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comparison program/steps/mail/get.inc @ 0:4681f974d28b

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vanilla 1.3.3 distro, I hope
author Charlie Root
date Thu, 04 Jan 2018 15:52:31 -0500
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-1:000000000000 0:4681f974d28b
1 <?php
2
3 /**
4 +-----------------------------------------------------------------------+
5 | program/steps/mail/get.inc |
6 | |
7 | This file is part of the Roundcube Webmail client |
8 | Copyright (C) 2005-2016, The Roundcube Dev Team |
9 | |
10 | Licensed under the GNU General Public License version 3 or |
11 | any later version with exceptions for skins & plugins. |
12 | See the README file for a full license statement. |
13 | |
14 | PURPOSE: |
15 | Delivering a specific uploaded file or mail message attachment |
16 | |
17 +-----------------------------------------------------------------------+
18 | Author: Thomas Bruederli <roundcube@gmail.com> |
19 | Author: Aleksander Machniak <alec@alec.pl> |
20 +-----------------------------------------------------------------------+
21 */
22
23
24 // show loading page
25 if (!empty($_GET['_preload'])) {
26 unset($_GET['_preload']);
27 unset($_GET['_safe']);
28
29 $url = $RCMAIL->url($_GET + array('_mimewarning' => 1, '_embed' => 1));
30 $message = $RCMAIL->gettext('loadingdata');
31
32 header('Content-Type: text/html; charset=' . RCUBE_CHARSET);
33 print "<html>\n<head>\n"
34 . '<meta http-equiv="refresh" content="0; url='.rcube::Q($url).'">' . "\n"
35 . '<meta http-equiv="content-type" content="text/html; charset='.RCUBE_CHARSET.'">' . "\n"
36 . "</head>\n<body>\n$message\n</body>\n</html>";
37 exit;
38 }
39
40 $attachment = new rcmail_attachment_handler;
41 $mimetype = $attachment->mimetype;
42 $filename = $attachment->filename;
43
44 // show part page
45 if (!empty($_GET['_frame'])) {
46 $OUTPUT->set_pagetitle($filename);
47
48 // register UI objects
49 $OUTPUT->add_handlers(array(
50 'messagepartframe' => 'rcmail_message_part_frame',
51 'messagepartcontrols' => 'rcmail_message_part_controls',
52 ));
53
54 $part_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_GET);
55 $uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET);
56
57 // message/rfc822 preview (Note: handle also multipart/ parts, they can
58 // come from Enigma, which replaces message/rfc822 with real mimetype)
59 if ($part_id && ($mimetype == 'message/rfc822' || strpos($mimetype, 'multipart/') === 0)) {
60 $uid = preg_replace('/\.[0-9.]+/', '', $uid);
61 $uid .= '.' . $part_id;
62
63 $OUTPUT->set_env('is_message', true);
64 }
65
66 $OUTPUT->set_env('mailbox', $RCMAIL->storage->get_folder());
67 $OUTPUT->set_env('uid', $uid);
68 $OUTPUT->set_env('part', $part_id);
69 $OUTPUT->set_env('filename', $filename);
70 $OUTPUT->set_env('mimetype', $mimetype);
71
72 $OUTPUT->send('messagepart');
73 exit;
74 }
75
76 // render thumbnail of an image attachment
77 if (!empty($_GET['_thumb']) && $attachment->is_valid()) {
78 $thumbnail_size = $RCMAIL->config->get('image_thumbnail_size', 240);
79 $temp_dir = $RCMAIL->config->get('temp_dir');
80 $file_ident = $attachment->ident;
81 $cache_basename = $temp_dir . '/' . md5($file_ident . ':' . $RCMAIL->user->ID . ':' . $thumbnail_size);
82 $cache_file = $cache_basename . '.thumb';
83
84 // render thumbnail image if not done yet
85 if (!is_file($cache_file) && $attachment->body_to_file($orig_name = $cache_basename . '.tmp')) {
86 $image = new rcube_image($orig_name);
87
88 if ($imgtype = $image->resize($thumbnail_size, $cache_file, true)) {
89 $mimetype = 'image/' . $imgtype;
90 }
91 else {
92 // Resize failed, we need to check the file mimetype
93 // So, we do not exit here, but goto generic file body handler below
94 $_GET['_thumb'] = 0;
95 $_REQUEST['_embed'] = 1;
96 }
97 }
98
99 if (!empty($_GET['_thumb'])) {
100 if (is_file($cache_file)) {
101 $RCMAIL->output->future_expire_header(3600);
102 header('Content-Type: ' . $mimetype);
103 header('Content-Length: ' . filesize($cache_file));
104 readfile($cache_file);
105 }
106
107 exit;
108 }
109 }
110
111 // Handle attachment body (display or download)
112 if (empty($_GET['_thumb']) && $attachment->is_valid()) {
113 // require CSRF protected url for downloads
114 if (!empty($_GET['_download'])) {
115 $RCMAIL->request_security_check(rcube_utils::INPUT_GET);
116 }
117
118 $extensions = rcube_mime::get_mime_extensions($mimetype);
119
120 // compare file mimetype with the stated content-type headers and file extension to avoid malicious operations
121 if (!empty($_REQUEST['_embed']) && empty($_REQUEST['_nocheck'])) {
122 $file_extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
123
124 // 1. compare filename suffix with expected suffix derived from mimetype
125 $valid = $file_extension && in_array($file_extension, (array)$extensions) || empty($extensions) || !empty($_REQUEST['_mimeclass']);
126
127 // 2. detect the real mimetype of the attachment part and compare it with the stated mimetype and filename extension
128 if ($valid || !$file_extension || $mimetype == 'application/octet-stream' || stripos($mimetype, 'text/') === 0) {
129 $tmp_body = $attachment->body(2048);
130
131 // detect message part mimetype
132 $real_mimetype = rcube_mime::file_content_type($tmp_body, $filename, $mimetype, true, true);
133 list($real_ctype_primary, $real_ctype_secondary) = explode('/', $real_mimetype);
134
135 // accept text/plain with any extension
136 if ($real_mimetype == 'text/plain' && $real_mimetype == $mimetype) {
137 $valid_extension = true;
138 }
139 // ignore differences in text/* mimetypes. Filetype detection isn't very reliable here
140 else if ($real_ctype_primary == 'text' && strpos($mimetype, $real_ctype_primary) === 0) {
141 $real_mimetype = $mimetype;
142 $valid_extension = true;
143 }
144 // ignore filename extension if mimeclass matches (#1489029)
145 else if (!empty($_REQUEST['_mimeclass']) && $real_ctype_primary == $_REQUEST['_mimeclass']) {
146 $valid_extension = true;
147 }
148 else {
149 // get valid file extensions
150 $extensions = rcube_mime::get_mime_extensions($real_mimetype);
151 $valid_extension = !$file_extension || empty($extensions) || in_array($file_extension, (array)$extensions);
152 }
153
154 // fix mimetype for images wrongly declared as octet-stream
155 if ($mimetype == 'application/octet-stream' && strpos($real_mimetype, 'image/') === 0 && $valid_extension) {
156 $mimetype = $real_mimetype;
157 }
158 // fix mimetype for images with wrong mimetype
159 else if (strpos($real_mimetype, 'image/') === 0 && strpos($mimetype, 'image/') === 0) {
160 $mimetype = $real_mimetype;
161 }
162
163 // "fix" real mimetype the same way the original is before comparison
164 $real_mimetype = rcmail_fix_mimetype($real_mimetype);
165
166 $valid = $real_mimetype == $mimetype && $valid_extension;
167 }
168 else {
169 $real_mimetype = $mimetype;
170 }
171
172 // show warning if validity checks failed
173 if (!$valid) {
174 // send blocked.gif for expected images
175 if (empty($_REQUEST['_mimewarning']) && strpos($mimetype, 'image/') === 0) {
176 // Do not cache. Failure might be the result of a misconfiguration, thus real content should be returned once fixed.
177 $content = $RCMAIL->get_resource_content('blocked.gif');
178 $OUTPUT->nocacheing_headers();
179 header("Content-Type: image/gif");
180 header("Content-Transfer-Encoding: binary");
181 header("Content-Length: " . strlen($content));
182 echo $content;
183 }
184 else { // html warning with a button to load the file anyway
185 $OUTPUT = new rcmail_html_page();
186 $OUTPUT->write(html::tag('html', null, html::tag('body', 'embed',
187 html::div(array('class' => 'rcmail-inline-message rcmail-inline-warning'),
188 $RCMAIL->gettext(array(
189 'name' => 'attachmentvalidationerror',
190 'vars' => array(
191 'expected' => $mimetype . ($file_extension ? " (.$file_extension)" : ''),
192 'detected' => $real_mimetype . ($extensions[0] ? " (.$extensions[0])" : ''),
193 )
194 ))
195 . html::p(array('class' => 'rcmail-inline-buttons'),
196 html::tag('button', array(
197 'onclick' => "location.href='" . $RCMAIL->url(array_merge($_GET, array('_nocheck' => 1))) . "'"
198 ),
199 $RCMAIL->gettext('showanyway'))
200 )
201 ))));
202 }
203
204 exit;
205 }
206 }
207
208 // TIFF/WEBP to JPEG conversion, if needed
209 foreach (array('tiff', 'webp') as $type) {
210 $img_support = !empty($_SESSION['browser_caps']) && !empty($_SESSION['browser_caps'][$type]);
211 if (!empty($_REQUEST['_embed']) && !$img_support
212 && $attachment->image_type() == 'image/' . $type
213 && rcube_image::is_convertable('image/' . $type)
214 ) {
215 $convert2jpeg = true;
216 $mimetype = 'image/jpeg';
217 break;
218 }
219 }
220
221 $browser = $RCMAIL->output->browser;
222 list($ctype_primary, $ctype_secondary) = explode('/', $mimetype);
223
224 if (!empty($_GET['_download']) && $ctype_primary == 'text') {
225 header("Content-Type: text/$ctype_secondary; charset=" . $attachment->charset);
226 }
227 else {
228 header("Content-Type: $mimetype");
229 header("Content-Transfer-Encoding: binary");
230 }
231
232 // deliver part content
233 if ($mimetype == 'text/html' && empty($_GET['_download'])) {
234 // Check if we have enough memory to handle the message in it
235 // #1487424: we need up to 10x more memory than the body
236 if (!rcube_utils::mem_check($attachment->size * 10)) {
237 $out = '<html><body>'
238 . $RCMAIL->gettext('messagetoobig'). ' '
239 . html::a($RCMAIL->url(array_merge($_GET, array('download' => 1))), $RCMAIL->gettext('download'))
240 . '</body></html>';
241 }
242 else {
243 // render HTML body
244 $out = $attachment->html();
245
246 // insert remote objects warning into HTML body
247 if ($REMOTE_OBJECTS) {
248 $body_start = 0;
249 if ($body_pos = strpos($out, '<body')) {
250 $body_start = strpos($out, '>', $body_pos) + 1;
251 }
252
253 $out = substr($out, 0, $body_start)
254 . html::div(array('class' => 'rcmail-inline-message rcmail-inline-warning'),
255 rcube::Q($RCMAIL->gettext('blockedimages')) . '&nbsp;' .
256 html::tag('button',
257 array('onclick' => "location.href='" . $RCMAIL->url(array_merge($_GET, array('_safe' => 1))) . "'"),
258 rcube::Q($RCMAIL->gettext('showimages')))
259 )
260 . substr($out, $body_start);
261 }
262 }
263
264 $OUTPUT = new rcmail_html_page();
265 $OUTPUT->write($out);
266 exit;
267 }
268
269 // don't kill the connection if download takes some more time
270 @set_time_limit(3600);
271
272 $filename = $browser->ie ? rawurlencode($filename) : addcslashes($filename, '"');
273 $disposition = !empty($_GET['_download']) ? 'attachment' : 'inline';
274
275 // add filename extension if missing
276 if (!pathinfo($filename, PATHINFO_EXTENSION) && ($extensions = rcube_mime::get_mime_extensions($mimetype))) {
277 $filename .= '.' . $extensions[0];
278 }
279
280 header("Content-Disposition: $disposition; filename=\"$filename\"");
281
282 // handle tiff to jpeg conversion
283 if (!empty($convert2jpeg)) {
284 $temp_dir = unslashify($RCMAIL->config->get('temp_dir'));
285 $file_path = tempnam($temp_dir, 'rcmAttmnt');
286
287 // convert image to jpeg and send it to the browser
288 if ($attachment->body_to_file($file_path)) {
289 $image = new rcube_image($file_path);
290 if ($image->convert(rcube_image::TYPE_JPG, $file_path)) {
291 header("Content-Length: " . filesize($file_path));
292 readfile($file_path);
293 }
294 }
295 }
296 else {
297 $attachment->output($mimetype);
298 }
299
300 exit;
301 }
302
303 // if we arrive here, the requested part was not found
304 header('HTTP/1.1 404 Not Found');
305 exit;
306
307
308 /**
309 * Attachment properties table
310 */
311 function rcmail_message_part_controls($attrib)
312 {
313 global $attachment, $RCMAIL;
314
315 if (!$attachment->is_valid()) {
316 return '';
317 }
318
319 $table = new html_table(array('cols' => 2));
320
321 $table->add('title', rcube::Q($RCMAIL->gettext('namex')).':');
322 $table->add('header', rcube::Q($attachment->filename));
323
324 $table->add('title', rcube::Q($RCMAIL->gettext('type')).':');
325 $table->add('header', rcube::Q($attachment->mimetype));
326
327 $table->add('title', rcube::Q($RCMAIL->gettext('size')).':');
328 $table->add('header', rcube::Q($attachment->size()));
329
330 return $table->show($attrib);
331 }
332
333 /**
334 * Attachment preview frame
335 */
336 function rcmail_message_part_frame($attrib)
337 {
338 global $RCMAIL;
339
340 if ($RCMAIL->output->get_env('is_message')) {
341 $attrib['src'] = $RCMAIL->url(array(
342 'task' => 'mail',
343 'action' => 'preview',
344 'uid' => $RCMAIL->output->get_env('uid'),
345 'mbox' => $RCMAIL->output->get_env('mailbox'),
346 'framed' => 1,
347 ));
348 }
349 else {
350 $mimetype = $RCMAIL->output->get_env('mimetype');
351 $frame_replace = strpos($mimetype, 'text/') === 0 ? '_embed=' : '_preload=';
352 $attrib['src'] = './?' . str_replace('_frame=', $frame_replace, $_SERVER['QUERY_STRING']);
353 }
354
355 $RCMAIL->output->add_gui_object('messagepartframe', $attrib['id']);
356
357 return html::iframe($attrib);
358 }
359
360 /**
361 * Wrapper class with unified access to attachment properties and body
362 *
363 * Unified for message parts as well as uploaded attachments
364 */
365 class rcmail_attachment_handler
366 {
367 public $filename;
368 public $size;
369 public $mimetype;
370 public $ident;
371 public $charset = RCUBE_CHARSET;
372
373 private $message;
374 private $part;
375 private $upload;
376 private $body;
377 private $body_file;
378 private $download = false;
379
380 /**
381 * Class constructor.
382 * Reads request parameters and initializes attachment/part props.
383 */
384 public function __construct()
385 {
386 ob_end_clean();
387
388 $part_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_GET);
389 $file_id = rcube_utils::get_input_value('_file', rcube_utils::INPUT_GET);
390 $compose_id = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GET);
391 $uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET);
392 $rcube = rcube::get_instance();
393
394 $this->download = !empty($_GET['_download']);
395
396 // similar code as in program/steps/mail/show.inc
397 if (!empty($uid)) {
398 $rcube->config->set('prefer_html', true);
399 $this->message = new rcube_message($uid, null, intval($_GET['_safe']));
400
401 if ($this->part = $this->message->mime_parts[$part_id]) {
402 $this->filename = rcmail_attachment_name($this->part);
403 $this->mimetype = $this->part->mimetype;
404 $this->size = $this->part->size;
405 $this->ident = $this->message->headers->messageID . ':' . $this->part->mime_id . ':' . $this->size . ':' . $this->mimetype;
406 $this->charset = $this->part->charset ?: RCUBE_CHARSET;
407
408 if (empty($_GET['_frame'])) {
409 // allow post-processing of the attachment body
410 $plugin = $rcube->plugins->exec_hook('message_part_get', array(
411 'uid' => $uid,
412 'id' => $this->part->mime_id,
413 'mimetype' => $this->mimetype,
414 'part' => $this->part,
415 'download' => $this->download,
416 ));
417
418 if ($plugin['abort']) {
419 exit;
420 }
421
422 // overwrite modified vars from plugin
423 $this->mimetype = $plugin['mimetype'];
424
425 if ($plugin['body']) {
426 $this->body = $plugin['body'];
427 $this->size = strlen($this->body);
428 }
429 }
430 }
431 }
432 else if ($file_id && $compose_id) {
433 $file_id = preg_replace('/^rcmfile/', '', $file_id);
434
435 if (($compose = $_SESSION['compose_data_' . $compose_id])
436 && ($this->upload = $compose['attachments'][$file_id])
437 ) {
438 $this->filename = $this->upload['name'];
439 $this->mimetype = $this->upload['mimetype'];
440 $this->size = $this->upload['size'];
441 $this->ident = sprintf('%s:%s%s', $compose_id, $file_id, $this->size);
442 $this->charset = $this->upload['charset'] ?: RCUBE_CHARSET;
443 }
444 }
445
446 if (empty($this->part) && empty($this->upload)) {
447 header('HTTP/1.1 404 Not Found');
448 exit;
449 }
450
451 // check connection status
452 self::check_storage_status();
453
454 $this->mimetype = rcmail_fix_mimetype($this->mimetype);
455 }
456
457 /**
458 * Remove temp files, etc.
459 */
460 public function __destruct()
461 {
462 if ($this->body_file) {
463 @unlink($this->body_file);
464 }
465 }
466
467 /**
468 * Check if the object is a message part not uploaded file
469 *
470 * @return bool True if the object is a meesage part
471 */
472 public function is_message_part()
473 {
474 return !empty($this->message);
475 }
476
477 /**
478 * Object/request status
479 *
480 * @return bool Status
481 */
482 public function is_valid()
483 {
484 return !empty($this->part) || !empty($this->upload);
485 }
486
487 /**
488 * Return attachment/part mimetype if this is an image
489 * of supported type.
490 *
491 * @return string Image mimetype
492 */
493 public function image_type()
494 {
495 $part = (object) array(
496 'filename' => $this->filename,
497 'mimetype' => $this->mimetype,
498 );
499
500 return rcmail_part_image_type($part);
501 }
502
503 /**
504 * Formatted attachment/part size (with units)
505 *
506 * @return string Attachment/part size (with units)
507 */
508 public function size()
509 {
510 $part = $this->part ?: ((object) array('size' => $this->size, 'exact_size' => true));
511 return rcube::get_instance()->message_part_size($part);
512 }
513
514 /**
515 * Returns, prints or saves the attachment/part body
516 */
517 public function body($size = null, $fp = null)
518 {
519 // we may have the body in memory or file already
520 if ($this->body !== null) {
521 if ($fp == -1) {
522 echo $size ? substr($this->body, 0, $size) : $this->body;
523 }
524 else if ($fp) {
525 $result = fwrite($fp, $size ? substr($this->body, $size) : $this->body) !== false;
526 }
527 else {
528 $result = $size ? substr($this->body, 0, $size) : $this->body;
529 }
530 }
531 else if ($this->body_file) {
532 if ($size) {
533 $result = file_get_contents($this->body_file, false, null, 0, $size);
534 }
535 else {
536 $result = file_get_contents($this->body_file);
537 }
538
539 if ($fp == -1) {
540 echo $result;
541 }
542 else if ($fp) {
543 $result = fwrite($fp, $result) !== false;
544 }
545 }
546 else if ($this->message) {
547 $result = $this->message->get_part_body($this->part->mime_id, false, 0, $fp);
548
549 // check connection status
550 if (!$fp && $this->size && empty($result)) {
551 self::check_storage_status();
552 }
553 }
554 else if ($this->upload) {
555 // This hook retrieves the attachment contents from the file storage backend
556 $attachment = rcube::get_instance()->plugins->exec_hook('attachment_get', $this->upload);
557
558 if ($fp && $fp != -1) {
559 if ($attachment['data']) {
560 $result = fwrite($fp, $size ? substr($attachment['data'], 0, $size) : $attachment['data']) !== false;
561 }
562 else if ($attachment['path']) {
563 if ($fh = fopen($attachment['path'], 'rb')) {
564 $result = stream_copy_to_stream($fh, $fp, $size ? $size : -1);
565 }
566 }
567 }
568 else {
569 $data = $attachment['data'];
570 if (!$data && $attachment['path']) {
571 $data = file_get_contents($attachment['path']);
572 }
573
574 if ($fp == -1) {
575 echo $size ? substr($data, 0, $size) : $data;
576 }
577 else {
578 $result = $size ? substr($data, 0, $size) : $data;
579 }
580 }
581 }
582
583 return $result;
584 }
585
586 /**
587 * Save the body to a file
588 *
589 * @param string $filename File name with path
590 *
591 * @return bool True on success, False on failure
592 */
593 public function body_to_file($filename)
594 {
595 if ($filename && $this->size && ($fp = fopen($filename, 'w'))) {
596 $this->body(0, $fp);
597 $this->body_file = $filename;
598 fclose($fp);
599 @chmod(filename, 0600);
600
601 return true;
602 }
603
604 return false;
605 }
606
607 /**
608 * Output attachment body with content filtering
609 */
610 public function output($mimetype)
611 {
612 if (!$this->size) {
613 return false;
614 }
615
616 $secure = stripos($mimetype, 'image/') === false || $this->download;
617
618 // Remove <script> in SVG images
619 if (!$secure && stripos($mimetype, 'image/svg') === 0) {
620 if (!$this->body) {
621 $this->body = $this->body();
622 if (empty($this->body)) {
623 return false;
624 }
625 }
626
627 echo self::svg_filter($this->body);
628 return true;
629 }
630
631 if ($this->body !== null && !$this->download) {
632 header("Content-Length: " . strlen($this->body));
633 echo $this->body;
634 return true;
635 }
636
637 // Don't be tempted to set Content-Length to $part->d_parameters['size'] (#1490482)
638 // RFC2183 says "The size parameter indicates an approximate size"
639
640 return $this->body(0, -1);
641 }
642
643 /**
644 * Returns formatted HTML if the attachment is HTML
645 */
646 public function html()
647 {
648 list($type, $subtype) = explode($this->mimetype, '/');
649 $part = (object) array(
650 'charset' => $this->charset,
651 'ctype_secondary' => $subtype,
652 );
653
654 // get part body if not available
655 // fix formatting and charset
656 $body = rcube_message::format_part_body($this->body(), $part);
657
658 // show images?
659 $is_safe = $this->is_safe();
660
661 return rcmail_wash_html($body, array('safe' => $is_safe, 'inline_html' => false));
662 }
663
664 /**
665 * Remove <script> in SVG images
666 */
667 public static function svg_filter($body)
668 {
669 // clean SVG with washtml
670 $wash_opts = array(
671 'show_washed' => false,
672 'allow_remote' => false,
673 'charset' => RCUBE_CHARSET,
674 'html_elements' => array('title'),
675 // 'blocked_src' => 'program/resources/blocked.gif',
676 );
677
678 // initialize HTML washer
679 $washer = new rcube_washtml($wash_opts);
680
681 // allow CSS styles, will be sanitized by rcmail_washtml_callback()
682 $washer->add_callback('style', 'rcmail_washtml_callback');
683
684 return $washer->wash($body);
685 }
686
687 /**
688 * Handles nicely storage connection errors
689 */
690 public static function check_storage_status()
691 {
692 $error = rcmail::get_instance()->storage->get_error_code();
693
694 // Check if we have a connection error
695 if ($error == rcube_imap_generic::ERROR_BAD) {
696 ob_end_clean();
697
698 // Get action is often executed simultaneously.
699 // Some servers have MAXPERIP or other limits.
700 // To workaround this we'll wait for some time
701 // and try again (once).
702 // Note: Random sleep interval is used to minimize concurency
703 // in getting message parts
704
705 if (!isset($_GET['_redirected'])) {
706 usleep(rand(10,30)*100000); // 1-3 sec.
707 header('Location: ' . $_SERVER['REQUEST_URI'] . '&_redirected=1');
708 }
709 else {
710 rcube::raise_error(array(
711 'code' => 500, 'file' => __FILE__, 'line' => __LINE__,
712 'message' => 'Unable to get/display message part. IMAP connection error'),
713 true, true);
714 }
715
716 // Don't kill session, just quit (#1486995)
717 exit;
718 }
719 }
720
721 public function is_safe()
722 {
723 if ($this->message) {
724 return rcmail_check_safe($this->message);
725 }
726
727 return !empty($_GET['_safe']);
728 }
729 }