1 /*
2  * Copyright (c) 2008-2009, Motorola, Inc.
3  *
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * - Redistributions of source code must retain the above copyright notice,
10  * this list of conditions and the following disclaimer.
11  *
12  * - Redistributions in binary form must reproduce the above copyright notice,
13  * this list of conditions and the following disclaimer in the documentation
14  * and/or other materials provided with the distribution.
15  *
16  * - Neither the name of the Motorola, Inc. nor the names of its contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 package com.android.bluetooth.pbap;
34 
35 import android.util.Log;
36 
37 import javax.obex.Authenticator;
38 import javax.obex.PasswordAuthentication;
39 
40 /**
41  * BluetoothPbapAuthenticator is a used by BluetoothObexServer for obex
42  * authentication procedure.
43  */
44 public class BluetoothPbapAuthenticator implements Authenticator {
45     private static final String TAG = "PbapAuthenticator";
46 
47     private boolean mChallenged;
48     private boolean mAuthCancelled;
49     private String mSessionKey;
50     private PbapStateMachine mPbapStateMachine;
51 
BluetoothPbapAuthenticator(final PbapStateMachine stateMachine)52     BluetoothPbapAuthenticator(final PbapStateMachine stateMachine) {
53         mPbapStateMachine = stateMachine;
54         mChallenged = false;
55         mAuthCancelled = false;
56         mSessionKey = null;
57     }
58 
setChallenged(final boolean bool)59     final synchronized void setChallenged(final boolean bool) {
60         mChallenged = bool;
61         notify();
62     }
63 
setCancelled(final boolean bool)64     final synchronized void setCancelled(final boolean bool) {
65         mAuthCancelled = bool;
66         notify();
67     }
68 
setSessionKey(final String string)69     final synchronized void setSessionKey(final String string) {
70         mSessionKey = string;
71     }
72 
waitUserConfirmation()73     private void waitUserConfirmation() {
74         mPbapStateMachine.sendMessage(PbapStateMachine.CREATE_NOTIFICATION);
75         mPbapStateMachine.sendMessageDelayed(PbapStateMachine.REMOVE_NOTIFICATION,
76                 BluetoothPbapService.USER_CONFIRM_TIMEOUT_VALUE);
77         synchronized (this) {
78             while (!mChallenged && !mAuthCancelled) {
79                 try {
80                     wait();
81                 } catch (InterruptedException e) {
82                     Log.e(TAG, "Interrupted while waiting on isChallenged or AuthCancelled");
83                 }
84             }
85         }
86     }
87 
88     @Override
onAuthenticationChallenge(final String description, final boolean isUserIdRequired, final boolean isFullAccess)89     public PasswordAuthentication onAuthenticationChallenge(final String description,
90             final boolean isUserIdRequired, final boolean isFullAccess) {
91         waitUserConfirmation();
92         if (mSessionKey.trim().length() != 0) {
93             return new PasswordAuthentication(null, mSessionKey.getBytes());
94         }
95         return null;
96     }
97 
98     // TODO: Reserved for future use only, in case PSE challenge PCE
99     @Override
onAuthenticationResponse(final byte[] userName)100     public byte[] onAuthenticationResponse(final byte[] userName) {
101         byte[] b = null;
102         return b;
103     }
104 }
105