Auth_Default: Add support for exception handling.

This function makes SimpleSAML_Auth_Default save the errorURL given
to the login functionin the state array. This will make the
SimpleSAML_Auth_State class pass exceptions to this url.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1572 44740490-163a-0410-bde0-09ae8108e29a

lib/SimpleSAML/Auth/Default.php

@@ -53,6 +53,10 @@ class SimpleSAML_Auth_Default {
 			$state[SimpleSAML_Auth_State::RESTART] = $hints[SimpleSAML_Auth_State::RESTART];
 		}
 
+		if ($errorURL !== NULL) {
+			$state[SimpleSAML_Auth_State::EXCEPTION_HANDLER_URL] = $errorURL;
+		}
+
 		$as = SimpleSAML_Auth_Source::getById($authId);
 		if ($as === NULL) {
 			throw new Exception('Invalid authentication source: ' . $authId);