mirror of
https://github.com/StikDebug/StikDebug.git
synced 2026-10-15 20:10:30 +00:00
feat: embed loopback packet tunnel extension
This commit is contained in:
zy860
parent
5fd770c936
commit
2272aa1331
4 changed files with 257 additions and 0 deletions
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@ -9,6 +9,10 @@
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@ -26,6 +30,13 @@
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remoteGlobalIDString = DC6F1D362D94EADD0071B2B6;
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remoteInfo = StikJIT;
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@ -35,6 +46,7 @@
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A1B2C3D40123456789ABC004 /* StikDebugTunnel.appex in Embed Foundation Extensions */,
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@ -47,6 +59,10 @@
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A3B2C3D40123456789ABC004 /* IPv4PacketRewriter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StikJIT/Tunnel/IPv4PacketRewriter.swift; sourceTree = "<group>"; };
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@ -78,6 +94,11 @@
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path = StikJITUITests;
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sourceTree = "<group>";
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};
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A4B2C3D40123456789ABC001 /* StikDebugTunnel */ = {
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isa = PBXFileSystemSynchronizedRootGroup;
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path = StikDebugTunnel;
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sourceTree = "<group>";
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@ -101,6 +122,14 @@
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A1B2C3D40123456789ABC003 /* NetworkExtension.framework in Frameworks */,
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@ -111,6 +140,9 @@
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DC6F1D392D94EADD0071B2B6 /* StikJIT */,
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A4B2C3D40123456789ABC001 /* StikDebugTunnel */,
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A3B2C3D40123456789ABC003 /* StikDebugTunnelConfiguration.swift */,
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A3B2C3D40123456789ABC004 /* IPv4PacketRewriter.swift */,
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DC6F1D4B2D94EADF0071B2B6 /* StikJITTests */,
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DC6F1D552D94EADF0071B2B6 /* StikJITUITests */,
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DC6F1D752D94EB620071B2B6 /* Frameworks */,
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@ -124,6 +156,7 @@
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DC6F1D372D94EADD0071B2B6 /* StikDebug.app */,
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DC6F1D482D94EADF0071B2B6 /* StikDebugTests.xctest */,
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DC6F1D522D94EADF0071B2B6 /* StikDebugUITests.xctest */,
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@ -133,6 +166,7 @@
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children = (
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DC139F6D2DE97EA400F63846 /* WidgetKit.framework */,
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DC139F6F2DE97EA400F63846 /* SwiftUI.framework */,
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A3B2C3D40123456789ABC002 /* NetworkExtension.framework */,
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sourceTree = "<group>";
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@ -152,6 +186,7 @@
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DC6F1D392D94EADD0071B2B6 /* StikJIT */,
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@ -211,6 +246,26 @@
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A4B2C3D40123456789ABC001 /* StikDebugTunnel */,
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name = StikDebugTunnel;
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productName = StikDebugTunnel;
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@ -233,6 +288,9 @@
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CreatedOnToolsVersion = 16.2;
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buildConfigurationList = DC6F1D322D94EADD0071B2B6 /* Build configuration list for PBXProject "StikDebug" */;
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@ -257,6 +315,7 @@
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DC6F1D362D94EADD0071B2B6 /* StikDebug */,
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@ -283,6 +342,13 @@
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@ -307,6 +373,15 @@
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A1B2C3D40123456789ABC002 /* IPv4PacketRewriter.swift in StikDebugTunnel Sources */,
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@ -320,9 +395,58 @@
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@ -707,6 +831,15 @@
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13
StikDebugTunnel/Info.plist
Normal file
13
StikDebugTunnel/Info.plist
Normal file
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@ -0,0 +1,13 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>NSExtension</key>
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<dict>
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<key>NSExtensionPointIdentifier</key>
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<string>com.apple.networkextension.packet-tunnel</string>
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<key>NSExtensionPrincipalClass</key>
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<string>$(PRODUCT_MODULE_NAME).PacketTunnelProvider</string>
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</dict>
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</dict>
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</plist>
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97
StikDebugTunnel/PacketTunnelProvider.swift
Normal file
97
StikDebugTunnel/PacketTunnelProvider.swift
Normal file
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@ -0,0 +1,97 @@
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//
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// PacketTunnelProvider.swift
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// StikDebugTunnel
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//
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import NetworkExtension
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final class PacketTunnelProvider: NEPacketTunnelProvider {
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private var interfaceIP = StikDebugTunnelConfiguration.default.interfaceIP
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private var peerIP = StikDebugTunnelConfiguration.default.peerIP
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private var packetLoopActive = false
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override func startTunnel(
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options: [String: NSObject]?,
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completionHandler: @escaping (Error?) -> Void
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) {
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let providerConfiguration =
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(protocolConfiguration as? NETunnelProviderProtocol)?.providerConfiguration
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if let value = options?[StikDebugTunnelConfiguration.interfaceIPKey] as? String
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?? providerConfiguration?[StikDebugTunnelConfiguration.interfaceIPKey] as? String {
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interfaceIP = value
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}
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if let value = options?[StikDebugTunnelConfiguration.peerIPKey] as? String
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?? providerConfiguration?[StikDebugTunnelConfiguration.peerIPKey] as? String {
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peerIP = value
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}
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let ipv4Settings = NEIPv4Settings(
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addresses: [interfaceIP],
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subnetMasks: ["255.255.255.0"]
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)
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ipv4Settings.includedRoutes = [
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NEIPv4Route(
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destinationAddress: peerIP,
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subnetMask: "255.255.255.255"
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)
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]
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ipv4Settings.excludedRoutes = [.default()]
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let settings = NEPacketTunnelNetworkSettings(tunnelRemoteAddress: peerIP)
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settings.ipv4Settings = ipv4Settings
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setTunnelNetworkSettings(settings) { [weak self] error in
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guard let self else {
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completionHandler(error)
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return
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}
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if let error {
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completionHandler(error)
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return
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}
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packetLoopActive = true
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readPackets()
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completionHandler(nil)
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}
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}
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override func stopTunnel(
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with reason: NEProviderStopReason,
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completionHandler: @escaping () -> Void
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) {
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packetLoopActive = false
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completionHandler()
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}
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private func readPackets() {
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guard packetLoopActive else { return }
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packetFlow.readPackets { [weak self] packets, protocols in
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guard let self, self.packetLoopActive else { return }
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var rewrittenPackets = packets
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for index in rewrittenPackets.indices {
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guard protocols[index].int32Value == AF_INET else { continue }
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rewrittenPackets[index].withUnsafeMutableBytes { rawBuffer in
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guard let baseAddress = rawBuffer.baseAddress else { return }
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var packet = Array(
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UnsafeRawBufferPointer(
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start: baseAddress,
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count: rawBuffer.count
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)
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)
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IPv4PacketRewriter.swapEndpoints(in: &packet)
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packet.withUnsafeBytes { rewrittenBuffer in
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rawBuffer.copyBytes(from: rewrittenBuffer)
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}
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}
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}
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self.packetFlow.writePackets(rewrittenPackets, withProtocols: protocols)
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self.readPackets()
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}
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}
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}
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14
StikDebugTunnel/StikDebugTunnel.entitlements
Normal file
14
StikDebugTunnel/StikDebugTunnel.entitlements
Normal file
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@ -0,0 +1,14 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>com.apple.developer.networking.networkextension</key>
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<array>
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<string>packet-tunnel-provider</string>
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</array>
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<key>com.apple.security.application-groups</key>
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<array>
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<string>group.com.stik.stikdebug</string>
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</array>
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</dict>
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</plist>
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