log: add LogFunc so we can define a custom logger

log.go

@@ -0,0 +1,16 @@
+package main
+
+import "log"
+
+// LogFunc .
+type LogFunc func(f string, v ...interface{})
+
+var logf LogFunc
+
+func init() {
+	logf = func(f string, v ...interface{}) {
+		if conf.Verbose {
+			log.Printf(f, v...)
+		}
+	}
+}

main.go

@@ -11,12 +11,6 @@ import (
 // VERSION .
 const VERSION = "0.4.0"
 
-func logf(f string, v ...interface{}) {
-	if conf.Verbose {
-		log.Printf(f, v...)
-	}
-}
-
 func dialerFromConf() Dialer {
 	// global forwarders in xx.conf
 	var forwarders []Dialer