diff options
Diffstat (limited to 'tunnel')
24 files changed, 2354 insertions, 65 deletions
diff --git a/tunnel/build.gradle b/tunnel/build.gradle index 74f91f5f..148e89ca 100644 --- a/tunnel/build.gradle +++ b/tunnel/build.gradle @@ -1,16 +1,25 @@ +buildscript { + dependencies { + classpath "com.google.protobuf:protobuf-gradle-plugin:$protobufGradleVersion" + } +} + plugins { id 'com.android.library' + id 'com.google.protobuf' version "$protobufGradleVersion" } version wireguardVersionName group groupName android { - compileSdkVersion 31 + compileSdk 33 + ndkVersion '21.4.7075529' compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } + namespace 'com.wireguard.android.tunnel' defaultConfig { minSdkVersion 21 targetSdkVersion 31 @@ -61,8 +70,54 @@ android { dependencies { implementation "androidx.annotation:annotation:$annotationsVersion" implementation "androidx.collection:collection:$collectionVersion" + implementation "io.grpc:grpc-okhttp:$grpcVersion" + implementation "io.grpc:grpc-protobuf-lite:$grpcVersion" + implementation "io.grpc:grpc-stub:$grpcVersion" compileOnly "com.google.code.findbugs:jsr305:$jsr305Version" + compileOnly "javax.annotation:javax.annotation-api:1.2" testImplementation "junit:junit:$junitVersion" } +protobuf { + protoc { + // You still need protoc like in the non-Android case + artifact = "com.google.protobuf:protoc:$protocVersion" + } + plugins { + grpc { + artifact = "io.grpc:protoc-gen-grpc-java:$grpcVersion" + } + } + generateProtoTasks { + all().each { task -> + task.builtins { + java { + option 'lite' + } + } + task.plugins { + grpc { + option 'lite' + } + } + } + } +} + +afterEvaluate({ project -> + // All custom configurations created by the protobuf plugin, + // are only available at this point. + def protoc = configurations.getByName('protobufToolsLocator_protoc') + + task copyProtoc(type: Copy) { + // Used by tunnel/tools/libwg-go/Makefile run in tools/CMakeLists.txt + from protoc + into "${gradle.gradleUserHomeDir}/caches/protoc-${protocVersion}" + rename 'protoc-.*', 'protoc' + fileMode 0775 + } + + preBuild.dependsOn copyProtoc +}) + apply from: "publish.gradle" diff --git a/tunnel/src/main/AndroidManifest.xml b/tunnel/src/main/AndroidManifest.xml index dc0d6c7f..0d97f321 100644 --- a/tunnel/src/main/AndroidManifest.xml +++ b/tunnel/src/main/AndroidManifest.xml @@ -3,14 +3,13 @@ ~ SPDX-License-Identifier: Apache-2.0 --> -<manifest xmlns:android="http://schemas.android.com/apk/res/android" - package="com.wireguard.android.tunnel"> +<manifest xmlns:android="http://schemas.android.com/apk/res/android"> <application> <service android:name="com.wireguard.android.backend.GoBackend$VpnService" android:permission="android.permission.BIND_VPN_SERVICE" - android:exported="true"> + android:exported="false"> <intent-filter> <action android:name="android.net.VpnService" /> </intent-filter> diff --git a/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java b/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java index 3d0886cf..e8148c04 100644 --- a/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java +++ b/tunnel/src/main/java/com/wireguard/android/backend/GoBackend.java @@ -7,30 +7,81 @@ package com.wireguard.android.backend; import android.content.Context; import android.content.Intent; +import android.content.pm.PackageManager; +import android.net.ConnectivityManager; +import android.net.LinkProperties; +import android.net.LocalSocketAddress; +import android.net.Network; +import android.net.NetworkCapabilities; +import android.net.NetworkRequest; +import android.net.ProxyInfo; +import android.net.Uri; import android.os.Build; import android.os.ParcelFileDescriptor; +import android.os.Process; import android.system.OsConstants; import android.util.Log; +import com.google.protobuf.ByteString; +import com.google.protobuf.InvalidProtocolBufferException; +import com.google.protobuf.Empty; + import com.wireguard.android.backend.BackendException.Reason; import com.wireguard.android.backend.Tunnel.State; +import com.wireguard.android.backend.gen.GetConnectionOwnerUidResponse; +import com.wireguard.android.backend.gen.IpcSetRequest; +import com.wireguard.android.backend.gen.IpcSetResponse; +import com.wireguard.android.backend.gen.LibwgGrpc; +import com.wireguard.android.backend.gen.ReverseRequest; +import com.wireguard.android.backend.gen.ReverseResponse; +import com.wireguard.android.backend.gen.StartHttpProxyRequest; +import com.wireguard.android.backend.gen.StartHttpProxyResponse; +import com.wireguard.android.backend.gen.StopHttpProxyRequest; +import com.wireguard.android.backend.gen.StopHttpProxyResponse; +import com.wireguard.android.backend.gen.TunnelHandle; +import com.wireguard.android.backend.gen.VersionRequest; +import com.wireguard.android.backend.gen.VersionResponse; import com.wireguard.android.util.SharedLibraryLoader; import com.wireguard.config.Config; +import com.wireguard.config.HttpProxy; import com.wireguard.config.InetEndpoint; import com.wireguard.config.InetNetwork; import com.wireguard.config.Peer; import com.wireguard.crypto.Key; import com.wireguard.crypto.KeyFormatException; import com.wireguard.util.NonNullForAll; - +import com.wireguard.util.Resolver; + +import io.grpc.ManagedChannel; +import io.grpc.ManagedChannelBuilder; +import io.grpc.okhttp.OkHttpChannelBuilder; +import io.grpc.stub.StreamObserver; + +import java.time.LocalDateTime; +import java.time.ZoneOffset; +import java.io.BufferedReader; +import java.io.File; +import java.io.FileReader; +import java.io.IOException; import java.net.InetAddress; +import java.net.Inet4Address; +import java.net.Inet6Address; +import java.net.InetSocketAddress; +import java.net.UnknownHostException; +import java.net.URL; +import java.nio.ByteOrder; import java.util.Collections; +import java.util.Optional; import java.util.Set; +import java.util.concurrent.CountDownLatch; import java.util.concurrent.ExecutionException; import java.util.concurrent.FutureTask; import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeoutException; +import java.util.concurrent.atomic.AtomicReference; + +import javax.net.SocketFactory; import androidx.annotation.Nullable; import androidx.collection.ArraySet; @@ -49,6 +100,10 @@ public final class GoBackend implements Backend { @Nullable private Config currentConfig; @Nullable private Tunnel currentTunnel; private int currentTunnelHandle = -1; + private ManagedChannel channel; + private ConnectivityManager connectivityManager; + private ConnectivityManager.NetworkCallback myNetworkCallback = new MyNetworkCallback(); + @Nullable private Network activeNetwork; /** * Public constructor for GoBackend. @@ -58,6 +113,15 @@ public final class GoBackend implements Backend { public GoBackend(final Context context) { SharedLibraryLoader.loadSharedLibrary(context, "wg-go"); this.context = context; + connectivityManager = context.getSystemService(ConnectivityManager.class); + File socketFile = new File(context.getCacheDir(), "libwg.sock"); + String socketName = socketFile.getAbsolutePath(); + Log.i(TAG, "wgStartGrpc: " + wgStartGrpc(socketName)); + ManagedChannelBuilder<?> channelBuilder = ManagedChannelBuilder.forAddress("localhost", 10000).usePlaintext(); + LocalSocketAddress address = new LocalSocketAddress(socketName, LocalSocketAddress.Namespace.FILESYSTEM); + SocketFactory socketFactory = new UnixDomainSocketFactory(address); + ((OkHttpChannelBuilder) channelBuilder).socketFactory(socketFactory); + channel = channelBuilder.build(); } /** @@ -82,6 +146,8 @@ public final class GoBackend implements Backend { private static native String wgVersion(); + private static native int wgStartGrpc(String sockName); + /** * Method to get the names of running tunnels. * @@ -125,10 +191,17 @@ public final class GoBackend implements Backend { Key key = null; long rx = 0; long tx = 0; + long handshakeSec = 0; + int handshakeNSec = 0; for (final String line : config.split("\\n")) { if (line.startsWith("public_key=")) { - if (key != null) - stats.add(key, rx, tx); + if (key != null) { + LocalDateTime handshake = null; + if (handshakeSec > 0) { + handshake = LocalDateTime.ofEpochSecond(handshakeSec, handshakeNSec, ZoneOffset.UTC); + } + stats.add(key, rx, tx, handshake); + } rx = 0; tx = 0; try { @@ -152,10 +225,31 @@ public final class GoBackend implements Backend { } catch (final NumberFormatException ignored) { tx = 0; } + } else if (line.startsWith("last_handshake_time_sec=")) { + if (key == null) + continue; + try { + handshakeSec = Long.parseLong(line.substring(24)); + } catch (final NumberFormatException ignored) { + handshakeSec = 0; + } + } else if (line.startsWith("last_handshake_time_nsec=")) { + if (key == null) + continue; + try { + handshakeNSec = Integer.parseInt(line.substring(25)); + } catch (final NumberFormatException ignored) { + handshakeNSec = 0; + } } } - if (key != null) - stats.add(key, rx, tx); + if (key != null) { + LocalDateTime handshake = null; + if (handshakeSec > 0) { + handshake = LocalDateTime.ofEpochSecond(handshakeSec, handshakeNSec, ZoneOffset.UTC); + } + stats.add(key, rx, tx, handshake); + } return stats; } @@ -166,7 +260,10 @@ public final class GoBackend implements Backend { */ @Override public String getVersion() { - return wgVersion(); + LibwgGrpc.LibwgBlockingStub stub = LibwgGrpc.newBlockingStub(channel); + VersionRequest request = VersionRequest.newBuilder().build(); + VersionResponse resp = stub.version(request); + return resp.getVersion(); } /** @@ -205,6 +302,130 @@ public final class GoBackend implements Backend { return getState(tunnel); } + private int startHttpProxy(Uri pacFileUrl) { + LibwgGrpc.LibwgStub asyncStub = LibwgGrpc.newStub(channel); + LibwgGrpc.LibwgBlockingStub stub = LibwgGrpc.newBlockingStub(channel); + StartHttpProxyRequest.Builder reqBuilder = StartHttpProxyRequest.newBuilder(); + if (pacFileUrl != null && pacFileUrl != Uri.EMPTY) { + reqBuilder.setPacFileUrl(pacFileUrl.toString()); + } + + Thread streamer = new Thread(new Runnable() { + public void run() { + try { + Log.i(TAG, "Before streamReverse"); + streamReverse(asyncStub); + Log.i(TAG, "After streamReverse"); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + }); + + StartHttpProxyRequest req = reqBuilder.build(); + StartHttpProxyResponse resp = stub.startHttpProxy(req); + Log.i(TAG, "Start http proxy listen_port:" + resp.getListenPort() + ", error:" + resp.getError().getMessage()); + streamer.start(); + return resp.getListenPort(); + } + + private void stopHttpProxy() { + LibwgGrpc.LibwgBlockingStub stub = LibwgGrpc.newBlockingStub(channel); + StopHttpProxyRequest req = StopHttpProxyRequest.newBuilder().build(); + StopHttpProxyResponse resp = stub.stopHttpProxy(req); + Log.i(TAG, "Stop http proxy: " + resp.getError().getMessage()); + } + + private static InetSocketAddress toInetSocketAddress(com.wireguard.android.backend.gen.InetSocketAddress sockAddr) { + try { + return new InetSocketAddress(InetAddress.getByAddress(sockAddr.getAddress().getAddress().toByteArray()), sockAddr.getPort()); + } catch (UnknownHostException e) { + throw new RuntimeException(e); + } + } + + private int getConnectionOwnerUid(int protocol, InetSocketAddress local, InetSocketAddress remote) { + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) + return connectivityManager.getConnectionOwnerUid(protocol, local, remote); + else + return Process.INVALID_UID; + } + + private void streamReverse(LibwgGrpc.LibwgStub asyncStub) throws InterruptedException { + Log.i(TAG, "In streamReverse"); + final CountDownLatch finishLatch = new CountDownLatch(1); + final AtomicReference<StreamObserver<ReverseRequest>> atomicRequestObserver = new AtomicReference<StreamObserver<ReverseRequest>>(); + // Throwable failed = null; + + StreamObserver<ReverseResponse> responseObserver = new StreamObserver<ReverseResponse>() { + @Override + public void onNext(ReverseResponse resp) { + try { + String pkg = ""; + int uid = getConnectionOwnerUid(resp.getUid().getProtocol(), toInetSocketAddress(resp.getUid().getLocal()), toInetSocketAddress(resp.getUid().getRemote())); + if (uid != Process.INVALID_UID) { + PackageManager pm = context.getPackageManager(); + pkg = pm.getNameForUid(uid); + String[] pkgs = pm.getPackagesForUid(uid); + Log.i(TAG, "reverse onNext uid:" + uid + " package:" + pkg); + if (pkgs != null) { + for (int i=0; i < pkgs.length; i++) { + Log.i(TAG, "getPackagesForUid() = " + pkgs[i]); + } + } + } else { + Log.i(TAG, "Connection not found"); + } + + ReverseRequest req = ReverseRequest.newBuilder() + .setUid(GetConnectionOwnerUidResponse.newBuilder() + .setUid(uid) + .setPackage(pkg != null ? pkg: "") + .build()) + .build(); + + io.grpc.Context.current().fork().run(new Runnable() { + public void run() { + atomicRequestObserver.get().onNext(req); + } + }); + } catch (RuntimeException ex) { + Log.i(TAG, "onNext " + ex); + throw ex; + } + } + + @Override + public void onError(Throwable t) { + // failed = t; + Log.i(TAG, "streamReverse error: " + t); + finishLatch.countDown(); + } + + @Override + public void onCompleted() { + Log.i(TAG, "streamReverse completed"); + finishLatch.countDown(); + } + }; + StreamObserver<ReverseRequest> requestObserver = asyncStub.reverse(responseObserver); + atomicRequestObserver.set(requestObserver); + + // Mark the end of requests + //requestObserver.onCompleted(); + + //requestObserver.onNext(ReverseRequest.getDefaultInstance()); + + Log.i(TAG, "Waiting streamReverse"); + // Receiving happens asynchronously + finishLatch.await(); + + // if (failed != null) { + // throw new RuntimeException(failed); + // } + Log.i(TAG, "Exit streamReverse"); + } + private void setStateInternal(final Tunnel tunnel, @Nullable final Config config, final State state) throws Exception { Log.i(TAG, "Bringing tunnel " + tunnel.getName() + ' ' + state); @@ -237,13 +458,19 @@ public final class GoBackend implements Backend { } + activeNetwork = connectivityManager.getActiveNetwork(); + if (!connectivityManager.getNetworkCapabilities(activeNetwork).hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)) { + Log.w(TAG, "VPN network is active, null activeNetwork"); + activeNetwork = null; + } + final Resolver resolver = new Resolver(activeNetwork, connectivityManager.getLinkProperties(activeNetwork)); dnsRetry: for (int i = 0; i < DNS_RESOLUTION_RETRIES; ++i) { // Pre-resolve IPs so they're cached when building the userspace string for (final Peer peer : config.getPeers()) { final InetEndpoint ep = peer.getEndpoint().orElse(null); if (ep == null) continue; - if (ep.getResolved().orElse(null) == null) { + if (ep.getResolved(resolver, true).orElse(null) == null) { if (i < DNS_RESOLUTION_RETRIES - 1) { Log.w(TAG, "DNS host \"" + ep.getHost() + "\" failed to resolve; trying again"); Thread.sleep(1000); @@ -256,7 +483,7 @@ public final class GoBackend implements Backend { } // Build config - final String goConfig = config.toWgUserspaceString(); + final String goConfig = config.toWgUserspaceString(resolver); // Create the vpn tunnel with android API final VpnService.Builder builder = service.getBuilder(); @@ -299,6 +526,22 @@ public final class GoBackend implements Backend { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) service.setUnderlyingNetworks(null); + Optional<HttpProxy> proxy = config.getInterface().getHttpProxy(); + if (proxy.isPresent()) { + ProxyInfo pi = proxy.get().getProxyInfo(); + Uri pacFileUrl = pi.getPacFileUrl(); + + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { + if (pacFileUrl != null && pacFileUrl != Uri.EMPTY) { + int listenPort = startHttpProxy(pacFileUrl); + ProxyInfo localPi = ProxyInfo.buildDirectProxy("localhost", listenPort); + builder.setHttpProxy(localPi); + } else { + builder.setHttpProxy(pi); + } + } + } + builder.setBlocking(true); try (final ParcelFileDescriptor tun = builder.establish()) { if (tun == null) @@ -314,6 +557,9 @@ public final class GoBackend implements Backend { service.protect(wgGetSocketV4(currentTunnelHandle)); service.protect(wgGetSocketV6(currentTunnelHandle)); + + NetworkRequest req = new NetworkRequest.Builder().addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN).build(); + connectivityManager.requestNetwork(req, myNetworkCallback); } else { if (currentTunnelHandle == -1) { Log.w(TAG, "Tunnel already down"); @@ -323,6 +569,9 @@ public final class GoBackend implements Backend { currentTunnel = null; currentTunnelHandle = -1; currentConfig = null; + stopHttpProxy(); + connectivityManager.unregisterNetworkCallback(myNetworkCallback); + activeNetwork = null; wgTurnOff(handleToClose); } @@ -385,10 +634,14 @@ public final class GoBackend implements Backend { @Override public void onDestroy() { if (owner != null) { + owner.stopHttpProxy(); final Tunnel tunnel = owner.currentTunnel; if (tunnel != null) { - if (owner.currentTunnelHandle != -1) + if (owner.currentTunnelHandle != -1) { + owner.connectivityManager.unregisterNetworkCallback(owner.myNetworkCallback); + owner.activeNetwork = null; wgTurnOff(owner.currentTunnelHandle); + } owner.currentTunnel = null; owner.currentTunnelHandle = -1; owner.currentConfig = null; @@ -414,4 +667,27 @@ public final class GoBackend implements Backend { this.owner = owner; } } + + private class MyNetworkCallback extends ConnectivityManager.NetworkCallback { + @Override + public void onAvailable(Network network) { + activeNetwork = network; + Log.w(TAG, "onAvailable: " + activeNetwork); + } + + @Override + public void onLinkPropertiesChanged(Network network, LinkProperties linkProperties) { + Log.w(TAG, "onLinkPropertiesChanged: " + network + " is default:" + (network.equals(activeNetwork))); + if (network.equals(activeNetwork) && currentConfig != null && currentTunnelHandle > -1) { + final Resolver resolver = new Resolver(network, linkProperties); + final String goConfig = currentConfig.toWgUserspaceStringWithChangedEndpoints(resolver); + Log.w(TAG, "is default network, config:" + goConfig); + + LibwgGrpc.LibwgBlockingStub stub = LibwgGrpc.newBlockingStub(channel); + TunnelHandle tunnel = TunnelHandle.newBuilder().setHandle(currentTunnelHandle).build(); + IpcSetRequest request = IpcSetRequest.newBuilder().setTunnel(tunnel).setConfig(goConfig).build(); + IpcSetResponse resp = stub.ipcSet(request); + } + } + } } diff --git a/tunnel/src/main/java/com/wireguard/android/backend/LocalSocketAdapter.java b/tunnel/src/main/java/com/wireguard/android/backend/LocalSocketAdapter.java new file mode 100644 index 00000000..bf027ae1 --- /dev/null +++ b/tunnel/src/main/java/com/wireguard/android/backend/LocalSocketAdapter.java @@ -0,0 +1,325 @@ +/* + */ +package com.wireguard.android.backend; + +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.net.Socket; +import java.net.SocketAddress; +import java.net.SocketException; +import java.net.SocketImplFactory; +import java.net.SocketOptions; +import java.nio.channels.SocketChannel; +import java.util.Vector; +import android.net.LocalSocket; +import android.net.LocalSocketAddress; +import android.util.Log; + +/** + * Adaptor allows using a LocalSocket as a Socket. + */ +final class LocalSocketAdapter extends Socket { + private final LocalSocketAddress address; + private final LocalSocket unix; + private final SocketAddress localAddress; + private InetSocketAddress inetSocketAddress; + private InputStream is; + private OutputStream os; + + LocalSocketAdapter(LocalSocketAddress address) { + this.address = address; + this.localAddress = new InetSocketAddress(0); + unix = new LocalSocket(); + } + + LocalSocketAdapter(LocalSocketAddress address, InetSocketAddress inetAddress) { + this(address); + this.inetSocketAddress = inetAddress; + } + + private void throwUnsupportedOperationException() { + Log.i("helloworld", "Unsupported: " + Log.getStackTraceString(new Exception())); + throw new UnsupportedOperationException(); + } + + @Override + public void bind (SocketAddress bindpoint) { + throwUnsupportedOperationException(); + } + + @Override + public void close() throws IOException { + unix.close(); + } + + @Override public void connect(SocketAddress endpoint) throws IOException { + this.inetSocketAddress = (InetSocketAddress) endpoint; + try { + unix.connect(address); + } catch (IOException e) { + Log.i("helloworld", "Error: " + e.toString()); + throw e; + } + } + + @Override + public void connect(SocketAddress endpoint, int timeout) throws IOException { + this.inetSocketAddress = (InetSocketAddress) endpoint; + unix.connect(address, timeout); + } + + @Override + public SocketChannel getChannel() { + throwUnsupportedOperationException(); + return null; + } + + @Override public InetAddress getInetAddress() { + return inetSocketAddress.getAddress(); + } + + @Override + public InputStream getInputStream() throws IOException { + is = unix.getInputStream(); + return is; + } + + @Override + public boolean getKeepAlive() { + throwUnsupportedOperationException(); + return false; + } + + @Override + public InetAddress getLocalAddress() { + throwUnsupportedOperationException(); + return null; + } + + @Override + public int getLocalPort() { + throwUnsupportedOperationException(); + return 0; + } + + @Override + public SocketAddress getLocalSocketAddress() { + //throwUnsupportedOperationException(); + return localAddress; + } + + @Override + public boolean getOOBInline() { + throwUnsupportedOperationException(); + return false; + } + + @Override + public OutputStream getOutputStream() throws IOException { + if (os != null) + return os; + + OutputStream unixOs = unix.getOutputStream(); + os = new OutputStream() { + @Override + public void close() throws IOException { + // LocalSocket's default implementation closes the socket, + // which leaves readers of thes InputStream hanging. + // Instead shutdown input (and output) to release readers. + LocalSocketAdapter.this.shutdownInput(); + LocalSocketAdapter.this.shutdownOutput(); + } + + @Override + public void write (byte[] b) throws IOException { + unixOs.write(b); + } + + @Override + public void write (byte[] b, int off, int len) throws IOException { + unixOs.write(b, off, len); + } + + @Override + public void write (int b) throws IOException { + unixOs.write(b); + } + }; + return os; + } + + @Override + public int getPort() { + return inetSocketAddress.getPort(); + } + + @Override + public int getReceiveBufferSize() throws SocketException { + try { + return unix.getReceiveBufferSize(); + } catch (IOException e) { + throw new SocketException(e.getMessage()); + } + } + + @Override + public SocketAddress getRemoteSocketAddress() { + return inetSocketAddress; + } + + @Override + public boolean getReuseAddress() { + throwUnsupportedOperationException(); + return false; + } + + @Override + public int getSendBufferSize() throws SocketException { + try { + return unix.getSendBufferSize(); + } catch (IOException e) { + throw new SocketException(e.getMessage()); + } + } + + @Override + public int getSoLinger() { + throwUnsupportedOperationException(); + return 0; + } + + @Override + public int getSoTimeout() throws SocketException { + try { + return unix.getSoTimeout(); + } catch (IOException e) { + throw new SocketException(e.getMessage()); + } + } + + @Override + public boolean getTcpNoDelay() { + throwUnsupportedOperationException(); + return false; + } + + @Override + public int getTrafficClass() { + throwUnsupportedOperationException(); + return 0; + } + + @Override + public boolean isBound() { + return unix.isBound(); + } + + @Override + public boolean isClosed() { + return unix.isClosed(); + } + + @Override + public boolean isConnected() { + return unix.isConnected(); + } + + @Override + public boolean isInputShutdown() { + return unix.isInputShutdown(); + } + + @Override + public boolean isOutputShutdown() { + return unix.isOutputShutdown(); + } + + @Override + public void sendUrgentData (int data) { + throwUnsupportedOperationException(); + } + + @Override + public void setKeepAlive (boolean on) { + throwUnsupportedOperationException(); + } + + @Override + public void setOOBInline (boolean on) { + throwUnsupportedOperationException(); + } + + @Override + public void setPerformancePreferences (int connectionTime, + int latency, + int bandwidth) { + throwUnsupportedOperationException(); + } + + @Override + public void setReceiveBufferSize(int size) throws SocketException { + try { + unix.setReceiveBufferSize(size); + } catch (IOException e) { + throw new SocketException(e.getMessage()); + } + } + + @Override + public void setReuseAddress (boolean on) { + throwUnsupportedOperationException(); + } + + @Override + public void setSendBufferSize(int size) throws SocketException { + try { + unix.setSendBufferSize(size); + } catch (IOException e) { + throw new SocketException(e.getMessage()); + } + } + + @Override + public void setSoLinger (boolean on, + int linger) { + throwUnsupportedOperationException(); + } + + @Override + public void setSoTimeout(int timeout) throws SocketException { + try { + unix.setSoTimeout(timeout); + } catch (IOException e) { + throw new SocketException(e.getMessage()); + } + } + + @Override + public void setTcpNoDelay (boolean on) { + // Not relevant for local sockets. + } + + @Override + public void setTrafficClass (int tc) { + throwUnsupportedOperationException(); + } + + @Override + public void shutdownInput() throws IOException { + unix.shutdownInput(); + } + + @Override + public void shutdownOutput() throws IOException { + unix.shutdownOutput(); + } + + @Override + public String toString() { + return unix.toString(); + } +} diff --git a/tunnel/src/main/java/com/wireguard/android/backend/Statistics.java b/tunnel/src/main/java/com/wireguard/android/backend/Statistics.java index 5d658019..322e766f 100644 --- a/tunnel/src/main/java/com/wireguard/android/backend/Statistics.java +++ b/tunnel/src/main/java/com/wireguard/android/backend/Statistics.java @@ -11,6 +11,7 @@ import android.util.Pair; import com.wireguard.crypto.Key; import com.wireguard.util.NonNullForAll; +import java.time.LocalDateTime; import java.util.HashMap; import java.util.Map; @@ -19,7 +20,19 @@ import java.util.Map; */ @NonNullForAll public class Statistics { - private final Map<Key, Pair<Long, Long>> peerBytes = new HashMap<>(); + private static class Stat { + long rx; + long tx; + LocalDateTime lastHandshake; + + Stat(long rx, long tx, LocalDateTime lastHandshake) { + this.rx = rx; + this.tx = tx; + this.lastHandshake = lastHandshake; + } + } + + private final Map<Key, Stat> peerBytes = new HashMap<>(); private long lastTouched = SystemClock.elapsedRealtime(); Statistics() { @@ -34,8 +47,8 @@ public class Statistics { * @param tx The transmitted traffic for the {@link com.wireguard.config.Peer} referenced by * the provided {@link Key}. This value is in bytes. */ - void add(final Key key, final long rx, final long tx) { - peerBytes.put(key, Pair.create(rx, tx)); + void add(final Key key, final long rx, final long tx, final LocalDateTime lastHandshake) { + peerBytes.put(key, new Stat(rx, tx, lastHandshake)); lastTouched = SystemClock.elapsedRealtime(); } @@ -56,10 +69,10 @@ public class Statistics { * @return a long representing the number of bytes received by this peer. */ public long peerRx(final Key peer) { - final Pair<Long, Long> rxTx = peerBytes.get(peer); - if (rxTx == null) + final Stat stat = peerBytes.get(peer); + if (stat == null) return 0; - return rxTx.first; + return stat.rx; } /** @@ -70,10 +83,17 @@ public class Statistics { * @return a long representing the number of bytes transmitted by this peer. */ public long peerTx(final Key peer) { - final Pair<Long, Long> rxTx = peerBytes.get(peer); - if (rxTx == null) + final Stat stat = peerBytes.get(peer); + if (stat == null) return 0; - return rxTx.second; + return stat.tx; + } + + public LocalDateTime peerLastHandshake(final Key peer) { + final Stat stat = peerBytes.get(peer); + if (stat == null) + return null; + return stat.lastHandshake; } /** @@ -93,8 +113,8 @@ public class Statistics { */ public long totalRx() { long rx = 0; - for (final Pair<Long, Long> val : peerBytes.values()) { - rx += val.first; + for (final Stat val : peerBytes.values()) { + rx += val.rx; } return rx; } @@ -106,8 +126,8 @@ public class Statistics { */ public long totalTx() { long tx = 0; - for (final Pair<Long, Long> val : peerBytes.values()) { - tx += val.second; + for (final Stat val : peerBytes.values()) { + tx += val.tx; } return tx; } diff --git a/tunnel/src/main/java/com/wireguard/android/backend/UnixDomainSocketFactory.java b/tunnel/src/main/java/com/wireguard/android/backend/UnixDomainSocketFactory.java new file mode 100644 index 00000000..427a19f1 --- /dev/null +++ b/tunnel/src/main/java/com/wireguard/android/backend/UnixDomainSocketFactory.java @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2018 Square, Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.wireguard.android.backend; + +import java.io.File; +import java.io.IOException; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.net.Socket; +import javax.net.SocketFactory; +import android.net.LocalSocketAddress; + +/** Impersonate TCP-style SocketFactory over UNIX domain sockets. */ +public final class UnixDomainSocketFactory extends SocketFactory { + private final LocalSocketAddress address; + + public UnixDomainSocketFactory(LocalSocketAddress address) { + this.address = address; + } + + @Override public Socket createSocket() throws IOException { + return new LocalSocketAdapter(address); + } + + @Override public Socket createSocket(String host, int port) throws IOException { + Socket result = createSocket(); + result.connect(new InetSocketAddress(host, port)); + return result; + } + + @Override public Socket createSocket( + String host, int port, InetAddress localHost, int localPort) throws IOException { + return createSocket(host, port); + } + + @Override public Socket createSocket(InetAddress host, int port) throws IOException { + Socket result = createSocket(); + result.connect(new InetSocketAddress(host, port)); + return result; + } + + @Override public Socket createSocket( + InetAddress host, int port, InetAddress localAddress, int localPort) throws IOException { + return createSocket(host, port); + } +} diff --git a/tunnel/src/main/java/com/wireguard/android/backend/WgQuickBackend.java b/tunnel/src/main/java/com/wireguard/android/backend/WgQuickBackend.java index 3121c996..d0dc6a46 100644 --- a/tunnel/src/main/java/com/wireguard/android/backend/WgQuickBackend.java +++ b/tunnel/src/main/java/com/wireguard/android/backend/WgQuickBackend.java @@ -93,7 +93,7 @@ public final class WgQuickBackend implements Backend { if (parts.length != 3) continue; try { - stats.add(Key.fromBase64(parts[0]), Long.parseLong(parts[1]), Long.parseLong(parts[2])); + stats.add(Key.fromBase64(parts[0]), Long.parseLong(parts[1]), Long.parseLong(parts[2]), null); } catch (final Exception ignored) { } } diff --git a/tunnel/src/main/java/com/wireguard/config/BadConfigException.java b/tunnel/src/main/java/com/wireguard/config/BadConfigException.java index 8766ce51..e5a94e89 100644 --- a/tunnel/src/main/java/com/wireguard/config/BadConfigException.java +++ b/tunnel/src/main/java/com/wireguard/config/BadConfigException.java @@ -8,6 +8,8 @@ package com.wireguard.config; import com.wireguard.crypto.KeyFormatException; import com.wireguard.util.NonNullForAll; +import java.net.MalformedURLException; + import androidx.annotation.Nullable; @NonNullForAll @@ -44,6 +46,12 @@ public class BadConfigException extends Exception { } public BadConfigException(final Section section, final Location location, + @Nullable final CharSequence text, + final MalformedURLException cause) { + this(section, location, Reason.INVALID_VALUE, text, cause); + } + + public BadConfigException(final Section section, final Location location, final ParseException cause) { this(section, location, Reason.INVALID_VALUE, cause.getText(), cause); } @@ -73,6 +81,7 @@ public class BadConfigException extends Exception { ENDPOINT("Endpoint"), EXCLUDED_APPLICATIONS("ExcludedApplications"), INCLUDED_APPLICATIONS("IncludedApplications"), + HTTP_PROXY("HttpProxy"), LISTEN_PORT("ListenPort"), MTU("MTU"), PERSISTENT_KEEPALIVE("PersistentKeepalive"), diff --git a/tunnel/src/main/java/com/wireguard/config/Config.java b/tunnel/src/main/java/com/wireguard/config/Config.java index 807ebec8..ea05e9c8 100644 --- a/tunnel/src/main/java/com/wireguard/config/Config.java +++ b/tunnel/src/main/java/com/wireguard/config/Config.java @@ -9,6 +9,7 @@ import com.wireguard.config.BadConfigException.Location; import com.wireguard.config.BadConfigException.Reason; import com.wireguard.config.BadConfigException.Section; import com.wireguard.util.NonNullForAll; +import com.wireguard.util.Resolver; import java.io.BufferedReader; import java.io.IOException; @@ -173,12 +174,19 @@ public final class Config { * * @return the {@code Config} represented as a series of "key=value" lines */ - public String toWgUserspaceString() { + public String toWgUserspaceString(Resolver resolver) { final StringBuilder sb = new StringBuilder(); sb.append(interfaze.toWgUserspaceString()); sb.append("replace_peers=true\n"); for (final Peer peer : peers) - sb.append(peer.toWgUserspaceString()); + sb.append(peer.toWgUserspaceString(resolver)); + return sb.toString(); + } + + public String toWgUserspaceStringWithChangedEndpoints(Resolver resolver) { + final StringBuilder sb = new StringBuilder(); + for (final Peer peer : peers) + sb.append(peer.toWgUserspaceStringWithChangedEndpoint(resolver)); return sb.toString(); } diff --git a/tunnel/src/main/java/com/wireguard/config/HttpProxy.java b/tunnel/src/main/java/com/wireguard/config/HttpProxy.java new file mode 100644 index 00000000..d45914f8 --- /dev/null +++ b/tunnel/src/main/java/com/wireguard/config/HttpProxy.java @@ -0,0 +1,78 @@ +/* + * Copyright © 2022 WireGuard LLC. All Rights Reserved. + * SPDX-License-Identifier: Apache-2.0 + */ + +package com.wireguard.config; + +import com.wireguard.config.BadConfigException.Location; +import com.wireguard.config.BadConfigException.Section; +import com.wireguard.util.NonNullForAll; + +import java.net.MalformedURLException; +import java.net.URL; + +import android.net.ProxyInfo; +import android.net.Uri; + +@NonNullForAll +public final class HttpProxy { + public static final int DEFAULT_PROXY_PORT = 8080; + + private ProxyInfo pi; + + protected HttpProxy(ProxyInfo pi) { + this.pi = pi; + } + + public ProxyInfo getProxyInfo() { + return pi; + } + + public String getHost() { + return pi.getHost(); + } + + public Uri getPacFileUrl() { + return pi.getPacFileUrl(); + } + + public int getPort() { + return pi.getPort(); + } + + public static HttpProxy parse(final String httpProxy) throws BadConfigException { + try { + if (httpProxy.startsWith("pac:")) { + return new HttpProxy(ProxyInfo.buildPacProxy(Uri.parse(httpProxy.substring(4)))); + } else { + final String urlStr; + if (!httpProxy.contains("://")) { + urlStr = "http://" + httpProxy; + } else { + urlStr = httpProxy; + } + URL url = new URL(urlStr); + return new HttpProxy(ProxyInfo.buildDirectProxy(url.getHost(), url.getPort() <= 0 ? DEFAULT_PROXY_PORT : url.getPort())); + } + } catch (final MalformedURLException e) { + throw new BadConfigException(Section.INTERFACE, Location.HTTP_PROXY, httpProxy, e); + } + } + + @Override + public String toString() { + final StringBuilder sb = new StringBuilder(); + if (pi.getPacFileUrl() != null && pi.getPacFileUrl() != Uri.EMPTY) + sb.append("pac:").append(pi.getPacFileUrl()); + else { + sb.append("http://").append(pi.getHost()).append(':'); + if (pi.getPort() <= 0) + sb.append(DEFAULT_PROXY_PORT); + else + sb.append(pi.getPort()); + } + + return sb.toString(); + } +} diff --git a/tunnel/src/main/java/com/wireguard/config/InetEndpoint.java b/tunnel/src/main/java/com/wireguard/config/InetEndpoint.java index 66855f11..abd888c8 100644 --- a/tunnel/src/main/java/com/wireguard/config/InetEndpoint.java +++ b/tunnel/src/main/java/com/wireguard/config/InetEndpoint.java @@ -6,6 +6,7 @@ package com.wireguard.config; import com.wireguard.util.NonNullForAll; +import com.wireguard.util.Resolver; import java.net.Inet4Address; import java.net.InetAddress; @@ -87,24 +88,34 @@ public final class InetEndpoint { * * @return the resolved endpoint, or {@link Optional#empty()} */ - public Optional<InetEndpoint> getResolved() { - if (isResolved) + public Optional<InetEndpoint> getResolved(Resolver resolver) { + return getResolved(resolver, false, false); + } + + public Optional<InetEndpoint> getResolved(Resolver resolver, Boolean force) { + return getResolved(resolver, force, false); + } + + public Optional<InetEndpoint> getResolvedIfChanged(Resolver resolver) { + return getResolved(resolver, true, true); + } + + public Optional<InetEndpoint> getResolved(Resolver resolver, Boolean force, Boolean ifChanged) { + if (!force && isResolved) return Optional.of(this); synchronized (lock) { //TODO(zx2c4): Implement a real timeout mechanism using DNS TTL - if (Duration.between(lastResolution, Instant.now()).toMinutes() > 1) { + if (force || Duration.between(lastResolution, Instant.now()).toMinutes() > 1) { try { - // Prefer v4 endpoints over v6 to work around DNS64 and IPv6 NAT issues. - final InetAddress[] candidates = InetAddress.getAllByName(host); - InetAddress address = candidates[0]; - for (final InetAddress candidate : candidates) { - if (candidate instanceof Inet4Address) { - address = candidate; - break; - } - } - resolved = new InetEndpoint(address.getHostAddress(), true, port); + InetAddress address = resolver.resolve(host); + InetEndpoint resolvedNow = new InetEndpoint(address.getHostAddress(), true, port); lastResolution = Instant.now(); + + if (ifChanged && resolvedNow.equals(resolved)) { + return Optional.empty(); + } + + resolved = resolvedNow; } catch (final UnknownHostException e) { resolved = null; } diff --git a/tunnel/src/main/java/com/wireguard/config/Interface.java b/tunnel/src/main/java/com/wireguard/config/Interface.java index 694f313a..a4fa2a19 100644 --- a/tunnel/src/main/java/com/wireguard/config/Interface.java +++ b/tunnel/src/main/java/com/wireguard/config/Interface.java @@ -46,6 +46,7 @@ public final class Interface { private final KeyPair keyPair; private final Optional<Integer> listenPort; private final Optional<Integer> mtu; + private final Optional<HttpProxy> httpProxy; private Interface(final Builder builder) { // Defensively copy to ensure immutability even if the Builder is reused. @@ -57,6 +58,7 @@ public final class Interface { keyPair = Objects.requireNonNull(builder.keyPair, "Interfaces must have a private key"); listenPort = builder.listenPort; mtu = builder.mtu; + httpProxy = builder.httpProxy; } /** @@ -92,6 +94,9 @@ public final class Interface { case "mtu": builder.parseMtu(attribute.getValue()); break; + case "httpproxy": + builder.parseHttpProxy(attribute.getValue()); + break; case "privatekey": builder.parsePrivateKey(attribute.getValue()); break; @@ -115,7 +120,8 @@ public final class Interface { && includedApplications.equals(other.includedApplications) && keyPair.equals(other.keyPair) && listenPort.equals(other.listenPort) - && mtu.equals(other.mtu); + && mtu.equals(other.mtu) + && httpProxy.equals(other.httpProxy); } /** @@ -195,6 +201,15 @@ public final class Interface { return mtu; } + /** + * Returns the HTTP proxy used for the WireGuard interface. + * + * @return the HTTP proxy, or {@code Optional.empty()} if none is configured + */ + public Optional<HttpProxy> getHttpProxy() { + return httpProxy; + } + @Override public int hashCode() { int hash = 1; @@ -205,6 +220,7 @@ public final class Interface { hash = 31 * hash + keyPair.hashCode(); hash = 31 * hash + listenPort.hashCode(); hash = 31 * hash + mtu.hashCode(); + hash = 31 * hash + httpProxy.hashCode(); return hash; } @@ -244,6 +260,7 @@ public final class Interface { sb.append("IncludedApplications = ").append(Attribute.join(includedApplications)).append('\n'); listenPort.ifPresent(lp -> sb.append("ListenPort = ").append(lp).append('\n')); mtu.ifPresent(m -> sb.append("MTU = ").append(m).append('\n')); + httpProxy.ifPresent(p -> sb.append("HttpProxy = ").append(p).append('\n')); sb.append("PrivateKey = ").append(keyPair.getPrivateKey().toBase64()).append('\n'); return sb.toString(); } @@ -279,6 +296,8 @@ public final class Interface { private Optional<Integer> listenPort = Optional.empty(); // Defaults to not present. private Optional<Integer> mtu = Optional.empty(); + // Defaults to not present. + private Optional<HttpProxy> httpProxy = Optional.empty(); public Builder addAddress(final InetNetwork address) { addresses.add(address); @@ -391,6 +410,10 @@ public final class Interface { } } + public Builder parseHttpProxy(final String httpProxy) throws BadConfigException { + return setHttpProxy(HttpProxy.parse(httpProxy)); + } + public Builder parsePrivateKey(final String privateKey) throws BadConfigException { try { return setKeyPair(new KeyPair(Key.fromBase64(privateKey))); @@ -419,5 +442,13 @@ public final class Interface { this.mtu = mtu == 0 ? Optional.empty() : Optional.of(mtu); return this; } + + public Builder setHttpProxy(final HttpProxy httpProxy) throws BadConfigException { + if (httpProxy == null) + throw new BadConfigException(Section.INTERFACE, Location.HTTP_PROXY, + Reason.INVALID_VALUE, String.valueOf(httpProxy)); + this.httpProxy = httpProxy == null ? Optional.empty() : Optional.of(httpProxy); + return this; + } } } diff --git a/tunnel/src/main/java/com/wireguard/config/Peer.java b/tunnel/src/main/java/com/wireguard/config/Peer.java index 9b87b397..3cf5dc15 100644 --- a/tunnel/src/main/java/com/wireguard/config/Peer.java +++ b/tunnel/src/main/java/com/wireguard/config/Peer.java @@ -11,6 +11,7 @@ import com.wireguard.config.BadConfigException.Section; import com.wireguard.crypto.Key; import com.wireguard.crypto.KeyFormatException; import com.wireguard.util.NonNullForAll; +import com.wireguard.util.Resolver; import java.util.Collection; import java.util.Collections; @@ -190,18 +191,26 @@ public final class Peer { * * @return the {@code Peer} represented as a series of "key=value" lines */ - public String toWgUserspaceString() { + public String toWgUserspaceString(Resolver resolver) { final StringBuilder sb = new StringBuilder(); // The order here is important: public_key signifies the beginning of a new peer. sb.append("public_key=").append(publicKey.toHex()).append('\n'); for (final InetNetwork allowedIp : allowedIps) sb.append("allowed_ip=").append(allowedIp).append('\n'); - endpoint.flatMap(InetEndpoint::getResolved).ifPresent(ep -> sb.append("endpoint=").append(ep).append('\n')); + endpoint.flatMap(ep -> ep.getResolved(resolver)).ifPresent(ep -> sb.append("endpoint=").append(ep).append('\n')); persistentKeepalive.ifPresent(pk -> sb.append("persistent_keepalive_interval=").append(pk).append('\n')); preSharedKey.ifPresent(psk -> sb.append("preshared_key=").append(psk.toHex()).append('\n')); return sb.toString(); } + public String toWgUserspaceStringWithChangedEndpoint(Resolver resolver) { + final StringBuilder sb = new StringBuilder(); + // The order here is important: public_key signifies the beginning of a new peer. + sb.append("public_key=").append(publicKey.toHex()).append('\n'); + endpoint.flatMap(ep -> ep.getResolved(resolver, true)).ifPresent(ep -> sb.append("endpoint=").append(ep).append('\n')); + return sb.toString(); + } + @SuppressWarnings("UnusedReturnValue") public static final class Builder { // See wg(8) diff --git a/tunnel/src/main/java/com/wireguard/util/Resolver.java b/tunnel/src/main/java/com/wireguard/util/Resolver.java new file mode 100644 index 00000000..f401b584 --- /dev/null +++ b/tunnel/src/main/java/com/wireguard/util/Resolver.java @@ -0,0 +1,134 @@ +/* + * Copyright © 2023 WireGuard LLC. All Rights Reserved. + * SPDX-License-Identifier: Apache-2.0 + */ + +package com.wireguard.util; + +import java.io.IOException; +import java.net.DatagramSocket; +import java.net.Inet4Address; +import java.net.Inet6Address; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.net.SocketException; +import java.net.UnknownHostException; + +import android.net.IpPrefix; +import android.net.LinkProperties; +import android.net.Network; +import android.util.Log; + +import androidx.annotation.Nullable; + +@NonNullForAll +public class Resolver { + private static final String TAG = "WireGuard/Resolver"; + @Nullable private final Network network; + @Nullable private final LinkProperties linkProps; + @Nullable private IpPrefix nat64Prefix; + + public Resolver(Network network, LinkProperties linkProps) { + this.network = network; + this.linkProps = linkProps; + if (linkProps != null) { + this.nat64Prefix = linkProps.getNat64Prefix(); + } + } + + static boolean isULA(Inet6Address addr) { + byte[] raw = addr.getAddress(); + return ((raw[0] & 0xfe) == 0xfc); + } + + boolean isWithinNAT64Prefix(Inet6Address address) { + if (nat64Prefix == null) + return false; + + int prefixLength = nat64Prefix.getPrefixLength(); + byte[] rawAddr = address.getAddress(); + byte[] rawPrefix = nat64Prefix.getRawAddress(); + + for (int i=0; i < prefixLength/8; i++) { + if (rawAddr[i] != rawPrefix[i]) + return false; + } + + return true; + } + + boolean isPreferredIPv6(Inet6Address local, Inet6Address remote) { + if (linkProps == null) { + // Prefer IPv4 if there are not link properties that can + // be tested. + return false; + } + + // * Prefer IPv4 if local or remote address is ULA + // * Prefer IPv4 if remote IPv6 is within NAT64 prefix. + // * Otherwise prefer IPv6 + boolean isLocalULA = isULA(local); + boolean isRemoteULA = isULA(remote); + + if (isLocalULA || isRemoteULA) { + return false; + } + + if (isWithinNAT64Prefix(remote)) { + return false; + } + + return true; + } + + public InetAddress resolve(String host) throws UnknownHostException { + final InetAddress[] candidates = network != null ? network.getAllByName(host) : InetAddress.getAllByName(host); + InetAddress address = candidates[0]; + for (final InetAddress candidate : candidates) { + DatagramSocket sock; + + try { + sock = new DatagramSocket(); + if (network != null) { + network.bindSocket(sock); + } + } catch (SocketException e) { + // Return first candidate as fallback + Log.w(TAG, "DatagramSocket failed, fallback to: \"" + address); + return address; + } catch (IOException e) { + // Return first candidate as fallback + Log.w(TAG, "BindSocket failed, fallback to: \"" + address); + return address; + } + + sock.connect(candidate, 51820); + + if (sock.getLocalAddress().isAnyLocalAddress()) { + // Connect didn't find a local address. + Log.w(TAG, "No local address"); + continue; + } + + Log.w(TAG, "Local address: " + sock.getLocalAddress()); + + if (candidate instanceof Inet4Address) { + // Accept IPv4 as preferred address. + address = candidate; + break; + } + + Inet6Address local = (Inet6Address)sock.getLocalAddress(); + InetSocketAddress remoteSockAddr = (InetSocketAddress)sock.getRemoteSocketAddress(); + Inet6Address remote = (Inet6Address)remoteSockAddr.getAddress(); + sock.close(); + + if (isPreferredIPv6(local, remote)) { + address = candidate; + break; + } + } + Log.w(TAG, "Resolved \"" + host + "\" to: " + address); + return address; + } +} diff --git a/tunnel/src/main/proto/libwg.proto b/tunnel/src/main/proto/libwg.proto new file mode 100644 index 00000000..e633ea46 --- /dev/null +++ b/tunnel/src/main/proto/libwg.proto @@ -0,0 +1,103 @@ +syntax = "proto3"; + +option java_multiple_files = true; +option java_package = 'com.wireguard.android.backend.gen'; +option java_outer_classname = "LibwgProto"; +option java_generic_services = true; +option go_package = 'golang.zx2c4.com/wireguard/android/gen'; + +package api; + +service Libwg { + rpc StopGrpc(StopGrpcRequest) returns (StopGrpcResponse); + rpc Version(VersionRequest) returns (VersionResponse); + rpc StartHttpProxy(StartHttpProxyRequest) returns (StartHttpProxyResponse); + rpc StopHttpProxy(StopHttpProxyRequest) returns (StopHttpProxyResponse); + rpc Reverse(stream ReverseRequest) returns (stream ReverseResponse); + rpc IpcSet(IpcSetRequest) returns (IpcSetResponse); +} + +message TunnelHandle { int32 handle = 1; } + +message Error { + enum Code { + NO_ERROR = 0; + UNSPECIFIED = 1; + INVALID_PROTOCOL_BUFFER = 2; + INVALID_RESPONSE = 3; + } + Code code = 1; + string message = 2; +} + +message InetAddress { + bytes address = 1; +} + +message InetSocketAddress { + InetAddress address = 1; + uint32 port = 2; +} + +message StopGrpcRequest { +} + +message StopGrpcResponse { +} + +message VersionRequest { +} + +message VersionResponse { + string version = 1; +} + +message StartHttpProxyRequest { + string pacFileUrl = 1; +} + +message StartHttpProxyResponse { + uint32 listen_port = 1; + Error error = 2; +} + +message StopHttpProxyRequest { +} + +message StopHttpProxyResponse { + Error error = 1; +} + +message ReverseRequest { + oneof response { + GetConnectionOwnerUidResponse uid = 1; + } +} + +message ReverseResponse { + oneof request { + GetConnectionOwnerUidRequest uid = 1; + } +} + +message GetConnectionOwnerUidRequest { + // ConnectivityManager.getConnectionOwnerUid(int protocol, + // InetSocketAddress local, InetSocketAddress remote) + int32 protocol = 1; + InetSocketAddress local = 2; + InetSocketAddress remote = 3; +} + +message GetConnectionOwnerUidResponse { + int32 uid = 1; + string package = 2; // context.getPackageManager().getNameForUid() +} + +message IpcSetRequest { + TunnelHandle tunnel = 1; + string config = 2; +} + +message IpcSetResponse { + Error error = 1; +} diff --git a/tunnel/tools/libwg-go/.gitignore b/tunnel/tools/libwg-go/.gitignore index d1638636..d69ee823 100644 --- a/tunnel/tools/libwg-go/.gitignore +++ b/tunnel/tools/libwg-go/.gitignore @@ -1 +1,2 @@ -build/
\ No newline at end of file +build/ +/gen/ diff --git a/tunnel/tools/libwg-go/Makefile b/tunnel/tools/libwg-go/Makefile index a2aefef7..ba3ab19e 100644 --- a/tunnel/tools/libwg-go/Makefile +++ b/tunnel/tools/libwg-go/Makefile @@ -19,13 +19,21 @@ export CC := $(ANDROID_C_COMPILER) export GOARCH := $(NDK_GO_ARCH_MAP_$(ANDROID_ARCH_NAME)) export GOOS := android export CGO_ENABLED := 1 +export GOPATH ?= $(HOME)/go -GO_VERSION := 1.18.2 +GO_VERSION := 1.19.5 GO_PLATFORM := $(shell uname -s | tr '[:upper:]' '[:lower:]')-$(NDK_GO_ARCH_MAP_$(shell uname -m)) GO_TARBALL := go$(GO_VERSION).$(GO_PLATFORM).tar.gz -GO_HASH_darwin-amd64 := 1f5f539ce0baa8b65f196ee219abf73a7d9cf558ba9128cc0fe4833da18b04f2 -GO_HASH_darwin-arm64 := 6c7df9a2405f09aa9bab55c93c9c4ce41d3e58127d626bc1825ba5d0a0045d5c -GO_HASH_linux-amd64 := e54bec97a1a5d230fc2f9ad0880fcbabb5888f30ed9666eca4a91c5a32e86cbc +GO_HASH_darwin-amd64 := 03e8323f63043d13c309a4ebbfc0b0e6c65b835ad4384b445f1a0c39d2c335d7 +GO_HASH_darwin-arm64 := 4fbbf81242a1c6cdd7e505684c12422570b9c628108d021d4354fed07d79d443 +GO_HASH_linux-amd64 := 36519702ae2fd573c9869461990ae550c8c0d955cd28d2827a6b159fda81ff95 + +PROTOC_VERSION := 3.20.1 +PROTOC_GEN_GO := $(GOPATH)/bin/protoc-gen-go +PROTOC := $(GRADLE_USER_HOME)/caches/protoc-$(PROTOC_VERSION)/protoc +PROTODIR = $(CURDIR)/../../src/main/proto +PROTO_INCLUDEDIR = $(CURDIR)/../../build/extracted-include-protos/debug +PBDIR = $(GOPATH)/pkg/mod default: $(DESTDIR)/libwg-go.so @@ -45,8 +53,25 @@ $(BUILDDIR)/go-$(GO_VERSION)/.prepared: $(GRADLE_USER_HOME)/caches/golang/$(GO_T patch -p1 -f -N -r- -d "$(dir $@)" < goruntime-boottime-over-monotonic.diff && \ touch "$@"' +$(PROTOC_GEN_GO): export GOARCH := +$(PROTOC_GEN_GO): export GOOS := +$(PROTOC_GEN_GO): export PATH := $(BUILDDIR)/go-$(GO_VERSION)/bin/:$(PATH) +$(PROTOC_GEN_GO): $(BUILDDIR)/go-$(GO_VERSION)/.prepared Makefile + go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.28 + go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2 + +gen/%.pb.go: export PATH := $(GOPATH)/bin:$(PATH) +gen/%.pb.go: $(PROTODIR)/%.proto $(BUILDDIR)/go-$(GO_VERSION)/.prepared $(PROTOC_GEN_GO) + test -d gen || mkdir gen + $(PROTOC) -I $(PROTODIR) -I $(PROTO_INCLUDEDIR) --go_out=paths=source_relative:./gen $< + +gen/%_grpc.pb.go: export PATH := $(GOPATH)/bin:$(PATH) +gen/%_grpc.pb.go: $(PROTODIR)/%.proto $(BUILDDIR)/go-$(GO_VERSION)/.prepared $(PROTOC_GEN_GO) + test -d gen || mkdir gen + $(PROTOC) -I $(PROTODIR) -I $(PROTO_INCLUDEDIR) --go-grpc_out=./gen --go-grpc_opt=paths=source_relative $< + $(DESTDIR)/libwg-go.so: export PATH := $(BUILDDIR)/go-$(GO_VERSION)/bin/:$(PATH) -$(DESTDIR)/libwg-go.so: $(BUILDDIR)/go-$(GO_VERSION)/.prepared go.mod +$(DESTDIR)/libwg-go.so: $(BUILDDIR)/go-$(GO_VERSION)/.prepared go.mod api-android.go http-proxy.go service.go gen/libwg.pb.go gen/libwg_grpc.pb.go jni.c go build -tags linux -ldflags="-X golang.zx2c4.com/wireguard/ipc.socketDirectory=/data/data/$(ANDROID_PACKAGE_NAME)/cache/wireguard" -v -trimpath -o "$@" -buildmode c-shared .DELETE_ON_ERROR: diff --git a/tunnel/tools/libwg-go/api-android.go b/tunnel/tools/libwg-go/api-android.go index d47c5d76..0ab80be9 100644 --- a/tunnel/tools/libwg-go/api-android.go +++ b/tunnel/tools/libwg-go/api-android.go @@ -48,10 +48,16 @@ func (l AndroidLogger) Printf(format string, args ...interface{}) { type TunnelHandle struct { device *device.Device uapi net.Listener + logger *device.Logger } var tunnelHandles map[int32]TunnelHandle +func GetTunnel(handle int32) (tunnelHandle TunnelHandle, ok bool) { + tunnelHandle, ok = tunnelHandles[handle] + return +} + func init() { tunnelHandles = make(map[int32]TunnelHandle) signals := make(chan os.Signal) @@ -208,20 +214,40 @@ func wgGetConfig(tunnelHandle int32) *C.char { //export wgVersion func wgVersion() *C.char { + return C.CString(Version()) +} + +func Version() string { info, ok := debug.ReadBuildInfo() if !ok { - return C.CString("unknown") + return "unknown" } for _, dep := range info.Deps { if dep.Path == "golang.zx2c4.com/wireguard" { parts := strings.Split(dep.Version, "-") if len(parts) == 3 && len(parts[2]) == 12 { - return C.CString(parts[2][:7]) + return parts[2][:7] } - return C.CString(dep.Version) + return dep.Version } } - return C.CString("unknown") + return "unknown" +} + +//export wgStartGrpc +func wgStartGrpc(sock_path string) C.int{ + tag := cstring("WireGuard/GoBackend/gRPC") + logger := &device.Logger{ + Verbosef: AndroidLogger{level: C.ANDROID_LOG_DEBUG, tag: tag}.Printf, + Errorf: AndroidLogger{level: C.ANDROID_LOG_ERROR, tag: tag}.Printf, + } + + res, errmsg := StartGrpc(sock_path, logger) + if res < 0 { + logger.Verbosef("wgStartGrpc: %v (%v)", errmsg, res) + } + + return C.int(res) } func main() {} diff --git a/tunnel/tools/libwg-go/go.mod b/tunnel/tools/libwg-go/go.mod index e64d2fb1..49fe3780 100644 --- a/tunnel/tools/libwg-go/go.mod +++ b/tunnel/tools/libwg-go/go.mod @@ -1,14 +1,21 @@ module golang.zx2c4.com/wireguard/android -go 1.18 +go 1.19 require ( + github.com/elazarl/goproxy v0.0.0-20211114080932-d06c3be7c11b + golang.org/x/net v0.0.0-20220516155154-20f960328961 golang.org/x/sys v0.0.0-20220513210249-45d2b4557a2a golang.zx2c4.com/wireguard v0.0.0-20220407013110-ef5c587f782d + google.golang.org/grpc v1.42.0-dev.0.20211020220737-f00baa6c3c84 + google.golang.org/protobuf v1.27.1 + gopkg.in/olebedev/go-duktape.v3 v3.0.0-20210326210528-650f7c854440 ) require ( + github.com/golang/protobuf v1.5.2 // indirect golang.org/x/crypto v0.0.0-20220516162934-403b01795ae8 // indirect - golang.org/x/net v0.0.0-20220516155154-20f960328961 // indirect + golang.org/x/text v0.3.7 // indirect golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect + google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f // indirect ) diff --git a/tunnel/tools/libwg-go/go.sum b/tunnel/tools/libwg-go/go.sum index 633bbf7a..1e0a1352 100644 --- a/tunnel/tools/libwg-go/go.sum +++ b/tunnel/tools/libwg-go/go.sum @@ -1,10 +1,162 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc= +github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk= 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h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/tunnel/tools/libwg-go/goruntime-boottime-over-monotonic.diff b/tunnel/tools/libwg-go/goruntime-boottime-over-monotonic.diff index 5cbc2256..52369503 100644 --- a/tunnel/tools/libwg-go/goruntime-boottime-over-monotonic.diff +++ b/tunnel/tools/libwg-go/goruntime-boottime-over-monotonic.diff @@ -144,18 +144,18 @@ index fd69ee70a5..ff6bc8355b 100644 MOVD R1, R15 // R15 is unchanged by C code MOVD g_m(g), R21 // R21 = m diff --git a/src/runtime/sys_linux_s390x.s b/src/runtime/sys_linux_s390x.s -index c15a1d5364..f52c4d5098 100644 +index 1448670b91..7d2ee3231c 100644 --- a/src/runtime/sys_linux_s390x.s +++ b/src/runtime/sys_linux_s390x.s -@@ -207,7 +207,7 @@ TEXT runtime·walltime1(SB),NOSPLIT,$16 +@@ -296,7 +296,7 @@ fallback: RET - TEXT runtime·nanotime1(SB),NOSPLIT,$16 -- MOVW $1, R2 // CLOCK_MONOTONIC -+ MOVW $7, R2 // CLOCK_BOOTTIME - MOVD $tp-16(SP), R3 - MOVW $SYS_clock_gettime, R1 - SYSCALL + TEXT runtime·nanotime1(SB),NOSPLIT,$32-8 +- MOVW $1, R2 // CLOCK_MONOTONIC ++ MOVW $7, R2 // CLOCK_BOOTTIME + + MOVD R15, R7 // Backup stack pointer + -- 2.30.1 diff --git a/tunnel/tools/libwg-go/http-proxy.go b/tunnel/tools/libwg-go/http-proxy.go new file mode 100644 index 00000000..a44aaac6 --- /dev/null +++ b/tunnel/tools/libwg-go/http-proxy.go @@ -0,0 +1,702 @@ +package main + +import ( + "fmt" + "io" + "net" + "net/http" + "net/netip" + "net/url" + "strings" + "sync" + + "github.com/elazarl/goproxy" + + "golang.zx2c4.com/wireguard/device" + + net_proxy "golang.org/x/net/proxy" + + "gopkg.in/olebedev/go-duktape.v3" +) + +const ( + // Imported from Firefox' ProxyAutoConfig.cpp + // https://searchfox.org/mozilla-central/source/netwerk/base/ProxyAutoConfig.cpp + // This Source Code Form is subject to the terms of the Mozilla Public + // License, v. 2.0. If a copy of the MPL was not distributed with this + // file, You can obtain one at http://mozilla.org/MPL/2.0/. + ASCII_PAC_UTILS = "function dnsDomainIs(host, domain) {\n" + + " return (host.length >= domain.length &&\n" + + " host.substring(host.length - domain.length) == domain);\n" + + "}\n" + + "" + + "function dnsDomainLevels(host) {\n" + + " return host.split('.').length - 1;\n" + + "}\n" + + "" + + "function isValidIpAddress(ipchars) {\n" + + " var matches = " + + "/^(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$/.exec(ipchars);\n" + + " if (matches == null) {\n" + + " return false;\n" + + " } else if (matches[1] > 255 || matches[2] > 255 || \n" + + " matches[3] > 255 || matches[4] > 255) {\n" + + " return false;\n" + + " }\n" + + " return true;\n" + + "}\n" + + "" + + "function convert_addr(ipchars) {\n" + + " var bytes = ipchars.split('.');\n" + + " var result = ((bytes[0] & 0xff) << 24) |\n" + + " ((bytes[1] & 0xff) << 16) |\n" + + " ((bytes[2] & 0xff) << 8) |\n" + + " (bytes[3] & 0xff);\n" + + " return result;\n" + + "}\n" + + "" + + "function isInNet(ipaddr, pattern, maskstr) {\n" + + " if (!isValidIpAddress(pattern) || !isValidIpAddress(maskstr)) {\n" + + " return false;\n" + + " }\n" + + " if (!isValidIpAddress(ipaddr)) {\n" + + " ipaddr = dnsResolve(ipaddr);\n" + + " if (ipaddr == null) {\n" + + " return false;\n" + + " }\n" + + " }\n" + + " var host = convert_addr(ipaddr);\n" + + " var pat = convert_addr(pattern);\n" + + " var mask = convert_addr(maskstr);\n" + + " return ((host & mask) == (pat & mask));\n" + + " \n" + + "}\n" + + "" + + "function isPlainHostName(host) {\n" + + " return (host.search('(\\\\.)|:') == -1);\n" + + "}\n" + + "" + + "function isResolvable(host) {\n" + + " var ip = dnsResolve(host);\n" + + " return (ip != null);\n" + + "}\n" + + "" + + "function localHostOrDomainIs(host, hostdom) {\n" + + " return (host == hostdom) ||\n" + + " (hostdom.lastIndexOf(host + '.', 0) == 0);\n" + + "}\n" + + "" + + "function shExpMatch(url, pattern) {\n" + + " pattern = pattern.replace(/\\./g, '\\\\.');\n" + + " pattern = pattern.replace(/\\*/g, '.*');\n" + + " pattern = pattern.replace(/\\?/g, '.');\n" + + " var newRe = new RegExp('^'+pattern+'$');\n" + + " return newRe.test(url);\n" + + "}\n" + + "" + + "var wdays = {SUN: 0, MON: 1, TUE: 2, WED: 3, THU: 4, FRI: 5, SAT: 6};\n" + + "var months = {JAN: 0, FEB: 1, MAR: 2, APR: 3, MAY: 4, JUN: 5, JUL: 6, " + + "AUG: 7, SEP: 8, OCT: 9, NOV: 10, DEC: 11};\n" + + "" + + "function weekdayRange() {\n" + + " function getDay(weekday) {\n" + + " if (weekday in wdays) {\n" + + " return wdays[weekday];\n" + + " }\n" + + " return -1;\n" + + " }\n" + + " var date = new Date();\n" + + " var argc = arguments.length;\n" + + " var wday;\n" + + " if (argc < 1)\n" + + " return false;\n" + + " if (arguments[argc - 1] == 'GMT') {\n" + + " argc--;\n" + + " wday = date.getUTCDay();\n" + + " } else {\n" + + " wday = date.getDay();\n" + + " }\n" + + " var wd1 = getDay(arguments[0]);\n" + + " var wd2 = (argc == 2) ? getDay(arguments[1]) : wd1;\n" + + " return (wd1 == -1 || wd2 == -1) ? false\n" + + " : (wd1 <= wd2) ? (wd1 <= wday && wday " + + "<= wd2)\n" + + " : (wd2 >= wday || wday " + + ">= wd1);\n" + + "}\n" + + "" + + "function dateRange() {\n" + + " function getMonth(name) {\n" + + " if (name in months) {\n" + + " return months[name];\n" + + " }\n" + + " return -1;\n" + + " }\n" + + " var date = new Date();\n" + + " var argc = arguments.length;\n" + + " if (argc < 1) {\n" + + " return false;\n" + + " }\n" + + " var isGMT = (arguments[argc - 1] == 'GMT');\n" + + "\n" + + " if (isGMT) {\n" + + " argc--;\n" + + " }\n" + + " // function will work even without explict handling of this case\n" + + " if (argc == 1) {\n" + + " var tmp = parseInt(arguments[0]);\n" + + " if (isNaN(tmp)) {\n" + + " return ((isGMT ? date.getUTCMonth() : date.getMonth()) ==\n" + + " getMonth(arguments[0]));\n" + + " } else if (tmp < 32) {\n" + + " return ((isGMT ? date.getUTCDate() : date.getDate()) == " + + "tmp);\n" + + " } else { \n" + + " return ((isGMT ? date.getUTCFullYear() : date.getFullYear()) " + + "==\n" + + " tmp);\n" + + " }\n" + + " }\n" + + " var year = date.getFullYear();\n" + + " var date1, date2;\n" + + " date1 = new Date(year, 0, 1, 0, 0, 0);\n" + + " date2 = new Date(year, 11, 31, 23, 59, 59);\n" + + " var adjustMonth = false;\n" + + " for (var i = 0; i < (argc >> 1); i++) {\n" + + " var tmp = parseInt(arguments[i]);\n" + + " if (isNaN(tmp)) {\n" + + " var mon = getMonth(arguments[i]);\n" + + " date1.setMonth(mon);\n" + + " } else if (tmp < 32) {\n" + + " adjustMonth = (argc <= 2);\n" + + " date1.setDate(tmp);\n" + + " } else {\n" + + " date1.setFullYear(tmp);\n" + + " }\n" + + " }\n" + + " for (var i = (argc >> 1); i < argc; i++) {\n" + + " var tmp = parseInt(arguments[i]);\n" + + " if (isNaN(tmp)) {\n" + + " var mon = getMonth(arguments[i]);\n" + + " date2.setMonth(mon);\n" + + " } else if (tmp < 32) {\n" + + " date2.setDate(tmp);\n" + + " } else {\n" + + " date2.setFullYear(tmp);\n" + + " }\n" + + " }\n" + + " if (adjustMonth) {\n" + + " date1.setMonth(date.getMonth());\n" + + " date2.setMonth(date.getMonth());\n" + + " }\n" + + " if (isGMT) {\n" + + " var tmp = date;\n" + + " tmp.setFullYear(date.getUTCFullYear());\n" + + " tmp.setMonth(date.getUTCMonth());\n" + + " tmp.setDate(date.getUTCDate());\n" + + " tmp.setHours(date.getUTCHours());\n" + + " tmp.setMinutes(date.getUTCMinutes());\n" + + " tmp.setSeconds(date.getUTCSeconds());\n" + + " date = tmp;\n" + + " }\n" + + " return (date1 <= date2) ? (date1 <= date) && (date <= date2)\n" + + " : (date2 >= date) || (date >= date1);\n" + + "}\n" + + "" + + "function timeRange() {\n" + + " var argc = arguments.length;\n" + + " var date = new Date();\n" + + " var isGMT= false;\n" + + "" + + " if (argc < 1) {\n" + + " return false;\n" + + " }\n" + + " if (arguments[argc - 1] == 'GMT') {\n" + + " isGMT = true;\n" + + " argc--;\n" + + " }\n" + + "\n" + + " var hour = isGMT ? date.getUTCHours() : date.getHours();\n" + + " var date1, date2;\n" + + " date1 = new Date();\n" + + " date2 = new Date();\n" + + "\n" + + " if (argc == 1) {\n" + + " return (hour == arguments[0]);\n" + + " } else if (argc == 2) {\n" + + " return ((arguments[0] <= hour) && (hour <= arguments[1]));\n" + + " } else {\n" + + " switch (argc) {\n" + + " case 6:\n" + + " date1.setSeconds(arguments[2]);\n" + + " date2.setSeconds(arguments[5]);\n" + + " case 4:\n" + + " var middle = argc >> 1;\n" + + " date1.setHours(arguments[0]);\n" + + " date1.setMinutes(arguments[1]);\n" + + " date2.setHours(arguments[middle]);\n" + + " date2.setMinutes(arguments[middle + 1]);\n" + + " if (middle == 2) {\n" + + " date2.setSeconds(59);\n" + + " }\n" + + " break;\n" + + " default:\n" + + " throw 'timeRange: bad number of arguments'\n" + + " }\n" + + " }\n" + + "\n" + + " if (isGMT) {\n" + + " date.setFullYear(date.getUTCFullYear());\n" + + " date.setMonth(date.getUTCMonth());\n" + + " date.setDate(date.getUTCDate());\n" + + " date.setHours(date.getUTCHours());\n" + + " date.setMinutes(date.getUTCMinutes());\n" + + " date.setSeconds(date.getUTCSeconds());\n" + + " }\n" + + " return (date1 <= date2) ? (date1 <= date) && (date <= date2)\n" + + " : (date2 >= date) || (date >= date1);\n" + + "\n" + + "}\n" +) + +type HttpProxy struct { + listener net.Listener + tlsListener net.Listener + logger *device.Logger + addrPort netip.AddrPort + tlsAddrPort netip.AddrPort + ctx *duktape.Context + defaultProxy *goproxy.ProxyHttpServer + uidRequest chan UidRequest + handlers []*HttpHandler +} + +func NewHttpProxy(uidRequest chan UidRequest, logger *device.Logger) *HttpProxy { + logger.Verbosef("NewHttpProxy") + return &HttpProxy{ + listener: nil, + logger: logger, + uidRequest: uidRequest, + handlers: make([]*HttpHandler, 0, 2), + } +} + +var ( + ASCII_PAC_UTILS_NAMES = []string{"dnsDomainIs", "dnsDomainLevels", "isValidIpAddress", "convert_addr", "isInNet", "isPlainHostName", "isResolvable", "localHostOrDomainIs", "shExpMatch", "weekdayRange", "dateRange", "timeRange"} +) + +func (p *HttpProxy) GetAddrPort() netip.AddrPort { + return p.addrPort +} + +type Logger struct { + logger *device.Logger +} + +func (l *Logger) Printf(format string, v ...interface{}) { + l.logger.Verbosef(format, v...) +} + +func (p *HttpProxy) newGoProxy(cat, proxyUrl string) (*goproxy.ProxyHttpServer, error) { + proxy := goproxy.NewProxyHttpServer() + proxy.Logger = &Logger{logger: p.logger} + proxy.Verbose = true + if cat == "SOCKS5" { + socksDialer, err := net_proxy.SOCKS5("tcp", proxyUrl, nil, nil) + if err != nil { + return nil, err + } + proxy.Tr.Dial = socksDialer.Dial + } + proxy.NonproxyHandler = http.HandlerFunc(func (w http.ResponseWriter, req *http.Request) { + if req.Host == "" { + fmt.Fprintln(w, "Cannot handle requests without Host header, e.g., HTTP 1.0") + return + } + req.URL.Scheme = "http" + req.URL.Host = req.Host + proxy.ServeHTTP(w, req) + }) + + if cat == "PROXY" { + proxy.Tr.Proxy = func(req *http.Request) (*url.URL, error) { + return url.Parse(proxyUrl) + } + proxy.ConnectDial = proxy.NewConnectDialToProxy(proxyUrl) + } + + return proxy, nil +} + +func FindProxyForURL(ctx *duktape.Context, url, host string, logger *device.Logger) (res string, err error) { + if !ctx.GetGlobalString("FindProxyForURL") { + ctx.Pop() + return "", fmt.Errorf("FindProxyForURL not found") + } + + ctx.PushString(url) + ctx.PushString(host) + + res = "DIRECT" + logger.Verbosef("Before pcall") + r := ctx.Pcall(2) + logger.Verbosef("After pcall") + if r == 0 { + res = ctx.GetString(-1) + } else if ctx.IsError(-1) { + ctx.GetPropString(-1, "stack") + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } else { + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } + ctx.Pop() + return +} + + +func FindProxyForPkg(ctx *duktape.Context, pkg string, logger *device.Logger) (res string, err error) { + if !ctx.GetGlobalString("FindProxyForPkg") { + ctx.Pop() + return "", fmt.Errorf("FindProxyForPkg not found") + } + + ctx.PushString(pkg) + + res = "DIRECT" + logger.Verbosef("Before pcall") + r := ctx.Pcall(1) + logger.Verbosef("After pcall") + if r == 0 { + res = ctx.GetString(-1) + } else if ctx.IsError(-1) { + ctx.GetPropString(-1, "stack") + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } else { + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } + ctx.Pop() + return +} + +func newPacBodyCtx(body string, logger *device.Logger) *duktape.Context { + ctx := duktape.New() + ctx.PushGlobalGoFunction("dnsResolve", + func(ctx *duktape.Context) int { + // Check stack + host := ctx.GetString(-1) + ctx.Pop() + ips, err := net.LookupIP(host) + if err != nil { + return 0 + } + + for _, ip := range(ips) { + ipStr := string(ip) + if strings.Contains(ipStr, ".") { + // Found IPv4 + ctx.PushString(ipStr) + return 1 + } + } + // No IPv4 + return 0 + }) + + ctx.PevalString(ASCII_PAC_UTILS) + logger.Verbosef("ASCII_PAC_UTILS result is: %v stack:%v", ctx.GetType(-1), ctx.GetTop()) + ctx.Pop() + + ctx.PevalString(string(body)) + logger.Verbosef("result is: %v stack:%v", ctx.GetType(-1), ctx.GetTop()) + ctx.Pop() + FindProxyForURL(ctx, "http://www.jabra.se/", "www.jabra.se", logger) + return ctx +} + +func (p *HttpProxy) newPacFileCtx(pacFileUrl *url.URL) (*duktape.Context, error) { + var pacFileBody = "" + if pacFileUrl == nil { + return nil, nil + } + + resp, err := http.Get(pacFileUrl.String()) + p.logger.Verbosef("pacFile: %v, %v", resp, err) + + if err == nil { + defer resp.Body.Close() + ct, ok := resp.Header["Content-Type"] + if ok && len(ct) == 1 && ct[0] == "application/x-ns-proxy-autoconfig" { + body, err := io.ReadAll(resp.Body) + if err == nil { + pacFileBody = string(body) + return newPacBodyCtx(pacFileBody, p.logger), nil + } + } + } + + return nil, err +} + +func (p *HttpProxy) SetPacFileUrl(pacFileUrl *url.URL) error { + ctx, err := p.newPacFileCtx(pacFileUrl) + if err != nil { + return err + } + + for _, handler := range(p.handlers) { + handler.setPacCtx(ctx) + } + + if p.ctx != nil { + p.ctx.Destroy() + } + p.ctx = ctx + return nil +} + +func (p *HttpProxy) Start() (listen_port uint16, err error) { + p.logger.Verbosef("HttpProxy.Start()") + listen_port = 0 + + + proxyMap := make(map[string]*goproxy.ProxyHttpServer) + + p.defaultProxy, err = p.newGoProxy("", "") + if err != nil { + return + } + proxyMap[""] = p.defaultProxy + + listen_port, handler, err := p.startRegularProxy(proxyMap) + if err != nil { + return + } + p.handlers = append(p.handlers, handler) + + return +} + +func (p *HttpProxy) startRegularProxy(proxyMap map[string]*goproxy.ProxyHttpServer) (listen_port uint16, handler *HttpHandler, err error) { + p.listener, err = net.Listen("tcp", "[::]:") + if err != nil { + return + } + + p.addrPort, err = netip.ParseAddrPort(p.listener.Addr().String()) + if err != nil { + return + } + + listen_port = p.addrPort.Port() + + handler = NewHttpHandler(p, p.defaultProxy, proxyMap, p.logger) + + go http.Serve(NewListener(p.listener, handler, p.logger), handler) + return +} + +func (p *HttpProxy) Stop() { + if p.listener != nil { + p.logger.Verbosef("Close: %v", p.listener) + p.listener.Close() +// p.listener = nil + } + if p.tlsListener != nil { + p.logger.Verbosef("Close: %v", p.tlsListener) + p.tlsListener.Close() +// p.tlsListener = nil + } + if p.ctx != nil { + p.ctx.DestroyHeap() + p.ctx = nil + } +} + +type HttpHandler struct { + p *HttpProxy + defaultProxy *goproxy.ProxyHttpServer + logger *device.Logger + remoteAddrPkgMapMutex sync.RWMutex + remoteAddrPkgMap map[string]*goproxy.ProxyHttpServer + uidRequest chan UidRequest + ctx *duktape.Context + proxyMap map[string]*goproxy.ProxyHttpServer // FIXME include type in map key +} + +func NewHttpHandler(p *HttpProxy, defaultProxy *goproxy.ProxyHttpServer, proxyMap map[string]*goproxy.ProxyHttpServer, logger *device.Logger) *HttpHandler{ + h := &HttpHandler{ + p: p, + defaultProxy: defaultProxy, + logger: logger, + remoteAddrPkgMapMutex: sync.RWMutex{}, + remoteAddrPkgMap: make(map[string]*goproxy.ProxyHttpServer), + uidRequest: p.uidRequest, + proxyMap: proxyMap, + } + + return h +} + +// TODO fix multi-threading +func (h *HttpHandler) setPacCtx(ctx *duktape.Context) { + h.ctx = ctx +} + +func (h *HttpHandler) addConnToProxyMap(c net.Conn) error { + h.logger.Verbosef("Accept: %v -> %v", c.RemoteAddr().String(), c.LocalAddr().String()) + local, err := netip.ParseAddrPort(c.RemoteAddr().String()) + if err != nil { + return fmt.Errorf("Bad local address (%v): %v", c.RemoteAddr(), err) + } + // Remove IPv6 zone, NOOP on IPv4 + local = netip.AddrPortFrom(local.Addr().WithZone(""), local.Port()) + + remote, err := netip.ParseAddrPort(c.LocalAddr().String()) + if err != nil { + return fmt.Errorf("Bad remote address (%v): %v", c.LocalAddr(), err) + } + + h.logger.Verbosef("uidRequest: %v -> %v", local, remote) + addrPortPair := AddrPortPair{local: local, remote: remote} + retCh := make(chan string) + h.uidRequest <- UidRequest{Data: addrPortPair, RetCh: retCh} + + select { + case pkg := <-retCh: + h.logger.Verbosef("uidResponse: '%v'", pkg) + + proxy, ok := h.proxyMap[pkg] + if !ok { + proxy, err = h.findProxyForPkg(pkg) + if err != nil { + return err + } + } + + if proxy != nil { + h.remoteAddrPkgMapMutex.Lock() + h.remoteAddrPkgMap[c.RemoteAddr().String()] = proxy + h.remoteAddrPkgMapMutex.Unlock() + } + } + + return nil +} + +func (h *HttpHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) { + h.remoteAddrPkgMapMutex.Lock() + proxy, ok := h.remoteAddrPkgMap[req.RemoteAddr] + if ok && proxy != nil { + delete(h.remoteAddrPkgMap, req.RemoteAddr) + h.remoteAddrPkgMapMutex.Unlock() + + proxyStr := "nil" + proxyUrl, err := proxy.Tr.Proxy(req) + if err == nil && proxyUrl != nil { + proxyStr = proxyUrl.String() + } + h.logger.Verbosef("ServeHTTP remote:%s proxy:%v", req.RemoteAddr, proxyStr) + + proxy.ServeHTTP(rw, req) + } else { + h.remoteAddrPkgMapMutex.Unlock() + h.defaultProxy.ServeHTTP(rw, req) + } +} + +func (h *HttpHandler) findProxyForPkg(pkg string) (*goproxy.ProxyHttpServer, error) { + if h.ctx == nil { + return nil, fmt.Errorf("Null context") + } + + find := func() (cat string, res string, err error) { + h.logger.Verbosef("Call FindProxyForPkg %v %v", pkg) + res, err = FindProxyForPkg(h.ctx, pkg, h.logger) + h.logger.Verbosef("FindProxyForPkg res %v %v", res, err) + if err != nil { + h.logger.Verbosef("FindProxyForPkg result is: %v stack:%v", res, h.ctx.GetTop()) + return "", "", err + } else if res == "" { + return "DIRECT", "", nil + } else { + values := strings.Split(strings.Trim(res, " "), ";") + for _, v := range values { + value := strings.Trim(v, " ") + parts := strings.SplitN(value, " ", 2) + if parts[0] == "PROXY" || parts[0] == "HTTP" { + return "PROXY", "http://" + parts[1], nil + } else if parts[0] == "HTTPS" { + return "PROXY", "https://" + parts[1], nil + } else if parts[0] == "DIRECT" { + return parts[0], "", nil + } else if parts[0] == "SOCKS" || parts[0] == "SOCKS5" { + return "SOCKS5", parts[1], nil + } + } + } + return "", "", fmt.Errorf("No result") + } + cat, res, err := find() + if err != nil { + return nil, err + } + + var proxy *goproxy.ProxyHttpServer + if cat == "DIRECT" { + proxy = h.defaultProxy + } else { + proxy, err = h.p.newGoProxy(cat, res) + if err != nil { + return nil, err + } + } + h.proxyMap[pkg] = proxy + + return proxy, nil +} + +type AddrPortPair struct { + local netip.AddrPort + remote netip.AddrPort +} + +// Listener +type Listener struct { + l net.Listener + handler *HttpHandler + logger *device.Logger +} + +func NewListener(listener net.Listener, handler *HttpHandler, logger *device.Logger) *Listener{ + l := &Listener{ + l: listener, + handler: handler, + logger: logger, + } + + return l +} + +func (l *Listener) Accept() (net.Conn, error) { + c, err := l.l.Accept() + if err != nil { + l.logger.Verbosef("Accept failed: %v", err) + return c, err + } + + if err := l.handler.addConnToProxyMap(c); err != nil { + err = fmt.Errorf("Reject connection (%v): %v", c, err) + c.Close() + return nil, err + } + + return c, nil +} + +func (l *Listener) Close() error { + return l.l.Close() +} + +func (l *Listener) Addr() net.Addr { + return l.l.Addr() +} diff --git a/tunnel/tools/libwg-go/jni.c b/tunnel/tools/libwg-go/jni.c index 7ad94d35..121729a7 100644 --- a/tunnel/tools/libwg-go/jni.c +++ b/tunnel/tools/libwg-go/jni.c @@ -14,6 +14,7 @@ extern int wgGetSocketV4(int handle); extern int wgGetSocketV6(int handle); extern char *wgGetConfig(int handle); extern char *wgVersion(); +extern int wgStartGrpc(); JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgTurnOn(JNIEnv *env, jclass c, jstring ifname, jint tun_fd, jstring settings) { @@ -69,3 +70,15 @@ JNIEXPORT jstring JNICALL Java_com_wireguard_android_backend_GoBackend_wgVersion free(version); return ret; } + +JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgStartGrpc(JNIEnv *env, jclass c, jstring sockname) +{ + const char *sockname_str = (*env)->GetStringUTFChars(env, sockname, 0); + size_t sockname_len = (*env)->GetStringUTFLength(env, sockname); + jint res = wgStartGrpc((struct go_string){ + .str = sockname_str, + .n = sockname_len + }); + (*env)->ReleaseStringUTFChars(env, sockname, sockname_str); + return res; +} diff --git a/tunnel/tools/libwg-go/service.go b/tunnel/tools/libwg-go/service.go new file mode 100644 index 00000000..1f2e629c --- /dev/null +++ b/tunnel/tools/libwg-go/service.go @@ -0,0 +1,246 @@ +package main + +import ( + "context" + "fmt" + "io" + "net" + "net/url" + "os" + + "google.golang.org/grpc" + "google.golang.org/grpc/codes" + "google.golang.org/grpc/status" + + gen "golang.zx2c4.com/wireguard/android/gen" + "golang.zx2c4.com/wireguard/device" +) + +const ( + IPPROTO_TCP = 6 +) + +type UidRequest struct { + Data AddrPortPair + RetCh chan string +} + +type LibwgServiceImpl struct { + gen.UnimplementedLibwgServer + logger *device.Logger + httpProxy *HttpProxy + uidRequest chan UidRequest + stopReverse chan bool +} + +var service *LibwgServiceImpl +var server *grpc.Server + +func NewLibwgService(logger *device.Logger) gen.LibwgServer { + return &LibwgServiceImpl{ + logger: logger, + uidRequest: make(chan UidRequest), + stopReverse: make(chan bool), + } +} + +func StartGrpc(sock_path string, logger *device.Logger) (int, string) { + if server != nil { + return -1, "Already started" + } + + if _, err := os.Stat(sock_path); err == nil { + if err := os.RemoveAll(sock_path); err != nil { + return -1, fmt.Sprintf("Cleanup failed: %v %v", sock_path, err) + } + } + + listener, err := net.Listen("unix", sock_path) + if err != nil { + return -1, fmt.Sprintf("Listen failed: %v %v", sock_path, err) + } + + server = grpc.NewServer() + service = NewLibwgService(logger).(*LibwgServiceImpl) + + gen.RegisterLibwgServer(server, service) + + go func() { + server.Serve(listener) + }() + + logger.Verbosef("gRPC started") + + return 0, "" +} + +func (e *LibwgServiceImpl) Version(ctx context.Context, req *gen.VersionRequest) (*gen.VersionResponse, error) { + + r := &gen.VersionResponse{ + Version: Version(), + } + + return r, nil +} + +func (e *LibwgServiceImpl) StopGrpc(ctx context.Context, req *gen.StopGrpcRequest) (*gen.StopGrpcResponse, error) { + if server != nil { + server.Stop() + server = nil + service = nil + } + + r := &gen.StopGrpcResponse{ + } + + return r, nil +} + +func buildStartHttpProxyError(message string) (*gen.StartHttpProxyResponse, error) { + r := &gen.StartHttpProxyResponse{ + Error: &gen.Error{ + Message: message, + }, + } + return r, nil +} + +func (e *LibwgServiceImpl) StartHttpProxy(ctx context.Context, req *gen.StartHttpProxyRequest) (*gen.StartHttpProxyResponse, error) { + var listenPort uint16 + if e.httpProxy == nil { + e.httpProxy = NewHttpProxy(e.uidRequest, e.logger) + var err error + listenPort, err = e.httpProxy.Start() + + if err != nil { + e.httpProxy = nil + return buildStartHttpProxyError(fmt.Sprintf("Http proxy start failed: %v", err)) + } + } else { + listenPort = e.httpProxy.GetAddrPort().Port() + } + + pacFileUrl, err := url.Parse(req.PacFileUrl) + if err != nil { + return buildStartHttpProxyError(fmt.Sprintf("Bad pacFileUrl: %v (%s)", err, req.PacFileUrl)) + } + + err = e.httpProxy.SetPacFileUrl(pacFileUrl) + if err != nil { + return buildStartHttpProxyError(fmt.Sprintf("Bad pacFileUrl: %v (%s)", req.PacFileUrl)) + } + + r := &gen.StartHttpProxyResponse{ + ListenPort: uint32(listenPort), + } + return r, nil +} + +func (e *LibwgServiceImpl) StopHttpProxy(ctx context.Context, req *gen.StopHttpProxyRequest) (*gen.StopHttpProxyResponse, error) { + if e.httpProxy == nil { + r := &gen.StopHttpProxyResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("Http proxy not running"), + }, + } + return r, nil + } + + e.httpProxy.Stop() + e.httpProxy = nil + e.stopReverse <- true + r := &gen.StopHttpProxyResponse{} + return r, nil +} + +func (e *LibwgServiceImpl) Reverse(stream gen.Libwg_ReverseServer) error { + e.logger.Verbosef("Reverse enter loop") + for e.httpProxy != nil { + var err error + + // err := contextError(stream.Context()) + err = stream.Context().Err() + if err != nil { + e.logger.Verbosef("Reverse: context: %v", err) + return err + } + + select { + case <-e.stopReverse: + e.logger.Verbosef("Reverse: stop") + break + case uidReq := <-e.uidRequest: + addrPortPair := uidReq.Data + local := addrPortPair.local + remote := addrPortPair.remote + r := &gen.ReverseResponse{ + Request: &gen.ReverseResponse_Uid{ + Uid: &gen.GetConnectionOwnerUidRequest{ + Protocol: IPPROTO_TCP, + Local: &gen.InetSocketAddress{ + Address: &gen.InetAddress{ + Address: local.Addr().AsSlice(), + }, + Port: uint32(local.Port()), + }, + Remote: &gen.InetSocketAddress{ + Address: &gen.InetAddress{ + Address: remote.Addr().AsSlice(), + }, + Port: uint32(remote.Port()), + }, + }, + }, + } + + stream.Send(r) + + req, err := stream.Recv() + if err == io.EOF { + e.logger.Verbosef("no more data") + uidReq.RetCh <- "" + break + } + if err != nil { + err = status.Errorf(codes.Unknown, "cannot receive stream request: %v", err) + e.logger.Verbosef("Reverse: %v", err) + uidReq.RetCh <- "" + return err + } + + e.logger.Verbosef("Reverse: received, wait: %v", req) + uidReq.RetCh <- req.GetUid().GetPackage() + } + } + + + e.logger.Verbosef("Reverse returns") + return nil +} + +func (e *LibwgServiceImpl) IpcSet(ctx context.Context, req *gen.IpcSetRequest) (*gen.IpcSetResponse, error) { + tunnel, ok := GetTunnel(req.GetTunnel().GetHandle()) + if !ok { + r := &gen.IpcSetResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("Invalid tunnel"), + }, + } + return r, nil + } + + err := tunnel.device.IpcSet(req.GetConfig()) + if err != nil { + r := &gen.IpcSetResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("IpcSet failed: %v", err), + }, + } + return r, nil + } + + r := &gen.IpcSetResponse{ + } + + return r, nil +} |