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/*
* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.support.v4.app.FragmentActivity;
import android.widget.Toast;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.api.OpenKeychainIntents;
import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.operations.results.SingletonResult;
import org.sufficientlysecure.keychain.service.KeychainIntentService;
import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
import org.sufficientlysecure.keychain.util.IntentIntegratorSupportV4;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Preferences;
import java.util.ArrayList;
import java.util.Locale;
/**
* Proxy activity (just a transparent content view) to scan QR Codes using the Barcode Scanner app
*/
public class QrCodeScanActivity extends FragmentActivity {
public static final String ACTION_QR_CODE_API = OpenKeychainIntents.IMPORT_KEY_FROM_QR_CODE;
public static final String ACTION_SCAN_WITH_RESULT = Constants.INTENT_PREFIX + "SCAN_QR_CODE_WITH_RESULT";
boolean returnResult;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// this activity itself has no content view (see manifest)
handleActions(getIntent());
}
protected void handleActions(Intent intent) {
String action = intent.getAction();
Uri dataUri = intent.getData();
String scheme = intent.getScheme();
if (scheme != null && scheme.toLowerCase(Locale.ENGLISH).equals(Constants.FINGERPRINT_SCHEME)) {
// Scanning a fingerprint directly with Barcode Scanner, thus we already have scanned
returnResult = false;
startCertify(dataUri);
} else if (ACTION_SCAN_WITH_RESULT.equals(action)) {
// scan using xzing's Barcode Scanner and return result parcel in OpenKeychain
returnResult = true;
IntentIntegrator integrator = new IntentIntegrator(this);
integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES)
.setPrompt(getString(R.string.import_qr_code_text))
.setResultDisplayDuration(0)
.initiateScan();
} else if (ACTION_QR_CODE_API.equals(action)) {
// scan using xzing's Barcode Scanner from outside OpenKeychain
returnResult = false;
new IntentIntegrator(this).initiateScan();
} else {
Log.e(Constants.TAG, "No valid scheme or action given!");
finish();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == IntentIntegratorSupportV4.REQUEST_CODE) {
IntentResult scanResult = IntentIntegratorSupportV4.parseActivityResult(requestCode,
resultCode, data);
if (scanResult != null && scanResult.getFormatName() != null) {
String scannedContent = scanResult.getContents();
Log.d(Constants.TAG, "scannedContent: " + scannedContent);
startCertify(Uri.parse(scanResult.getContents()));
} else {
Log.e(Constants.TAG, "scanResult or formatName null! Should not happen!");
finish();
}
return;
}
// if a result has been returned, return it down to other activity
if (data != null && data.hasExtra(OperationResult.EXTRA_RESULT)) {
returnResult(data);
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
public void returnResult(Intent data) {
if (returnResult) {
setResult(RESULT_OK, data);
finish();
} else {
// display last log message but as Toast for calls from outside OpenKeychain
OperationResult result = data.getParcelableExtra(OperationResult.EXTRA_RESULT);
String str = getString(result.getLog().getLast().mType.getMsgId());
Toast.makeText(this, str, Toast.LENGTH_LONG).show();
finish();
}
}
public void startCertify(Uri dataUri) {
// example: openpgp4fpr:73EE2314F65FA92EC2390D3A718C070100012282
if (dataUri.getScheme().equals(Constants.FINGERPRINT_SCHEME)) {
String fingerprint = dataUri.getEncodedSchemeSpecificPart().toLowerCase(Locale.ENGLISH);
importKeys(fingerprint);
} else {
SingletonResult result = new SingletonResult(
SingletonResult.RESULT_ERROR, OperationResult.LogType.MSG_WRONG_QR_CODE);
Intent intent = new Intent();
intent.putExtra(SingletonResult.EXTRA_RESULT, result);
returnResult(intent);
}
}
public void importKeys(String fingerprint) {
// Message is received after importing is done in KeychainIntentService
KeychainIntentServiceHandler serviceHandler = new KeychainIntentServiceHandler(
this,
getString(R.string.progress_importing),
ProgressDialog.STYLE_HORIZONTAL,
true) {
public void handleMessage(Message message) {
// handle messages by standard KeychainIntentServiceHandler first
super.handleMessage(message);
if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
// get returned data bundle
Bundle returnData = message.getData();
if (returnData == null) {
finish();
return;
}
final ImportKeyResult result =
returnData.getParcelable(OperationResult.EXTRA_RESULT);
if (result == null) {
Log.e(Constants.TAG, "result == null");
finish();
return;
}
if (!result.success()) {
// only return if no success...
Intent data = new Intent();
data.putExtras(returnData);
returnResult(data);
return;
}
Intent certifyIntent = new Intent(QrCodeScanActivity.this, CertifyKeyActivity.class);
certifyIntent.putExtra(CertifyKeyActivity.EXTRA_RESULT, result);
certifyIntent.putExtra(CertifyKeyActivity.EXTRA_KEY_IDS, result.getImportedMasterKeyIds());
startActivityForResult(certifyIntent, 0);
}
}
};
// search config
Preferences prefs = Preferences.getPreferences(this);
Preferences.CloudSearchPrefs cloudPrefs = new Preferences.CloudSearchPrefs(true, true, prefs.getPreferredKeyserver());
// Send all information needed to service to query keys in other thread
Intent intent = new Intent(this, KeychainIntentService.class);
intent.setAction(KeychainIntentService.ACTION_IMPORT_KEYRING);
// fill values for this action
Bundle data = new Bundle();
data.putString(KeychainIntentService.IMPORT_KEY_SERVER, cloudPrefs.keyserver);
ParcelableKeyRing keyEntry = new ParcelableKeyRing(fingerprint, null, null);
ArrayList<ParcelableKeyRing> selectedEntries = new ArrayList<ParcelableKeyRing>();
selectedEntries.add(keyEntry);
data.putParcelableArrayList(KeychainIntentService.IMPORT_KEY_LIST, selectedEntries);
intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
// Create a new Messenger for the communication back
Messenger messenger = new Messenger(serviceHandler);
intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
// show progress dialog
serviceHandler.showProgressDialog(this);
// start service with intent
startService(intent);
}
}
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