[fenix] For https://github.com/mozilla-mobile/fenix/issues/18264 - Add biometric prompt to credit card settings (https://github.com/mozilla-mobile/fenix/pull/19505)
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.settings.biometric
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import android.app.Activity.RESULT_OK
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import android.app.KeyguardManager
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import android.content.Context
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import android.content.Intent
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import android.view.View
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import androidx.core.content.getSystemService
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import androidx.preference.Preference
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import androidx.preference.PreferenceFragmentCompat
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import mozilla.components.support.base.feature.ViewBoundFeatureWrapper
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import org.mozilla.fenix.ext.settings
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import org.mozilla.fenix.settings.requirePreference
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/**
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* Helper for creating and implementing the [BiometricPromptFeature]. Currently used
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* for logins and credit cards.
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*/
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abstract class BiometricPromptPreferenceFragment : PreferenceFragmentCompat() {
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private val biometricPromptFeature = ViewBoundFeatureWrapper<BiometricPromptFeature>()
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/**
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* Gets the string to be used for [BiometricPromptFeature.requestAuthentication] prompting to
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* unlock the device.
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*/
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abstract fun unlockMessage(): String
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/**
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* Navigate when authentication is successful.
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*/
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abstract fun navigateOnSuccess()
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/**
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* Shows a dialog warning to set up a pin/password when the device is not secured. This is
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* only used when BiometricPrompt is unavailable on the device.
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*/
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abstract fun showPinDialogWarning(context: Context)
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/**
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* Toggle preferences to enable or disable navigation during authentication flows.
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*
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* @param prefList a list of [Preference]s to toggle.
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* @param enabled whether or not the preferences should be enabled.
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*/
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fun togglePrefsEnabled(prefList: List<Int>, enabled: Boolean) {
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for (preference in prefList) {
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requirePreference<Preference>(preference).isEnabled = enabled
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}
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}
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/**
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* Creates a prompt to verify the device's pin/password and start activity based on the result.
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* This is only used when BiometricPrompt is unavailable on the device.
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*/
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@Suppress("Deprecation")
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abstract fun showPinVerification(manager: KeyguardManager)
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/**
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* Sets the biometric prompt feature.
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*
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* @param view the view that the prompt will be associate with.
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* @param prefList a list of [Preference]s to toggle.
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*/
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fun setBiometricPrompt(view: View, prefList: List<Int>) {
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biometricPromptFeature.set(
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feature = BiometricPromptFeature(
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context = requireContext(),
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fragment = this,
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onAuthFailure = {
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togglePrefsEnabled(prefList, true)
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},
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onAuthSuccess = ::navigateOnSuccess
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),
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owner = this,
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view = view
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)
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}
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/**
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* Use [BiometricPromptFeature] or [KeyguardManager] to confirm device security.
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*
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* @param prefList a list of [Preference]s to disable while authentication is happening.
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*/
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fun verifyCredentialsOrShowSetupWarning(context: Context, prefList: List<Int>) {
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// Use the BiometricPrompt if available
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if (BiometricPromptFeature.canUseFeature(context)) {
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togglePrefsEnabled(prefList, false)
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biometricPromptFeature.get()?.requestAuthentication(unlockMessage())
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return
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}
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// Fallback to prompting for password with the KeyguardManager
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val manager = context.getSystemService<KeyguardManager>()
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if (manager?.isKeyguardSecure == true) {
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showPinVerification(manager)
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} else {
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// Warn that the device has not been secured
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if (context.settings().shouldShowSecurityPinWarning) {
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showPinDialogWarning(context)
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} else {
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navigateOnSuccess()
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}
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}
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}
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override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
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if (requestCode == PIN_REQUEST && resultCode == RESULT_OK) {
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navigateOnSuccess()
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}
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}
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companion object {
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const val PIN_REQUEST = 303
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}
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}
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