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package se.leap.bitmaskclient.base.fragments;
import android.app.Dialog;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.provider.Settings;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatDialogFragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.Observable;
import java.util.Observer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import de.blinkt.openvpn.core.VpnStatus;
import se.leap.bitmaskclient.R;
import se.leap.bitmaskclient.base.utils.PreferenceHelper;
import se.leap.bitmaskclient.base.views.IconCheckboxEntry;
import se.leap.bitmaskclient.databinding.DListSelectionBinding;
import se.leap.bitmaskclient.firewall.FirewallManager;
import se.leap.bitmaskclient.tethering.TetheringObservable;
/**
* Copyright (c) 2020 LEAP Encryption Access Project and contributers
* <p>
* 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.
* <p>
* 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.
* <p>
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
public class TetheringDialog extends AppCompatDialogFragment implements Observer {
public final static String TAG = TetheringDialog.class.getName();
DialogListAdapter adapter;
private DialogListAdapter.ViewModel[] dataset;
public static class DialogListAdapter extends RecyclerView.Adapter<DialogListAdapter.ViewHolder> {
interface OnItemClickListener {
void onItemClick(ViewModel item);
}
private ViewModel[] dataSet;
private OnItemClickListener clickListener;
DialogListAdapter(ViewModel[] dataSet, OnItemClickListener clickListener) {
this.dataSet = dataSet;
this.clickListener = clickListener;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
IconCheckboxEntry v = new IconCheckboxEntry(viewGroup.getContext());
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
viewHolder.bind(dataSet[i], clickListener);
}
@Override
public int getItemCount() {
return dataSet.length;
}
public static class ViewModel {
public Drawable image;
public String text;
public boolean checked;
public boolean enabled;
ViewModel(Drawable image, String text, boolean checked, boolean enabled) {
this.image = image;
this.text = text;
this.checked = checked;
this.enabled = enabled;
}
}
public static class ViewHolder extends RecyclerView.ViewHolder {
ViewHolder(IconCheckboxEntry v) {
super(v);
}
public void bind(ViewModel model, OnItemClickListener onClickListener) {
((IconCheckboxEntry) this.itemView).bind(model);
this.itemView.setOnClickListener(v -> {
model.checked = !model.checked;
((IconCheckboxEntry) itemView).setChecked(model.checked);
onClickListener.onItemClick(model);
});
}
}
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
DListSelectionBinding binding = DListSelectionBinding.inflate(inflater);
binding.tvTitle.setText(R.string.tethering);
binding.userMessage.setMovementMethod(LinkMovementMethod.getInstance());
binding.userMessage.setLinkTextColor(getContext().getResources().getColor(R.color.colorPrimary));
binding.userMessage.setText(createUserMessage());
initDataset();
adapter = new DialogListAdapter(dataset, this::onItemClick);
binding.selectionListView.setAdapter(adapter);
binding.selectionListView.setLayoutManager(new LinearLayoutManager(getActivity()));
builder.setView(binding.getRoot())
.setPositiveButton(android.R.string.ok, (dialog, id) -> {
PreferenceHelper.allowWifiTethering(dataset[0].checked);
PreferenceHelper.allowUsbTethering(dataset[1].checked);
PreferenceHelper.allowBluetoothTethering(dataset[2].checked);
TetheringObservable.allowVpnWifiTethering(dataset[0].checked);
TetheringObservable.allowVpnUsbTethering(dataset[1].checked);
TetheringObservable.allowVpnBluetoothTethering(dataset[2].checked);
FirewallManager firewallManager = new FirewallManager(getContext().getApplicationContext(), false);
if (VpnStatus.isVPNActive()) {
if (TetheringObservable.getInstance().getTetheringState().hasAnyDeviceTetheringEnabled() &&
TetheringObservable.getInstance().getTetheringState().hasAnyVpnTetheringAllowed()) {
firewallManager.startTethering();
} else {
firewallManager.stopTethering();
}
}
}).setNegativeButton(R.string.cancel, (dialog, id) -> dialog.cancel());
return builder.create();
}
@Override
public void onResume() {
super.onResume();
dataset[0].enabled = TetheringObservable.getInstance().isWifiTetheringEnabled();
dataset[1].enabled = TetheringObservable.getInstance().isUsbTetheringEnabled();
dataset[2].enabled = TetheringObservable.getInstance().isBluetoothTetheringEnabled();
adapter.notifyDataSetChanged();
TetheringObservable.getInstance().addObserver(this);
}
@Override
public void onPause() {
super.onPause();
TetheringObservable.getInstance().deleteObserver(this);
}
public void onItemClick(DialogListAdapter.ViewModel item) {
}
private CharSequence createUserMessage() {
String tetheringMessage = getString(R.string.tethering_message);
String systemSettingsMessage = getString(R.string.tethering_enabled_message);
Pattern pattern = Pattern.compile("([\\w .]*)(<b>)+([\\w ]*)(</b>)([\\w .]*)");
Matcher matcher = pattern.matcher(systemSettingsMessage);
int startIndex = 0;
int endIndex = 0;
if (matcher.matches()) {
startIndex = matcher.start(2);
try {
endIndex = startIndex + matcher.group(3).length();
} catch (NullPointerException npe) {
endIndex = -1;
}
}
systemSettingsMessage = systemSettingsMessage.replace("<b>", "").replace("</b>", "");
String wholeMessage = systemSettingsMessage + "\n\n" + tetheringMessage;
if (startIndex == -1 || endIndex == -1) {
Log.e(TAG, "Tethering string has wrong formatting!");
return wholeMessage;
}
Spannable spannable = new SpannableString(wholeMessage);
spannable.setSpan(new ClickableSpan() {
@Override
public void onClick(@NonNull View widget) {
try {
final Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
final ComponentName cn = new ComponentName("com.android.settings", "com.android.settings.TetherSettings");
intent.setComponent(cn);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} catch (ActivityNotFoundException e) {
Intent intent = new Intent(Settings.ACTION_WIRELESS_SETTINGS);
startActivity(intent);
}
}
}, startIndex, endIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
return spannable;
}
private void initDataset() {
dataset = new DialogListAdapter.ViewModel[] {
new DialogListAdapter.ViewModel(getContext().getResources().getDrawable(R.drawable.ic_wifi),
getContext().getString(R.string.tethering_wifi),
PreferenceHelper.isWifiTetheringAllowed(),
TetheringObservable.getInstance().isWifiTetheringEnabled()),
new DialogListAdapter.ViewModel(getContext().getResources().getDrawable(R.drawable.ic_usb),
getContext().getString(R.string.tethering_usb),
PreferenceHelper.isUsbTetheringAllowed(),
TetheringObservable.getInstance().isUsbTetheringEnabled()),
new DialogListAdapter.ViewModel(getContext().getResources().getDrawable(R.drawable.ic_bluetooth),
getContext().getString(R.string.tethering_bluetooth),
PreferenceHelper.isBluetoothTetheringAllowed(),
TetheringObservable.getInstance().isUsbTetheringEnabled())
};
}
@Override
public void update(Observable o, Object arg) {
if (o instanceof TetheringObservable) {
TetheringObservable observable = (TetheringObservable) o;
Log.d(TAG, "TetheringObservable is updated");
dataset[0].enabled = observable.isWifiTetheringEnabled();
dataset[1].enabled = observable.isUsbTetheringEnabled();
dataset[2].enabled = observable.isBluetoothTetheringEnabled();
adapter.notifyDataSetChanged();
}
}
}
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