578 lines
22 KiB
Java
578 lines
22 KiB
Java
/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui;
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import android.annotation.TargetApi;
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import android.support.v7.app.AlertDialog;
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import android.app.PendingIntent;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.nfc.FormatException;
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import android.nfc.NdefMessage;
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import android.nfc.NdefRecord;
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import android.nfc.NfcAdapter;
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import android.nfc.Tag;
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import android.nfc.tech.Ndef;
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import android.os.Build;
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import android.os.Bundle;
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import android.provider.Settings;
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import android.support.v4.app.Fragment;
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import android.support.v4.app.FragmentActivity;
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import android.support.v4.app.FragmentTransaction;
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import android.text.TextUtils;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.EditText;
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import android.widget.TextView;
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import android.widget.Toast;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.util.Log;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.security.SecureRandom;
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import java.util.Arrays;
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import java.util.List;
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public class PassphraseWizardActivity extends FragmentActivity {
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//public class PassphraseWizardActivity extends FragmentActivity implements LockPatternView.OnPatternListener {
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//create or authenticate
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public String selectedAction;
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//for lockpattern
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public static char[] pattern;
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private static String passphrase = "";
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//nfc string
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private static byte[] output = new byte[8];
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public static final String CREATE_METHOD = "create";
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public static final String AUTHENTICATION = "authenticate";
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NfcAdapter adapter;
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PendingIntent pendingIntent;
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IntentFilter writeTagFilters[];
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boolean writeMode;
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Tag myTag;
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boolean writeNFC = false;
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boolean readNFC = false;
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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 (getActionBar() != null) {
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getActionBar().setTitle(R.string.unlock_method);
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}
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selectedAction = getIntent().getAction();
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if (savedInstanceState == null) {
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SelectMethods selectMethods = new SelectMethods();
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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transaction.add(R.id.fragmentContainer, selectMethods).commit();
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}
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setContentView(R.layout.passphrase_wizard);
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adapter = NfcAdapter.getDefaultAdapter(this);
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if (adapter != null) {
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pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, PassphraseWizardActivity.class).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
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IntentFilter tagDetected = new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED);
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tagDetected.addCategory(Intent.CATEGORY_DEFAULT);
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writeTagFilters = new IntentFilter[]{tagDetected};
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}
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}
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public void noPassphrase(View view) {
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passphrase = "";
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Toast.makeText(this, R.string.no_passphrase_set, Toast.LENGTH_SHORT).show();
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this.finish();
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}
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public void passphrase(View view) {
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Passphrase passphrase = new Passphrase();
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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transaction.replace(R.id.fragmentContainer, passphrase).addToBackStack(null).commit();
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}
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public void startLockpattern(View view) {
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if (getActionBar() != null) {
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getActionBar().setTitle(R.string.draw_lockpattern);
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}
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// LockPatternFragmentOld lpf = LockPatternFragmentOld.newInstance(selectedAction);
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// LockPatternFragment lpf = LockPatternFragment.newInstance("asd");
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// FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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// transaction.replace(R.id.fragmentContainer, lpf).addToBackStack(null).commit();
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}
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public void cancel(View view) {
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this.finish();
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}
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public void savePassphrase(View view) {
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EditText passphrase = (EditText) findViewById(R.id.passphrase);
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passphrase.setError(null);
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String pw = passphrase.getText().toString();
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//check and save passphrase
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if (selectedAction.equals(CREATE_METHOD)) {
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EditText passphraseAgain = (EditText) findViewById(R.id.passphraseAgain);
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passphraseAgain.setError(null);
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String pwAgain = passphraseAgain.getText().toString();
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if (!TextUtils.isEmpty(pw)) {
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if (!TextUtils.isEmpty(pwAgain)) {
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if (pw.equals(pwAgain)) {
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PassphraseWizardActivity.passphrase = pw;
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Toast.makeText(this, getString(R.string.passphrase_saved), Toast.LENGTH_SHORT).show();
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this.finish();
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} else {
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passphrase.setError(getString(R.string.passphrase_invalid));
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passphrase.requestFocus();
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}
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} else {
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passphraseAgain.setError(getString(R.string.missing_passphrase));
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passphraseAgain.requestFocus();
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}
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} else {
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passphrase.setError(getString(R.string.missing_passphrase));
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passphrase.requestFocus();
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}
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}
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//check for right passphrase
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if (selectedAction.equals(AUTHENTICATION)) {
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if (pw.equals(PassphraseWizardActivity.passphrase)) {
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Toast.makeText(this, getString(R.string.unlocked), Toast.LENGTH_SHORT).show();
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this.finish();
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} else {
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passphrase.setError(getString(R.string.passphrase_invalid));
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passphrase.requestFocus();
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}
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}
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}
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public void NFC(View view) {
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if (adapter != null) {
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if (getActionBar() != null) {
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getActionBar().setTitle(R.string.nfc_title);
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}
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NFCFragment nfc = new NFCFragment();
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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transaction.replace(R.id.fragmentContainer, nfc).addToBackStack(null).commit();
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//if you want to create a new method or just authenticate
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if (CREATE_METHOD.equals(selectedAction)) {
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writeNFC = true;
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} else if (AUTHENTICATION.equals(selectedAction)) {
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readNFC = true;
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}
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if (!adapter.isEnabled()) {
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showAlertDialog(getString(R.string.enable_nfc), true);
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}
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} else {
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showAlertDialog(getString(R.string.no_nfc_support), false);
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}
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}
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@Override
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protected void onNewIntent(Intent intent) {
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if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) {
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myTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
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if (writeNFC && CREATE_METHOD.equals(selectedAction)) {
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//write new password on NFC tag
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try {
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if (myTag != null) {
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write(myTag);
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writeNFC = false; //just write once
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Toast.makeText(this, R.string.nfc_write_succesful, Toast.LENGTH_SHORT).show();
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//advance to lockpattern
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// LockPatternFragmentOld lpf = LockPatternFragmentOld.newInstance(selectedAction);
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// FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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// transaction.replace(R.id.fragmentContainer, lpf).addToBackStack(null).commit();
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}
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} catch (IOException | FormatException e) {
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Log.e(Constants.TAG, "Failed to write on NFC tag", e);
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}
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} else if (readNFC && AUTHENTICATION.equals(selectedAction)) {
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//read pw from NFC tag
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try {
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if (myTag != null) {
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//if tag detected, read tag
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String pwtag = read(myTag);
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if (output != null && pwtag.equals(output.toString())) {
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//passwort matches, go to next view
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Toast.makeText(this, R.string.passphrases_match + "!", Toast.LENGTH_SHORT).show();
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// LockPatternFragmentOld lpf = LockPatternFragmentOld.newInstance(selectedAction);
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// FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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// transaction.replace(R.id.fragmentContainer, lpf).addToBackStack(null).commit();
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readNFC = false; //just once
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} else {
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//passwort doesnt match
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TextView nfc = (TextView) findViewById(R.id.nfcText);
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nfc.setText(R.string.nfc_wrong_tag);
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}
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}
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} catch (IOException | FormatException e) {
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Log.e(Constants.TAG, "Failed to read NFC tag", e);
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}
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}
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}
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}
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private void write(Tag tag) throws IOException, FormatException {
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//generate new random key and write them on the tag
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SecureRandom sr = new SecureRandom();
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sr.nextBytes(output);
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NdefRecord[] records = {createRecord(output.toString())};
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NdefMessage message = new NdefMessage(records);
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Ndef ndef = Ndef.get(tag);
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ndef.connect();
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ndef.writeNdefMessage(message);
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ndef.close();
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}
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private String read(Tag tag) throws IOException, FormatException {
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//read string from tag
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String password = null;
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Ndef ndef = Ndef.get(tag);
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ndef.connect();
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NdefMessage ndefMessage = ndef.getCachedNdefMessage();
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NdefRecord[] records = ndefMessage.getRecords();
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for (NdefRecord ndefRecord : records) {
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if (ndefRecord.getTnf() == NdefRecord.TNF_WELL_KNOWN && Arrays.equals(ndefRecord.getType(), NdefRecord.RTD_TEXT)) {
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try {
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password = readText(ndefRecord);
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} catch (UnsupportedEncodingException e) {
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Log.e(Constants.TAG, "Failed to read password from tag", e);
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}
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}
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}
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ndef.close();
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return password;
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}
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private String readText(NdefRecord record) throws UnsupportedEncodingException {
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//low-level method for reading nfc
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byte[] payload = record.getPayload();
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String textEncoding = ((payload[0] & 128) == 0) ? "UTF-8" : "UTF-16";
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int languageCodeLength = payload[0] & 0063;
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return new String(payload, languageCodeLength + 1, payload.length - languageCodeLength - 1, textEncoding);
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}
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private NdefRecord createRecord(String text) throws UnsupportedEncodingException {
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//low-level method for writing nfc
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String lang = "en";
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byte[] textBytes = text.getBytes();
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byte[] langBytes = lang.getBytes("US-ASCII");
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int langLength = langBytes.length;
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int textLength = textBytes.length;
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byte[] payload = new byte[1 + langLength + textLength];
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// set status byte (see NDEF spec for actual bits)
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payload[0] = (byte) langLength;
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// copy langbytes and textbytes into payload
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System.arraycopy(langBytes, 0, payload, 1, langLength);
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System.arraycopy(textBytes, 0, payload, 1 + langLength, textLength);
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return new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], payload);
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}
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public void showAlertDialog(String message, boolean nfc) {
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//This method shows an AlertDialog
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AlertDialog.Builder alert = new AlertDialog.Builder(this);
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alert.setTitle("Information").setMessage(message).setPositiveButton("Ok",
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new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialogInterface, int i) {
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}
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}
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);
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if (nfc) {
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alert.setNeutralButton(R.string.nfc_settings,
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new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialogInterface, int i) {
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startActivity(new Intent(Settings.ACTION_NFC_SETTINGS));
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}
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}
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);
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}
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alert.show();
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}
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@Override
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public void onPause() {
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//pause this app and free nfc intent
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super.onPause();
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if (adapter != null) {
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WriteModeOff();
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}
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}
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@Override
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public void onResume() {
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//resume this app and get nfc intent
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super.onResume();
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if (adapter != null) {
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WriteModeOn();
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}
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}
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private void WriteModeOn() {
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//enable nfc for this view
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writeMode = true;
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adapter.enableForegroundDispatch(this, pendingIntent, writeTagFilters, null);
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}
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private void WriteModeOff() {
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//disable nfc for this view
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writeMode = false;
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adapter.disableForegroundDispatch(this);
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}
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public static class SelectMethods extends Fragment {
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// private OnFragmentInteractionListener mListener;
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/**
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* Use this factory method to create a new instance of
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* this fragment using the provided parameters.
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*/
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public SelectMethods() {
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}
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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}
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@Override
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public void onResume() {
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super.onResume();
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if (getActivity().getActionBar() != null) {
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getActivity().getActionBar().setTitle(R.string.unlock_method);
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}
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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// Inflate the layout for this fragment
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return inflater.inflate(R.layout.passphrase_wizard_fragment_select_methods, container, false);
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}
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// @Override
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// public void onAttach(Activity activity) {
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// super.onAttach(activity);
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// try {
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// mListener = (OnFragmentInteractionListener) activity;
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// } catch (ClassCastException e) {
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// throw new ClassCastException(activity.toString()
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// + " must implement OnFragmentInteractionListener");
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// }
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// }
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//
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// @Override
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// public void onDetach() {
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// super.onDetach();
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// mListener = null;
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// }
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/**
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* This interface must be implemented by activities that contain this
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* fragment to allow an interaction in this fragment to be communicated
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* to the activity and potentially other fragments contained in that
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* activity.
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* <p/>
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* See the Android Training lesson <a href=
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* "http://developer.android.com/training/basics/fragments/communicating.html"
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* >Communicating with Other Fragments</a> for more information.
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*/
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// public static interface OnFragmentInteractionListener {
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// public void onFragmentInteraction(Uri uri);
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// }
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}
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// /**
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// * A simple {@link android.support.v4.app.Fragment} subclass.
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// * Activities that contain this fragment must implement the
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// * {@link com.haibison.android.lockpattern.Passphrase.OnFragmentInteractionListener} interface
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// * to handle interaction events.
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// */
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public static class Passphrase extends Fragment {
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// private OnFragmentInteractionListener mListener;
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public Passphrase() {
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}
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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// Inflate the layout for this fragment
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View view = inflater.inflate(R.layout.passphrase_wizard_fragment_passphrase, container, false);
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EditText passphraseAgain = (EditText) view.findViewById(R.id.passphraseAgain);
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TextView passphraseText = (TextView) view.findViewById(R.id.passphraseText);
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TextView passphraseTextAgain = (TextView) view.findViewById(R.id.passphraseTextAgain);
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String selectedAction = getActivity().getIntent().getAction();
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if (selectedAction.equals(AUTHENTICATION)) {
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passphraseAgain.setVisibility(View.GONE);
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passphraseTextAgain.setVisibility(View.GONE);
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passphraseText.setText(R.string.enter_passphrase);
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// getActivity().getActionBar().setTitle(R.string.enter_passphrase);
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} else if (selectedAction.equals(CREATE_METHOD)) {
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passphraseAgain.setVisibility(View.VISIBLE);
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passphraseTextAgain.setVisibility(View.VISIBLE);
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passphraseText.setText(R.string.passphrase);
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// getActivity().getActionBar().setTitle(R.string.set_passphrase);
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}
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return view;
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}
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// @Override
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// public void onAttach(Activity activity) {
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// super.onAttach(activity);
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// try {
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// mListener = (OnFragmentInteractionListener) activity;
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// } catch (ClassCastException e) {
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// throw new ClassCastException(activity.toString()
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// + " must implement OnFragmentInteractionListener");
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// }
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// }
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//
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// @Override
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// public void onDetach() {
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// super.onDetach();
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// mListener = null;
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// }
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// /**
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// * This interface must be implemented by activities that contain this
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// * fragment to allow an interaction in this fragment to be communicated
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// * to the activity and potentially other fragments contained in that
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// * activity.
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// * <p/>
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// * See the Android Training lesson <a href=
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// * "http://developer.android.com/training/basics/fragments/communicating.html"
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// * >Communicating with Other Fragments</a> for more information.
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// */
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// public interface OnFragmentInteractionListener {
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// public void onFragmentInteraction(Uri uri);
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// }
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}
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/**
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* A simple {@link android.support.v4.app.Fragment} subclass.
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* Activities that contain this fragment must implement the
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* interface
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* to handle interaction events.
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* Use the method to
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* create an instance of this fragment.
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*/
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public static class NFCFragment extends Fragment {
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// TODO: Rename parameter arguments, choose names that match
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// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
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private static final String ARG_PARAM1 = "param1";
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private static final String ARG_PARAM2 = "param2";
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// TODO: Rename and change types of parameters
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private String mParam1;
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private String mParam2;
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// private OnFragmentInteractionListener mListener;
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/**
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* Use this factory method to create a new instance of
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* this fragment using the provided parameters.
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*
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* @param param1 Parameter 1.
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* @param param2 Parameter 2.
|
|
* @return A new instance of fragment SelectMethods.
|
|
*/
|
|
// TODO: Rename and change types and number of parameters
|
|
public static NFCFragment newInstance(String param1, String param2) {
|
|
NFCFragment fragment = new NFCFragment();
|
|
Bundle args = new Bundle();
|
|
args.putString(ARG_PARAM1, param1);
|
|
args.putString(ARG_PARAM2, param2);
|
|
fragment.setArguments(args);
|
|
return fragment;
|
|
}
|
|
|
|
public NFCFragment() {
|
|
// Required empty public constructor
|
|
}
|
|
|
|
@Override
|
|
public void onCreate(Bundle savedInstanceState) {
|
|
super.onCreate(savedInstanceState);
|
|
if (getArguments() != null) {
|
|
mParam1 = getArguments().getString(ARG_PARAM1);
|
|
mParam2 = getArguments().getString(ARG_PARAM2);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public View onCreateView(LayoutInflater inflater, ViewGroup container,
|
|
Bundle savedInstanceState) {
|
|
// Inflate the layout for this fragment
|
|
return inflater.inflate(R.layout.passphrase_wizard_fragment_nfc, container, false);
|
|
}
|
|
|
|
// // TODO: Rename method, update argument and hook method into UI event
|
|
// public void onButtonPressed(Uri uri) {
|
|
// if (mListener != null) {
|
|
// mListener.onFragmentInteraction(uri);
|
|
// }
|
|
// }
|
|
|
|
// @Override
|
|
// public void onAttach(Activity activity) {
|
|
// super.onAttach(activity);
|
|
// try {
|
|
// mListener = (OnFragmentInteractionListener) activity;
|
|
// } catch (ClassCastException e) {
|
|
// throw new ClassCastException(activity.toString()
|
|
// + " must implement OnFragmentInteractionListener");
|
|
// }
|
|
// }
|
|
|
|
|
|
// @Override
|
|
// public void onDetach() {
|
|
// super.onDetach();
|
|
// mListener = null;
|
|
// }
|
|
}
|
|
|
|
}
|