added syslog logger

CMakeLists.txt

@@ -60,6 +60,7 @@ add_library(webfused-static STATIC
 	src/webfused/auth/file_authenticator.c
 	src/webfused/log/logger.c
 	src/webfused/log/stderr_logger.c
+	src/webfused/log/syslog_logger.c
 )
 
 add_executable(webfused

src/webfused/daemon.c

@@ -13,8 +13,9 @@
 #include <webfuse_adapter.h>
 #include "webfused/config/config.h"
 #include "webfused/config/factory.h"
-#include "webfused/log/stderr_logger.h"
 #include "webfused/log/log.h"
+#include "webfused/log/logger.h"
+#include "webfused/log/stderr_logger.h"
 
 #define WFD_SERVICE_TIMEOUT (1 * 1000)
 #define WFD_DEFAULT_CONFIG_FILE ("/etc/webfuse.conf")
@@ -141,6 +142,7 @@ int wfd_daemon_run(int argc, char * argv[])
 		show_help();
 	}
 
+	wfd_logger_close();
 	free(args.config_file);
 	return result;
 }

src/webfused/log/syslog_logger.c

@@ -0,0 +1,56 @@
+#include "webfused/log/syslog_logger.h"
+#include "webfused/log/logger.h"
+#include "webfused/log/log.h"
+
+#include <syslog.h>
+#include <stddef.h>
+
+static int
+wfd_syslog_logger_to_priority(
+    int level)
+{
+    switch (level)
+    {
+        case WFD_LOGLEVEL_FATAL: return LOG_CRIT;
+        case WFD_LOGLEVEL_ERROR: return LOG_ERR;
+        case WFD_LOGLEVEL_WARN: return LOG_WARNING;
+        case WFD_LOGLEVEL_INFO: return LOG_INFO;
+        case WFD_LOGLEVEL_DEBUG: return LOG_DEBUG;
+        default: return LOG_NOTICE;
+    }
+}
+
+static void 
+wfd_syslog_logger_log(
+    void * user_data,
+    int level,
+    char const * format,
+    va_list args)
+{
+    (void) user_data;
+
+    int prio = wfd_syslog_logger_to_priority(level);
+    vsyslog(prio, format, args);
+}
+
+static void
+wfd_syslog_logger_close(
+    void * user_data)
+{
+    closelog();
+}
+
+void
+wfd_syslog_logger_init(
+    int level,
+    char const * ident,
+    int options,
+    int facility)
+{
+    wfd_logger_init(level, 
+        &wfd_syslog_logger_log, 
+        &wfd_syslog_logger_close, 
+        NULL);
+
+    openlog(ident, options, facility);
+}

src/webfused/log/syslog_logger.h

@@ -0,0 +1,20 @@
+#ifndef WFD_LOG_SYSLOG_LOGGER_H
+#define WFD_LOG_SYSLOG_LOGGER_H
+
+#ifdef __cplusplus
+extern "C"
+ {
+#endif
+
+extern void
+wfd_syslog_logger_init(
+    int level,
+    char const * ident,
+    int options,
+    int facility);
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif