| /** |
| * 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.fingerprint; |
| |
| import android.app.ActivityManager; |
| import android.app.ActivityManagerNative; |
| import android.app.AppOpsManager; |
| import android.app.IUserSwitchObserver; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.pm.PackageManager; |
| import android.content.pm.UserInfo; |
| import android.os.Binder; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.IRemoteCallback; |
| import android.os.Looper; |
| import android.os.MessageQueue; |
| import android.os.PowerManager; |
| import android.os.RemoteException; |
| import android.os.SELinux; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Slog; |
| |
| import com.android.server.SystemService; |
| |
| import android.hardware.fingerprint.Fingerprint; |
| import android.hardware.fingerprint.FingerprintManager; |
| import android.hardware.fingerprint.IFingerprintService; |
| import android.hardware.fingerprint.IFingerprintDaemon; |
| import android.hardware.fingerprint.IFingerprintDaemonCallback; |
| import android.hardware.fingerprint.IFingerprintServiceReceiver; |
| |
| import static android.Manifest.permission.MANAGE_FINGERPRINT; |
| import static android.Manifest.permission.USE_FINGERPRINT; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.NoSuchElementException; |
| |
| /** |
| * 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 SystemService implements IBinder.DeathRecipient { |
| private static final String TAG = "FingerprintService"; |
| private static final boolean DEBUG = true; |
| private static final String FP_DATA_DIR = "fpdata"; |
| private static final String FINGERPRINTD = "android.hardware.fingerprint.IFingerprintDaemon"; |
| private static final int MSG_USER_SWITCHING = 10; |
| private static final int ENROLLMENT_TIMEOUT_MS = 60 * 1000; // 1 minute |
| |
| private ClientMonitor mAuthClient = null; |
| private ClientMonitor mEnrollClient = null; |
| private ClientMonitor mRemoveClient = null; |
| private final AppOpsManager mAppOps; |
| |
| private static final long MS_PER_SEC = 1000; |
| private static final long FAIL_LOCKOUT_TIMEOUT_MS = 30*1000; |
| private static final int MAX_FAILED_ATTEMPTS = 5; |
| private static final int FINGERPRINT_ACQUIRED_GOOD = 0; |
| |
| Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(android.os.Message msg) { |
| switch (msg.what) { |
| case MSG_USER_SWITCHING: |
| handleUserSwitching(msg.arg1); |
| break; |
| |
| default: |
| Slog.w(TAG, "Unknown message:" + msg.what); |
| } |
| } |
| }; |
| |
| private final FingerprintUtils mFingerprintUtils = FingerprintUtils.getInstance(); |
| private Context mContext; |
| private long mHalDeviceId; |
| private int mFailedAttempts; |
| private IFingerprintDaemon mDaemon; |
| private PowerManager mPowerManager; |
| |
| private final Runnable mLockoutReset = new Runnable() { |
| @Override |
| public void run() { |
| resetFailedAttempts(); |
| } |
| }; |
| |
| public FingerprintService(Context context) { |
| super(context); |
| mContext = context; |
| mAppOps = context.getSystemService(AppOpsManager.class); |
| mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); |
| } |
| |
| @Override |
| public void binderDied() { |
| Slog.v(TAG, "fingerprintd died"); |
| mDaemon = null; |
| dispatchError(mHalDeviceId, FingerprintManager.FINGERPRINT_ERROR_HW_UNAVAILABLE); |
| } |
| |
| public IFingerprintDaemon getFingerprintDaemon() { |
| if (mDaemon == null) { |
| mDaemon = IFingerprintDaemon.Stub.asInterface(ServiceManager.getService(FINGERPRINTD)); |
| if (mDaemon != null) { |
| try { |
| mDaemon.asBinder().linkToDeath(this, 0); |
| mDaemon.init(mDaemonCallback); |
| mHalDeviceId = mDaemon.openHal(); |
| if (mHalDeviceId != 0) { |
| updateActiveGroup(ActivityManager.getCurrentUser()); |
| } else { |
| Slog.w(TAG, "Failed to open Fingerprint HAL!"); |
| mDaemon = null; |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to open fingeprintd HAL", e); |
| mDaemon = null; // try again later! |
| } |
| } else { |
| Slog.w(TAG, "fingerprint service not available"); |
| } |
| } |
| return mDaemon; |
| } |
| |
| protected void dispatchEnumerate(long deviceId, int[] fingerIds, int[] groupIds) { |
| if (fingerIds.length != groupIds.length) { |
| Slog.w(TAG, "fingerIds and groupIds differ in length: f[]=" |
| + fingerIds + ", g[]=" + groupIds); |
| return; |
| } |
| if (DEBUG) Slog.w(TAG, "Enumerate: f[]=" + fingerIds + ", g[]=" + groupIds); |
| // TODO: update fingerprint/name pairs |
| } |
| |
| protected void dispatchRemoved(long deviceId, int fingerId, int groupId) { |
| final ClientMonitor client = mRemoveClient; |
| if (fingerId != 0) { |
| removeTemplateForUser(mRemoveClient, fingerId); |
| } |
| if (client != null && client.sendRemoved(fingerId, groupId)) { |
| removeClient(mRemoveClient); |
| } |
| } |
| |
| protected void dispatchError(long deviceId, int error) { |
| if (mEnrollClient != null) { |
| final IBinder token = mEnrollClient.token; |
| if (mEnrollClient.sendError(error)) { |
| stopEnrollment(token, false); |
| } |
| } else if (mAuthClient != null) { |
| final IBinder token = mAuthClient.token; |
| if (mAuthClient.sendError(error)) { |
| stopAuthentication(token, false); |
| } |
| } else if (mRemoveClient != null) { |
| if (mRemoveClient.sendError(error)) removeClient(mRemoveClient); |
| } |
| } |
| |
| protected void dispatchAuthenticated(long deviceId, int fingerId, int groupId) { |
| if (mAuthClient != null) { |
| final IBinder token = mAuthClient.token; |
| if (mAuthClient.sendAuthenticated(fingerId, groupId)) { |
| stopAuthentication(token, false); |
| removeClient(mAuthClient); |
| } |
| } |
| } |
| |
| protected void dispatchAcquired(long deviceId, int acquiredInfo) { |
| if (mEnrollClient != null) { |
| if (mEnrollClient.sendAcquired(acquiredInfo)) { |
| removeClient(mEnrollClient); |
| } |
| } else if (mAuthClient != null) { |
| if (mAuthClient.sendAcquired(acquiredInfo)) { |
| removeClient(mAuthClient); |
| } |
| } |
| } |
| |
| private void userActivity() { |
| long now = SystemClock.uptimeMillis(); |
| mPowerManager.userActivity(now, PowerManager.USER_ACTIVITY_EVENT_TOUCH, 0); |
| } |
| |
| void handleUserSwitching(int userId) { |
| updateActiveGroup(userId); |
| } |
| |
| protected void dispatchEnrollResult(long deviceId, int fingerId, int groupId, int remaining) { |
| if (mEnrollClient != null) { |
| if (mEnrollClient.sendEnrollResult(fingerId, groupId, remaining)) { |
| if (remaining == 0) { |
| addTemplateForUser(mEnrollClient, fingerId); |
| removeClient(mEnrollClient); |
| } |
| } |
| } |
| } |
| |
| private void removeClient(ClientMonitor client) { |
| if (client == null) return; |
| client.destroy(); |
| if (client == mAuthClient) { |
| mAuthClient = null; |
| } else if (client == mEnrollClient) { |
| mEnrollClient = null; |
| } else if (client == mRemoveClient) { |
| mRemoveClient = null; |
| } |
| } |
| |
| private boolean inLockoutMode() { |
| return mFailedAttempts > MAX_FAILED_ATTEMPTS; |
| } |
| |
| private void resetFailedAttempts() { |
| if (DEBUG && inLockoutMode()) { |
| Slog.v(TAG, "Reset fingerprint lockout"); |
| } |
| mFailedAttempts = 0; |
| } |
| |
| private boolean handleFailedAttempt(ClientMonitor clientMonitor) { |
| mFailedAttempts++; |
| if (mFailedAttempts > MAX_FAILED_ATTEMPTS) { |
| // Failing multiple times will continue to push out the lockout time. |
| mHandler.removeCallbacks(mLockoutReset); |
| mHandler.postDelayed(mLockoutReset, FAIL_LOCKOUT_TIMEOUT_MS); |
| if (clientMonitor != null |
| && !clientMonitor.sendError(FingerprintManager.FINGERPRINT_ERROR_LOCKOUT)) { |
| Slog.w(TAG, "Cannot send lockout message to client"); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| private void removeTemplateForUser(ClientMonitor clientMonitor, int fingerId) { |
| mFingerprintUtils.removeFingerprintIdForUser(mContext, fingerId, clientMonitor.userId); |
| } |
| |
| private void addTemplateForUser(ClientMonitor clientMonitor, int fingerId) { |
| mFingerprintUtils.addFingerprintForUser(mContext, fingerId, clientMonitor.userId); |
| } |
| |
| void startEnrollment(IBinder token, byte[] cryptoToken, int groupId, |
| IFingerprintServiceReceiver receiver, int flags, boolean restricted) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "enroll: no fingeprintd!"); |
| return; |
| } |
| stopPendingOperations(true); |
| mEnrollClient = new ClientMonitor(token, receiver, groupId, restricted); |
| final int timeout = (int) (ENROLLMENT_TIMEOUT_MS / MS_PER_SEC); |
| try { |
| final int result = daemon.enroll(cryptoToken, groupId, timeout); |
| if (result != 0) { |
| Slog.w(TAG, "startEnroll failed, result=" + result); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startEnroll failed", e); |
| } |
| } |
| |
| public long startPreEnroll(IBinder token) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "startPreEnroll: no fingeprintd!"); |
| return 0; |
| } |
| try { |
| return daemon.preEnroll(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startPreEnroll failed", e); |
| } |
| return 0; |
| } |
| |
| public int startPostEnroll(IBinder token) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "startPostEnroll: no fingeprintd!"); |
| return 0; |
| } |
| try { |
| return daemon.postEnroll(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startPostEnroll failed", e); |
| } |
| return 0; |
| } |
| |
| private void stopPendingOperations(boolean initiatedByClient) { |
| if (mEnrollClient != null) { |
| stopEnrollment(mEnrollClient.token, initiatedByClient); |
| } |
| if (mAuthClient != null) { |
| stopAuthentication(mAuthClient.token, initiatedByClient); |
| } |
| // mRemoveClient is allowed to continue |
| } |
| |
| /** |
| * Stop enrollment in progress and inform client if they initiated it. |
| * |
| * @param token token for client |
| * @param initiatedByClient if this call is the result of client action (e.g. calling cancel) |
| */ |
| void stopEnrollment(IBinder token, boolean initiatedByClient) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "stopEnrollment: no fingeprintd!"); |
| return; |
| } |
| final ClientMonitor client = mEnrollClient; |
| if (client == null || client.token != token) return; |
| if (initiatedByClient) { |
| try { |
| int result = daemon.cancelEnrollment(); |
| if (result != 0) { |
| Slog.w(TAG, "startEnrollCancel failed, result = " + result); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "stopEnrollment failed", e); |
| } |
| client.sendError(FingerprintManager.FINGERPRINT_ERROR_CANCELED); |
| } |
| removeClient(mEnrollClient); |
| } |
| |
| void startAuthentication(IBinder token, long opId, int groupId, |
| IFingerprintServiceReceiver receiver, int flags, boolean restricted) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "startAuthentication: no fingeprintd!"); |
| return; |
| } |
| stopPendingOperations(true); |
| mAuthClient = new ClientMonitor(token, receiver, groupId, restricted); |
| if (inLockoutMode()) { |
| Slog.v(TAG, "In lockout mode; disallowing authentication"); |
| if (!mAuthClient.sendError(FingerprintManager.FINGERPRINT_ERROR_LOCKOUT)) { |
| Slog.w(TAG, "Cannot send timeout message to client"); |
| } |
| mAuthClient = null; |
| return; |
| } |
| try { |
| final int result = daemon.authenticate(opId, groupId); |
| if (result != 0) { |
| Slog.w(TAG, "startAuthentication failed, result=" + result); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startAuthentication failed", e); |
| } |
| } |
| |
| /** |
| * Stop authentication in progress and inform client if they initiated it. |
| * |
| * @param token token for client |
| * @param initiatedByClient if this call is the result of client action (e.g. calling cancel) |
| */ |
| void stopAuthentication(IBinder token, boolean initiatedByClient) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "stopAuthentication: no fingeprintd!"); |
| return; |
| } |
| final ClientMonitor client = mAuthClient; |
| if (client == null || client.token != token) return; |
| if (initiatedByClient) { |
| try { |
| int result = daemon.cancelAuthentication(); |
| if (result != 0) { |
| Slog.w(TAG, "stopAuthentication failed, result=" + result); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "stopAuthentication failed", e); |
| } |
| client.sendError(FingerprintManager.FINGERPRINT_ERROR_CANCELED); |
| } |
| removeClient(mAuthClient); |
| } |
| |
| void startRemove(IBinder token, int fingerId, int userId, |
| IFingerprintServiceReceiver receiver, boolean restricted) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon == null) { |
| Slog.w(TAG, "startRemove: no fingeprintd!"); |
| return; |
| } |
| |
| mRemoveClient = new ClientMonitor(token, receiver, userId, restricted); |
| // The fingerprint template ids will be removed when we get confirmation from the HAL |
| try { |
| final int result = daemon.remove(fingerId, userId); |
| if (result != 0) { |
| Slog.w(TAG, "startRemove with id = " + fingerId + " failed, result=" + result); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "startRemove failed", e); |
| } |
| } |
| |
| public List<Fingerprint> getEnrolledFingerprints(int userId) { |
| return mFingerprintUtils.getFingerprintsForUser(mContext, userId); |
| } |
| |
| public boolean hasEnrolledFingerprints(int userId) { |
| return mFingerprintUtils.getFingerprintsForUser(mContext, userId).size() > 0; |
| } |
| |
| boolean hasPermission(String permission) { |
| return getContext().checkCallingOrSelfPermission(permission) |
| == PackageManager.PERMISSION_GRANTED; |
| } |
| |
| void checkPermission(String permission) { |
| getContext().enforceCallingOrSelfPermission(permission, |
| "Must have " + permission + " permission."); |
| } |
| |
| boolean isCurrentUserOrProfile(int userId) { |
| UserManager um = UserManager.get(mContext); |
| |
| // Allow current user or profiles of the current user... |
| List<UserInfo> profiles = um.getEnabledProfiles(userId); |
| final int n = profiles.size(); |
| for (int i = 0; i < n; i++) { |
| if (profiles.get(i).id == userId) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean canUseFingerprint(String opPackageName) { |
| checkPermission(USE_FINGERPRINT); |
| return mAppOps.noteOp(AppOpsManager.OP_USE_FINGERPRINT, Binder.getCallingUid(), |
| opPackageName) == AppOpsManager.MODE_ALLOWED; |
| } |
| |
| private class ClientMonitor implements IBinder.DeathRecipient { |
| IBinder token; |
| IFingerprintServiceReceiver receiver; |
| int userId; |
| boolean restricted; // True if client does not have MANAGE_FINGERPRINT permission |
| |
| public ClientMonitor(IBinder token, IFingerprintServiceReceiver receiver, int userId, |
| boolean restricted) { |
| this.token = token; |
| this.receiver = receiver; |
| this.userId = userId; |
| this.restricted = restricted; |
| try { |
| token.linkToDeath(this, 0); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "caught remote exception in linkToDeath: ", e); |
| } |
| } |
| |
| public void destroy() { |
| if (token != null) { |
| try { |
| token.unlinkToDeath(this, 0); |
| } catch (NoSuchElementException e) { |
| // TODO: remove when duplicate call bug is found |
| Slog.e(TAG, "destroy(): " + this + ":", new Exception("here")); |
| } |
| token = null; |
| } |
| receiver = null; |
| } |
| |
| @Override |
| public void binderDied() { |
| token = null; |
| removeClient(this); |
| receiver = null; |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| if (token != null) { |
| if (DEBUG) Slog.w(TAG, "removing leaked reference: " + token); |
| removeClient(this); |
| } |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| /* |
| * @return true if we're done. |
| */ |
| private boolean sendRemoved(int fingerId, int groupId) { |
| if (receiver == null) return true; // client not listening |
| try { |
| receiver.onRemoved(mHalDeviceId, fingerId, groupId); |
| return fingerId == 0; |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed to notify Removed:", e); |
| } |
| return false; |
| } |
| |
| /* |
| * @return true if we're done. |
| */ |
| private boolean sendEnrollResult(int fpId, int groupId, int remaining) { |
| if (receiver == null) return true; // client not listening |
| FingerprintUtils.vibrateFingerprintSuccess(getContext()); |
| try { |
| receiver.onEnrollResult(mHalDeviceId, fpId, groupId, remaining); |
| return remaining == 0; |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed to notify EnrollResult:", e); |
| return true; |
| } |
| } |
| |
| /* |
| * @return true if we're done. |
| */ |
| private boolean sendAuthenticated(int fpId, int groupId) { |
| boolean result = false; |
| boolean authenticated = fpId != 0; |
| if (receiver != null) { |
| try { |
| if (!authenticated) { |
| receiver.onAuthenticationFailed(mHalDeviceId); |
| } else { |
| Fingerprint fp = !restricted ? |
| new Fingerprint("" /* TODO */, groupId, fpId, mHalDeviceId) : null; |
| receiver.onAuthenticationSucceeded(mHalDeviceId, fp); |
| } |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed to notify Authenticated:", e); |
| result = true; // client failed |
| } |
| } else { |
| result = true; // client not listening |
| } |
| if (fpId == 0) { |
| FingerprintUtils.vibrateFingerprintError(getContext()); |
| result |= handleFailedAttempt(this); |
| } else { |
| FingerprintUtils.vibrateFingerprintSuccess(getContext()); |
| result |= true; // we have a valid fingerprint |
| mLockoutReset.run(); |
| } |
| return result; |
| } |
| |
| /* |
| * @return true if we're done. |
| */ |
| private boolean sendAcquired(int acquiredInfo) { |
| if (receiver == null) return true; // client not listening |
| try { |
| receiver.onAcquired(mHalDeviceId, acquiredInfo); |
| return false; // acquisition continues... |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed to invoke sendAcquired:", e); |
| return true; // client failed |
| } |
| finally { |
| // Good scans will keep the device awake |
| if (acquiredInfo == FINGERPRINT_ACQUIRED_GOOD) { |
| userActivity(); |
| } |
| } |
| } |
| |
| /* |
| * @return true if we're done. |
| */ |
| private boolean sendError(int error) { |
| if (receiver != null) { |
| try { |
| receiver.onError(mHalDeviceId, error); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed to invoke sendError:", e); |
| } |
| } |
| return true; // errors always terminate progress |
| } |
| } |
| |
| private IFingerprintDaemonCallback mDaemonCallback = new IFingerprintDaemonCallback.Stub() { |
| |
| @Override |
| public void onEnrollResult(long deviceId, int fingerId, int groupId, int remaining) { |
| dispatchEnrollResult(deviceId, fingerId, groupId, remaining); |
| } |
| |
| @Override |
| public void onAcquired(long deviceId, int acquiredInfo) { |
| dispatchAcquired(deviceId, acquiredInfo); |
| } |
| |
| @Override |
| public void onAuthenticated(long deviceId, int fingerId, int groupId) { |
| dispatchAuthenticated(deviceId, fingerId, groupId); |
| } |
| |
| @Override |
| public void onError(long deviceId, int error) { |
| dispatchError(deviceId, error); |
| } |
| |
| @Override |
| public void onRemoved(long deviceId, int fingerId, int groupId) { |
| dispatchRemoved(deviceId, fingerId, groupId); |
| } |
| |
| @Override |
| public void onEnumerate(long deviceId, int[] fingerIds, int[] groupIds) { |
| dispatchEnumerate(deviceId, fingerIds, groupIds); |
| } |
| |
| }; |
| |
| private final class FingerprintServiceWrapper extends IFingerprintService.Stub { |
| private static final String KEYGUARD_PACKAGE = "com.android.systemui"; |
| |
| @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 groupId, |
| final IFingerprintServiceReceiver receiver, final int flags) { |
| checkPermission(MANAGE_FINGERPRINT); |
| final int limit = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_fingerprintMaxTemplatesPerUser); |
| final int callingUid = Binder.getCallingUid(); |
| final int userId = UserHandle.getUserId(callingUid); |
| final int enrolled = FingerprintService.this.getEnrolledFingerprints(userId).size(); |
| if (enrolled >= limit) { |
| Slog.w(TAG, "Too many fingerprints registered"); |
| return; |
| } |
| final byte [] cryptoClone = Arrays.copyOf(cryptoToken, cryptoToken.length); |
| |
| final boolean restricted = isRestricted(); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| startEnrollment(token, cryptoClone, groupId, receiver, flags, restricted); |
| } |
| }); |
| } |
| |
| private boolean isRestricted() { |
| // Only give privileged apps (like Settings) access to fingerprint info |
| final boolean restricted = !hasPermission(MANAGE_FINGERPRINT); |
| return restricted; |
| } |
| |
| @Override // Binder call |
| public void cancelEnrollment(final IBinder token) { |
| checkPermission(MANAGE_FINGERPRINT); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| stopEnrollment(token, true); |
| } |
| }); |
| } |
| |
| @Override // Binder call |
| public void authenticate(final IBinder token, final long opId, final int groupId, |
| final IFingerprintServiceReceiver receiver, final int flags, |
| final String opPackageName) { |
| if (!isCurrentUserOrProfile(UserHandle.getCallingUserId())) { |
| Slog.w(TAG, "Can't authenticate non-current user"); |
| return; |
| } |
| if (!canUseFingerprint(opPackageName)) { |
| Slog.w(TAG, "Calling not granted permission to use fingerprint"); |
| return; |
| } |
| final boolean restricted = isRestricted(); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| startAuthentication(token, opId, groupId, receiver, flags, restricted); |
| } |
| }); |
| } |
| |
| @Override // Binder call |
| public void cancelAuthentication(final IBinder token, String opPackageName) { |
| if (!canUseFingerprint(opPackageName)) { |
| return; |
| } |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| stopAuthentication(token, true); |
| } |
| }); |
| } |
| |
| @Override // Binder call |
| public void remove(final IBinder token, final int fingerId, final int groupId, |
| final IFingerprintServiceReceiver receiver) { |
| checkPermission(MANAGE_FINGERPRINT); // TODO: Maybe have another permission |
| final boolean restricted = isRestricted(); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| startRemove(token, fingerId, groupId, receiver, restricted); |
| } |
| }); |
| |
| } |
| |
| @Override // Binder call |
| public boolean isHardwareDetected(long deviceId, String opPackageName) { |
| if (!canUseFingerprint(opPackageName)) { |
| return false; |
| } |
| return mHalDeviceId != 0; |
| } |
| |
| @Override // Binder call |
| public void rename(final int fingerId, final int groupId, final String name) { |
| checkPermission(MANAGE_FINGERPRINT); |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| mFingerprintUtils.renameFingerprintForUser(mContext, fingerId, groupId, name); |
| } |
| }); |
| } |
| |
| @Override // Binder call |
| public List<Fingerprint> getEnrolledFingerprints(int userId, String opPackageName) { |
| if (!canUseFingerprint(opPackageName)) { |
| return Collections.emptyList(); |
| } |
| return FingerprintService.this.getEnrolledFingerprints(userId); |
| } |
| |
| @Override // Binder call |
| public boolean hasEnrolledFingerprints(int groupId, String opPackageName) { |
| if (!canUseFingerprint(opPackageName)) { |
| return false; |
| } |
| return FingerprintService.this.hasEnrolledFingerprints(groupId); |
| } |
| |
| @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.this.getAuthenticatorId(); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| publishBinderService(Context.FINGERPRINT_SERVICE, new FingerprintServiceWrapper()); |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (DEBUG) Slog.v(TAG, "Fingerprint HAL id: " + mHalDeviceId); |
| listenForUserSwitches(); |
| } |
| |
| private void updateActiveGroup(int userId) { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon != null) { |
| try { |
| // TODO: if this is a managed profile, use the profile parent's directory for |
| // storage. |
| final File systemDir = Environment.getUserSystemDirectory(userId); |
| final File fpDir = new File(systemDir, 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().getBytes()); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Failed to setActiveGroup():", e); |
| } |
| } |
| } |
| |
| private void listenForUserSwitches() { |
| try { |
| ActivityManagerNative.getDefault().registerUserSwitchObserver( |
| new IUserSwitchObserver.Stub() { |
| @Override |
| public void onUserSwitching(int newUserId, IRemoteCallback reply) { |
| mHandler.obtainMessage(MSG_USER_SWITCHING, newUserId, 0 /* unused */) |
| .sendToTarget(); |
| } |
| @Override |
| public void onUserSwitchComplete(int newUserId) throws RemoteException { |
| // Ignore. |
| } |
| @Override |
| public void onForegroundProfileSwitch(int newProfileId) { |
| // Ignore. |
| } |
| }); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed to listen for user switching event" ,e); |
| } |
| } |
| |
| public long getAuthenticatorId() { |
| IFingerprintDaemon daemon = getFingerprintDaemon(); |
| if (daemon != null) { |
| try { |
| return daemon.getAuthenticatorId(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "getAuthenticatorId failed", e); |
| } |
| } |
| return 0; |
| } |
| |
| } |
