Home | History | Annotate | Download | only in pbap 
      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 com.android.bluetooth.R;
     36 
     37 import android.content.BroadcastReceiver;
     38 import android.content.Context;
     39 import android.content.DialogInterface;
     40 import android.content.Intent;
     41 import android.content.IntentFilter;
     42 import android.os.Bundle;
     43 import android.os.Handler;
     44 import android.os.Message;
     45 import android.preference.Preference;
     46 import android.text.InputFilter;
     47 import android.text.TextWatcher;
     48 import android.text.InputFilter.LengthFilter;
     49 import android.util.Log;
     50 import android.view.View;
     51 import android.widget.CheckBox;
     52 import android.widget.EditText;
     53 import android.widget.TextView;
     54 import android.widget.Button;
     55 
     56 import com.android.internal.app.AlertActivity;
     57 import com.android.internal.app.AlertController;
     58 
     59 /**
     60  * PbapActivity shows two dialogues: One for accepting incoming pbap request and
     61  * the other prompts the user to enter a session key for authentication with a
     62  * remote Bluetooth device.
     63  */
     64 public class BluetoothPbapActivity extends AlertActivity implements
     65         DialogInterface.OnClickListener, Preference.OnPreferenceChangeListener, TextWatcher {
     66     private static final String TAG = "BluetoothPbapActivity";
     67 
     68     private static final boolean V = BluetoothPbapService.VERBOSE;
     69 
     70     private static final int BLUETOOTH_OBEX_AUTHKEY_MAX_LENGTH = 16;
     71 
     72     private static final int DIALOG_YES_NO_AUTH = 1;
     73 
     74     private static final String KEY_USER_TIMEOUT = "user_timeout";
     75 
     76     private View mView;
     77 
     78     private EditText mKeyView;
     79 
     80     private TextView messageView;
     81 
     82     private String mSessionKey = "";
     83 
     84     private int mCurrentDialog;
     85 
     86     private Button mOkButton;
     87 
     88     private CheckBox mAlwaysAllowed;
     89 
     90     private boolean mTimeout = false;
     91 
     92     private boolean mAlwaysAllowedValue = true;
     93 
     94     private static final int DISMISS_TIMEOUT_DIALOG = 0;
     95 
     96     private static final int DISMISS_TIMEOUT_DIALOG_VALUE = 2000;
     97 
     98     private BroadcastReceiver mReceiver = new BroadcastReceiver() {
     99         @Override
    100         public void onReceive(Context context, Intent intent) {
    101             if (!BluetoothPbapService.USER_CONFIRM_TIMEOUT_ACTION.equals(intent.getAction())) {
    102                 return;
    103             }
    104             onTimeout();
    105         }
    106     };
    107 
    108     @Override
    109     protected void onCreate(Bundle savedInstanceState) {
    110         super.onCreate(savedInstanceState);
    111         Intent i = getIntent();
    112         String action = i.getAction();
    113         if (action.equals(BluetoothPbapService.AUTH_CHALL_ACTION)) {
    114             showPbapDialog(DIALOG_YES_NO_AUTH);
    115             mCurrentDialog = DIALOG_YES_NO_AUTH;
    116         } else {
    117             Log.e(TAG, "Error: this activity may be started only with intent "
    118                     + "PBAP_ACCESS_REQUEST or PBAP_AUTH_CHALL ");
    119             finish();
    120         }
    121         registerReceiver(mReceiver, new IntentFilter(
    122                 BluetoothPbapService.USER_CONFIRM_TIMEOUT_ACTION));
    123     }
    124 
    125     private void showPbapDialog(int id) {
    126         final AlertController.AlertParams p = mAlertParams;
    127         switch (id) {
    128             case DIALOG_YES_NO_AUTH:
    129                 p.mTitle = getString(R.string.pbap_session_key_dialog_header);
    130                 p.mView = createView(DIALOG_YES_NO_AUTH);
    131                 p.mPositiveButtonText = getString(android.R.string.ok);
    132                 p.mPositiveButtonListener = this;
    133                 p.mNegativeButtonText = getString(android.R.string.cancel);
    134                 p.mNegativeButtonListener = this;
    135                 setupAlert();
    136                 mOkButton = mAlert.getButton(DialogInterface.BUTTON_POSITIVE);
    137                 mOkButton.setEnabled(false);
    138                 break;
    139             default:
    140                 break;
    141         }
    142     }
    143 
    144     private String createDisplayText(final int id) {
    145         String mRemoteName = BluetoothPbapService.getRemoteDeviceName();
    146         switch (id) {
    147             case DIALOG_YES_NO_AUTH:
    148                 String mMessage2 = getString(R.string.pbap_session_key_dialog_title, mRemoteName);
    149                 return mMessage2;
    150             default:
    151                 return null;
    152         }
    153     }
    154 
    155     private View createView(final int id) {
    156         switch (id) {
    157             case DIALOG_YES_NO_AUTH:
    158                 mView = getLayoutInflater().inflate(R.layout.auth, null);
    159                 messageView = (TextView)mView.findViewById(R.id.message);
    160                 messageView.setText(createDisplayText(id));
    161                 mKeyView = (EditText)mView.findViewById(R.id.text);
    162                 mKeyView.addTextChangedListener(this);
    163                 mKeyView.setFilters(new InputFilter[] {
    164                     new LengthFilter(BLUETOOTH_OBEX_AUTHKEY_MAX_LENGTH)
    165                 });
    166                 return mView;
    167             default:
    168                 return null;
    169         }
    170     }
    171 
    172     private void onPositive() {
    173         if (!mTimeout) {
    174             if (mCurrentDialog == DIALOG_YES_NO_AUTH) {
    175                 sendIntentToReceiver(BluetoothPbapService.AUTH_RESPONSE_ACTION,
    176                         BluetoothPbapService.EXTRA_SESSION_KEY, mSessionKey);
    177                 mKeyView.removeTextChangedListener(this);
    178             }
    179         }
    180         mTimeout = false;
    181         finish();
    182     }
    183 
    184     private void onNegative() {
    185         if (mCurrentDialog == DIALOG_YES_NO_AUTH) {
    186             sendIntentToReceiver(BluetoothPbapService.AUTH_CANCELLED_ACTION, null, null);
    187             mKeyView.removeTextChangedListener(this);
    188         }
    189         finish();
    190     }
    191 
    192     private void sendIntentToReceiver(final String intentName, final String extraName,
    193             final String extraValue) {
    194         Intent intent = new Intent(intentName);
    195         intent.setPackage(BluetoothPbapService.THIS_PACKAGE_NAME);
    196         if (extraName != null) {
    197             intent.putExtra(extraName, extraValue);
    198         }
    199         sendBroadcast(intent);
    200     }
    201 
    202     private void sendIntentToReceiver(final String intentName, final String extraName,
    203             final boolean extraValue) {
    204         Intent intent = new Intent(intentName);
    205         intent.setPackage(BluetoothPbapService.THIS_PACKAGE_NAME);
    206         if (extraName != null) {
    207             intent.putExtra(extraName, extraValue);
    208         }
    209         sendBroadcast(intent);
    210     }
    211 
    212     public void onClick(DialogInterface dialog, int which) {
    213         switch (which) {
    214             case DialogInterface.BUTTON_POSITIVE:
    215                 if (mCurrentDialog == DIALOG_YES_NO_AUTH) {
    216                     mSessionKey = mKeyView.getText().toString();
    217                 }
    218                 onPositive();
    219                 break;
    220 
    221             case DialogInterface.BUTTON_NEGATIVE:
    222                 onNegative();
    223                 break;
    224             default:
    225                 break;
    226         }
    227     }
    228 
    229     private void onTimeout() {
    230         mTimeout = true;
    231         if (mCurrentDialog == DIALOG_YES_NO_AUTH) {
    232             messageView.setText(getString(R.string.pbap_authentication_timeout_message,
    233                     BluetoothPbapService.getRemoteDeviceName()));
    234             mKeyView.setVisibility(View.GONE);
    235             mKeyView.clearFocus();
    236             mKeyView.removeTextChangedListener(this);
    237             mOkButton.setEnabled(true);
    238             mAlert.getButton(DialogInterface.BUTTON_NEGATIVE).setVisibility(View.GONE);
    239         }
    240 
    241         mTimeoutHandler.sendMessageDelayed(mTimeoutHandler.obtainMessage(DISMISS_TIMEOUT_DIALOG),
    242                 DISMISS_TIMEOUT_DIALOG_VALUE);
    243     }
    244 
    245     @Override
    246     protected void onRestoreInstanceState(Bundle savedInstanceState) {
    247         super.onRestoreInstanceState(savedInstanceState);
    248         mTimeout = savedInstanceState.getBoolean(KEY_USER_TIMEOUT);
    249         if (V) Log.v(TAG, "onRestoreInstanceState() mTimeout: " + mTimeout);
    250         if (mTimeout) {
    251             onTimeout();
    252         }
    253     }
    254 
    255     @Override
    256     protected void onSaveInstanceState(Bundle outState) {
    257         super.onSaveInstanceState(outState);
    258         outState.putBoolean(KEY_USER_TIMEOUT, mTimeout);
    259     }
    260 
    261     @Override
    262     protected void onDestroy() {
    263         super.onDestroy();
    264         unregisterReceiver(mReceiver);
    265     }
    266 
    267     public boolean onPreferenceChange(Preference preference, Object newValue) {
    268         return true;
    269     }
    270 
    271     public void beforeTextChanged(CharSequence s, int start, int before, int after) {
    272     }
    273 
    274     public void onTextChanged(CharSequence s, int start, int before, int count) {
    275     }
    276 
    277     public void afterTextChanged(android.text.Editable s) {
    278         if (s.length() > 0) {
    279             mOkButton.setEnabled(true);
    280         }
    281     }
    282 
    283     private final Handler mTimeoutHandler = new Handler() {
    284         @Override
    285         public void handleMessage(Message msg) {
    286             switch (msg.what) {
    287                 case DISMISS_TIMEOUT_DIALOG:
    288                     if (V) Log.v(TAG, "Received DISMISS_TIMEOUT_DIALOG msg.");
    289                     finish();
    290                     break;
    291                 default:
    292                     break;
    293             }
    294         }
    295     };
    296 }
    297