468 lines
17 KiB
Java
468 lines
17 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 java.io.File;
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import java.util.Timer;
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import java.util.TimerTask;
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import org.bouncycastle2.bcpg.CompressionAlgorithmTags;
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import org.bouncycastle2.bcpg.HashAlgorithmTags;
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import org.bouncycastle2.openpgp.PGPEncryptedData;
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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.app.ProgressDialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.view.LayoutInflater;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.TextView;
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import android.widget.Toast;
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public class BaseActivity extends Activity
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implements Runnable, ProgressDialogUpdater,
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AskForSecretKeyPassPhrase.PassPhraseCallbackInterface {
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private ProgressDialog mProgressDialog = null;
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private Thread mRunningThread = null;
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private long mSecretKeyId = 0;
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private String mDeleteFile = null;
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protected static SharedPreferences mPreferences = null;
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private static Timer mCacheTimer = new Timer();
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private Handler mHandler = new Handler() {
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@Override
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public void handleMessage(Message msg) {
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handlerCallback(msg);
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}
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};
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (mPreferences == null) {
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mPreferences = getPreferences(MODE_PRIVATE);
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}
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Apg.initialize(this);
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if (mCacheTimer == null) {
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setPassPhraseCacheTimer();
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}
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}
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private void setPassPhraseCacheTimer() {
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if (mCacheTimer != null) {
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mCacheTimer.cancel();
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mCacheTimer = null;
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}
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int ttl = getPassPhraseCacheTtl();
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if (ttl == 0) {
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// no timer needed
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return;
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}
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// check every ttl/2 seconds, which shouldn't be heavy on the device (even if ttl = 15),
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// and makes sure the longest a pass phrase survives int the cache is 1.5 * ttl
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mCacheTimer = new Timer();
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mCacheTimer.scheduleAtFixedRate(new TimerTask() {
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public void run() {
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Apg.cleanUpCache(BaseActivity.this.getPassPhraseCacheTtl());
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}
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}, 0, ttl * 1000 / 2);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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menu.add(0, Id.menu.option.preferences, 0, R.string.menu_preferences)
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.setIcon(android.R.drawable.ic_menu_preferences);
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menu.add(0, Id.menu.option.about, 1, R.string.menu_about)
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.setIcon(android.R.drawable.ic_menu_info_details);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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switch (item.getItemId()) {
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case Id.menu.option.about: {
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showDialog(Id.dialog.about);
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return true;
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}
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case Id.menu.option.preferences: {
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startActivity(new Intent(this, PreferencesActivity.class));
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return true;
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}
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default: {
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break;
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}
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}
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return false;
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}
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@Override
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protected Dialog onCreateDialog(int id) {
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// in case it is a progress dialog
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mProgressDialog = new ProgressDialog(this);
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mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
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mProgressDialog.setCancelable(false);
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switch (id) {
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case Id.dialog.encrypting: {
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mProgressDialog.setMessage(this.getString(R.string.progress_initializing));
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return mProgressDialog;
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}
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case Id.dialog.decrypting: {
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mProgressDialog.setMessage(this.getString(R.string.progress_initializing));
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return mProgressDialog;
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}
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case Id.dialog.saving: {
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mProgressDialog.setMessage(this.getString(R.string.progress_saving));
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return mProgressDialog;
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}
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case Id.dialog.importing: {
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mProgressDialog.setMessage(this.getString(R.string.progress_importing));
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return mProgressDialog;
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}
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case Id.dialog.exporting: {
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mProgressDialog.setMessage(this.getString(R.string.progress_exporting));
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return mProgressDialog;
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}
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default: {
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break;
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}
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}
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mProgressDialog = null;
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switch (id) {
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case Id.dialog.about: {
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AlertDialog.Builder alert = new AlertDialog.Builder(this);
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alert.setTitle("About " + Apg.FULL_VERSION);
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LayoutInflater inflater =
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(LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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View layout = inflater.inflate(R.layout.info, null);
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TextView message = (TextView) layout.findViewById(R.id.message);
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message.setText("This is an attempt to bring OpenPGP to Android. " +
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"It is far from complete, but more features are planned (see website).\n\n" +
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"Feel free to send bug reports, suggestions, feature requests, feedback, " +
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"photographs.\n\n" +
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"mail: thi@thialfihar.org\n" +
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"site: http://apg.thialfihar.org\n\n" +
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"This software is provided \"as is\", without warranty of any kind.");
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alert.setView(layout);
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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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BaseActivity.this.removeDialog(Id.dialog.about);
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}
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});
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return alert.create();
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}
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case Id.dialog.pass_phrase: {
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return AskForSecretKeyPassPhrase.createDialog(this, getSecretKeyId(), this);
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}
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case Id.dialog.pass_phrases_do_not_match: {
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AlertDialog.Builder alert = new AlertDialog.Builder(this);
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alert.setIcon(android.R.drawable.ic_dialog_alert);
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alert.setTitle(R.string.error);
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alert.setMessage(R.string.passPhrasesDoNotMatch);
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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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removeDialog(Id.dialog.pass_phrases_do_not_match);
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}
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});
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alert.setCancelable(false);
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return alert.create();
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}
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case Id.dialog.no_pass_phrase: {
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AlertDialog.Builder alert = new AlertDialog.Builder(this);
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alert.setIcon(android.R.drawable.ic_dialog_alert);
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alert.setTitle(R.string.error);
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alert.setMessage(R.string.passPhraseMustNotBeEmpty);
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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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removeDialog(Id.dialog.no_pass_phrase);
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}
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});
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alert.setCancelable(false);
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return alert.create();
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}
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case Id.dialog.delete_file: {
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AlertDialog.Builder alert = new AlertDialog.Builder(this);
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alert.setIcon(android.R.drawable.ic_dialog_alert);
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alert.setTitle(R.string.warning);
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alert.setMessage(this.getString(R.string.fileDeleteConfirmation, getDeleteFile()));
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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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removeDialog(Id.dialog.delete_file);
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File file = new File(getDeleteFile());
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String msg = "";
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if (file.delete()) {
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msg = BaseActivity.this.getString(
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R.string.fileDeleteSuccessful);
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} else {
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msg = BaseActivity.this.getString(
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R.string.errorMessage,
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BaseActivity.this.getString(
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R.string.error_fileDeleteFailed, file));
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}
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Toast.makeText(BaseActivity.this,
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msg, Toast.LENGTH_SHORT).show();
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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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removeDialog(Id.dialog.delete_file);
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}
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});
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alert.setCancelable(true);
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return alert.create();
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}
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default: {
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break;
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}
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}
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return super.onCreateDialog(id);
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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switch (requestCode) {
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case Id.request.secret_keys: {
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if (resultCode == RESULT_OK) {
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Bundle bundle = data.getExtras();
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setSecretKeyId(bundle.getLong("selectedKeyId"));
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} else {
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setSecretKeyId(Id.key.none);
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}
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break;
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}
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default: {
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break;
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}
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}
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super.onActivityResult(requestCode, resultCode, data);
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}
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public void setProgress(int resourceId, int progress, int max) {
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setProgress(getString(resourceId), progress, max);
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}
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public void setProgress(int progress, int max) {
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Message msg = new Message();
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Bundle data = new Bundle();
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data.putInt("type", Id.message.progress_update);
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data.putInt("progress", progress);
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data.putInt("max", max);
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msg.setData(data);
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mHandler.sendMessage(msg);
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}
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public void setProgress(String message, int progress, int max) {
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Message msg = new Message();
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Bundle data = new Bundle();
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data.putInt("type", Id.message.progress_update);
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data.putString("message", message);
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data.putInt("progress", progress);
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data.putInt("max", max);
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msg.setData(data);
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mHandler.sendMessage(msg);
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}
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public void handlerCallback(Message msg) {
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Bundle data = msg.getData();
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if (data == null) {
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return;
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}
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int type = data.getInt("type");
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switch (type) {
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case Id.message.progress_update: {
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String message = data.getString("message");
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if (mProgressDialog != null) {
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if (message != null) {
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mProgressDialog.setMessage(message);
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}
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mProgressDialog.setMax(data.getInt("max"));
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mProgressDialog.setProgress(data.getInt("progress"));
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}
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break;
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}
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case Id.message.import_done: // intentionall no break
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case Id.message.export_done: // intentionall no break
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case Id.message.done: {
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mProgressDialog = null;
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doneCallback(msg);
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break;
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}
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}
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}
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public void doneCallback(Message msg) {
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}
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public void passPhraseCallback(long keyId, String passPhrase) {
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Apg.setCachedPassPhrase(keyId, passPhrase);
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}
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public void sendMessage(Message msg) {
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mHandler.sendMessage(msg);
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}
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public void startThread() {
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mRunningThread = new Thread(this);
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mRunningThread.start();
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}
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public void run() {
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}
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public void setSecretKeyId(long id) {
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mSecretKeyId = id;
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}
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public long getSecretKeyId() {
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return mSecretKeyId;
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}
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public int getPassPhraseCacheTtl() {
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return mPreferences.getInt(Constants.pref.pass_phrase_cache_ttl, 300);
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}
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public void setPassPhraseCacheTtl(int value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putInt(Constants.pref.pass_phrase_cache_ttl, value);
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editor.commit();
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setPassPhraseCacheTimer();
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}
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public int getDefaultEncryptionAlgorithm() {
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return mPreferences.getInt(Constants.pref.default_encryption_algorithm,
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PGPEncryptedData.AES_256);
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}
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public void setDefaultEncryptionAlgorithm(int value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putInt(Constants.pref.default_encryption_algorithm, value);
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editor.commit();
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}
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public int getDefaultHashAlgorithm() {
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return mPreferences.getInt(Constants.pref.default_hash_algorithm,
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HashAlgorithmTags.SHA256);
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}
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public void setDefaultHashAlgorithm(int value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putInt(Constants.pref.default_hash_algorithm, value);
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editor.commit();
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}
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public int getDefaultMessageCompression() {
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return mPreferences.getInt(Constants.pref.default_message_compression,
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Id.choice.compression.zlib);
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}
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public void setDefaultMessageCompression(int value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putInt(Constants.pref.default_message_compression, value);
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editor.commit();
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}
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public int getDefaultFileCompression() {
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return mPreferences.getInt(Constants.pref.default_file_compression,
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Id.choice.compression.none);
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}
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public void setDefaultFileCompression(int value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putInt(Constants.pref.default_file_compression, value);
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editor.commit();
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}
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public boolean getDefaultAsciiArmour() {
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return mPreferences.getBoolean(Constants.pref.default_ascii_armour, false);
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}
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public void setDefaultAsciiArmour(boolean value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putBoolean(Constants.pref.default_ascii_armour, value);
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editor.commit();
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}
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public boolean hasSeenChangeLog() {
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return mPreferences.getBoolean(Constants.pref.has_seen_change_log, false);
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}
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public void setHasSeenChangeLog(boolean value) {
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SharedPreferences.Editor editor = mPreferences.edit();
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editor.putBoolean(Constants.pref.has_seen_change_log, value);
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editor.commit();
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}
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protected void setDeleteFile(String deleteFile) {
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mDeleteFile = deleteFile;
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}
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protected String getDeleteFile() {
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return mDeleteFile;
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}
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}
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