Add silent flag to reduce output (#67)

.gitignore

@@ -3,3 +3,4 @@
 *.sw?
 /.idea
 .goreleaser.yml
+*.conf

README.md

@@ -34,8 +34,8 @@ anything.
 ```
 
 ```
-usage: wireproxy [-h|--help] -c|--config "<value>" [-d|--daemon]
-                 [-n|--configtest]
+usage: wireproxy [-h|--help] [-c|--config "<value>"] [-s|--silent]
+                 [-d|--daemon] [-v|--version] [-n|--configtest]
 
                  Userspace wireguard client for proxying
 
@@ -43,7 +43,9 @@ Arguments:
 
   -h  --help        Print help information
   -c  --config      Path of configuration file
+  -s  --silent      Silent mode
   -d  --daemon      Make wireproxy run in background
+  -v  --version     Print version
   -n  --configtest  Configtest mode. Only check the configuration file for
                     validity.
 ```

cmd/wireproxy/main.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/akamensky/argparse"
 	"github.com/octeep/wireproxy"
+	"golang.zx2c4.com/wireguard/device"
 	"suah.dev/protect"
 )
 
@@ -63,6 +64,7 @@ func main() {
 	parser := argparse.NewParser("wireproxy", "Userspace wireguard client for proxying")
 
 	config := parser.String("c", "config", &argparse.Options{Help: "Path of configuration file"})
+	silent := parser.Flag("s", "silent", &argparse.Options{Help: "Silent mode"})
 	daemon := parser.Flag("d", "daemon", &argparse.Options{Help: "Make wireproxy run in background"})
 	printVerison := parser.Flag("v", "version", &argparse.Options{Help: "Print version"})
 	configTest := parser.Flag("n", "configtest", &argparse.Options{Help: "Configtest mode. Only check the configuration file for validity."})
@@ -114,10 +116,15 @@ func main() {
 		return
 	}
 
+	logLevel := device.LogLevelVerbose
+	if *silent {
+		logLevel = device.LogLevelSilent
+	}
+
 	// no file access is allowed from now on, only networking
 	pledgeOrPanic("stdio inet dns")
 
-	tnet, err := wireproxy.StartWireguard(conf.Device)
+	tnet, err := wireproxy.StartWireguard(conf.Device, logLevel)
 	if err != nil {
 		log.Fatal(err)
 	}

wireguard.go

@@ -53,7 +53,7 @@ func createIPCRequest(conf *DeviceConfig) (*DeviceSetting, error) {
 }
 
 // StartWireguard creates a tun interface on netstack given a configuration
-func StartWireguard(conf *DeviceConfig) (*VirtualTun, error) {
+func StartWireguard(conf *DeviceConfig, logLevel int) (*VirtualTun, error) {
 	setting, err := createIPCRequest(conf)
 	if err != nil {
 		return nil, err
@@ -63,7 +63,7 @@ func StartWireguard(conf *DeviceConfig) (*VirtualTun, error) {
 	if err != nil {
 		return nil, err
 	}
-	dev := device.NewDevice(tun, conn.NewDefaultBind(), device.NewLogger(device.LogLevelVerbose, ""))
+	dev := device.NewDevice(tun, conn.NewDefaultBind(), device.NewLogger(logLevel, ""))
 	err = dev.IpcSet(setting.ipcRequest)
 	if err != nil {
 		return nil, err