feat(log): use syslog logging

include/utils/debug.h

@@ -31,4 +31,9 @@
 #define CWS_LOG_WARNING(msg, ...) fprintf(stdout, _WARNING " " msg "\n", ##__VA_ARGS__)
 #define CWS_LOG_INFO(msg, ...) fprintf(stdout, _INFO " " msg "\n", ##__VA_ARGS__)
 
+void cws_log_init(void);
+void cws_log_info(const char *fmt, ...);
+void cws_log_error(const char *fmt, ...);
+void cws_log_shutdown(void);
+
 #endif

src/main.c

@@ -14,13 +14,18 @@ void cws_signal_handler(int) {
 }
 
 int main(void) {
+	cws_log_info("Running cws...");
+
 	if (signal(SIGINT, cws_signal_handler) == SIG_ERR) {
+		cws_log_error("signal()");
 		CWS_LOG_ERROR("signal()");
+
 		return EXIT_FAILURE;
 	}
 
 	cws_config_s *config = cws_config_init();
 	if (!config) {
+		cws_log_error("Unable to read config file");
 		CWS_LOG_ERROR("Unable to read config file");
 
 		return EXIT_FAILURE;
@@ -42,12 +47,17 @@ int main(void) {
 
 	ret = cws_server_setup(&server, config);
 	if (ret != CWS_OK) {
+		cws_log_error("Unable to setup web server: %s", cws_error_str(ret));
 		CWS_LOG_ERROR("Unable to setup web server: %s", cws_error_str(ret));
+		cws_config_free(config);
+
+		return EXIT_FAILURE;
 	}
 
 	CWS_LOG_INFO("Running cws on http://%s:%s...", config->hostname, config->port);
 	ret = cws_server_start(&server);
 	if (ret != CWS_OK) {
+		cws_log_error("Unable to start web server: %s", cws_error_str(ret));
 		CWS_LOG_ERROR("Unable to start web server: %s", cws_error_str(ret));
 	}
 

src/meson.build

@@ -7,6 +7,7 @@ server += files(
 )
 server += files('config/config.c')
 server += files(
+  'utils/debug.c',
   'utils/error.c',
   'utils/hash.c',
   'utils/net.c',

src/utils/debug.c

@@ -0,0 +1,29 @@
+#include "utils/debug.h"
+#include <stdarg.h>
+#include <syslog.h>
+
+void cws_log_init(void) {
+	openlog("cws", LOG_PID | LOG_CONS, LOG_DAEMON);
+}
+
+void cws_log_info(const char *fmt, ...) {
+	va_list args;
+	va_start(args, fmt);
+
+	syslog(LOG_INFO, fmt, args);
+
+	va_end(args);
+}
+
+void cws_log_error(const char *fmt, ...) {
+	va_list args;
+	va_start(args, fmt);
+
+	syslog(LOG_ERR, fmt, args);
+
+	va_end(args);
+}
+
+void cws_log_shutdown(void) {
+	closelog();
+}