| /* |
| * Copyright 2020 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 androidx.biometric.auth |
| |
| import androidx.biometric.BiometricPrompt |
| import androidx.fragment.app.Fragment |
| import androidx.fragment.app.FragmentActivity |
| import java.util.concurrent.Executor |
| |
| /** |
| * Builds a [Class3BiometricAuthPrompt] hosted on the current [FragmentActivity], which configures a |
| * [BiometricPrompt] for authentication with Class 3 biometric modalities |
| * (fingerprint, iris, face, etc) and begins authentication. |
| * |
| * Class 3 (formerly known as Strong) refers to the strength of the biometric sensor, as specified |
| * in the Android 11 CDD. Class 3 authentication can be used for applications that use |
| * cryptographic operations. |
| * |
| * @param crypto A crypto object to be associated with this authentication. |
| * @param title The title to be displayed on the prompt. |
| * @param negativeButtonText The label to be used for the negative button on the prompt. |
| * @param executor The executor that will run authentication callback methods. If null, callback |
| * methods will be executed on the main thread. |
| * @param callback The object that will receive and process authentication events. |
| * @param subtitle The subtitle to be displayed on the prompt, null by default. |
| * @param description The description to be displayed on the prompt, null by default. |
| * @param confirmationRequired Whether explicit user confirmation is required after a passive |
| * biometric, true by default. |
| * @return [AuthPrompt] wrapper that can be used for cancellation and dismissal of the |
| * biometric prompt using [AuthPrompt]#cancelAuthentication() |
| */ |
| public fun FragmentActivity.startClass3BiometricAuthentication( |
| crypto: BiometricPrompt.CryptoObject?, |
| title: CharSequence, |
| negativeButtonText: CharSequence, |
| subtitle: CharSequence? = null, |
| description: CharSequence? = null, |
| confirmationRequired: Boolean = true, |
| executor: Executor? = null, |
| callback: AuthPromptCallback |
| ): AuthPrompt { |
| return startClass3BiometricAuthenticationInternal( |
| AuthPromptHost(this), |
| crypto, |
| title, |
| negativeButtonText, |
| subtitle, |
| description, |
| confirmationRequired, |
| executor, |
| callback |
| ) |
| } |
| |
| /** |
| * Builds a [Class3BiometricAuthPrompt] hosted on the current [Fragment], which configures a |
| * [BiometricPrompt] for authentication with Class 3 biometric modalities (fingerprint, iris, face, |
| * etc) and begins authentication. |
| * |
| * Class 3 (formerly known as Strong) refers to the strength of the biometric sensor, as specified |
| * in the Android 11 CDD. Class 3 authentication can be used for applications that use cryptographic |
| * operations. |
| * |
| * @param crypto A crypto object to be associated with this authentication. |
| * @param title The title to be displayed on the prompt. |
| * @param negativeButtonText The label to be used for the negative button on the prompt. |
| * @param executor The executor that will run authentication callback methods. If null, callback |
| * methods will be executed on the main thread. |
| * @param callback The object that will receive and process authentication events. |
| * @param subtitle The subtitle to be displayed on the prompt, null by default. |
| * @param description The description to be displayed on the prompt, null by default. |
| * @param confirmationRequired Whether explicit user confirmation is required after a passive |
| * biometric, true by default. |
| * @return [AuthPrompt] wrapper that can be used for cancellation and dismissal of the |
| * biometric prompt using [AuthPrompt]#cancelAuthentication() |
| */ |
| public fun Fragment.startClass3BiometricAuthentication( |
| crypto: BiometricPrompt.CryptoObject?, |
| title: CharSequence, |
| negativeButtonText: CharSequence, |
| subtitle: CharSequence? = null, |
| description: CharSequence? = null, |
| confirmationRequired: Boolean = true, |
| executor: Executor? = null, |
| callback: AuthPromptCallback |
| ): AuthPrompt { |
| return startClass3BiometricAuthenticationInternal( |
| AuthPromptHost(this), |
| crypto, |
| title, |
| negativeButtonText, |
| subtitle, |
| description, |
| confirmationRequired, |
| executor, |
| callback |
| ) |
| } |
| |
| /** |
| * Helper function for shared logic in [Fragment.startClass3BiometricAuthentication] and |
| * [FragmentActivity.startClass3BiometricAuthentication] for building the |
| * [Class3BiometricAuthPrompt], starting authentication, and returning the AuthPrompt wrapper for |
| * cancellation and dismissal of the biometric prompt using [AuthPrompt]#cancelAuthentication() |
| */ |
| private fun startClass3BiometricAuthenticationInternal( |
| authPromptHost: AuthPromptHost, |
| crypto: BiometricPrompt.CryptoObject?, |
| title: CharSequence, |
| negativeButtonText: CharSequence, |
| subtitle: CharSequence? = null, |
| description: CharSequence? = null, |
| confirmationRequired: Boolean = true, |
| executor: Executor? = null, |
| callback: AuthPromptCallback |
| ): AuthPrompt { |
| val class3BiometricAuthBuilder = |
| if (executor != null) { |
| Class3BiometricAuthPrompt.Builder( |
| authPromptHost, title, negativeButtonText, executor, callback |
| ) |
| } else { |
| Class3BiometricAuthPrompt.Builder( |
| authPromptHost, title, negativeButtonText, callback |
| ) |
| } |
| |
| return class3BiometricAuthBuilder.apply { |
| subtitle?.let { setSubtitle(it) } |
| description?.let { setDescription(it) } |
| setConfirmationRequired(confirmationRequired) |
| crypto?.let { setCrypto(it) } |
| }.build().startAuthentication() |
| } |