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")
+	defer client.Close()
-	i, err := strconv.ParseInt(portstring, 10, 32)
+	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

netclient/functions/localport_freebsd.go

@@ -0,0 +1,50 @@
+//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/ncutils"
+)
+
+// 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)
+	if err != nil {
+		return 0, err
+	}
+	portstring = strings.TrimSuffix(portstring, "\n")
+	i, err := strconv.ParseInt(portstring, 10, 32)
+	if err != nil {
+		return 0, err
+	} else if i == 0 {
+		return 0, errors.New("parsed port is unset or invalid")
+	}
+	return int32(i), nil
+}
+
+// UpdateLocalListenPort - check local port, if different, mod config and publish
+func UpdateLocalListenPort(nodeCfg *config.ClientConfig) error {
+	var err error
+	localPort, err := GetLocalListenPort(nodeCfg.Node.Interface)
+	if err != nil {
+		logger.Log(1, "error encountered checking local listen port: ", err.Error())
+	} else if nodeCfg.Node.LocalListenPort != localPort && localPort != 0 {
+		logger.Log(1, "local port has changed from ", strconv.Itoa(int(nodeCfg.Node.LocalListenPort)), " to ", strconv.Itoa(int(localPort)))
+		nodeCfg.Node.LocalListenPort = localPort
+		err = config.ModConfig(&nodeCfg.Node)
+		if err != nil {
+			return err
+		}
+		if err := PublishNodeUpdate(nodeCfg); err != nil {
+			logger.Log(0, "could not publish local port change")
+		}
+	}
+	return err
+}