Benoit Goby | 1997069 | 2010-12-22 14:29:40 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 android.net; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.net.ConnectivityManager; |
| 21 | import android.net.DhcpInfoInternal; |
| 22 | import android.net.LinkAddress; |
| 23 | import android.net.LinkCapabilities; |
| 24 | import android.net.LinkProperties; |
| 25 | import android.net.NetworkInfo; |
| 26 | import android.net.NetworkInfo.DetailedState; |
| 27 | import android.net.NetworkStateTracker; |
| 28 | import android.net.NetworkUtils; |
| 29 | import android.os.Handler; |
| 30 | import android.os.IBinder; |
| 31 | import android.os.INetworkManagementService; |
| 32 | import android.os.Message; |
| 33 | import android.os.RemoteException; |
| 34 | import android.os.ServiceManager; |
| 35 | import android.util.Log; |
| 36 | |
| 37 | import java.net.InetAddress; |
| 38 | import java.util.concurrent.atomic.AtomicBoolean; |
| 39 | import java.util.concurrent.atomic.AtomicInteger; |
| 40 | |
| 41 | /** |
| 42 | * This class tracks the data connection associated with Ethernet |
| 43 | * This is a singleton class and an instance will be created by |
| 44 | * ConnectivityService. |
| 45 | * @hide |
| 46 | */ |
| 47 | public class EthernetDataTracker implements NetworkStateTracker { |
| 48 | private static final String NETWORKTYPE = "ETHERNET"; |
| 49 | private static final String TAG = "Ethernet"; |
| 50 | |
| 51 | private AtomicBoolean mTeardownRequested = new AtomicBoolean(false); |
| 52 | private AtomicBoolean mPrivateDnsRouteSet = new AtomicBoolean(false); |
| 53 | private AtomicInteger mDefaultGatewayAddr = new AtomicInteger(0); |
| 54 | private AtomicBoolean mDefaultRouteSet = new AtomicBoolean(false); |
| 55 | |
| 56 | private LinkProperties mLinkProperties; |
| 57 | private LinkCapabilities mLinkCapabilities; |
| 58 | private NetworkInfo mNetworkInfo; |
| 59 | private InterfaceObserver mInterfaceObserver; |
| 60 | |
| 61 | /* For sending events to connectivity service handler */ |
| 62 | private Handler mCsHandler; |
| 63 | private Context mContext; |
| 64 | |
| 65 | private static EthernetDataTracker sInstance; |
| 66 | private static String mIface = ""; |
| 67 | |
| 68 | private static class InterfaceObserver extends INetworkManagementEventObserver.Stub { |
| 69 | private EthernetDataTracker mTracker; |
| 70 | |
| 71 | InterfaceObserver(EthernetDataTracker tracker) { |
| 72 | super(); |
| 73 | mTracker = tracker; |
| 74 | } |
| 75 | |
| 76 | public void interfaceLinkStatusChanged(String iface, boolean up) { |
| 77 | Log.d(TAG, "Interface " + iface + " link " + (up ? "up" : "down")); |
| 78 | } |
| 79 | |
| 80 | public void interfaceAdded(String iface) { |
| 81 | mTracker.interfaceAdded(iface); |
| 82 | } |
| 83 | |
| 84 | public void interfaceRemoved(String iface) { |
| 85 | mTracker.interfaceRemoved(iface); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | private EthernetDataTracker() { |
| 90 | mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_ETHERNET, 0, NETWORKTYPE, ""); |
| 91 | mLinkProperties = new LinkProperties(); |
| 92 | mLinkCapabilities = new LinkCapabilities(); |
| 93 | |
| 94 | mNetworkInfo.setIsAvailable(false); |
| 95 | setTeardownRequested(false); |
| 96 | } |
| 97 | |
| 98 | private void interfaceAdded(String iface) { |
| 99 | if (!iface.matches("eth\\d")) |
| 100 | return; |
| 101 | |
| 102 | Log.d(TAG, "Adding " + iface); |
| 103 | |
| 104 | synchronized(mIface) { |
| 105 | if(!mIface.isEmpty()) |
| 106 | return; |
| 107 | mIface = iface; |
| 108 | } |
| 109 | |
| 110 | mNetworkInfo.setIsAvailable(true); |
| 111 | Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo); |
| 112 | msg.sendToTarget(); |
| 113 | |
| 114 | runDhcp(); |
| 115 | } |
| 116 | |
| 117 | private void interfaceRemoved(String iface) { |
| 118 | if (!iface.equals(mIface)) |
| 119 | return; |
| 120 | |
| 121 | Log.d(TAG, "Removing " + iface); |
| 122 | |
| 123 | NetworkUtils.stopDhcp(mIface); |
| 124 | |
| 125 | mLinkProperties.clear(); |
| 126 | mNetworkInfo.setIsAvailable(false); |
| 127 | mNetworkInfo.setDetailedState(DetailedState.DISCONNECTED, null, null); |
| 128 | |
| 129 | Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo); |
| 130 | msg.sendToTarget(); |
| 131 | |
| 132 | msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo); |
| 133 | msg.sendToTarget(); |
| 134 | |
| 135 | mIface = ""; |
| 136 | } |
| 137 | |
| 138 | private void runDhcp() { |
| 139 | Thread dhcpThread = new Thread(new Runnable() { |
| 140 | public void run() { |
| 141 | DhcpInfoInternal dhcpInfoInternal = new DhcpInfoInternal(); |
| 142 | if (!NetworkUtils.runDhcp(mIface, dhcpInfoInternal)) { |
| 143 | Log.e(TAG, "DHCP request error:" + NetworkUtils.getDhcpError()); |
| 144 | return; |
| 145 | } |
| 146 | mLinkProperties = dhcpInfoInternal.makeLinkProperties(); |
| 147 | mLinkProperties.setInterfaceName(mIface); |
| 148 | |
| 149 | mNetworkInfo.setDetailedState(DetailedState.CONNECTED, null, null); |
| 150 | Message msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo); |
| 151 | msg.sendToTarget(); |
| 152 | } |
| 153 | }); |
| 154 | dhcpThread.start(); |
| 155 | } |
| 156 | |
| 157 | public static synchronized EthernetDataTracker getInstance() { |
| 158 | if (sInstance == null) sInstance = new EthernetDataTracker(); |
| 159 | return sInstance; |
| 160 | } |
| 161 | |
| 162 | public Object Clone() throws CloneNotSupportedException { |
| 163 | throw new CloneNotSupportedException(); |
| 164 | } |
| 165 | |
| 166 | public void setTeardownRequested(boolean isRequested) { |
| 167 | mTeardownRequested.set(isRequested); |
| 168 | } |
| 169 | |
| 170 | public boolean isTeardownRequested() { |
| 171 | return mTeardownRequested.get(); |
| 172 | } |
| 173 | |
| 174 | /** |
| 175 | * Begin monitoring connectivity |
| 176 | */ |
| 177 | public void startMonitoring(Context context, Handler target) { |
| 178 | mContext = context; |
| 179 | mCsHandler = target; |
| 180 | |
| 181 | // register for notifications from NetworkManagement Service |
| 182 | IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); |
| 183 | INetworkManagementService service = INetworkManagementService.Stub.asInterface(b); |
| 184 | mInterfaceObserver = new InterfaceObserver(this); |
| 185 | try { |
| 186 | service.registerObserver(mInterfaceObserver); |
| 187 | } catch (RemoteException e) { |
| 188 | Log.e(TAG, "Could not register InterfaceObserver " + e); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Disable connectivity to a network |
| 194 | * TODO: do away with return value after making MobileDataStateTracker async |
| 195 | */ |
| 196 | public boolean teardown() { |
| 197 | mTeardownRequested.set(true); |
| 198 | NetworkUtils.stopDhcp(mIface); |
| 199 | return true; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Re-enable connectivity to a network after a {@link #teardown()}. |
| 204 | */ |
| 205 | public boolean reconnect() { |
| 206 | mTeardownRequested.set(false); |
| 207 | runDhcp(); |
| 208 | return true; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Turn the wireless radio off for a network. |
| 213 | * @param turnOn {@code true} to turn the radio on, {@code false} |
| 214 | */ |
| 215 | public boolean setRadio(boolean turnOn) { |
| 216 | return true; |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * @return true - If are we currently tethered with another device. |
| 221 | */ |
| 222 | public synchronized boolean isAvailable() { |
| 223 | return mNetworkInfo.isAvailable(); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Tells the underlying networking system that the caller wants to |
| 228 | * begin using the named feature. The interpretation of {@code feature} |
| 229 | * is completely up to each networking implementation. |
| 230 | * @param feature the name of the feature to be used |
| 231 | * @param callingPid the process ID of the process that is issuing this request |
| 232 | * @param callingUid the user ID of the process that is issuing this request |
| 233 | * @return an integer value representing the outcome of the request. |
| 234 | * The interpretation of this value is specific to each networking |
| 235 | * implementation+feature combination, except that the value {@code -1} |
| 236 | * always indicates failure. |
| 237 | * TODO: needs to go away |
| 238 | */ |
| 239 | public int startUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| 240 | return -1; |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Tells the underlying networking system that the caller is finished |
| 245 | * using the named feature. The interpretation of {@code feature} |
| 246 | * is completely up to each networking implementation. |
| 247 | * @param feature the name of the feature that is no longer needed. |
| 248 | * @param callingPid the process ID of the process that is issuing this request |
| 249 | * @param callingUid the user ID of the process that is issuing this request |
| 250 | * @return an integer value representing the outcome of the request. |
| 251 | * The interpretation of this value is specific to each networking |
| 252 | * implementation+feature combination, except that the value {@code -1} |
| 253 | * always indicates failure. |
| 254 | * TODO: needs to go away |
| 255 | */ |
| 256 | public int stopUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| 257 | return -1; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * @param enabled |
| 262 | */ |
| 263 | public void setDataEnable(boolean enabled) { |
| 264 | Log.d(TAG, "setDataEnabled: IGNORING enabled=" + enabled); |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * Check if private DNS route is set for the network |
| 269 | */ |
| 270 | public boolean isPrivateDnsRouteSet() { |
| 271 | return mPrivateDnsRouteSet.get(); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Set a flag indicating private DNS route is set |
| 276 | */ |
| 277 | public void privateDnsRouteSet(boolean enabled) { |
| 278 | mPrivateDnsRouteSet.set(enabled); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Fetch NetworkInfo for the network |
| 283 | */ |
| 284 | public synchronized NetworkInfo getNetworkInfo() { |
| 285 | return mNetworkInfo; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Fetch LinkProperties for the network |
| 290 | */ |
| 291 | public synchronized LinkProperties getLinkProperties() { |
| 292 | return new LinkProperties(mLinkProperties); |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * A capability is an Integer/String pair, the capabilities |
| 297 | * are defined in the class LinkSocket#Key. |
| 298 | * |
| 299 | * @return a copy of this connections capabilities, may be empty but never null. |
| 300 | */ |
| 301 | public LinkCapabilities getLinkCapabilities() { |
| 302 | return new LinkCapabilities(mLinkCapabilities); |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Fetch default gateway address for the network |
| 307 | */ |
| 308 | public int getDefaultGatewayAddr() { |
| 309 | return mDefaultGatewayAddr.get(); |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Check if default route is set |
| 314 | */ |
| 315 | public boolean isDefaultRouteSet() { |
| 316 | return mDefaultRouteSet.get(); |
| 317 | } |
| 318 | |
| 319 | /** |
| 320 | * Set a flag indicating default route is set for the network |
| 321 | */ |
| 322 | public void defaultRouteSet(boolean enabled) { |
| 323 | mDefaultRouteSet.set(enabled); |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * Return the system properties name associated with the tcp buffer sizes |
| 328 | * for this network. |
| 329 | */ |
| 330 | public String getTcpBufferSizesPropName() { |
| 331 | return "net.tcp.buffersize.wifi"; |
| 332 | } |
Robert Greenwalt | af6eddb | 2011-04-07 15:44:10 -0700 | [diff] [blame^] | 333 | |
| 334 | public void setDependencyMet(boolean met) { |
| 335 | // not supported on this network |
| 336 | } |
Benoit Goby | 1997069 | 2010-12-22 14:29:40 -0800 | [diff] [blame] | 337 | } |