authsource-example: Simple display of received exception.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1581 44740490-163a-0410-bde0-09ae8108e29a

www/example-simple/authsource-example.php

@@ -14,6 +14,21 @@ if(array_key_exists('logout', $_REQUEST)) {
 	SimpleSAML_Auth_Default::initLogout('/' . $config->getBaseURL() . 'logout.php');
 }
 
+if (array_key_exists(SimpleSAML_Auth_State::EXCEPTION_PARAM, $_REQUEST)) {
+	/* This is just a simple example of an error. */
+
+	$state = SimpleSAML_Auth_State::loadExceptionState();
+	assert('array_key_exists(SimpleSAML_Auth_State::EXCEPTION_DATA, $state)');
+	$e = $state[SimpleSAML_Auth_State::EXCEPTION_DATA];
+
+	header('Content-Type: text/plain');
+	echo "Exception during login:\n";
+	foreach ($e->format() as $line) {
+		echo $line . "\n";
+	}
+	exit(0);
+}
+
 if(!array_key_exists('as', $_REQUEST)) {
 	throw new Exception('No authentication source chosen.');
 }
@@ -21,7 +36,7 @@ if(!array_key_exists('as', $_REQUEST)) {
 $as = $_REQUEST['as'];
 
 if (!$session->isValid($as)) {
-	SimpleSAML_Auth_Default::initLogin($as, SimpleSAML_Utilities::selfURL());
+	SimpleSAML_Auth_Default::initLogin($as, SimpleSAML_Utilities::selfURL(), SimpleSAML_Utilities::selfURL());
 }
 
 $attributes = $session->getAttributes();