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/*
* Copyright (C) 2015 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2015 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.ui.base;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Message;
import android.support.v4.app.Fragment;
import org.sufficientlysecure.keychain.operations.results.InputPendingResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
import org.sufficientlysecure.keychain.ui.NfcOperationActivity;
import org.sufficientlysecure.keychain.ui.PassphraseDialogActivity;
/**
* All fragments executing crypto operations need to extend this class.
*/
public abstract class CryptoOperationFragment extends Fragment {
public static final int REQUEST_CODE_PASSPHRASE = 0x00008001;
public static final int REQUEST_CODE_NFC = 0x00008002;
private void initiateInputActivity(RequiredInputParcel requiredInput) {
switch (requiredInput.mType) {
case NFC_DECRYPT:
case NFC_SIGN: {
Intent intent = new Intent(getActivity(), NfcOperationActivity.class);
intent.putExtra(NfcOperationActivity.EXTRA_REQUIRED_INPUT, requiredInput);
startActivityForResult(intent, REQUEST_CODE_NFC);
return;
}
case PASSPHRASE:
case PASSPHRASE_SYMMETRIC: {
Intent intent = new Intent(getActivity(), PassphraseDialogActivity.class);
intent.putExtra(PassphraseDialogActivity.EXTRA_REQUIRED_INPUT, requiredInput);
startActivityForResult(intent, REQUEST_CODE_PASSPHRASE);
return;
}
}
throw new RuntimeException("Unhandled pending result!");
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_CANCELED) {
onCryptoOperationCancelled();
return;
}
switch (requestCode) {
case REQUEST_CODE_PASSPHRASE: {
if (resultCode == Activity.RESULT_OK && data != null) {
CryptoInputParcel cryptoInput =
data.getParcelableExtra(PassphraseDialogActivity.RESULT_CRYPTO_INPUT);
cryptoOperation(cryptoInput);
return;
}
break;
}
case REQUEST_CODE_NFC: {
if (resultCode == Activity.RESULT_OK && data != null) {
CryptoInputParcel cryptoInput =
data.getParcelableExtra(NfcOperationActivity.RESULT_DATA);
cryptoOperation(cryptoInput);
return;
}
break;
}
default: {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
public boolean handlePendingMessage(Message message) {
if (message.arg1 == ServiceProgressHandler.MessageStatus.OKAY.ordinal()) {
Bundle data = message.getData();
OperationResult result = data.getParcelable(OperationResult.EXTRA_RESULT);
if (result == null || !(result instanceof InputPendingResult)) {
return false;
}
InputPendingResult pendingResult = (InputPendingResult) result;
if (pendingResult.isPending()) {
RequiredInputParcel requiredInput = pendingResult.getRequiredInputParcel();
initiateInputActivity(requiredInput);
return true;
}
}
return false;
}
protected void cryptoOperation() {
cryptoOperation(new CryptoInputParcel());
}
protected abstract void cryptoOperation(CryptoInputParcel cryptoInput);
protected void onCryptoOperationCancelled() {
// Nothing to do here, in most cases
}
}
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