From d9f180adf9e1e8a63ea9bfdb534dc376a4829fee Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Sat, 29 Dec 2012 10:54:41 -0500
Subject: [PATCH] Minor IE7/8 fixes
---
program/steps/mail/get.inc | 298 +++++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 269 insertions(+), 29 deletions(-)
diff --git a/program/steps/mail/get.inc b/program/steps/mail/get.inc
index 9ebdf43..9d9032b 100644
--- a/program/steps/mail/get.inc
+++ b/program/steps/mail/get.inc
@@ -4,9 +4,12 @@
+-----------------------------------------------------------------------+
| program/steps/mail/get.inc |
| |
- | This file is part of the RoundCube Webmail client |
- | Copyright (C) 2005-2009, RoundCube Dev. - Switzerland |
- | Licensed under the GNU GPL |
+ | This file is part of the Roundcube Webmail client |
+ | Copyright (C) 2005-2011, The Roundcube Dev Team |
+ | |
+ | Licensed under the GNU General Public License version 3 or |
+ | any later version with exceptions for skins & plugins. |
+ | See the README file for a full license statement. |
| |
| PURPOSE: |
| Delivering a specific part of a mail message |
@@ -14,15 +17,12 @@
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
-
- $Id$
-
*/
// show loading page
if (!empty($_GET['_preload'])) {
- $url = str_replace('&_preload=1', '', $_SERVER['REQUEST_URI']);
+ $url = preg_replace('/([&?]+)_preload=/', '\\1_embed=', $_SERVER['REQUEST_URI']);
$message = rcube_label('loadingdata');
header('Content-Type: text/html; charset=' . RCMAIL_CHARSET);
@@ -41,25 +41,151 @@
$MESSAGE = new rcube_message(get_input_value('_uid', RCUBE_INPUT_GET));
}
-send_nocacheing_headers();
+// check connection status
+check_storage_status();
// show part page
if (!empty($_GET['_frame'])) {
+ if (($part_id = get_input_value('_part', RCUBE_INPUT_GPC)) && ($part = $MESSAGE->mime_parts[$part_id])) {
+ $OUTPUT->set_pagetitle(rcmail_attachment_name($part));
+ }
+
$OUTPUT->send('messagepart');
exit;
}
-else if ($pid = get_input_value('_part', RCUBE_INPUT_GET)) {
+// render thumbnail of an image attachment
+else if ($_GET['_thumb']) {
+ $pid = get_input_value('_part', RCUBE_INPUT_GET);
+ if ($part = $MESSAGE->mime_parts[$pid]) {
+ $thumbnail_size = $RCMAIL->config->get('image_thumbnail_size', 240);
+ $temp_dir = $RCMAIL->config->get('temp_dir');
+ list(,$ext) = explode('/', $part->mimetype);
+ $cache_basename = $temp_dir . '/' . md5($MESSAGE->headers->messageID . $part->mime_id . ':' . $RCMAIL->user->ID . ':' . $thumbnail_size);
+ $cache_file = $cache_basename . '.' . $ext;
+ $mimetype = $part->mimetype;
+
+ // render thumbnail image if not done yet
+ if (!is_file($cache_file)) {
+ $fp = fopen(($orig_name = $cache_basename . '.orig.' . $ext), 'w');
+ $MESSAGE->get_part_content($part->mime_id, $fp);
+ fclose($fp);
+
+ $image = new rcube_image($orig_name);
+ if ($imgtype = $image->resize($RCMAIL->config->get('image_thumbnail_size', 240), $cache_file, true)) {
+ $mimetype = 'image/' . $imgtype;
+ unlink($orig_name);
+ }
+ else {
+ rename($orig_name, $cache_file);
+ }
+ }
+
+ if (is_file($cache_file)) {
+ header('Content-Type: ' . $mimetype);
+ readfile($cache_file);
+ }
+ }
+
+ exit;
+}
+
+else if (strlen($pid = get_input_value('_part', RCUBE_INPUT_GET))) {
if ($part = $MESSAGE->mime_parts[$pid]) {
$ctype_primary = strtolower($part->ctype_primary);
$ctype_secondary = strtolower($part->ctype_secondary);
$mimetype = sprintf('%s/%s', $ctype_primary, $ctype_secondary);
-
- $browser = new rcube_browser;
+
+ // allow post-processing of the message body
+ $plugin = $RCMAIL->plugins->exec_hook('message_part_get',
+ array('uid' => $MESSAGE->uid, 'id' => $part->mime_id, 'mimetype' => $mimetype, 'part' => $part, 'download' => !empty($_GET['_download'])));
+
+ if ($plugin['abort'])
+ exit;
+
+ // overwrite modified vars from plugin
+ $mimetype = $plugin['mimetype'];
+ $extensions = rcube_mime::get_mime_extensions($mimetype);
+
+ if ($plugin['body'])
+ $part->body = $plugin['body'];
+
+
+ // compare file mimetype with the stated content-type headers and file extension to avoid malicious operations
+ if (!empty($_REQUEST['_embed']) && empty($_REQUEST['_nocheck'])) {
+ $file_extension = strtolower(pathinfo($part->filename, PATHINFO_EXTENSION));
+
+ // 1. compare filename suffix with expected suffix derived from mimetype
+ $valid = $file_extension && in_array($file_extension, (array)$extensions);
+
+ // 2. detect the real mimetype of the attachment part and compare it with the stated mimetype and filename extension
+ if ($valid || !$file_extension || $mimetype == 'application/octet-stream') {
+ if ($part->body) // part body is already loaded
+ $body = $part->body;
+ else if ($part->size && $part->size < 1024*1024) // load the entire part if it's small enough
+ $body = $part->body = $MESSAGE->get_part_content($part->mime_id);
+ else // fetch the first 2K of the message part
+ $body = $MESSAGE->get_part_content($part->mime_id, null, true, 2048);
+
+ // detect message part mimetype
+ $real_mimetype = rcube_mime::file_content_type($body, $part->filename, $mimetype, true, true);
+ list($real_ctype_primary, $real_ctype_secondary) = explode('/', $real_mimetype);
+
+ // ignore differences in text/* mimetypes. Filetype detection isn't very reliable here
+ if ($real_ctype_primary == 'text' && strpos($mimetype, $real_ctype_primary) === 0)
+ $real_mimetype = $mimetype;
+
+ // get valid file extensions
+ $extensions = rcube_mime::get_mime_extensions($real_mimetype);
+ $valid_extension = (!$file_extension || in_array($file_extension, (array)$extensions));
+
+ // fix mimetype for images wrongly declared as octet-stream
+ if ($mimetype == 'application/octet-stream' && strpos($real_mimetype, 'image/') === 0 && $valid_extension)
+ $mimetype = $real_mimetype;
+
+ $valid = ($real_mimetype == $mimetype && $valid_extension);
+ }
+ else {
+ $real_mimetype = $mimetype;
+ }
+
+ // show warning if validity checks failed
+ if (!$valid) {
+ $OUTPUT = new rcmail_html_page();
+ $OUTPUT->write(html::tag('html', null, html::tag('body', array('style' => 'font-family:sans-serif; margin:1em'),
+ html::div(array('class' => 'warning', 'style' => 'border:2px solid #ffdf0e; background:#fef893; padding:1em 1em 0 1em;'),
+ rcube_label(array(
+ 'name' => 'attachmentvalidationerror',
+ 'vars' => array('expected' => "$mimetype (.$file_extension)", 'detected' => "$real_mimetype (.$extensions[0])")
+ )) .
+ html::p('buttons',
+ html::tag('button',
+ array('onclick' => "location.href='" . $RCMAIL->url(array_merge($_GET, array('_nocheck' => 1))) . "'"),
+ rcube_label('showanyway')))
+ )
+ )));
+ exit;
+ }
+ }
+
+
+ // TIFF to JPEG conversion, if needed
+ $tiff_support = !empty($_SESSION['browser_caps']) && !empty($_SESSION['browser_caps']['tif']);
+ if (!empty($_REQUEST['_embed']) && !$tiff_support
+ && $RCMAIL->config->get('im_convert_path')
+ && rcmail_part_image_type($part) == 'image/tiff'
+ ) {
+ $tiff2jpeg = true;
+ $mimetype = 'image/jpeg';
+ }
+
+
+ $browser = $RCMAIL->output->browser;
+ list($ctype_primary, $ctype_secondary) = explode('/', $mimetype);
// send download headers
- if ($_GET['_download']) {
+ if ($plugin['download']) {
header("Content-Type: application/octet-stream");
if ($browser->ie)
header("Content-Type: application/force-download");
@@ -68,41 +194,124 @@
header("Content-Type: text/$ctype_secondary; charset=" . ($part->charset ? $part->charset : RCMAIL_CHARSET));
}
else {
+ $mimetype = rcmail_fix_mimetype($mimetype);
header("Content-Type: $mimetype");
header("Content-Transfer-Encoding: binary");
}
+
// deliver part content
- if ($ctype_primary == 'text' && $ctype_secondary == 'html' && empty($_GET['_download'])) {
- // get part body if not available
- if (!$part->body)
- $part->body = $MESSAGE->get_part_content($part->mime_id);
+ if ($ctype_primary == 'text' && $ctype_secondary == 'html' && empty($plugin['download'])) {
+ // Check if we have enough memory to handle the message in it
+ // #1487424: we need up to 10x more memory than the body
+ if (!rcmail_mem_check($part->size * 10)) {
+ $out = '<body>' . rcube_label('messagetoobig'). ' '
+ . html::a('?_task=mail&_action=get&_download=1&_uid='.$MESSAGE->uid.'&_part='.$part->mime_id
+ .'&_mbox='. urlencode($RCMAIL->storage->get_folder()), rcube_label('download')) . '</body></html>';
+ }
+ else {
+ // get part body if not available
+ if (!$part->body)
+ $part->body = $MESSAGE->get_part_content($part->mime_id);
+
+ $out = rcmail_print_body($part, array('safe' => $MESSAGE->is_safe, 'inline_html' => false));
+ }
+
+ // check connection status
+ if ($part->size && empty($part->body)) {
+ check_storage_status();
+ }
$OUTPUT = new rcube_html_page();
- $OUTPUT->write(rcmail_print_body($part, array('safe' => $MESSAGE->is_safe, 'inline_html' => false)));
+ $OUTPUT->write($out);
}
else {
// don't kill the connection if download takes more than 30 sec.
@set_time_limit(0);
-
- $filename = $part->filename ? $part->filename : ($MESSAGE->subject ? $MESSAGE->subject : 'roundcube') . '.'.$ctype_secondary;
-
+
+ $filename = rcmail_attachment_name($part);
+
if ($browser->ie && $browser->ver < 7)
$filename = rawurlencode(abbreviate_string($filename, 55));
else if ($browser->ie)
$filename = rawurlencode($filename);
else
$filename = addcslashes($filename, '"');
-
- $disposition = !empty($_GET['_download']) ? 'attachment' : 'inline';
-
+
+ $disposition = !empty($plugin['download']) ? 'attachment' : 'inline';
+
+ // Workaround for nasty IE bug (#1488844)
+ // If Content-Disposition header contains string "attachment" e.g. in filename
+ // IE handles data as attachment not inline
+ if ($disposition == 'inline' && $browser->ie && $browser->ver < 9) {
+ $filename = str_ireplace('attachment', 'attach', $filename);
+ }
+
+ // add filename extension if missing
+ if (!pathinfo($filename, PATHINFO_EXTENSION) && ($extensions = rcube_mime::get_mime_extensions($mimetype))) {
+ $filename .= '.' . $extensions[0];
+ }
+
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, $part, true);
+
+ // handle tiff to jpeg conversion
+ if (!empty($tiff2jpeg)) {
+ $temp_dir = unslashify($RCMAIL->config->get('temp_dir'));
+ $file_path = tempnam($temp_dir, 'rcmAttmnt');
+
+ // write content to temp file
+ if ($part->body) {
+ $saved = file_put_contents($file_path, $part->body);
+ }
+ else if ($part->size) {
+ $fd = fopen($file_path, 'w');
+ $saved = $RCMAIL->storage->get_message_part($MESSAGE->uid, $part->mime_id, $part, false, $fd);
+ fclose($fd);
+ }
+
+ // convert image to jpeg and send it to the browser
+ if ($saved) {
+ $image = new rcube_image($file_path);
+ if ($image->convert(rcube_image::TYPE_JPG, $file_path)) {
+ header("Content-Length: " . filesize($file_path));
+ readfile($file_path);
+ }
+ unlink($file_path);
+ }
+ }
+ // do content filtering to avoid XSS through fake images
+ else if (!empty($_REQUEST['_embed']) && $browser->ie && $browser->ver <= 8) {
+ if ($part->body) {
+ echo preg_match('/<(script|iframe|object)/i', $part->body) ? '' : $part->body;
+ $sent = true;
+ }
+ else if ($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');
+ $sent = $RCMAIL->storage->get_message_part($MESSAGE->uid, $part->mime_id, $part, false, $stdout);
+ }
+ }
+ // send part as-it-is
+ else {
+ if ($part->body) {
+ header("Content-Length: " . strlen($part->body));
+ echo $part->body;
+ $sent = true;
+ }
+ else if ($part->size) {
+ if ($size = (int)$part->d_parameters['size']) {
+ header("Content-Length: $size");
+ }
+
+ $sent = $RCMAIL->storage->get_message_part($MESSAGE->uid, $part->mime_id, $part, true);
+ }
+ }
+
+ // check connection status
+ if ($part->size && !$sent) {
+ check_storage_status();
+ }
}
exit;
@@ -130,3 +339,34 @@
exit;
+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 simultanously.
+ // 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 {
+ raise_error(array(
+ 'code' => 500, 'type' => 'php',
+ 'file' => __FILE__, 'line' => __LINE__,
+ 'message' => 'Unable to get/display message part. IMAP connection error'),
+ true, true);
+ }
+
+ // Don't kill session, just quit (#1486995)
+ exit;
+ }
+}
--
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