Fix for issue #23: null panic if logger obj is null due no active syslog sink

Signed-off-by: Russ Magee <rmagee@gmail.com>

logger/logger_linux.go

@@ -11,6 +11,7 @@ import (
 
 // Priority is the logger priority
 type Priority = sl.Priority
+
 // Writer is a syslog Writer
 type Writer = sl.Writer
 
@@ -75,50 +76,81 @@ func New(flags Priority, tag string) (w *Writer, e error) {
 
 // Alert returns a log Alert error
 func Alert(s string) error {
+	if l != nil {
 		return l.Alert(s)
 	}
+	return nil
+
+}
 
 // LogClose closes the log Writer.
 func LogClose() error {
+	if l != nil {
 		return l.Close()
 	}
+	return nil
+}
 
 // LogCrit returns a log Alert error
 func LogCrit(s string) error {
+	if l != nil {
 		return l.Crit(s)
 	}
+	return nil
+}
 
 // LogDebug returns a log Debug error
 func LogDebug(s string) error {
+	if l != nil {
 		return l.Debug(s)
 	}
+	return nil
+}
 
 // LogEmerg returns a log Emerg error
 func LogEmerg(s string) error {
+	if l != nil {
 		return l.Emerg(s)
 	}
+	return nil
+}
 
 // LogErr returns a log Err error
 func LogErr(s string) error {
+	if l != nil {
 		return l.Err(s)
 	}
+	return nil
+}
 
 // LogInfo returns a log Info error
 func LogInfo(s string) error {
+	if l != nil {
 		return l.Info(s)
 	}
+	return nil
+}
 
 // LogNotice returns a log Notice error
 func LogNotice(s string) error {
+	if l != nil {
 		return l.Notice(s)
 	}
+	return nil
+}
 
 // LogWarning returns a log Warning error
 func LogWarning(s string) error {
+	if l != nil {
 		return l.Warning(s)
 	}
+	return nil
+}
 
 // LogWrite writes to the logger at default level
 func LogWrite(b []byte) (int, error) {
+	if l != nil {
 		return l.Write(b)
 	}
+	return len(b),nil
+}

xsnet/net.go

@@ -41,9 +41,9 @@ import (
 	"time"
 
 	hkex "blitter.com/go/herradurakex"
-	"blitter.com/go/xs/logger"
 	"blitter.com/go/kyber"
 	"blitter.com/go/newhope"
+	"blitter.com/go/xs/logger"
 )
 
 /*---------------------------------------------------------------------*/