Check current user when the operations runs for fingerprint hidl.

The current and target user are both provided to the switch
client constructor which is brittle unless operations are scheduled and
run synchronously. Commit 9a99503870
changed the handlers and somehow caused a bug where the cached current
user was out of sync. The switch client tries to optimize for this and
can skip switching when that occurs.

This also includes two additonal changes 1) a few updated logs from
the original change and 2) restores each scheduling having its own
handler for clarity.

Bug: 213962104
Test: atest UserAwareBiometricSchedulerTest BiometricSchedulerTest BiometricSchedulerOperationTest  SensorTest Face10Test
Test: manual (flash, enroll fingerprint, add work profile account, reboot, verify fingerprint still works)
Change-Id: Ifb73b0145aeb8afb62d1f55d2f881347b0d2ef8a

services/core/java/com/android/server/biometrics/sensors/BiometricScheduler.java

@@ -25,6 +25,7 @@ import android.hardware.biometrics.IBiometricService;
 import android.hardware.fingerprint.FingerprintSensorPropertiesInternal;
 import android.os.Handler;
 import android.os.IBinder;
+import android.os.Looper;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.util.Slog;
@@ -232,17 +233,14 @@ public class BiometricScheduler {
      * Creates a new scheduler.
      *
      * @param tag for the specific instance of the scheduler. Should be unique.
-     * @param handler handler for callbacks (all methods of this class must be called on the
-     *                thread associated with this handler)
      * @param sensorType the sensorType that this scheduler is handling.
      * @param gestureAvailabilityDispatcher may be null if the sensor does not support gestures
      *                                      (such as fingerprint swipe).
      */
     public BiometricScheduler(@NonNull String tag,
-            @NonNull Handler handler,
             @SensorType int sensorType,
             @Nullable GestureAvailabilityDispatcher gestureAvailabilityDispatcher) {
-        this(tag, handler, sensorType, gestureAvailabilityDispatcher,
+        this(tag, new Handler(Looper.getMainLooper()), sensorType, gestureAvailabilityDispatcher,
                 IBiometricService.Stub.asInterface(
                         ServiceManager.getService(Context.BIOMETRIC_SERVICE)),
                 LOG_NUM_RECENT_OPERATIONS, CoexCoordinator.getInstance());
@@ -376,8 +374,9 @@ public class BiometricScheduler {
         // send ERROR_CANCELED and skip the operation.
         if (clientMonitor.interruptsPrecedingClients()) {
             for (BiometricSchedulerOperation operation : mPendingOperations) {
-                Slog.d(getTag(), "New client, marking pending op as canceling: " + operation);
+                if (operation.markCanceling()) {
-                operation.markCanceling();
+                    Slog.d(getTag(), "New client, marking pending op as canceling: " + operation);
+                }
             }
         }
 

services/core/java/com/android/server/biometrics/sensors/BiometricSchedulerOperation.java

@@ -225,12 +225,13 @@ public class BiometricSchedulerOperation {
         Slog.v(TAG, "Aborted: " + this);
     }
 
-    /** Flags this operation as canceled, but does not cancel it until started. */
+    /** Flags this operation as canceled, if possible, but does not cancel it until started. */
-    public void markCanceling() {
+    public boolean markCanceling() {
         if (mState == STATE_WAITING_IN_QUEUE && isInterruptable()) {
             mState = STATE_WAITING_IN_QUEUE_CANCELING;
-            Slog.v(TAG, "Marked cancelling: " + this);
+            return true;
         }
+        return false;
     }
 
     /**
@@ -280,6 +281,7 @@ public class BiometricSchedulerOperation {
             @Override
             public void onClientFinished(@NonNull BaseClientMonitor clientMonitor,
                     boolean success) {
+                Slog.d(TAG, "[Finished / destroy]: " + clientMonitor);
                 mClientMonitor.destroy();
                 mState = STATE_FINISHED;
             }

services/core/java/com/android/server/biometrics/sensors/UserAwareBiometricScheduler.java

@@ -23,6 +23,7 @@ import android.annotation.Nullable;
 import android.content.Context;
 import android.hardware.biometrics.IBiometricService;
 import android.os.Handler;
+import android.os.Looper;
 import android.os.ServiceManager;
 import android.os.UserHandle;
 import android.util.Slog;
@@ -85,7 +86,7 @@ public class UserAwareBiometricScheduler extends BiometricScheduler {
     }
 
     @VisibleForTesting
-    UserAwareBiometricScheduler(@NonNull String tag,
+    public UserAwareBiometricScheduler(@NonNull String tag,
             @NonNull Handler handler,
             @SensorType int sensorType,
             @Nullable GestureAvailabilityDispatcher gestureAvailabilityDispatcher,
@@ -101,12 +102,11 @@ public class UserAwareBiometricScheduler extends BiometricScheduler {
     }
 
     public UserAwareBiometricScheduler(@NonNull String tag,
-            @NonNull Handler handler,
             @SensorType int sensorType,
             @Nullable GestureAvailabilityDispatcher gestureAvailabilityDispatcher,
             @NonNull CurrentUserRetriever currentUserRetriever,
             @NonNull UserSwitchCallback userSwitchCallback) {
-        this(tag, handler, sensorType, gestureAvailabilityDispatcher,
+        this(tag, new Handler(Looper.getMainLooper()), sensorType, gestureAvailabilityDispatcher,
                 IBiometricService.Stub.asInterface(
                         ServiceManager.getService(Context.BIOMETRIC_SERVICE)),
                 currentUserRetriever, userSwitchCallback, CoexCoordinator.getInstance());

services/core/java/com/android/server/biometrics/sensors/face/aidl/Sensor.java

@@ -494,7 +494,7 @@ public class Sensor {
         mToken = new Binder();
         mHandler = handler;
         mSensorProperties = sensorProperties;
-        mScheduler = new UserAwareBiometricScheduler(tag, mHandler,
+        mScheduler = new UserAwareBiometricScheduler(tag,
                 BiometricScheduler.SENSOR_TYPE_FACE, null /* gestureAvailabilityDispatcher */,
                 () -> mCurrentSession != null ? mCurrentSession.mUserId : UserHandle.USER_NULL,
                 new UserAwareBiometricScheduler.UserSwitchCallback() {

services/core/java/com/android/server/biometrics/sensors/face/hidl/Face10.java

@@ -363,7 +363,7 @@ public class Face10 implements IHwBinder.DeathRecipient, ServiceProvider {
             @NonNull LockoutResetDispatcher lockoutResetDispatcher) {
         final Handler handler = new Handler(Looper.getMainLooper());
         return new Face10(context, sensorProps, lockoutResetDispatcher, handler,
-                new BiometricScheduler(TAG, handler, BiometricScheduler.SENSOR_TYPE_FACE,
+                new BiometricScheduler(TAG, BiometricScheduler.SENSOR_TYPE_FACE,
                         null /* gestureAvailabilityTracker */));
     }
 
@@ -896,6 +896,8 @@ public class Face10 implements IHwBinder.DeathRecipient, ServiceProvider {
                     boolean success) {
                 if (success) {
                     mCurrentUserId = targetUserId;
+                } else {
+                    Slog.w(TAG, "Failed to change user, still: " + mCurrentUserId);
                 }
             }
         });

services/core/java/com/android/server/biometrics/sensors/fingerprint/aidl/Sensor.java

@@ -449,7 +449,7 @@ class Sensor {
         mHandler = handler;
         mSensorProperties = sensorProperties;
         mLockoutCache = new LockoutCache();
-        mScheduler = new UserAwareBiometricScheduler(tag, handler,
+        mScheduler = new UserAwareBiometricScheduler(tag,
                 BiometricScheduler.sensorTypeFromFingerprintProperties(mSensorProperties),
                 gestureAvailabilityDispatcher,
                 () -> mCurrentSession != null ? mCurrentSession.mUserId : UserHandle.USER_NULL,

services/core/java/com/android/server/biometrics/sensors/fingerprint/hidl/Fingerprint21.java

@@ -360,7 +360,7 @@ public class Fingerprint21 implements IHwBinder.DeathRecipient, ServiceProvider
             @NonNull LockoutResetDispatcher lockoutResetDispatcher,
             @NonNull GestureAvailabilityDispatcher gestureAvailabilityDispatcher) {
         final BiometricScheduler scheduler =
-                new BiometricScheduler(TAG, handler,
+                new BiometricScheduler(TAG,
                         BiometricScheduler.sensorTypeFromFingerprintProperties(sensorProps),
                         gestureAvailabilityDispatcher);
         final HalResultController controller = new HalResultController(sensorProps.sensorId,
@@ -490,19 +490,25 @@ public class Fingerprint21 implements IHwBinder.DeathRecipient, ServiceProvider
                 !getEnrolledFingerprints(mSensorProperties.sensorId, targetUserId).isEmpty();
         final FingerprintUpdateActiveUserClient client =
                 new FingerprintUpdateActiveUserClient(mContext, mLazyDaemon, targetUserId,
-                        mContext.getOpPackageName(), mSensorProperties.sensorId, mCurrentUserId,
+                        mContext.getOpPackageName(), mSensorProperties.sensorId,
-                        hasEnrolled, mAuthenticatorIds, force);
+                        this::getCurrentUser, hasEnrolled, mAuthenticatorIds, force);
         mScheduler.scheduleClientMonitor(client, new BaseClientMonitor.Callback() {
             @Override
             public void onClientFinished(@NonNull BaseClientMonitor clientMonitor,
                     boolean success) {
                 if (success) {
                     mCurrentUserId = targetUserId;
+                } else {
+                    Slog.w(TAG, "Failed to change user, still: " + mCurrentUserId);
                 }
             }
         });
     }
 
+    private int getCurrentUser() {
+        return mCurrentUserId;
+    }
+
     @Override
     public boolean containsSensor(int sensorId) {
         return mSensorProperties.sensorId == sensorId;

services/core/java/com/android/server/biometrics/sensors/fingerprint/hidl/Fingerprint21UdfpsMock.java

@@ -138,8 +138,7 @@ public class Fingerprint21UdfpsMock extends Fingerprint21 implements TrustManage
 
         TestableBiometricScheduler(@NonNull String tag, @NonNull Handler handler,
                 @Nullable GestureAvailabilityDispatcher gestureAvailabilityDispatcher) {
-            super(tag, handler, BiometricScheduler.SENSOR_TYPE_FP_OTHER,
+            super(tag, BiometricScheduler.SENSOR_TYPE_FP_OTHER, gestureAvailabilityDispatcher);
-                    gestureAvailabilityDispatcher);
         }
 
         void init(@NonNull Fingerprint21UdfpsMock fingerprint21) {

services/core/java/com/android/server/biometrics/sensors/fingerprint/hidl/FingerprintUpdateActiveUserClient.java

@@ -31,6 +31,7 @@ import com.android.server.biometrics.sensors.HalClientMonitor;
 
 import java.io.File;
 import java.util.Map;
+import java.util.function.Supplier;
 
 /**
  * Sets the HAL's current active user, and updates the framework's authenticatorId cache.
@@ -40,7 +41,7 @@ public class FingerprintUpdateActiveUserClient extends HalClientMonitor<IBiometr
     private static final String TAG = "FingerprintUpdateActiveUserClient";
     private static final String FP_DATA_DIR = "fpdata";
 
-    private final int mCurrentUserId;
+    private final Supplier<Integer> mCurrentUserId;
     private final boolean mForceUpdateAuthenticatorId;
     private final boolean mHasEnrolledBiometrics;
     private final Map<Integer, Long> mAuthenticatorIds;
@@ -48,8 +49,9 @@ public class FingerprintUpdateActiveUserClient extends HalClientMonitor<IBiometr
 
     FingerprintUpdateActiveUserClient(@NonNull Context context,
             @NonNull LazyDaemon<IBiometricsFingerprint> lazyDaemon, int userId,
-            @NonNull String owner, int sensorId, int currentUserId, boolean hasEnrolledBiometrics,
+            @NonNull String owner, int sensorId, Supplier<Integer> currentUserId,
-            @NonNull Map<Integer, Long> authenticatorIds, boolean forceUpdateAuthenticatorId) {
+            boolean hasEnrolledBiometrics, @NonNull Map<Integer, Long> authenticatorIds,
+            boolean forceUpdateAuthenticatorId) {
         super(context, lazyDaemon, null /* token */, null /* listener */, userId, owner,
                 0 /* cookie */, sensorId, BiometricsProtoEnums.MODALITY_UNKNOWN,
                 BiometricsProtoEnums.ACTION_UNKNOWN, BiometricsProtoEnums.CLIENT_UNKNOWN);
@@ -63,7 +65,7 @@ public class FingerprintUpdateActiveUserClient extends HalClientMonitor<IBiometr
     public void start(@NonNull Callback callback) {
         super.start(callback);
 
-        if (mCurrentUserId == getTargetUserId() && !mForceUpdateAuthenticatorId) {
+        if (mCurrentUserId.get() == getTargetUserId() && !mForceUpdateAuthenticatorId) {
             Slog.d(TAG, "Already user: " + mCurrentUserId + ", returning");
             callback.onClientFinished(this, true /* success */);
             return;
@@ -109,8 +111,10 @@ public class FingerprintUpdateActiveUserClient extends HalClientMonitor<IBiometr
     @Override
     protected void startHalOperation() {
         try {
-            getFreshDaemon().setActiveGroup(getTargetUserId(), mDirectory.getAbsolutePath());
+            final int targetId = getTargetUserId();
-            mAuthenticatorIds.put(getTargetUserId(), mHasEnrolledBiometrics
+            Slog.d(TAG, "Setting active user: " + targetId);
+            getFreshDaemon().setActiveGroup(targetId, mDirectory.getAbsolutePath());
+            mAuthenticatorIds.put(targetId, mHasEnrolledBiometrics
                     ? getFreshDaemon().getAuthenticatorId() : 0L);
             mCallback.onClientFinished(this, true /* success */);
         } catch (RemoteException e) {

services/tests/servicestests/src/com/android/server/biometrics/sensors/face/aidl/SensorTest.java

@@ -33,6 +33,7 @@ import android.platform.test.annotations.Presubmit;
 import androidx.test.filters.SmallTest;
 
 import com.android.server.biometrics.sensors.BiometricScheduler;
+import com.android.server.biometrics.sensors.CoexCoordinator;
 import com.android.server.biometrics.sensors.LockoutCache;
 import com.android.server.biometrics.sensors.LockoutResetDispatcher;
 import com.android.server.biometrics.sensors.LockoutTracker;
@@ -82,8 +83,10 @@ public class SensorTest {
                 new Handler(mLooper.getLooper()),
                 BiometricScheduler.SENSOR_TYPE_FACE,
                 null /* gestureAvailabilityDispatcher */,
+                mBiometricService,
                 () -> USER_ID,
-                mUserSwitchCallback);
+                mUserSwitchCallback,
+                CoexCoordinator.getInstance());
         mHalCallback = new Sensor.HalSessionCallback(mContext, new Handler(mLooper.getLooper()),
                 TAG, mScheduler, SENSOR_ID,
                 USER_ID, mLockoutCache, mLockoutResetDispatcher, mHalSessionCallback);

services/tests/servicestests/src/com/android/server/biometrics/sensors/fingerprint/aidl/SensorTest.java

@@ -33,6 +33,7 @@ import android.platform.test.annotations.Presubmit;
 import androidx.test.filters.SmallTest;
 
 import com.android.server.biometrics.sensors.BiometricScheduler;
+import com.android.server.biometrics.sensors.CoexCoordinator;
 import com.android.server.biometrics.sensors.LockoutCache;
 import com.android.server.biometrics.sensors.LockoutResetDispatcher;
 import com.android.server.biometrics.sensors.LockoutTracker;
@@ -82,8 +83,10 @@ public class SensorTest {
                 new Handler(mLooper.getLooper()),
                 BiometricScheduler.SENSOR_TYPE_FP_OTHER,
                 null /* gestureAvailabilityDispatcher */,
+                mBiometricService,
                 () -> USER_ID,
-                mUserSwitchCallback);
+                mUserSwitchCallback,
+                CoexCoordinator.getInstance());
         mHalCallback = new Sensor.HalSessionCallback(mContext, new Handler(mLooper.getLooper()),
                 TAG, mScheduler, SENSOR_ID,
                 USER_ID, mLockoutCache, mLockoutResetDispatcher, mHalSessionCallback);