Adding a saml:idp parameter to select IdP for modules/core/www/as_login.php

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2859 44740490-163a-0410-bde0-09ae8108e29a

modules/core/www/as_login.php

@@ -15,9 +15,24 @@ if (!is_string($_REQUEST['AuthId'])) {
 	throw new SimpleSAML_Error_BadRequest('Missing AuthId parameter.');
 }
 
-$as = new SimpleSAML_Auth_Simple($_REQUEST['AuthId']);
-$as->requireAuth(array(
+/*
+ * Setting up the options for the requireAuth() call later..
+ */
+$options = array(
 	'ReturnTo' => $_REQUEST['ReturnTo'],
-));
+);
+
+/*
+ * Allows a saml:idp query string parameter specify the IdP entity ID to be used
+ * as used by the DiscoJuice embedded client.
+ */
+if (!empty($_REQUEST['saml:idp'])) {
+	$options['saml:idp'] = $_REQUEST['saml:idp'];
+}
+
+
+
+$as = new SimpleSAML_Auth_Simple($_REQUEST['AuthId']);
+$as->requireAuth($options);
 
 SimpleSAML_Utilities::redirect($_REQUEST['ReturnTo']);