| /* |
| * Copyright (C) 2018 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.common; |
| |
| import android.content.Context; |
| import android.hardware.biometrics.BiometricConstants; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| |
| import com.android.server.biometrics.fingerprint.FingerprintUtils; |
| |
| import java.util.Arrays; |
| |
| /** |
| * A class to keep track of the enrollment state for a given client. |
| */ |
| public abstract class EnrollClient extends ClientMonitor { |
| private static final long MS_PER_SEC = 1000; |
| private static final int ENROLLMENT_TIMEOUT_MS = 60 * 1000; // 1 minute |
| private byte[] mCryptoToken; |
| |
| public EnrollClient(Context context, Metrics metrics, BiometricService.DaemonWrapper daemon, |
| long halDeviceId, IBinder token, BiometricService.ServiceListener listener, int userId, |
| int groupId, byte[] cryptoToken, boolean restricted, String owner) { |
| super(context, metrics, daemon, halDeviceId, token, listener, userId, groupId, restricted, |
| owner); |
| mCryptoToken = Arrays.copyOf(cryptoToken, cryptoToken.length); |
| } |
| |
| @Override |
| public boolean onEnrollResult(int fingerId, int groupId, int remaining) { |
| if (groupId != getGroupId()) { |
| Slog.w(getLogTag(), "groupId != getGroupId(), groupId: " + groupId + |
| " getGroupId():" + getGroupId()); |
| } |
| if (remaining == 0) { |
| // TODO: handle other biometrics |
| FingerprintUtils.getInstance().addFingerprintForUser(getContext(), fingerId, |
| getTargetUserId()); |
| } |
| return sendEnrollResult(fingerId, groupId, remaining); |
| } |
| |
| /* |
| * @return true if we're done. |
| */ |
| private boolean sendEnrollResult(int fpId, int groupId, int remaining) { |
| vibrateSuccess(); |
| mMetricsLogger.action(mMetrics.actionBiometricEnroll()); |
| try { |
| getListener().onEnrollResult(getHalDeviceId(), fpId, groupId, remaining); |
| return remaining == 0; |
| } catch (RemoteException e) { |
| Slog.w(getLogTag(), "Failed to notify EnrollResult:", e); |
| return true; |
| } |
| } |
| |
| @Override |
| public int start() { |
| final int timeout = (int) (ENROLLMENT_TIMEOUT_MS / MS_PER_SEC); |
| try { |
| final int result = getDaemonWrapper().enroll(mCryptoToken, getGroupId(), timeout); |
| if (result != 0) { |
| Slog.w(getLogTag(), "startEnroll failed, result=" + result); |
| mMetricsLogger.histogram(mMetrics.tagEnrollStartError(), result); |
| onError(BiometricConstants.BIOMETRIC_ERROR_HW_UNAVAILABLE, 0 /* vendorCode */); |
| return result; |
| } |
| } catch (RemoteException e) { |
| Slog.e(getLogTag(), "startEnroll failed", e); |
| } |
| return 0; // success |
| } |
| |
| @Override |
| public int stop(boolean initiatedByClient) { |
| if (mAlreadyCancelled) { |
| Slog.w(getLogTag(), "stopEnroll: already cancelled!"); |
| return 0; |
| } |
| |
| try { |
| final int result = getDaemonWrapper().cancel(); |
| if (result != 0) { |
| Slog.w(getLogTag(), "startEnrollCancel failed, result = " + result); |
| return result; |
| } |
| } catch (RemoteException e) { |
| Slog.e(getLogTag(), "stopEnrollment failed", e); |
| } |
| if (initiatedByClient) { |
| onError(BiometricConstants.BIOMETRIC_ERROR_CANCELED, 0 /* vendorCode */); |
| } |
| mAlreadyCancelled = true; |
| return 0; |
| } |
| |
| @Override |
| public boolean onRemoved(int fingerId, int groupId, int remaining) { |
| if (DEBUG) Slog.w(getLogTag(), "onRemoved() called for enroll!"); |
| return true; // Invalid for EnrollClient |
| } |
| |
| @Override |
| public boolean onEnumerationResult(int fingerId, int groupId, int remaining) { |
| if (DEBUG) Slog.w(getLogTag(), "onEnumerationResult() called for enroll!"); |
| return true; // Invalid for EnrollClient |
| } |
| |
| @Override |
| public boolean onAuthenticated(int fingerId, int groupId) { |
| if (DEBUG) Slog.w(getLogTag(), "onAuthenticated() called for enroll!"); |
| return true; // Invalid for EnrollClient |
| } |
| |
| } |