384 lines
15 KiB
Java
Executable File
384 lines
15 KiB
Java
Executable File
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.bluetooth;
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import android.bluetooth.BluetoothDevice;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.os.Bundle;
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import android.text.Editable;
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import android.text.Html;
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import android.text.InputFilter;
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import android.text.InputType;
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import android.text.Spanned;
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import android.text.TextWatcher;
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import android.text.InputFilter.LengthFilter;
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import android.util.Log;
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import android.view.View;
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import android.widget.Button;
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import android.widget.CheckBox;
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import android.widget.CompoundButton;
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import android.widget.EditText;
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import android.widget.TextView;
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import com.android.internal.app.AlertActivity;
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import com.android.internal.app.AlertController;
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import com.android.settings.R;
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import android.view.KeyEvent;
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import java.util.Locale;
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/**
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* BluetoothPairingDialog asks the user to enter a PIN / Passkey / simple confirmation
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* for pairing with a remote Bluetooth device. It is an activity that appears as a dialog.
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*/
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public final class BluetoothPairingDialog extends AlertActivity implements
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CompoundButton.OnCheckedChangeListener, DialogInterface.OnClickListener, TextWatcher {
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private static final String TAG = "BluetoothPairingDialog";
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private static final int BLUETOOTH_PIN_MAX_LENGTH = 16;
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private static final int BLUETOOTH_PASSKEY_MAX_LENGTH = 6;
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private BluetoothDevice mDevice;
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private int mType;
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private String mPairingKey;
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private EditText mPairingView;
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private Button mOkButton;
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/**
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* Dismiss the dialog if the bond state changes to bonded or none,
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* or if pairing was canceled for {@link #mDevice}.
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*/
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private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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String action = intent.getAction();
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if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {
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int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,
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BluetoothDevice.ERROR);
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if (bondState == BluetoothDevice.BOND_BONDED ||
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bondState == BluetoothDevice.BOND_NONE) {
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dismiss();
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}
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} else if (BluetoothDevice.ACTION_PAIRING_CANCEL.equals(action)) {
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BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
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if (device == null || device.equals(mDevice)) {
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dismiss();
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}
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}
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}
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};
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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Intent intent = getIntent();
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if (!intent.getAction().equals(BluetoothDevice.ACTION_PAIRING_REQUEST))
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{
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Log.e(TAG, "Error: this activity may be started only with intent " +
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BluetoothDevice.ACTION_PAIRING_REQUEST);
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finish();
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return;
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}
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LocalBluetoothManager manager = LocalBluetoothManager.getInstance(this);
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if (manager == null) {
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Log.e(TAG, "Error: BluetoothAdapter not supported by system");
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finish();
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return;
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}
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CachedBluetoothDeviceManager deviceManager = manager.getCachedDeviceManager();
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mDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
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mType = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, BluetoothDevice.ERROR);
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switch (mType) {
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case BluetoothDevice.PAIRING_VARIANT_PIN:
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case BluetoothDevice.PAIRING_VARIANT_PASSKEY:
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createUserEntryDialog(deviceManager);
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break;
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case BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION:
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int passkey =
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intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_KEY, BluetoothDevice.ERROR);
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if (passkey == BluetoothDevice.ERROR) {
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Log.e(TAG, "Invalid Confirmation Passkey received, not showing any dialog");
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return;
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}
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mPairingKey = String.format(Locale.US, "%06d", passkey);
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createConfirmationDialog(deviceManager);
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break;
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case BluetoothDevice.PAIRING_VARIANT_CONSENT:
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case BluetoothDevice.PAIRING_VARIANT_OOB_CONSENT:
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createConsentDialog(deviceManager);
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break;
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case BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY:
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case BluetoothDevice.PAIRING_VARIANT_DISPLAY_PIN:
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int pairingKey =
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intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_KEY, BluetoothDevice.ERROR);
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if (pairingKey == BluetoothDevice.ERROR) {
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Log.e(TAG, "Invalid Confirmation Passkey or PIN received, not showing any dialog");
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return;
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}
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if (mType == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY) {
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mPairingKey = String.format("%06d", pairingKey);
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} else {
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mPairingKey = String.format("%04d", pairingKey);
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}
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createDisplayPasskeyOrPinDialog(deviceManager);
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break;
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default:
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Log.e(TAG, "Incorrect pairing type received, not showing any dialog");
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}
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/*
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* Leave this registered through pause/resume since we still want to
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* finish the activity in the background if pairing is canceled.
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*/
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registerReceiver(mReceiver, new IntentFilter(BluetoothDevice.ACTION_PAIRING_CANCEL));
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registerReceiver(mReceiver, new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED));
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}
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private void createUserEntryDialog(CachedBluetoothDeviceManager deviceManager) {
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final AlertController.AlertParams p = mAlertParams;
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p.mTitle = getString(R.string.bluetooth_pairing_request);
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p.mView = createPinEntryView(deviceManager.getName(mDevice));
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p.mPositiveButtonText = getString(android.R.string.ok);
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p.mPositiveButtonListener = this;
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p.mNegativeButtonText = getString(android.R.string.cancel);
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p.mNegativeButtonListener = this;
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setupAlert();
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mOkButton = mAlert.getButton(BUTTON_POSITIVE);
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mOkButton.setEnabled(false);
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}
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private View createPinEntryView(String deviceName) {
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View view = getLayoutInflater().inflate(R.layout.bluetooth_pin_entry, null);
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TextView messageView = (TextView) view.findViewById(R.id.message);
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TextView messageView2 = (TextView) view.findViewById(R.id.message_below_pin);
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CheckBox alphanumericPin = (CheckBox) view.findViewById(R.id.alphanumeric_pin);
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mPairingView = (EditText) view.findViewById(R.id.text);
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mPairingView.addTextChangedListener(this);
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alphanumericPin.setOnCheckedChangeListener(this);
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int messageId1;
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int messageId2;
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int maxLength;
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switch (mType) {
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case BluetoothDevice.PAIRING_VARIANT_PIN:
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messageId1 = R.string.bluetooth_enter_pin_msg;
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messageId2 = R.string.bluetooth_enter_pin_other_device;
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// Maximum of 16 characters in a PIN
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maxLength = BLUETOOTH_PIN_MAX_LENGTH;
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break;
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case BluetoothDevice.PAIRING_VARIANT_PASSKEY:
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messageId1 = R.string.bluetooth_enter_passkey_msg;
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messageId2 = R.string.bluetooth_enter_passkey_other_device;
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// Maximum of 6 digits for passkey
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maxLength = BLUETOOTH_PASSKEY_MAX_LENGTH;
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alphanumericPin.setVisibility(View.GONE);
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break;
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default:
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Log.e(TAG, "Incorrect pairing type for createPinEntryView: " + mType);
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return null;
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}
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// HTML escape deviceName, Format the message string, then parse HTML style tags
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String messageText = getString(messageId1, Html.escapeHtml(deviceName));
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messageView.setText(Html.fromHtml(messageText));
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messageView2.setText(messageId2);
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mPairingView.setInputType(InputType.TYPE_CLASS_NUMBER);
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mPairingView.setFilters(new InputFilter[] {
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new LengthFilter(maxLength) });
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return view;
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}
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private View createView(CachedBluetoothDeviceManager deviceManager) {
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View view = getLayoutInflater().inflate(R.layout.bluetooth_pin_confirm, null);
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// Escape device name to avoid HTML injection.
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String name = Html.escapeHtml(deviceManager.getName(mDevice));
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TextView messageView = (TextView) view.findViewById(R.id.message);
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String messageText; // formatted string containing HTML style tags
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switch (mType) {
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case BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION:
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messageText = getString(R.string.bluetooth_confirm_passkey_msg,
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name, mPairingKey);
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break;
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case BluetoothDevice.PAIRING_VARIANT_CONSENT:
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case BluetoothDevice.PAIRING_VARIANT_OOB_CONSENT:
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messageText = getString(R.string.bluetooth_incoming_pairing_msg, name);
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break;
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case BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY:
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case BluetoothDevice.PAIRING_VARIANT_DISPLAY_PIN:
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messageText = getString(R.string.bluetooth_display_passkey_pin_msg, name,
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mPairingKey);
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break;
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default:
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Log.e(TAG, "Incorrect pairing type received, not creating view");
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return null;
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}
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messageView.setText(Html.fromHtml(messageText));
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return view;
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}
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private void createConfirmationDialog(CachedBluetoothDeviceManager deviceManager) {
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final AlertController.AlertParams p = mAlertParams;
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p.mTitle = getString(R.string.bluetooth_pairing_request);
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p.mView = createView(deviceManager);
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p.mPositiveButtonText = getString(R.string.bluetooth_pairing_accept);
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p.mPositiveButtonListener = this;
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p.mNegativeButtonText = getString(R.string.bluetooth_pairing_decline);
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p.mNegativeButtonListener = this;
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setupAlert();
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}
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private void createConsentDialog(CachedBluetoothDeviceManager deviceManager) {
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final AlertController.AlertParams p = mAlertParams;
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p.mTitle = getString(R.string.bluetooth_pairing_request);
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p.mView = createView(deviceManager);
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p.mPositiveButtonText = getString(R.string.bluetooth_pairing_accept);
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p.mPositiveButtonListener = this;
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p.mNegativeButtonText = getString(R.string.bluetooth_pairing_decline);
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p.mNegativeButtonListener = this;
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setupAlert();
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}
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private void createDisplayPasskeyOrPinDialog(
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CachedBluetoothDeviceManager deviceManager) {
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final AlertController.AlertParams p = mAlertParams;
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p.mTitle = getString(R.string.bluetooth_pairing_request);
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p.mView = createView(deviceManager);
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p.mNegativeButtonText = getString(android.R.string.cancel);
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p.mNegativeButtonListener = this;
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setupAlert();
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// Since its only a notification, send an OK to the framework,
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// indicating that the dialog has been displayed.
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if (mType == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY) {
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mDevice.setPairingConfirmation(true);
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} else if (mType == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PIN) {
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byte[] pinBytes = BluetoothDevice.convertPinToBytes(mPairingKey);
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mDevice.setPin(pinBytes);
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}
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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unregisterReceiver(mReceiver);
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}
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public void afterTextChanged(Editable s) {
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if (mOkButton != null) {
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mOkButton.setEnabled(s.length() > 0);
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}
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}
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private void onPair(String value) {
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switch (mType) {
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case BluetoothDevice.PAIRING_VARIANT_PIN:
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byte[] pinBytes = BluetoothDevice.convertPinToBytes(value);
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if (pinBytes == null) {
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return;
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}
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mDevice.setPin(pinBytes);
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break;
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case BluetoothDevice.PAIRING_VARIANT_PASSKEY:
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int passkey = Integer.parseInt(value);
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mDevice.setPasskey(passkey);
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break;
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case BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION:
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case BluetoothDevice.PAIRING_VARIANT_CONSENT:
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mDevice.setPairingConfirmation(true);
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break;
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case BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY:
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case BluetoothDevice.PAIRING_VARIANT_DISPLAY_PIN:
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// Do nothing.
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break;
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case BluetoothDevice.PAIRING_VARIANT_OOB_CONSENT:
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mDevice.setRemoteOutOfBandData();
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break;
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default:
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Log.e(TAG, "Incorrect pairing type received");
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}
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}
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private void onCancel() {
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mDevice.cancelPairingUserInput();
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}
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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if (keyCode == KeyEvent.KEYCODE_BACK) {
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onCancel();
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}
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return super.onKeyDown(keyCode,event);
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}
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public void onClick(DialogInterface dialog, int which) {
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switch (which) {
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case BUTTON_POSITIVE:
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if (mPairingView != null) {
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onPair(mPairingView.getText().toString());
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} else {
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onPair(null);
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}
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break;
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case BUTTON_NEGATIVE:
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default:
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onCancel();
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break;
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}
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}
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/* Not used */
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public void beforeTextChanged(CharSequence s, int start, int count, int after) {
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}
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/* Not used */
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public void onTextChanged(CharSequence s, int start, int before, int count) {
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}
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public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
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// change input type for soft keyboard to numeric or alphanumeric
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if (isChecked) {
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mPairingView.setInputType(InputType.TYPE_CLASS_TEXT);
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} else {
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mPairingView.setInputType(InputType.TYPE_CLASS_NUMBER);
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}
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}
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}
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