fix: User Verification dialog #2283

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/CheckDatabaseCredentialDialogFragment.kt

@@ -21,11 +21,13 @@ package com.kunzisoft.keepass.activities.dialogs
 
 import android.app.Dialog
 import android.os.Bundle
+import android.text.InputFilter
 import android.view.View
 import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.activityViewModels
 import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.database.element.MasterCredential
 import com.kunzisoft.keepass.utils.UriUtil.openUrl
 import com.kunzisoft.keepass.viewmodels.UserVerificationViewModel
 
@@ -39,12 +41,14 @@ class CheckDatabaseCredentialDialogFragment : DatabaseDialogFragment() {
             val builder = AlertDialog.Builder(activity)
             val inflater = activity.layoutInflater
             val rootView = inflater.inflate(R.layout.fragment_check_database_credential, null)
+            val editText = rootView.findViewById<TextView>(R.id.setup_check_password_edit_text)
+            editText.filters = arrayOf<InputFilter>(InputFilter.LengthFilter(
+                MasterCredential.CHECK_KEY_PASSWORD_LENGTH)
+            )
             builder.setView(rootView)
                     .setPositiveButton(R.string.check) { _, _ ->
                         userVerificationViewModel.checkMainCredential(
-                            rootView
-                                .findViewById<TextView>(R.id.setup_check_password_edit_text)
-                                .text.toString(),
+                            editText.text.toString()
                         )
                     }
                     .setNegativeButton(android.R.string.cancel) { _, _ ->

app/src/main/java/com/kunzisoft/keepass/credentialprovider/UserVerificationHelper.kt

@@ -103,6 +103,9 @@ class UserVerificationHelper {
             }
         }
 
+        /**
+         * Displays a dialog to verify the user
+         */
         fun FragmentActivity.checkUserVerification(
             userVerificationViewModel: UserVerificationViewModel,
             dataToVerify: UserVerificationData
@@ -114,6 +117,9 @@ class UserVerificationHelper {
             }
         }
 
+        /**
+         * Displays a dialog for entering the device credential to be checked
+         */
         fun FragmentActivity.showUserVerificationDeviceCredential(
             userVerificationViewModel: UserVerificationViewModel,
             dataToVerify: UserVerificationData
@@ -162,14 +168,22 @@ class UserVerificationHelper {
             )
         }
 
+        /**
+         * Displays a dialog for entering the database credential to be checked
+         */
         fun FragmentActivity.showUserVerificationDatabaseCredential(
             userVerificationViewModel: UserVerificationViewModel,
             dataToVerify: UserVerificationData
         ) {
             userVerificationViewModel.dataToVerify = dataToVerify
-            CheckDatabaseCredentialDialogFragment
-                .getInstance()
-                .show(this.supportFragmentManager, "checkDatabaseCredentialDialog")
+            val fragmentTag = "checkDatabaseCredentialDialog"
+            var fragment: CheckDatabaseCredentialDialogFragment? =
+                supportFragmentManager.findFragmentByTag(fragmentTag)
+                        as? CheckDatabaseCredentialDialogFragment?
+            if (fragment == null) {
+                fragment = CheckDatabaseCredentialDialogFragment.getInstance()
+                fragment.show(this.supportFragmentManager, fragmentTag)
+            }
         }
     }
 }

app/src/main/res/layout/fragment_check_database_credential.xml

@@ -79,7 +79,6 @@
                 android:layout_height="wrap_content"
                 android:focusable="true"
                 android:focusedByDefault="true"
-                android:maxLength="4"
                 android:inputType="textPassword"
                 android:importantForAccessibility="no"
                 android:importantForAutofill="no"

app/src/main/res/values/strings.xml

@@ -777,7 +777,7 @@
     <string name="error_passkey_credential_id">No passkey found with relying party %1$s and credentialIds %2$s</string>
     <string name="content_description_user_verification_information">User verification info</string>
     <string name="user_verification_required_title">User Verification</string>
-    <string name="user_verification_required_description">User verification is required to use and edit passkeys</string>
+    <string name="user_verification_required_description">Access to this data requires verification</string>
     <string name="user_verification_database_credential">Enter the first four characters of your database password</string>
     <string name="first_chars">First chars</string>
     <string name="check">Check</string>

database/src/main/java/com/kunzisoft/keepass/database/element/MasterCredential.kt

@@ -102,7 +102,7 @@ data class MasterCredential(
         fun getCheckKey(password: String?): ByteArray {
             return retrievePasswordKey(
                 try {
-                    password?.substring(0, 3) ?: ""
+                    password?.substring(0, CHECK_KEY_PASSWORD_LENGTH) ?: ""
                 } catch (_: Exception) { "" },
                 Charsets.UTF_8
             )
@@ -273,5 +273,7 @@ data class MasterCredential(
         private const val XML_NODE_KEY_NAME = "Key"
         private const val XML_NODE_DATA_NAME = "Data"
         private const val XML_ATTRIBUTE_DATA_HASH = "Hash"
+
+        const val CHECK_KEY_PASSWORD_LENGTH = 4
     }
 }