Add BT - DataTracker connection (665e1aed) · Commits · e / os / android_frameworks_base

core/java/android/bluetooth/BluetoothTetheringDataTracker.java

+125 −78

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import android.os.ServiceManager;
		import android.os.INetworkManagementService;
		import android.content.Context;
		import android.net.ConnectivityManager;
		import android.net.DhcpResults;
		import android.net.LinkCapabilities;
		import android.net.LinkProperties;
		import android.net.NetworkInfo;
		@@ -28,7 +29,10 @@ import android.net.NetworkInfo.DetailedState;
		import android.net.NetworkStateTracker;
		import android.net.NetworkUtils;
		import android.os.Handler;
		import android.os.Looper;
		import android.os.Message;
		import android.os.Messenger;
		import android.text.TextUtils;
		import android.util.Log;
		import java.net.InterfaceAddress;
		import android.net.LinkAddress;
		@@ -36,8 +40,11 @@ import android.net.RouteInfo;
		import java.net.Inet4Address;
		import android.os.SystemProperties;

		import com.android.internal.util.AsyncChannel;

		import java.util.concurrent.atomic.AtomicBoolean;
		import java.util.concurrent.atomic.AtomicInteger;
		import java.util.concurrent.atomic.AtomicReference;

		/**
		* This class tracks the data connection associated with Bluetooth
		@@ -51,24 +58,29 @@ public class BluetoothTetheringDataTracker implements NetworkStateTracker {
		private static final String NETWORKTYPE = "BLUETOOTH_TETHER";
		private static final String TAG = "BluetoothTethering";
		private static final boolean DBG = true;
		private static final boolean VDBG = false;
		private static final boolean VDBG = true;

		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 final Object mLinkPropertiesLock = new Object();
		private LinkProperties mLinkProperties;

		private LinkCapabilities mLinkCapabilities;

		private final Object mNetworkInfoLock = new Object();
		private NetworkInfo mNetworkInfo;

		private BluetoothPan mBluetoothPan;
		private static String mIface;
		private Thread mDhcpThread;
		private static String mRevTetheredIface;
		/* For sending events to connectivity service handler */
		private Handler mCsHandler;
		private Context mContext;
		public static BluetoothTetheringDataTracker sInstance;
		protected Context mContext;
		private static BluetoothTetheringDataTracker sInstance;
		private BtdtHandler mBtdtHandler;
		private AtomicReference<AsyncChannel> mAsyncChannel = new AtomicReference<AsyncChannel>(null);

		private BluetoothTetheringDataTracker() {
		mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_BLUETOOTH, 0, NETWORKTYPE, "");
		@@ -108,6 +120,7 @@ public class BluetoothTetheringDataTracker implements NetworkStateTracker {
		if (adapter != null) {
		adapter.getProfileProxy(mContext, mProfileServiceListener, BluetoothProfile.PAN);
		}
		mBtdtHandler = new BtdtHandler(target.getLooper(), this);
		}

		private BluetoothProfile.ServiceListener mProfileServiceListener =
		@@ -224,16 +237,20 @@ public class BluetoothTetheringDataTracker implements NetworkStateTracker {
		/**
		* Fetch NetworkInfo for the network
		*/
		public synchronized NetworkInfo getNetworkInfo() {
		return mNetworkInfo;
		public NetworkInfo getNetworkInfo() {
		synchronized (mNetworkInfoLock) {
		return new NetworkInfo(mNetworkInfo);
		}
		}

		/**
		* Fetch LinkProperties for the network
		*/
		public synchronized LinkProperties getLinkProperties() {
		public LinkProperties getLinkProperties() {
		synchronized (mLinkPropertiesLock) {
		return new LinkProperties(mLinkProperties);
		}
		}

		/**
		* A capability is an Integer/String pair, the capabilities
		@@ -286,88 +303,68 @@ public class BluetoothTetheringDataTracker implements NetworkStateTracker {
		return count;
		}


		private boolean readLinkProperty(String iface) {
		String DhcpPrefix = "dhcp." + iface + ".";
		String ip = SystemProperties.get(DhcpPrefix + "ipaddress");
		String dns1 = SystemProperties.get(DhcpPrefix + "dns1");
		String dns2 = SystemProperties.get(DhcpPrefix + "dns2");
		String gateway = SystemProperties.get(DhcpPrefix + "gateway");
		String mask = SystemProperties.get(DhcpPrefix + "mask");
		if(ip.isEmpty() \|\| gateway.isEmpty()) {
		Log.e(TAG, "readLinkProperty, ip: " + ip + ", gateway: " + gateway + ", can not be empty");
		return false;
		}
		int PrefixLen = countPrefixLength(NetworkUtils.numericToInetAddress(mask).getAddress());
		mLinkProperties.addLinkAddress(new LinkAddress(NetworkUtils.numericToInetAddress(ip), PrefixLen));
		RouteInfo ri = new RouteInfo(NetworkUtils.numericToInetAddress(gateway));
		mLinkProperties.addRoute(ri);
		if(!dns1.isEmpty())
		mLinkProperties.addDns(NetworkUtils.numericToInetAddress(dns1));
		if(!dns2.isEmpty())
		mLinkProperties.addDns(NetworkUtils.numericToInetAddress(dns2));
		mLinkProperties.setInterfaceName(iface);
		return true;
		void startReverseTether(final LinkProperties linkProperties) {
		if (linkProperties == null \|\| TextUtils.isEmpty(linkProperties.getInterfaceName())) {
		Log.e(TAG, "attempted to reverse tether with empty interface");
		return;
		}
		synchronized (mLinkPropertiesLock) {
		if (mLinkProperties.getInterfaceName() != null) {
		Log.e(TAG, "attempted to reverse tether while already in process");
		return;
		}
		public synchronized void startReverseTether(String iface) {
		mIface = iface;
		if (DBG) Log.d(TAG, "startReverseTether mCsHandler: " + mCsHandler);
		mDhcpThread = new Thread(new Runnable() {
		mLinkProperties = linkProperties;
		}
		Thread dhcpThread = new Thread(new Runnable() {
		public void run() {
		//TODO(): Add callbacks for failure and success case.
		//Currently this thread runs independently.
		if (DBG) Log.d(TAG, "startReverseTether mCsHandler: " + mCsHandler);
		String DhcpResultName = "dhcp." + mIface + ".result";;
		String result = "";
		if (VDBG) Log.d(TAG, "waiting for change of sys prop dhcp result: " + DhcpResultName);
		for(int i = 0; i < 30*5; i++) {
		try { Thread.sleep(200); } catch (InterruptedException ie) { return;}
		result = SystemProperties.get(DhcpResultName);
		if (VDBG) Log.d(TAG, "read " + DhcpResultName + ": " + result);
		if(result.equals("failed")) {
		Log.e(TAG, "startReverseTether, failed to start dhcp service");
		DhcpResults dhcpResults = new DhcpResults();
		boolean success = NetworkUtils.runDhcp(linkProperties.getInterfaceName(),
		dhcpResults);
		synchronized (mLinkPropertiesLock) {
		if (linkProperties.getInterfaceName() != mLinkProperties.getInterfaceName()) {
		Log.e(TAG, "obsolete DHCP run aborted");
		return;
		}
		if(result.equals("ok")) {
		if (VDBG) Log.d(TAG, "startReverseTether, dhcp resut: " + result);
		if(readLinkProperty(mIface)) {

		if (!success) {
		Log.e(TAG, "DHCP request error:" + NetworkUtils.getDhcpError());
		return;
		}
		mLinkProperties = dhcpResults.linkProperties;
		synchronized (mNetworkInfoLock) {
		mNetworkInfo.setIsAvailable(true);
		mNetworkInfo.setDetailedState(DetailedState.CONNECTED, null, null);

		if (VDBG) Log.d(TAG, "startReverseTether mCsHandler: " + mCsHandler);
		if (mCsHandler != null) {
		Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo);
		msg.sendToTarget();

		msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo);
		Message msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED,
		new NetworkInfo(mNetworkInfo));
		msg.sendToTarget();
		}
		}
		return;
		}
		}
		Log.e(TAG, "startReverseTether, dhcp failed, resut: " + result);
		}
		});
		mDhcpThread.start();
		dhcpThread.start();
		}

		public synchronized void stopReverseTether() {
		//NetworkUtils.stopDhcp(iface);
		if(mDhcpThread != null && mDhcpThread.isAlive()) {
		mDhcpThread.interrupt();
		try { mDhcpThread.join(); } catch (InterruptedException ie) { return; }
		void stopReverseTether() {
		synchronized (mLinkPropertiesLock) {
		if (TextUtils.isEmpty(mLinkProperties.getInterfaceName())) {
		Log.e(TAG, "attempted to stop reverse tether with nothing tethered");
		return;
		}
		NetworkUtils.stopDhcp(mLinkProperties.getInterfaceName());
		mLinkProperties.clear();
		synchronized (mNetworkInfoLock) {
		mNetworkInfo.setIsAvailable(false);
		mNetworkInfo.setDetailedState(DetailedState.DISCONNECTED, null, null);

		Message msg = mCsHandler.obtainMessage(EVENT_CONFIGURATION_CHANGED, mNetworkInfo);
		msg.sendToTarget();

		msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo);
		msg.sendToTarget();
		if (mCsHandler != null) {
		mCsHandler.obtainMessage(EVENT_STATE_CHANGED, new NetworkInfo(mNetworkInfo)).
		sendToTarget();
		}
		}
		}
		}

		public void setDependencyMet(boolean met) {
		@@ -383,4 +380,54 @@ public class BluetoothTetheringDataTracker implements NetworkStateTracker {
		public void removeStackedLink(LinkProperties link) {
		mLinkProperties.removeStackedLink(link);
		}

		static class BtdtHandler extends Handler {
		private AsyncChannel mStackChannel;
		private final BluetoothTetheringDataTracker mBtdt;

		BtdtHandler(Looper looper, BluetoothTetheringDataTracker parent) {
		super(looper);
		mBtdt = parent;
		}

		@Override
		public void handleMessage(Message msg) {
		switch (msg.what) {
		case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED:
		if (VDBG) Log.d(TAG, "got CMD_CHANNEL_HALF_CONNECTED");
		if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
		AsyncChannel ac = (AsyncChannel)msg.obj;
		if (mBtdt.mAsyncChannel.compareAndSet(null, ac) == false) {
		Log.e(TAG, "Trying to set mAsyncChannel twice!");
		} else {
		ac.sendMessage(
		AsyncChannel.CMD_CHANNEL_FULL_CONNECTION);
		}
		}
		break;
		case AsyncChannel.CMD_CHANNEL_DISCONNECTED:
		if (VDBG) Log.d(TAG, "got CMD_CHANNEL_DISCONNECTED");
		mBtdt.stopReverseTether();
		mBtdt.mAsyncChannel.set(null);
		break;
		case NetworkStateTracker.EVENT_NETWORK_CONNECTED:
		LinkProperties linkProperties = (LinkProperties)(msg.obj);
		if (VDBG) Log.d(TAG, "got EVENT_NETWORK_CONNECTED, " + linkProperties);
		mBtdt.startReverseTether(linkProperties);
		break;
		case NetworkStateTracker.EVENT_NETWORK_DISCONNECTED:
		linkProperties = (LinkProperties)(msg.obj);
		if (VDBG) Log.d(TAG, "got EVENT_NETWORK_DISCONNECTED, " + linkProperties);
		mBtdt.stopReverseTether();
		break;
		}
		}
		}

		@Override
		public void supplyMessenger(Messenger messenger) {
		if (messenger != null) {
		new AsyncChannel().connect(mContext, mBtdtHandler, messenger);
		}
		}
		}

core/java/android/net/BaseNetworkStateTracker.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package android.net;

		import android.content.Context;
		import android.os.Handler;
		import android.os.Messenger;

		import com.android.internal.util.Preconditions;

		@@ -165,4 +166,9 @@ public abstract class BaseNetworkStateTracker implements NetworkStateTracker {
		public void removeStackedLink(LinkProperties link) {
		mLinkProperties.removeStackedLink(link);
		}

		@Override
		public void supplyMessenger(Messenger messenger) {
		// not supported on this network
		}
		}

core/java/android/net/ConnectivityManager.java

+14 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ import android.annotation.SdkConstant.SdkConstantType;
		import android.content.Context;
		import android.os.Binder;
		import android.os.Build.VERSION_CODES;
		import android.os.Messenger;
		import android.os.RemoteException;
		import android.provider.Settings;

		@@ -1280,4 +1281,17 @@ public class ConnectivityManager {
		}
		}

		/**
		* Supply the backend messenger for a network tracker
		*
		* @param type NetworkType to set
		* @param messenger {@link Messenger}
		* {@hide}
		*/
		public void supplyMessenger(int networkType, Messenger messenger) {
		try {
		mService.supplyMessenger(networkType, messenger);
		} catch (RemoteException e) {
		}
		}
		}

core/java/android/net/DummyDataStateTracker.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ package android.net;
		import android.content.Context;
		import android.os.Handler;
		import android.os.Message;
		import android.os.Messenger;
		import android.util.Slog;

		/**
		@@ -213,6 +214,11 @@ public class DummyDataStateTracker implements NetworkStateTracker {
		mLinkProperties.removeStackedLink(link);
		}

		@Override
		public void supplyMessenger(Messenger messenger) {
		// not supported on this network
		}

		static private void log(String s) {
		Slog.d(TAG, s);
		}

core/java/android/net/EthernetDataTracker.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ 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;
		@@ -417,4 +418,9 @@ public class EthernetDataTracker implements NetworkStateTracker {
		public void removeStackedLink(LinkProperties link) {
		mLinkProperties.removeStackedLink(link);
		}

		@Override
		public void supplyMessenger(Messenger messenger) {
		// not supported on this network
		}
		}