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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.vpn2;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageInfo;
import android.net.IConnectivityManager;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.os.UserManager;
import android.util.Log;
import com.android.internal.logging.nano.MetricsProto;
import com.android.internal.net.VpnConfig;
import com.android.settings.R;
import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
import androidx.appcompat.app.AlertDialog;
import androidx.fragment.app.Fragment;
/**
* Fragment wrapper around an {@link AppDialog}.
*/
public class AppDialogFragment extends InstrumentedDialogFragment implements AppDialog.Listener {
private static final String TAG_APP_DIALOG = "vpnappdialog";
private static final String TAG = "AppDialogFragment";
private static final String ARG_MANAGING = "managing";
private static final String ARG_LABEL = "label";
private static final String ARG_CONNECTED = "connected";
private static final String ARG_PACKAGE = "package";
private PackageInfo mPackageInfo;
private Listener mListener;
private UserManager mUserManager;
private final IConnectivityManager mService = IConnectivityManager.Stub.asInterface(
ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
@Override
public int getMetricsCategory() {
return MetricsProto.MetricsEvent.DIALOG_VPN_APP_CONFIG;
}
public interface Listener {
void onForget();
void onCancel();
}
public static void show(Fragment parent, PackageInfo packageInfo, String label,
boolean managing, boolean connected) {
if (!managing && !connected) {
// We can't display anything useful for this case.
return;
}
show(parent, null, packageInfo, label, managing, connected);
}
public static void show(Fragment parent, Listener listener, PackageInfo packageInfo,
String label, boolean managing, boolean connected) {
if (!parent.isAdded()) {
return;
}
Bundle args = new Bundle();
args.putParcelable(ARG_PACKAGE, packageInfo);
args.putString(ARG_LABEL, label);
args.putBoolean(ARG_MANAGING, managing);
args.putBoolean(ARG_CONNECTED, connected);
final AppDialogFragment frag = new AppDialogFragment();
frag.mListener = listener;
frag.setArguments(args);
frag.setTargetFragment(parent, 0);
frag.show(parent.getFragmentManager(), TAG_APP_DIALOG);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mUserManager = UserManager.get(getContext());
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Bundle args = getArguments();
final String label = args.getString(ARG_LABEL);
boolean managing = args.getBoolean(ARG_MANAGING);
boolean connected = args.getBoolean(ARG_CONNECTED);
mPackageInfo = args.getParcelable(ARG_PACKAGE);
if (managing) {
return new AppDialog(getActivity(), this, mPackageInfo, label);
} else {
// Build an AlertDialog with an option to disconnect.
AlertDialog.Builder dlog = new AlertDialog.Builder(getActivity())
.setTitle(label)
.setMessage(getActivity().getString(R.string.vpn_disconnect_confirm))
.setNegativeButton(getActivity().getString(R.string.vpn_cancel), null);
if (connected && !isUiRestricted()) {
dlog.setPositiveButton(getActivity().getString(R.string.vpn_disconnect),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
onDisconnect(dialog);
}
});
}
return dlog.create();
}
}
@Override
public void onCancel(DialogInterface dialog) {
dismiss();
if (mListener != null) {
mListener.onCancel();
}
super.onCancel(dialog);
}
@Override
public void onForget(final DialogInterface dialog) {
if (isUiRestricted()) {
return;
}
final int userId = getUserId();
try {
mService.setVpnPackageAuthorization(mPackageInfo.packageName, userId, false);
onDisconnect(dialog);
} catch (RemoteException e) {
Log.e(TAG, "Failed to forget authorization of " + mPackageInfo.packageName +
" for user " + userId, e);
}
if (mListener != null) {
mListener.onForget();
}
}
private void onDisconnect(final DialogInterface dialog) {
if (isUiRestricted()) {
return;
}
final int userId = getUserId();
try {
if (mPackageInfo.packageName.equals(VpnUtils.getConnectedPackage(mService, userId))) {
mService.setAlwaysOnVpnPackage(userId, null, /* lockdownEnabled */ false);
mService.prepareVpn(mPackageInfo.packageName, VpnConfig.LEGACY_VPN, userId);
}
} catch (RemoteException e) {
Log.e(TAG, "Failed to disconnect package " + mPackageInfo.packageName +
" for user " + userId, e);
}
}
private boolean isUiRestricted() {
final UserHandle userHandle = UserHandle.of(getUserId());
return mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN, userHandle);
}
private int getUserId() {
return UserHandle.getUserId(mPackageInfo.applicationInfo.uid);
}
}
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