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/*
* Copyright (c) 2012-2016 Arne Schwabe
* Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
*/
package de.blinkt.openvpn;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.net.VpnService;
import android.os.Build;
import android.os.Bundle;
import androidx.annotation.StringRes;
import de.blinkt.openvpn.core.ConnectionStatus;
import de.blinkt.openvpn.core.VpnStatus;
import se.leap.bitmaskclient.R;
import se.leap.bitmaskclient.eip.EipCommand;
import static se.leap.bitmaskclient.base.models.Constants.BROADCAST_RESULT_KEY;
import static se.leap.bitmaskclient.base.models.Constants.EIP_ACTION_PREPARE_VPN;
import static se.leap.bitmaskclient.base.models.Constants.EIP_N_CLOSEST_GATEWAY;
import static se.leap.bitmaskclient.base.models.Constants.PROVIDER_PROFILE;
import static se.leap.bitmaskclient.eip.EIP.ERRORS;
import static se.leap.bitmaskclient.eip.EipResultBroadcast.tellToReceiverOrBroadcast;
/**
* This Activity actually handles two stages of a launcher shortcut's life cycle.
* <p/>
* 1. Your application offers to provide shortcuts to the launcher. When
* the user installs a shortcut, an activity within your application
* generates the actual shortcut and returns it to the launcher, where it
* is shown to the user as an icon.
* <p/>
* 2. Any time the user clicks on an installed shortcut, an intent is sent.
* Typically this would then be handled as necessary by an activity within
* your application.
* <p/>
* We handle stage 1 (creating a shortcut) by simply sending back the information (in the form
* of an {@link android.content.Intent} that the launcher will use to create the shortcut.
* <p/>
* You can also implement this in an interactive way, by having your activity actually present
* UI for the user to select the specific nature of the shortcut, such as a contact, picture, URL,
* media item, or action.
* <p/>
* We handle stage 2 (responding to a shortcut) in this sample by simply displaying the contents
* of the incoming {@link android.content.Intent}.
* <p/>
* In a real application, you would probably use the shortcut intent to display specific content
* or start a particular operation.
*/
public class LaunchVPN extends Activity {
private static final int START_VPN_PROFILE = 70;
private static final String TAG = LaunchVPN.class.getName();
private VpnProfile selectedProfile;
private int selectedGateway;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
final Intent intent = getIntent();
final String action = intent.getAction();
if (!Intent.ACTION_MAIN.equals(action)) {
finish();
}
VpnProfile profileToConnect = (VpnProfile) intent.getExtras().getSerializable(PROVIDER_PROFILE);
selectedGateway = intent.getExtras().getInt(EIP_N_CLOSEST_GATEWAY, 0);
if (profileToConnect == null) {
showAlertInMainActivity(R.string.shortcut_profile_notfound);
finish();
} else {
selectedProfile = profileToConnect;
}
Intent vpnIntent;
try {
vpnIntent = VpnService.prepare(this.getApplicationContext());
} catch (NullPointerException npe) {
showAlertInMainActivity(R.string.vpn_error_establish);
finish();
return;
}
if (vpnIntent != null) {
// we don't have the permission yet to start the VPN
VpnStatus.updateStateString("USER_VPN_PERMISSION", "", R.string.state_user_vpn_permission,
ConnectionStatus.LEVEL_WAITING_FOR_USER_INPUT);
// Start the query
try {
startActivityForResult(vpnIntent, START_VPN_PROFILE);
} catch (ActivityNotFoundException ane) {
// Shame on you Sony! At least one user reported that
// an official Sony Xperia Arc S image triggers this exception
showAlertInMainActivity(R.string.no_vpn_support_image);
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==START_VPN_PROFILE && resultCode == Activity.RESULT_OK) {
EipCommand.launchVPNProfile(getApplicationContext(), selectedProfile, selectedGateway);
finish();
} else if (resultCode == Activity.RESULT_CANCELED) {
// User does not want us to start, so we just vanish
VpnStatus.updateStateString("USER_VPN_PERMISSION_CANCELLED", "", R.string.state_user_vpn_permission_cancelled,
ConnectionStatus.LEVEL_NOTCONNECTED);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
showAlertInMainActivity(R.string.nought_alwayson_warning);
}
finish();
}
}
void showAlertInMainActivity(@StringRes int errorString) {
Bundle result = new Bundle();
setErrorResult(result, errorString);
tellToReceiverOrBroadcast(this.getApplicationContext(), EIP_ACTION_PREPARE_VPN, RESULT_CANCELED, result);
}
/**
* helper function to add error to result bundle
*
* @param result - result of an action
* @param errorMessageId - id of string resource describing the error
*/
void setErrorResult(Bundle result, @StringRes int errorMessageId) {
VpnStatus.logError(errorMessageId);
result.putString(ERRORS, getResources().getString(errorMessageId));
result.putBoolean(BROADCAST_RESULT_KEY, false);
}
}
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