Kdbx 4.1

.github/workflows/dart.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dart-lang/setup-dart@v1
       with:
             sdk: ${{ matrix.sdk }}

analysis_options.yaml

@@ -11,6 +11,7 @@ analyzer:
     missing_return: warning
     # allow having TODOs in the code
     todo: ignore
+    invalid_use_of_protected_member: error
   language:
     strict-casts: true
     strict-raw-types: true

dart_test.yaml

@@ -1,3 +1,7 @@
 tags:
   kdbx3: {}
   kdbx4: {}
+
+# macOs github runners are slower
+on_platform:
+  mac-os: {timeout: 2x}

lib/src/kdbx_custom_data.dart

@@ -3,12 +3,12 @@ import 'package:kdbx/src/kdbx_object.dart';
 import 'package:kdbx/src/kdbx_xml.dart';
 import 'package:xml/xml.dart' as xml;
 
-class KdbxCustomData extends KdbxNode {
-  KdbxCustomData.create()
+class KdbxObjectCustomData extends KdbxNode {
+  KdbxObjectCustomData.create()
       : _data = {},
-        super.create(TAG_NAME);
+        super.create(KdbxXml.NODE_CUSTOM_DATA);
 
-  KdbxCustomData.read(xml.XmlElement node)
+  KdbxObjectCustomData.read(xml.XmlElement node)
       : _data = Map.fromEntries(
             node.findElements(KdbxXml.NODE_CUSTOM_DATA_ITEM).map((el) {
           final key = el.singleTextNode(KdbxXml.NODE_KEY);
@@ -17,8 +17,6 @@ class KdbxCustomData extends KdbxNode {
         })),
         super.read(node);
 
-  static const String TAG_NAME = KdbxXml.NODE_CUSTOM_DATA;
-
   final Map<String, String> _data;
 
   Iterable<MapEntry<String, String>> get entries => _data.entries;
@@ -29,6 +27,7 @@ class KdbxCustomData extends KdbxNode {
   }
 
   bool containsKey(String key) => _data.containsKey(key);
+  String? remove(String key) => modify(() => _data.remove(key));
 
   @override
   xml.XmlElement toXml() {
@@ -44,7 +43,76 @@ class KdbxCustomData extends KdbxNode {
     return el;
   }
 
-  void overwriteFrom(KdbxCustomData other) {
+  void overwriteFrom(KdbxObjectCustomData other) {
+    _data.clear();
+    _data.addAll(other._data);
+  }
+}
+
+typedef KdbxMetaCustomDataItem = ({
+  String value,
+  DateTime? lastModified,
+});
+
+class KdbxMetaCustomData extends KdbxNode {
+  KdbxMetaCustomData.create()
+      : _data = {},
+        super.create(KdbxXml.NODE_CUSTOM_DATA);
+
+  KdbxMetaCustomData.read(xml.XmlElement node)
+      : _data = Map.fromEntries(
+            node.findElements(KdbxXml.NODE_CUSTOM_DATA_ITEM).map((el) {
+          final key = el.singleTextNode(KdbxXml.NODE_KEY);
+          final value = el.singleTextNode(KdbxXml.NODE_VALUE);
+          final lastModified =
+              el.singleElement(KdbxXml.NODE_LAST_MODIFICATION_TIME)?.innerText;
+          return MapEntry(key, (
+            value: value,
+            lastModified: lastModified != null
+                ? DateTimeUtils.fromBase64(lastModified)
+                : null
+          ));
+        })),
+        super.read(node);
+
+  final Map<String, KdbxMetaCustomDataItem> _data;
+
+  Iterable<MapEntry<String, KdbxMetaCustomDataItem>> get entries =>
+      _data.entries;
+
+  KdbxMetaCustomDataItem? operator [](String key) => _data[key];
+  void operator []=(String key, KdbxMetaCustomDataItem value) {
+    modify(() => _data[key] = value);
+  }
+
+  bool containsKey(String key) => _data.containsKey(key);
+  KdbxMetaCustomDataItem? remove(String key) => modify(() => _data.remove(key));
+
+  @override
+  xml.XmlElement toXml() {
+    final el = super.toXml();
+    el.children.clear();
+    el.children.addAll(
+      _data.entries.map((e) {
+        //TODO: We don't have any context here so have to output everything regardless
+        // of intended kdbx version. Maybe we can improve that one day to allow
+        // safer output of earlier kdbx versions?
+        final d = e.value.lastModified != null
+            ? DateTimeUtils.toBase64(e.value.lastModified!)
+            : null;
+
+        return XmlUtils.createNode(KdbxXml.NODE_CUSTOM_DATA_ITEM, [
+          XmlUtils.createTextNode(KdbxXml.NODE_KEY, e.key),
+          XmlUtils.createTextNode(KdbxXml.NODE_VALUE, e.value.value),
+          if (d != null)
+            XmlUtils.createTextNode(KdbxXml.NODE_LAST_MODIFICATION_TIME, d),
+        ]);
+      }),
+    );
+    return el;
+  }
+
+  void overwriteFrom(KdbxMetaCustomData other) {
     _data.clear();
     _data.addAll(other._data);
   }

lib/src/kdbx_entry.dart

@@ -389,7 +389,7 @@ extension KdbxEntryInternal on KdbxEntry {
         foregroundColor,
         backgroundColor,
         overrideURL,
-        tags,
+        qualityCheck,
       ];
 
   void _overwriteFrom(
@@ -426,6 +426,8 @@ extension KdbxEntryInternal on KdbxEntry {
         ));
     _binaries.clear();
     _binaries.addAll(newBinaries);
+    // Dart doesn't know this is actually OK since it's an extension to a subclass
+    // ignore: invalid_use_of_protected_member
     customData.overwriteFrom(other.customData);
     times.overwriteFrom(other.times);
     if (includeHistory) {
@@ -456,8 +458,7 @@ class KdbxEntry extends KdbxObject {
     KdbxFile file,
     KdbxGroup parent, {
     this.isHistoryEntry = false,
-  })  : customData = KdbxCustomData.create(),
-        history = [],
+  })  : history = [],
         super.create(file.ctx, file, 'Entry', parent) {
     icon.set(KdbxIcon.Key);
     _browserSettings = BrowserEntrySettings(
@@ -467,11 +468,7 @@ class KdbxEntry extends KdbxObject {
 
   KdbxEntry.read(KdbxReadWriteContext ctx, KdbxGroup? parent, XmlElement node,
       {this.isHistoryEntry = false})
-      : customData = node
-                .singleElement(KdbxXml.NODE_CUSTOM_DATA)
-                ?.let((e) => KdbxCustomData.read(e)) ??
-            KdbxCustomData.create(),
-        history = [],
+      : history = [],
         super.read(ctx, parent, node) {
     _strings.addEntries(node.findElements(KdbxXml.NODE_STRING).map((el) {
       final key = KdbxKey(el.findElements(KdbxXml.NODE_KEY).single.text);
@@ -552,16 +549,17 @@ class KdbxEntry extends KdbxObject {
     _browserSettings = null;
   }
 
-  final KdbxCustomData customData;
-
   final bool isHistoryEntry;
 
   final List<KdbxEntry> history;
 
-  ColorNode get foregroundColor => ColorNode(this, 'ForegroundColor');
-  ColorNode get backgroundColor => ColorNode(this, 'BackgroundColor');
-  StringNode get overrideURL => StringNode(this, 'OverrideURL');
-  StringListNode get tags => StringListNode(this, 'Tags');
+  ColorNode get foregroundColor =>
+      ColorNode(this, KdbxXml.NODE_FOREGROUND_COLOR);
+  ColorNode get backgroundColor =>
+      ColorNode(this, KdbxXml.NODE_BACKGROUND_COLOR);
+  StringNode get overrideURL => StringNode(this, KdbxXml.NODE_OVERRIDE_URL);
+  NullableBooleanNode get qualityCheck =>
+      NullableBooleanNode(this, KdbxXml.NODE_QUALITY_CHECK);
 
   @override
   set file(KdbxFile? file) {
@@ -617,6 +615,12 @@ class KdbxEntry extends KdbxObject {
   @override
   XmlElement toXml() {
     final el = super.toXml()..replaceSingle(customData.toXml());
+
+    if (ctx.version < KdbxVersion.V4_1) {
+      XmlUtils.removeChildrenByName(el, KdbxXml.NODE_QUALITY_CHECK);
+      XmlUtils.removeChildrenByName(el, KdbxXml.NODE_PREVIOUS_PARENT_GROUP);
+    }
+
     XmlUtils.removeChildrenByName(el, KdbxXml.NODE_STRING);
     XmlUtils.removeChildrenByName(el, KdbxXml.NODE_HISTORY);
     XmlUtils.removeChildrenByName(el, KdbxXml.NODE_BINARY);

lib/src/kdbx_file.dart

@@ -2,15 +2,8 @@ import 'dart:async';
 import 'dart:typed_data';
 
 import 'package:collection/collection.dart';
-import 'package:kdbx/src/credentials/credentials.dart';
-import 'package:kdbx/src/crypto/protected_value.dart';
-import 'package:kdbx/src/kdbx_consts.dart';
-import 'package:kdbx/src/kdbx_dao.dart';
-import 'package:kdbx/src/kdbx_exceptions.dart';
+import 'package:kdbx/kdbx.dart';
 import 'package:kdbx/src/kdbx_format.dart';
-import 'package:kdbx/src/kdbx_group.dart';
-import 'package:kdbx/src/kdbx_header.dart';
-import 'package:kdbx/src/kdbx_object.dart';
 import 'package:logging/logging.dart';
 import 'package:quiver/check.dart';
 import 'package:synchronized/synchronized.dart';
@@ -150,17 +143,50 @@ class KdbxFile {
     return recycleBin ?? _createRecycleBin();
   }
 
-  /// Upgrade v3 file to v4.
-  void upgrade(int majorVersion) {
+  /// Upgrade v3 file to v4.x
+  void upgrade(int majorVersion, int minorVersion) {
     checkArgument(majorVersion == 4, message: 'Must be majorVersion 4');
-    body.meta.settingsChanged.setToNow();
     body.meta.headerHash.remove();
-    header.upgrade(majorVersion);
+    header.version.major == 4
+        ? header.upgradeMinor(majorVersion, minorVersion)
+        : header.upgrade(majorVersion, minorVersion);
+
+    upgradeDateTimeFormatV4();
+
+    body.meta.settingsChanged.setToNow();
+  }
+
+  void upgradeDateTimeFormatV4() {
+    body.meta.databaseNameChanged.upgrade();
+    body.meta.databaseDescriptionChanged.upgrade();
+    body.meta.defaultUserNameChanged.upgrade();
+    body.meta.masterKeyChanged.upgrade();
+    body.meta.recycleBinChanged.upgrade();
+    body.meta.entryTemplatesGroupChanged.upgrade();
+    body.meta.settingsChanged.upgrade();
+    body.rootGroup.getAllGroups().values.forEach(upgradeAllObjectTimesV4);
+    body.rootGroup.getAllEntries().values.forEach(upgradeAllObjectTimesV4);
+  }
+
+  void upgradeAllObjectTimesV4(KdbxObject obj) {
+    obj.times.creationTime.upgrade();
+    obj.times.lastModificationTime.upgrade();
+    obj.times.lastAccessTime.upgrade();
+    obj.times.expiryTime.upgrade();
+    obj.times.locationChanged.upgrade();
+
+    if (obj is KdbxEntry) {
+      obj.history.forEach(upgradeAllObjectTimesV4);
+    }
   }
 
   /// Merges the given file into this file.
   /// Both files must have the same origin (ie. same root group UUID).
   MergeContext merge(KdbxFile other) {
+    if (header.version < other.header.version) {
+      throw KdbxUnsupportedException(
+          'Kdbx version of source is newer. Upgrade file version before attempting to merge.');
+    }
     if (other.body.rootGroup.uuid != body.rootGroup.uuid) {
       throw KdbxUnsupportedException(
           'Root groups of source and dest file do not match.');

lib/src/kdbx_format.dart

@@ -61,6 +61,7 @@ class KdbxReadWriteContext {
   final KdbxHeader header;
 
   int get versionMajor => header.version.major;
+  KdbxVersion get version => header.version;
 
   void initContext(Iterable<KdbxBinary> binaries,
       Iterable<KdbxDeletedObject> deletedObjects) {
@@ -316,7 +317,8 @@ class KdbxBody extends KdbxNode {
     final now = clock.now().toUtc();
     final historyMaxItems = (meta.historyMaxItems.get() ?? 0) > 0
         ? meta.historyMaxItems.get()
-        : double.maxFinite as int;
+        : (double.maxFinite).toInt();
+
     final usedCustomIcons = HashSet<KdbxUuid>();
     final unusedCustomIcons = HashSet<KdbxUuid>();
     final usedBinaries = <int>{};
@@ -519,14 +521,14 @@ class KdbxFormat {
   static bool dartWebWorkaround = false;
 
   /// Creates a new, empty [KdbxFile] with default settings.
-  /// If [header] is not given by default a kdbx 4.0 file will be created.
+  /// If [header] is not given by default a kdbx 4.1 file will be created.
   KdbxFile create(
     Credentials credentials,
     String name, {
     String? generator,
     KdbxHeader? header,
   }) {
-    header ??= KdbxHeader.createV4();
+    header ??= KdbxHeader.createV4_1();
     final ctx = KdbxReadWriteContext(header: header);
     final meta = KdbxMeta.create(
       databaseName: name,

lib/src/kdbx_group.dart

@@ -42,7 +42,13 @@ class KdbxGroup extends KdbxObject {
 
   @override
   XmlElement toXml() {
-    final el = super.toXml();
+    final el = super.toXml()..replaceSingle(customData.toXml());
+
+    if (ctx.version < KdbxVersion.V4_1) {
+      XmlUtils.removeChildrenByName(el, KdbxXml.NODE_TAGS);
+      XmlUtils.removeChildrenByName(el, KdbxXml.NODE_PREVIOUS_PARENT_GROUP);
+    }
+
     XmlUtils.removeChildrenByName(el, 'Group');
     XmlUtils.removeChildrenByName(el, 'Entry');
     el.children.addAll(groups.values.map((g) => g.toXml()));
@@ -254,6 +260,7 @@ class KdbxGroup extends KdbxObject {
     overwriteSubNodesFrom(mergeContext, _overwriteNodes, other._overwriteNodes);
     // we should probably check that [lastTopVisibleEntry] is still a
     // valid reference?
+    customData.overwriteFrom(other.customData);
     times.overwriteFrom(other.times);
   }
 

lib/src/kdbx_header.dart

@@ -569,11 +569,18 @@ class KdbxHeader {
   void writeKdfParameters(VarDictionary kdfParameters) =>
       _setHeaderField(HeaderFields.KdfParameters, kdfParameters.write());
 
-  void upgrade(int majorVersion) {
+  void upgradeMinor(int majorVersion, int minorVersion) {
+    checkArgument(majorVersion == KdbxVersion.V4.major,
+        message: 'Can only upgrade v4');
+    _logger.info('Upgrading header to $minorVersion');
+    _version = KdbxVersion._(majorVersion, minorVersion);
+  }
+
+  void upgrade(int majorVersion, int minorVersion) {
     checkArgument(majorVersion == KdbxVersion.V4.major,
         message: 'Can only upgrade to 4');
-    _logger.info('Upgrading header to $majorVersion');
-    _version = KdbxVersion._(majorVersion, 0);
+    _logger.info('Upgrading header to $majorVersion.$minorVersion');
+    _version = KdbxVersion._(majorVersion, minorVersion);
     if (fields[HeaderFields.KdfParameters] == null) {
       _logger.fine('Creating kdf parameters.');
       writeKdfParameters(_createKdfDefaultParameters());