Initial support for syslog messaging

code/espurna/config/general.h

@@ -1,4 +1,4 @@
-//------------------------------------------------------------------------------
+// // //------------------------------------------------------------------------------
 // Do not change this file unless you know what you are doing
 // Configuration settings are in the settings.h file
 //------------------------------------------------------------------------------
@@ -75,9 +75,14 @@
 #endif
 
 #ifndef DEBUG_UDP_PORT
-#define DEBUG_UDP_PORT          8113
+#define DEBUG_UDP_PORT          514
 #endif
 
+// If DEBUG_UDP_PORT is set to 514 syslog format is assumed 
+// (https://tools.ietf.org/html/rfc3164)
+// DEBUG_UDP_FAC_PRI is the facility+priority
+#define DEBUG_UDP_FAC_PRI       (SYSLOG_LOCAL0 | SYSLOG_DEBUG)
+
 //------------------------------------------------------------------------------
 
 #ifndef DEBUG_TELNET_SUPPORT

code/espurna/config/types.h

@@ -61,6 +61,42 @@
 #define RELAY_PROVIDER_RFBRIDGE     3
 #define RELAY_PROVIDER_STM          4
 
+//------------------------------------------------------------------------------
+// UDP SYSLOG
+//------------------------------------------------------------------------------
+
+// Priority codes:
+#define SYSLOG_EMERG       0 /* system is unusable */
+#define SYSLOG_ALERT       1 /* action must be taken immediately */
+#define SYSLOG_CRIT        2 /* critical conditions */
+#define SYSLOG_ERR         3 /* error conditions */
+#define SYSLOG_WARNING     4 /* warning conditions */
+#define SYSLOG_NOTICE      5 /* normal but significant condition */
+#define SYSLOG_INFO        6 /* informational */
+#define SYSLOG_DEBUG       7 /* debug-level messages */
+
+// Facility codes:
+#define SYSLOG_KERN        (0<<3)  /* kernel messages */
+#define SYSLOG_USER        (1<<3)  /* random user-level messages */
+#define SYSLOG_MAIL        (2<<3)  /* mail system */
+#define SYSLOG_DAEMON      (3<<3)  /* system daemons */
+#define SYSLOG_AUTH        (4<<3)  /* security/authorization messages */
+#define SYSLOG_SYSLOG      (5<<3)  /* messages generated internally by syslogd */
+#define SYSLOG_LPR         (6<<3)  /* line printer subsystem */
+#define SYSLOG_NEWS        (7<<3)  /* network news subsystem */
+#define SYSLOG_UUCP        (8<<3)  /* UUCP subsystem */
+#define SYSLOG_CRON        (9<<3)  /* clock daemon */
+#define SYSLOG_AUTHPRIV    (10<<3) /* security/authorization messages (private) */
+#define SYSLOG_FTP         (11<<3) /* ftp daemon */
+#define SYSLOG_LOCAL0      (16<<3) /* reserved for local use */
+#define SYSLOG_LOCAL1      (17<<3) /* reserved for local use */
+#define SYSLOG_LOCAL2      (18<<3) /* reserved for local use */
+#define SYSLOG_LOCAL3      (19<<3) /* reserved for local use */
+#define SYSLOG_LOCAL4      (20<<3) /* reserved for local use */
+#define SYSLOG_LOCAL5      (21<<3) /* reserved for local use */
+#define SYSLOG_LOCAL6      (22<<3) /* reserved for local use */
+#define SYSLOG_LOCAL7      (23<<3) /* reserved for local use */
+
 //------------------------------------------------------------------------------
 // MQTT
 //------------------------------------------------------------------------------

code/espurna/debug.ino

@@ -19,6 +19,9 @@ extern "C" {
 #if DEBUG_UDP_SUPPORT
 #include <WiFiUdp.h>
 WiFiUDP _udp_debug;
+#if DEBUG_UDP_PORT == 514
+char _udp_header[40] = {0};
+#endif
 #endif
 
 void _debugSend(char * message) {
@@ -42,8 +45,8 @@ void _debugSend(char * message) {
         if (systemCheck()) {
         #endif
             _udp_debug.beginPacket(DEBUG_UDP_IP, DEBUG_UDP_PORT);
-            #if DEBUG_ADD_TIMESTAMP
-                _udp_debug.write(timestamp);
+            #if DEBUG_UDP_PORT == 514
+                _udp_debug.write(_udp_header);
             #endif
             _udp_debug.write(message);
             _udp_debug.endPacket();
@@ -132,6 +135,13 @@ void debugSetup() {
         }
     });
 
+    #if DEBUG_UDP_SUPPORT
+    #if DEBUG_UDP_PORT == 514
+        snprintf_P(_udp_header, sizeof(_udp_header), PSTR("<%u>%s ESPurna[0]: "), DEBUG_UDP_FAC_PRI, getSetting("hostname").c_str());
+    #endif
+    #endif
+
+
 }
 
 #endif // DEBUG_WEB_SUPPORT