Notify network observers of route changes. (c18cbfdf) · Commits · e / os / android_frameworks_base

core/java/android/net/INetworkManagementEventObserver.aidl

+11 −0

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		package android.net;

		import android.net.LinkAddress;
		import android.net.RouteInfo;

		/**
		* Callback class for receiving events from an INetworkManagementService
		@@ -98,4 +99,14 @@ interface INetworkManagementEventObserver {
		* @param servers The IP addresses of the DNS servers.
		*/
		void interfaceDnsServerInfo(String iface, long lifetime, in String[] servers);

		/**
		* A route has been added or updated.
		*/
		void routeUpdated(in RouteInfo route);

		/**
		* A route has been removed.
		*/
		void routeRemoved(in RouteInfo route);
		}

core/java/com/android/server/net/BaseNetworkObserver.java

+11 −0

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

		import android.net.INetworkManagementEventObserver;
		import android.net.LinkAddress;
		import android.net.RouteInfo;

		/**
		* Base {@link INetworkManagementEventObserver} that provides no-op
		@@ -70,4 +71,14 @@ public class BaseNetworkObserver extends INetworkManagementEventObserver.Stub {
		public void interfaceDnsServerInfo(String iface, long lifetime, String[] servers) {
		// default no-op
		}

		@Override
		public void routeUpdated(RouteInfo route) {
		// default no-op
		}

		@Override
		public void routeRemoved(RouteInfo route) {
		// default no-op
		}
		}

core/java/com/android/server/net/NetlinkTracker.java

+35 −0

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

		import android.net.LinkAddress;
		import android.net.LinkProperties;
		import android.net.RouteInfo;
		import android.util.Log;

		/**
		@@ -84,6 +85,12 @@ public class NetlinkTracker extends BaseNetworkObserver {
		}
		}

		private void maybeLog(String operation, Object o) {
		if (DBG) {
		Log.d(TAG, operation + ": " + o.toString());
		}
		}

		@Override
		public void addressUpdated(String iface, LinkAddress address) {
		if (mInterfaceName.equals(iface)) {
		@@ -112,6 +119,34 @@ public class NetlinkTracker extends BaseNetworkObserver {
		}
		}

		@Override
		public void routeUpdated(RouteInfo route) {
		if (mInterfaceName.equals(route.getInterface())) {
		maybeLog("routeUpdated", route);
		boolean changed;
		synchronized (this) {
		changed = mLinkProperties.addRoute(route);
		}
		if (changed) {
		mCallback.update();
		}
		}
		}

		@Override
		public void routeRemoved(RouteInfo route) {
		if (mInterfaceName.equals(route.getInterface())) {
		maybeLog("routeRemoved", route);
		boolean changed;
		synchronized (this) {
		changed = mLinkProperties.removeRoute(route);
		}
		if (changed) {
		mCallback.update();
		}
		}
		}

		/**
		* Returns a copy of this object's LinkProperties.
		*/

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

+65 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@ import android.content.Context;
		import android.net.ConnectivityManager;
		import android.net.INetworkManagementEventObserver;
		import android.net.InterfaceConfiguration;
		import android.net.IpPrefix;
		import android.net.LinkAddress;
		import android.net.NetworkStats;
		import android.net.NetworkUtils;
		@@ -145,6 +146,7 @@ public class NetworkManagementService extends INetworkManagementService.Stub
		public static final int InterfaceClassActivity = 613;
		public static final int InterfaceAddressChange = 614;
		public static final int InterfaceDnsServerInfo = 615;
		public static final int RouteChange = 616;
		}

		static final int DAEMON_MSG_MOBILE_CONN_REAL_TIME_INFO = 1;
		@@ -580,6 +582,28 @@ public class NetworkManagementService extends INetworkManagementService.Stub
		}
		}

		/**
		* Notify our observers of a route change.
		*/
		private void notifyRouteChange(String action, RouteInfo route) {
		final int length = mObservers.beginBroadcast();
		try {
		for (int i = 0; i < length; i++) {
		try {
		if (action.equals("updated")) {
		mObservers.getBroadcastItem(i).routeUpdated(route);
		} else {
		mObservers.getBroadcastItem(i).routeRemoved(route);
		}
		} catch (RemoteException e) {
		} catch (RuntimeException e) {
		}
		}
		} finally {
		mObservers.finishBroadcast();
		}
		}

		//
		// Netd Callback handling
		//
		@@ -722,6 +746,47 @@ public class NetworkManagementService extends INetworkManagementService.Stub
		}
		return true;
		// break;
		case NetdResponseCode.RouteChange:
		/*
		* A route has been updated or removed.
		* Format: "NNN Route <updated\|removed> <dst> [via <gateway] [dev <iface>]"
		*/
		if (!cooked[1].equals("Route") \|\| cooked.length < 6) {
		throw new IllegalStateException(errorMessage);
		}

		String via = null;
		String dev = null;
		boolean valid = true;
		for (int i = 4; (i + 1) < cooked.length && valid; i += 2) {
		if (cooked[i].equals("dev")) {
		if (dev == null) {
		dev = cooked[i+1];
		} else {
		valid = false; // Duplicate interface.
		}
		} else if (cooked[i].equals("via")) {
		if (via == null) {
		via = cooked[i+1];
		} else {
		valid = false; // Duplicate gateway.
		}
		} else {
		valid = false; // Unknown syntax.
		}
		}
		if (valid) {
		try {
		// InetAddress.parseNumericAddress(null) inexplicably returns ::1.
		InetAddress gateway = null;
		if (via != null) gateway = InetAddress.parseNumericAddress(via);
		RouteInfo route = new RouteInfo(new IpPrefix(cooked[3]), gateway, dev);
		notifyRouteChange(cooked[2], route);
		return true;
		} catch (IllegalArgumentException e) {}
		}
		throw new IllegalStateException(errorMessage);
		// break;
		default: break;
		}
		return false;