| /* |
| * Copyright (C) 2021 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.server.wifi; |
| |
| import android.content.Context; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkFactory; |
| import android.net.NetworkRequest; |
| import android.os.Looper; |
| import android.util.ArraySet; |
| import android.util.Log; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.Set; |
| |
| /** |
| * Network factory to handle restricted wifi network requests. |
| * @see android.net.wifi.WifiNetworkSuggestion.Builder#setRestricted(boolean) |
| */ |
| public class RestrictedWifiNetworkFactory extends NetworkFactory { |
| private static final String TAG = "RestrictedWifiNetworkFactory"; |
| private static final int SCORE_FILTER = Integer.MAX_VALUE; |
| |
| private final WifiConnectivityManager mWifiConnectivityManager; |
| private Set<Integer> mRequestUids = new ArraySet<>(); |
| |
| public RestrictedWifiNetworkFactory(Looper l, Context c, NetworkCapabilities f, |
| WifiConnectivityManager connectivityManager) { |
| super(l, c, TAG, f); |
| mWifiConnectivityManager = connectivityManager; |
| |
| setScoreFilter(SCORE_FILTER); |
| } |
| |
| @Override |
| protected void needNetworkFor(NetworkRequest networkRequest) { |
| if (!networkRequest.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)) { |
| if (mRequestUids.add(networkRequest.getRequestorUid())) { |
| mWifiConnectivityManager.addRestrictionConnectionAllowedUid(networkRequest |
| .getRequestorUid()); |
| } |
| } |
| } |
| |
| @Override |
| protected void releaseNetworkFor(NetworkRequest networkRequest) { |
| if (!networkRequest.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)) { |
| if (mRequestUids.size() == 0) { |
| Log.e(TAG, "No valid network request to release"); |
| return; |
| } |
| if (mRequestUids.remove(networkRequest.getRequestorUid())) { |
| mWifiConnectivityManager.removeRestrictionConnectionAllowedUid(networkRequest |
| .getRequestorUid()); |
| } |
| } |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| super.dump(fd, pw, args); |
| pw.println(TAG + ": mConnectionReqCount " + mRequestUids.size()); |
| } |
| |
| /** |
| * Check if there is at-least one connection request. |
| */ |
| public boolean hasConnectionRequests() { |
| return mRequestUids.size() > 0; |
| } |
| } |
| |