From a79dd76fd64721bb22e7d5b991db0d009aa6de5f Mon Sep 17 00:00:00 2001
From: netbyte <alex.tsai@protonmail.com>
Date: Tue, 10 May 2022 16:22:50 +0800
Subject: [PATCH] fix global mode

---
 main.go    | 14 ++++++++------
 tun/tun.go |  8 ++++----
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/main.go b/main.go
index a056e54..4cfa2c5 100644
--- a/main.go
+++ b/main.go
@@ -42,13 +42,15 @@ func main() {
 }
 
 func initConfig(config *config.Config) {
-	cipher.GenerateKey(config.Key)
-	os := runtime.GOOS
-	if os == "linux" {
-		config.DefaultGateway = netutil.GetLinuxDefaultGateway()
-	} else if os == "darwin" {
-		config.DefaultGateway = netutil.GetMacDefaultGateway()
+	if !config.ServerMode {
+		os := runtime.GOOS
+		if os == "linux" {
+			config.DefaultGateway = netutil.GetLinuxDefaultGateway()
+		} else if os == "darwin" {
+			config.DefaultGateway = netutil.GetMacDefaultGateway()
+		}
 	}
+	cipher.GenerateKey(config.Key)
 	json, _ := json.Marshal(config)
 	log.Printf("init config:%s", string(json))
 }
diff --git a/tun/tun.go b/tun/tun.go
index c8d9ab4..d7cb15f 100644
--- a/tun/tun.go
+++ b/tun/tun.go
@@ -33,7 +33,7 @@ func configTun(config config.Config, iface *water.Interface) {
 		netutil.ExecCmd("/sbin/ip", "link", "set", "dev", iface.Name(), "mtu", strconv.Itoa(config.MTU))
 		netutil.ExecCmd("/sbin/ip", "addr", "add", config.CIDR, "dev", iface.Name())
 		netutil.ExecCmd("/sbin/ip", "link", "set", "dev", iface.Name(), "up")
-		if config.GlobalMode {
+		if !config.ServerMode && config.GlobalMode {
 			physicalIface := netutil.GetPhysicalInterface()
 			serverIP := netutil.LookupIP(strings.Split(config.ServerAddr, ":")[0])
 			if physicalIface != "" && serverIP != "" {
@@ -48,8 +48,8 @@ func configTun(config config.Config, iface *water.Interface) {
 		gateway := ipNet.IP.To4()
 		gateway[3]++
 		netutil.ExecCmd("ifconfig", iface.Name(), "inet", ip.String(), gateway.String(), "up")
-		physicalIface := netutil.GetPhysicalInterface()
-		if config.GlobalMode {
+		if !config.ServerMode && config.GlobalMode {
+			physicalIface := netutil.GetPhysicalInterface()
 			serverIP := netutil.LookupIP(strings.Split(config.ServerAddr, ":")[0])
 			if physicalIface != "" && serverIP != "" {
 				netutil.ExecCmd("route", "add", serverIP, config.DefaultGateway)
@@ -67,7 +67,7 @@ func configTun(config config.Config, iface *water.Interface) {
 
 func Reset(config config.Config) {
 	os := runtime.GOOS
-	if os == "darwin" && config.GlobalMode {
+	if os == "darwin" && !config.ServerMode && config.GlobalMode {
 		netutil.ExecCmd("route", "add", "default", config.DefaultGateway)
 		netutil.ExecCmd("route", "change", "default", config.DefaultGateway)
 	}