[client] Add support for state manager on iOS (#2996)

client/internal/config.go

@@ -46,6 +46,7 @@ type ConfigInput struct {
 	ManagementURL       string
 	AdminURL            string
 	ConfigPath          string
+	StateFilePath       string
 	PreSharedKey        *string
 	ServerSSHAllowed    *bool
 	NATExternalIPs      []string
@@ -105,10 +106,10 @@ type Config struct {
 
 	// DNSRouteInterval is the interval in which the DNS routes are updated
 	DNSRouteInterval time.Duration
-	//Path to a certificate used for mTLS authentication
+	// Path to a certificate used for mTLS authentication
 	ClientCertPath string
 
-	//Path to corresponding private key of ClientCertPath
+	// Path to corresponding private key of ClientCertPath
 	ClientCertKeyPath string
 
 	ClientCertKeyPair *tls.Certificate `json:"-"`
@@ -116,7 +117,7 @@ type Config struct {
 
 // ReadConfig read config file and return with Config. If it is not exists create a new with default values
 func ReadConfig(configPath string) (*Config, error) {
-	if configFileIsExists(configPath) {
+	if fileExists(configPath) {
 		err := util.EnforcePermission(configPath)
 		if err != nil {
 			log.Errorf("failed to enforce permission on config dir: %v", err)
@@ -149,7 +150,7 @@ func ReadConfig(configPath string) (*Config, error) {
 
 // UpdateConfig update existing configuration according to input configuration and return with the configuration
 func UpdateConfig(input ConfigInput) (*Config, error) {
-	if !configFileIsExists(input.ConfigPath) {
+	if !fileExists(input.ConfigPath) {
 		return nil, status.Errorf(codes.NotFound, "config file doesn't exist")
 	}
 
@@ -158,7 +159,7 @@ func UpdateConfig(input ConfigInput) (*Config, error) {
 
 // UpdateOrCreateConfig reads existing config or generates a new one
 func UpdateOrCreateConfig(input ConfigInput) (*Config, error) {
-	if !configFileIsExists(input.ConfigPath) {
+	if !fileExists(input.ConfigPath) {
 		log.Infof("generating new config %s", input.ConfigPath)
 		cfg, err := createNewConfig(input)
 		if err != nil {
@@ -472,11 +473,19 @@ func isPreSharedKeyHidden(preSharedKey *string) bool {
 	return false
 }
 
-func configFileIsExists(path string) bool {
+func fileExists(path string) bool {
 	_, err := os.Stat(path)
 	return !os.IsNotExist(err)
 }
 
+func createFile(path string) error {
+	file, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	return file.Close()
+}
+
 // UpdateOldManagementURL checks whether client can switch to the new Management URL with port 443 and the management domain.
 // If it can switch, then it updates the config and returns a new one. Otherwise, it returns the provided config.
 // The check is performed only for the NetBird's managed version.

client/internal/connect.go

@@ -91,6 +91,7 @@ func (c *ConnectClient) RunOniOS(
 	fileDescriptor int32,
 	networkChangeListener listener.NetworkChangeListener,
 	dnsManager dns.IosDnsManager,
+	stateFilePath string,
 ) error {
 	// Set GC percent to 5% to reduce memory usage as iOS only allows 50MB of memory for the extension.
 	debug.SetGCPercent(5)
@@ -99,6 +100,7 @@ func (c *ConnectClient) RunOniOS(
 		FileDescriptor:        fileDescriptor,
 		NetworkChangeListener: networkChangeListener,
 		DnsManager:            dnsManager,
+		StateFilePath:         stateFilePath,
 	}
 	return c.run(mobileDependency, nil, nil)
 }

client/internal/engine.go

@@ -243,6 +243,17 @@ func NewEngineWithProbes(
 		probes:         probes,
 		checks:         checks,
 	}
+	if runtime.GOOS == "ios" {
+		if !fileExists(mobileDep.StateFilePath) {
+			err := createFile(mobileDep.StateFilePath)
+			if err != nil {
+				log.Errorf("failed to create state file: %v", err)
+				// we are not exiting as we can run without the state manager
+			}
+		}
+
+		engine.stateManager = statemanager.New(mobileDep.StateFilePath)
+	}
 	if path := statemanager.GetDefaultStatePath(); path != "" {
 		engine.stateManager = statemanager.New(path)
 	}

client/internal/mobile_dependency.go

@@ -19,4 +19,5 @@ type MobileDependency struct {
 	//	iOS only
 	DnsManager     dns.IosDnsManager
 	FileDescriptor int32
+	StateFilePath  string
 }

client/internal/routeselector/routeselector_test.go

@@ -273,3 +273,88 @@ func TestRouteSelector_FilterSelected(t *testing.T) {
 		"route2|192.168.0.0/16": {},
 	}, filtered)
 }
+
+func TestRouteSelector_NewRoutesBehavior(t *testing.T) {
+	initialRoutes := []route.NetID{"route1", "route2", "route3"}
+	newRoutes := []route.NetID{"route1", "route2", "route3", "route4", "route5"}
+
+	tests := []struct {
+		name            string
+		initialState    func(rs *routeselector.RouteSelector) error // Setup initial state
+		wantNewSelected []route.NetID                               // Expected selected routes after new routes appear
+	}{
+		{
+			name: "New routes with initial selectAll state",
+			initialState: func(rs *routeselector.RouteSelector) error {
+				rs.SelectAllRoutes()
+				return nil
+			},
+			// When selectAll is true, all routes including new ones should be selected
+			wantNewSelected: []route.NetID{"route1", "route2", "route3", "route4", "route5"},
+		},
+		{
+			name: "New routes after specific selection",
+			initialState: func(rs *routeselector.RouteSelector) error {
+				return rs.SelectRoutes([]route.NetID{"route1", "route2"}, false, initialRoutes)
+			},
+			// When specific routes were selected, new routes should remain unselected
+			wantNewSelected: []route.NetID{"route1", "route2"},
+		},
+		{
+			name: "New routes after deselect all",
+			initialState: func(rs *routeselector.RouteSelector) error {
+				rs.DeselectAllRoutes()
+				return nil
+			},
+			// After deselect all, new routes should remain unselected
+			wantNewSelected: []route.NetID{},
+		},
+		{
+			name: "New routes after deselecting specific routes",
+			initialState: func(rs *routeselector.RouteSelector) error {
+				rs.SelectAllRoutes()
+				return rs.DeselectRoutes([]route.NetID{"route1"}, initialRoutes)
+			},
+			// After deselecting specific routes, new routes should remain unselected
+			wantNewSelected: []route.NetID{"route2", "route3"},
+		},
+		{
+			name: "New routes after selecting with append",
+			initialState: func(rs *routeselector.RouteSelector) error {
+				return rs.SelectRoutes([]route.NetID{"route1"}, true, initialRoutes)
+			},
+			// When routes were appended, new routes should remain unselected
+			wantNewSelected: []route.NetID{"route1"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			rs := routeselector.NewRouteSelector()
+
+			// Setup initial state
+			err := tt.initialState(rs)
+			require.NoError(t, err)
+
+			// Verify selection state with new routes
+			for _, id := range newRoutes {
+				assert.Equal(t, rs.IsSelected(id), slices.Contains(tt.wantNewSelected, id),
+					"Route %s selection state incorrect", id)
+			}
+
+			// Additional verification using FilterSelected
+			routes := route.HAMap{
+				"route1|10.0.0.0/8":     {},
+				"route2|192.168.0.0/16": {},
+				"route3|172.16.0.0/12":  {},
+				"route4|10.10.0.0/16":   {},
+				"route5|192.168.1.0/24": {},
+			}
+
+			filtered := rs.FilterSelected(routes)
+			expectedLen := len(tt.wantNewSelected)
+			assert.Equal(t, expectedLen, len(filtered),
+				"FilterSelected returned wrong number of routes, got %d want %d", len(filtered), expectedLen)
+		})
+	}
+}