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.os.Handler;
36 import android.os.Message;
37 import android.util.Log;
38 
39 import javax.obex.Authenticator;
40 import javax.obex.PasswordAuthentication;
41 
42 /**
43  * BluetoothPbapAuthenticator is a used by BluetoothObexServer for obex
44  * authentication procedure.
45  */
46 public class BluetoothPbapAuthenticator implements Authenticator {
47     private static final String TAG = "BluetoothPbapAuthenticator";
48 
49     private boolean mChallenged;
50 
51     private boolean mAuthCancelled;
52 
53     private String mSessionKey;
54 
55     private Handler mCallback;
56 
BluetoothPbapAuthenticator(final Handler callback)57     public BluetoothPbapAuthenticator(final Handler callback) {
58         mCallback = callback;
59         mChallenged = false;
60         mAuthCancelled = false;
61         mSessionKey = null;
62     }
63 
setChallenged(final boolean bool)64     public final synchronized void setChallenged(final boolean bool) {
65         mChallenged = bool;
66     }
67 
setCancelled(final boolean bool)68     public final synchronized void setCancelled(final boolean bool) {
69         mAuthCancelled = bool;
70     }
71 
setSessionKey(final String string)72     public final synchronized void setSessionKey(final String string) {
73         mSessionKey = string;
74     }
75 
waitUserConfirmation()76     private void waitUserConfirmation() {
77         Message msg = Message.obtain(mCallback);
78         msg.what = BluetoothPbapService.MSG_OBEX_AUTH_CHALL;
79         msg.sendToTarget();
80         synchronized (this) {
81             while (!mChallenged && !mAuthCancelled) {
82                 try {
83                     wait();
84                 } catch (InterruptedException e) {
85                     Log.e(TAG, "Interrupted while waiting on isChalled");
86                 }
87             }
88         }
89     }
90 
onAuthenticationChallenge(final String description, final boolean isUserIdRequired, final boolean isFullAccess)91     public PasswordAuthentication onAuthenticationChallenge(final String description,
92             final boolean isUserIdRequired, final boolean isFullAccess) {
93         waitUserConfirmation();
94         if (mSessionKey.trim().length() != 0) {
95             PasswordAuthentication pa = new PasswordAuthentication(null, mSessionKey.getBytes());
96             return pa;
97         }
98         return null;
99     }
100 
101     // TODO: Reserved for future use only, in case PSE challenge PCE
onAuthenticationResponse(final byte[] userName)102     public byte[] onAuthenticationResponse(final byte[] userName) {
103         byte[] b = null;
104         return b;
105     }
106 }
107