charon: Add custom logger to daemon

This logger can be used to easily register custom logging instances using __attribute__((constructor)) benefiting from the global reload mechanism (with reset of log levels). Note that this is not intended to be used from plugins, which are loaded after loggers have already been initialized. Signed-off-by: Thomas Egerer <[email protected]>
2016-03-01 11:48:52 +01:00
parent fedb16236c
commit 2080c7e1e2
4 changed files with 336 additions and 43 deletions
@@ -16,6 +16,29 @@
 * for more details.
 */

+/*
+ * Copyright (C) 2016 secunet Security Networks AG
+ * Copyright (C) 2016 Thomas Egerer
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
 /**
 * @defgroup libcharon libcharon
 *
@@ -161,6 +184,7 @@ typedef struct daemon_t daemon_t;
 #include <network/socket_manager.h>
 #include <control/controller.h>
 #include <bus/bus.h>
+#include <bus/listeners/custom_logger.h>
 #include <sa/ike_sa_manager.h>
 #include <sa/child_sa_manager.h>
 #include <sa/trap_manager.h>
@@ -311,8 +335,8 @@ struct daemon_t {
 						 bool to_stderr);

 	/**
-	 * Set the log level for the given log group for all configured file- and
-	 * syslog-loggers.
+	 * Set the log level for the given log group for all configured file-,
+	 * syslog and custom-loggers.
 	 *
 	 * @param group		log group
 	 * @param level		log level
@@ -345,4 +369,15 @@ bool libcharon_init();
 */
 void libcharon_deinit();

+/**
+ * Register a custom logger constructor.
+ *
+ * To be called from __attribute__((constructor)) functions.
+ *
+ * @param name				name of the logger (also used for loglevel config)
+ * @param constructor		constructor to create custom logger
+ */
+void register_custom_logger(char *name,
+							custom_logger_constructor_t constructor);
+
 #endif /** DAEMON_H_ @}*/