adding freebsd logic and using wgctrl.Device

netclient/functions/localport.go

@@ -1,30 +1,32 @@
+//go:build !freebsd
+// +build !freebsd
+
 package functions
 
 import (
-	"errors"
 	"strconv"
-	"strings"
 
 	"github.com/gravitl/netmaker/logger"
 	"github.com/gravitl/netmaker/netclient/config"
 	"github.com/gravitl/netmaker/netclient/local"
 	"github.com/gravitl/netmaker/netclient/ncutils"
+	"golang.zx2c4.com/wireguard/wgctrl"
 )
 
 // GetLocalListenPort - Gets the port running on the local interface
 func GetLocalListenPort(ifacename string) (int32, error) {
-	portstring, err := ncutils.RunCmd("wg show "+ifacename+" listen-port", false)
+	client, err := wgctrl.New()
 	if err != nil {
+		logger.Log(0, "failed to start wgctrl")
 		return 0, err
 	}
-	portstring = strings.TrimSuffix(portstring, "\n")
-	i, err := strconv.ParseInt(portstring, 10, 32)
+	defer client.Close()
+	device, err := client.Device(ifacename)
 	if err != nil {
+		logger.Log(0, "failed to parse interface")
 		return 0, err
-	} else if i == 0 {
-		return 0, errors.New("parsed port is unset or invalid")
 	}
-	return int32(i), nil
+	return int32(device.ListenPort), nil
 }
 
 // UpdateLocalListenPort - check local port, if different, mod config and publish