Merge branch 'windows-tor-plugin' into 'master'

Add Tor plugin for Windows

See merge request briar/briar!1666

bramble-core/src/main/java/org/briarproject/bramble/plugin/tor/TorPlugin.java

@@ -107,7 +107,7 @@ import static org.briarproject.bramble.util.StringUtils.isNullOrEmpty;
 @ParametersNotNullByDefault
 abstract class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 
-	private static final Logger LOG = getLogger(TorPlugin.class.getName());
+	protected static final Logger LOG = getLogger(TorPlugin.class.getName());
 
 	private static final String[] EVENTS = {
 			"CIRC",
@@ -124,7 +124,8 @@ abstract class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 	private static final int COOKIE_POLLING_INTERVAL_MS = 200;
 	private static final Pattern ONION_V3 = Pattern.compile("[a-z2-7]{56}");
 
-	private final Executor ioExecutor, wakefulIoExecutor;
+	protected final Executor ioExecutor;
+	private final Executor wakefulIoExecutor;
 	private final Executor connectionStatusExecutor;
 	private final NetworkManager networkManager;
 	private final LocationUtils locationUtils;
@@ -254,34 +255,15 @@ abstract class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		Map<String, String> env = pb.environment();
 		env.put("HOME", torDirectory.getAbsolutePath());
 		pb.directory(torDirectory);
+		pb.redirectErrorStream(true);
 		try {
 			torProcess = pb.start();
 		} catch (SecurityException | IOException e) {
 			throw new PluginException(e);
 		}
-		// Log the process's standard output until it detaches
-		if (LOG.isLoggable(INFO)) {
-			Scanner stdout = new Scanner(torProcess.getInputStream());
-			Scanner stderr = new Scanner(torProcess.getErrorStream());
-			while (stdout.hasNextLine() || stderr.hasNextLine()) {
-				if (stdout.hasNextLine()) {
-					LOG.info(stdout.nextLine());
-				}
-				if (stderr.hasNextLine()) {
-					LOG.info(stderr.nextLine());
-				}
-			}
-			stdout.close();
-			stderr.close();
-		}
 		try {
-			// Wait for the process to detach or exit
+			// Wait for the Tor process to start
-			int exit = torProcess.waitFor();
+			waitForTorToStart(torProcess);
-			if (exit != 0) {
-				if (LOG.isLoggable(WARNING))
-					LOG.warning("Tor exited with value " + exit);
-				throw new PluginException();
-			}
 			// Wait for the auth cookie file to be created/updated
 			long start = clock.currentTimeMillis();
 			while (cookieFile.length() < 32) {
@@ -397,7 +379,7 @@ abstract class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		return zin;
 	}
 
-	private static void append(StringBuilder strb, String name, int value) {
+	private static void append(StringBuilder strb, String name, Object value) {
 		strb.append(name);
 		strb.append(" ");
 		strb.append(value);
@@ -405,13 +387,17 @@ abstract class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 	}
 
 	private InputStream getConfigInputStream() {
+		File dataDirectory = new File(torDirectory, ".tor");
 		StringBuilder strb = new StringBuilder();
 		append(strb, "ControlPort", torControlPort);
 		append(strb, "CookieAuthentication", 1);
+		append(strb, "DataDirectory", dataDirectory.getAbsolutePath());
 		append(strb, "DisableNetwork", 1);
 		append(strb, "RunAsDaemon", 1);
 		append(strb, "SafeSocks", 1);
 		append(strb, "SocksPort", torSocksPort);
+		strb.append("GeoIPFile\n");
+		strb.append("GeoIPv6File\n");
 		//noinspection CharsetObjectCanBeUsed
 		return new ByteArrayInputStream(
 				strb.toString().getBytes(Charset.forName("UTF-8")));
@@ -442,6 +428,23 @@ abstract class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		}
 	}
 
+	protected void waitForTorToStart(Process torProcess)
+			throws InterruptedException, PluginException {
+		Scanner stdout = new Scanner(torProcess.getInputStream());
+		// Log the first line of stdout (contains Tor and library versions)
+		if (stdout.hasNextLine()) LOG.info(stdout.nextLine());
+		// Read the process's stdout (and redirected stderr) until it detaches
+		while (stdout.hasNextLine()) stdout.nextLine();
+		stdout.close();
+		// Wait for the process to detach or exit
+		int exit = torProcess.waitFor();
+		if (exit != 0) {
+			if (LOG.isLoggable(WARNING))
+				LOG.warning("Tor exited with value " + exit);
+			throw new PluginException();
+		}
+	}
+
 	private void bind() {
 		ioExecutor.execute(() -> {
 			// If there's already a port number stored in config, reuse it

bramble-java/build.gradle

@@ -18,7 +18,9 @@ dependencies {
 	implementation "net.java.dev.jna:jna:$jna_version"
 	implementation "net.java.dev.jna:jna-platform:$jna_version"
 	tor "org.briarproject:tor-linux:$tor_version"
+	tor "org.briarproject:tor-windows:$tor_version"
 	tor "org.briarproject:obfs4proxy-linux:$obfs4proxy_version"
+	tor "org.briarproject:obfs4proxy-windows:$obfs4proxy_version"
 
 	annotationProcessor "com.google.dagger:dagger-compiler:$dagger_version"
 

bramble-java/src/main/java/org/briarproject/bramble/plugin/tor/WindowsTorPlugin.java

@@ -0,0 +1,97 @@
+package org.briarproject.bramble.plugin.tor;
+
+import com.sun.jna.platform.win32.Kernel32;
+
+import org.briarproject.bramble.api.battery.BatteryManager;
+import org.briarproject.bramble.api.network.NetworkManager;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.api.plugin.Backoff;
+import org.briarproject.bramble.api.plugin.PluginCallback;
+import org.briarproject.bramble.api.plugin.PluginException;
+import org.briarproject.bramble.api.system.Clock;
+import org.briarproject.bramble.api.system.LocationUtils;
+import org.briarproject.bramble.api.system.ResourceProvider;
+
+import java.io.File;
+import java.util.Scanner;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Executor;
+
+import javax.net.SocketFactory;
+
+import static java.util.logging.Level.INFO;
+
+@NotNullByDefault
+class WindowsTorPlugin extends JavaTorPlugin {
+
+	WindowsTorPlugin(Executor ioExecutor,
+			Executor wakefulIoExecutor,
+			NetworkManager networkManager,
+			LocationUtils locationUtils,
+			SocketFactory torSocketFactory,
+			Clock clock,
+			ResourceProvider resourceProvider,
+			CircumventionProvider circumventionProvider,
+			BatteryManager batteryManager,
+			Backoff backoff,
+			TorRendezvousCrypto torRendezvousCrypto,
+			PluginCallback callback,
+			String architecture,
+			long maxLatency,
+			int maxIdleTime,
+			File torDirectory,
+			int torSocksPort,
+			int torControlPort) {
+		super(ioExecutor, wakefulIoExecutor, networkManager, locationUtils,
+				torSocketFactory, clock, resourceProvider,
+				circumventionProvider, batteryManager, backoff,
+				torRendezvousCrypto, callback, architecture,
+				maxLatency, maxIdleTime, torDirectory, torSocksPort,
+				torControlPort);
+	}
+
+	@Override
+	protected int getProcessId() {
+		return Kernel32.INSTANCE.GetCurrentProcessId();
+	}
+
+	@Override
+	protected void waitForTorToStart(Process torProcess)
+			throws InterruptedException, PluginException {
+		// On Windows the RunAsDaemon option has no effect, so Tor won't detach.
+		// Wait for the control port to be opened, then continue to read its
+		// stdout and stderr in a background thread until it exits.
+		BlockingQueue<Boolean> success = new ArrayBlockingQueue<>(1);
+		ioExecutor.execute(() -> {
+			boolean started = false;
+			// Read the process's stdout (and redirected stderr)
+			Scanner stdout = new Scanner(torProcess.getInputStream());
+			// Log the first line of stdout (contains Tor and library versions)
+			if (stdout.hasNextLine()) LOG.info(stdout.nextLine());
+			// Startup has succeeded when the control port is open
+			while (stdout.hasNextLine()) {
+				String line = stdout.nextLine();
+				if (!started && line.contains("Opened Control listener")) {
+					success.add(true);
+					started = true;
+				}
+			}
+			stdout.close();
+			// If the control port wasn't opened, startup has failed
+			if (!started) success.add(false);
+			// Wait for the process to exit
+			try {
+				int exit = torProcess.waitFor();
+				if (LOG.isLoggable(INFO))
+					LOG.info("Tor exited with value " + exit);
+			} catch (InterruptedException e1) {
+				LOG.warning("Interrupted while waiting for Tor to exit");
+				Thread.currentThread().interrupt();
+			}
+		});
+		// Wait for the startup result
+		if (!success.take()) throw new PluginException();
+	}
+
+}

bramble-java/src/main/java/org/briarproject/bramble/plugin/tor/WindowsTorPluginFactory.java

@@ -0,0 +1,80 @@
+package org.briarproject.bramble.plugin.tor;
+
+import org.briarproject.bramble.api.battery.BatteryManager;
+import org.briarproject.bramble.api.crypto.CryptoComponent;
+import org.briarproject.bramble.api.event.EventBus;
+import org.briarproject.bramble.api.lifecycle.IoExecutor;
+import org.briarproject.bramble.api.network.NetworkManager;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.api.plugin.Backoff;
+import org.briarproject.bramble.api.plugin.BackoffFactory;
+import org.briarproject.bramble.api.plugin.PluginCallback;
+import org.briarproject.bramble.api.plugin.TorControlPort;
+import org.briarproject.bramble.api.plugin.TorDirectory;
+import org.briarproject.bramble.api.plugin.TorSocksPort;
+import org.briarproject.bramble.api.system.Clock;
+import org.briarproject.bramble.api.system.LocationUtils;
+import org.briarproject.bramble.api.system.ResourceProvider;
+import org.briarproject.bramble.api.system.WakefulIoExecutor;
+
+import java.io.File;
+import java.util.concurrent.Executor;
+
+import javax.annotation.Nullable;
+import javax.annotation.concurrent.Immutable;
+import javax.inject.Inject;
+import javax.net.SocketFactory;
+
+import static java.util.logging.Level.INFO;
+import static org.briarproject.bramble.util.OsUtils.isWindows;
+
+@Immutable
+@NotNullByDefault
+public class WindowsTorPluginFactory extends TorPluginFactory {
+
+	@Inject
+	WindowsTorPluginFactory(@IoExecutor Executor ioExecutor,
+			@WakefulIoExecutor Executor wakefulIoExecutor,
+			NetworkManager networkManager,
+			LocationUtils locationUtils,
+			EventBus eventBus,
+			SocketFactory torSocketFactory,
+			BackoffFactory backoffFactory,
+			ResourceProvider resourceProvider,
+			CircumventionProvider circumventionProvider,
+			BatteryManager batteryManager,
+			Clock clock,
+			CryptoComponent crypto,
+			@TorDirectory File torDirectory,
+			@TorSocksPort int torSocksPort,
+			@TorControlPort int torControlPort) {
+		super(ioExecutor, wakefulIoExecutor, networkManager, locationUtils,
+				eventBus, torSocketFactory, backoffFactory, resourceProvider,
+				circumventionProvider, batteryManager, clock, crypto,
+				torDirectory, torSocksPort, torControlPort);
+	}
+
+	@Nullable
+	@Override
+	String getArchitectureForTorBinary() {
+		if (!isWindows()) return null;
+		String arch = System.getProperty("os.arch");
+		if (LOG.isLoggable(INFO)) {
+			LOG.info("System's os.arch is " + arch);
+		}
+		if (arch.equals("amd64")) return "windows-x86_64";
+		return null;
+	}
+
+	@Override
+	TorPlugin createPluginInstance(Backoff backoff,
+			TorRendezvousCrypto torRendezvousCrypto, PluginCallback callback,
+			String architecture) {
+		return new WindowsTorPlugin(ioExecutor, wakefulIoExecutor,
+				networkManager, locationUtils, torSocketFactory, clock,
+				resourceProvider, circumventionProvider, batteryManager,
+				backoff, torRendezvousCrypto, callback, architecture,
+				MAX_LATENCY, MAX_IDLE_TIME, torDirectory, torSocksPort,
+				torControlPort);
+	}
+}

bramble-java/src/main/java/org/briarproject/bramble/system/DesktopSecureRandomModule.java

@@ -16,9 +16,7 @@ public class DesktopSecureRandomModule {
 	@Provides
 	@Singleton
 	SecureRandomProvider provideSecureRandomProvider() {
-		if (isLinux() || isMac())
+		if (isLinux() || isMac()) return new UnixSecureRandomProvider();
-			return new UnixSecureRandomProvider();
+		return () -> null; // Use system default
-		// TODO: Create a secure random provider for Windows
-		throw new UnsupportedOperationException();
 	}
 }

bramble-java/witness.gradle

@@ -25,7 +25,9 @@ dependencyVerification {
         'net.ltgt.gradle.incap:incap:0.2:incap-0.2.jar:b625b9806b0f1e4bc7a2e3457119488de3cd57ea20feedd513db070a573a4ffd',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
         'org.briarproject:obfs4proxy-linux:0.0.12:obfs4proxy-linux-0.0.12.jar:3dd83aff25fe1cb3e4eab78a02c76ac921f552be6877b3af83a472438525df2a',
+        'org.briarproject:obfs4proxy-windows:0.0.12:obfs4proxy-windows-0.0.12.jar:392aa4b9d9c6fef0c659c4068d019d6c6471991bbb62ff00553884ec36018c7b',
         'org.briarproject:tor-linux:0.4.5.12-2:tor-linux-0.4.5.12-2.jar:d275f323faf5e70b33d2c8a1bdab1bb3ab5a0d8f4e23c4a6dda03d86f4e95838',
+        'org.briarproject:tor-windows:0.4.5.12-2:tor-windows-0.4.5.12-2.jar:46599a15d099ed35a360113293f66acc119571c24ec2e37e85e4fb54b4722e07',
         'org.checkerframework:checker-compat-qual:2.5.3:checker-compat-qual-2.5.3.jar:d76b9afea61c7c082908023f0cbc1427fab9abd2df915c8b8a3e7a509bccbc6d',
         'org.checkerframework:checker-qual:2.5.2:checker-qual-2.5.2.jar:64b02691c8b9d4e7700f8ee2e742dce7ea2c6e81e662b7522c9ee3bf568c040a',
         'org.codehaus.mojo:animal-sniffer-annotations:1.17:animal-sniffer-annotations-1.17.jar:92654f493ecfec52082e76354f0ebf87648dc3d5cec2e3c3cdb947c016747a53',

briar-headless/build.gradle

@@ -60,7 +60,12 @@ void jarFactory(Jar jarTask, jarArchitecture) {
 	}
 			{
 				it.duplicatesStrategy(DuplicatesStrategy.EXCLUDE)
-				String[] architectures = ["linux-aarch64", "linux-armhf", "linux-x86_64"]
+				String[] architectures = [
+						"linux-aarch64",
+						"linux-armhf",
+						"linux-x86_64",
+						"windows-x86_64"
+				]
 				for (String arch : architectures) {
 					if (arch != jarArchitecture) {
 						exclude "obfs4proxy_" + arch + ".zip"
@@ -113,6 +118,10 @@ task x86LinuxJar(type: Jar) {
 	jarFactory(it, 'linux-x86_64')
 }
 
+task windowsJar(type: Jar) {
+	jarFactory(it, 'windows-x86_64')
+}
+
 task linuxJars {
 	dependsOn(aarch64LinuxJar, armhfLinuxJar, x86LinuxJar)
 }

briar-headless/src/main/java/org/briarproject/briar/headless/HeadlessModule.kt

@@ -21,6 +21,7 @@ import org.briarproject.bramble.event.DefaultEventExecutorModule
 import org.briarproject.bramble.network.JavaNetworkModule
 import org.briarproject.bramble.plugin.tor.CircumventionModule
 import org.briarproject.bramble.plugin.tor.UnixTorPluginFactory
+import org.briarproject.bramble.plugin.tor.WindowsTorPluginFactory
 import org.briarproject.bramble.socks.SocksModule
 import org.briarproject.bramble.system.ClockModule
 import org.briarproject.bramble.system.DefaultTaskSchedulerModule
@@ -29,6 +30,7 @@ import org.briarproject.bramble.system.DesktopSecureRandomModule
 import org.briarproject.bramble.system.JavaSystemModule
 import org.briarproject.bramble.util.OsUtils.isLinux
 import org.briarproject.bramble.util.OsUtils.isMac
+import org.briarproject.bramble.util.OsUtils.isWindows
 import org.briarproject.briar.headless.blogs.HeadlessBlogModule
 import org.briarproject.briar.headless.contact.HeadlessContactModule
 import org.briarproject.briar.headless.event.HeadlessEventModule
@@ -94,9 +96,15 @@ internal class HeadlessModule(private val appDir: File) {
 
     @Provides
     @Singleton
-    internal fun providePluginConfig(tor: UnixTorPluginFactory): PluginConfig {
+    internal fun providePluginConfig(
-        val duplex: List<DuplexPluginFactory> =
+        unixTor: UnixTorPluginFactory,
-            if (isLinux() || isMac()) listOf(tor) else emptyList()
+        winTor: WindowsTorPluginFactory
+    ): PluginConfig {
+        val duplex: List<DuplexPluginFactory> = when {
+            isLinux() || isMac() -> listOf(unixTor)
+            isWindows() -> listOf(winTor)
+            else -> emptyList()
+        }
         return object : PluginConfig {
             override fun getDuplexFactories(): Collection<DuplexPluginFactory> = duplex
             override fun getSimplexFactories(): Collection<SimplexPluginFactory> = emptyList()

briar-headless/src/main/java/org/briarproject/briar/headless/Main.kt

@@ -8,6 +8,8 @@ import com.github.ajalt.clikt.parameters.options.option
 import com.github.ajalt.clikt.parameters.types.int
 import org.bouncycastle.util.encoders.Base64.toBase64String
 import org.briarproject.bramble.BrambleCoreEagerSingletons
+import org.briarproject.bramble.util.OsUtils.isLinux
+import org.briarproject.bramble.util.OsUtils.isMac
 import org.briarproject.briar.BriarCoreEagerSingletons
 import org.slf4j.impl.SimpleLogger.DEFAULT_LOG_LEVEL_KEY
 import java.io.File
@@ -90,11 +92,13 @@ private class Main : CliktCommand(
         } else if (!file.isDirectory) {
             throw IOException("Data dir is not a directory: ${file.absolutePath}")
         }
-        val perms = HashSet<PosixFilePermission>()
+        if (isLinux() || isMac()) {
-        perms.add(OWNER_READ)
+            val perms = HashSet<PosixFilePermission>()
-        perms.add(OWNER_WRITE)
+            perms.add(OWNER_READ)
-        perms.add(OWNER_EXECUTE)
+            perms.add(OWNER_WRITE)
-        setPosixFilePermissions(file.toPath(), perms)
+            perms.add(OWNER_EXECUTE)
+            setPosixFilePermissions(file.toPath(), perms)
+        }
         return file
     }