| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.settings.security; |
| |
| import android.bluetooth.BluetoothDevice; |
| import android.car.Car; |
| import android.car.trust.CarTrustAgentEnrollmentManager; |
| import android.car.userlib.CarUserManagerHelper; |
| import android.os.Bundle; |
| import android.widget.Toast; |
| |
| import androidx.annotation.Nullable; |
| import androidx.annotation.VisibleForTesting; |
| import androidx.fragment.app.Fragment; |
| |
| import com.android.car.settings.R; |
| import com.android.car.settings.common.CarSettingActivity; |
| import com.android.car.settings.common.Logger; |
| |
| /** |
| * Activity which manages the enrollment process and communicates between |
| * CarTrustAgentEnrollmentService and fragments. |
| * |
| * <p>The flow when user want to enroll a trusted device should be as follows: |
| * <ol> |
| * <li> {@link CarTrustAgentEnrollmentManager#setEnrollmentCallback( |
| *CarTrustAgentEnrollmentManager.CarTrustAgentEnrollmentCallback)} |
| * <li> {@link CarTrustAgentEnrollmentManager#setBleCallback( |
| *CarTrustAgentEnrollmentManager.CarTrustAgentBleCallback)} |
| * <li> {@link CarTrustAgentEnrollmentManager#startEnrollmentAdvertising()} |
| * <li> wait for {@link CarTrustAgentEnrollmentManager.CarTrustAgentBleCallback# |
| * onBleEnrollmentDeviceDisconnected(BluetoothDevice)} |
| * <li> if connected, call {@link CarTrustAgentEnrollmentManager#initiateEnrollmentHandshake( |
| *BluetoothDevice)} |
| * <li> {@link CarTrustAgentEnrollmentManager#stopEnrollmentAdvertising()} |
| * <li> wait for |
| * {@link CarTrustAgentEnrollmentManager.CarTrustAgentEnrollmentCallback#onAuthStringAvailable( |
| *BluetoothDevice, String)} to show the pairing code dialog to user |
| * <li> {@link CarTrustAgentEnrollmentManager#enrollmentHandshakeAccepted(BluetoothDevice)} after |
| * user confirms the pairing code |
| * <li> wait for |
| * {@link CarTrustAgentEnrollmentManager.CarTrustAgentEnrollmentCallback#onEscrowTokenAdded(long)} |
| * <li> {@link #getCheckLockFragment()}, wait user to input the password |
| * <li> After user enter the correct password, wait for |
| * {@link CarTrustAgentEnrollmentManager.CarTrustAgentEnrollmentCallback# |
| * onEscrowTokenActiveStateChanged(long, boolean)} |
| * <li> After get the results, finish the activity |
| * </ol> |
| */ |
| public class AddTrustedDeviceActivity extends CarSettingActivity implements CheckLockListener { |
| private static final Logger LOG = new Logger(AddTrustedDeviceActivity.class); |
| private static final String BLUETOOTH_DEVICE_KEY = "bluetoothDevice"; |
| private static final String CURRENT_HANDLE_KEY = "currentHandle"; |
| private Car mCar; |
| private BluetoothDevice mBluetoothDevice; |
| private long mHandle; |
| private CarUserManagerHelper mCarUserManagerHelper; |
| @Nullable |
| private CarTrustAgentEnrollmentManager mCarTrustAgentEnrollmentManager; |
| |
| private final CarTrustAgentEnrollmentManager.CarTrustAgentEnrollmentCallback |
| mCarTrustAgentEnrollmentCallback = |
| new CarTrustAgentEnrollmentManager.CarTrustAgentEnrollmentCallback() { |
| |
| @Override |
| public void onEnrollmentHandshakeFailure(BluetoothDevice device, int errorCode) { |
| LOG.e("Trust agent service time out"); |
| } |
| |
| @Override |
| public void onAuthStringAvailable(BluetoothDevice device, String authString) { |
| ConfirmPairingCodeDialog dialog = ConfirmPairingCodeDialog.newInstance( |
| device.getAddress(), authString); |
| dialog.setConfirmPairingCodeListener(mConfirmParingCodeListener); |
| showDialog(dialog, ConfirmPairingCodeDialog.TAG); |
| } |
| |
| @Override |
| public void onEscrowTokenAdded(long handle) { |
| // User need to enter the correct authentication of the car to activate the |
| // added token. |
| mHandle = handle; |
| launchFragment(getCheckLockFragment()); |
| } |
| |
| @Override |
| public void onEscrowTokenRemoved(long handle) { |
| } |
| |
| @Override |
| public void onEscrowTokenActiveStateChanged(long handle, boolean active) { |
| if (active) { |
| onDeviceAddedSuccessfully(handle); |
| } else { |
| LOG.d(handle + " has not been activated"); |
| } |
| finish(); |
| } |
| }; |
| |
| private final CarTrustAgentEnrollmentManager.CarTrustAgentBleCallback |
| mCarTrustAgentBleCallback = |
| new CarTrustAgentEnrollmentManager.CarTrustAgentBleCallback() { |
| @Override |
| public void onBleEnrollmentDeviceConnected(BluetoothDevice device) { |
| mBluetoothDevice = device; |
| mCarTrustAgentEnrollmentManager.stopEnrollmentAdvertising(); |
| } |
| |
| @Override |
| public void onBleEnrollmentDeviceDisconnected(BluetoothDevice device) { |
| Toast.makeText(AddTrustedDeviceActivity.this, getResources().getString( |
| R.string.trusted_device_disconnected_toast), |
| Toast.LENGTH_SHORT).show(); |
| mBluetoothDevice = null; |
| finish(); |
| } |
| |
| @Override |
| public void onEnrollmentAdvertisingStarted() { |
| } |
| |
| @Override |
| public void onEnrollmentAdvertisingFailed() { |
| finish(); |
| } |
| }; |
| |
| @VisibleForTesting |
| final ConfirmPairingCodeDialog.ConfirmPairingCodeListener mConfirmParingCodeListener = |
| new ConfirmPairingCodeDialog.ConfirmPairingCodeListener() { |
| public void onConfirmPairingCode() { |
| mCarTrustAgentEnrollmentManager.enrollmentHandshakeAccepted(mBluetoothDevice); |
| } |
| |
| public void onDialogCancelled() { |
| finish(); |
| } |
| }; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mCar = Car.createCar(this); |
| mCarTrustAgentEnrollmentManager = (CarTrustAgentEnrollmentManager) mCar.getCarManager( |
| Car.CAR_TRUST_AGENT_ENROLLMENT_SERVICE); |
| if (mCarTrustAgentEnrollmentManager == null) { |
| LOG.e("CarTrustAgentEnrollmentManager is null"); |
| finish(); |
| } |
| mCarUserManagerHelper = new CarUserManagerHelper(this); |
| if (savedInstanceState != null) { |
| mBluetoothDevice = savedInstanceState.getParcelable(BLUETOOTH_DEVICE_KEY); |
| mHandle = savedInstanceState.getLong(CURRENT_HANDLE_KEY); |
| } |
| ConfirmPairingCodeDialog dialog = |
| (ConfirmPairingCodeDialog) findDialogByTag(ConfirmPairingCodeDialog.TAG); |
| if (dialog != null) { |
| dialog.setConfirmPairingCodeListener(mConfirmParingCodeListener); |
| } |
| } |
| |
| |
| @Override |
| protected void onStart() { |
| super.onStart(); |
| if (mHandle != 0) { |
| if (mCarTrustAgentEnrollmentManager.isEscrowTokenActive(mHandle, |
| mCarUserManagerHelper.getCurrentProcessUserId())) { |
| onDeviceAddedSuccessfully(mHandle); |
| finish(); |
| } |
| } |
| if (mBluetoothDevice == null) { |
| mCarTrustAgentEnrollmentManager.startEnrollmentAdvertising(); |
| } |
| mCarTrustAgentEnrollmentManager.setEnrollmentCallback(mCarTrustAgentEnrollmentCallback); |
| mCarTrustAgentEnrollmentManager.setBleCallback(mCarTrustAgentBleCallback); |
| |
| } |
| |
| @Override |
| protected void onStop() { |
| super.onStop(); |
| mCarTrustAgentEnrollmentManager.setBleCallback(null); |
| mCarTrustAgentEnrollmentManager.setEnrollmentCallback(null); |
| mCarTrustAgentEnrollmentManager.stopEnrollmentAdvertising(); |
| } |
| |
| @Override |
| public void onSaveInstanceState(Bundle savedInstanceState) { |
| savedInstanceState.putParcelable(BLUETOOTH_DEVICE_KEY, mBluetoothDevice); |
| savedInstanceState.putLong(CURRENT_HANDLE_KEY, mHandle); |
| super.onSaveInstanceState(savedInstanceState); |
| } |
| |
| |
| @Override |
| @Nullable |
| protected Fragment getFragment() { |
| Fragment currentFragment = getSupportFragmentManager().findFragmentById( |
| R.id.fragment_container); |
| return currentFragment == null ? new AddTrustedDeviceProgressFragment() : currentFragment; |
| } |
| |
| private Fragment getCheckLockFragment() { |
| return ConfirmPasswordFragmentFactory.getFragment(/* context= */ this); |
| } |
| |
| @Override |
| public void onLockVerified(byte[] lock) { |
| getSupportFragmentManager().popBackStack(); |
| } |
| |
| @Override |
| public void onBackPressed() { |
| finish(); |
| } |
| |
| private void onDeviceAddedSuccessfully(long handle) { |
| Toast.makeText(this, |
| getResources().getString(R.string.trusted_device_success_enrollment_toast), |
| Toast.LENGTH_LONG).show(); |
| } |
| } |