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Code Issues Projects Releases Wiki Activity

Cleaned up Android Bluetooth reflection code and added logging.

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This commit is contained in:
akwizgran
2013-03-11 10:35:14 +00:00
parent a02ca4b356
commit cd5d922b5e
1 changed files with 29 additions and 20 deletions
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49
briar-core/src/net/sf/briar/plugins/droidtooth/InsecureBluetooth.java
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@@ -1,11 +1,14 @@
package net.sf.briar.plugins.droidtooth;
import static java.util.logging.Level.INFO;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.UUID;
import java.util.logging.Logger;
import android.annotation.SuppressLint;
import android.bluetooth.BluetoothAdapter;
@@ -21,16 +24,22 @@ import android.os.ParcelUuid;
// Based on http://stanford.edu/~tpurtell/InsecureBluetooth.java by T.J. Purtell
class InsecureBluetooth {
private static final Logger LOG =
Logger.getLogger(InsecureBluetooth.class.getName());
private static final int TYPE_RFCOMM = 1;
@SuppressLint("NewApi")
static BluetoothServerSocket listen(BluetoothAdapter adapter, String name,
UUID uuid) throws IOException {
if(Build.VERSION.SDK_INT >= 10) {
if(LOG.isLoggable(INFO)) LOG.info("Listening with new API");
return adapter.listenUsingInsecureRfcommWithServiceRecord(name,
uuid);
}
try {
if(LOG.isLoggable(INFO)) LOG.info("Listening via reflection");
// Find an available channel
String className = BluetoothAdapter.class.getName()
+ ".RfcommChannelPicker";
Class<?> channelPickerClass = null;
@@ -48,15 +57,15 @@ class InsecureBluetooth {
if(constructor == null)
throw new IOException("Can't find channel picker constructor");
Object channelPicker = constructor.newInstance(uuid);
Method nextChannel = channelPickerClass.getDeclaredMethod(
"nextChannel", new Class[0]);
Method nextChannel =
channelPickerClass.getDeclaredMethod("nextChannel");
nextChannel.setAccessible(true);
BluetoothServerSocket socket = null;
int channel = (Integer) nextChannel.invoke(channelPicker,
new Object[0]);
int channel = (Integer) nextChannel.invoke(channelPicker);
if(channel == -1) throw new IOException("No available channels");
socket = listen(channel);
Field f = adapter.getClass().getDeclaredField("mService");
// Listen on the channel
BluetoothServerSocket socket = listen(channel);
// Add a service record
Field f = BluetoothAdapter.class.getDeclaredField("mService");
f.setAccessible(true);
Object mService = f.get(adapter);
Method addRfcommServiceRecord =
@@ -70,7 +79,7 @@ class InsecureBluetooth {
socket.close();
throw new IOException("Can't register SDP record for " + name);
}
Field f1 = adapter.getClass().getDeclaredField("mHandler");
Field f1 = BluetoothAdapter.class.getDeclaredField("mHandler");
f1.setAccessible(true);
Object mHandler = f1.get(adapter);
Method setCloseHandler = socket.getClass().getDeclaredMethod(
@@ -96,7 +105,6 @@ class InsecureBluetooth {
}
private static BluetoothServerSocket listen(int port) throws IOException {
BluetoothServerSocket socket = null;
try {
Constructor<BluetoothServerSocket> constructor =
BluetoothServerSocket.class.getDeclaredConstructor(
@@ -104,15 +112,15 @@ class InsecureBluetooth {
if(constructor == null)
throw new IOException("Can't find server socket constructor");
constructor.setAccessible(true);
socket = constructor.newInstance(TYPE_RFCOMM, false, false, port);
Field f = socket.getClass().getDeclaredField("mSocket");
BluetoothServerSocket socket = constructor.newInstance(TYPE_RFCOMM,
false, false, port);
Field f = BluetoothServerSocket.class.getDeclaredField("mSocket");
f.setAccessible(true);
Object mSocket = f.get(socket);
Method bindListen = mSocket.getClass().getDeclaredMethod(
"bindListen", new Class[0]);
Method bindListen =
mSocket.getClass().getDeclaredMethod("bindListen");
bindListen.setAccessible(true);
Object result = bindListen.invoke(mSocket, new Object[0]);
int errno = (Integer) result;
int errno = (Integer) bindListen.invoke(mSocket);
if(errno != 0) {
socket.close();
throw new IOException("Can't bind: errno " + errno);
@@ -138,10 +146,12 @@ class InsecureBluetooth {
@SuppressLint("NewApi")
static BluetoothSocket createSocket(BluetoothDevice device, UUID uuid)
throws IOException {
if(Build.VERSION.SDK_INT >= 10)
if(Build.VERSION.SDK_INT >= 10) {
if(LOG.isLoggable(INFO)) LOG.info("Creating socket with new API");
return device.createInsecureRfcommSocketToServiceRecord(uuid);
}
try {
BluetoothSocket socket = null;
if(LOG.isLoggable(INFO)) LOG.info("Creating socket via reflection");
Constructor<BluetoothSocket> constructor =
BluetoothSocket.class.getDeclaredConstructor(int.class,
int.class, boolean.class, boolean.class,
@@ -149,9 +159,8 @@ class InsecureBluetooth {
if(constructor == null)
throw new IOException("Can't find socket constructor");
constructor.setAccessible(true);
socket = constructor.newInstance(TYPE_RFCOMM, -1, false, true,
device, -1, uuid != null ? new ParcelUuid(uuid) : null);
return socket;
return constructor.newInstance(TYPE_RFCOMM, -1, false, true, device,
-1, new ParcelUuid(uuid));
} catch(NoSuchMethodException e) {
throw new IOException(e.toString());
} catch(IllegalAccessException e) {