Split daemon's logging backends in separate modules

1 files changed, 79 insertions, 0 deletions

diff --git a/other/bootstrap_daemon/src/log_backend_syslog.c b/other/bootstrap_daemon/src/log_backend_syslog.c
new file mode 100644
index 00000000..88911a21
--- /dev/null
+++ b/other/bootstrap_daemon/src/log_backend_syslog.c
@@ -0,0 +1,79 @@
+/*
+ * Tox DHT bootstrap daemon.
+ * Syslog logging backend.
+ */
+
+/*
+ * Copyright © 2016-2017 The TokTok team.
+ * Copyright © 2015-2016 Tox project.
+ *
+ * This file is part of Tox, the free peer to peer instant messenger.
+ *
+ * Tox is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Tox is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Tox.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "log_backend_syslog.h"
+
+#include "global.h"
+
+#include "../../../toxcore/ccompat.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <syslog.h>
+
+void log_backend_syslog_open(void)
+{
+    openlog(DAEMON_NAME, LOG_NOWAIT | LOG_PID, LOG_DAEMON);
+}
+
+void log_backend_syslog_close(void)
+{
+    closelog();
+}
+
+static int log_backend_syslog_level(LOG_LEVEL level)
+{
+    switch (level) {
+        case LOG_LEVEL_INFO:
+            return LOG_INFO;
+
+        case LOG_LEVEL_WARNING:
+            return LOG_WARNING;
+
+        case LOG_LEVEL_ERROR:
+            return LOG_ERR;
+    }
+
+    return LOG_INFO;
+}
+
+void log_backend_syslog_write(LOG_LEVEL level, const char *format, va_list args)
+{
+    va_list args2;
+
+    va_copy(args2, args);
+    int size = vsnprintf(NULL, 0, format, args2);
+    va_end(args2);
+
+    assert(size >= 0);
+
+    if (size < 0) {
+        return;
+    }
+
+    VLA(char, buf, size + 1);
+    vsnprintf(buf, size + 1, format, args);
+
+    syslog(log_backend_syslog_level(level), "%s", buf);
+}