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Remove deprecated <2.2 caching functionality that breaks modern devices.

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This commit is contained in:
Moxie Marlinspike 2012-07-16 19:49:37 -07:00
parent 607d14c6d7
commit a627a77077
1 changed files with 39 additions and 105 deletions
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144
src/org/thoughtcrime/securesms/service/KeyCachingService.java
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@ -1,6 +1,6 @@
/**
/**
* Copyright (C) 2011 Whisper Systems
*
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
@ -10,23 +10,14 @@
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms.service;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.thoughtcrime.securesms.ApplicationPreferencesActivity;
import org.thoughtcrime.securesms.R;
import org.thoughtcrime.securesms.SecureSMS;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import android.app.AlarmManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
@ -37,9 +28,14 @@ import android.os.SystemClock;
import android.preference.PreferenceManager;
import android.util.Log;
import org.thoughtcrime.securesms.ApplicationPreferencesActivity;
import org.thoughtcrime.securesms.R;
import org.thoughtcrime.securesms.SecureSMS;
import org.thoughtcrime.securesms.crypto.MasterSecret;
/**
* Small service that stays running to keep a key cached in memory.
*
*
* @author Moxie Marlinspike
*/
@ -47,7 +43,7 @@ public class KeyCachingService extends Service {
public static final int NOTIFICATION_ID = 1337;
public static final int SERVICE_RUNNING_ID = 4141;
public static final String KEY_PERMISSION = "org.thoughtcrime.securesms.ACCESS_SECRETS";
public static final String NEW_KEY_EVENT = "org.thoughtcrime.securesms.service.action.NEW_KEY_EVENT";
public static final String PASSPHRASE_EXPIRED_EVENT = "org.thoughtcrime.securesms.service.action.PASSPHRASE_EXPIRED_EVENT";
@ -56,35 +52,27 @@ public class KeyCachingService extends Service {
public static final String ACTIVITY_STOP_EVENT = "org.thoughtcrime.securesms.service.action.ACTIVITY_STOP_EVENT";
public static final String PREFERENCES_NAME = "SecureSMS-Preferences";
private static final Class[] mStartForegroundSignature = new Class[] {int.class, Notification.class};
private static final Class[] mStopForegroundSignature = new Class[] {boolean.class};
private PendingIntent pending;
private NotificationManager notificationManager;
private Method mStartForeground;
private Method mStopForeground;
private Object[] mStartForegroundArgs = new Object[2];
private Object[] mStopForegroundArgs = new Object[1];
private int activitiesRunning = 0;
private final IBinder binder = new KeyCachingBinder();
private int activitiesRunning = 0;
private final IBinder binder = new KeyCachingBinder();
private MasterSecret masterSecret;
public KeyCachingService() {}
public synchronized MasterSecret getMasterSecret() {
return masterSecret;
}
public synchronized void setMasterSecret(MasterSecret masterSecret) {
this.masterSecret = masterSecret;
foregroundService();
broadcastNewSecret();
startTimeoutIfAppropriate();
}
@Override
public void onStart(Intent intent, int startId) {
if (intent.getAction() != null && intent.getAction().equals(CLEAR_KEY_ACTION))
@ -96,31 +84,22 @@ public class KeyCachingService extends Service {
else if (intent.getAction() != null && intent.getAction().equals(PASSPHRASE_EXPIRED_EVENT))
handlePassphraseExpired();
}
@Override
public void onCreate() {
pending = PendingIntent.getService(this, 0, new Intent(PASSPHRASE_EXPIRED_EVENT, null, this, KeyCachingService.class), 0);
notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
try {
mStartForeground = getClass().getMethod("startForeground", mStartForegroundSignature);
mStopForeground = getClass().getMethod("stopForeground", mStopForegroundSignature);
} catch (NoSuchMethodException e) {
// Running on an older platform.
mStartForeground = mStopForeground = null;
}
pending = PendingIntent.getService(this, 0, new Intent(PASSPHRASE_EXPIRED_EVENT, null, this, KeyCachingService.class), 0);
}
@Override
public void onDestroy() {
Log.e("kcs", "KCS Is Being Destroyed!");
}
private void handleActivityStarted() {
Log.w("KeyCachingService", "Incrementing activity count...");
AlarmManager alarmManager = (AlarmManager)this.getSystemService(ALARM_SERVICE);
alarmManager.cancel(pending);
alarmManager.cancel(pending);
activitiesRunning++;
}
@ -130,46 +109,46 @@ public class KeyCachingService extends Service {
activitiesRunning--;
startTimeoutIfAppropriate();
}
private void handleClearKey() {
this.masterSecret = null;
stopForegroundCompat(SERVICE_RUNNING_ID);
stopForeground(true);
}
private void handlePassphraseExpired() {
handleClearKey();
Intent intent = new Intent(PASSPHRASE_EXPIRED_EVENT);
intent.setPackage(getApplicationContext().getPackageName());
sendBroadcast(intent, KEY_PERMISSION);
}
private void startTimeoutIfAppropriate() {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
boolean timeoutEnabled = sharedPreferences.getBoolean(ApplicationPreferencesActivity.PASSPHRASE_TIMEOUT_PREF, false);
if ((activitiesRunning == 0) && (this.masterSecret != null) && timeoutEnabled) {
long timeoutMinutes = sharedPreferences.getInt(ApplicationPreferencesActivity.PASSPHRASE_TIMEOUT_INTERVAL_PREF, 60 * 5);
long timeoutMillis = timeoutMinutes * 60 * 1000;
Log.w("KeyCachingService", "Starting timeout: " + timeoutMillis);
AlarmManager alarmManager = (AlarmManager)this.getSystemService(ALARM_SERVICE);
alarmManager.cancel(pending);
alarmManager.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + timeoutMillis, pending);
}
}
}
private void foregroundService() {
Notification notification = new Notification(R.drawable.icon, "TextSecure Passphrase Cached", System.currentTimeMillis());
Intent intent = new Intent(this, SecureSMS.class);
PendingIntent launchIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);
notification.setLatestEventInfo(getApplicationContext(), "TextSecure Cached", "TextSecure Passphrase Cached", launchIntent);
stopForegroundCompat(SERVICE_RUNNING_ID);
startForegroundCompat(SERVICE_RUNNING_ID, notification);
stopForeground(true);
startForeground(SERVICE_RUNNING_ID, notification);
}
private void broadcastNewSecret() {
Log.w("service", "Broadcasting new secret...");
Intent intent = new Intent(NEW_KEY_EVENT);
@ -178,61 +157,16 @@ public class KeyCachingService extends Service {
sendBroadcast(intent, KEY_PERMISSION);
}
@Override
public IBinder onBind(Intent arg0) {
return binder;
}
public class KeyCachingBinder extends Binder {
public KeyCachingService getService() {
return KeyCachingService.this;
}
}
/**
* This is a wrapper around the new startForeground method, using the older
* APIs if it is not available.
*/
private void startForegroundCompat(int id, Notification notification) {
if (mStartForeground != null) {
mStartForegroundArgs[0] = Integer.valueOf(id);
mStartForegroundArgs[1] = notification;
try {
mStartForeground.invoke(this, mStartForegroundArgs);
} catch (InvocationTargetException e) {
Log.w("KeyCachingService", "Unable to invoke startForeground", e);
} catch (IllegalAccessException e) {
Log.w("KeyCachingService", "Unable to invoke startForeground", e);
}
return;
}
setForeground(true);
notificationManager.notify(id, notification);
}
/**
* This is a wrapper around the new stopForeground method, using the older
* APIs if it is not available.
*/
private void stopForegroundCompat(int id) {
Log.w("KeyCachingService", "Calling stopForeground!");
if (mStopForeground != null) {
mStopForegroundArgs[0] = Boolean.TRUE;
try {
mStopForeground.invoke(this, mStopForegroundArgs);
} catch (InvocationTargetException e) {
Log.w("KeyCachingService", "Unable to invoke stopForeground", e);
} catch (IllegalAccessException e) {
Log.w("KeyCachingService", "Unable to invoke stopForeground", e);
}
return;
}
notificationManager.cancel(id);
setForeground(false);
}
}