| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.biometrics.sensors.face; |
| |
| import static android.Manifest.permission.INTERACT_ACROSS_USERS; |
| import static android.Manifest.permission.MANAGE_BIOMETRIC; |
| import static android.Manifest.permission.USE_BIOMETRIC_INTERNAL; |
| |
| import android.app.ActivityManager; |
| import android.app.NotificationManager; |
| import android.content.Context; |
| import android.content.pm.UserInfo; |
| import android.hardware.biometrics.BiometricConstants; |
| import android.hardware.biometrics.BiometricsProtoEnums; |
| import android.hardware.biometrics.IBiometricSensorReceiver; |
| import android.hardware.biometrics.IBiometricServiceLockoutResetCallback; |
| import android.hardware.biometrics.face.V1_0.IBiometricsFace; |
| import android.hardware.biometrics.face.V1_0.IBiometricsFaceClientCallback; |
| import android.hardware.face.Face; |
| import android.hardware.face.IFaceService; |
| import android.hardware.face.IFaceServiceReceiver; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Environment; |
| import android.os.IBinder; |
| import android.os.NativeHandle; |
| import android.os.RemoteException; |
| import android.os.SELinux; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.util.Slog; |
| import android.view.Surface; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.internal.util.DumpUtils; |
| import com.android.server.SystemServerInitThreadPool; |
| import com.android.server.biometrics.sensors.AuthenticationClient; |
| import com.android.server.biometrics.sensors.BiometricServiceBase; |
| import com.android.server.biometrics.sensors.BiometricUtils; |
| import com.android.server.biometrics.sensors.ClientMonitor; |
| import com.android.server.biometrics.sensors.ClientMonitorCallbackConverter; |
| import com.android.server.biometrics.sensors.EnrollClient; |
| import com.android.server.biometrics.sensors.GenerateChallengeClient; |
| import com.android.server.biometrics.sensors.LockoutResetTracker; |
| import com.android.server.biometrics.sensors.LockoutTracker; |
| import com.android.server.biometrics.sensors.PerformanceTracker; |
| import com.android.server.biometrics.sensors.RemovalClient; |
| import com.android.server.biometrics.sensors.RevokeChallengeClient; |
| |
| import org.json.JSONArray; |
| import org.json.JSONException; |
| import org.json.JSONObject; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * A service to manage multiple clients that want to access the face HAL API. |
| * The service is responsible for maintaining a list of clients and dispatching all |
| * face-related events. |
| */ |
| public class FaceService extends BiometricServiceBase<IBiometricsFace> { |
| |
| protected static final String TAG = "FaceService"; |
| private static final boolean DEBUG = true; |
| private static final String FACE_DATA_DIR = "facedata"; |
| private static final String ACTION_LOCKOUT_RESET = |
| "com.android.server.biometrics.face.ACTION_LOCKOUT_RESET"; |
| |
| |
| static final String NOTIFICATION_TAG = "FaceService"; |
| static final int NOTIFICATION_ID = 1; |
| |
| private final LockoutResetTracker mLockoutResetTracker; |
| private final ClientMonitor.LazyDaemon<IBiometricsFace> mLazyDaemon; |
| |
| /** |
| * Receives the incoming binder calls from FaceManager. |
| */ |
| private final class FaceServiceWrapper extends IFaceService.Stub { |
| private static final int ENROLL_TIMEOUT_SEC = 75; |
| |
| /** |
| * The following methods contain common code which is shared in biometrics/common. |
| */ |
| |
| @Override // Binder call |
| public void generateChallenge(IBinder token, IFaceServiceReceiver receiver, |
| String opPackageName) { |
| checkPermission(MANAGE_BIOMETRIC); |
| |
| final FaceGenerateChallengeClient client = new FaceGenerateChallengeClient(getContext(), |
| mLazyDaemon, token, new ClientMonitorCallbackConverter(receiver), opPackageName, |
| getSensorId()); |
| generateChallengeInternal(client); |
| } |
| |
| @Override // Binder call |
| public void revokeChallenge(IBinder token, String owner) { |
| checkPermission(MANAGE_BIOMETRIC); |
| |
| final FaceRevokeChallengeClient client = new FaceRevokeChallengeClient(getContext(), |
| mLazyDaemon, token, owner, getSensorId()); |
| |
| // TODO(b/137106905): Schedule binder calls in FaceService to avoid deadlocks. |
| if (getCurrentClient() == null) { |
| // if we aren't handling any other HIDL calls (mCurrentClient == null), revoke |
| // the challenge right away. |
| revokeChallengeInternal(client); |
| } else { |
| // postpone revoking the challenge until we finish processing the current HIDL |
| // call. |
| mPendingRevokeChallenge = client; |
| } |
| } |
| |
| @Override // Binder call |
| public void enroll(int userId, final IBinder token, final byte[] hardwareAuthToken, |
| final IFaceServiceReceiver receiver, final String opPackageName, |
| final int[] disabledFeatures, Surface surface) { |
| checkPermission(MANAGE_BIOMETRIC); |
| updateActiveGroup(userId); |
| |
| mHandler.post(() -> { |
| mNotificationManager.cancelAsUser(NOTIFICATION_TAG, NOTIFICATION_ID, |
| UserHandle.CURRENT); |
| }); |
| |
| final FaceEnrollClient client = new FaceEnrollClient(getContext(), mLazyDaemon, token, |
| new ClientMonitorCallbackConverter(receiver), userId, hardwareAuthToken, |
| opPackageName, getBiometricUtils(), disabledFeatures, ENROLL_TIMEOUT_SEC, |
| convertSurfaceToNativeHandle(surface), getSensorId()); |
| |
| enrollInternal(client, userId); |
| } |
| |
| @Override // Binder call |
| public void enrollRemotely(int userId, final IBinder token, final byte[] hardwareAuthToken, |
| final IFaceServiceReceiver receiver, final String opPackageName, |
| final int[] disabledFeatures) { |
| checkPermission(MANAGE_BIOMETRIC); |
| // TODO(b/145027036): Implement this. |
| } |
| |
| @Override // Binder call |
| public void cancelEnrollment(final IBinder token) { |
| checkPermission(MANAGE_BIOMETRIC); |
| cancelEnrollmentInternal(token); |
| } |
| |
| @Override // Binder call |
| public void authenticate(final IBinder token, final long opId, int userId, |
| final IFaceServiceReceiver receiver, final String opPackageName) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| updateActiveGroup(userId); |
| |
| final boolean restricted = isRestricted(); |
| final int statsClient = isKeyguard(opPackageName) ? BiometricsProtoEnums.CLIENT_KEYGUARD |
| : BiometricsProtoEnums.CLIENT_UNKNOWN; |
| final FaceAuthenticationClient client = new FaceAuthenticationClient(getContext(), |
| mLazyDaemon, token, new ClientMonitorCallbackConverter(receiver), userId, opId, |
| restricted, opPackageName, 0 /* cookie */, false /* requireConfirmation */, |
| getSensorId(), isStrongBiometric(), statsClient, mTaskStackListener, |
| mLockoutTracker, mUsageStats); |
| authenticateInternal(client, opPackageName); |
| } |
| |
| @Override // Binder call |
| public void prepareForAuthentication(boolean requireConfirmation, IBinder token, long opId, |
| int userId, IBiometricSensorReceiver sensorReceiver, |
| String opPackageName, int cookie, int callingUid, int callingPid, |
| int callingUserId) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| updateActiveGroup(userId); |
| |
| final boolean restricted = true; // BiometricPrompt is always restricted |
| final FaceAuthenticationClient client = new FaceAuthenticationClient(getContext(), |
| mLazyDaemon, token, new ClientMonitorCallbackConverter(sensorReceiver), userId, |
| opId, restricted, opPackageName, cookie, requireConfirmation, getSensorId(), |
| isStrongBiometric(), BiometricsProtoEnums.CLIENT_BIOMETRIC_PROMPT, |
| mTaskStackListener, mLockoutTracker, mUsageStats); |
| authenticateInternal(client, opPackageName); |
| } |
| |
| @Override // Binder call |
| public void startPreparedClient(int cookie) { |
| checkPermission(MANAGE_BIOMETRIC); |
| startCurrentClient(cookie); |
| } |
| |
| @Override // Binder call |
| public void cancelAuthentication(final IBinder token, final String opPackageName) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| cancelAuthenticationInternal(token, opPackageName, true /* fromClient */); |
| } |
| |
| @Override // Binder call |
| public void cancelAuthenticationFromService(final IBinder token, final String opPackageName, |
| int callingUid, int callingPid, int callingUserId) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| // Cancellation is from system server in this case. |
| cancelAuthenticationInternal(token, opPackageName, false /* fromClient */); |
| } |
| |
| @Override // Binder call |
| public void remove(final IBinder token, final int faceId, final int userId, |
| final IFaceServiceReceiver receiver, final String opPackageName) { |
| checkPermission(MANAGE_BIOMETRIC); |
| updateActiveGroup(userId); |
| |
| if (token == null) { |
| Slog.w(TAG, "remove(): token is null"); |
| return; |
| } |
| |
| final FaceRemovalClient client = new FaceRemovalClient(getContext(), mLazyDaemon, token, |
| new ClientMonitorCallbackConverter(receiver), faceId, userId, opPackageName, |
| getBiometricUtils(), getSensorId(), mAuthenticatorIds); |
| removeInternal(client); |
| } |
| |
| @Override |
| public void addLockoutResetCallback(final IBiometricServiceLockoutResetCallback callback, |
| final String opPackageName) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| mHandler.post(() -> { |
| mLockoutResetTracker.addCallback(callback, opPackageName); |
| }); |
| } |
| |
| @Override // Binder call |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (!DumpUtils.checkDumpPermission(getContext(), TAG, pw)) { |
| return; |
| } |
| |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| if (args.length > 1 && "--hal".equals(args[0])) { |
| dumpHal(fd, Arrays.copyOfRange(args, 1, args.length, args.getClass())); |
| } else { |
| dumpInternal(pw); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| /** |
| * The following methods don't use any common code from BiometricService |
| */ |
| |
| // TODO: refactor out common code here |
| @Override // Binder call |
| public boolean isHardwareDetected(String opPackageName) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| IBiometricsFace daemon = getFaceDaemon(); |
| return daemon != null; |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override // Binder call |
| public List<Face> getEnrolledFaces(int userId, String opPackageName) { |
| checkPermission(MANAGE_BIOMETRIC); |
| return FaceService.this.getEnrolledTemplates(userId); |
| } |
| |
| @Override // Binder call |
| public boolean hasEnrolledFaces(int userId, String opPackageName) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| return FaceService.this.hasEnrolledBiometrics(userId); |
| } |
| |
| @Override |
| public @LockoutTracker.LockoutMode int getLockoutModeForUser(int userId) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| return mLockoutTracker.getLockoutModeForUser(userId); |
| } |
| |
| @Override // Binder call |
| public long getAuthenticatorId(int callingUserId) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| return FaceService.this.getAuthenticatorId(callingUserId); |
| } |
| |
| @Override // Binder call |
| public void resetLockout(int userId, byte[] hardwareAuthToken) { |
| checkPermission(MANAGE_BIOMETRIC); |
| mHandler.post(() -> { |
| if (!FaceService.this.hasEnrolledBiometrics(userId)) { |
| Slog.w(TAG, "Ignoring lockout reset, no templates enrolled"); |
| return; |
| } |
| |
| Slog.d(TAG, "Resetting lockout for user: " + userId); |
| |
| updateActiveGroup(userId); |
| final FaceResetLockoutClient client = new FaceResetLockoutClient(getContext(), |
| mLazyDaemon, userId, getContext().getOpPackageName(), getSensorId(), |
| hardwareAuthToken); |
| startClient(client, true /* initiatedByClient */); |
| }); |
| } |
| |
| @Override |
| public void setFeature(final IBinder token, int userId, int feature, boolean enabled, |
| final byte[] hardwareAuthToken, IFaceServiceReceiver receiver, |
| final String opPackageName) { |
| checkPermission(MANAGE_BIOMETRIC); |
| |
| mHandler.post(() -> { |
| if (DEBUG) { |
| Slog.d(TAG, "setFeature for user(" + userId + ")"); |
| } |
| updateActiveGroup(userId); |
| if (!FaceService.this.hasEnrolledBiometrics(mCurrentUserId)) { |
| Slog.e(TAG, "No enrolled biometrics while setting feature: " + feature); |
| return; |
| } |
| |
| final int faceId = getFirstTemplateForUser(mCurrentUserId); |
| |
| final FaceSetFeatureClient client = new FaceSetFeatureClient(getContext(), |
| mLazyDaemon, token, new ClientMonitorCallbackConverter(receiver), userId, |
| opPackageName, getSensorId(), feature, enabled, hardwareAuthToken, faceId); |
| startClient(client, true /* initiatedByClient */); |
| }); |
| |
| } |
| |
| @Override |
| public void getFeature(final IBinder token, int userId, int feature, |
| IFaceServiceReceiver receiver, final String opPackageName) { |
| checkPermission(MANAGE_BIOMETRIC); |
| |
| mHandler.post(() -> { |
| if (DEBUG) { |
| Slog.d(TAG, "getFeature for user(" + userId + ")"); |
| } |
| updateActiveGroup(userId); |
| // This should ideally return tri-state, but the user isn't shown settings unless |
| // they are enrolled so it's fine for now. |
| if (!FaceService.this.hasEnrolledBiometrics(mCurrentUserId)) { |
| Slog.e(TAG, "No enrolled biometrics while getting feature: " + feature); |
| return; |
| } |
| |
| // TODO: Support multiple faces |
| final int faceId = getFirstTemplateForUser(mCurrentUserId); |
| |
| final FaceGetFeatureClient client = new FaceGetFeatureClient(getContext(), |
| mLazyDaemon, token, new ClientMonitorCallbackConverter(receiver), userId, |
| opPackageName, getSensorId(), feature, faceId); |
| startClient(client, true /* initiatedByClient */); |
| }); |
| |
| } |
| |
| // TODO: Support multiple faces |
| private int getFirstTemplateForUser(int user) { |
| final List<Face> faces = FaceService.this.getEnrolledTemplates(user); |
| if (!faces.isEmpty()) { |
| return faces.get(0).getBiometricId(); |
| } |
| return 0; |
| } |
| |
| @Override // Binder call |
| public void initializeConfiguration(int sensorId) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| initializeConfigurationInternal(sensorId); |
| } |
| } |
| |
| private final LockoutHalImpl mLockoutTracker; |
| |
| @GuardedBy("this") |
| private IBiometricsFace mDaemon; |
| private UsageStats mUsageStats; |
| private FaceRevokeChallengeClient mPendingRevokeChallenge; |
| |
| private NotificationManager mNotificationManager; |
| |
| /** |
| * Receives callbacks from the HAL. |
| */ |
| private IBiometricsFaceClientCallback mDaemonCallback = |
| new IBiometricsFaceClientCallback.Stub() { |
| @Override |
| public void onEnrollResult(final long deviceId, int faceId, int userId, |
| int remaining) { |
| mHandler.post(() -> { |
| final Face face = new Face(getBiometricUtils() |
| .getUniqueName(getContext(), userId), faceId, deviceId); |
| FaceService.super.handleEnrollResult(face, remaining); |
| |
| // Enrollment changes the authenticatorId, so update it here. |
| IBiometricsFace daemon = getFaceDaemon(); |
| if (remaining == 0 && daemon != null) { |
| try { |
| mAuthenticatorIds.put(userId, |
| hasEnrolledBiometrics(userId) ? daemon.getAuthenticatorId().value |
| : 0L); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Unable to get authenticatorId", e); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void onAcquired(final long deviceId, final int userId, final int acquiredInfo, |
| final int vendorCode) { |
| mHandler.post(() -> { |
| FaceService.super.handleAcquired(acquiredInfo, vendorCode); |
| }); |
| } |
| |
| @Override |
| public void onAuthenticated(final long deviceId, final int faceId, final int userId, |
| ArrayList<Byte> token) { |
| mHandler.post(() -> { |
| Face face = new Face("", faceId, deviceId); |
| FaceService.super.handleAuthenticated(face, token); |
| }); |
| } |
| |
| @Override |
| public void onError(final long deviceId, final int userId, final int error, |
| final int vendorCode) { |
| mHandler.post(() -> { |
| FaceService.super.handleError(error, vendorCode); |
| |
| // TODO: this chunk of code should be common to all biometric services |
| if (error == BiometricConstants.BIOMETRIC_ERROR_HW_UNAVAILABLE) { |
| // If we get HW_UNAVAILABLE, try to connect again later... |
| Slog.w(TAG, "Got ERROR_HW_UNAVAILABLE; try reconnecting next client."); |
| synchronized (this) { |
| mDaemon = null; |
| mCurrentUserId = UserHandle.USER_NULL; |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void onRemoved(final long deviceId, ArrayList<Integer> faceIds, final int userId) { |
| mHandler.post(() -> { |
| if (!faceIds.isEmpty()) { |
| for (int i = 0; i < faceIds.size(); i++) { |
| final Face face = new Face("", faceIds.get(i), deviceId); |
| // Convert to old behavior |
| FaceService.super.handleRemoved(face, faceIds.size() - i - 1); |
| } |
| } else { |
| final Face face = new Face("", 0 /* identifier */, deviceId); |
| FaceService.super.handleRemoved(face, 0 /* remaining */); |
| } |
| Settings.Secure.putIntForUser(getContext().getContentResolver(), |
| Settings.Secure.FACE_UNLOCK_RE_ENROLL, 0, UserHandle.USER_CURRENT); |
| }); |
| } |
| |
| @Override |
| public void onEnumerate(long deviceId, ArrayList<Integer> faceIds, int userId) |
| throws RemoteException { |
| mHandler.post(() -> { |
| if (!faceIds.isEmpty()) { |
| for (int i = 0; i < faceIds.size(); i++) { |
| final Face face = new Face("", faceIds.get(i), deviceId); |
| // Convert to old old behavior |
| FaceService.super.handleEnumerate(face, faceIds.size() - i - 1); |
| } |
| } else { |
| // For face, the HIDL contract is to receive an empty list when there are no |
| // templates enrolled. Send a null identifier since we don't consume them |
| // anywhere, and send remaining == 0 to plumb this with existing common code. |
| FaceService.super.handleEnumerate(null /* identifier */, 0); |
| } |
| }); |
| } |
| |
| @Override |
| public void onLockoutChanged(long duration) { |
| Slog.d(TAG, "onLockoutChanged: " + duration); |
| |
| final @LockoutTracker.LockoutMode int lockoutMode; |
| if (duration == 0) { |
| lockoutMode = LockoutTracker.LOCKOUT_NONE; |
| } else if (duration == -1 || duration == Long.MAX_VALUE) { |
| lockoutMode = LockoutTracker.LOCKOUT_PERMANENT; |
| } else { |
| lockoutMode = LockoutTracker.LOCKOUT_TIMED; |
| } |
| mLockoutTracker.setCurrentUserLockoutMode(lockoutMode); |
| |
| mHandler.post(() -> { |
| if (duration == 0) { |
| mLockoutResetTracker.notifyLockoutResetCallbacks(getSensorId()); |
| } |
| }); |
| } |
| }; |
| |
| public FaceService(Context context) { |
| super(context); |
| mLazyDaemon = FaceService.this::getFaceDaemon; |
| mLockoutResetTracker = new LockoutResetTracker(context); |
| mLockoutTracker = new LockoutHalImpl(); |
| mUsageStats = new UsageStats(context); |
| mNotificationManager = getContext().getSystemService(NotificationManager.class); |
| } |
| |
| @Override |
| protected void removeClient(ClientMonitor<?> client) { |
| super.removeClient(client); |
| if (mPendingRevokeChallenge != null) { |
| revokeChallengeInternal(mPendingRevokeChallenge); |
| mPendingRevokeChallenge = null; |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| publishBinderService(Context.FACE_SERVICE, new FaceServiceWrapper()); |
| // Get the face daemon on FaceService's on thread so SystemServerInitThreadPool isn't |
| // blocked |
| SystemServerInitThreadPool.submit(() -> mHandler.post(this::getFaceDaemon), |
| TAG + ".onStart"); |
| } |
| |
| @Override |
| public String getTag() { |
| return TAG; |
| } |
| |
| @Override |
| protected IBiometricsFace getDaemon() { |
| return getFaceDaemon(); |
| } |
| |
| @Override |
| protected BiometricUtils getBiometricUtils() { |
| return FaceUtils.getInstance(); |
| } |
| |
| @Override |
| protected boolean hasReachedEnrollmentLimit(int userId) { |
| final int limit = getContext().getResources().getInteger( |
| com.android.internal.R.integer.config_faceMaxTemplatesPerUser); |
| final int enrolled = FaceService.this.getEnrolledTemplates(userId).size(); |
| if (enrolled >= limit) { |
| Slog.w(TAG, "Too many faces registered, user: " + userId); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void serviceDied(long cookie) { |
| super.serviceDied(cookie); |
| mDaemon = null; |
| |
| mCurrentUserId = UserHandle.USER_NULL; // Force updateActiveGroup() to re-evaluate |
| } |
| |
| @Override |
| protected void updateActiveGroup(int userId) { |
| IBiometricsFace daemon = getFaceDaemon(); |
| |
| if (daemon != null) { |
| try { |
| if (userId != mCurrentUserId) { |
| final File baseDir = Environment.getDataVendorDeDirectory(userId); |
| final File faceDir = new File(baseDir, FACE_DATA_DIR); |
| if (!faceDir.exists()) { |
| if (!faceDir.mkdir()) { |
| Slog.v(TAG, "Cannot make directory: " + faceDir.getAbsolutePath()); |
| return; |
| } |
| // Calling mkdir() from this process will create a directory with our |
| // permissions (inherited from the containing dir). This command fixes |
| // the label. |
| if (!SELinux.restorecon(faceDir)) { |
| Slog.w(TAG, "Restorecons failed. Directory will have wrong label."); |
| return; |
| } |
| } |
| |
| daemon.setActiveUser(userId, faceDir.getAbsolutePath()); |
| mCurrentUserId = userId; |
| mAuthenticatorIds.put(userId, |
| hasEnrolledBiometrics(userId) ? daemon.getAuthenticatorId().value : 0L); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to setActiveUser():", e); |
| } |
| } |
| } |
| |
| @Override |
| protected void handleUserSwitching(int userId) { |
| super.handleUserSwitching(userId); |
| // Will be updated when we get the callback from HAL |
| mLockoutTracker.setCurrentUserLockoutMode(LockoutTracker.LOCKOUT_NONE); |
| } |
| |
| @Override |
| protected boolean hasEnrolledBiometrics(int userId) { |
| if (userId != UserHandle.getCallingUserId()) { |
| checkPermission(INTERACT_ACROSS_USERS); |
| } |
| return getBiometricUtils().getBiometricsForUser(getContext(), userId).size() > 0; |
| } |
| |
| @Override |
| protected String getManageBiometricPermission() { |
| return MANAGE_BIOMETRIC; |
| } |
| |
| @Override |
| protected List<Face> getEnrolledTemplates(int userId) { |
| return FaceUtils.getInstance().getBiometricsForUser(getContext(), userId); |
| } |
| |
| @Override |
| protected void notifyClientActiveCallbacks(boolean isActive) { |
| // noop for Face. |
| } |
| |
| @Override |
| protected int statsModality() { |
| return BiometricsProtoEnums.MODALITY_FACE; |
| } |
| |
| @Override |
| protected void doTemplateCleanupForUser(int userId) { |
| final List<Face> enrolledList = getEnrolledTemplates(userId); |
| final FaceInternalCleanupClient client = new FaceInternalCleanupClient(getContext(), |
| mLazyDaemon, userId, getContext().getOpPackageName(), getSensorId(), enrolledList, |
| getBiometricUtils(), mAuthenticatorIds); |
| cleanupInternal(client); |
| } |
| |
| |
| /** Gets the face daemon */ |
| private synchronized IBiometricsFace getFaceDaemon() { |
| if (mDaemon == null) { |
| Slog.v(TAG, "mDaemon was null, reconnect to face"); |
| try { |
| mDaemon = IBiometricsFace.getService(); |
| } catch (java.util.NoSuchElementException e) { |
| // Service doesn't exist or cannot be opened. Logged below. |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to get biometric interface", e); |
| } |
| if (mDaemon == null) { |
| Slog.w(TAG, "face HIDL not available"); |
| return null; |
| } |
| |
| mDaemon.asBinder().linkToDeath(this, 0); |
| |
| long halId = 0; |
| try { |
| halId = mDaemon.setCallback(mDaemonCallback).value; |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to open face HAL", e); |
| mDaemon = null; // try again later! |
| } |
| |
| if (DEBUG) Slog.v(TAG, "Face HAL id: " + halId); |
| if (halId != 0) { |
| loadAuthenticatorIds(); |
| updateActiveGroup(ActivityManager.getCurrentUser()); |
| doTemplateCleanupForUser(ActivityManager.getCurrentUser()); |
| } else { |
| Slog.w(TAG, "Failed to open Face HAL!"); |
| MetricsLogger.count(getContext(), "faced_openhal_error", 1); |
| mDaemon = null; |
| } |
| } |
| return mDaemon; |
| } |
| |
| private native NativeHandle convertSurfaceToNativeHandle(Surface surface); |
| |
| private void dumpInternal(PrintWriter pw) { |
| PerformanceTracker performanceTracker = |
| PerformanceTracker.getInstanceForSensorId(getSensorId()); |
| |
| JSONObject dump = new JSONObject(); |
| try { |
| dump.put("service", "Face Manager"); |
| |
| JSONArray sets = new JSONArray(); |
| for (UserInfo user : UserManager.get(getContext()).getUsers()) { |
| final int userId = user.getUserHandle().getIdentifier(); |
| final int N = getBiometricUtils().getBiometricsForUser(getContext(), userId).size(); |
| JSONObject set = new JSONObject(); |
| set.put("id", userId); |
| set.put("count", N); |
| set.put("accept", performanceTracker.getAcceptForUser(userId)); |
| set.put("reject", performanceTracker.getRejectForUser(userId)); |
| set.put("acquire", performanceTracker.getAcquireForUser(userId)); |
| set.put("lockout", performanceTracker.getTimedLockoutForUser(userId)); |
| set.put("permanentLockout", performanceTracker.getPermanentLockoutForUser(userId)); |
| // cryptoStats measures statistics about secure face transactions |
| // (e.g. to unlock password storage, make secure purchases, etc.) |
| set.put("acceptCrypto", performanceTracker.getAcceptCryptoForUser(userId)); |
| set.put("rejectCrypto", performanceTracker.getRejectCryptoForUser(userId)); |
| set.put("acquireCrypto", performanceTracker.getAcquireCryptoForUser(userId)); |
| sets.put(set); |
| } |
| |
| dump.put("prints", sets); |
| } catch (JSONException e) { |
| Slog.e(TAG, "dump formatting failure", e); |
| } |
| pw.println(dump); |
| pw.println("HAL deaths since last reboot: " + performanceTracker.getHALDeathCount()); |
| |
| mUsageStats.print(pw); |
| } |
| |
| private void dumpHal(FileDescriptor fd, String[] args) { |
| // WARNING: CDD restricts image data from leaving TEE unencrypted on |
| // production devices: |
| // [C-1-10] MUST not allow unencrypted access to identifiable biometric |
| // data or any data derived from it (such as embeddings) to the |
| // Application Processor outside the context of the TEE. |
| // As such, this API should only be enabled for testing purposes on |
| // engineering and userdebug builds. All modules in the software stack |
| // MUST enforce final build products do NOT have this functionality. |
| // Additionally, the following check MUST NOT be removed. |
| if (!(Build.IS_ENG || Build.IS_USERDEBUG)) { |
| return; |
| } |
| |
| // Additionally, this flag allows turning off face for a device |
| // (either permanently through the build or on an individual device). |
| if (SystemProperties.getBoolean("ro.face.disable_debug_data", false) |
| || SystemProperties.getBoolean("persist.face.disable_debug_data", false)) { |
| return; |
| } |
| |
| // The debug method takes two file descriptors. The first is for text |
| // output, which we will drop. The second is for binary data, which |
| // will be the protobuf data. |
| final IBiometricsFace daemon = getFaceDaemon(); |
| if (daemon != null) { |
| FileOutputStream devnull = null; |
| try { |
| devnull = new FileOutputStream("/dev/null"); |
| final NativeHandle handle = new NativeHandle( |
| new FileDescriptor[] { devnull.getFD(), fd }, |
| new int[0], false); |
| daemon.debug(handle, new ArrayList<String>(Arrays.asList(args))); |
| } catch (IOException | RemoteException ex) { |
| Slog.d(TAG, "error while reading face debugging data", ex); |
| } finally { |
| if (devnull != null) { |
| try { |
| devnull.close(); |
| } catch (IOException ex) { |
| } |
| } |
| } |
| } |
| } |
| } |
