From a9831d9cc6f4131c77fdb4814b77840015838e4f Mon Sep 17 00:00:00 2001
From: Timo Wischer <twischer@freenet.de>
Date: Mon, 29 Feb 2016 12:13:03 +0100
Subject: [PATCH] Make it possible to disable syslog

---
 esp-link/cgiservices.c | 7 ++++++-
 esp-link/main.c        | 5 ++++-
 include/user_config.h  | 9 +++++++++
 serial/serbridge.c     | 7 +++++++
 4 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/esp-link/cgiservices.c b/esp-link/cgiservices.c
index 6d3704c..c42fd96 100644
--- a/esp-link/cgiservices.c
+++ b/esp-link/cgiservices.c
@@ -2,10 +2,13 @@
 #include "cgiwifi.h"
 #include "cgi.h"
 #include "config.h"
-#include "syslog.h"
 #include "sntp.h"
 #include "cgimqtt.h"
 
+#ifdef SYSLOG
+#include "syslog.h"
+#endif
+
 #ifdef CGISERVICES_DBG
 #define DBG(format, ...) do { os_printf(format, ## __VA_ARGS__); } while(0)
 #else
@@ -138,6 +141,7 @@ int ICACHE_FLASH_ATTR cgiServicesInfo(HttpdConnData *connData) {
 int ICACHE_FLASH_ATTR cgiServicesSet(HttpdConnData *connData) {
   if (connData->conn == NULL) return HTTPD_CGI_DONE; // Connection aborted. Clean up.
 
+#ifdef SYSLOG
   int8_t syslog = 0;
 
   syslog |= getStringArg(connData, "syslog_host", flashConfig.syslog_host, sizeof(flashConfig.syslog_host));
@@ -154,6 +158,7 @@ int ICACHE_FLASH_ATTR cgiServicesSet(HttpdConnData *connData) {
   if (syslog > 0) {
     syslog_init(flashConfig.syslog_host);
   }
+#endif
 
   int8_t sntp = 0;
   sntp |= getInt8Arg(connData, "timezone_offset", &flashConfig.timezone_offset);
diff --git a/esp-link/main.c b/esp-link/main.c
index bfc0745..e7a65f1 100644
--- a/esp-link/main.c
+++ b/esp-link/main.c
@@ -29,9 +29,12 @@
 #include "config.h"
 #include "log.h"
 #include "gpio.h"
-#include "syslog.h"
 #include "cgiservices.h"
 
+#ifdef SYSLOG
+#include "syslog.h"
+#endif
+
 #define NOTICE(format, ...) do {	                                          \
 	LOG_NOTICE(format, ## __VA_ARGS__ );                                      \
 	os_printf(format "\n", ## __VA_ARGS__);                                   \
diff --git a/include/user_config.h b/include/user_config.h
index a939533..f0b6d3e 100644
--- a/include/user_config.h
+++ b/include/user_config.h
@@ -37,6 +37,15 @@
 // If defined, the default hostname for DHCP will include the chip ID to make it unique
 #undef CHIP_IN_HOSTNAME
 
+#ifndef SYSLOG
+#define LOG_DEBUG(format, ...) do { } while(0)
+#define LOG_NOTICE(format, ...) do { } while(0)
+#define LOG_WARN(format, ...) do { } while(0)
+#define LOG_INFO(format, ...) do { } while(0)
+#define LOG_ERR(format, ...) do { } while(0)
+#endif
+
+
 extern char* esp_link_version;
 extern uint8_t UTILS_StrToIP(const char* str, void *ip);
 
diff --git a/serial/serbridge.c b/serial/serbridge.c
index 1e82e3d..2ba1834 100644
--- a/serial/serbridge.c
+++ b/serial/serbridge.c
@@ -10,7 +10,10 @@
 #include "console.h"
 #include "slip.h"
 #include "cmd.h"
+
+#ifdef SYSLOG
 #include "syslog.h"
+#endif
 
 #define SKIP_AT_RESET
 
@@ -405,12 +408,16 @@ serbridgeConnectCb(void *arg)
 #ifdef SERBR_DBG
   os_printf("Accept port %d, conn=%p, pool slot %d\n", conn->proto.tcp->local_port, conn, i);
 #endif
+#ifdef SYSLOG
   syslog(SYSLOG_FAC_USER, SYSLOG_PRIO_NOTICE, "esp-link", "Accept port %d, conn=%p, pool slot %d\n", conn->proto.tcp->local_port, conn, i);
+#endif
   if (i==MAX_CONN) {
 #ifdef SERBR_DBG
     os_printf("Aiee, conn pool overflow!\n");
 #endif
+#ifdef SYSLOG
 	syslog(SYSLOG_FAC_USER, SYSLOG_PRIO_WARNING, "esp-link", "Aiee, conn pool overflow!\n");
+#endif
     espconn_disconnect(conn);
     return;
   }