117 lines
5.3 KiB
Java
117 lines
5.3 KiB
Java
/*
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* Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.thialfihar.android.apg;
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import org.bouncycastle2.jce.provider.BouncyCastleProvider;
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import org.bouncycastle2.openpgp.PGPException;
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import org.bouncycastle2.openpgp.PGPSecretKey;
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.content.DialogInterface;
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import android.text.InputType;
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import android.text.method.PasswordTransformationMethod;
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import android.view.KeyEvent;
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import android.view.View;
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import android.view.View.OnKeyListener;
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import android.view.ViewGroup.LayoutParams;
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import android.widget.EditText;
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import android.widget.LinearLayout;
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import android.widget.Toast;
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public class AskForSecretKeyPassPhrase {
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public static interface PassPhraseCallbackInterface {
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void passPhraseCallback(String passPhrase);
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}
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public static Dialog createDialog(Activity context, long secretKeyId,
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PassPhraseCallbackInterface callback) {
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AlertDialog.Builder alert = new AlertDialog.Builder(context);
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final PGPSecretKey secretKey =
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Apg.getMasterKey(Apg.findSecretKeyRing(secretKeyId));
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if (secretKey == null) {
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return null;
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}
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String userId = Apg.getMainUserIdSafe(context, secretKey);
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alert.setTitle(R.string.title_authentification);
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alert.setMessage("Pass phrase for " + userId);
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final EditText input = new EditText(context);
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input.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
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input.setTransformationMethod(new PasswordTransformationMethod());
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input.setOnKeyListener(new OnKeyListener() {
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public boolean onKey(View v, int keyCode, KeyEvent event) {
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// If the event is a key-down event on the "enter" button
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if (event.getAction() == KeyEvent.ACTION_DOWN &&
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keyCode == KeyEvent.KEYCODE_ENTER) {
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try {
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((AlertDialog) v.getParent()).getButton(AlertDialog.BUTTON_POSITIVE)
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.performClick();
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} catch (ClassCastException e) {
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// don't do anything if we're not in that dialog
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}
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return true;
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}
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return false;
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}
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});
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// 5dip padding
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int padding = (int) (10 * context.getResources().getDisplayMetrics().densityDpi / 160);
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LinearLayout layout = new LinearLayout(context);
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layout.setPadding(padding, 0, padding, 0);
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layout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
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LayoutParams.WRAP_CONTENT));
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input.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
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LayoutParams.WRAP_CONTENT));
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layout.addView(input);
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alert.setView(layout);
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final PassPhraseCallbackInterface cb = callback;
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final Activity activity = context;
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alert.setPositiveButton(android.R.string.ok,
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new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int id) {
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activity.removeDialog(Id.dialog.pass_phrase);
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String passPhrase = "" + input.getText();
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try {
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secretKey.extractPrivateKey(passPhrase.toCharArray(),
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new BouncyCastleProvider());
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} catch (PGPException e) {
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Toast.makeText(activity,
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R.string.wrong_pass_phrase,
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Toast.LENGTH_SHORT).show();
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return;
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}
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cb.passPhraseCallback(passPhrase);
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}
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});
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alert.setNegativeButton(android.R.string.cancel,
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new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int id) {
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activity.removeDialog(Id.dialog.pass_phrase);
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}
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});
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return alert.create();
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}
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}
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