1 files changed, 47 insertions, 0 deletions
diff --git a/lib/log_msg.c b/lib/log_msg.c
new file mode 100644
index 0000000..cef574e
--- /dev/null
+++ b/lib/log_msg.c
@@ -0,0 +1,47 @@
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <syslog.h>
+#include "log_msg.h"
+
+/*
+** Reports a message to stderr, if in debug mode, else to syslog
+*/
+
+int debug_flag = 0; /* per default no debug messages */
+
+FILE *debug_output = NULL;
+
+void
+log_msg (char *fmt,...)
+{
+  va_list ap;
+
+  if (debug_output == NULL)
+    debug_output = stderr;
+
+  va_start (ap, fmt);
+  if (debug_flag)
+    {
+      vfprintf (debug_output, fmt, ap);
+      fputc ('\n', debug_output);
+      fflush (debug_output);
+    }
+  else
+    {
+#ifdef HAVE_VSYSLOG
+      vsyslog (LOG_NOTICE, fmt, ap);
+#else
+      char msg[512];
+
+      vsnprintf (msg, sizeof (msg), fmt, ap);
+      msg[sizeof (msg) -1] = '\0';
+      syslog (LOG_NOTICE, "%s", msg);
+#endif
+    }
+  va_end (ap);
+}