Merge branch 'release/2.10.1'

2.10.0

CHANGELOG

@@ -1,3 +1,37 @@
+KeePassDX(2.10.1)
+ * Fix parcelable with custom data #986
+
+KeePassDX(2.10.0)
+ * Manage new database format 4.1 #956
+ * Fix show button consistency #980
+ * Fix persistent notification #979
+
+KeePassDX(2.9.20)
+ * Fix search with non-latin chars #971
+ * Fix action mode with search #972 (rollback ignore accents #945)
+ * Fix timeout with 0s #974
+
+KeePassDX(2.9.19)
+ * Fix search slowdown #964
+ * Fix closing notification after lock request #965
+ * Better temp advanced unlocking code implementation #965
+ * Fix OTP token generation #967
+
+KeePassDX(2.9.18)
+ * Move groups #658
+ * Improve autofill recognition #960
+ * Remove diacritical marks in search string #945
+ * Fix search in references #962
+ * Fix themes in Libre version
+
+KeePassDX(2.9.17)
+ * Import / Export app properties #839
+ * Force twofish padding compatibility #955
+ * Better timeout preference #579
+
+KeePassDX(2.9.16)
+ * Fix small bugs #948
+
 KeePassDX(2.9.15)
  * Fix themes #935 #926
  * Decrease default clipboard time #934

app/build.gradle

@@ -11,8 +11,8 @@ android {
         applicationId "com.kunzisoft.keepass"
         minSdkVersion 15
         targetSdkVersion 30
-        versionCode = 68
-        versionName = "2.9.15"
+        versionCode = 78
+        versionName = "2.10.1"
         multiDexEnabled true
 
         testApplicationId = "com.kunzisoft.keepass.tests"
@@ -109,7 +109,7 @@ dependencies {
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
     implementation 'androidx.documentfile:documentfile:1.0.1'
-    implementation 'androidx.biometric:biometric:1.1.0-rc01'
+    implementation 'androidx.biometric:biometric:1.1.0'
     // Lifecycle - LiveData - ViewModel - Coroutines
     implementation "androidx.core:core-ktx:1.3.2"
     implementation 'androidx.fragment:fragment-ktx:1.2.5'

app/src/androidTest/java/com/kunzisoft/keepass/tests/utils/UUIDTest.kt

@@ -0,0 +1,15 @@
+package com.kunzisoft.keepass.tests.utils
+
+import com.kunzisoft.keepass.utils.UuidUtil
+import junit.framework.TestCase
+import java.util.*
+
+class UUIDTest: TestCase() {
+
+    fun testUUID() {
+        val randomUUID = UUID.randomUUID()
+        val hexStringUUID = UuidUtil.toHexString(randomUUID)
+        val retrievedUUID = UuidUtil.fromHexString(hexStringUUID)
+        assertEquals(randomUUID, retrievedUUID)
+    }
+}

app/src/main/java/com/kunzisoft/keepass/activities/EntryActivity.kt

@@ -39,6 +39,7 @@ import androidx.coordinatorlayout.widget.CoordinatorLayout
 import com.google.android.material.appbar.CollapsingToolbarLayout
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
+import com.kunzisoft.keepass.activities.helpers.ExternalFileHelper
 import com.kunzisoft.keepass.activities.helpers.SpecialMode
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.activities.lock.resetAppTimeoutWhenViewFocusedOrChanged
@@ -93,6 +94,8 @@ class EntryActivity : LockingActivity() {
     private var clipboardHelper: ClipboardHelper? = null
     private var mFirstLaunchOfActivity: Boolean = false
 
+    private var mExternalFileHelper: ExternalFileHelper? = null
+
     private var iconColor: Int = 0
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -140,6 +143,9 @@ class EntryActivity : LockingActivity() {
         clipboardHelper = ClipboardHelper(this)
         mFirstLaunchOfActivity = savedInstanceState?.getBoolean(KEY_FIRST_LAUNCH_ACTIVITY) ?: true
 
+        // Init SAF manager
+        mExternalFileHelper = ExternalFileHelper(this)
+
         // Init attachment service binder manager
         mAttachmentFileBinderManager = AttachmentFileBinderManager(this)
 
@@ -344,7 +350,7 @@ class EntryActivity : LockingActivity() {
 
         // Manage attachments
         entryContentsView?.assignAttachments(entryInfo.attachments.toSet(), StreamDirection.DOWNLOAD) { attachmentItem ->
-            createDocument(this, attachmentItem.name)?.let { requestCode ->
+            mExternalFileHelper?.createDocument(attachmentItem.name)?.let { requestCode ->
                 mAttachmentsToDownload[requestCode] = attachmentItem
             }
         }
@@ -380,7 +386,7 @@ class EntryActivity : LockingActivity() {
                 }
         }
 
-        onCreateDocumentResult(requestCode, resultCode, data) { createdFileUri ->
+        mExternalFileHelper?.onCreateDocumentResult(requestCode, resultCode, data) { createdFileUri ->
             if (createdFileUri != null) {
                 mAttachmentsToDownload[requestCode]?.let { attachmentToDownload ->
                     mAttachmentFileBinderManager

app/src/main/java/com/kunzisoft/keepass/activities/EntryEditActivity.kt

@@ -45,7 +45,7 @@ import com.kunzisoft.keepass.activities.dialogs.*
 import com.kunzisoft.keepass.activities.dialogs.FileTooBigDialogFragment.Companion.MAX_WARNING_BINARY_FILE
 import com.kunzisoft.keepass.activities.fragments.EntryEditFragment
 import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
-import com.kunzisoft.keepass.activities.helpers.SelectFileHelper
+import com.kunzisoft.keepass.activities.helpers.ExternalFileHelper
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.activities.lock.resetAppTimeoutWhenViewFocusedOrChanged
 import com.kunzisoft.keepass.autofill.AutofillComponent
@@ -103,7 +103,7 @@ class EntryEditActivity : LockingActivity(),
     private var lockView: View? = null
 
     // To manage attachments
-    private var mSelectFileHelper: SelectFileHelper? = null
+    private var mExternalFileHelper: ExternalFileHelper? = null
     private var mAttachmentFileBinderManager: AttachmentFileBinderManager? = null
     private var mAllowMultipleAttachments: Boolean = false
     private var mTempAttachments = ArrayList<EntryAttachmentState>()
@@ -241,7 +241,7 @@ class EntryEditActivity : LockingActivity(),
         }
 
         // To retrieve attachment
-        mSelectFileHelper = SelectFileHelper(this)
+        mExternalFileHelper = ExternalFileHelper(this)
         mAttachmentFileBinderManager = AttachmentFileBinderManager(this)
 
         // Save button
@@ -458,8 +458,8 @@ class EntryEditActivity : LockingActivity(),
     /**
      * Add a new attachment
      */
-    private fun addNewAttachment(item: MenuItem) {
-        mSelectFileHelper?.selectFileOnClickViewListener?.onMenuItemClick(item)
+    private fun addNewAttachment() {
+        mExternalFileHelper?.openDocument()
     }
 
     override fun onValidateUploadFileTooBig(attachmentToUploadUri: Uri?, fileName: String?) {
@@ -505,7 +505,7 @@ class EntryEditActivity : LockingActivity(),
             entryEditFragment?.icon = icon
         }
 
-        mSelectFileHelper?.onActivityResultCallback(requestCode, resultCode, data) { uri ->
+        mExternalFileHelper?.onOpenDocumentResult(requestCode, resultCode, data) { uri ->
             uri?.let { attachmentToUploadUri ->
                 UriUtil.getFileData(this, attachmentToUploadUri)?.also { documentFile ->
                     documentFile.name?.let { fileName ->
@@ -655,7 +655,7 @@ class EntryEditActivity : LockingActivity(),
                         && entryEditActivityEducation.checkAndPerformedAttachmentEducation(
                         attachmentView,
                         {
-                            mSelectFileHelper?.selectFileOnClickViewListener?.onClick(attachmentView)
+                            mExternalFileHelper?.openDocument()
                         },
                         {
                             performedNextEducation(entryEditActivityEducation)
@@ -683,7 +683,7 @@ class EntryEditActivity : LockingActivity(),
                 return true
             }
             R.id.menu_add_attachment -> {
-                addNewAttachment(item)
+                addNewAttachment()
                 return true
             }
             R.id.menu_add_otp -> {

app/src/main/java/com/kunzisoft/keepass/activities/FileDatabaseSelectActivity.kt

@@ -42,8 +42,9 @@ import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.AssignMasterKeyDialogFragment
 import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
-import com.kunzisoft.keepass.activities.helpers.SelectFileHelper
+import com.kunzisoft.keepass.activities.helpers.ExternalFileHelper
 import com.kunzisoft.keepass.activities.helpers.SpecialMode
+import com.kunzisoft.keepass.activities.helpers.setOpenDocumentClickListener
 import com.kunzisoft.keepass.activities.selection.SpecialModeActivity
 import com.kunzisoft.keepass.adapters.FileDatabaseHistoryAdapter
 import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
@@ -82,7 +83,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
 
     private var mDatabaseFileUri: Uri? = null
 
-    private var mSelectFileHelper: SelectFileHelper? = null
+    private var mExternalFileHelper: ExternalFileHelper? = null
 
     private var mProgressDatabaseTaskProvider: ProgressDatabaseTaskProvider? = null
 
@@ -103,14 +104,9 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
         createDatabaseButtonView?.setOnClickListener { createNewFile() }
 
         // Open database button
-        mSelectFileHelper = SelectFileHelper(this)
+        mExternalFileHelper = ExternalFileHelper(this)
         openDatabaseButtonView = findViewById(R.id.open_keyfile_button)
-        openDatabaseButtonView?.apply {
-            mSelectFileHelper?.selectFileOnClickViewListener?.let {
-                setOnClickListener(it)
-                setOnLongClickListener(it)
-            }
-        }
+        openDatabaseButtonView?.setOpenDocumentClickListener(mExternalFileHelper)
 
         // History list
         val fileDatabaseHistoryRecyclerView = findViewById<RecyclerView>(R.id.file_list)
@@ -171,8 +167,6 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
                         databaseFiles.databaseFileToActivate?.let { databaseFileToAdd ->
                             mAdapterDatabaseHistory?.addDatabaseFileHistory(databaseFileToAdd)
                         }
-                        GroupActivity.launch(this@FileDatabaseSelectActivity,
-                                PreferencesUtil.enableReadOnlyDatabase(this@FileDatabaseSelectActivity))
                     }
                     DatabaseFilesViewModel.DatabaseFileAction.UPDATE -> {
                         databaseFiles.databaseFileToActivate?.let { databaseFileToUpdate ->
@@ -185,10 +179,10 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
                         }
                     }
                 }
+                databaseFilesViewModel.consumeAction()
             } catch (e: Exception) {
                 Log.e(TAG, "Unable to observe database action", e)
             }
-            databaseFilesViewModel.consumeAction()
         }
 
         // Observe default database
@@ -206,6 +200,8 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
                             val mainCredential = result.data?.getParcelable(DatabaseTaskNotificationService.MAIN_CREDENTIAL_KEY) ?: MainCredential()
                             databaseFilesViewModel.addDatabaseFile(databaseUri, mainCredential.keyFileUri)
                         }
+                        GroupActivity.launch(this@FileDatabaseSelectActivity,
+                                PreferencesUtil.enableReadOnlyDatabase(this@FileDatabaseSelectActivity))
                     }
                     ACTION_DATABASE_LOAD_TASK -> {
                         val database = Database.getInstance()
@@ -234,7 +230,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
      * Create a new file by calling the content provider
      */
     private fun createNewFile() {
-        createDocument(this, getString(R.string.database_file_name_default) +
+        mExternalFileHelper?.createDocument( getString(R.string.database_file_name_default) +
                 getString(R.string.database_file_extension_default), "application/x-keepass")
     }
 
@@ -286,7 +282,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
         // Show open and create button or special mode
         when (mSpecialMode) {
             SpecialMode.DEFAULT -> {
-                if (allowCreateDocumentByStorageAccessFramework(packageManager)) {
+                if (ExternalFileHelper.allowCreateDocumentByStorageAccessFramework(packageManager)) {
                     // There is an activity which can handle this intent.
                     createDatabaseButtonView?.visibility = View.VISIBLE
                 } else{
@@ -359,14 +355,14 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
             AutofillHelper.onActivityResultSetResultAndFinish(this, requestCode, resultCode, data)
         }
 
-        mSelectFileHelper?.onActivityResultCallback(requestCode, resultCode, data) { uri ->
+        mExternalFileHelper?.onOpenDocumentResult(requestCode, resultCode, data) { uri ->
             if (uri != null) {
                 launchPasswordActivityWithPath(uri)
             }
         }
 
         // Retrieve the created URI from the file manager
-        onCreateDocumentResult(requestCode, resultCode, data) { databaseFileCreatedUri ->
+        mExternalFileHelper?.onCreateDocumentResult(requestCode, resultCode, data) { databaseFileCreatedUri ->
             mDatabaseFileUri = databaseFileCreatedUri
             if (mDatabaseFileUri != null) {
                 AssignMasterKeyDialogFragment.getInstance(true)
@@ -412,9 +408,9 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
             openDatabaseButtonView != null
                     && fileDatabaseSelectActivityEducation.checkAndPerformedSelectDatabaseEducation(
                     openDatabaseButtonView!!,
-                    {tapTargetView ->
+                    { tapTargetView ->
                         tapTargetView?.let {
-                            mSelectFileHelper?.selectFileOnClickViewListener?.onClick(it)
+                            mExternalFileHelper?.openDocument()
                         }
                     },
                     {}

app/src/main/java/com/kunzisoft/keepass/activities/GroupActivity.kt

@@ -382,6 +382,7 @@ class GroupActivity : LockingActivity(),
             Log.d(TAG, "setNewIntent: $intentNotNull")
             setIntent(intentNotNull)
             if (Intent.ACTION_SEARCH == intentNotNull.action) {
+                finishNodeAction()
                 // only one instance of search in backstack
                 deletePreviousSearchGroup()
                 openGroup(retrieveCurrentGroup(intentNotNull, null), true)
@@ -812,74 +813,75 @@ class GroupActivity : LockingActivity(),
 
     override fun onPasteMenuClick(pasteMode: ListNodesFragment.PasteMode?,
                                   nodes: List<Node>): Boolean {
-        // Move or copy only if allowed (in root if allowed)
-        if (mCurrentGroup != mDatabase?.rootGroup
-                || mDatabase?.rootCanContainsEntry() == true) {
-
-            when (pasteMode) {
-                ListNodesFragment.PasteMode.PASTE_FROM_COPY -> {
-                    // Copy
-                    mCurrentGroup?.let { newParent ->
-                        mProgressDatabaseTaskProvider?.startDatabaseCopyNodes(
-                                nodes,
-                                newParent,
-                                !mReadOnly && mAutoSaveEnable
-                        )
-                    }
-                }
-                ListNodesFragment.PasteMode.PASTE_FROM_MOVE -> {
-                    // Move
-                    mCurrentGroup?.let { newParent ->
-                        mProgressDatabaseTaskProvider?.startDatabaseMoveNodes(
-                                nodes,
-                                newParent,
-                                !mReadOnly && mAutoSaveEnable
-                        )
-                    }
-                }
-                else -> {
+        when (pasteMode) {
+            ListNodesFragment.PasteMode.PASTE_FROM_COPY -> {
+                // Copy
+                mCurrentGroup?.let { newParent ->
+                    mProgressDatabaseTaskProvider?.startDatabaseCopyNodes(
+                            nodes,
+                            newParent,
+                            !mReadOnly && mAutoSaveEnable
+                    )
                 }
             }
-        } else {
-            coordinatorLayout?.let { coordinatorLayout ->
-                Snackbar.make(coordinatorLayout,
-                        R.string.error_copy_entry_here,
-                        Snackbar.LENGTH_LONG).asError().show()
+            ListNodesFragment.PasteMode.PASTE_FROM_MOVE -> {
+                // Move
+                mCurrentGroup?.let { newParent ->
+                    mProgressDatabaseTaskProvider?.startDatabaseMoveNodes(
+                            nodes,
+                            newParent,
+                            !mReadOnly && mAutoSaveEnable
+                    )
+                }
             }
+            else -> {}
         }
         finishNodeAction()
         return true
     }
 
+    private fun eachNodeRecyclable(nodes: List<Node>): Boolean {
+        mDatabase?.let { database ->
+            return nodes.find { node ->
+                var cannotRecycle = true
+                if (node is Entry) {
+                    cannotRecycle = !database.canRecycle(node)
+                } else if (node is Group) {
+                    cannotRecycle = !database.canRecycle(node)
+                }
+                cannotRecycle
+            } == null
+        }
+        return false
+    }
+
     private fun deleteNodes(nodes: List<Node>, recycleBin: Boolean = false): Boolean {
-        val database = mDatabase
+        mDatabase?.let { database ->
 
-        // If recycle bin enabled, ensure it exists
-        if (database != null && database.isRecycleBinEnabled) {
-            database.ensureRecycleBinExists(resources)
-        }
-
-        // If recycle bin enabled and not in recycle bin, move in recycle bin
-        if (database != null
-                && database.isRecycleBinEnabled
-                && database.recycleBin != mCurrentGroup) {
-
-            mProgressDatabaseTaskProvider?.startDatabaseDeleteNodes(
-                    nodes,
-                    !mReadOnly && mAutoSaveEnable
-            )
-        }
-        // else open the dialog to confirm deletion
-        else {
-            val deleteNodesDialogFragment: DeleteNodesDialogFragment =
-            if (recycleBin) {
-                EmptyRecycleBinDialogFragment.getInstance(nodes)
-            } else {
-                DeleteNodesDialogFragment.getInstance(nodes)
+            // If recycle bin enabled, ensure it exists
+            if (database.isRecycleBinEnabled) {
+                database.ensureRecycleBinExists(resources)
             }
-            deleteNodesDialogFragment.show(supportFragmentManager, "deleteNodesDialogFragment")
+
+            // If recycle bin enabled and not in recycle bin, move in recycle bin
+            if (eachNodeRecyclable(nodes)) {
+                mProgressDatabaseTaskProvider?.startDatabaseDeleteNodes(
+                        nodes,
+                        !mReadOnly && mAutoSaveEnable
+                )
+            }
+            // else open the dialog to confirm deletion
+            else {
+                val deleteNodesDialogFragment: DeleteNodesDialogFragment =
+                        if (recycleBin) {
+                            EmptyRecycleBinDialogFragment.getInstance(nodes)
+                        } else {
+                            DeleteNodesDialogFragment.getInstance(nodes)
+                        }
+                deleteNodesDialogFragment.show(supportFragmentManager, "deleteNodesDialogFragment")
+            }
+            finishNodeAction()
         }
-        finishNodeAction()
         return true
     }
 
@@ -1076,6 +1078,16 @@ class GroupActivity : LockingActivity(),
         }
     }
 
+    override fun isValidGroupName(name: String): GroupEditDialogFragment.Error {
+        if (name.isEmpty()) {
+            return GroupEditDialogFragment.Error(true, R.string.error_no_name)
+        }
+        if (mDatabase?.groupNamesNotAllowed?.find { it.equals(name, ignoreCase = true) } != null) {
+            return GroupEditDialogFragment.Error(true, R.string.error_word_reserved)
+        }
+        return GroupEditDialogFragment.Error(false, null)
+    }
+
     override fun approveEditGroup(action: GroupEditDialogFragment.EditGroupDialogAction,
                                   groupInfo: GroupInfo) {
 

app/src/main/java/com/kunzisoft/keepass/activities/IconPickerActivity.kt

@@ -34,7 +34,8 @@ import androidx.fragment.app.commit
 import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.fragments.IconPickerFragment
-import com.kunzisoft.keepass.activities.helpers.SelectFileHelper
+import com.kunzisoft.keepass.activities.helpers.ExternalFileHelper
+import com.kunzisoft.keepass.activities.helpers.setOpenDocumentClickListener
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.activities.lock.resetAppTimeoutWhenViewFocusedOrChanged
 import com.kunzisoft.keepass.database.element.Database
@@ -66,7 +67,7 @@ class IconPickerActivity : LockingActivity() {
 
     private var mDatabase: Database? = null
 
-    private var mSelectFileHelper: SelectFileHelper? = null
+    private var mExternalFileHelper: ExternalFileHelper? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -84,15 +85,11 @@ class IconPickerActivity : LockingActivity() {
 
         coordinatorLayout = findViewById(R.id.icon_picker_coordinator)
 
+        mExternalFileHelper = ExternalFileHelper(this)
+
         uploadButton = findViewById(R.id.icon_picker_upload)
         if (mDatabase?.allowCustomIcons == true) {
-            uploadButton.setOnClickListener {
-                mSelectFileHelper?.selectFileOnClickViewListener?.onClick(it)
-            }
-            uploadButton.setOnLongClickListener {
-                mSelectFileHelper?.selectFileOnClickViewListener?.onLongClick(it)
-                true
-            }
+            uploadButton.setOpenDocumentClickListener(mExternalFileHelper)
         } else {
             uploadButton.visibility = View.GONE
         }
@@ -124,8 +121,6 @@ class IconPickerActivity : LockingActivity() {
         // Focus view to reinitialize timeout
         findViewById<ViewGroup>(R.id.icon_picker_container)?.resetAppTimeoutWhenViewFocusedOrChanged(this)
 
-        mSelectFileHelper = SelectFileHelper(this)
-
         iconPickerViewModel.standardIconPicked.observe(this) { iconStandard ->
             mIconImage.standard = iconStandard
             // Remove the custom icon if a standard one is selected
@@ -281,7 +276,7 @@ class IconPickerActivity : LockingActivity() {
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
 
-        mSelectFileHelper?.onActivityResultCallback(requestCode, resultCode, data) { uri ->
+        mExternalFileHelper?.onOpenDocumentResult(requestCode, resultCode, data) { uri ->
             addCustomIcon(uri)
         }
     }

app/src/main/java/com/kunzisoft/keepass/activities/PasswordActivity.kt

@@ -42,10 +42,7 @@ import androidx.fragment.app.commit
 import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.DuplicateUuidDialog
-import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
-import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
-import com.kunzisoft.keepass.activities.helpers.SelectFileHelper
-import com.kunzisoft.keepass.activities.helpers.SpecialMode
+import com.kunzisoft.keepass.activities.helpers.*
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.activities.selection.SpecialModeActivity
 import com.kunzisoft.keepass.app.database.CipherDatabaseEntity
@@ -95,7 +92,7 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
     private var mDatabaseKeyFileUri: Uri? = null
 
     private var mRememberKeyFile: Boolean = false
-    private var mSelectFileHelper: SelectFileHelper? = null
+    private var mExternalFileHelper: ExternalFileHelper? = null
 
     private var mPermissionAsked = false
     private var readOnly: Boolean = false
@@ -138,13 +135,8 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
         readOnly = ReadOnlyHelper.retrieveReadOnlyFromInstanceStateOrPreference(this, savedInstanceState)
         mRememberKeyFile = PreferencesUtil.rememberKeyFileLocations(this)
 
-        mSelectFileHelper = SelectFileHelper(this@PasswordActivity)
-        keyFileSelectionView?.apply {
-            mSelectFileHelper?.selectFileOnClickViewListener?.let {
-                setOnClickListener(it)
-                setOnLongClickListener(it)
-            }
-        }
+        mExternalFileHelper = ExternalFileHelper(this@PasswordActivity)
+        keyFileSelectionView?.setOpenDocumentClickListener(mExternalFileHelper)
 
         passwordView?.setOnEditorActionListener(onEditorActionListener)
         passwordView?.addTextChangedListener(object : TextWatcher {
@@ -702,8 +694,8 @@ open class PasswordActivity : SpecialModeActivity(), AdvancedUnlockFragment.Buil
         }
 
         var keyFileResult = false
-        mSelectFileHelper?.let {
-            keyFileResult = it.onActivityResultCallback(requestCode, resultCode, data
+        mExternalFileHelper?.let {
+            keyFileResult = it.onOpenDocumentResult(requestCode, resultCode, data
             ) { uri ->
                 if (uri != null) {
                     mDatabaseKeyFileUri = uri

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

@@ -30,13 +30,13 @@ import android.text.SpannableStringBuilder
 import android.text.TextWatcher
 import android.view.View
 import android.widget.CompoundButton
-import android.widget.ImageView
 import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.textfield.TextInputLayout
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.activities.helpers.SelectFileHelper
+import com.kunzisoft.keepass.activities.helpers.ExternalFileHelper
+import com.kunzisoft.keepass.activities.helpers.setOpenDocumentClickListener
 import com.kunzisoft.keepass.model.MainCredential
 import com.kunzisoft.keepass.utils.UriUtil
 import com.kunzisoft.keepass.view.KeyFileSelectionView
@@ -60,7 +60,7 @@ class AssignMasterKeyDialogFragment : DialogFragment() {
 
     private var mListener: AssignPasswordDialogListener? = null
 
-    private var mSelectFileHelper: SelectFileHelper? = null
+    private var mExternalFileHelper: ExternalFileHelper? = null
 
     private var mEmptyPasswordConfirmationDialog: AlertDialog? = null
     private var mNoKeyConfirmationDialog: AlertDialog? = null
@@ -133,11 +133,8 @@ class AssignMasterKeyDialogFragment : DialogFragment() {
             keyFileCheckBox = rootView?.findViewById(R.id.keyfile_checkox)
             keyFileSelectionView = rootView?.findViewById(R.id.keyfile_selection)
 
-            mSelectFileHelper = SelectFileHelper(this)
-            keyFileSelectionView?.apply {
-                setOnClickListener(mSelectFileHelper?.selectFileOnClickViewListener)
-                setOnLongClickListener(mSelectFileHelper?.selectFileOnClickViewListener)
-            }
+            mExternalFileHelper = ExternalFileHelper(this)
+            keyFileSelectionView?.setOpenDocumentClickListener(mExternalFileHelper)
 
             val dialog = builder.create()
 
@@ -289,7 +286,7 @@ class AssignMasterKeyDialogFragment : DialogFragment() {
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
 
-        mSelectFileHelper?.onActivityResultCallback(requestCode, resultCode, data) { uri ->
+        mExternalFileHelper?.onOpenDocumentResult(requestCode, resultCode, data) { uri ->
             uri?.let { pathUri ->
                 UriUtil.getFileData(requireContext(), uri)?.length()?.let { lengthFile ->
                     keyFileSelectionView?.error = null

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

@@ -219,14 +219,19 @@ class GroupEditDialogFragment : DialogFragment() {
     }
 
     private fun isValid(): Boolean {
-        if (nameTextView.text.toString().isEmpty()) {
-            nameTextLayoutView.error = getString(R.string.error_no_name)
-            return false
+        val error = mEditGroupListener?.isValidGroupName(nameTextView.text.toString()) ?: Error(false, null)
+        error.messageId?.let { messageId ->
+            nameTextLayoutView.error = getString(messageId)
+        } ?: kotlin.run {
+            nameTextLayoutView.error = null
         }
-        return true
+        return !error.isError
     }
 
+    data class Error(val isError: Boolean, val messageId: Int?)
+
     interface EditGroupListener {
+        fun isValidGroupName(name: String): Error
         fun approveEditGroup(action: EditGroupDialogAction,
                              groupInfo: GroupInfo)
         fun cancelEditGroup(action: EditGroupDialogAction,

app/src/main/java/com/kunzisoft/keepass/activities/fragments/ListNodesFragment.kt

@@ -311,13 +311,17 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
                         menu?.removeItem(R.id.menu_edit)
                     }
 
-                    // Copy and Move (not for groups)
+                    // Move
+                    if (readOnly
+                            || isASearchResult) {
+                        menu?.removeItem(R.id.menu_move)
+                    }
+
+                    // Copy (not allowed for group)
                     if (readOnly
                             || isASearchResult
                             || nodes.any { it.type == Type.GROUP }) {
-                        // TODO Copy For Group
                         menu?.removeItem(R.id.menu_copy)
-                        menu?.removeItem(R.id.menu_move)
                     }
 
                     // Deletion

app/src/main/java/com/kunzisoft/keepass/activities/helpers/ExternalFileHelper.kt

@@ -0,0 +1,254 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.activities.helpers
+
+import android.annotation.SuppressLint
+import android.app.Activity.RESULT_OK
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.os.Build
+import android.util.Log
+import android.view.View
+import androidx.annotation.RequiresApi
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentActivity
+import com.kunzisoft.keepass.activities.dialogs.FileManagerDialogFragment
+import com.kunzisoft.keepass.utils.UriUtil
+
+class ExternalFileHelper {
+
+    private var activity: FragmentActivity? = null
+    private var fragment: Fragment? = null
+
+    constructor(context: FragmentActivity) {
+        this.activity = context
+        this.fragment = null
+    }
+
+    constructor(context: Fragment) {
+        this.activity = context.activity
+        this.fragment = context
+    }
+
+    fun openDocument(getContent: Boolean = false,
+                     typeString: String = "*/*") {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            try {
+                if (getContent) {
+                    openActivityWithActionGetContent(typeString)
+                } else {
+                    openActivityWithActionOpenDocument(typeString)
+                }
+            } catch (e: Exception) {
+                Log.e(TAG, "Unable to open document", e)
+                showFileManagerDialogFragment()
+            }
+        } else {
+            showFileManagerDialogFragment()
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.KITKAT)
+    private fun openActivityWithActionOpenDocument(typeString: String) {
+        val intentOpenDocument = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = typeString
+            addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                addFlags(Intent.FLAG_GRANT_PREFIX_URI_PERMISSION)
+            }
+            addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+        }
+        if (fragment != null)
+            fragment?.startActivityForResult(intentOpenDocument, OPEN_DOC)
+        else
+            activity?.startActivityForResult(intentOpenDocument, OPEN_DOC)
+    }
+
+    @RequiresApi(Build.VERSION_CODES.KITKAT)
+    private fun openActivityWithActionGetContent(typeString: String) {
+        val intentGetContent = Intent(Intent.ACTION_GET_CONTENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = typeString
+            addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                addFlags(Intent.FLAG_GRANT_PREFIX_URI_PERMISSION)
+            }
+            addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+        }
+        if (fragment != null)
+            fragment?.startActivityForResult(intentGetContent, GET_CONTENT)
+        else
+            activity?.startActivityForResult(intentGetContent, GET_CONTENT)
+    }
+
+    /**
+     * To use in onActivityResultCallback in Fragment or Activity
+     * @param onFileSelected Callback retrieve from data
+     * @return true if requestCode was captured, false elsewhere
+     */
+    fun onOpenDocumentResult(requestCode: Int, resultCode: Int, data: Intent?,
+                             onFileSelected: ((uri: Uri?) -> Unit)?): Boolean {
+
+        when (requestCode) {
+            FILE_BROWSE -> {
+                if (resultCode == RESULT_OK) {
+                    val filename = data?.dataString
+                    var keyUri: Uri? = null
+                    if (filename != null) {
+                        keyUri = UriUtil.parse(filename)
+                    }
+                    onFileSelected?.invoke(keyUri)
+                }
+                return true
+            }
+            GET_CONTENT, OPEN_DOC -> {
+                if (resultCode == RESULT_OK) {
+                    if (data != null) {
+                        val uri = data.data
+                        if (uri != null) {
+                            try {
+                                // try to persist read and write permissions
+                                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+                                    activity?.contentResolver?.apply {
+                                        takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                                        takePersistableUriPermission(uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+                                    }
+                                }
+                            } catch (e: Exception) {
+                                // nop
+                            }
+                            onFileSelected?.invoke(uri)
+                        }
+                    }
+                }
+                return true
+            }
+        }
+        return false
+    }
+
+    /**
+     * Show Browser dialog to select file picker app
+     */
+    private fun showFileManagerDialogFragment() {
+        try {
+            if (fragment != null) {
+                fragment?.parentFragmentManager
+            } else {
+                activity?.supportFragmentManager
+            }?.let { fragmentManager ->
+                FileManagerDialogFragment().show(fragmentManager, "browserDialog")
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Can't open BrowserDialog", e)
+        }
+    }
+
+    fun createDocument(titleString: String,
+                       typeString: String = "application/octet-stream"): Int? {
+        val idCode = getUnusedCreateFileRequestCode()
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            try {
+                val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
+                    addCategory(Intent.CATEGORY_OPENABLE)
+                    type = typeString
+                    putExtra(Intent.EXTRA_TITLE, titleString)
+                }
+                if (fragment != null)
+                    fragment?.startActivityForResult(intent, idCode)
+                else
+                    activity?.startActivityForResult(intent, idCode)
+                return idCode
+            } catch (e: Exception) {
+                Log.e(TAG, "Unable to create document", e)
+                showFileManagerDialogFragment()
+            }
+        } else {
+            showFileManagerDialogFragment()
+        }
+        return null
+    }
+
+    /**
+     * To use in onActivityResultCallback in Fragment or Activity
+     * @param onFileCreated Callback retrieve from data
+     * @return true if requestCode was captured, false elsewhere
+     */
+    fun onCreateDocumentResult(requestCode: Int, resultCode: Int, data: Intent?,
+                               onFileCreated: (fileCreated: Uri?)->Unit) {
+        // Retrieve the created URI from the file manager
+        if (fileRequestCodes.contains(requestCode) && resultCode == RESULT_OK) {
+            onFileCreated.invoke(data?.data)
+            fileRequestCodes.remove(requestCode)
+        }
+    }
+
+    companion object {
+
+        private const val TAG = "OpenFileHelper"
+
+        private const val GET_CONTENT = 25745
+        private const val OPEN_DOC = 25845
+        private const val FILE_BROWSE = 25645
+
+        private var CREATE_FILE_REQUEST_CODE_DEFAULT = 3853
+        private var fileRequestCodes = ArrayList<Int>()
+
+        private fun getUnusedCreateFileRequestCode(): Int {
+            val newCreateFileRequestCode = CREATE_FILE_REQUEST_CODE_DEFAULT++
+            fileRequestCodes.add(newCreateFileRequestCode)
+            return newCreateFileRequestCode
+        }
+
+        @SuppressLint("InlinedApi")
+        fun allowCreateDocumentByStorageAccessFramework(packageManager: PackageManager,
+                                                        typeString: String = "application/octet-stream"): Boolean {
+            return when {
+                // To check if a custom file manager can manage the ACTION_CREATE_DOCUMENT
+                Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT -> {
+                    packageManager.queryIntentActivities(Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
+                        addCategory(Intent.CATEGORY_OPENABLE)
+                        type = typeString
+                    }, PackageManager.MATCH_DEFAULT_ONLY).isNotEmpty()
+                }
+                else -> true
+            }
+        }
+    }
+}
+
+fun View.setOpenDocumentClickListener(externalFileHelper: ExternalFileHelper?) {
+    externalFileHelper?.let { fileHelper ->
+        setOnClickListener {
+            fileHelper.openDocument()
+        }
+        setOnLongClickListener {
+            fileHelper.openDocument(true)
+            true
+        }
+    } ?: kotlin.run {
+        setOnClickListener(null)
+        setOnLongClickListener(null)
+    }
+}

app/src/main/java/com/kunzisoft/keepass/activities/helpers/SelectFileHelper.kt

@@ -1,244 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePassDX.
- *
- *  KeePassDX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePassDX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.activities.helpers
-
-import android.annotation.SuppressLint
-import android.app.Activity
-import android.app.Activity.RESULT_OK
-import android.content.Context
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.net.Uri
-import android.os.Build
-import android.util.Log
-import android.view.MenuItem
-import android.view.View
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentActivity
-import com.kunzisoft.keepass.activities.dialogs.FileManagerDialogFragment
-import com.kunzisoft.keepass.utils.UriUtil
-
-class SelectFileHelper {
-
-    private var activity: Activity? = null
-    private var fragment: Fragment? = null
-
-    val selectFileOnClickViewListener: SelectFileOnClickViewListener
-        get() = SelectFileOnClickViewListener()
-
-    constructor(context: Activity) {
-        this.activity = context
-        this.fragment = null
-    }
-
-    constructor(context: Fragment) {
-        this.activity = context.activity
-        this.fragment = context
-    }
-
-    inner class SelectFileOnClickViewListener :
-            View.OnClickListener,
-            View.OnLongClickListener,
-            MenuItem.OnMenuItemClickListener {
-
-        private fun onAbstractClick(longClick: Boolean = false) {
-            try {
-                if (longClick) {
-                    try {
-                        openActivityWithActionGetContent()
-                    } catch (e: Exception) {
-                        openActivityWithActionOpenDocument()
-                    }
-                } else {
-                    try {
-                        openActivityWithActionOpenDocument()
-                    } catch (e: Exception) {
-                        openActivityWithActionGetContent()
-                    }
-                }
-            } catch (e: Exception) {
-                Log.e(TAG, "Enable to start the file picker activity", e)
-                // Open browser dialog
-                if (lookForOpenIntentsFilePicker())
-                    showBrowserDialog()
-            }
-        }
-
-        override fun onClick(v: View) {
-            onAbstractClick()
-        }
-
-        override fun onLongClick(v: View?): Boolean {
-            onAbstractClick(true)
-            return true
-        }
-
-        override fun onMenuItemClick(item: MenuItem?): Boolean {
-            onAbstractClick()
-            return true
-        }
-    }
-
-    @SuppressLint("InlinedApi")
-    private fun openActivityWithActionOpenDocument() {
-        val intentOpenDocument = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
-            addCategory(Intent.CATEGORY_OPENABLE)
-            type = "*/*"
-            addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
-            addFlags(Intent.FLAG_GRANT_PREFIX_URI_PERMISSION)
-            addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-            addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
-        }
-        if (fragment != null)
-            fragment?.startActivityForResult(intentOpenDocument, OPEN_DOC)
-        else
-            activity?.startActivityForResult(intentOpenDocument, OPEN_DOC)
-    }
-
-    @SuppressLint("InlinedApi")
-    private fun openActivityWithActionGetContent() {
-        val intentGetContent = Intent(Intent.ACTION_GET_CONTENT).apply {
-            addCategory(Intent.CATEGORY_OPENABLE)
-            type = "*/*"
-            addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
-            addFlags(Intent.FLAG_GRANT_PREFIX_URI_PERMISSION)
-            addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-            addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
-        }
-        if (fragment != null)
-            fragment?.startActivityForResult(intentGetContent, GET_CONTENT)
-        else
-            activity?.startActivityForResult(intentGetContent, GET_CONTENT)
-    }
-
-    private fun lookForOpenIntentsFilePicker(): Boolean {
-        var showBrowser = false
-        try {
-            if (isIntentAvailable(activity!!, OPEN_INTENTS_FILE_BROWSE)) {
-                val intent = Intent(OPEN_INTENTS_FILE_BROWSE)
-                if (fragment != null)
-                    fragment?.startActivityForResult(intent, FILE_BROWSE)
-                else
-                    activity?.startActivityForResult(intent, FILE_BROWSE)
-            } else {
-                showBrowser = true
-            }
-        } catch (e: Exception) {
-            Log.w(TAG, "Enable to start OPEN_INTENTS_FILE_BROWSE", e)
-            showBrowser = true
-        }
-
-        return showBrowser
-    }
-
-    /**
-     * Indicates whether the specified action can be used as an intent. This
-     * method queries the package manager for installed packages that can
-     * respond to an intent with the specified action. If no suitable package is
-     * found, this method returns false.
-     *
-     * @param context The application's environment.
-     * @param action The Intent action to check for availability.
-     *
-     * @return True if an Intent with the specified action can be sent and
-     * responded to, false otherwise.
-     */
-    private fun isIntentAvailable(context: Context, action: String): Boolean {
-        val packageManager = context.packageManager
-        val intent = Intent(action)
-        val list = packageManager.queryIntentActivities(intent,
-                PackageManager.MATCH_DEFAULT_ONLY)
-        return list.size > 0
-    }
-
-    /**
-     * Show Browser dialog to select file picker app
-     */
-    private fun showBrowserDialog() {
-        try {
-            val fileManagerDialogFragment = FileManagerDialogFragment()
-            fragment?.let {
-                fileManagerDialogFragment.show(it.parentFragmentManager, "browserDialog")
-            } ?: fileManagerDialogFragment.show((activity as FragmentActivity).supportFragmentManager, "browserDialog")
-        } catch (e: Exception) {
-            Log.e(TAG, "Can't open BrowserDialog", e)
-        }
-    }
-
-    /**
-     * To use in onActivityResultCallback in Fragment or Activity
-     * @param keyFileCallback Callback retrieve from data
-     * @return true if requestCode was captured, false elsechere
-     */
-    fun onActivityResultCallback(
-            requestCode: Int,
-            resultCode: Int,
-            data: Intent?,
-            keyFileCallback: ((uri: Uri?) -> Unit)?): Boolean {
-
-        when (requestCode) {
-            FILE_BROWSE -> {
-                if (resultCode == RESULT_OK) {
-                    val filename = data?.dataString
-                    var keyUri: Uri? = null
-                    if (filename != null) {
-                        keyUri = UriUtil.parse(filename)
-                    }
-                    keyFileCallback?.invoke(keyUri)
-                }
-                return true
-            }
-            GET_CONTENT, OPEN_DOC -> {
-                if (resultCode == RESULT_OK) {
-                    if (data != null) {
-                        val uri = data.data
-                        if (uri != null) {
-                            try {
-                                // try to persist read and write permissions
-                                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
-                                    activity?.contentResolver?.apply {
-                                        takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                                        takePersistableUriPermission(uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
-                                    }
-                                }
-                            } catch (e: Exception) {
-                                // nop
-                            }
-                            keyFileCallback?.invoke(uri)
-                        }
-                    }
-                }
-                return true
-            }
-        }
-        return false
-    }
-
-    companion object {
-
-        private const val TAG = "OpenFileHelper"
-
-        const val OPEN_INTENTS_FILE_BROWSE = "org.openintents.action.PICK_FILE"
-
-        private const val GET_CONTENT = 25745
-        private const val OPEN_DOC = 25845
-        private const val FILE_BROWSE = 25645
-    }
-}

app/src/main/java/com/kunzisoft/keepass/activities/stylish/Stylish.kt

@@ -37,12 +37,12 @@ object Stylish {
      * Initialize the class with a theme preference
      * @param context Context to retrieve the theme preference
      */
-    fun init(context: Context) {
+    fun load(context: Context) {
         Log.d(Stylish::class.java.name, "Attatching to " + context.packageName)
         themeString = PreferencesUtil.getStyle(context)
     }
 
-    private fun retrieveEquivalentSystemStyle(context: Context, styleString: String): String {
+    fun retrieveEquivalentSystemStyle(context: Context, styleString: String): String {
         val systemNightMode = when (PreferencesUtil.getStyleBrightness(context)) {
             context.getString(R.string.list_style_brightness_light) -> false
             context.getString(R.string.list_style_brightness_night) -> true
@@ -84,12 +84,16 @@ object Stylish {
         }
     }
 
+    fun defaultStyle(context: Context): String {
+        return context.getString(R.string.list_style_name_light)
+    }
+
     /**
      * Assign the style to the class attribute
      * @param styleString Style id String
      */
     fun assignStyle(context: Context, styleString: String) {
-        themeString = retrieveEquivalentSystemStyle(context, styleString)
+        PreferencesUtil.setStyle(context, styleString)
     }
 
     /**

app/src/main/java/com/kunzisoft/keepass/adapters/IconPickerAdapter.kt

@@ -5,6 +5,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
+import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.database.element.icon.IconImageDraw
@@ -95,6 +96,12 @@ class IconPickerAdapter<I: IconImageDraw>(val context: Context, private val tint
     override fun onBindViewHolder(holder: CustomIconViewHolder, position: Int) {
         val icon = iconList[position]
         iconDrawableFactory?.assignDatabaseIcon(holder.iconImageView, icon, tintIcon)
+        icon.getIconImageToDraw().custom.name.let { iconName ->
+            holder.iconTextView.apply {
+                text = iconName
+                visibility = if (iconName.isNotEmpty()) View.VISIBLE else View.GONE
+            }
+        }
         holder.iconContainerView.isSelected = icon.selected
         holder.itemView.setOnClickListener {
             iconPickerListener?.onIconClickListener(icon)
@@ -117,5 +124,6 @@ class IconPickerAdapter<I: IconImageDraw>(val context: Context, private val tint
     inner class CustomIconViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
         var iconContainerView: ViewGroup = itemView.findViewById(R.id.icon_container)
         var iconImageView: ImageView = itemView.findViewById(R.id.icon_image)
+        var iconTextView: TextView = itemView.findViewById(R.id.icon_name)
     }
 }

app/src/main/java/com/kunzisoft/keepass/adapters/SearchEntryCursorAdapter.kt

@@ -106,7 +106,6 @@ class SearchEntryCursorAdapter(private val context: Context,
 
     private fun getEntryFrom(cursor: Cursor): Entry? {
         return database.createEntry()?.apply {
-            database.startManageEntry(this)
             entryKDB?.let { entryKDB ->
                 (cursor as EntryCursorKDB).populateEntry(entryKDB,
                         { standardIconId ->
@@ -127,7 +126,6 @@ class SearchEntryCursorAdapter(private val context: Context,
                         }
                 )
             }
-            database.stopManageEntry(this)
         }
     }
 
@@ -150,12 +148,14 @@ class SearchEntryCursorAdapter(private val context: Context,
         if (searchGroup != null) {
             // Search in hide entries but not meta-stream
             for (entry in searchGroup.getFilteredChildEntries(Group.ChildFilter.getDefaults(context))) {
+                database.startManageEntry(entry)
                 entry.entryKDB?.let {
                     cursorKDB?.addEntry(it)
                 }
                 entry.entryKDBX?.let {
                     cursorKDBX?.addEntry(it)
                 }
+                database.stopManageEntry(entry)
             }
         }
 

app/src/main/java/com/kunzisoft/keepass/app/App.kt

@@ -29,7 +29,7 @@ class App : MultiDexApplication() {
     override fun onCreate() {
         super.onCreate()
 
-        Stylish.init(this)
+        Stylish.load(this)
         PRNGFixes.apply()
     }
 

app/src/main/java/com/kunzisoft/keepass/app/database/CipherDatabaseAction.kt

@@ -19,10 +19,7 @@
  */
 package com.kunzisoft.keepass.app.database
 
-import android.content.ComponentName
-import android.content.Context
-import android.content.Intent
-import android.content.ServiceConnection
+import android.content.*
 import android.net.Uri
 import android.os.IBinder
 import android.util.Log
@@ -42,66 +39,95 @@ class CipherDatabaseAction(context: Context) {
     // Temp DAO to easily remove content if object no longer in memory
     private var useTempDao = PreferencesUtil.isTempAdvancedUnlockEnable(applicationContext)
 
-    private val mIntentAdvancedUnlockService = Intent(applicationContext,
-            AdvancedUnlockNotificationService::class.java)
     private var mBinder: AdvancedUnlockNotificationService.AdvancedUnlockBinder? = null
     private var mServiceConnection: ServiceConnection? = null
 
-    private var mDatabaseListeners = LinkedList<DatabaseListener>()
+    private var mDatabaseListeners = LinkedList<CipherDatabaseListener>()
+    private var mAdvancedUnlockBroadcastReceiver = AdvancedUnlockNotificationService.AdvancedUnlockReceiver {
+        deleteAll()
+        removeAllDataAndDetach()
+    }
 
     fun reloadPreferences() {
         useTempDao = PreferencesUtil.isTempAdvancedUnlockEnable(applicationContext)
     }
 
     @Synchronized
-    private fun attachService(performedAction: () -> Unit) {
-        // Check if a service is currently running else do nothing
-        if (mBinder != null) {
+    private fun serviceActionTask(startService: Boolean = false, performedAction: () -> Unit) {
+        // Check if a service is currently running else call action without info
+        if (startService && mServiceConnection == null) {
+            attachService(performedAction)
+        } else {
             performedAction.invoke()
-        } else if (mServiceConnection == null) {
-            mServiceConnection = object : ServiceConnection {
-                override fun onServiceConnected(name: ComponentName?, serviceBinder: IBinder?) {
-                    mBinder = (serviceBinder as AdvancedUnlockNotificationService.AdvancedUnlockBinder)
-                    performedAction.invoke()
-                }
-
-                override fun onServiceDisconnected(name: ComponentName?) {
-                    mBinder = null
-                    mServiceConnection = null
-                    mDatabaseListeners.forEach {
-                        it.onDatabaseCleared()
-                    }
-                }
-            }
-            applicationContext.bindService(mIntentAdvancedUnlockService,
-                    mServiceConnection!!,
-                    Context.BIND_ABOVE_CLIENT)
-            if (mBinder == null) {
-                try {
-                    applicationContext.startService(mIntentAdvancedUnlockService)
-                } catch (e: Exception) {
-                    Log.e(TAG, "Unable to start cipher action", e)
-                }
-            }
         }
     }
 
-    fun registerDatabaseListener(listener: DatabaseListener) {
-        mDatabaseListeners.add(listener)
+    @Synchronized
+    private fun attachService(performedAction: () -> Unit) {
+        applicationContext.registerReceiver(mAdvancedUnlockBroadcastReceiver, IntentFilter().apply {
+            addAction(AdvancedUnlockNotificationService.REMOVE_ADVANCED_UNLOCK_KEY_ACTION)
+        })
+
+        mServiceConnection = object : ServiceConnection {
+            override fun onServiceConnected(name: ComponentName?, serviceBinder: IBinder?) {
+                mBinder = (serviceBinder as AdvancedUnlockNotificationService.AdvancedUnlockBinder)
+                performedAction.invoke()
+            }
+
+            override fun onServiceDisconnected(name: ComponentName?) {
+                onClear()
+            }
+        }
+        try {
+            AdvancedUnlockNotificationService.bindService(applicationContext,
+                    mServiceConnection!!,
+                    Context.BIND_AUTO_CREATE)
+        } catch (e: Exception) {
+            Log.e(TAG, "Unable to start cipher action", e)
+            performedAction.invoke()
+        }
     }
 
-    fun unregisterDatabaseListener(listener: DatabaseListener) {
-        mDatabaseListeners.remove(listener)
+    @Synchronized
+    private fun detachService() {
+        try {
+            applicationContext.unregisterReceiver(mAdvancedUnlockBroadcastReceiver)
+        } catch (e: Exception) {}
+
+        mServiceConnection?.let {
+            AdvancedUnlockNotificationService.unbindService(applicationContext, it)
+        }
     }
 
-    interface DatabaseListener {
-        fun onDatabaseCleared()
+    private fun removeAllDataAndDetach() {
+        detachService()
+        onClear()
+    }
+
+    fun registerDatabaseListener(listenerCipher: CipherDatabaseListener) {
+        mDatabaseListeners.add(listenerCipher)
+    }
+
+    fun unregisterDatabaseListener(listenerCipher: CipherDatabaseListener) {
+        mDatabaseListeners.remove(listenerCipher)
+    }
+
+    private fun onClear() {
+        mBinder = null
+        mServiceConnection = null
+        mDatabaseListeners.forEach {
+            it.onCipherDatabaseCleared()
+        }
+    }
+
+    interface CipherDatabaseListener {
+        fun onCipherDatabaseCleared()
     }
 
     fun getCipherDatabase(databaseUri: Uri,
                           cipherDatabaseResultListener: (CipherDatabaseEntity?) -> Unit) {
         if (useTempDao) {
-            attachService {
+            serviceActionTask {
                 cipherDatabaseResultListener.invoke(mBinder?.getCipherDatabase(databaseUri))
             }
         } else {
@@ -126,7 +152,8 @@ class CipherDatabaseAction(context: Context) {
     fun addOrUpdateCipherDatabase(cipherDatabaseEntity: CipherDatabaseEntity,
                                   cipherDatabaseResultListener: (() -> Unit)? = null) {
         if (useTempDao) {
-            attachService {
+            // The only case to create service (not needed to get an info)
+            serviceActionTask(true) {
                 mBinder?.addOrUpdateCipherDatabase(cipherDatabaseEntity)
                 cipherDatabaseResultListener?.invoke()
             }
@@ -151,7 +178,7 @@ class CipherDatabaseAction(context: Context) {
     fun deleteByDatabaseUri(databaseUri: Uri,
                             cipherDatabaseResultListener: (() -> Unit)? = null) {
         if (useTempDao) {
-            attachService {
+            serviceActionTask {
                 mBinder?.deleteByDatabaseUri(databaseUri)
                 cipherDatabaseResultListener?.invoke()
             }
@@ -168,14 +195,19 @@ class CipherDatabaseAction(context: Context) {
     }
 
     fun deleteAll() {
-        attachService {
-            mBinder?.deleteAll()
+        if (useTempDao) {
+            serviceActionTask {
+                mBinder?.deleteAll()
+            }
         }
+        // To erase the residues
         IOActionTask(
                 {
                     cipherDatabaseDao.deleteAll()
                 }
         ).execute()
+        // Unbind
+        removeAllDataAndDetach()
     }
 
     companion object : SingletonHolderParameter<CipherDatabaseAction, Context>(::CipherDatabaseAction) {

app/src/main/java/com/kunzisoft/keepass/autofill/StructureParser.kt

@@ -223,9 +223,22 @@ class StructureParser(private val structure: AssistStructure) {
                         usernameValueCandidate = node.autofillValue
                         Log.d(TAG, "Autofill username candidate android text type: ${showHexInputType(inputType)}")
                     }
+                    inputIsVariationType(inputType,
+                            InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) -> {
+                        // Some forms used visible password as username
+                        if (usernameCandidate == null && usernameValueCandidate == null) {
+                            usernameCandidate = autofillId
+                            usernameValueCandidate = node.autofillValue
+                            Log.d(TAG, "Autofill visible password android text type (as username): ${showHexInputType(inputType)}")
+                        } else if (result?.passwordId == null && result?.passwordValue == null) {
+                            result?.passwordId = autofillId
+                            result?.passwordValue = node.autofillValue
+                            Log.d(TAG, "Autofill visible password android text type (as password): ${showHexInputType(inputType)}")
+                            usernameNeeded = false
+                        }
+                    }
                     inputIsVariationType(inputType,
                             InputType.TYPE_TEXT_VARIATION_PASSWORD,
-                            InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD,
                             InputType.TYPE_TEXT_VARIATION_WEB_PASSWORD) -> {
                         result?.passwordId = autofillId
                         result?.passwordValue = node.autofillValue

app/src/main/java/com/kunzisoft/keepass/biometric/AdvancedUnlockFragment.kt

@@ -36,7 +36,6 @@ import com.kunzisoft.keepass.activities.stylish.StylishFragment
 import com.kunzisoft.keepass.app.database.CipherDatabaseAction
 import com.kunzisoft.keepass.database.exception.IODatabaseException
 import com.kunzisoft.keepass.education.PasswordActivityEducation
-import com.kunzisoft.keepass.services.AdvancedUnlockNotificationService
 import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.view.AdvancedUnlockInfoView
 
@@ -68,7 +67,7 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
 
     private lateinit var cipherDatabaseAction : CipherDatabaseAction
 
-    private var cipherDatabaseListener: CipherDatabaseAction.DatabaseListener? = null
+    private var cipherDatabaseListener: CipherDatabaseAction.CipherDatabaseListener? = null
 
     // Only to fix multiple fingerprint menu #332
     private var mAllowAdvancedUnlockMenu = false
@@ -125,8 +124,10 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
 
     override fun onResume() {
         super.onResume()
-        mAdvancedUnlockEnabled = PreferencesUtil.isAdvancedUnlockEnable(requireContext())
-        mAutoOpenPromptEnabled = PreferencesUtil.isAdvancedUnlockPromptAutoOpenEnable(requireContext())
+        context?.let {
+            mAdvancedUnlockEnabled = PreferencesUtil.isAdvancedUnlockEnable(it)
+            mAutoOpenPromptEnabled = PreferencesUtil.isAdvancedUnlockPromptAutoOpenEnable(it)
+        }
         keepConnection = false
     }
 
@@ -176,34 +177,36 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
      * Check unlock availability and change the current mode depending of device's state
      */
     fun checkUnlockAvailability() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-            allowOpenBiometricPrompt = true
-            if (PreferencesUtil.isBiometricUnlockEnable(requireContext())) {
-                mAdvancedUnlockInfoView?.setIconResource(R.drawable.fingerprint)
+        context?.let { context ->
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                allowOpenBiometricPrompt = true
+                if (PreferencesUtil.isBiometricUnlockEnable(context)) {
+                    mAdvancedUnlockInfoView?.setIconResource(R.drawable.fingerprint)
 
-                // biometric not supported (by API level or hardware) so keep option hidden
-                // or manually disable
-                val biometricCanAuthenticate = AdvancedUnlockManager.canAuthenticate(requireContext())
-                if (!PreferencesUtil.isAdvancedUnlockEnable(requireContext())
-                        || biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE
-                        || biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE) {
-                    toggleMode(Mode.BIOMETRIC_UNAVAILABLE)
-                } else if (biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED) {
-                    toggleMode(Mode.BIOMETRIC_SECURITY_UPDATE_REQUIRED)
-                } else {
-                    // biometric is available but not configured, show icon but in disabled state with some information
-                    if (biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED) {
-                        toggleMode(Mode.DEVICE_CREDENTIAL_OR_BIOMETRIC_NOT_CONFIGURED)
+                    // biometric not supported (by API level or hardware) so keep option hidden
+                    // or manually disable
+                    val biometricCanAuthenticate = AdvancedUnlockManager.canAuthenticate(context)
+                    if (!PreferencesUtil.isAdvancedUnlockEnable(context)
+                            || biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE
+                            || biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE) {
+                        toggleMode(Mode.BIOMETRIC_UNAVAILABLE)
+                    } else if (biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED) {
+                        toggleMode(Mode.BIOMETRIC_SECURITY_UPDATE_REQUIRED)
                     } else {
-                        selectMode()
+                        // biometric is available but not configured, show icon but in disabled state with some information
+                        if (biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED) {
+                            toggleMode(Mode.DEVICE_CREDENTIAL_OR_BIOMETRIC_NOT_CONFIGURED)
+                        } else {
+                            selectMode()
+                        }
+                    }
+                } else if (PreferencesUtil.isDeviceCredentialUnlockEnable(context)) {
+                    mAdvancedUnlockInfoView?.setIconResource(R.drawable.bolt)
+                    if (AdvancedUnlockManager.isDeviceSecure(context)) {
+                        selectMode()
+                    } else {
+                        toggleMode(Mode.DEVICE_CREDENTIAL_OR_BIOMETRIC_NOT_CONFIGURED)
                     }
-                }
-            } else if (PreferencesUtil.isDeviceCredentialUnlockEnable(requireContext())) {
-                mAdvancedUnlockInfoView?.setIconResource(R.drawable.bolt)
-                if (AdvancedUnlockManager.isDeviceSecure(requireContext())) {
-                    selectMode()
-                } else {
-                    toggleMode(Mode.DEVICE_CREDENTIAL_OR_BIOMETRIC_NOT_CONFIGURED)
                 }
             }
         }
@@ -261,7 +264,7 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
     private fun openBiometricSetting() {
         mAdvancedUnlockInfoView?.setIconViewClickListener(false) {
             // ACTION_SECURITY_SETTINGS does not contain fingerprint enrollment on some devices...
-            requireContext().startActivity(Intent(Settings.ACTION_SETTINGS))
+            context?.startActivity(Intent(Settings.ACTION_SETTINGS))
         }
     }
 
@@ -296,9 +299,11 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
         setAdvancedUnlockedTitleView(R.string.no_credentials_stored)
         setAdvancedUnlockedMessageView("")
 
-        mAdvancedUnlockInfoView?.setIconViewClickListener(false) {
-            onAuthenticationError(BiometricPrompt.ERROR_UNABLE_TO_PROCESS,
-                    requireContext().getString(R.string.credential_before_click_advanced_unlock_button))
+        context?.let { context ->
+            mAdvancedUnlockInfoView?.setIconViewClickListener(false) {
+                onAuthenticationError(BiometricPrompt.ERROR_UNABLE_TO_PROCESS,
+                        context.getString(R.string.credential_before_click_advanced_unlock_button))
+            }
         }
     }
 
@@ -402,9 +407,10 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
     fun connect(databaseUri: Uri) {
         showViews(true)
         this.databaseFileUri = databaseUri
-        cipherDatabaseListener = object: CipherDatabaseAction.DatabaseListener {
-            override fun onDatabaseCleared() {
-                deleteEncryptedDatabaseKey()
+        cipherDatabaseListener = object: CipherDatabaseAction.CipherDatabaseListener {
+            override fun onCipherDatabaseCleared() {
+                advancedUnlockManager?.closeBiometricPrompt()
+                checkUnlockAvailability()
             }
         }
         cipherDatabaseAction.apply {
@@ -435,14 +441,12 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
 
     @RequiresApi(Build.VERSION_CODES.M)
     fun deleteEncryptedDatabaseKey() {
-        allowOpenBiometricPrompt = false
-        mAdvancedUnlockInfoView?.setIconViewClickListener(false, null)
         advancedUnlockManager?.closeBiometricPrompt()
         databaseFileUri?.let { databaseUri ->
             cipherDatabaseAction.deleteByDatabaseUri(databaseUri) {
                 checkUnlockAvailability()
             }
-        }
+        } ?: checkUnlockAvailability()
     }
 
     override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
@@ -479,7 +483,6 @@ class AdvancedUnlockFragment: StylishFragment(), AdvancedUnlockManager.AdvancedU
                     mBuilderListener?.retrieveCredentialForEncryption()?.let { credential ->
                         advancedUnlockManager?.encryptData(credential)
                     }
-                    AdvancedUnlockNotificationService.startServiceForTimeout(requireContext())
                 }
                 Mode.EXTRACT_CREDENTIAL -> {
                     // retrieve the encrypted value from preferences

app/src/main/java/com/kunzisoft/keepass/database/action/node/DeleteNodesRunnable.kt

@@ -31,41 +31,47 @@ class DeleteNodesRunnable(context: Context,
                           afterActionNodesFinish: AfterActionNodesFinish)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
 
-    private var mParent: Group? = null
+    private var mOldParent: Group? = null
     private var mCanRecycle: Boolean = false
 
     private var mNodesToDeleteBackup = ArrayList<Node>()
 
     override fun nodeAction() {
 
-        foreachNode@ for(currentNode in mNodesToDelete) {
-            mParent = currentNode.parent
-            mParent?.touch(modified = false, touchParents = true)
+        foreachNode@ for(nodeToDelete in mNodesToDelete) {
+            mOldParent = nodeToDelete.parent
+            mOldParent?.touch(modified = false, touchParents = true)
 
-            when (currentNode.type) {
+            when (nodeToDelete.type) {
                 Type.GROUP -> {
+                    val groupToDelete = nodeToDelete as Group
                     // Create a copy to keep the old ref and remove it visually
-                    mNodesToDeleteBackup.add(Group(currentNode as Group))
+                    mNodesToDeleteBackup.add(Group(groupToDelete))
                     // Remove Node from parent
-                    mCanRecycle = database.canRecycle(currentNode)
+                    mCanRecycle = database.canRecycle(groupToDelete)
                     if (mCanRecycle) {
-                        database.recycle(currentNode, context.resources)
+                        groupToDelete.touch(modified = false, touchParents = true)
+                        database.recycle(groupToDelete, context.resources)
+                        groupToDelete.setPreviousParentGroup(mOldParent)
                     } else {
-                        database.deleteGroup(currentNode)
+                        database.deleteGroup(groupToDelete)
                     }
                 }
                 Type.ENTRY -> {
+                    val entryToDelete = nodeToDelete as Entry
                     // Create a copy to keep the old ref and remove it visually
-                    mNodesToDeleteBackup.add(Entry(currentNode as Entry))
+                    mNodesToDeleteBackup.add(Entry(entryToDelete))
                     // Remove Node from parent
-                    mCanRecycle = database.canRecycle(currentNode)
+                    mCanRecycle = database.canRecycle(entryToDelete)
                     if (mCanRecycle) {
-                        database.recycle(currentNode, context.resources)
+                        entryToDelete.touch(modified = false, touchParents = true)
+                        database.recycle(entryToDelete, context.resources)
+                        entryToDelete.setPreviousParentGroup(mOldParent)
                     } else {
-                        database.deleteEntry(currentNode)
+                        database.deleteEntry(entryToDelete)
                     }
                     // Remove the oldest attachments
-                    currentNode.getAttachments(database.attachmentPool).forEach {
+                    entryToDelete.getAttachments(database.attachmentPool).forEach {
                         database.removeAttachmentIfNotUsed(it)
                     }
                 }
@@ -76,7 +82,7 @@ class DeleteNodesRunnable(context: Context,
     override fun nodeFinish(): ActionNodesValues {
         if (!result.isSuccess) {
             if (mCanRecycle) {
-                mParent?.let {
+                mOldParent?.let {
                     mNodesToDeleteBackup.forEach { backupNode ->
                         when (backupNode.type) {
                             Type.GROUP -> {

app/src/main/java/com/kunzisoft/keepass/database/action/node/MoveNodesRunnable.kt

@@ -24,7 +24,7 @@ import android.util.Log
 import com.kunzisoft.keepass.database.element.*
 import com.kunzisoft.keepass.database.element.node.Node
 import com.kunzisoft.keepass.database.element.node.Type
-import com.kunzisoft.keepass.database.exception.EntryDatabaseException
+import com.kunzisoft.keepass.database.exception.MoveEntryDatabaseException
 import com.kunzisoft.keepass.database.exception.MoveGroupDatabaseException
 
 class MoveNodesRunnable constructor(
@@ -47,11 +47,14 @@ class MoveNodesRunnable constructor(
             when (nodeToMove.type) {
                 Type.GROUP -> {
                     val groupToMove = nodeToMove as Group
-                    // Move group in new parent if not in the current group
-                    if (groupToMove != mNewParent
+                    // Move group if the parent change
+                    if (mOldParent != mNewParent
+                            // and if not in the current group
+                            && groupToMove != mNewParent
                             && !mNewParent.isContainedIn(groupToMove)) {
-                        nodeToMove.touch(modified = true, touchParents = true)
+                        groupToMove.touch(modified = true, touchParents = true)
                         database.moveGroupTo(groupToMove, mNewParent)
+                        groupToMove.setPreviousParentGroup(mOldParent)
                     } else {
                         // Only finish thread
                         setError(MoveGroupDatabaseException())
@@ -64,11 +67,12 @@ class MoveNodesRunnable constructor(
                     if (mOldParent != mNewParent
                             // and root can contains entry
                             && (mNewParent != database.rootGroup || database.rootCanContainsEntry())) {
-                        nodeToMove.touch(modified = true, touchParents = true)
+                        entryToMove.touch(modified = true, touchParents = true)
                         database.moveEntryTo(entryToMove, mNewParent)
+                        entryToMove.setPreviousParentGroup(mOldParent)
                     } else {
                         // Only finish thread
-                        setError(EntryDatabaseException())
+                        setError(MoveEntryDatabaseException())
                         break@foreachNode
                     }
                 }

app/src/main/java/com/kunzisoft/keepass/database/crypto/CipherEngine.kt

@@ -36,6 +36,9 @@ abstract class CipherEngine {
         return 16
     }
 
+    // Used only with padding workaround
+    var forcePaddingCompatibility = false
+
     @Throws(NoSuchAlgorithmException::class, NoSuchPaddingException::class, InvalidKeyException::class, InvalidAlgorithmParameterException::class)
     abstract fun getCipher(opmode: Int, key: ByteArray, IV: ByteArray): Cipher
 

app/src/main/java/com/kunzisoft/keepass/database/crypto/TwofishEngine.kt

@@ -30,7 +30,7 @@ class TwofishEngine : CipherEngine() {
 
     @Throws(NoSuchAlgorithmException::class, NoSuchPaddingException::class, InvalidKeyException::class, InvalidAlgorithmParameterException::class)
     override fun getCipher(opmode: Int, key: ByteArray, IV: ByteArray): Cipher {
-        return CipherFactory.getTwofish(opmode, key, IV)
+        return CipherFactory.getTwofish(opmode, key, IV, forcePaddingCompatibility)
     }
 
     override fun getEncryptionAlgorithm(): EncryptionAlgorithm {

app/src/main/java/com/kunzisoft/keepass/database/element/CustomData.kt

@@ -0,0 +1,66 @@
+package com.kunzisoft.keepass.database.element
+
+import android.os.Parcel
+import android.os.Parcelable
+import com.kunzisoft.keepass.utils.ParcelableUtil
+import java.util.*
+
+class CustomData : Parcelable {
+
+    private val mCustomDataItems = HashMap<String, CustomDataItem>()
+
+    constructor()
+
+    constructor(toCopy: CustomData) {
+        mCustomDataItems.clear()
+        mCustomDataItems.putAll(toCopy.mCustomDataItems)
+    }
+
+    constructor(parcel: Parcel) {
+        ParcelableUtil.readStringParcelableMap(parcel, CustomDataItem::class.java)
+    }
+
+    fun get(key: String): CustomDataItem? {
+        return mCustomDataItems[key]
+    }
+
+    fun put(customDataItem: CustomDataItem) {
+        mCustomDataItems[customDataItem.key] = customDataItem
+    }
+
+    fun containsItemWithValue(value: String): Boolean {
+        return mCustomDataItems.any { mapEntry -> mapEntry.value.value.equals(value, true) }
+    }
+
+    fun containsItemWithLastModificationTime(): Boolean {
+        return mCustomDataItems.any { mapEntry -> mapEntry.value.lastModificationTime != null }
+    }
+
+    fun isNotEmpty(): Boolean {
+        return mCustomDataItems.isNotEmpty()
+    }
+
+    fun doForEachItems(action: (CustomDataItem) -> Unit) {
+        for ((_, value) in mCustomDataItems) {
+            action.invoke(value)
+        }
+    }
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        ParcelableUtil.writeStringParcelableMap(parcel, flags, mCustomDataItems)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<CustomData> {
+        override fun createFromParcel(parcel: Parcel): CustomData {
+            return CustomData(parcel)
+        }
+
+        override fun newArray(size: Int): Array<CustomData?> {
+            return arrayOfNulls(size)
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/CustomDataItem.kt

@@ -0,0 +1,43 @@
+package com.kunzisoft.keepass.database.element
+
+import android.os.Parcel
+import android.os.Parcelable
+
+class CustomDataItem : Parcelable {
+
+    val key: String
+    var value: String
+    var lastModificationTime: DateInstant? = null
+
+    constructor(parcel: Parcel) {
+        key = parcel.readString() ?: ""
+        value = parcel.readString() ?: ""
+        lastModificationTime = parcel.readParcelable(DateInstant::class.java.classLoader)
+    }
+
+    constructor(key: String, value: String, lastModificationTime: DateInstant? = null) {
+        this.key = key
+        this.value = value
+        this.lastModificationTime = lastModificationTime
+    }
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeString(key)
+        parcel.writeString(value)
+        parcel.writeParcelable(lastModificationTime, flags)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<CustomDataItem> {
+        override fun createFromParcel(parcel: Parcel): CustomDataItem {
+            return CustomDataItem(parcel)
+        }
+
+        override fun newArray(size: Int): Array<CustomDataItem?> {
+            return arrayOfNulls(size)
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/Database.kt

@@ -23,7 +23,6 @@ import android.content.ContentResolver
 import android.content.res.Resources
 import android.net.Uri
 import android.util.Log
-import com.kunzisoft.keepass.utils.readBytes4ToUInt
 import com.kunzisoft.keepass.database.action.node.NodeHandler
 import com.kunzisoft.keepass.database.crypto.EncryptionAlgorithm
 import com.kunzisoft.keepass.database.crypto.kdf.KdfEngine
@@ -43,7 +42,7 @@ import com.kunzisoft.keepass.database.element.node.NodeIdUUID
 import com.kunzisoft.keepass.database.exception.*
 import com.kunzisoft.keepass.database.file.DatabaseHeaderKDB
 import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_4
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_40
 import com.kunzisoft.keepass.database.file.input.DatabaseInputKDB
 import com.kunzisoft.keepass.database.file.input.DatabaseInputKDBX
 import com.kunzisoft.keepass.database.file.output.DatabaseOutputKDB
@@ -55,6 +54,7 @@ import com.kunzisoft.keepass.model.MainCredential
 import com.kunzisoft.keepass.tasks.ProgressTaskUpdater
 import com.kunzisoft.keepass.utils.SingletonHolder
 import com.kunzisoft.keepass.utils.UriUtil
+import com.kunzisoft.keepass.utils.readBytes4ToUInt
 import java.io.*
 import java.util.*
 import kotlin.collections.ArrayList
@@ -105,10 +105,6 @@ class Database {
             return mDatabaseKDB?.binaryCache ?: mDatabaseKDBX?.binaryCache ?: BinaryCache()
         }
 
-    fun setCacheDirectory(cacheDirectory: File) {
-        binaryCache.cacheDirectory = cacheDirectory
-    }
-
     private val iconsManager: IconsManager
         get() {
             return mDatabaseKDB?.iconsManager ?: mDatabaseKDBX?.iconsManager ?: IconsManager(binaryCache)
@@ -226,7 +222,7 @@ class Database {
         // Default compression not necessary if stored in header
         mDatabaseKDBX?.let {
             return it.compressionAlgorithm == CompressionAlgorithm.GZip
-                    && it.kdbxVersion.isBefore(FILE_VERSION_32_4)
+                    && it.kdbxVersion.isBefore(FILE_VERSION_40)
         }
         return false
     }
@@ -363,15 +359,10 @@ class Database {
             return null
         }
 
-    fun ensureRecycleBinExists(resources: Resources) {
-        mDatabaseKDB?.ensureBackupExists()
-        mDatabaseKDBX?.ensureRecycleBinExists(resources)
-    }
-
-    fun removeRecycleBin() {
-        // Don't allow remove backup in KDB
-        mDatabaseKDBX?.removeRecycleBin()
-    }
+    val groupNamesNotAllowed: List<String>
+        get() {
+            return mDatabaseKDB?.groupNamesNotAllowed ?: ArrayList()
+        }
 
     private fun setDatabaseKDB(databaseKDB: DatabaseKDB) {
         this.mDatabaseKDB = databaseKDB
@@ -546,25 +537,27 @@ class Database {
                                      omitBackup: Boolean,
                                      max: Int = Integer.MAX_VALUE): Group? {
         return mSearchHelper?.createVirtualGroupWithSearchResult(this,
-                searchQuery, SearchParameters(), omitBackup, max)
+                SearchParameters().apply {
+                    this.searchQuery = searchQuery
+                }, omitBackup, max)
     }
 
     fun createVirtualGroupFromSearchInfo(searchInfoString: String,
                                          omitBackup: Boolean,
                                          max: Int = Integer.MAX_VALUE): Group? {
         return mSearchHelper?.createVirtualGroupWithSearchResult(this,
-                searchInfoString, SearchParameters().apply {
-            searchInTitles = true
-            searchInUserNames = false
-            searchInPasswords = false
-            searchInUrls = true
-            searchInNotes = true
-            searchInOTP = false
-            searchInOther = true
-            searchInUUIDs = false
-            searchInTags = false
-            ignoreCase = true
-        }, omitBackup, max)
+                SearchParameters().apply {
+                    searchQuery = searchInfoString
+                    searchInTitles = true
+                    searchInUserNames = false
+                    searchInPasswords = false
+                    searchInUrls = true
+                    searchInNotes = true
+                    searchInOTP = false
+                    searchInOther = true
+                    searchInUUIDs = false
+                    searchInTags = false
+                }, omitBackup, max)
     }
 
     val attachmentPool: AttachmentPool
@@ -794,11 +787,11 @@ class Database {
     }
 
     fun addGroupTo(group: Group, parent: Group) {
-        group.groupKDB?.let { entryKDB ->
-            mDatabaseKDB?.addGroupTo(entryKDB, parent.groupKDB)
+        group.groupKDB?.let { groupKDB ->
+            mDatabaseKDB?.addGroupTo(groupKDB, parent.groupKDB)
         }
-        group.groupKDBX?.let { entryKDBX ->
-            mDatabaseKDBX?.addGroupTo(entryKDBX, parent.groupKDBX)
+        group.groupKDBX?.let { groupKDBX ->
+            mDatabaseKDBX?.addGroupTo(groupKDBX, parent.groupKDBX)
         }
         group.afterAssignNewParent()
     }
@@ -813,11 +806,11 @@ class Database {
     }
 
     fun removeGroupFrom(group: Group, parent: Group) {
-        group.groupKDB?.let { entryKDB ->
-            mDatabaseKDB?.removeGroupFrom(entryKDB, parent.groupKDB)
+        group.groupKDB?.let { groupKDB ->
+            mDatabaseKDB?.removeGroupFrom(groupKDB, parent.groupKDB)
         }
-        group.groupKDBX?.let { entryKDBX ->
-            mDatabaseKDBX?.removeGroupFrom(entryKDBX, parent.groupKDBX)
+        group.groupKDBX?.let { groupKDBX ->
+            mDatabaseKDBX?.removeGroupFrom(groupKDBX, parent.groupKDBX)
         }
         group.afterAssignNewParent()
     }
@@ -892,6 +885,16 @@ class Database {
         }
     }
 
+    fun ensureRecycleBinExists(resources: Resources) {
+        mDatabaseKDB?.ensureBackupExists()
+        mDatabaseKDBX?.ensureRecycleBinExists(resources)
+    }
+
+    fun removeRecycleBin() {
+        // Don't allow remove backup in KDB
+        mDatabaseKDBX?.removeRecycleBin()
+    }
+
     fun canRecycle(entry: Entry): Boolean {
         var canRecycle: Boolean? = null
         entry.entryKDB?.let {

app/src/main/java/com/kunzisoft/keepass/database/element/DateInstant.kt

@@ -55,7 +55,7 @@ class DateInstant : Parcelable {
         jDate = Date()
     }
 
-    protected constructor(parcel: Parcel) {
+    constructor(parcel: Parcel) {
         jDate = parcel.readSerializable() as Date
     }
 

app/src/main/java/com/kunzisoft/keepass/database/element/DeletedObject.kt

@@ -19,30 +19,37 @@
  */
 package com.kunzisoft.keepass.database.element
 
+import android.os.Parcel
+import android.os.ParcelUuid
+import android.os.Parcelable
 import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
-import java.util.Date
-import java.util.UUID
+import java.util.*
 
-class DeletedObject {
+class DeletedObject : Parcelable {
 
     var uuid: UUID = DatabaseVersioned.UUID_ZERO
-    private var mDeletionTime: Date? = null
+    private var mDeletionTime: DateInstant? = null
 
-    fun getDeletionTime(): Date {
+    constructor()
+
+    constructor(uuid: UUID, deletionTime: DateInstant = DateInstant()) {
+        this.uuid = uuid
+        this.mDeletionTime = deletionTime
+    }
+
+    constructor(parcel: Parcel) {
+        uuid = parcel.readParcelable<ParcelUuid>(ParcelUuid::class.java.classLoader)?.uuid ?: DatabaseVersioned.UUID_ZERO
+        mDeletionTime = parcel.readParcelable(DateInstant::class.java.classLoader)
+    }
+
+    fun getDeletionTime(): DateInstant {
         if (mDeletionTime == null) {
-            mDeletionTime = Date(System.currentTimeMillis())
+            mDeletionTime = DateInstant(System.currentTimeMillis())
         }
         return mDeletionTime!!
     }
 
-    fun setDeletionTime(deletionTime: Date) {
-        this.mDeletionTime = deletionTime
-    }
-
-    constructor()
-
-    constructor(uuid: UUID, deletionTime: Date = Date()) {
-        this.uuid = uuid
+    fun setDeletionTime(deletionTime: DateInstant) {
         this.mDeletionTime = deletionTime
     }
 
@@ -59,4 +66,23 @@ class DeletedObject {
     override fun hashCode(): Int {
         return uuid.hashCode()
     }
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeParcelable(ParcelUuid(uuid), flags)
+        parcel.writeParcelable(mDeletionTime, flags)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<DeletedObject> {
+        override fun createFromParcel(parcel: Parcel): DeletedObject {
+            return DeletedObject(parcel)
+        }
+
+        override fun newArray(size: Int): Array<DeletedObject?> {
+            return arrayOfNulls(size)
+        }
+    }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/Entry.kt

@@ -23,6 +23,7 @@ import android.os.Parcel
 import android.os.Parcelable
 import com.kunzisoft.keepass.database.element.binary.AttachmentPool
 import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
+import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import com.kunzisoft.keepass.database.element.entry.EntryKDB
 import com.kunzisoft.keepass.database.element.entry.EntryKDBX
 import com.kunzisoft.keepass.database.element.entry.EntryVersionedInterface
@@ -114,6 +115,20 @@ class Entry : Node, EntryVersionedInterface<Group> {
             entryKDBX?.icon = value
         }
 
+    var tags: Tags
+        get() = entryKDBX?.tags ?: Tags()
+        set(value) {
+            entryKDBX?.tags = value
+        }
+
+    var previousParentGroup: UUID = DatabaseVersioned.UUID_ZERO
+        get() = entryKDBX?.previousParentGroup ?: DatabaseVersioned.UUID_ZERO
+        private set
+
+    fun setPreviousParentGroup(previousParent: Group?) {
+        entryKDBX?.previousParentGroup = previousParent?.groupKDBX?.id ?: DatabaseVersioned.UUID_ZERO
+    }
+
     override val type: Type
         get() = Type.ENTRY
 
@@ -373,10 +388,6 @@ class Entry : Node, EntryVersionedInterface<Group> {
         return entryKDBX?.getSize(attachmentPool) ?: 0L
     }
 
-    fun containsCustomData(): Boolean {
-        return entryKDBX?.containsCustomData() ?: false
-    }
-
     /*
       ------------
       Converter
@@ -466,16 +477,7 @@ class Entry : Node, EntryVersionedInterface<Group> {
         return result
     }
 
-
-    companion object CREATOR : Parcelable.Creator<Entry> {
-        override fun createFromParcel(parcel: Parcel): Entry {
-            return Entry(parcel)
-        }
-
-        override fun newArray(size: Int): Array<Entry?> {
-            return arrayOfNulls(size)
-        }
-
+    companion object {
         const val PMS_TAN_ENTRY = "<TAN>"
 
         /**
@@ -484,5 +486,16 @@ class Entry : Node, EntryVersionedInterface<Group> {
         fun newExtraFieldNameAllowed(field: Field): Boolean {
             return EntryKDBX.newCustomNameAllowed(field.name)
         }
+
+        @JvmField
+        val CREATOR: Parcelable.Creator<Entry> = object : Parcelable.Creator<Entry> {
+            override fun createFromParcel(parcel: Parcel): Entry {
+                return Entry(parcel)
+            }
+
+            override fun newArray(size: Int): Array<Entry?> {
+                return arrayOfNulls(size)
+            }
+        }
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/Group.kt

@@ -22,6 +22,7 @@ package com.kunzisoft.keepass.database.element
 import android.content.Context
 import android.os.Parcel
 import android.os.Parcelable
+import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import com.kunzisoft.keepass.database.element.group.GroupKDB
 import com.kunzisoft.keepass.database.element.group.GroupKDBX
 import com.kunzisoft.keepass.database.element.group.GroupVersionedInterface
@@ -134,6 +135,20 @@ class Group : Node, GroupVersionedInterface<Group, Entry> {
             groupKDBX?.icon = value
         }
 
+    var tags: Tags
+        get() = groupKDBX?.tags ?: Tags()
+        set(value) {
+            groupKDBX?.tags = value
+        }
+
+    var previousParentGroup: UUID = DatabaseVersioned.UUID_ZERO
+        get() = groupKDBX?.previousParentGroup ?: DatabaseVersioned.UUID_ZERO
+        private set
+
+    fun setPreviousParentGroup(previousParent: Group?) {
+        groupKDBX?.previousParentGroup = previousParent?.groupKDBX?.id ?: DatabaseVersioned.UUID_ZERO
+    }
+
     override val type: Type
         get() = Type.GROUP
 
@@ -368,14 +383,6 @@ class Group : Node, GroupVersionedInterface<Group, Entry> {
         groupKDB?.nodeId = id
     }
 
-    fun getLevel(): Int {
-        return groupKDB?.level ?: -1
-    }
-
-    fun setLevel(level: Int) {
-        groupKDB?.level = level
-    }
-
     /*
       ------------
       KDBX Methods
@@ -402,10 +409,6 @@ class Group : Node, GroupVersionedInterface<Group, Entry> {
         groupKDBX?.isExpanded = expanded
     }
 
-    fun containsCustomData(): Boolean {
-        return groupKDBX?.containsCustomData() ?: false
-    }
-
     /*
       ------------
       Converter

app/src/main/java/com/kunzisoft/keepass/database/element/Tags.kt

@@ -0,0 +1,45 @@
+package com.kunzisoft.keepass.database.element
+
+import android.os.Parcel
+import android.os.Parcelable
+
+class Tags: Parcelable {
+
+    private val mTags = ArrayList<String>()
+
+    constructor()
+
+    constructor(values: String): this() {
+        mTags.addAll(values.split(';'))
+    }
+
+    constructor(parcel: Parcel) : this() {
+        parcel.readStringList(mTags)
+    }
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeStringList(mTags)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    fun isEmpty(): Boolean {
+        return mTags.isEmpty()
+    }
+
+    override fun toString(): String {
+        return mTags.joinToString(";")
+    }
+
+    companion object CREATOR : Parcelable.Creator<Tags> {
+        override fun createFromParcel(parcel: Parcel): Tags {
+            return Tags(parcel)
+        }
+
+        override fun newArray(size: Int): Array<Tags?> {
+            return arrayOfNulls(size)
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/binary/BinaryCache.kt

@@ -11,7 +11,7 @@ class BinaryCache {
      */
     var loadedCipherKey: LoadedKey = LoadedKey.generateNewCipherKey()
 
-    lateinit var cacheDirectory: File
+    var cacheDirectory: File? = null
 
     private val voidBinary = KeyByteArray(UNKNOWN, ByteArray(0))
 
@@ -19,11 +19,12 @@ class BinaryCache {
                       smallSize: Boolean = false,
                       compression: Boolean = false,
                       protection: Boolean = false): BinaryData {
-        return if (smallSize) {
+        val cacheDir = cacheDirectory
+        return if (smallSize || cacheDir == null) {
             BinaryByte(binaryId, compression, protection)
         } else {
-            val fileInCache = File(cacheDirectory, binaryId)
-            return BinaryFile(fileInCache, compression, protection)
+            val fileInCache = File(cacheDir, binaryId)
+            BinaryFile(fileInCache, compression, protection)
         }
     }
 

app/src/main/java/com/kunzisoft/keepass/database/element/binary/CustomIconPool.kt

@@ -1,8 +1,27 @@
 package com.kunzisoft.keepass.database.element.binary
 
+import com.kunzisoft.keepass.database.element.DateInstant
+import com.kunzisoft.keepass.database.element.icon.IconImageCustom
 import java.util.*
 
-class CustomIconPool(binaryCache: BinaryCache) : BinaryPool<UUID>(binaryCache) {
+class CustomIconPool(private val binaryCache: BinaryCache) : BinaryPool<UUID>(binaryCache) {
+
+    private val customIcons = HashMap<UUID, IconImageCustom>()
+
+    fun put(key: UUID? = null,
+            name: String,
+            lastModificationTime: DateInstant?,
+            smallSize: Boolean,
+            result: (IconImageCustom, BinaryData?) -> Unit) {
+        val keyBinary = super.put(key) { uniqueBinaryId ->
+            // Create a byte array for better performance with small data
+            binaryCache.getBinaryData(uniqueBinaryId, smallSize)
+        }
+        val uuid = keyBinary.keys.first()
+        val customIcon = IconImageCustom(uuid, name, lastModificationTime)
+        customIcons[uuid] = customIcon
+        result.invoke(customIcon, keyBinary.binary)
+    }
 
     override fun findUnusedKey(): UUID {
         var newUUID = UUID.randomUUID()
@@ -11,4 +30,14 @@ class CustomIconPool(binaryCache: BinaryCache) : BinaryPool<UUID>(binaryCache) {
         }
         return newUUID
     }
+
+    fun any(predicate: (IconImageCustom)-> Boolean): Boolean {
+        return customIcons.any { predicate(it.value) }
+    }
+
+    fun doForEachCustomIcon(action: (customIcon: IconImageCustom, binary: BinaryData) -> Unit) {
+        doForEachBinary { key, binary ->
+            action.invoke(customIcons[key] ?: IconImageCustom(key), binary)
+        }
+    }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/database/DatabaseKDB.kt

@@ -38,8 +38,6 @@ import kotlin.collections.ArrayList
 
 class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
 
-    private var backupGroupId: Int = BACKUP_FOLDER_UNDEFINED_ID
-
     private var kdfListV3: MutableList<KdfEngine> = ArrayList()
 
     override val version: String
@@ -55,13 +53,14 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
         return getGroupById(NodeIdInt(groupId))
     }
 
-    // Retrieve backup group in index
     val backupGroup: GroupKDB?
         get() {
-            return if (backupGroupId == BACKUP_FOLDER_UNDEFINED_ID)
-                null
-            else
-                getGroupById(backupGroupId)
+            return retrieveBackup()
+        }
+
+    val groupNamesNotAllowed: List<String>
+        get() {
+            return listOf(BACKUP_FOLDER_TITLE)
         }
 
     override val kdfEngine: KdfEngine
@@ -80,12 +79,7 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
 
     val rootGroups: List<GroupKDB>
         get() {
-            val kids = ArrayList<GroupKDB>()
-            doForEachGroupInIndex { group ->
-                if (group.level == 0)
-                    kids.add(group)
-            }
-            return kids
+            return rootGroup?.getChildGroups() ?: ArrayList()
         }
 
     override val passwordEncoding: String
@@ -163,27 +157,16 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
         return this.iconsManager.getIcon(iconId)
     }
 
-    override fun containsCustomData(): Boolean {
-        return false
-    }
-
     override fun isInRecycleBin(group: GroupKDB): Boolean {
         var currentGroup: GroupKDB? = group
+        val currentBackupGroup = backupGroup ?: return false
 
-        // Init backup group variable
-        if (backupGroupId == BACKUP_FOLDER_UNDEFINED_ID)
-            findBackupGroupId()
-
-        if (backupGroup == null)
-            return false
-
-        if (currentGroup == backupGroup)
+        if (currentGroup == currentBackupGroup)
             return true
 
+        val backupGroupId = currentBackupGroup.id
         while (currentGroup != null) {
-            if (currentGroup.level == 0
-                    && currentGroup.title.equals(BACKUP_FOLDER_TITLE, ignoreCase = true)) {
-                backupGroupId = currentGroup.id
+            if (backupGroupId == currentGroup.id) {
                 return true
             }
             currentGroup = currentGroup.parent
@@ -191,12 +174,12 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
         return false
     }
 
-    private fun findBackupGroupId() {
-        rootGroups.forEach { currentGroup ->
-            if (currentGroup.level == 0
-                    && currentGroup.title.equals(BACKUP_FOLDER_TITLE, ignoreCase = true)) {
-                backupGroupId = currentGroup.id
-            }
+    /**
+     * Retrieve backup group with his name
+     */
+    private fun retrieveBackup(): GroupKDB? {
+        return rootGroup?.searchChildGroup {
+            it.title.equals(BACKUP_FOLDER_TITLE, ignoreCase = true)
         }
     }
 
@@ -205,8 +188,6 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
      * if it doesn't exist
      */
     fun ensureBackupExists() {
-        findBackupGroupId()
-
         if (backupGroup == null) {
             // Create recycle bin
             val recycleBinGroup = createGroup().apply {
@@ -214,7 +195,6 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
                 icon.standard = getStandardIcon(IconImageStandard.TRASH_ID)
             }
             addGroupTo(recycleBinGroup, rootGroup)
-            backupGroupId = recycleBinGroup.id
         }
     }
 
@@ -268,6 +248,5 @@ class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
         val TYPE = DatabaseKDB::class.java
 
         const val BACKUP_FOLDER_TITLE = "Backup"
-        private const val BACKUP_FOLDER_UNDEFINED_ID = -1
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/database/DatabaseKDBX.kt

@@ -23,8 +23,6 @@ import android.content.res.Resources
 import android.util.Base64
 import android.util.Log
 import com.kunzisoft.encrypt.HashManager
-import com.kunzisoft.keepass.utils.UnsignedInt
-import com.kunzisoft.keepass.utils.longTo8Bytes
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.database.action.node.NodeHandler
 import com.kunzisoft.keepass.database.crypto.AesEngine
@@ -34,11 +32,13 @@ import com.kunzisoft.keepass.database.crypto.VariantDictionary
 import com.kunzisoft.keepass.database.crypto.kdf.KdfEngine
 import com.kunzisoft.keepass.database.crypto.kdf.KdfFactory
 import com.kunzisoft.keepass.database.crypto.kdf.KdfParameters
+import com.kunzisoft.keepass.database.element.CustomData
 import com.kunzisoft.keepass.database.element.DateInstant
 import com.kunzisoft.keepass.database.element.DeletedObject
 import com.kunzisoft.keepass.database.element.binary.BinaryData
 import com.kunzisoft.keepass.database.element.database.DatabaseKDB.Companion.BACKUP_FOLDER_TITLE
 import com.kunzisoft.keepass.database.element.entry.EntryKDBX
+import com.kunzisoft.keepass.database.element.entry.FieldReferencesEngine
 import com.kunzisoft.keepass.database.element.group.GroupKDBX
 import com.kunzisoft.keepass.database.element.icon.IconImageCustom
 import com.kunzisoft.keepass.database.element.icon.IconImageStandard
@@ -46,10 +46,13 @@ import com.kunzisoft.keepass.database.element.node.NodeIdUUID
 import com.kunzisoft.keepass.database.element.node.NodeVersioned
 import com.kunzisoft.keepass.database.element.security.MemoryProtectionConfig
 import com.kunzisoft.keepass.database.exception.UnknownKDF
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_3
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_4
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_31
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_40
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_41
 import com.kunzisoft.keepass.utils.StringUtil.removeSpaceChars
 import com.kunzisoft.keepass.utils.StringUtil.toHexString
+import com.kunzisoft.keepass.utils.UnsignedInt
+import com.kunzisoft.keepass.utils.longTo8Bytes
 import org.apache.commons.codec.binary.Hex
 import org.w3c.dom.Node
 import java.io.IOException
@@ -75,6 +78,7 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
     private var kdfList: MutableList<KdfEngine> = ArrayList()
     private var numKeyEncRounds: Long = 0
     var publicCustomData = VariantDictionary()
+    private val mFieldReferenceEngine = FieldReferencesEngine(this)
 
     var kdbxVersion = UnsignedInt(0)
     var name = ""
@@ -100,7 +104,7 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
      */
     var isRecycleBinEnabled = true
     var recycleBinUUID: UUID = UUID_ZERO
-    var recycleBinChanged = Date()
+    var recycleBinChanged = DateInstant()
     var entryTemplatesGroup = UUID_ZERO
     var entryTemplatesGroupChanged = DateInstant()
     var historyMaxItems = DEFAULT_HISTORY_MAX_ITEMS
@@ -109,7 +113,7 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
     var lastTopVisibleGroupUUID = UUID_ZERO
     var memoryProtection = MemoryProtectionConfig()
     val deletedObjects = ArrayList<DeletedObject>()
-    val customData = HashMap<String, String>()
+    val customData = CustomData()
 
     var localizedAppName = "KeePassDX"
 
@@ -126,20 +130,20 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
      */
     constructor(databaseName: String, rootName: String) {
         name = databaseName
-        kdbxVersion = FILE_VERSION_32_3
+        kdbxVersion = FILE_VERSION_31
         val group = createGroup().apply {
             title = rootName
             icon.standard = getStandardIcon(IconImageStandard.FOLDER_ID)
         }
         rootGroup = group
-        addGroupIndex(group)
     }
 
     override val version: String
         get() {
             val kdbxStringVersion = when(kdbxVersion) {
-                FILE_VERSION_32_3 -> "3.1"
-                FILE_VERSION_32_4 -> "4.0"
+                FILE_VERSION_31 -> "3.1"
+                FILE_VERSION_40 -> "4.0"
+                FILE_VERSION_41 -> "4.1"
                 else -> "UNKNOWN"
             }
             return "KeePass 2 - KDBX$kdbxStringVersion"
@@ -187,7 +191,7 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
                     }
                     CompressionAlgorithm.GZip -> {
                         // Only in databaseV3.1, in databaseV4 the header is zipped during the save
-                        if (kdbxVersion.isBefore(FILE_VERSION_32_4)) {
+                        if (kdbxVersion.isBefore(FILE_VERSION_40)) {
                             compressAllBinaries()
                         }
                     }
@@ -195,7 +199,7 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
             }
             CompressionAlgorithm.GZip -> {
                 // In databaseV4 the header is zipped during the save, so not necessary here
-                if (kdbxVersion.isBefore(FILE_VERSION_32_4)) {
+                if (kdbxVersion.isBefore(FILE_VERSION_40)) {
                     when (newCompression) {
                         CompressionAlgorithm.None -> {
                             decompressAllBinaries()
@@ -313,9 +317,11 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
     }
 
     fun addCustomIcon(customIconId: UUID? = null,
+                      name: String,
+                      lastModificationTime: DateInstant?,
                       smallSize: Boolean,
                       result: (IconImageCustom, BinaryData?) -> Unit) {
-        iconsManager.addCustomIcon(customIconId, smallSize, result)
+        iconsManager.addCustomIcon(customIconId, name, lastModificationTime, smallSize, result)
     }
 
     fun isCustomIconBinaryDuplicate(binary: BinaryData): Boolean {
@@ -326,12 +332,20 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
         return this.iconsManager.getIcon(iconUuid)
     }
 
-    fun putCustomData(label: String, value: String) {
-        this.customData[label] = value
+    /**
+     * To perform a search in entry custom data
+     */
+    fun getEntryByCustomData(customDataValue: String): EntryKDBX? {
+        return entryIndexes.values.find { entry ->
+            entry.customData.containsItemWithValue(customDataValue)
+        }
     }
 
-    override fun containsCustomData(): Boolean {
-        return customData.isNotEmpty()
+    /**
+     * Retrieve the value of a field reference
+     */
+    fun getFieldReferenceValue(textReference: String, recursionLevel: Int): String {
+        return mFieldReferenceEngine.compile(textReference, recursionLevel)
     }
 
     @Throws(IOException::class)
@@ -594,14 +608,14 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
             }
             addGroupTo(recycleBinGroup, rootGroup)
             recycleBinUUID = recycleBinGroup.id
-            recycleBinChanged = recycleBinGroup.lastModificationTime.date
+            recycleBinChanged = recycleBinGroup.lastModificationTime
         }
     }
 
     fun removeRecycleBin() {
         if (recycleBin != null) {
             recycleBinUUID = UUID_ZERO
-            recycleBinChanged = DateInstant().date
+            recycleBinChanged = DateInstant()
         }
     }
 
@@ -615,6 +629,9 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
             return false
         if (recycleBin == null)
             return false
+        if (node is GroupKDBX
+                && recycleBin!!.isContainedIn(node))
+            return false
         if (!node.isContainedIn(recycleBin!!))
             return true
         return false
@@ -652,9 +669,20 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
         this.deletedObjects.add(deletedObject)
     }
 
+    override fun addEntryTo(newEntry: EntryKDBX, parent: GroupKDBX?) {
+        super.addEntryTo(newEntry, parent)
+        mFieldReferenceEngine.clear()
+    }
+
+    override fun updateEntry(entry: EntryKDBX) {
+        super.updateEntry(entry)
+        mFieldReferenceEngine.clear()
+    }
+
     override fun removeEntryFrom(entryToRemove: EntryKDBX, parent: GroupKDBX?) {
         super.removeEntryFrom(entryToRemove, parent)
         deletedObjects.add(DeletedObject(entryToRemove.id))
+        mFieldReferenceEngine.clear()
     }
 
     override fun undoDeleteEntryFrom(entry: EntryKDBX, origParent: GroupKDBX?) {
@@ -725,6 +753,7 @@ class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
     override fun clearCache() {
         try {
             super.clearCache()
+            mFieldReferenceEngine.clear()
             attachmentPool.clear()
         } catch (e: Exception) {
             Log.e(TAG, "Unable to clear cache", e)

app/src/main/java/com/kunzisoft/keepass/database/element/database/DatabaseVersioned.kt

@@ -35,7 +35,6 @@ import java.io.ByteArrayInputStream
 import java.io.IOException
 import java.io.InputStream
 import java.io.UnsupportedEncodingException
-import java.security.MessageDigest
 import java.util.*
 
 abstract class DatabaseVersioned<
@@ -68,7 +67,7 @@ abstract class DatabaseVersioned<
     var changeDuplicateId = false
 
     private var groupIndexes = LinkedHashMap<NodeId<GroupId>, Group>()
-    private var entryIndexes = LinkedHashMap<NodeId<EntryId>, Entry>()
+    protected var entryIndexes = LinkedHashMap<NodeId<EntryId>, Entry>()
 
     abstract val version: String
 
@@ -87,6 +86,12 @@ abstract class DatabaseVersioned<
     abstract val availableEncryptionAlgorithms: List<EncryptionAlgorithm>
 
     var rootGroup: Group? = null
+        set(value) {
+            field = value
+            value?.let {
+                addGroupIndex(it)
+            }
+        }
 
     @Throws(IOException::class)
     protected abstract fun getMasterKey(key: String?, keyInputStream: InputStream?): ByteArray
@@ -266,6 +271,26 @@ abstract class DatabaseVersioned<
         return this.entryIndexes[id]
     }
 
+    fun getEntryByTitle(title: String): Entry? {
+        return this.entryIndexes.values.find { entry -> entry.title.equals(title, true) }
+    }
+
+    fun getEntryByUsername(username: String): Entry? {
+        return this.entryIndexes.values.find { entry -> entry.username.equals(username, true) }
+    }
+
+    fun getEntryByURL(url: String): Entry? {
+        return this.entryIndexes.values.find { entry -> entry.url.equals(url, true) }
+    }
+
+    fun getEntryByPassword(password: String): Entry? {
+        return this.entryIndexes.values.find { entry -> entry.password.equals(password, true) }
+    }
+
+    fun getEntryByNotes(notes: String): Entry? {
+        return this.entryIndexes.values.find { entry -> entry.notes.equals(notes, true) }
+    }
+
     fun addEntryIndex(entry: Entry) {
         val entryId = entry.nodeId
         if (entryIndexes.containsKey(entryId)) {
@@ -312,8 +337,6 @@ abstract class DatabaseVersioned<
 
     abstract fun getStandardIcon(iconId: Int): IconImageStandard
 
-    abstract fun containsCustomData(): Boolean
-
     fun addGroupTo(newGroup: Group, parent: Group?) {
         // Add tree to parent tree
         parent?.addChildGroup(newGroup)
@@ -331,14 +354,14 @@ abstract class DatabaseVersioned<
         removeGroupIndex(groupToRemove)
     }
 
-    fun addEntryTo(newEntry: Entry, parent: Group?) {
+    open fun addEntryTo(newEntry: Entry, parent: Group?) {
         // Add entry to parent
         parent?.addChildEntry(newEntry)
         newEntry.parent = parent
         addEntryIndex(newEntry)
     }
 
-    fun updateEntry(entry: Entry) {
+    open fun updateEntry(entry: Entry) {
         updateEntryIndex(entry)
     }
 

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryKDB.kt

@@ -90,7 +90,8 @@ class EntryKDB : EntryVersioned<Int, UUID, GroupKDB, EntryKDB>, NodeKDBInterface
         url = parcel.readString() ?: url
         notes = parcel.readString() ?: notes
         binaryDescription = parcel.readString() ?: binaryDescription
-        binaryDataId = parcel.readInt()
+        val rawBinaryDataId = parcel.readInt()
+        binaryDataId = if (rawBinaryDataId == -1) null else rawBinaryDataId
     }
 
     override fun readParentParcelable(parcel: Parcel): GroupKDB? {
@@ -109,9 +110,7 @@ class EntryKDB : EntryVersioned<Int, UUID, GroupKDB, EntryKDB>, NodeKDBInterface
         dest.writeString(url)
         dest.writeString(notes)
         dest.writeString(binaryDescription)
-        binaryDataId?.let {
-            dest.writeInt(it)
-        }
+        dest.writeInt(binaryDataId ?: -1)
     }
 
     fun updateWith(source: EntryKDB) {

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryKDBX.kt

@@ -20,12 +20,15 @@
 package com.kunzisoft.keepass.database.element.entry
 
 import android.os.Parcel
+import android.os.ParcelUuid
 import android.os.Parcelable
-import com.kunzisoft.keepass.utils.UnsignedLong
 import com.kunzisoft.keepass.database.element.Attachment
+import com.kunzisoft.keepass.database.element.CustomData
 import com.kunzisoft.keepass.database.element.DateInstant
+import com.kunzisoft.keepass.database.element.Tags
 import com.kunzisoft.keepass.database.element.binary.AttachmentPool
 import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
+import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import com.kunzisoft.keepass.database.element.group.GroupKDBX
 import com.kunzisoft.keepass.database.element.node.NodeId
 import com.kunzisoft.keepass.database.element.node.NodeIdUUID
@@ -33,6 +36,7 @@ import com.kunzisoft.keepass.database.element.node.NodeKDBXInterface
 import com.kunzisoft.keepass.database.element.node.Type
 import com.kunzisoft.keepass.database.element.security.ProtectedString
 import com.kunzisoft.keepass.utils.ParcelableUtil
+import com.kunzisoft.keepass.utils.UnsignedLong
 import java.util.*
 import kotlin.collections.ArrayList
 import kotlin.collections.LinkedHashMap
@@ -45,16 +49,183 @@ class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
     @Transient
     private var mDecodeRef = false
 
-    var customData = LinkedHashMap<String, String>()
+    override var usageCount = UnsignedLong(0)
+    override var locationChanged = DateInstant()
+    override var customData = CustomData()
     var fields = LinkedHashMap<String, ProtectedString>()
     var binaries = LinkedHashMap<String, Int>() // Map<Label, PoolId>
     var foregroundColor = ""
     var backgroundColor = ""
     var overrideURL = ""
+    override var tags = Tags()
+    override var previousParentGroup: UUID = DatabaseVersioned.UUID_ZERO
+    var qualityCheck = true
     var autoType = AutoType()
     var history = ArrayList<EntryKDBX>()
     var additional = ""
-    var tags = ""
+
+    override var expires: Boolean = false
+
+    constructor() : super()
+
+    constructor(parcel: Parcel) : super(parcel) {
+        usageCount = UnsignedLong(parcel.readLong())
+        locationChanged = parcel.readParcelable(DateInstant::class.java.classLoader) ?: locationChanged
+        customData = parcel.readParcelable(CustomData::class.java.classLoader) ?: CustomData()
+        fields = ParcelableUtil.readStringParcelableMap(parcel, ProtectedString::class.java)
+        binaries = ParcelableUtil.readStringIntMap(parcel)
+        foregroundColor = parcel.readString() ?: foregroundColor
+        backgroundColor = parcel.readString() ?: backgroundColor
+        overrideURL = parcel.readString() ?: overrideURL
+        tags = parcel.readParcelable(Tags::class.java.classLoader) ?: tags
+        previousParentGroup = parcel.readParcelable<ParcelUuid>(ParcelUuid::class.java.classLoader)?.uuid ?: DatabaseVersioned.UUID_ZERO
+        autoType = parcel.readParcelable(AutoType::class.java.classLoader) ?: autoType
+        parcel.readTypedList(history, CREATOR)
+        url = parcel.readString() ?: url
+        additional = parcel.readString() ?: additional
+    }
+
+    override fun readParentParcelable(parcel: Parcel): GroupKDBX? {
+        return parcel.readParcelable(GroupKDBX::class.java.classLoader)
+    }
+
+    override fun writeParentParcelable(parent: GroupKDBX?, parcel: Parcel, flags: Int) {
+        parcel.writeParcelable(parent, flags)
+    }
+
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        super.writeToParcel(dest, flags)
+        dest.writeLong(usageCount.toKotlinLong())
+        dest.writeParcelable(locationChanged, flags)
+        dest.writeParcelable(customData, flags)
+        ParcelableUtil.writeStringParcelableMap(dest, flags, fields)
+        ParcelableUtil.writeStringIntMap(dest, binaries)
+        dest.writeString(foregroundColor)
+        dest.writeString(backgroundColor)
+        dest.writeString(overrideURL)
+        dest.writeParcelable(tags, flags)
+        dest.writeParcelable(ParcelUuid(previousParentGroup), flags)
+        dest.writeParcelable(autoType, flags)
+        dest.writeTypedList(history)
+        dest.writeString(url)
+        dest.writeString(additional)
+    }
+
+    /**
+     * Update with deep copy of each entry element
+     * @param source
+     */
+    fun updateWith(source: EntryKDBX, copyHistory: Boolean = true) {
+        super.updateWith(source)
+        usageCount = source.usageCount
+        locationChanged = DateInstant(source.locationChanged)
+        customData = CustomData(source.customData)
+        fields.clear()
+        fields.putAll(source.fields)
+        binaries.clear()
+        binaries.putAll(source.binaries)
+        foregroundColor = source.foregroundColor
+        backgroundColor = source.backgroundColor
+        overrideURL = source.overrideURL
+        tags = source.tags
+        previousParentGroup = source.previousParentGroup
+        autoType = AutoType(source.autoType)
+        history.clear()
+        if (copyHistory)
+            history.addAll(source.history)
+        url = source.url
+        additional = source.additional
+    }
+
+    fun startToManageFieldReferences(database: DatabaseKDBX) {
+        this.mDatabase = database
+        this.mDecodeRef = true
+    }
+
+    fun stopToManageFieldReferences() {
+        this.mDatabase = null
+        this.mDecodeRef = false
+    }
+
+    override fun initNodeId(): NodeId<UUID> {
+        return NodeIdUUID()
+    }
+
+    override fun copyNodeId(nodeId: NodeId<UUID>): NodeId<UUID> {
+        return NodeIdUUID(nodeId.id)
+    }
+
+    override val type: Type
+        get() = Type.ENTRY
+
+    /**
+     * Decode a reference key with the FieldReferencesEngine
+     * @param decodeRef
+     * @param key
+     * @return
+     */
+    private fun decodeRefKey(decodeRef: Boolean, key: String, recursionLevel: Int): String {
+        return fields[key]?.toString()?.let { text ->
+            return if (decodeRef) {
+                mDatabase?.getFieldReferenceValue(text, recursionLevel) ?: text
+            } else text
+        } ?: ""
+    }
+
+    fun decodeTitleKey(recursionLevel: Int): String {
+        return decodeRefKey(mDecodeRef, STR_TITLE, recursionLevel)
+    }
+
+    override var title: String
+        get() = decodeTitleKey(0)
+        set(value) {
+            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectTitle
+            fields[STR_TITLE] = ProtectedString(protect, value)
+        }
+
+    fun decodeUsernameKey(recursionLevel: Int): String {
+        return decodeRefKey(mDecodeRef, STR_USERNAME, recursionLevel)
+    }
+
+    override var username: String
+        get() = decodeUsernameKey(0)
+        set(value) {
+            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectUserName
+            fields[STR_USERNAME] = ProtectedString(protect, value)
+        }
+
+    fun decodePasswordKey(recursionLevel: Int): String {
+        return decodeRefKey(mDecodeRef, STR_PASSWORD, recursionLevel)
+    }
+
+    override var password: String
+        get() = decodePasswordKey(0)
+        set(value) {
+            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectPassword
+            fields[STR_PASSWORD] = ProtectedString(protect, value)
+        }
+
+    fun decodeUrlKey(recursionLevel: Int): String {
+        return decodeRefKey(mDecodeRef, STR_URL, recursionLevel)
+    }
+
+    override var url
+        get() = decodeUrlKey(0)
+        set(value) {
+            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectUrl
+            fields[STR_URL] = ProtectedString(protect, value)
+        }
+
+    fun decodeNotesKey(recursionLevel: Int): String {
+        return decodeRefKey(mDecodeRef, STR_NOTES, recursionLevel)
+    }
+
+    override var notes: String
+        get() = decodeNotesKey(0)
+        set(value) {
+            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectNotes
+            fields[STR_NOTES] = ProtectedString(protect, value)
+        }
 
     fun getSize(attachmentPool: AttachmentPool): Long {
         var size = FIXED_LENGTH_SIZE
@@ -77,157 +248,11 @@ class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
         }
 
         size += overrideURL.length.toLong()
-        size += tags.length.toLong()
+        size += tags.toString().length
 
         return size
     }
 
-    override var expires: Boolean = false
-
-    constructor() : super()
-
-    constructor(parcel: Parcel) : super(parcel) {
-        usageCount = UnsignedLong(parcel.readLong())
-        locationChanged = parcel.readParcelable(DateInstant::class.java.classLoader) ?: locationChanged
-        customData = ParcelableUtil.readStringParcelableMap(parcel)
-        fields = ParcelableUtil.readStringParcelableMap(parcel, ProtectedString::class.java)
-        binaries = ParcelableUtil.readStringIntMap(parcel)
-        foregroundColor = parcel.readString() ?: foregroundColor
-        backgroundColor = parcel.readString() ?: backgroundColor
-        overrideURL = parcel.readString() ?: overrideURL
-        autoType = parcel.readParcelable(AutoType::class.java.classLoader) ?: autoType
-        parcel.readTypedList(history, CREATOR)
-        url = parcel.readString() ?: url
-        additional = parcel.readString() ?: additional
-        tags = parcel.readString() ?: tags
-    }
-
-    override fun writeToParcel(dest: Parcel, flags: Int) {
-        super.writeToParcel(dest, flags)
-        dest.writeLong(usageCount.toKotlinLong())
-        dest.writeParcelable(locationChanged, flags)
-        ParcelableUtil.writeStringParcelableMap(dest, customData)
-        ParcelableUtil.writeStringParcelableMap(dest, flags, fields)
-        ParcelableUtil.writeStringIntMap(dest, binaries)
-        dest.writeString(foregroundColor)
-        dest.writeString(backgroundColor)
-        dest.writeString(overrideURL)
-        dest.writeParcelable(autoType, flags)
-        dest.writeTypedList(history)
-        dest.writeString(url)
-        dest.writeString(additional)
-        dest.writeString(tags)
-    }
-
-    /**
-     * Update with deep copy of each entry element
-     * @param source
-     */
-    fun updateWith(source: EntryKDBX, copyHistory: Boolean = true) {
-        super.updateWith(source)
-        usageCount = source.usageCount
-        locationChanged = DateInstant(source.locationChanged)
-        // Add all custom elements in map
-        customData.clear()
-        customData.putAll(source.customData)
-        fields.clear()
-        fields.putAll(source.fields)
-        binaries.clear()
-        binaries.putAll(source.binaries)
-        foregroundColor = source.foregroundColor
-        backgroundColor = source.backgroundColor
-        overrideURL = source.overrideURL
-        autoType = AutoType(source.autoType)
-        history.clear()
-        if (copyHistory)
-            history.addAll(source.history)
-        url = source.url
-        additional = source.additional
-        tags = source.tags
-    }
-
-    fun startToManageFieldReferences(database: DatabaseKDBX) {
-        this.mDatabase = database
-        this.mDecodeRef = true
-    }
-
-    fun stopToManageFieldReferences() {
-        this.mDatabase = null
-        this.mDecodeRef = false
-    }
-
-    override fun initNodeId(): NodeId<UUID> {
-        return NodeIdUUID()
-    }
-
-    override fun copyNodeId(nodeId: NodeId<UUID>): NodeId<UUID> {
-        return NodeIdUUID(nodeId.id)
-    }
-
-    override fun readParentParcelable(parcel: Parcel): GroupKDBX? {
-        return parcel.readParcelable(GroupKDBX::class.java.classLoader)
-    }
-
-    override fun writeParentParcelable(parent: GroupKDBX?, parcel: Parcel, flags: Int) {
-        parcel.writeParcelable(parent, flags)
-    }
-
-    /**
-     * Decode a reference key with the FieldReferencesEngine
-     * @param decodeRef
-     * @param key
-     * @return
-     */
-    private fun decodeRefKey(decodeRef: Boolean, key: String): String {
-        return fields[key]?.toString()?.let { text ->
-            return if (decodeRef) {
-                if (mDatabase == null) text else FieldReferencesEngine().compile(text, this, mDatabase!!)
-            } else text
-        } ?: ""
-    }
-
-    override var title: String
-        get() = decodeRefKey(mDecodeRef, STR_TITLE)
-        set(value) {
-            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectTitle
-            fields[STR_TITLE] = ProtectedString(protect, value)
-        }
-
-    override val type: Type
-        get() = Type.ENTRY
-
-    override var username: String
-        get() = decodeRefKey(mDecodeRef, STR_USERNAME)
-        set(value) {
-            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectUserName
-            fields[STR_USERNAME] = ProtectedString(protect, value)
-        }
-
-    override var password: String
-        get() = decodeRefKey(mDecodeRef, STR_PASSWORD)
-        set(value) {
-            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectPassword
-            fields[STR_PASSWORD] = ProtectedString(protect, value)
-        }
-
-    override var url
-        get() = decodeRefKey(mDecodeRef, STR_URL)
-        set(value) {
-            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectUrl
-            fields[STR_URL] = ProtectedString(protect, value)
-        }
-
-    override var notes: String
-        get() = decodeRefKey(mDecodeRef, STR_NOTES)
-        set(value) {
-            val protect = mDatabase != null && mDatabase!!.memoryProtection.protectNotes
-            fields[STR_NOTES] = ProtectedString(protect, value)
-        }
-
-    override var usageCount = UnsignedLong(0)
-
-    override var locationChanged = DateInstant()
-
     fun afterChangeParent() {
         locationChanged = DateInstant()
     }
@@ -245,7 +270,7 @@ class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
             field.clear()
             for ((key, value) in fields) {
                 if (!isStandardField(key)) {
-                    field[key] = ProtectedString(value.isProtected, decodeRefKey(mDecodeRef, key))
+                    field[key] = ProtectedString(value.isProtected, decodeRefKey(mDecodeRef, key, 0))
                 }
             }
             return field
@@ -302,14 +327,6 @@ class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
         return size
     }
 
-    override fun putCustomData(key: String, value: String) {
-        customData[key] = value
-    }
-
-    override fun containsCustomData(): Boolean {
-        return customData.isNotEmpty()
-    }
-
     fun addEntryToHistory(entry: EntryKDBX) {
         history.add(entry)
     }
@@ -349,6 +366,8 @@ class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
         const val STR_URL = "URL"
         const val STR_NOTES = "Notes"
 
+        private const val FIXED_LENGTH_SIZE: Long = 128 // Approximate fixed length size
+
         fun newCustomNameAllowed(name: String): Boolean {
             return !(name.equals(STR_TITLE, true)
                     || name.equals(STR_USERNAME, true)
@@ -367,7 +386,5 @@ class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
                 return arrayOfNulls(size)
             }
         }
-
-        private const val FIXED_LENGTH_SIZE: Long = 128 // Approximate fixed length size
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryVersioned.kt

@@ -36,6 +36,10 @@ abstract class EntryVersioned
 
     constructor(parcel: Parcel) : super(parcel)
 
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        super.writeToParcel(dest, flags)
+    }
+
     override fun nodeIndexInParentForNaturalOrder(): Int {
         if (nodeIndexInParentForNaturalOrder == -1) {
             val numberOfGroups = parent?.getChildGroups()?.size

app/src/main/java/com/kunzisoft/keepass/database/element/entry/FieldReferencesEngine.kt

@@ -20,267 +20,123 @@
 package com.kunzisoft.keepass.database.element.entry
 
 import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
-import com.kunzisoft.keepass.database.element.group.GroupKDBX
-import com.kunzisoft.keepass.database.search.EntryKDBXSearchHandler
-import com.kunzisoft.keepass.database.search.SearchParameters
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
+import com.kunzisoft.keepass.utils.UuidUtil
 import java.util.*
 
-class FieldReferencesEngine {
+class FieldReferencesEngine(private val mDatabase: DatabaseKDBX) {
 
-    inner class TargetResult(var entry: EntryKDBX?, var wanted: Char)
+    // Key : <WantedField>@<SearchIn>:<Text>
+    // Value : content
+    private var refsCache: MutableMap<String, String?> = HashMap()
 
-    private inner class SprContextV4 {
-
-        var databaseV4: DatabaseKDBX? = null
-        var entry: EntryKDBX
-        var refsCache: MutableMap<String, String> = HashMap()
-
-        internal constructor(db: DatabaseKDBX, entry: EntryKDBX) {
-            this.databaseV4 = db
-            this.entry = entry
-        }
-
-        internal constructor(source: SprContextV4) {
-            this.databaseV4 = source.databaseV4
-            this.entry = source.entry
-            this.refsCache = source.refsCache
-        }
+    fun clear() {
+        refsCache.clear()
     }
 
-    fun compile(text: String, entry: EntryKDBX, database: DatabaseKDBX): String {
-        return compileInternal(text, SprContextV4(database, entry), 0)
-    }
-
-    private fun compileInternal(text: String?, sprContextV4: SprContextV4?, recursionLevel: Int): String {
-        if (text == null) {
-            return ""
-        }
-        if (sprContextV4 == null) {
-            return ""
-        }
+    fun compile(textReference: String, recursionLevel: Int): String {
         return if (recursionLevel >= MAX_RECURSION_DEPTH) {
             ""
-        } else fillRefPlaceholders(text, sprContextV4, recursionLevel)
-
+        } else
+            fillReferencesPlaceholders(textReference, recursionLevel)
     }
 
-    private fun fillRefPlaceholders(textReference: String, contextV4: SprContextV4, recursionLevel: Int): String {
-        var text = textReference
-
-        if (contextV4.databaseV4 == null) {
-            return text
-        }
+    /**
+     * Manage placeholders with {REF:<WantedField>@<SearchIn>:<Text>}
+     */
+    private fun fillReferencesPlaceholders(textReference: String, recursionLevel: Int): String {
+        var textValue = textReference
 
         var offset = 0
-        for (i in 0..19) {
-            text = fillRefsUsingCache(text, contextV4)
+        var numberInlineRef = 0
+        while (textValue.contains(STR_REF_START)
+                && numberInlineRef <= MAX_INLINE_REF) {
+            numberInlineRef++
 
-            val start = text.indexOf(STR_REF_START, offset, true)
+            textValue = fillReferencesUsingCache(textValue)
+
+            val start = textValue.indexOf(STR_REF_START, offset, true)
             if (start < 0) {
                 break
             }
-            val end = text.indexOf(STR_REF_END, start + 1, true)
+            val end = textValue.indexOf(STR_REF_END, offset, true)
             if (end <= start) {
                 break
             }
 
-            val fullRef = text.substring(start, end + 1)
-            val result = findRefTarget(fullRef, contextV4)
+            val reference = textValue.substring(start + STR_REF_START.length, end)
+            val fullReference = "$STR_REF_START$reference$STR_REF_END"
 
-            if (result != null) {
-                val found = result.entry
-                found?.stopToManageFieldReferences()
-                val wanted = result.wanted
-
-                var data: String? = null
-                when (wanted) {
-                    'T' -> data = found?.title
-                    'U' -> data = found?.username
-                    'A' -> data = found?.url
-                    'P' -> data = found?.password
-                    'N' -> data = found?.notes
-                    'I' -> data = found?.nodeId.toString()
-                }
-
-                if (data != null && found != null) {
-                    val subCtx = SprContextV4(contextV4)
-                    subCtx.entry = found
-
-                    val innerContent = compileInternal(data, subCtx, recursionLevel + 1)
-                    addRefsToCache(fullRef, innerContent, contextV4)
-                    text = fillRefsUsingCache(text, contextV4)
-                } else {
-                    offset = start + 1
+            if (!refsCache.containsKey(fullReference)) {
+                val result = findReferenceTarget(reference)
+                val entryFound = result.entry
+                val newRecursionLevel = recursionLevel + 1
+                val data: String? = when (result.wanted) {
+                    'T' -> entryFound?.decodeTitleKey(newRecursionLevel)
+                    'U' -> entryFound?.decodeUsernameKey(newRecursionLevel)
+                    'A' -> entryFound?.decodeUrlKey(newRecursionLevel)
+                    'P' -> entryFound?.decodePasswordKey(newRecursionLevel)
+                    'N' -> entryFound?.decodeNotesKey(newRecursionLevel)
+                    'I' -> UuidUtil.toHexString(entryFound?.nodeId?.id)
+                    else -> null
                 }
+                refsCache[fullReference] = data
+                textValue = fillReferencesUsingCache(textValue)
             }
 
+            offset = end
         }
-
-        return text
+        return textValue
     }
 
-    private fun findRefTarget(fullReference: String?, contextV4: SprContextV4): TargetResult? {
-        var fullRef: String? = fullReference ?: return null
-
-        fullRef = fullRef!!.toUpperCase(Locale.ENGLISH)
-        if (!fullRef.startsWith(STR_REF_START) || !fullRef.endsWith(STR_REF_END)) {
-            return null
-        }
-
-        val ref = fullRef.substring(STR_REF_START.length, fullRef.length - STR_REF_END.length)
-        if (ref.length <= 4) {
-            return null
-        }
-        if (ref[1] != '@') {
-            return null
-        }
-        if (ref[3] != ':') {
-            return null
-        }
-
-        val scan = Character.toUpperCase(ref[2])
-        val wanted = Character.toUpperCase(ref[0])
-
-        val searchParameters = SearchParameters()
-        searchParameters.setupNone()
-
-        searchParameters.searchString = ref.substring(4)
-        when (scan) {
-            'T' -> searchParameters.searchInTitles = true
-            'U' -> searchParameters.searchInUserNames = true
-            'A' -> searchParameters.searchInUrls = true
-            'P' -> searchParameters.searchInPasswords = true
-            'N' -> searchParameters.searchInNotes = true
-            'I' -> searchParameters.searchInUUIDs = true
-            'O' -> searchParameters.searchInOther = true
-            else -> return null
-        }
-
-        val list = ArrayList<EntryKDBX>()
-        searchEntries(contextV4.databaseV4?.rootGroup, searchParameters, list)
-
-        return if (list.size > 0) {
-            TargetResult(list[0], wanted)
-        } else null
-
-    }
-
-    private fun addRefsToCache(ref: String?, value: String?, ctx: SprContextV4?) {
-        if (ref == null) {
-            return
-        }
-        if (value == null) {
-            return
-        }
-        if (ctx == null) {
-            return
-        }
-
-        if (!ctx.refsCache.containsKey(ref)) {
-            ctx.refsCache[ref] = value
-        }
-    }
-
-    private fun fillRefsUsingCache(text: String, sprContextV4: SprContextV4): String {
+    private fun fillReferencesUsingCache(text: String): String {
         var newText = text
-        for ((key, value) in sprContextV4.refsCache) {
-            newText = text.replace(key, value, true)
+        for ((key, value) in refsCache) {
+            // Replace by key if value not found
+            newText = newText.replace(key, value ?: key, true)
         }
         return newText
     }
 
-    private fun searchEntries(root: GroupKDBX?, searchParameters: SearchParameters?, listStorage: MutableList<EntryKDBX>?) {
-        if (searchParameters == null) {
-            return
+    private fun findReferenceTarget(reference: String): TargetResult {
+
+        val targetResult = TargetResult(null, 'J')
+
+        if (reference.length <= 4) {
+            return targetResult
         }
-        if (listStorage == null) {
-            return
+        if (reference[1] != '@') {
+            return targetResult
+        }
+        if (reference[3] != ':') {
+            return targetResult
         }
 
-        val terms = splitStringTerms(searchParameters.searchString)
-        if (terms.size <= 1 || searchParameters.regularExpression) {
-            root!!.doForEachChild(EntryKDBXSearchHandler(searchParameters, listStorage), null)
-            return
-        }
-
-        // Search longest term first
-        val stringLengthComparator = Comparator<String> { lhs, rhs -> lhs.length - rhs.length }
-        Collections.sort(terms, stringLengthComparator)
-
-        val fullSearch = searchParameters.searchString
-        var childEntries: List<EntryKDBX>? = root!!.getChildEntries()
-        for (i in terms.indices) {
-            val pgNew = ArrayList<EntryKDBX>()
-
-            searchParameters.searchString = terms[i]
-
-            var negate = false
-            if (searchParameters.searchString.startsWith("-")) {
-                searchParameters.searchString = searchParameters.searchString.substring(1)
-                negate = searchParameters.searchString.isNotEmpty()
-            }
-
-            if (!root.doForEachChild(EntryKDBXSearchHandler(searchParameters, pgNew), null)) {
-                childEntries = null
-                break
-            }
-
-            childEntries = if (negate) {
-                val complement = ArrayList<EntryKDBX>()
-                for (entry in childEntries!!) {
-                    if (!pgNew.contains(entry)) {
-                        complement.add(entry)
-                    }
-                }
-                complement
-            } else {
-                pgNew
-            }
-        }
-
-        if (childEntries != null) {
-            listStorage.addAll(childEntries)
-        }
-        searchParameters.searchString = fullSearch
-    }
-
-    /**
-     * Create a list of String by split text when ' ', '\t', '\r' or '\n' is found
-     */
-    private fun splitStringTerms(text: String?): List<String> {
-        val list = ArrayList<String>()
-        if (text == null) {
-            return list
-        }
-
-        val stringBuilder = StringBuilder()
-        var quoted = false
-
-        for (element in text) {
-
-            if ((element == ' ' || element == '\t' || element == '\r' || element == '\n') && !quoted) {
-
-                val len = stringBuilder.length
-                when {
-                    len > 0 -> {
-                        list.add(stringBuilder.toString())
-                        stringBuilder.delete(0, len)
-                    }
-                    element == '\"' -> quoted = !quoted
-                    else -> stringBuilder.append(element)
+        targetResult.wanted = Character.toUpperCase(reference[0])
+        val searchIn = Character.toUpperCase(reference[2])
+        val searchQuery = reference.substring(4)
+        targetResult.entry = when (searchIn) {
+            'T' -> mDatabase.getEntryByTitle(searchQuery)
+            'U' -> mDatabase.getEntryByUsername(searchQuery)
+            'A' -> mDatabase.getEntryByURL(searchQuery)
+            'P' -> mDatabase.getEntryByPassword(searchQuery)
+            'N' -> mDatabase.getEntryByNotes(searchQuery)
+            'I' -> {
+                UuidUtil.fromHexString(searchQuery)?.let { uuid ->
+                    mDatabase.getEntryById(NodeIdUUID(uuid))
                 }
             }
+            'O' -> mDatabase.getEntryByCustomData(searchQuery)
+            else -> null
         }
-
-        if (stringBuilder.isNotEmpty()) {
-            list.add(stringBuilder.toString())
-        }
-
-        return list
+        return targetResult
     }
 
+    private data class TargetResult(var entry: EntryKDBX?, var wanted: Char)
+
     companion object {
-        private const val MAX_RECURSION_DEPTH = 12
+        private const val MAX_RECURSION_DEPTH = 10
+        private const val MAX_INLINE_REF = 10
         private const val STR_REF_START = "{REF:"
         private const val STR_REF_END = "}"
     }

app/src/main/java/com/kunzisoft/keepass/database/element/group/GroupKDB.kt

@@ -31,14 +31,12 @@ import java.util.*
 
 class GroupKDB : GroupVersioned<Int, UUID, GroupKDB, EntryKDB>, NodeKDBInterface {
 
-    var level = 0 // short
     // Used by KeePass internally, don't use
     var groupFlags = 0
 
     constructor() : super()
 
     constructor(parcel: Parcel) : super(parcel) {
-        level = parcel.readInt()
         groupFlags = parcel.readInt()
     }
 
@@ -52,13 +50,11 @@ class GroupKDB : GroupVersioned<Int, UUID, GroupKDB, EntryKDB>, NodeKDBInterface
 
     override fun writeToParcel(dest: Parcel, flags: Int) {
         super.writeToParcel(dest, flags)
-        dest.writeInt(level)
         dest.writeInt(groupFlags)
     }
 
     fun updateWith(source: GroupKDB) {
         super.updateWith(source)
-        level = source.level
         groupFlags = source.groupFlags
     }
 
@@ -73,15 +69,12 @@ class GroupKDB : GroupVersioned<Int, UUID, GroupKDB, EntryKDB>, NodeKDBInterface
         return NodeIdInt(nodeId.id)
     }
 
-    override fun afterAssignNewParent() {
-        if (parent != null)
-            level = parent!!.level + 1
-    }
-
     fun setGroupId(groupId: Int) {
         this.nodeId = NodeIdInt(groupId)
     }
 
+    override fun afterAssignNewParent() {}
+
     companion object {
 
         @JvmField

app/src/main/java/com/kunzisoft/keepass/database/element/group/GroupKDBX.kt

@@ -20,8 +20,11 @@
 package com.kunzisoft.keepass.database.element.group
 
 import android.os.Parcel
+import android.os.ParcelUuid
 import android.os.Parcelable
+import com.kunzisoft.keepass.database.element.CustomData
 import com.kunzisoft.keepass.database.element.DateInstant
+import com.kunzisoft.keepass.database.element.Tags
 import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import com.kunzisoft.keepass.database.element.entry.EntryKDBX
 import com.kunzisoft.keepass.database.element.node.NodeId
@@ -33,14 +36,17 @@ import java.util.*
 
 class GroupKDBX : GroupVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInterface {
 
-    private val customData = HashMap<String, String>()
+    override var usageCount = UnsignedLong(0)
+    override var locationChanged = DateInstant()
+    override var customData = CustomData()
     var notes = ""
-
     var isExpanded = true
     var defaultAutoTypeSequence = ""
     var enableAutoType: Boolean? = null
     var enableSearching: Boolean? = null
     var lastTopVisibleEntry: UUID = DatabaseVersioned.UUID_ZERO
+    override var tags = Tags()
+    override var previousParentGroup: UUID = DatabaseVersioned.UUID_ZERO
 
     override var expires: Boolean = false
 
@@ -60,7 +66,7 @@ class GroupKDBX : GroupVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
     constructor(parcel: Parcel) : super(parcel) {
         usageCount = UnsignedLong(parcel.readLong())
         locationChanged = parcel.readParcelable(DateInstant::class.java.classLoader) ?: locationChanged
-        // TODO customData = ParcelableUtil.readStringParcelableMap(parcel);
+        customData = parcel.readParcelable(CustomData::class.java.classLoader) ?: CustomData()
         notes = parcel.readString() ?: notes
         isExpanded = parcel.readByte().toInt() != 0
         defaultAutoTypeSequence = parcel.readString() ?: defaultAutoTypeSequence
@@ -69,6 +75,8 @@ class GroupKDBX : GroupVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
         val isSearchingEnabled = parcel.readInt()
         enableSearching = if (isSearchingEnabled == -1) null else isSearchingEnabled == 1
         lastTopVisibleEntry = parcel.readSerializable() as UUID
+        tags = parcel.readParcelable(Tags::class.java.classLoader) ?: tags
+        previousParentGroup = parcel.readParcelable<ParcelUuid>(ParcelUuid::class.java.classLoader)?.uuid ?: DatabaseVersioned.UUID_ZERO
     }
 
     override fun readParentParcelable(parcel: Parcel): GroupKDBX? {
@@ -83,13 +91,15 @@ class GroupKDBX : GroupVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
         super.writeToParcel(dest, flags)
         dest.writeLong(usageCount.toKotlinLong())
         dest.writeParcelable(locationChanged, flags)
-        // TODO ParcelableUtil.writeStringParcelableMap(dest, customData);
+        dest.writeParcelable(customData, flags)
         dest.writeString(notes)
         dest.writeByte((if (isExpanded) 1 else 0).toByte())
         dest.writeString(defaultAutoTypeSequence)
         dest.writeInt(if (enableAutoType == null) -1 else if (enableAutoType!!) 1 else 0)
         dest.writeInt(if (enableSearching == null) -1 else if (enableSearching!!) 1 else 0)
         dest.writeSerializable(lastTopVisibleEntry)
+        dest.writeParcelable(tags, flags)
+        dest.writeParcelable(ParcelUuid(previousParentGroup), flags)
     }
 
     fun updateWith(source: GroupKDBX) {
@@ -97,34 +107,21 @@ class GroupKDBX : GroupVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInte
         usageCount = source.usageCount
         locationChanged = DateInstant(source.locationChanged)
         // Add all custom elements in map
-        customData.clear()
-        for ((key, value) in source.customData) {
-            customData[key] = value
-        }
+        customData = CustomData(source.customData)
         notes = source.notes
         isExpanded = source.isExpanded
         defaultAutoTypeSequence = source.defaultAutoTypeSequence
         enableAutoType = source.enableAutoType
         enableSearching = source.enableSearching
         lastTopVisibleEntry = source.lastTopVisibleEntry
+        tags = source.tags
+        previousParentGroup = source.previousParentGroup
     }
 
-    override var usageCount = UnsignedLong(0)
-
-    override var locationChanged = DateInstant()
-
     override fun afterAssignNewParent() {
         locationChanged = DateInstant()
     }
 
-    override fun putCustomData(key: String, value: String) {
-        customData[key] = value
-    }
-
-    override fun containsCustomData(): Boolean {
-        return customData.isNotEmpty()
-    }
-
     companion object {
 
         @JvmField

app/src/main/java/com/kunzisoft/keepass/database/element/group/GroupVersioned.kt

@@ -63,6 +63,17 @@ abstract class GroupVersioned
         get() = titleGroup
         set(value) { titleGroup = value }
 
+    /**
+     *  To determine the level from the root group (root group level is -1)
+     */
+    fun getLevel(): Int {
+        var level = -1
+        parent?.let { parent ->
+            level = parent.getLevel() + 1
+        }
+        return level
+    }
+
     override fun getChildGroups(): List<Group> {
         return childGroups
     }

app/src/main/java/com/kunzisoft/keepass/database/element/group/GroupVersionedInterface.kt

@@ -45,23 +45,64 @@ interface GroupVersionedInterface<Group: GroupVersionedInterface<Group, Entry>,
         groupHandler.operate(this as Group)
     }
 
-    fun doForEachChild(entryHandler: NodeHandler<Entry>,
+    fun doForEachChild(entryHandler: NodeHandler<Entry>?,
                        groupHandler: NodeHandler<Group>?,
-                       stopIterationWhenGroupHandlerFails: Boolean = true): Boolean {
-        for (entry in this.getChildEntries()) {
-            if (!entryHandler.operate(entry))
-                return false
+                       stopIterationWhenGroupHandlerOperateFalse: Boolean = true): Boolean {
+        if (entryHandler != null) {
+            for (entry in this.getChildEntries()) {
+                if (!entryHandler.operate(entry))
+                    return false
+            }
         }
         for (group in this.getChildGroups()) {
             var doActionForChild = true
             if (groupHandler != null && !groupHandler.operate(group)) {
                 doActionForChild = false
-                if (stopIterationWhenGroupHandlerFails)
+                if (stopIterationWhenGroupHandlerOperateFalse)
                     return false
             }
             if (doActionForChild)
-                group.doForEachChild(entryHandler, groupHandler)
+                group.doForEachChild(entryHandler, groupHandler, stopIterationWhenGroupHandlerOperateFalse)
         }
         return true
     }
+
+    fun searchChildEntry(criteria: (entry: Entry) -> Boolean): Entry? {
+        return searchChildEntry(this, criteria)
+    }
+
+    private fun searchChildEntry(rootGroup: GroupVersionedInterface<Group, Entry>,
+                                 criteria: (entry: Entry) -> Boolean): Entry? {
+        for (childEntry in rootGroup.getChildEntries()) {
+            if (criteria.invoke(childEntry)) {
+                return childEntry
+            }
+        }
+        for (group in rootGroup.getChildGroups()) {
+            val searchChildEntry = searchChildEntry(group, criteria)
+            if (searchChildEntry != null) {
+                return searchChildEntry
+            }
+        }
+        return null
+    }
+
+    fun searchChildGroup(criteria: (group: Group) -> Boolean): Group? {
+        return searchChildGroup(this, criteria)
+    }
+
+    private fun searchChildGroup(rootGroup: GroupVersionedInterface<Group, Entry>,
+                                 criteria: (group: Group) -> Boolean): Group? {
+        for (childGroup in rootGroup.getChildGroups()) {
+            if (criteria.invoke(childGroup)) {
+                return childGroup
+            } else {
+                val subGroup = searchChildGroup(childGroup, criteria)
+                if (subGroup != null) {
+                    return subGroup
+                }
+            }
+        }
+        return null
+    }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/icon/IconImage.kt

@@ -22,7 +22,7 @@ package com.kunzisoft.keepass.database.element.icon
 import android.os.Parcel
 import android.os.Parcelable
 
-class IconImage() : IconImageDraw(), Parcelable {
+class IconImage() : IconImageDraw() {
 
     var standard: IconImageStandard = IconImageStandard()
     var custom: IconImageCustom = IconImageCustom()

app/src/main/java/com/kunzisoft/keepass/database/element/icon/IconImageCustom.kt

@@ -22,27 +22,38 @@ package com.kunzisoft.keepass.database.element.icon
 import android.os.Parcel
 import android.os.ParcelUuid
 import android.os.Parcelable
+import com.kunzisoft.keepass.database.element.DateInstant
 import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import java.util.*
 
-class IconImageCustom : Parcelable, IconImageDraw {
+class IconImageCustom : IconImageDraw {
 
-    var uuid: UUID
+    val uuid: UUID
+    var name: String = ""
+    var lastModificationTime: DateInstant? = null
 
-    constructor() {
-        uuid = DatabaseVersioned.UUID_ZERO
+    constructor(name: String = "", lastModificationTime: DateInstant? = null) {
+        this.uuid = DatabaseVersioned.UUID_ZERO
+        this.name = name
+        this.lastModificationTime = lastModificationTime
     }
 
-    constructor(uuid: UUID) {
+    constructor(uuid: UUID, name: String = "", lastModificationTime: DateInstant? = null) {
         this.uuid = uuid
+        this.name = name
+        this.lastModificationTime = lastModificationTime
     }
 
     constructor(parcel: Parcel) {
         uuid = parcel.readParcelable<ParcelUuid>(ParcelUuid::class.java.classLoader)?.uuid ?: DatabaseVersioned.UUID_ZERO
+        name = parcel.readString() ?: name
+        lastModificationTime = parcel.readParcelable(DateInstant::class.java.classLoader)
     }
 
     override fun writeToParcel(dest: Parcel, flags: Int) {
         dest.writeParcelable(ParcelUuid(uuid), flags)
+        dest.writeString(name)
+        dest.writeParcelable(lastModificationTime, flags)
     }
 
     override fun describeContents(): Int {

app/src/main/java/com/kunzisoft/keepass/database/element/icon/IconImageDraw.kt

@@ -19,7 +19,9 @@
  */
 package com.kunzisoft.keepass.database.element.icon
 
-abstract class IconImageDraw {
+import android.os.Parcelable
+
+abstract class IconImageDraw : Parcelable {
 
     var selected = false
     /**

app/src/main/java/com/kunzisoft/keepass/database/element/icon/IconImageStandard.kt

@@ -23,7 +23,7 @@ import android.os.Parcel
 import android.os.Parcelable
 import com.kunzisoft.keepass.icons.IconPack.Companion.NB_ICONS
 
-class IconImageStandard : Parcelable, IconImageDraw {
+class IconImageStandard : IconImageDraw {
 
     val id: Int
 

app/src/main/java/com/kunzisoft/keepass/database/element/icon/IconsManager.kt

@@ -20,6 +20,7 @@
 package com.kunzisoft.keepass.database.element.icon
 
 import android.util.Log
+import com.kunzisoft.keepass.database.element.DateInstant
 import com.kunzisoft.keepass.database.element.binary.BinaryCache
 import com.kunzisoft.keepass.database.element.binary.BinaryData
 import com.kunzisoft.keepass.database.element.binary.CustomIconPool
@@ -27,7 +28,7 @@ import com.kunzisoft.keepass.database.element.icon.IconImageStandard.Companion.K
 import com.kunzisoft.keepass.icons.IconPack.Companion.NB_ICONS
 import java.util.*
 
-class IconsManager(private val binaryCache: BinaryCache) {
+class IconsManager(binaryCache: BinaryCache) {
 
     private val standardCache = List(NB_ICONS) {
         IconImageStandard(it)
@@ -52,17 +53,15 @@ class IconsManager(private val binaryCache: BinaryCache) {
     fun buildNewCustomIcon(key: UUID? = null,
                            result: (IconImageCustom, BinaryData?) -> Unit) {
         // Create a binary file for a brand new custom icon
-        addCustomIcon(key, false, result)
+        addCustomIcon(key, "", null, false, result)
     }
 
     fun addCustomIcon(key: UUID? = null,
+                      name: String,
+                      lastModificationTime: DateInstant?,
                       smallSize: Boolean,
                       result: (IconImageCustom, BinaryData?) -> Unit) {
-        val keyBinary = customCache.put(key) { uniqueBinaryId ->
-            // Create a byte array for better performance with small data
-            binaryCache.getBinaryData(uniqueBinaryId, smallSize)
-        }
-        result.invoke(IconImageCustom(keyBinary.keys.first()), keyBinary.binary)
+        customCache.put(key, name, lastModificationTime, smallSize, result)
     }
 
     fun getIcon(iconUuid: UUID): IconImageCustom {
@@ -88,8 +87,12 @@ class IconsManager(private val binaryCache: BinaryCache) {
     }
 
     fun doForEachCustomIcon(action: (IconImageCustom, BinaryData) -> Unit) {
-        customCache.doForEachBinary { key, binary ->
-            action.invoke(IconImageCustom(key), binary)
+        customCache.doForEachCustomIcon(action)
+    }
+
+    fun containsCustomIconWithNameOrLastModificationTime(): Boolean {
+        return customCache.any { customIcon ->
+            customIcon.name.isNotEmpty() || customIcon.lastModificationTime != null
         }
     }
 

app/src/main/java/com/kunzisoft/keepass/database/element/node/NodeKDBXInterface.kt

@@ -19,17 +19,17 @@
  */
 package com.kunzisoft.keepass.database.element.node
 
+import com.kunzisoft.keepass.database.element.CustomData
 import com.kunzisoft.keepass.database.element.DateInstant
+import com.kunzisoft.keepass.database.element.Tags
 import com.kunzisoft.keepass.utils.UnsignedLong
+import java.util.*
 
 interface NodeKDBXInterface : NodeTimeInterface {
 
     var usageCount: UnsignedLong
-
     var locationChanged: DateInstant
-
-    fun putCustomData(key: String, value: String)
-
-    fun containsCustomData(): Boolean
-
+    var customData: CustomData
+    var tags: Tags
+    var previousParentGroup: UUID
 }

app/src/main/java/com/kunzisoft/keepass/database/element/node/NodeVersionedInterface.kt

@@ -25,15 +25,7 @@ import com.kunzisoft.keepass.database.element.icon.IconImage
 interface NodeVersionedInterface<ParentGroup> : NodeTimeInterface, Parcelable {
 
     var title: String
-
-    /**
-     * @return Visual icon
-     */
     var icon: IconImage
-
-    /**
-     * @return Type of Node
-     */
     val type: Type
 
     /**

app/src/main/java/com/kunzisoft/keepass/database/exception/DatabaseException.kt

@@ -114,7 +114,7 @@ class NoMemoryDatabaseException: LoadDatabaseException {
     constructor(exception: Throwable) : super(exception)
 }
 
-class EntryDatabaseException: LoadDatabaseException {
+class MoveEntryDatabaseException: LoadDatabaseException {
     @StringRes
     override var errorId: Int = R.string.error_move_entry_here
     constructor() : super()
@@ -123,7 +123,7 @@ class EntryDatabaseException: LoadDatabaseException {
 
 class MoveGroupDatabaseException: LoadDatabaseException {
     @StringRes
-    override var errorId: Int = R.string.error_move_folder_in_itself
+    override var errorId: Int = R.string.error_move_group_here
     constructor() : super()
     constructor(exception: Throwable) : super(exception)
 }

app/src/main/java/com/kunzisoft/keepass/database/file/DatabaseHeaderKDBX.kt

@@ -19,9 +19,9 @@
  */
 package com.kunzisoft.keepass.database.file
 
-import com.kunzisoft.keepass.database.crypto.CrsAlgorithm
 import com.kunzisoft.encrypt.HashManager
 import com.kunzisoft.keepass.database.action.node.NodeHandler
+import com.kunzisoft.keepass.database.crypto.CrsAlgorithm
 import com.kunzisoft.keepass.database.crypto.VariantDictionary
 import com.kunzisoft.keepass.database.crypto.kdf.AesKdf
 import com.kunzisoft.keepass.database.crypto.kdf.KdfFactory
@@ -91,41 +91,64 @@ class DatabaseHeaderKDBX(private val databaseV4: DatabaseKDBX) : DatabaseHeader(
         this.masterSeed = ByteArray(32)
     }
 
-    private inner class NodeHasCustomData<T: NodeKDBXInterface> : NodeHandler<T>() {
-
-        internal var containsCustomData = false
-
+    private open class NodeOperationHandler<T: NodeKDBXInterface> : NodeHandler<T>() {
+        var containsCustomData = false
         override fun operate(node: T): Boolean {
-            if (node.containsCustomData()) {
+            if (node.customData.isNotEmpty()) {
                 containsCustomData = true
-                return false
             }
             return true
         }
     }
 
-    private fun getMinKdbxVersion(databaseV4: DatabaseKDBX): UnsignedInt {
+    private inner class EntryOperationHandler: NodeOperationHandler<EntryKDBX>() {
+        var passwordQualityEstimationDisabled = false
+        override fun operate(node: EntryKDBX): Boolean {
+            if (!node.qualityCheck) {
+                passwordQualityEstimationDisabled = true
+            }
+            return super.operate(node)
+        }
+    }
+
+    private inner class GroupOperationHandler: NodeOperationHandler<GroupKDBX>() {
+        var containsTags = false
+        override fun operate(node: GroupKDBX): Boolean {
+            if (!node.tags.isEmpty())
+                containsTags = true
+            return super.operate(node)
+        }
+    }
+
+    private fun getMinKdbxVersion(databaseKDBX: DatabaseKDBX): UnsignedInt {
+        val entryHandler = EntryOperationHandler()
+        val groupHandler = GroupOperationHandler()
+        databaseKDBX.rootGroup?.doForEachChildAndForIt(entryHandler, groupHandler)
+
+        // https://keepass.info/help/kb/kdbx_4.1.html
+        val containsGroupWithTag = groupHandler.containsTags
+        val containsEntryWithPasswordQualityEstimationDisabled = entryHandler.passwordQualityEstimationDisabled
+        val containsCustomIconWithNameOrLastModificationTime = databaseKDBX.iconsManager.containsCustomIconWithNameOrLastModificationTime()
+        val containsHeaderCustomDataWithLastModificationTime = databaseKDBX.customData.containsItemWithLastModificationTime()
+
         // https://keepass.info/help/kb/kdbx_4.html
+        // If AES is not use, it's at least 4.0
+        val kdfIsNotAes = databaseKDBX.kdfParameters?.uuid != AesKdf.CIPHER_UUID
+        val containsHeaderCustomData = databaseKDBX.customData.isNotEmpty()
+        val containsNodeCustomData = entryHandler.containsCustomData || groupHandler.containsCustomData
 
-        // Return v4 if AES is not use
-        if (databaseV4.kdfParameters != null
-                && databaseV4.kdfParameters!!.uuid != AesKdf.CIPHER_UUID) {
-            return FILE_VERSION_32_4
-        }
-
-        if (databaseV4.rootGroup == null) {
-            return FILE_VERSION_32_3
-        }
-
-        val entryHandler = NodeHasCustomData<EntryKDBX>()
-        val groupHandler = NodeHasCustomData<GroupKDBX>()
-        databaseV4.rootGroup?.doForEachChildAndForIt(entryHandler, groupHandler)
-        return if (databaseV4.containsCustomData()
-                    || entryHandler.containsCustomData
-                    || groupHandler.containsCustomData) {
-            FILE_VERSION_32_4
+        // Check each condition to determine version
+        return if (containsGroupWithTag
+                || containsEntryWithPasswordQualityEstimationDisabled
+                || containsCustomIconWithNameOrLastModificationTime
+                || containsHeaderCustomDataWithLastModificationTime) {
+            FILE_VERSION_41
+        } else if (kdfIsNotAes
+                || containsHeaderCustomData
+                || containsNodeCustomData) {
+            FILE_VERSION_40
         } else {
-            FILE_VERSION_32_3
+            FILE_VERSION_31
         }
     }
 
@@ -167,7 +190,7 @@ class DatabaseHeaderKDBX(private val databaseV4: DatabaseKDBX) : DatabaseHeader(
     private fun readHeaderField(dis: InputStream): Boolean {
         val fieldID = dis.read().toByte()
 
-        val fieldSize: Int = if (version.isBefore(FILE_VERSION_32_4)) {
+        val fieldSize: Int = if (version.isBefore(FILE_VERSION_40)) {
             dis.readBytes2ToUShort()
         } else {
             dis.readBytes4ToUInt().toKotlinInt()
@@ -194,20 +217,20 @@ class DatabaseHeaderKDBX(private val databaseV4: DatabaseKDBX) : DatabaseHeader(
 
             PwDbHeaderV4Fields.MasterSeed -> masterSeed = fieldData
 
-            PwDbHeaderV4Fields.TransformSeed -> if (version.isBefore(FILE_VERSION_32_4))
+            PwDbHeaderV4Fields.TransformSeed -> if (version.isBefore(FILE_VERSION_40))
                 transformSeed = fieldData
 
-            PwDbHeaderV4Fields.TransformRounds -> if (version.isBefore(FILE_VERSION_32_4))
+            PwDbHeaderV4Fields.TransformRounds -> if (version.isBefore(FILE_VERSION_40))
                 setTransformRound(fieldData)
 
             PwDbHeaderV4Fields.EncryptionIV -> encryptionIV = fieldData
 
-            PwDbHeaderV4Fields.InnerRandomstreamKey -> if (version.isBefore(FILE_VERSION_32_4))
+            PwDbHeaderV4Fields.InnerRandomstreamKey -> if (version.isBefore(FILE_VERSION_40))
                 innerRandomStreamKey = fieldData
 
             PwDbHeaderV4Fields.StreamStartBytes -> streamStartBytes = fieldData
 
-            PwDbHeaderV4Fields.InnerRandomStreamID -> if (version.isBefore(FILE_VERSION_32_4))
+            PwDbHeaderV4Fields.InnerRandomStreamID -> if (version.isBefore(FILE_VERSION_40))
                 setRandomStreamID(fieldData)
 
             PwDbHeaderV4Fields.KdfParameters -> databaseV4.kdfParameters = KdfParameters.deserialize(fieldData)
@@ -283,7 +306,7 @@ class DatabaseHeaderKDBX(private val databaseV4: DatabaseKDBX) : DatabaseHeader(
      */
     private fun validVersion(version: UnsignedInt): Boolean {
         return version.toKotlinInt() and FILE_VERSION_CRITICAL_MASK.toKotlinInt() <=
-                FILE_VERSION_32_4.toKotlinInt() and FILE_VERSION_CRITICAL_MASK.toKotlinInt()
+                FILE_VERSION_40.toKotlinInt() and FILE_VERSION_CRITICAL_MASK.toKotlinInt()
     }
 
     companion object {
@@ -292,8 +315,9 @@ class DatabaseHeaderKDBX(private val databaseV4: DatabaseKDBX) : DatabaseHeader(
         val DBSIG_2 = UnsignedInt(-0x4ab40499)
 
         private val FILE_VERSION_CRITICAL_MASK = UnsignedInt(-0x10000)
-        val FILE_VERSION_32_3 = UnsignedInt(0x00030001)
-        val FILE_VERSION_32_4 = UnsignedInt(0x00040000)
+        val FILE_VERSION_31 = UnsignedInt(0x00030001)
+        val FILE_VERSION_40 = UnsignedInt(0x00040000)
+        val FILE_VERSION_41 = UnsignedInt(0x00040001)
 
         fun getCompressionFromFlag(flag: UnsignedInt): CompressionAlgorithm? {
             return when (flag.toKotlinInt()) {

app/src/main/java/com/kunzisoft/keepass/database/file/DatabaseKDBXXML.kt

@@ -79,8 +79,10 @@ object DatabaseKDBXXML {
     const val ElemFgColor = "ForegroundColor"
     const val ElemBgColor = "BackgroundColor"
     const val ElemOverrideUrl = "OverrideURL"
+    const val ElemQualityCheck = "QualityCheck"
     const val ElemTimes = "Times"
     const val ElemTags = "Tags"
+    const val ElemPreviousParentGroup = "PreviousParentGroup"
 
     const val ElemCreationTime = "CreationTime"
     const val ElemLastModTime = "LastModificationTime"

app/src/main/java/com/kunzisoft/keepass/database/file/input/DatabaseInputKDB.kt

@@ -40,6 +40,7 @@ import java.security.MessageDigest
 import java.util.*
 import javax.crypto.Cipher
 import javax.crypto.CipherInputStream
+import kotlin.collections.HashMap
 
 
 /**
@@ -154,11 +155,10 @@ class DatabaseInputKDB(cacheDirectory: File,
 
             // New manual root because KDB contains multiple root groups (here available with getRootGroups())
             val newRoot = mDatabase.createGroup()
-            newRoot.level = -1
             mDatabase.rootGroup = newRoot
-            mDatabase.addGroupIndex(newRoot)
 
             // Import all nodes
+            val groupLevelList = HashMap<GroupKDB, Int>()
             var newGroup: GroupKDB? = null
             var newEntry: EntryKDB? = null
             var currentGroupNumber = 0
@@ -248,7 +248,7 @@ class DatabaseInputKDB(cacheDirectory: File,
                     }
                     0x0008 -> {
                         newGroup?.let { group ->
-                            group.level = cipherInputStream.readBytes2ToUShort()
+                            groupLevelList.put(group, cipherInputStream.readBytes2ToUShort())
                         } ?:
                         newEntry?.let { entry ->
                             entry.notes = cipherInputStream.readBytesToString(fieldSize)
@@ -318,7 +318,7 @@ class DatabaseInputKDB(cacheDirectory: File,
             if (!Arrays.equals(messageDigest.digest(), header.contentsHash)) {
                 throw InvalidCredentialsDatabaseException()
             }
-            constructTreeFromIndex()
+            constructTreeFromIndex(groupLevelList)
 
             stopContentTimer()
 
@@ -339,34 +339,40 @@ class DatabaseInputKDB(cacheDirectory: File,
         return mDatabase
     }
 
-    private fun buildTreeGroups(previousGroup: GroupKDB, currentGroup: GroupKDB, groupIterator: Iterator<GroupKDB>) {
+    private fun buildTreeGroups(groupLevelList: HashMap<GroupKDB, Int>,
+                                previousGroup: GroupKDB,
+                                currentGroup: GroupKDB,
+                                groupIterator: Iterator<GroupKDB>) {
 
-        if (currentGroup.parent == null && (previousGroup.level + 1) == currentGroup.level) {
+        val previousGroupLevel = groupLevelList[previousGroup] ?: -1
+        val currentGroupLevel = groupLevelList[currentGroup] ?: -1
+
+        if (currentGroup.parent == null && (previousGroupLevel + 1) == currentGroupLevel) {
             // Current group has an increment level compare to the previous, current group is a child
             previousGroup.addChildGroup(currentGroup)
             currentGroup.parent = previousGroup
-        } else if (previousGroup.parent != null && previousGroup.level == currentGroup.level) {
+        } else if (previousGroup.parent != null && previousGroupLevel == currentGroupLevel) {
             // In the same level, previous parent is the same as previous group
             previousGroup.parent!!.addChildGroup(currentGroup)
             currentGroup.parent = previousGroup.parent
         } else if (previousGroup.parent != null) {
             // Previous group has a higher level than the current group, check it's parent
-            buildTreeGroups(previousGroup.parent!!, currentGroup, groupIterator)
+            buildTreeGroups(groupLevelList, previousGroup.parent!!, currentGroup, groupIterator)
         }
 
         // Next current group
         if (groupIterator.hasNext()){
-            buildTreeGroups(currentGroup, groupIterator.next(), groupIterator)
+            buildTreeGroups(groupLevelList, currentGroup, groupIterator.next(), groupIterator)
         }
     }
 
-    private fun constructTreeFromIndex() {
-        mDatabase.rootGroup?.let {
+    private fun constructTreeFromIndex(groupLevelList: HashMap<GroupKDB, Int>) {
+        mDatabase.rootGroup?.let { root ->
 
             // add each group
             val groupIterator = mDatabase.getGroupIndexes().iterator()
             if (groupIterator.hasNext())
-                buildTreeGroups(it, groupIterator.next(), groupIterator)
+                buildTreeGroups(groupLevelList, root, groupIterator.next(), groupIterator)
 
             // add each child
             for (currentEntry in mDatabase.getEntryIndexes()) {

app/src/main/java/com/kunzisoft/keepass/database/file/input/DatabaseInputKDBX.kt

@@ -26,9 +26,7 @@ import com.kunzisoft.keepass.database.crypto.CipherEngine
 import com.kunzisoft.keepass.database.crypto.CrsAlgorithm
 import com.kunzisoft.keepass.database.crypto.EncryptionAlgorithm
 import com.kunzisoft.keepass.database.crypto.HmacBlock
-import com.kunzisoft.keepass.database.element.Attachment
-import com.kunzisoft.keepass.database.element.DateInstant
-import com.kunzisoft.keepass.database.element.DeletedObject
+import com.kunzisoft.keepass.database.element.*
 import com.kunzisoft.keepass.database.element.binary.BinaryData
 import com.kunzisoft.keepass.database.element.binary.LoadedKey
 import com.kunzisoft.keepass.database.element.database.CompressionAlgorithm
@@ -42,7 +40,7 @@ import com.kunzisoft.keepass.database.element.node.NodeKDBXInterface
 import com.kunzisoft.keepass.database.element.security.ProtectedString
 import com.kunzisoft.keepass.database.exception.*
 import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_4
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_40
 import com.kunzisoft.keepass.database.file.DatabaseKDBXXML
 import com.kunzisoft.keepass.database.file.DateKDBXUtil
 import com.kunzisoft.keepass.stream.HashedBlockInputStream
@@ -88,9 +86,12 @@ class DatabaseInputKDBX(cacheDirectory: File,
     private var ctxHistoryBase: EntryKDBX? = null
     private var ctxDeletedObject: DeletedObject? = null
     private var customIconID = DatabaseVersioned.UUID_ZERO
+    private var customIconName: String = ""
+    private var customIconLastModificationTime: DateInstant? = null
     private var customIconData: ByteArray? = null
     private var customDataKey: String? = null
     private var customDataValue: String? = null
+    private var customDataLastModificationTime: DateInstant? = null
     private var groupCustomDataKey: String? = null
     private var groupCustomDataValue: String? = null
     private var entryCustomDataKey: String? = null
@@ -151,15 +152,17 @@ class DatabaseInputKDBX(cacheDirectory: File,
             val cipher: Cipher
             try {
                 engine = EncryptionAlgorithm.getFrom(mDatabase.cipherUuid).cipherEngine
+                engine.forcePaddingCompatibility = true
                 mDatabase.setDataEngine(engine)
                 mDatabase.encryptionAlgorithm = engine.getEncryptionAlgorithm()
                 cipher = engine.getCipher(Cipher.DECRYPT_MODE, mDatabase.finalKey!!, header.encryptionIV)
+                engine.forcePaddingCompatibility = false
             } catch (e: Exception) {
                 throw InvalidAlgorithmDatabaseException(e)
             }
 
             val plainInputStream: InputStream
-            if (mDatabase.kdbxVersion.isBefore(FILE_VERSION_32_4)) {
+            if (mDatabase.kdbxVersion.isBefore(FILE_VERSION_40)) {
 
                 val dataDecrypted = CipherInputStream(databaseInputStream, cipher)
                 val storedStartBytes: ByteArray?
@@ -208,7 +211,7 @@ class DatabaseInputKDBX(cacheDirectory: File,
                 else -> plainInputStream
             }
 
-            if (!mDatabase.kdbxVersion.isBefore(FILE_VERSION_32_4)) {
+            if (!mDatabase.kdbxVersion.isBefore(FILE_VERSION_40)) {
                 readInnerHeader(inputStreamXml, header)
             }
 
@@ -384,25 +387,25 @@ class DatabaseInputKDBX(cacheDirectory: File,
                     }
                 }
             } else if (name.equals(DatabaseKDBXXML.ElemSettingsChanged, ignoreCase = true)) {
-                mDatabase.settingsChanged = readPwTime(xpp)
+                mDatabase.settingsChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbName, ignoreCase = true)) {
                 mDatabase.name = readString(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbNameChanged, ignoreCase = true)) {
-                mDatabase.nameChanged = readPwTime(xpp)
+                mDatabase.nameChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbDesc, ignoreCase = true)) {
                 mDatabase.description = readString(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbDescChanged, ignoreCase = true)) {
-                mDatabase.descriptionChanged = readPwTime(xpp)
+                mDatabase.descriptionChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbDefaultUser, ignoreCase = true)) {
                 mDatabase.defaultUserName = readString(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbDefaultUserChanged, ignoreCase = true)) {
-                mDatabase.defaultUserNameChanged = readPwTime(xpp)
+                mDatabase.defaultUserNameChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbColor, ignoreCase = true)) {
                 mDatabase.color = readString(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbMntncHistoryDays, ignoreCase = true)) {
                 mDatabase.maintenanceHistoryDays = readUInt(xpp, DEFAULT_HISTORY_DAYS)
             } else if (name.equals(DatabaseKDBXXML.ElemDbKeyChanged, ignoreCase = true)) {
-                mDatabase.keyLastChanged = readPwTime(xpp)
+                mDatabase.keyLastChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDbKeyChangeRec, ignoreCase = true)) {
                 mDatabase.keyChangeRecDays = readLong(xpp, -1)
             } else if (name.equals(DatabaseKDBXXML.ElemDbKeyChangeForce, ignoreCase = true)) {
@@ -418,11 +421,11 @@ class DatabaseInputKDBX(cacheDirectory: File,
             } else if (name.equals(DatabaseKDBXXML.ElemRecycleBinUuid, ignoreCase = true)) {
                 mDatabase.recycleBinUUID = readUuid(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemRecycleBinChanged, ignoreCase = true)) {
-                mDatabase.recycleBinChanged = readTime(xpp)
+                mDatabase.recycleBinChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemEntryTemplatesGroup, ignoreCase = true)) {
                 mDatabase.entryTemplatesGroup = readUuid(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemEntryTemplatesGroupChanged, ignoreCase = true)) {
-                mDatabase.entryTemplatesGroupChanged = readPwTime(xpp)
+                mDatabase.entryTemplatesGroupChanged = readDateInstant(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemHistoryMaxItems, ignoreCase = true)) {
                 mDatabase.historyMaxItems = readInt(xpp, -1)
             } else if (name.equals(DatabaseKDBXXML.ElemHistoryMaxSize, ignoreCase = true)) {
@@ -466,6 +469,10 @@ class DatabaseInputKDBX(cacheDirectory: File,
                 if (strData.isNotEmpty()) {
                     customIconData = Base64.decode(strData, BASE_64_FLAG)
                 }
+            } else if (name.equals(DatabaseKDBXXML.ElemName, ignoreCase = true)) {
+                customIconName = readString(xpp)
+            } else if (name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true)) {
+                customIconLastModificationTime = readDateInstant(xpp)
             } else {
                 readUnknown(xpp)
             }
@@ -486,6 +493,8 @@ class DatabaseInputKDBX(cacheDirectory: File,
                 customDataKey = readString(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemValue, ignoreCase = true)) {
                 customDataValue = readString(xpp)
+            } else if (name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true)) {
+                customDataLastModificationTime = readDateInstant(xpp)
             } else {
                 readUnknown(xpp)
             }
@@ -516,6 +525,10 @@ class DatabaseInputKDBX(cacheDirectory: File,
                 ctxGroup?.icon?.standard = mDatabase.getStandardIcon(readUInt(xpp, UnsignedInt(0)).toKotlinInt())
             } else if (name.equals(DatabaseKDBXXML.ElemCustomIconID, ignoreCase = true)) {
                 ctxGroup?.icon?.custom = mDatabase.getCustomIcon(readUuid(xpp))
+            } else if (name.equals(DatabaseKDBXXML.ElemTags, ignoreCase = true)) {
+                ctxGroup?.tags = readTags(xpp)
+            } else if (name.equals(DatabaseKDBXXML.ElemPreviousParentGroup, ignoreCase = true)) {
+                ctxGroup?.previousParentGroup = readUuid(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemTimes, ignoreCase = true)) {
                 return switchContext(ctx, KdbContext.GroupTimes, xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemIsExpanded, ignoreCase = true)) {
@@ -560,6 +573,7 @@ class DatabaseInputKDBX(cacheDirectory: File,
             KdbContext.GroupCustomDataItem -> when {
                 name.equals(DatabaseKDBXXML.ElemKey, ignoreCase = true) -> groupCustomDataKey = readString(xpp)
                 name.equals(DatabaseKDBXXML.ElemValue, ignoreCase = true) -> groupCustomDataValue = readString(xpp)
+                name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> readDateInstant(xpp) // Ignore
                 else -> readUnknown(xpp)
             }
 
@@ -576,8 +590,12 @@ class DatabaseInputKDBX(cacheDirectory: File,
                 ctxEntry?.backgroundColor = readString(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemOverrideUrl, ignoreCase = true)) {
                 ctxEntry?.overrideURL = readString(xpp)
+            } else if (name.equals(DatabaseKDBXXML.ElemQualityCheck, ignoreCase = true)) {
+                ctxEntry?.qualityCheck = readBool(xpp, true)
             } else if (name.equals(DatabaseKDBXXML.ElemTags, ignoreCase = true)) {
-                ctxEntry?.tags = readString(xpp)
+                ctxEntry?.tags = readTags(xpp)
+            } else if (name.equals(DatabaseKDBXXML.ElemPreviousParentGroup, ignoreCase = true)) {
+                ctxEntry?.previousParentGroup = readUuid(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemTimes, ignoreCase = true)) {
                 return switchContext(ctx, KdbContext.EntryTimes, xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemString, ignoreCase = true)) {
@@ -606,6 +624,7 @@ class DatabaseInputKDBX(cacheDirectory: File,
             KdbContext.EntryCustomDataItem -> when {
                 name.equals(DatabaseKDBXXML.ElemKey, ignoreCase = true) -> entryCustomDataKey = readString(xpp)
                 name.equals(DatabaseKDBXXML.ElemValue, ignoreCase = true) -> entryCustomDataValue = readString(xpp)
+                name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> readDateInstant(xpp) // Ignore
                 else -> readUnknown(xpp)
             }
 
@@ -618,13 +637,13 @@ class DatabaseInputKDBX(cacheDirectory: File,
                         }
 
                 when {
-                    name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> tl?.lastModificationTime = readPwTime(xpp)
-                    name.equals(DatabaseKDBXXML.ElemCreationTime, ignoreCase = true) -> tl?.creationTime = readPwTime(xpp)
-                    name.equals(DatabaseKDBXXML.ElemLastAccessTime, ignoreCase = true) -> tl?.lastAccessTime = readPwTime(xpp)
-                    name.equals(DatabaseKDBXXML.ElemExpiryTime, ignoreCase = true) -> tl?.expiryTime = readPwTime(xpp)
+                    name.equals(DatabaseKDBXXML.ElemLastModTime, ignoreCase = true) -> tl?.lastModificationTime = readDateInstant(xpp)
+                    name.equals(DatabaseKDBXXML.ElemCreationTime, ignoreCase = true) -> tl?.creationTime = readDateInstant(xpp)
+                    name.equals(DatabaseKDBXXML.ElemLastAccessTime, ignoreCase = true) -> tl?.lastAccessTime = readDateInstant(xpp)
+                    name.equals(DatabaseKDBXXML.ElemExpiryTime, ignoreCase = true) -> tl?.expiryTime = readDateInstant(xpp)
                     name.equals(DatabaseKDBXXML.ElemExpires, ignoreCase = true) -> tl?.expires = readBool(xpp, false)
                     name.equals(DatabaseKDBXXML.ElemUsageCount, ignoreCase = true) -> tl?.usageCount = readULong(xpp, UnsignedLong(0))
-                    name.equals(DatabaseKDBXXML.ElemLocationChanged, ignoreCase = true) -> tl?.locationChanged = readPwTime(xpp)
+                    name.equals(DatabaseKDBXXML.ElemLocationChanged, ignoreCase = true) -> tl?.locationChanged = readDateInstant(xpp)
                     else -> readUnknown(xpp)
                 }
             }
@@ -685,7 +704,7 @@ class DatabaseInputKDBX(cacheDirectory: File,
             KdbContext.DeletedObject -> if (name.equals(DatabaseKDBXXML.ElemUuid, ignoreCase = true)) {
                 ctxDeletedObject?.uuid = readUuid(xpp)
             } else if (name.equals(DatabaseKDBXXML.ElemDeletionTime, ignoreCase = true)) {
-                ctxDeletedObject?.setDeletionTime(readTime(xpp))
+                ctxDeletedObject?.setDeletionTime(readDateInstant(xpp))
             } else {
                 readUnknown(xpp)
             }
@@ -712,29 +731,34 @@ class DatabaseInputKDBX(cacheDirectory: File,
         } else if (ctx == KdbContext.CustomIcon && name.equals(DatabaseKDBXXML.ElemCustomIconItem, ignoreCase = true)) {
             val iconData = customIconData
             if (customIconID != DatabaseVersioned.UUID_ZERO && iconData != null) {
-                mDatabase.addCustomIcon(customIconID, isRAMSufficient.invoke(iconData.size.toLong())) { _, binary ->
+                mDatabase.addCustomIcon(customIconID,
+                        customIconName,
+                        customIconLastModificationTime,
+                        isRAMSufficient.invoke(iconData.size.toLong())) { _, binary ->
                     binary?.getOutputDataStream(mDatabase.binaryCache)?.use { outputStream ->
                         outputStream.write(iconData)
                     }
                 }
             }
-
             customIconID = DatabaseVersioned.UUID_ZERO
+            customIconName = ""
+            customIconLastModificationTime = null
             customIconData = null
-
             return KdbContext.CustomIcons
         } else if (ctx == KdbContext.Binaries && name.equals(DatabaseKDBXXML.ElemBinaries, ignoreCase = true)) {
             return KdbContext.Meta
         } else if (ctx == KdbContext.CustomData && name.equals(DatabaseKDBXXML.ElemCustomData, ignoreCase = true)) {
             return KdbContext.Meta
         } else if (ctx == KdbContext.CustomDataItem && name.equals(DatabaseKDBXXML.ElemStringDictExItem, ignoreCase = true)) {
-            if (customDataKey != null && customDataValue != null) {
-                mDatabase.putCustomData(customDataKey!!, customDataValue!!)
+            customDataKey?.let { dataKey ->
+                customDataValue?.let { dataValue ->
+                    mDatabase.customData.put(CustomDataItem(dataKey,
+                            dataValue, customDataLastModificationTime))
+                }
             }
-
             customDataKey = null
             customDataValue = null
-
+            customDataLastModificationTime = null
             return KdbContext.CustomData
         } else if (ctx == KdbContext.Group && name.equals(DatabaseKDBXXML.ElemGroup, ignoreCase = true)) {
             if (ctxGroup != null && ctxGroup?.id == DatabaseVersioned.UUID_ZERO) {
@@ -756,13 +780,13 @@ class DatabaseInputKDBX(cacheDirectory: File,
         } else if (ctx == KdbContext.GroupCustomData && name.equals(DatabaseKDBXXML.ElemCustomData, ignoreCase = true)) {
             return KdbContext.Group
         } else if (ctx == KdbContext.GroupCustomDataItem && name.equals(DatabaseKDBXXML.ElemStringDictExItem, ignoreCase = true)) {
-            if (groupCustomDataKey != null && groupCustomDataValue != null) {
-                ctxGroup?.putCustomData(groupCustomDataKey!!, groupCustomDataValue!!)
+            groupCustomDataKey?.let { customDataKey ->
+                groupCustomDataValue?.let { customDataValue ->
+                    ctxGroup?.customData?.put(CustomDataItem(customDataKey, customDataValue))
+                }
             }
-
             groupCustomDataKey = null
             groupCustomDataValue = null
-
             return KdbContext.GroupCustomData
 
         } else if (ctx == KdbContext.Entry && name.equals(DatabaseKDBXXML.ElemEntry, ignoreCase = true)) {
@@ -808,13 +832,13 @@ class DatabaseInputKDBX(cacheDirectory: File,
         } else if (ctx == KdbContext.EntryCustomData && name.equals(DatabaseKDBXXML.ElemCustomData, ignoreCase = true)) {
             return KdbContext.Entry
         } else if (ctx == KdbContext.EntryCustomDataItem && name.equals(DatabaseKDBXXML.ElemStringDictExItem, ignoreCase = true)) {
-            if (entryCustomDataKey != null && entryCustomDataValue != null) {
-                ctxEntry?.putCustomData(entryCustomDataKey!!, entryCustomDataValue!!)
+            entryCustomDataKey?.let { customDataKey ->
+                entryCustomDataValue?.let { customDataValue ->
+                    ctxEntry?.customData?.put(CustomDataItem(customDataKey, customDataValue))
+                }
             }
-
             entryCustomDataKey = null
             entryCustomDataValue = null
-
             return KdbContext.EntryCustomData
         } else if (ctx == KdbContext.EntryHistory && name.equals(DatabaseKDBXXML.ElemHistory, ignoreCase = true)) {
             entryInHistory = false
@@ -834,16 +858,11 @@ class DatabaseInputKDBX(cacheDirectory: File,
     }
 
     @Throws(IOException::class, XmlPullParserException::class)
-    private fun readPwTime(xpp: XmlPullParser): DateInstant {
-        return DateInstant(readTime(xpp))
-    }
-
-    @Throws(IOException::class, XmlPullParserException::class)
-    private fun readTime(xpp: XmlPullParser): Date {
+    private fun readDateInstant(xpp: XmlPullParser): DateInstant {
         val sDate = readString(xpp)
         var utcDate: Date? = null
 
-        if (mDatabase.kdbxVersion.isBefore(FILE_VERSION_32_4)) {
+        if (mDatabase.kdbxVersion.isBefore(FILE_VERSION_40)) {
             try {
                 utcDate = DatabaseKDBXXML.DateFormatter.parse(sDate)
             } catch (e: ParseException) {
@@ -861,7 +880,12 @@ class DatabaseInputKDBX(cacheDirectory: File,
             utcDate = DateKDBXUtil.convertKDBX4Time(seconds)
         }
 
-        return utcDate ?: Date(0L)
+        return DateInstant(utcDate ?: Date(0L))
+    }
+
+    @Throws(IOException::class, XmlPullParserException::class)
+    private fun readTags(xpp: XmlPullParser): Tags {
+        return Tags(readString(xpp))
     }
 
     @Throws(XmlPullParserException::class, IOException::class)

app/src/main/java/com/kunzisoft/keepass/database/file/output/DatabaseHeaderOutputKDBX.kt

@@ -27,7 +27,7 @@ import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
 import com.kunzisoft.keepass.database.exception.DatabaseOutputException
 import com.kunzisoft.keepass.database.file.DatabaseHeader
 import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_4
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_40
 import com.kunzisoft.keepass.stream.MacOutputStream
 import com.kunzisoft.keepass.utils.*
 import java.io.ByteArrayOutputStream
@@ -76,7 +76,7 @@ constructor(private val databaseKDBX: DatabaseKDBX,
         writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.CompressionFlags, uIntTo4Bytes(DatabaseHeaderKDBX.getFlagFromCompression(databaseKDBX.compressionAlgorithm)))
         writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.MasterSeed, header.masterSeed)
 
-        if (header.version.isBefore(FILE_VERSION_32_4)) {
+        if (header.version.isBefore(FILE_VERSION_40)) {
             writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.TransformSeed, header.transformSeed)
             writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.TransformRounds, longTo8Bytes(databaseKDBX.numberKeyEncryptionRounds))
         } else {
@@ -87,7 +87,7 @@ constructor(private val databaseKDBX: DatabaseKDBX,
             writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.EncryptionIV, header.encryptionIV)
         }
 
-        if (header.version.isBefore(FILE_VERSION_32_4)) {
+        if (header.version.isBefore(FILE_VERSION_40)) {
             writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.InnerRandomstreamKey, header.innerRandomStreamKey)
             writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.StreamStartBytes, header.streamStartBytes)
             writeHeaderField(DatabaseHeaderKDBX.PwDbHeaderV4Fields.InnerRandomStreamID, uIntTo4Bytes(header.innerRandomStream!!.id))
@@ -121,7 +121,7 @@ constructor(private val databaseKDBX: DatabaseKDBX,
 
     @Throws(IOException::class)
     private fun writeHeaderFieldSize(size: Int) {
-        if (header.version.isBefore(FILE_VERSION_32_4)) {
+        if (header.version.isBefore(FILE_VERSION_40)) {
             mos.write2BytesUShort(size)
         } else {
             mos.write4BytesUInt(UnsignedInt(size))

app/src/main/java/com/kunzisoft/keepass/database/file/output/DatabaseOutputKDB.kt

@@ -20,15 +20,15 @@
 package com.kunzisoft.keepass.database.file.output
 
 import com.kunzisoft.encrypt.HashManager
-import com.kunzisoft.keepass.utils.UnsignedInt
-import com.kunzisoft.keepass.utils.write2BytesUShort
-import com.kunzisoft.keepass.utils.write4BytesUInt
 import com.kunzisoft.keepass.database.crypto.EncryptionAlgorithm
 import com.kunzisoft.keepass.database.element.database.DatabaseKDB
 import com.kunzisoft.keepass.database.element.group.GroupKDB
 import com.kunzisoft.keepass.database.exception.DatabaseOutputException
 import com.kunzisoft.keepass.database.file.DatabaseHeader
 import com.kunzisoft.keepass.database.file.DatabaseHeaderKDB
+import com.kunzisoft.keepass.utils.UnsignedInt
+import com.kunzisoft.keepass.utils.write2BytesUShort
+import com.kunzisoft.keepass.utils.write4BytesUInt
 import java.io.BufferedOutputStream
 import java.io.ByteArrayOutputStream
 import java.io.IOException
@@ -59,6 +59,8 @@ class DatabaseOutputKDB(private val mDatabaseKDB: DatabaseKDB,
     override fun output() {
         // Before we output the header, we should sort our list of groups
         // and remove any orphaned nodes that are no longer part of the tree hierarchy
+        // also remove the virtual root not present in kdb
+        val rootGroup = mDatabaseKDB.rootGroup
         sortGroupsForOutput()
 
         val header = outputHeader(mOutputStream)
@@ -86,8 +88,10 @@ class DatabaseOutputKDB(private val mDatabaseKDB: DatabaseKDB,
             throw DatabaseOutputException("Invalid algorithm parameter.", e)
         } catch (e: IOException) {
             throw DatabaseOutputException("Failed to output final encrypted part.", e)
+        } finally {
+            // Add again the virtual root group for better management
+            mDatabaseKDB.rootGroup = rootGroup
         }
-
     }
 
     @Throws(DatabaseOutputException::class)
@@ -201,7 +205,7 @@ class DatabaseOutputKDB(private val mDatabaseKDB: DatabaseKDB,
 
     private fun sortGroupsForOutput() {
         val groupList = ArrayList<GroupKDB>()
-        // Rebuild list according to coalation sorting order removing any orphaned groups
+        // Rebuild list according to sorting order removing any orphaned groups
         for (rootGroup in mDatabaseKDB.rootGroups) {
             sortGroup(rootGroup, groupList)
         }

app/src/main/java/com/kunzisoft/keepass/database/file/output/DatabaseOutputKDBX.kt

@@ -23,15 +23,16 @@ import android.util.Base64
 import android.util.Log
 import android.util.Xml
 import com.kunzisoft.encrypt.StreamCipher
-import com.kunzisoft.keepass.database.crypto.CrsAlgorithm
 import com.kunzisoft.keepass.database.action.node.NodeHandler
 import com.kunzisoft.keepass.database.crypto.CipherEngine
+import com.kunzisoft.keepass.database.crypto.CrsAlgorithm
 import com.kunzisoft.keepass.database.crypto.EncryptionAlgorithm
 import com.kunzisoft.keepass.database.crypto.kdf.KdfFactory
-import com.kunzisoft.keepass.database.element.DeletedObject
+import com.kunzisoft.keepass.database.element.*
 import com.kunzisoft.keepass.database.element.database.CompressionAlgorithm
 import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
 import com.kunzisoft.keepass.database.element.database.DatabaseKDBX.Companion.BASE_64_FLAG
+import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import com.kunzisoft.keepass.database.element.entry.AutoType
 import com.kunzisoft.keepass.database.element.entry.EntryKDBX
 import com.kunzisoft.keepass.database.element.group.GroupKDBX
@@ -41,7 +42,8 @@ import com.kunzisoft.keepass.database.element.security.ProtectedString
 import com.kunzisoft.keepass.database.exception.DatabaseOutputException
 import com.kunzisoft.keepass.database.exception.UnknownKDF
 import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_4
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_40
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_41
 import com.kunzisoft.keepass.database.file.DatabaseKDBXXML
 import com.kunzisoft.keepass.database.file.DateKDBXUtil
 import com.kunzisoft.keepass.stream.HashedBlockOutputStream
@@ -83,7 +85,7 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
 
             header = outputHeader(mOutputStream)
 
-            val osPlain: OutputStream = if (header!!.version.isBefore(FILE_VERSION_32_4)) {
+            val osPlain: OutputStream = if (header!!.version.isBefore(FILE_VERSION_40)) {
                 val cos = attachStreamEncryptor(header!!, mOutputStream)
                 cos.write(header!!.streamStartBytes)
 
@@ -102,7 +104,7 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
                     else -> osPlain
                 }
 
-                if (!header!!.version.isBefore(FILE_VERSION_32_4)) {
+                if (!header!!.version.isBefore(FILE_VERSION_40)) {
                     outputInnerHeader(mDatabaseKDBX, header!!, xmlOutputStream)
                 }
 
@@ -234,40 +236,40 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
     private fun writeMeta() {
         xml.startTag(null, DatabaseKDBXXML.ElemMeta)
 
-        writeObject(DatabaseKDBXXML.ElemGenerator, mDatabaseKDBX.localizedAppName)
+        writeString(DatabaseKDBXXML.ElemGenerator, mDatabaseKDBX.localizedAppName)
 
         if (hashOfHeader != null) {
-            writeObject(DatabaseKDBXXML.ElemHeaderHash, String(Base64.encode(hashOfHeader!!, BASE_64_FLAG)))
+            writeString(DatabaseKDBXXML.ElemHeaderHash, String(Base64.encode(hashOfHeader!!, BASE_64_FLAG)))
         }
 
-        writeObject(DatabaseKDBXXML.ElemDbName, mDatabaseKDBX.name, true)
-        writeObject(DatabaseKDBXXML.ElemDbNameChanged, mDatabaseKDBX.nameChanged.date)
-        writeObject(DatabaseKDBXXML.ElemDbDesc, mDatabaseKDBX.description, true)
-        writeObject(DatabaseKDBXXML.ElemDbDescChanged, mDatabaseKDBX.descriptionChanged.date)
-        writeObject(DatabaseKDBXXML.ElemDbDefaultUser, mDatabaseKDBX.defaultUserName, true)
-        writeObject(DatabaseKDBXXML.ElemDbDefaultUserChanged, mDatabaseKDBX.defaultUserNameChanged.date)
-        writeObject(DatabaseKDBXXML.ElemDbMntncHistoryDays, mDatabaseKDBX.maintenanceHistoryDays.toKotlinLong())
-        writeObject(DatabaseKDBXXML.ElemDbColor, mDatabaseKDBX.color)
-        writeObject(DatabaseKDBXXML.ElemDbKeyChanged, mDatabaseKDBX.keyLastChanged.date)
-        writeObject(DatabaseKDBXXML.ElemDbKeyChangeRec, mDatabaseKDBX.keyChangeRecDays)
-        writeObject(DatabaseKDBXXML.ElemDbKeyChangeForce, mDatabaseKDBX.keyChangeForceDays)
+        writeString(DatabaseKDBXXML.ElemDbName, mDatabaseKDBX.name, true)
+        writeDateInstant(DatabaseKDBXXML.ElemDbNameChanged, mDatabaseKDBX.nameChanged)
+        writeString(DatabaseKDBXXML.ElemDbDesc, mDatabaseKDBX.description, true)
+        writeDateInstant(DatabaseKDBXXML.ElemDbDescChanged, mDatabaseKDBX.descriptionChanged)
+        writeString(DatabaseKDBXXML.ElemDbDefaultUser, mDatabaseKDBX.defaultUserName, true)
+        writeDateInstant(DatabaseKDBXXML.ElemDbDefaultUserChanged, mDatabaseKDBX.defaultUserNameChanged)
+        writeLong(DatabaseKDBXXML.ElemDbMntncHistoryDays, mDatabaseKDBX.maintenanceHistoryDays.toKotlinLong())
+        writeString(DatabaseKDBXXML.ElemDbColor, mDatabaseKDBX.color)
+        writeDateInstant(DatabaseKDBXXML.ElemDbKeyChanged, mDatabaseKDBX.keyLastChanged)
+        writeLong(DatabaseKDBXXML.ElemDbKeyChangeRec, mDatabaseKDBX.keyChangeRecDays)
+        writeLong(DatabaseKDBXXML.ElemDbKeyChangeForce, mDatabaseKDBX.keyChangeForceDays)
 
         writeMemoryProtection(mDatabaseKDBX.memoryProtection)
 
         writeCustomIconList()
 
-        writeObject(DatabaseKDBXXML.ElemRecycleBinEnabled, mDatabaseKDBX.isRecycleBinEnabled)
+        writeBoolean(DatabaseKDBXXML.ElemRecycleBinEnabled, mDatabaseKDBX.isRecycleBinEnabled)
         writeUuid(DatabaseKDBXXML.ElemRecycleBinUuid, mDatabaseKDBX.recycleBinUUID)
-        writeObject(DatabaseKDBXXML.ElemRecycleBinChanged, mDatabaseKDBX.recycleBinChanged)
+        writeDateInstant(DatabaseKDBXXML.ElemRecycleBinChanged, mDatabaseKDBX.recycleBinChanged)
         writeUuid(DatabaseKDBXXML.ElemEntryTemplatesGroup, mDatabaseKDBX.entryTemplatesGroup)
-        writeObject(DatabaseKDBXXML.ElemEntryTemplatesGroupChanged, mDatabaseKDBX.entryTemplatesGroupChanged.date)
-        writeObject(DatabaseKDBXXML.ElemHistoryMaxItems, mDatabaseKDBX.historyMaxItems.toLong())
-        writeObject(DatabaseKDBXXML.ElemHistoryMaxSize, mDatabaseKDBX.historyMaxSize)
+        writeDateInstant(DatabaseKDBXXML.ElemEntryTemplatesGroupChanged, mDatabaseKDBX.entryTemplatesGroupChanged)
+        writeLong(DatabaseKDBXXML.ElemHistoryMaxItems, mDatabaseKDBX.historyMaxItems.toLong())
+        writeLong(DatabaseKDBXXML.ElemHistoryMaxSize, mDatabaseKDBX.historyMaxSize)
         writeUuid(DatabaseKDBXXML.ElemLastSelectedGroup, mDatabaseKDBX.lastSelectedGroupUUID)
         writeUuid(DatabaseKDBXXML.ElemLastTopVisibleGroup, mDatabaseKDBX.lastTopVisibleGroupUUID)
 
         // Seem to work properly if always in meta
-        if (header!!.version.isBefore(FILE_VERSION_32_4))
+        if (header!!.version.isBefore(FILE_VERSION_40))
             writeMetaBinaries()
 
         writeCustomData(mDatabaseKDBX.customData)
@@ -309,7 +311,7 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
             Log.e(TAG, "Unable to retrieve header", unknownKDF)
         }
 
-        if (header.version.isBefore(FILE_VERSION_32_4)) {
+        if (header.version.isBefore(FILE_VERSION_40)) {
             header.innerRandomStream = CrsAlgorithm.Salsa20
             header.innerRandomStreamKey = ByteArray(32)
         } else {
@@ -324,7 +326,7 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
             throw DatabaseOutputException(e)
         }
 
-        if (header.version.isBefore(FILE_VERSION_32_4)) {
+        if (header.version.isBefore(FILE_VERSION_40)) {
             random.nextBytes(header.streamStartBytes)
         }
 
@@ -353,19 +355,21 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
     private fun startGroup(group: GroupKDBX) {
         xml.startTag(null, DatabaseKDBXXML.ElemGroup)
         writeUuid(DatabaseKDBXXML.ElemUuid, group.id)
-        writeObject(DatabaseKDBXXML.ElemName, group.title)
-        writeObject(DatabaseKDBXXML.ElemNotes, group.notes)
-        writeObject(DatabaseKDBXXML.ElemIcon, group.icon.standard.id.toLong())
+        writeString(DatabaseKDBXXML.ElemName, group.title)
+        writeString(DatabaseKDBXXML.ElemNotes, group.notes)
+        writeLong(DatabaseKDBXXML.ElemIcon, group.icon.standard.id.toLong())
 
         if (!group.icon.custom.isUnknown) {
             writeUuid(DatabaseKDBXXML.ElemCustomIconID, group.icon.custom.uuid)
         }
 
+        writeTags(group.tags)
+        writePreviousParentGroup(group.previousParentGroup)
         writeTimes(group)
-        writeObject(DatabaseKDBXXML.ElemIsExpanded, group.isExpanded)
-        writeObject(DatabaseKDBXXML.ElemGroupDefaultAutoTypeSeq, group.defaultAutoTypeSequence)
-        writeObject(DatabaseKDBXXML.ElemEnableAutoType, group.enableAutoType)
-        writeObject(DatabaseKDBXXML.ElemEnableSearching, group.enableSearching)
+        writeBoolean(DatabaseKDBXXML.ElemIsExpanded, group.isExpanded)
+        writeString(DatabaseKDBXXML.ElemGroupDefaultAutoTypeSeq, group.defaultAutoTypeSequence)
+        writeBoolean(DatabaseKDBXXML.ElemEnableAutoType, group.enableAutoType)
+        writeBoolean(DatabaseKDBXXML.ElemEnableSearching, group.enableSearching)
         writeUuid(DatabaseKDBXXML.ElemLastTopVisibleEntry, group.lastTopVisibleEntry)
     }
 
@@ -380,24 +384,26 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
         xml.startTag(null, DatabaseKDBXXML.ElemEntry)
 
         writeUuid(DatabaseKDBXXML.ElemUuid, entry.id)
-        writeObject(DatabaseKDBXXML.ElemIcon, entry.icon.standard.id.toLong())
+        writeLong(DatabaseKDBXXML.ElemIcon, entry.icon.standard.id.toLong())
 
         if (!entry.icon.custom.isUnknown) {
             writeUuid(DatabaseKDBXXML.ElemCustomIconID, entry.icon.custom.uuid)
         }
 
-        writeObject(DatabaseKDBXXML.ElemFgColor, entry.foregroundColor)
-        writeObject(DatabaseKDBXXML.ElemBgColor, entry.backgroundColor)
-        writeObject(DatabaseKDBXXML.ElemOverrideUrl, entry.overrideURL)
-        writeObject(DatabaseKDBXXML.ElemTags, entry.tags)
+        writeString(DatabaseKDBXXML.ElemFgColor, entry.foregroundColor)
+        writeString(DatabaseKDBXXML.ElemBgColor, entry.backgroundColor)
+        writeString(DatabaseKDBXXML.ElemOverrideUrl, entry.overrideURL)
 
+        // Write quality check only if false
+        if (!entry.qualityCheck) {
+            writeBoolean(DatabaseKDBXXML.ElemQualityCheck, entry.qualityCheck)
+        }
+        writeTags(entry.tags)
+        writePreviousParentGroup(entry.previousParentGroup)
         writeTimes(entry)
-
         writeFields(entry.fields)
         writeEntryBinaries(entry.binaries)
-        if (entry.containsCustomData()) {
-            writeCustomData(entry.customData)
-        }
+        writeCustomData(entry.customData)
         writeAutoType(entry.autoType)
 
         if (!isHistory) {
@@ -408,7 +414,7 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
-    private fun writeObject(name: String, value: String, filterXmlChars: Boolean = false) {
+    private fun writeString(name: String, value: String, filterXmlChars: Boolean = false) {
         var xmlString = value
 
         xml.startTag(null, name)
@@ -422,38 +428,37 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
-    private fun writeObject(name: String, value: Date) {
-        if (header!!.version.isBefore(FILE_VERSION_32_4)) {
-            writeObject(name, DatabaseKDBXXML.DateFormatter.format(value))
+    private fun writeDateInstant(name: String, value: DateInstant) {
+        val date = value.date
+        if (header!!.version.isBefore(FILE_VERSION_40)) {
+            writeString(name, DatabaseKDBXXML.DateFormatter.format(date))
         } else {
-            val dt = DateTime(value)
-            val seconds = DateKDBXUtil.convertDateToKDBX4Time(dt)
-            val buf = longTo8Bytes(seconds)
+            val buf = longTo8Bytes(DateKDBXUtil.convertDateToKDBX4Time(DateTime(date)))
             val b64 = String(Base64.encode(buf, BASE_64_FLAG))
-            writeObject(name, b64)
+            writeString(name, b64)
         }
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
-    private fun writeObject(name: String, value: Long) {
-        writeObject(name, value.toString())
+    private fun writeLong(name: String, value: Long) {
+        writeString(name, value.toString())
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
-    private fun writeObject(name: String, value: Boolean?) {
+    private fun writeBoolean(name: String, value: Boolean?) {
         val text: String = when {
             value == null -> DatabaseKDBXXML.ValNull
             value -> DatabaseKDBXXML.ValTrue
             else -> DatabaseKDBXXML.ValFalse
         }
 
-        writeObject(name, text)
+        writeString(name, text)
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
     private fun writeUuid(name: String, uuid: UUID) {
         val data = uuidTo16Bytes(uuid)
-        writeObject(name, String(Base64.encode(data, BASE_64_FLAG)))
+        writeString(name, String(Base64.encode(data, BASE_64_FLAG)))
     }
 
     /*
@@ -514,34 +519,29 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
         xml.endTag(null, DatabaseKDBXXML.ElemBinaries)
     }
 
-    @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
-    private fun writeObject(name: String, keyName: String, keyValue: String, valueName: String, valueValue: String) {
-        xml.startTag(null, name)
-
-        xml.startTag(null, keyName)
-        xml.text(safeXmlString(keyValue))
-        xml.endTag(null, keyName)
-
-        xml.startTag(null, valueName)
-        xml.text(safeXmlString(valueValue))
-        xml.endTag(null, valueName)
-
-        xml.endTag(null, name)
-    }
-
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
     private fun writeAutoType(autoType: AutoType) {
         xml.startTag(null, DatabaseKDBXXML.ElemAutoType)
 
-        writeObject(DatabaseKDBXXML.ElemAutoTypeEnabled, autoType.enabled)
-        writeObject(DatabaseKDBXXML.ElemAutoTypeObfuscation, autoType.obfuscationOptions.toKotlinLong())
+        writeBoolean(DatabaseKDBXXML.ElemAutoTypeEnabled, autoType.enabled)
+        writeLong(DatabaseKDBXXML.ElemAutoTypeObfuscation, autoType.obfuscationOptions.toKotlinLong())
 
         if (autoType.defaultSequence.isNotEmpty()) {
-            writeObject(DatabaseKDBXXML.ElemAutoTypeDefaultSeq, autoType.defaultSequence, true)
+            writeString(DatabaseKDBXXML.ElemAutoTypeDefaultSeq, autoType.defaultSequence, true)
         }
 
         for ((key, value) in autoType.entrySet()) {
-            writeObject(DatabaseKDBXXML.ElemAutoTypeItem, DatabaseKDBXXML.ElemWindow, key, DatabaseKDBXXML.ElemKeystrokeSequence, value)
+            xml.startTag(null, DatabaseKDBXXML.ElemAutoTypeItem)
+
+            xml.startTag(null, DatabaseKDBXXML.ElemWindow)
+            xml.text(safeXmlString(key))
+            xml.endTag(null, DatabaseKDBXXML.ElemWindow)
+
+            xml.startTag(null, DatabaseKDBXXML.ElemKeystrokeSequence)
+            xml.text(safeXmlString(value))
+            xml.endTag(null, DatabaseKDBXXML.ElemKeystrokeSequence)
+
+            xml.endTag(null, DatabaseKDBXXML.ElemAutoTypeItem)
         }
 
         xml.endTag(null, DatabaseKDBXXML.ElemAutoType)
@@ -592,7 +592,7 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
         xml.startTag(null, DatabaseKDBXXML.ElemDeletedObject)
 
         writeUuid(DatabaseKDBXXML.ElemUuid, value.uuid)
-        writeObject(DatabaseKDBXXML.ElemDeletionTime, value.getDeletionTime())
+        writeDateInstant(DatabaseKDBXXML.ElemDeletionTime, value.getDeletionTime())
 
         xml.endTag(null, DatabaseKDBXXML.ElemDeletedObject)
     }
@@ -632,43 +632,72 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
     private fun writeMemoryProtection(value: MemoryProtectionConfig) {
         xml.startTag(null, DatabaseKDBXXML.ElemMemoryProt)
 
-        writeObject(DatabaseKDBXXML.ElemProtTitle, value.protectTitle)
-        writeObject(DatabaseKDBXXML.ElemProtUserName, value.protectUserName)
-        writeObject(DatabaseKDBXXML.ElemProtPassword, value.protectPassword)
-        writeObject(DatabaseKDBXXML.ElemProtURL, value.protectUrl)
-        writeObject(DatabaseKDBXXML.ElemProtNotes, value.protectNotes)
+        writeBoolean(DatabaseKDBXXML.ElemProtTitle, value.protectTitle)
+        writeBoolean(DatabaseKDBXXML.ElemProtUserName, value.protectUserName)
+        writeBoolean(DatabaseKDBXXML.ElemProtPassword, value.protectPassword)
+        writeBoolean(DatabaseKDBXXML.ElemProtURL, value.protectUrl)
+        writeBoolean(DatabaseKDBXXML.ElemProtNotes, value.protectNotes)
 
         xml.endTag(null, DatabaseKDBXXML.ElemMemoryProt)
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
-    private fun writeCustomData(customData: Map<String, String>) {
-        xml.startTag(null, DatabaseKDBXXML.ElemCustomData)
+    private fun writeCustomData(customData: CustomData) {
+        if (customData.isNotEmpty()) {
+            xml.startTag(null, DatabaseKDBXXML.ElemCustomData)
 
-        for ((key, value) in customData) {
-            writeObject(
-                    DatabaseKDBXXML.ElemStringDictExItem,
-                    DatabaseKDBXXML.ElemKey,
-                    key,
-                    DatabaseKDBXXML.ElemValue,
-                    value
-            )
+            customData.doForEachItems { customDataItem ->
+                writeCustomDataItem(customDataItem)
+            }
+
+            xml.endTag(null, DatabaseKDBXXML.ElemCustomData)
+        }
+    }
+
+    private fun writeCustomDataItem(customDataItem: CustomDataItem) {
+        xml.startTag(null, DatabaseKDBXXML.ElemStringDictExItem)
+
+        xml.startTag(null, DatabaseKDBXXML.ElemKey)
+        xml.text(safeXmlString(customDataItem.key))
+        xml.endTag(null, DatabaseKDBXXML.ElemKey)
+
+        xml.startTag(null, DatabaseKDBXXML.ElemValue)
+        xml.text(safeXmlString(customDataItem.value))
+        xml.endTag(null, DatabaseKDBXXML.ElemValue)
+
+        customDataItem.lastModificationTime?.let { lastModificationTime ->
+            writeDateInstant(DatabaseKDBXXML.ElemLastModTime, lastModificationTime)
         }
 
-        xml.endTag(null, DatabaseKDBXXML.ElemCustomData)
+        xml.endTag(null, DatabaseKDBXXML.ElemStringDictExItem)
+    }
+
+    @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
+    private fun writeTags(tags: Tags) {
+        if (!tags.isEmpty()) {
+            writeString(DatabaseKDBXXML.ElemTags, tags.toString())
+        }
+    }
+
+    @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
+    private fun writePreviousParentGroup(previousParentGroup: UUID) {
+        if (!header!!.version.isBefore(FILE_VERSION_41)
+                && previousParentGroup != DatabaseVersioned.UUID_ZERO) {
+            writeUuid(DatabaseKDBXXML.ElemPreviousParentGroup, previousParentGroup)
+        }
     }
 
     @Throws(IllegalArgumentException::class, IllegalStateException::class, IOException::class)
     private fun writeTimes(node: NodeKDBXInterface) {
         xml.startTag(null, DatabaseKDBXXML.ElemTimes)
 
-        writeObject(DatabaseKDBXXML.ElemLastModTime, node.lastModificationTime.date)
-        writeObject(DatabaseKDBXXML.ElemCreationTime, node.creationTime.date)
-        writeObject(DatabaseKDBXXML.ElemLastAccessTime, node.lastAccessTime.date)
-        writeObject(DatabaseKDBXXML.ElemExpiryTime, node.expiryTime.date)
-        writeObject(DatabaseKDBXXML.ElemExpires, node.expires)
-        writeObject(DatabaseKDBXXML.ElemUsageCount, node.usageCount.toKotlinLong())
-        writeObject(DatabaseKDBXXML.ElemLocationChanged, node.locationChanged.date)
+        writeDateInstant(DatabaseKDBXXML.ElemLastModTime, node.lastModificationTime)
+        writeDateInstant(DatabaseKDBXXML.ElemCreationTime, node.creationTime)
+        writeDateInstant(DatabaseKDBXXML.ElemLastAccessTime, node.lastAccessTime)
+        writeDateInstant(DatabaseKDBXXML.ElemExpiryTime, node.expiryTime)
+        writeBoolean(DatabaseKDBXXML.ElemExpires, node.expires)
+        writeLong(DatabaseKDBXXML.ElemUsageCount, node.usageCount.toKotlinLong())
+        writeDateInstant(DatabaseKDBXXML.ElemLocationChanged, node.locationChanged)
 
         xml.endTag(null, DatabaseKDBXXML.ElemTimes)
     }
@@ -709,9 +738,15 @@ class DatabaseOutputKDBX(private val mDatabaseKDBX: DatabaseKDBX,
                 } catch (e: Exception) {
                     Log.e(TAG, "Unable to write custom icon", e)
                 } finally {
-                    writeObject(DatabaseKDBXXML.ElemCustomIconItemData,
+                    writeString(DatabaseKDBXXML.ElemCustomIconItemData,
                             String(Base64.encode(customImageData, BASE_64_FLAG)))
                 }
+                if (iconCustom.name.isNotEmpty()) {
+                    writeString(DatabaseKDBXXML.ElemName, iconCustom.name)
+                }
+                iconCustom.lastModificationTime?.let { lastModificationTime ->
+                    writeDateInstant(DatabaseKDBXXML.ElemLastModTime, lastModificationTime)
+                }
 
                 xml.endTag(null, DatabaseKDBXXML.ElemCustomIconItem)
             }

app/src/main/java/com/kunzisoft/keepass/database/file/output/GroupOutputKDB.kt

@@ -19,13 +19,9 @@
  */
 package com.kunzisoft.keepass.database.file.output
 
-import com.kunzisoft.keepass.utils.UnsignedInt
-import com.kunzisoft.keepass.utils.dateTo5Bytes
-import com.kunzisoft.keepass.utils.uIntTo4Bytes
-import com.kunzisoft.keepass.utils.uShortTo2Bytes
-import com.kunzisoft.keepass.utils.writeStringToStream
 import com.kunzisoft.keepass.database.element.group.GroupKDB
 import com.kunzisoft.keepass.database.exception.DatabaseOutputException
+import com.kunzisoft.keepass.utils.*
 import java.io.IOException
 import java.io.OutputStream
 
@@ -77,7 +73,7 @@ class GroupOutputKDB(private val mGroup: GroupKDB,
             // Level
             mOutputStream.write(LEVEL_FIELD_TYPE)
             mOutputStream.write(LEVEL_FIELD_SIZE)
-            mOutputStream.write(uShortTo2Bytes(mGroup.level))
+            mOutputStream.write(uShortTo2Bytes(mGroup.getLevel()))
 
             // Flags
             mOutputStream.write(FLAGS_FIELD_TYPE)

app/src/main/java/com/kunzisoft/keepass/database/search/EntryKDBXSearchHandler.kt

@@ -1,89 +0,0 @@
-/*
- * Copyright 2020 Jeremy Jamet / Kunzisoft.
- *     
- * This file is part of KeePassDX.
- *
- *  KeePassDX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePassDX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.database.search
-
-import com.kunzisoft.keepass.database.action.node.NodeHandler
-import com.kunzisoft.keepass.database.element.entry.EntryKDBX
-import com.kunzisoft.keepass.database.search.iterator.EntrySearchStringIteratorKDBX
-
-class EntryKDBXSearchHandler(private val mSearchParametersKDBX: SearchParameters,
-                             private val mListStorage: MutableList<EntryKDBX>)
-    : NodeHandler<EntryKDBX>() {
-
-    override fun operate(node: EntryKDBX): Boolean {
-
-        if (mSearchParametersKDBX.excludeExpired
-                && node.isCurrentlyExpires) {
-            return true
-        }
-
-        if (searchStrings(node)) {
-            mListStorage.add(node)
-            return true
-        }
-
-        if (searchInGroupNames(node)) {
-            mListStorage.add(node)
-            return true
-        }
-
-        if (searchInUUID(node)) {
-            mListStorage.add(node)
-            return true
-        }
-
-        return true
-    }
-
-    private fun searchInGroupNames(entry: EntryKDBX): Boolean {
-        if (mSearchParametersKDBX.searchInGroupNames) {
-            val parent = entry.parent
-            if (parent != null) {
-                return parent.title
-                        .contains(mSearchParametersKDBX.searchString, mSearchParametersKDBX.ignoreCase)
-            }
-        }
-
-        return false
-    }
-
-    private fun searchInUUID(entry: EntryKDBX): Boolean {
-        if (mSearchParametersKDBX.searchInUUIDs) {
-            return UuidUtil.toHexString(entry.id)
-                    .contains(mSearchParametersKDBX.searchString, true)
-        }
-
-        return false
-    }
-
-    private fun searchStrings(entry: EntryKDBX): Boolean {
-        val iterator = EntrySearchStringIteratorKDBX(entry, mSearchParametersKDBX)
-        while (iterator.hasNext()) {
-            val stringValue = iterator.next()
-            if (stringValue.isNotEmpty()) {
-                if (stringValue.contains(mSearchParametersKDBX.searchString, mSearchParametersKDBX.ignoreCase)) {
-                    return true
-                }
-            }
-        }
-
-        return false
-    }
-}

app/src/main/java/com/kunzisoft/keepass/database/search/SearchHelper.kt

@@ -24,15 +24,67 @@ import com.kunzisoft.keepass.database.action.node.NodeHandler
 import com.kunzisoft.keepass.database.element.Database
 import com.kunzisoft.keepass.database.element.Entry
 import com.kunzisoft.keepass.database.element.Group
-import com.kunzisoft.keepass.database.search.iterator.EntrySearchStringIteratorKDB
-import com.kunzisoft.keepass.database.search.iterator.EntrySearchStringIteratorKDBX
 import com.kunzisoft.keepass.model.EntryInfo
 import com.kunzisoft.keepass.model.SearchInfo
+import com.kunzisoft.keepass.otp.OtpEntryFields.OTP_FIELD
 import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.timeout.TimeoutHelper
+import com.kunzisoft.keepass.utils.UuidUtil
 
 class SearchHelper {
 
+    private var incrementEntry = 0
+
+    fun createVirtualGroupWithSearchResult(database: Database,
+                                           searchParameters: SearchParameters,
+                                           omitBackup: Boolean,
+                                           max: Int): Group? {
+
+        val searchGroup = database.createGroup()
+        searchGroup?.isVirtual = true
+        searchGroup?.title = "\"" + searchParameters.searchQuery + "\""
+
+        // Search all entries
+        incrementEntry = 0
+        database.rootGroup?.doForEachChild(
+                object : NodeHandler<Entry>() {
+                    override fun operate(node: Entry): Boolean {
+                        if (incrementEntry >= max)
+                            return false
+                        if (entryContainsString(database, node, searchParameters)) {
+                            searchGroup?.addChildEntry(node)
+                            incrementEntry++
+                        }
+                        // Stop searching when we have max entries
+                        return incrementEntry < max
+                    }
+                },
+                object : NodeHandler<Group>() {
+                    override fun operate(node: Group): Boolean {
+                        return when {
+                            incrementEntry >= max -> false
+                            database.isGroupSearchable(node, omitBackup) -> true
+                            else -> false
+                        }
+                    }
+                },
+                false)
+
+        return searchGroup
+    }
+
+    private fun entryContainsString(database: Database,
+                                    entry: Entry,
+                                    searchParameters: SearchParameters): Boolean {
+        // To search in field references
+        database.startManageEntry(entry)
+        // Search all strings in the entry
+        val searchFound = searchInEntry(entry, searchParameters)
+        database.stopManageEntry(entry)
+
+        return searchFound
+    }
+
     companion object {
         const val MAX_SEARCH_ENTRY = 10
 
@@ -70,75 +122,67 @@ class SearchHelper {
                 onDatabaseClosed.invoke()
             }
         }
-    }
 
-    private var incrementEntry = 0
+        /**
+         * Return true if the search query in search parameters is found in available parameters
+         */
+        fun searchInEntry(entry: Entry,
+                          searchParameters: SearchParameters): Boolean {
+            val searchQuery = searchParameters.searchQuery
+            // Entry don't contains string if the search string is empty
+            if (searchQuery.isEmpty())
+                return false
 
-    fun createVirtualGroupWithSearchResult(database: Database,
-                                           searchQuery: String,
-                                           searchParameters: SearchParameters,
-                                           omitBackup: Boolean,
-                                           max: Int): Group? {
-
-        val searchGroup = database.createGroup()
-        searchGroup?.isVirtual = true
-        searchGroup?.title = "\"" + searchQuery + "\""
-
-        // Search all entries
-        incrementEntry = 0
-        database.rootGroup?.doForEachChild(
-                object : NodeHandler<Entry>() {
-                    override fun operate(node: Entry): Boolean {
-                        if (incrementEntry >= max)
-                            return false
-                        if (entryContainsString(node, searchQuery, searchParameters)) {
-                            searchGroup?.addChildEntry(node)
-                            incrementEntry++
-                        }
-                        // Stop searching when we have max entries
-                        return incrementEntry < max
+            // Search all strings in the KDBX entry
+            if (searchParameters.searchInTitles) {
+                if (checkSearchQuery(entry.title, searchParameters))
+                    return true
+            }
+            if (searchParameters.searchInUserNames) {
+                if (checkSearchQuery(entry.username, searchParameters))
+                    return true
+            }
+            if (searchParameters.searchInPasswords) {
+                if (checkSearchQuery(entry.password, searchParameters))
+                    return true
+            }
+            if (searchParameters.searchInUrls) {
+                if (checkSearchQuery(entry.url, searchParameters))
+                    return true
+            }
+            if (searchParameters.searchInNotes) {
+                if (checkSearchQuery(entry.notes, searchParameters))
+                    return true
+            }
+            if (searchParameters.searchInUUIDs) {
+                val hexString = UuidUtil.toHexString(entry.nodeId.id)
+                if (hexString != null && hexString.contains(searchQuery, true))
+                    return true
+            }
+            if (searchParameters.searchInOther) {
+                entry.getExtraFields().forEach { field ->
+                    if (field.name != OTP_FIELD
+                            || (field.name == OTP_FIELD && searchParameters.searchInOTP)) {
+                        if (checkSearchQuery(field.protectedValue.toString(), searchParameters))
+                            return true
                     }
-                },
-                object : NodeHandler<Group>() {
-                    override fun operate(node: Group): Boolean {
-                        return when {
-                            incrementEntry >= max -> false
-                            database.isGroupSearchable(node, omitBackup) -> true
-                            else -> false
-                        }
-                    }
-                },
-                false)
-
-        return searchGroup
-    }
-
-    private fun entryContainsString(entry: Entry,
-                                    searchQuery: String,
-                                    searchParameters: SearchParameters): Boolean {
-
-        // Entry don't contains string if the search string is empty
-        if (searchQuery.isEmpty())
-            return false
-
-        // Search all strings in the entry
-        var iterator: Iterator<String>? = null
-        entry.entryKDB?.let {
-            iterator = EntrySearchStringIteratorKDB(it, searchParameters)
-        }
-        entry.entryKDBX?.let {
-            iterator = EntrySearchStringIteratorKDBX(it, searchParameters)
-        }
-
-        iterator?.let {
-            while (it.hasNext()) {
-                val currentString = it.next()
-                if (currentString.isNotEmpty()
-                        && currentString.contains(searchQuery, true)) {
-                        return true
                 }
             }
+            return false
+        }
+
+        private fun checkSearchQuery(stringToCheck: String, searchParameters: SearchParameters): Boolean {
+            /*
+            // TODO Search settings
+            var regularExpression = false
+            var ignoreCase = true
+            var removeAccents = true <- Too much time, to study
+            var excludeExpired = false
+            var searchOnlyInCurrentGroup = false
+            */
+            return stringToCheck.isNotEmpty()
+                    && stringToCheck.contains(
+                        searchParameters.searchQuery, true)
         }
-        return false
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/search/SearchParameters.kt

@@ -23,57 +23,15 @@ package com.kunzisoft.keepass.database.search
  * Parameters for searching strings in the database.
  */
 class SearchParameters {
+    var searchQuery: String = ""
 
-    var searchString: String = ""
-
-    var regularExpression = false
     var searchInTitles = true
     var searchInUserNames = true
     var searchInPasswords = false
     var searchInUrls = true
-    var searchInGroupNames = false
     var searchInNotes = true
     var searchInOTP = false
     var searchInOther = true
     var searchInUUIDs = false
     var searchInTags = true
-    var ignoreCase = true
-    var ignoreExpired = false
-    var excludeExpired = false
-
-    constructor()
-
-    /**
-     * Copy search parameters
-     * @param source
-     */
-    constructor(source: SearchParameters) {
-        this.regularExpression = source.regularExpression
-        this.searchInTitles = source.searchInTitles
-        this.searchInUserNames = source.searchInUserNames
-        this.searchInPasswords = source.searchInPasswords
-        this.searchInUrls = source.searchInUrls
-        this.searchInGroupNames = source.searchInGroupNames
-        this.searchInNotes = source.searchInNotes
-        this.searchInOTP = source.searchInOTP
-        this.searchInOther = source.searchInOther
-        this.searchInUUIDs = source.searchInUUIDs
-        this.searchInTags = source.searchInTags
-        this.ignoreCase = source.ignoreCase
-        this.ignoreExpired = source.ignoreExpired
-        this.excludeExpired = source.excludeExpired
-    }
-
-    fun setupNone() {
-        searchInTitles = false
-        searchInUserNames = false
-        searchInPasswords = false
-        searchInUrls = false
-        searchInGroupNames = false
-        searchInNotes = false
-        searchInOTP = false
-        searchInOther = false
-        searchInUUIDs = false
-        searchInTags = false
-    }
 }

app/src/main/java/com/kunzisoft/keepass/database/search/UuidUtil.java

@@ -1,60 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePassDX.
- *
- *  KeePassDX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePassDX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.database.search;
-
-import java.util.UUID;
-
-import static com.kunzisoft.keepass.utils.StreamBytesUtilsKt.uuidTo16Bytes;
-
-public class UuidUtil {
-
-    public static String toHexString(UUID uuid) {
-        if (uuid == null) { return null; }
-
-        byte[] buf = uuidTo16Bytes(uuid);
-
-        int len = buf.length;
-        if (len == 0) { return ""; }
-
-        StringBuilder sb = new StringBuilder();
-
-        short bt;
-        char high, low;
-        for (byte b : buf) {
-            bt = (short) (b & 0xFF);
-            high = (char) (bt >>> 4);
-            low = (char) (bt & 0x0F);
-            sb.append(byteToChar(high));
-            sb.append(byteToChar(low));
-        }
-
-        return sb.toString();
-    }
-
-    // Use short to represent unsigned byte
-    private static char byteToChar(char bt) {
-        if (bt >= 10) {
-            return (char)('A' + bt - 10);
-        }
-        else {
-            return (char)('0' + bt);
-        }
-    }
-}

app/src/main/java/com/kunzisoft/keepass/database/search/iterator/EntrySearchStringIteratorKDB.kt

@@ -1,87 +0,0 @@
-/*
- * Copyright 2020 Jeremy Jamet / Kunzisoft.
- *     
- * This file is part of KeePassDX.
- *
- *  KeePassDX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePassDX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.database.search.iterator
-
-import com.kunzisoft.keepass.database.element.entry.EntryKDB
-import com.kunzisoft.keepass.database.search.SearchParameters
-
-import java.util.NoSuchElementException
-
-class EntrySearchStringIteratorKDB(
-        private val mEntry: EntryKDB,
-        private val mSearchParameters: SearchParameters)
-    : Iterator<String> {
-
-    private var current = 0
-
-    private val currentString: String
-        get() {
-            return when (current) {
-                title -> mEntry.title
-                url -> mEntry.url
-                username -> mEntry.username
-                notes -> mEntry.notes
-                else -> ""
-            }
-        }
-
-    override fun hasNext(): Boolean {
-        return current < maxEntries
-    }
-
-    override fun next(): String {
-        // Past the end of the list
-        if (current == maxEntries) {
-            throw NoSuchElementException("Past final string")
-        }
-
-        useSearchParameters()
-
-        val str = currentString
-        current++
-        return str
-    }
-
-    private fun useSearchParameters() {
-        var found = false
-        while (!found) {
-            found = when (current) {
-                title -> mSearchParameters.searchInTitles
-                url -> mSearchParameters.searchInUrls
-                username -> mSearchParameters.searchInUserNames
-                notes -> mSearchParameters.searchInNotes
-                else -> true
-            }
-
-            if (!found) {
-                current++
-            }
-        }
-    }
-
-    companion object {
-        private const val title = 0
-        private const val url = 1
-        private const val username = 2
-        private const val notes = 3
-        private const val maxEntries = 4
-    }
-
-}

app/src/main/java/com/kunzisoft/keepass/database/search/iterator/EntrySearchStringIteratorKDBX.kt

@@ -1,84 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *     
- * This file is part of KeePassDX.
- *
- *  KeePassDX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePassDX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.database.search.iterator
-
-import com.kunzisoft.keepass.database.element.entry.EntryKDBX
-import com.kunzisoft.keepass.database.element.security.ProtectedString
-import com.kunzisoft.keepass.database.search.SearchParameters
-import com.kunzisoft.keepass.otp.OtpEntryFields
-import java.util.*
-import kotlin.collections.Map.Entry
-
-class EntrySearchStringIteratorKDBX(
-        entry: EntryKDBX,
-        private val mSearchParameters: SearchParameters)
-    : Iterator<String> {
-
-    private var mCurrent: String? = null
-    private var mSetIterator: Iterator<Entry<String, ProtectedString>>? = null
-
-    init {
-        mSetIterator = entry.fields.entries.iterator()
-        advance()
-    }
-
-    override fun hasNext(): Boolean {
-        return mCurrent != null
-    }
-
-    override fun next(): String {
-        if (mCurrent == null) {
-            throw NoSuchElementException("Past the end of the list.")
-        }
-
-        val next:String = mCurrent!!
-        advance()
-        return next
-    }
-
-    private fun advance() {
-        mSetIterator?.let {
-            while (it.hasNext()) {
-                val entry = it.next()
-                val key = entry.key
-
-                if (searchInField(key)) {
-                    mCurrent = entry.value.toString()
-                    return
-                }
-            }
-        }
-
-        mCurrent = null
-    }
-
-    private fun searchInField(key: String): Boolean {
-        return when (key) {
-            EntryKDBX.STR_TITLE -> mSearchParameters.searchInTitles
-            EntryKDBX.STR_USERNAME -> mSearchParameters.searchInUserNames
-            EntryKDBX.STR_PASSWORD -> mSearchParameters.searchInPasswords
-            EntryKDBX.STR_URL -> mSearchParameters.searchInUrls
-            EntryKDBX.STR_NOTES -> mSearchParameters.searchInNotes
-            OtpEntryFields.OTP_FIELD -> mSearchParameters.searchInOTP
-            else -> mSearchParameters.searchInOther
-        }
-    }
-
-}

app/src/main/java/com/kunzisoft/keepass/otp/OtpElement.kt

@@ -93,7 +93,7 @@ data class OtpElement(var otpModel: OtpModel = OtpModel()) {
                 value
             } else {
                 TokenCalculator.HOTP_INITIAL_COUNTER
-                throw IllegalArgumentException()
+                throw NumberFormatException()
             }
         }
 
@@ -186,7 +186,7 @@ data class OtpElement(var otpModel: OtpModel = OtpModel()) {
     }
 
     companion object {
-        const val MIN_HOTP_COUNTER = 1
+        const val MIN_HOTP_COUNTER = 0
         const val MAX_HOTP_COUNTER = Long.MAX_VALUE
 
         const val MIN_TOTP_PERIOD = 1

app/src/main/java/com/kunzisoft/keepass/otp/OtpEntryFields.kt

@@ -295,22 +295,30 @@ object OtpEntryFields {
                 secretHexField != null -> otpElement.setHexSecret(secretHexField)
                 secretBase32Field != null -> otpElement.setBase32Secret(secretBase32Field)
                 secretBase64Field != null -> otpElement.setBase64Secret(secretBase64Field)
-                lengthField != null -> otpElement.digits = lengthField.toIntOrNull() ?: OTP_DEFAULT_DIGITS
-                periodField != null -> otpElement.period = periodField.toIntOrNull() ?: TOTP_DEFAULT_PERIOD
-                algorithmField != null -> otpElement.algorithm =
-                    when (algorithmField.toUpperCase(Locale.ENGLISH)) {
-                        TIMEOTP_ALGORITHM_SHA1_VALUE -> HashAlgorithm.SHA1
-                        TIMEOTP_ALGORITHM_SHA256_VALUE -> HashAlgorithm.SHA256
-                        TIMEOTP_ALGORITHM_SHA512_VALUE -> HashAlgorithm.SHA512
-                        else -> HashAlgorithm.SHA1
-                    }
                 else -> return false
             }
+            otpElement.type = OtpType.TOTP
+            if (lengthField != null) {
+                otpElement.digits = lengthField.toIntOrNull() ?: OTP_DEFAULT_DIGITS
+            }
+            if (lengthField != null) {
+                otpElement.digits = lengthField.toIntOrNull() ?: OTP_DEFAULT_DIGITS
+            }
+            if (periodField != null) {
+                otpElement.period = periodField.toIntOrNull() ?: TOTP_DEFAULT_PERIOD
+            }
+            if (algorithmField != null) {
+                otpElement.algorithm =
+                        when (algorithmField.toUpperCase(Locale.ENGLISH)) {
+                            TIMEOTP_ALGORITHM_SHA1_VALUE -> HashAlgorithm.SHA1
+                            TIMEOTP_ALGORITHM_SHA256_VALUE -> HashAlgorithm.SHA256
+                            TIMEOTP_ALGORITHM_SHA512_VALUE -> HashAlgorithm.SHA512
+                            else -> HashAlgorithm.SHA1
+                        }
+            }
         } catch (exception: Exception) {
             return false
         }
-
-        otpElement.type = OtpType.TOTP
         return true
     }
 
@@ -321,10 +329,10 @@ object OtpEntryFields {
                 return try {
                     // KeeOtp string format
                     val query = breakDownKeyValuePairs(plainText)
+                    otpElement.type = OtpType.TOTP
                     otpElement.setBase32Secret(query[SEED_KEY] ?: "")
                     otpElement.digits = query[DIGITS_KEY]?.toIntOrNull() ?: OTP_DEFAULT_DIGITS
                     otpElement.period = query[STEP_KEY]?.toIntOrNull() ?: TOTP_DEFAULT_PERIOD
-                    otpElement.type = OtpType.TOTP
                     true
                 } catch (exception: Exception) {
                     false
@@ -351,6 +359,7 @@ object OtpEntryFields {
                     // malformed
                     return false
                 }
+                otpElement.type = OtpType.TOTP
                 otpElement.period = matcher.group(1)?.toIntOrNull() ?: TOTP_DEFAULT_PERIOD
                 matcher.group(2)?.let { secondMatcher ->
                     try {
@@ -365,7 +374,6 @@ object OtpEntryFields {
         } catch (exception: Exception) {
             return false
         }
-        otpElement.type = OtpType.TOTP
         return true
     }
 
@@ -374,6 +382,7 @@ object OtpEntryFields {
         val secretHexField = getField(HMACOTP_SECRET_HEX_FIELD)
         val secretBase32Field = getField(HMACOTP_SECRET_BASE32_FIELD)
         val secretBase64Field = getField(HMACOTP_SECRET_BASE64_FIELD)
+        val secretCounterField = getField(HMACOTP_SECRET_COUNTER_FIELD)
         try {
             when {
                 secretField != null -> otpElement.setUTF8Secret(secretField)
@@ -382,16 +391,13 @@ object OtpEntryFields {
                 secretBase64Field != null -> otpElement.setBase64Secret(secretBase64Field)
                 else -> return false
             }
-
-            val secretCounterField = getField(HMACOTP_SECRET_COUNTER_FIELD)
+            otpElement.type = OtpType.HOTP
             if (secretCounterField != null) {
                 otpElement.counter = secretCounterField.toLongOrNull() ?: HOTP_INITIAL_COUNTER
             }
         } catch (exception: Exception) {
             return false
         }
-
-        otpElement.type = OtpType.HOTP
         return true
     }
 

app/src/main/java/com/kunzisoft/keepass/services/AdvancedUnlockNotificationService.kt

@@ -1,8 +1,7 @@
 package com.kunzisoft.keepass.services
 
 import android.app.PendingIntent
-import android.content.Context
-import android.content.Intent
+import android.content.*
 import android.net.Uri
 import android.os.Binder
 import android.os.IBinder
@@ -10,7 +9,6 @@ import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.app.database.CipherDatabaseEntity
 import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.timeout.TimeoutHelper
-import kotlinx.coroutines.*
 
 class AdvancedUnlockNotificationService : NotificationService() {
 
@@ -18,9 +16,6 @@ class AdvancedUnlockNotificationService : NotificationService() {
 
     private var mActionTaskBinder = AdvancedUnlockBinder()
 
-    private var notificationTimeoutMilliSecs: Long = 0
-    private var mTimerJob: Job? = null
-
     inner class AdvancedUnlockBinder: Binder() {
         fun getCipherDatabase(databaseUri: Uri): CipherDatabaseEntity? {
             return mTempCipherDao.firstOrNull { it.databaseUri == databaseUri.toString()}
@@ -50,94 +45,79 @@ class AdvancedUnlockNotificationService : NotificationService() {
         return getString(R.string.advanced_unlock)
     }
 
-    override fun onBind(intent: Intent): IBinder? {
-        super.onBind(intent)
-        return mActionTaskBinder
+    override fun onCreate() {
+        super.onCreate()
+        mTempCipherDao = ArrayList()
     }
 
-    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        super.onStartCommand(intent, flags, startId)
+    override fun onBind(intent: Intent): IBinder {
+        super.onBind(intent)
 
-        val deleteIntent = Intent(this, AdvancedUnlockNotificationService::class.java).apply {
-            action = ACTION_REMOVE_KEYS
-        }
-        val pendingDeleteIntent = PendingIntent.getService(this, 0, deleteIntent, PendingIntent.FLAG_UPDATE_CURRENT)
+        val pendingDeleteIntent = PendingIntent.getBroadcast(this,
+                4577, Intent(REMOVE_ADVANCED_UNLOCK_KEY_ACTION), 0)
         val biometricUnlockEnabled = PreferencesUtil.isBiometricUnlockEnable(this)
-        val notificationBuilder =  buildNewNotification().apply {
+        val notificationBuilder = buildNewNotification().apply {
             setSmallIcon(if (biometricUnlockEnabled) {
                 R.drawable.notification_ic_fingerprint_unlock_24dp
             } else {
                 R.drawable.notification_ic_device_unlock_24dp
             })
-            intent?.let {
-                setContentTitle(getString(R.string.advanced_unlock))
-            }
+            setContentTitle(getString(R.string.advanced_unlock))
             setContentText(getString(R.string.advanced_unlock_tap_delete))
             setContentIntent(pendingDeleteIntent)
             // Unfortunately swipe is disabled in lollipop+
             setDeleteIntent(pendingDeleteIntent)
         }
 
-        when (intent?.action) {
-            ACTION_TIMEOUT -> {
-                notificationTimeoutMilliSecs = PreferencesUtil.getAdvancedUnlockTimeout(this)
-                // Not necessarily a foreground service
-                if (mTimerJob == null && notificationTimeoutMilliSecs != TimeoutHelper.NEVER) {
-                    mTimerJob = CoroutineScope(Dispatchers.Main).launch {
-                        val maxPos = 100
-                        val posDurationMills = notificationTimeoutMilliSecs / maxPos
-                        for (pos in maxPos downTo 0) {
-                            notificationBuilder.setProgress(maxPos, pos, false)
-                            startForeground(notificationId, notificationBuilder.build())
-                            delay(posDurationMills)
-                            if (pos <= 0) {
-                                stopSelf()
-                            }
-                        }
-                        notificationManager?.cancel(notificationId)
-                        mTimerJob = null
-                        cancel()
-                    }
-                } else {
-                    startForeground(notificationId, notificationBuilder.build())
-                }
+        val notificationTimeoutMilliSecs = PreferencesUtil.getAdvancedUnlockTimeout(this)
+        // Not necessarily a foreground service
+        if (mTimerJob == null && notificationTimeoutMilliSecs != TimeoutHelper.NEVER) {
+            defineTimerJob(notificationBuilder, notificationTimeoutMilliSecs) {
+                sendBroadcast(Intent(REMOVE_ADVANCED_UNLOCK_KEY_ACTION))
             }
-            ACTION_REMOVE_KEYS -> {
-                stopSelf()
-            }
-            else -> {}
+        } else {
+            startForeground(notificationId, notificationBuilder.build())
         }
 
-        return START_STICKY
+        return mActionTaskBinder
     }
 
-    override fun onCreate() {
-        super.onCreate()
-        mTempCipherDao = ArrayList()
+    override fun onUnbind(intent: Intent?): Boolean {
+        stopSelf()
+        return super.onUnbind(intent)
     }
 
     override fun onDestroy() {
         mTempCipherDao.clear()
-        mTimerJob?.cancel()
         super.onDestroy()
     }
 
+    class AdvancedUnlockReceiver(var removeKeyAction: () -> Unit): BroadcastReceiver() {
+        override fun onReceive(context: Context, intent: Intent) {
+            intent.action?.let {
+                when (it) {
+                    REMOVE_ADVANCED_UNLOCK_KEY_ACTION -> {
+                        removeKeyAction.invoke()
+                    }
+                }
+            }
+        }
+    }
+
     companion object {
         private const val CHANNEL_ADVANCED_UNLOCK_ID = "com.kunzisoft.keepass.notification.channel.unlock"
+        const val REMOVE_ADVANCED_UNLOCK_KEY_ACTION = "com.kunzisoft.keepass.REMOVE_ADVANCED_UNLOCK_KEY"
 
-        private const val ACTION_TIMEOUT = "ACTION_TIMEOUT"
-        private const val ACTION_REMOVE_KEYS = "ACTION_REMOVE_KEYS"
-
-        fun startServiceForTimeout(context: Context) {
-            if (PreferencesUtil.isTempAdvancedUnlockEnable(context)) {
-                context.startService(Intent(context, AdvancedUnlockNotificationService::class.java).apply {
-                    action = ACTION_TIMEOUT
-                })
-            }
+        // Only one service connection
+        fun bindService(context: Context, serviceConnection: ServiceConnection, flags: Int) {
+            context.bindService(Intent(context,
+                    AdvancedUnlockNotificationService::class.java),
+                    serviceConnection,
+                    flags)
         }
 
-        fun stopService(context: Context) {
-            context.stopService(Intent(context, AdvancedUnlockNotificationService::class.java))
+        fun unbindService(context: Context, serviceConnection: ServiceConnection) {
+            context.unbindService(serviceConnection)
         }
     }
 }

app/src/main/java/com/kunzisoft/keepass/services/AttachmentFileNotificationService.kt

@@ -26,7 +26,6 @@ import android.net.Uri
 import android.os.Binder
 import android.os.IBinder
 import android.util.Log
-import androidx.documentfile.provider.DocumentFile
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.database.element.Attachment
 import com.kunzisoft.keepass.database.element.Database
@@ -34,6 +33,7 @@ import com.kunzisoft.keepass.model.AttachmentState
 import com.kunzisoft.keepass.model.EntryAttachmentState
 import com.kunzisoft.keepass.model.StreamDirection
 import com.kunzisoft.keepass.tasks.BinaryDatabaseManager
+import com.kunzisoft.keepass.utils.UriUtil
 import kotlinx.coroutines.*
 import java.util.*
 import java.util.concurrent.CopyOnWriteArrayList
@@ -173,7 +173,8 @@ class AttachmentFileNotificationService: LockNotificationService() {
                     putExtra(FILE_URI_KEY, attachmentNotification.uri)
                 }, PendingIntent.FLAG_CANCEL_CURRENT)
 
-        val fileName = DocumentFile.fromSingleUri(this, attachmentNotification.uri)?.name ?: ""
+        val fileName = UriUtil.getFileData(this, attachmentNotification.uri)?.name
+                ?: attachmentNotification.uri.path
 
         val builder = buildNewNotification().apply {
             when (attachmentNotification.entryAttachmentState.streamDirection) {

app/src/main/java/com/kunzisoft/keepass/services/ClipboardEntryNotificationService.kt

@@ -37,8 +37,6 @@ class ClipboardEntryNotificationService : LockNotificationService() {
     override val notificationId = 485
     private var mEntryInfo: EntryInfo? = null
     private var clipboardHelper: ClipboardHelper? = null
-    private var notificationTimeoutMilliSecs: Long = 0
-    private var cleanCopyNotificationTimerTask: Thread? = null
 
     override fun retrieveChannelId(): String {
         return CHANNEL_CLIPBOARD_ID
@@ -69,16 +67,13 @@ class ClipboardEntryNotificationService : LockNotificationService() {
         // Get entry info from intent
         mEntryInfo = intent?.getParcelableExtra(EXTRA_ENTRY_INFO)
 
-        //Get settings
-        notificationTimeoutMilliSecs = PreferencesUtil.getClipboardTimeout(this)
-
         when {
             intent == null -> Log.w(TAG, "null intent")
             ACTION_NEW_NOTIFICATION == intent.action -> {
                 newNotification(mEntryInfo?.title, constructListOfField(intent))
             }
             ACTION_CLEAN_CLIPBOARD == intent.action -> {
-                stopTask(cleanCopyNotificationTimerTask)
+                mTimerJob?.cancel()
                 cleanClipboard()
                 stopNotificationAndSendLockIfNeeded()
             }
@@ -121,7 +116,7 @@ class ClipboardEntryNotificationService : LockNotificationService() {
     }
 
     private fun newNotification(title: String?, fieldsToAdd: ArrayList<ClipboardEntryNotificationField>) {
-        stopTask(cleanCopyNotificationTimerTask)
+        mTimerJob?.cancel()
 
         val builder = buildNewNotification()
                 .setSmallIcon(R.drawable.notification_ic_clipboard_key_24dp)
@@ -147,7 +142,7 @@ class ClipboardEntryNotificationService : LockNotificationService() {
     }
 
     private fun copyField(fieldToCopy: ClipboardEntryNotificationField, nextFields: ArrayList<ClipboardEntryNotificationField>) {
-        stopTask(cleanCopyNotificationTimerTask)
+        mTimerJob?.cancel()
 
         try {
             var generatedValue = fieldToCopy.getGeneratedValue(mEntryInfo)
@@ -170,40 +165,25 @@ class ClipboardEntryNotificationService : LockNotificationService() {
                     this, 0, cleanIntent, PendingIntent.FLAG_UPDATE_CURRENT)
             builder.setDeleteIntent(cleanPendingIntent)
 
-            val myNotificationId = notificationId
-
+            //Get settings
+            val notificationTimeoutMilliSecs = PreferencesUtil.getClipboardTimeout(this)
             if (notificationTimeoutMilliSecs != NEVER) {
-                cleanCopyNotificationTimerTask = Thread {
-                    val maxPos = 100
-                    val posDurationMills = notificationTimeoutMilliSecs / maxPos
-                    for (pos in maxPos downTo 0) {
-                        val newGeneratedValue = fieldToCopy.getGeneratedValue(mEntryInfo)
-                        // New auto generated value
-                        if (generatedValue != newGeneratedValue) {
-                            generatedValue = newGeneratedValue
-                            clipboardHelper?.copyToClipboard(fieldToCopy.label, generatedValue)
-                        }
-                        builder.setProgress(maxPos, pos, false)
-                        notificationManager?.notify(myNotificationId, builder.build())
-                        try {
-                            Thread.sleep(posDurationMills)
-                        } catch (e: InterruptedException) {
-                            break
-                        }
-                        if (pos <= 0) {
-                            stopNotificationAndSendLockIfNeeded()
-                        }
+                defineTimerJob(builder, notificationTimeoutMilliSecs, {
+                    val newGeneratedValue = fieldToCopy.getGeneratedValue(mEntryInfo)
+                    // New auto generated value
+                    if (generatedValue != newGeneratedValue) {
+                        generatedValue = newGeneratedValue
+                        clipboardHelper?.copyToClipboard(fieldToCopy.label, generatedValue)
                     }
-                    stopTask(cleanCopyNotificationTimerTask)
-                    notificationManager?.cancel(myNotificationId)
+                }) {
+                    stopNotificationAndSendLockIfNeeded()
                     // Clean password only if no next field
                     if (nextFields.size <= 0)
                         cleanClipboard()
                 }
-                cleanCopyNotificationTimerTask?.start()
             } else {
                 // No timer
-                notificationManager?.notify(myNotificationId, builder.build())
+                notificationManager?.notify(notificationId, builder.build())
             }
 
         } catch (e: Exception) {
@@ -228,10 +208,6 @@ class ClipboardEntryNotificationService : LockNotificationService() {
 
     override fun onDestroy() {
         cleanClipboard()
-
-        stopTask(cleanCopyNotificationTimerTask)
-        cleanCopyNotificationTimerTask = null
-
         super.onDestroy()
     }
 

app/src/main/java/com/kunzisoft/keepass/services/DatabaseTaskNotificationService.kt

@@ -200,10 +200,6 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
         if (intentAction == null && !mDatabase.loaded) {
             stopSelf()
         }
-        if (intentAction == ACTION_DATABASE_CLOSE) {
-            // Send lock action
-            sendBroadcast(Intent(LOCK_ACTION))
-        }
 
         val actionRunnable: ActionRunnable? =  when (intentAction) {
             ACTION_DATABASE_CREATE_TASK -> buildDatabaseCreateActionTask(intent)
@@ -378,10 +374,8 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
                             ReadOnlyHelper.putReadOnlyInIntent(this, mDatabase.isReadOnly)
                         },
                         PendingIntent.FLAG_UPDATE_CURRENT)
-                val deleteIntent = Intent(this, DatabaseTaskNotificationService::class.java).apply {
-                    action = ACTION_DATABASE_CLOSE
-                }
-                val pendingDeleteIntent = PendingIntent.getService(this, 0, deleteIntent, PendingIntent.FLAG_UPDATE_CURRENT)
+                val pendingDeleteIntent = PendingIntent.getBroadcast(this,
+                        4576, Intent(LOCK_ACTION), 0)
                 // Add actions in notifications
                 notificationBuilder.apply {
                     setContentText(mDatabase.name + " (" + mDatabase.version + ")")
@@ -877,7 +871,6 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
         const val ACTION_DATABASE_UPDATE_PARALLELISM_TASK = "ACTION_DATABASE_UPDATE_PARALLELISM_TASK"
         const val ACTION_DATABASE_UPDATE_ITERATIONS_TASK = "ACTION_DATABASE_UPDATE_ITERATIONS_TASK"
         const val ACTION_DATABASE_SAVE = "ACTION_DATABASE_SAVE"
-        const val ACTION_DATABASE_CLOSE = "ACTION_DATABASE_CLOSE"
 
         const val DATABASE_TASK_TITLE_KEY = "DATABASE_TASK_TITLE_KEY"
         const val DATABASE_TASK_MESSAGE_KEY = "DATABASE_TASK_MESSAGE_KEY"

app/src/main/java/com/kunzisoft/keepass/services/KeyboardEntryNotificationService.kt

@@ -35,8 +35,7 @@ import com.kunzisoft.keepass.utils.LOCK_ACTION
 class KeyboardEntryNotificationService : LockNotificationService() {
 
     override val notificationId = 486
-    private var cleanNotificationTimerTask: Thread? = null
-    private var notificationTimeoutMilliSecs: Long = 0
+    private var mNotificationTimeoutMilliSecs: Long = 0
 
     private var pendingDeleteIntent: PendingIntent? = null
 
@@ -61,7 +60,7 @@ class KeyboardEntryNotificationService : LockNotificationService() {
         super.onStartCommand(intent, flags, startId)
 
         //Get settings
-        notificationTimeoutMilliSecs = PreferenceManager.getDefaultSharedPreferences(this)
+        mNotificationTimeoutMilliSecs = PreferenceManager.getDefaultSharedPreferences(this)
                 .getString(getString(R.string.keyboard_entry_timeout_key),
                 getString(R.string.timeout_default))?.toLong() ?: TimeoutHelper.DEFAULT_TIMEOUT
 
@@ -107,27 +106,12 @@ class KeyboardEntryNotificationService : LockNotificationService() {
         notificationManager?.cancel(notificationId)
         notificationManager?.notify(notificationId, builder.build())
 
-        stopTask(cleanNotificationTimerTask)
         // Timeout only if notification clear is available
         if (PreferencesUtil.isClearKeyboardNotificationEnable(this)) {
-            if (notificationTimeoutMilliSecs != TimeoutHelper.NEVER) {
-                cleanNotificationTimerTask = Thread {
-                    val maxPos = 100
-                    val posDurationMills = notificationTimeoutMilliSecs / maxPos
-                    for (pos in maxPos downTo 0) {
-                        builder.setProgress(maxPos, pos, false)
-                        notificationManager?.notify(notificationId, builder.build())
-                        try {
-                            Thread.sleep(posDurationMills)
-                        } catch (e: InterruptedException) {
-                            break
-                        }
-                        if (pos <= 0) {
-                            stopNotificationAndSendLockIfNeeded()
-                        }
-                    }
+            if (mNotificationTimeoutMilliSecs != TimeoutHelper.NEVER) {
+                defineTimerJob(builder, mNotificationTimeoutMilliSecs) {
+                    stopNotificationAndSendLockIfNeeded()
                 }
-                cleanNotificationTimerTask?.start()
             }
         }
     }
@@ -142,8 +126,6 @@ class KeyboardEntryNotificationService : LockNotificationService() {
         // Remove the entry from the keyboard
         MagikIME.removeEntry(this)
 
-        stopTask(cleanNotificationTimerTask)
-        cleanNotificationTimerTask = null
         pendingDeleteIntent?.cancel()
 
         super.onDestroy()

app/src/main/java/com/kunzisoft/keepass/services/LockNotificationService.kt

@@ -26,8 +26,9 @@ import com.kunzisoft.keepass.utils.unregisterLockReceiver
 
 abstract class LockNotificationService : NotificationService() {
 
-    private var onStart: Boolean = false
-    private var mLockReceiver: LockReceiver? = null
+    private var mLockReceiver: LockReceiver = LockReceiver {
+        actionOnLock()
+    }
 
     protected open fun actionOnLock() {
         // Stop the service in all cases
@@ -36,35 +37,17 @@ abstract class LockNotificationService : NotificationService() {
 
     override fun onCreate() {
         super.onCreate()
-
         // Register a lock receiver to stop notification service when lock on keyboard is performed
-        mLockReceiver = LockReceiver {
-            if (onStart)
-                actionOnLock()
-        }
         registerLockReceiver(mLockReceiver)
     }
 
-    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        onStart = true
-        return super.onStartCommand(intent, flags, startId)
-    }
-
-    protected fun stopTask(task: Thread?) {
-        if (task != null && task.isAlive)
-            task.interrupt()
-    }
-
     override fun onTaskRemoved(rootIntent: Intent?) {
-        notificationManager?.cancel(notificationId)
-
+        stopSelf()
         super.onTaskRemoved(rootIntent)
     }
 
     override fun onDestroy() {
-
         unregisterLockReceiver(mLockReceiver)
-
         super.onDestroy()
     }
 }

app/src/main/java/com/kunzisoft/keepass/services/NotificationService.kt

@@ -11,6 +11,7 @@ import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.stylish.Stylish
+import kotlinx.coroutines.*
 
 
 abstract class NotificationService : Service() {
@@ -18,6 +19,8 @@ abstract class NotificationService : Service() {
     protected var notificationManager: NotificationManagerCompat? = null
     private var colorNotificationAccent: Int = 0
 
+    protected var mTimerJob: Job? = null
+
     protected abstract val notificationId: Int
 
     override fun onBind(intent: Intent): IBinder? {
@@ -71,7 +74,38 @@ abstract class NotificationService : Service() {
         }
     }
 
+    protected fun defineTimerJob(builder: NotificationCompat.Builder,
+                                 timeoutMilliseconds: Long,
+                                 actionAfterASecond: (() -> Unit)? = null,
+                                 actionEnd: () -> Unit) {
+        mTimerJob?.cancel()
+        mTimerJob = CoroutineScope(Dispatchers.Main).launch {
+            if (timeoutMilliseconds > 0) {
+                val timeoutInSeconds = timeoutMilliseconds / 1000L
+                for (currentTime in timeoutInSeconds downTo 0) {
+                    actionAfterASecond?.invoke()
+                    builder.setProgress(100,
+                            (currentTime * 100 / timeoutInSeconds).toInt(),
+                            false)
+                    startForeground(notificationId, builder.build())
+                    delay(1000)
+                    if (currentTime <= 0) {
+                        actionEnd()
+                    }
+                }
+            } else {
+                // If timeout is 0, run action once
+                actionEnd()
+            }
+            notificationManager?.cancel(notificationId)
+            mTimerJob = null
+            cancel()
+        }
+    }
+
     override fun onDestroy() {
+        mTimerJob?.cancel()
+        mTimerJob = null
         notificationManager?.cancel(notificationId)
 
         super.onDestroy()

app/src/main/java/com/kunzisoft/keepass/settings/MagikeyboardSettingsFragment.kt

@@ -20,9 +20,12 @@
 package com.kunzisoft.keepass.settings
 
 import android.os.Bundle
+import androidx.fragment.app.DialogFragment
+import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 
 import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.settings.preferencedialogfragment.DurationDialogFragmentCompat
 
 class MagikeyboardSettingsFragment : PreferenceFragmentCompat() {
 
@@ -30,4 +33,31 @@ class MagikeyboardSettingsFragment : PreferenceFragmentCompat() {
         // Load the preferences from an XML resource
         setPreferencesFromResource(R.xml.preferences_keyboard, rootKey)
     }
+
+    override fun onDisplayPreferenceDialog(preference: Preference?) {
+
+        var otherDialogFragment = false
+
+        var dialogFragment: DialogFragment? = null
+        // Main Preferences
+        when (preference?.key) {
+            getString(R.string.keyboard_entry_timeout_key) -> {
+                dialogFragment = DurationDialogFragmentCompat.newInstance(preference.key)
+            }
+            else -> otherDialogFragment = true
+        }
+
+        if (dialogFragment != null) {
+            dialogFragment.setTargetFragment(this, 0)
+            dialogFragment.show(parentFragmentManager, TAG_PREF_FRAGMENT)
+        }
+        // Could not be handled here. Try with the super method.
+        else if (otherDialogFragment) {
+            super.onDisplayPreferenceDialog(preference)
+        }
+    }
+
+    companion object {
+        private const val TAG_PREF_FRAGMENT = "TAG_PREF_FRAGMENT"
+    }
 }

app/src/main/java/com/kunzisoft/keepass/settings/NestedAppSettingsFragment.kt

@@ -30,6 +30,7 @@ import android.view.autofill.AutofillManager
 import android.widget.Toast
 import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.FragmentActivity
 import androidx.preference.ListPreference
 import androidx.preference.Preference
@@ -44,8 +45,8 @@ import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
 import com.kunzisoft.keepass.biometric.AdvancedUnlockManager
 import com.kunzisoft.keepass.education.Education
 import com.kunzisoft.keepass.icons.IconPackChooser
-import com.kunzisoft.keepass.services.AdvancedUnlockNotificationService
 import com.kunzisoft.keepass.settings.preference.IconPackListPreference
+import com.kunzisoft.keepass.settings.preferencedialogfragment.DurationDialogFragmentCompat
 import com.kunzisoft.keepass.utils.UriUtil
 
 
@@ -90,6 +91,20 @@ class NestedAppSettingsFragment : NestedSettingsFragment() {
                 }
                 true
             }
+
+            findPreference<Preference>(getString(R.string.import_app_properties_key))?.setOnPreferenceClickListener { _ ->
+                (activity as? SettingsActivity?)?.apply {
+                    importAppProperties()
+                }
+                true
+            }
+
+            findPreference<Preference>(getString(R.string.export_app_properties_key))?.setOnPreferenceClickListener { _ ->
+                (activity as? SettingsActivity?)?.apply {
+                    exportAppProperties()
+                }
+                true
+            }
         }
     }
 
@@ -358,7 +373,6 @@ class NestedAppSettingsFragment : NestedSettingsFragment() {
                                     }
                                 })
                     }
-                    AdvancedUnlockNotificationService.stopService(activity.applicationContext)
                     CipherDatabaseAction.getInstance(activity.applicationContext).deleteAll()
                 }
                 .setNegativeButton(resources.getString(android.R.string.cancel)
@@ -388,10 +402,7 @@ class NestedAppSettingsFragment : NestedSettingsFragment() {
                     Stylish.assignStyle(activity, styleIdString)
                     // Relaunch the current activity to redraw theme
                     (activity as? SettingsActivity?)?.apply {
-                        keepCurrentScreen()
-                        startActivity(intent)
-                        finish()
-                        activity.overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out)
+                        relaunchCurrentScreen()
                     }
                 }
                 styleEnabled
@@ -399,10 +410,7 @@ class NestedAppSettingsFragment : NestedSettingsFragment() {
 
             findPreference<ListPreference>(getString(R.string.setting_style_brightness_key))?.setOnPreferenceChangeListener { _, _ ->
                 (activity as? SettingsActivity?)?.apply {
-                    keepCurrentScreen()
-                    startActivity(intent)
-                    finish()
-                    activity.overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out)
+                    relaunchCurrentScreen()
                 }
                 true
             }
@@ -440,6 +448,31 @@ class NestedAppSettingsFragment : NestedSettingsFragment() {
         }
     }
 
+    override fun onDisplayPreferenceDialog(preference: Preference?) {
+
+        var otherDialogFragment = false
+
+        var dialogFragment: DialogFragment? = null
+        // Main Preferences
+        when (preference?.key) {
+            getString(R.string.app_timeout_key),
+            getString(R.string.clipboard_timeout_key),
+            getString(R.string.temp_advanced_unlock_timeout_key) -> {
+                dialogFragment = DurationDialogFragmentCompat.newInstance(preference.key)
+            }
+            else -> otherDialogFragment = true
+        }
+
+        if (dialogFragment != null) {
+            dialogFragment.setTargetFragment(this, 0)
+            dialogFragment.show(parentFragmentManager, TAG_PREF_FRAGMENT)
+        }
+        // Could not be handled here. Try with the super method.
+        else if (otherDialogFragment) {
+            super.onDisplayPreferenceDialog(preference)
+        }
+    }
+
     override fun onResume() {
         super.onResume()
         activity?.let { activity ->
@@ -470,7 +503,7 @@ class NestedAppSettingsFragment : NestedSettingsFragment() {
     }
 
     companion object {
-
         private const val REQUEST_CODE_AUTOFILL = 5201
+        private const val TAG_PREF_FRAGMENT = "TAG_PREF_FRAGMENT"
     }
 }

app/src/main/java/com/kunzisoft/keepass/settings/NestedDatabaseSettingsFragment.kt

@@ -576,7 +576,6 @@ class NestedDatabaseSettingsFragment : NestedSettingsFragment() {
     }
 
     companion object {
-
         private const val TAG_PREF_FRAGMENT = "TAG_PREF_FRAGMENT"
     }
 }

app/src/main/java/com/kunzisoft/keepass/settings/PreferencesUtil.kt

@@ -21,14 +21,17 @@ package com.kunzisoft.keepass.settings
 
 import android.app.backup.BackupManager
 import android.content.Context
+import android.content.SharedPreferences
 import android.content.res.Resources
 import android.net.Uri
+import android.util.Log
 import androidx.preference.PreferenceManager
 import com.kunzisoft.keepass.BuildConfig
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.stylish.Stylish
 import com.kunzisoft.keepass.biometric.AdvancedUnlockManager
 import com.kunzisoft.keepass.database.element.SortNodeEnum
+import com.kunzisoft.keepass.education.Education
 import com.kunzisoft.keepass.timeout.TimeoutHelper
 import java.util.*
 
@@ -134,28 +137,48 @@ object PreferencesUtil {
     }
 
     fun getStyle(context: Context): String {
-        val stylishPrefKey = context.getString(R.string.setting_style_key)
-        val defaultStyleString = context.getString(R.string.list_style_name_light)
+        val defaultStyleString = Stylish.defaultStyle(context)
         val styleString = PreferenceManager.getDefaultSharedPreferences(context)
-                .getString(stylishPrefKey, defaultStyleString)
+                .getString(context.getString(R.string.setting_style_key), defaultStyleString)
                 ?: defaultStyleString
-        return Stylish.retrieveEquivalentLightStyle(context, styleString)
+        // Return the system style
+        return Stylish.retrieveEquivalentSystemStyle(context, styleString)
+    }
+
+    fun setStyle(context: Context, styleString: String) {
+        var tempThemeString = styleString
+        if (BuildConfig.CLOSED_STORE || !Education.isEducationScreenReclickedPerformed(context)) {
+            if (tempThemeString in BuildConfig.STYLES_DISABLED) {
+                tempThemeString = Stylish.defaultStyle(context)
+            }
+        }
+        // Store light style to show selection in array list
+        tempThemeString = Stylish.retrieveEquivalentLightStyle(context, tempThemeString)
+        PreferenceManager.getDefaultSharedPreferences(context)
+                .edit()
+                .putString(context.getString(R.string.setting_style_key), tempThemeString)
+                .apply()
+        Stylish.load(context)
     }
 
     fun getStyleBrightness(context: Context): String? {
         val prefs = PreferenceManager.getDefaultSharedPreferences(context)
         return prefs.getString(context.getString(R.string.setting_style_brightness_key),
-                context.resources.getString(R.string.list_style_brightness_follow_system))
+                context.getString(R.string.list_style_brightness_follow_system))
     }
 
     /**
      * Retrieve the text size in % (1 for 100%)
      */
     fun getListTextSize(context: Context): Float {
-        val prefs = PreferenceManager.getDefaultSharedPreferences(context)
-        val listSizeString = prefs.getString(context.getString(R.string.list_size_key),
-                            context.getString(R.string.list_size_string_medium))
-        val index = context.resources.getStringArray(R.array.list_size_string_values).indexOf(listSizeString)
+        val index = try {
+            val prefs = PreferenceManager.getDefaultSharedPreferences(context)
+            val listSizeString = prefs.getString(context.getString(R.string.list_size_key),
+                    context.getString(R.string.list_size_string_medium))
+            context.resources.getStringArray(R.array.list_size_string_values).indexOf(listSizeString)
+        } catch (e: Exception) {
+            1
+        }
         val typedArray = context.resources.obtainTypedArray(R.array.list_size_values)
         val listSize = typedArray.getFloat(index, 1.0F)
         typedArray.recycle()
@@ -289,11 +312,13 @@ object PreferencesUtil {
     }
 
     fun getListSort(context: Context): SortNodeEnum {
-        val prefs = PreferenceManager.getDefaultSharedPreferences(context)
-        prefs.getString(context.getString(R.string.sort_node_key),
-                SortNodeEnum.DB.name)?.let {
-            return SortNodeEnum.valueOf(it)
-        }
+        try {
+            val prefs = PreferenceManager.getDefaultSharedPreferences(context)
+            prefs.getString(context.getString(R.string.sort_node_key),
+                    SortNodeEnum.DB.name)?.let {
+                return SortNodeEnum.valueOf(it)
+            }
+        } catch (e: Exception) {}
         return SortNodeEnum.DB
     }
 
@@ -517,4 +542,133 @@ object PreferencesUtil {
                 .putStringSet(context.getString(R.string.autofill_web_domain_blocklist_key), setItems)
                 .apply()
     }
+
+    fun getAppProperties(context: Context): Properties {
+        val properties = Properties()
+        for ((name, value) in PreferenceManager.getDefaultSharedPreferences(context).all) {
+            properties[name] = value.toString()
+        }
+        for ((name, value) in Education.getEducationSharedPreferences(context).all) {
+            properties[name] = value.toString()
+        }
+        return properties
+    }
+
+    private fun getStringSetFromProperties(value: String): Set<String> {
+        return value.removePrefix("[")
+                .removeSuffix("]")
+                .split(", ")
+                .toSet()
+    }
+
+    private fun putPropertiesInPreferences(properties: Properties,
+                                           preferences: SharedPreferences,
+                                           putProperty: (editor: SharedPreferences.Editor,
+                                                         name: String,
+                                                         value: String) -> Unit) {
+        preferences.edit().apply {
+            for ((name, value) in properties) {
+                try {
+                    putProperty(this, name as String, value as String)
+                } catch (e:Exception) {
+                    Log.e("PreferencesUtil", "Error when trying to parse app property $name=$value", e)
+                }
+            }
+        }.apply()
+    }
+
+    fun setAppProperties(context: Context, properties: Properties) {
+        putPropertiesInPreferences(properties,
+                PreferenceManager.getDefaultSharedPreferences(context)) { editor, name, value ->
+            when (name) {
+                context.getString(R.string.allow_no_password_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.delete_entered_password_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.enable_read_only_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.enable_auto_save_database_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.omit_backup_search_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.auto_focus_search_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.subdomain_search_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.app_timeout_key) -> editor.putString(name, value.toLong().toString())
+                context.getString(R.string.lock_database_screen_off_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.lock_database_back_root_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.lock_database_show_button_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.password_length_key) -> editor.putInt(name, value.toInt())
+                context.getString(R.string.list_password_generator_options_key) -> editor.putStringSet(name, getStringSetFromProperties(value))
+                context.getString(R.string.hide_password_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.allow_copy_password_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.remember_database_locations_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.show_recent_files_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.hide_broken_locations_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.remember_keyfile_locations_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.biometric_unlock_enable_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.device_credential_unlock_enable_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.biometric_auto_open_prompt_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.temp_advanced_unlock_enable_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.temp_advanced_unlock_timeout_key) -> editor.putString(name, value.toLong().toString())
+
+                context.getString(R.string.magic_keyboard_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.clipboard_notifications_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.clear_clipboard_notification_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.clipboard_timeout_key) -> editor.putString(name, value.toLong().toString())
+                context.getString(R.string.settings_autofill_enable_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_notification_entry_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_notification_entry_clear_close_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_entry_timeout_key) -> editor.putString(name, value.toLong().toString())
+                context.getString(R.string.keyboard_selection_entry_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_search_share_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_save_search_info_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_auto_go_action_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_key_vibrate_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_key_sound_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_previous_database_credentials_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_previous_fill_in_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.keyboard_previous_lock_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.autofill_close_database_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.autofill_auto_search_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.autofill_inline_suggestions_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.autofill_save_search_info_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.autofill_ask_to_save_data_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.autofill_application_id_blocklist_key) -> editor.putStringSet(name, getStringSetFromProperties(value))
+                context.getString(R.string.autofill_web_domain_blocklist_key) -> editor.putStringSet(name, getStringSetFromProperties(value))
+
+                context.getString(R.string.setting_style_key) -> setStyle(context, value)
+                context.getString(R.string.setting_style_brightness_key) -> editor.putString(name, value)
+                context.getString(R.string.setting_icon_pack_choose_key) -> editor.putString(name, value)
+                context.getString(R.string.list_entries_show_username_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.list_groups_show_number_entries_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.list_size_key) -> editor.putString(name, value)
+                context.getString(R.string.monospace_font_fields_enable_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.hide_expired_entries_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.show_uuid_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.enable_education_screens_key) -> editor.putBoolean(name, value.toBoolean())
+
+                context.getString(R.string.sort_node_key) -> editor.putString(name, value)
+                context.getString(R.string.sort_group_before_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.sort_ascending_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.sort_recycle_bin_bottom_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.allow_copy_password_first_time_key) -> editor.putBoolean(name, value.toBoolean())
+            }
+        }
+
+        putPropertiesInPreferences(properties,
+                Education.getEducationSharedPreferences(context)) { editor, name, value ->
+            when (name) {
+                context.getString(R.string.education_create_db_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_select_db_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_unlock_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_read_only_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_biometric_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_search_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_new_node_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_sort_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_lock_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_copy_username_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_entry_edit_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_password_generator_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_entry_new_field_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_add_attachment_key) -> editor.putBoolean(name, value.toBoolean())
+                context.getString(R.string.education_setup_OTP_key) -> editor.putBoolean(name, value.toBoolean())
+            }
+        }
+    }
 }

app/src/main/java/com/kunzisoft/keepass/settings/SettingsActivity.kt

@@ -24,22 +24,27 @@ import android.app.backup.BackupManager
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
+import android.util.Log
 import android.view.MenuItem
 import android.view.View
+import android.widget.Toast
 import androidx.appcompat.widget.Toolbar
 import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.fragment.app.Fragment
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.AssignMasterKeyDialogFragment
 import com.kunzisoft.keepass.activities.dialogs.PasswordEncodingDialogFragment
+import com.kunzisoft.keepass.activities.helpers.ExternalFileHelper
 import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.activities.lock.resetAppTimeoutWhenViewFocusedOrChanged
+import com.kunzisoft.keepass.activities.stylish.Stylish
 import com.kunzisoft.keepass.database.element.Database
 import com.kunzisoft.keepass.model.MainCredential
 import com.kunzisoft.keepass.services.DatabaseTaskNotificationService
 import com.kunzisoft.keepass.timeout.TimeoutHelper
 import com.kunzisoft.keepass.view.showActionErrorIfNeeded
+import java.util.*
 
 open class SettingsActivity
     : LockingActivity(),
@@ -48,6 +53,8 @@ open class SettingsActivity
         PasswordEncodingDialogFragment.Listener {
 
     private var backupManager: BackupManager? = null
+    private var mExternalFileHelper: ExternalFileHelper? = null
+    private var appPropertiesFileCreationRequestCode: Int? = null
 
     private var coordinatorLayout: CoordinatorLayout? = null
     private var toolbar: Toolbar? = null
@@ -70,6 +77,8 @@ open class SettingsActivity
         coordinatorLayout = findViewById(R.id.toolbar_coordinator)
         toolbar = findViewById(R.id.toolbar)
 
+        mExternalFileHelper = ExternalFileHelper(this)
+
         if (savedInstanceState?.getString(TITLE_KEY).isNullOrEmpty())
             toolbar?.setTitle(R.string.settings)
         else
@@ -216,6 +225,13 @@ open class SettingsActivity
         hideOrShowLockButton(key)
     }
 
+    fun relaunchCurrentScreen() {
+        keepCurrentScreen()
+        startActivity(intent)
+        finish()
+        overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out)
+    }
+
     /**
      * To keep the current screen when activity is reloaded
       */
@@ -235,6 +251,58 @@ open class SettingsActivity
             replaceFragment(key, reload)
     }
 
+    fun importAppProperties() {
+        mExternalFileHelper?.openDocument()
+    }
+
+    fun exportAppProperties() {
+        appPropertiesFileCreationRequestCode = mExternalFileHelper?.createDocument(getString(R.string.app_properties_file_name))
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+
+        // Import app properties result
+        try {
+            mExternalFileHelper?.onOpenDocumentResult(requestCode, resultCode, data) { selectedfileUri ->
+                selectedfileUri?.let { uri ->
+                    val appProperties = Properties()
+                    contentResolver?.openInputStream(uri)?.use { inputStream ->
+                        appProperties.load(inputStream)
+                    }
+                    PreferencesUtil.setAppProperties(this, appProperties)
+
+                    // Restart the current activity
+                    relaunchCurrentScreen()
+                    Toast.makeText(this, R.string.success_import_app_properties, Toast.LENGTH_LONG).show()
+                }
+            }
+        } catch (e: Exception) {
+            Toast.makeText(this, R.string.error_import_app_properties, Toast.LENGTH_LONG).show()
+            Log.e(TAG, "Unable to import app properties", e)
+        }
+
+        // Export app properties result
+        try {
+            if (requestCode == appPropertiesFileCreationRequestCode) {
+                mExternalFileHelper?.onCreateDocumentResult(requestCode, resultCode, data) { createdFileUri ->
+                    createdFileUri?.let { uri ->
+                        contentResolver?.openOutputStream(uri)?.use { outputStream ->
+                            PreferencesUtil
+                                    .getAppProperties(this)
+                                    .store(outputStream, getString(R.string.description_app_properties))
+                        }
+                        Toast.makeText(this, R.string.success_export_app_properties, Toast.LENGTH_LONG).show()
+                    }
+                }
+                appPropertiesFileCreationRequestCode = null
+            }
+        } catch (e: Exception) {
+            Toast.makeText(this, R.string.error_export_app_properties, Toast.LENGTH_LONG).show()
+            Log.e(LockingActivity.TAG, "Unable to export app properties", e)
+        }
+    }
+
     override fun onSaveInstanceState(outState: Bundle) {
         super.onSaveInstanceState(outState)
 
@@ -244,6 +312,8 @@ open class SettingsActivity
 
     companion object {
 
+        private val TAG = SettingsActivity::class.java.name
+
         private const val SHOW_LOCK = "SHOW_LOCK"
         private const val TITLE_KEY = "TITLE_KEY"
         private const val TAG_NESTED = "TAG_NESTED"

app/src/main/java/com/kunzisoft/keepass/settings/preference/DurationDialogPreference.kt

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *     
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.settings.preference
+
+import android.content.Context
+import android.content.res.TypedArray
+import android.util.AttributeSet
+import androidx.preference.DialogPreference
+import com.kunzisoft.keepass.R
+
+class DurationDialogPreference @JvmOverloads constructor(context: Context,
+                                                         attrs: AttributeSet? = null,
+                                                         defStyleAttr: Int = R.attr.dialogPreferenceStyle,
+                                                         defStyleRes: Int = defStyleAttr)
+    : DialogPreference(context, attrs, defStyleAttr, defStyleRes) {
+
+    private var mDuration: Long = 0L
+
+    override fun getDialogLayoutResource(): Int {
+        return R.layout.pref_dialog_duration
+    }
+
+    /**
+     * Get current duration of preference
+     */
+    fun getDuration(): Long {
+        return if (mDuration >= 0) mDuration else -1
+    }
+
+    /**
+     * Assign [duration] of preference
+     */
+    fun setDuration(duration: Long) {
+        persistString(duration.toString())
+        notifyChanged()
+    }
+
+    override fun onSetInitialValue(restorePersistedValue: Boolean, defaultValue: Any?) {
+        if (restorePersistedValue) {
+            mDuration = getPersistedString(mDuration.toString()).toLongOrNull() ?: mDuration
+        } else {
+            mDuration = defaultValue?.toString()?.toLongOrNull() ?: mDuration
+            persistString(mDuration.toString())
+        }
+    }
+
+    override fun onGetDefaultValue(a: TypedArray?, index: Int): Any {
+        return try {
+            a?.getString(index)?.toLongOrNull() ?: mDuration
+        } catch (e: Exception) {
+            mDuration
+        }
+    }
+
+    // Was previously a string
+    override fun persistString(value: String?): Boolean {
+        mDuration = value?.toLongOrNull() ?: mDuration
+        return super.persistString(value)
+    }
+}

app/src/main/java/com/kunzisoft/keepass/settings/preferencedialogfragment/DurationDialogFragmentCompat.kt

@@ -0,0 +1,180 @@
+/*
+ * Copyright 2021 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.settings.preferencedialogfragment
+
+import android.os.Bundle
+import android.view.View
+import android.widget.NumberPicker
+import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.settings.preference.DurationDialogPreference
+
+
+class DurationDialogFragmentCompat : InputPreferenceDialogFragmentCompat() {
+
+    private var mEnabled = true
+    private var mDays = 0
+    private var mHours = 0
+    private var mMinutes = 0
+    private var mSeconds = 0
+
+    private var daysNumberPicker: NumberPicker? = null
+    private var hoursNumberPicker: NumberPicker? = null
+    private var minutesNumberPicker: NumberPicker? = null
+    private var secondsNumberPicker: NumberPicker? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // To get items from saved instance state
+        if (savedInstanceState != null
+                && savedInstanceState.containsKey(ENABLE_KEY)
+                && savedInstanceState.containsKey(DAYS_KEY)
+                && savedInstanceState.containsKey(HOURS_KEY)
+                && savedInstanceState.containsKey(MINUTES_KEY)
+                && savedInstanceState.containsKey(SECONDS_KEY)) {
+            mEnabled = savedInstanceState.getBoolean(ENABLE_KEY)
+            mDays = savedInstanceState.getInt(DAYS_KEY)
+            mHours = savedInstanceState.getInt(HOURS_KEY)
+            mMinutes = savedInstanceState.getInt(MINUTES_KEY)
+            mSeconds = savedInstanceState.getInt(SECONDS_KEY)
+        } else {
+            val currentPreference = preference
+            if (currentPreference is DurationDialogPreference) {
+                durationToDaysHoursMinutesSeconds(currentPreference.getDuration())
+            }
+        }
+    }
+
+    private fun durationToDaysHoursMinutesSeconds(duration: Long) {
+        if (duration < 0) {
+            mDays = 0
+            mHours = 0
+            mMinutes = 0
+            mSeconds = 0
+        } else {
+            mDays = (duration / (24L * 60L * 60L * 1000L)).toInt()
+            val daysMilliseconds = mDays * 24L * 60L * 60L * 1000L
+            mHours = ((duration - daysMilliseconds) / (60L * 60L * 1000L)).toInt()
+            val hoursMilliseconds = mHours * 60L * 60L * 1000L
+            mMinutes = ((duration - daysMilliseconds - hoursMilliseconds) / (60L * 1000L)).toInt()
+            val minutesMilliseconds = mMinutes * 60L * 1000L
+            mSeconds = ((duration - daysMilliseconds - hoursMilliseconds - minutesMilliseconds) / (1000L)).toInt()
+        }
+    }
+
+    private fun assignValuesInViews() {
+        daysNumberPicker?.value = mDays
+        hoursNumberPicker?.value = mHours
+        minutesNumberPicker?.value = mMinutes
+        secondsNumberPicker?.value = mSeconds
+    }
+
+    override fun onBindDialogView(view: View) {
+        super.onBindDialogView(view)
+
+        daysNumberPicker = view.findViewById<NumberPicker>(R.id.days_picker).apply {
+            minValue = 0
+            maxValue = 364
+            setOnValueChangedListener { _, _, newVal ->
+                mDays = newVal
+                activateSwitch()
+            }
+        }
+
+        hoursNumberPicker = view.findViewById<NumberPicker>(R.id.hours_picker).apply {
+            minValue = 0
+            maxValue = 23
+            setOnValueChangedListener { _, _, newVal ->
+                mHours = newVal
+                activateSwitch()
+            }
+        }
+
+        minutesNumberPicker = view.findViewById<NumberPicker>(R.id.minutes_picker).apply {
+            minValue = 0
+            maxValue = 59
+            setOnValueChangedListener { _, _, newVal ->
+                mMinutes = newVal
+                activateSwitch()
+            }
+        }
+
+        secondsNumberPicker = view.findViewById<NumberPicker>(R.id.seconds_picker).apply {
+            minValue = 0
+            maxValue = 59
+            setOnValueChangedListener { _, _, newVal ->
+                mSeconds = newVal
+                activateSwitch()
+            }
+        }
+
+        setSwitchAction({ isChecked ->
+            mEnabled = isChecked
+        }, mDays + mHours + mMinutes + mSeconds > 0)
+
+        assignValuesInViews()
+    }
+
+    private fun buildDuration(): Long {
+        return if (mEnabled) {
+            mDays * 24L * 60L * 60L * 1000L +
+                    mHours * 60L * 60L * 1000L +
+                    mMinutes * 60L * 1000L +
+                    mSeconds * 1000L
+        } else {
+            -1
+        }
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putBoolean(ENABLE_KEY, mEnabled)
+        outState.putInt(DAYS_KEY, mDays)
+        outState.putInt(HOURS_KEY, mHours)
+        outState.putInt(MINUTES_KEY, mMinutes)
+        outState.putInt(SECONDS_KEY, mSeconds)
+    }
+
+    override fun onDialogClosed(positiveResult: Boolean) {
+        if (positiveResult) {
+            val currentPreference = preference
+            if (currentPreference is DurationDialogPreference) {
+                currentPreference.setDuration(buildDuration())
+            }
+        }
+    }
+
+    companion object {
+        private const val ENABLE_KEY = "ENABLE_KEY"
+        private const val DAYS_KEY = "DAYS_KEY"
+        private const val HOURS_KEY = "HOURS_KEY"
+        private const val MINUTES_KEY = "MINUTES_KEY"
+        private const val SECONDS_KEY = "SECONDS_KEY"
+
+        fun newInstance(key: String): DurationDialogFragmentCompat {
+            val fragment = DurationDialogFragmentCompat()
+            val bundle = Bundle(1)
+            bundle.putString(ARG_KEY, key)
+            fragment.arguments = bundle
+
+            return fragment
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/settings/preferencedialogfragment/InputPreferenceDialogFragmentCompat.kt

@@ -154,4 +154,14 @@ abstract class InputPreferenceDialogFragmentCompat : PreferenceDialogFragmentCom
             onCheckedChange?.invoke(isChecked)
         }
     }
+
+    fun activateSwitch() {
+        if (switchElementView?.isChecked != true)
+            switchElementView?.isChecked = true
+    }
+
+    fun deactivateSwitch() {
+        if (switchElementView?.isChecked == true)
+            switchElementView?.isChecked = false
+    }
 }

app/src/main/java/com/kunzisoft/keepass/utils/ExternalFileManager.kt

@@ -1,86 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePassDX.
- *
- *  KeePassDX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePassDX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.utils
-
-import android.annotation.SuppressLint
-import android.app.Activity
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.net.Uri
-import android.os.Build
-import androidx.fragment.app.FragmentActivity
-import com.kunzisoft.keepass.activities.dialogs.FileManagerDialogFragment
-
-
-private var CREATE_FILE_REQUEST_CODE_DEFAULT = 3853
-private var fileRequestCodes = ArrayList<Int>()
-
-fun getUnusedCreateFileRequestCode(): Int {
-    val newCreateFileRequestCode = CREATE_FILE_REQUEST_CODE_DEFAULT++
-    fileRequestCodes.add(newCreateFileRequestCode)
-    return newCreateFileRequestCode
-}
-
-@SuppressLint("InlinedApi")
-fun allowCreateDocumentByStorageAccessFramework(packageManager: PackageManager): Boolean {
-    return when {
-        // To check if a custom file manager can manage the ACTION_CREATE_DOCUMENT
-        Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT -> {
-            packageManager.queryIntentActivities(Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
-                addCategory(Intent.CATEGORY_OPENABLE)
-                type = "application/x-keepass"
-            }, PackageManager.MATCH_DEFAULT_ONLY).isNotEmpty()
-        }
-        else -> true
-    }
-}
-
-fun createDocument(activity: FragmentActivity,
-                   titleString: String,
-                   typeString: String = "application/octet-stream"): Int? {
-
-    val idCode = getUnusedCreateFileRequestCode()
-
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
-        try {
-            activity.startActivityForResult(Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
-                addCategory(Intent.CATEGORY_OPENABLE)
-                type = typeString
-                putExtra(Intent.EXTRA_TITLE, titleString)
-            }, idCode)
-            return idCode
-        } catch (e: Exception) {
-            FileManagerDialogFragment().show(activity.supportFragmentManager, "browserDialog")
-        }
-    } else {
-        FileManagerDialogFragment().show(activity.supportFragmentManager, "browserDialog")
-    }
-
-    return null
-}
-
-fun onCreateDocumentResult(requestCode: Int, resultCode: Int, data: Intent?,
-                           action: (fileCreated: Uri?)->Unit) {
-    // Retrieve the created URI from the file manager
-    if (fileRequestCodes.contains(requestCode) && resultCode == Activity.RESULT_OK) {
-        action.invoke(data?.data)
-        fileRequestCodes.remove(requestCode)
-    }
-}

app/src/main/java/com/kunzisoft/keepass/utils/ParcelableUtil.kt

@@ -42,8 +42,12 @@ object ParcelableUtil {
         val size = parcel.readInt()
         val map = HashMap<K, V>(size)
         for (i in 0 until size) {
-            val key: K? = kClass.cast(parcel.readParcelable(kClass.classLoader))
-            val value: V? = vClass.cast(parcel.readParcelable(vClass.classLoader))
+            val key: K? = try {
+                parcel.readParcelable(kClass.classLoader)
+            } catch (e: Exception) { null }
+            val value: V? = try {
+                parcel.readParcelable(vClass.classLoader)
+            } catch (e: Exception) { null }
             if (key != null && value != null)
                 map[key] = value
         }
@@ -52,7 +56,7 @@ object ParcelableUtil {
 
     // For writing map with string key to a Parcel
     fun <V : Parcelable> writeStringParcelableMap(
-            parcel: Parcel, flags: Int, map: LinkedHashMap<String, V>) {
+            parcel: Parcel, flags: Int, map: HashMap<String, V>) {
         parcel.writeInt(map.size)
         for ((key, value) in map) {
             parcel.writeString(key)
@@ -76,7 +80,9 @@ object ParcelableUtil {
         val map = LinkedHashMap<String, V>(size)
         for (i in 0 until size) {
             val key: String? = parcel.readString()
-            val value: V? = vClass.cast(parcel.readParcelable(vClass.classLoader))
+            val value: V? = try {
+                parcel.readParcelable(vClass.classLoader)
+            } catch (e: Exception) { null }
             if (key != null && value != null)
                 map[key] = value
         }

app/src/main/java/com/kunzisoft/keepass/utils/StringUtil.kt

@@ -1,5 +1,7 @@
 package com.kunzisoft.keepass.utils
 
+import java.text.Normalizer
+
 object StringUtil {
 
     fun String.removeLineChars(): String {

app/src/main/java/com/kunzisoft/keepass/utils/UnsignedInt.kt

@@ -19,8 +19,6 @@
  */
 package com.kunzisoft.keepass.utils
 
-import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX
-
 class UnsignedInt(private var unsignedValue: Int) {
 
     constructor(unsignedValue: UnsignedInt) : this(unsignedValue.toKotlinInt())

app/src/main/java/com/kunzisoft/keepass/utils/UriUtil.kt

@@ -38,16 +38,26 @@ object UriUtil {
     fun getFileData(context: Context, fileUri: Uri?): DocumentFile? {
         if (fileUri == null)
             return null
-        return when {
-            isFileScheme(fileUri) -> {
-                fileUri.path?.let {
-                    File(it).let { file ->
-                        return DocumentFile.fromFile(file)
+        return try {
+            when {
+                isFileScheme(fileUri) -> {
+                    fileUri.path?.let {
+                        File(it).let { file ->
+                            return DocumentFile.fromFile(file)
+                        }
                     }
                 }
+                isContentScheme(fileUri) -> {
+                    DocumentFile.fromSingleUri(context, fileUri)
+                }
+                else -> {
+                    Log.e("FileData", "Content scheme not known")
+                    null
+                }
             }
-            isContentScheme(fileUri) -> DocumentFile.fromSingleUri(context, fileUri)
-            else -> null
+        } catch (e: Exception) {
+            Log.e("FileData", "Unable to get document file", e)
+            null
         }
     }
 

app/src/main/java/com/kunzisoft/keepass/utils/UuidUtil.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.utils;
+
+import androidx.annotation.Nullable;
+
+import java.util.UUID;
+
+import static com.kunzisoft.keepass.utils.StreamBytesUtilsKt.uuidTo16Bytes;
+
+public class UuidUtil {
+
+    public static @Nullable String toHexString(@Nullable UUID uuid) {
+        if (uuid == null) { return null; }
+        try {
+            byte[] buf = uuidTo16Bytes(uuid);
+
+            int len = buf.length;
+            if (len == 0) {
+                return "";
+            }
+
+            StringBuilder sb = new StringBuilder();
+
+            short bt;
+            char high, low;
+            for (byte b : buf) {
+                bt = (short) (b & 0xFF);
+                high = (char) (bt >>> 4);
+                low = (char) (bt & 0x0F);
+                sb.append(byteToChar(high));
+                sb.append(byteToChar(low));
+            }
+
+            return sb.toString();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    public static @Nullable UUID fromHexString(@Nullable String hexString) {
+        if (hexString == null)
+            return null;
+
+        if (hexString.length() != 32)
+            return null;
+
+        char[] charArray = hexString.toLowerCase().toCharArray();
+        char[] leastSignificantChars = new char[16];
+        char[] mostSignificantChars = new char[16];
+
+        for (int i = 31; i >= 0; i = i-2) {
+            if (i >= 16) {
+                mostSignificantChars[32-i] = charArray[i];
+                mostSignificantChars[31-i] = charArray[i-1];
+            } else {
+                leastSignificantChars[16-i] = charArray[i];
+                leastSignificantChars[15-i] = charArray[i-1];
+            }
+        }
+        StringBuilder standardUUIDString = new StringBuilder();
+        standardUUIDString.append(leastSignificantChars);
+        standardUUIDString.append(mostSignificantChars);
+        standardUUIDString.insert(8, '-');
+        standardUUIDString.insert(13, '-');
+        standardUUIDString.insert(18, '-');
+        standardUUIDString.insert(23, '-');
+        try {
+            return UUID.fromString(standardUUIDString.toString());
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    // Use short to represent unsigned byte
+    private static char byteToChar(char bt) {
+        if (bt >= 10) {
+            return (char)('A' + bt - 10);
+        }
+        else {
+            return (char)('0' + bt);
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/view/EntryContentsView.kt

@@ -39,7 +39,7 @@ import com.kunzisoft.keepass.database.element.Database
 import com.kunzisoft.keepass.database.element.DateInstant
 import com.kunzisoft.keepass.database.element.Entry
 import com.kunzisoft.keepass.database.element.security.ProtectedString
-import com.kunzisoft.keepass.database.search.UuidUtil
+import com.kunzisoft.keepass.utils.UuidUtil
 import com.kunzisoft.keepass.model.EntryAttachmentState
 import com.kunzisoft.keepass.model.StreamDirection
 import com.kunzisoft.keepass.otp.OtpElement

app/src/main/java/com/kunzisoft/keepass/view/EntryField.kt

@@ -46,10 +46,10 @@ class EntryField @JvmOverloads constructor(context: Context,
 
     var hiddenProtectedValue: Boolean
         get() {
-            return showButtonView.isSelected
+            return !showButtonView.isSelected
         }
         set(value) {
-            showButtonView.isSelected = !value
+            showButtonView.isSelected = value
             changeProtectedValueParameters()
         }
 
@@ -101,7 +101,7 @@ class EntryField @JvmOverloads constructor(context: Context,
             } else {
                 setTextIsSelectable(true)
             }
-            applyHiddenStyle(isProtected && !showButtonView.isSelected)
+            applyHiddenStyle(isProtected && showButtonView.isSelected)
             if (!isProtected) linkify()
         }
     }

app/src/main/java/com/kunzisoft/keepass/view/KeyFileSelectionView.kt

@@ -6,9 +6,9 @@ import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.widget.TextView
 import androidx.constraintlayout.widget.ConstraintLayout
-import androidx.documentfile.provider.DocumentFile
 import com.google.android.material.textfield.TextInputLayout
 import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.utils.UriUtil
 
 class KeyFileSelectionView @JvmOverloads constructor(context: Context,
                                                      attrs: AttributeSet? = null,
@@ -51,7 +51,7 @@ class KeyFileSelectionView @JvmOverloads constructor(context: Context,
         set(value) {
             mUri = value
             keyFileNameView.text = value?.let {
-                DocumentFile.fromSingleUri(context, value)?.name ?: value.path
+                UriUtil.getFileData(context, value)?.name ?: value.path
             } ?: ""
         }
 }

app/src/main/java/com/kunzisoft/keepass/viewmodels/DatabaseFilesViewModel.kt

@@ -50,14 +50,18 @@ class DatabaseFilesViewModel(application: Application) : AndroidViewModel(applic
         ).execute()
     }
 
+    private fun getDatabaseFilesLoadedValue(): DatabaseFileData {
+        var newValue = databaseFilesLoaded.value
+        if (newValue == null) {
+            newValue = DatabaseFileData()
+        }
+        return newValue
+    }
+
     fun loadListOfDatabases() {
         checkDefaultDatabase()
         mFileDatabaseHistoryAction?.getDatabaseFileList { databaseFileListRetrieved ->
-            var newValue = databaseFilesLoaded.value
-            if (newValue == null) {
-                newValue = DatabaseFileData()
-            }
-            newValue.apply {
+            databaseFilesLoaded.value = getDatabaseFilesLoadedValue().apply {
                 databaseFileAction = DatabaseFileAction.NONE
                 databaseFileToActivate = null
                 databaseFileList.apply {
@@ -65,14 +69,13 @@ class DatabaseFilesViewModel(application: Application) : AndroidViewModel(applic
                     addAll(databaseFileListRetrieved)
                 }
             }
-            databaseFilesLoaded.value = newValue
         }
     }
 
     fun addDatabaseFile(databaseUri: Uri, keyFileUri: Uri?) {
         mFileDatabaseHistoryAction?.addOrUpdateDatabaseUri(databaseUri, keyFileUri) { databaseFileAdded ->
             databaseFileAdded?.let { _ ->
-                databaseFilesLoaded.value = databaseFilesLoaded.value?.apply {
+                databaseFilesLoaded.value = getDatabaseFilesLoadedValue().apply {
                     this.databaseFileAction = DatabaseFileAction.ADD
                     this.databaseFileList.add(databaseFileAdded)
                     this.databaseFileToActivate = databaseFileAdded
@@ -84,7 +87,7 @@ class DatabaseFilesViewModel(application: Application) : AndroidViewModel(applic
     fun updateDatabaseFile(databaseFileToUpdate: DatabaseFile) {
         mFileDatabaseHistoryAction?.addOrUpdateDatabaseFile(databaseFileToUpdate) { databaseFileUpdated ->
             databaseFileUpdated?.let { _ ->
-                databaseFilesLoaded.value = databaseFilesLoaded.value?.apply {
+                databaseFilesLoaded.value = getDatabaseFilesLoadedValue().apply {
                     this.databaseFileAction = DatabaseFileAction.UPDATE
                     this.databaseFileList
                             .find { it.databaseUri == databaseFileUpdated.databaseUri }
@@ -104,7 +107,7 @@ class DatabaseFilesViewModel(application: Application) : AndroidViewModel(applic
     fun deleteDatabaseFile(databaseFileToDelete: DatabaseFile) {
         mFileDatabaseHistoryAction?.deleteDatabaseFile(databaseFileToDelete) { databaseFileDeleted ->
             databaseFileDeleted?.let { _ ->
-                databaseFilesLoaded.value = databaseFilesLoaded.value?.apply {
+                databaseFilesLoaded.value = getDatabaseFilesLoadedValue().apply {
                     databaseFileAction = DatabaseFileAction.DELETE
                     databaseFileToActivate = databaseFileDeleted
                     databaseFileList.remove(databaseFileDeleted)

app/src/main/res/drawable/ic_day_white_24dp.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FFFFFF" android:pathData="M19,3h-1L18,1h-2v2L8,3L8,1L6,1v2L5,3c-1.11,0 -1.99,0.9 -1.99,2L3,19c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM19,19L5,19L5,8h14v11zM7,10h5v5L7,15z"/>
+</vector>

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

@@ -17,17 +17,42 @@
   You should have received a copy of the GNU General Public License
   along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
 -->
-<FrameLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/icon_container"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
+    android:layout_height="80dp"
     android:background="@drawable/background_item_selection">
     <androidx.appcompat.widget.AppCompatImageView
         android:id="@+id/icon_image"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/icon_name"
         android:layout_gravity="center"
-        android:layout_margin="16dp">
-    </androidx.appcompat.widget.AppCompatImageView>
-</FrameLayout>
+        android:layout_marginStart="16dp"
+        android:layout_marginLeft="16dp"
+        android:layout_marginEnd="16dp"
+        android:layout_marginRight="16dp" />
+    <androidx.appcompat.widget.AppCompatTextView
+        android:id="@+id/icon_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintTop_toBottomOf="@+id/icon_image"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_gravity="center"
+        android:gravity="center"
+        android:maxLines="3"
+        android:paddingStart="4dp"
+        android:paddingLeft="4dp"
+        android:paddingEnd="4dp"
+        android:paddingRight="4dp" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,149 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2019 Jeremy Jamet / Kunzisoft.
+     
+ This file is part of KeePassDX.
+
+  KeePassDX is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  KeePassDX is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+-->
+<androidx.constraintlayout.widget.ConstraintLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:tools="http://schemas.android.com/tools"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	android:id="@+id/edit"
+	android:orientation="vertical"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	android:importantForAutofill="noExcludeDescendants"
+	tools:targetApi="o">
+    <androidx.appcompat.widget.AppCompatTextView
+		android:id="@+id/explanation_text"
+		android:layout_height="wrap_content"
+		android:layout_width="0dp"
+		android:gravity="center"
+        android:layout_marginBottom="8dp"
+		app:layout_constraintTop_toTopOf="parent"
+		app:layout_constraintStart_toStartOf="parent"
+		app:layout_constraintLeft_toLeftOf="parent"
+		app:layout_constraintEnd_toEndOf="parent"
+		app:layout_constraintRight_toRightOf="parent"
+        style="@style/KeepassDXStyle.TextAppearance.SmallTitle"/>
+
+	<androidx.appcompat.widget.SwitchCompat
+		android:id="@+id/switch_element"
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:text="@string/enable"
+		android:layout_marginStart="20dp"
+		android:layout_marginLeft="20dp"
+		android:layout_marginEnd="20dp"
+		android:layout_marginRight="20dp"
+		app:layout_constraintEnd_toEndOf="parent"
+		app:layout_constraintRight_toRightOf="parent"
+		app:layout_constraintTop_toBottomOf="@+id/explanation_text" />
+
+	<androidx.constraintlayout.widget.ConstraintLayout
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		app:layout_constraintTop_toBottomOf="@+id/switch_element">
+
+		<LinearLayout
+			android:id="@+id/duration_days_picker"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:orientation="horizontal"
+			app:layout_constraintTop_toTopOf="parent"
+			app:layout_constraintStart_toStartOf="parent"
+			app:layout_constraintLeft_toLeftOf="parent"
+			app:layout_constraintEnd_toStartOf="@+id/duration_hours_picker"
+			app:layout_constraintRight_toLeftOf="@+id/duration_hours_picker">
+			<NumberPicker
+				android:id="@+id/days_picker"
+				android:scrollbarFadeDuration="0"
+				android:scrollbarDefaultDelayBeforeFade="0"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"/>
+			<ImageView
+				android:layout_width="wrap_content"
+				android:layout_height="match_parent"
+				android:gravity="center"
+				android:src="@drawable/ic_day_white_24dp"
+				app:tint="?android:attr/textColor"
+				android:contentDescription="@string/digits" />
+		</LinearLayout>
+
+		<LinearLayout
+			android:id="@+id/duration_hours_picker"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:orientation="horizontal"
+			tools:ignore="HardcodedText"
+			app:layout_constraintTop_toTopOf="parent"
+			app:layout_constraintStart_toEndOf="@+id/duration_days_picker"
+			app:layout_constraintLeft_toRightOf="@+id/duration_days_picker"
+			app:layout_constraintEnd_toStartOf="@+id/duration_time_picker"
+			app:layout_constraintRight_toLeftOf="@+id/duration_time_picker">
+			<NumberPicker
+				android:id="@+id/hours_picker"
+				android:scrollbarFadeDuration="0"
+				android:scrollbarDefaultDelayBeforeFade="0"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"/>
+			<TextView
+				android:layout_width="wrap_content"
+				android:layout_height="match_parent"
+				android:gravity="center"
+				android:textStyle="bold"
+				android:text=":" />
+		</LinearLayout>
+
+		<LinearLayout
+			android:id="@+id/duration_time_picker"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:orientation="horizontal"
+			tools:ignore="HardcodedText"
+			app:layout_constraintTop_toTopOf="parent"
+			app:layout_constraintStart_toEndOf="@+id/duration_hours_picker"
+			app:layout_constraintLeft_toRightOf="@+id/duration_hours_picker"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintRight_toRightOf="parent">
+			<NumberPicker
+				android:id="@+id/minutes_picker"
+				android:scrollbarFadeDuration="0"
+				android:scrollbarDefaultDelayBeforeFade="0"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"/>
+			<TextView
+				android:layout_width="wrap_content"
+				android:layout_height="match_parent"
+				android:gravity="center"
+				android:textSize="28sp"
+				android:text="'"/>
+			<NumberPicker
+				android:id="@+id/seconds_picker"
+				android:scrollbarFadeDuration="0"
+				android:scrollbarDefaultDelayBeforeFade="0"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"/>
+			<TextView
+				android:layout_width="wrap_content"
+				android:layout_height="match_parent"
+				android:gravity="center"
+				android:textSize="28sp"
+				android:text="''"/>
+		</LinearLayout>
+
+	</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -137,7 +137,6 @@
     <string name="error_string_key">يجب أن يكون لكل سلسلة اسم حقل.</string>
     <string name="error_wrong_length">أدخل عددًا صحيحًا موجبًا في حقل «الطول».</string>
     <string name="error_autofill_enable_service">تعذر تمكين خدمة الملء التلقائي.</string>
-    <string name="error_move_folder_in_itself">لا يمكن نقل مجموعة إلى نفسها.</string>
     <string name="file_not_found_content">تعذر إيجاد الملف. جرِّب فتحه من متصفح ملفات.</string>
     <string name="file_browser">مدير الملفات</string>
     <string name="invalid_credentials">تعذر قراءة الإعتمادات.</string>

app/src/main/res/values-b+sr+Latn/strings.xml

@@ -85,7 +85,6 @@
     <string name="error_copy_group_here">Ovde ne možete kopirati grupu.</string>
     <string name="error_copy_entry_here">Ovde ne možete kopirati unos.</string>
     <string name="error_move_entry_here">Ovde ne možete premestiti unos.</string>
-    <string name="error_move_folder_in_itself">Ne možete premestiti grupu u samu sebe.</string>
     <string name="error_autofill_enable_service">Nije moguće omogućiti uslugu automatskog popunjavanja.</string>
     <string name="error_wrong_length">Unesite pozitivan ceo broj u polje \"Dužina\".</string>
     <string name="error_label_exists">Ova oznaka već postoji.</string>