Merge "Merge changes I3b769562,I63203188,Ia9396d66,Ifec34fad am: 20bfe66a02... (0da336ab) · Commits · e / os / android_frameworks_base

core/java/android/net/vcn/IVcnManagementService.aidl

+1 −1

Original line number	Diff line number	Diff line
		@@ -23,6 +23,6 @@ import android.os.ParcelUuid;
		* @hide
		*/
		interface IVcnManagementService {
		void setVcnConfig(in ParcelUuid subscriptionGroup, in VcnConfig config);
		void setVcnConfig(in ParcelUuid subscriptionGroup, in VcnConfig config, in String opPkgName);
		void clearVcnConfig(in ParcelUuid subscriptionGroup);
		}

core/java/android/net/vcn/VcnConfig.java

+37 −6

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ import static com.android.internal.annotations.VisibleForTesting.Visibility;

		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.content.Context;
		import android.os.Parcel;
		import android.os.Parcelable;
		import android.os.PersistableBundle;
		@@ -45,11 +46,17 @@ import java.util.Set;
		public final class VcnConfig implements Parcelable {
		@NonNull private static final String TAG = VcnConfig.class.getSimpleName();

		private static final String PACKAGE_NAME_KEY = "mPackageName";
		@NonNull private final String mPackageName;

		private static final String GATEWAY_CONNECTION_CONFIGS_KEY = "mGatewayConnectionConfigs";
		@NonNull private final Set<VcnGatewayConnectionConfig> mGatewayConnectionConfigs;

		private VcnConfig(@NonNull Set<VcnGatewayConnectionConfig> tunnelConfigs) {
		mGatewayConnectionConfigs = Collections.unmodifiableSet(tunnelConfigs);
		private VcnConfig(
		@NonNull String packageName,
		@NonNull Set<VcnGatewayConnectionConfig> gatewayConnectionConfigs) {
		mPackageName = packageName;
		mGatewayConnectionConfigs = Collections.unmodifiableSet(gatewayConnectionConfigs);

		validate();
		}
		@@ -61,6 +68,8 @@ public final class VcnConfig implements Parcelable {
		*/
		@VisibleForTesting(visibility = Visibility.PRIVATE)
		public VcnConfig(@NonNull PersistableBundle in) {
		mPackageName = in.getString(PACKAGE_NAME_KEY);

		final PersistableBundle gatewayConnectionConfigsBundle =
		in.getPersistableBundle(GATEWAY_CONNECTION_CONFIGS_KEY);
		mGatewayConnectionConfigs =
		@@ -72,8 +81,19 @@ public final class VcnConfig implements Parcelable {
		}

		private void validate() {
		Objects.requireNonNull(mPackageName, "packageName was null");
		Preconditions.checkCollectionNotEmpty(
		mGatewayConnectionConfigs, "gatewayConnectionConfigs");
		mGatewayConnectionConfigs, "gatewayConnectionConfigs was empty");
		}

		/**
		* Retrieve the package name of the provisioning app.
		*
		* @hide
		*/
		@NonNull
		public String getProvisioningPackageName() {
		return mPackageName;
		}

		/** Retrieves the set of configured tunnels. */
		@@ -91,6 +111,8 @@ public final class VcnConfig implements Parcelable {
		public PersistableBundle toPersistableBundle() {
		final PersistableBundle result = new PersistableBundle();

		result.putString(PACKAGE_NAME_KEY, mPackageName);

		final PersistableBundle gatewayConnectionConfigsBundle =
		PersistableBundleUtils.fromList(
		new ArrayList<>(mGatewayConnectionConfigs),
		@@ -102,7 +124,7 @@ public final class VcnConfig implements Parcelable {

		@Override
		public int hashCode() {
		return Objects.hash(mGatewayConnectionConfigs);
		return Objects.hash(mPackageName, mGatewayConnectionConfigs);
		}

		@Override
		@@ -112,7 +134,8 @@ public final class VcnConfig implements Parcelable {
		}

		final VcnConfig rhs = (VcnConfig) other;
		return mGatewayConnectionConfigs.equals(rhs.mGatewayConnectionConfigs);
		return mPackageName.equals(rhs.mPackageName)
		&& mGatewayConnectionConfigs.equals(rhs.mGatewayConnectionConfigs);
		}

		// Parcelable methods
		@@ -143,9 +166,17 @@ public final class VcnConfig implements Parcelable {

		/** This class is used to incrementally build {@link VcnConfig} objects. */
		public static class Builder {
		@NonNull private final String mPackageName;

		@NonNull
		private final Set<VcnGatewayConnectionConfig> mGatewayConnectionConfigs = new ArraySet<>();

		public Builder(@NonNull Context context) {
		Objects.requireNonNull(context, "context was null");

		mPackageName = context.getOpPackageName();
		}

		/**
		* Adds a configuration for an individual gateway connection.
		*
		@@ -168,7 +199,7 @@ public final class VcnConfig implements Parcelable {
		*/
		@NonNull
		public VcnConfig build() {
		return new VcnConfig(mGatewayConnectionConfigs);
		return new VcnConfig(mPackageName, mGatewayConnectionConfigs);
		}
		}
		}

core/java/android/net/vcn/VcnManager.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -101,7 +101,7 @@ public final class VcnManager {
		requireNonNull(config, "config was null");

		try {
		mService.setVcnConfig(subscriptionGroup, config);
		mService.setVcnConfig(subscriptionGroup, config, mContext.getOpPackageName());
		} catch (ServiceSpecificException e) {
		throw new IOException(e);
		} catch (RemoteException e) {

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

+167 −32

Original line number	Diff line number	Diff line
		@@ -16,13 +16,15 @@

		package com.android.server;

		import static com.android.server.vcn.TelephonySubscriptionTracker.TelephonySubscriptionSnapshot;
		import static com.android.server.vcn.TelephonySubscriptionTracker.TelephonySubscriptionTrackerCallback;

		import static java.util.Objects.requireNonNull;

		import android.annotation.NonNull;
		import android.app.AppOpsManager;
		import android.content.Context;
		import android.net.ConnectivityManager;
		import android.net.NetworkProvider;
		import android.net.NetworkRequest;
		import android.net.vcn.IVcnManagementService;
		import android.net.vcn.VcnConfig;
		import android.os.Binder;
		@@ -43,6 +45,10 @@ import android.util.Slog;
		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.annotations.VisibleForTesting.Visibility;
		import com.android.server.vcn.TelephonySubscriptionTracker;
		import com.android.server.vcn.Vcn;
		import com.android.server.vcn.VcnContext;
		import com.android.server.vcn.VcnNetworkProvider;
		import com.android.server.vcn.util.PersistableBundleUtils;

		import java.io.IOException;
		@@ -51,6 +57,7 @@ import java.util.Collections;
		import java.util.List;
		import java.util.Map;
		import java.util.Map.Entry;
		import java.util.concurrent.TimeUnit;

		/**
		* VcnManagementService manages Virtual Carrier Network profiles and lifecycles.
		@@ -115,6 +122,10 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		@VisibleForTesting(visibility = Visibility.PRIVATE)
		static final String VCN_CONFIG_FILE = "/data/system/vcn/configs.xml";

		// TODO(b/176956496): Directly use CarrierServiceBindHelper.UNBIND_DELAY_MILLIS
		@VisibleForTesting(visibility = Visibility.PRIVATE)
		static final long CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS = TimeUnit.SECONDS.toMillis(30);

		/* Binder context for this service */
		@NonNull private final Context mContext;
		@NonNull private final Dependencies mDeps;
		@@ -122,11 +133,23 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		@NonNull private final Looper mLooper;
		@NonNull private final Handler mHandler;
		@NonNull private final VcnNetworkProvider mNetworkProvider;
		@NonNull private final TelephonySubscriptionTrackerCallback mTelephonySubscriptionTrackerCb;
		@NonNull private final TelephonySubscriptionTracker mTelephonySubscriptionTracker;
		@NonNull private final VcnContext mVcnContext;

		@GuardedBy("mLock")
		@NonNull
		private final Map<ParcelUuid, VcnConfig> mConfigs = new ArrayMap<>();

		@GuardedBy("mLock")
		@NonNull
		private final Map<ParcelUuid, Vcn> mVcns = new ArrayMap<>();

		@GuardedBy("mLock")
		@NonNull
		private TelephonySubscriptionSnapshot mLastSnapshot =
		TelephonySubscriptionSnapshot.EMPTY_SNAPSHOT;

		@NonNull private final Object mLock = new Object();

		@NonNull private final PersistableBundleUtils.LockingReadWriteHelper mConfigDiskRwHelper;
		@@ -139,8 +162,12 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		mLooper = mDeps.getLooper();
		mHandler = new Handler(mLooper);
		mNetworkProvider = new VcnNetworkProvider(mContext, mLooper);
		mTelephonySubscriptionTrackerCb = new VcnSubscriptionTrackerCallback();
		mTelephonySubscriptionTracker = mDeps.newTelephonySubscriptionTracker(
		mContext, mLooper, mTelephonySubscriptionTrackerCb);

		mConfigDiskRwHelper = mDeps.newPersistableBundleLockingReadWriteHelper(VCN_CONFIG_FILE);
		mVcnContext = mDeps.newVcnContext(mContext, mLooper, mNetworkProvider);

		// Run on handler to ensure I/O does not block system server startup
		mHandler.post(() -> {
		@@ -174,7 +201,10 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		mConfigs.put(entry.getKey(), entry.getValue());
		}
		}
		// TODO: Trigger re-evaluation of active VCNs; start/stop VCNs as needed.

		// Re-evaluate subscriptions, and start/stop VCNs. This starts with an empty
		// snapshot, and therefore safe even before telephony subscriptions are loaded.
		mTelephonySubscriptionTrackerCb.onNewSnapshot(mLastSnapshot);
		}
		}
		});
		@@ -203,6 +233,14 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		return mHandlerThread.getLooper();
		}

		/** Creates a new VcnInstance using the provided configuration */
		public TelephonySubscriptionTracker newTelephonySubscriptionTracker(
		@NonNull Context context,
		@NonNull Looper looper,
		@NonNull TelephonySubscriptionTrackerCallback callback) {
		return new TelephonySubscriptionTracker(context, new Handler(looper), callback);
		}

		/**
		* Retrieves the caller's UID
		*
		@@ -225,12 +263,29 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		newPersistableBundleLockingReadWriteHelper(@NonNull String path) {
		return new PersistableBundleUtils.LockingReadWriteHelper(path);
		}

		/** Creates a new VcnContext */
		public VcnContext newVcnContext(
		@NonNull Context context,
		@NonNull Looper looper,
		@NonNull VcnNetworkProvider vcnNetworkProvider) {
		return new VcnContext(context, looper, vcnNetworkProvider);
		}

		/** Creates a new Vcn instance using the provided configuration */
		public Vcn newVcn(
		@NonNull VcnContext vcnContext,
		@NonNull ParcelUuid subscriptionGroup,
		@NonNull VcnConfig config) {
		return new Vcn(vcnContext, subscriptionGroup, config);
		}
		}

		/** Notifies the VcnManagementService that external dependencies can be set up. */
		public void systemReady() {
		mContext.getSystemService(ConnectivityManager.class)
		.registerNetworkProvider(mNetworkProvider);
		mTelephonySubscriptionTracker.register();
		}

		private void enforcePrimaryUser() {
		@@ -277,27 +332,112 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		"Carrier privilege required for subscription group to set VCN Config");
		}

		private class VcnSubscriptionTrackerCallback implements TelephonySubscriptionTrackerCallback {
		/**
		* Handles subscription group changes, as notified by {@link TelephonySubscriptionTracker}
		*
		* <p>Start any unstarted VCN instances
		*
		* @hide
		*/
		public void onNewSnapshot(@NonNull TelephonySubscriptionSnapshot snapshot) {
		// Startup VCN instances
		synchronized (mLock) {
		mLastSnapshot = snapshot;

		// Start any VCN instances as necessary
		for (Entry<ParcelUuid, VcnConfig> entry : mConfigs.entrySet()) {
		if (snapshot.packageHasPermissionsForSubscriptionGroup(
		entry.getKey(), entry.getValue().getProvisioningPackageName())) {
		if (!mVcns.containsKey(entry.getKey())) {
		startVcnLocked(entry.getKey(), entry.getValue());
		}

		// Cancel any scheduled teardowns for active subscriptions
		mHandler.removeCallbacksAndMessages(mVcns.get(entry.getKey()));
		}
		}

		// Schedule teardown of any VCN instances that have lost carrier privileges (after a
		// delay)
		for (Entry<ParcelUuid, Vcn> entry : mVcns.entrySet()) {
		final VcnConfig config = mConfigs.get(entry.getKey());
		if (config == null
		\|\| !snapshot.packageHasPermissionsForSubscriptionGroup(
		entry.getKey(), config.getProvisioningPackageName())) {
		final ParcelUuid uuidToTeardown = entry.getKey();
		final Vcn instanceToTeardown = entry.getValue();

		mHandler.postDelayed(() -> {
		synchronized (mLock) {
		// Guard against case where this is run after a old instance was
		// torn down, and a new instance was started. Verify to ensure
		// correct instance is torn down. This could happen as a result of a
		// Carrier App manually removing/adding a VcnConfig.
		if (mVcns.get(uuidToTeardown) == instanceToTeardown) {
		mVcns.remove(uuidToTeardown).teardownAsynchronously();
		}
		}
		}, instanceToTeardown, CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS);
		}
		}
		}
		}
		}

		@GuardedBy("mLock")
		private void startVcnLocked(@NonNull ParcelUuid subscriptionGroup, @NonNull VcnConfig config) {
		Slog.v(TAG, "Starting VCN config for subGrp: " + subscriptionGroup);

		// TODO(b/176939047): Support multiple VCNs active at the same time, or limit to one active
		// VCN.

		final Vcn newInstance = mDeps.newVcn(mVcnContext, subscriptionGroup, config);
		mVcns.put(subscriptionGroup, newInstance);
		}

		@GuardedBy("mLock")
		private void startOrUpdateVcnLocked(
		@NonNull ParcelUuid subscriptionGroup, @NonNull VcnConfig config) {
		Slog.v(TAG, "Starting or updating VCN config for subGrp: " + subscriptionGroup);

		if (mVcns.containsKey(subscriptionGroup)) {
		mVcns.get(subscriptionGroup).updateConfig(config);
		} else {
		startVcnLocked(subscriptionGroup, config);
		}
		}

		/**
		* Sets a VCN config for a given subscription group.
		*
		* <p>Implements the IVcnManagementService Binder interface.
		*/
		@Override
		public void setVcnConfig(@NonNull ParcelUuid subscriptionGroup, @NonNull VcnConfig config) {
		public void setVcnConfig(
		@NonNull ParcelUuid subscriptionGroup,
		@NonNull VcnConfig config,
		@NonNull String opPkgName) {
		requireNonNull(subscriptionGroup, "subscriptionGroup was null");
		requireNonNull(config, "config was null");
		requireNonNull(opPkgName, "opPkgName was null");
		if (!config.getProvisioningPackageName().equals(opPkgName)) {
		throw new IllegalArgumentException("Mismatched caller and VcnConfig creator");
		}
		Slog.v(TAG, "VCN config updated for subGrp: " + subscriptionGroup);

		mContext.getSystemService(AppOpsManager.class)
		.checkPackage(mDeps.getBinderCallingUid(), config.getProvisioningPackageName());
		enforceCallingUserAndCarrierPrivilege(subscriptionGroup);

		Binder.withCleanCallingIdentity(() -> {
		synchronized (mLock) {
		mConfigs.put(subscriptionGroup, config);
		startOrUpdateVcnLocked(subscriptionGroup, config);

		// Must be done synchronously to ensure that writes do not happen out-of-order.
		writeConfigsToDiskLocked();
		}

		// TODO: Clear Binder calling identity
		// TODO: Trigger startup as necessary
		});
		}

		/**
		@@ -308,18 +448,21 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		@Override
		public void clearVcnConfig(@NonNull ParcelUuid subscriptionGroup) {
		requireNonNull(subscriptionGroup, "subscriptionGroup was null");
		Slog.v(TAG, "VCN config cleared for subGrp: " + subscriptionGroup);

		enforceCallingUserAndCarrierPrivilege(subscriptionGroup);

		Binder.withCleanCallingIdentity(() -> {
		synchronized (mLock) {
		mConfigs.remove(subscriptionGroup);

		// Must be done synchronously to ensure that writes do not happen out-of-order.
		writeConfigsToDiskLocked();
		if (mVcns.containsKey(subscriptionGroup)) {
		mVcns.remove(subscriptionGroup).teardownAsynchronously();
		}

		// TODO: Clear Binder calling identity
		// TODO: Trigger teardown as necessary
		writeConfigsToDiskLocked();
		}
		});
		}

		@GuardedBy("mLock")
		@@ -345,19 +488,11 @@ public class VcnManagementService extends IVcnManagementService.Stub {
		}
		}

		/**
		* Network provider for VCN networks.
		*
		* @hide
		*/
		public class VcnNetworkProvider extends NetworkProvider {
		VcnNetworkProvider(Context context, Looper looper) {
		super(context, looper, VcnNetworkProvider.class.getSimpleName());
		}

		@Override
		public void onNetworkRequested(@NonNull NetworkRequest request, int score, int providerId) {
		// TODO: Handle network requests - Ensure VCN started, and start appropriate tunnels.
		/** Get current configuration list for testing purposes */
		@VisibleForTesting(visibility = Visibility.PRIVATE)
		public Map<ParcelUuid, Vcn> getAllVcns() {
		synchronized (mLock) {
		return Collections.unmodifiableMap(mVcns);
		}
		}
		}

services/core/java/com/android/server/vcn/TelephonySubscriptionTracker.java

+52 −12

Original line number	Diff line number	Diff line
		@@ -36,6 +36,8 @@ import android.telephony.CarrierConfigManager;
		import android.telephony.SubscriptionInfo;
		import android.telephony.SubscriptionManager;
		import android.telephony.SubscriptionManager.OnSubscriptionsChangedListener;
		import android.telephony.TelephonyManager;
		import android.util.ArrayMap;
		import android.util.ArraySet;
		import android.util.Slog;

		@@ -79,6 +81,7 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {
		@NonNull private final TelephonySubscriptionTrackerCallback mCallback;
		@NonNull private final Dependencies mDeps;

		@NonNull private final TelephonyManager mTelephonyManager;
		@NonNull private final SubscriptionManager mSubscriptionManager;
		@NonNull private final CarrierConfigManager mCarrierConfigManager;

		@@ -106,6 +109,7 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {
		mCallback = Objects.requireNonNull(callback, "Missing callback");
		mDeps = Objects.requireNonNull(deps, "Missing deps");

		mTelephonyManager = mContext.getSystemService(TelephonyManager.class);
		mSubscriptionManager = mContext.getSystemService(SubscriptionManager.class);
		mCarrierConfigManager = mContext.getSystemService(CarrierConfigManager.class);

		@@ -139,7 +143,7 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {
		* so callbacks & broadcasts are all serialized on mHandler, avoiding the need for locking.
		*/
		public void handleSubscriptionsChanged() {
		final Set<ParcelUuid> activeSubGroups = new ArraySet<>();
		final Map<ParcelUuid, Set<String>> privilegedPackages = new HashMap<>();
		final Map<Integer, ParcelUuid> newSubIdToGroupMap = new HashMap<>();

		final List<SubscriptionInfo> allSubs = mSubscriptionManager.getAllSubscriptionInfoList();
		@@ -166,12 +170,22 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {
		// group.
		if (subInfo.getSimSlotIndex() != INVALID_SIM_SLOT_INDEX
		&& mReadySubIdsBySlotId.values().contains(subInfo.getSubscriptionId())) {
		activeSubGroups.add(subInfo.getGroupUuid());
		// TODO (b/172619301): Cache based on callbacks from CarrierPrivilegesTracker

		final TelephonyManager subIdSpecificTelephonyManager =
		mTelephonyManager.createForSubscriptionId(subInfo.getSubscriptionId());

		final ParcelUuid subGroup = subInfo.getGroupUuid();
		final Set<String> pkgs =
		privilegedPackages.getOrDefault(subGroup, new ArraySet<>());
		pkgs.addAll(subIdSpecificTelephonyManager.getPackagesWithCarrierPrivileges());

		privilegedPackages.put(subGroup, pkgs);
		}
		}

		final TelephonySubscriptionSnapshot newSnapshot =
		new TelephonySubscriptionSnapshot(newSubIdToGroupMap, activeSubGroups);
		new TelephonySubscriptionSnapshot(newSubIdToGroupMap, privilegedPackages);

		// If snapshot was meaningfully updated, fire the callback
		if (!newSnapshot.equals(mCurrentSnapshot)) {
		@@ -231,22 +245,40 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {
		/** TelephonySubscriptionSnapshot is a class containing info about active subscriptions */
		public static class TelephonySubscriptionSnapshot {
		private final Map<Integer, ParcelUuid> mSubIdToGroupMap;
		private final Set<ParcelUuid> mActiveGroups;
		private final Map<ParcelUuid, Set<String>> mPrivilegedPackages;

		public static final TelephonySubscriptionSnapshot EMPTY_SNAPSHOT =
		new TelephonySubscriptionSnapshot(Collections.emptyMap(), Collections.emptyMap());

		@VisibleForTesting(visibility = Visibility.PRIVATE)
		TelephonySubscriptionSnapshot(
		@NonNull Map<Integer, ParcelUuid> subIdToGroupMap,
		@NonNull Set<ParcelUuid> activeGroups) {
		mSubIdToGroupMap = Collections.unmodifiableMap(
		Objects.requireNonNull(subIdToGroupMap, "subIdToGroupMap was null"));
		mActiveGroups = Collections.unmodifiableSet(
		Objects.requireNonNull(activeGroups, "activeGroups was null"));
		@NonNull Map<ParcelUuid, Set<String>> privilegedPackages) {
		Objects.requireNonNull(subIdToGroupMap, "subIdToGroupMap was null");
		Objects.requireNonNull(privilegedPackages, "privilegedPackages was null");

		mSubIdToGroupMap = Collections.unmodifiableMap(subIdToGroupMap);

		final Map<ParcelUuid, Set<String>> unmodifiableInnerSets = new ArrayMap<>();
		for (Entry<ParcelUuid, Set<String>> entry : privilegedPackages.entrySet()) {
		unmodifiableInnerSets.put(
		entry.getKey(), Collections.unmodifiableSet(entry.getValue()));
		}
		mPrivilegedPackages = Collections.unmodifiableMap(unmodifiableInnerSets);
		}

		/** Returns the active subscription groups */
		@NonNull
		public Set<ParcelUuid> getActiveSubscriptionGroups() {
		return mActiveGroups;
		return mPrivilegedPackages.keySet();
		}

		/** Checks if the provided package is carrier privileged for the specified sub group. */
		public boolean packageHasPermissionsForSubscriptionGroup(
		@NonNull ParcelUuid subGrp, @NonNull String packageName) {
		final Set<String> privilegedPackages = mPrivilegedPackages.get(subGrp);

		return privilegedPackages != null && privilegedPackages.contains(packageName);
		}

		/** Returns the Subscription Group for a given subId. */
		@@ -273,7 +305,7 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {

		@Override
		public int hashCode() {
		return Objects.hash(mSubIdToGroupMap, mActiveGroups);
		return Objects.hash(mSubIdToGroupMap, mPrivilegedPackages);
		}

		@Override
		@@ -285,7 +317,15 @@ public class TelephonySubscriptionTracker extends BroadcastReceiver {
		final TelephonySubscriptionSnapshot other = (TelephonySubscriptionSnapshot) obj;

		return mSubIdToGroupMap.equals(other.mSubIdToGroupMap)
		&& mActiveGroups.equals(other.mActiveGroups);
		&& mPrivilegedPackages.equals(other.mPrivilegedPackages);
		}

		@Override
		public String toString() {
		return "TelephonySubscriptionSnapshot{ "
		+ "mSubIdToGroupMap=" + mSubIdToGroupMap
		+ ", mPrivilegedPackages=" + mPrivilegedPackages
		+ " }";
		}
		}