If Internet probe is redirected, pass redirect destination to NetworkAgent. (23243731) · Commits · e / os / android_frameworks_base

core/java/android/net/NetworkAgent.java

+13 −3

Original line number	Diff line number	Diff line
		@@ -120,12 +120,17 @@ public abstract class NetworkAgent extends Handler {
		* either a bad network configuration (no internet link) or captive portal.
		*
		* arg1 = either {@code VALID_NETWORK} or {@code INVALID_NETWORK}
		* obj = Bundle containing map from {@code REDIRECT_URL_KEY} to {@code String}
		* representing URL that Internet probe was redirect to, if it was redirected,
		* or mapping to {@code null} otherwise.
		*/
		public static final int CMD_REPORT_NETWORK_STATUS = BASE + 7;

		public static final int VALID_NETWORK = 1;
		public static final int INVALID_NETWORK = 2;

		public static String REDIRECT_URL_KEY = "redirect URL";

		/**
		* Sent by the NetworkAgent to ConnectivityService to indicate this network was
		* explicitly selected. This should be sent before the NetworkInfo is marked
		@@ -283,11 +288,12 @@ public abstract class NetworkAgent extends Handler {
		break;
		}
		case CMD_REPORT_NETWORK_STATUS: {
		String redirectUrl = ((Bundle)msg.obj).getString(REDIRECT_URL_KEY);
		if (VDBG) {
		log("CMD_REPORT_NETWORK_STATUS(" +
		(msg.arg1 == VALID_NETWORK ? "VALID)" : "INVALID)"));
		(msg.arg1 == VALID_NETWORK ? "VALID, " : "INVALID, ") + redirectUrl);
		}
		networkStatus(msg.arg1);
		networkStatus(msg.arg1, redirectUrl);
		break;
		}
		case CMD_SAVE_ACCEPT_UNVALIDATED: {
		@@ -443,8 +449,12 @@ public abstract class NetworkAgent extends Handler {
		*
		* This may be called multiple times as the network status changes and may
		* generate false negatives if we lose ip connectivity before the link is torn down.
		*
		* @param status one of {@code VALID_NETWORK} or {@code INVALID_NETWORK}.
		* @param redirectUrl If the Internet probe was redirected, this is the destination it was
		* redirected to, otherwise {@code null}.
		*/
		protected void networkStatus(int status) {
		protected void networkStatus(int status, String redirectUrl) {
		}

		/**

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

+11 −5

Original line number	Diff line number	Diff line
		@@ -2025,11 +2025,15 @@ public class ConnectivityService extends IConnectivityManager.Stub
		default:
		return false;
		case NetworkMonitor.EVENT_NETWORK_TESTED: {
		NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
		if (isLiveNetworkAgent(nai, msg.what)) {
		final NetworkAgentInfo nai;
		synchronized (mNetworkForNetId) {
		nai = mNetworkForNetId.get(msg.arg2);
		}
		if (nai != null) {
		final boolean valid =
		(msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID);
		if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed"));
		if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") +
		(msg.obj == null ? "" : " with redirect to " + (String)msg.obj));
		if (valid != nai.lastValidated) {
		final int oldScore = nai.getCurrentScore();
		nai.lastValidated = valid;
		@@ -2040,10 +2044,12 @@ public class ConnectivityService extends IConnectivityManager.Stub
		}
		updateInetCondition(nai);
		// Let the NetworkAgent know the state of its network
		Bundle redirectUrlBundle = new Bundle();
		redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj);
		nai.asyncChannel.sendMessage(
		android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS,
		NetworkAgent.CMD_REPORT_NETWORK_STATUS,
		(valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK),
		0, null);
		0, redirectUrlBundle);
		}
		break;
		}

services/core/java/com/android/server/connectivity/NetworkMonitor.java

+35 −15

Original line number	Diff line number	Diff line
		@@ -120,8 +120,9 @@ public class NetworkMonitor extends StateMachine {

		/**
		* Inform ConnectivityService that the network has been tested.
		* obj = NetworkAgentInfo
		* obj = String representing URL that Internet probe was redirect to, if it was redirected.
		* arg1 = One of the NETWORK_TESTED_RESULT_* constants.
		* arg2 = NetID.
		*/
		public static final int EVENT_NETWORK_TESTED = BASE + 2;

		@@ -334,8 +335,8 @@ public class NetworkMonitor extends StateMachine {
		mDontDisplaySigninNotification = true;
		mUserDoesNotWant = true;
		mConnectivityServiceHandler.sendMessage(obtainMessage(
		EVENT_NETWORK_TESTED, NETWORK_TEST_RESULT_INVALID, 0,
		mNetworkAgentInfo));
		EVENT_NETWORK_TESTED, NETWORK_TEST_RESULT_INVALID,
		mNetworkAgentInfo.network.netId, null));
		// TODO: Should teardown network.
		mUidResponsibleForReeval = 0;
		transitionTo(mEvaluatingState);
		@@ -358,7 +359,7 @@ public class NetworkMonitor extends StateMachine {
		CaptivePortalStateChangeEvent.logEvent(
		CaptivePortalStateChangeEvent.NETWORK_MONITOR_VALIDATED);
		mConnectivityServiceHandler.sendMessage(obtainMessage(EVENT_NETWORK_TESTED,
		NETWORK_TEST_RESULT_VALID, 0, mNetworkAgentInfo));
		NETWORK_TEST_RESULT_VALID, mNetworkAgentInfo.network.netId, null));
		}

		@Override
		@@ -412,6 +413,21 @@ public class NetworkMonitor extends StateMachine {
		}
		}

		/**
		* Result of calling isCaptivePortal().
		* @hide
		*/
		@VisibleForTesting
		public static final class CaptivePortalProbeResult {
		final int mHttpResponseCode; // HTTP response code returned from Internet probe.
		final String mRedirectUrl; // Redirect destination returned from Internet probe.

		public CaptivePortalProbeResult(int httpResponseCode, String redirectUrl) {
		mHttpResponseCode = httpResponseCode;
		mRedirectUrl = redirectUrl;
		}
		}

		// Being in the EvaluatingState State indicates the Network is being evaluated for internet
		// connectivity, or that the user has indicated that this network is unwanted.
		private class EvaluatingState extends State {
		@@ -464,19 +480,23 @@ public class NetworkMonitor extends StateMachine {
		// IPv6) could each take SOCKET_TIMEOUT_MS. During this time this StateMachine
		// will be unresponsive. isCaptivePortal() could be executed on another Thread
		// if this is found to cause problems.
		int httpResponseCode = isCaptivePortal();
		CaptivePortalProbeResult probeResult = isCaptivePortal();
		CaptivePortalCheckResultEvent.logEvent(mNetworkAgentInfo.network.netId,
		httpResponseCode);
		if (httpResponseCode == 204) {
		probeResult.mHttpResponseCode);
		if (probeResult.mHttpResponseCode == 204) {
		transitionTo(mValidatedState);
		} else if (httpResponseCode >= 200 && httpResponseCode <= 399) {
		} else if (probeResult.mHttpResponseCode >= 200 &&
		probeResult.mHttpResponseCode <= 399) {
		mConnectivityServiceHandler.sendMessage(obtainMessage(EVENT_NETWORK_TESTED,
		NETWORK_TEST_RESULT_INVALID, mNetworkAgentInfo.network.netId,
		probeResult.mRedirectUrl));
		transitionTo(mCaptivePortalState);
		} else {
		final Message msg = obtainMessage(CMD_REEVALUATE, ++mReevaluateToken, 0);
		sendMessageDelayed(msg, mReevaluateDelayMs);
		mConnectivityServiceHandler.sendMessage(obtainMessage(
		EVENT_NETWORK_TESTED, NETWORK_TEST_RESULT_INVALID, 0,
		mNetworkAgentInfo));
		EVENT_NETWORK_TESTED, NETWORK_TEST_RESULT_INVALID,
		mNetworkAgentInfo.network.netId, probeResult.mRedirectUrl));
		if (mAttempts >= BLAME_FOR_EVALUATION_ATTEMPTS) {
		// Don't continue to blame UID forever.
		TrafficStats.clearThreadStatsUid();
		@@ -533,8 +553,6 @@ public class NetworkMonitor extends StateMachine {

		@Override
		public void enter() {
		mConnectivityServiceHandler.sendMessage(obtainMessage(EVENT_NETWORK_TESTED,
		NETWORK_TEST_RESULT_INVALID, 0, mNetworkAgentInfo));
		// Don't annoy user with sign-in notifications.
		if (mDontDisplaySigninNotification) return;
		// Create a CustomIntentReceiver that sends us a
		@@ -639,11 +657,12 @@ public class NetworkMonitor extends StateMachine {
		* Returns HTTP response code.
		*/
		@VisibleForTesting
		protected int isCaptivePortal() {
		if (!mIsCaptivePortalCheckEnabled) return 204;
		protected CaptivePortalProbeResult isCaptivePortal() {
		if (!mIsCaptivePortalCheckEnabled) return new CaptivePortalProbeResult(204, null);

		HttpURLConnection urlConnection = null;
		int httpResponseCode = 599;
		String redirectUrl = null;
		try {
		URL url = new URL(getCaptivePortalServerUrl(mContext));
		// On networks with a PAC instead of fetching a URL that should result in a 204
		@@ -699,6 +718,7 @@ public class NetworkMonitor extends StateMachine {
		long requestTimestamp = SystemClock.elapsedRealtime();

		httpResponseCode = urlConnection.getResponseCode();
		redirectUrl = urlConnection.getHeaderField("location");

		// Time how long it takes to get a response to our request
		long responseTimestamp = SystemClock.elapsedRealtime();
		@@ -739,7 +759,7 @@ public class NetworkMonitor extends StateMachine {
		urlConnection.disconnect();
		}
		}
		return httpResponseCode;
		return new CaptivePortalProbeResult(httpResponseCode, redirectUrl);
		}

		/**

services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java

+28 −5

Original line number	Diff line number	Diff line
		@@ -70,6 +70,7 @@ import android.util.LogPrinter;
		import com.android.internal.util.WakeupMessage;
		import com.android.server.connectivity.NetworkAgentInfo;
		import com.android.server.connectivity.NetworkMonitor;
		import com.android.server.connectivity.NetworkMonitor.CaptivePortalProbeResult;
		import com.android.server.net.NetworkPinner;

		import java.net.InetAddress;
		@@ -223,11 +224,15 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		private final NetworkCapabilities mNetworkCapabilities;
		private final IdleableHandlerThread mHandlerThread;
		private final ConditionVariable mDisconnected = new ConditionVariable();
		private final ConditionVariable mNetworkStatusReceived = new ConditionVariable();
		private int mScore;
		private NetworkAgent mNetworkAgent;
		private int mStartKeepaliveError = PacketKeepalive.ERROR_HARDWARE_UNSUPPORTED;
		private int mStopKeepaliveError = PacketKeepalive.NO_KEEPALIVE;
		private Integer mExpectedKeepaliveSlot = null;
		// Contains the redirectUrl from networkStatus(). Before reading, wait for
		// mNetworkStatusReceived.
		private String mRedirectUrl;

		MockNetworkAgent(int transport) {
		final int type = transportToLegacyType(transport);
		@@ -266,6 +271,12 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		public void stopPacketKeepalive(Message msg) {
		onPacketKeepaliveEvent(msg.arg1, mStopKeepaliveError);
		}

		@Override
		public void networkStatus(int status, String redirectUrl) {
		mRedirectUrl = redirectUrl;
		mNetworkStatusReceived.open();
		}
		};
		// Waits for the NetworkAgent to be registered, which includes the creation of the
		// NetworkMonitor.
		@@ -340,13 +351,15 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		if (callback != null) mCm.unregisterNetworkCallback(callback);
		}

		public void connectWithCaptivePortal() {
		public void connectWithCaptivePortal(String redirectUrl) {
		mWrappedNetworkMonitor.gen204ProbeResult = 200;
		mWrappedNetworkMonitor.gen204ProbeRedirectUrl = redirectUrl;
		connect(false);
		waitFor(new Criteria() { public boolean get() {
		NetworkCapabilities caps = mCm.getNetworkCapabilities(getNetwork());
		return caps != null && caps.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL);} });
		mWrappedNetworkMonitor.gen204ProbeResult = 500;
		mWrappedNetworkMonitor.gen204ProbeRedirectUrl = null;
		}

		public void disconnect() {
		@@ -381,6 +394,11 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		public void setExpectedKeepaliveSlot(Integer slot) {
		mExpectedKeepaliveSlot = slot;
		}

		public String waitForRedirectUrl() {
		assertTrue(mNetworkStatusReceived.block(TIMEOUT_MS));
		return mRedirectUrl;
		}
		}

		/**
		@@ -543,6 +561,7 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		private class WrappedNetworkMonitor extends NetworkMonitor {
		// HTTP response code fed back to NetworkMonitor for Internet connectivity probe.
		public int gen204ProbeResult = 500;
		public String gen204ProbeRedirectUrl = null;

		public WrappedNetworkMonitor(Context context, Handler handler,
		NetworkAgentInfo networkAgentInfo, NetworkRequest defaultRequest) {
		@@ -550,8 +569,8 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		}

		@Override
		protected int isCaptivePortal() {
		return gen204ProbeResult;
		protected CaptivePortalProbeResult isCaptivePortal() {
		return new CaptivePortalProbeResult(gen204ProbeResult, gen204ProbeRedirectUrl);
		}

		@Override
		@@ -1344,8 +1363,10 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		// Bring up a network with a captive portal.
		// Expect onAvailable callback of listen for NET_CAPABILITY_CAPTIVE_PORTAL.
		mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
		mWiFiNetworkAgent.connectWithCaptivePortal();
		String firstRedirectUrl = "http://example.com/firstPath";
		mWiFiNetworkAgent.connectWithCaptivePortal(firstRedirectUrl);
		captivePortalCallback.expectCallback(CallbackState.AVAILABLE);
		assertEquals(mWiFiNetworkAgent.waitForRedirectUrl(), firstRedirectUrl);

		// Take down network.
		// Expect onLost callback.
		@@ -1355,8 +1376,10 @@ public class ConnectivityServiceTest extends AndroidTestCase {
		// Bring up a network with a captive portal.
		// Expect onAvailable callback of listen for NET_CAPABILITY_CAPTIVE_PORTAL.
		mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
		mWiFiNetworkAgent.connectWithCaptivePortal();
		String secondRedirectUrl = "http://example.com/secondPath";
		mWiFiNetworkAgent.connectWithCaptivePortal(secondRedirectUrl);
		captivePortalCallback.expectCallback(CallbackState.AVAILABLE);
		assertEquals(mWiFiNetworkAgent.waitForRedirectUrl(), secondRedirectUrl);

		// Make captive portal disappear then revalidate.
		// Expect onLost callback because network no longer provides NET_CAPABILITY_CAPTIVE_PORTAL.