| /* |
| * Copyright (C) 2010 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 android.net; |
| |
| import android.content.Context; |
| import android.net.NetworkInfo.DetailedState; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.INetworkManagementService; |
| import android.os.Message; |
| import android.os.Messenger; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.util.Log; |
| |
| import com.android.server.net.BaseNetworkObserver; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * This class tracks the data connection associated with Ethernet |
| * This is a singleton class and an instance will be created by |
| * ConnectivityService. |
| * @hide |
| */ |
| public class EthernetDataTracker extends BaseNetworkStateTracker { |
| private static final String NETWORKTYPE = "ETHERNET"; |
| private static final String TAG = "Ethernet"; |
| |
| private AtomicBoolean mTeardownRequested = new AtomicBoolean(false); |
| private AtomicBoolean mPrivateDnsRouteSet = new AtomicBoolean(false); |
| private AtomicInteger mDefaultGatewayAddr = new AtomicInteger(0); |
| private AtomicBoolean mDefaultRouteSet = new AtomicBoolean(false); |
| |
| private static boolean mLinkUp; |
| private InterfaceObserver mInterfaceObserver; |
| private String mHwAddr; |
| |
| /* For sending events to connectivity service handler */ |
| private Handler mCsHandler; |
| |
| private static EthernetDataTracker sInstance; |
| private static String sIfaceMatch = ""; |
| private static String mIface = ""; |
| |
| private INetworkManagementService mNMService; |
| |
| private static class InterfaceObserver extends BaseNetworkObserver { |
| private EthernetDataTracker mTracker; |
| |
| InterfaceObserver(EthernetDataTracker tracker) { |
| super(); |
| mTracker = tracker; |
| } |
| |
| @Override |
| public void interfaceStatusChanged(String iface, boolean up) { |
| Log.d(TAG, "Interface status changed: " + iface + (up ? "up" : "down")); |
| } |
| |
| @Override |
| public void interfaceLinkStateChanged(String iface, boolean up) { |
| if (mIface.equals(iface)) { |
| Log.d(TAG, "Interface " + iface + " link " + (up ? "up" : "down")); |
| mLinkUp = up; |
| mTracker.mNetworkInfo.setIsAvailable(up); |
| |
| // use DHCP |
| if (up) { |
| mTracker.reconnect(); |
| } else { |
| mTracker.disconnect(); |
| } |
| } |
| } |
| |
| @Override |
| public void interfaceAdded(String iface) { |
| mTracker.interfaceAdded(iface); |
| } |
| |
| @Override |
| public void interfaceRemoved(String iface) { |
| mTracker.interfaceRemoved(iface); |
| } |
| } |
| |
| private EthernetDataTracker() { |
| mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_ETHERNET, 0, NETWORKTYPE, ""); |
| mLinkProperties = new LinkProperties(); |
| mLinkCapabilities = new LinkCapabilities(); |
| } |
| |
| private void interfaceUpdated() { |
| // we don't get link status indications unless the iface is up - bring it up |
| try { |
| mNMService.setInterfaceUp(mIface); |
| String hwAddr = null; |
| InterfaceConfiguration config = mNMService.getInterfaceConfig(mIface); |
| if (config != null) { |
| hwAddr = config.getHardwareAddress(); |
| } |
| synchronized (this) { |
| mHwAddr = hwAddr; |
| mNetworkInfo.setExtraInfo(mHwAddr); |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Error upping interface " + mIface + ": " + e); |
| } |
| } |
| |
| private void interfaceAdded(String iface) { |
| if (!iface.matches(sIfaceMatch)) |
| return; |
| |
| Log.d(TAG, "Adding " + iface); |
| |
| synchronized(this) { |
| if(!mIface.isEmpty()) |
| return; |
| mIface = iface; |
| } |
| |
| interfaceUpdated(); |
| |
| mNetworkInfo.setIsAvailable(true); |
| Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo); |
| msg.sendToTarget(); |
| } |
| |
| public void disconnect() { |
| |
| NetworkUtils.stopDhcp(mIface); |
| |
| mLinkProperties.clear(); |
| mNetworkInfo.setIsAvailable(false); |
| mNetworkInfo.setDetailedState(DetailedState.DISCONNECTED, null, mHwAddr); |
| |
| Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo); |
| msg.sendToTarget(); |
| |
| msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo); |
| msg.sendToTarget(); |
| |
| IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); |
| INetworkManagementService service = INetworkManagementService.Stub.asInterface(b); |
| try { |
| service.clearInterfaceAddresses(mIface); |
| } catch (Exception e) { |
| Log.e(TAG, "Failed to clear addresses or disable ipv6" + e); |
| } |
| } |
| |
| private void interfaceRemoved(String iface) { |
| if (!iface.equals(mIface)) |
| return; |
| |
| Log.d(TAG, "Removing " + iface); |
| disconnect(); |
| synchronized (this) { |
| mIface = ""; |
| mHwAddr = null; |
| mNetworkInfo.setExtraInfo(null); |
| } |
| } |
| |
| private void runDhcp() { |
| Thread dhcpThread = new Thread(new Runnable() { |
| public void run() { |
| DhcpResults dhcpResults = new DhcpResults(); |
| mNetworkInfo.setDetailedState(DetailedState.OBTAINING_IPADDR, null, mHwAddr); |
| if (!NetworkUtils.runDhcp(mIface, dhcpResults)) { |
| Log.e(TAG, "DHCP request error:" + NetworkUtils.getDhcpError()); |
| mNetworkInfo.setDetailedState(DetailedState.DISCONNECTED, null, mHwAddr); |
| return; |
| } |
| mLinkProperties = dhcpResults.linkProperties; |
| |
| mNetworkInfo.setIsAvailable(true); |
| mNetworkInfo.setDetailedState(DetailedState.CONNECTED, null, mHwAddr); |
| Message msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo); |
| msg.sendToTarget(); |
| } |
| }); |
| dhcpThread.start(); |
| } |
| |
| public static synchronized EthernetDataTracker getInstance() { |
| if (sInstance == null) sInstance = new EthernetDataTracker(); |
| return sInstance; |
| } |
| |
| public Object Clone() throws CloneNotSupportedException { |
| throw new CloneNotSupportedException(); |
| } |
| |
| public void setTeardownRequested(boolean isRequested) { |
| mTeardownRequested.set(isRequested); |
| } |
| |
| public boolean isTeardownRequested() { |
| return mTeardownRequested.get(); |
| } |
| |
| /** |
| * Begin monitoring connectivity |
| */ |
| public void startMonitoring(Context context, Handler target) { |
| mContext = context; |
| mCsHandler = target; |
| |
| // register for notifications from NetworkManagement Service |
| IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); |
| mNMService = INetworkManagementService.Stub.asInterface(b); |
| |
| mInterfaceObserver = new InterfaceObserver(this); |
| |
| // enable and try to connect to an ethernet interface that |
| // already exists |
| sIfaceMatch = context.getResources().getString( |
| com.android.internal.R.string.config_ethernet_iface_regex); |
| try { |
| final String[] ifaces = mNMService.listInterfaces(); |
| for (String iface : ifaces) { |
| if (iface.matches(sIfaceMatch)) { |
| mIface = iface; |
| interfaceUpdated(); |
| |
| // if a DHCP client had previously been started for this interface, then stop it |
| NetworkUtils.stopDhcp(mIface); |
| |
| reconnect(); |
| break; |
| } |
| } |
| } catch (RemoteException e) { |
| Log.e(TAG, "Could not get list of interfaces " + e); |
| } |
| |
| try { |
| mNMService.registerObserver(mInterfaceObserver); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Could not register InterfaceObserver " + e); |
| } |
| } |
| |
| /** |
| * Disable connectivity to a network |
| * TODO: do away with return value after making MobileDataStateTracker async |
| */ |
| public boolean teardown() { |
| mTeardownRequested.set(true); |
| NetworkUtils.stopDhcp(mIface); |
| return true; |
| } |
| |
| /** |
| * Re-enable connectivity to a network after a {@link #teardown()}. |
| */ |
| public boolean reconnect() { |
| if (mLinkUp) { |
| mTeardownRequested.set(false); |
| runDhcp(); |
| } |
| return mLinkUp; |
| } |
| |
| @Override |
| public void captivePortalCheckCompleted(boolean isCaptivePortal) { |
| // not implemented |
| } |
| |
| /** |
| * Turn the wireless radio off for a network. |
| * @param turnOn {@code true} to turn the radio on, {@code false} |
| */ |
| public boolean setRadio(boolean turnOn) { |
| return true; |
| } |
| |
| /** |
| * @return true - If are we currently tethered with another device. |
| */ |
| public synchronized boolean isAvailable() { |
| return mNetworkInfo.isAvailable(); |
| } |
| |
| /** |
| * Tells the underlying networking system that the caller wants to |
| * begin using the named feature. The interpretation of {@code feature} |
| * is completely up to each networking implementation. |
| * @param feature the name of the feature to be used |
| * @param callingPid the process ID of the process that is issuing this request |
| * @param callingUid the user ID of the process that is issuing this request |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is specific to each networking |
| * implementation+feature combination, except that the value {@code -1} |
| * always indicates failure. |
| * TODO: needs to go away |
| */ |
| public int startUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| return -1; |
| } |
| |
| /** |
| * Tells the underlying networking system that the caller is finished |
| * using the named feature. The interpretation of {@code feature} |
| * is completely up to each networking implementation. |
| * @param feature the name of the feature that is no longer needed. |
| * @param callingPid the process ID of the process that is issuing this request |
| * @param callingUid the user ID of the process that is issuing this request |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is specific to each networking |
| * implementation+feature combination, except that the value {@code -1} |
| * always indicates failure. |
| * TODO: needs to go away |
| */ |
| public int stopUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| return -1; |
| } |
| |
| @Override |
| public void setUserDataEnable(boolean enabled) { |
| Log.w(TAG, "ignoring setUserDataEnable(" + enabled + ")"); |
| } |
| |
| @Override |
| public void setPolicyDataEnable(boolean enabled) { |
| Log.w(TAG, "ignoring setPolicyDataEnable(" + enabled + ")"); |
| } |
| |
| /** |
| * Check if private DNS route is set for the network |
| */ |
| public boolean isPrivateDnsRouteSet() { |
| return mPrivateDnsRouteSet.get(); |
| } |
| |
| /** |
| * Set a flag indicating private DNS route is set |
| */ |
| public void privateDnsRouteSet(boolean enabled) { |
| mPrivateDnsRouteSet.set(enabled); |
| } |
| |
| /** |
| * Fetch NetworkInfo for the network |
| */ |
| public synchronized NetworkInfo getNetworkInfo() { |
| return mNetworkInfo; |
| } |
| |
| /** |
| * Fetch LinkProperties for the network |
| */ |
| public synchronized LinkProperties getLinkProperties() { |
| return new LinkProperties(mLinkProperties); |
| } |
| |
| /** |
| * A capability is an Integer/String pair, the capabilities |
| * are defined in the class LinkSocket#Key. |
| * |
| * @return a copy of this connections capabilities, may be empty but never null. |
| */ |
| public LinkCapabilities getLinkCapabilities() { |
| return new LinkCapabilities(mLinkCapabilities); |
| } |
| |
| /** |
| * Fetch default gateway address for the network |
| */ |
| public int getDefaultGatewayAddr() { |
| return mDefaultGatewayAddr.get(); |
| } |
| |
| /** |
| * Check if default route is set |
| */ |
| public boolean isDefaultRouteSet() { |
| return mDefaultRouteSet.get(); |
| } |
| |
| /** |
| * Set a flag indicating default route is set for the network |
| */ |
| public void defaultRouteSet(boolean enabled) { |
| mDefaultRouteSet.set(enabled); |
| } |
| |
| /** |
| * Return the system properties name associated with the tcp buffer sizes |
| * for this network. |
| */ |
| public String getTcpBufferSizesPropName() { |
| return "net.tcp.buffersize.ethernet"; |
| } |
| |
| public void setDependencyMet(boolean met) { |
| // not supported on this network |
| } |
| |
| @Override |
| public void addStackedLink(LinkProperties link) { |
| mLinkProperties.addStackedLink(link); |
| } |
| |
| @Override |
| public void removeStackedLink(LinkProperties link) { |
| mLinkProperties.removeStackedLink(link); |
| } |
| |
| @Override |
| public void supplyMessenger(Messenger messenger) { |
| // not supported on this network |
| } |
| |
| @Override |
| public String getNetworkInterfaceName() { |
| return mIface; |
| } |
| } |