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<?php
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/**
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+-----------------------------------------------------------------------+
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| program/steps/mail/get.inc |
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| This file is part of the Roundcube Webmail client |
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| Copyright (C) 2005-2016, The Roundcube Dev Team |
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| |
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| Licensed under the GNU General Public License version 3 or |
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| any later version with exceptions for skins & plugins. |
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| See the README file for a full license statement. |
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| |
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| PURPOSE: |
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| Delivering a specific uploaded file or mail message attachment |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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| Author: Aleksander Machniak <alec@alec.pl> |
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+-----------------------------------------------------------------------+
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*/
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// show loading page
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if (!empty($_GET['_preload'])) {
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unset($_GET['_preload']);
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unset($_GET['_safe']);
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$url = $RCMAIL->url($_GET + array('_mimewarning' => 1, '_embed' => 1));
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$message = $RCMAIL->gettext('loadingdata');
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header('Content-Type: text/html; charset=' . RCUBE_CHARSET);
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print "<html>\n<head>\n"
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. '<meta http-equiv="refresh" content="0; url='.rcube::Q($url).'">' . "\n"
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. '<meta http-equiv="content-type" content="text/html; charset='.RCUBE_CHARSET.'">' . "\n"
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. "</head>\n<body>\n$message\n</body>\n</html>";
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exit;
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}
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$attachment = new rcmail_attachment_handler;
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$mimetype = $attachment->mimetype;
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$filename = $attachment->filename;
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// show part page
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if (!empty($_GET['_frame'])) {
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$OUTPUT->set_pagetitle($filename);
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// register UI objects
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$OUTPUT->add_handlers(array(
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'messagepartframe' => 'rcmail_message_part_frame',
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'messagepartcontrols' => 'rcmail_message_part_controls',
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));
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$part_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_GET);
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$uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET);
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// message/rfc822 preview (Note: handle also multipart/ parts, they can
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// come from Enigma, which replaces message/rfc822 with real mimetype)
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if ($part_id && ($mimetype == 'message/rfc822' || strpos($mimetype, 'multipart/') === 0)) {
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$uid = preg_replace('/\.[0-9.]+/', '', $uid);
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$uid .= '.' . $part_id;
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$OUTPUT->set_env('is_message', true);
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}
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$OUTPUT->set_env('mailbox', $RCMAIL->storage->get_folder());
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$OUTPUT->set_env('uid', $uid);
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$OUTPUT->set_env('part', $part_id);
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$OUTPUT->set_env('filename', $filename);
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$OUTPUT->set_env('mimetype', $mimetype);
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$OUTPUT->send('messagepart');
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exit;
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}
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// render thumbnail of an image attachment
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if (!empty($_GET['_thumb']) && $attachment->is_valid()) {
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$thumbnail_size = $RCMAIL->config->get('image_thumbnail_size', 240);
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$file_ident = $attachment->ident;
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$thumb_name = md5($file_ident . ':' . $RCMAIL->user->ID . ':' . $thumbnail_size) . '.thumb';
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$cache_file = rcube_utils::temp_filename($thumb_name, false, false);
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// render thumbnail image if not done yet
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if (!is_file($cache_file) && $attachment->body_to_file($orig_name = $cache_file . '.tmp')) {
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$image = new rcube_image($orig_name);
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if ($imgtype = $image->resize($thumbnail_size, $cache_file, true)) {
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$mimetype = 'image/' . $imgtype;
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}
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else {
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// Resize failed, we need to check the file mimetype
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// So, we do not exit here, but goto generic file body handler below
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$_GET['_thumb'] = 0;
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$_REQUEST['_embed'] = 1;
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}
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}
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if (!empty($_GET['_thumb'])) {
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if (is_file($cache_file)) {
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$RCMAIL->output->future_expire_header(3600);
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header('Content-Type: ' . $mimetype);
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header('Content-Length: ' . filesize($cache_file));
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readfile($cache_file);
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}
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exit;
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}
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}
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// Handle attachment body (display or download)
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if (empty($_GET['_thumb']) && $attachment->is_valid()) {
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// require CSRF protected url for downloads
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if (!empty($_GET['_download'])) {
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$RCMAIL->request_security_check(rcube_utils::INPUT_GET);
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}
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$extensions = rcube_mime::get_mime_extensions($mimetype);
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// compare file mimetype with the stated content-type headers and file extension to avoid malicious operations
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if (!empty($_REQUEST['_embed']) && empty($_REQUEST['_nocheck'])) {
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$file_extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
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// 1. compare filename suffix with expected suffix derived from mimetype
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$valid = $file_extension && in_array($file_extension, (array)$extensions) || empty($extensions) || !empty($_REQUEST['_mimeclass']);
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// 2. detect the real mimetype of the attachment part and compare it with the stated mimetype and filename extension
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if ($valid || !$file_extension || $mimetype == 'application/octet-stream' || stripos($mimetype, 'text/') === 0) {
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$tmp_body = $attachment->body(2048);
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// detect message part mimetype
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$real_mimetype = rcube_mime::file_content_type($tmp_body, $filename, $mimetype, true, true);
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list($real_ctype_primary, $real_ctype_secondary) = explode('/', $real_mimetype);
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// accept text/plain with any extension
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if ($real_mimetype == 'text/plain' && $real_mimetype == $mimetype) {
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$valid_extension = true;
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}
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// ignore differences in text/* mimetypes. Filetype detection isn't very reliable here
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else if ($real_ctype_primary == 'text' && strpos($mimetype, $real_ctype_primary) === 0) {
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$real_mimetype = $mimetype;
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$valid_extension = true;
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}
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// ignore filename extension if mimeclass matches (#1489029)
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else if (!empty($_REQUEST['_mimeclass']) && $real_ctype_primary == $_REQUEST['_mimeclass']) {
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$valid_extension = true;
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}
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else {
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// get valid file extensions
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$extensions = rcube_mime::get_mime_extensions($real_mimetype);
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$valid_extension = !$file_extension || empty($extensions) || in_array($file_extension, (array)$extensions);
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}
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// fix mimetype for images wrongly declared as octet-stream
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if ($mimetype == 'application/octet-stream' && strpos($real_mimetype, 'image/') === 0 && $valid_extension) {
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$mimetype = $real_mimetype;
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}
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// fix mimetype for images with wrong mimetype
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else if (strpos($real_mimetype, 'image/') === 0 && strpos($mimetype, 'image/') === 0) {
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$mimetype = $real_mimetype;
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}
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// "fix" real mimetype the same way the original is before comparison
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$real_mimetype = rcmail_fix_mimetype($real_mimetype);
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$valid = $real_mimetype == $mimetype && $valid_extension;
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}
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else {
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$real_mimetype = $mimetype;
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}
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// show warning if validity checks failed
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if (!$valid) {
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// send blocked.gif for expected images
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if (empty($_REQUEST['_mimewarning']) && strpos($mimetype, 'image/') === 0) {
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// Do not cache. Failure might be the result of a misconfiguration, thus real content should be returned once fixed.
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$content = $RCMAIL->get_resource_content('blocked.gif');
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$OUTPUT->nocacheing_headers();
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header("Content-Type: image/gif");
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header("Content-Transfer-Encoding: binary");
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header("Content-Length: " . strlen($content));
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echo $content;
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}
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// html warning with a button to load the file anyway
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else {
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$OUTPUT = new rcmail_html_page();
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$OUTPUT->register_inline_warning(
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$RCMAIL->gettext(array(
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'name' => 'attachmentvalidationerror',
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'vars' => array(
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'expected' => $mimetype . ($file_extension ? " (.$file_extension)" : ''),
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'detected' => $real_mimetype . ($extensions[0] ? " (.$extensions[0])" : ''),
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)
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)
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),
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$RCMAIL->gettext('showanyway'),
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$RCMAIL->url(array_merge($_GET, array('_nocheck' => 1)))
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);
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$OUTPUT->write();
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}
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exit;
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}
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}
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// TIFF/WEBP to JPEG conversion, if needed
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foreach (array('tiff', 'webp') as $type) {
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$img_support = !empty($_SESSION['browser_caps']) && !empty($_SESSION['browser_caps'][$type]);
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if (!empty($_REQUEST['_embed']) && !$img_support
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&& $attachment->image_type() == 'image/' . $type
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&& rcube_image::is_convertable('image/' . $type)
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) {
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$convert2jpeg = true;
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$mimetype = 'image/jpeg';
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break;
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}
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}
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// deliver part content
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if ($mimetype == 'text/html' && empty($_GET['_download'])) {
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$OUTPUT = new rcmail_html_page();
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// Check if we have enough memory to handle the message in it
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// #1487424: we need up to 10x more memory than the body
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if (!rcube_utils::mem_check($attachment->size * 10)) {
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$OUTPUT->register_inline_warning(
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$RCMAIL->gettext('messagetoobig'),
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$RCMAIL->gettext('download'),
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$RCMAIL->url(array_merge($_GET, array('_download' => 1)))
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);
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}
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else {
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// render HTML body
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$out = $attachment->html();
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// insert remote objects warning into HTML body
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if ($REMOTE_OBJECTS) {
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$OUTPUT->register_inline_warning(
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$RCMAIL->gettext('blockedresources'),
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$RCMAIL->gettext('allow'),
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$RCMAIL->url(array_merge($_GET, array('_safe' => 1)))
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);
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}
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}
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$OUTPUT->write($out);
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exit;
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}
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// add filename extension if missing
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if (!pathinfo($filename, PATHINFO_EXTENSION) && ($extensions = rcube_mime::get_mime_extensions($mimetype))) {
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$filename .= '.' . $extensions[0];
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}
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$OUTPUT->download_headers($filename, array(
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'type' => $mimetype,
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'type_charset' => $attachment->charset,
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'disposition' => !empty($_GET['_download']) ? 'attachment' : 'inline',
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));
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// handle tiff to jpeg conversion
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if (!empty($convert2jpeg)) {
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$file_path = rcube_utils::temp_filename('attmnt');
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// convert image to jpeg and send it to the browser
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if ($attachment->body_to_file($file_path)) {
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$image = new rcube_image($file_path);
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if ($image->convert(rcube_image::TYPE_JPG, $file_path)) {
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header("Content-Length: " . filesize($file_path));
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readfile($file_path);
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}
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}
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}
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else {
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$attachment->output($mimetype);
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}
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exit;
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}
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// if we arrive here, the requested part was not found
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header('HTTP/1.1 404 Not Found');
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exit;
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/**
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* Attachment properties table
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*/
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function rcmail_message_part_controls($attrib)
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{
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global $attachment, $RCMAIL;
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if (!$attachment->is_valid()) {
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return '';
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}
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$table = new html_table(array('cols' => 2));
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$table->add('title', rcube::Q($RCMAIL->gettext('namex')).':');
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$table->add('header', rcube::Q($attachment->filename));
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$table->add('title', rcube::Q($RCMAIL->gettext('type')).':');
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$table->add('header', rcube::Q($attachment->mimetype));
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$table->add('title', rcube::Q($RCMAIL->gettext('size')).':');
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$table->add('header', rcube::Q($attachment->size()));
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return $table->show($attrib);
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}
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/**
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* Attachment preview frame
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*/
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function rcmail_message_part_frame($attrib)
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{
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|
|
global $RCMAIL;
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|
|
if ($RCMAIL->output->get_env('is_message')) {
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|
|
$attrib['src'] = $RCMAIL->url(array(
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|
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'task' => 'mail',
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|
|
'action' => 'preview',
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|
|
'uid' => $RCMAIL->output->get_env('uid'),
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|
|
'mbox' => $RCMAIL->output->get_env('mailbox'),
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|
|
'framed' => 1,
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|
));
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|
|
}
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|
else {
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|
|
$mimetype = $RCMAIL->output->get_env('mimetype');
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|
|
$frame_replace = strpos($mimetype, 'text/') === 0 ? '_embed=' : '_preload=';
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|
|
$attrib['src'] = './?' . str_replace('_frame=', $frame_replace, $_SERVER['QUERY_STRING']);
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|
}
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|
|
$RCMAIL->output->add_gui_object('messagepartframe', $attrib['id']);
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|
return html::iframe($attrib);
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|
|
}
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|
|
/**
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|
|
* Wrapper class with unified access to attachment properties and body
|
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|
|
*
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|
|
* Unified for message parts as well as uploaded attachments
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|
|
*/
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|
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|
|
class rcmail_attachment_handler
|
|
|
|
|
{
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public $filename;
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|
|
public $size;
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|
|
public $mimetype;
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|
|
public $ident;
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|
|
public $charset = RCUBE_CHARSET;
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|
|
private $message;
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|
private $part;
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|
|
private $upload;
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|
|
private $body;
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|
|
private $body_file;
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|
|
private $download = false;
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|
|
/**
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|
|
* Class constructor.
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|
|
* Reads request parameters and initializes attachment/part props.
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|
|
|
*/
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|
|
|
|
public function __construct()
|
|
|
|
|
{
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|
|
ob_end_clean();
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|
|
$part_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_GET);
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|
|
$file_id = rcube_utils::get_input_value('_file', rcube_utils::INPUT_GET);
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|
|
|
$compose_id = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GET);
|
|
|
|
|
$uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET);
|
|
|
|
|
$rcube = rcube::get_instance();
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|
|
$this->download = !empty($_GET['_download']);
|
|
|
|
|
|
|
|
|
|
// similar code as in program/steps/mail/show.inc
|
|
|
|
|
if (!empty($uid)) {
|
|
|
|
|
$rcube->config->set('prefer_html', true);
|
|
|
|
|
$this->message = new rcube_message($uid, null, intval($_GET['_safe']));
|
|
|
|
|
|
|
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|
|
if ($this->part = $this->message->mime_parts[$part_id]) {
|
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|
|
$this->filename = rcmail_attachment_name($this->part);
|
|
|
|
|
$this->mimetype = $this->part->mimetype;
|
|
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|
|
$this->size = $this->part->size;
|
|
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|
|
$this->ident = $this->message->headers->messageID . ':' . $this->part->mime_id . ':' . $this->size . ':' . $this->mimetype;
|
|
|
|
|
$this->charset = $this->part->charset ?: RCUBE_CHARSET;
|
|
|
|
|
|
|
|
|
|
if (empty($_GET['_frame'])) {
|
|
|
|
|
// allow post-processing of the attachment body
|
|
|
|
|
$plugin = $rcube->plugins->exec_hook('message_part_get', array(
|
|
|
|
|
'uid' => $uid,
|
|
|
|
|
'id' => $this->part->mime_id,
|
|
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|
|
'mimetype' => $this->mimetype,
|
|
|
|
|
'part' => $this->part,
|
|
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|
|
'download' => $this->download,
|
|
|
|
|
));
|
|
|
|
|
|
|
|
|
|
if ($plugin['abort']) {
|
|
|
|
|
exit;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// overwrite modified vars from plugin
|
|
|
|
|
$this->mimetype = $plugin['mimetype'];
|
|
|
|
|
|
|
|
|
|
if ($plugin['body']) {
|
|
|
|
|
$this->body = $plugin['body'];
|
|
|
|
|
$this->size = strlen($this->body);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else if ($file_id && $compose_id) {
|
|
|
|
|
$file_id = preg_replace('/^rcmfile/', '', $file_id);
|
|
|
|
|
|
|
|
|
|
if (($compose = $_SESSION['compose_data_' . $compose_id])
|
|
|
|
|
&& ($this->upload = $compose['attachments'][$file_id])
|
|
|
|
|
) {
|
|
|
|
|
$this->filename = $this->upload['name'];
|
|
|
|
|
$this->mimetype = $this->upload['mimetype'];
|
|
|
|
|
$this->size = $this->upload['size'];
|
|
|
|
|
$this->ident = sprintf('%s:%s%s', $compose_id, $file_id, $this->size);
|
|
|
|
|
$this->charset = $this->upload['charset'] ?: RCUBE_CHARSET;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (empty($this->part) && empty($this->upload)) {
|
|
|
|
|
header('HTTP/1.1 404 Not Found');
|
|
|
|
|
exit;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// check connection status
|
|
|
|
|
self::check_storage_status();
|
|
|
|
|
|
|
|
|
|
$this->mimetype = rcmail_fix_mimetype($this->mimetype);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Remove temp files, etc.
|
|
|
|
|
*/
|
|
|
|
|
public function __destruct()
|
|
|
|
|
{
|
|
|
|
|
if ($this->body_file) {
|
|
|
|
|
@unlink($this->body_file);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Check if the object is a message part not uploaded file
|
|
|
|
|
*
|
|
|
|
|
* @return bool True if the object is a meesage part
|
|
|
|
|
*/
|
|
|
|
|
public function is_message_part()
|
|
|
|
|
{
|
|
|
|
|
return !empty($this->message);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Object/request status
|
|
|
|
|
*
|
|
|
|
|
* @return bool Status
|
|
|
|
|
*/
|
|
|
|
|
public function is_valid()
|
|
|
|
|
{
|
|
|
|
|
return !empty($this->part) || !empty($this->upload);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Return attachment/part mimetype if this is an image
|
|
|
|
|
* of supported type.
|
|
|
|
|
*
|
|
|
|
|
* @return string Image mimetype
|
|
|
|
|
*/
|
|
|
|
|
public function image_type()
|
|
|
|
|
{
|
|
|
|
|
$part = (object) array(
|
|
|
|
|
'filename' => $this->filename,
|
|
|
|
|
'mimetype' => $this->mimetype,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
return rcmail_part_image_type($part);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Formatted attachment/part size (with units)
|
|
|
|
|
*
|
|
|
|
|
* @return string Attachment/part size (with units)
|
|
|
|
|
*/
|
|
|
|
|
public function size()
|
|
|
|
|
{
|
|
|
|
|
$part = $this->part ?: ((object) array('size' => $this->size, 'exact_size' => true));
|
|
|
|
|
return rcube::get_instance()->message_part_size($part);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Returns, prints or saves the attachment/part body
|
|
|
|
|
*/
|
|
|
|
|
public function body($size = null, $fp = null)
|
|
|
|
|
{
|
|
|
|
|
// we may have the body in memory or file already
|
|
|
|
|
if ($this->body !== null) {
|
|
|
|
|
if ($fp == -1) {
|
|
|
|
|
echo $size ? substr($this->body, 0, $size) : $this->body;
|
|
|
|
|
}
|
|
|
|
|
else if ($fp) {
|
|
|
|
|
$result = fwrite($fp, $size ? substr($this->body, $size) : $this->body) !== false;
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
$result = $size ? substr($this->body, 0, $size) : $this->body;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else if ($this->body_file) {
|
|
|
|
|
if ($size) {
|
|
|
|
|
$result = file_get_contents($this->body_file, false, null, 0, $size);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
$result = file_get_contents($this->body_file);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ($fp == -1) {
|
|
|
|
|
echo $result;
|
|
|
|
|
}
|
|
|
|
|
else if ($fp) {
|
|
|
|
|
$result = fwrite($fp, $result) !== false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else if ($this->message) {
|
|
|
|
|
$result = $this->message->get_part_body($this->part->mime_id, false, 0, $fp);
|
|
|
|
|
|
|
|
|
|
// check connection status
|
|
|
|
|
if (!$fp && $this->size && empty($result)) {
|
|
|
|
|
self::check_storage_status();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else if ($this->upload) {
|
|
|
|
|
// This hook retrieves the attachment contents from the file storage backend
|
|
|
|
|
$attachment = rcube::get_instance()->plugins->exec_hook('attachment_get', $this->upload);
|
|
|
|
|
|
|
|
|
|
if ($fp && $fp != -1) {
|
|
|
|
|
if ($attachment['data']) {
|
|
|
|
|
$result = fwrite($fp, $size ? substr($attachment['data'], 0, $size) : $attachment['data']) !== false;
|
|
|
|
|
}
|
|
|
|
|
else if ($attachment['path']) {
|
|
|
|
|
if ($fh = fopen($attachment['path'], 'rb')) {
|
|
|
|
|
$result = stream_copy_to_stream($fh, $fp, $size ? $size : -1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
$data = $attachment['data'];
|
|
|
|
|
if (!$data && $attachment['path']) {
|
|
|
|
|
$data = file_get_contents($attachment['path']);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ($fp == -1) {
|
|
|
|
|
echo $size ? substr($data, 0, $size) : $data;
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
$result = $size ? substr($data, 0, $size) : $data;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return $result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Save the body to a file
|
|
|
|
|
*
|
|
|
|
|
* @param string $filename File name with path
|
|
|
|
|
*
|
|
|
|
|
* @return bool True on success, False on failure
|
|
|
|
|
*/
|
|
|
|
|
public function body_to_file($filename)
|
|
|
|
|
{
|
|
|
|
|
if ($filename && $this->size && ($fp = fopen($filename, 'w'))) {
|
|
|
|
|
$this->body(0, $fp);
|
|
|
|
|
$this->body_file = $filename;
|
|
|
|
|
fclose($fp);
|
|
|
|
|
@chmod(filename, 0600);
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Output attachment body with content filtering
|
|
|
|
|
*/
|
|
|
|
|
public function output($mimetype)
|
|
|
|
|
{
|
|
|
|
|
if (!$this->size) {
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
$secure = stripos($mimetype, 'image/') === false || $this->download;
|
|
|
|
|
|
|
|
|
|
// Remove <script> in SVG images
|
|
|
|
|
if (!$secure && stripos($mimetype, 'image/svg') === 0) {
|
|
|
|
|
if (!$this->body) {
|
|
|
|
|
$this->body = $this->body();
|
|
|
|
|
if (empty($this->body)) {
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
echo self::svg_filter($this->body);
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ($this->body !== null && !$this->download) {
|
|
|
|
|
header("Content-Length: " . strlen($this->body));
|
|
|
|
|
echo $this->body;
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Don't be tempted to set Content-Length to $part->d_parameters['size'] (#1490482)
|
|
|
|
|
// RFC2183 says "The size parameter indicates an approximate size"
|
|
|
|
|
|
|
|
|
|
return $this->body(0, -1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Returns formatted HTML if the attachment is HTML
|
|
|
|
|
*/
|
|
|
|
|
public function html()
|
|
|
|
|
{
|
|
|
|
|
list($type, $subtype) = explode($this->mimetype, '/');
|
|
|
|
|
$part = (object) array(
|
|
|
|
|
'charset' => $this->charset,
|
|
|
|
|
'ctype_secondary' => $subtype,
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
// get part body if not available
|
|
|
|
|
// fix formatting and charset
|
|
|
|
|
$body = rcube_message::format_part_body($this->body(), $part);
|
|
|
|
|
|
|
|
|
|
// show images?
|
|
|
|
|
$is_safe = $this->is_safe();
|
|
|
|
|
|
|
|
|
|
return rcmail_wash_html($body, array('safe' => $is_safe, 'inline_html' => false));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Remove <script> in SVG images
|
|
|
|
|
*/
|
|
|
|
|
public static function svg_filter($body)
|
|
|
|
|
{
|
|
|
|
|
// clean SVG with washtml
|
|
|
|
|
$wash_opts = array(
|
|
|
|
|
'show_washed' => false,
|
|
|
|
|
'allow_remote' => false,
|
|
|
|
|
'charset' => RCUBE_CHARSET,
|
|
|
|
|
'html_elements' => array('title'),
|
|
|
|
|
// 'blocked_src' => 'program/resources/blocked.gif',
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
// initialize HTML washer
|
|
|
|
|
$washer = new rcube_washtml($wash_opts);
|
|
|
|
|
|
|
|
|
|
// allow CSS styles, will be sanitized by rcmail_washtml_callback()
|
|
|
|
|
$washer->add_callback('style', 'rcmail_washtml_callback');
|
|
|
|
|
|
|
|
|
|
return $washer->wash($body);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Handles nicely storage connection errors
|
|
|
|
|
*/
|
|
|
|
|
public static function check_storage_status()
|
|
|
|
|
{
|
|
|
|
|
$error = rcmail::get_instance()->storage->get_error_code();
|
|
|
|
|
|
|
|
|
|
// Check if we have a connection error
|
|
|
|
|
if ($error == rcube_imap_generic::ERROR_BAD) {
|
|
|
|
|
ob_end_clean();
|
|
|
|
|
|
|
|
|
|
// Get action is often executed simultaneously.
|
|
|
|
|
// Some servers have MAXPERIP or other limits.
|
|
|
|
|
// To workaround this we'll wait for some time
|
|
|
|
|
// and try again (once).
|
|
|
|
|
// Note: Random sleep interval is used to minimize concurency
|
|
|
|
|
// in getting message parts
|
|
|
|
|
|
|
|
|
|
if (!isset($_GET['_redirected'])) {
|
|
|
|
|
usleep(rand(10,30)*100000); // 1-3 sec.
|
|
|
|
|
header('Location: ' . $_SERVER['REQUEST_URI'] . '&_redirected=1');
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
rcube::raise_error(array(
|
|
|
|
|
'code' => 500, 'file' => __FILE__, 'line' => __LINE__,
|
|
|
|
|
'message' => 'Unable to get/display message part. IMAP connection error'),
|
|
|
|
|
true, true);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Don't kill session, just quit (#1486995)
|
|
|
|
|
exit;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public function is_safe()
|
|
|
|
|
{
|
|
|
|
|
if ($this->message) {
|
|
|
|
|
return rcmail_check_safe($this->message);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return !empty($_GET['_safe']);
|
|
|
|
|
}
|
|
|
|
|
}
|
