Merge changes I904d87c0,I9ef468a1 (85768e2d) · Commits · e / os / android_frameworks_base

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

+83 −46

Original line number	Diff line number	Diff line
		@@ -5791,6 +5791,19 @@ public class ConnectivityService extends IConnectivityManager.Stub
		return INetd.PERMISSION_NONE;
		}

		private void updateNetworkPermissions(@NonNull final NetworkAgentInfo nai,
		@NonNull final NetworkCapabilities newNc) {
		final int oldPermission = getNetworkPermission(nai.networkCapabilities);
		final int newPermission = getNetworkPermission(newNc);
		if (oldPermission != newPermission && nai.created && !nai.isVPN()) {
		try {
		mNMS.setNetworkPermission(nai.network.netId, newPermission);
		} catch (RemoteException e) {
		loge("Exception in setNetworkPermission: " + e);
		}
		}
		}

		/**
		* Augments the NetworkCapabilities passed in by a NetworkAgent with capabilities that are
		* maintained here that the NetworkAgent is not aware of (e.g., validated, captive portal,
		@@ -5862,21 +5875,11 @@ public class ConnectivityService extends IConnectivityManager.Stub
		* @param nai the network having its capabilities updated.
		* @param nc the new network capabilities.
		*/
		private void updateCapabilities(int oldScore, NetworkAgentInfo nai, NetworkCapabilities nc) {
		private void updateCapabilities(final int oldScore, @NonNull final NetworkAgentInfo nai,
		@NonNull final NetworkCapabilities nc) {
		NetworkCapabilities newNc = mixInCapabilities(nai, nc);

		if (Objects.equals(nai.networkCapabilities, newNc)) return;

		final int oldPermission = getNetworkPermission(nai.networkCapabilities);
		final int newPermission = getNetworkPermission(newNc);
		if (oldPermission != newPermission && nai.created && !nai.isVPN()) {
		try {
		mNMS.setNetworkPermission(nai.network.netId, newPermission);
		} catch (RemoteException e) {
		loge("Exception in setNetworkPermission: " + e);
		}
		}

		updateNetworkPermissions(nai, newNc);
		final NetworkCapabilities prevNc = nai.getAndSetNetworkCapabilities(newNc);

		updateUids(nai, prevNc, newNc);
		@@ -6241,6 +6244,30 @@ public class ConnectivityService extends IConnectivityManager.Stub
		}
		}

		// An accumulator class to gather the list of changes that result from a rematch.
		// TODO : enrich to represent an entire set of changes to apply.
		private static class NetworkReassignment {
		static class NetworkBgStatePair {
		@NonNull final NetworkAgentInfo mNetwork;
		final boolean mOldBackground;
		NetworkBgStatePair(@NonNull final NetworkAgentInfo network,
		final boolean oldBackground) {
		mNetwork = network;
		mOldBackground = oldBackground;
		}
		}

		@NonNull private final Set<NetworkBgStatePair> mRematchedNetworks = new ArraySet<>();

		@NonNull Iterable<NetworkBgStatePair> getRematchedNetworks() {
		return mRematchedNetworks;
		}

		void addRematchedNetwork(@NonNull final NetworkBgStatePair network) {
		mRematchedNetworks.add(network);
		}
		}

		private ArrayMap<NetworkRequestInfo, NetworkAgentInfo> computeRequestReassignmentForNetwork(
		@NonNull final NetworkAgentInfo newNetwork) {
		final int score = newNetwork.getCurrentScore();
		@@ -6286,8 +6313,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
		// needed. A network is needed if it is the best network for
		// one or more NetworkRequests, or if it is a VPN.
		//
		// - Tears down newNetwork if it just became validated
		// but turns out to be unneeded.
		// - Writes into the passed reassignment object all changes that should be done for
		// rematching this network with all requests, to be applied later.
		//
		// NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy,
		// it does not remove NetworkRequests that other Networks could better satisfy.
		@@ -6295,15 +6322,22 @@ public class ConnectivityService extends IConnectivityManager.Stub
		// This function should be used when possible instead of {@code rematchAllNetworksAndRequests}
		// as it performs better by a factor of the number of Networks.
		//
		// TODO : stop writing to the passed reassignment. This is temporarily more useful, but
		// it's unidiomatic Java and it's hard to read.
		//
		// @param changes a currently-building list of changes to write to
		// @param newNetwork is the network to be matched against NetworkRequests.
		// @param now the time the rematch starts, as returned by SystemClock.elapsedRealtime();
		private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, long now) {
		private void rematchNetworkAndRequests(@NonNull final NetworkReassignment changes,
		@NonNull final NetworkAgentInfo newNetwork, final long now) {
		ensureRunningOnConnectivityServiceThread();
		if (!newNetwork.everConnected) return;
		boolean isNewDefault = false;
		NetworkAgentInfo oldDefaultNetwork = null;

		final boolean wasBackgroundNetwork = newNetwork.isBackgroundNetwork();
		changes.addRematchedNetwork(new NetworkReassignment.NetworkBgStatePair(newNetwork,
		newNetwork.isBackgroundNetwork()));

		final int score = newNetwork.getCurrentScore();

		if (VDBG \|\| DDBG) log("rematching " + newNetwork.name());
		@@ -6412,33 +6446,6 @@ public class ConnectivityService extends IConnectivityManager.Stub
		// Notify requested networks are available after the default net is switched, but
		// before LegacyTypeTracker sends legacy broadcasts
		for (NetworkRequestInfo nri : addedRequests) notifyNetworkAvailable(newNetwork, nri);

		// Finally, process listen requests and update capabilities if the background state has
		// changed for this network. For consistency with previous behavior, send onLost callbacks
		// before onAvailable.
		processNewlyLostListenRequests(newNetwork);

		// Maybe the network changed background states. Update its capabilities.
		final boolean backgroundChanged = wasBackgroundNetwork != newNetwork.isBackgroundNetwork();
		if (backgroundChanged) {
		final NetworkCapabilities newNc = mixInCapabilities(newNetwork,
		newNetwork.networkCapabilities);

		final int oldPermission = getNetworkPermission(newNetwork.networkCapabilities);
		final int newPermission = getNetworkPermission(newNc);
		if (oldPermission != newPermission) {
		try {
		mNMS.setNetworkPermission(newNetwork.network.netId, newPermission);
		} catch (RemoteException e) {
		loge("Exception in setNetworkPermission: " + e);
		}
		}

		newNetwork.getAndSetNetworkCapabilities(newNc);
		notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_CAP_CHANGED);
		}

		processNewlySatisfiedListenRequests(newNetwork);
		}

		/**
		@@ -6460,12 +6467,24 @@ public class ConnectivityService extends IConnectivityManager.Stub
		// scoring network and then a higher scoring network, which could produce multiple
		// callbacks.
		Arrays.sort(nais);
		final NetworkReassignment changes = new NetworkReassignment();
		for (final NetworkAgentInfo nai : nais) {
		rematchNetworkAndRequests(nai, now);
		rematchNetworkAndRequests(changes, nai, now);
		}

		final NetworkAgentInfo newDefaultNetwork = getDefaultNetwork();

		for (final NetworkReassignment.NetworkBgStatePair event : changes.getRematchedNetworks()) {
		// Process listen requests and update capabilities if the background state has
		// changed for this network. For consistency with previous behavior, send onLost
		// callbacks before onAvailable.
		processNewlyLostListenRequests(event.mNetwork);
		if (event.mOldBackground != event.mNetwork.isBackgroundNetwork()) {
		applyBackgroundChangeForRematch(event.mNetwork);
		}
		processNewlySatisfiedListenRequests(event.mNetwork);
		}

		for (final NetworkAgentInfo nai : nais) {
		// Rematching may have altered the linger state of some networks, so update all linger
		// timers. updateLingerState reads the state from the network agent and does nothing
		@@ -6497,6 +6516,24 @@ public class ConnectivityService extends IConnectivityManager.Stub
		}
		}

		/**
		* Apply a change in background state resulting from rematching networks with requests.
		*
		* During rematch, a network may change background states by starting to satisfy or stopping
		* to satisfy a foreground request. Listens don't count for this. When a network changes
		* background states, its capabilities need to be updated and callbacks fired for the
		* capability change.
		*
		* @param nai The network that changed background states
		*/
		private void applyBackgroundChangeForRematch(@NonNull final NetworkAgentInfo nai) {
		final NetworkCapabilities newNc = mixInCapabilities(nai, nai.networkCapabilities);
		if (Objects.equals(nai.networkCapabilities, newNc)) return;
		updateNetworkPermissions(nai, newNc);
		nai.getAndSetNetworkCapabilities(newNc);
		notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED);
		}

		private void updateLegacyTypeTrackerAndVpnLockdownForRematch(
		@Nullable final NetworkAgentInfo oldDefaultNetwork,
		@Nullable final NetworkAgentInfo newDefaultNetwork,