1 /* 2 * Copyright (C) 2018 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 android.hardware.biometrics; 18 19 import static android.hardware.biometrics.BiometricManager.Authenticators; 20 21 import android.annotation.IntDef; 22 import android.compat.annotation.UnsupportedAppUsage; 23 import android.os.Build; 24 25 import java.lang.annotation.Retention; 26 import java.lang.annotation.RetentionPolicy; 27 28 /** 29 * Interface containing all of the biometric modality agnostic constants. 30 * 31 * NOTE: The error messages must be consistent between BiometricConstants, Biometric*Constants, 32 * and the frameworks/support/biometric/.../BiometricConstants files. 33 * 34 * @hide 35 */ 36 public interface BiometricConstants { 37 // 38 // Error messages from biometric hardware during initilization, enrollment, authentication or 39 // removal. 40 // 41 42 /** 43 * This was not added here since it would update BiometricPrompt API. But, is used in 44 * BiometricManager. 45 * @hide 46 */ 47 int BIOMETRIC_SUCCESS = 0; 48 49 /** 50 * The hardware is unavailable. Try again later. 51 */ 52 int BIOMETRIC_ERROR_HW_UNAVAILABLE = 1; 53 54 /** 55 * Error state returned when the sensor was unable to process the current image. 56 */ 57 int BIOMETRIC_ERROR_UNABLE_TO_PROCESS = 2; 58 59 /** 60 * Error state returned when the current request has been running too long. This is intended to 61 * prevent programs from waiting for the biometric sensor indefinitely. The timeout is platform 62 * and sensor-specific, but is generally on the order of 30 seconds. 63 */ 64 int BIOMETRIC_ERROR_TIMEOUT = 3; 65 66 /** 67 * Error state returned for operations like enrollment; the operation cannot be completed 68 * because there's not enough storage remaining to complete the operation. 69 */ 70 int BIOMETRIC_ERROR_NO_SPACE = 4; 71 72 /** 73 * The operation was canceled because the biometric sensor is unavailable. For example, this may 74 * happen when the user is switched, the device is locked or another pending operation prevents 75 * or disables it. 76 */ 77 int BIOMETRIC_ERROR_CANCELED = 5; 78 79 /** 80 * The {@link BiometricManager#remove} call failed. Typically this will happen when the provided 81 * biometric id was incorrect. 82 * 83 * @hide 84 */ 85 int BIOMETRIC_ERROR_UNABLE_TO_REMOVE = 6; 86 87 /** 88 * The operation was canceled because the API is locked out due to too many attempts. 89 * This occurs after 5 failed attempts, and lasts for 30 seconds. 90 */ 91 int BIOMETRIC_ERROR_LOCKOUT = 7; 92 93 /** 94 * OEMs should use this constant if there are conditions that do not fit under any of the other 95 * publicly defined constants, and must provide appropriate strings for these 96 * errors to the {@link BiometricPrompt.AuthenticationCallback#onAuthenticationError(int, 97 * CharSequence)} callback. OEMs should expect that the error message will be shown to users. 98 */ 99 int BIOMETRIC_ERROR_VENDOR = 8; 100 101 /** 102 * The operation was canceled because BIOMETRIC_ERROR_LOCKOUT occurred too many times. 103 * Biometric authentication is disabled until the user unlocks with strong authentication 104 * (PIN/Pattern/Password) 105 */ 106 int BIOMETRIC_ERROR_LOCKOUT_PERMANENT = 9; 107 108 /** 109 * The user canceled the operation. Upon receiving this, applications should use alternate 110 * authentication (e.g. a password). The application should also provide the means to return to 111 * biometric authentication, such as a "use <biometric>" button. 112 */ 113 int BIOMETRIC_ERROR_USER_CANCELED = 10; 114 115 /** 116 * The user does not have any biometrics enrolled. 117 */ 118 int BIOMETRIC_ERROR_NO_BIOMETRICS = 11; 119 120 /** 121 * The device does not have a biometric sensor. 122 */ 123 int BIOMETRIC_ERROR_HW_NOT_PRESENT = 12; 124 125 /** 126 * The user pressed the negative button. This is a placeholder that is currently only used 127 * by the support library. 128 * @hide 129 */ 130 int BIOMETRIC_ERROR_NEGATIVE_BUTTON = 13; 131 132 /** 133 * The device does not have pin, pattern, or password set up. See 134 * {@link BiometricPrompt.Builder#setAllowedAuthenticators(int)}, 135 * {@link Authenticators#DEVICE_CREDENTIAL}, and {@link BiometricManager#canAuthenticate(int)}. 136 */ 137 int BIOMETRIC_ERROR_NO_DEVICE_CREDENTIAL = 14; 138 139 /** 140 * A security vulnerability has been discovered and the sensor is unavailable until a 141 * security update has addressed this issue. This error can be received if for example, 142 * authentication was requested with {@link Authenticators#BIOMETRIC_STRONG}, but the 143 * sensor's strength can currently only meet {@link Authenticators#BIOMETRIC_WEAK}. 144 */ 145 int BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED = 15; 146 147 /** 148 * Authentication cannot proceed because re-enrollment is required. 149 * @hide 150 */ 151 int BIOMETRIC_ERROR_RE_ENROLL = 16; 152 153 /** 154 * This constant is only used by SystemUI. It notifies SystemUI that authentication was paused 155 * because the authentication attempt was unsuccessful. 156 * @hide 157 */ 158 int BIOMETRIC_PAUSED_REJECTED = 100; 159 160 /** 161 * @hide 162 */ 163 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 164 int BIOMETRIC_ERROR_VENDOR_BASE = 1000; 165 166 @IntDef({BIOMETRIC_SUCCESS, 167 BIOMETRIC_ERROR_HW_UNAVAILABLE, 168 BIOMETRIC_ERROR_UNABLE_TO_PROCESS, 169 BIOMETRIC_ERROR_TIMEOUT, 170 BIOMETRIC_ERROR_NO_SPACE, 171 BIOMETRIC_ERROR_CANCELED, 172 BIOMETRIC_ERROR_UNABLE_TO_REMOVE, 173 BIOMETRIC_ERROR_LOCKOUT, 174 BIOMETRIC_ERROR_VENDOR, 175 BIOMETRIC_ERROR_LOCKOUT_PERMANENT, 176 BIOMETRIC_ERROR_USER_CANCELED, 177 BIOMETRIC_ERROR_NO_BIOMETRICS, 178 BIOMETRIC_ERROR_HW_NOT_PRESENT, 179 BIOMETRIC_ERROR_NEGATIVE_BUTTON, 180 BIOMETRIC_ERROR_NO_DEVICE_CREDENTIAL, 181 BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED, 182 BIOMETRIC_PAUSED_REJECTED}) 183 @Retention(RetentionPolicy.SOURCE) 184 @interface Errors {} 185 186 // 187 // Image acquisition messages. 188 // 189 190 /** 191 * @hide 192 */ 193 @IntDef({BIOMETRIC_ACQUIRED_GOOD, 194 BIOMETRIC_ACQUIRED_PARTIAL, 195 BIOMETRIC_ACQUIRED_INSUFFICIENT, 196 BIOMETRIC_ACQUIRED_IMAGER_DIRTY, 197 BIOMETRIC_ACQUIRED_TOO_SLOW, 198 BIOMETRIC_ACQUIRED_TOO_FAST, 199 BIOMETRIC_ACQUIRED_VENDOR}) 200 @Retention(RetentionPolicy.SOURCE) 201 @interface Acquired {} 202 203 /** 204 * The image acquired was good. 205 */ 206 int BIOMETRIC_ACQUIRED_GOOD = 0; 207 208 /** 209 * Only a partial biometric image was detected. During enrollment, the user should be informed 210 * on what needs to happen to resolve this problem, e.g. "press firmly on sensor." (for 211 * fingerprint) 212 */ 213 int BIOMETRIC_ACQUIRED_PARTIAL = 1; 214 215 /** 216 * The biometric image was too noisy to process due to a detected condition or a possibly dirty 217 * sensor (See {@link #BIOMETRIC_ACQUIRED_IMAGER_DIRTY}). 218 */ 219 int BIOMETRIC_ACQUIRED_INSUFFICIENT = 2; 220 221 /** 222 * The biometric image was too noisy due to suspected or detected dirt on the sensor. For 223 * example, it's reasonable return this after multiple {@link #BIOMETRIC_ACQUIRED_INSUFFICIENT} 224 * or actual detection of dirt on the sensor (stuck pixels, swaths, etc.). The user is expected 225 * to take action to clean the sensor when this is returned. 226 */ 227 int BIOMETRIC_ACQUIRED_IMAGER_DIRTY = 3; 228 229 /** 230 * The biometric image was unreadable due to lack of motion. 231 */ 232 int BIOMETRIC_ACQUIRED_TOO_SLOW = 4; 233 234 /** 235 * The biometric image was incomplete due to quick motion. For example, this could also happen 236 * if the user moved during acquisition. The user should be asked to repeat the operation more 237 * slowly. 238 */ 239 int BIOMETRIC_ACQUIRED_TOO_FAST = 5; 240 241 /** 242 * Hardware vendors may extend this list if there are conditions that do not fall under one of 243 * the above categories. Vendors are responsible for providing error strings for these errors. 244 * @hide 245 */ 246 int BIOMETRIC_ACQUIRED_VENDOR = 6; 247 /** 248 * @hide 249 */ 250 int BIOMETRIC_ACQUIRED_VENDOR_BASE = 1000; 251 252 // 253 // Internal messages. 254 // 255 256 /** 257 * See {@link BiometricPrompt.Builder#setReceiveSystemEvents(boolean)}. This message is sent 258 * immediately when the user cancels authentication for example by tapping the back button or 259 * tapping the scrim. This is before {@link #BIOMETRIC_ERROR_USER_CANCELED}, which is sent when 260 * dismissal animation completes. 261 * @hide 262 */ 263 int BIOMETRIC_SYSTEM_EVENT_EARLY_USER_CANCEL = 1; 264 265 } 266