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Code Issues Projects Releases Wiki Activity

Discover BT devices if no address is provided.

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This commit is contained in:
akwizgran
2018-06-22 18:13:39 +01:00
parent 8935ec2c2e
commit de611857cf
4 changed files with 114 additions and 15 deletions
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85
bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothPlugin.java
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@@ -21,13 +21,19 @@ import org.briarproject.bramble.util.AndroidUtils;
import java.io.Closeable;
import java.io.IOException;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.Collection;
import java.util.UUID;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.logging.Logger;
import javax.annotation.Nullable;
import static android.bluetooth.BluetoothAdapter.ACTION_DISCOVERY_FINISHED;
import static android.bluetooth.BluetoothAdapter.ACTION_DISCOVERY_STARTED;
import static android.bluetooth.BluetoothAdapter.ACTION_SCAN_MODE_CHANGED;
import static android.bluetooth.BluetoothAdapter.ACTION_STATE_CHANGED;
import static android.bluetooth.BluetoothAdapter.EXTRA_SCAN_MODE;
@@ -37,8 +43,12 @@ import static android.bluetooth.BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERA
import static android.bluetooth.BluetoothAdapter.SCAN_MODE_NONE;
import static android.bluetooth.BluetoothAdapter.STATE_OFF;
import static android.bluetooth.BluetoothAdapter.STATE_ON;
import static android.bluetooth.BluetoothDevice.ACTION_FOUND;
import static android.bluetooth.BluetoothDevice.EXTRA_DEVICE;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import static org.briarproject.bramble.util.LogUtils.logException;
import static org.briarproject.bramble.util.PrivacyUtils.scrubMacAddress;
@MethodsNotNullByDefault
@ParametersNotNullByDefault
@@ -182,6 +192,67 @@ class AndroidBluetoothPlugin extends BluetoothPlugin<BluetoothServerSocket> {
}
}
@Override
@Nullable
DuplexTransportConnection discoverAndConnect(String uuid) {
if (adapter == null) return null;
for (String address : discoverDevices()) {
try {
if (LOG.isLoggable(INFO))
LOG.info("Connecting to " + scrubMacAddress(address));
return connectTo(address, uuid);
} catch (IOException e) {
if (LOG.isLoggable(INFO)) {
LOG.info("Could not connect to "
+ scrubMacAddress(address));
}
}
}
LOG.info("Could not connect to any devices");
return null;
}
private Collection<String> discoverDevices() {
Collection<String> addresses = new ArrayList<>();
BlockingQueue<Intent> intents = new LinkedBlockingQueue<>();
DiscoveryReceiver receiver = new DiscoveryReceiver(intents);
IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_DISCOVERY_STARTED);
filter.addAction(ACTION_DISCOVERY_FINISHED);
filter.addAction(ACTION_FOUND);
appContext.registerReceiver(receiver, filter);
try {
if (adapter.startDiscovery()) {
while (true) {
Intent i = intents.take();
String action = i.getAction();
if (ACTION_DISCOVERY_STARTED.equals(action)) {
LOG.info("Discovery started");
} else if (ACTION_DISCOVERY_FINISHED.equals(action)) {
LOG.info("Discovery finished");
break;
} else if (ACTION_FOUND.equals(action)) {
BluetoothDevice d = i.getParcelableExtra(EXTRA_DEVICE);
String address = d.getAddress();
if (LOG.isLoggable(INFO))
LOG.info("Discovered " + scrubMacAddress(address));
if (!addresses.contains(address))
addresses.add(address);
}
}
} else {
LOG.info("Could not start discovery");
}
} catch (InterruptedException e) {
LOG.info("Interrupted while discovering devices");
Thread.currentThread().interrupt();
} finally {
adapter.cancelDiscovery();
appContext.unregisterReceiver(receiver);
}
return addresses;
}
private void tryToClose(@Nullable Closeable c) {
try {
if (c != null) c.close();
@@ -207,4 +278,18 @@ class AndroidBluetoothPlugin extends BluetoothPlugin<BluetoothServerSocket> {
}
}
}
private static class DiscoveryReceiver extends BroadcastReceiver {
private final BlockingQueue<Intent> intents;
private DiscoveryReceiver(BlockingQueue<Intent> intents) {
this.intents = intents;
}
@Override
public void onReceive(Context ctx, Intent intent) {
intents.add(intent);
}
}
}