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 static final String TAG = "BtPbapObexAuthenticator";
34     private static final boolean DBG = Utils.DBG;
35 
36     //Default session key for legacy devices is 0000
37     private String mSessionKey = "0000";
38 
39     private final Handler mCallback;
40 
BluetoothPbapObexAuthenticator(Handler callback)41     BluetoothPbapObexAuthenticator(Handler callback) {
42         mCallback = callback;
43     }
44 
45     @Override
onAuthenticationChallenge(String description, boolean isUserIdRequired, boolean isFullAccess)46     public PasswordAuthentication onAuthenticationChallenge(String description,
47             boolean isUserIdRequired, boolean isFullAccess) {
48         PasswordAuthentication pa = null;
49         if (DBG) Log.v(TAG, "onAuthenticationChallenge: starting");
50 
51         if (mSessionKey != null && mSessionKey.length() != 0) {
52             if (DBG) Log.v(TAG, "onAuthenticationChallenge: mSessionKey=" + mSessionKey);
53             pa = new PasswordAuthentication(null, mSessionKey.getBytes());
54         } else {
55             if (DBG) {
56                 Log.v(TAG,
57                         "onAuthenticationChallenge: mSessionKey is empty, timeout/cancel occured");
58             }
59         }
60 
61         return pa;
62     }
63 
64     @Override
onAuthenticationResponse(byte[] userName)65     public byte[] onAuthenticationResponse(byte[] userName) {
66         if (DBG) Log.v(TAG, "onAuthenticationResponse: " + userName);
67         /* required only in case PCE challenges PSE which we don't do now */
68         return null;
69     }
70 
71 }
72