/*
* Copyright (C) 2014 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.trustagent.test;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.PersistableBundle;
import android.preference.PreferenceManager;
import android.service.trust.TrustAgentService;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import android.widget.Toast;
import java.util.List;
public class SampleTrustAgent extends TrustAgentService
implements SharedPreferences.OnSharedPreferenceChangeListener {
/**
* If true, allows anyone to control this trust agent, e.g. using adb:
* <pre>
* $ adb shell am broadcast -a action.sample_trust_agent.grant_trust\
* -e extra.message SampleTrust\
* --el extra.duration 1000 --ez extra.init_by_user false --ez extra.dismiss_keyguard false
* </pre>
*/
private static final boolean ALLOW_EXTERNAL_BROADCASTS = false;
LocalBroadcastManager mLocalBroadcastManager;
private static final String ACTION_GRANT_TRUST = "action.sample_trust_agent.grant_trust";
private static final String ACTION_REVOKE_TRUST = "action.sample_trust_agent.revoke_trust";
private static final String EXTRA_MESSAGE = "extra.message";
private static final String EXTRA_DURATION = "extra.duration";
private static final String EXTRA_INITIATED_BY_USER = "extra.init_by_user";
private static final String EXTRA_DISMISS_KEYGUARD = "extra.dismiss_keyguard";
private static final String PREFERENCE_REPORT_UNLOCK_ATTEMPTS
= "preference.report_unlock_attempts";
private static final String PREFERENCE_MANAGING_TRUST
= "preference.managing_trust";
private static final String PREFERENCE_REPORT_DEVICE_LOCKED = "preference.report_device_locked";
private static final String TAG = "SampleTrustAgent";
@Override
public void onCreate() {
super.onCreate();
mLocalBroadcastManager = LocalBroadcastManager.getInstance(this);
IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_GRANT_TRUST);
filter.addAction(ACTION_REVOKE_TRUST);
mLocalBroadcastManager.registerReceiver(mReceiver, filter);
if (ALLOW_EXTERNAL_BROADCASTS) {
registerReceiver(mReceiver, filter);
}
setManagingTrust(getIsManagingTrust(this));
PreferenceManager.getDefaultSharedPreferences(this)
.registerOnSharedPreferenceChangeListener(this);
}
@Override
public void onTrustTimeout() {
super.onTrustTimeout();
logAndShowToast("onTrustTimeout(): timeout expired");
}
@Override
public void onDeviceLocked() {
super.onDeviceLocked();
if (getReportDeviceLocked(this)) {
logAndShowToast("onDeviceLocked(): device is now locked");
}
}
@Override
public void onDeviceUnlocked() {
super.onDeviceUnlocked();
if (getReportDeviceLocked(this)) {
logAndShowToast("onDeviceUnlocked(): device is now unlocked");
}
}
@Override
public void onUnlockAttempt(boolean successful) {
if (getReportUnlockAttempts(this)) {
logAndShowToast("onUnlockAttempt(successful=" + successful + ")");
}
}
private void logAndShowToast(String text) {
Log.i(TAG, text);
Toast.makeText(this, text, Toast.LENGTH_SHORT).show();
}
@Override
public boolean onConfigure(List<PersistableBundle> options) {
if (options != null) {
for (int i = 0; i < options.size(); i++) {
Log.v(TAG, "Policy options received: " + options.get(i));
}
} else {
Log.w(TAG, "onConfigure() called with no options");
}
// TODO: Handle options
return true; // inform DPM that we support it
}
@Override
public void onDestroy() {
super.onDestroy();
mLocalBroadcastManager.unregisterReceiver(mReceiver);
if (ALLOW_EXTERNAL_BROADCASTS) {
unregisterReceiver(mReceiver);
}
PreferenceManager.getDefaultSharedPreferences(this)
.unregisterOnSharedPreferenceChangeListener(this);
}
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (ACTION_GRANT_TRUST.equals(action)) {
int flags = 0;
if (intent.getBooleanExtra(EXTRA_INITIATED_BY_USER, false)) {
flags |= TrustAgentService.FLAG_GRANT_TRUST_INITIATED_BY_USER;
}
if (intent.getBooleanExtra(EXTRA_DISMISS_KEYGUARD, false)) {
flags |= TrustAgentService.FLAG_GRANT_TRUST_DISMISS_KEYGUARD;
}
try {
grantTrust(intent.getStringExtra(EXTRA_MESSAGE),
intent.getLongExtra(EXTRA_DURATION, 0), flags);
} catch (IllegalStateException e) {
logAndShowToast("IllegalStateException: " + e.getMessage());
}
} else if (ACTION_REVOKE_TRUST.equals(action)) {
revokeTrust();
}
}
};
public static void sendGrantTrust(Context context,
String message, long durationMs, boolean initiatedByUser) {
Intent intent = new Intent(ACTION_GRANT_TRUST);
intent.putExtra(EXTRA_MESSAGE, message);
intent.putExtra(EXTRA_DURATION, durationMs);
intent.putExtra(EXTRA_INITIATED_BY_USER, initiatedByUser);
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
}
public static void sendRevokeTrust(Context context) {
Intent intent = new Intent(ACTION_REVOKE_TRUST);
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
}
public static void setReportUnlockAttempts(Context context, boolean enabled) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(context);
sharedPreferences.edit().putBoolean(PREFERENCE_REPORT_UNLOCK_ATTEMPTS, enabled).apply();
}
public static boolean getReportUnlockAttempts(Context context) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(context);
return sharedPreferences.getBoolean(PREFERENCE_REPORT_UNLOCK_ATTEMPTS, false);
}
public static void setReportDeviceLocked(Context context, boolean enabled) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(context);
sharedPreferences.edit().putBoolean(PREFERENCE_REPORT_DEVICE_LOCKED, enabled).apply();
}
public static boolean getReportDeviceLocked(Context context) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(context);
return sharedPreferences.getBoolean(PREFERENCE_REPORT_DEVICE_LOCKED, false);
}
public static void setIsManagingTrust(Context context, boolean enabled) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(context);
sharedPreferences.edit().putBoolean(PREFERENCE_MANAGING_TRUST, enabled).apply();
}
public static boolean getIsManagingTrust(Context context) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(context);
return sharedPreferences.getBoolean(PREFERENCE_MANAGING_TRUST, false);
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (PREFERENCE_MANAGING_TRUST.equals(key)) {
setManagingTrust(getIsManagingTrust(this));
}
}
}