[fenix] For https://github.com/mozilla-mobile/fenix/issues/19693 - Display a biometric prompt when a credit card is selected to autofill (https://github.com/mozilla-mobile/fenix/pull/19697)

Co-authored-by: Arturo Mejia <arturomejiamarmol@gmail.com>

app/src/main/java/org/mozilla/fenix/browser/BaseBrowserFragment.kt

@@ -4,11 +4,14 @@
 
 package org.mozilla.fenix.browser
 
+import android.app.KeyguardManager
 import android.content.Context
+import android.content.DialogInterface
 import android.content.Intent
 import android.content.res.Configuration
 import android.os.Build
 import android.os.Bundle
+import android.provider.Settings
 import android.view.Gravity
 import android.view.LayoutInflater
 import android.view.View
@@ -16,7 +19,9 @@ import android.view.ViewGroup
 import android.view.accessibility.AccessibilityManager
 import androidx.annotation.CallSuper
 import androidx.annotation.VisibleForTesting
+import androidx.appcompat.app.AlertDialog
 import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.content.getSystemService
 import androidx.core.net.toUri
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
@@ -65,6 +70,7 @@ import mozilla.components.feature.intent.ext.EXTRA_SESSION_ID
 import mozilla.components.feature.media.fullscreen.MediaSessionFullscreenFeature
 import mozilla.components.feature.privatemode.feature.SecureWindowFeature
 import mozilla.components.feature.prompts.PromptFeature
+import mozilla.components.feature.prompts.PromptFeature.Companion.PIN_REQUEST
 import mozilla.components.feature.prompts.share.ShareDelegate
 import mozilla.components.feature.readerview.ReaderViewFeature
 import mozilla.components.feature.search.SearchFeature
@@ -132,6 +138,8 @@ import org.mozilla.fenix.ext.navigateBlockingForAsyncNavGraph
 import mozilla.components.support.ktx.android.view.enterToImmersiveMode
 import org.mozilla.fenix.GleanMetrics.PerfStartup
 import org.mozilla.fenix.ext.measureNoInline
+import org.mozilla.fenix.ext.secure
+import org.mozilla.fenix.settings.biometric.BiometricPromptFeature
 import mozilla.components.feature.session.behavior.ToolbarPosition as MozacToolbarPosition
 
 /**
@@ -180,6 +188,7 @@ abstract class BaseBrowserFragment : Fragment(), UserInteractionHandler, Activit
         ViewBoundFeatureWrapper<MediaSessionFullscreenFeature>()
     private val searchFeature = ViewBoundFeatureWrapper<SearchFeature>()
     private val webAuthnFeature = ViewBoundFeatureWrapper<WebAuthnFeature>()
+    private val biometricPromptFeature = ViewBoundFeatureWrapper<BiometricPromptFeature>()
     private var pipFeature: PictureInPictureFeature? = null
 
     var customTabSessionId: String? = null
@@ -533,6 +542,21 @@ abstract class BaseBrowserFragment : Fragment(), UserInteractionHandler, Activit
             view = view
         )
 
+        biometricPromptFeature.set(
+            feature = BiometricPromptFeature(
+                context = context,
+                fragment = this,
+                onAuthFailure = {
+                    promptsFeature.get()?.onBiometricResult(isAuthenticated = false)
+                },
+                onAuthSuccess = {
+                    promptsFeature.get()?.onBiometricResult(isAuthenticated = true)
+                }
+            ),
+            owner = this,
+            view = view
+        )
+
         promptsFeature.set(
             feature = PromptFeature(
                 activity = activity,
@@ -580,6 +604,9 @@ abstract class BaseBrowserFragment : Fragment(), UserInteractionHandler, Activit
                     val directions =
                         NavGraphDirections.actionGlobalCreditCardsSettingFragment()
                     findNavController().navigateBlockingForAsyncNavGraph(directions)
+                },
+                onSelectCreditCard = {
+                    showBiometricPrompt(context)
                 }
             ),
             owner = this,
@@ -731,6 +758,66 @@ abstract class BaseBrowserFragment : Fragment(), UserInteractionHandler, Activit
         initializeEngineView(toolbarHeight)
     }
 
+    /**
+     * Shows a biometric prompt and fallback to prompting for the password.
+     */
+    private fun showBiometricPrompt(context: Context) {
+        if (BiometricPromptFeature.canUseFeature(context)) {
+            biometricPromptFeature.get()
+                ?.requestAuthentication(getString(R.string.credit_cards_biometric_prompt_unlock_message))
+            return
+        }
+
+        // Fallback to prompting for password with the KeyguardManager
+        val manager = context.getSystemService<KeyguardManager>()
+        if (manager?.isKeyguardSecure == true) {
+            showPinVerification(manager)
+        } else {
+            // Warn that the device has not been secured
+            if (context.settings().shouldShowSecurityPinWarning) {
+                showPinDialogWarning(context)
+            } else {
+                promptsFeature.get()?.onBiometricResult(isAuthenticated = true)
+            }
+        }
+    }
+
+    /**
+     * Shows a pin request prompt. This is only used when BiometricPrompt is unavailable.
+     */
+    @Suppress("Deprecation")
+    private fun showPinVerification(manager: KeyguardManager) {
+        val intent = manager.createConfirmDeviceCredentialIntent(
+            getString(R.string.credit_cards_biometric_prompt_message_pin),
+            getString(R.string.credit_cards_biometric_prompt_unlock_message)
+        )
+        requireActivity().startActivityForResult(intent, PIN_REQUEST)
+    }
+
+    /**
+     * Shows a dialog warning about setting up a device lock PIN.
+     */
+    private fun showPinDialogWarning(context: Context) {
+        AlertDialog.Builder(context).apply {
+            setTitle(getString(R.string.credit_cards_warning_dialog_title))
+            setMessage(getString(R.string.credit_cards_warning_dialog_message))
+
+            setNegativeButton(getString(R.string.credit_cards_warning_dialog_later)) { _: DialogInterface, _ ->
+                promptsFeature.get()?.onBiometricResult(isAuthenticated = false)
+            }
+
+            setPositiveButton(getString(R.string.credit_cards_warning_dialog_set_up_now)) { it: DialogInterface, _ ->
+                it.dismiss()
+                promptsFeature.get()?.onBiometricResult(isAuthenticated = false)
+                startActivity(Intent(Settings.ACTION_SECURITY_SETTINGS))
+            }
+
+            create()
+        }.show().secure(activity)
+
+        context.settings().incrementSecureWarningCount()
+    }
+
     @VisibleForTesting
     internal fun expandToolbarOnNavigation(store: BrowserStore) {
         consumeFlow(store) { flow ->

buildSrc/src/main/java/AndroidComponents.kt

@@ -3,5 +3,5 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 object AndroidComponents {
-    const val VERSION = "90.0.20210528002854"
+    const val VERSION = "90.0.20210528204811"
 }