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 
BluetoothPbapObexAuthenticator(Handler callback)35     public BluetoothPbapObexAuthenticator(Handler callback) {
36         mCallback = callback;
37     }
38 
setReply(String key)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
onAuthenticationChallenge(String description, boolean isUserIdRequired, boolean isFullAccess)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
onAuthenticationResponse(byte[] userName)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