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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.bluetooth.pbapclient;
     18 
     19 import android.os.Handler;
     20 import android.util.Log;
     21 
     22 import javax.obex.Authenticator;
     23 import javax.obex.PasswordAuthentication;
     24 
     25 class BluetoothPbapObexAuthenticator implements Authenticator {
     26 
     27     private final static String TAG = "BluetoothPbapObexAuthenticator";
     28 
     29     private String mSessionKey;
     30 
     31     private boolean mReplied;
     32 
     33     private final Handler mCallback;
     34 
     35     public BluetoothPbapObexAuthenticator(Handler callback) {
     36         mCallback = callback;
     37     }
     38 
     39     public synchronized void setReply(String key) {
     40         Log.d(TAG, "setReply key=" + key);
     41 
     42         mSessionKey = key;
     43         mReplied = true;
     44 
     45         notify();
     46     }
     47 
     48     @Override
     49     public PasswordAuthentication onAuthenticationChallenge(String description,
     50             boolean isUserIdRequired, boolean isFullAccess) {
     51         PasswordAuthentication pa = null;
     52 
     53         mReplied = false;
     54 
     55         Log.d(TAG, "onAuthenticationChallenge: sending request");
     56         mCallback.obtainMessage(BluetoothPbapObexSession.OBEX_SESSION_AUTHENTICATION_REQUEST)
     57                 .sendToTarget();
     58 
     59         synchronized (this) {
     60             while (!mReplied) {
     61                 try {
     62                     Log.v(TAG, "onAuthenticationChallenge: waiting for response");
     63                     this.wait();
     64                 } catch (InterruptedException e) {
     65                     Log.e(TAG, "Interrupted while waiting for challenge response");
     66                 }
     67             }
     68         }
     69 
     70         if (mSessionKey != null && mSessionKey.length() != 0) {
     71             Log.v(TAG, "onAuthenticationChallenge: mSessionKey=" + mSessionKey);
     72             pa = new PasswordAuthentication(null, mSessionKey.getBytes());
     73         } else {
     74             Log.v(TAG, "onAuthenticationChallenge: mSessionKey is empty, timeout/cancel occured");
     75         }
     76 
     77         return pa;
     78     }
     79 
     80     @Override
     81     public byte[] onAuthenticationResponse(byte[] userName) {
     82         /* required only in case PCE challenges PSE which we don't do now */
     83         return null;
     84     }
     85 
     86 }
     87