Merge "Delete the EthernetDataTracker." (f1cc1295) · Commits · e / os / android_frameworks_base

core/java/android/net/EthernetDataTracker.java

deleted100644 → 0

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	/*
	* 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();
	mNetworkCapabilities = new NetworkCapabilities();
	}

	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);
	}

	/**
	* 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;
	}
	}

services/core/java/com/android/server/ConnectivityService.java

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