[android] allow selection/deselection of network resources on android peers (#4607)

client/internal/connect.go

@@ -74,6 +74,7 @@ func (c *ConnectClient) RunOnAndroid(
 	networkChangeListener listener.NetworkChangeListener,
 	dnsAddresses []netip.AddrPort,
 	dnsReadyListener dns.ReadyListener,
+	stateFilePath string,
 ) error {
 	// in case of non Android os these variables will be nil
 	mobileDependency := MobileDependency{
@@ -82,6 +83,7 @@ func (c *ConnectClient) RunOnAndroid(
 		NetworkChangeListener: networkChangeListener,
 		HostDNSAddresses:      dnsAddresses,
 		DnsReadyListener:      dnsReadyListener,
+		StateFilePath:         stateFilePath,
 	}
 	return c.run(mobileDependency, nil)
 }

client/internal/engine.go

@@ -255,7 +255,7 @@ func NewEngine(
 	sm := profilemanager.NewServiceManager("")
 
 	path := sm.GetStatePath()
-	if runtime.GOOS == "ios" {
+	if runtime.GOOS == "ios" || runtime.GOOS == "android" {
 		if !fileExists(mobileDep.StateFilePath) {
 			err := createFile(mobileDep.StateFilePath)
 			if err != nil {
@@ -1831,6 +1831,18 @@ func (e *Engine) GetWgAddr() netip.Addr {
 	return e.wgInterface.Address().IP
 }
 
+func (e *Engine) RenewTun(fd int) error {
+	e.syncMsgMux.Lock()
+	wgInterface := e.wgInterface
+	e.syncMsgMux.Unlock()
+
+	if wgInterface == nil {
+		return fmt.Errorf("wireguard interface not initialized")
+	}
+
+	return wgInterface.RenewTun(fd)
+}
+
 // updateDNSForwarder start or stop the DNS forwarder based on the domains and the feature flag
 func (e *Engine) updateDNSForwarder(
 	enabled bool,

client/internal/engine_test.go

@@ -110,6 +110,10 @@ type MockWGIface struct {
 	LastActivitiesFunc         func() map[string]monotime.Time
 }
 
+func (m *MockWGIface) RenewTun(_ int) error {
+	return nil
+}
+
 func (m *MockWGIface) RemoveEndpointAddress(_ string) error {
 	return nil
 }

client/internal/iface_common.go

@@ -20,6 +20,7 @@ import (
 type wgIfaceBase interface {
 	Create() error
 	CreateOnAndroid(routeRange []string, ip string, domains []string) error
+	RenewTun(fd int) error
 	IsUserspaceBind() bool
 	Name() string
 	Address() wgaddr.Address