Bluetooth: DUN: Add framework changes to support DUN

Bluetooth DUN profile APIs added to the framework APIs.
As DUN server supports only disconnection of DUN profile
level connection this API is implemeted along with other
APIs.

It registers bluetooth state changed callback with the
adapter service,once there is a change in the bluetooth
state,it will bind/unbind the DUN service which is
implemented in BluetoothExt.APK.

DUN service, and other DUN Application layer are mplemented
in BluetoothExt.APK.

Change-Id: I6ce1204ac6138e28ad7486f2855f0f7444ad3886

Android.mk

@@ -106,6 +106,7 @@ LOCAL_SRC_FILES += \
 	core/java/android/bluetooth/IBluetoothGattCallback.aidl \
 	core/java/android/bluetooth/IBluetoothGattServerCallback.aidl \
 	core/java/android/bluetooth/IBluetoothSap.aidl \
+	core/java/android/bluetooth/IBluetoothDun.aidl \
 	core/java/android/content/IClipboard.aidl \
 	core/java/android/content/IContentService.aidl \
 	core/java/android/content/IIntentReceiver.aidl \

core/java/android/bluetooth/BluetoothAdapter.java

@@ -1183,6 +1183,9 @@ public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener
         } else if (profile == BluetoothProfile.SAP) {
             BluetoothSap sap = new BluetoothSap(context, listener);
             return true;
+        } else if (profile == BluetoothProfile.DUN) {
+            BluetoothDun dun = new BluetoothDun(context, listener);
+            return true;
         } else if (profile == BluetoothProfile.HEALTH) {
             BluetoothHealth health = new BluetoothHealth(context, listener);
             return true;
@@ -1229,6 +1232,10 @@ public void closeProfileProxy(int profile, BluetoothProfile proxy) {
                 BluetoothSap sap = (BluetoothSap)proxy;
                 sap.close();
                 break;
+            case BluetoothProfile.DUN:
+                BluetoothDun dun = (BluetoothDun)proxy;
+                dun.close();
+                break;
             case BluetoothProfile.HEALTH:
                 BluetoothHealth health = (BluetoothHealth)proxy;
                 health.close();

core/java/android/bluetooth/BluetoothDun.java

@@ -0,0 +1,280 @@
+/*
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *        * Redistributions of source code must retain the above copyright
+ *            notice, this list of conditions and the following disclaimer.
+ *        * Redistributions in binary form must reproduce the above copyright
+ *            notice, this list of conditions and the following disclaimer in the
+ *            documentation and/or other materials provided with the distribution.
+ *        * Neither the name of The Linux Foundation nor
+ *            the names of its contributors may be used to endorse or promote
+ *            products derived from this software without specific prior written
+ *            permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT ARE DISCLAIMED.    IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package android.bluetooth;
+
+import android.annotation.SdkConstant;
+import android.annotation.SdkConstant.SdkConstantType;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This class provides the APIs to control the Bluetooth Dun
+ * Profile.
+ *
+ *<p>BluetoothDun is a proxy object for controlling the Bluetooth DUN
+ * Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get
+ * the BluetoothDun proxy object.
+ *
+ *<p>Each method is protected with its appropriate permission.
+ *@hide
+ */
+public final class BluetoothDun implements BluetoothProfile {
+    private static final String TAG = "BluetoothDun";
+    private static final boolean DBG = false;
+    private static final boolean VDBG = false;
+
+    /**
+     * Intent used to broadcast the change in connection state of the Dun
+     * profile.
+     *
+     * <p>This intent will have 3 extras:
+     * <ul>
+     *   <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
+     *   <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.</li>
+     *   <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
+     * </ul>
+     *
+     * <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
+     * {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTED}.
+     *
+     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to
+     * receive.
+     */
+    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String ACTION_CONNECTION_STATE_CHANGED =
+        "codeaurora.bluetooth.dun.profile.action.CONNECTION_STATE_CHANGED";
+
+    private Context mContext;
+    private ServiceListener mServiceListener;
+    private BluetoothAdapter mAdapter;
+    private IBluetoothDun mDunService;
+
+    /**
+     * Create a BluetoothDun proxy object for interacting with the local
+     * Bluetooth Service which handles the Dun profile
+     *
+     */
+    /*package*/ BluetoothDun(Context context, ServiceListener l) {
+        mContext = context;
+        mServiceListener = l;
+        mAdapter = BluetoothAdapter.getDefaultAdapter();
+        try {
+            mAdapter.getBluetoothManager().registerStateChangeCallback(mStateChangeCallback);
+        } catch (RemoteException re) {
+            Log.w(TAG,"Unable to register BluetoothStateChangeCallback",re);
+        }
+        Log.d(TAG, "BluetoothDun() call bindService");
+        if (!context.bindService(new Intent(IBluetoothDun.class.getName()),
+                                 mConnection, 0)) {
+            Log.e(TAG, "Could not bind to Bluetooth DUN Service");
+        }
+        Log.d(TAG, "BluetoothDun(), bindService called");
+    }
+
+    /*package*/ void close() {
+        if (VDBG) log("close()");
+        mServiceListener = null;
+        IBluetoothManager mgr = mAdapter.getBluetoothManager();
+        if (mgr != null) {
+            try {
+                mgr.unregisterStateChangeCallback(mStateChangeCallback);
+            } catch (RemoteException re) {
+                Log.w(TAG,"Unable to unregister BluetoothStateChangeCallback",re);
+            }
+        }
+
+        synchronized (mConnection) {
+            if ( mDunService != null) {
+                try {
+                    mDunService = null;
+                    mContext.unbindService(mConnection);
+                } catch (Exception re) {
+                    Log.e(TAG,"",re);
+                }
+            }
+        }
+    }
+
+    protected void finalize() {
+        close();
+    }
+
+    private IBluetoothStateChangeCallback mStateChangeCallback =
+                                    new IBluetoothStateChangeCallback.Stub() {
+
+        @Override
+        public void onBluetoothStateChange(boolean on) throws RemoteException {
+            //Handle enable request to bind again.
+            if (on) {
+                Log.d(TAG, "onBluetoothStateChange(on) call bindService");
+                if (!mContext.bindService(new Intent(IBluetoothDun.class.getName()),
+                                     mConnection, 0)) {
+                    Log.e(TAG, "Could not bind to Bluetooth DUN Service");
+                }
+                Log.d(TAG, "BluetoothDun(), bindService called");
+            } else {
+                if (VDBG) Log.d(TAG,"Unbinding service...");
+                synchronized (mConnection) {
+                    if ( mDunService != null) {
+                        try {
+                            mDunService = null;
+                            mContext.unbindService(mConnection);
+                        } catch (Exception re) {
+                            Log.e(TAG,"",re);
+                        }
+                    }
+                }
+            }
+        }
+    };
+
+    /**
+     * Initiate disconnection from DUN server.
+     *
+     * <p> Once the disconnection is initiated by any device either local host
+     * or remote device, the state will transition from {@link #STATE_CONNECTED}
+     * to {@link #STATE_DISCONNECTED}.
+     *
+     * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
+     * permission.
+     *
+     * @param device Remote Bluetooth Device
+     * @return false on immediate error,
+     *               true otherwise
+     * @hide
+     */
+    public boolean disconnect(BluetoothDevice device) {
+        if (DBG) log("disconnect(" + device + ")");
+        if (mDunService != null && isEnabled() &&
+            isValidDevice(device)) {
+            try {
+                return mDunService.disconnect(device);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+                return false;
+            }
+        }
+        if (mDunService == null) Log.w(TAG, "Proxy not attached to service");
+        return false;
+    }
+    /**
+     * {@inheritDoc}
+     */
+    public List<BluetoothDevice> getConnectedDevices() {
+        if (VDBG) log("getConnectedDevices()");
+        if (mDunService != null && isEnabled()) {
+            try {
+                return mDunService.getConnectedDevices();
+            } catch (RemoteException e) {
+                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+                return new ArrayList<BluetoothDevice>();
+            }
+        }
+        if (mDunService == null) Log.w(TAG, "Proxy not attached to service");
+        return new ArrayList<BluetoothDevice>();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
+        if (VDBG) log("getDevicesMatchingStates()");
+        if (mDunService != null && isEnabled()) {
+            try {
+                return mDunService.getDevicesMatchingConnectionStates(states);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+                return new ArrayList<BluetoothDevice>();
+            }
+        }
+        if (mDunService == null) Log.w(TAG, "Proxy not attached to service");
+        return new ArrayList<BluetoothDevice>();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getConnectionState(BluetoothDevice device) {
+        if (VDBG) log("getState(" + device + ")");
+        if (mDunService != null && isEnabled()
+            && isValidDevice(device)) {
+            try {
+                return mDunService.getConnectionState(device);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+                return BluetoothProfile.STATE_DISCONNECTED;
+            }
+        }
+        if (mDunService == null) Log.w(TAG, "Proxy not attached to service");
+        return BluetoothProfile.STATE_DISCONNECTED;
+    }
+
+    private ServiceConnection mConnection = new ServiceConnection() {
+        public void onServiceConnected(ComponentName className, IBinder service) {
+            if (DBG) Log.d(TAG, "BluetoothDUN Proxy object connected");
+            mDunService = IBluetoothDun.Stub.asInterface(service);
+
+            if (mServiceListener != null) {
+                mServiceListener.onServiceConnected(BluetoothProfile.DUN,
+                                                    BluetoothDun.this);
+            }
+        }
+        public void onServiceDisconnected(ComponentName className) {
+            if (DBG) Log.d(TAG, "BluetoothDUN Proxy object disconnected");
+            mDunService = null;
+            if (mServiceListener != null) {
+                mServiceListener.onServiceDisconnected(BluetoothProfile.DUN);
+            }
+        }
+    };
+
+    private boolean isEnabled() {
+       if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true;
+       return false;
+    }
+
+    private boolean isValidDevice(BluetoothDevice device) {
+       if (device == null) return false;
+
+       if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true;
+       return false;
+    }
+
+    private static void log(String msg) {
+      Log.d(TAG, msg);
+    }
+}

core/java/android/bluetooth/BluetoothProfile.java

@@ -111,6 +111,12 @@ public interface BluetoothProfile {
      */
     public static final int HANDSFREE_CLIENT = 9;
 
+    /**
+     * DUN
+     * @hide
+     */
+    public static final int DUN = 21;
+
     /**
      * Default priority for devices that we try to auto-connect to and
      * and allow incoming connections for the profile

core/java/android/bluetooth/IBluetoothDun.aidl

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *        * Redistributions of source code must retain the above copyright
+ *            notice, this list of conditions and the following disclaimer.
+ *        * Redistributions in binary form must reproduce the above copyright
+ *            notice, this list of conditions and the following disclaimer in the
+ *            documentation and/or other materials provided with the distribution.
+ *        * Neither the name of The Linux Foundation nor
+ *            the names of its contributors may be used to endorse or promote
+ *            products derived from this software without specific prior written
+ *            permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT ARE DISCLAIMED.    IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package android.bluetooth;
+
+import android.bluetooth.BluetoothDevice;
+
+/**
+ * API for Bluetooth Dun service
+ *
+ * {@hide}
+ */
+interface IBluetoothDun {
+    // Public API
+    boolean disconnect(in BluetoothDevice device);
+    int getConnectionState(in BluetoothDevice device);
+    List<BluetoothDevice> getConnectedDevices();
+    List<BluetoothDevice> getDevicesMatchingConnectionStates(in int[] states);
+}