches if failures |
| 1193 | * nicely. |
| 1194 | * |
| 1195 | * @param $body The string to look for needle in. |
| 1196 | * @param $offset Start looking from this position. |
| 1197 | * @param $needle The character/string to look for. |
| 1198 | * @return location of the next occurance of the needle, or |
| 1199 | * strlen($body) if needle wasn't found. |
| 1200 | */ |
| 691a2d25 |
1201 | function sq_findnxstr($body, $offset, $needle){ |
| 3d8371be |
1202 | $me = 'sq_findnxstr'; |
| 691a2d25 |
1203 | $pos = strpos($body, $needle, $offset); |
| 1204 | if ($pos === FALSE){ |
| 1205 | $pos = strlen($body); |
| 451f74a2 |
1206 | } |
| 691a2d25 |
1207 | return $pos; |
| 451f74a2 |
1208 | } |
| a3daaaf3 |
1209 | |
| 691a2d25 |
1210 | /** |
| 8bd0068d |
1211 | * This function takes a PCRE-style regexp and tries to match it |
| 1212 | * within the string. |
| 1213 | * |
| 1214 | * @param $body The string to look for needle in. |
| 1215 | * @param $offset Start looking from here. |
| 1216 | * @param $reg A PCRE-style regex to match. |
| 1217 | * @return Returns a false if no matches found, or an array |
| 1218 | * with the following members: |
| 1219 | * - integer with the location of the match within $body |
| 1220 | * - string with whatever content between offset and the match |
| 1221 | * - string with whatever it is we matched |
| 1222 | */ |
| 691a2d25 |
1223 | function sq_findnxreg($body, $offset, $reg){ |
| b583c3e8 |
1224 | $me = 'sq_findnxreg'; |
| 691a2d25 |
1225 | $matches = Array(); |
| 1226 | $retarr = Array(); |
| 7d06541f |
1227 | preg_match("%^(.*?)($reg)%si", substr($body, $offset), $matches); |
| 1228 | if (!isset($matches{0}) || !$matches{0}){ |
| 691a2d25 |
1229 | $retarr = false; |
| 1230 | } else { |
| 1231 | $retarr{0} = $offset + strlen($matches{1}); |
| 1232 | $retarr{1} = $matches{1}; |
| 1233 | $retarr{2} = $matches{2}; |
| 1234 | } |
| 1235 | return $retarr; |
| 1236 | } |
| a3daaaf3 |
1237 | |
| 691a2d25 |
1238 | /** |
| 8bd0068d |
1239 | * This function looks for the next tag. |
| 1240 | * |
| 1241 | * @param $body String where to look for the next tag. |
| 1242 | * @param $offset Start looking from here. |
| 1243 | * @return false if no more tags exist in the body, or |
| 1244 | * an array with the following members: |
| 1245 | * - string with the name of the tag |
| 1246 | * - array with attributes and their values |
| 1247 | * - integer with tag type (1, 2, or 3) |
| 1248 | * - integer where the tag starts (starting "<") |
| 1249 | * - integer where the tag ends (ending ">") |
| 1250 | * first three members will be false, if the tag is invalid. |
| 1251 | */ |
| 691a2d25 |
1252 | function sq_getnxtag($body, $offset){ |
| b583c3e8 |
1253 | $me = 'sq_getnxtag'; |
| 691a2d25 |
1254 | if ($offset > strlen($body)){ |
| 1255 | return false; |
| 1256 | } |
| 1257 | $lt = sq_findnxstr($body, $offset, "<"); |
| 1258 | if ($lt == strlen($body)){ |
| 1259 | return false; |
| 1260 | } |
| 1261 | /** |
| 8bd0068d |
1262 | * We are here: |
| 1263 | * blah blah <tag attribute="value"> |
| 1264 | * \---------^ |
| 1265 | */ |
| 691a2d25 |
1266 | $pos = sq_skipspace($body, $lt+1); |
| 1267 | if ($pos >= strlen($body)){ |
| 1268 | return Array(false, false, false, $lt, strlen($body)); |
| 1269 | } |
| 1270 | /** |
| 8bd0068d |
1271 | * There are 3 kinds of tags: |
| 1272 | * 1. Opening tag, e.g.: |
| 1273 | * <a href="blah"> |
| 1274 | * 2. Closing tag, e.g.: |
| 1275 | * </a> |
| 1276 | * 3. XHTML-style content-less tag, e.g.: |
| 1277 | * <img src="blah" /> |
| 1278 | */ |
| 691a2d25 |
1279 | $tagtype = false; |
| 1280 | switch (substr($body, $pos, 1)){ |
| 3d8371be |
1281 | case '/': |
| 1282 | $tagtype = 2; |
| 1283 | $pos++; |
| 1284 | break; |
| 1285 | case '!': |
| 1286 | /** |
| 8bd0068d |
1287 | * A comment or an SGML declaration. |
| 1288 | */ |
| 3d8371be |
1289 | if (substr($body, $pos+1, 2) == "--"){ |
| 1290 | $gt = strpos($body, "-->", $pos); |
| 1291 | if ($gt === false){ |
| 1292 | $gt = strlen($body); |
| 1293 | } else { |
| 1294 | $gt += 2; |
| 1295 | } |
| 1296 | return Array(false, false, false, $lt, $gt); |
| bb8d0799 |
1297 | } else { |
| 3d8371be |
1298 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1299 | return Array(false, false, false, $lt, $gt); |
| 1300 | } |
| 1301 | break; |
| 1302 | default: |
| 1303 | /** |
| 8bd0068d |
1304 | * Assume tagtype 1 for now. If it's type 3, we'll switch values |
| 1305 | * later. |
| 1306 | */ |
| 3d8371be |
1307 | $tagtype = 1; |
| 1308 | break; |
| 691a2d25 |
1309 | } |
| a3daaaf3 |
1310 | |
| 0493ed11 |
1311 | $tag_start = $pos; |
| 691a2d25 |
1312 | $tagname = ''; |
| 1313 | /** |
| 8bd0068d |
1314 | * Look for next [\W-_], which will indicate the end of the tag name. |
| 1315 | */ |
| 691a2d25 |
1316 | $regary = sq_findnxreg($body, $pos, "[^\w\-_]"); |
| 1317 | if ($regary == false){ |
| 1318 | return Array(false, false, false, $lt, strlen($body)); |
| 1319 | } |
| 1320 | list($pos, $tagname, $match) = $regary; |
| 1321 | $tagname = strtolower($tagname); |
| 1322 | |
| 1323 | /** |
| 8bd0068d |
1324 | * $match can be either of these: |
| 1325 | * '>' indicating the end of the tag entirely. |
| 1326 | * '\s' indicating the end of the tag name. |
| 1327 | * '/' indicating that this is type-3 xhtml tag. |
| 1328 | * |
| 1329 | * Whatever else we find there indicates an invalid tag. |
| 1330 | */ |
| 691a2d25 |
1331 | switch ($match){ |
| 3d8371be |
1332 | case '/': |
| 691a2d25 |
1333 | /** |
| 8bd0068d |
1334 | * This is an xhtml-style tag with a closing / at the |
| 1335 | * end, like so: <img src="blah" />. Check if it's followed |
| 1336 | * by the closing bracket. If not, then this tag is invalid |
| 1337 | */ |
| 3d8371be |
1338 | if (substr($body, $pos, 2) == "/>"){ |
| 1339 | $pos++; |
| 1340 | $tagtype = 3; |
| 1341 | } else { |
| 1342 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1343 | $retary = Array(false, false, false, $lt, $gt); |
| 1344 | return $retary; |
| 1345 | } |
| 1346 | case '>': |
| 1347 | return Array($tagname, false, $tagtype, $lt, $pos); |
| 1348 | break; |
| 1349 | default: |
| 1350 | /** |
| 8bd0068d |
1351 | * Check if it's whitespace |
| 1352 | */ |
| 3d8371be |
1353 | if (!preg_match('/\s/', $match)){ |
| 1354 | /** |
| 8bd0068d |
1355 | * This is an invalid tag! Look for the next closing ">". |
| 1356 | */ |
| 7d06541f |
1357 | $gt = sq_findnxstr($body, $lt, ">"); |
| 3d8371be |
1358 | return Array(false, false, false, $lt, $gt); |
| 1359 | } |
| 1360 | break; |
| 691a2d25 |
1361 | } |
| 3d8371be |
1362 | |
| 691a2d25 |
1363 | /** |
| 8bd0068d |
1364 | * At this point we're here: |
| 1365 | * <tagname attribute='blah'> |
| 1366 | * \-------^ |
| 1367 | * |
| 1368 | * At this point we loop in order to find all attributes. |
| 1369 | */ |
| 691a2d25 |
1370 | $attname = ''; |
| 0493ed11 |
1371 | $atttype = false; |
| 691a2d25 |
1372 | $attary = Array(); |
| 1373 | |
| 1374 | while ($pos <= strlen($body)){ |
| 1375 | $pos = sq_skipspace($body, $pos); |
| 1376 | if ($pos == strlen($body)){ |
| 1377 | /** |
| 8bd0068d |
1378 | * Non-closed tag. |
| 1379 | */ |
| 691a2d25 |
1380 | return Array(false, false, false, $lt, $pos); |
| 1381 | } |
| 1382 | /** |
| 8bd0068d |
1383 | * See if we arrived at a ">" or "/>", which means that we reached |
| 1384 | * the end of the tag. |
| 1385 | */ |
| 691a2d25 |
1386 | $matches = Array(); |
| 164800ad |
1387 | if (preg_match("%^(\s*)(>|/>)%s", substr($body, $pos), $matches)) { |
| c828931c |
1388 | /** |
| 8bd0068d |
1389 | * Yep. So we did. |
| 1390 | */ |
| c828931c |
1391 | $pos += strlen($matches{1}); |
| 1392 | if ($matches{2} == "/>"){ |
| 1393 | $tagtype = 3; |
| 1394 | $pos++; |
| 1395 | } |
| 1396 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
| 1397 | } |
| a3daaaf3 |
1398 | |
| cca46357 |
1399 | /** |
| 8bd0068d |
1400 | * There are several types of attributes, with optional |
| 1401 | * [:space:] between members. |
| 1402 | * Type 1: |
| 1403 | * attrname[:space:]=[:space:]'CDATA' |
| 1404 | * Type 2: |
| 1405 | * attrname[:space:]=[:space:]"CDATA" |
| 1406 | * Type 3: |
| 1407 | * attr[:space:]=[:space:]CDATA |
| 1408 | * Type 4: |
| 1409 | * attrname |
| 1410 | * |
| 1411 | * We leave types 1 and 2 the same, type 3 we check for |
| 1412 | * '"' and convert to """ if needed, then wrap in |
| 1413 | * double quotes. Type 4 we convert into: |
| 1414 | * attrname="yes". |
| 1415 | */ |
| 3f7c623f |
1416 | $regary = sq_findnxreg($body, $pos, "[^:\w\-_]"); |
| 691a2d25 |
1417 | if ($regary == false){ |
| 1418 | /** |
| 8bd0068d |
1419 | * Looks like body ended before the end of tag. |
| 1420 | */ |
| 691a2d25 |
1421 | return Array(false, false, false, $lt, strlen($body)); |
| cca46357 |
1422 | } |
| 691a2d25 |
1423 | list($pos, $attname, $match) = $regary; |
| 1424 | $attname = strtolower($attname); |
| 1425 | /** |
| 8bd0068d |
1426 | * We arrived at the end of attribute name. Several things possible |
| 1427 | * here: |
| 1428 | * '>' means the end of the tag and this is attribute type 4 |
| 1429 | * '/' if followed by '>' means the same thing as above |
| 1430 | * '\s' means a lot of things -- look what it's followed by. |
| 1431 | * anything else means the attribute is invalid. |
| 1432 | */ |
| 691a2d25 |
1433 | switch($match){ |
| 3d8371be |
1434 | case '/': |
| 691a2d25 |
1435 | /** |
| 8bd0068d |
1436 | * This is an xhtml-style tag with a closing / at the |
| 1437 | * end, like so: <img src="blah" />. Check if it's followed |
| 1438 | * by the closing bracket. If not, then this tag is invalid |
| 1439 | */ |
| 3d8371be |
1440 | if (substr($body, $pos, 2) == "/>"){ |
| 691a2d25 |
1441 | $pos++; |
| 3d8371be |
1442 | $tagtype = 3; |
| 691a2d25 |
1443 | } else { |
| 3d8371be |
1444 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1445 | $retary = Array(false, false, false, $lt, $gt); |
| 1446 | return $retary; |
| 1447 | } |
| 1448 | case '>': |
| 1449 | $attary{$attname} = '"yes"'; |
| 1450 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
| 1451 | break; |
| 1452 | default: |
| 1453 | /** |
| 8bd0068d |
1454 | * Skip whitespace and see what we arrive at. |
| 1455 | */ |
| 3d8371be |
1456 | $pos = sq_skipspace($body, $pos); |
| 1457 | $char = substr($body, $pos, 1); |
| 1458 | /** |
| 8bd0068d |
1459 | * Two things are valid here: |
| 1460 | * '=' means this is attribute type 1 2 or 3. |
| 1461 | * \w means this was attribute type 4. |
| 1462 | * anything else we ignore and re-loop. End of tag and |
| 1463 | * invalid stuff will be caught by our checks at the beginning |
| 1464 | * of the loop. |
| 1465 | */ |
| 3d8371be |
1466 | if ($char == "="){ |
| 1467 | $pos++; |
| 1468 | $pos = sq_skipspace($body, $pos); |
| 691a2d25 |
1469 | /** |
| 8bd0068d |
1470 | * Here are 3 possibilities: |
| 1471 | * "'" attribute type 1 |
| 1472 | * '"' attribute type 2 |
| 1473 | * everything else is the content of tag type 3 |
| 1474 | */ |
| 3d8371be |
1475 | $quot = substr($body, $pos, 1); |
| 1476 | if ($quot == "'"){ |
| 1477 | $regary = sq_findnxreg($body, $pos+1, "\'"); |
| 1478 | if ($regary == false){ |
| 1479 | return Array(false, false, false, $lt, strlen($body)); |
| 1480 | } |
| 1481 | list($pos, $attval, $match) = $regary; |
| 1482 | $pos++; |
| 1483 | $attary{$attname} = "'" . $attval . "'"; |
| 1484 | } else if ($quot == '"'){ |
| 1485 | $regary = sq_findnxreg($body, $pos+1, '\"'); |
| 1486 | if ($regary == false){ |
| 1487 | return Array(false, false, false, $lt, strlen($body)); |
| 1488 | } |
| 1489 | list($pos, $attval, $match) = $regary; |
| 1490 | $pos++; |
| 1491 | $attary{$attname} = '"' . $attval . '"'; |
| 1492 | } else { |
| 1493 | /** |
| 8bd0068d |
1494 | * These are hateful. Look for \s, or >. |
| 1495 | */ |
| 3d8371be |
1496 | $regary = sq_findnxreg($body, $pos, "[\s>]"); |
| 1497 | if ($regary == false){ |
| 1498 | return Array(false, false, false, $lt, strlen($body)); |
| 1499 | } |
| 1500 | list($pos, $attval, $match) = $regary; |
| 1501 | /** |
| 8bd0068d |
1502 | * If it's ">" it will be caught at the top. |
| 1503 | */ |
| 3d8371be |
1504 | $attval = preg_replace("/\"/s", """, $attval); |
| 1505 | $attary{$attname} = '"' . $attval . '"'; |
| 7e235a1a |
1506 | } |
| 3d8371be |
1507 | } else if (preg_match("|[\w/>]|", $char)) { |
| 691a2d25 |
1508 | /** |
| 8bd0068d |
1509 | * That was attribute type 4. |
| 1510 | */ |
| 3d8371be |
1511 | $attary{$attname} = '"yes"'; |
| 1512 | } else { |
| 1513 | /** |
| 8bd0068d |
1514 | * An illegal character. Find next '>' and return. |
| 1515 | */ |
| 3d8371be |
1516 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1517 | return Array(false, false, false, $lt, $gt); |
| 451f74a2 |
1518 | } |
| 3d8371be |
1519 | break; |
| 691a2d25 |
1520 | } |
| 1521 | } |
| 1522 | /** |
| 8bd0068d |
1523 | * The fact that we got here indicates that the tag end was never |
| 1524 | * found. Return invalid tag indication so it gets stripped. |
| 1525 | */ |
| 691a2d25 |
1526 | return Array(false, false, false, $lt, strlen($body)); |
| 1527 | } |
| 1528 | |
| 1529 | /** |
| 0493ed11 |
1530 | * Translates entities into literal values so they can be checked. |
| 8bd0068d |
1531 | * |
| 0493ed11 |
1532 | * @param $attvalue the by-ref value to check. |
| 1533 | * @param $regex the regular expression to check against. |
| 1534 | * @param $hex whether the entites are hexadecimal. |
| 1535 | * @return True or False depending on whether there were matches. |
| 8bd0068d |
1536 | */ |
| 0493ed11 |
1537 | function sq_deent(&$attvalue, $regex, $hex=false){ |
| b583c3e8 |
1538 | $me = 'sq_deent'; |
| 0493ed11 |
1539 | $ret_match = false; |
| 1540 | preg_match_all($regex, $attvalue, $matches); |
| 1541 | if (is_array($matches) && sizeof($matches[0]) > 0){ |
| 1542 | $repl = Array(); |
| 1543 | for ($i = 0; $i < sizeof($matches[0]); $i++){ |
| 1544 | $numval = $matches[1][$i]; |
| 1545 | if ($hex){ |
| 1546 | $numval = hexdec($numval); |
| a3daaaf3 |
1547 | } |
| 0493ed11 |
1548 | $repl{$matches[0][$i]} = chr($numval); |
| 691a2d25 |
1549 | } |
| 0493ed11 |
1550 | $attvalue = strtr($attvalue, $repl); |
| 1551 | return true; |
| 1552 | } else { |
| 1553 | return false; |
| 691a2d25 |
1554 | } |
| 691a2d25 |
1555 | } |
| 1556 | |
| 1557 | /** |
| 8bd0068d |
1558 | * This function runs various checks against the attributes. |
| 1559 | * |
| 1560 | * @param $tagname String with the name of the tag. |
| 1561 | * @param $attary Array with all tag attributes. |
| 1562 | * @param $rm_attnames See description for sq_sanitize |
| 1563 | * @param $bad_attvals See description for sq_sanitize |
| 1564 | * @param $add_attr_to_tag See description for sq_sanitize |
| 1565 | * @param $message message object |
| 1566 | * @param $id message id |
| 1567 | * @return Array with modified attributes. |
| 1568 | */ |
| da2415c1 |
1569 | function sq_fixatts($tagname, |
| 1570 | $attary, |
| 691a2d25 |
1571 | $rm_attnames, |
| 1572 | $bad_attvals, |
| 1573 | $add_attr_to_tag, |
| 1574 | $message, |
| b3af12ef |
1575 | $id, |
| 3d8371be |
1576 | $mailbox |
| 691a2d25 |
1577 | ){ |
| b583c3e8 |
1578 | $me = 'sq_fixatts'; |
| 691a2d25 |
1579 | while (list($attname, $attvalue) = each($attary)){ |
| 1580 | /** |
| 8bd0068d |
1581 | * See if this attribute should be removed. |
| 1582 | */ |
| 691a2d25 |
1583 | foreach ($rm_attnames as $matchtag=>$matchattrs){ |
| 1584 | if (preg_match($matchtag, $tagname)){ |
| 1585 | foreach ($matchattrs as $matchattr){ |
| 1586 | if (preg_match($matchattr, $attname)){ |
| 1587 | unset($attary{$attname}); |
| 1588 | continue; |
| 1589 | } |
| 451f74a2 |
1590 | } |
| 451f74a2 |
1591 | } |
| 691a2d25 |
1592 | } |
| 1593 | /** |
| 8bd0068d |
1594 | * Remove any backslashes, entities, and extraneous whitespace. |
| 1595 | */ |
| 0493ed11 |
1596 | sq_defang($attvalue); |
| 1597 | sq_unspace($attvalue); |
| af861a34 |
1598 | |
| 691a2d25 |
1599 | /** |
| 8bd0068d |
1600 | * Now let's run checks on the attvalues. |
| 1601 | * I don't expect anyone to comprehend this. If you do, |
| 1602 | * get in touch with me so I can drive to where you live and |
| 1603 | * shake your hand personally. :) |
| 1604 | */ |
| 691a2d25 |
1605 | foreach ($bad_attvals as $matchtag=>$matchattrs){ |
| 1606 | if (preg_match($matchtag, $tagname)){ |
| 1607 | foreach ($matchattrs as $matchattr=>$valary){ |
| 1608 | if (preg_match($matchattr, $attname)){ |
| 1609 | /** |
| 8bd0068d |
1610 | * There are two arrays in valary. |
| 1611 | * First is matches. |
| 1612 | * Second one is replacements |
| 1613 | */ |
| 691a2d25 |
1614 | list($valmatch, $valrepl) = $valary; |
| da2415c1 |
1615 | $newvalue = |
| 691a2d25 |
1616 | preg_replace($valmatch, $valrepl, $attvalue); |
| 1617 | if ($newvalue != $attvalue){ |
| 1618 | $attary{$attname} = $newvalue; |
| 1619 | } |
| 1620 | } |
| 1621 | } |
| 451f74a2 |
1622 | } |
| a3daaaf3 |
1623 | } |
| 834a1027 |
1624 | |
| 834a1027 |
1625 | /** |
| 1626 | * Replace empty src tags with the blank image. src is only used |
| 1627 | * for frames, images, and image inputs. Doing a replace should |
| 1628 | * not affect them working as should be, however it will stop |
| 1629 | * IE from being kicked off when src for img tags are not set |
| 1630 | */ |
| 5a6fde9e |
1631 | if (($attname == 'src') && ($attvalue == '""')) { |
| 834a1027 |
1632 | $attary{$attname} = '"' . SM_PATH . 'images/blank.png"'; |
| 1633 | } |
| 1634 | |
| 691a2d25 |
1635 | /** |
| 8bd0068d |
1636 | * Turn cid: urls into http-friendly ones. |
| 1637 | */ |
| 691a2d25 |
1638 | if (preg_match("/^[\'\"]\s*cid:/si", $attvalue)){ |
| b3af12ef |
1639 | $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox); |
| 691a2d25 |
1640 | } |
| ff940ebc |
1641 | |
| 1642 | /** |
| 1643 | * "Hack" fix for Outlook using propriatary outbind:// protocol in img tags. |
| 1644 | * One day MS might actually make it match something useful, for now, falling |
| 1645 | * back to using cid2http, so we can grab the blank.png. |
| 1646 | */ |
| 1647 | if (preg_match("/^[\'\"]\s*outbind:\/\//si", $attvalue)) { |
| 1648 | $attary{$attname} = sq_cid2http($message, $id, $attvalue, $mailbox); |
| 1649 | } |
| 1650 | |
| a3daaaf3 |
1651 | } |
| 691a2d25 |
1652 | /** |
| 8bd0068d |
1653 | * See if we need to append any attributes to this tag. |
| 1654 | */ |
| 691a2d25 |
1655 | foreach ($add_attr_to_tag as $matchtag=>$addattary){ |
| 1656 | if (preg_match($matchtag, $tagname)){ |
| 1657 | $attary = array_merge($attary, $addattary); |
| 1658 | } |
| 1659 | } |
| 1660 | return $attary; |
| 451f74a2 |
1661 | } |
| a3daaaf3 |
1662 | |
| 691a2d25 |
1663 | /** |
| 8bd0068d |
1664 | * This function edits the style definition to make them friendly and |
| 1665 | * usable in SquirrelMail. |
| 1666 | * |
| 1667 | * @param $message the message object |
| 1668 | * @param $id the message id |
| 1669 | * @param $content a string with whatever is between <style> and </style> |
| 1670 | * @param $mailbox the message mailbox |
| 1671 | * @return a string with edited content. |
| 1672 | */ |
| e60a299a |
1673 | function sq_fixstyle($body, $pos, $message, $id, $mailbox){ |
| 691a2d25 |
1674 | global $view_unsafe_images; |
| b583c3e8 |
1675 | $me = 'sq_fixstyle'; |
| 7d06541f |
1676 | $ret = sq_findnxreg($body, $pos, '</\s*style\s*>'); |
| 1677 | if ($ret == FALSE){ |
| 1678 | return array(FALSE, strlen($body)); |
| 1679 | } |
| 1680 | $newpos = $ret[0] + strlen($ret[2]); |
| 1681 | $content = $ret[1]; |
| 691a2d25 |
1682 | /** |
| 0493ed11 |
1683 | * First look for general BODY style declaration, which would be |
| 1684 | * like so: |
| 1685 | * body {background: blah-blah} |
| 1686 | * and change it to .bodyclass so we can just assign it to a <div> |
| 1687 | */ |
| 691a2d25 |
1688 | $content = preg_replace("|body(\s*\{.*?\})|si", ".bodyclass\\1", $content); |
| 3d8371be |
1689 | $secremoveimg = '../images/' . _("sec_remove_eng.png"); |
| 691a2d25 |
1690 | /** |
| 0493ed11 |
1691 | * Fix url('blah') declarations. |
| 1692 | */ |
| 1693 | // $content = preg_replace("|url\s*\(\s*([\'\"])\s*\S+script\s*:.*?([\'\"])\s*\)|si", |
| 1694 | // "url(\\1$secremoveimg\\2)", $content); |
| 1695 | // remove NUL |
| 1696 | $content = str_replace("\0", "", $content); |
| 758a7889 |
1697 | |
| 0493ed11 |
1698 | // NB I insert NUL characters to keep to avoid an infinite loop. They are removed after the loop. |
| 1699 | while (preg_match("/url\s*\(\s*[\'\"]?([^:]+):(.*)?[\'\"]?\s*\)/si", $content, $matches)) { |
| 1700 | $sProto = strtolower($matches[1]); |
| 1701 | switch ($sProto) { |
| 0493ed11 |
1702 | /** |
| 758a7889 |
1703 | * Fix url('https*://.*) declarations but only if $view_unsafe_images |
| 1704 | * is false. |
| 0493ed11 |
1705 | */ |
| 758a7889 |
1706 | case 'https': |
| 1707 | case 'http': |
| 1708 | if (!$view_unsafe_images){ |
| 1709 | |
| 1710 | $sExpr = "/url\s*\(\s*[\'\"]?\s*$sProto*:.*[\'\"]?\s*\)/si"; |
| 1711 | $content = preg_replace($sExpr, "u\0r\0l(\\1$secremoveimg\\2)", $content); |
| 1712 | |
| 1713 | } else { |
| 1714 | $content = preg_replace('/url/i',"u\0r\0l",$content); |
| 1715 | } |
| 1716 | break; |
| 1717 | /** |
| 1718 | * Fix urls that refer to cid: |
| 1719 | */ |
| 1720 | case 'cid': |
| 1721 | $cidurl = 'cid:'. $matches[2]; |
| 1722 | $httpurl = sq_cid2http($message, $id, $cidurl, $mailbox); |
| 1723 | // escape parentheses that can modify the regular expression |
| 1724 | $cidurl = str_replace(array('(',')'),array('\\(','\\)'),$cidurl); |
| 1725 | $content = preg_replace("|url\s*\(\s*$cidurl\s*\)|si", |
| 1726 | "u\0r\0l($httpurl)", $content); |
| 1727 | break; |
| 1728 | default: |
| 1729 | /** |
| 1730 | * replace url with protocol other then the white list |
| 1731 | * http,https and cid by an empty string. |
| 1732 | */ |
| 1733 | $content = preg_replace("/url\s*\(\s*[\'\"]?([^:]+):(.*)?[\'\"]?\s*\)/si", |
| 1734 | "", $content); |
| 1735 | break; |
| 0493ed11 |
1736 | } |
| 691a2d25 |
1737 | } |
| 0493ed11 |
1738 | // remove NUL |
| 1739 | $content = str_replace("\0", "", $content); |
| 0493ed11 |
1740 | /** |
| 1741 | * Remove any backslashes, entities, and extraneous whitespace. |
| 1742 | */ |
| 1743 | $contentTemp = $content; |
| 1744 | sq_defang($contentTemp); |
| 1745 | sq_unspace($contentTemp); |
| a3daaaf3 |
1746 | |
| 691a2d25 |
1747 | /** |
| 8bd0068d |
1748 | * Fix stupid css declarations which lead to vulnerabilities |
| 1749 | * in IE. |
| 1750 | */ |
| 5db90261 |
1751 | $match = Array('/\/\*.*\*\//', |
| 1752 | '/expression/i', |
| 0493ed11 |
1753 | '/behaviou*r/i', |
| 1754 | '/binding/i', |
| 1755 | '/include-source/i'); |
| 5db90261 |
1756 | $replace = Array('','idiocy', 'idiocy', 'idiocy', 'idiocy'); |
| 0493ed11 |
1757 | $contentNew = preg_replace($match, $replace, $contentTemp); |
| 1758 | if ($contentNew !== $contentTemp) { |
| 1759 | // insecure css declarations are used. From now on we don't care |
| 1760 | // anymore if the css is destroyed by sq_deent, sq_unspace or sq_unbackslash |
| 1761 | $content = $contentNew; |
| 1762 | } |
| 7d06541f |
1763 | return array($content, $newpos); |
| 691a2d25 |
1764 | } |
| a3daaaf3 |
1765 | |
| 0493ed11 |
1766 | |
| 691a2d25 |
1767 | /** |
| 8bd0068d |
1768 | * This function converts cid: url's into the ones that can be viewed in |
| 1769 | * the browser. |
| 1770 | * |
| 1771 | * @param $message the message object |
| 1772 | * @param $id the message id |
| 1773 | * @param $cidurl the cid: url. |
| 1774 | * @param $mailbox the message mailbox |
| 1775 | * @return a string with a http-friendly url |
| 1776 | */ |
| b3af12ef |
1777 | function sq_cid2http($message, $id, $cidurl, $mailbox){ |
| 691a2d25 |
1778 | /** |
| 8bd0068d |
1779 | * Get rid of quotes. |
| 1780 | */ |
| 691a2d25 |
1781 | $quotchar = substr($cidurl, 0, 1); |
| 2dd879b8 |
1782 | if ($quotchar == '"' || $quotchar == "'"){ |
| 1783 | $cidurl = str_replace($quotchar, "", $cidurl); |
| 1784 | } else { |
| 1785 | $quotchar = ''; |
| 1786 | } |
| 691a2d25 |
1787 | $cidurl = substr(trim($cidurl), 4); |
| 0493ed11 |
1788 | |
| 1789 | $match_str = '/\{.*?\}\//'; |
| 1790 | $str_rep = ''; |
| 1791 | $cidurl = preg_replace($match_str, $str_rep, $cidurl); |
| 1792 | |
| e5e9381a |
1793 | $linkurl = find_ent_id($cidurl, $message); |
| 1794 | /* in case of non-save cid links $httpurl should be replaced by a sort of |
| 8bd0068d |
1795 | unsave link image */ |
| e5e9381a |
1796 | $httpurl = ''; |
| c8f5f606 |
1797 | |
| 8bd0068d |
1798 | /** |
| 1799 | * This is part of a fix for Outlook Express 6.x generating |
| 1800 | * cid URLs without creating content-id headers. These images are |
| 1801 | * not part of the multipart/related html mail. The html contains |
| 1802 | * <img src="cid:{some_id}/image_filename.ext"> references to |
| 1803 | * attached images with as goal to render them inline although |
| 1804 | * the attachment disposition property is not inline. |
| 1805 | */ |
| c8f5f606 |
1806 | |
| 1807 | if (empty($linkurl)) { |
| 1808 | if (preg_match('/{.*}\//', $cidurl)) { |
| 1809 | $cidurl = preg_replace('/{.*}\//','', $cidurl); |
| 1810 | if (!empty($cidurl)) { |
| 1811 | $linkurl = find_ent_id($cidurl, $message); |
| 1812 | } |
| 1813 | } |
| 1814 | } |
| f8a1ed5a |
1815 | |
| c8f5f606 |
1816 | if (!empty($linkurl)) { |
| 6b04287c |
1817 | $httpurl = $quotchar . SM_PATH . 'src/download.php?absolute_dl=true&' . |
| 8bd0068d |
1818 | "passed_id=$id&mailbox=" . urlencode($mailbox) . |
| 1819 | '&ent_id=' . $linkurl . $quotchar; |
| c8f5f606 |
1820 | } else { |
| 1821 | /** |
| 1822 | * If we couldn't generate a proper img url, drop in a blank image |
| 1823 | * instead of sending back empty, otherwise it causes unusual behaviour |
| 1824 | */ |
| bc017c1d |
1825 | $httpurl = $quotchar . SM_PATH . 'images/blank.png' . $quotchar; |
| e5e9381a |
1826 | } |
| f8a1ed5a |
1827 | |
| 691a2d25 |
1828 | return $httpurl; |
| 1829 | } |
| 1830 | |
| 1831 | /** |
| 8bd0068d |
1832 | * This function changes the <body> tag into a <div> tag since we |
| 1833 | * can't really have a body-within-body. |
| 1834 | * |
| 1835 | * @param $attary an array of attributes and values of <body> |
| 1836 | * @param $mailbox mailbox we're currently reading (for cid2http) |
| 1837 | * @param $message current message (for cid2http) |
| 1838 | * @param $id current message id (for cid2http) |
| 1839 | * @return a modified array of attributes to be set for <div> |
| 1840 | */ |
| 2dd879b8 |
1841 | function sq_body2div($attary, $mailbox, $message, $id){ |
| b583c3e8 |
1842 | $me = 'sq_body2div'; |
| 3d8371be |
1843 | $divattary = Array('class' => "'bodyclass'"); |
| b583c3e8 |
1844 | $text = '#000000'; |
| c189a963 |
1845 | $has_bgc_stl = $has_txt_stl = false; |
| b583c3e8 |
1846 | $styledef = ''; |
| 691a2d25 |
1847 | if (is_array($attary) && sizeof($attary) > 0){ |
| 1848 | foreach ($attary as $attname=>$attvalue){ |
| 1849 | $quotchar = substr($attvalue, 0, 1); |
| 1850 | $attvalue = str_replace($quotchar, "", $attvalue); |
| 1851 | switch ($attname){ |
| 3d8371be |
1852 | case 'background': |
| 8bd0068d |
1853 | $attvalue = sq_cid2http($message, $id, $attvalue, $mailbox); |
| 3d8371be |
1854 | $styledef .= "background-image: url('$attvalue'); "; |
| 1855 | break; |
| 1856 | case 'bgcolor': |
| c189a963 |
1857 | $has_bgc_stl = true; |
| 3d8371be |
1858 | $styledef .= "background-color: $attvalue; "; |
| 1859 | break; |
| 1860 | case 'text': |
| c189a963 |
1861 | $has_txt_stl = true; |
| 3d8371be |
1862 | $styledef .= "color: $attvalue; "; |
| 1863 | break; |
| 691a2d25 |
1864 | } |
| a3daaaf3 |
1865 | } |
| c189a963 |
1866 | // Outlook defines a white bgcolor and no text color. This can lead to |
| 1867 | // white text on a white bg with certain themes. |
| 1868 | if ($has_bgc_stl && !$has_txt_stl) { |
| 1869 | $styledef .= "color: $text; "; |
| 1870 | } |
| 691a2d25 |
1871 | if (strlen($styledef) > 0){ |
| 1872 | $divattary{"style"} = "\"$styledef\""; |
| 1873 | } |
| 1874 | } |
| 1875 | return $divattary; |
| 1876 | } |
| a3daaaf3 |
1877 | |
| 691a2d25 |
1878 | /** |
| 8bd0068d |
1879 | * This is the main function and the one you should actually be calling. |
| 1880 | * There are several variables you should be aware of an which need |
| 1881 | * special description. |
| 1882 | * |
| 1883 | * Since the description is quite lengthy, see it here: |
| 1884 | * http://linux.duke.edu/projects/mini/htmlfilter/ |
| 1885 | * |
| 1886 | * @param $body the string with HTML you wish to filter |
| 1887 | * @param $tag_list see description above |
| 1888 | * @param $rm_tags_with_content see description above |
| 1889 | * @param $self_closing_tags see description above |
| 1890 | * @param $force_tag_closing see description above |
| 1891 | * @param $rm_attnames see description above |
| 1892 | * @param $bad_attvals see description above |
| 1893 | * @param $add_attr_to_tag see description above |
| 1894 | * @param $message message object |
| 1895 | * @param $id message id |
| 1896 | * @return sanitized html safe to show on your pages. |
| 1897 | */ |
| da2415c1 |
1898 | function sq_sanitize($body, |
| 8bd0068d |
1899 | $tag_list, |
| 1900 | $rm_tags_with_content, |
| 1901 | $self_closing_tags, |
| 1902 | $force_tag_closing, |
| 1903 | $rm_attnames, |
| 1904 | $bad_attvals, |
| 1905 | $add_attr_to_tag, |
| 1906 | $message, |
| 1907 | $id, |
| 1908 | $mailbox |
| 1909 | ){ |
| b583c3e8 |
1910 | $me = 'sq_sanitize'; |
| 7d06541f |
1911 | $rm_tags = array_shift($tag_list); |
| 691a2d25 |
1912 | /** |
| 8bd0068d |
1913 | * Normalize rm_tags and rm_tags_with_content. |
| 1914 | */ |
| 7d06541f |
1915 | @array_walk($tag_list, 'sq_casenormalize'); |
| 691a2d25 |
1916 | @array_walk($rm_tags_with_content, 'sq_casenormalize'); |
| 1917 | @array_walk($self_closing_tags, 'sq_casenormalize'); |
| 1918 | /** |
| 8bd0068d |
1919 | * See if tag_list is of tags to remove or tags to allow. |
| 1920 | * false means remove these tags |
| 1921 | * true means allow these tags |
| 1922 | */ |
| 691a2d25 |
1923 | $curpos = 0; |
| 1924 | $open_tags = Array(); |
| 2dd879b8 |
1925 | $trusted = "\n<!-- begin sanitized html -->\n"; |
| 691a2d25 |
1926 | $skip_content = false; |
| bb8d0799 |
1927 | /** |
| 8bd0068d |
1928 | * Take care of netscape's stupid javascript entities like |
| 1929 | * &{alert('boo')}; |
| 1930 | */ |
| bb8d0799 |
1931 | $body = preg_replace("/&(\{.*?\};)/si", "&\\1", $body); |
| 691a2d25 |
1932 | |
| 7d06541f |
1933 | while (($curtag = sq_getnxtag($body, $curpos)) != FALSE){ |
| 691a2d25 |
1934 | list($tagname, $attary, $tagtype, $lt, $gt) = $curtag; |
| 1935 | $free_content = substr($body, $curpos, $lt-$curpos); |
| 1936 | /** |
| 8bd0068d |
1937 | * Take care of <style> |
| 1938 | */ |
| 7d06541f |
1939 | if ($tagname == "style" && $tagtype == 1){ |
| da2415c1 |
1940 | list($free_content, $curpos) = |
| e60a299a |
1941 | sq_fixstyle($body, $gt+1, $message, $id, $mailbox); |
| 7d06541f |
1942 | if ($free_content != FALSE){ |
| 1943 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
| 1944 | $trusted .= $free_content; |
| 1945 | $trusted .= sq_tagprint($tagname, false, 2); |
| 1946 | } |
| 1947 | continue; |
| 691a2d25 |
1948 | } |
| 1949 | if ($skip_content == false){ |
| 1950 | $trusted .= $free_content; |
| 691a2d25 |
1951 | } |
| 1952 | if ($tagname != FALSE){ |
| 1953 | if ($tagtype == 2){ |
| 1954 | if ($skip_content == $tagname){ |
| 1955 | /** |
| 8bd0068d |
1956 | * Got to the end of tag we needed to remove. |
| 1957 | */ |
| 691a2d25 |
1958 | $tagname = false; |
| 1959 | $skip_content = false; |
| 1960 | } else { |
| 1961 | if ($skip_content == false){ |
| c828931c |
1962 | if ($tagname == "body"){ |
| 1963 | $tagname = "div"; |
| 2dd879b8 |
1964 | } |
| da2415c1 |
1965 | if (isset($open_tags{$tagname}) && |
| 8bd0068d |
1966 | $open_tags{$tagname} > 0){ |
| 2dd879b8 |
1967 | $open_tags{$tagname}--; |
| 691a2d25 |
1968 | } else { |
| 2dd879b8 |
1969 | $tagname = false; |
| 691a2d25 |
1970 | } |
| 691a2d25 |
1971 | } |
| 1972 | } |
| 1973 | } else { |
| 1974 | /** |
| 8bd0068d |
1975 | * $rm_tags_with_content |
| 1976 | */ |
| 691a2d25 |
1977 | if ($skip_content == false){ |
| 1978 | /** |
| 8bd0068d |
1979 | * See if this is a self-closing type and change |
| 1980 | * tagtype appropriately. |
| 1981 | */ |
| 691a2d25 |
1982 | if ($tagtype == 1 |
| 8bd0068d |
1983 | && in_array($tagname, $self_closing_tags)){ |
| 2dd879b8 |
1984 | $tagtype = 3; |
| 691a2d25 |
1985 | } |
| 1986 | /** |
| 8bd0068d |
1987 | * See if we should skip this tag and any content |
| 1988 | * inside it. |
| 1989 | */ |
| 691a2d25 |
1990 | if ($tagtype == 1 && |
| 8bd0068d |
1991 | in_array($tagname, $rm_tags_with_content)){ |
| 691a2d25 |
1992 | $skip_content = $tagname; |
| 1993 | } else { |
| da2415c1 |
1994 | if (($rm_tags == false |
| 8bd0068d |
1995 | && in_array($tagname, $tag_list)) || |
| 1996 | ($rm_tags == true && |
| 1997 | !in_array($tagname, $tag_list))){ |
| 691a2d25 |
1998 | $tagname = false; |
| 1999 | } else { |
| 2dd879b8 |
2000 | /** |
| 8bd0068d |
2001 | * Convert body into div. |
| 2002 | */ |
| 2dd879b8 |
2003 | if ($tagname == "body"){ |
| 2004 | $tagname = "div"; |
| da2415c1 |
2005 | $attary = sq_body2div($attary, $mailbox, |
| 8bd0068d |
2006 | $message, $id); |
| 2dd879b8 |
2007 | } |
| 691a2d25 |
2008 | if ($tagtype == 1){ |
| 2009 | if (isset($open_tags{$tagname})){ |
| 2010 | $open_tags{$tagname}++; |
| 2011 | } else { |
| 2012 | $open_tags{$tagname}=1; |
| 2013 | } |
| 2014 | } |
| 2015 | /** |
| 8bd0068d |
2016 | * This is where we run other checks. |
| 2017 | */ |
| 691a2d25 |
2018 | if (is_array($attary) && sizeof($attary) > 0){ |
| 2019 | $attary = sq_fixatts($tagname, |
| 8bd0068d |
2020 | $attary, |
| 2021 | $rm_attnames, |
| 2022 | $bad_attvals, |
| 2023 | $add_attr_to_tag, |
| 2024 | $message, |
| 2025 | $id, |
| 2026 | $mailbox |
| 2027 | ); |
| 691a2d25 |
2028 | } |
| 2029 | } |
| 2030 | } |
| 691a2d25 |
2031 | } |
| 2032 | } |
| 2033 | if ($tagname != false && $skip_content == false){ |
| 2034 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
| 2035 | } |
| 691a2d25 |
2036 | } |
| 2037 | $curpos = $gt+1; |
| a3daaaf3 |
2038 | } |
| 691a2d25 |
2039 | $trusted .= substr($body, $curpos, strlen($body)-$curpos); |
| 2040 | if ($force_tag_closing == true){ |
| 2041 | foreach ($open_tags as $tagname=>$opentimes){ |
| 2042 | while ($opentimes > 0){ |
| 2043 | $trusted .= '</' . $tagname . '>'; |
| 2044 | $opentimes--; |
| 2045 | } |
| 2046 | } |
| 2047 | $trusted .= "\n"; |
| 2048 | } |
| 2049 | $trusted .= "<!-- end sanitized html -->\n"; |
| 2050 | return $trusted; |
| 2051 | } |
| 451f74a2 |
2052 | |
| 691a2d25 |
2053 | /** |
| 8bd0068d |
2054 | * This is a wrapper function to call html sanitizing routines. |
| 2055 | * |
| 2056 | * @param $body the body of the message |
| 2057 | * @param $id the id of the message |
| c189a963 |
2058 | |
| 2059 | * @param $message |
| 2060 | * @param $mailbox |
| 2061 | * @param boolean $take_mailto_links When TRUE, converts mailto: links |
| 2062 | * into internal SM compose links |
| 2063 | * (optional; default = TRUE) |
| 8bd0068d |
2064 | * @return a string with html safe to display in the browser. |
| 2065 | */ |
| c189a963 |
2066 | function magicHTML($body, $id, $message, $mailbox = 'INBOX', $take_mailto_links =true) { |
| 2067 | |
| 2068 | require_once(SM_PATH . 'functions/url_parser.php'); // for $MailTo_PReg_Match |
| 2069 | |
| 691a2d25 |
2070 | global $attachment_common_show_images, $view_unsafe_images, |
| 8bd0068d |
2071 | $has_unsafe_images; |
| 691a2d25 |
2072 | /** |
| 8bd0068d |
2073 | * Don't display attached images in HTML mode. |
| 2074 | */ |
| 691a2d25 |
2075 | $attachment_common_show_images = false; |
| 2076 | $tag_list = Array( |
| 8bd0068d |
2077 | false, |
| 2078 | "object", |
| 2079 | "meta", |
| 2080 | "html", |
| 2081 | "head", |
| 2082 | "base", |
| 2083 | "link", |
| 2084 | "frame", |
| 2085 | "iframe", |
| 2086 | "plaintext", |
| 2087 | "marquee" |
| 2088 | ); |
| 691a2d25 |
2089 | |
| 2090 | $rm_tags_with_content = Array( |
| 8bd0068d |
2091 | "script", |
| 2092 | "applet", |
| 2093 | "embed", |
| 2094 | "title", |
| 2095 | "frameset", |
| 0493ed11 |
2096 | "xmp", |
| 8bd0068d |
2097 | "xml" |
| 2098 | ); |
| 691a2d25 |
2099 | |
| 2100 | $self_closing_tags = Array( |
| 8bd0068d |
2101 | "img", |
| 2102 | "br", |
| 2103 | "hr", |
| 2104 | "input", |
| 2105 | "outbind" |
| 2106 | ); |
| 691a2d25 |
2107 | |
| 2dd879b8 |
2108 | $force_tag_closing = true; |
| 691a2d25 |
2109 | |
| 2110 | $rm_attnames = Array( |
| 8bd0068d |
2111 | "/.*/" => |
| 2112 | Array( |
| 2113 | "/target/i", |
| 2114 | "/^on.*/i", |
| 2115 | "/^dynsrc/i", |
| 2116 | "/^data.*/i", |
| 2117 | "/^lowsrc.*/i" |
| 2118 | ) |
| 2119 | ); |
| 691a2d25 |
2120 | |
| 2121 | $secremoveimg = "../images/" . _("sec_remove_eng.png"); |
| 2122 | $bad_attvals = Array( |
| 8bd0068d |
2123 | "/.*/" => |
| 691a2d25 |
2124 | Array( |
| 0a6ec9b5 |
2125 | "/^src|background/i" => |
| 8bd0068d |
2126 | Array( |
| 691a2d25 |
2127 | Array( |
| 8bd0068d |
2128 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
| 2129 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
| 2130 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
| 691a2d25 |
2131 | ), |
| 8bd0068d |
2132 | Array( |
| 2133 | "\\1$secremoveimg\\2", |
| 2134 | "\\1$secremoveimg\\2", |
| 2135 | "\\1$secremoveimg\\2", |
| 8bd0068d |
2136 | ) |
| 2137 | ), |
| 0a6ec9b5 |
2138 | "/^href|action/i" => |
| 8bd0068d |
2139 | Array( |
| 0a6ec9b5 |
2140 | Array( |
| 8bd0068d |
2141 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
| 2142 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
| 2143 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
| 0a6ec9b5 |
2144 | ), |
| 691a2d25 |
2145 | Array( |
| 8bd0068d |
2146 | "\\1#\\1", |
| 2147 | "\\1#\\1", |
| 2148 | "\\1#\\1" |
| 02474e43 |
2149 | ) |
| 8bd0068d |
2150 | ), |
| 2151 | "/^style/i" => |
| 2152 | Array( |
| 2153 | Array( |
| 5db90261 |
2154 | "/\/\*.*\*\//", |
| 8bd0068d |
2155 | "/expression/i", |
| 2156 | "/binding/i", |
| 2157 | "/behaviou*r/i", |
| 2158 | "/include-source/i", |
| 2159 | "/position\s*:\s*absolute/i", |
| 2160 | "/url\s*\(\s*([\'\"])\s*\S+script\s*:.*([\'\"])\s*\)/si", |
| 2161 | "/url\s*\(\s*([\'\"])\s*mocha\s*:.*([\'\"])\s*\)/si", |
| 2162 | "/url\s*\(\s*([\'\"])\s*about\s*:.*([\'\"])\s*\)/si", |
| 2163 | "/(.*)\s*:\s*url\s*\(\s*([\'\"]*)\s*\S+script\s*:.*([\'\"]*)\s*\)/si" |
| 2164 | ), |
| 2165 | Array( |
| 5db90261 |
2166 | "", |
| 8bd0068d |
2167 | "idiocy", |
| 2168 | "idiocy", |
| 2169 | "idiocy", |
| 2170 | "idiocy", |
| 2171 | "", |
| 2172 | "url(\\1#\\1)", |
| 2173 | "url(\\1#\\1)", |
| 2174 | "url(\\1#\\1)", |
| 8bd0068d |
2175 | "\\1:url(\\2#\\3)" |
| 2176 | ) |
| 691a2d25 |
2177 | ) |
| 8bd0068d |
2178 | ) |
| 691a2d25 |
2179 | ); |
| 5262d9a6 |
2180 | if( !sqgetGlobalVar('view_unsafe_images', $view_unsafe_images, SQ_GET) ) { |
| 2dd879b8 |
2181 | $view_unsafe_images = false; |
| 45071bd6 |
2182 | } |
| 691a2d25 |
2183 | if (!$view_unsafe_images){ |
| 2184 | /** |
| 8bd0068d |
2185 | * Remove any references to http/https if view_unsafe_images set |
| 2186 | * to false. |
| 2187 | */ |
| 02474e43 |
2188 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0], |
| 8bd0068d |
2189 | '/^([\'\"])\s*https*:.*([\'\"])/si'); |
| 02474e43 |
2190 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1], |
| 8bd0068d |
2191 | "\\1$secremoveimg\\1"); |
| 02474e43 |
2192 | array_push($bad_attvals{'/.*/'}{'/^style/i'}[0], |
| 7ef0b415 |
2193 | '/url\([\'\"]?https?:[^\)]*[\'\"]?\)/si'); |
| 02474e43 |
2194 | array_push($bad_attvals{'/.*/'}{'/^style/i'}[1], |
| 8bd0068d |
2195 | "url(\\1$secremoveimg\\1)"); |
| 691a2d25 |
2196 | } |
| 451f74a2 |
2197 | |
| 691a2d25 |
2198 | $add_attr_to_tag = Array( |
| 8bd0068d |
2199 | "/^a$/i" => |
| c25f2fbb |
2200 | Array('target'=>'"_blank"', |
| 02474e43 |
2201 | 'title'=>'"'._("This external link will open in a new window").'"' |
| 8bd0068d |
2202 | ) |
| 2203 | ); |
| da2415c1 |
2204 | $trusted = sq_sanitize($body, |
| 8bd0068d |
2205 | $tag_list, |
| 2206 | $rm_tags_with_content, |
| 2207 | $self_closing_tags, |
| 2208 | $force_tag_closing, |
| 2209 | $rm_attnames, |
| 2210 | $bad_attvals, |
| 2211 | $add_attr_to_tag, |
| 2212 | $message, |
| 2213 | $id, |
| 2214 | $mailbox |
| 2215 | ); |
| f83c60a2 |
2216 | if (preg_match("|$secremoveimg|i", $trusted)){ |
| 691a2d25 |
2217 | $has_unsafe_images = true; |
| da2415c1 |
2218 | } |
| c189a963 |
2219 | |
| 2220 | // we want to parse mailto's in HTML output, change to SM compose links |
| 2221 | // this is a modified version of code from url_parser.php... but Marc is |
| 2222 | // right: we need a better filtering implementation; adding this randomly |
| 2223 | // here is not a great solution |
| 2224 | // |
| 2225 | if ($take_mailto_links) { |
| 2226 | // parseUrl($trusted); // this even parses URLs inside of tags... too aggressive |
| 2227 | global $MailTo_PReg_Match; |
| 2228 | $MailTo_PReg_Match = '/mailto:' . substr($MailTo_PReg_Match, 1); |
| 2229 | if ((preg_match_all($MailTo_PReg_Match, $trusted, $regs)) && ($regs[0][0] != '')) { |
| 2230 | foreach ($regs[0] as $i => $mailto_before) { |
| 2231 | $mailto_params = $regs[10][$i]; |
| 2232 | // get rid of any tailing quote since we have to add send_to to the end |
| 2233 | // |
| 2234 | if (substr($mailto_before, strlen($mailto_before) - 1) == '"') |
| 2235 | $mailto_before = substr($mailto_before, 0, strlen($mailto_before) - 1); |
| 2236 | if (substr($mailto_params, strlen($mailto_params) - 1) == '"') |
| 2237 | $mailto_params = substr($mailto_params, 0, strlen($mailto_params) - 1); |
| 2238 | |
| 2239 | if ($regs[1][$i]) { //if there is an email addr before '?', we need to merge it with the params |
| 2240 | $to = 'to=' . $regs[1][$i]; |
| 2241 | if (strpos($mailto_params, 'to=') > -1) //already a 'to=' |
| 2242 | $mailto_params = str_replace('to=', $to . '%2C%20', $mailto_params); |
| 2243 | else { |
| 2244 | if ($mailto_params) //already some params, append to them |
| 2245 | $mailto_params .= '&' . $to; |
| 2246 | else |
| 2247 | $mailto_params .= '?' . $to; |
| 2248 | } |
| 2249 | } |
| 2250 | |
| 2251 | $url_str = preg_replace(array('/to=/i', '/(?<!b)cc=/i', '/bcc=/i'), array('send_to=', 'send_to_cc=', 'send_to_bcc='), $mailto_params); |
| 2252 | |
| 2253 | // we'll already have target=_blank, no need to allow comp_in_new |
| 2254 | // here (which would be a lot more work anyway) |
| 2255 | // |
| 2256 | global $compose_new_win; |
| 2257 | $temp_comp_in_new = $compose_new_win; |
| 2258 | $compose_new_win = 0; |
| 2259 | $comp_uri = makeComposeLink('src/compose.php' . $url_str, $mailto_before); |
| 2260 | $compose_new_win = $temp_comp_in_new; |
| 2261 | |
| 2262 | // remove <a href=" and anything after the next quote (we only |
| 2263 | // need the uri, not the link HTML) in compose uri |
| 2264 | // |
| 2265 | $comp_uri = substr($comp_uri, 9); |
| 2266 | $comp_uri = substr($comp_uri, 0, strpos($comp_uri, '"', 1)); |
| 2267 | $trusted = str_replace($mailto_before, $comp_uri, $trusted); |
| 2268 | } |
| 2269 | } |
| 2270 | } |
| 2271 | |
| 691a2d25 |
2272 | return $trusted; |
| 451f74a2 |
2273 | } |
| a4a70693 |
2274 | |
| da2415c1 |
2275 | /** |
| 8bd0068d |
2276 | * function SendDownloadHeaders - send file to the browser |
| 2277 | * |
| 2278 | * Original Source: SM core src/download.php |
| 2279 | * moved here to make it available to other code, and separate |
| 2280 | * front end from back end functionality. |
| 2281 | * |
| 2282 | * @param string $type0 first half of mime type |
| 2283 | * @param string $type1 second half of mime type |
| 2284 | * @param string $filename filename to tell the browser for downloaded file |
| 2285 | * @param boolean $force whether to force the download dialog to pop |
| 2286 | * @param optional integer $filesize send the Content-Header and length to the browser |
| 2287 | * @return void |
| 2288 | */ |
| 02474e43 |
2289 | function SendDownloadHeaders($type0, $type1, $filename, $force, $filesize=0) { |
| 2290 | global $languages, $squirrelmail_language; |
| cfffd60b |
2291 | $isIE = $isIE6plus = false; |
| 02474e43 |
2292 | |
| 2293 | sqgetGlobalVar('HTTP_USER_AGENT', $HTTP_USER_AGENT, SQ_SERVER); |
| 2294 | |
| 2295 | if (strstr($HTTP_USER_AGENT, 'compatible; MSIE ') !== false && |
| 8bd0068d |
2296 | strstr($HTTP_USER_AGENT, 'Opera') === false) { |
| cfffd60b |
2297 | $isIE = true; |
| 02474e43 |
2298 | } |
| 2299 | |
| cfffd60b |
2300 | if (preg_match('/compatible; MSIE ([0-9]+)/', $HTTP_USER_AGENT, $match) && |
| 2301 | ((int)$match[1]) >= 6 && strstr($HTTP_USER_AGENT, 'Opera') === false) { |
| 2302 | $isIE6plus = true; |
| 02474e43 |
2303 | } |
| 2304 | |
| 2305 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 8bd0068d |
2306 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename')) { |
| 02474e43 |
2307 | $filename = |
| 8bd0068d |
2308 | call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_downloadfilename', $filename, $HTTP_USER_AGENT); |
| 02474e43 |
2309 | } else { |
| 2310 | $filename = ereg_replace('[\\/:\*\?"<>\|;]', '_', str_replace(' ', ' ', $filename)); |
| 2311 | } |
| 2312 | |
| 2313 | // A Pox on Microsoft and it's Internet Explorer! |
| 2314 | // |
| 2315 | // IE has lots of bugs with file downloads. |
| 2316 | // It also has problems with SSL. Both of these cause problems |
| 2317 | // for us in this function. |
| 2318 | // |
| 2319 | // See this article on Cache Control headers and SSL |
| 2320 | // http://support.microsoft.com/default.aspx?scid=kb;en-us;323308 |
| 2321 | // |
| 2322 | // The best thing you can do for IE is to upgrade to the latest |
| 2323 | // version |
| 2324 | //set all the Cache Control Headers for IE |
| 2325 | if ($isIE) { |
| 2326 | $filename=rawurlencode($filename); |
| 2327 | header ("Pragma: public"); |
| 8bd0068d |
2328 | header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); // HTTP/1.1 |
| 02474e43 |
2329 | header ("Cache-Control: post-check=0, pre-check=0", false); |
| 8bd0068d |
2330 | header ("Cache-Control: private"); |
| 02474e43 |
2331 | |
| 2332 | //set the inline header for IE, we'll add the attachment header later if we need it |
| 2333 | header ("Content-Disposition: inline; filename=$filename"); |
| 2334 | } |
| 2335 | |
| 2336 | if (!$force) { |
| 2337 | // Try to show in browser window |
| 2338 | header ("Content-Disposition: inline; filename=\"$filename\""); |
| 2339 | header ("Content-Type: $type0/$type1; name=\"$filename\""); |
| 2340 | } else { |
| 2341 | // Try to pop up the "save as" box |
| 2342 | |
| 2343 | // IE makes this hard. It pops up 2 save boxes, or none. |
| 2344 | // http://support.microsoft.com/support/kb/articles/Q238/5/88.ASP |
| 2345 | // http://support.microsoft.com/default.aspx?scid=kb;EN-US;260519 |
| 2346 | // But, according to Microsoft, it is "RFC compliant but doesn't |
| 2347 | // take into account some deviations that allowed within the |
| 2348 | // specification." Doesn't that mean RFC non-compliant? |
| 2349 | // http://support.microsoft.com/support/kb/articles/Q258/4/52.ASP |
| 2350 | |
| 2351 | // all browsers need the application/octet-stream header for this |
| 2352 | header ("Content-Type: application/octet-stream; name=\"$filename\""); |
| 2353 | |
| 2354 | // http://support.microsoft.com/support/kb/articles/Q182/3/15.asp |
| 2355 | // Do not have quotes around filename, but that applied to |
| 2356 | // "attachment"... does it apply to inline too? |
| 2357 | header ("Content-Disposition: attachment; filename=\"$filename\""); |
| 2358 | |
| cfffd60b |
2359 | if ($isIE && !$isIE6plus) { |
| 02474e43 |
2360 | // This combination seems to work mostly. IE 5.5 SP 1 has |
| 2361 | // known issues (see the Microsoft Knowledge Base) |
| 2362 | |
| 2363 | // This works for most types, but doesn't work with Word files |
| 2364 | header ("Content-Type: application/download; name=\"$filename\""); |
| 2365 | |
| 2366 | // These are spares, just in case. :-) |
| 2367 | //header("Content-Type: $type0/$type1; name=\"$filename\""); |
| 2368 | //header("Content-Type: application/x-msdownload; name=\"$filename\""); |
| 2369 | //header("Content-Type: application/octet-stream; name=\"$filename\""); |
| 2370 | } else { |
| 2371 | // another application/octet-stream forces download for Netscape |
| 2372 | header ("Content-Type: application/octet-stream; name=\"$filename\""); |
| 2373 | } |
| 2374 | } |
| 2375 | |
| 2376 | //send the content-length header if the calling function provides it |
| 2377 | if ($filesize > 0) { |
| 2378 | header("Content-Length: $filesize"); |
| 2379 | } |
| 07c49f57 |
2380 | |
| 8d863f64 |
2381 | } // end fn SendDownloadHeaders |
| da2415c1 |
2382 | |
| 40a34e57 |
2383 | ?> |
projects / squirrelmail.git / blame