reworked keyserversyncadapterservice flow

2015-08-10 06:17:29 +05:30
parent 448657602c
commit 65a993446c
8 changed files with 386 additions and 164 deletions
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/KeychainApplication.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/KeychainApplication.java
@@ -28,6 +28,7 @@ import android.graphics.Bitmap;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
+import android.os.Bundle;
 import android.os.Environment;
 import android.provider.ContactsContract;
 import android.widget.Toast;
@@ -44,6 +45,7 @@ import org.sufficientlysecure.keychain.util.Preferences;
 import org.sufficientlysecure.keychain.util.TlsHelper;

 import java.security.Security;
+import java.util.Arrays;
 import java.util.HashMap;


@@ -136,17 +138,31 @@ public class KeychainApplication extends Application {
    }

    /**
-     * Add OpenKeychain account to Android to link contacts with keys
+     * Add OpenKeychain account to Android to link contacts with keys and keyserver sync
     */
    public static void setupAccountAsNeeded(Context context) {
        try {
            AccountManager manager = AccountManager.get(context);
            Account[] accounts = manager.getAccountsByType(Constants.ACCOUNT_TYPE);
-            if (accounts == null || accounts.length == 0) {
+
+            if (accounts.length == 0) {
                Account account = new Account(Constants.ACCOUNT_NAME, Constants.ACCOUNT_TYPE);
                if (manager.addAccountExplicitly(account, null, null)) {
+                    // for contact sync
                    ContentResolver.setIsSyncable(account, ContactsContract.AUTHORITY, 1);
                    ContentResolver.setSyncAutomatically(account, ContactsContract.AUTHORITY, true);
+                    // for keyserver sync
+                    ContentResolver.setIsSyncable(account, Constants.PROVIDER_AUTHORITY, 1);
+                    ContentResolver.setSyncAutomatically(account, Constants.PROVIDER_AUTHORITY,
+                            true);
+                    // TODO: Increase periodic update time after testing
+                    Log.e("PHILIP", "enabled periodic keyserversync");
+                    ContentResolver.addPeriodicSync(
+                            new Account(Constants.ACCOUNT_NAME, Constants.ACCOUNT_TYPE),
+                            Constants.PROVIDER_AUTHORITY,
+                            new Bundle(),
+                            60
+                    );
                } else {
                    Log.e(Constants.TAG, "Adding account failed!");
                }
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ImportOperation.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/ImportOperation.java
@@ -503,7 +503,7 @@ public class ImportOperation extends BaseOperation<ImportKeyringParcel> {
    /**
     * Used to accumulate the results of individual key imports
     */
-    private class KeyImportAccumulator {
+    public static class KeyImportAccumulator {
        private OperationResult.OperationLog mImportLog = new OperationResult.OperationLog();
        Progressable mProgressable;
        private int mTotalKeys;
@@ -531,14 +531,6 @@ public class ImportOperation extends BaseOperation<ImportKeyringParcel> {
            }
        }

-        public int getTotalKeys() {
-            return mTotalKeys;
-        }
-
-        public int getImportedKeys() {
-            return mImportedKeys;
-        }
-
        public synchronized void accumulateKeyImport(ImportKeyResult result) {
            mImportedKeys++;

--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeyserverSyncAdapterService.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/KeyserverSyncAdapterService.java
@@ -1,12 +1,14 @@
 package org.sufficientlysecure.keychain.service;

 import android.accounts.Account;
+import android.app.AlarmManager;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.AbstractThreadedSyncAdapter;
 import android.content.ContentProviderClient;
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SyncResult;
@@ -18,6 +20,10 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.PowerManager;
+import android.os.SystemClock;
 import android.support.v4.app.NotificationCompat;

 import org.sufficientlysecure.keychain.Constants;
@@ -25,6 +31,7 @@ import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
 import org.sufficientlysecure.keychain.operations.ImportOperation;
 import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
+import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
@@ -33,62 +40,100 @@ import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.ParcelableProxy;
 import org.sufficientlysecure.keychain.util.Preferences;
+import org.sufficientlysecure.keychain.util.orbot.OrbotHelper;

 import java.util.ArrayList;
 import java.util.GregorianCalendar;
+import java.util.Random;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;

 public class KeyserverSyncAdapterService extends Service {

    private static final String ACTION_IGNORE_TOR = "ignore_tor";
+    private static final String ACTION_UPDATE_ALL = "update_all";
+    private static final String ACTION_SYNC_NOW = "sync_now";
    private static final String ACTION_DISMISS_NOTIFICATION = "cancel_sync";
    private static final String ACTION_START_ORBOT = "start_orbot";
+    private static final String ACTION_CANCEL = "cancel";
+
+    private AtomicBoolean mCancelled = new AtomicBoolean(false);

    @Override
-    public int onStartCommand(Intent intent, int flags, final int startId) {
-        Log.e("PHILIP", "Sync adapter service starting");
+    public int onStartCommand(final Intent intent, int flags, final int startId) {
+        Log.e("PHILIP", "Sync adapter service starting" + intent.getAction());
+
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
+        manager.cancel(Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT);
        switch (intent.getAction()) {
+            case ACTION_CANCEL: {
+                mCancelled.set(true);
+                break;
+            }
+            // the reason for the separation betweyeen SYNC_NOW and UPDATE_ALL is so that starting
+            // the sync directly from the notification is possible while the screen is on with
+            // UPDATE_ALL, but a postponed sync is only started if screen is off
+            case ACTION_SYNC_NOW: {
+                // this checks for screen on/off before sync, and postpones the sync if on
+                ContentResolver.requestSync(
+                        new Account(Constants.ACCOUNT_NAME, Constants.ACCOUNT_TYPE),
+                        Constants.PROVIDER_AUTHORITY,
+                        new Bundle()
+                );
+                break;
+            }
+            case ACTION_UPDATE_ALL: {
+                // does not check for screen on/off
+                asyncKeyUpdate(this, new CryptoInputParcel());
+                break;
+            }
            case ACTION_IGNORE_TOR: {
-                updateKeysFromKeyserver(this,
-                        new CryptoInputParcel(ParcelableProxy.getForNoProxy()));
-                manager.cancel(Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT);
-                stopSelf(startId);
+                asyncKeyUpdate(this, new CryptoInputParcel(ParcelableProxy.getForNoProxy()));
                break;
            }
            case ACTION_START_ORBOT: {
                Intent startOrbot = new Intent(this, OrbotRequiredDialogActivity.class);
                startOrbot.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                startOrbot.setAction(OrbotRequiredDialogActivity.ACTION_START_ORBOT);
-                startActivity(startOrbot);
-                new Handler().postDelayed(
-                        new Runnable() {
+                startOrbot.putExtra(OrbotRequiredDialogActivity.EXTRA_START_ORBOT, true);
+                Messenger messenger = new Messenger(
+                        new Handler() {
                            @Override
-                            public void run() {
-                                updateKeysFromKeyserver(KeyserverSyncAdapterService.this,
-                                        new CryptoInputParcel());
-                                stopSelf(startId);
+                            public void handleMessage(Message msg) {
+                                switch (msg.what) {
+                                    case OrbotRequiredDialogActivity.MESSAGE_ORBOT_STARTED: {
+                                        Log.e("PHILIP", "orbot activity returned");
+                                        asyncKeyUpdate(KeyserverSyncAdapterService.this,
+                                                new CryptoInputParcel());
+                                        break;
+                                    }
+                                    case OrbotRequiredDialogActivity.MESSAGE_ORBOT_IGNORE: {
+                                        asyncKeyUpdate(KeyserverSyncAdapterService.this,
+                                                new CryptoInputParcel(
+                                                        ParcelableProxy.getForNoProxy()));
+                                        break;
+                                    }
+                                    case OrbotRequiredDialogActivity.MESSAGE_DIALOG_CANCEL: {
+                                        // just stop service
+                                        stopSelf();
+                                        break;
+                                    }
+                                }
                            }
-                        },
-                        30000 // shouldn't take longer for orbot to start
+                        }
                );
-
-                manager.cancel(Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT);
+                startOrbot.putExtra(OrbotRequiredDialogActivity.EXTRA_MESSENGER, messenger);
+                startActivity(startOrbot);
                break;
            }
            case ACTION_DISMISS_NOTIFICATION: {
-                manager.cancel(Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT);
+                // notification is dismissed at the beginning
                stopSelf(startId);
                break;
            }
        }
-        // TODO: correct flag?
-        return START_REDELIVER_INTENT;
+        return START_NOT_STICKY;
    }

-    private static AtomicBoolean sCancelled = new AtomicBoolean(false);
-
    private class KeyserverSyncAdapter extends AbstractThreadedSyncAdapter {

        public KeyserverSyncAdapter() {
@@ -100,7 +145,19 @@ public class KeyserverSyncAdapterService extends Service {
                                  ContentProviderClient provider, SyncResult syncResult) {
            Log.d(Constants.TAG, "Performing a keyserver sync!");

-            updateKeysFromKeyserver(KeyserverSyncAdapterService.this, new CryptoInputParcel());
+            PowerManager pm = (PowerManager) KeyserverSyncAdapterService.this
+                    .getSystemService(Context.POWER_SERVICE);
+            @SuppressWarnings("deprecation") // our min is API 15, deprecated only in 20
+                    boolean isScreenOn = pm.isScreenOn();
+
+            if (!isScreenOn) {
+                Intent serviceIntent = new Intent(KeyserverSyncAdapterService.this,
+                        KeyserverSyncAdapterService.class);
+                serviceIntent.setAction(ACTION_UPDATE_ALL);
+                startService(serviceIntent);
+            } else {
+                postponeSync();
+            }
        }
    }

@@ -109,23 +166,178 @@ public class KeyserverSyncAdapterService extends Service {
        return new KeyserverSyncAdapter().getSyncAdapterBinder();
    }

-    public static void updateKeysFromKeyserver(Context context,
-                                               CryptoInputParcel cryptoInputParcel) {
-        /**
-         * 1. Get keys which have been updated recently and therefore do not need to
-         * be updated now
-         * 2. Get list of all keys and filter out ones that don't need to be updated
-         * 3. Update the remaining keys.
-         * At any time, if the operation is to be cancelled, the sCancelled AtomicBoolean may be set
-         */
+    private void handleUpdateResult(ImportKeyResult result) {
+        if (result.isPending()) {
+            Log.e(Constants.TAG, "Keyserver sync pending result: "
+                    + result.getRequiredInputParcel().mType);
+            // result is pending due to Orbot not being started
+            // try to start it silently, if disabled show notificationaa
+            new OrbotHelper.SilentStartManager() {
+                @Override
+                protected void onOrbotStarted() {
+                    // retry the update
+                    asyncKeyUpdate(KeyserverSyncAdapterService.this,
+                            new CryptoInputParcel());
+                }
+
+                @Override
+                protected void onSilentStartDisabled() {
+                    // show notification
+                    NotificationManager manager =
+                            (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
+                    manager.notify(Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT,
+                            getOrbotNoification(KeyserverSyncAdapterService.this));
+                }
+            }.startOrbotAndListen(this, false);
+        } else if (isUpdateCancelled()) {
+            Log.d(Constants.TAG, "Keyserver sync cancelled");
+            postponeSync();
+        } else {
+            Log.d(Constants.TAG, "Keyserver sync completed: Updated: " + result.mUpdatedKeys
+                    + " Failed: " + result.mBadKeys);
+            stopSelf();
+        }
+    }
+
+    private void postponeSync() {
+        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
+        Intent serviceIntent = new Intent(this, KeyserverSyncAdapterService.class);
+        serviceIntent.setAction(ACTION_SYNC_NOW);
+        PendingIntent pi = PendingIntent.getService(this, 0, serviceIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT);
+        alarmManager.set(
+                AlarmManager.ELAPSED_REALTIME_WAKEUP,
+                SystemClock.elapsedRealtime() + 30 * 1000,
+                pi
+        );
+    }
+
+    private void asyncKeyUpdate(final Context context,
+                                final CryptoInputParcel cryptoInputParcel) {
+        Log.e("PHILIP", "async key update starting");
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                ImportKeyResult result = updateKeysFromKeyserver(context, cryptoInputParcel);
+                handleUpdateResult(result);
+            }
+        }).start();
+    }
+
+    private synchronized ImportKeyResult updateKeysFromKeyserver(final Context context,
+                                                    final CryptoInputParcel cryptoInputParcel) {
+        mCancelled.set(false);
+
+        ArrayList<ParcelableKeyRing> keyList = getKeysToUpdate(context);
+
+        if (isUpdateCancelled()) { // if we've already been cancelled
+            return new ImportKeyResult(OperationResult.RESULT_CANCELLED,
+                    new OperationResult.OperationLog());
+        }
+
+        if (cryptoInputParcel.getParcelableProxy() == null) {
+            // no explicit proxy, retrieve from preferences. Check if we should do a staggered sync
+            if (Preferences.getPreferences(context).getProxyPrefs().torEnabled) {
+                return staggeredUpdate(context, keyList, cryptoInputParcel);
+            } else {
+                return directUpdate(context, keyList, cryptoInputParcel);
+            }
+        } else {
+            return directUpdate(context, keyList, cryptoInputParcel);
+        }
+    }
+
+    private ImportKeyResult directUpdate(Context context, ArrayList<ParcelableKeyRing> keyList,
+                                         CryptoInputParcel cryptoInputParcel) {
+        Log.d(Constants.TAG, "Starting normal update");
+        ImportOperation importOp = new ImportOperation(context, new ProviderHelper(context), null);
+        return importOp.execute(
+                new ImportKeyringParcel(keyList,
+                        Preferences.getPreferences(context).getPreferredKeyserver()),
+                cryptoInputParcel
+        );
+    }
+
+
+    /**
+     * will perform a staggered update of user's keys using delays to ensure new Tor circuits, as
+     * performed by parcimonie. Relevant issue and method at:
+     * https://github.com/open-keychain/open-keychain/issues/1337
+     *
+     * @return result of the sync
+     */
+    private ImportKeyResult staggeredUpdate(Context context, ArrayList<ParcelableKeyRing> keyList,
+                                            CryptoInputParcel cryptoInputParcel) {
+        Log.d(Constants.TAG, "Starting staggered update");
+        // assuming maxCircuitDirtiness is 10min in Tor
+        // final int MAX_CIRCUIT_DIRTINESS = (int) TimeUnit.MINUTES.toSeconds(10);
+        // TODO: PHILIP remove after testing
+        final int MAX_CIRCUIT_DIRTINESS = (int) TimeUnit.MINUTES.toSeconds(1);
+        // final int WEEK_IN_SECONDS = (int) TimeUnit.DAYS.toSeconds(7);
+        final int WEEK_IN_SECONDS = 0;
+        ImportOperation.KeyImportAccumulator accumulator
+                = new ImportOperation.KeyImportAccumulator(keyList.size(), null);
+        for (ParcelableKeyRing keyRing : keyList) {
+            int waitTime;
+            int staggeredTime = new Random().nextInt(1 + 2 * (WEEK_IN_SECONDS / keyList.size()));
+            if (staggeredTime >= MAX_CIRCUIT_DIRTINESS) {
+                waitTime = staggeredTime;
+            } else {
+                waitTime = MAX_CIRCUIT_DIRTINESS + new Random().nextInt(MAX_CIRCUIT_DIRTINESS);
+            }
+            Log.d(Constants.TAG, "Updating key with fingerprint " + keyRing.mExpectedFingerprint +
+                    " with a wait time of " + waitTime + "s");
+            try {
+                Thread.sleep(waitTime * 1000);
+            } catch (InterruptedException e) {
+                Log.e(Constants.TAG, "Exception during sleep between key updates", e);
+                // skip this one
+                continue;
+            }
+            ArrayList<ParcelableKeyRing> keyWrapper = new ArrayList<>();
+            keyWrapper.add(keyRing);
+            if (isUpdateCancelled()) {
+                return new ImportKeyResult(ImportKeyResult.RESULT_CANCELLED,
+                        new OperationResult.OperationLog());
+            }
+            ImportKeyResult result =
+                    new ImportOperation(context, new ProviderHelper(context), null, mCancelled)
+                            .execute(
+                                    new ImportKeyringParcel(
+                                            keyWrapper,
+                                            Preferences.getPreferences(context)
+                                                    .getPreferredKeyserver()
+                                    ),
+                                    cryptoInputParcel
+                            );
+            if (result.isPending()) {
+                return result;
+            }
+            accumulator.accumulateKeyImport(result);
+        }
+        return accumulator.getConsolidatedResult();
+    }
+
+    /**
+     * 1. Get keys which have been updated recently and therefore do not need to
+     * be updated now
+     * 2. Get list of all keys and filter out ones that don't need to be updated
+     * 3. Return keys to be updated
+     *
+     * @return list of keys that require update
+     */
+    private ArrayList<ParcelableKeyRing> getKeysToUpdate(Context context) {

        // 1. Get keys which have been updated recently and don't need to updated now
        final int INDEX_UPDATED_KEYS_MASTER_KEY_ID = 0;
        final int INDEX_LAST_UPDATED = 1;

-        final long TIME_MAX = TimeUnit.DAYS.toSeconds(7);
-        final long CURRENT_TIME = GregorianCalendar.getInstance().get(GregorianCalendar.SECOND);
-        Log.e("PHILIP", "week: " + TIME_MAX);
+        // all time in seconds not milliseconds
+        // TODO: PHILIP correct TIME_MAX after testing
+        // final long TIME_MAX = TimeUnit.DAYS.toSeconds(7);
+        final long TIME_MAX = 1;
+        final long CURRENT_TIME = GregorianCalendar.getInstance().getTimeInMillis() / 1000;
+        Log.e("PHILIP", "week: " + TIME_MAX + " current: " + CURRENT_TIME);
        Cursor updatedKeysCursor = context.getContentResolver().query(
                KeychainContract.UpdatedKeys.CONTENT_URI,
                new String[]{
@@ -161,7 +373,7 @@ public class KeyserverSyncAdapterService extends Service {
        );

        if (keyCursor == null) {
-            return;
+            return new ArrayList<>();
        }

        ArrayList<ParcelableKeyRing> keyList = new ArrayList<>();
@@ -179,49 +391,39 @@ public class KeyserverSyncAdapterService extends Service {
        }
        keyCursor.close();

-        if (sCancelled.get()) {
-            // if we've already been cancelled
-            return;
-        }
-
-        // 3. Actually update the keys
-        Log.e("PHILIP", keyList.toString());
-        ImportOperation importOp = new ImportOperation(context, new ProviderHelper(context), null);
-        ImportKeyResult result = importOp.execute(
-                new ImportKeyringParcel(keyList,
-                        Preferences.getPreferences(context).getPreferredKeyserver()),
-                cryptoInputParcel
-        );
-        if (result.isPending()) {
-            NotificationManager manager =
-                    (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
-            manager.notify(Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT,
-                    getOrbotNoification(context));
-
-            Log.d(Constants.TAG, "Keyserver sync failed due to pending result " +
-                    result.getRequiredInputParcel().mType);
-        } else {
-            Log.d(Constants.TAG, "Background keyserver sync completed: new " + result.mNewKeys
-                    + " updated " + result.mUpdatedKeys + " bad " + result.mBadKeys);
-        }
+        return keyList;
    }

-    public static void preventAndCancelUpdates() {
-        // TODO: PHILIP uncomment!
-        // sCancelled.set(true);
+    private boolean isUpdateCancelled() {
+        return mCancelled.get();
    }

-    public static void allowUpdates() {
-        sCancelled.set(false);
+    /**
+     * will cancel an update already in progress
+     *
+     * @param context used to send an Intent to the service requesting cancellation.
+     */
+    public static void cancelUpdates(Context context) {
+        Intent intent = new Intent(context, KeyserverSyncAdapterService.class);
+        intent.setAction(ACTION_CANCEL);
+        context.startService(intent);
    }

-    private static Notification getOrbotNoification(Context context) {
+    // TODO: PHILIP remove!
+    @Override
+    public void onDestroy() {
+        Log.e("PHILIP", "onDestroy");
+        super.onDestroy();
+    }
+
+    private Notification getOrbotNoification(Context context) {
        // TODO: PHILIP work in progress
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
        builder.setSmallIcon(R.drawable.ic_stat_notify_24dp)
                .setLargeIcon(getBitmap(R.drawable.ic_launcher, context))
                .setContentTitle(context.getString(R.string.keyserver_sync_orbot_notif_title))
-                .setContentText(context.getString(R.string.keyserver_sync_orbot_notif_msg));
+                .setContentText(context.getString(R.string.keyserver_sync_orbot_notif_msg))
+                .setAutoCancel(true);

        // In case the user decides to not use tor
        Intent ignoreTorIntent = new Intent(context, KeyserverSyncAdapterService.class);
@@ -237,21 +439,6 @@ public class KeyserverSyncAdapterService extends Service {
                context.getString(R.string.keyserver_sync_orbot_notif_ignore),
                ignoreTorPi);

-        // not enough space to show it
-        Intent dismissIntent = new Intent(context, KeyserverSyncAdapterService.class);
-        dismissIntent.setAction(ACTION_DISMISS_NOTIFICATION);
-        PendingIntent dismissPi = PendingIntent.getService(
-                context,
-                0, // security not issue since we're giving this pending intent to Notification Manager
-                dismissIntent,
-                PendingIntent.FLAG_CANCEL_CURRENT
-        );
-
-        /*builder.addAction(R.drawable.abc_ic_clear_mtrl_alpha,
-                context.getString(android.R.string.cancel),
-                dismissPi
-        );*/
-
        Intent startOrbotIntent = new Intent(context, KeyserverSyncAdapterService.class);
        startOrbotIntent.setAction(ACTION_START_ORBOT);
        PendingIntent startOrbotPi = PendingIntent.getService(
@@ -261,7 +448,7 @@ public class KeyserverSyncAdapterService extends Service {
                PendingIntent.FLAG_CANCEL_CURRENT
        );

-        builder.addAction(R.drawable.abc_ic_clear_mtrl_alpha,
+        builder.addAction(R.drawable.abc_ic_commit_search_api_mtrl_alpha,
                context.getString(R.string.keyserver_sync_orbot_notif_start),
                startOrbotPi
        );
@@ -270,19 +457,8 @@ public class KeyserverSyncAdapterService extends Service {
        return builder.build();
    }

-    /**
-     * will perform a staggered update of user's keys using delays to ensure new Tor circuits, as
-     * performed by parcimonie
-     *
-     * @return result of the sync
-     */
-    private static ImportKeyResult staggeredSync() {
-        // TODO: WIP
-        return null;
-    }
-
    // from de.azapps.mirakel.helper.Helpers from https://github.com/MirakelX/mirakel-android
-    private static Bitmap getBitmap(int resId, Context context) {
+    private Bitmap getBitmap(int resId, Context context) {
        int mLargeIconWidth = (int) context.getResources().getDimension(
                android.R.dimen.notification_large_icon_width);
        int mLargeIconHeight = (int) context.getResources().getDimension(
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java
@@ -18,13 +18,9 @@

 package org.sufficientlysecure.keychain.ui;

-
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.HashMap;
-
 import android.animation.ObjectAnimator;
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
@@ -64,13 +60,14 @@ import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
 import org.sufficientlysecure.keychain.provider.KeychainDatabase;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
 import org.sufficientlysecure.keychain.service.ConsolidateInputParcel;
 import org.sufficientlysecure.keychain.service.ImportKeyringParcel;
 import org.sufficientlysecure.keychain.service.KeyserverSyncAdapterService;
-import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.ui.adapter.KeyAdapter;
 import org.sufficientlysecure.keychain.ui.base.CryptoOperationHelper;
 import org.sufficientlysecure.keychain.ui.util.FormattingUtils;
+import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.ui.util.Notify;
 import org.sufficientlysecure.keychain.util.FabContainer;
 import org.sufficientlysecure.keychain.util.Log;
@@ -78,6 +75,10 @@ import org.sufficientlysecure.keychain.util.Preferences;
 import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
 import se.emilsjolander.stickylistheaders.StickyListHeadersListView;

+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+
 /**
 * Public key list with sticky list headers. It does _not_ extend ListFragment because it uses
 * StickyListHeaders library which does not extend upon ListView.
@@ -520,9 +521,7 @@ public class KeyListFragment extends LoaderFragment
    }

    private void updateAllKeys() {
-        // TODO: PHILIP just for testing, remove!
-        KeyserverSyncAdapterService.updateKeysFromKeyserver(getActivity(), new CryptoInputParcel());
-        /*Activity activity = getActivity();
+        Activity activity = getActivity();
        if (activity == null) {
            return;
        }
@@ -536,7 +535,7 @@ public class KeyListFragment extends LoaderFragment
        );

        if (cursor == null) {
-            Notify.create(activity, R.string.error_loading_keys, Style.ERROR);
+            Notify.create(activity, R.string.error_loading_keys, Notify.Style.ERROR);
            return;
        }

@@ -563,7 +562,7 @@ public class KeyListFragment extends LoaderFragment

        mImportOpHelper = new CryptoOperationHelper<>(1, this,
                this, R.string.progress_updating);
-        mImportOpHelper.cryptoOperation();*/
+        mImportOpHelper.cryptoOperation();
    }

    private void consolidate() {
@@ -647,18 +646,6 @@ public class KeyListFragment extends LoaderFragment
        }
    }

-    @Override
-    public void onResume() {
-        super.onResume();
-        KeyserverSyncAdapterService.preventAndCancelUpdates();
-    }
-
-    @Override
-    public void onPause() {
-        super.onPause();
-        KeyserverSyncAdapterService.allowUpdates();
-    }
-
    @Override
    public void fabMoveUp(int height) {
        ObjectAnimator anim = ObjectAnimator.ofFloat(mFab, "translationY", 0, -height);
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/MainActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/MainActivity.java
@@ -19,9 +19,6 @@

 package org.sufficientlysecure.keychain.ui;

-import android.accounts.Account;
-import android.accounts.AccountManager;
-import android.content.ContentResolver;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
@@ -40,14 +37,11 @@ import com.mikepenz.materialdrawer.DrawerBuilder;
 import com.mikepenz.materialdrawer.model.PrimaryDrawerItem;
 import com.mikepenz.materialdrawer.model.interfaces.IDrawerItem;

-import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.operations.results.OperationResult;
 import org.sufficientlysecure.keychain.remote.ui.AppsListFragment;
-import org.sufficientlysecure.keychain.service.KeyserverSyncAdapterService;
 import org.sufficientlysecure.keychain.ui.base.BaseNfcActivity;
 import org.sufficientlysecure.keychain.util.FabContainer;
-import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Preferences;

 public class MainActivity extends BaseNfcActivity implements FabContainer, OnBackStackChangedListener {
@@ -170,19 +164,6 @@ public class MainActivity extends BaseNfcActivity implements FabContainer, OnBac
            }
        }

-        enablePeriodicKeyserverSync();
-
-    }
-
-    private void enablePeriodicKeyserverSync() {
-        // TODO: Increase periodic update time after testing
-        Log.e("PHILIP", "enabled periodic keyserversybc");
-        ContentResolver.addPeriodicSync(
-                new Account(Constants.ACCOUNT_NAME, Constants.ACCOUNT_TYPE),
-                Constants.PROVIDER_AUTHORITY,
-                new Bundle(),
-                2*60
-        );
    }

    private void setFragment(Fragment fragment, boolean addToBackStack) {
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/OrbotRequiredDialogActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/OrbotRequiredDialogActivity.java
@@ -18,12 +18,20 @@

 package org.sufficientlysecure.keychain.ui;

+import android.app.ProgressDialog;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
 import android.support.v4.app.FragmentActivity;

+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.compatibility.DialogFragmentWorkaround;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
+import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.ParcelableProxy;
 import org.sufficientlysecure.keychain.util.orbot.OrbotHelper;

@@ -34,8 +42,14 @@ import org.sufficientlysecure.keychain.util.orbot.OrbotHelper;
 public class OrbotRequiredDialogActivity extends FragmentActivity
        implements OrbotHelper.DialogActions {

+    public static final int MESSAGE_ORBOT_STARTED = 1;
+    public static final int MESSAGE_ORBOT_IGNORE = 2;
+    public static final int MESSAGE_DIALOG_CANCEL = 3;
+
    // if suppplied and true will start Orbot directly without showing dialog
    public static final String EXTRA_START_ORBOT = "start_orbot";
+    // used for communicating results when triggered from a service
+    public static final String EXTRA_MESSENGER = "messenger";

    // to provide any previous crypto input into which proxy preference is merged
    public static final String EXTRA_CRYPTO_INPUT = "extra_crypto_input";
@@ -43,6 +57,9 @@ public class OrbotRequiredDialogActivity extends FragmentActivity
    public static final String RESULT_CRYPTO_INPUT = "result_crypto_input";

    private CryptoInputParcel mCryptoInputParcel;
+    private Messenger mMessenger;
+
+    private ProgressDialog mShowOrbotProgressDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
@@ -54,9 +71,15 @@ public class OrbotRequiredDialogActivity extends FragmentActivity
            mCryptoInputParcel = new CryptoInputParcel();
        }

+        mMessenger = getIntent().getParcelableExtra(EXTRA_MESSENGER);
+
        boolean startOrbotDirect = getIntent().getBooleanExtra(EXTRA_START_ORBOT, false);
        if (startOrbotDirect) {
-            OrbotHelper.bestPossibleOrbotStart(this, this);
+            mShowOrbotProgressDialog = new ProgressDialog(this);
+            mShowOrbotProgressDialog.setTitle(R.string.progress_starting_orbot);
+            mShowOrbotProgressDialog.setCancelable(false);
+            mShowOrbotProgressDialog.show();
+            OrbotHelper.bestPossibleOrbotStart(this, this, false);
        } else {
            showDialog();
        }
@@ -84,13 +107,32 @@ public class OrbotRequiredDialogActivity extends FragmentActivity
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case OrbotHelper.START_TOR_RESULT: {
-                onOrbotStarted(); // assumption that orbot was started, no way to tell for sure
+                dismissOrbotProgressDialog();
+                // unfortunately, this result is returned immediately and not when Orbot is started
+                // 10s is approximately the longest time Orbot has taken to start
+                new Handler().postDelayed(new Runnable() {
+                    @Override
+                    public void run() {
+                        onOrbotStarted(); // assumption that orbot was started
+                    }
+                }, 10000);
            }
        }
    }

+    /**
+     * for when Orbot is started without showing the dialog by the EXTRA_START_ORBOT intent extra
+     */
+    private void dismissOrbotProgressDialog() {
+        if (mShowOrbotProgressDialog != null) {
+            mShowOrbotProgressDialog.dismiss();
+        }
+    }
+
    @Override
    public void onOrbotStarted() {
+        dismissOrbotProgressDialog();
+        sendMessage(MESSAGE_ORBOT_STARTED);
        Intent intent = new Intent();
        // send back unmodified CryptoInputParcel for a retry
        intent.putExtra(RESULT_CRYPTO_INPUT, mCryptoInputParcel);
@@ -100,6 +142,7 @@ public class OrbotRequiredDialogActivity extends FragmentActivity

    @Override
    public void onNeutralButton() {
+        sendMessage(MESSAGE_ORBOT_IGNORE);
        Intent intent = new Intent();
        mCryptoInputParcel.addParcelableProxy(ParcelableProxy.getForNoProxy());
        intent.putExtra(RESULT_CRYPTO_INPUT, mCryptoInputParcel);
@@ -109,6 +152,19 @@ public class OrbotRequiredDialogActivity extends FragmentActivity

    @Override
    public void onCancel() {
+        sendMessage(MESSAGE_DIALOG_CANCEL);
        finish();
    }
+
+    private void sendMessage(int what) {
+        if (mMessenger != null) {
+            Message msg = Message.obtain();
+            msg.what = what;
+            try {
+                mMessenger.send(msg);
+            } catch (RemoteException e) {
+                Log.e(Constants.TAG, "Could not deliver message", e);
+            }
+        }
+    }
 }
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseActivity.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseActivity.java
@@ -30,6 +30,7 @@ import android.view.ViewGroup;
 import android.widget.TextView;

 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.service.KeyserverSyncAdapterService;
 import org.sufficientlysecure.keychain.ui.util.ThemeChanger;

 /**
@@ -51,6 +52,7 @@ public abstract class BaseActivity extends AppCompatActivity {
    @Override
    protected void onResume() {
        super.onResume();
+        KeyserverSyncAdapterService.cancelUpdates(this);

        if (mThemeChanger.changeTheme()) {
            Intent intent = getIntent();
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/orbot/OrbotHelper.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/orbot/OrbotHelper.java
@@ -361,7 +361,7 @@ public class OrbotHelper {
                            .show(fragmentActivity.getSupportFragmentManager(),
                                    "OrbotHelperOrbotStartDialog");
                }
-            }.startOrbotAndListen(fragmentActivity);
+            }.startOrbotAndListen(fragmentActivity, true);

            return false;
        } else {
@@ -385,7 +385,8 @@ public class OrbotHelper {
     * activities wishing to respond to a change in Orbot state.
     */
    public static void bestPossibleOrbotStart(final DialogActions dialogActions,
-                                              final Activity activity) {
+                                              final Activity activity,
+                                              boolean showProgress) {
        new SilentStartManager() {

            @Override
@@ -397,23 +398,23 @@ public class OrbotHelper {
            protected void onSilentStartDisabled() {
                requestShowOrbotStart(activity);
            }
-        }.startOrbotAndListen(activity);
+        }.startOrbotAndListen(activity, showProgress);
    }

    /**
     * base class for listening to silent orbot starts. Also handles display of progress dialog.
     */
-    private static abstract class SilentStartManager {
+    public static abstract class SilentStartManager {

        private ProgressDialog mProgressDialog;

-        public void startOrbotAndListen(Context context) {
-            mProgressDialog = new ProgressDialog(ThemeChanger.getDialogThemeWrapper(context));
-            mProgressDialog.setMessage(context.getString(R.string.progress_starting_orbot));
-            mProgressDialog.setCancelable(false);
-            mProgressDialog.show();
+        public void startOrbotAndListen(final Context context, final boolean showProgress) {
+            Log.e("PHILIP", "starting orbot listener");
+            if (showProgress) {
+                showProgressDialog(context);
+            }

-            BroadcastReceiver receiver = new BroadcastReceiver() {
+            final BroadcastReceiver receiver = new BroadcastReceiver() {
                @Override
                public void onReceive(Context context, Intent intent) {
                    switch (intent.getStringExtra(OrbotHelper.EXTRA_STATUS)) {
@@ -423,14 +424,18 @@ public class OrbotHelper {
                            new Handler().postDelayed(new Runnable() {
                                @Override
                                public void run() {
-                                    mProgressDialog.dismiss();
+                                    if (showProgress) {
+                                        mProgressDialog.dismiss();
+                                    }
                                    onOrbotStarted();
                                }
                            }, 1000);
                            break;
                        case OrbotHelper.STATUS_STARTS_DISABLED:
                            context.unregisterReceiver(this);
-                            mProgressDialog.dismiss();
+                            if (showProgress) {
+                                mProgressDialog.dismiss();
+                            }
                            onSilentStartDisabled();
                            break;

@@ -444,6 +449,13 @@ public class OrbotHelper {
            requestStartTor(context);
        }

+        private void showProgressDialog(Context context) {
+            mProgressDialog = new ProgressDialog(ThemeChanger.getDialogThemeWrapper(context));
+            mProgressDialog.setMessage(context.getString(R.string.progress_starting_orbot));
+            mProgressDialog.setCancelable(false);
+            mProgressDialog.show();
+        }
+
        protected abstract void onOrbotStarted();

        protected abstract void onSilentStartDisabled();