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SecurityControllerImpl.java
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SecurityControllerImpl.java
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/*
* Copyright (C) 2014 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.systemui.statusbar.policy;
import android.app.admin.DevicePolicyManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.ConnectivityManager;
import android.net.ConnectivityManager.NetworkCallback;
import android.net.IConnectivityManager;
import android.net.NetworkCapabilities;
import android.net.NetworkRequest;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.text.TextUtils;
import android.util.Log;
import com.android.internal.net.VpnConfig;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
public class SecurityControllerImpl implements SecurityController {
private static final String TAG = "SecurityController";
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
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 final Context mContext;
private final ConnectivityManager mConnectivityManager;
private final IConnectivityManager mConnectivityService = IConnectivityManager.Stub.asInterface(
ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
private final DevicePolicyManager mDevicePolicyManager;
private final ArrayList<VpnCallback> mCallbacks = new ArrayList<VpnCallback>();
private boolean mIsVpnEnabled;
private VpnConfig mVpnConfig;
private String mVpnName;
public SecurityControllerImpl(Context context) {
mContext = context;
mDevicePolicyManager = (DevicePolicyManager)
context.getSystemService(Context.DEVICE_POLICY_SERVICE);
mConnectivityManager = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
// TODO: re-register network callback on user change.
mConnectivityManager.registerNetworkCallback(REQUEST, mNetworkCallback);
}
public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
pw.println("SecurityController state:");
pw.print(" mIsVpnEnabled="); pw.println(mIsVpnEnabled);
pw.print(" mVpnConfig="); pw.println(mVpnConfig);
pw.print(" mVpnName="); pw.println(mVpnName);
}
@Override
public boolean hasDeviceOwner() {
return !TextUtils.isEmpty(mDevicePolicyManager.getDeviceOwner());
}
@Override
public String getDeviceOwnerName() {
return mDevicePolicyManager.getDeviceOwnerName();
}
@Override
public boolean isVpnEnabled() {
// TODO: Remove once using NetworkCallback for updates.
updateState();
return mIsVpnEnabled;
}
@Override
public boolean isLegacyVpn() {
return mVpnConfig.legacy;
}
@Override
public String getVpnApp() {
return mVpnName;
}
@Override
public String getLegacyVpnName() {
return mVpnConfig.session;
}
@Override
public void disconnectFromVpn() {
try {
if (isLegacyVpn()) {
mConnectivityService.prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN);
} else {
// Prevent this app from initiating VPN connections in the future without user
// intervention.
mConnectivityService.setVpnPackageAuthorization(false);
mConnectivityService.prepareVpn(mVpnConfig.user, VpnConfig.LEGACY_VPN);
}
} catch (Exception e) {
Log.e(TAG, "Unable to disconnect from VPN", e);
}
}
@Override
public void addCallback(VpnCallback callback) {
if (callback == null) return;
if (DEBUG) Log.d(TAG, "removeCallback " + callback);
mCallbacks.remove(callback);
}
@Override
public void removeCallback(VpnCallback callback) {
if (callback == null || mCallbacks.contains(callback)) return;
if (DEBUG) Log.d(TAG, "addCallback " + callback);
mCallbacks.add(callback);
}
private void fireCallbacks() {
for (VpnCallback callback : mCallbacks) {
callback.onVpnStateChanged();
}
}
private void updateState() {
try {
mVpnConfig = mConnectivityService.getVpnConfig();
// TODO: Remove once using NetworkCallback for updates.
mIsVpnEnabled = mVpnConfig != null;
if (mVpnConfig != null && !mVpnConfig.legacy) {
mVpnName = VpnConfig.getVpnLabel(mContext, mVpnConfig.user).toString();
}
} catch (RemoteException | NameNotFoundException e) {
Log.w(TAG, "Unable to get current VPN", e);
}
}
private final NetworkCallback mNetworkCallback = new NetworkCallback() {
public void onCapabilitiesChanged(android.net.Network network,
android.net.NetworkCapabilities networkCapabilities) {
if (DEBUG) Log.d(TAG, "onCapabilitiesChanged " + networkCapabilities);
mIsVpnEnabled = networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_VPN);
updateState();
fireCallbacks();
}
};
}