| /* |
| * Copyright (C) 2014 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.fingerprint; |
| |
| import static android.Manifest.permission.INTERACT_ACROSS_USERS; |
| import static android.Manifest.permission.MANAGE_BIOMETRIC; |
| import static android.Manifest.permission.MANAGE_FINGERPRINT; |
| import static android.Manifest.permission.RESET_FINGERPRINT_LOCKOUT; |
| import static android.Manifest.permission.USE_BIOMETRIC; |
| import static android.Manifest.permission.USE_BIOMETRIC_INTERNAL; |
| import static android.Manifest.permission.USE_FINGERPRINT; |
| import static android.hardware.biometrics.BiometricAuthenticator.TYPE_FINGERPRINT; |
| |
| import android.app.ActivityManager; |
| import android.app.AlarmManager; |
| import android.app.AppOpsManager; |
| import android.app.PendingIntent; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.content.pm.UserInfo; |
| import android.hardware.biometrics.BiometricAuthenticator; |
| import android.hardware.biometrics.BiometricConstants; |
| import android.hardware.biometrics.BiometricsProtoEnums; |
| import android.hardware.biometrics.IBiometricServiceLockoutResetCallback; |
| import android.hardware.biometrics.IBiometricServiceReceiverInternal; |
| import android.hardware.biometrics.fingerprint.V2_1.IBiometricsFingerprint; |
| import android.hardware.biometrics.fingerprint.V2_2.IBiometricsFingerprintClientCallback; |
| import android.hardware.fingerprint.Fingerprint; |
| import android.hardware.fingerprint.FingerprintManager; |
| import android.hardware.fingerprint.IFingerprintClientActiveCallback; |
| import android.hardware.fingerprint.IFingerprintService; |
| import android.hardware.fingerprint.IFingerprintServiceReceiver; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Environment; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.SELinux; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Slog; |
| import android.util.SparseBooleanArray; |
| import android.util.SparseIntArray; |
| import android.util.proto.ProtoOutputStream; |
| |
| 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.AuthenticationClient; |
| import com.android.server.biometrics.BiometricServiceBase; |
| import com.android.server.biometrics.BiometricUtils; |
| import com.android.server.biometrics.ClientMonitor; |
| import com.android.server.biometrics.Constants; |
| import com.android.server.biometrics.EnumerateClient; |
| import com.android.server.biometrics.RemovalClient; |
| |
| import org.json.JSONArray; |
| import org.json.JSONException; |
| import org.json.JSONObject; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| /** |
| * A service to manage multiple clients that want to access the fingerprint HAL API. |
| * The service is responsible for maintaining a list of clients and dispatching all |
| * fingerprint-related events. |
| * |
| * @hide |
| */ |
| public class FingerprintService extends BiometricServiceBase { |
| |
| protected static final String TAG = "FingerprintService"; |
| private static final boolean DEBUG = true; |
| private static final String FP_DATA_DIR = "fpdata"; |
| private static final String ACTION_LOCKOUT_RESET = |
| "com.android.server.biometrics.fingerprint.ACTION_LOCKOUT_RESET"; |
| private static final int MAX_FAILED_ATTEMPTS_LOCKOUT_TIMED = 5; |
| private static final int MAX_FAILED_ATTEMPTS_LOCKOUT_PERMANENT = 20; |
| private static final long FAIL_LOCKOUT_TIMEOUT_MS = 30 * 1000; |
| private static final String KEY_LOCKOUT_RESET_USER = "lockout_reset_user"; |
| |
| private final class ResetFailedAttemptsForUserRunnable implements Runnable { |
| @Override |
| public void run() { |
| resetFailedAttemptsForUser(true /* clearAttemptCounter */, |
| ActivityManager.getCurrentUser()); |
| } |
| } |
| |
| private final class LockoutReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| Slog.v(getTag(), "Resetting lockout: " + intent.getAction()); |
| if (getLockoutResetIntent().equals(intent.getAction())) { |
| final int user = intent.getIntExtra(KEY_LOCKOUT_RESET_USER, 0); |
| resetFailedAttemptsForUser(false /* clearAttemptCounter */, user); |
| } |
| } |
| } |
| |
| private final class FingerprintAuthClient extends AuthenticationClientImpl { |
| @Override |
| protected boolean isFingerprint() { |
| return true; |
| } |
| |
| public FingerprintAuthClient(Context context, |
| DaemonWrapper daemon, long halDeviceId, IBinder token, |
| ServiceListener listener, int targetUserId, int groupId, long opId, |
| boolean restricted, String owner, int cookie, |
| boolean requireConfirmation) { |
| super(context, daemon, halDeviceId, token, listener, targetUserId, groupId, opId, |
| restricted, owner, cookie, requireConfirmation); |
| } |
| |
| @Override |
| protected int statsModality() { |
| return FingerprintService.this.statsModality(); |
| } |
| |
| @Override |
| public void resetFailedAttempts() { |
| resetFailedAttemptsForUser(true /* clearAttemptCounter */, |
| ActivityManager.getCurrentUser()); |
| } |
| |
| @Override |
| public boolean shouldFrameworkHandleLockout() { |
| return true; |
| } |
| |
| @Override |
| public boolean wasUserDetected() { |
| // TODO: Return a proper value for devices that use ERROR_TIMEOUT |
| return false; |
| } |
| |
| @Override |
| public boolean isStrongBiometric() { |
| return FingerprintService.this.isStrongBiometric(); |
| } |
| |
| @Override |
| public int handleFailedAttempt() { |
| final int currentUser = ActivityManager.getCurrentUser(); |
| mFailedAttempts.put(currentUser, mFailedAttempts.get(currentUser, 0) + 1); |
| mTimedLockoutCleared.put(ActivityManager.getCurrentUser(), false); |
| |
| if (getLockoutMode() != AuthenticationClient.LOCKOUT_NONE) { |
| scheduleLockoutResetForUser(currentUser); |
| } |
| |
| return super.handleFailedAttempt(); |
| } |
| } |
| |
| /** |
| * Receives the incoming binder calls from FingerprintManager. |
| */ |
| private final class FingerprintServiceWrapper extends IFingerprintService.Stub { |
| private static final int ENROLL_TIMEOUT_SEC = 60; |
| |
| /** |
| * The following methods contain common code which is shared in biometrics/common. |
| */ |
| |
| @Override // Binder call |
| public long preEnroll(IBinder token) { |
| checkPermission(MANAGE_FINGERPRINT); |
| return startPreEnroll(token); |
| } |
| |
| @Override // Binder call |
| public int postEnroll(IBinder token) { |
| checkPermission(MANAGE_FINGERPRINT); |
| return startPostEnroll(token); |
| } |
| |
| @Override // Binder call |
| public void enroll(final IBinder token, final byte[] cryptoToken, final int userId, |
| final IFingerprintServiceReceiver receiver, final int flags, |
| final String opPackageName) { |
| checkPermission(MANAGE_FINGERPRINT); |
| |
| final boolean restricted = isRestricted(); |
| final int groupId = userId; // default group for fingerprint enrollment |
| final EnrollClientImpl client = new EnrollClientImpl(getContext(), mDaemonWrapper, |
| mHalDeviceId, token, new ServiceListenerImpl(receiver), mCurrentUserId, groupId, |
| cryptoToken, restricted, opPackageName, new int[0] /* disabledFeatures */, |
| ENROLL_TIMEOUT_SEC) { |
| @Override |
| public boolean shouldVibrate() { |
| return true; |
| } |
| |
| @Override |
| protected int statsModality() { |
| return FingerprintService.this.statsModality(); |
| } |
| }; |
| |
| enrollInternal(client, userId); |
| } |
| |
| @Override // Binder call |
| public void cancelEnrollment(final IBinder token) { |
| checkPermission(MANAGE_FINGERPRINT); |
| cancelEnrollmentInternal(token); |
| } |
| |
| @Override // Binder call |
| public void authenticate(final IBinder token, final long opId, final int groupId, |
| final IFingerprintServiceReceiver receiver, final int flags, |
| final String opPackageName) { |
| updateActiveGroup(groupId, opPackageName); |
| final boolean restricted = isRestricted(); |
| final AuthenticationClientImpl client = new FingerprintAuthClient(getContext(), |
| mDaemonWrapper, mHalDeviceId, token, new ServiceListenerImpl(receiver), |
| mCurrentUserId, groupId, opId, restricted, opPackageName, |
| 0 /* cookie */, false /* requireConfirmation */); |
| authenticateInternal(client, opId, opPackageName); |
| } |
| |
| @Override // Binder call |
| public void prepareForAuthentication(IBinder token, long opId, int groupId, |
| IBiometricServiceReceiverInternal wrapperReceiver, String opPackageName, |
| int cookie, int callingUid, int callingPid, int callingUserId) { |
| checkPermission(MANAGE_BIOMETRIC); |
| updateActiveGroup(groupId, opPackageName); |
| final boolean restricted = true; // BiometricPrompt is always restricted |
| final AuthenticationClientImpl client = new FingerprintAuthClient(getContext(), |
| mDaemonWrapper, mHalDeviceId, token, |
| new BiometricPromptServiceListenerImpl(wrapperReceiver), |
| mCurrentUserId, groupId, opId, restricted, opPackageName, cookie, |
| false /* requireConfirmation */); |
| authenticateInternal(client, opId, opPackageName, callingUid, callingPid, |
| callingUserId); |
| } |
| |
| @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) { |
| cancelAuthenticationInternal(token, opPackageName); |
| } |
| |
| @Override // Binder call |
| public void cancelAuthenticationFromService(final IBinder token, final String opPackageName, |
| int callingUid, int callingPid, int callingUserId, boolean fromClient) { |
| checkPermission(MANAGE_BIOMETRIC); |
| cancelAuthenticationInternal(token, opPackageName, callingUid, callingPid, |
| callingUserId, fromClient); |
| } |
| |
| @Override // Binder call |
| public void setActiveUser(final int userId) { |
| checkPermission(MANAGE_FINGERPRINT); |
| setActiveUserInternal(userId); |
| } |
| |
| @Override // Binder call |
| public void remove(final IBinder token, final int fingerId, final int groupId, |
| final int userId, final IFingerprintServiceReceiver receiver) { |
| checkPermission(MANAGE_FINGERPRINT); |
| |
| if (token == null) { |
| Slog.w(TAG, "remove(): token is null"); |
| return; |
| } |
| |
| final boolean restricted = isRestricted(); |
| final RemovalClient client = new RemovalClient(getContext(), getConstants(), |
| mDaemonWrapper, mHalDeviceId, token, new ServiceListenerImpl(receiver), |
| fingerId, groupId, userId, restricted, token.toString(), getBiometricUtils()) { |
| @Override |
| protected int statsModality() { |
| return FingerprintService.this.statsModality(); |
| } |
| }; |
| removeInternal(client); |
| } |
| |
| @Override // Binder call |
| public void enumerate(final IBinder token, final int userId, |
| final IFingerprintServiceReceiver receiver) { |
| checkPermission(MANAGE_FINGERPRINT); |
| |
| final boolean restricted = isRestricted(); |
| final EnumerateClient client = new EnumerateClient(getContext(), getConstants(), |
| mDaemonWrapper, mHalDeviceId, token, new ServiceListenerImpl(receiver), userId, |
| userId, restricted, getContext().getOpPackageName()) { |
| @Override |
| protected int statsModality() { |
| return FingerprintService.this.statsModality(); |
| } |
| }; |
| enumerateInternal(client); |
| } |
| |
| @Override |
| public void addLockoutResetCallback(final IBiometricServiceLockoutResetCallback callback) |
| throws RemoteException { |
| FingerprintService.super.addLockoutResetCallback(callback); |
| } |
| |
| @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 > 0 && "--proto".equals(args[0])) { |
| dumpProto(fd); |
| } 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) { |
| if (!canUseBiometric(opPackageName, false /* foregroundOnly */, |
| Binder.getCallingUid(), Binder.getCallingPid(), |
| UserHandle.getCallingUserId())) { |
| return false; |
| } |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| return daemon != null && mHalDeviceId != 0; |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override // Binder call |
| public void rename(final int fingerId, final int groupId, final String name) { |
| checkPermission(MANAGE_FINGERPRINT); |
| if (!isCurrentUserOrProfile(groupId)) { |
| return; |
| } |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| getBiometricUtils().renameBiometricForUser(getContext(), groupId, |
| fingerId, name); |
| } |
| }); |
| } |
| |
| @Override // Binder call |
| public List<Fingerprint> getEnrolledFingerprints(int userId, String opPackageName) { |
| if (!canUseBiometric(opPackageName, false /* foregroundOnly */, |
| Binder.getCallingUid(), Binder.getCallingPid(), |
| UserHandle.getCallingUserId())) { |
| return Collections.emptyList(); |
| } |
| |
| return FingerprintService.this.getEnrolledTemplates(userId); |
| } |
| |
| @Override // Binder call |
| public boolean hasEnrolledFingerprints(int userId, String opPackageName) { |
| if (!canUseBiometric(opPackageName, false /* foregroundOnly */, |
| Binder.getCallingUid(), Binder.getCallingPid(), |
| UserHandle.getCallingUserId())) { |
| return false; |
| } |
| |
| return FingerprintService.this.hasEnrolledBiometrics(userId); |
| } |
| |
| @Override // Binder call |
| public long getAuthenticatorId() { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| return FingerprintService.this.getAuthenticatorId(); |
| } |
| |
| @Override // Binder call |
| public void resetTimeout(byte [] token) { |
| checkPermission(RESET_FINGERPRINT_LOCKOUT); |
| |
| if (!FingerprintService.this.hasEnrolledBiometrics(mCurrentUserId)) { |
| Slog.w(TAG, "Ignoring lockout reset, no templates enrolled"); |
| return; |
| } |
| |
| // TODO: confirm security token when we move timeout management into the HAL layer. |
| mHandler.post(mResetFailedAttemptsForCurrentUserRunnable); |
| } |
| |
| @Override |
| public boolean isClientActive() { |
| checkPermission(MANAGE_FINGERPRINT); |
| synchronized(FingerprintService.this) { |
| return (getCurrentClient() != null) || (getPendingClient() != null); |
| } |
| } |
| |
| @Override |
| public void addClientActiveCallback(IFingerprintClientActiveCallback callback) { |
| checkPermission(MANAGE_FINGERPRINT); |
| mClientActiveCallbacks.add(callback); |
| } |
| |
| @Override |
| public void removeClientActiveCallback(IFingerprintClientActiveCallback callback) { |
| checkPermission(MANAGE_FINGERPRINT); |
| mClientActiveCallbacks.remove(callback); |
| } |
| |
| @Override // Binder call |
| public void initConfiguredStrength(int strength) { |
| checkPermission(USE_BIOMETRIC_INTERNAL); |
| initConfiguredStrengthInternal(strength); |
| } |
| } |
| |
| /** |
| * Receives callbacks from the ClientMonitor implementations. The results are forwarded to |
| * BiometricPrompt. |
| */ |
| private class BiometricPromptServiceListenerImpl extends BiometricServiceListener { |
| BiometricPromptServiceListenerImpl(IBiometricServiceReceiverInternal wrapperReceiver) { |
| super(wrapperReceiver); |
| } |
| |
| @Override |
| public void onAcquired(long deviceId, int acquiredInfo, int vendorCode) |
| throws RemoteException { |
| if (getWrapperReceiver() != null) { |
| getWrapperReceiver().onAcquired(acquiredInfo, FingerprintManager.getAcquiredString( |
| getContext(), acquiredInfo, vendorCode)); |
| } |
| } |
| |
| @Override |
| public void onError(long deviceId, int error, int vendorCode, int cookie) |
| throws RemoteException { |
| if (getWrapperReceiver() != null) { |
| getWrapperReceiver().onError(cookie, TYPE_FINGERPRINT, error, vendorCode); |
| } |
| } |
| } |
| |
| /** |
| * Receives callbacks from the ClientMonitor implementations. The results are forwarded to |
| * the FingerprintManager. |
| */ |
| private class ServiceListenerImpl implements ServiceListener { |
| private IFingerprintServiceReceiver mFingerprintServiceReceiver; |
| |
| public ServiceListenerImpl(IFingerprintServiceReceiver receiver) { |
| mFingerprintServiceReceiver = receiver; |
| } |
| |
| @Override |
| public void onEnrollResult(BiometricAuthenticator.Identifier identifier, int remaining) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| final Fingerprint fp = (Fingerprint) identifier; |
| mFingerprintServiceReceiver.onEnrollResult(fp.getDeviceId(), fp.getBiometricId(), |
| fp.getGroupId(), remaining); |
| } |
| } |
| |
| @Override |
| public void onAcquired(long deviceId, int acquiredInfo, int vendorCode) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| mFingerprintServiceReceiver.onAcquired(deviceId, acquiredInfo, vendorCode); |
| } |
| } |
| |
| @Override |
| public void onAuthenticationSucceeded(long deviceId, |
| BiometricAuthenticator.Identifier biometric, int userId) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| if (biometric == null || biometric instanceof Fingerprint) { |
| mFingerprintServiceReceiver.onAuthenticationSucceeded(deviceId, |
| (Fingerprint) biometric, userId, isStrongBiometric()); |
| } else { |
| Slog.e(TAG, "onAuthenticationSucceeded received non-fingerprint biometric"); |
| } |
| } |
| } |
| |
| @Override |
| public void onAuthenticationFailed(long deviceId) throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| mFingerprintServiceReceiver.onAuthenticationFailed(deviceId); |
| } |
| } |
| |
| @Override |
| public void onError(long deviceId, int error, int vendorCode, int cookie) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| mFingerprintServiceReceiver.onError(deviceId, error, vendorCode); |
| } |
| } |
| |
| @Override |
| public void onRemoved(BiometricAuthenticator.Identifier identifier, int remaining) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| final Fingerprint fp = (Fingerprint) identifier; |
| mFingerprintServiceReceiver.onRemoved(fp.getDeviceId(), fp.getBiometricId(), |
| fp.getGroupId(), remaining); |
| } |
| } |
| |
| @Override |
| public void onEnumerated(BiometricAuthenticator.Identifier identifier, int remaining) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| final Fingerprint fp = (Fingerprint) identifier; |
| mFingerprintServiceReceiver.onEnumerated(fp.getDeviceId(), fp.getBiometricId(), |
| fp.getGroupId(), remaining); |
| } |
| } |
| } |
| |
| private final FingerprintConstants mFingerprintConstants = new FingerprintConstants(); |
| private final CopyOnWriteArrayList<IFingerprintClientActiveCallback> mClientActiveCallbacks = |
| new CopyOnWriteArrayList<>(); |
| |
| @GuardedBy("this") |
| private IBiometricsFingerprint mDaemon; |
| private final SparseBooleanArray mTimedLockoutCleared; |
| private final SparseIntArray mFailedAttempts; |
| private final AlarmManager mAlarmManager; |
| private final LockoutReceiver mLockoutReceiver = new LockoutReceiver(); |
| protected final ResetFailedAttemptsForUserRunnable mResetFailedAttemptsForCurrentUserRunnable = |
| new ResetFailedAttemptsForUserRunnable(); |
| |
| /** |
| * Receives callbacks from the HAL. |
| */ |
| private IBiometricsFingerprintClientCallback mDaemonCallback = |
| new IBiometricsFingerprintClientCallback.Stub() { |
| @Override |
| public void onEnrollResult(final long deviceId, final int fingerId, final int groupId, |
| final int remaining) { |
| mHandler.post(() -> { |
| final Fingerprint fingerprint = |
| new Fingerprint(getBiometricUtils().getUniqueName(getContext(), groupId), |
| groupId, fingerId, deviceId); |
| FingerprintService.super.handleEnrollResult(fingerprint, remaining); |
| }); |
| } |
| |
| @Override |
| public void onAcquired(final long deviceId, final int acquiredInfo, final int vendorCode) { |
| onAcquired_2_2(deviceId, acquiredInfo, vendorCode); |
| } |
| |
| @Override |
| public void onAcquired_2_2(long deviceId, int acquiredInfo, int vendorCode) { |
| mHandler.post(() -> { |
| FingerprintService.super.handleAcquired(deviceId, acquiredInfo, vendorCode); |
| }); |
| } |
| |
| @Override |
| public void onAuthenticated(final long deviceId, final int fingerId, final int groupId, |
| ArrayList<Byte> token) { |
| mHandler.post(() -> { |
| Fingerprint fp = new Fingerprint("", groupId, fingerId, deviceId); |
| FingerprintService.super.handleAuthenticated(fp, token); |
| }); |
| } |
| |
| @Override |
| public void onError(final long deviceId, final int error, final int vendorCode) { |
| mHandler.post(() -> { |
| FingerprintService.super.handleError(deviceId, 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; |
| mHalDeviceId = 0; |
| mCurrentUserId = UserHandle.USER_NULL; |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void onRemoved(final long deviceId, final int fingerId, final int groupId, |
| final int remaining) { |
| mHandler.post(() -> { |
| ClientMonitor client = getCurrentClient(); |
| final Fingerprint fp = new Fingerprint("", groupId, fingerId, deviceId); |
| FingerprintService.super.handleRemoved(fp, remaining); |
| }); |
| } |
| |
| @Override |
| public void onEnumerate(final long deviceId, final int fingerId, final int groupId, |
| final int remaining) { |
| mHandler.post(() -> { |
| final Fingerprint fp = new Fingerprint("", groupId, fingerId, deviceId); |
| FingerprintService.super.handleEnumerate(fp, remaining); |
| }); |
| |
| } |
| }; |
| |
| /** |
| * Wraps the HAL-specific code and is passed to the ClientMonitor implementations so that they |
| * can be shared between the multiple biometric services. |
| */ |
| private final DaemonWrapper mDaemonWrapper = new DaemonWrapper() { |
| @Override |
| public int authenticate(long operationId, int groupId) throws RemoteException { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "authenticate(): no fingerprint HAL!"); |
| return ERROR_ESRCH; |
| } |
| return daemon.authenticate(operationId, groupId); |
| } |
| |
| @Override |
| public int cancel() throws RemoteException { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "cancel(): no fingerprint HAL!"); |
| return ERROR_ESRCH; |
| } |
| return daemon.cancel(); |
| } |
| |
| @Override |
| public int remove(int groupId, int biometricId) throws RemoteException { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "remove(): no fingerprint HAL!"); |
| return ERROR_ESRCH; |
| } |
| return daemon.remove(groupId, biometricId); |
| } |
| |
| @Override |
| public int enumerate() throws RemoteException { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "enumerate(): no fingerprint HAL!"); |
| return ERROR_ESRCH; |
| } |
| return daemon.enumerate(); |
| } |
| |
| @Override |
| public int enroll(byte[] cryptoToken, int groupId, int timeout, |
| ArrayList<Integer> disabledFeatures) throws RemoteException { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "enroll(): no fingerprint HAL!"); |
| return ERROR_ESRCH; |
| } |
| return daemon.enroll(cryptoToken, groupId, timeout); |
| } |
| |
| @Override |
| public void resetLockout(byte[] token) throws RemoteException { |
| // TODO: confirm security token when we move timeout management into the HAL layer. |
| Slog.e(TAG, "Not supported"); |
| return; |
| } |
| }; |
| |
| public FingerprintService(Context context) { |
| super(context); |
| mTimedLockoutCleared = new SparseBooleanArray(); |
| mFailedAttempts = new SparseIntArray(); |
| mAlarmManager = context.getSystemService(AlarmManager.class); |
| context.registerReceiver(mLockoutReceiver, new IntentFilter(getLockoutResetIntent()), |
| getLockoutBroadcastPermission(), null /* handler */); |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| publishBinderService(Context.FINGERPRINT_SERVICE, new FingerprintServiceWrapper()); |
| SystemServerInitThreadPool.submit(this::getFingerprintDaemon, TAG + ".onStart"); |
| } |
| |
| @Override |
| protected String getTag() { |
| return TAG; |
| } |
| |
| @Override |
| protected DaemonWrapper getDaemonWrapper() { |
| return mDaemonWrapper; |
| } |
| |
| @Override |
| protected BiometricUtils getBiometricUtils() { |
| return FingerprintUtils.getInstance(); |
| } |
| |
| @Override |
| protected Constants getConstants() { |
| return mFingerprintConstants; |
| } |
| |
| @Override |
| protected boolean hasReachedEnrollmentLimit(int userId) { |
| final int limit = getContext().getResources().getInteger( |
| com.android.internal.R.integer.config_fingerprintMaxTemplatesPerUser); |
| final int enrolled = FingerprintService.this.getEnrolledTemplates(userId).size(); |
| if (enrolled >= limit) { |
| Slog.w(TAG, "Too many fingerprints registered"); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void serviceDied(long cookie) { |
| super.serviceDied(cookie); |
| mDaemon = null; |
| } |
| |
| @Override |
| protected void updateActiveGroup(int userId, String clientPackage) { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| |
| if (daemon != null) { |
| try { |
| userId = getUserOrWorkProfileId(clientPackage, userId); |
| if (userId != mCurrentUserId) { |
| int firstSdkInt = Build.VERSION.FIRST_SDK_INT; |
| if (firstSdkInt < Build.VERSION_CODES.BASE) { |
| Slog.e(TAG, "First SDK version " + firstSdkInt + " is invalid; must be " + |
| "at least VERSION_CODES.BASE"); |
| } |
| File baseDir; |
| if (firstSdkInt <= Build.VERSION_CODES.O_MR1) { |
| baseDir = Environment.getUserSystemDirectory(userId); |
| } else { |
| baseDir = Environment.getDataVendorDeDirectory(userId); |
| } |
| |
| File fpDir = new File(baseDir, FP_DATA_DIR); |
| if (!fpDir.exists()) { |
| if (!fpDir.mkdir()) { |
| Slog.v(TAG, "Cannot make directory: " + fpDir.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(fpDir)) { |
| Slog.w(TAG, "Restorecons failed. Directory will have wrong label."); |
| return; |
| } |
| } |
| |
| daemon.setActiveGroup(userId, fpDir.getAbsolutePath()); |
| mCurrentUserId = userId; |
| } |
| mAuthenticatorIds.put(userId, |
| hasEnrolledBiometrics(userId) ? daemon.getAuthenticatorId() : 0L); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to setActiveGroup():", e); |
| } |
| } |
| } |
| |
| @Override |
| protected String getLockoutResetIntent() { |
| return ACTION_LOCKOUT_RESET; |
| } |
| |
| @Override |
| protected String getLockoutBroadcastPermission() { |
| return RESET_FINGERPRINT_LOCKOUT; |
| } |
| |
| @Override |
| protected long getHalDeviceId() { |
| return mHalDeviceId; |
| } |
| |
| @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_FINGERPRINT; |
| } |
| |
| @Override |
| protected void checkUseBiometricPermission() { |
| if (getContext().checkCallingPermission(USE_FINGERPRINT) |
| != PackageManager.PERMISSION_GRANTED) { |
| checkPermission(USE_BIOMETRIC); |
| } |
| } |
| |
| @Override |
| protected boolean checkAppOps(int uid, String opPackageName) { |
| boolean appOpsOk = false; |
| if (mAppOps.noteOp(AppOpsManager.OP_USE_BIOMETRIC, uid, opPackageName) |
| == AppOpsManager.MODE_ALLOWED) { |
| appOpsOk = true; |
| } else if (mAppOps.noteOp(AppOpsManager.OP_USE_FINGERPRINT, uid, opPackageName) |
| == AppOpsManager.MODE_ALLOWED) { |
| appOpsOk = true; |
| } |
| return appOpsOk; |
| } |
| |
| @Override |
| protected List<Fingerprint> getEnrolledTemplates(int userId) { |
| if (userId != UserHandle.getCallingUserId()) { |
| checkPermission(INTERACT_ACROSS_USERS); |
| } |
| return getBiometricUtils().getBiometricsForUser(getContext(), userId); |
| } |
| |
| @Override |
| protected void notifyClientActiveCallbacks(boolean isActive) { |
| List<IFingerprintClientActiveCallback> callbacks = mClientActiveCallbacks; |
| for (int i = 0; i < callbacks.size(); i++) { |
| try { |
| callbacks.get(i).onClientActiveChanged(isActive); |
| } catch (RemoteException re) { |
| // If the remote is dead, stop notifying it |
| mClientActiveCallbacks.remove(callbacks.get(i)); |
| } |
| } |
| } |
| |
| @Override |
| protected int statsModality() { |
| return BiometricsProtoEnums.MODALITY_FINGERPRINT; |
| } |
| |
| @Override |
| protected int getLockoutMode() { |
| final int currentUser = ActivityManager.getCurrentUser(); |
| final int failedAttempts = mFailedAttempts.get(currentUser, 0); |
| if (failedAttempts >= MAX_FAILED_ATTEMPTS_LOCKOUT_PERMANENT) { |
| return AuthenticationClient.LOCKOUT_PERMANENT; |
| } else if (failedAttempts > 0 |
| && !mTimedLockoutCleared.get(currentUser, false) |
| && (failedAttempts % MAX_FAILED_ATTEMPTS_LOCKOUT_TIMED == 0)) { |
| return AuthenticationClient.LOCKOUT_TIMED; |
| } |
| return AuthenticationClient.LOCKOUT_NONE; |
| } |
| |
| /** Gets the fingerprint daemon */ |
| private synchronized IBiometricsFingerprint getFingerprintDaemon() { |
| if (mDaemon == null) { |
| Slog.v(TAG, "mDaemon was null, reconnect to fingerprint"); |
| try { |
| mDaemon = IBiometricsFingerprint.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, "fingerprint HIDL not available"); |
| return null; |
| } |
| |
| mDaemon.asBinder().linkToDeath(this, 0); |
| |
| try { |
| mHalDeviceId = mDaemon.setNotify(mDaemonCallback); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to open fingerprint HAL", e); |
| mDaemon = null; // try again later! |
| } |
| |
| if (DEBUG) Slog.v(TAG, "Fingerprint HAL id: " + mHalDeviceId); |
| if (mHalDeviceId != 0) { |
| loadAuthenticatorIds(); |
| updateActiveGroup(ActivityManager.getCurrentUser(), null); |
| doTemplateCleanupForUser(ActivityManager.getCurrentUser()); |
| } else { |
| Slog.w(TAG, "Failed to open Fingerprint HAL!"); |
| MetricsLogger.count(getContext(), "fingerprintd_openhal_error", 1); |
| mDaemon = null; |
| } |
| } |
| return mDaemon; |
| } |
| |
| private long startPreEnroll(IBinder token) { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "startPreEnroll: no fingerprint HAL!"); |
| return 0; |
| } |
| try { |
| return daemon.preEnroll(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startPreEnroll failed", e); |
| } |
| return 0; |
| } |
| |
| private int startPostEnroll(IBinder token) { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "startPostEnroll: no fingerprint HAL!"); |
| return 0; |
| } |
| try { |
| return daemon.postEnroll(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startPostEnroll failed", e); |
| } |
| return 0; |
| } |
| |
| // Attempt counter should only be cleared when Keyguard goes away or when |
| // a biometric is successfully authenticated. Lockout should eventually be done below the HAL. |
| // See AuthenticationClient#shouldFrameworkHandleLockout(). |
| private void resetFailedAttemptsForUser(boolean clearAttemptCounter, int userId) { |
| if (DEBUG && getLockoutMode() != AuthenticationClient.LOCKOUT_NONE) { |
| Slog.v(getTag(), "Reset biometric lockout, clearAttemptCounter=" + clearAttemptCounter); |
| } |
| if (clearAttemptCounter) { |
| mFailedAttempts.put(userId, 0); |
| } |
| mTimedLockoutCleared.put(userId, true); |
| // If we're asked to reset failed attempts externally (i.e. from Keyguard), |
| // the alarm might still be pending; remove it. |
| cancelLockoutResetForUser(userId); |
| notifyLockoutResetMonitors(); |
| } |
| |
| |
| private void cancelLockoutResetForUser(int userId) { |
| mAlarmManager.cancel(getLockoutResetIntentForUser(userId)); |
| } |
| |
| private void scheduleLockoutResetForUser(int userId) { |
| mAlarmManager.setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP, |
| SystemClock.elapsedRealtime() + FAIL_LOCKOUT_TIMEOUT_MS, |
| getLockoutResetIntentForUser(userId)); |
| } |
| |
| private PendingIntent getLockoutResetIntentForUser(int userId) { |
| return PendingIntent.getBroadcast(getContext(), userId, |
| new Intent(getLockoutResetIntent()).putExtra(KEY_LOCKOUT_RESET_USER, userId), |
| PendingIntent.FLAG_UPDATE_CURRENT); |
| } |
| |
| private void dumpInternal(PrintWriter pw) { |
| JSONObject dump = new JSONObject(); |
| try { |
| dump.put("service", "Fingerprint 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(); |
| PerformanceStats stats = mPerformanceMap.get(userId); |
| PerformanceStats cryptoStats = mCryptoPerformanceMap.get(userId); |
| JSONObject set = new JSONObject(); |
| set.put("id", userId); |
| set.put("count", N); |
| set.put("accept", (stats != null) ? stats.accept : 0); |
| set.put("reject", (stats != null) ? stats.reject : 0); |
| set.put("acquire", (stats != null) ? stats.acquire : 0); |
| set.put("lockout", (stats != null) ? stats.lockout : 0); |
| set.put("permanentLockout", (stats != null) ? stats.permanentLockout : 0); |
| // cryptoStats measures statistics about secure fingerprint transactions |
| // (e.g. to unlock password storage, make secure purchases, etc.) |
| set.put("acceptCrypto", (cryptoStats != null) ? cryptoStats.accept : 0); |
| set.put("rejectCrypto", (cryptoStats != null) ? cryptoStats.reject : 0); |
| set.put("acquireCrypto", (cryptoStats != null) ? cryptoStats.acquire : 0); |
| set.put("lockoutCrypto", (cryptoStats != null) ? cryptoStats.lockout : 0); |
| set.put("permanentLockoutCrypto", |
| (cryptoStats != null) ? cryptoStats.permanentLockout : 0); |
| 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: " + mHALDeathCount); |
| } |
| |
| private void dumpProto(FileDescriptor fd) { |
| final ProtoOutputStream proto = new ProtoOutputStream(fd); |
| for (UserInfo user : UserManager.get(getContext()).getUsers()) { |
| final int userId = user.getUserHandle().getIdentifier(); |
| |
| final long userToken = proto.start(FingerprintServiceDumpProto.USERS); |
| |
| proto.write(FingerprintUserStatsProto.USER_ID, userId); |
| proto.write(FingerprintUserStatsProto.NUM_FINGERPRINTS, |
| getBiometricUtils().getBiometricsForUser(getContext(), userId).size()); |
| |
| // Normal fingerprint authentications (e.g. lockscreen) |
| final PerformanceStats normal = mPerformanceMap.get(userId); |
| if (normal != null) { |
| final long countsToken = proto.start(FingerprintUserStatsProto.NORMAL); |
| proto.write(PerformanceStatsProto.ACCEPT, normal.accept); |
| proto.write(PerformanceStatsProto.REJECT, normal.reject); |
| proto.write(PerformanceStatsProto.ACQUIRE, normal.acquire); |
| proto.write(PerformanceStatsProto.LOCKOUT, normal.lockout); |
| proto.write(PerformanceStatsProto.PERMANENT_LOCKOUT, normal.permanentLockout); |
| proto.end(countsToken); |
| } |
| |
| // Statistics about secure fingerprint transactions (e.g. to unlock password |
| // storage, make secure purchases, etc.) |
| final PerformanceStats crypto = mCryptoPerformanceMap.get(userId); |
| if (crypto != null) { |
| final long countsToken = proto.start(FingerprintUserStatsProto.CRYPTO); |
| proto.write(PerformanceStatsProto.ACCEPT, crypto.accept); |
| proto.write(PerformanceStatsProto.REJECT, crypto.reject); |
| proto.write(PerformanceStatsProto.ACQUIRE, crypto.acquire); |
| proto.write(PerformanceStatsProto.LOCKOUT, crypto.lockout); |
| proto.write(PerformanceStatsProto.PERMANENT_LOCKOUT, crypto.permanentLockout); |
| proto.end(countsToken); |
| } |
| |
| proto.end(userToken); |
| } |
| proto.flush(); |
| mPerformanceMap.clear(); |
| mCryptoPerformanceMap.clear(); |
| } |
| } |
