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/*
* Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com>
*
* 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
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.sufficientlysecure.keychain.service;
import android.app.Service;
import android.content.Intent;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.Parcelable;
import android.os.RemoteException;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.operations.BaseOperation;
import org.sufficientlysecure.keychain.operations.BenchmarkOperation;
import org.sufficientlysecure.keychain.operations.CertifyOperation;
import org.sufficientlysecure.keychain.operations.ConsolidateOperation;
import org.sufficientlysecure.keychain.operations.DeleteOperation;
import org.sufficientlysecure.keychain.operations.EditKeyOperation;
import org.sufficientlysecure.keychain.operations.BackupOperation;
import org.sufficientlysecure.keychain.operations.ImportOperation;
import org.sufficientlysecure.keychain.operations.KeybaseVerificationOperation;
import org.sufficientlysecure.keychain.operations.InputDataOperation;
import org.sufficientlysecure.keychain.operations.ChangeUnlockOperation;
import org.sufficientlysecure.keychain.operations.PromoteKeyOperation;
import org.sufficientlysecure.keychain.operations.RevokeOperation;
import org.sufficientlysecure.keychain.operations.SignEncryptOperation;
import org.sufficientlysecure.keychain.operations.UploadOperation;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyOperation;
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyInputParcel;
import org.sufficientlysecure.keychain.pgp.Progressable;
import org.sufficientlysecure.keychain.pgp.SignEncryptParcel;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.ServiceProgressHandler.MessageStatus;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.util.Log;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* This Service contains all important long lasting operations for OpenKeychain. It receives Intents with
* data from the activities or other apps, executes them, and stops itself after doing them.
*/
public class KeychainService extends Service implements Progressable {
// messenger for communication (hack)
public static final String EXTRA_MESSENGER = "messenger";
// extras for operation
public static final String EXTRA_OPERATION_INPUT = "op_input";
public static final String EXTRA_CRYPTO_INPUT = "crypto_input";
public static final String ACTION_CANCEL = "action_cancel";
// this attribute can possibly merged with the one above? not sure...
private AtomicBoolean mActionCanceled = new AtomicBoolean(false);
ThreadLocal<Messenger> mMessenger = new ThreadLocal<>();
@Override
public IBinder onBind(Intent intent) {
return null;
}
/**
* This is run on the main thread, we need to spawn a runnable which runs on another thread for the actual operation
*/
@Override
public int onStartCommand(final Intent intent, int flags, int startId) {
if (intent.getAction() != null && intent.getAction().equals(ACTION_CANCEL)) {
mActionCanceled.set(true);
return START_NOT_STICKY;
}
Runnable actionRunnable = new Runnable() {
@Override
public void run() {
// We have not been cancelled! (yet)
mActionCanceled.set(false);
Bundle extras = intent.getExtras();
// Set messenger for communication (for this particular thread)
mMessenger.set(extras.<Messenger>getParcelable(EXTRA_MESSENGER));
// Input
Parcelable inputParcel = extras.getParcelable(EXTRA_OPERATION_INPUT);
CryptoInputParcel cryptoInput = extras.getParcelable(EXTRA_CRYPTO_INPUT);
// Operation
BaseOperation op;
// just for brevity
KeychainService outerThis = KeychainService.this;
if (inputParcel instanceof SignEncryptParcel) {
op = new SignEncryptOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof PgpDecryptVerifyInputParcel) {
op = new PgpDecryptVerifyOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof SaveKeyringParcel) {
op = new EditKeyOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof ChangeUnlockParcel) {
op = new ChangeUnlockOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof RevokeKeyringParcel) {
op = new RevokeOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof CertifyActionsParcel) {
op = new CertifyOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof DeleteKeyringParcel) {
op = new DeleteOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof PromoteKeyringParcel) {
op = new PromoteKeyOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof ImportKeyringParcel) {
op = new ImportOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof BackupKeyringParcel) {
op = new BackupOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof UploadKeyringParcel) {
op = new UploadOperation(outerThis, new ProviderHelper(outerThis), outerThis, mActionCanceled);
} else if (inputParcel instanceof ConsolidateInputParcel) {
op = new ConsolidateOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof KeybaseVerificationParcel) {
op = new KeybaseVerificationOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof InputDataParcel) {
op = new InputDataOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else if (inputParcel instanceof BenchmarkInputParcel) {
op = new BenchmarkOperation(outerThis, new ProviderHelper(outerThis), outerThis);
} else {
throw new AssertionError("Unrecognized input parcel in KeychainService!");
}
@SuppressWarnings("unchecked") // this is unchecked, we make sure it's the correct op above!
OperationResult result = op.execute(inputParcel, cryptoInput);
sendMessageToHandler(MessageStatus.OKAY, result);
}
};
Thread actionThread = new Thread(actionRunnable);
actionThread.start();
return START_NOT_STICKY;
}
private void sendMessageToHandler(MessageStatus status, Integer arg2, Bundle data) {
Message msg = Message.obtain();
assert msg != null;
msg.arg1 = status.ordinal();
if (arg2 != null) {
msg.arg2 = arg2;
}
if (data != null) {
msg.setData(data);
}
try {
mMessenger.get().send(msg);
} catch (RemoteException e) {
Log.w(Constants.TAG, "Exception sending message, Is handler present?", e);
} catch (NullPointerException e) {
Log.w(Constants.TAG, "Messenger is null!", e);
}
}
private void sendMessageToHandler(MessageStatus status, OperationResult data) {
Bundle bundle = new Bundle();
bundle.putParcelable(OperationResult.EXTRA_RESULT, data);
sendMessageToHandler(status, null, bundle);
}
private void sendMessageToHandler(MessageStatus status) {
sendMessageToHandler(status, null, null);
}
/**
* Set progress of ProgressDialog by sending message to handler on UI thread
*/
@Override
public void setProgress(String message, int progress, int max) {
Log.d(Constants.TAG, "Send message by setProgress with progress=" + progress + ", max="
+ max);
Bundle data = new Bundle();
if (message != null) {
data.putString(ServiceProgressHandler.DATA_MESSAGE, message);
}
data.putInt(ServiceProgressHandler.DATA_PROGRESS, progress);
data.putInt(ServiceProgressHandler.DATA_PROGRESS_MAX, max);
sendMessageToHandler(MessageStatus.UPDATE_PROGRESS, null, data);
}
@Override
public void setProgress(int resourceId, int progress, int max) {
setProgress(getString(resourceId), progress, max);
}
@Override
public void setProgress(int progress, int max) {
setProgress(null, progress, max);
}
@Override
public void setPreventCancel() {
sendMessageToHandler(MessageStatus.PREVENT_CANCEL);
}
}
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