127 lines
4.0 KiB
Swift
127 lines
4.0 KiB
Swift
//
|
||
// PacketTunnelProvider.swift
|
||
// punchnet
|
||
//
|
||
// Created by 安礼成 on 2025/8/3.
|
||
//
|
||
|
||
import NetworkExtension
|
||
|
||
enum TunnelError: Error {
|
||
case invalidConfiguration
|
||
case invalidContext
|
||
}
|
||
|
||
class PacketTunnelProvider: NEPacketTunnelProvider {
|
||
var contextActor: SDLContextActor?
|
||
private var rootTask: Task<Void, Error>?
|
||
|
||
override func startTunnel(options: [String: NSObject]?, completionHandler: @escaping (Error?) -> Void) {
|
||
// 重置通知中心
|
||
SDLTunnelAppNotifier.shared.clear()
|
||
|
||
// 如果当前在运行状态，不允许重复请求
|
||
guard self.contextActor == nil else {
|
||
completionHandler(TunnelError.invalidContext)
|
||
return
|
||
}
|
||
|
||
// 加密算法
|
||
let rsaCipher = try! CCRSACipher(keySize: 1024)
|
||
self.rootTask = Task {
|
||
// host: "192.168.0.101", port: 1265
|
||
guard let options, let config = await SDLConfiguration.parse(options: options) else {
|
||
completionHandler(TunnelError.invalidConfiguration)
|
||
return
|
||
}
|
||
|
||
self.contextActor = SDLContextActor(provider: self, config: config, rsaCipher: rsaCipher)
|
||
await self.contextActor?.start()
|
||
try await self.contextActor?.waitForReady()
|
||
|
||
completionHandler(nil)
|
||
}
|
||
}
|
||
|
||
override func stopTunnel(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) {
|
||
// Add code here to start the process of stopping the tunnel.
|
||
Task {
|
||
await self.contextActor?.stop()
|
||
self.contextActor = nil
|
||
|
||
self.rootTask?.cancel()
|
||
self.rootTask = nil
|
||
|
||
completionHandler()
|
||
}
|
||
}
|
||
|
||
override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) {
|
||
// Add code here to handle the message.
|
||
Task {
|
||
do {
|
||
let message = try AppRequest(serializedBytes: messageData)
|
||
let replyData = try await self.handleAppRequest(message: message)
|
||
completionHandler?(replyData)
|
||
} catch let err {
|
||
var reply = TunnelResponse()
|
||
reply.code = 1
|
||
reply.message = err.localizedDescription
|
||
|
||
let errorReplyData = try? reply.serializedData()
|
||
completionHandler?(errorReplyData)
|
||
}
|
||
}
|
||
}
|
||
|
||
override func sleep(completionHandler: @escaping () -> Void) {
|
||
// Add code here to get ready to sleep.
|
||
completionHandler()
|
||
}
|
||
|
||
override func wake() {
|
||
// Add code here to wake up.
|
||
}
|
||
|
||
private func handleAppRequest(message: AppRequest) async throws -> Data? {
|
||
guard let contextActor = self.contextActor else {
|
||
throw TunnelError.invalidContext
|
||
}
|
||
|
||
switch message.command {
|
||
case .changeExitNode(let changeExitNode):
|
||
let exitNodeIp = changeExitNode.ip
|
||
do {
|
||
try await contextActor.updateExitNode(exitNodeIp: exitNodeIp)
|
||
var reply = TunnelResponse()
|
||
reply.code = 0
|
||
reply.message = "操作成功"
|
||
return try reply.serializedData()
|
||
|
||
} catch let err {
|
||
var reply = TunnelResponse()
|
||
reply.code = 1
|
||
reply.message = err.localizedDescription
|
||
|
||
return try reply.serializedData()
|
||
}
|
||
case .none:
|
||
var reply = TunnelResponse()
|
||
reply.code = 1
|
||
reply.message = "无效请求"
|
||
return try reply.serializedData()
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
// 获取物理网卡ip地址
|
||
extension PacketTunnelProvider {
|
||
|
||
public static var viaInterface: NetworkInterface? = {
|
||
let interfaces = NetworkInterfaceManager.getInterfaces()
|
||
|
||
return interfaces.first {$0.name == "en0"}
|
||
}()
|
||
}
|