469 lines
17 KiB
Java
Executable File
469 lines
17 KiB
Java
Executable File
package de.vanitasvitae.enigmandroid;
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import android.app.Activity;
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import android.app.AlertDialog;
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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.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.res.Configuration;
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import android.net.Uri;
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import android.os.Bundle;
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import android.preference.PreferenceManager;
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import android.util.Log;
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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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import com.google.zxing.integration.android.IntentIntegrator;
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import com.google.zxing.integration.android.IntentResult;
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import java.math.BigInteger;
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import java.security.SecureRandom;
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import de.vanitasvitae.enigmandroid.enigma.Enigma;
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import de.vanitasvitae.enigmandroid.enigma.EnigmaStateBundle;
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import de.vanitasvitae.enigmandroid.enigma.inputPreparer.InputPreparer;
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import de.vanitasvitae.enigmandroid.layout.LayoutContainer;
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import de.vanitasvitae.enigmandroid.layout.PassphraseDialogBuilder;
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/**
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* Main Android Activity of the app
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* Copyright (C) 2015 Paul Schaub
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* @author vanitasvitae
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*/
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public class MainActivity extends Activity
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{
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private static final int RESULT_SETTINGS = 1;
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private static final String URI_CHANGELOG =
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"https://github.com/vanitasvitae/EnigmAndroid/blob/master/CHANGELOG.txt";
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public static final String APP_ID = "EnigmAndroid";
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private LayoutContainer layoutContainer;
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private String prefMachineType;
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private String prefNumericLanguage;
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private String prefMessageFormatting;
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private SecureRandom secureRandom;
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@Override
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public void onCreate(Bundle savedInstanceState)
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{
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super.onCreate(savedInstanceState);
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secureRandom = new SecureRandom();
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SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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this.prefMachineType = sharedPreferences.getString(SettingsActivity.PREF_MACHINE_TYPE, getResources().
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getStringArray(R.array.pref_alias_machine_type)[0]);
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ActivitySingleton singleton = ActivitySingleton.getInstance();
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singleton.setActivity(this);
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updateContentView();
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layoutContainer = LayoutContainer.createLayoutContainer(prefMachineType);
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updatePreferenceValues();
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//Handle shared text
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Intent intent = getIntent();
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String action = intent.getAction();
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String type = intent.getType();
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if (Intent.ACTION_SEND.equals(action) && type != null) {
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if ("text/plain".equals(type))
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{
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String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
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if (sharedText != null)
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{
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layoutContainer.getInput().setRawText(sharedText);
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}
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}
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}
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}
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@Override
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public void onConfigurationChanged(Configuration newConfig) {
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super.onConfigurationChanged(newConfig);
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this.updateContentView();
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}
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private void updateContentView()
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{
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switch (prefMachineType)
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{
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case "I":
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this.setContentView(R.layout.activity_main_i_m3);
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break;
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case "M3":
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this.setContentView(R.layout.activity_main_i_m3);
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break;
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case "M4":
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this.setContentView(R.layout.activity_main_m4);
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break;
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case "D":
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this.setContentView(R.layout.activity_main_d);
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break;
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case "K":
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case "KS":
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case "KSA":
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case "T":
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case "R":
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case "G31":
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case "G312":
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case "G260":
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this.setContentView(R.layout.activity_main_g_k_r_t);
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break;
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default:
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this.setContentView(R.layout.activity_main_i_m3);
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break;
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}
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}
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private void updatePreferenceValues()
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{
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SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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this.setPrefMachineType(sharedPreferences.getString(SettingsActivity.PREF_MACHINE_TYPE, getResources().
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getStringArray(R.array.pref_alias_machine_type)[0]));
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this.setPrefNumericLanguage(sharedPreferences.getString(SettingsActivity.PREF_NUMERIC_LANGUAGE, getResources().
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getStringArray(R.array.pref_alias_numeric_spelling_language)[0]));
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this.setPrefMessageFormatting(sharedPreferences.getString(SettingsActivity.PREF_MESSAGE_FORMATTING, getResources().
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getStringArray(R.array.pref_alias_message_formatting)[0]));
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}
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private void setPrefMachineType(String type)
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{
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if(prefMachineType == null || !prefMachineType.equals(type))
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{
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prefMachineType = type;
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String savedInput = "";
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if(layoutContainer != null)
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{
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savedInput = layoutContainer.getInput().getText();
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}
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updateContentView();
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layoutContainer = LayoutContainer.createLayoutContainer(prefMachineType);
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layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
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layoutContainer.getInput().setText(savedInput);
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SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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sharedPreferences.edit().putString(SettingsActivity.PREF_MACHINE_TYPE, type).apply();
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}
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}
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public String getPrefMachineType()
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{
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if(prefMachineType != null) return prefMachineType;
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SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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this.prefMachineType = sharedPreferences.getString(SettingsActivity.PREF_MACHINE_TYPE, getResources().
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getStringArray(R.array.pref_alias_machine_type)[0]);
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return prefMachineType;
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}
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public void setPrefNumericLanguage(String lang)
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{
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if(prefNumericLanguage == null || !prefNumericLanguage.equals(lang))
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{
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prefNumericLanguage = lang;
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layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
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}
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}
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public String getPrefNumericLanguage()
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{
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if(prefNumericLanguage != null) return prefNumericLanguage;
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SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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this.prefNumericLanguage = sharedPreferences.getString(SettingsActivity.PREF_NUMERIC_LANGUAGE, getResources().
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getStringArray(R.array.pref_alias_numeric_spelling_language)[0]);
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return prefNumericLanguage;
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}
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public void setPrefMessageFormatting(String messageFormatting)
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{
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if(prefMessageFormatting == null || !prefMessageFormatting.equals(messageFormatting))
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{
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prefMessageFormatting = messageFormatting;
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layoutContainer.setEditTextAdapter(messageFormatting);
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}
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}
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public String getPrefMessageFormatting()
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{
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if(prefMessageFormatting != null) return prefMessageFormatting;
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SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
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this.prefMessageFormatting = sharedPreferences.getString(SettingsActivity.PREF_MESSAGE_FORMATTING, getResources().
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getStringArray(R.array.pref_alias_message_formatting)[0]);
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return prefMessageFormatting;
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}
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public SecureRandom getSecureRandom()
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{
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return this.secureRandom;
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}
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public void onDialogFinished(EnigmaStateBundle state)
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{
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layoutContainer.getEnigma().setState(state);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu)
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{
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this.getMenuInflater().inflate(R.menu.main, menu);
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return true;
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}
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@Override
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/**
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* Handle Options menu clicks
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*/
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public boolean onOptionsItemSelected(MenuItem item)
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{
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int id = item.getItemId();
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if (id == R.id.action_reset)
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{
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layoutContainer.resetLayout();
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Toast.makeText(getApplicationContext(), R.string.message_reset,
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Toast.LENGTH_SHORT).show();
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return true;
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}
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else if (id == R.id.action_random_configuration)
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{
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layoutContainer.getEnigma().randomState();
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layoutContainer.syncStateFromEnigmaToLayout();
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Toast.makeText(getApplicationContext(), R.string.message_random,
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Toast.LENGTH_SHORT).show();
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return true;
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}
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else if (id == R.id.action_choose_ringsetting)
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{
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layoutContainer.showRingSettingsDialog();
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return true;
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}
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else if (id == R.id.action_settings)
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{
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Intent i = new Intent(this, SettingsActivity.class);
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startActivityForResult(i, RESULT_SETTINGS);
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}
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else if (id == R.id.action_about)
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{
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showAboutDialog();
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return true;
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}
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else if (id == R.id.action_send)
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{
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if(layoutContainer.getOutput().getText().length() == 0)
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{
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Toast.makeText(this, R.string.error_no_text_to_send, Toast.LENGTH_SHORT).show();
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}
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else
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{
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Intent sendIntent = new Intent();
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sendIntent.setAction(Intent.ACTION_SEND);
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sendIntent.putExtra(Intent.EXTRA_TEXT, layoutContainer.getOutput().getModifiedText());
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sendIntent.setType("text/plain");
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startActivity(Intent.createChooser(sendIntent, getResources().getText(R.string.send_to)));
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}
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}
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else if (id == R.id.action_receive_scan)
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{
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IntentIntegrator integrator = new IntentIntegrator(this);
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integrator.initiateScan();
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return true;
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}
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else if(id == R.id.action_share_scan)
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{
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IntentIntegrator QRIntegrator = new IntentIntegrator(this);
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layoutContainer.syncStateFromLayoutToEnigma();
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Log.d(APP_ID, "Sharing configuration to QR: " + layoutContainer.getEnigma().stateToString());
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QRIntegrator.shareText(APP_ID+"/"+layoutContainer.getEnigma().stateToString());
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return true;
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}
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else if(id == R.id.action_enter_seed)
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{
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new PassphraseDialogBuilder().showDialog();
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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/**
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* Set the chosen Configuration to the enigma, get the input string from the input text box and
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* prepare it, set the input to the prepared text, encrypt the prepared input and set the
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* encrypted string to the output text box and update the spinners to their new positions.
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* @param v View
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*/
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public void doCrypto(View v)
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{
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layoutContainer.doCrypto();
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}
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/**
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* Show a Dialog containing information about the app, license, usage, author and a link
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* to the changelog
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*/
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private void showAboutDialog()
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{
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final View aboutView = View.inflate(this, R.layout.dialog_about, null);
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//Get and set Version code
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PackageInfo pInfo = null;
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try{ pInfo = getPackageManager().getPackageInfo(this.getPackageName(), 0);}
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catch (PackageManager.NameNotFoundException e){ e.printStackTrace();}
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String version = pInfo.versionName+ " ("+pInfo.versionCode+")";
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TextView versionText = (TextView) aboutView.findViewById(R.id.about_version_section);
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versionText.setText(version);
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//Build and show dialog
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AlertDialog.Builder builder = new AlertDialog.Builder(this);
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builder.setTitle(R.string.title_about_dialog);
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builder.setView(aboutView)
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.setCancelable(true)
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.setPositiveButton(R.string.dialog_positiv, new DialogInterface.OnClickListener()
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{
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public void onClick(DialogInterface dialog, int id)
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{
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dialog.dismiss();
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}
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})
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.setNegativeButton(R.string.button_show_changelog, new DialogInterface.OnClickListener()
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{
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public void onClick(DialogInterface dialog, int id)
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{
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dialog.cancel();
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openWebPage(URI_CHANGELOG);
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}
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}).show();
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}
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/**
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* Handle preference changes
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* @param requestCode requestCode
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* @param resultCode resultCode (RESULT_SETTINGS is defined at the top)
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* @param data data (not important here)
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*/
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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super.onActivityResult(requestCode, resultCode, data);
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switch (requestCode) {
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case RESULT_SETTINGS:
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{
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SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
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this.setPrefMachineType(sharedPrefs.getString(SettingsActivity.PREF_MACHINE_TYPE, getResources()
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.getStringArray(R.array.pref_alias_machine_type)[0]));
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this.setPrefNumericLanguage(sharedPrefs.getString(SettingsActivity.PREF_NUMERIC_LANGUAGE, getResources().
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getStringArray(R.array.pref_alias_numeric_spelling_language)[0]));
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this.setPrefMessageFormatting(sharedPrefs.getString(SettingsActivity.PREF_MESSAGE_FORMATTING,
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getResources().getStringArray(R.array.pref_alias_message_formatting)[0]));
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break;
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}
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case IntentIntegrator.REQUEST_CODE:
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IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
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if (scanResult != null) {
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String content = scanResult.getContents();
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if(content == null) Log.e(APP_ID, "Error! Received nothing from QR-Code!");
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else {
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Log.d(APP_ID, "Received " + content + " from QR-Code!");
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restoreStateFromCode(content);
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}
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}
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}
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}
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/**
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* Set EnigmAndroid into a certain state as described in the QR-Code
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* @param mem content of the QR-Code
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*/
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private void restoreStateFromCode(String mem)
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{
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if(!mem.startsWith(APP_ID+"/"))
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{
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Toast.makeText(this, R.string.error_no_valid_qr, Toast.LENGTH_LONG).show();
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}
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else
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{
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mem = mem.substring((APP_ID+"/").length());
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BigInteger s = new BigInteger(mem, 16);
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Log.d(APP_ID, s.toString());
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setPrefMachineType(Enigma.chooseEnigmaFromSave(s));
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updateContentView();
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layoutContainer = LayoutContainer.createLayoutContainer(getPrefMachineType());
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layoutContainer.getEnigma().restoreState(Enigma.removeDigit(s,20));
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layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
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layoutContainer.syncStateFromEnigmaToLayout();
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}
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}
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/**
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* Set EnigmAndroid into a state calculated from the seed.
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* @param seed seed
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*/
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public void createStateFromSeed(String seed)
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{
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setPrefMachineType(Enigma.chooseEnigmaFromSeed(seed));
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updateContentView();
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layoutContainer = LayoutContainer.createLayoutContainer(getPrefMachineType());
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layoutContainer.getEnigma().setStateFromSeed(seed);
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layoutContainer.setInputPreparer(InputPreparer.createInputPreparer());
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layoutContainer.syncStateFromEnigmaToLayout();
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}
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/**
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* Open the web page with the URL url
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* @param url URL of the website
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*/
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private void openWebPage(String url) {
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Uri webPage = Uri.parse(url);
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Intent intent = new Intent(Intent.ACTION_VIEW, webPage);
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if (intent.resolveActivity(getPackageManager()) != null) {
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startActivity(intent);
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}
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}
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/**
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* Singleton that grants access to an Activity from anywhere within the app
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*/
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public static class ActivitySingleton
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{
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private static ActivitySingleton instance = null;
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private Activity activity;
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//private constructor
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private ActivitySingleton(){}
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//Singleton method
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public static ActivitySingleton getInstance()
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{
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if(instance == null) instance = new ActivitySingleton();
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return instance;
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}
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/**
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* Set an Activity that the Singleton returns
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* @param activity activity that's stored
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*/
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public void setActivity(Activity activity)
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{
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this.activity = activity;
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}
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/**
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* Returns the stored Activity
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* @return stored Activity
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*/
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public Activity getActivity()
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{
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return activity;
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}
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}
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}
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