| | |
| | | |
| | | // show loading page |
| | | if (!empty($_GET['_preload'])) { |
| | | $url = str_replace('&_preload=1', '', $_SERVER['REQUEST_URI']); |
| | | $url = preg_replace('/[&?]+_preload=1/', '', $_SERVER['REQUEST_URI']); |
| | | $message = rcube_label('loadingdata'); |
| | | |
| | | header('Content-Type: text/html; charset=' . RCMAIL_CHARSET); |
| | |
| | | $MESSAGE = new rcube_message(get_input_value('_uid', RCUBE_INPUT_GET)); |
| | | } |
| | | |
| | | send_nocacheing_headers(); |
| | | |
| | | // show part page |
| | | if (!empty($_GET['_frame'])) { |
| | | $OUTPUT->send('messagepart'); |
| | |
| | | $ctype_secondary = strtolower($part->ctype_secondary); |
| | | $mimetype = sprintf('%s/%s', $ctype_primary, $ctype_secondary); |
| | | |
| | | // allow post-processing of the message body |
| | | $plugin = $RCMAIL->plugins->exec_hook('message_part_get', |
| | | array('id' => $part->mime_id, 'mimetype' => $mimetype, 'part' => $part, 'download' => !empty($_GET['_download']))); |
| | | |
| | | if ($plugin['abort']) |
| | | exit; |
| | | |
| | | // overwrite modified vars from plugin |
| | | $mimetype = $plugin['mimetype']; |
| | | list($ctype_primary, $ctype_secondary) = explode('/', $mimetype); |
| | | if ($plugin['body']) |
| | | $part->body = $plugin['body']; |
| | | |
| | | $browser = $RCMAIL->output->browser; |
| | | |
| | | // send download headers |
| | | if ($_GET['_download']) { |
| | | if ($plugin['download']) { |
| | | header("Content-Type: application/octet-stream"); |
| | | if ($browser->ie) |
| | | header("Content-Type: application/force-download"); |
| | |
| | | } |
| | | |
| | | // deliver part content |
| | | if ($ctype_primary == 'text' && $ctype_secondary == 'html' && empty($_GET['_download'])) { |
| | | if ($ctype_primary == 'text' && $ctype_secondary == 'html' && empty($plugin['download'])) { |
| | | // get part body if not available |
| | | if (!$part->body) |
| | | $part->body = $MESSAGE->get_part_content($part->mime_id); |
| | |
| | | else |
| | | $filename = addcslashes($filename, '"'); |
| | | |
| | | $disposition = !empty($_GET['_download']) ? 'attachment' : 'inline'; |
| | | $disposition = !empty($plugin['download']) ? 'attachment' : 'inline'; |
| | | |
| | | header("Content-Disposition: $disposition; filename=\"$filename\""); |
| | | |
| | | // turn off output buffering and print part content |
| | | if ($part->body) |
| | | echo $part->body; |
| | | else if ($part->size) |
| | | $IMAP->get_message_part($MESSAGE->uid, $part->mime_id, $part, true); |
| | | // do content filtering to avoid XSS through fake images |
| | | if (!empty($_REQUEST['_embed']) && $browser->ie && $browser->ver <= 8) { |
| | | if ($part->body) |
| | | echo preg_match('/<(script|iframe|object)/i', $part->body) ? '' : $part->body; |
| | | else if ($part->size) { |
| | | $stdout = fopen('php://output', 'w'); |
| | | stream_filter_register('rcube_content', 'rcube_content_filter') or die('Failed to register content filter'); |
| | | stream_filter_append($stdout, 'rcube_content'); |
| | | $IMAP->get_message_part($MESSAGE->uid, $part->mime_id, $part, false, $stdout); |
| | | } |
| | | } |
| | | else { |
| | | // turn off output buffering and print part content |
| | | if ($part->body) |
| | | echo $part->body; |
| | | else if ($part->size) |
| | | $IMAP->get_message_part($MESSAGE->uid, $part->mime_id, $part, true); |
| | | } |
| | | } |
| | | |
| | | exit; |
| | |
| | | exit; |
| | | |
| | | |
| | | |
| | | /** |
| | | * PHP stream filter to detect html/javascript code in attachments |
| | | */ |
| | | class rcube_content_filter extends php_user_filter |
| | | { |
| | | private $buffer = ''; |
| | | private $cutoff = 2048; |
| | | |
| | | function onCreate() |
| | | { |
| | | $this->cutoff = rand(2048, 3027); |
| | | return true; |
| | | } |
| | | |
| | | function filter($in, $out, &$consumed, $closing) |
| | | { |
| | | while ($bucket = stream_bucket_make_writeable($in)) { |
| | | $this->buffer .= $bucket->data; |
| | | |
| | | // check for evil content and abort |
| | | if (preg_match('/<(script|iframe|object)/i', $this->buffer)) |
| | | return PSFS_ERR_FATAL; |
| | | |
| | | // keep buffer small enough |
| | | if (strlen($this->buffer) > 4096) |
| | | $this->buffer = substr($this->buffer, $this->cutoff); |
| | | |
| | | $consumed += $bucket->datalen; |
| | | stream_bucket_append($out, $bucket); |
| | | } |
| | | |
| | | return PSFS_PASS_ON; |
| | | } |
| | | } |
| | | |