| /* |
| * 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_FINGERPRINT; |
| import static android.Manifest.permission.RESET_FINGERPRINT_LOCKOUT; |
| import static android.Manifest.permission.USE_BIOMETRIC; |
| import static android.Manifest.permission.USE_FINGERPRINT; |
| |
| import android.app.ActivityManager; |
| import android.app.AppOpsManager; |
| import android.content.Context; |
| import android.content.pm.PackageManager; |
| import android.content.pm.UserInfo; |
| import android.hardware.biometrics.BiometricAuthenticator; |
| import android.hardware.biometrics.BiometricConstants; |
| import android.hardware.biometrics.IBiometricPromptReceiver; |
| import android.hardware.biometrics.IBiometricServiceLockoutResetCallback; |
| import android.hardware.biometrics.fingerprint.V2_1.IBiometricsFingerprint; |
| import android.hardware.biometrics.fingerprint.V2_1.IBiometricsFingerprintClientCallback; |
| import android.hardware.fingerprint.Fingerprint; |
| 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.Bundle; |
| import android.os.Environment; |
| import android.os.IBinder; |
| import android.os.PowerManager; |
| import android.os.RemoteException; |
| import android.os.SELinux; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Slog; |
| import android.util.proto.ProtoOutputStream; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.internal.statusbar.IStatusBarService; |
| import com.android.internal.util.DumpUtils; |
| import com.android.server.SystemServerInitThreadPool; |
| import com.android.server.biometrics.common.BiometricService; |
| import com.android.server.biometrics.common.BiometricUtils; |
| import com.android.server.biometrics.common.ClientMonitor; |
| import com.android.server.biometrics.common.EnumerateClient; |
| import com.android.server.biometrics.common.Metrics; |
| |
| 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 BiometricService { |
| |
| protected static final String TAG = "FingerprintService"; |
| private static final boolean DEBUG = true; |
| private static final boolean CLEANUP_UNUSED_FP = 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; |
| |
| // TODO: This should be refactored into BiometricService |
| private final class UserFingerprint { |
| Fingerprint f; |
| int userId; |
| public UserFingerprint(Fingerprint f, int userId) { |
| this.f = f; |
| this.userId = userId; |
| } |
| } |
| |
| /** |
| * Receives the incoming binder calls from FingerprintManager. |
| */ |
| private final class FingerprintServiceWrapper extends IFingerprintService.Stub { |
| |
| /** |
| * 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); |
| |
| 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, final Bundle bundle, |
| final IBiometricPromptReceiver dialogReceiver) { |
| final boolean restricted = isRestricted(); |
| final AuthenticationClientImpl client = new AuthenticationClientImpl(getContext(), |
| mDaemonWrapper, mHalDeviceId, token, new ServiceListenerImpl(receiver), |
| mCurrentUserId, groupId, opId, restricted, opPackageName, bundle, |
| dialogReceiver, mStatusBarService); |
| |
| authenticateInternal(client, opId, opPackageName); |
| } |
| |
| @Override // Binder call |
| public void cancelAuthentication(final IBinder token, final String opPackageName) { |
| cancelAuthenticationInternal(token, opPackageName); |
| } |
| |
| @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 RemovalClientImpl client = new RemovalClientImpl(getContext(), mDaemonWrapper, |
| mHalDeviceId, token, new ServiceListenerImpl(receiver), fingerId, groupId, |
| userId, restricted, token.toString()); |
| client.setShouldNotifyUserActivity(true); |
| 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 EnumerateClientImpl client = new EnumerateClientImpl(getContext(), mDaemonWrapper, |
| mHalDeviceId, token, new ServiceListenerImpl(receiver), userId, userId, |
| restricted, getContext().getOpPackageName()); |
| 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(long deviceId, 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.getEnrolledFingerprints(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(String opPackageName) { |
| // In this method, we're not checking whether the caller is permitted to use fingerprint |
| // API because current authenticator ID is leaked (in a more contrived way) via Android |
| // Keystore (android.security.keystore package): the user of that API can create a key |
| // which requires fingerprint authentication for its use, and then query the key's |
| // characteristics (hidden API) which returns, among other things, fingerprint |
| // authenticator ID which was active at key creation time. |
| // |
| // Reason: The part of Android Keystore which runs inside an app's process invokes this |
| // method in certain cases. Those cases are not always where the developer demonstrates |
| // explicit intent to use fingerprint functionality. Thus, to avoiding throwing an |
| // unexpected SecurityException this method does not check whether its caller is |
| // permitted to use fingerprint API. |
| // |
| // The permission check should be restored once Android Keystore no longer invokes this |
| // method from inside app processes. |
| |
| return FingerprintService.super.getAuthenticatorId(opPackageName); |
| } |
| |
| @Override // Binder call |
| public void resetTimeout(byte [] token) { |
| checkPermission(RESET_FINGERPRINT_LOCKOUT); |
| // 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); |
| } |
| } |
| |
| /** |
| * 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) { |
| // TODO: Pass up the fp directly instead |
| 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); |
| } 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) throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| mFingerprintServiceReceiver.onError(deviceId, error, vendorCode); |
| } |
| } |
| |
| @Override |
| public void onRemoved(BiometricAuthenticator.Identifier identifier, int remaining) |
| throws RemoteException { |
| if (mFingerprintServiceReceiver != null) { |
| // TODO: Pass up the fp directly instead |
| 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); |
| } |
| } |
| } |
| |
| /** |
| * An internal class to help clean up unknown fingerprints in the hardware and software. |
| */ |
| private final class InternalEnumerateClient extends BiometricService.EnumerateClientImpl { |
| |
| private List<Fingerprint> mEnrolledList; |
| private List<Fingerprint> mUnknownFingerprints = new ArrayList<>(); // list of fp to delete |
| |
| public InternalEnumerateClient(Context context, DaemonWrapper daemon, long halDeviceId, |
| IBinder token, ServiceListener listener, int groupId, int userId, |
| boolean restricted, String owner, List<Fingerprint> enrolledList) { |
| super(context, daemon, halDeviceId, token, listener, groupId, userId, restricted, |
| owner); |
| mEnrolledList = enrolledList; |
| } |
| |
| private void handleEnumeratedFingerprint( |
| BiometricAuthenticator.Identifier identifier, int remaining) { |
| boolean matched = false; |
| for (int i = 0; i < mEnrolledList.size(); i++) { |
| if (mEnrolledList.get(i).getBiometricId() == identifier.getBiometricId()) { |
| mEnrolledList.remove(i); |
| matched = true; |
| break; |
| } |
| } |
| |
| // fingerId 0 means no fingerprints are in hardware |
| if (!matched && identifier.getBiometricId() != 0) { |
| mUnknownFingerprints.add((Fingerprint) identifier); |
| } |
| } |
| |
| private void doFingerprintCleanup() { |
| if (mEnrolledList == null) { |
| return; |
| } |
| |
| for (Fingerprint f : mEnrolledList) { |
| Slog.e(TAG, "doFingerprintCleanup(): Removing dangling enrolled fingerprint: " |
| + f.getName() + " " + f.getBiometricId() + " " + f.getGroupId() |
| + " " + f.getDeviceId()); |
| FingerprintUtils.getInstance().removeBiometricForUser(getContext(), |
| getTargetUserId(), f.getBiometricId()); |
| } |
| mEnrolledList.clear(); |
| } |
| |
| public List<Fingerprint> getUnknownFingerprints() { |
| return mUnknownFingerprints; |
| } |
| |
| @Override |
| public boolean onEnumerationResult(BiometricAuthenticator.Identifier identifier, |
| int remaining) { |
| handleEnumeratedFingerprint(identifier, remaining); |
| if (remaining == 0) { |
| doFingerprintCleanup(); |
| } |
| return remaining == 0; |
| } |
| } |
| |
| /** |
| * An internal class to help clean up unknown fingerprints in hardware and software. |
| */ |
| private final class InternalRemovalClient extends BiometricService.RemovalClientImpl { |
| public InternalRemovalClient(Context context, |
| DaemonWrapper daemon, long halDeviceId, IBinder token, |
| ServiceListener listener, int fingerId, int groupId, int userId, boolean restricted, |
| String owner) { |
| super(context, daemon, halDeviceId, token, listener, fingerId, groupId, userId, |
| restricted, |
| owner); |
| } |
| } |
| |
| private final FingerprintMetrics mFingerprintMetrics = new FingerprintMetrics(); |
| private final CopyOnWriteArrayList<IFingerprintClientActiveCallback> mClientActiveCallbacks = |
| new CopyOnWriteArrayList<>(); |
| |
| @GuardedBy("this") |
| private IBiometricsFingerprint mDaemon; |
| |
| private long mHalDeviceId; |
| private IStatusBarService mStatusBarService; |
| private IBinder mToken = new Binder(); // used for internal FingerprintService enumeration |
| private ArrayList<UserFingerprint> mUnknownFingerprints = new ArrayList<>(); // hw fingerprints |
| |
| /** |
| * 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) { |
| 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(() -> { |
| ClientMonitor client = getCurrentClient(); |
| if (client instanceof InternalRemovalClient |
| || client instanceof InternalEnumerateClient) { |
| clearEnumerateState(); |
| } |
| 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); |
| if (client instanceof InternalRemovalClient && !mUnknownFingerprints.isEmpty()) { |
| cleanupUnknownFingerprints(); |
| } else if (client instanceof InternalRemovalClient){ |
| clearEnumerateState(); |
| } |
| }); |
| } |
| |
| @Override |
| public void onEnumerate(final long deviceId, final int fingerId, final int groupId, |
| final int remaining) { |
| mHandler.post(() -> { |
| // TODO: factor out common enumerate logic if possible |
| final Fingerprint fp = new Fingerprint("", groupId, fingerId, deviceId); |
| FingerprintService.this.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) throws RemoteException { |
| IBiometricsFingerprint daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "enroll(): no fingerprint HAL!"); |
| return ERROR_ESRCH; |
| } |
| return daemon.enroll(cryptoToken, groupId, timeout); |
| } |
| }; |
| |
| public FingerprintService(Context context) { |
| super(context); |
| // TODO: can this be retrieved from AuthenticationClient, or BiometricService? |
| mStatusBarService = IStatusBarService.Stub.asInterface( |
| ServiceManager.getService(Context.STATUS_BAR_SERVICE)); |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| publishBinderService(Context.FINGERPRINT_SERVICE, new FingerprintServiceWrapper()); |
| SystemServerInitThreadPool.get().submit(this::getFingerprintDaemon, TAG + ".onStart"); |
| } |
| |
| @Override |
| protected String getTag() { |
| return TAG; |
| } |
| |
| @Override |
| protected BiometricUtils getBiometricUtils() { |
| return FingerprintUtils.getInstance(); |
| } |
| |
| @Override |
| protected int getFailedAttemptsLockoutTimed() { |
| return MAX_FAILED_ATTEMPTS_LOCKOUT_TIMED; |
| } |
| |
| @Override |
| protected int getFailedAttemptsLockoutPermanent() { |
| return MAX_FAILED_ATTEMPTS_LOCKOUT_PERMANENT; |
| } |
| |
| @Override |
| protected Metrics getMetrics() { |
| return mFingerprintMetrics; |
| } |
| |
| @Override |
| protected boolean hasReachedEnrollmentLimit(int userId) { |
| final int limit = getContext().getResources().getInteger( |
| com.android.internal.R.integer.config_fingerprintMaxTemplatesPerUser); |
| final int enrolled = FingerprintService.this.getEnrolledFingerprints(userId).size(); |
| if (enrolled >= limit) { |
| Slog.w(TAG, "Too many fingerprints registered"); |
| return true; |
| } |
| return false; |
| } |
| |
| @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 void handleUserSwitching(int userId) { |
| if (getCurrentClient() instanceof InternalRemovalClient |
| || getCurrentClient() instanceof InternalEnumerateClient) { |
| Slog.w(TAG, "User switched while performing cleanup"); |
| removeClient(getCurrentClient()); |
| clearEnumerateState(); |
| } |
| updateActiveGroup(userId, null); |
| doFingerprintCleanupForUser(userId); |
| } |
| |
| |
| @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 int getAppOp() { |
| return AppOpsManager.OP_USE_FINGERPRINT; |
| } |
| |
| @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)); |
| } |
| } |
| } |
| |
| /** 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); |
| doFingerprintCleanupForUser(ActivityManager.getCurrentUser()); |
| } else { |
| Slog.w(TAG, "Failed to open Fingerprint HAL!"); |
| MetricsLogger.count(getContext(), "fingerprintd_openhal_error", 1); |
| mDaemon = null; |
| } |
| } |
| return mDaemon; |
| } |
| |
| /** |
| * This method should be called upon connection to the daemon, and when user switches. |
| * @param userId |
| */ |
| private void doFingerprintCleanupForUser(int userId) { |
| if (CLEANUP_UNUSED_FP) { |
| enumerateUser(userId); |
| } |
| } |
| |
| private void clearEnumerateState() { |
| if (DEBUG) Slog.v(TAG, "clearEnumerateState()"); |
| mUnknownFingerprints.clear(); |
| } |
| |
| private void enumerateUser(int userId) { |
| if (DEBUG) Slog.v(TAG, "Enumerating user(" + userId + ")"); |
| |
| final boolean restricted = !hasPermission(MANAGE_FINGERPRINT); |
| final List<Fingerprint> enrolledList = getEnrolledFingerprints(userId); |
| |
| InternalEnumerateClient client = new InternalEnumerateClient(getContext(), mDaemonWrapper, |
| mHalDeviceId, mToken, new ServiceListenerImpl(null), userId, userId, restricted, |
| getContext().getOpPackageName(), enrolledList); |
| enumerateInternal(client); |
| } |
| |
| // Remove unknown fingerprints from hardware |
| private void cleanupUnknownFingerprints() { |
| if (!mUnknownFingerprints.isEmpty()) { |
| UserFingerprint uf = mUnknownFingerprints.get(0); |
| mUnknownFingerprints.remove(uf); |
| boolean restricted = !hasPermission(MANAGE_FINGERPRINT); |
| InternalRemovalClient client = new InternalRemovalClient(getContext(), mDaemonWrapper, |
| mHalDeviceId, mToken, new ServiceListenerImpl(null), uf.f.getBiometricId(), |
| uf.f.getGroupId(), uf.userId, restricted, getContext().getOpPackageName()); |
| removeInternal(client); |
| } else { |
| clearEnumerateState(); |
| } |
| } |
| |
| private void handleEnumerate(Fingerprint fingerprint, int remaining) { |
| ClientMonitor client = getCurrentClient(); |
| |
| if ( !(client instanceof InternalRemovalClient) && !(client instanceof EnumerateClient) ) { |
| return; |
| } |
| client.onEnumerationResult(fingerprint, remaining); |
| |
| // All fingerprints in hardware for this user were enumerated |
| if (remaining == 0) { |
| if (client instanceof InternalEnumerateClient) { |
| List<Fingerprint> unknownFingerprints = |
| ((InternalEnumerateClient) client).getUnknownFingerprints(); |
| |
| if (!unknownFingerprints.isEmpty()) { |
| Slog.w(TAG, "Adding " + unknownFingerprints.size() + |
| " fingerprints for deletion"); |
| } |
| for (Fingerprint f : unknownFingerprints) { |
| mUnknownFingerprints.add(new UserFingerprint(f, client.getTargetUserId())); |
| } |
| removeClient(client); |
| cleanupUnknownFingerprints(); |
| } else { |
| removeClient(client); |
| } |
| } |
| } |
| |
| 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; |
| } |
| |
| private List<Fingerprint> getEnrolledFingerprints(int userId) { |
| return getBiometricUtils().getBiometricsForUser(getContext(), userId); |
| } |
| |
| 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); |
| } |
| |
| 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(); |
| } |
| } |