Add clash mode selector & always on

Library/Database/SharedPreferences.swift

@@ -11,6 +11,7 @@ public enum SharedPreferences {
     @Preference<Bool>("disable_memory_limit", defaultValue: disableMemoryLimitByDefault) public static var disableMemoryLimit
 
     @Preference<Int>("max_log_lines", defaultValue: 300) public static var maxLogLines
+    @Preference<Bool>("always_on", defaultValue: false) public static var alwaysOn
 
     #if os(macOS)
         @Preference<Bool>("show_menu_bar_extra", defaultValue: true) public static var showMenuBarExtra

Library/Network/CommandClient.swift

@@ -6,6 +6,7 @@ public class CommandClient: ObservableObject {
         case status
         case groups
         case log
+        case clashMode
     }
 
     private let connectionType: ConnectionType
@@ -17,11 +18,15 @@ public class CommandClient: ObservableObject {
     @Published public var status: LibboxStatusMessage?
     @Published public var groups: [LibboxOutboundGroup]?
     @Published public var logList: [String]
+    @Published public var clashModeList: [String]
+    @Published public var clashMode: String
 
     public init(_ connectionType: ConnectionType, logMaxLines: Int = 300) {
         self.connectionType = connectionType
         self.logMaxLines = logMaxLines
         logList = []
+        clashModeList = []
+        clashMode = ""
         isConnected = false
     }
 
@@ -57,6 +62,8 @@ public class CommandClient: ObservableObject {
             clientOptions.command = LibboxCommandGroup
         case .log:
             clientOptions.command = LibboxCommandLog
+        case .clashMode:
+            clientOptions.command = LibboxCommandClashMode
         }
         clientOptions.statusInterval = Int64(2 * NSEC_PER_SEC)
         let client = LibboxNewCommandClient(clientHandler(self), clientOptions)!
@@ -68,6 +75,7 @@ public class CommandClient: ObservableObject {
                     try client.connect()
                     commandClient = client
                     return
+                } catch {
                 }
                 try Task.checkCancellation()
             }
@@ -127,5 +135,18 @@ public class CommandClient: ObservableObject {
                 self.commandClient.groups = newGroups
             }
         }
+
+        func initializeClashMode(_ modeList: LibboxStringIteratorProtocol?, currentMode: String?) {
+            DispatchQueue.main.sync {
+                self.commandClient.clashModeList = modeList!.toArray()
+                self.commandClient.clashMode = currentMode!
+            }
+        }
+
+        func updateClashMode(_ newMode: String?) {
+            DispatchQueue.main.sync {
+                self.commandClient.clashMode = newMode!
+            }
+        }
     }
 }

Library/Network/ExtensionPlatformInterface.swift

@@ -5,6 +5,7 @@ import NetworkExtension
 public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtocol {
     private let tunnel: NEPacketTunnelProvider
     private let commandServer: LibboxCommandServer
+    private var networkSettings: NEPacketTunnelNetworkSettings?
 
     init(_ tunnel: NEPacketTunnelProvider, _ logServer: LibboxCommandServer) {
         self.tunnel = tunnel
@@ -88,6 +89,7 @@ public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtoc
             settings.proxySettings = proxySettings
         }
 
+        networkSettings = settings
         try runBlocking { [self] in
             try await tunnel.setTunnelNetworkSettings(settings)
         }
@@ -153,4 +155,21 @@ public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtoc
     public func underNetworkExtension() -> Bool {
         true
     }
+
+    public func clearDNSCache() {
+        guard let networkSettings else {
+            return
+        }
+        tunnel.reasserting = true
+        tunnel.setTunnelNetworkSettings(nil) { _ in
+        }
+        tunnel.setTunnelNetworkSettings(networkSettings) { _ in
+        }
+        tunnel.reasserting = false
+    }
+    
+    public func closeTun() throws {
+        tunnel.setTunnelNetworkSettings(nil) { _ in
+        }
+    }
 }

Library/Network/ExtensionProfile.swift

@@ -38,8 +38,26 @@ public class ExtensionProfile: ObservableObject {
         }
     }
 
+    private func setOnDemandRules() {
+        let interfaceRule = NEOnDemandRuleConnect()
+        interfaceRule.interfaceTypeMatch = .any
+        let probeRule = NEOnDemandRuleConnect()
+        probeRule.probeURL = URL(string: "http://captive.apple.com")
+        manager.onDemandRules = [interfaceRule, probeRule]
+    }
+
+    public func updateAlwaysOn(_ newState: Bool) async throws {
+        manager.isOnDemandEnabled = newState
+        setOnDemandRules()
+        try await manager.saveToPreferences()
+    }
+
     public func start() async throws {
         manager.isEnabled = true
+        if SharedPreferences.alwaysOn {
+            manager.isOnDemandEnabled = true
+            setOnDemandRules()
+        }
         try await manager.saveToPreferences()
         #if os(macOS)
             if Variant.useSystemExtension {
@@ -53,6 +71,7 @@ public class ExtensionProfile: ObservableObject {
     }
 
     public func stop() {
+        manager.isOnDemandEnabled = false
         manager.connection.stopVPNTunnel()
     }