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/**
* Copyright (c) 2018 LEAP Encryption Access Project and contributers
*
* 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 se.leap.bitmaskclient;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.annotation.IntDef;
import android.support.annotation.Nullable;
import android.util.Log;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import de.blinkt.openvpn.core.VpnStatus;
import se.leap.bitmaskclient.eip.EipCommand;
import se.leap.bitmaskclient.userstatus.User;
import static se.leap.bitmaskclient.Constants.APP_ACTION_CONFIGURE_ALWAYS_ON_PROFILE;
import static se.leap.bitmaskclient.Constants.EIP_RESTART_ON_BOOT;
import static se.leap.bitmaskclient.Constants.PREFERENCES_APP_VERSION;
import static se.leap.bitmaskclient.Constants.PROVIDER_EIP_DEFINITION;
import static se.leap.bitmaskclient.Constants.PROVIDER_KEY;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_CONFIGURE_LEAP;
import static se.leap.bitmaskclient.Constants.SHARED_PREFERENCES;
import static se.leap.bitmaskclient.MainActivity.ACTION_SHOW_VPN_FRAGMENT;
import static se.leap.bitmaskclient.utils.ConfigHelper.isDefaultBitmask;
import static se.leap.bitmaskclient.utils.PreferenceHelper.getSavedProviderFromSharedPreferences;
import static se.leap.bitmaskclient.utils.PreferenceHelper.providerInSharedPreferences;
import static se.leap.bitmaskclient.utils.PreferenceHelper.storeProviderInPreferences;
/**
* Activity shown at startup. Evaluates if App is started for the first time or has been upgraded
* and acts and calls another activity accordingly.
*
*/
public class StartActivity extends Activity{
public static final String TAG = StartActivity.class.getSimpleName();
@Retention(RetentionPolicy.SOURCE)
@IntDef({FIRST, NORMAL, UPGRADE})
private @interface StartupMode {}
private static final int FIRST = 0;
private static final int NORMAL = 1;
private static final int UPGRADE = 2;
private int versionCode;
private int previousVersionCode;
private SharedPreferences preferences;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
preferences = getSharedPreferences(SHARED_PREFERENCES, MODE_PRIVATE);
Log.d(TAG, "Started");
switch (checkAppStart()) {
case NORMAL:
break;
case FIRST:
storeAppVersion();
// TODO start ProfileCreation & replace below code
// (new Intent(getActivity(), ProviderListActivity.class), Constants.REQUEST_CODE_SWITCH_PROVIDER);
break;
case UPGRADE:
executeUpgrade();
// TODO show donation dialog
break;
}
// initialize app necessities
VpnStatus.initLogCache(getApplicationContext().getCacheDir());
User.init(getString(R.string.default_username));
prepareEIP();
}
/**
* check if normal start, first run, up or downgrade
* @return @StartupMode
*/
@StartupMode
private int checkAppStart() {
try {
versionCode = getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
previousVersionCode = preferences.getInt(PREFERENCES_APP_VERSION, -1);
// versions do match -> normal start
if (versionCode == previousVersionCode) {
Log.d(TAG, "App start was: NORMAL START");
return NORMAL;
}
// no previous app version -> first start
if (previousVersionCode == -1 ) {
Log.d(TAG, "FIRST START");
return FIRST;
}
// version has increased -> upgrade
if (versionCode > previousVersionCode) {
Log.d(TAG, "UPGRADE");
return UPGRADE;
}
} catch (PackageManager.NameNotFoundException e) {
Log.d(TAG, "Splash screen didn't find any " + getPackageName() + " package");
}
return NORMAL;
}
/**
* execute necessary upgrades for version change
*/
private void executeUpgrade() {
if (hasNewFeature(FeatureVersionCode.MULTIPLE_PROFILES)) {
// TODO prepare usage of multiple profiles
}
if (hasNewFeature(FeatureVersionCode.RENAMED_EIP_IN_PREFERENCES)) {
String eipJson = preferences.getString(PROVIDER_KEY, null);
if (eipJson != null) {
preferences.edit().putString(PROVIDER_EIP_DEFINITION, eipJson).
remove(PROVIDER_KEY).apply();
}
}
// ensure all upgrades have passed before storing new information
storeAppVersion();
}
/**
* check if an upgrade passed or moved to given milestone
* @param featureVersionCode Version code of the Milestone FeatureVersionCode.MILE_STONE
* @return true if milestone is reached - false otherwise
*/
private boolean hasNewFeature(int featureVersionCode) {
return previousVersionCode < featureVersionCode && versionCode >= featureVersionCode;
}
private void storeAppVersion() {
preferences.edit().putInt(PREFERENCES_APP_VERSION, versionCode).apply();
}
private void prepareEIP() {
boolean provider_exists = providerInSharedPreferences(preferences);
if (provider_exists) {
Provider provider = getSavedProviderFromSharedPreferences(preferences);
if(!provider.isConfigured()) {
configureLeapProvider();
} else {
Log.d(TAG, "vpn provider is configured");
if (getIntent() != null && getIntent().getBooleanExtra(EIP_RESTART_ON_BOOT, false)) {
EipCommand.startVPN(this.getApplicationContext(), true);
finish();
return;
}
showMainActivity();
}
} else {
configureLeapProvider();
}
}
private void configureLeapProvider() {
if (getIntent().hasExtra(APP_ACTION_CONFIGURE_ALWAYS_ON_PROFILE)) {
getIntent().removeExtra(APP_ACTION_CONFIGURE_ALWAYS_ON_PROFILE);
}
if (isDefaultBitmask()) {
startActivityForResult(new Intent(this, ProviderListActivity.class), REQUEST_CODE_CONFIGURE_LEAP);
} else { // custom branded app
startActivityForResult(new Intent(this, CustomProviderSetupActivity.class), REQUEST_CODE_CONFIGURE_LEAP);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE_CONFIGURE_LEAP) {
if (resultCode == RESULT_OK && data != null && data.hasExtra(Provider.KEY)) {
Provider provider = data.getParcelableExtra(Provider.KEY);
storeProviderInPreferences(preferences, provider);
ProviderObservable.getInstance().updateProvider(provider);
EipCommand.startVPN(this.getApplicationContext(), false);
showMainActivity();
} else if (resultCode == RESULT_CANCELED) {
finish();
}
}
}
private void showMainActivity() {
Intent intent = new Intent(this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.setAction(ACTION_SHOW_VPN_FRAGMENT);
startActivity(intent);
finish();
}
}
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