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/*
* Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.thialfihar.android.apg;
import org.bouncycastle2.jce.provider.BouncyCastleProvider;
import org.bouncycastle2.openpgp.PGPException;
import org.bouncycastle2.openpgp.PGPSecretKey;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class AskForSecretKeyPassPhrase {
public static interface PassPhraseCallbackInterface {
void passPhraseCallback(String passPhrase);
}
public static Dialog createDialog(Activity context, long secretKeyId,
PassPhraseCallbackInterface callback) {
AlertDialog.Builder alert = new AlertDialog.Builder(context);
alert.setTitle(R.string.title_authentification);
final PGPSecretKey secretKey;
if (secretKeyId == 0) {
secretKey = null;
alert.setMessage("Pass phrase for symmetric encryption");
} else {
secretKey = Apg.getMasterKey(Apg.findSecretKeyRing(secretKeyId));
if (secretKey == null) {
return null;
}
String userId = Apg.getMainUserIdSafe(context, secretKey);
alert.setMessage("Pass phrase for " + userId);
}
LayoutInflater inflater =
(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.pass_phrase, null);
final EditText input = (EditText) view.findViewById(R.id.pass_phrase);
final EditText inputNotUsed = (EditText) view.findViewById(R.id.pass_phrase_again);
inputNotUsed.setVisibility(View.GONE);
alert.setView(view);
final PassPhraseCallbackInterface cb = callback;
final Activity activity = context;
alert.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
activity.removeDialog(Id.dialog.pass_phrase);
String passPhrase = "" + input.getText();
if (secretKey != null) {
try {
secretKey.extractPrivateKey(passPhrase.toCharArray(),
new BouncyCastleProvider());
} catch (PGPException e) {
Toast.makeText(activity,
R.string.wrong_pass_phrase,
Toast.LENGTH_SHORT).show();
return;
}
}
cb.passPhraseCallback(passPhrase);
}
});
alert.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
activity.removeDialog(Id.dialog.pass_phrase);
}
});
return alert.create();
}
}
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