session-android/src/org/thoughtcrime/securesms/PassphraseChangeActivity.java
2016-03-24 14:14:41 -07:00

176 lines
5.7 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 android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Editable;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import org.thoughtcrime.securesms.crypto.InvalidPassphraseException;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.crypto.MasterSecretUtil;
import org.thoughtcrime.securesms.util.DynamicLanguage;
import org.thoughtcrime.securesms.util.DynamicTheme;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
/**
* Activity for changing a user's local encryption passphrase.
*
* @author Moxie Marlinspike
*/
public class PassphraseChangeActivity extends PassphraseActivity {
private DynamicTheme dynamicTheme = new DynamicTheme();
private DynamicLanguage dynamicLanguage = new DynamicLanguage();
private EditText originalPassphrase;
private EditText newPassphrase;
private EditText repeatPassphrase;
private Button okButton;
private Button cancelButton;
@Override
public void onCreate(Bundle savedInstanceState) {
dynamicTheme.onCreate(this);
dynamicLanguage.onCreate(this);
super.onCreate(savedInstanceState);
setContentView(R.layout.change_passphrase_activity);
initializeResources();
}
@Override
public void onResume() {
super.onResume();
dynamicTheme.onResume(this);
dynamicLanguage.onResume(this);
}
private void initializeResources() {
this.originalPassphrase = (EditText) findViewById(R.id.old_passphrase );
this.newPassphrase = (EditText) findViewById(R.id.new_passphrase );
this.repeatPassphrase = (EditText) findViewById(R.id.repeat_passphrase );
this.okButton = (Button ) findViewById(R.id.ok_button );
this.cancelButton = (Button ) findViewById(R.id.cancel_button );
this.okButton.setOnClickListener(new OkButtonClickListener());
this.cancelButton.setOnClickListener(new CancelButtonClickListener());
if (TextSecurePreferences.isPasswordDisabled(this)) {
this.originalPassphrase.setVisibility(View.GONE);
} else {
this.originalPassphrase.setVisibility(View.VISIBLE);
}
}
private void verifyAndSavePassphrases() {
Editable originalText = this.originalPassphrase.getText();
Editable newText = this.newPassphrase.getText();
Editable repeatText = this.repeatPassphrase.getText();
String original = (originalText == null ? "" : originalText.toString());
String passphrase = (newText == null ? "" : newText.toString());
String passphraseRepeat = (repeatText == null ? "" : repeatText.toString());
if (TextSecurePreferences.isPasswordDisabled(this)) {
original = MasterSecretUtil.UNENCRYPTED_PASSPHRASE;
}
if (!passphrase.equals(passphraseRepeat)) {
this.newPassphrase.setText("");
this.repeatPassphrase.setText("");
this.newPassphrase.setError(getString(R.string.PassphraseChangeActivity_passphrases_dont_match_exclamation));
this.newPassphrase.requestFocus();
} else if (passphrase.equals("")) {
this.newPassphrase.setError(getString(R.string.PassphraseChangeActivity_enter_new_passphrase_exclamation));
this.newPassphrase.requestFocus();
} else {
new ChangePassphraseTask(this).execute(original, passphrase);
}
}
private class CancelButtonClickListener implements OnClickListener {
public void onClick(View v) {
finish();
}
}
private class OkButtonClickListener implements OnClickListener {
public void onClick(View v) {
verifyAndSavePassphrases();
}
}
private class ChangePassphraseTask extends AsyncTask<String, Void, MasterSecret> {
private final Context context;
public ChangePassphraseTask(Context context) {
this.context = context;
}
@Override
protected void onPreExecute() {
okButton.setEnabled(false);
}
@Override
protected MasterSecret doInBackground(String... params) {
try {
MasterSecret masterSecret = MasterSecretUtil.changeMasterSecretPassphrase(context, params[0], params[1]);
TextSecurePreferences.setPasswordDisabled(context, false);
return masterSecret;
} catch (InvalidPassphraseException e) {
Log.w(PassphraseChangeActivity.class.getSimpleName(), e);
return null;
}
}
@Override
protected void onPostExecute(MasterSecret masterSecret) {
okButton.setEnabled(true);
if (masterSecret != null) {
setMasterSecret(masterSecret);
} else {
originalPassphrase.setText("");
originalPassphrase.setError(getString(R.string.PassphraseChangeActivity_incorrect_old_passphrase_exclamation));
originalPassphrase.requestFocus();
}
}
}
@Override
protected void cleanup() {
this.originalPassphrase = null;
this.newPassphrase = null;
this.repeatPassphrase = null;
System.gc();
}
}