revert(macos): killswitch 回退 L0(低优先级暂缓)
用户判定 killswitch 优先级低、暂不做: - includeAllNetworks 实测堵死整机网络;退化方案 enforceRoutes+on-demand 几乎等于没做(核心 fail-closed 没拿到),on-demand 还对免费版配额造成 重连 churn —— 性价比低 - VpnChannel.swift 恢复到 L0 stub(setKillSwitch→result(nil)); PacketTunnelProvider.swift 已是原样 - docs §6.5 改为「尝试与暂缓」记录,状态表 macOS 回 L0 - local_test.sh 的 ks-* 漏测子命令保留(将来重拾 killswitch 时可用) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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@@ -33,10 +33,6 @@ final class VpnChannel: NSObject {
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private let statsClient = StatsClient()
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private var manager: NETunnelProviderManager?
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private var sysextDelegate: SysExtActivationDelegate?
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// KillSwitch(断网保护)开关,默认 true 与 Dart AppSettings.killSwitch 默认对齐。
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// 决定 NE 层是否 fail-closed:includeAllNetworks + enforceRoutes(L2 OS 强制)
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// + NEOnDemandRule 常开(L3 开机/掉线窗口也堵)。详见 docs/killswitch-design.html §6.5。
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private var killSwitchEnabled = true
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static func register(with registrar: FlutterPluginRegistrar) {
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let instance = VpnChannel()
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@@ -91,26 +87,8 @@ final class VpnChannel: NSObject {
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case "getActiveOutbound":
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result("auto")
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case "setKillSwitch":
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let on = (call.arguments as? Bool) ?? true
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killSwitchEnabled = on
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vpnLog("setKillSwitch=\(on)")
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// 已装配 manager 则即时重写 NE 配置(includeAllNetworks/enforceRoutes/on-demand);
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// 尚无 manager 时仅缓存,下次 loadOrCreateManager 装配时应用。
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if let mgr = manager {
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Task {
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do {
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try await self.applyKillSwitchConfig(to: mgr)
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vpnLog("setKillSwitch: NE 配置已更新并保存 ✓")
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result(nil)
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} catch {
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let ns = error as NSError
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vpnLog("setKillSwitch: 保存 NE 配置失败 ✗ code=\(ns.code) desc=\(ns.localizedDescription)")
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result(FlutterError(code: "killswitch_failed", message: error.localizedDescription, details: nil))
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}
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}
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} else {
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result(nil)
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}
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// includeAllNetworks / on-demand 实现 kill switch(后续)。
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result(nil)
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default:
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result(FlutterMethodNotImplemented)
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}
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@@ -142,19 +120,6 @@ final class VpnChannel: NSObject {
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}
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private func stop(_ result: @escaping FlutterResult) async {
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// on-demand 常开时直接 stopVPNTunnel 会被 OS 立刻拉回 → 手动断开须先关 on-demand 再断。
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// 下次手动 start() 时 loadOrCreateManager 会按 killSwitchEnabled 重新启用 on-demand。
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if let mgr = manager, mgr.isOnDemandEnabled {
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mgr.isOnDemandEnabled = false
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do {
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try await mgr.saveToPreferences()
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try await mgr.loadFromPreferences()
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vpnLog("stop: 已临时关闭 on-demand(避免手动断开被自动拉回)")
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} catch {
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let ns = error as NSError
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vpnLog("stop: 关闭 on-demand 失败(仍继续断开) code=\(ns.code) desc=\(ns.localizedDescription)")
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}
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}
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manager?.connection.stopVPNTunnel()
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result(nil)
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}
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@@ -170,7 +135,6 @@ final class VpnChannel: NSObject {
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mgr.protocolConfiguration = proto
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mgr.localizedDescription = "Pangolin"
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mgr.isEnabled = true
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configureKillSwitch(on: mgr) // 按 killSwitchEnabled 写入 NE fail-closed 字段
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vpnLog(" saveToPreferences(providerBundleId=\(Self.tunnelBundleId)) …")
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try await mgr.saveToPreferences()
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try await mgr.loadFromPreferences() // 保存后重载,拿到有效 connection
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@@ -178,44 +142,6 @@ final class VpnChannel: NSObject {
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return mgr
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}
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// ── KillSwitch(断网保护)NE 配置 ────────────────────────────────
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// 把当前 killSwitchEnabled 写入 manager 的 NE 字段(不保存,由调用方保存):
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// enforceRoutes=true:隧道 includedRoutes(0.0.0.0/0 默认路由)优先于物理接口,
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// 连接期间所有流量强制走隧道、不从旁路接口泄漏。
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// NEOnDemandRule 常开:OS 在掉线/开机窗口自动拉起隧道,缩小重连缺口。
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// excludeLocalNetworks=true:放行 LAN(打印机/AirPlay 等),不影响防泄漏目标。
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// ⚠️ 刻意不设 includeAllNetworks:它会把「所有」流量(含 sing-box 连服务器的握手、
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// app 调控制面的请求)在隧道建起来前就塞进隧道 → 握手出不去 → 连接失败 + on-demand
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// 死循环 + 整机断网(实测)。要拿「扛进程被杀」那一档须先在扩展内正确放行服务器/
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// 控制面连接,留待真机验证后再评估,见 docs/killswitch-design.html §6.5。
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// enforceRoutes/excludeLocalNetworks 为 macOS 11+ API,Runner 部署目标 10.15 → #available 守卫。
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private func configureKillSwitch(on mgr: NETunnelProviderManager) {
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if let proto = mgr.protocolConfiguration as? NETunnelProviderProtocol {
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proto.includeAllNetworks = false
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if #available(macOS 11.0, *) {
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proto.enforceRoutes = killSwitchEnabled
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proto.excludeLocalNetworks = true
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}
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}
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if killSwitchEnabled {
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let rule = NEOnDemandRuleConnect()
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rule.interfaceTypeMatch = .any
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mgr.onDemandRules = [rule]
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mgr.isOnDemandEnabled = true
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} else {
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mgr.onDemandRules = []
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mgr.isOnDemandEnabled = false
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}
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vpnLog(" killSwitch 配置: enforceRoutes=\(killSwitchEnabled) onDemand=\(killSwitchEnabled) includeAllNetworks=false")
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}
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/// 即时应用 killswitch(改字段 + 保存 + 重载)。供 setKillSwitch 在 manager 已装配时调用。
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private func applyKillSwitchConfig(to mgr: NETunnelProviderManager) async throws {
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configureKillSwitch(on: mgr)
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try await mgr.saveToPreferences()
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try await mgr.loadFromPreferences()
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}
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// 请求系统加载/更新 PacketTunnel System Extension。首启系统会弹「隐私与安全性」
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// 让用户允许;允许后 didFinishWithResult 回来。已是最新则快速完成。
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private func activateSystemExtensionIfNeeded() async throws {
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