Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.biometrics; |
| 18 | |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 19 | import android.content.Context; |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 20 | import android.hardware.biometrics.BiometricConstants; |
| 21 | import android.hardware.biometrics.BiometricsProtoEnums; |
| 22 | import android.hardware.face.FaceManager; |
| 23 | import android.util.Slog; |
| 24 | import android.util.StatsLog; |
| 25 | |
| 26 | /** |
| 27 | * Abstract class that adds logging functionality to the ClientMonitor classes. |
| 28 | */ |
| 29 | public abstract class LoggableMonitor { |
| 30 | |
| 31 | public static final String TAG = "BiometricStats"; |
Kevin Chyn | e5a37fb | 2019-02-08 13:10:36 -0800 | [diff] [blame] | 32 | public static final boolean DEBUG = false; |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 33 | |
| 34 | private long mFirstAcquireTimeMs; |
| 35 | |
Kevin Chyn | 9bc1d49 | 2019-06-21 15:31:50 -0700 | [diff] [blame] | 36 | protected long getFirstAcquireTimeMs() { |
| 37 | return mFirstAcquireTimeMs; |
| 38 | } |
| 39 | |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 40 | /** |
| 41 | * Only valid for AuthenticationClient. |
| 42 | * @return true if the client is authenticating for a crypto operation. |
| 43 | */ |
| 44 | protected boolean isCryptoOperation() { |
| 45 | return false; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * @return One of {@link BiometricsProtoEnums} MODALITY_* constants. |
| 50 | */ |
| 51 | protected abstract int statsModality(); |
| 52 | |
| 53 | /** |
| 54 | * Action == enroll, authenticate, remove, enumerate. |
| 55 | * @return One of {@link BiometricsProtoEnums} ACTION_* constants. |
| 56 | */ |
| 57 | protected abstract int statsAction(); |
| 58 | |
| 59 | /** |
| 60 | * Only matters for AuthenticationClient. Should only be overridden in |
| 61 | * {@link BiometricServiceBase}, which determines if a client is for BiometricPrompt, Keyguard, |
| 62 | * etc. |
| 63 | * @return one of {@link BiometricsProtoEnums} CLIENT_* constants. |
| 64 | */ |
| 65 | protected int statsClient() { |
| 66 | return BiometricsProtoEnums.CLIENT_UNKNOWN; |
| 67 | } |
| 68 | |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 69 | protected final void logOnAcquired(Context context, int acquiredInfo, int vendorCode, |
| 70 | int targetUserId) { |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 71 | if (statsModality() == BiometricsProtoEnums.MODALITY_FACE) { |
| 72 | if (acquiredInfo == FaceManager.FACE_ACQUIRED_START) { |
| 73 | mFirstAcquireTimeMs = System.currentTimeMillis(); |
| 74 | } |
| 75 | } else if (acquiredInfo == BiometricConstants.BIOMETRIC_ACQUIRED_GOOD) { |
| 76 | if (mFirstAcquireTimeMs == 0) { |
| 77 | mFirstAcquireTimeMs = System.currentTimeMillis(); |
| 78 | } |
| 79 | } |
| 80 | if (DEBUG) { |
| 81 | Slog.v(TAG, "Acquired! Modality: " + statsModality() |
| 82 | + ", User: " + targetUserId |
| 83 | + ", IsCrypto: " + isCryptoOperation() |
| 84 | + ", Action: " + statsAction() |
| 85 | + ", Client: " + statsClient() |
| 86 | + ", AcquiredInfo: " + acquiredInfo |
| 87 | + ", VendorCode: " + vendorCode); |
| 88 | } |
| 89 | StatsLog.write(StatsLog.BIOMETRIC_ACQUIRED, |
| 90 | statsModality(), |
| 91 | targetUserId, |
| 92 | isCryptoOperation(), |
| 93 | statsAction(), |
| 94 | statsClient(), |
| 95 | acquiredInfo, |
Kevin Chyn | f24ae8d | 2019-07-23 16:51:02 -0700 | [diff] [blame] | 96 | vendorCode, |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 97 | Utils.isDebugEnabled(context, targetUserId)); |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 98 | } |
| 99 | |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 100 | protected final void logOnError(Context context, int error, int vendorCode, int targetUserId) { |
Kevin Chyn | 7fca236 | 2019-06-20 17:20:42 -0700 | [diff] [blame] | 101 | |
| 102 | final long latency = mFirstAcquireTimeMs != 0 |
| 103 | ? (System.currentTimeMillis() - mFirstAcquireTimeMs) : -1; |
| 104 | |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 105 | if (DEBUG) { |
| 106 | Slog.v(TAG, "Error! Modality: " + statsModality() |
| 107 | + ", User: " + targetUserId |
| 108 | + ", IsCrypto: " + isCryptoOperation() |
| 109 | + ", Action: " + statsAction() |
| 110 | + ", Client: " + statsClient() |
| 111 | + ", Error: " + error |
Kevin Chyn | 7fca236 | 2019-06-20 17:20:42 -0700 | [diff] [blame] | 112 | + ", VendorCode: " + vendorCode |
| 113 | + ", Latency: " + latency); |
| 114 | } else { |
| 115 | Slog.v(TAG, "Error latency: " + latency); |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 116 | } |
| 117 | StatsLog.write(StatsLog.BIOMETRIC_ERROR_OCCURRED, |
| 118 | statsModality(), |
| 119 | targetUserId, |
| 120 | isCryptoOperation(), |
| 121 | statsAction(), |
| 122 | statsClient(), |
| 123 | error, |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 124 | vendorCode, |
Kevin Chyn | 7fca236 | 2019-06-20 17:20:42 -0700 | [diff] [blame] | 125 | Utils.isDebugEnabled(context, targetUserId), |
| 126 | latency); |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 127 | } |
| 128 | |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 129 | protected final void logOnAuthenticated(Context context, boolean authenticated, |
| 130 | boolean requireConfirmation, int targetUserId, boolean isBiometricPrompt) { |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 131 | int authState = StatsLog.BIOMETRIC_AUTHENTICATED__STATE__UNKNOWN; |
| 132 | if (!authenticated) { |
| 133 | authState = StatsLog.BIOMETRIC_AUTHENTICATED__STATE__REJECTED; |
| 134 | } else { |
| 135 | // Authenticated |
| 136 | if (isBiometricPrompt && requireConfirmation) { |
| 137 | authState = StatsLog.BIOMETRIC_AUTHENTICATED__STATE__PENDING_CONFIRMATION; |
| 138 | } else { |
| 139 | authState = StatsLog.BIOMETRIC_AUTHENTICATED__STATE__CONFIRMED; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | // Only valid if we have a first acquired time, otherwise set to -1 |
| 144 | final long latency = mFirstAcquireTimeMs != 0 |
| 145 | ? (System.currentTimeMillis() - mFirstAcquireTimeMs) |
| 146 | : -1; |
| 147 | |
| 148 | if (DEBUG) { |
| 149 | Slog.v(TAG, "Authenticated! Modality: " + statsModality() |
| 150 | + ", User: " + targetUserId |
| 151 | + ", IsCrypto: " + isCryptoOperation() |
| 152 | + ", Client: " + statsClient() |
| 153 | + ", RequireConfirmation: " + requireConfirmation |
| 154 | + ", State: " + authState |
| 155 | + ", Latency: " + latency); |
Kevin Chyn | e5a37fb | 2019-02-08 13:10:36 -0800 | [diff] [blame] | 156 | } else { |
| 157 | Slog.v(TAG, "Authentication latency: " + latency); |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | StatsLog.write(StatsLog.BIOMETRIC_AUTHENTICATED, |
| 161 | statsModality(), |
| 162 | targetUserId, |
| 163 | isCryptoOperation(), |
| 164 | statsClient(), |
| 165 | requireConfirmation, |
| 166 | authState, |
Kevin Chyn | 4858da4 | 2019-04-11 13:02:56 -0700 | [diff] [blame] | 167 | latency, |
| 168 | Utils.isDebugEnabled(context, targetUserId)); |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 169 | } |
joshmccloskey | 6f952b2 | 2019-03-25 20:59:35 -0700 | [diff] [blame] | 170 | |
| 171 | protected final void logOnEnrolled(int targetUserId, long latency, boolean enrollSuccessful) { |
| 172 | if (DEBUG) { |
| 173 | Slog.v(TAG, "Enrolled! Modality: " + statsModality() |
| 174 | + ", User: " + targetUserId |
| 175 | + ", Client: " + statsClient() |
| 176 | + ", Latency: " + latency |
| 177 | + ", Success: " + enrollSuccessful); |
| 178 | } else { |
| 179 | Slog.v(TAG, "Enroll latency: " + latency); |
| 180 | } |
| 181 | |
| 182 | StatsLog.write(StatsLog.BIOMETRIC_ENROLLED, |
| 183 | statsModality(), |
| 184 | targetUserId, |
| 185 | latency, |
| 186 | enrollSuccessful); |
| 187 | } |
| 188 | |
Kevin Chyn | 7782d14 | 2019-01-18 12:51:33 -0800 | [diff] [blame] | 189 | } |