Add option to only compare MAC for alerting

src/compare.go

@@ -6,12 +6,24 @@ import (
 )
 
 func host_in_db(host Host, dbHosts []Host) bool { // Check if host is already in DB
-	for _, oneHost := range dbHosts {
-		if host.Ip == oneHost.Ip && host.Mac == oneHost.Mac && host.Hw == oneHost.Hw {
-			oneHost.Date = host.Date
-			oneHost.Now = 1
-			db_update(oneHost)
-			return true
+	
+	if AppConfig.OnlyCompareMac {
+		for _, oneHost := range dbHosts {
+			if host.Mac == oneHost.Mac {
+				oneHost.Date = host.Date
+				oneHost.Now = 1
+				db_update(oneHost)
+				return true
+			}
+		}
+	} else {
+		for _, oneHost := range dbHosts {
+			if host.Ip == oneHost.Ip && host.Mac == oneHost.Mac && host.Hw == oneHost.Hw {
+				oneHost.Date = host.Date
+				oneHost.Now = 1
+				db_update(oneHost)
+				return true
+			}
 		}
 	}
 	return false
@@ -27,4 +39,4 @@ func hosts_compare(foundHosts []Host, dbHosts []Host) {
 			db_insert(oneHost)
 		}
 	}
-}
+}

src/getconfig.go

@@ -14,10 +14,11 @@ func get_config() (config Conf) {
 	viper.SetDefault("TIMEOUT", "60")
 	viper.SetDefault("SHOUTRRR_URL", "")
 	viper.SetDefault("THEME", "solar")
+	viper.SetDefault("ONLY_COMPARE_MAC", false)
 
-    viper.SetConfigFile(configPath)
+	viper.SetConfigFile(configPath)
 	viper.SetConfigType("env")
-    viper.ReadInConfig()
+	viper.ReadInConfig()
 
 	viper.AutomaticEnv() // Get ENVIRONMENT variables
 
@@ -28,6 +29,7 @@ func get_config() (config Conf) {
 	config.Timeout = viper.GetInt("TIMEOUT")
 	config.ShoutUrl = viper.Get("SHOUTRRR_URL").(string)
 	config.Theme = viper.Get("THEME").(string)
+	config.OnlyCompareMac = viper.GetBool("ONLY_COMPARE_MAC")
 
 	return config
 }
@@ -37,4 +39,4 @@ func write_config() {
 	viper.SetConfigType("env")
 	viper.Set("THEME", AppConfig.Theme)
 	viper.WriteConfig()
-}
+}

src/main.go

@@ -23,6 +23,7 @@ type Conf struct {
     Timeout  int
     ShoutUrl string
     Theme    string
+    OnlyCompareMac bool
 }
 
 var AppConfig Conf