X-Git-Url: https://git-public.kairo.at/?p=authserver.git;a=blobdiff_plain;f=authutils.php-class;h=e72768a2bd35c883384d47fec68ff7375a8f5544;hp=dc06a7f7547ab17cabfce789fe2c1624de47b477;hb=b217e836543c89d872c8f692e2557c8c43da468f;hpb=ea0452ad570f441f151a8a083e0810c12476a134

diff --git a/authutils.php-class b/authutils.php-class
index dc06a7f..e72768a 100755
--- a/authutils.php-class
+++ b/authutils.php-class
@@ -77,6 +77,7 @@ class AuthUtils {
     // *** constructor ***
     $this->db = $db;
     $this->db->exec("SET time_zone='+00:00';"); // Execute directly on PDO object, set session to UTC to make our gmdate() values match correctly.
+    // For debugging, potentially add |robert\.box\.kairo\.at to that regex temporarily.
     $this->running_on_localhost = preg_match('/^((.+\.)?localhost|127\.0\.0\.\d+)$/', $_SERVER['SERVER_NAME']);
     if (array_key_exists('pwd_cost', $settings)) {
       $this->pwd_cost = $settings['pwd_cost'];
@@ -107,6 +108,26 @@ class AuthUtils {
     return $errors;
   }
 
+  function sendSecurityHeaders() {
+    // Send various headers that we want to have for security resons, mostly as recommended by https://observatory.mozilla.org/
+
+    // CSP - see https://wiki.mozilla.org/Security/Guidelines/Web_Security#Content_Security_Policy
+    // Disable unsafe inline/eval, only allow loading of resources (images, fonts, scripts, etc.) from ourselves; also disable framing.
+    header('Content-Security-Policy: default-src \'none\';img-src \'self\'; script-src \'self\'; style-src \'self\'; frame-ancestors \'none\'');
+
+    // X-Content-Type-Options - see https://wiki.mozilla.org/Security/Guidelines/Web_Security#X-Content-Type-Options
+    // Prevent browsers from incorrectly detecting non-scripts as scripts
+    header('X-Content-Type-Options: nosniff');
+
+    // X-Frame-Options (for older browsers) - see https://wiki.mozilla.org/Security/Guidelines/Web_Security#X-Frame-Options
+    // Block site from being framed
+    header('X-Frame-Options: DENY');
+
+    // X-XSS-Protection (for older browsers) - see https://wiki.mozilla.org/Security/Guidelines/Web_Security#X-XSS-Protection
+    // Block pages from loading when they detect reflected XSS attacks
+    header('X-XSS-Protection: 1; mode=block');
+  }
+
   function initSession() {
     $session = null;
     if (strlen(@$_COOKIE['sessionkey'])) {