*
* Prints the page header (duh)
*
- * @copyright 1999-2010 The SquirrelMail Project Team
+ * @copyright 1999-2020 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id$
* @package squirrelmail
* @param string xtra extra HTML to insert into the header
* @param bool do_hook whether to execute hooks, default true
* @param bool frames generate html frameset doctype (since 1.5.1)
+ * @param bool $browser_cache_ok When TRUE, it's OK to leave out the
+ * no-cache browser headers (OPTIONAL;
+ * default = FALSE, send no-cache headers)
* @return void
*/
-function displayHtmlHeader( $title = 'SquirrelMail', $xtra = '', $do_hook = TRUE, $frames = FALSE ) {
+function displayHtmlHeader( $title = 'SquirrelMail', $xtra = '', $do_hook = TRUE, $frames = FALSE, $browser_cache_ok=FALSE ) {
global $squirrelmail_language, $sTemplateID, $oErrorHandler, $oTemplate;
if ( !sqgetGlobalVar('base_uri', $base_uri, SQ_SESSION) ) {
}
global $custom_css, $pageheader_sent, $theme, $theme_default, $text_direction,
$default_fontset, $chosen_fontset, $default_fontsize, $chosen_fontsize,
- $chosen_theme, $chosen_theme_path, $user_themes, $user_theme_default;
+ $chosen_theme, $chosen_theme_path, $user_themes, $user_theme_default,
+ $head_tag_extra;
- /* add no cache headers here */
+ // add no cache headers here
+ //
+ if (!$browser_cache_ok) {
//FIXME: should change all header() calls in SM core to use $oTemplate->header()!!
- $oTemplate->header('Pragma: no-cache'); // http 1.0 (rfc1945)
- $oTemplate->header('Cache-Control: private, no-cache, no-store'); // http 1.1 (rfc2616)
+ $oTemplate->header('Pragma: no-cache'); // http 1.0 (rfc1945)
+ $oTemplate->header('Cache-Control: private, no-cache, no-store, must-revalidate, max-age=0'); // http 1.1 (rfc2616)
+ $oTemplate->header('Expires: Sat, 1 Jan 2000 00:00:00 GMT');
+//TODO: is this needed? $oTemplate->header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . 'GMT');
+ }
+ /* prevent information leakage about read emails by forbidding Firefox
+ * to do preemptive DNS requests for any links in the message body. */
+ $oTemplate->header('X-DNS-Prefetch-Control: off');
// don't show version as a security measure
//$oTemplate->header('X-Powered-By: SquirrelMail/' . SM_VERSION, FALSE);
$oTemplate->header('X-Powered-By: SquirrelMail', FALSE);
+ // prevent clickjack attempts
+// FIXME: should we use DENY instead? We can also make this a configurable value, including giving the admin the option of removing this entirely in case they WANT to be framed by an external domain
+ $oTemplate->header('X-Frame-Options: SAMEORIGIN');
+
+ // prevent clickjack attempts using JavaScript for browsers that
+ // don't support the X-Frame-Options header...
+ // we check to see if we are *not* the top page, and if not, check
+ // whether or not the top page is in the same domain as we are...
+ // if not, log out immediately -- this is an attempt to do the same
+ // thing that the X-Frame-Options does using JavaScript (never a good
+ // idea to rely on JavaScript-based solutions, though)
+//FIXME: is it a problem that we still force the clickjack protection code whether or not JavaScript is supported or desired by the user?
+ $header_tags = '<script type="text/javascript" language="JavaScript">'
+ . "\n<!--\n"
+ . 'if (self != top) { try { if (document.domain != top.document.domain) {'
+ . ' throw "Clickjacking security violation! Please log out immediately!"; /* this code should never execute - exception should already have been thrown since it\'s a security violation in this case to even try to access top.document.domain (but it\'s left here just to be extra safe) */ } } catch (e) { self.location = "'
+ . sqm_baseuri() . 'src/signout.php"; top.location = "'
+ . sqm_baseuri() . 'src/signout.php" } }'
+ . "\n// -->\n</script>\n";
+
$oTemplate->assign('frames', $frames);
$oTemplate->assign('lang', $squirrelmail_language);
- $header_tags = '';
+ $header_tags .= "<meta name=\"robots\" content=\"noindex,nofollow\" />\n"
- $header_tags .= "<meta name=\"robots\" content=\"noindex,nofollow\" />\n";
+ // For adding a favicon or anything else that should be inserted in *ALL* <head> for *ALL* documents,
+ // define $head_tag_extra in config/config_local.php
+ // The string "###SM BASEURI###" will be replaced with the base URI for this SquirrelMail installation.
+ // When not defined, a default is provided that displays the default favicon.ico.
+ // If you override this and still want to use the default favicon.ico, you'll have to include the following
+ // following in your $head_tag_extra string:
+ // $head_tag_extra = '<link rel="shortcut icon" href="###SM BASEURI###favicon.ico" />...<YOUR CONTENT HERE>...';
+ //
+ . (empty($head_tag_extra) ? '<link rel="shortcut icon" href="' . sqm_baseuri() . 'favicon.ico" />'
+ : str_replace('###SM BASEURI###', sqm_baseuri(), $head_tag_extra));
$used_fontset = (!empty($chosen_fontset) ? $chosen_fontset : $default_fontset);
$used_fontsize = (!empty($chosen_fontsize) ? $chosen_fontsize : $default_fontsize);
* this explains the imap_mailbox.php dependency. We should instead store
* the selected mailbox in the session and fallback to the session var.
*/
- $shortBoxName = htmlspecialchars(imap_utf7_decode_local(
+ $shortBoxName = sm_encode_html_special_chars(imap_utf7_decode_local(
readShortMailboxName($mailbox, $delimiter)));
if (getPref($data_dir, $username, 'translate_special_folders')) {
global $sent_folder, $trash_folder, $draft_folder;
projects / squirrelmail.git / blobdiff