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 /* ObexAuthentication is a required component for PBAP in order to support backwards compatibility
26  * with PSE devices prior to PBAP 1.2. With profiles prior to 1.2 the actual initiation of
27  * authentication is implementation defined.
28  */
29 
30 
31 class BluetoothPbapObexAuthenticator implements Authenticator {
32 
33     private final static String TAG = "BluetoothPbapObexAuthenticator";
34 
35     //Default session key for legacy devices is 0000
36     private String mSessionKey = "0000";
37 
38     private final Handler mCallback;
39 
BluetoothPbapObexAuthenticator(Handler callback)40     public BluetoothPbapObexAuthenticator(Handler callback) {
41         mCallback = callback;
42     }
43 
44     @Override
onAuthenticationChallenge(String description, boolean isUserIdRequired, boolean isFullAccess)45     public PasswordAuthentication onAuthenticationChallenge(String description,
46             boolean isUserIdRequired, boolean isFullAccess) {
47         PasswordAuthentication pa = null;
48         Log.v(TAG, "onAuthenticationChallenge: starting");
49 
50         if (mSessionKey != null && mSessionKey.length() != 0) {
51             Log.v(TAG, "onAuthenticationChallenge: mSessionKey=" + mSessionKey);
52             pa = new PasswordAuthentication(null, mSessionKey.getBytes());
53         } else {
54             Log.v(TAG, "onAuthenticationChallenge: mSessionKey is empty, timeout/cancel occured");
55         }
56 
57         return pa;
58     }
59 
60     @Override
onAuthenticationResponse(byte[] userName)61     public byte[] onAuthenticationResponse(byte[] userName) {
62         Log.v(TAG, "onAuthenticationResponse: " + userName);
63         /* required only in case PCE challenges PSE which we don't do now */
64         return null;
65     }
66 
67 }
68