/*
|
* Copyright (C) 2016 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.network;
|
|
import android.content.Context;
|
import android.content.pm.PackageManager;
|
import android.content.pm.UserInfo;
|
import android.net.ConnectivityManager;
|
import android.net.IConnectivityManager;
|
import android.net.Network;
|
import android.net.NetworkCapabilities;
|
import android.net.NetworkRequest;
|
import android.os.RemoteException;
|
import android.os.ServiceManager;
|
import android.os.UserHandle;
|
import android.os.UserManager;
|
import android.provider.Settings;
|
import android.provider.SettingsSlicesContract;
|
import android.util.Log;
|
import android.util.SparseArray;
|
|
import androidx.annotation.VisibleForTesting;
|
import androidx.preference.Preference;
|
import androidx.preference.PreferenceScreen;
|
|
import com.android.internal.net.LegacyVpnInfo;
|
import com.android.internal.net.VpnConfig;
|
import com.android.settings.R;
|
import com.android.settings.core.PreferenceControllerMixin;
|
import com.android.settingslib.RestrictedLockUtilsInternal;
|
import com.android.settingslib.core.AbstractPreferenceController;
|
import com.android.settingslib.core.lifecycle.LifecycleObserver;
|
import com.android.settingslib.core.lifecycle.events.OnPause;
|
import com.android.settingslib.core.lifecycle.events.OnResume;
|
import com.android.settingslib.utils.ThreadUtils;
|
|
import java.util.List;
|
|
|
public class VpnPreferenceController extends AbstractPreferenceController
|
implements PreferenceControllerMixin, LifecycleObserver, OnResume, OnPause {
|
|
private static final String KEY_VPN_SETTINGS = "vpn_settings";
|
private static final NetworkRequest REQUEST = new NetworkRequest.Builder()
|
.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)
|
.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
|
.removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
|
.build();
|
private static final String TAG = "VpnPreferenceController";
|
|
private final String mToggleable;
|
private final UserManager mUserManager;
|
private final ConnectivityManager mConnectivityManager;
|
private final IConnectivityManager mConnectivityManagerService;
|
private Preference mPreference;
|
|
public VpnPreferenceController(Context context) {
|
super(context);
|
mToggleable = Settings.Global.getString(context.getContentResolver(),
|
Settings.Global.AIRPLANE_MODE_TOGGLEABLE_RADIOS);
|
mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
|
mConnectivityManager =
|
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
|
mConnectivityManagerService = IConnectivityManager.Stub.asInterface(
|
ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
|
}
|
|
@Override
|
public void displayPreference(PreferenceScreen screen) {
|
super.displayPreference(screen);
|
mPreference = screen.findPreference(KEY_VPN_SETTINGS);
|
// Manually set dependencies for Wifi when not toggleable.
|
if (mToggleable == null || !mToggleable.contains(Settings.Global.RADIO_WIFI)) {
|
if (mPreference != null) {
|
mPreference.setDependency(SettingsSlicesContract.KEY_AIRPLANE_MODE);
|
}
|
}
|
}
|
|
@Override
|
public boolean isAvailable() {
|
return !RestrictedLockUtilsInternal.hasBaseUserRestriction(mContext,
|
UserManager.DISALLOW_CONFIG_VPN, UserHandle.myUserId());
|
}
|
|
@Override
|
public String getPreferenceKey() {
|
return KEY_VPN_SETTINGS;
|
}
|
|
@Override
|
public void onPause() {
|
if (isAvailable()) {
|
mConnectivityManager.unregisterNetworkCallback(mNetworkCallback);
|
}
|
}
|
|
@Override
|
public void onResume() {
|
if (isAvailable()) {
|
mConnectivityManager.registerNetworkCallback(REQUEST, mNetworkCallback);
|
}
|
}
|
|
@VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
|
void updateSummary() {
|
if (mPreference == null) {
|
return;
|
}
|
// Copied from SystemUI::SecurityControllerImpl
|
SparseArray<VpnConfig> vpns = new SparseArray<>();
|
try {
|
final List<UserInfo> users = mUserManager.getUsers();
|
for (UserInfo user : users) {
|
VpnConfig cfg = mConnectivityManagerService.getVpnConfig(user.id);
|
if (cfg == null) {
|
continue;
|
} else if (cfg.legacy) {
|
// Legacy VPNs should do nothing if the network is disconnected. Third-party
|
// VPN warnings need to continue as traffic can still go to the app.
|
final LegacyVpnInfo legacyVpn =
|
mConnectivityManagerService.getLegacyVpnInfo(user.id);
|
if (legacyVpn == null || legacyVpn.state != LegacyVpnInfo.STATE_CONNECTED) {
|
continue;
|
}
|
}
|
vpns.put(user.id, cfg);
|
}
|
} catch (RemoteException rme) {
|
// Roll back to previous state
|
Log.e(TAG, "Unable to list active VPNs", rme);
|
return;
|
}
|
final UserInfo userInfo = mUserManager.getUserInfo(UserHandle.myUserId());
|
final int uid;
|
if (userInfo.isRestricted()) {
|
uid = userInfo.restrictedProfileParentId;
|
} else {
|
uid = userInfo.id;
|
}
|
VpnConfig vpn = vpns.get(uid);
|
final String summary;
|
if (vpn == null) {
|
summary = mContext.getString(R.string.vpn_disconnected_summary);
|
} else {
|
summary = getNameForVpnConfig(vpn, UserHandle.of(uid));
|
}
|
ThreadUtils.postOnMainThread(() -> mPreference.setSummary(summary));
|
}
|
|
@VisibleForTesting
|
String getNameForVpnConfig(VpnConfig cfg, UserHandle user) {
|
if (cfg.legacy) {
|
return mContext.getString(R.string.wifi_display_status_connected);
|
}
|
// The package name for an active VPN is stored in the 'user' field of its VpnConfig
|
final String vpnPackage = cfg.user;
|
try {
|
Context userContext = mContext.createPackageContextAsUser(mContext.getPackageName(),
|
0 /* flags */, user);
|
return VpnConfig.getVpnLabel(userContext, vpnPackage).toString();
|
} catch (PackageManager.NameNotFoundException nnfe) {
|
Log.e(TAG, "Package " + vpnPackage + " is not present", nnfe);
|
return null;
|
}
|
}
|
|
// Copied from SystemUI::SecurityControllerImpl
|
private final ConnectivityManager.NetworkCallback
|
mNetworkCallback = new ConnectivityManager.NetworkCallback() {
|
@Override
|
public void onAvailable(Network network) {
|
updateSummary();
|
}
|
|
@Override
|
public void onLost(Network network) {
|
updateSummary();
|
}
|
};
|
}
|
