GUACAMOLE-96: Add skeleton TOTP authentication extension (hard-coded, fake TOTP).

extensions/guacamole-auth-totp/src/main/resources/guac-manifest.json

@@ -0,0 +1,16 @@
+{
+
+    "guacamoleVersion" : "0.9.14",
+
+    "name"      : "TOTP TFA Authentication Backend",
+    "namespace" : "totp",
+
+    "authProviders" : [
+        "org.apache.guacamole.auth.totp.TOTPAuthenticationProvider"
+    ],
+
+    "translations" : [
+        "translations/en.json"
+    ]
+
+}

extensions/guacamole-auth-totp/src/main/resources/license.txt

@@ -0,0 +1,18 @@
+/*
+ * 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.
+ */

extensions/guacamole-auth-totp/src/main/resources/translations/en.json

@@ -0,0 +1,13 @@
+{
+
+    "DATA_SOURCE_TOTP" : {
+        "NAME" : "TOTP TFA Backend"
+    },
+
+    "LOGIN" : {
+        "FIELD_HEADER_GUAC_TOTP"        : "Authentication Code",
+        "INFO_TOTP_REQUIRED"            : "Please enter your authentication code to verify your identity.",
+        "INFO_TOTP_VERIFICATION_FAILED" : "Verification failed. Please try again."
+    }
+
+}