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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.annotation.TargetApi;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.VpnService;
import android.os.Build;
import android.os.Bundle;
import java.io.IOException;
import de.blinkt.openvpn.core.ConnectionStatus;
import de.blinkt.openvpn.core.Preferences;
import de.blinkt.openvpn.core.VPNLaunchHelper;
import de.blinkt.openvpn.core.VpnStatus;
import se.leap.bitmaskclient.base.MainActivity;
import se.leap.bitmaskclient.R;
import static se.leap.bitmaskclient.base.models.Constants.EIP_ACTION_PREPARE_VPN;
import static se.leap.bitmaskclient.base.models.Constants.PROVIDER_PROFILE;
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 {
public static final String EXTRA_KEY = "de.blinkt.openvpn.shortcutProfileUUID";
public static final String EXTRA_NAME = "de.blinkt.openvpn.shortcutProfileName";
public static final String EXTRA_HIDELOG = "de.blinkt.openvpn.showNoLogWindow";
public static final String CLEARLOG = "clearlogconnect";
private static final int START_VPN_PROFILE = 70;
private static final String TAG = LaunchVPN.class.getName();
private VpnProfile mSelectedProfile;
private boolean mhideLog = false;
private boolean mCmfixed = false;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
startVpnFromIntent();
}
protected void startVpnFromIntent() {
// Resolve the intent
final Intent intent = getIntent();
final String action = intent.getAction();
// If the intent is a request to create a shortcut, we'll do that and exit
if (Intent.ACTION_MAIN.equals(action)) {
// Check if we need to clear the log
if (Preferences.getDefaultSharedPreferences(this).getBoolean(CLEARLOG, true))
VpnStatus.clearLog();
// we got called to be the starting point, most likely a shortcut
mhideLog = intent.getBooleanExtra(EXTRA_HIDELOG, false);
VpnProfile profileToConnect = (VpnProfile) intent.getExtras().getSerializable(PROVIDER_PROFILE);
if (profileToConnect == null) {
VpnStatus.logError(R.string.shortcut_profile_notfound);
// show Log window to display error
showLogWindow();
finish();
} else {
mSelectedProfile = profileToConnect;
launchVPN();
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==START_VPN_PROFILE) {
SharedPreferences prefs = Preferences.getDefaultSharedPreferences(this);
boolean showLogWindow = prefs.getBoolean("showlogwindow", true);
if(!mhideLog && showLogWindow)
showLogWindow();
VPNLaunchHelper.startOpenVpn(mSelectedProfile, getBaseContext());
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)
VpnStatus.logError(R.string.nought_alwayson_warning);
finish();
}
}
void showLogWindow() {
Intent startLW = new Intent(getBaseContext(), MainActivity.class);
startLW.putExtra(MainActivity.ACTION_SHOW_LOG_FRAGMENT, true);
startLW.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(startLW);
}
void showConfigErrorDialog(int vpnok) {
AlertDialog.Builder d = new AlertDialog.Builder(this);
d.setTitle(R.string.config_error_found);
d.setMessage(vpnok);
d.setPositiveButton(android.R.string.ok, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
d.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
finish();
}
});
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1)
setOnDismissListener(d);
d.show();
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private void setOnDismissListener(AlertDialog.Builder d) {
d.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
finish();
}
});
}
void launchVPN() {
int vpnok = mSelectedProfile.checkProfile(this);
if (vpnok != R.string.no_error_found) {
showConfigErrorDialog(vpnok);
return;
}
Intent intent = null;
try {
intent = VpnService.prepare(this.getApplicationContext());
} catch (NullPointerException npe) {
tellToReceiverOrBroadcast(this.getApplicationContext(), EIP_ACTION_PREPARE_VPN, RESULT_CANCELED);
finish();
return;
}
// Check if we want to fix /dev/tun
SharedPreferences prefs = Preferences.getDefaultSharedPreferences(this);
boolean usecm9fix = prefs.getBoolean("useCM9Fix", false);
boolean loadTunModule = prefs.getBoolean("loadTunModule", false);
if (loadTunModule)
execeuteSUcmd("insmod /system/lib/modules/tun.ko");
if (usecm9fix && !mCmfixed) {
execeuteSUcmd("chown system /dev/tun");
}
if (intent != null) {
VpnStatus.updateStateString("USER_VPN_PERMISSION", "", R.string.state_user_vpn_permission,
ConnectionStatus.LEVEL_WAITING_FOR_USER_INPUT);
// Start the query
try {
startActivityForResult(intent, 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
VpnStatus.logError(R.string.no_vpn_support_image);
showLogWindow();
}
} else {
onActivityResult(START_VPN_PROFILE, Activity.RESULT_OK, null);
}
}
private void execeuteSUcmd(String command) {
try {
ProcessBuilder pb = new ProcessBuilder("su", "-c", command);
Process p = pb.start();
int ret = p.waitFor();
if (ret == 0)
mCmfixed = true;
} catch (InterruptedException | IOException e) {
VpnStatus.logException("SU command", e);
}
}
}
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