Mass refactor. Clang-format. Start adding tests. Use FetchContent.

include/j7s-plugin/j7s-plugin.h

@@ -15,19 +15,25 @@
 // Mosquitto authentication plugin that using Authorizer to authorize
 // users using jwts.
 
-extern "C" {
-    #include "mosquitto.h"
-    #include "mosquitto_broker.h"
-    #include "mosquitto_plugin.h"
+extern "C"
+{
+#include "mosquitto.h"
+#include "mosquitto_broker.h"
+#include "mosquitto_plugin.h"
 }
 
 // Stuff we're "exporting" for the dynamic loading.
-extern "C" {
-    int mosquitto_plugin_version(int supported_version_count, const int *supported_versions);
-    int mosquitto_plugin_init(mosquitto_plugin_id_t *identifier, void **userdata, struct mosquitto_opt *options, int option_count);
-    int mosquitto_plugin_cleanup(void *userdata, struct mosquitto_opt *options, int option_count);
+extern "C"
+{
+    int mosquitto_plugin_version(int supported_version_count, const int * supported_versions);
+    int mosquitto_plugin_init(
+        mosquitto_plugin_id_t * identifier,
+        void ** userdata,
+        struct mosquitto_opt * options,
+        int option_count);
+    int mosquitto_plugin_cleanup(void * userdata, struct mosquitto_opt * options, int option_count);
 }
 // My functions
-int j7s_auth_basic_auth_callback(int event, void *event_data, void *userdata);
-int j7s_acl_check_callback(int event, void *event_data, void *userdata);
-int j7s_disconnect_callback(int event, void *event_data, void *userdata);
+int j7s_auth_basic_auth_callback(int event, void * event_data, void * userdata);
+int j7s_acl_check_callback(int event, void * event_data, void * userdata);
+int j7s_disconnect_callback(int event, void * event_data, void * userdata);

include/j7s-plugin/utils.h

@@ -0,0 +1,36 @@
+
+// Copyright 2022 James Pace
+//
+// Licensed 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.
+
+#include <chrono>
+#include <optional>
+#include <string>
+#include <tuple>
+
+std::optional<std::string> read_key(const std::string & key_file);
+
+std::tuple<bool, bool> validate(
+    const std::string & token,
+    const std::string & username,
+    const std::string & issuer,
+    const std::string & pub_key);
+
+std::string gen_token(
+    const std::string & issuer,
+    const std::string & username,
+    const std::string & can_read,
+    const std::string & can_write,
+    const std::string & pub_key,
+    const std::string & priv_key,
+    const std::chrono::time_point<std::chrono::system_clock> & expr_time);