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package org.sufficientlysecure.keychain.service;
import android.accounts.Account;
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.Context;
import android.content.Intent;
import android.content.SyncResult;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import org.sufficientlysecure.keychain.Constants;
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.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.ui.MainActivity;
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 java.util.ArrayList;
import java.util.GregorianCalendar;
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";
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.e("PHILIP", "Sync adapter service starting");
switch (intent.getAction()) {
case ACTION_IGNORE_TOR: {
updateKeysFromKeyserver(this,
new CryptoInputParcel(ParcelableProxy.getForNoProxy()));
break;
}
}
// TODO: correct flag?
return START_NOT_STICKY;
}
private static AtomicBoolean sCancelled = new AtomicBoolean(false);
private class KeyserverSyncAdapter extends AbstractThreadedSyncAdapter {
public KeyserverSyncAdapter() {
super(KeyserverSyncAdapterService.this, true);
}
@Override
public void onPerformSync(Account account, Bundle extras, String authority,
ContentProviderClient provider, SyncResult syncResult) {
Log.d(Constants.TAG, "Performing a keyserver sync!");
updateKeysFromKeyserver(KeyserverSyncAdapterService.this, new CryptoInputParcel());
}
}
@Override
public IBinder onBind(Intent intent) {
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
*/
// 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_DAY = TimeUnit.DAYS.toSeconds(1);
final long CURRENT_TIME = GregorianCalendar.getInstance().get(GregorianCalendar.SECOND);
Log.e("PHILIP", "day: " + TIME_DAY);
Cursor updatedKeysCursor = context.getContentResolver().query(
KeychainContract.UpdatedKeys.CONTENT_URI,
new String[]{
KeychainContract.UpdatedKeys.MASTER_KEY_ID,
KeychainContract.UpdatedKeys.LAST_UPDATED
},
"? - " + KeychainContract.UpdatedKeys.LAST_UPDATED + " < " + TIME_DAY,
new String[]{"" + CURRENT_TIME},
null
);
ArrayList<Long> ignoreMasterKeyIds = new ArrayList<>();
while (updatedKeysCursor.moveToNext()) {
long masterKeyId = updatedKeysCursor.getLong(INDEX_UPDATED_KEYS_MASTER_KEY_ID);
Log.d(Constants.TAG, "Keyserver sync: {" + masterKeyId + "} last updated at {"
+ updatedKeysCursor.getLong(INDEX_LAST_UPDATED) + "}s");
ignoreMasterKeyIds.add(masterKeyId);
}
updatedKeysCursor.close();
// 2. Make a list of public keys which should be updated
final int INDEX_MASTER_KEY_ID = 0;
final int INDEX_FINGERPRINT = 1;
Cursor keyCursor = context.getContentResolver().query(
KeychainContract.KeyRings.buildUnifiedKeyRingsUri(),
new String[]{
KeychainContract.KeyRings.MASTER_KEY_ID,
KeychainContract.KeyRings.FINGERPRINT
},
null,
null,
null
);
if (keyCursor == null) {
return;
}
ArrayList<ParcelableKeyRing> keyList = new ArrayList<>();
while (keyCursor.moveToNext()) {
long keyId = keyCursor.getLong(INDEX_MASTER_KEY_ID);
if (ignoreMasterKeyIds.contains(keyId)) {
continue;
}
String fingerprint = KeyFormattingUtils
.convertFingerprintToHex(keyCursor.getBlob(INDEX_FINGERPRINT));
String hexKeyId = KeyFormattingUtils
.convertKeyIdToHex(keyId);
// we aren't updating from keybase as of now
keyList.add(new ParcelableKeyRing(fingerprint, hexKeyId, null));
}
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);
}
}
public static void preventAndCancelUpdates() {
// TODO: PHILIP uncomment!
// sCancelled.set(true);
}
public static void allowUpdates() {
sCancelled.set(false);
}
private static 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));
// In case the user decides to not use tor
Intent ignoreTorIntent = new Intent(context, KeyserverSyncAdapterService.class);
ignoreTorIntent.setAction(ACTION_IGNORE_TOR);
PendingIntent ignoreTorPi = PendingIntent.getService(
context,
Constants.Notification.KEYSERVER_SYNC_FAIL_ORBOT,
ignoreTorIntent,
PendingIntent.FLAG_CANCEL_CURRENT
);
builder.addAction(R.drawable.abc_ic_clear_mtrl_alpha,
context.getString(R.string.keyserver_sync_orbot_notif_ignore),
ignoreTorPi);
return builder.build();
}
// from de.azapps.mirakel.helper.Helpers from https://github.com/MirakelX/mirakel-android
private static 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(
android.R.dimen.notification_large_icon_height);
Drawable d;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
// noinspection deprecation (can't help it at this api level)
d = context.getResources().getDrawable(resId);
} else {
d = context.getDrawable(resId);
}
if (d == null) {
return null;
}
Bitmap b = Bitmap.createBitmap(mLargeIconWidth, mLargeIconHeight, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b);
d.setBounds(0, 0, mLargeIconWidth, mLargeIconHeight);
d.draw(c);
return b;
}
}
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