mirror of
https://code.briarproject.org/briar/briar.git
synced 2026-02-12 18:59:06 +01:00
Factor shared Bluetooth code into superclass.
This commit is contained in:
akwizgran
@@ -13,7 +13,7 @@ import org.briarproject.bramble.api.plugin.simplex.SimplexPluginFactory;
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import org.briarproject.bramble.api.reporting.DevReporter;
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import org.briarproject.bramble.api.system.AndroidExecutor;
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import org.briarproject.bramble.api.system.LocationUtils;
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import org.briarproject.bramble.plugin.droidtooth.DroidtoothPluginFactory;
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import org.briarproject.bramble.plugin.bluetooth.AndroidBluetoothPluginFactory;
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import org.briarproject.bramble.plugin.tcp.AndroidLanTcpPluginFactory;
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import org.briarproject.bramble.plugin.tor.TorPluginFactory;
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@@ -38,8 +38,9 @@ public class AndroidPluginModule {
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Application app, LocationUtils locationUtils, DevReporter reporter,
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EventBus eventBus) {
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Context appContext = app.getApplicationContext();
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DuplexPluginFactory bluetooth = new DroidtoothPluginFactory(ioExecutor,
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androidExecutor, appContext, random, eventBus, backoffFactory);
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DuplexPluginFactory bluetooth =
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new AndroidBluetoothPluginFactory(ioExecutor, androidExecutor,
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appContext, random, eventBus, backoffFactory);
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DuplexPluginFactory tor = new TorPluginFactory(ioExecutor, appContext,
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locationUtils, reporter, eventBus, torSocketFactory,
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backoffFactory);
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@@ -0,0 +1,223 @@
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package org.briarproject.bramble.plugin.bluetooth;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.bluetooth.BluetoothServerSocket;
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import android.bluetooth.BluetoothSocket;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import org.briarproject.bramble.api.event.Event;
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import org.briarproject.bramble.api.event.EventListener;
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import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
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import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
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import org.briarproject.bramble.api.plugin.Backoff;
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import org.briarproject.bramble.api.plugin.duplex.DuplexPluginCallback;
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import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
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import org.briarproject.bramble.api.plugin.event.DisableBluetoothEvent;
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import org.briarproject.bramble.api.plugin.event.EnableBluetoothEvent;
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import org.briarproject.bramble.api.system.AndroidExecutor;
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import org.briarproject.bramble.util.AndroidUtils;
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import java.io.Closeable;
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import java.io.IOException;
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import java.security.SecureRandom;
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import java.util.UUID;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.Executor;
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import java.util.logging.Logger;
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import javax.annotation.Nullable;
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import static android.bluetooth.BluetoothAdapter.ACTION_SCAN_MODE_CHANGED;
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import static android.bluetooth.BluetoothAdapter.ACTION_STATE_CHANGED;
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import static android.bluetooth.BluetoothAdapter.EXTRA_SCAN_MODE;
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import static android.bluetooth.BluetoothAdapter.EXTRA_STATE;
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import static android.bluetooth.BluetoothAdapter.SCAN_MODE_CONNECTABLE;
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import static android.bluetooth.BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE;
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import static android.bluetooth.BluetoothAdapter.SCAN_MODE_NONE;
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import static android.bluetooth.BluetoothAdapter.STATE_OFF;
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import static android.bluetooth.BluetoothAdapter.STATE_ON;
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import static java.util.logging.Level.WARNING;
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@MethodsNotNullByDefault
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@ParametersNotNullByDefault
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class AndroidBluetoothPlugin extends BluetoothPlugin<BluetoothServerSocket>
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implements EventListener {
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private static final Logger LOG =
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Logger.getLogger(AndroidBluetoothPlugin.class.getName());
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private final AndroidExecutor androidExecutor;
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private final Context appContext;
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private volatile boolean wasEnabledByUs = false;
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private volatile BluetoothStateReceiver receiver = null;
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// Non-null if the plugin started successfully
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private volatile BluetoothAdapter adapter = null;
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AndroidBluetoothPlugin(Executor ioExecutor, AndroidExecutor androidExecutor,
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Context appContext, SecureRandom secureRandom, Backoff backoff,
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DuplexPluginCallback callback, int maxLatency) {
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super(ioExecutor, secureRandom, backoff, callback, maxLatency);
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this.androidExecutor = androidExecutor;
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this.appContext = appContext;
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}
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@Override
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void initialiseAdapter() throws IOException {
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// BluetoothAdapter.getDefaultAdapter() must be called on a thread
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// with a message queue, so submit it to the AndroidExecutor
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try {
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adapter = androidExecutor.runOnBackgroundThread(
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BluetoothAdapter::getDefaultAdapter).get();
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} catch (InterruptedException | ExecutionException e) {
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throw new IOException(e);
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}
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if (adapter == null) {
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LOG.info("Bluetooth is not supported");
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throw new IOException();
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}
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// Listen for changes to the Bluetooth state
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IntentFilter filter = new IntentFilter();
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filter.addAction(ACTION_STATE_CHANGED);
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filter.addAction(ACTION_SCAN_MODE_CHANGED);
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receiver = new BluetoothStateReceiver();
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appContext.registerReceiver(receiver, filter);
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}
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@Override
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boolean isAdapterEnabled() {
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return adapter.isEnabled();
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}
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@Override
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void enableAdapter() {
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if (adapter != null && !adapter.isEnabled()) {
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if (adapter.enable()) {
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LOG.info("Enabling Bluetooth");
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wasEnabledByUs = true;
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} else {
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LOG.info("Could not enable Bluetooth");
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}
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}
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}
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@Override
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public void stop() {
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super.stop();
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if (receiver != null) appContext.unregisterReceiver(receiver);
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disableAdapter();
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}
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private void disableAdapter() {
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if (adapter != null && adapter.isEnabled() && wasEnabledByUs) {
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if (adapter.disable()) LOG.info("Disabling Bluetooth");
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else LOG.info("Could not disable Bluetooth");
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}
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}
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@Override
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public boolean isRunning() {
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return super.isRunning() && adapter != null && adapter.isEnabled();
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}
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@Override
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@Nullable
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String getBluetoothAddress() {
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String address = AndroidUtils.getBluetoothAddress(appContext, adapter);
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return address.isEmpty() ? null : address;
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}
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@Override
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BluetoothServerSocket openServerSocket(String uuid) throws IOException {
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return adapter.listenUsingInsecureRfcommWithServiceRecord(
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"RFCOMM", UUID.fromString(uuid));
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}
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@Override
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void tryToClose(@Nullable BluetoothServerSocket ss) {
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try {
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if (ss != null) ss.close();
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} catch (IOException e) {
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if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
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}
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}
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@Override
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DuplexTransportConnection acceptConnection(BluetoothServerSocket ss)
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throws IOException {
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return wrapSocket(ss.accept());
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}
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private DuplexTransportConnection wrapSocket(BluetoothSocket s) {
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return new AndroidBluetoothTransportConnection(this, s);
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}
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@Override
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boolean isValidAddress(String address) {
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return BluetoothAdapter.checkBluetoothAddress(address);
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}
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@Override
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DuplexTransportConnection connectTo(String address, String uuid)
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throws IOException {
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BluetoothDevice d = adapter.getRemoteDevice(address);
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UUID u = UUID.fromString(uuid);
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BluetoothSocket s = null;
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try {
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s = d.createInsecureRfcommSocketToServiceRecord(u);
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s.connect();
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return wrapSocket(s);
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} catch (IOException e) {
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tryToClose(s);
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throw e;
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}
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}
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private void tryToClose(@Nullable Closeable c) {
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try {
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if (c != null) c.close();
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} catch (IOException e) {
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if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
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}
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}
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@Override
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public void eventOccurred(Event e) {
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if (e instanceof EnableBluetoothEvent) {
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enableAdapterAsync();
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} else if (e instanceof DisableBluetoothEvent) {
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disableAdapterAsync();
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}
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}
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private void enableAdapterAsync() {
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ioExecutor.execute(this::enableAdapter);
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}
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private void disableAdapterAsync() {
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ioExecutor.execute(this::disableAdapter);
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}
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private class BluetoothStateReceiver extends BroadcastReceiver {
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@Override
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public void onReceive(Context ctx, Intent intent) {
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int state = intent.getIntExtra(EXTRA_STATE, 0);
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if (state == STATE_ON) onAdapterEnabled();
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else if (state == STATE_OFF) onAdapterDisabled();
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int scanMode = intent.getIntExtra(EXTRA_SCAN_MODE, 0);
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if (scanMode == SCAN_MODE_NONE) {
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LOG.info("Scan mode: None");
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} else if (scanMode == SCAN_MODE_CONNECTABLE) {
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LOG.info("Scan mode: Connectable");
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} else if (scanMode == SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
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LOG.info("Scan mode: Discoverable");
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}
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}
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}
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}
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@@ -1,4 +1,4 @@
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package org.briarproject.bramble.plugin.droidtooth;
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package org.briarproject.bramble.plugin.bluetooth;
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import android.content.Context;
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@@ -21,7 +21,7 @@ import static org.briarproject.bramble.api.plugin.BluetoothConstants.ID;
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@Immutable
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@NotNullByDefault
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public class DroidtoothPluginFactory implements DuplexPluginFactory {
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public class AndroidBluetoothPluginFactory implements DuplexPluginFactory {
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private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
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private static final int MIN_POLLING_INTERVAL = 60 * 1000; // 1 minute
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@@ -35,7 +35,7 @@ public class DroidtoothPluginFactory implements DuplexPluginFactory {
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private final EventBus eventBus;
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private final BackoffFactory backoffFactory;
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public DroidtoothPluginFactory(Executor ioExecutor,
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public AndroidBluetoothPluginFactory(Executor ioExecutor,
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AndroidExecutor androidExecutor, Context appContext,
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SecureRandom secureRandom, EventBus eventBus,
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BackoffFactory backoffFactory) {
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@@ -61,7 +61,7 @@ public class DroidtoothPluginFactory implements DuplexPluginFactory {
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public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
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Backoff backoff = backoffFactory.createBackoff(MIN_POLLING_INTERVAL,
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MAX_POLLING_INTERVAL, BACKOFF_BASE);
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DroidtoothPlugin plugin = new DroidtoothPlugin(ioExecutor,
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AndroidBluetoothPlugin plugin = new AndroidBluetoothPlugin(ioExecutor,
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androidExecutor, appContext, secureRandom, backoff, callback,
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MAX_LATENCY);
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eventBus.addListener(plugin);
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@@ -1,4 +1,4 @@
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package org.briarproject.bramble.plugin.droidtooth;
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package org.briarproject.bramble.plugin.bluetooth;
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import android.bluetooth.BluetoothSocket;
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@@ -11,11 +11,12 @@ import java.io.InputStream;
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import java.io.OutputStream;
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@NotNullByDefault
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class DroidtoothTransportConnection extends AbstractDuplexTransportConnection {
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class AndroidBluetoothTransportConnection
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extends AbstractDuplexTransportConnection {
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private final BluetoothSocket socket;
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DroidtoothTransportConnection(Plugin plugin, BluetoothSocket socket) {
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AndroidBluetoothTransportConnection(Plugin plugin, BluetoothSocket socket) {
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super(plugin);
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this.socket = socket;
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}
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@@ -1,490 +0,0 @@
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package org.briarproject.bramble.plugin.droidtooth;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.bluetooth.BluetoothServerSocket;
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import android.bluetooth.BluetoothSocket;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import org.briarproject.bramble.api.FormatException;
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import org.briarproject.bramble.api.contact.ContactId;
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import org.briarproject.bramble.api.data.BdfList;
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import org.briarproject.bramble.api.event.Event;
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import org.briarproject.bramble.api.event.EventListener;
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import org.briarproject.bramble.api.keyagreement.KeyAgreementConnection;
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import org.briarproject.bramble.api.keyagreement.KeyAgreementListener;
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import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
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import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
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import org.briarproject.bramble.api.plugin.Backoff;
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import org.briarproject.bramble.api.plugin.PluginException;
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import org.briarproject.bramble.api.plugin.TransportId;
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import org.briarproject.bramble.api.plugin.duplex.DuplexPlugin;
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import org.briarproject.bramble.api.plugin.duplex.DuplexPluginCallback;
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import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
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import org.briarproject.bramble.api.plugin.event.DisableBluetoothEvent;
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import org.briarproject.bramble.api.plugin.event.EnableBluetoothEvent;
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import org.briarproject.bramble.api.properties.TransportProperties;
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import org.briarproject.bramble.api.system.AndroidExecutor;
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import org.briarproject.bramble.util.AndroidUtils;
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import org.briarproject.bramble.util.StringUtils;
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import java.io.Closeable;
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import java.io.IOException;
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import java.security.SecureRandom;
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import java.util.Collection;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.UUID;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.Executor;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.logging.Logger;
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import javax.annotation.Nullable;
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import static android.bluetooth.BluetoothAdapter.ACTION_SCAN_MODE_CHANGED;
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import static android.bluetooth.BluetoothAdapter.ACTION_STATE_CHANGED;
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import static android.bluetooth.BluetoothAdapter.EXTRA_SCAN_MODE;
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import static android.bluetooth.BluetoothAdapter.EXTRA_STATE;
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import static android.bluetooth.BluetoothAdapter.SCAN_MODE_CONNECTABLE;
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import static android.bluetooth.BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE;
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import static android.bluetooth.BluetoothAdapter.SCAN_MODE_NONE;
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import static android.bluetooth.BluetoothAdapter.STATE_OFF;
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import static android.bluetooth.BluetoothAdapter.STATE_ON;
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import static java.util.logging.Level.INFO;
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import static java.util.logging.Level.WARNING;
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import static org.briarproject.bramble.api.keyagreement.KeyAgreementConstants.TRANSPORT_ID_BLUETOOTH;
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import static org.briarproject.bramble.api.plugin.BluetoothConstants.ID;
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import static org.briarproject.bramble.api.plugin.BluetoothConstants.PREF_BT_ENABLE;
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import static org.briarproject.bramble.api.plugin.BluetoothConstants.PROP_ADDRESS;
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import static org.briarproject.bramble.api.plugin.BluetoothConstants.PROP_UUID;
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import static org.briarproject.bramble.api.plugin.BluetoothConstants.UUID_BYTES;
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import static org.briarproject.bramble.util.PrivacyUtils.scrubMacAddress;
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@MethodsNotNullByDefault
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@ParametersNotNullByDefault
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class DroidtoothPlugin implements DuplexPlugin, EventListener {
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private static final Logger LOG =
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Logger.getLogger(DroidtoothPlugin.class.getName());
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private final Executor ioExecutor;
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private final AndroidExecutor androidExecutor;
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private final Context appContext;
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private final SecureRandom secureRandom;
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private final Backoff backoff;
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private final DuplexPluginCallback callback;
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private final int maxLatency;
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private final AtomicBoolean used = new AtomicBoolean(false);
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private volatile boolean running = false;
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private volatile boolean wasEnabledByUs = false;
|
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private volatile BluetoothStateReceiver receiver = null;
|
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private volatile BluetoothServerSocket socket = null;
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// Non-null if the plugin started successfully
|
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private volatile BluetoothAdapter adapter = null;
|
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|
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DroidtoothPlugin(Executor ioExecutor, AndroidExecutor androidExecutor,
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Context appContext, SecureRandom secureRandom, Backoff backoff,
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DuplexPluginCallback callback, int maxLatency) {
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this.ioExecutor = ioExecutor;
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||||
this.androidExecutor = androidExecutor;
|
||||
this.appContext = appContext;
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this.secureRandom = secureRandom;
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this.backoff = backoff;
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this.callback = callback;
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this.maxLatency = maxLatency;
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}
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@Override
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public TransportId getId() {
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return ID;
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||||
}
|
||||
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||||
@Override
|
||||
public int getMaxLatency() {
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return maxLatency;
|
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}
|
||||
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@Override
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||||
public int getMaxIdleTime() {
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||||
// Bluetooth detects dead connections so we don't need keepalives
|
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return Integer.MAX_VALUE;
|
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}
|
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@Override
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public void start() throws PluginException {
|
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if (used.getAndSet(true)) throw new IllegalStateException();
|
||||
// BluetoothAdapter.getDefaultAdapter() must be called on a thread
|
||||
// with a message queue, so submit it to the AndroidExecutor
|
||||
try {
|
||||
adapter = androidExecutor.runOnBackgroundThread(
|
||||
BluetoothAdapter::getDefaultAdapter).get();
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
LOG.warning("Interrupted while getting BluetoothAdapter");
|
||||
throw new PluginException(e);
|
||||
} catch (ExecutionException e) {
|
||||
throw new PluginException(e);
|
||||
}
|
||||
if (adapter == null) {
|
||||
LOG.info("Bluetooth is not supported");
|
||||
throw new PluginException();
|
||||
}
|
||||
running = true;
|
||||
// Listen for changes to the Bluetooth state
|
||||
IntentFilter filter = new IntentFilter();
|
||||
filter.addAction(ACTION_STATE_CHANGED);
|
||||
filter.addAction(ACTION_SCAN_MODE_CHANGED);
|
||||
receiver = new BluetoothStateReceiver();
|
||||
appContext.registerReceiver(receiver, filter);
|
||||
// If Bluetooth is enabled, bind a socket
|
||||
if (adapter.isEnabled()) {
|
||||
bind();
|
||||
} else {
|
||||
// Enable Bluetooth if settings allow
|
||||
if (callback.getSettings().getBoolean(PREF_BT_ENABLE, false)) {
|
||||
enableAdapter();
|
||||
} else {
|
||||
LOG.info("Not enabling Bluetooth");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void bind() {
|
||||
ioExecutor.execute(() -> {
|
||||
if (!isRunning()) return;
|
||||
String address = AndroidUtils.getBluetoothAddress(appContext,
|
||||
adapter);
|
||||
if (LOG.isLoggable(INFO))
|
||||
LOG.info("Local address " + scrubMacAddress(address));
|
||||
if (!StringUtils.isNullOrEmpty(address)) {
|
||||
// Advertise the Bluetooth address to contacts
|
||||
TransportProperties p = new TransportProperties();
|
||||
p.put(PROP_ADDRESS, address);
|
||||
callback.mergeLocalProperties(p);
|
||||
}
|
||||
// Bind a server socket to accept connections from contacts
|
||||
BluetoothServerSocket ss;
|
||||
try {
|
||||
ss = adapter.listenUsingInsecureRfcommWithServiceRecord(
|
||||
"RFCOMM", getUuid());
|
||||
} catch (IOException e) {
|
||||
if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
|
||||
return;
|
||||
}
|
||||
if (!isRunning()) {
|
||||
tryToClose(ss);
|
||||
return;
|
||||
}
|
||||
LOG.info("Socket bound");
|
||||
socket = ss;
|
||||
backoff.reset();
|
||||
callback.transportEnabled();
|
||||
acceptContactConnections();
|
||||
});
|
||||
}
|
||||
|
||||
private UUID getUuid() {
|
||||
String uuid = callback.getLocalProperties().get(PROP_UUID);
|
||||
if (uuid == null) {
|
||||
byte[] random = new byte[UUID_BYTES];
|
||||
secureRandom.nextBytes(random);
|
||||
uuid = UUID.nameUUIDFromBytes(random).toString();
|
||||
TransportProperties p = new TransportProperties();
|
||||
p.put(PROP_UUID, uuid);
|
||||
callback.mergeLocalProperties(p);
|
||||
}
|
||||
return UUID.fromString(uuid);
|
||||
}
|
||||
|
||||
private void tryToClose(@Nullable BluetoothServerSocket ss) {
|
||||
try {
|
||||
if (ss != null) ss.close();
|
||||
} catch (IOException e) {
|
||||
if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
|
||||
} finally {
|
||||
callback.transportDisabled();
|
||||
}
|
||||
}
|
||||
|
||||
private void acceptContactConnections() {
|
||||
while (isRunning()) {
|
||||
BluetoothSocket s;
|
||||
try {
|
||||
s = socket.accept();
|
||||
} catch (IOException e) {
|
||||
// This is expected when the socket is closed
|
||||
if (LOG.isLoggable(INFO)) LOG.info(e.toString());
|
||||
return;
|
||||
}
|
||||
if (LOG.isLoggable(INFO)) {
|
||||
String address = s.getRemoteDevice().getAddress();
|
||||
LOG.info("Connection from " + scrubMacAddress(address));
|
||||
}
|
||||
backoff.reset();
|
||||
callback.incomingConnectionCreated(wrapSocket(s));
|
||||
}
|
||||
}
|
||||
|
||||
private DuplexTransportConnection wrapSocket(BluetoothSocket s) {
|
||||
return new DroidtoothTransportConnection(this, s);
|
||||
}
|
||||
|
||||
private void enableAdapter() {
|
||||
if (adapter != null && !adapter.isEnabled()) {
|
||||
if (adapter.enable()) {
|
||||
LOG.info("Enabling Bluetooth");
|
||||
wasEnabledByUs = true;
|
||||
} else {
|
||||
LOG.info("Could not enable Bluetooth");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void stop() {
|
||||
running = false;
|
||||
if (receiver != null) appContext.unregisterReceiver(receiver);
|
||||
tryToClose(socket);
|
||||
disableAdapter();
|
||||
}
|
||||
|
||||
private void disableAdapter() {
|
||||
if (adapter != null && adapter.isEnabled() && wasEnabledByUs) {
|
||||
if (adapter.disable()) LOG.info("Disabling Bluetooth");
|
||||
else LOG.info("Could not disable Bluetooth");
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean isRunning() {
|
||||
return running && adapter != null && adapter.isEnabled();
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean shouldPoll() {
|
||||
return true;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getPollingInterval() {
|
||||
return backoff.getPollingInterval();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void poll(Collection<ContactId> connected) {
|
||||
if (!isRunning()) return;
|
||||
backoff.increment();
|
||||
// Try to connect to known devices in parallel
|
||||
Map<ContactId, TransportProperties> remote =
|
||||
callback.getRemoteProperties();
|
||||
for (Entry<ContactId, TransportProperties> e : remote.entrySet()) {
|
||||
ContactId c = e.getKey();
|
||||
if (connected.contains(c)) continue;
|
||||
String address = e.getValue().get(PROP_ADDRESS);
|
||||
if (StringUtils.isNullOrEmpty(address)) continue;
|
||||
String uuid = e.getValue().get(PROP_UUID);
|
||||
if (StringUtils.isNullOrEmpty(uuid)) continue;
|
||||
ioExecutor.execute(() -> {
|
||||
if (!running) return;
|
||||
BluetoothSocket s = connect(address, uuid);
|
||||
if (s != null) {
|
||||
backoff.reset();
|
||||
callback.outgoingConnectionCreated(c, wrapSocket(s));
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
@Nullable
|
||||
private BluetoothSocket connect(String address, String uuid) {
|
||||
// Validate the address
|
||||
if (!BluetoothAdapter.checkBluetoothAddress(address)) {
|
||||
if (LOG.isLoggable(WARNING))
|
||||
// not scrubbing here to be able to figure out the problem
|
||||
LOG.warning("Invalid address " + address);
|
||||
return null;
|
||||
}
|
||||
// Validate the UUID
|
||||
UUID u;
|
||||
try {
|
||||
u = UUID.fromString(uuid);
|
||||
} catch (IllegalArgumentException e) {
|
||||
if (LOG.isLoggable(WARNING)) LOG.warning("Invalid UUID " + uuid);
|
||||
return null;
|
||||
}
|
||||
// Try to connect
|
||||
BluetoothDevice d = adapter.getRemoteDevice(address);
|
||||
BluetoothSocket s = null;
|
||||
try {
|
||||
s = d.createInsecureRfcommSocketToServiceRecord(u);
|
||||
if (LOG.isLoggable(INFO))
|
||||
LOG.info("Connecting to " + scrubMacAddress(address));
|
||||
s.connect();
|
||||
if (LOG.isLoggable(INFO))
|
||||
LOG.info("Connected to " + scrubMacAddress(address));
|
||||
return s;
|
||||
} catch (IOException e) {
|
||||
if (LOG.isLoggable(INFO)) {
|
||||
LOG.info("Failed to connect to " + scrubMacAddress(address)
|
||||
+ ": " + e);
|
||||
}
|
||||
tryToClose(s);
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
private void tryToClose(@Nullable Closeable c) {
|
||||
try {
|
||||
if (c != null) c.close();
|
||||
} catch (IOException e) {
|
||||
if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public DuplexTransportConnection createConnection(ContactId c) {
|
||||
if (!isRunning()) return null;
|
||||
TransportProperties p = callback.getRemoteProperties(c);
|
||||
String address = p.get(PROP_ADDRESS);
|
||||
if (StringUtils.isNullOrEmpty(address)) return null;
|
||||
String uuid = p.get(PROP_UUID);
|
||||
if (StringUtils.isNullOrEmpty(uuid)) return null;
|
||||
BluetoothSocket s = connect(address, uuid);
|
||||
if (s == null) return null;
|
||||
return new DroidtoothTransportConnection(this, s);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean supportsKeyAgreement() {
|
||||
return true;
|
||||
}
|
||||
|
||||
@Override
|
||||
public KeyAgreementListener createKeyAgreementListener(byte[] commitment) {
|
||||
if (!isRunning()) return null;
|
||||
// There's no point listening if we can't discover our own address
|
||||
String address = AndroidUtils.getBluetoothAddress(appContext, adapter);
|
||||
if (address.isEmpty()) return null;
|
||||
// No truncation necessary because COMMIT_LENGTH = 16
|
||||
UUID uuid = UUID.nameUUIDFromBytes(commitment);
|
||||
if (LOG.isLoggable(INFO)) LOG.info("Key agreement UUID " + uuid);
|
||||
// Bind a server socket for receiving key agreement connections
|
||||
BluetoothServerSocket ss;
|
||||
try {
|
||||
ss = adapter.listenUsingInsecureRfcommWithServiceRecord(
|
||||
"RFCOMM", uuid);
|
||||
} catch (IOException e) {
|
||||
if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
|
||||
return null;
|
||||
}
|
||||
BdfList descriptor = new BdfList();
|
||||
descriptor.add(TRANSPORT_ID_BLUETOOTH);
|
||||
descriptor.add(StringUtils.macToBytes(address));
|
||||
return new BluetoothKeyAgreementListener(descriptor, ss);
|
||||
}
|
||||
|
||||
@Override
|
||||
public DuplexTransportConnection createKeyAgreementConnection(
|
||||
byte[] commitment, BdfList descriptor, long timeout) {
|
||||
if (!isRunning()) return null;
|
||||
String address;
|
||||
try {
|
||||
address = parseAddress(descriptor);
|
||||
} catch (FormatException e) {
|
||||
LOG.info("Invalid address in key agreement descriptor");
|
||||
return null;
|
||||
}
|
||||
// No truncation necessary because COMMIT_LENGTH = 16
|
||||
UUID uuid = UUID.nameUUIDFromBytes(commitment);
|
||||
if (LOG.isLoggable(INFO))
|
||||
LOG.info("Connecting to key agreement UUID " + uuid);
|
||||
BluetoothSocket s = connect(address, uuid.toString());
|
||||
if (s == null) return null;
|
||||
return new DroidtoothTransportConnection(this, s);
|
||||
}
|
||||
|
||||
private String parseAddress(BdfList descriptor) throws FormatException {
|
||||
byte[] mac = descriptor.getRaw(1);
|
||||
if (mac.length != 6) throw new FormatException();
|
||||
return StringUtils.macToString(mac);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void eventOccurred(Event e) {
|
||||
if (e instanceof EnableBluetoothEvent) {
|
||||
enableAdapterAsync();
|
||||
} else if (e instanceof DisableBluetoothEvent) {
|
||||
disableAdapterAsync();
|
||||
}
|
||||
}
|
||||
|
||||
private void enableAdapterAsync() {
|
||||
ioExecutor.execute(this::enableAdapter);
|
||||
}
|
||||
|
||||
private void disableAdapterAsync() {
|
||||
ioExecutor.execute(this::disableAdapter);
|
||||
}
|
||||
|
||||
private class BluetoothStateReceiver extends BroadcastReceiver {
|
||||
|
||||
@Override
|
||||
public void onReceive(Context ctx, Intent intent) {
|
||||
int state = intent.getIntExtra(EXTRA_STATE, 0);
|
||||
if (state == STATE_ON) {
|
||||
LOG.info("Bluetooth enabled");
|
||||
bind();
|
||||
} else if (state == STATE_OFF) {
|
||||
LOG.info("Bluetooth disabled");
|
||||
tryToClose(socket);
|
||||
}
|
||||
int scanMode = intent.getIntExtra(EXTRA_SCAN_MODE, 0);
|
||||
if (scanMode == SCAN_MODE_NONE) {
|
||||
LOG.info("Scan mode: None");
|
||||
} else if (scanMode == SCAN_MODE_CONNECTABLE) {
|
||||
LOG.info("Scan mode: Connectable");
|
||||
} else if (scanMode == SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
|
||||
LOG.info("Scan mode: Discoverable");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private class BluetoothKeyAgreementListener extends KeyAgreementListener {
|
||||
|
||||
private final BluetoothServerSocket ss;
|
||||
|
||||
private BluetoothKeyAgreementListener(BdfList descriptor,
|
||||
BluetoothServerSocket ss) {
|
||||
super(descriptor);
|
||||
this.ss = ss;
|
||||
}
|
||||
|
||||
@Override
|
||||
public Callable<KeyAgreementConnection> listen() {
|
||||
return () -> {
|
||||
BluetoothSocket s = ss.accept();
|
||||
if (LOG.isLoggable(INFO))
|
||||
LOG.info(ID.getString() + ": Incoming connection");
|
||||
return new KeyAgreementConnection(
|
||||
new DroidtoothTransportConnection(
|
||||
DroidtoothPlugin.this, s), ID);
|
||||
};
|
||||
}
|
||||
|
||||
@Override
|
||||
public void close() {
|
||||
try {
|
||||
ss.close();
|
||||
} catch (IOException e) {
|
||||
if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user