session-android/src/org/thoughtcrime/securesms/KeyScanningActivity.java
2011-12-20 10:20:44 -08:00

100 lines
3.4 KiB
Java

/**
* Copyright (C) 2011 Whisper Systems
*
* 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.thoughtcrime.securesms;
import org.thoughtcrime.securesms.crypto.SerializableKey;
import org.thoughtcrime.securesms.util.Base64;
import org.thoughtcrime.securesms.util.Dialogs;
import android.app.Activity;
import android.content.Intent;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
/**
* Activity for initiating/receiving key QR code scans.
*
* @author Moxie Marlinspike
*/
public abstract class KeyScanningActivity extends Activity {
private static final int MENU_ITEM_SCAN = 1;
private static final int MENU_ITEM_GET_SCANNED = 2;
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
menu.add(0, MENU_ITEM_SCAN, Menu.NONE, getScanString());
menu.add(0, MENU_ITEM_GET_SCANNED, Menu.NONE, getDisplayString());
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch(item.getItemId()) {
case MENU_ITEM_SCAN: initiateScan(); return true;
case MENU_ITEM_GET_SCANNED: initiateDisplay(); return true;
}
return false;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
if ((scanResult != null) && (scanResult.getContents() != null)) {
String data = scanResult.getContents();
if (data.equals(Base64.encodeBytes(getIdentityKeyToCompare().serialize()))) {
Dialogs.displayAlert(this, getVerifiedTitle(), getVerifiedMessage(), android.R.drawable.ic_dialog_info);
} else {
Dialogs.displayAlert(this, getNotVerifiedTitle(), getNotVerifiedMessage(), android.R.drawable.ic_dialog_alert);
}
} else {
Toast.makeText(this, "No scanned key found!", Toast.LENGTH_LONG).show();
}
}
protected void initiateScan() {
IntentIntegrator.initiateScan(this);
}
protected void initiateDisplay() {
IntentIntegrator.shareText(this, Base64.encodeBytes(getIdentityKeyToDisplay().serialize()));
}
protected abstract String getScanString();
protected abstract String getDisplayString();
protected abstract String getNotVerifiedTitle();
protected abstract String getNotVerifiedMessage();
protected abstract SerializableKey getIdentityKeyToCompare();
protected abstract SerializableKey getIdentityKeyToDisplay();
protected abstract String getVerifiedTitle();
protected abstract String getVerifiedMessage();
}