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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.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Vibrator;
import androidx.annotation.NonNull;
import androidx.fragment.app.DialogFragment;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentTransaction;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.widget.AppCompatButton;
import androidx.appcompat.widget.AppCompatImageView;
import androidx.appcompat.widget.AppCompatTextView;
import android.text.TextUtils;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Observable;
import java.util.Observer;
import butterknife.ButterKnife;
import butterknife.InjectView;
import butterknife.OnClick;
import de.blinkt.openvpn.core.IOpenVPNServiceInternal;
import de.blinkt.openvpn.core.OpenVPNService;
import de.blinkt.openvpn.core.VpnStatus;
import se.leap.bitmaskclient.eip.EipCommand;
import se.leap.bitmaskclient.eip.EipStatus;
import se.leap.bitmaskclient.fragments.DonationReminderDialog;
import se.leap.bitmaskclient.views.VpnStateImage;
import static android.view.View.GONE;
import static android.view.View.VISIBLE;
import static de.blinkt.openvpn.core.ConnectionStatus.LEVEL_NONETWORK;
import static se.leap.bitmaskclient.Constants.ASK_TO_CANCEL_VPN;
import static se.leap.bitmaskclient.Constants.EIP_RESTART_ON_BOOT;
import static se.leap.bitmaskclient.Constants.PROVIDER_KEY;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_CONFIGURE_LEAP;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_LOG_IN;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_SWITCH_PROVIDER;
import static se.leap.bitmaskclient.Constants.SHARED_PREFERENCES;
import static se.leap.bitmaskclient.EipSetupObserver.connectionRetry;
import static se.leap.bitmaskclient.EipSetupObserver.gatewayOrder;
import static se.leap.bitmaskclient.EipSetupObserver.reconnectingWithDifferentGateway;
import static se.leap.bitmaskclient.ProviderAPI.UPDATE_INVALID_VPN_CERTIFICATE;
import static se.leap.bitmaskclient.ProviderAPI.USER_MESSAGE;
import static se.leap.bitmaskclient.R.string.vpn_certificate_user_message;
import static se.leap.bitmaskclient.utils.ConfigHelper.isDefaultBitmask;
import static se.leap.bitmaskclient.utils.ViewHelper.convertDimensionToPx;
public class EipFragment extends Fragment implements Observer {
public final static String TAG = EipFragment.class.getSimpleName();
private SharedPreferences preferences;
private Provider provider;
@InjectView(R.id.background)
AppCompatImageView background;
@InjectView(R.id.vpn_state_image)
VpnStateImage vpnStateImage;
@InjectView(R.id.vpn_main_button)
AppCompatButton mainButton;
@InjectView(R.id.routed_text)
AppCompatTextView routedText;
@InjectView(R.id.vpn_route)
AppCompatTextView vpnRoute;
private EipStatus eipStatus;
//---saved Instance -------
private final String KEY_SHOW_PENDING_START_CANCELLATION = "KEY_SHOW_PENDING_START_CANCELLATION";
private final String KEY_SHOW_ASK_TO_STOP_EIP = "KEY_SHOW_ASK_TO_STOP_EIP";
private boolean showPendingStartCancellation = false;
private boolean showAskToStopEip = false;
//------------------------
AlertDialog alertDialog;
private IOpenVPNServiceInternal mService;
private ServiceConnection openVpnConnection;
@Override
public void onAttach(Context context) {
super.onAttach(context);
Bundle arguments = getArguments();
Activity activity = getActivity();
if (activity != null) {
if (arguments != null) {
provider = arguments.getParcelable(PROVIDER_KEY);
if (provider == null) {
handleNoProvider(activity);
} else {
Log.d(TAG, provider.getName() + " configured as provider");
}
} else {
handleNoProvider(activity);
}
}
}
private void handleNoProvider(Activity activity) {
if (isDefaultBitmask()) {
activity.startActivityForResult(new Intent(activity, ProviderListActivity.class), REQUEST_CODE_SWITCH_PROVIDER);
} else {
Log.e(TAG, "no provider given - try to reconfigure custom provider");
startActivityForResult(new Intent(activity, CustomProviderSetupActivity.class), REQUEST_CODE_CONFIGURE_LEAP);
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
openVpnConnection = new EipFragmentServiceConnection();
eipStatus = EipStatus.getInstance();
Activity activity = getActivity();
if (activity != null) {
preferences = getActivity().getSharedPreferences(SHARED_PREFERENCES, Context.MODE_PRIVATE);
} else {
Log.e(TAG, "activity is null in onCreate - no preferences set!");
}
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
eipStatus.addObserver(this);
View view = inflater.inflate(R.layout.f_eip, container, false);
ButterKnife.inject(this, view);
Bundle arguments = getArguments();
if (arguments != null && arguments.containsKey(ASK_TO_CANCEL_VPN) && arguments.getBoolean(ASK_TO_CANCEL_VPN)) {
arguments.remove(ASK_TO_CANCEL_VPN);
setArguments(arguments);
askToStopEIP();
}
restoreFromSavedInstance(savedInstanceState);
return view;
}
@Override
public void onStart() {
super.onStart();
if (DonationReminderDialog.isCallable(getContext())) {
showDonationReminderDialog();
}
}
@Override
public void onResume() {
super.onResume();
//FIXME: avoid race conditions while checking certificate an logging in at about the same time
//eipCommand(Constants.EIP_ACTION_CHECK_CERT_VALIDITY);
bindOpenVpnService();
handleNewState();
}
@Override
public void onPause() {
super.onPause();
Activity activity = getActivity();
if (activity != null) {
getActivity().unbindService(openVpnConnection);
}
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
if (showAskToStopEip) {
outState.putBoolean(KEY_SHOW_ASK_TO_STOP_EIP, true);
alertDialog.dismiss();
} else if (showPendingStartCancellation) {
outState.putBoolean(KEY_SHOW_PENDING_START_CANCELLATION, true);
alertDialog.dismiss();
}
}
private void restoreFromSavedInstance(Bundle savedInstanceState) {
if (savedInstanceState != null && savedInstanceState.containsKey(KEY_SHOW_PENDING_START_CANCELLATION)) {
showPendingStartCancellation = true;
askPendingStartCancellation();
} else if (savedInstanceState != null && savedInstanceState.containsKey(KEY_SHOW_ASK_TO_STOP_EIP)) {
showAskToStopEip = true;
askToStopEIP();
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
eipStatus.deleteObserver(this);
}
private void saveStatus(boolean restartOnBoot) {
preferences.edit().putBoolean(EIP_RESTART_ON_BOOT, restartOnBoot).apply();
}
@OnClick(R.id.vpn_main_button)
void onButtonClick() {
handleIcon();
}
@OnClick(R.id.vpn_state_image)
void onVpnStateImageClick() {
handleIcon();
}
void handleIcon() {
if (isOpenVpnRunningWithoutNetwork() || eipStatus.isConnected() || eipStatus.isConnecting())
handleSwitchOff();
else
handleSwitchOn();
}
private void handleSwitchOn() {
Context context = getContext();
if (context == null) {
Log.e(TAG, "context is null when switch turning on");
return;
}
if (canStartEIP()) {
startEipFromScratch();
} else if (canLogInToStartEIP()) {
askUserToLogIn(getString(vpn_certificate_user_message));
} else {
// provider has no VpnCertificate but user is logged in
updateInvalidVpnCertificate();
}
}
private boolean canStartEIP() {
boolean certificateExists = provider.hasVpnCertificate();
boolean isAllowedAnon = provider.allowsAnonymous();
return (isAllowedAnon || certificateExists) && !eipStatus.isConnected() && !eipStatus.isConnecting();
}
private boolean canLogInToStartEIP() {
boolean isAllowedRegistered = provider.allowsRegistered();
boolean isLoggedIn = LeapSRPSession.loggedIn();
return isAllowedRegistered && !isLoggedIn && !eipStatus.isConnecting() && !eipStatus.isConnected();
}
private void handleSwitchOff() {
if (isOpenVpnRunningWithoutNetwork() || eipStatus.isConnecting()) {
askPendingStartCancellation();
} else if (eipStatus.isConnected()) {
askToStopEIP();
}
}
private void setMainButtonEnabled(boolean enabled) {
mainButton.setEnabled(enabled);
vpnStateImage.setEnabled(enabled);
}
public void startEipFromScratch() {
saveStatus(true);
Context context = getContext();
if (context == null) {
Log.e(TAG, "context is null when trying to start VPN");
return;
}
EipCommand.startVPN(context.getApplicationContext(), false);
vpnStateImage.showProgress();
routedText.setVisibility(GONE);
vpnRoute.setVisibility(GONE);
colorBackgroundALittle();
}
protected void stopEipIfPossible() {
Context context = getContext();
if (context == null) {
Log.e(TAG, "context is null when trying to stop EIP");
return;
}
EipCommand.stopVPN(context.getApplicationContext());
}
private void askPendingStartCancellation() {
Activity activity = getActivity();
if (activity == null) {
Log.e(TAG, "activity is null when asking to cancel");
return;
}
try {
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(getActivity());
showPendingStartCancellation = true;
alertDialog = alertBuilder.setTitle(activity.getString(R.string.eip_cancel_connect_title))
.setMessage(activity.getString(R.string.eip_cancel_connect_text))
.setPositiveButton((android.R.string.yes), (dialog, which) -> stopEipIfPossible())
.setNegativeButton(activity.getString(android.R.string.no), (dialog, which) -> {
}).setOnDismissListener(dialog -> showPendingStartCancellation = false).show();
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
protected void askToStopEIP() {
Activity activity = getActivity();
if (activity == null) {
Log.e(TAG, "activity is null when asking to stop EIP");
return;
}
try {
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(activity);
showAskToStopEip = true;
alertDialog = alertBuilder.setTitle(activity.getString(R.string.eip_cancel_connect_title))
.setMessage(activity.getString(R.string.eip_warning_browser_inconsistency))
.setPositiveButton((android.R.string.yes), (dialog, which) -> stopEipIfPossible())
.setNegativeButton(activity.getString(android.R.string.no), (dialog, which) -> {
}).setOnDismissListener(dialog -> showAskToStopEip = false).show();
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
@Override
public void update(Observable observable, Object data) {
if (observable instanceof EipStatus) {
eipStatus = (EipStatus) observable;
Activity activity = getActivity();
if (activity != null) {
activity.runOnUiThread(this::handleNewState);
} else {
Log.e("EipFragment", "activity is null");
}
} else if (observable instanceof ProviderObservable) {
provider = ((ProviderObservable) observable).getCurrentProvider();
}
}
private void handleNewState() {
Activity activity = getActivity();
if (activity == null) {
Log.e(TAG, "activity is null while trying to handle new state");
return;
}
//Log.d(TAG, "eip fragment eipStatus state: " + eipStatus.getState() + " - level: " + eipStatus.getLevel() + " - is reconnecting: " + eipStatus.isReconnecting());
if (eipStatus.isConnecting() ) {
setMainButtonEnabled(true);
showConnectingLayout(activity);
if (eipStatus.isReconnecting()) {
//Log.d(TAG, "eip show reconnecting toast!");
//showReconnectToast(activity);
}
} else if (eipStatus.isConnected() ) {
mainButton.setText(activity.getString(R.string.vpn_button_turn_off));
setMainButtonEnabled(true);
vpnStateImage.setStateIcon(R.drawable.vpn_connected);
vpnStateImage.stopProgress(false);
routedText.setText(R.string.vpn_securely_routed);
routedText.setVisibility(VISIBLE);
vpnRoute.setVisibility(VISIBLE);
setVpnRouteText();
colorBackground();
} else if(isOpenVpnRunningWithoutNetwork()){
mainButton.setText(activity.getString(R.string.vpn_button_turn_off));
setMainButtonEnabled(true);
vpnStateImage.setStateIcon(R.drawable.vpn_disconnected);
vpnStateImage.stopProgress(false);
routedText.setText(R.string.vpn_securely_routed_no_internet);
routedText.setVisibility(VISIBLE);
vpnRoute.setVisibility(VISIBLE);
setVpnRouteText();
colorBackgroundALittle();
} else if (eipStatus.isDisconnected() && reconnectingWithDifferentGateway()) {
showConnectingLayout(activity);
// showRetryToast(activity);
} else if (eipStatus.isDisconnecting()) {
setMainButtonEnabled(false);
showDisconnectingLayout(activity);
} else if (eipStatus.isBlocking()) {
setMainButtonEnabled(true);
vpnStateImage.setStateIcon(R.drawable.vpn_blocking);
vpnStateImage.stopProgress(false);
routedText.setText(getString(R.string.void_vpn_establish, getString(R.string.app_name)));
routedText.setVisibility(VISIBLE);
vpnRoute.setVisibility(GONE);
colorBackgroundALittle();
} else {
mainButton.setText(activity.getString(R.string.vpn_button_turn_on));
setMainButtonEnabled(true);
vpnStateImage.setStateIcon(R.drawable.vpn_disconnected);
vpnStateImage.stopProgress(false);
routedText.setVisibility(GONE);
vpnRoute.setVisibility(GONE);
greyscaleBackground();
}
}
private void showToast(Activity activity, String message, boolean vibrateLong) {
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.custom_toast,
activity.findViewById(R.id.custom_toast_container));
TextView text = layout.findViewById(R.id.text);
text.setText(message);
Vibrator v = (Vibrator) activity.getSystemService(Context.VIBRATOR_SERVICE);
if (vibrateLong) {
v.vibrate(100);
v.vibrate(200);
} else {
v.vibrate(100);
}
Toast toast = new Toast(activity.getApplicationContext());
toast.setGravity(Gravity.BOTTOM, 0, convertDimensionToPx(this.getContext(), R.dimen.stdpadding));
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
}
private void showReconnectToast(Activity activity) {
String message = (String.format("Retry %d of %d before the next closest gateway will be selected.", connectionRetry()+1, 5));
showToast(activity, message, false);
}
private void showRetryToast(Activity activity) {
int nClosestGateway = gatewayOrder();
String message = String.format("Server number " + nClosestGateway + " not reachable. Trying next gateway.");
showToast(activity, message, true );
}
private void showConnectingLayout(Context activity) {
showConnectionTransitionLayout(activity, true);
}
private void showDisconnectingLayout(Activity activity) {
showConnectionTransitionLayout(activity, false);
}
private void showConnectionTransitionLayout(Context activity, boolean isConnecting) {
mainButton.setText(activity.getString(android.R.string.cancel));
vpnStateImage.setStateIcon(R.drawable.vpn_connecting);
vpnStateImage.showProgress();
routedText.setVisibility(GONE);
vpnRoute.setVisibility(GONE);
if (isConnecting) {
colorBackgroundALittle();
} else {
greyscaleBackground();
}
}
private boolean isOpenVpnRunningWithoutNetwork() {
boolean isRunning = false;
try {
isRunning = eipStatus.getLevel() == LEVEL_NONETWORK &&
mService.isVpnRunning();
} catch (Exception e) {
//eat me
e.printStackTrace();
}
return isRunning;
}
private void bindOpenVpnService() {
Activity activity = getActivity();
if (activity == null) {
Log.e(TAG, "activity is null when binding OpenVpn");
return;
}
Intent intent = new Intent(activity, OpenVPNService.class);
intent.setAction(OpenVPNService.START_SERVICE);
activity.bindService(intent, openVpnConnection, Context.BIND_AUTO_CREATE);
}
private void greyscaleBackground() {
ColorMatrix matrix = new ColorMatrix();
matrix.setSaturation(0);
ColorMatrixColorFilter cf = new ColorMatrixColorFilter(matrix);
background.setColorFilter(cf);
background.setImageAlpha(255);
}
private void colorBackgroundALittle() {
background.setColorFilter(null);
background.setImageAlpha(144);
}
private void colorBackground() {
background.setColorFilter(null);
background.setImageAlpha(210);
}
private void updateInvalidVpnCertificate() {
ProviderAPICommand.execute(getContext(), UPDATE_INVALID_VPN_CERTIFICATE, provider);
}
private void askUserToLogIn(String userMessage) {
Intent intent = new Intent(getContext(), LoginActivity.class);
intent.putExtra(PROVIDER_KEY, provider);
if(userMessage != null) {
intent.putExtra(USER_MESSAGE, userMessage);
}
Activity activity = getActivity();
if (activity != null) {
activity.startActivityForResult(intent, REQUEST_CODE_LOG_IN);
}
}
private void setVpnRouteText() {
String vpnRouteString = provider.getName();
String profileName = VpnStatus.getLastConnectedVpnName();
if (!TextUtils.isEmpty(profileName)) {
vpnRouteString += " (" + profileName + ")";
}
vpnRoute.setText(vpnRouteString);
}
private class EipFragmentServiceConnection implements ServiceConnection {
@Override
public void onServiceConnected(ComponentName className,
IBinder service) {
mService = IOpenVPNServiceInternal.Stub.asInterface(service);
handleNewState();
}
@Override
public void onServiceDisconnected(ComponentName arg0) {
mService = null;
}
}
public void showDonationReminderDialog() {
try {
FragmentTransaction fragmentTransaction = new FragmentManagerEnhanced(
getActivity().getSupportFragmentManager()).removePreviousFragment(
DonationReminderDialog.TAG);
DialogFragment newFragment = new DonationReminderDialog();
newFragment.setCancelable(false);
newFragment.show(fragmentTransaction, DonationReminderDialog.TAG);
} catch (IllegalStateException | NullPointerException e) {
e.printStackTrace();
}
}
}
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