GUACAMOLE-805: Handle OpenID Connect "id_token" parameter regardless of location within URL fragment.

extensions/guacamole-auth-openid/src/main/resources/transformToken.js

@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/**
+ * Before AngularJS routing takes effect, test whether the URL fragment
+ * contains an OpenID Connect "id_token" parameter, and reformat the fragment
+ * such that the client side of Guacamole's authentication system will
+ * automatically forward the "id_token" value for server-side validation.
+ * 
+ * Note that not all OpenID identity providers will include the "id_token"
+ * parameter in the first position; it may occur after several other parameters
+ * within the hash.
+ */
+(function guacOpenIDTransformToken() {
+
+    // Transform "/#id_token=..." to "/#/?id_token=..."
+    if (/(^#|&)id_token=/.test(location.hash))
+        location.hash = '/?' + location.hash.substring(1);
+
+})();