11c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu/* 21c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Copyright (C) 2014 The Android Open Source Project 31c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * 41c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Licensed under the Apache License, Version 2.0 (the "License"); 51c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * you may not use this file except in compliance with the License. 61c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * You may obtain a copy of the License at 71c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * 81c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * http://www.apache.org/licenses/LICENSE-2.0 91c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * 101c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Unless required by applicable law or agreed to in writing, software 111c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * distributed under the License is distributed on an "AS IS" BASIS, 121c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * See the License for the specific language governing permissions and 141c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * limitations under the License. 151c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 161c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 171c5624a0128397fa6fd6484e6a473bad10547a34Hui Lupackage android.net; 181c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 19a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.content.BroadcastReceiver; 20a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.content.ComponentName; 211c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport android.content.Context; 22a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.content.Intent; 23a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.content.IntentFilter; 24a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.content.ServiceConnection; 25a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.os.Bundle; 261c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport android.os.Handler; 27a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.os.IBinder; 281c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport android.os.Message; 29a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.os.Messenger; 30a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.os.RemoteException; 31a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport android.os.UserHandle; 321c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport android.util.Log; 331c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 341c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport java.net.InetAddress; 351c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport java.net.UnknownHostException; 36a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Luimport java.util.concurrent.atomic.AtomicBoolean; 371c5624a0128397fa6fd6484e6a473bad10547a34Hui Luimport java.util.concurrent.atomic.AtomicInteger; 381c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 391c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu/** 401c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * A data tracker responsible for bringing up and tearing down the system proxy server. 411c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * 421c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * {@hide} 431c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 441c5624a0128397fa6fd6484e6a473bad10547a34Hui Lupublic class ProxyDataTracker extends BaseNetworkStateTracker { 451c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu private static final String TAG = "ProxyDataTracker"; 46a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String NETWORK_TYPE = "PROXY"; 471c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 481c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu // TODO: investigate how to get these DNS addresses from the system. 491c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu private static final String DNS1 = "8.8.8.8"; 501c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu private static final String DNS2 = "8.8.4.4"; 51c80fa71e88bdf932bdde0cea057c3feade73ebd8Hui Lu private static final String INTERFACE_NAME = "ifb0"; 521c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu private static final String REASON_ENABLED = "enabled"; 53a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String REASON_DISABLED = "disabled"; 54a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String REASON_PROXY_DOWN = "proxy_down"; 55a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu 56a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final int MSG_TEAR_DOWN_REQUEST = 1; 57a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final int MSG_SETUP_REQUEST = 2; 581c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 59a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String PERMISSION_PROXY_STATUS_SENDER = 60a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu "android.permission.ACCESS_NETWORK_CONDITIONS"; 61a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String ACTION_PROXY_STATUS_CHANGE = 62a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu "com.android.net.PROXY_STATUS_CHANGE"; 63a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String KEY_IS_PROXY_AVAILABLE = "is_proxy_available"; 64a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String KEY_REPLY_TO_MESSENGER_BINDER = "reply_to_messenger_binder"; 65a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private static final String KEY_REPLY_TO_MESSENGER_BINDER_BUNDLE = 66a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu "reply_to_messenger_binder_bundle"; 67a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu 68a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private Handler mTarget; 69a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private Messenger mProxyStatusService; 70a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private AtomicBoolean mReconnectRequested = new AtomicBoolean(false); 71a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private AtomicBoolean mIsProxyAvailable = new AtomicBoolean(false); 721c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu private final AtomicInteger mDefaultGatewayAddr = new AtomicInteger(0); 73a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu 74a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu private final BroadcastReceiver mProxyStatusServiceListener = new BroadcastReceiver() { 75a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu @Override 76a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu public void onReceive(Context context, Intent intent) { 77a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu if (intent.getAction().equals(ACTION_PROXY_STATUS_CHANGE)) { 78a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mIsProxyAvailable.set(intent.getBooleanExtra(KEY_IS_PROXY_AVAILABLE, false)); 79a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu if (mIsProxyAvailable.get()) { 80a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Bundle bundle = intent.getBundleExtra(KEY_REPLY_TO_MESSENGER_BINDER_BUNDLE); 81a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu if (bundle == null || bundle.getBinder(KEY_REPLY_TO_MESSENGER_BINDER) == null) { 82a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Log.e(TAG, "no messenger binder in the intent to send future requests"); 83a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mIsProxyAvailable.set(false); 84a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu return; 85a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 86a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mProxyStatusService = 87a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu new Messenger(bundle.getBinder(KEY_REPLY_TO_MESSENGER_BINDER)); 88a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu // If there is a pending reconnect request, do it now. 89a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu if (mReconnectRequested.get()) { 90a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu reconnect(); 91a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 92a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } else { 93a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 94a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu REASON_PROXY_DOWN, null); 95a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 96a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } else { 97a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Log.d(TAG, "Unrecognized broadcast intent"); 98a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 99a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 100a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu }; 1011c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 1021c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu /** 1031c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Create a new ProxyDataTracker 1041c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 1051c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu public ProxyDataTracker() { 1061c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_PROXY, 0, NETWORK_TYPE, ""); 1071c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu mLinkProperties = new LinkProperties(); 108f9cb86aebe9647e0fe0137fc198ba16c017445c6Robert Greenwalt mNetworkCapabilities = new NetworkCapabilities(); 109a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mNetworkInfo.setIsAvailable(true); 1101c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu try { 111df2b878ff4e7b4a258588d3a93574c399db78a07Robert Greenwalt mLinkProperties.addDnsServer(InetAddress.getByName(DNS1)); 112df2b878ff4e7b4a258588d3a93574c399db78a07Robert Greenwalt mLinkProperties.addDnsServer(InetAddress.getByName(DNS2)); 113c80fa71e88bdf932bdde0cea057c3feade73ebd8Hui Lu mLinkProperties.setInterfaceName(INTERFACE_NAME); 1141c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } catch (UnknownHostException e) { 115c80fa71e88bdf932bdde0cea057c3feade73ebd8Hui Lu Log.e(TAG, "Could not add DNS address", e); 1161c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1171c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1181c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 119118f04bd9ae8e5e55b114228b4ceee34c85fde1eNick Kralevich @Override 120118f04bd9ae8e5e55b114228b4ceee34c85fde1eNick Kralevich public Object clone() throws CloneNotSupportedException { 1211c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu throw new CloneNotSupportedException(); 1221c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1231c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 124a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu @Override 125a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu public void startMonitoring(Context context, Handler target) { 126a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mContext = context; 127a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mTarget = target; 128a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mContext.registerReceiver(mProxyStatusServiceListener, 129a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu new IntentFilter(ACTION_PROXY_STATUS_CHANGE), 130a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu PERMISSION_PROXY_STATUS_SENDER, 131a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu null); 132a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 133a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu 1341c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu /** 1351c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Disable connectivity to the network. 1361c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 1371c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu public boolean teardown() { 138a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setTeardownRequested(true); 139a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mReconnectRequested.set(false); 140a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu try { 141a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu if (mIsProxyAvailable.get() && mProxyStatusService != null) { 142a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mProxyStatusService.send(Message.obtain(null, MSG_TEAR_DOWN_REQUEST)); 143a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 144a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } catch (RemoteException e) { 145a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Log.e(TAG, "Unable to connect to proxy status service", e); 146a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu return false; 147a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 148a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, REASON_DISABLED, null); 1491c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu return true; 1501c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1511c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 1521c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu /** 1531c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Re-enable proxy data connectivity after a {@link #teardown()}. 1541c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 1551c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu public boolean reconnect() { 156a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mReconnectRequested.set(true); 157a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setTeardownRequested(false); 158a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu if (!mIsProxyAvailable.get()) { 159a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Log.w(TAG, "Reconnect requested even though proxy service is not up. Bailing."); 1601c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu return false; 1611c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 162a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setDetailedState(NetworkInfo.DetailedState.CONNECTING, REASON_ENABLED, null); 1631c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 164a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu try { 165a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu mProxyStatusService.send(Message.obtain(null, MSG_SETUP_REQUEST)); 166a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } catch (RemoteException e) { 167a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Log.e(TAG, "Unable to connect to proxy status service", e); 168a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, REASON_PROXY_DOWN, null); 169a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu return false; 170a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu } 171a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu // We'll assume proxy is set up successfully. If not, a status change broadcast will be 172a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu // received afterwards to indicate any failure. 173a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu setDetailedState(NetworkInfo.DetailedState.CONNECTED, REASON_ENABLED, null); 1741c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu return true; 1751c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1761c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 1771c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu /** 1781c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Fetch default gateway address for the network 1791c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 1801c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu public int getDefaultGatewayAddr() { 1811c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu return mDefaultGatewayAddr.get(); 1821c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1831c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 1841c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu /** 1851c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Return the system properties name associated with the tcp buffer sizes 1861c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * for this network. 1871c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 1881c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu public String getTcpBufferSizesPropName() { 1891c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu return "net.tcp.buffersize.wifi"; 1901c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 1911c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu 1921c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu /** 1931c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * Record the detailed state of a network, and if it is a 1941c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * change from the previous state, send a notification to 1951c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * any listeners. 1961c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * @param state the new @{code DetailedState} 1971c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * @param reason a {@code String} indicating a reason for the state change, 1981c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * if one was supplied. May be {@code null}. 1991c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu * @param extraInfo optional {@code String} providing extra information about the state change 2001c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu */ 2011c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu private void setDetailedState(NetworkInfo.DetailedState state, String reason, 2021c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu String extraInfo) { 2031c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu mNetworkInfo.setDetailedState(state, reason, extraInfo); 204a24bec32bdce3d8de6f722c91ba2a75628f5ba8cHui Lu Message msg = mTarget.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo); 2051c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu msg.sendToTarget(); 2061c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu } 2071c5624a0128397fa6fd6484e6a473bad10547a34Hui Lu} 208