1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.connectivity; 18 19 import android.content.Context; 20 import android.net.LinkProperties; 21 import android.net.Network; 22 import android.net.NetworkCapabilities; 23 import android.net.NetworkInfo; 24 import android.net.NetworkMisc; 25 import android.net.NetworkRequest; 26 import android.os.Handler; 27 import android.os.Messenger; 28 import android.util.SparseArray; 29 30 import com.android.internal.util.AsyncChannel; 31 import com.android.server.connectivity.NetworkMonitor; 32 33 import java.util.ArrayList; 34 35 /** 36 * A bag class used by ConnectivityService for holding a collection of most recent 37 * information published by a particular NetworkAgent as well as the 38 * AsyncChannel/messenger for reaching that NetworkAgent and lists of NetworkRequests 39 * interested in using it. 40 */ 41 public class NetworkAgentInfo { 42 public NetworkInfo networkInfo; 43 public Network network; 44 public LinkProperties linkProperties; 45 public NetworkCapabilities networkCapabilities; 46 public final NetworkMonitor networkMonitor; 47 public final NetworkMisc networkMisc; 48 public boolean created; 49 public boolean validated; 50 51 // This represents the last score received from the NetworkAgent. 52 private int currentScore; 53 // Penalty applied to scores of Networks that have not been validated. 54 private static final int UNVALIDATED_SCORE_PENALTY = 40; 55 56 // Score for explicitly connected network. 57 private static final int EXPLICITLY_SELECTED_NETWORK_SCORE = 100; 58 59 // The list of NetworkRequests being satisfied by this Network. 60 public final SparseArray<NetworkRequest> networkRequests = new SparseArray<NetworkRequest>(); 61 public final ArrayList<NetworkRequest> networkLingered = new ArrayList<NetworkRequest>(); 62 63 public final Messenger messenger; 64 public final AsyncChannel asyncChannel; 65 66 public NetworkAgentInfo(Messenger messenger, AsyncChannel ac, NetworkInfo info, 67 LinkProperties lp, NetworkCapabilities nc, int score, Context context, Handler handler, 68 NetworkMisc misc) { 69 this.messenger = messenger; 70 asyncChannel = ac; 71 network = null; 72 networkInfo = info; 73 linkProperties = lp; 74 networkCapabilities = nc; 75 currentScore = score; 76 networkMonitor = new NetworkMonitor(context, handler, this); 77 networkMisc = misc; 78 created = false; 79 validated = false; 80 } 81 82 public void addRequest(NetworkRequest networkRequest) { 83 networkRequests.put(networkRequest.requestId, networkRequest); 84 } 85 86 public boolean isVPN() { 87 return networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_VPN); 88 } 89 90 // Get the current score for this Network. This may be modified from what the 91 // NetworkAgent sent, as it has modifiers applied to it. 92 public int getCurrentScore() { 93 // TODO: We may want to refactor this into a NetworkScore class that takes a base score from 94 // the NetworkAgent and signals from the NetworkAgent and uses those signals to modify the 95 // score. The NetworkScore class would provide a nice place to centralize score constants 96 // so they are not scattered about the transports. 97 98 int score = currentScore; 99 100 if (!validated) score -= UNVALIDATED_SCORE_PENALTY; 101 if (score < 0) score = 0; 102 103 if (networkMisc.explicitlySelected) score = EXPLICITLY_SELECTED_NETWORK_SCORE; 104 105 return score; 106 } 107 108 public void setCurrentScore(int newScore) { 109 currentScore = newScore; 110 } 111 112 public String toString() { 113 return "NetworkAgentInfo{ ni{" + networkInfo + "} network{" + 114 network + "} lp{" + 115 linkProperties + "} nc{" + 116 networkCapabilities + "} Score{" + getCurrentScore() + "} " + 117 "validated{" + validated + "} created{" + created + "} " + 118 "explicitlySelected{" + networkMisc.explicitlySelected + "} }"; 119 } 120 121 public String name() { 122 return "NetworkAgentInfo [" + networkInfo.getTypeName() + " (" + 123 networkInfo.getSubtypeName() + ") - " + 124 (network == null ? "null" : network.toString()) + "]"; 125 } 126 } 127