Add classified NTFS path template placeholders

LiamBaseClasses/C4IT.LIAM.Base.cs

@@ -48,6 +48,13 @@ namespace C4IT.LIAM
     {
     }
 
+    public static class cLiamAclPermissionDefaults
+    {
+        public const int Read = 0x200A9;
+        public const int Write = 0x301BF;
+        public const int Owner = 0x301BF;
+    }
+
     public class cLiamProviderData : ICloneable
     {
 
@@ -80,6 +87,9 @@ namespace C4IT.LIAM
         public string ReadGroupGlobal { get; set; } = "";
         public string ReadGroupLocal { get; set; } = "";
         public string TraverseGroup { get; set; } = "";
+        public int ReadACLPermission { get; set; } = cLiamAclPermissionDefaults.Read;
+        public int WriteACLPermission { get; set; } = cLiamAclPermissionDefaults.Write;
+        public int OwnerACLPermission { get; set; } = cLiamAclPermissionDefaults.Owner;
 
         public List<cLiamNamingConvention> NamingConventions { get; set; } = new List<cLiamNamingConvention>();
         public Dictionary<string, string> CustomTags { get; set; } = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
@@ -98,6 +108,9 @@ namespace C4IT.LIAM
             To.GroupFilter = From.GroupFilter;
             To.GroupRegEx = From.GroupRegEx;
             To.GroupPath = From.GroupPath;
+            To.ReadACLPermission = From.ReadACLPermission;
+            To.WriteACLPermission = From.WriteACLPermission;
+            To.OwnerACLPermission = From.OwnerACLPermission;
             To.CustomTags = From.CustomTags;
             To.AdditionalConfiguration = From.AdditionalConfiguration;
             To.CustomTags = From.CustomTags;

LiamNtfs/C4IT_IAM_SET/DataArea_FileSystem.cs

@@ -17,15 +17,15 @@ using C4IT.Logging;
 
 using static C4IT.Logging.cLogManager;
 using System.Reflection;
+using System.Threading;
 using C4IT_IAM_GET;
+using C4IT.LIAM;
 
 
 namespace C4IT_IAM_SET
 {
     public class DataArea_FileSystem
     {
-        public const string constApplicationDataPath = "%ProgramData%\\Consulting4IT GmbH\\LIAM";
-
         public string domainName;
         public string effectiveDomainController;
         public string username;
@@ -57,13 +57,16 @@ namespace C4IT_IAM_SET
         public Func<string, bool> CanManageTraversePermissionsForPath;
         public string traverseBoundaryPath;
         public bool forceStrictAdGroupNames;
+        public SecurityGroupReuseMode adGroupReuseMode = SecurityGroupReuseMode.Safe;
+        public bool adGroupMarkerBackfill;
         public string groupNameSanitizeReplacement = Helper.DefaultGroupNameSanitizeReplacement;
         public bool preserveAdGroupNameCase;
         public bool WhatIf;
+        public Func<string, Helper.RootPathTemplateContext> GetTemplateContextForPath;
 
-        public int ReadACLPermission = 0x200A9;
-        public int WriteACLPermission = 0x301BF;
-        public int OwnerACLPermission = 0x1F01FF;
+        public int ReadACLPermission = cLiamAclPermissionDefaults.Read;
+        public int WriteACLPermission = cLiamAclPermissionDefaults.Write;
+        public int OwnerACLPermission = cLiamAclPermissionDefaults.Owner;
 
 
         public string ConfigID;
@@ -74,20 +77,32 @@ namespace C4IT_IAM_SET
         public List<IAM_SecurityGroupTemplate> templates;
 
         public int createTraverseGroupLvl = 0;
+        private static int engineFileLoggerInitialized;
 
         public DataArea_FileSystem()
         {
-            var logDirectory = Environment.ExpandEnvironmentVariables(constApplicationDataPath);
-            Helper.CreatePathWithWriteAccess(logDirectory);
-            var LogPath = Path.Combine(logDirectory, "Logs");
-            cLogManagerFile.CreateInstance(Path.Combine(LogPath, "LIAM.log"));
+            EnsureEngineFileLoggerInitialized();
 
-            DefaultLogger.LogEntry(LogLevels.Info, "=================================================");
-            DefaultLogger.LogEntry(LogLevels.Info, $"LIAM engine v{Assembly.GetExecutingAssembly().GetName().Version} started");
+            if (DefaultLogger != null)
+            {
+                DefaultLogger.LogEntry(LogLevels.Info, "=================================================");
+                DefaultLogger.LogEntry(LogLevels.Info, $"LIAM engine v{Assembly.GetExecutingAssembly().GetName().Version} started");
+            }
 
             templates = new List<IAM_SecurityGroupTemplate>();
         }
 
+        private static void EnsureEngineFileLoggerInitialized()
+        {
+            if (DefaultLogger != null)
+                return;
+
+            if (Interlocked.Exchange(ref engineFileLoggerInitialized, 1) != 0)
+                return;
+
+            cLogManagerFile.CreateInstance(LocalMachine: true, A: Assembly.GetExecutingAssembly());
+        }
+
         private string GetAdServer()
         {
             return string.IsNullOrWhiteSpace(effectiveDomainController) ? domainName : effectiveDomainController;
@@ -311,10 +326,18 @@ namespace C4IT_IAM_SET
                 effectiveDomainController = effectiveDomainController,
                 password = password,
                 ForceStrictAdGroupNames = forceStrictAdGroupNames,
-                PreserveAdGroupNameCase = preserveAdGroupNameCase
+                PreserveAdGroupNameCase = preserveAdGroupNameCase,
+                ReuseMode = adGroupReuseMode,
+                MarkerBackfill = adGroupMarkerBackfill
             };
         }
 
+        private Helper.RootPathTemplateContext GetEffectiveTemplateContext(string path)
+        {
+            return GetTemplateContextForPath?.Invoke(path)
+                ?? Helper.GetRootPathTemplateContext(baseFolder, groupNameSanitizeReplacement);
+        }
+
         private ResultToken ValidateTraverseBoundaryForCurrentFolder()
         {
             var resultToken = new ResultToken(System.Reflection.MethodBase.GetCurrentMethod().ToString());
@@ -324,11 +347,11 @@ namespace C4IT_IAM_SET
             if (string.IsNullOrWhiteSpace(boundaryPath))
                 return resultToken;
 
-            var targetParent = new DirectoryInfo(newFolderPath).Parent;
-            if (targetParent == null)
+            var targetPath = NormalizeDirectoryPath(newFolderPath);
+            if (string.IsNullOrWhiteSpace(targetPath))
             {
                 resultToken.resultErrorId = 30009;
-                resultToken.resultMessage = $"Traverse boundary '{traverseBoundaryPath}' cannot be validated because '{newFolderPath}' has no parent directory.";
+                resultToken.resultMessage = $"Traverse boundary '{traverseBoundaryPath}' cannot be validated because the target path is empty.";
                 return resultToken;
             }
 
@@ -339,16 +362,144 @@ namespace C4IT_IAM_SET
                 return resultToken;
             }
 
-            if (!IsSameOrAncestorPath(boundaryPath, targetParent.FullName))
+            if (!IsSameOrAncestorPath(boundaryPath, targetPath))
             {
                 resultToken.resultErrorId = 30009;
-                resultToken.resultMessage = $"Traverse boundary '{traverseBoundaryPath}' is not a parent path of '{newFolderPath}'.";
+                resultToken.resultMessage = $"Traverse boundary '{traverseBoundaryPath}' is not the target path or a parent path of '{newFolderPath}'.";
             }
 
             return resultToken;
         }
 
         public ResultToken ensureDataAreaPermissions(bool ensureTraverseGroups = false)
+        {
+            LogMethodBegin(MethodBase.GetCurrentMethod());
+            var stopwatch = Stopwatch.StartNew();
+
+            try
+            {
+                DefaultLogger.LogEntry(
+                    LogLevels.Debug,
+                    $"NTFS engine ensure permissions start. Stage=Start Path='{newFolderPath}', BaseFolder='{baseFolder}', EnsureTraverseGroups={ensureTraverseGroups}, WhatIf={WhatIf}");
+
+                var resultToken = checkRequiredVariablesForEnsure();
+                if (resultToken.resultErrorId != 0)
+                    return resultToken;
+
+                DefaultLogger.LogEntry(
+                    LogLevels.Debug,
+                    $"NTFS engine ensure permissions stage. Stage=NetworkConnection Path='{newFolderPath}', BaseFolder='{baseFolder}'");
+
+                if (Connection != null)
+                    Connection.Dispose();
+
+                using (Connection = new cNetworkConnection(baseFolder, username, new NetworkCredential("", password).Password))
+                {
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage finished. Stage=NetworkConnection Path='{newFolderPath}', Elapsed='{stopwatch.Elapsed}'");
+
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage. Stage=DirectoryExists Path='{newFolderPath}'");
+                    if (!Directory.Exists(newFolderPath))
+                    {
+                        resultToken.resultErrorId = 30203;
+                        resultToken.resultMessage = "Verzeichnis existiert nicht";
+                        return resultToken;
+                    }
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage finished. Stage=DirectoryExists Path='{newFolderPath}', Elapsed='{stopwatch.Elapsed}'");
+
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage. Stage=InitializeFolderContext Path='{newFolderPath}'");
+                    var parentDirectory = Directory.GetParent(newFolderPath);
+                    if (string.IsNullOrWhiteSpace(newFolderParent))
+                        newFolderParent = parentDirectory?.FullName;
+
+                    InitializeFolderContext();
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage finished. Stage=InitializeFolderContext Path='{newFolderPath}', ParentPath='{newFolderParent}', Elapsed='{stopwatch.Elapsed}'");
+
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage. Stage=ValidateTraverseBoundary Path='{newFolderPath}'");
+                    var traverseBoundaryResult = ValidateTraverseBoundaryForCurrentFolder();
+                    if (traverseBoundaryResult.resultErrorId != 0)
+                        return traverseBoundaryResult;
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage finished. Stage=ValidateTraverseBoundary Path='{newFolderPath}', Elapsed='{stopwatch.Elapsed}'");
+
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage. Stage=EnsureADGroups Path='{newFolderPath}'");
+                    ensureADGroups(resultToken);
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage finished. Stage=EnsureADGroups Path='{newFolderPath}', CreatedGroups={resultToken.createdGroups.Count}, ReusedGroups={resultToken.reusedGroups.Count}, Warnings={resultToken.warnings.Count}, Elapsed='{stopwatch.Elapsed}'");
+
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage. Stage=EnsureFolderPermissions Path='{newFolderPath}'");
+                    resultToken = ensureFolderPermissions(resultToken);
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions stage finished. Stage=EnsureFolderPermissions Path='{newFolderPath}', ResultErrorId={resultToken.resultErrorId}, AddedAcls={resultToken.addedAclEntries.Count}, SkippedAcls={resultToken.skippedAclEntries.Count}, Elapsed='{stopwatch.Elapsed}'");
+
+                    if (resultToken.resultErrorId != 0)
+                        return resultToken;
+
+                    if (ensureTraverseGroups)
+                    {
+                        DefaultLogger.LogEntry(
+                            LogLevels.Debug,
+                            $"NTFS engine ensure permissions stage. Stage=SetTraversePermissions Path='{newFolderPath}'");
+                        var traverseResult = SetTraversePermissions();
+                        if (traverseResult != null)
+                        {
+                            resultToken.createdGroups.AddRange(traverseResult.createdGroups);
+                            resultToken.reusedGroups.AddRange(traverseResult.reusedGroups);
+                            resultToken.addedAclEntries.AddRange(traverseResult.addedAclEntries);
+                            resultToken.skippedAclEntries.AddRange(traverseResult.skippedAclEntries);
+                            resultToken.ensuredTraverseGroups.AddRange(traverseResult.ensuredTraverseGroups);
+                            resultToken.warnings.AddRange(traverseResult.warnings);
+                            if (traverseResult.resultErrorId != 0)
+                            {
+                                resultToken.resultErrorId = traverseResult.resultErrorId;
+                                resultToken.resultMessage = traverseResult.resultMessage;
+                                return resultToken;
+                            }
+                        }
+                        DefaultLogger.LogEntry(
+                            LogLevels.Debug,
+                            $"NTFS engine ensure permissions stage finished. Stage=SetTraversePermissions Path='{newFolderPath}', TraverseGroups={resultToken.ensuredTraverseGroups.Count}, AddedAcls={resultToken.addedAclEntries.Count}, Elapsed='{stopwatch.Elapsed}'");
+                    }
+
+                    resultToken.resultMessage = WhatIf
+                        ? "Gruppen- und ACL-Vorschau erfolgreich erstellt"
+                        : "Gruppen und ACLs erfolgreich sichergestellt";
+                    DefaultLogger.LogEntry(
+                        LogLevels.Debug,
+                        $"NTFS engine ensure permissions finished. Stage=Finished Path='{newFolderPath}', ResultErrorId={resultToken.resultErrorId}, ResultMessage='{resultToken.resultMessage}', Elapsed='{stopwatch.Elapsed}'");
+                    return resultToken;
+                }
+            }
+            catch (Exception E)
+            {
+                cLogManager.DefaultLogger.LogException(E);
+                throw;
+            }
+            finally
+            {
+                LogMethodEnd(MethodBase.GetCurrentMethod());
+            }
+        }
+
+        public ResultToken ensureTraversePermissionsOnly()
         {
             LogMethodBegin(MethodBase.GetCurrentMethod());
 
@@ -380,42 +531,15 @@ namespace C4IT_IAM_SET
                     if (traverseBoundaryResult.resultErrorId != 0)
                         return traverseBoundaryResult;
 
-                    ensureADGroups(resultToken);
-                    resultToken = ensureFolderPermissions(resultToken);
-
-                    if (resultToken.resultErrorId != 0)
-                        return resultToken;
-
-                    if (ensureTraverseGroups)
+                    EnsureExistingPermissionGroupsForTraverse(resultToken);
+                    resultToken = MergeResultTokens(resultToken, SetTraversePermissions(true));
+                    if (resultToken.resultErrorId == 0)
                     {
-                        if (WhatIf)
-                        {
-                            resultToken.warnings.Add("Traverse group preview is not supported in WhatIf mode for automatic DataArea ensure.");
-                            resultToken.resultMessage = "Gruppen- und ACL-Vorschau erfolgreich erstellt";
-                            return resultToken;
-                        }
-
-                        var traverseResult = SetTraversePermissions();
-                        if (traverseResult != null)
-                        {
-                            resultToken.createdGroups.AddRange(traverseResult.createdGroups);
-                            resultToken.reusedGroups.AddRange(traverseResult.reusedGroups);
-                            resultToken.addedAclEntries.AddRange(traverseResult.addedAclEntries);
-                            resultToken.skippedAclEntries.AddRange(traverseResult.skippedAclEntries);
-                            resultToken.ensuredTraverseGroups.AddRange(traverseResult.ensuredTraverseGroups);
-                            resultToken.warnings.AddRange(traverseResult.warnings);
-                            if (traverseResult.resultErrorId != 0)
-                            {
-                                resultToken.resultErrorId = traverseResult.resultErrorId;
-                                resultToken.resultMessage = traverseResult.resultMessage;
-                                return resultToken;
-                            }
-                        }
+                        resultToken.resultMessage = WhatIf
+                            ? "Traverse-Gruppen- und ACL-Vorschau erfolgreich erstellt"
+                            : "Traverse-Gruppen und ACLs erfolgreich sichergestellt";
                     }
 
-                    resultToken.resultMessage = WhatIf
-                        ? "Gruppen- und ACL-Vorschau erfolgreich erstellt"
-                        : "Gruppen und ACLs erfolgreich sichergestellt";
                     return resultToken;
                 }
             }
@@ -430,7 +554,51 @@ namespace C4IT_IAM_SET
             }
         }
 
-        private ResultToken SetTraversePermissions()
+        private void EnsureExistingPermissionGroupsForTraverse(ResultToken resultToken)
+        {
+            newSecurityGroups.IAM_SecurityGroups.Clear();
+            newSecurityGroups.GenerateNewSecurityGroups(baseFolder,
+                                                        newDataArea.IAM_Folders[0].technicalName,
+                                                        groupPrefix,
+                                                        groupOUPath,
+                                                        groupPermissionStrategy,
+                                                        groupTraverseTag,
+                                                        groupReadTag,
+                                                        groupWriteTag,
+                                                        groupOwnerTag,
+                                                        groupDLTag,
+                                                        groupGTag,
+                                                        groupCustomTags,
+                                                        templates,
+                                                        ReadACLPermission,
+                                                        WriteACLPermission,
+                                                        OwnerACLPermission,
+                                                        0,
+                                                        0,
+                                                        groupNameSanitizeReplacement,
+                                                        preserveAdGroupNameCase,
+                                                        GetEffectiveTemplateContext(newDataArea.IAM_Folders[0].technicalName));
+
+            var existingGroups = new List<IAM_SecurityGroup>();
+            foreach (var securityGroup in newSecurityGroups.IAM_SecurityGroups)
+            {
+                var existingGroup = newSecurityGroups.PreviewADGroup(groupOUPath, securityGroup, newDataArea.IAM_Folders[0].technicalName);
+                if (existingGroup == null || string.IsNullOrWhiteSpace(securityGroup.UID))
+                {
+                    if (securityGroup.Scope == GroupScope.Global)
+                        resultToken.warnings.Add($"Traverse-only: LIAM-Berechtigungsgruppe '{securityGroup.Name}' fehlt und wird nicht angelegt.");
+                    continue;
+                }
+
+                resultToken.reusedGroups.Add(securityGroup.Name);
+                existingGroups.Add(securityGroup);
+            }
+
+            newSecurityGroups.IAM_SecurityGroups.Clear();
+            newSecurityGroups.IAM_SecurityGroups.AddRange(existingGroups);
+        }
+
+        private ResultToken SetTraversePermissions(bool includeCurrentFolder = false)
         {
             LogMethodBegin(MethodBase.GetCurrentMethod());
 
@@ -467,20 +635,21 @@ namespace C4IT_IAM_SET
                 DirectoryInfo newDir = new DirectoryInfo(newDataArea.IAM_Folders[0].technicalName);
                 DefaultLogger.LogEntry(LogLevels.Debug, $"Neues Verzeichnis: {newDir.FullName}");
 
-                DirectoryInfo parent = newDir.Parent;
+                DirectoryInfo parent = includeCurrentFolder ? newDir : newDir.Parent;
                 if (parent == null)
                 {
-                    DefaultLogger.LogEntry(LogLevels.Error, "Parent-Verzeichnis ist null.");
+                    DefaultLogger.LogEntry(LogLevels.Error, "Traverse-Startverzeichnis ist null.");
                     return resultToken;
                 }
-                DefaultLogger.LogEntry(LogLevels.Debug, $"Parent-Verzeichnis: {parent.FullName}");
+                DefaultLogger.LogEntry(LogLevels.Debug, $"Traverse-Startverzeichnis: {parent.FullName}");
 
                 var lvl = DataArea.GetRelativePath(parent.FullName, baseFolder).Count(n => n == Path.DirectorySeparatorChar);
                 DefaultLogger.LogEntry(LogLevels.Debug, $"Ebene (lvl): {lvl}");
                 var currentTraverseLevel = lvl;
                 var defaultTraverseLoopIndex = lvl;
                 var hasTraverseBoundary = !string.IsNullOrWhiteSpace(GetNormalizedTraverseBoundaryPath());
-                var processedNearestTraverseParent = false;
+                var sourcePath = NormalizeDirectoryPath(newDataArea.IAM_Folders[0].technicalName);
+                var sourcePermissionGroupsAdded = false;
 
                 // Überprüfen der Templates
                 if (templates == null)
@@ -519,6 +688,10 @@ namespace C4IT_IAM_SET
                 }
 
                 GroupPrincipal traverseGroup = null;
+                string traverseGroupName = null;
+                var visitedTraverseStates = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+                var traverseIterationCount = 0;
+                const int maxTraverseIterations = 256;
 
                 // Überprüfen, ob createTraverseGroupLvl initialisiert ist
                 DefaultLogger.LogEntry(LogLevels.Debug, $"createTraverseGroupLvl: {createTraverseGroupLvl}");
@@ -539,6 +712,24 @@ namespace C4IT_IAM_SET
                         break;
                     }
 
+                    traverseIterationCount++;
+                    if (traverseIterationCount > maxTraverseIterations)
+                    {
+                        resultToken.resultErrorId = 30200;
+                        resultToken.resultMessage = $"Traverse-Verarbeitung fuer '{newDir.FullName}' wurde nach {maxTraverseIterations} Iterationen abgebrochen.";
+                        DefaultLogger.LogEntry(LogLevels.Error, resultToken.resultMessage);
+                        return resultToken;
+                    }
+
+                    var traverseState = $"{NormalizeDirectoryPath(parent.FullName)}|{currentTraverseLevel}|{defaultTraverseLoopIndex}";
+                    if (!visitedTraverseStates.Add(traverseState))
+                    {
+                        resultToken.resultErrorId = 30200;
+                        resultToken.resultMessage = $"Traverse-Verarbeitung fuer '{newDir.FullName}' wurde abgebrochen, weil der Pfad '{parent.FullName}' auf Ebene {currentTraverseLevel} erneut verarbeitet werden sollte.";
+                        DefaultLogger.LogEntry(LogLevels.Error, resultToken.resultMessage);
+                        return resultToken;
+                    }
+
                     var canManageTraversePath = CanManageTraversePermissionsForPath ?? CanManagePermissionsForPath;
                     if (canManageTraversePath != null && !canManageTraversePath(parent.FullName))
                     {
@@ -563,6 +754,29 @@ namespace C4IT_IAM_SET
                         continue;
                     }
 
+                    if (PathsEqual(parent.FullName, sourcePath) && string.IsNullOrWhiteSpace(traverseGroupName))
+                    {
+                        DefaultLogger.LogEntry(LogLevels.Debug, $"Skip own Traverse-Gruppe fuer '{parent.FullName}' because no child permission or traverse group needs it.");
+                        if (IsTraverseBoundaryPath(parent.FullName))
+                            break;
+
+                        parent = parent.Parent;
+                        if (parent != null)
+                        {
+                            currentTraverseLevel = hasTraverseBoundary
+                                ? currentTraverseLevel + 1
+                                : DataArea.GetRelativePath(parent.FullName, baseFolder).Count(n => n == Path.DirectorySeparatorChar);
+                            if (!hasTraverseBoundary)
+                                defaultTraverseLoopIndex--;
+                            DefaultLogger.LogEntry(LogLevels.Debug, $"Neue Ebene (lvl) nach Lazy-Skip: {currentTraverseLevel}");
+                        }
+                        else
+                        {
+                            DefaultLogger.LogEntry(LogLevels.Debug, "Parent nach Lazy-Skip ist null.");
+                        }
+                        continue;
+                    }
+
                     DefaultLogger.LogEntry(LogLevels.Debug, $"Hole ACL für Ordner: {parent.FullName}");
                     AuthorizationRuleCollection ACLs = null;
                     try
@@ -583,6 +797,7 @@ namespace C4IT_IAM_SET
                     }
 
                     GroupPrincipal parentTraverseGroup = null;
+                    string parentTraverseGroupName = null;
                     var parentTraverseAclExists = false;
                     string relativePathRaw = DataArea.GetRelativePath(parent.FullName, baseFolder).Trim(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
                     relativePathRaw = relativePathRaw.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
@@ -595,8 +810,8 @@ namespace C4IT_IAM_SET
                     var folderName = sanitizedSegments.Length > 0
                         ? sanitizedSegments[sanitizedSegments.Length - 1]
                         : Helper.SanitizePathSegment(Path.GetFileName(parent.FullName.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)), groupNameSanitizeReplacement);
-                    var traverseTags = GetTraverseReplacementTags(parent.FullName);
-                    var rootContext = Helper.GetRootPathTemplateContext(baseFolder, groupNameSanitizeReplacement);
+                    var traverseTags = GetTraverseReplacementTags(parent.FullName, traverseGroupTemplate.Scope);
+                    var rootContext = GetEffectiveTemplateContext(parent.FullName);
                     var boundedTraverseContext = Helper.GetBoundedAdGroupTemplateContext(
                         traverseGroupTemplate.NamingTemplate,
                         true,
@@ -684,16 +899,8 @@ namespace C4IT_IAM_SET
                             break;
                     }
 
-                    if (parentTraverseGroup == null && hasTraverseWildcard && !forceStrictAdGroupNames)
-                    {
-                        parentTraverseGroup = FindTraverseGroupByWildcard(domainContext, traverseRegex);
-                        if (parentTraverseGroup != null)
-                        {
-                            resultToken.reusedGroups.Add(parentTraverseGroup.Name);
-                            resultToken.ensuredTraverseGroups.Add(parentTraverseGroup.Name);
-                            DefaultLogger.LogEntry(LogLevels.Debug, $"Vorhandene Traverse-Gruppe per Wildcard wiederverwendet: {parentTraverseGroup.Name}");
-                        }
-                    }
+                    if (parentTraverseGroup != null)
+                        parentTraverseGroupName = parentTraverseGroup.Name;
 
                     if (parentTraverseGroup == null && !string.IsNullOrWhiteSpace(traverseNameTemplate))
                     {
@@ -704,6 +911,7 @@ namespace C4IT_IAM_SET
                             if (parentTraverseGroup == null)
                                 continue;
 
+                            parentTraverseGroupName = parentTraverseGroup.Name;
                             resultToken.reusedGroups.Add(candidateName);
                             resultToken.ensuredTraverseGroups.Add(candidateName);
                             DefaultLogger.LogEntry(LogLevels.Debug, $"Vorhandene Traverse-Gruppe wiederverwendet: {candidateName}");
@@ -711,6 +919,13 @@ namespace C4IT_IAM_SET
                         }
                     }
 
+                    if (parentTraverseGroup == null && hasTraverseWildcard && !forceStrictAdGroupNames)
+                    {
+                        DefaultLogger.LogEntry(
+                            LogLevels.Debug,
+                            $"Traverse wildcard '{traverseRegex}' is only used for ACL-linked groups on '{parent.FullName}'. Global wildcard reuse is skipped to avoid reusing a traverse group from another path.");
+                    }
+
                     if (parentTraverseGroup == null && !string.IsNullOrWhiteSpace(traverseNameTemplate))
                     {
                         DefaultLogger.LogEntry(LogLevels.Debug, "Erstelle neue TraverseGroup.");
@@ -731,7 +946,9 @@ namespace C4IT_IAM_SET
                                     Name = traverseNameTemplate.ReplaceLoopTag(loop),
                                     description = traverseDescriptionTemplate.ReplaceLoopTag(loop),
                                     technicalName = "CN=" + traverseNameTemplate.ReplaceLoopTag(loop) + "," + groupOUPath,
-                                    Scope = traverseGroupTemplate.Scope
+                                    securityGroupType = SecurityGroupType.Traverse,
+                                    Scope = traverseGroupTemplate.Scope,
+                                    MarkerPath = parent.FullName
                                 };
                                 DefaultLogger.LogEntry(LogLevels.Debug, $"Erstellte TraverseGroup: {newTraverseGroup.Name} (Loop: {loop})");
                                 loop++;
@@ -751,60 +968,58 @@ namespace C4IT_IAM_SET
                                 continue;
                             }
 
-                            if (parent.Parent != null)
+                            DefaultLogger.LogEntry(LogLevels.Debug, "Erstelle AD-Gruppe.");
+                            if (WhatIf)
                             {
-                                DefaultLogger.LogEntry(LogLevels.Debug, "Parent.Parent ist nicht null. Erstelle AD-Gruppe.");
-                                if (WhatIf)
-                                {
-                                    resultToken.createdGroups.Add(newTraverseGroup.Name);
-                                    resultToken.ensuredTraverseGroups.Add(newTraverseGroup.Name);
-                                    resultToken.warnings.Add($"Traverse-Gruppe würde angelegt werden: {newTraverseGroup.Name}");
-                                    resultToken.addedAclEntries.Add(newTraverseGroup.Name);
-                                    parentTraverseAclExists = true;
-                                }
-                                else
-                                {
-                                    try
-                                    {
-                                        newSecurityGroups.CreateADGroup(groupOUPath, newTraverseGroup, null);
-                                        DefaultLogger.LogEntry(LogLevels.Debug, $"AD-Gruppe erstellt: {newTraverseGroup.Name}");
-                                        resultToken.createdGroups.Add(newTraverseGroup.Name);
-                                        resultToken.ensuredTraverseGroups.Add(newTraverseGroup.Name);
-                                    }
-                                    catch (Exception ex)
-                                    {
-                                        DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Erstellen der AD-Gruppe: {ex.Message}");
-                                        continue;
-                                    }
-
-                                    parentTraverseGroup = GroupPrincipal.FindByIdentity(domainContext, newTraverseGroup.Name);
-                                    if (parentTraverseGroup == null)
-                                    {
-                                        DefaultLogger.LogEntry(LogLevels.Error, $"parentTraverseGroup konnte nach Erstellung der Gruppe nicht gefunden werden: {newTraverseGroup.Name}");
-                                        continue;
-                                    }
-
-                                    try
-                                    {
-                                        var accesscontrol = parent.GetAccessControl();
-                                        accesscontrol.AddAccessRule(new FileSystemAccessRule(parentTraverseGroup.Sid,
-                                                FileSystemRights.Read, InheritanceFlags.None, PropagationFlags.None,
-                                                AccessControlType.Allow));
-                                        DefaultLogger.LogEntry(LogLevels.Debug, $"Setze Traverse-ACL auf: {parent.FullName} für {parentTraverseGroup.DistinguishedName}");
-                                        parent.SetAccessControl(accesscontrol);
-                                        resultToken.addedAclEntries.Add(parentTraverseGroup.Name);
-                                        parentTraverseAclExists = true;
-                                    }
-                                    catch (Exception ex)
-                                    {
-                                        DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Setzen der ACL: {ex.Message}");
-                                        continue;
-                                    }
-                                }
+                                parentTraverseGroupName = newTraverseGroup.Name;
+                                resultToken.createdGroups.Add(newTraverseGroup.Name);
+                                resultToken.ensuredTraverseGroups.Add(newTraverseGroup.Name);
+                                resultToken.warnings.Add($"Traverse-Gruppe würde angelegt werden: {newTraverseGroup.Name}");
+                                resultToken.addedAclEntries.Add(newTraverseGroup.Name);
+                                parentTraverseAclExists = true;
                             }
                             else
                             {
-                                DefaultLogger.LogEntry(LogLevels.Debug, "Parent.Parent ist null. Traverse-ACL kann nicht gesetzt werden.");
+                                try
+                                {
+                                    newSecurityGroups.CreateADGroup(groupOUPath, newTraverseGroup, null);
+                                    DefaultLogger.LogEntry(LogLevels.Debug, $"AD-Gruppe erstellt: {newTraverseGroup.Name}");
+                                    resultToken.createdGroups.Add(newTraverseGroup.Name);
+                                    resultToken.ensuredTraverseGroups.Add(newTraverseGroup.Name);
+                                }
+                                catch (Exception ex)
+                                {
+                                    DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Erstellen der AD-Gruppe: {ex.Message}");
+                                    continue;
+                                }
+
+                                parentTraverseGroup = GroupPrincipal.FindByIdentity(domainContext, newTraverseGroup.Name);
+                                if (parentTraverseGroup == null)
+                                {
+                                    DefaultLogger.LogEntry(LogLevels.Error, $"parentTraverseGroup konnte nach Erstellung der Gruppe nicht gefunden werden: {newTraverseGroup.Name}");
+                                    continue;
+                                }
+
+                                parentTraverseGroupName = parentTraverseGroup.Name;
+
+                                try
+                                {
+                                    var accesscontrol = parent.GetAccessControl();
+                                    accesscontrol.AddAccessRule(new FileSystemAccessRule(parentTraverseGroup.Sid,
+                                            FileSystemRights.Read, InheritanceFlags.None, PropagationFlags.None,
+                                            AccessControlType.Allow));
+                                    DefaultLogger.LogEntry(LogLevels.Debug, $"Setze Traverse-ACL auf: {parent.FullName} für {parentTraverseGroup.DistinguishedName}");
+                                    parent.SetAccessControl(accesscontrol);
+                                    resultToken.addedAclEntries.Add(parentTraverseGroup.Name);
+                                    parentTraverseAclExists = true;
+                                }
+                                catch (Exception ex)
+                                {
+                                    DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Setzen der ACL: {ex.Message}");
+                                    resultToken.resultErrorId = 30200;
+                                    resultToken.resultMessage = $"Fehler beim Setzen der Traverse-ACL auf '{parent.FullName}' fuer '{parentTraverseGroupName ?? newTraverseGroup.Name}': {ex.Message}";
+                                    return resultToken;
+                                }
                             }
                         }
                     }
@@ -839,66 +1054,84 @@ namespace C4IT_IAM_SET
                         catch (Exception ex)
                         {
                             DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Sicherstellen der Traverse-ACL: {ex.Message}");
-                            continue;
+                            resultToken.resultErrorId = 30200;
+                            resultToken.resultMessage = $"Fehler beim Sicherstellen der Traverse-ACL auf '{parent.FullName}' fuer '{parentTraverseGroup.Name}': {ex.Message}";
+                            return resultToken;
                         }
                     }
 
-                    if (parentTraverseGroup != null)
+                    if (parentTraverseGroup != null || !string.IsNullOrWhiteSpace(parentTraverseGroupName))
                     {
-                        if (!processedNearestTraverseParent)
+                        var displayTraverseGroupName = parentTraverseGroup?.Name ?? parentTraverseGroupName;
+                        var isSourceTraversePath = PathsEqual(parent.FullName, sourcePath);
+                        if (!sourcePermissionGroupsAdded)
                         {
-                            DefaultLogger.LogEntry(LogLevels.Debug, "Verarbeite SecurityGroups bei oberster Ebene.");
-                            foreach (var currentSecGroup in newSecurityGroups.IAM_SecurityGroups)
+                            if (isSourceTraversePath)
                             {
-                                if (currentSecGroup == null)
-                                {
-                                    DefaultLogger.LogEntry(LogLevels.Error, "currentSecGroup ist null.");
-                                    continue;
-                                }
-                                if (currentSecGroup.Scope != GroupScope.Global)
-                                    continue;
-
-                                if (WhatIf)
-                                {
-                                    resultToken.warnings.Add($"Traverse-Gruppe '{parentTraverseGroup.Name}' würde Mitglied '{currentSecGroup.Name}' erhalten.");
-                                    continue;
-                                }
-
-                                if (!TryEnsureGlobalGroupMembershipWithRetry(domainContext, parentTraverseGroup, currentSecGroup))
-                                    continue;
+                                DefaultLogger.LogEntry(LogLevels.Debug, $"Skip direct permission group membership for own Traverse-Gruppe '{displayTraverseGroupName}' on '{parent.FullName}'.");
                             }
-                            traverseGroup = parentTraverseGroup;
-                            processedNearestTraverseParent = true;
-                        }
-                        else
-                        {
-                            if (traverseGroup != null && parentTraverseGroup != null)
+                            else
                             {
-                                try
+                                DefaultLogger.LogEntry(LogLevels.Debug, "Verarbeite SecurityGroups in erster uebergeordneter Traverse-Gruppe.");
+                                foreach (var currentSecGroup in newSecurityGroups.IAM_SecurityGroups)
                                 {
-                                    if (!parentTraverseGroup.Members.Contains(traverseGroup))
+                                    if (currentSecGroup == null)
                                     {
-                                        if (WhatIf)
-                                        {
-                                            resultToken.warnings.Add($"Traverse-Gruppe '{parentTraverseGroup.Name}' würde verschachtelte Gruppe '{traverseGroup.Name}' erhalten.");
-                                        }
-                                        else
-                                        {
-                                            if (!TryEnsureNestedTraverseGroupMembershipWithRetry(parentTraverseGroup, traverseGroup))
-                                                continue;
-                                        }
+                                        DefaultLogger.LogEntry(LogLevels.Error, "currentSecGroup ist null.");
+                                        continue;
                                     }
+                                    if (currentSecGroup.Scope != GroupScope.Global)
+                                        continue;
+                                    if (IsSameGroupName(currentSecGroup.Name, displayTraverseGroupName))
+                                    {
+                                        DefaultLogger.LogEntry(LogLevels.Debug, $"Skip self membership for Traverse-Gruppe '{displayTraverseGroupName}'.");
+                                        continue;
+                                    }
+
+                                    if (WhatIf)
+                                    {
+                                        resultToken.warnings.Add($"Traverse-Gruppe '{displayTraverseGroupName}' würde Mitglied '{currentSecGroup.Name}' erhalten.");
+                                        continue;
+                                    }
+
+                                    if (!TryEnsureGlobalGroupMembershipWithRetry(domainContext, parentTraverseGroup, currentSecGroup))
+                                        continue;
                                 }
-                                catch (Exception ex)
-                                {
-                                    DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Hinzufügen der Traverse-Gruppe: {ex.Message}");
-                                    continue;
-                                }
+
+                                sourcePermissionGroupsAdded = true;
                             }
                         }
+
+                        if (!string.IsNullOrWhiteSpace(traverseGroupName))
+                        {
+                            try
+                            {
+                                if (IsSameGroupName(displayTraverseGroupName, traverseGroupName))
+                                {
+                                    DefaultLogger.LogEntry(LogLevels.Debug, $"Skip nested self membership for Traverse-Gruppe '{displayTraverseGroupName}'.");
+                                }
+                                else if (WhatIf)
+                                {
+                                    resultToken.warnings.Add($"Traverse-Gruppe '{displayTraverseGroupName}' würde verschachtelte Gruppe '{traverseGroupName}' erhalten.");
+                                }
+                                else if (traverseGroup != null && parentTraverseGroup != null && !parentTraverseGroup.Members.Contains(traverseGroup))
+                                {
+                                    if (!TryEnsureNestedTraverseGroupMembershipWithRetry(parentTraverseGroup, traverseGroup))
+                                        continue;
+                                }
+                            }
+                            catch (Exception ex)
+                            {
+                                DefaultLogger.LogEntry(LogLevels.Error, $"Fehler beim Hinzufügen der Traverse-Gruppe: {ex.Message}");
+                                continue;
+                            }
+                        }
+
+                        traverseGroup = parentTraverseGroup;
+                        traverseGroupName = displayTraverseGroupName;
                         try
                         {
-                            if (!WhatIf)
+                            if (!WhatIf && parentTraverseGroup != null)
                             {
                                 parentTraverseGroup.Save();
                                 DefaultLogger.LogEntry(LogLevels.Debug, $"parentTraverseGroup gespeichert: {parentTraverseGroup.Name}");
@@ -914,8 +1147,8 @@ namespace C4IT_IAM_SET
                         DefaultLogger.LogEntry(LogLevels.Debug, "parentTraverseGroup ist null.");
                     }
 
-                    if (parentTraverseGroup != null && !resultToken.ensuredTraverseGroups.Contains(parentTraverseGroup.Name))
-                        resultToken.ensuredTraverseGroups.Add(parentTraverseGroup.Name);
+                    if (!string.IsNullOrWhiteSpace(parentTraverseGroupName) && !resultToken.ensuredTraverseGroups.Contains(parentTraverseGroupName))
+                        resultToken.ensuredTraverseGroups.Add(parentTraverseGroupName);
 
                     if (IsTraverseBoundaryPath(parent.FullName))
                         break;
@@ -962,14 +1195,45 @@ namespace C4IT_IAM_SET
                 && PathsEqual(boundaryPath, path);
         }
 
-        private Dictionary<string, string> GetTraverseReplacementTags(string currentPath)
+        private Dictionary<string, string> GetTraverseReplacementTags(string currentPath, GroupScope traverseScope)
         {
             var visibleSegments = GetVisibleTraversePathSegments(currentPath);
-            return new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+            var tags = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+            if (groupCustomTags != null)
             {
-                { "TRAVERSE_NAME", Helper.SanitizePathSegment(GetLastPathSegment(currentPath), groupNameSanitizeReplacement) },
-                { "TRAVERSE_VISIBLEPATH", Helper.JoinSanitizedPathSegments(visibleSegments.Select(i => Helper.SanitizePathSegment(i, groupNameSanitizeReplacement)), groupNameSanitizeReplacement) }
-            };
+                foreach (var customTag in groupCustomTags)
+                    tags[customTag.Key] = customTag.Value;
+            }
+
+            tags["PREFIX"] = groupPrefix;
+            tags["GROUPTYPEPOSTFIX"] = groupTraverseTag;
+            tags["SCOPETAG"] = traverseScope == GroupScope.Local ? groupDLTag : groupGTag;
+            tags["TRAVERSE_NAME"] = Helper.SanitizePathSegment(GetLastPathSegment(currentPath), groupNameSanitizeReplacement);
+            tags["TRAVERSE_VISIBLEPATH"] = Helper.JoinSanitizedPathSegments(visibleSegments.Select(i => Helper.SanitizePathSegment(i, groupNameSanitizeReplacement)), groupNameSanitizeReplacement);
+            return tags;
+        }
+
+        private static bool IsSameGroupName(string left, string right)
+        {
+            return !string.IsNullOrWhiteSpace(left)
+                && !string.IsNullOrWhiteSpace(right)
+                && string.Equals(left, right, StringComparison.OrdinalIgnoreCase);
+        }
+
+        private static bool IsSamePrincipal(GroupPrincipal left, GroupPrincipal right)
+        {
+            if (left == null || right == null)
+                return false;
+
+            var leftSid = left.Sid?.Value;
+            var rightSid = right.Sid?.Value;
+            if (!string.IsNullOrWhiteSpace(leftSid) && !string.IsNullOrWhiteSpace(rightSid))
+                return string.Equals(leftSid, rightSid, StringComparison.OrdinalIgnoreCase);
+
+            if (!string.IsNullOrWhiteSpace(left.DistinguishedName) && !string.IsNullOrWhiteSpace(right.DistinguishedName))
+                return string.Equals(left.DistinguishedName, right.DistinguishedName, StringComparison.OrdinalIgnoreCase);
+
+            return IsSameGroupName(left.SamAccountName ?? left.Name, right.SamAccountName ?? right.Name);
         }
 
         private IEnumerable<string> GetVisibleTraversePathSegments(string currentPath)
@@ -1152,6 +1416,12 @@ namespace C4IT_IAM_SET
             if (parentTraverseGroup == null || traverseGroup == null)
                 return false;
 
+            if (IsSamePrincipal(parentTraverseGroup, traverseGroup))
+            {
+                DefaultLogger.LogEntry(LogLevels.Debug, $"Skip nested self membership for Traverse-Gruppe '{parentTraverseGroup.Name}'.");
+                return true;
+            }
+
             return RetryTraverseMembershipAction(
                 traverseGroup.Name,
                 true,
@@ -1343,7 +1613,8 @@ namespace C4IT_IAM_SET
                                                             0,
                                                             0,
                                                             groupNameSanitizeReplacement,
-                                                            preserveAdGroupNameCase);
+                                                            preserveAdGroupNameCase,
+                                                            GetEffectiveTemplateContext(newDataArea.IAM_Folders[0].technicalName));
 
                 List<UserPrincipal> owners = getUserPrincipalBySid(ownerUserSids);
                 List<UserPrincipal> writers = getUserPrincipalBySid(writerUserSids);
@@ -1461,11 +1732,11 @@ namespace C4IT_IAM_SET
             DirectoryInfo dInfo = new DirectoryInfo(technicalName);
             //DirectoryInfo dInfoBaseFolder = new DirectoryInfo(baseFolderTechnicalName);
 
-            // Get a DirectorySecurity object that represents the 
+            // Get a DirectorySecurity object that represents the
             // current security settings.
             DirectorySecurity dSecurity = dInfo.GetAccessControl();
 
-            // Add the FileSystemAccessRule to the security settings. 
+            // Add the FileSystemAccessRule to the security settings.
             var everyone = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
 
             dSecurity.AddAccessRule(new FileSystemAccessRule(everyone,
@@ -1509,7 +1780,8 @@ namespace C4IT_IAM_SET
                                                                 existingADGroupCount,
                                                                 0,
                                                                 groupNameSanitizeReplacement,
-                                                                preserveAdGroupNameCase);
+                                                                preserveAdGroupNameCase,
+                                                                GetEffectiveTemplateContext(newDataArea.IAM_Folders[0].technicalName));
                     /*
                     if (existingADGroupCount > 0 && !templates.All(t => t.Type == SecurityGroupType.Traverse || Regex.IsMatch(t.NamingTemplate, @"(?<loopTag>{{(?<prefix>[^}]*)(?<loop>LOOP)(?<postfix>[^{]*)}})")))
                     {

LiamNtfs/C4IT_IAM_SET/DataArea_FileSystem_GET.cs

@@ -14,6 +14,7 @@ using System.Security.AccessControl;
 using System.Security.Principal;
 using System.Text;
 using System.Text.RegularExpressions;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Xml;
 using System.Xml.Serialization;
@@ -32,8 +33,6 @@ namespace C4IT_IAM_GET
     }
     public class DataArea_FileSystem
     {
-        public const string constApplicationDataPath = "%ProgramData%\\Consulting4IT GmbH\\LIAM";
-
         public string domainName;
         public string DomainIPAddress;
         public string username;
@@ -74,6 +73,7 @@ namespace C4IT_IAM_GET
 
         public string SecGroupXML;
         public string DataAreasXML;
+        private static int engineFileLoggerInitialized;
 
         public SecureString Password { get => password; set => password = value; }
         public string StartDir { get => startDir; set => startDir = value; }
@@ -130,15 +130,26 @@ namespace C4IT_IAM_GET
 
         public DataArea_FileSystem()
         {
-            var logDirectory = Environment.ExpandEnvironmentVariables(constApplicationDataPath);
-            Helper.CreatePathWithWriteAccess(logDirectory);
-            var LogPath = Path.Combine(logDirectory, "Logs");
-            cLogManagerFile.CreateInstance(Path.Combine(LogPath, "LIAM.log"));
-            DefaultLogger.LogEntry(LogLevels.Info, "=================================================");
-            DefaultLogger.LogEntry(LogLevels.Info, $"LIAM engine v{Assembly.GetExecutingAssembly().GetName().Version} started");
+            EnsureEngineFileLoggerInitialized();
+            if (DefaultLogger != null)
+            {
+                DefaultLogger.LogEntry(LogLevels.Info, "=================================================");
+                DefaultLogger.LogEntry(LogLevels.Info, $"LIAM engine v{Assembly.GetExecutingAssembly().GetName().Version} started");
+            }
 
         }
 
+        private static void EnsureEngineFileLoggerInitialized()
+        {
+            if (DefaultLogger != null)
+                return;
+
+            if (Interlocked.Exchange(ref engineFileLoggerInitialized, 1) != 0)
+                return;
+
+            cLogManagerFile.CreateInstance(LocalMachine: true, A: Assembly.GetExecutingAssembly());
+        }
+
         private void FillMatchingGroups()
         {
             LogMethodBegin(MethodBase.GetCurrentMethod());

LiamNtfs/C4IT_IAM_SET/Helper.cs

@@ -15,7 +15,7 @@ namespace C4IT_IAM_Engine
         public const int MaxAdGroupDescriptionLength = 1024;
         public const int MaxAdGroupLoopDigits = 3;
         public const string DefaultGroupNameSanitizeReplacement = "_";
-        private const string AdUnsafeGroupNameCharactersPattern = @"[\x00-\x1F\s\-\/\\\[\]:;\|=,\+\*\?<>\@()'""]";
+        private const string AdUnsafeGroupNameCharactersPattern = @"[\x00-\x1F\x7F\/\\\[\]:;\|=,\+\*\?<>]";
         private const int MinLeadingRelativePathSegmentLength = 3;
         private const int MinSingleLeadingRelativePathSegmentLength = 2;
         private const int MinLastRelativePathSegmentLength = 12;
@@ -33,6 +33,9 @@ namespace C4IT_IAM_Engine
         public sealed class RootPathTemplateContext
         {
             public string Server { get; set; } = string.Empty;
+            public string ServerName { get; set; } = string.Empty;
+            public string DfsNamespaceName { get; set; } = string.Empty;
+            public string ShareName { get; set; } = string.Empty;
             public string[] Segments { get; set; } = Array.Empty<string>();
             public string Name { get; set; } = string.Empty;
             public string Path { get; set; } = string.Empty;
@@ -109,6 +112,8 @@ namespace C4IT_IAM_Engine
             return new RootPathTemplateContext
             {
                 Server = server,
+                ServerName = server,
+                ShareName = sanitizedPathSegments.Length == 0 ? string.Empty : sanitizedPathSegments[sanitizedPathSegments.Length - 1],
                 Segments = sanitizedPathSegments,
                 Name = sanitizedPathSegments.Length == 0 ? string.Empty : sanitizedPathSegments[sanitizedPathSegments.Length - 1],
                 Path = sanitizedPathSegments.Length == 0 ? string.Empty : JoinSanitizedPathSegments(sanitizedPathSegments, groupNameSanitizeReplacement),
@@ -308,6 +313,9 @@ namespace C4IT_IAM_Engine
 
             var context = rootContext ?? new RootPathTemplateContext();
             var result = Regex.Replace(templateValue, @"{{\s*ROOT_SERVER\s*}}", context.Server ?? string.Empty, RegexOptions.IgnoreCase);
+            result = Regex.Replace(result, @"{{\s*SERVER_NAME\s*}}", context.ServerName ?? context.Server ?? string.Empty, RegexOptions.IgnoreCase);
+            result = Regex.Replace(result, @"{{\s*DFS_NAMESPACE_NAME\s*}}", context.DfsNamespaceName ?? string.Empty, RegexOptions.IgnoreCase);
+            result = Regex.Replace(result, @"{{\s*SHARE_NAME\s*}}", context.ShareName ?? string.Empty, RegexOptions.IgnoreCase);
             result = Regex.Replace(result, @"{{\s*ROOT_NAME\s*}}", context.Name ?? string.Empty, RegexOptions.IgnoreCase);
             result = Regex.Replace(result, @"{{\s*ROOT_PATH(?:\s*\(\s*(\d+)\s*\))?\s*}}", match =>
             {

LiamNtfs/C4IT_IAM_SET/SecurityGroup.cs

@@ -26,9 +26,13 @@ namespace C4IT_IAM_Engine
         public SecureString password;
         public bool ForceStrictAdGroupNames;
         public bool PreserveAdGroupNameCase;
+        public SecurityGroupReuseMode ReuseMode = SecurityGroupReuseMode.Safe;
+        public bool MarkerBackfill;
 
         public List<IAM_SecurityGroup> IAM_SecurityGroups;
         public string rootUID;
+        private const string MarkerAttributeName = "info";
+        private const string MarkerPrefix = "LIAM;Provider=Ntfs;";
         public SecurityGroups()
         {
             IAM_SecurityGroups = new List<IAM_SecurityGroup>();
@@ -138,7 +142,8 @@ namespace C4IT_IAM_Engine
             int loop = 0,
             int existingADGroupCount = 0,
             string groupNameSanitizeReplacement = Helper.DefaultGroupNameSanitizeReplacement,
-            bool preserveAdGroupNameCase = false)
+            bool preserveAdGroupNameCase = false,
+            Helper.RootPathTemplateContext templateContext = null)
         {
             LogMethodBegin(MethodBase.GetCurrentMethod());
             try
@@ -159,7 +164,7 @@ namespace C4IT_IAM_Engine
                 var folderName = sanitizedSegments.Length > 0
                     ? sanitizedSegments[sanitizedSegments.Length - 1]
                     : Helper.SanitizePathSegment(Path.GetFileName(newFolderPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)), groupNameSanitizeReplacement);
-                var rootContext = Helper.GetRootPathTemplateContext(baseFolder, groupNameSanitizeReplacement);
+                var rootContext = templateContext ?? Helper.GetRootPathTemplateContext(baseFolder, groupNameSanitizeReplacement);
 
                 foreach (var template in resolvedTemplates)
                 {
@@ -269,9 +274,11 @@ namespace C4IT_IAM_Engine
                     WildcardPattern = ownerGlobal.WildcardTemplate,
 
                     technicalName = "CN=" + ownerGlobal.NamingTemplate + "," + ouPath,
+                    securityGroupType = SecurityGroupType.Owner,
                     targetTyp = (int)IAM_TargetType.FileSystem,
                     rights = (FileSystemRights)ownerACLPermission,
-                    Scope = GroupScope.Global
+                    Scope = GroupScope.Global,
+                    MarkerPath = newFolderPath
                 };
                 IAM_SecurityGroups.Add(osecGroup);
 
@@ -283,9 +290,11 @@ namespace C4IT_IAM_Engine
                     WildcardPattern = writeGlobal.WildcardTemplate,
 
                     technicalName = "CN=" + writeGlobal.NamingTemplate + "," + ouPath,
+                    securityGroupType = SecurityGroupType.Write,
                     targetTyp = (int)IAM_TargetType.FileSystem,
                     rights = (FileSystemRights)writeACLPermission,
-                    Scope = GroupScope.Global
+                    Scope = GroupScope.Global,
+                    MarkerPath = newFolderPath
                 };
                 IAM_SecurityGroups.Add(wsecGroup);
 
@@ -297,9 +306,11 @@ namespace C4IT_IAM_Engine
                     WildcardPattern = readGlobal.WildcardTemplate,
 
                     technicalName = "CN=" + readGlobal.NamingTemplate + "," + ouPath,
+                    securityGroupType = SecurityGroupType.Read,
                     targetTyp = (int)IAM_TargetType.FileSystem,
                     rights = (FileSystemRights)readACLPermission,
-                    Scope = GroupScope.Global
+                    Scope = GroupScope.Global,
+                    MarkerPath = newFolderPath
                 };
                 IAM_SecurityGroups.Add(rsecGroup);
 
@@ -315,9 +326,11 @@ namespace C4IT_IAM_Engine
                         WildcardPattern = ownerDL.WildcardTemplate,
 
                         technicalName = "CN=" + ownerDL.NamingTemplate + "," + ouPath,
+                        securityGroupType = SecurityGroupType.Owner,
                         targetTyp = (int)IAM_TargetType.FileSystem,
                         rights = (FileSystemRights)ownerACLPermission,
-                        Scope = GroupScope.Local
+                        Scope = GroupScope.Local,
+                        MarkerPath = newFolderPath
                     };
                     osecDLGroup.memberGroups.Add(osecGroup);
                     IAM_SecurityGroups.Add(osecDLGroup);
@@ -330,9 +343,11 @@ namespace C4IT_IAM_Engine
                         WildcardPattern = writeDL.WildcardTemplate,
 
                         technicalName = "CN=" + writeDL.NamingTemplate + "," + ouPath,
+                        securityGroupType = SecurityGroupType.Write,
                         targetTyp = (int)IAM_TargetType.FileSystem,
                         rights = (FileSystemRights)writeACLPermission,
-                        Scope = GroupScope.Local
+                        Scope = GroupScope.Local,
+                        MarkerPath = newFolderPath
                     };
                     wsecDLGroup.memberGroups.Add(wsecGroup);
                     IAM_SecurityGroups.Add(wsecDLGroup);
@@ -345,9 +360,11 @@ namespace C4IT_IAM_Engine
                         WildcardPattern = readDL.WildcardTemplate,
 
                         technicalName = "CN=" + readDL.NamingTemplate + "," + ouPath,
+                        securityGroupType = SecurityGroupType.Read,
                         targetTyp = (int)IAM_TargetType.FileSystem,
                         rights = (FileSystemRights)readACLPermission,
-                        Scope = GroupScope.Local
+                        Scope = GroupScope.Local,
+                        MarkerPath = newFolderPath
                     };
                     rsecDLGroup.memberGroups.Add(rsecGroup);
                     IAM_SecurityGroups.Add(rsecDLGroup);
@@ -661,6 +678,168 @@ namespace C4IT_IAM_Engine
                 group.CommitChanges();
         }
 
+        private static string NormalizeMarkerPath(string path)
+        {
+            if (string.IsNullOrWhiteSpace(path))
+                return string.Empty;
+
+            return path.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar).TrimEnd(Path.DirectorySeparatorChar);
+        }
+
+        private static string GetMarkerScope(GroupScope scope)
+        {
+            return scope == GroupScope.Local ? "DomainLocal" : "Global";
+        }
+
+        private static string BuildMarker(IAM_SecurityGroup secGroup)
+        {
+            return $"{MarkerPrefix}Path={NormalizeMarkerPath(secGroup.MarkerPath)};Role={secGroup.securityGroupType};Scope={GetMarkerScope(secGroup.Scope)}";
+        }
+
+        private static Dictionary<string, string> ParseMarker(string marker)
+        {
+            var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+            if (string.IsNullOrWhiteSpace(marker) || !marker.StartsWith(MarkerPrefix, StringComparison.OrdinalIgnoreCase))
+                return result;
+
+            foreach (var part in marker.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries))
+            {
+                var separatorIndex = part.IndexOf('=');
+                if (separatorIndex <= 0)
+                    continue;
+
+                result[part.Substring(0, separatorIndex).Trim()] = part.Substring(separatorIndex + 1).Trim();
+            }
+
+            return result;
+        }
+
+        private static IEnumerable<string> GetLiamMarkers(string info)
+        {
+            if (string.IsNullOrWhiteSpace(info))
+                return Enumerable.Empty<string>();
+
+            return info
+                .Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries)
+                .Select(i => i.Trim())
+                .Where(i => i.StartsWith(MarkerPrefix, StringComparison.OrdinalIgnoreCase));
+        }
+
+        private static bool IsMatchingMarker(string marker, IAM_SecurityGroup secGroup)
+        {
+            var values = ParseMarker(marker);
+            if (values.Count == 0)
+                return false;
+
+            return values.TryGetValue("Provider", out var provider)
+                && string.Equals(provider, "Ntfs", StringComparison.OrdinalIgnoreCase)
+                && values.TryGetValue("Path", out var markerPath)
+                && string.Equals(NormalizeMarkerPath(markerPath), NormalizeMarkerPath(secGroup.MarkerPath), StringComparison.OrdinalIgnoreCase)
+                && values.TryGetValue("Role", out var role)
+                && string.Equals(role, secGroup.securityGroupType.ToString(), StringComparison.OrdinalIgnoreCase)
+                && values.TryGetValue("Scope", out var scope)
+                && string.Equals(scope, GetMarkerScope(secGroup.Scope), StringComparison.OrdinalIgnoreCase);
+        }
+
+        private bool TryReadInfoAttribute(DirectoryEntry group, out string info)
+        {
+            info = string.Empty;
+            if (group == null)
+                return false;
+
+            try
+            {
+                group.RefreshCache(new[] { MarkerAttributeName });
+                if (group.Properties.Contains(MarkerAttributeName) && group.Properties[MarkerAttributeName].Count > 0)
+                    info = group.Properties[MarkerAttributeName].Value?.ToString() ?? string.Empty;
+
+                return true;
+            }
+            catch (Exception E)
+            {
+                DefaultLogger.LogEntry(LogLevels.Warning, $"AD group marker attribute '{MarkerAttributeName}' cannot be read for '{group.Path}'. Marker-based reuse is not available. {E.Message}");
+                return false;
+            }
+        }
+
+        private bool HasMatchingMarker(DirectoryEntry group, IAM_SecurityGroup secGroup)
+        {
+            if (!TryReadInfoAttribute(group, out var info))
+                return false;
+
+            return GetLiamMarkers(info).Any(marker => IsMatchingMarker(marker, secGroup));
+        }
+
+        private bool TryWriteMarker(DirectoryEntry group, IAM_SecurityGroup secGroup, bool onlyIfNoLiamMarker)
+        {
+            if (group == null)
+                return false;
+
+            if (!TryReadInfoAttribute(group, out var info))
+                return false;
+
+            var existingMarkers = GetLiamMarkers(info).ToList();
+            if (existingMarkers.Any(marker => IsMatchingMarker(marker, secGroup)))
+                return true;
+
+            if (onlyIfNoLiamMarker && existingMarkers.Count > 0)
+            {
+                DefaultLogger.LogEntry(LogLevels.Warning, $"AD group '{secGroup.Name}' already has a LIAM marker, but it does not match path '{secGroup.MarkerPath}' and role '{secGroup.securityGroupType}'. Marker backfill is skipped.");
+                return false;
+            }
+
+            try
+            {
+                var marker = BuildMarker(secGroup);
+                var newInfo = string.IsNullOrWhiteSpace(info)
+                    ? marker
+                    : info.TrimEnd('\r', '\n') + Environment.NewLine + marker;
+                group.Properties[MarkerAttributeName].Value = newInfo;
+                group.CommitChanges();
+                DefaultLogger.LogEntry(LogLevels.Debug, $"AD group marker written to '{secGroup.Name}': {marker}");
+                return true;
+            }
+            catch (Exception E)
+            {
+                DefaultLogger.LogEntry(LogLevels.Warning, $"AD group marker attribute '{MarkerAttributeName}' cannot be written for '{secGroup.Name}'. {E.Message}");
+                return false;
+            }
+        }
+
+        private DirectoryEntry ValidateExistingGroupReuse(DirectoryEntry existingGroup, IAM_SecurityGroup secGroup, string folderPath, bool linkedFromFolderAcl)
+        {
+            if (existingGroup == null)
+                return null;
+
+            if (ReuseMode == SecurityGroupReuseMode.Name)
+            {
+                if (!linkedFromFolderAcl && !HasMatchingMarker(existingGroup, secGroup))
+                    DefaultLogger.LogEntry(LogLevels.Warning, $"AD group '{secGroup.Name}' is reused by name because NtfsAdGroupReuseMode=Name is active. This bypasses ACL/marker validation for '{secGroup.MarkerPath}'.");
+
+                ApplyExistingGroup(secGroup, existingGroup);
+                return existingGroup;
+            }
+
+            if (linkedFromFolderAcl)
+            {
+                if (MarkerBackfill)
+                    TryWriteMarker(existingGroup, secGroup, true);
+
+                ApplyExistingGroup(secGroup, existingGroup);
+                return existingGroup;
+            }
+
+            if (HasMatchingMarker(existingGroup, secGroup))
+            {
+                ApplyExistingGroup(secGroup, existingGroup);
+                return existingGroup;
+            }
+
+            var message = $"Existing AD group '{secGroup.Name}' was found by name for '{folderPath ?? secGroup.MarkerPath}', but it is not linked on the folder ACL and has no matching LIAM marker. Reuse is blocked in NtfsAdGroupReuseMode=Safe. Set NtfsAdGroupReuseMode=Name to allow legacy name-based reuse.";
+            DefaultLogger.LogEntry(LogLevels.Warning, message);
+            throw new InvalidOperationException(message);
+        }
+
         public DirectoryEntry EnsureADGroup(string ouPath, IAM_SecurityGroup secGroup, List<UserPrincipal> users, string folderPath = null)
         {
             LogMethodBegin(MethodBase.GetCurrentMethod());
@@ -668,8 +847,12 @@ namespace C4IT_IAM_Engine
             {
                 secGroup.CreatedNewEntry = false;
                 DirectoryEntry existingGroup = null;
+                var linkedFromFolderAcl = false;
                 if (!ForceStrictAdGroupNames)
+                {
                     existingGroup = FindGroupEntryFromFolderAcl(folderPath, secGroup.WildcardPattern);
+                    linkedFromFolderAcl = existingGroup != null;
+                }
 
                 if (existingGroup == null)
                     existingGroup = FindGroupEntry(secGroup.Name);
@@ -680,8 +863,8 @@ namespace C4IT_IAM_Engine
                 if (existingGroup == null)
                     return CreateADGroup(ouPath, secGroup, users);
 
+                existingGroup = ValidateExistingGroupReuse(existingGroup, secGroup, folderPath, linkedFromFolderAcl);
                 AddMissingMembers(existingGroup, secGroup, users);
-                ApplyExistingGroup(secGroup, existingGroup);
                 return existingGroup;
             }
             catch (Exception E)
@@ -702,8 +885,12 @@ namespace C4IT_IAM_Engine
             {
                 secGroup.CreatedNewEntry = false;
                 DirectoryEntry existingGroup = null;
+                var linkedFromFolderAcl = false;
                 if (!ForceStrictAdGroupNames)
+                {
                     existingGroup = FindGroupEntryFromFolderAcl(folderPath, secGroup.WildcardPattern);
+                    linkedFromFolderAcl = existingGroup != null;
+                }
 
                 if (existingGroup == null)
                     existingGroup = FindGroupEntry(secGroup.Name);
@@ -714,8 +901,7 @@ namespace C4IT_IAM_Engine
                 if (existingGroup == null)
                     return null;
 
-                ApplyExistingGroup(secGroup, existingGroup);
-                return existingGroup;
+                return ValidateExistingGroupReuse(existingGroup, secGroup, folderPath, linkedFromFolderAcl);
             }
             catch (Exception E)
             {
@@ -738,55 +924,45 @@ namespace C4IT_IAM_Engine
                 secGroup.Name = groupName;
                 secGroup.technicalName = "CN=" + groupName + "," + ouPath;
 
-                if (!GroupAllreadyExisting(groupName))
+                if (GroupAllreadyExisting(groupName))
+                    throw new InvalidOperationException($"AD group '{groupName}' already exists. Create mode does not reuse existing groups.");
+
+                DirectoryEntry entry = new DirectoryEntry("LDAP://" + GetLdapServer() + "/" + ouPath, username, new NetworkCredential("", password).Password, AuthenticationTypes.Secure | AuthenticationTypes.Sealing);
+                DefaultLogger.LogEntry(LogLevels.Debug, $"Creating ad entry with CN / sAmAccountName: {groupName}");
+                DirectoryEntry group = entry.Children.Add("CN=" + groupName, "group");
+                group.Properties["sAmAccountName"].Value = groupName;
+                if (users != null && secGroup.Scope == GroupScope.Global)
                 {
-
-                    DirectoryEntry entry = new DirectoryEntry("LDAP://" + GetLdapServer() + "/" + ouPath, username, new NetworkCredential("", password).Password, AuthenticationTypes.Secure | AuthenticationTypes.Sealing);
-                    DefaultLogger.LogEntry(LogLevels.Debug, $"Creating ad entry with CN / sAmAccountName: {groupName}");
-                    DirectoryEntry group = entry.Children.Add("CN=" + groupName, "group");
-                    group.Properties["sAmAccountName"].Value = groupName;
-                    if (users != null && secGroup.Scope == GroupScope.Global)
+                    foreach (var user in users)
                     {
-                        foreach (var user in users)
-                        {
-                            DefaultLogger.LogEntry(LogLevels.Debug, $"Adding member: {user.DistinguishedName}");
-                            group.Properties["member"].Add(user.DistinguishedName);
-                        }
+                        DefaultLogger.LogEntry(LogLevels.Debug, $"Adding member: {user.DistinguishedName}");
+                        group.Properties["member"].Add(user.DistinguishedName);
                     }
-                    if(!String.IsNullOrEmpty(secGroup.description))
-                    {
-                        DefaultLogger.LogEntry(LogLevels.Debug, $"Setting description: {secGroup.description}");
-                        group.Properties["description"].Value = secGroup.description;
-                    }
-                    var groupType = secGroup.Scope == GroupScope.Global ? GroupScopeValues.Global : GroupScopeValues.Local;
-                    DefaultLogger.LogEntry(LogLevels.Debug, $"Setting groupType to: {groupType}");
-                    group.Properties["groupType"].Value = groupType;
-                    if (secGroup.Scope == GroupScope.Local)
-                        foreach (var iGroup in secGroup.memberGroups)
-                        {
-                            DefaultLogger.LogEntry(LogLevels.Debug, $"Adding member: {iGroup.technicalName}");
-                            group.Properties["member"].Add(iGroup.technicalName);
-                        }
-
-                    group.CommitChanges();
-                    DirectoryEntry ent = new DirectoryEntry("LDAP://" + GetLdapServer() + "/" + "CN=" + groupName + "," + ouPath, username, new NetworkCredential("", password).Password, AuthenticationTypes.Secure | AuthenticationTypes.Sealing);
-
-                    var objectid = SecurityGroups.getSID(ent);
-                    DefaultLogger.LogEntry(LogLevels.Debug, $"Security group created in ad: {secGroup.technicalName}");
-                    secGroup.UID = objectid;
-                    secGroup.CreatedNewEntry = true;
-                    return ent;
                 }
-                else
+                if(!String.IsNullOrEmpty(secGroup.description))
                 {
-                    DirectoryEntry e = FindGroupEntry(secGroup.Name);
-                    if (e == null)
-                        return null;
-                    AddMissingMembers(e, secGroup, users);
-                    ApplyExistingGroup(secGroup, e);
-                    return e;
+                    DefaultLogger.LogEntry(LogLevels.Debug, $"Setting description: {secGroup.description}");
+                    group.Properties["description"].Value = secGroup.description;
                 }
-                return null;
+                var groupType = secGroup.Scope == GroupScope.Global ? GroupScopeValues.Global : GroupScopeValues.Local;
+                DefaultLogger.LogEntry(LogLevels.Debug, $"Setting groupType to: {groupType}");
+                group.Properties["groupType"].Value = groupType;
+                if (secGroup.Scope == GroupScope.Local)
+                    foreach (var iGroup in secGroup.memberGroups)
+                    {
+                        DefaultLogger.LogEntry(LogLevels.Debug, $"Adding member: {iGroup.technicalName}");
+                        group.Properties["member"].Add(iGroup.technicalName);
+                    }
+
+                group.CommitChanges();
+                DirectoryEntry ent = new DirectoryEntry("LDAP://" + GetLdapServer() + "/" + "CN=" + groupName + "," + ouPath, username, new NetworkCredential("", password).Password, AuthenticationTypes.Secure | AuthenticationTypes.Sealing);
+
+                var objectid = SecurityGroups.getSID(ent);
+                DefaultLogger.LogEntry(LogLevels.Debug, $"Security group created in ad: {secGroup.technicalName}");
+                secGroup.UID = objectid;
+                secGroup.CreatedNewEntry = true;
+                TryWriteMarker(ent, secGroup, false);
+                return ent;
             }
             catch (Exception E)
             {
@@ -865,11 +1041,17 @@ namespace C4IT_IAM_Engine
         public int targetTyp;
         public GroupScope Scope;
         public FileSystemRights rights;
+        public string MarkerPath;
         public IAM_SecurityGroup()
         {
             memberGroups = new List<IAM_SecurityGroup>();
         }
     }
+    public enum SecurityGroupReuseMode
+    {
+        Safe,
+        Name
+    }
     public enum SecurityGroupType
     {
         [XmlEnum(Name = "0")]

LiamNtfs/cNtfsBase.cs

@@ -25,6 +25,7 @@ namespace LiamNtfs
         public PrincipalContext adContext = null;
         public Exception LastException { get; private set; } = null;
         public string LastErrorMessage { get; private set; } = null;
+        public cNtfsEnumerationDiagnostics LastEnumerationDiagnostics { get; private set; } = new cNtfsEnumerationDiagnostics();
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void ResetError()
@@ -169,6 +170,7 @@ namespace LiamNtfs
         public async Task<cNtfsCollectionBase> RequestFoldersListAsync(string rootPath, int depth)
         {
             ResetError();
+            LastEnumerationDiagnostics = new cNtfsEnumerationDiagnostics(rootPath, depth);
             try
             {
                 await Task.Delay(0);
@@ -217,7 +219,9 @@ namespace LiamNtfs
                 }
                 catch (Exception E)
                 {
-                    cLogManager.LogEntry($"Could not enumerate directories under '{rootPath.FullName}': {E.Message}", LogLevels.Warning);
+                    LastEnumerationDiagnostics.EnumerationFailures++;
+                    LastEnumerationDiagnostics.AddFailure(rootPath.FullName, E);
+                    cLogManager.LogEntry($"NTFS enumeration failed under '{rootPath.FullName}'. ReturnedPartialResult=true. Error='{E.Message}'", LogLevels.Warning);
                     cLogManager.LogException(E, LogLevels.Debug);
                     return folders;
                 }
@@ -239,11 +243,14 @@ namespace LiamNtfs
                     }
                     catch (Exception E)
                     {
-                        cLogManager.LogEntry($"Could not read directory metadata for '{directory.FullName}': {E.Message}", LogLevels.Warning);
+                        LastEnumerationDiagnostics.MetadataFailures++;
+                        LastEnumerationDiagnostics.AddFailure(directory.FullName, E);
+                        cLogManager.LogEntry($"NTFS directory metadata read failed for '{directory.FullName}'. DirectorySkipped=true. Error='{E.Message}'", LogLevels.Warning);
                         cLogManager.LogException(E, LogLevels.Debug);
                         continue;
                     }
 
+                    LastEnumerationDiagnostics.FoldersEnumerated++;
                     folders.Add(folder);
                     if (depth <= 0)
                         continue;
@@ -256,7 +263,9 @@ namespace LiamNtfs
                     }
                     catch (Exception E)
                     {
-                        cLogManager.LogEntry($"Could not scan subtree '{directory.FullName}': {E.Message}", LogLevels.Warning);
+                        LastEnumerationDiagnostics.SubtreeFailures++;
+                        LastEnumerationDiagnostics.AddFailure(directory.FullName, E);
+                        cLogManager.LogEntry($"NTFS subtree scan failed for '{directory.FullName}'. ReturnedPartialResult=true. Error='{E.Message}'", LogLevels.Warning);
                         cLogManager.LogException(E, LogLevels.Debug);
                     }
                 }
@@ -330,6 +339,39 @@ namespace LiamNtfs
         }
     }
 
+    public class cNtfsEnumerationDiagnostics
+    {
+        private const int MaxSamples = 10;
+
+        public cNtfsEnumerationDiagnostics()
+        {
+        }
+
+        public cNtfsEnumerationDiagnostics(string rootPath, int depth)
+        {
+            RootPath = rootPath ?? string.Empty;
+            Depth = depth;
+        }
+
+        public string RootPath { get; private set; } = string.Empty;
+        public int Depth { get; private set; }
+        public int FoldersEnumerated { get; set; }
+        public int EnumerationFailures { get; set; }
+        public int MetadataFailures { get; set; }
+        public int SubtreeFailures { get; set; }
+        public List<string> FailureSamples { get; } = new List<string>();
+
+        public int TotalFailures => EnumerationFailures + MetadataFailures + SubtreeFailures;
+
+        public void AddFailure(string path, Exception exception)
+        {
+            if (FailureSamples.Count >= MaxSamples)
+                return;
+
+            FailureSamples.Add($"{path}: {exception?.GetType().Name}: {exception?.Message}");
+        }
+    }
+
 
     public class cNtfsLogonInfo
     {

LiamWorkflowActivities/C4IT.LIAM.WorkflowActivities.cs

@@ -68,7 +68,10 @@ namespace C4IT.LIAM.Activities
 
                 var dataMain = dataProvider.GetDataList(constFragmentNameConfigProviderMain,
                     "ID, [Expression-ObjectId] as EOID, GCCDomain, GCCTarget, GCCMaxDepth, " +
-                    "GCCgroupLDAPFilter, GCCgroupOUPath, GCCPermissionGroupStrategy, GCCtargetType",
+                    "GCCgroupLDAPFilter, GCCgroupOUPath, GCCPermissionGroupStrategy, GCCtargetType, " +
+                    "OwnerACLPermission.C4IT_EnumValueInt as OwnerACLPermission, " +
+                    "WriteACLPermission.C4IT_EnumValueInt as WriteACLPermission, " +
+                    "ReadACLPermission.C4IT_EnumValueInt as ReadACLPermission",
                     $"[Expression-ObjectId] = '{configEOID}'");
 
                 Guid ConfigClassId = (Guid)dataMain.First()["ID"];

LiamWorkflowActivities/C4IT.LIAM.WorkflowactivityBase.cs

@@ -2,7 +2,9 @@
 using System;
 using System.Activities;
 using System.ComponentModel;
+using System.Diagnostics;
 using System.Reflection;
+using System.Security.Cryptography;
 using static C4IT.Logging.cLogManager;
 using Matrix42.Contracts.Platform.Data;
 using Matrix42.ServiceRepository.Contracts.Components;
@@ -120,6 +122,9 @@ namespace LiamWorkflowActivities
                     var CM = MethodBase.GetCurrentMethod();
                     LogMethodBegin(CM);
                     cLogManager.DefaultLogger.LogAssemblyInfo(Ass);
+                    LogAssemblyIdentity("WorkflowActivities", Ass);
+                    LogAssemblyIdentity("LiamNtfs", typeof(cLiamProviderNtfs).Assembly);
+                    LogAssemblyIdentity("LiamBaseClasses", typeof(cLiamProviderBase).Assembly);
                     IsInitialized = true;
                     LogMethodEnd(CM);
                 }
@@ -127,6 +132,39 @@ namespace LiamWorkflowActivities
             catch { };
         }
 
+        private static void LogAssemblyIdentity(string label, Assembly assembly)
+        {
+            if (assembly == null)
+                return;
+
+            var fileVersion = string.IsNullOrWhiteSpace(assembly.Location)
+                ? null
+                : FileVersionInfo.GetVersionInfo(assembly.Location);
+            var informationalVersion = assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? string.Empty;
+            LogEntry(
+                $"LIAM assembly identity: Label='{label}', Name='{assembly.GetName().Name}', AssemblyVersion='{assembly.GetName().Version}', InformationalVersion='{informationalVersion}', FileVersion='{fileVersion?.FileVersion}', ProductVersion='{fileVersion?.ProductVersion}', Sha256='{GetAssemblySha256(assembly)}', Location='{assembly.Location}'",
+                LogLevels.Info);
+        }
+
+        private static string GetAssemblySha256(Assembly assembly)
+        {
+            try
+            {
+                if (assembly == null || string.IsNullOrWhiteSpace(assembly.Location) || !File.Exists(assembly.Location))
+                    return string.Empty;
+
+                using (var stream = File.OpenRead(assembly.Location))
+                using (var sha256 = SHA256.Create())
+                {
+                    return BitConverter.ToString(sha256.ComputeHash(stream)).Replace("-", string.Empty);
+                }
+            }
+            catch
+            {
+                return string.Empty;
+            }
+        }
+
         public bool LoadLicensingInformation(bool force = false)
         {
             if (cC4ITLicenseM42ESM.Instance == null || force)
@@ -262,7 +300,10 @@ namespace LiamWorkflowActivities
                     GroupFilter = cLIAMHelper.getStringFromObject(dataMain["GCCgroupLDAPFilter"]),
                     GroupPath = cLIAMHelper.getStringFromObject(dataMain["GCCgroupOUPath"]),
                     GroupStrategy = (eLiamGroupStrategies)cLIAMHelper.getIntFromObject(dataMain["GCCPermissionGroupStrategy"]),
-                    ProviderType = (eLiamProviderTypes)cLIAMHelper.getIntFromObject(dataMain["GCCtargetType"])
+                    ProviderType = (eLiamProviderTypes)cLIAMHelper.getIntFromObject(dataMain["GCCtargetType"]),
+                    OwnerACLPermission = GetAclPermissionFromDataRow(dataMain, "OwnerACLPermission", cLiamAclPermissionDefaults.Owner),
+                    WriteACLPermission = GetAclPermissionFromDataRow(dataMain, "WriteACLPermission", cLiamAclPermissionDefaults.Write),
+                    ReadACLPermission = GetAclPermissionFromDataRow(dataMain, "ReadACLPermission", cLiamAclPermissionDefaults.Read)
                 };
                 if (dataAdditional != null)
                 {
@@ -383,6 +424,34 @@ namespace LiamWorkflowActivities
 
         }
 
+        private int GetAclPermissionFromDataRow(DataRow row, string columnName, int defaultValue)
+        {
+            if (row == null || string.IsNullOrWhiteSpace(columnName) || !row.Table.Columns.Contains(columnName))
+                return defaultValue;
+
+            var rawValue = cLIAMHelper.getStringFromObject(row[columnName]);
+            if (string.IsNullOrWhiteSpace(rawValue))
+                return defaultValue;
+
+            var value = rawValue.Trim();
+            try
+            {
+                if (value.StartsWith("0x", StringComparison.OrdinalIgnoreCase))
+                    return Convert.ToInt32(value.Substring(2), 16);
+
+                if (int.TryParse(value, out var parsedValue))
+                    return parsedValue;
+            }
+            catch (Exception ex)
+            {
+                LogEntry($"Could not parse ACL permission config value '{columnName}'='{rawValue}': {ex.Message}. Falling back to default '{defaultValue}'.", LogLevels.Warning);
+                return defaultValue;
+            }
+
+            LogEntry($"Could not parse ACL permission config value '{columnName}'='{rawValue}'. Falling back to default '{defaultValue}'.", LogLevels.Warning);
+            return defaultValue;
+        }
+
         public ProviderCacheEntry getDataProvider(Guid ProviderConfigClassID)
         {
             var CM = MethodBase.GetCurrentMethod();

LiamWorkflowActivities/LiamWorkflowRuntime.cs

@@ -5,6 +5,7 @@ using C4IT_IAM_Engine;
 using LiamAD;
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
@@ -77,6 +78,9 @@ namespace LiamWorkflowActivities
 
     public static class LiamWorkflowRuntime
     {
+        private const string AutomaticNtfsEnsureTimeoutSecondsKey = "NtfsAutomaticEnsureTimeoutSeconds";
+        private const int DefaultAutomaticNtfsEnsureTimeoutSeconds = 300;
+
         public static async Task<GetDataAreasOperationResult> GetDataAreasFromProviderAsync(cLiamProviderBase provider, string configurationId = null, bool? simulateConfiguredNtfsPermissionEnsure = null)
         {
             var result = new GetDataAreasOperationResult();
@@ -421,62 +425,219 @@ namespace LiamWorkflowActivities
 
             var allowFolderEnsure = IsAdditionalConfigurationEnabled(provider, "EnsureNtfsPermissionGroups");
             var allowSharePathEnsure = IsAdditionalConfigurationEnabled(provider, "EnsureNtfsPermissionGroupsForShares");
-            if (!allowFolderEnsure && !allowSharePathEnsure)
+            var allowTraverseEnsure = IsAdditionalConfigurationEnabled(provider, "EnsureNtfsTraverseGroups");
+            var ensureTimeoutSeconds = GetAdditionalConfigurationInt32(
+                provider,
+                AutomaticNtfsEnsureTimeoutSecondsKey,
+                DefaultAutomaticNtfsEnsureTimeoutSeconds,
+                0);
+            var ensureTimeout = ensureTimeoutSeconds > 0
+                ? TimeSpan.FromSeconds(ensureTimeoutSeconds)
+                : TimeSpan.Zero;
+            if (!allowFolderEnsure && !allowSharePathEnsure && !allowTraverseEnsure)
                 return true;
 
-            foreach (var ntfsArea in dataAreas
-                .Where(dataArea =>
-                    allowFolderEnsure && dataArea is cLiamNtfsFolder
-                    || allowSharePathEnsure && dataArea is cLiamNtfsShare)
-                .Cast<cLiamNtfsPermissionDataAreaBase>())
+            LogEntry(
+                $"Automatic NTFS ensure configured. PermissionGroups={allowFolderEnsure}, PermissionGroupsForShares={allowSharePathEnsure}, TraverseGroups={allowTraverseEnsure}, DataAreas={dataAreas.Count}, WhatIf={simulateOnly}, TimeoutSeconds={ensureTimeoutSeconds}",
+                LogLevels.Debug);
+
+            if (allowFolderEnsure || allowSharePathEnsure)
             {
-                var folderPath = ntfsArea.TechnicalName;
-                if (string.IsNullOrWhiteSpace(folderPath))
-                    continue;
-
-                if (!Directory.Exists(folderPath))
+                foreach (var ntfsArea in dataAreas
+                    .Where(dataArea =>
+                        allowFolderEnsure && dataArea is cLiamNtfsFolder
+                        || allowSharePathEnsure && dataArea is cLiamNtfsShare)
+                    .Cast<cLiamNtfsPermissionDataAreaBase>())
                 {
-                    LogEntry($"Skipping automatic NTFS permission group ensure for '{folderPath}' because the directory does not exist.", LogLevels.Warning);
-                    continue;
-                }
+                    var folderPath = ntfsArea.TechnicalName;
+                    if (string.IsNullOrWhiteSpace(folderPath))
+                        continue;
 
-                var ensureResult = await ntfsProvider.EnsureMissingPermissionGroupsAsync(
-                    folderPath,
-                    null,
-                    null,
-                    null,
-                    null,
-                    allowSharePathEnsure,
-                    ntfsArea is cLiamNtfsFolder,
-                    simulateOnly);
-                if (ensureResult == null)
+                    var ensureTraverseInPermissionPhase = !allowTraverseEnsure && (ntfsArea is cLiamNtfsFolder || ntfsArea is cLiamNtfsShare);
+                    LogEntry(
+                        $"Automatic NTFS permission group ensure starting for '{folderPath}'. AllowSharePathEnsure={allowSharePathEnsure}, EnsureTraverseInPermissionPhase={ensureTraverseInPermissionPhase}, WhatIf={simulateOnly}",
+                        LogLevels.Debug);
+
+                    ResultToken ensureResult;
+                    try
+                    {
+                        ensureResult = await RunAutomaticNtfsEnsureOperationAsync(
+                            folderPath,
+                            "permission group ensure",
+                            () => ntfsProvider.EnsureMissingPermissionGroupsAsync(
+                                folderPath,
+                                null,
+                                null,
+                                null,
+                                null,
+                                allowSharePathEnsure,
+                                ensureTraverseInPermissionPhase,
+                                simulateOnly),
+                            ensureTimeout);
+                    }
+                    catch (Exception ex)
+                    {
+                        LogException(ex);
+                        LogEntry($"Automatic NTFS permission group ensure failed for '{folderPath}' with exception: {ex.Message}", LogLevels.Error);
+                        continue;
+                    }
+
+                    if (ensureResult == null)
+                    {
+                        var providerMessage = ntfsProvider.GetLastErrorMessage() ?? "Provider returned no result.";
+                        LogEntry(
+                            $"Automatic NTFS permission group ensure skipped for '{folderPath}' because the provider returned no result. ProviderMessage='{providerMessage}'",
+                            LogLevels.Warning);
+                        continue;
+                    }
+
+                    if (ensureResult.resultErrorId != 0)
+                    {
+                        if (IsAutomaticNtfsEnsureTimeout(ensureResult))
+                        {
+                            SetAutomaticEnsureTimeoutError(result, folderPath, ensureResult, "permission group ensure");
+                            return false;
+                        }
+
+                        LogEntry(
+                            $"Automatic NTFS permission group ensure skipped for '{folderPath}' after resultErrorId={ensureResult.resultErrorId}. ResultMessage='{ensureResult.resultMessage ?? string.Empty}'",
+                            LogLevels.Warning);
+                        continue;
+                    }
+
+                    if (simulateOnly)
+                    {
+                        LogAutomaticNtfsEnsurePreviewDebug(folderPath, ensureResult, "permission group ensure");
+                        result.AutomaticEnsurePreview.Add(MapAutomaticEnsurePreview(folderPath, ensureResult));
+                        continue;
+                    }
+
+                    LogAutomaticNtfsEnsureDebug(folderPath, ensureResult, "permission group ensure");
+                    LogEntry($"Automatic NTFS permission group resolve starting for '{folderPath}'.", LogLevels.Debug);
+                    await ntfsArea.ResolvePermissionGroupsAsync(folderPath);
+                    LogEntry($"Automatic NTFS permission group resolve finished for '{folderPath}'.", LogLevels.Debug);
+                }
+            }
+
+            if (allowTraverseEnsure)
+            {
+                foreach (var ntfsArea in dataAreas
+                    .Where(dataArea => dataArea is cLiamNtfsFolder || dataArea is cLiamNtfsShare)
+                    .Cast<cLiamNtfsPermissionDataAreaBase>())
                 {
-                    result.ErrorCode = "WF_GET_DATAAREAS_ENSURE_NTFS_GROUPS_FAILED";
-                    result.ErrorMessage = $"Automatic NTFS permission group ensure failed for '{folderPath}' because the provider returned no result.";
-                    return false;
-                }
+                    var folderPath = ntfsArea.TechnicalName;
+                    if (string.IsNullOrWhiteSpace(folderPath))
+                        continue;
 
-                if (ensureResult.resultErrorId != 0)
-                {
-                    result.ErrorCode = "WF_GET_DATAAREAS_ENSURE_NTFS_GROUPS_FAILED";
-                    result.ErrorMessage = $"Automatic NTFS permission group ensure failed for '{folderPath}': {ensureResult.resultMessage}";
-                    return false;
-                }
+                    LogEntry(
+                        $"Automatic NTFS traverse group ensure starting for '{folderPath}'. WhatIf={simulateOnly}",
+                        LogLevels.Debug);
 
-                if (simulateOnly)
-                {
-                    LogAutomaticNtfsEnsurePreviewDebug(folderPath, ensureResult);
-                    result.AutomaticEnsurePreview.Add(MapAutomaticEnsurePreview(folderPath, ensureResult));
-                    continue;
-                }
+                    ResultToken ensureResult;
+                    try
+                    {
+                        ensureResult = await RunAutomaticNtfsEnsureOperationAsync(
+                            folderPath,
+                            "traverse group ensure",
+                            () => ntfsProvider.EnsureTraverseGroupsAsync(
+                                folderPath,
+                                null,
+                                simulateOnly),
+                            ensureTimeout);
+                    }
+                    catch (Exception ex)
+                    {
+                        LogException(ex);
+                        LogEntry($"Automatic NTFS traverse group ensure failed for '{folderPath}' with exception: {ex.Message}", LogLevels.Error);
+                        continue;
+                    }
 
-                LogAutomaticNtfsEnsureDebug(folderPath, ensureResult);
-                await ntfsArea.ResolvePermissionGroupsAsync(folderPath);
+                    if (ensureResult == null)
+                    {
+                        var providerMessage = ntfsProvider.GetLastErrorMessage() ?? "Provider returned no result.";
+                        LogEntry(
+                            $"Automatic NTFS traverse group ensure skipped for '{folderPath}' because the provider returned no result. ProviderMessage='{providerMessage}'",
+                            LogLevels.Warning);
+                        continue;
+                    }
+
+                    if (ensureResult.resultErrorId != 0)
+                    {
+                        if (IsAutomaticNtfsEnsureTimeout(ensureResult))
+                        {
+                            SetAutomaticEnsureTimeoutError(result, folderPath, ensureResult, "traverse group ensure");
+                            return false;
+                        }
+
+                        LogEntry(
+                            $"Automatic NTFS traverse group ensure skipped for '{folderPath}' after resultErrorId={ensureResult.resultErrorId}. ResultMessage='{ensureResult.resultMessage ?? string.Empty}'",
+                            LogLevels.Warning);
+                        continue;
+                    }
+
+                    if (simulateOnly)
+                    {
+                        LogAutomaticNtfsEnsurePreviewDebug(folderPath, ensureResult, "traverse group ensure");
+                        result.AutomaticEnsurePreview.Add(MapAutomaticEnsurePreview(folderPath, ensureResult));
+                        continue;
+                    }
+
+                    LogAutomaticNtfsEnsureDebug(folderPath, ensureResult, "traverse group ensure");
+                }
             }
 
             return true;
         }
 
+        private static async Task<ResultToken> RunAutomaticNtfsEnsureOperationAsync(
+            string folderPath,
+            string operationLabel,
+            Func<Task<ResultToken>> operation,
+            TimeSpan timeout)
+        {
+            var operationTask = Task.Run(operation);
+#pragma warning disable 4014
+            // Fire-and-forget observer for exceptions that happen after a timeout.
+            operationTask.ContinueWith(
+                task => LogException(task.Exception),
+                TaskContinuationOptions.OnlyOnFaulted);
+#pragma warning restore 4014
+
+            if (timeout <= TimeSpan.Zero)
+                return await operationTask;
+
+            var completedTask = await Task.WhenAny(operationTask, Task.Delay(timeout));
+            if (completedTask == operationTask)
+                return await operationTask;
+
+            var message =
+                $"Automatic NTFS {operationLabel} timed out for '{folderPath}' after {timeout.TotalSeconds:F0}s. " +
+                "The workflow will stop automatic NTFS ensure processing for this run. " +
+                "The underlying NTFS/AD operation may still finish in the worker process.";
+            LogEntry(message, LogLevels.Error);
+            return new ResultToken("AutomaticNtfsEnsureTimeout")
+            {
+                resultErrorId = 30010,
+                resultMessage = message
+            };
+        }
+
+        private static bool IsAutomaticNtfsEnsureTimeout(ResultToken ensureResult)
+        {
+            return ensureResult?.resultErrorId == 30010;
+        }
+
+        private static void SetAutomaticEnsureTimeoutError(
+            GetDataAreasOperationResult result,
+            string folderPath,
+            ResultToken ensureResult,
+            string operationLabel)
+        {
+            result.ErrorCode = "WF_GET_DATAAREAS_ENSURE_NTFS_GROUPS_TIMEOUT";
+            result.ErrorMessage = ensureResult?.resultMessage
+                ?? $"Automatic NTFS {operationLabel} timed out for '{folderPath}'.";
+        }
+
         private static NtfsAutomaticEnsurePreviewEntry MapAutomaticEnsurePreview(string folderPath, ResultToken ensureResult)
         {
             return new NtfsAutomaticEnsurePreviewEntry
@@ -493,13 +654,13 @@ namespace LiamWorkflowActivities
             };
         }
 
-        private static void LogAutomaticNtfsEnsurePreviewDebug(string folderPath, ResultToken ensureResult)
+        private static void LogAutomaticNtfsEnsurePreviewDebug(string folderPath, ResultToken ensureResult, string operationLabel)
         {
             if (ensureResult == null)
                 return;
 
             LogEntry(
-                $"Automatic NTFS permission group ensure preview finished for '{folderPath}'. " +
+                $"Automatic NTFS {operationLabel} preview finished for '{folderPath}'. " +
                 $"WouldCreateGroups={ensureResult.createdGroups.Count}, " +
                 $"WouldReuseGroups={ensureResult.reusedGroups.Count}, " +
                 $"WouldAddAcls={ensureResult.addedAclEntries.Count}, " +
@@ -510,13 +671,13 @@ namespace LiamWorkflowActivities
                 LogLevels.Debug);
         }
 
-        private static void LogAutomaticNtfsEnsureDebug(string folderPath, ResultToken ensureResult)
+        private static void LogAutomaticNtfsEnsureDebug(string folderPath, ResultToken ensureResult, string operationLabel)
         {
             if (ensureResult == null)
                 return;
 
             LogEntry(
-                $"Automatic NTFS permission group ensure finished for '{folderPath}'. " +
+                $"Automatic NTFS {operationLabel} finished for '{folderPath}'. " +
                 $"CreatedGroups={ensureResult.createdGroups.Count}, " +
                 $"ReusedGroups={ensureResult.reusedGroups.Count}, " +
                 $"AddedAcls={ensureResult.addedAclEntries.Count}, " +
@@ -529,42 +690,42 @@ namespace LiamWorkflowActivities
             if (ensureResult.createdGroups.Count > 0)
             {
                 LogEntry(
-                    $"Automatic NTFS permission group ensure detected missing AD groups for '{folderPath}' and created them: {string.Join(", ", ensureResult.createdGroups)}",
+                    $"Automatic NTFS {operationLabel} detected missing AD groups for '{folderPath}' and created them: {string.Join(", ", ensureResult.createdGroups)}",
                     LogLevels.Debug);
             }
 
             if (ensureResult.reusedGroups.Count > 0)
             {
                 LogEntry(
-                    $"Automatic NTFS permission group ensure reused existing AD groups for '{folderPath}': {string.Join(", ", ensureResult.reusedGroups)}",
+                    $"Automatic NTFS {operationLabel} reused existing AD groups for '{folderPath}': {string.Join(", ", ensureResult.reusedGroups)}",
                     LogLevels.Debug);
             }
 
             if (ensureResult.addedAclEntries.Count > 0)
             {
                 LogEntry(
-                    $"Automatic NTFS permission group ensure added missing ACL entries for '{folderPath}': {string.Join(", ", ensureResult.addedAclEntries)}",
+                    $"Automatic NTFS {operationLabel} added missing ACL entries for '{folderPath}': {string.Join(", ", ensureResult.addedAclEntries)}",
                     LogLevels.Debug);
             }
 
             if (ensureResult.skippedAclEntries.Count > 0)
             {
                 LogEntry(
-                    $"Automatic NTFS permission group ensure kept existing ACL entries for '{folderPath}': {string.Join(", ", ensureResult.skippedAclEntries)}",
+                    $"Automatic NTFS {operationLabel} kept existing ACL entries for '{folderPath}': {string.Join(", ", ensureResult.skippedAclEntries)}",
                     LogLevels.Debug);
             }
 
             if (ensureResult.ensuredTraverseGroups.Count > 0)
             {
                 LogEntry(
-                    $"Automatic NTFS permission group ensure touched traverse groups for '{folderPath}': {string.Join(", ", ensureResult.ensuredTraverseGroups)}",
+                    $"Automatic NTFS {operationLabel} touched traverse groups for '{folderPath}': {string.Join(", ", ensureResult.ensuredTraverseGroups)}",
                     LogLevels.Debug);
             }
 
             if (ensureResult.warnings.Count > 0)
             {
                 LogEntry(
-                    $"Automatic NTFS permission group ensure produced warnings for '{folderPath}': {string.Join(" | ", ensureResult.warnings)}",
+                    $"Automatic NTFS {operationLabel} produced warnings for '{folderPath}': {string.Join(" | ", ensureResult.warnings)}",
                     LogLevels.Debug);
             }
         }
@@ -582,6 +743,33 @@ namespace LiamWorkflowActivities
                 || rawValue.Equals("yes", StringComparison.OrdinalIgnoreCase);
         }
 
+        private static int GetAdditionalConfigurationInt32(cLiamProviderBase provider, string key, int defaultValue, int minValue)
+        {
+            if (provider?.AdditionalConfiguration == null || string.IsNullOrWhiteSpace(key))
+                return defaultValue;
+
+            if (!provider.AdditionalConfiguration.TryGetValue(key, out var rawValue) || string.IsNullOrWhiteSpace(rawValue))
+                return defaultValue;
+
+            if (!int.TryParse(rawValue.Trim(), NumberStyles.Integer, CultureInfo.InvariantCulture, out var parsedValue))
+            {
+                LogEntry(
+                    $"AdditionalConfiguration '{key}' has invalid integer value '{rawValue}'. Defaulting to {defaultValue}.",
+                    LogLevels.Warning);
+                return defaultValue;
+            }
+
+            if (parsedValue < minValue)
+            {
+                LogEntry(
+                    $"AdditionalConfiguration '{key}' value {parsedValue} is below minimum {minValue}. Defaulting to {defaultValue}.",
+                    LogLevels.Warning);
+                return defaultValue;
+            }
+
+            return parsedValue;
+        }
+
         private static bool IsWorkflowWhatIfEnabled(cLiamProviderBase provider)
         {
             return IsAdditionalConfigurationEnabled(provider, "WhatIf");

LiamWorkflowDiagnostics/MainWindow.xaml

@@ -283,6 +283,7 @@
                                         <RowDefinition Height="Auto"/>
                                         <RowDefinition Height="Auto"/>
                                         <RowDefinition Height="Auto"/>
+                                        <RowDefinition Height="Auto"/>
                                     </Grid.RowDefinitions>
 
                                     <TextBlock Text="Folder Path" Grid.Row="0" Grid.Column="0" Margin="0,0,8,8" VerticalAlignment="Center"/>
@@ -299,7 +300,8 @@
 
                                     <CheckBox x:Name="NtfsEnsureTraverseCheckBox" Grid.Row="4" Grid.Column="1" Margin="0,0,0,8" Content="Ensure traverse groups and ACLs on parent path"/>
 
-                                    <Button x:Name="ExecuteNtfsEnsureButton" Grid.Row="5" Grid.Column="1" Width="220" HorizontalAlignment="Right" Content="Ensure Missing Groups / ACLs" Click="ExecuteNtfsEnsureButton_Click"/>
+                                    <Button x:Name="ExecuteNtfsEnsureButton" Grid.Row="5" Grid.Column="1" Width="220" HorizontalAlignment="Right" Margin="0,0,0,8" Content="Ensure Missing Groups / ACLs" Click="ExecuteNtfsEnsureButton_Click"/>
+                                    <Button x:Name="ExecuteNtfsTraverseOnlyButton" Grid.Row="6" Grid.Column="1" Width="220" HorizontalAlignment="Right" Content="Ensure Traverse Only" Click="ExecuteNtfsTraverseOnlyButton_Click"/>
                                 </Grid>
                             </TabItem>
                         </TabControl>

LiamWorkflowDiagnostics/MainWindow.xaml.cs

@@ -584,7 +584,7 @@ namespace LiamWorkflowDiagnostics
 
                 if (runWhatIf && result.AutomaticEnsurePreview != null && result.AutomaticEnsurePreview.Count > 0)
                 {
-                    AppendLog($"EnsureNtfsPermissionGroups wurde nur simuliert fuer {result.AutomaticEnsurePreview.Count} Ordner. Details stehen im Result-JSON.", LogLevels.Warning);
+                    AppendLog($"Automatisches NTFS-Ensure wurde nur simuliert fuer {result.AutomaticEnsurePreview.Count} DataAreas. Details stehen im Result-JSON.", LogLevels.Warning);
                 }
 
                 AppendLog($"DataAreas erhalten: {result.DataAreas.Count}");
@@ -617,35 +617,21 @@ namespace LiamWorkflowDiagnostics
 
                 await ExecuteProviderActionAsync("NTFS Folder Create", async () =>
                 {
-                    var result = await Task.Run(() => LiamWorkflowRuntime.CreateDataAreaAsync(
-                        provider,
-                        folderPath,
-                        parentPath,
-                        null,
-                        ownerSids,
-                        readerSids,
-                        writerSids));
+                    var result = await RunWithWorkflowWhatIfAsync(provider, () => Task.Run(() => LiamWorkflowRuntime.CreateDataAreaAsync(
+                            provider,
+                            folderPath,
+                            parentPath,
+                            null,
+                            ownerSids,
+                            readerSids,
+                            writerSids)));
 
                     return new
                     {
                         result.Success,
                         ResultToken = MapResultToken(result.ResultToken)
                     };
-                }, () =>
-                {
-                    return CreateWhatIfResult(
-                        "NTFS Folder Create",
-                        "Wuerde einen Ordner anlegen und fehlende Gruppen sowie ACLs sicherstellen. Es wurden keine Aenderungen ausgefuehrt.",
-                        new
-                        {
-                            ProviderRootPath = provider.RootPath,
-                            NewFolderPath = folderPath,
-                            ParentFolderPath = parentPath,
-                            OwnerSids = ownerSids,
-                            ReaderSids = readerSids,
-                            WriterSids = writerSids
-                        });
-                });
+                }, actionHandlesWhatIf: true);
             }
             catch (Exception ex)
             {
@@ -667,35 +653,21 @@ namespace LiamWorkflowDiagnostics
 
                 await ExecuteProviderActionAsync("NTFS Ensure Groups / ACLs", async () =>
                 {
-                    var result = await Task.Run(() => LiamWorkflowRuntime.EnsureNtfsPermissionGroupsAsync(
-                        provider,
-                        folderPath,
-                        null,
-                        ownerSids,
-                        readerSids,
-                        writerSids,
-                        ensureTraverse));
+                    var result = await RunWithWorkflowWhatIfAsync(provider, () => Task.Run(() => LiamWorkflowRuntime.EnsureNtfsPermissionGroupsAsync(
+                            provider,
+                            folderPath,
+                            null,
+                            ownerSids,
+                            readerSids,
+                            writerSids,
+                            ensureTraverse)));
 
                     return new
                     {
                         result.Success,
                         ResultToken = MapResultToken(result.ResultToken)
                     };
-                }, () =>
-                {
-                    return CreateWhatIfResult(
-                        "NTFS Ensure Groups / ACLs",
-                        "Wuerde fehlende NTFS-Berechtigungsgruppen und ACLs additiv sicherstellen. Es wurden keine Aenderungen ausgefuehrt.",
-                        new
-                        {
-                            ProviderRootPath = provider.RootPath,
-                            FolderPath = folderPath,
-                            OwnerSids = ownerSids,
-                            ReaderSids = readerSids,
-                            WriterSids = writerSids,
-                            EnsureTraverseGroups = ensureTraverse
-                        });
-                });
+                }, actionHandlesWhatIf: true);
             }
             catch (Exception ex)
             {
@@ -704,6 +676,34 @@ namespace LiamWorkflowDiagnostics
             }
         }
 
+        private async void ExecuteNtfsTraverseOnlyButton_Click(object sender, RoutedEventArgs e)
+        {
+            try
+            {
+                var provider = EnsureInitializedProvider<cLiamProviderNtfs>("NTFS");
+                var folderPath = GetRequiredText(NtfsEnsureFolderPathTextBox.Text, "Folder Path");
+
+                await ExecuteProviderActionAsync("NTFS Ensure Traverse Only", async () =>
+                {
+                    var token = await Task.Run(() => provider.EnsureTraverseGroupsAsync(
+                            folderPath,
+                            null,
+                            IsWhatIfEnabled));
+
+                    return new
+                    {
+                        Success = token != null && token.resultErrorId == 0,
+                        ResultToken = MapResultToken(token)
+                    };
+                }, actionHandlesWhatIf: true);
+            }
+            catch (Exception ex)
+            {
+                AppendLog($"NTFS Ensure Traverse Only fehlgeschlagen: {ex.Message}", LogLevels.Error);
+                MessageBox.Show(this, ex.ToString(), "NTFS Ensure Traverse Only", MessageBoxButton.OK, MessageBoxImage.Error);
+            }
+        }
+
         private async void ExecuteAdCreateButton_Click(object sender, RoutedEventArgs e)
         {
             try
@@ -950,7 +950,7 @@ namespace LiamWorkflowDiagnostics
             }
         }
 
-        private async Task ExecuteProviderActionAsync(string actionName, Func<Task<object>> action, Func<object> whatIfAction = null)
+        private async Task ExecuteProviderActionAsync(string actionName, Func<Task<object>> action, Func<object> whatIfAction = null, bool actionHandlesWhatIf = false)
         {
             if (action == null)
                 throw new ArgumentNullException(nameof(action));
@@ -959,11 +959,11 @@ namespace LiamWorkflowDiagnostics
             try
             {
                 SaveSettings();
-                var runInWhatIfMode = IsWhatIfEnabled && whatIfAction != null;
+                var runInWhatIfMode = IsWhatIfEnabled && (whatIfAction != null || actionHandlesWhatIf);
                 AppendLog(runInWhatIfMode
                     ? $"{actionName} im WhatIf-Modus gestartet. Schreibende Aenderungen werden nur simuliert."
                     : $"{actionName} gestartet.");
-                var result = runInWhatIfMode
+                var result = runInWhatIfMode && whatIfAction != null
                     ? await Task.Run(whatIfAction)
                     : await action();
                 ResultTextBox.Text = JsonConvert.SerializeObject(result, Formatting.Indented);
@@ -985,6 +985,39 @@ namespace LiamWorkflowDiagnostics
             }
         }
 
+        private async Task<TResult> RunWithWorkflowWhatIfAsync<TResult>(cLiamProviderBase provider, Func<Task<TResult>> action)
+        {
+            if (provider == null)
+                throw new ArgumentNullException(nameof(provider));
+            if (action == null)
+                throw new ArgumentNullException(nameof(action));
+
+            if (!IsWhatIfEnabled)
+                return await action();
+
+            var additionalConfiguration = provider.AdditionalConfiguration;
+            if (additionalConfiguration == null)
+            {
+                additionalConfiguration = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+                provider.AdditionalConfiguration = additionalConfiguration;
+            }
+
+            var hadWhatIf = additionalConfiguration.TryGetValue("WhatIf", out var previousWhatIf);
+            additionalConfiguration["WhatIf"] = "1";
+
+            try
+            {
+                return await action();
+            }
+            finally
+            {
+                if (hadWhatIf)
+                    additionalConfiguration["WhatIf"] = previousWhatIf;
+                else
+                    additionalConfiguration.Remove("WhatIf");
+            }
+        }
+
         private bool TryGetSuccessFlag(object instance, out bool success)
         {
             success = false;

README.md

@@ -1,5 +1,190 @@
 # LIAM
 
+## Naming Conventions fuer NTFS-Gruppen
+
+NTFS-Namenskonventionen bestehen aus `NamingTemplate`, `DescriptionTemplate` und `Wildcard`. Die Templates werden beim Erzeugen oder Sicherstellen von AD-Gruppen materialisiert. Der `Wildcard` ist eine regulaere Expression und wird beim Auslesen der ACLs verwendet, um vorhandene Gruppen wieder einer Rolle zuzuordnen.
+
+Die wichtigsten Eingaben fuer die Ersetzung sind:
+
+| Quelle | Beispiel |
+| --- | --- |
+| `RootPath` | `\\SRVWSM001.imagoverum.com\file_shares\share2` |
+| Aktuelle DataArea | `\\SRVWSM001.imagoverum.com\file_shares\share2\test33` |
+| `CustomTags` | `Filesystem_GroupGlobalTag=UG`, `Filesystem_GroupDomainLocalTag=FS`, `Filesystem_GroupOwnerTag=_OW` |
+| Rolle / Scope | z. B. `Owner` und `DomainLocal` |
+
+### Standard-Platzhalter
+
+| Platzhalter | Wirkung | Beispielwert bei Root `\\server\file_shares\share2` und DataArea `...\share2\test33` |
+| --- | --- | --- |
+| `{{NAME}}` | Name des aktuellen Ordners oder Shares. | `test33` |
+| `{{RELATIVEPATH}}` | Relativer Pfad der DataArea unterhalb des `RootPath`, mit Sanitizing und konfiguriertem Segmenttrenner. | `test33` |
+| `{{RELATIVEPATH(0)}}` | Letztes relatives Pfadsegment. | `test33` |
+| `{{RELATIVEPATH(1)}}` | Die letzten zwei relativen Pfadsegmente. Bei weniger Segmenten werden alle vorhandenen verwendet. | z. B. `team1_test33` |
+| `{{ROOT_SERVER}}` | Server-/Namespace-Teil des UNC-RootPath. | `server` |
+| `{{SERVER_NAME}}` | Server-/Namespace-Teil des aktuell verarbeiteten UNC-Pfads. | `server` |
+| `{{DFS_NAMESPACE_NAME}}` | Name des DFS-Namespaces, wenn der aktuelle Pfad in einem DFS-Namespace liegt. | `File_Shares` |
+| `{{SHARE_NAME}}` | Klassifizierter Share-Name: klassischer Share oder DFS-Link, in dem die aktuelle DataArea liegt. | `share2` |
+| `{{ROOT_NAME}}` | Letztes Segment des RootPath. | `share2` |
+| `{{ROOT_PATH}}` | Alle RootPath-Segmente ohne Server, mit Segmenttrenner verbunden. | `file_shares_share2` |
+| `{{ROOT_PATH(1)}}` | Letztes RootPath-Segment. | `share2` |
+| `{{ROOT_PATH(2)}}` | Letzte zwei RootPath-Segmente. | `file_shares_share2` |
+| `{{ROOT_SEGMENT(0)}}` | RootPath-Segment per 0-basierter Position, ohne Server. | `file_shares` |
+| `{{ROOT_SEGMENT(1)}}` | Zweites RootPath-Segment. | `share2` |
+
+`{{RELATIVEPATH(n)}}` zaehlt von hinten: `0` ist das letzte Segment, `1` sind die letzten zwei Segmente, `2` die letzten drei Segmente usw. `{{ROOT_PATH(n)}}` verwendet dagegen die letzten `n` Segmente des RootPath.
+
+`{{ROOT_*}}` bezieht sich immer auf den konfigurierten `RootPath`. `{{SERVER_NAME}}`, `{{DFS_NAMESPACE_NAME}}` und `{{SHARE_NAME}}` werden dagegen anhand der NTFS-Pfadklassifizierung des aktuell verarbeiteten Pfads ermittelt. Bei einem klassischen Share ist `{{SHARE_NAME}}` der Share. Bei DFS ist `{{DFS_NAMESPACE_NAME}}` der Namespace und `{{SHARE_NAME}}` der DFS-Link.
+
+Wenn die aktuelle DataArea dem `RootPath` selbst entspricht, ist `{{RELATIVEPATH}}` leer. `{{NAME}}` ist dann der Name des RootPath, also z. B. `share2` oder `LEI.01.test`.
+
+### Rollen- und Scope-Platzhalter
+
+Diese Platzhalter werden aus Rolle, Scope und `CustomTags` aufgebaut:
+
+| Platzhalter | Wirkung | Typische Werte |
+| --- | --- | --- |
+| `{{PREFIX}}` | Gruppenprefix aus `Filesystem_GroupPrefixTag`, fallback auf `ADGroupPrefix`. | `ACL`, `FS` |
+| `{{SCOPETAG}}` | Scope-Tag. Bei `Global` aus `Filesystem_GroupGlobalTag`, bei `DomainLocal` aus `Filesystem_GroupDomainLocalTag`. | `UG`, `FS`, `G`, `DL` |
+| `{{GROUPTYPEPOSTFIX}}` | Rollen-Postfix. Owner/Write/Read/Traverse verwenden die jeweiligen `Filesystem_Group*Tag` Werte. | `_OW`, `_RW`, `_R`, `_T` |
+| `{{_LOOP}}` | Optionaler Eindeutigkeitszaehler. Beim ersten Versuch leer, danach `_1`, `_2`, usw. | leer, `_1`, `_2` |
+| `{{LOOP}}` | Variante ohne Trennzeichen. Beim ersten Versuch leer, danach `1`, `2`, usw. | leer, `1`, `2` |
+
+Der Loop-Platzhalter ist flexibel: Alles innerhalb der geschweiften Klammern, das `LOOP` enthaelt, wird als Loop-Tag behandelt. `{{-LOOP}}` wird beim ersten Versuch leer und danach z. B. `-1`.
+
+### CustomTags
+
+Alle Eintraege aus `CustomTags` koennen ebenfalls direkt verwendet werden. Die Schreibweise muss exakt zum Key passen.
+
+Beispiele:
+
+```text
+{{ADGroupPrefix}}_{{RELATIVEPATH}}{{GROUPTYPEPOSTFIX}}
+{{Filesystem_GroupGlobalTag}}_{{ROOT_NAME}}_{{NAME}}{{GROUPTYPEPOSTFIX}}
+{{Filesystem_GroupDomainLocalTag}}_{{ROOT_PATH(1)}}_{{RELATIVEPATH}}{{GROUPTYPEPOSTFIX}}
+```
+
+### Beispiele fuer NamingTemplate
+
+Share-basierte Gruppen nur mit Share-Name:
+
+```text
+{{SCOPETAG}}_{{NAME}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+```
+
+Bei `RootPath=\\intra.brkr.corp\File_Shares\LEI.01.test`, Scope `DomainLocal`, `Filesystem_GroupDomainLocalTag=FS` und Rolle `Owner` entsteht:
+
+```text
+FS_LEI.01.TEST_OW
+```
+
+Gruppen fuer Unterordner relativ zum Root:
+
+```text
+{{SCOPETAG}}_{{RELATIVEPATH}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+```
+
+Bei `RootPath=\\SRVWSM001.imagoverum.com\file_shares\share2` und DataArea `...\share2\test33` entsteht fuer Owner:
+
+```text
+FS_TEST33_OW
+```
+
+Root-Share und Unterordner kombinieren:
+
+```text
+{{SCOPETAG}}_{{ROOT_NAME}}.{{RELATIVEPATH}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+```
+
+Bei Root `share2` und Ordner `test33` entsteht:
+
+```text
+FS_SHARE2.TEST33_OW
+```
+
+Nur die letzten zwei relativen Pfadsegmente verwenden:
+
+```text
+{{SCOPETAG}}_{{RELATIVEPATH(1)}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+```
+
+Bei `...\share2\team1\test33` entsteht:
+
+```text
+FS_TEAM1_TEST33_OW
+```
+
+Namespace-/Share-Bestandteile aus dem RootPath verwenden:
+
+```text
+{{SCOPETAG}}_{{ROOT_SEGMENT(0)}}_{{ROOT_SEGMENT(1)}}_{{NAME}}{{GROUPTYPEPOSTFIX}}
+```
+
+Bei Root `\\SRVWSM001.imagoverum.com\file_shares\share2` und Name `test33` entsteht:
+
+```text
+FS_FILE_SHARES_SHARE2_TEST33_OW
+```
+
+### Beispiele fuer AGP und AGDLP
+
+Bei AGP liegen die Global-Gruppen direkt auf der ACL. Eine typische Konvention ist:
+
+```text
+NamingTemplate: {{SCOPETAG}}_{{NAME}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+Scope: Global
+```
+
+Bei AGDLP liegen die DomainLocal-Gruppen auf der ACL, die Global-Gruppen werden darin verschachtelt. Typisch ist:
+
+```text
+Global NamingTemplate:      {{SCOPETAG}}_{{NAME}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+DomainLocal NamingTemplate: {{SCOPETAG}}_{{NAME}}{{_LOOP}}{{GROUPTYPEPOSTFIX}}
+```
+
+Mit `Filesystem_GroupGlobalTag=UG` und `Filesystem_GroupDomainLocalTag=FS` entstehen z. B.:
+
+```text
+UG_LEI.01.TEST_OW
+FS_LEI.01.TEST_OW
+```
+
+In diesem Fall gehoert bei AGDLP die `FS_...` DomainLocal-Gruppe auf die NTFS-ACL; `UG_...` wird Mitglied der `FS_...` Gruppe.
+
+### Wildcard-Regeln
+
+`Wildcard` ist eine regulaere Expression. Sie muss nach Platzhalterersetzung zum erzeugten oder vorhandenen `sAMAccountName` passen.
+
+Passendes Beispiel:
+
+```text
+^{{SCOPETAG}}_[a-zA-ZoeaeueOeAeUess0-9_\-\.]*{{GROUPTYPEPOSTFIX}}$
+```
+
+Mit `SCOPETAG=FS` und `GROUPTYPEPOSTFIX=_OW` matcht das:
+
+```text
+FS_LEI.01.TEST_OW
+```
+
+Nicht passend ist ein fuehrendes Leerzeichen:
+
+```text
+^ {{SCOPETAG}}_[a-zA-ZoeaeueOeAeUess0-9_\-\.]*{{GROUPTYPEPOSTFIX}}$
+```
+
+Dieser Regex erwartet nach `^` ein Leerzeichen und matcht deshalb nicht auf `FS_LEI.01.TEST_OW`.
+
+Wenn eine Traverse-Naming-Convention keine Gruppe erzeugen soll, kann das `NamingTemplate` leer bleiben. Fuer Owner/Write/Read sollte der `Wildcard` nicht leer sein. Ein leerer Regex ist keine sinnvolle Matching-Regel, weil er technisch sehr breit matchen kann.
+
+### Sanitizing, Laenge und Grossschreibung
+
+Pfadbasierte Platzhalter wie `{{NAME}}`, `{{RELATIVEPATH}}`, `{{ROOT_PATH}}` und `{{ROOT_SEGMENT(n)}}` werden fuer AD-Gruppennamen bereinigt. Standardmaessig werden Steuerzeichen und die fuer AD-Gruppennamen bzw. `sAMAccountName` problematischen Zeichen `/`, `\`, `[`, `]`, `:`, `;`, `|`, `=`, `,`, `+`, `*`, `?`, `<` und `>` mit `_` ersetzt. Das Ersatzzeichen kann ueber `NtfsGroupNameSanitizeReplacement` geaendert oder entfernt werden. Zeichen wie Leerzeichen, Bindestrich, Punkt, Unterstrich, Klammern, `@` und Quotes bleiben erhalten.
+
+Generierte AD-Gruppennamen werden standardmaessig in Grossbuchstaben geschrieben. Mit `PreserveNtfsAdGroupNameCase=1` bleibt die Schreibweise erhalten.
+
+AD-Gruppennamen werden auf die maximale Laenge von 64 Zeichen begrenzt. Wenn ein Template mit `{{RELATIVEPATH}}` oder `{{NAME}}` zu lang wird, werden Pfadbestandteile gekuerzt. Fuer Loop-Platzhalter werden bis zu drei Ziffern reserviert.
+
 ## AdditionalParameters / AdditionalConfiguration
 
 Provider-spezifische Zusatzparameter werden in Matrix42 am DataArea-Collector ueber das Fragment `C4IT_GCC_DataArea_Collector_AdditionalAttributes` gepflegt. Pro Parameter wird ein Eintrag mit `Name` und `Value` angelegt.
@@ -25,13 +210,18 @@ Im Diagnose-JSON erscheinen diese Werte unter `AdditionalConfiguration`. Paramet
 | --- | --- | --- |
 | `EnsureNtfsPermissionGroups` | `true`, `1`, `yes` | Stellt beim Auslesen von NTFS-Ordnern automatisch fehlende AD-Berechtigungsgruppen und NTFS-ACLs sicher. |
 | `EnsureNtfsPermissionGroupsForShares` | `true`, `1`, `yes` | Erweitert das automatische Ensure auf Share-DataAreas. Ohne diesen Parameter wird das automatische Ensure nur fuer Ordner ausgefuehrt. |
+| `EnsureNtfsTraverseGroups` | `true`, `1`, `yes` | Aktiviert die automatische Traverse-Gruppenverarbeitung als eigene Phase. Traverse-Gruppen und Traverse-ACLs werden sichergestellt; vorhandene LIAM-Owner/Write/Read-Globalgruppen werden in die naechste Traverse-Gruppe aufgenommen. |
 | `AllowManualNtfsPermissionEnsureForShares` | `true`, `1`, `yes` | Erlaubt die manuelle Ensure-Aktivitaet auch fuer Share-DataAreas. |
 | `NtfsIncludePaths` | Pfadliste, getrennt mit `;`, &#124; oder Zeilenumbruechen | Beschraenkt die NTFS-Verarbeitung auf passende Pfade. Unterstuetzt relative Pfade unterhalb des RootPath, absolute UNC-Pfade und einfache Wildcards mit `*`. Wenn der Parameter leer ist, sind alle Pfade eingeschlossen. |
 | `NtfsExcludePaths` | Pfadliste, getrennt mit `;`, &#124; oder Zeilenumbruechen | Schliesst passende Pfade von der NTFS-Verarbeitung aus. Excludes gewinnen gegen Includes. Unterstuetzt relative Pfade, absolute UNC-Pfade und einfache Wildcards mit `*`. |
-| `NtfsTraverseBoundaryPath` | Relativer oder absoluter Pfad | Setzt eine Traverse-Grenze fuer die Traverse-Gruppenverarbeitung. Damit koennen Traverse-Gruppen ueber den eigentlichen Einsprung hinaus bis zu einer definierten Ebene sichergestellt werden. |
+| `NtfsTraverseBoundaryPath` | Relativer oder absoluter Pfad | Setzt eine Traverse-Grenze fuer die Traverse-Gruppenverarbeitung. Damit koennen Traverse-Gruppen ueber den eigentlichen Einsprung hinaus bis zu einer definierten Ebene sichergestellt werden. Der Boundary-Pfad selbst darf ebenfalls als Traverse-Ziel verarbeitet werden. Wenn der Parameter leer ist, verwendet LIAM den `RootPath` als Traverse-Grenze. |
+| `NtfsPermissionGroupsMinLevel` / `NtfsPermissionGroupsMaxLevel` | Ganzzahl, z. B. `0`, `1`, `2` | Optionaler Levelbereich fuer Owner/Write/Read-Ensure. Ebene `0` ist der `RootPath`; Unterordner sind `1`, `2`, `3`, ... Wenn beide Parameter leer sind, bleibt das bisherige Verhalten unveraendert. |
+| `NtfsTraverseGroupsMinLevel` / `NtfsTraverseGroupsMaxLevel` | Ganzzahl, z. B. `-1`, `0`, `2` | Optionaler Levelbereich fuer Traverse-Ensure. Ebene `0` ist der `RootPath`; Parent-Pfade oberhalb des `RootPath` sind `-1`, `-2`, ... Wenn `NtfsTraverseGroupsMaxLevel` nicht gesetzt ist, wird fuer Traverse implizit `MaxDepth - 1` verwendet. |
 | `NtfsGroupNameSanitizeReplacement` | Zeichenfolge, z. B. `_`, `.`, leer, `none`, `remove`, `<empty>` | Legt fest, womit ungueltige Zeichen in dynamischen gruppennamenrelevanten Pfadbestandteilen ersetzt werden. Standard ist `_`. Mit leerem Wert oder `none`/`remove`/`<empty>` werden ungueltige Zeichen entfernt und Pfadsegmente ohne Trennzeichen verbunden. |
 | `PreserveNtfsAdGroupNameCase` | `true`, `1`, `yes` | Unterbindet das automatische Uppercase fuer generierte NTFS-AD-Gruppennamen. Ohne diesen Parameter werden generierte Gruppennamen wie bisher in Grossbuchstaben erzeugt. |
 | `ForceStrictAdGroupNames` | `true`, `1`, `yes` | Erzwingt strikte AD-Gruppennamen. Wildcard-/ACL-basierte Wiederverwendung abweichender bestehender Gruppen wird damit eingeschraenkt; es werden nur exakt passende konfigurierte oder generierte Namen verwendet. |
+| `NtfsAdGroupReuseMode` | `Safe`, `Name` | Steuert die Wiederverwendung vorhandener AD-Gruppen im automatischen Ensure. Standard ist `Safe`: vorhandene Gruppen werden nur wiederverwendet, wenn sie bereits passend auf der Ordner-ACL liegen oder einen passenden LIAM-Marker im AD-Attribut `info` besitzen. `Name` erlaubt die Legacy-Wiederverwendung nur anhand des Namens und wird als unsicherer Modus geloggt. |
+| `NtfsAdGroupMarkerBackfill` | `true`, `1`, `yes` | Ergaenzt bei sicher wiederverwendeten, ACL-verknuepften Gruppen einen LIAM-Marker im AD-Attribut `info`, sofern das Attribut les- und schreibbar ist. |
 | `NtfsAdDomainControllers` | Kommagetrennte DC-Liste, z. B. `dc01.contoso.local,dc02.contoso.local` | Pinnt NTFS-AD-Operationen auf einen Domain Controller. Der erste erreichbare DC wird verwendet. Wenn kein Eintrag erreichbar ist oder der Parameter fehlt, wird der PDC Emulator verwendet; danach faellt der Code auf die normale Domain-Locator-Logik zurueck. Der ausgewaehlte DC wird im Debug-Log protokolliert. |
 
 Beispiele:
@@ -39,14 +229,79 @@ Beispiele:
 ```text
 EnsureNtfsPermissionGroups=1
 EnsureNtfsPermissionGroupsForShares=1
+EnsureNtfsTraverseGroups=1
 NtfsIncludePaths=Finance\*;HR\Reports
 NtfsExcludePaths=*\_archive\*
 NtfsTraverseBoundaryPath=\\fileserver\file_shares
+NtfsPermissionGroupsMinLevel=1
+NtfsPermissionGroupsMaxLevel=2
+NtfsTraverseGroupsMinLevel=-1
+NtfsTraverseGroupsMaxLevel=2
 NtfsGroupNameSanitizeReplacement=.
 PreserveNtfsAdGroupNameCase=1
 NtfsAdDomainControllers=dc01.contoso.local,dc02.contoso.local
 ```
 
+#### Automatisches NTFS-Ensure
+
+Beim Auslesen der NTFS-DataAreas kann LIAM Gruppen und ACLs automatisch sicherstellen. Die automatische Verarbeitung ist bewusst fehlertolerant: Wenn ein einzelner DataArea-Pfad wegen Whitelist, Blacklist, fehlendem Verzeichnis oder Providerfehler nicht verarbeitet werden kann, wird dieser Pfad im Log als Warning uebersprungen und die naechste DataArea weiter verarbeitet.
+
+Die Schalter koennen kombiniert werden:
+
+| Konfiguration | Verhalten |
+| --- | --- |
+| `EnsureNtfsPermissionGroups=1` | Erstellt oder reused Owner/Write/Read-Gruppen und setzt die passenden NTFS-ACLs fuer Ordner. Das bestehende Verhalten mit eingebetteter Traverse-Verarbeitung bleibt aktiv, solange `EnsureNtfsTraverseGroups` nicht gesetzt ist. |
+| `EnsureNtfsPermissionGroups=1` und `EnsureNtfsPermissionGroupsForShares=1` | Wie oben, aber auch fuer Share-DataAreas. |
+| `EnsureNtfsTraverseGroups=1` | Fuehrt eine separate Traverse-only-Phase fuer Ordner und Share-DataAreas aus. Es werden Traverse-Gruppen und Traverse-ACLs sichergestellt, aber keine Owner/Write/Read-Gruppen erzeugt. |
+| `EnsureNtfsPermissionGroups=1` und `EnsureNtfsTraverseGroups=1` | Fuehrt zuerst Owner/Write/Read-Ensure aus und danach die separate Traverse-only-Phase. Dadurch koennen neu angelegte Owner/Write/Read-Globalgruppen direkt in die Traverse-Gruppen aufgenommen werden. Die eingebettete Traverse-Verarbeitung im Permission-Ensure wird in diesem Modus deaktiviert, damit Traverse nicht doppelt laeuft. |
+
+Traverse-only sucht die erwarteten LIAM-Owner/Write/Read-Gruppen anhand der Naming-Conventions und bestehenden ACLs. Gefunden werden nur LIAM-Gruppen, die zur konfigurierten Wildcard passen; beliebige Legacy-ACL-Gruppen werden nicht automatisch als Traverse-Mitglieder uebernommen. Fehlende Owner/Write/Read-Gruppen werden in Traverse-only nicht angelegt, sondern als Warning protokolliert.
+
+Fuer AGP werden die Global-Gruppen auf der ACL und als Traverse-Mitglieder verwendet. Fuer AGDLP liegen weiterhin die DomainLocal-Gruppen auf der NTFS-ACL; die Traverse-Mitgliedschaft verwendet die zugehoerigen Global-Gruppen.
+
+Traverse-Gruppen werden lazy erzeugt: LIAM legt eine Traverse-Gruppe fuer einen Pfad nur dann an, wenn darunter mindestens eine LIAM-Owner/Write/Read-Gruppe oder eine darunterliegende Traverse-Gruppe aufgenommen werden soll. Bestehende Traverse-Gruppen werden weiterverwendet, leere neue Traverse-Gruppen ohne aktuelle Mitglieder werden aber nicht vorsorglich erzeugt.
+
+#### Traverse-Grenze
+
+`NtfsTraverseBoundaryPath` begrenzt, bis zu welcher Ebene Traverse-Gruppen und Traverse-ACLs sichergestellt werden. Wenn der Parameter nicht gesetzt ist, verwendet LIAM den `RootPath` als Traverse-Grenze. Damit darf die Traverse-Verarbeitung standardmaessig auch Parent-Pfade oberhalb des Include-Filters erreichen, solange der Pfad existiert und nicht durch `NtfsExcludePaths` ausgeschlossen ist.
+
+Beispiel:
+
+```text
+RootPath=\\intra.brkr.corp\File_Shares\BRE.01.LEW
+NtfsIncludePaths=\\intra.brkr.corp\File_Shares\BRE.01.LEW\Projekte\*
+EnsureNtfsTraverseGroups=1
+```
+
+In diesem Beispiel ist keine explizite Boundary noetig, weil `RootPath` automatisch als Traverse-Grenze verwendet wird. Dadurch koennen Traverse-Gruppen fuer `...\BRE.01.LEW`, `...\Projekte` und die Ordner darunter sichergestellt werden, sobald darunter Berechtigungsgruppen oder weitere Traverse-Gruppen aufzunehmen sind. Ein abweichender `NtfsTraverseBoundaryPath` ist nur noetig, wenn die Traverse-Verarbeitung bewusst oberhalb oder unterhalb des `RootPath` enden soll.
+
+#### Levelbereiche fuer Ensure und Ordneranlage
+
+Die optionalen Levelbereiche schraenken ein, auf welchen Ebenen Gruppen und ACLs automatisch sichergestellt werden. Wenn keine Permission-Level-Parameter gesetzt sind, bleibt Owner/Write/Read unveraendert. Fuer Traverse wird ohne explizites `NtfsTraverseGroupsMaxLevel` automatisch `MaxDepth - 1` als maximale Verarbeitungsebene verwendet.
+
+Ebene `0` ist immer der konfigurierte `RootPath`. Unterordner unterhalb des `RootPath` haben positive Level (`1`, `2`, `3`, ...). Parent-Pfade oberhalb des `RootPath` haben negative Level (`-1`, `-2`, ...). Negative Level sind vor allem fuer Traverse relevant, wenn `NtfsTraverseBoundaryPath` oberhalb des `RootPath` liegt.
+
+Beispiel:
+
+```text
+RootPath=\\server\share\Bereich
+NtfsTraverseBoundaryPath=\\server\share
+NtfsPermissionGroupsMinLevel=1
+NtfsPermissionGroupsMaxLevel=2
+NtfsTraverseGroupsMinLevel=-1
+NtfsTraverseGroupsMaxLevel=2
+```
+
+Damit werden Owner/Write/Read-Gruppen nur fuer `\\server\share\Bereich\...` auf Ebene `1` und `2` erzeugt. Traverse-Gruppen duerfen zusaetzlich bis zum Share auf Ebene `-1` erzeugt werden. `NtfsTraverseBoundaryPath` bleibt die harte Grenze fuer Traverse; die Min-/Max-Level legen nur fest, welche Ebenen innerhalb dieses Korridors verarbeitet werden.
+
+Die Permission-Level gelten auch fuer die explizite NTFS-Ordneranlage ueber `CreateDataArea`. Wenn der Zielordner ausserhalb des Permission-Levelbereichs liegt oder die Permission-Levelkonfiguration ungueltig ist, wird die Ordneranlage vor AD-/ACL-Aenderungen abgebrochen. Traverse-Level blockieren die Ordneranlage nicht; sie schraenken nur die Traverse-Gruppen und Traverse-ACLs ein.
+
+Wenn nur ein Min- oder Max-Wert gesetzt ist, ist die andere Seite offen. Ausnahme: Fuer Traverse ist ein fehlender Max-Wert durch `MaxDepth - 1` begrenzt. Ungueltige Werte oder ein Min-Wert groesser als der Max-Wert fuehren dazu, dass die betroffene Ensure-Phase mit einer Warning uebersprungen wird; bei `CreateDataArea` fuehrt eine ungueltige Permission-Levelkonfiguration zum Abbruch vor der Anlage.
+
+#### WhatIf / Preview
+
+Wenn `WhatIf=1` gesetzt ist, fuehrt LIAM die automatische NTFS-Verarbeitung als Preview aus. Fuer Permission-Ensure und Traverse-Ensure werden geplante Gruppen, wiederverwendete Gruppen, geplante ACLs, bestehende ACLs, Traverse-Gruppen und Warnings im Ergebnis und im Debug-Log ausgegeben. Es werden keine AD-Gruppen, Gruppenmitgliedschaften oder ACLs dauerhaft geaendert.
+
 ### Active Directory
 
 | Parameter | Werte | Wirkung |

SharedAssemblyInfo.cs

@@ -7,5 +7,5 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyCopyright("Copyright © 2026, Consulting4IT GmbH, Germany")]
 [assembly: AssemblyTrademark("")]
 
-[assembly: AssemblyInformationalVersion("3.3.1")]
-[assembly: AssemblyVersion("3.3.1")]
+[assembly: AssemblyInformationalVersion("3.3.5")]
+[assembly: AssemblyVersion("3.3.5")]

Sonstiges/New-LiamNtfsDemoShareStructure.ps1

@@ -0,0 +1,695 @@
+<#
+.SYNOPSIS
+Creates a local LIAM NTFS demo fixture with folders and ACL groups from a production log.
+
+.DESCRIPTION
+This script recreates the BRE.01.LEW/Projekte folder and ACL-group fixture from
+the diagnostic log in the local imagoverum.com demo environment:
+
+- local folder: C:\file_shares\share2
+- optional SMB share: \\<local-server>\file_shares\share2
+- group strategy: Ntfs_AGDLP
+- group tags: FS for global groups, UG for domain-local groups
+- access tags: _O, _W, _R, _T
+
+By default the script creates the exact folders visible in the log and creates
+the logged ACL groups in the configured OU, then grants them Read permissions
+on the matching local folders. Expected LIAM groups can be created separately
+with -CreateExpectedLiamGroups.
+
+Run with -WhatIf first. The ActiveDirectory module is only required when
+AD group creation and ACL assignment are enabled.
+#>
+
+[CmdletBinding(SupportsShouldProcess = $true)]
+param(
+    [string]$ShareRootPath = 'C:\file_shares',
+
+    [string]$RootFolderName = 'share2',
+
+    [string]$SmbShareName = 'file_shares',
+
+    [string]$GroupOuDN = 'OU=AGP,OU=LIAM,OU=Global,DC=imagoverum,DC=com',
+
+    [string[]]$AdditionalFolderRelativePaths = @(),
+
+    [string]$GroupNameSanitizeReplacement = '_',
+
+    [switch]$PreserveAdGroupNameCase,
+
+    [switch]$CreateExpectedLiamGroups,
+
+    [switch]$SkipLogAclFixture,
+
+    [switch]$SkipAdGroups,
+
+    [switch]$SkipNtfsAcl,
+
+    [switch]$SkipSmbShare
+)
+
+Set-StrictMode -Version Latest
+$ErrorActionPreference = 'Stop'
+
+if ([System.Environment]::OSVersion.Platform -ne [System.PlatformID]::Win32NT) {
+    throw 'Dieses Script kann nur unter Windows ausgefuehrt werden.'
+}
+
+$rootPath = Join-Path -Path $ShareRootPath -ChildPath $RootFolderName
+$readRights = [System.Security.AccessControl.FileSystemRights]0x200A9
+$writeRights = [System.Security.AccessControl.FileSystemRights]0x301BF
+$ownerRights = [System.Security.AccessControl.FileSystemRights]0x1F01FF
+
+$logFolderRelativePaths = @(
+    'Arbeitsgruppen',
+    'Quartalsplanungen',
+    'Projekte',
+    'Projekte\__Templ',
+    'Projekte\_BAMS_AD Projekte',
+    'Projekte\__Admin Only',
+    'Projekte\_LSMS_AD Projekte',
+    'Projekte\_SW Projekte',
+    'Projekte\_AD Projekte',
+    'Projekte\_Templ_BMID',
+    'Projekte\_HW Projekte',
+    'Projekte\_IVD_Projekte',
+    'ProjekteAbgeschlossen',
+    'RESTORE',
+    'Design Control Harmonization',
+    'PMO'
+)
+
+$logAclFixtures = @(
+    @{
+        RelativePath = ''
+        Groups = @(
+            'UG_BRE.BDAL.DE.Users',
+            'DALDE-gArchimedesLEW_ALL_RO',
+            'DALDE-gArchimedesLEW_Admins',
+            'DALDE-gArchimedesLEW_Projekte_Browse',
+            'UG_BRE.01',
+            'FS_BRE.01.Archimedes_LEW-RW',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte'
+        Groups = @(
+            'UG_BRE.BDAL.DE.Users',
+            'DALDE-gArchimedesLEW_AccessGroup_PAW',
+            'DALDE-gArchimedesLEW_AccessGroup_SVC',
+            'DALDE-gArchimedesLEW_AccessGroup_TER',
+            'DALDE-gArchimedesLEW_ALL_RO',
+            'DALDE-gArchimedesLEW_Admins',
+            'DALDE-gArchimedesLEW_AccessGroup_PRM',
+            'DALDE-gArchimedesLEW_AccessGroup_QS',
+            'DALDE-gArchimedesLEW_AccessGroup_WB',
+            'DALDE-gArchimedesLEW_RO_Leipzig',
+            'DALDE-gArchimedesLEW_AccessGroup_BOM_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_EEL',
+            'DALDE-gArchimedesLEW_AccessGroup_TPS',
+            'DALDE-gArchimedesLEW_RW',
+            'DALDE-gArchimedesLEW_AccessGroup_KST',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_Only',
+            'DALDE-_Autocad',
+            'DALDE-gArchimedesLEW_AccessGroup_APP',
+            'DALDE-gArchimedesLEW_Projekte_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_HW',
+            'DALDE-gArchimedesLEW_AccessGroup_EPT',
+            'DALDE-gArchimedesLEW_Projekte_Browse',
+            'UG_BRE.01',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\__Templ'
+        Groups = @(
+            'UG_BRE.BDAL.DE.Users',
+            'DALDE-gArchimedesLEW_Projekte_Browse',
+            'UG_BRE.01',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_APP',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_GL',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_EEl',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_EpT',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_ESw',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_G&L',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_KSt',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_PRM',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_QS',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_Svc',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_TeR',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_TPS',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_RA_LSMS',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_Proc',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_BD',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_Mark',
+            'FG_BRE.01.ArchimedesLEW_AccessGroup_Fin',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_BAMS_AD Projekte'
+        Groups = @(
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\__Admin Only'
+        Groups = @(
+            'DALDE-gArchimedesLEW_Admins',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_LSMS_AD Projekte'
+        Groups = @(
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_SW Projekte'
+        Groups = @(
+            'DALDE-gArchimedesLEW_AccessGroup_PAW',
+            'DALDE-gArchimedesLEW_AccessGroup_SVC',
+            'DALDE-gArchimedesLEW_SWProjekte_RW',
+            'DALDE-gArchimedesLEW_AccessGroup_TER',
+            'DALDE-gArchimedesLEW_ManagerSW_RW',
+            'DALDE-gArchimedesLEW_Admins',
+            'DALDE-gArchimedesLEW_AccessGroup_PRM',
+            'DALDE-gArchimedesLEW_AccessGroup_QS',
+            'DALDE-gArchimedesLEW_AccessGroup_WB',
+            'DALDE-gArchimedesLEW_SWProjekte_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_BOM_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_EEL',
+            'DALDE-gArchimedesLEW_AccessGroup_TPS',
+            'DALDE-gArchimedesLEW_AccessGroup_KST',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_Only',
+            'DALDE-gArchimedesLEW_AccessGroup_APP',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_HW',
+            'DALDE-gArchimedesLEW_AccessGroup_EPT',
+            'DALDE-gArchimedesLEW_Projekte_Browse',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_AD Projekte'
+        Groups = @(
+            'UG_BRE.BDAL.DE.Users',
+            'DALDE-gArchimedesLEW_AccessGroup_PAW',
+            'DALDE-gArchimedesLEW_AccessGroup_SVC',
+            'DALDE-gArchimedesLEW_AccessGroup_TER',
+            'DALDE-gArchimedesLEW_ALL_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_PRM',
+            'DALDE-gArchimedesLEW_AccessGroup_QS',
+            'DALDE-gArchimedesLEW_AccessGroup_WB',
+            'DALDE-gArchimedesLEW_RO_Leipzig',
+            'DALDE-gArchimedesLEW_AccessGroup_BOM_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_EEL',
+            'DALDE-gArchimedesLEW_AccessGroup_TPS',
+            'DALDE-gArchimedesLEW_RW',
+            'DALDE-gArchimedesLEW_AccessGroup_KST',
+            'DALDE-gArchimedesLEW_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_Only',
+            'DALDE-_Autocad',
+            'DALDE-gArchimedesLEW_AccessGroup_APP',
+            'DALDE-gArchimedesLEW_Projekte_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_HW',
+            'DALDE-gArchimedesLEW_AccessGroup_EPT',
+            'DALDE-gArchimedesLEW_Projekte_Browse',
+            'UG_BRE.01',
+            'FS_BRE.01.Archimedes_LEW_Projekte_AD Projekte RW',
+            'FS_BRE.01.Archimedes_LEW_Projekte_AD Projekte RO',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_Templ_BMID'
+        Groups = @(
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_HW Projekte'
+        Groups = @(
+            'DALDE-gArchimedesLEW_AccessGroup_PAW',
+            'DALDE-gArchimedesLEW_AccessGroup_SVC',
+            'DALDE-gArchimedesLEW_AccessGroup_FSt',
+            'DALDE-gArchimedesLEW_ManagerHW_RW',
+            'DALDE-gArchimedesLEW_AccessGroup_GL',
+            'DALDE-gArchimedesLEW_AccessGroup_TER',
+            'DALDE-gArchimedesLEW_AccessGroup_EBIO',
+            'DALDE-gArchimedesLEW_AccessGroup_PRM',
+            'DALDE-gArchimedesLEW_HWProjekt_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_QS',
+            'DALDE-gArchimedesLEW_AccessGroup_WB',
+            'DALDE-gArchimedesLEW_AccessGroup_BOM_RO',
+            'DALDE-gArchimedesLEW_HWProjekt_RFAP1_RO',
+            'DALDE-gArchimedesLEW_AccessGroup_EEL',
+            'DALDE-gArchimedesLEW_AccessGroup_TPS',
+            'DALDE-gArchimedesLEW_AccessGroup_KST',
+            'DALDE-gArchimedesLEW_AccessGroup_APP',
+            'DALDE-gArchimedesLEW_AccessGroup_ESW_SW_HW',
+            'DALDE-gArchimedesLEW_AccessGroup_EPT',
+            'DALDE-gArchimedesLEW_Projekte_Browse',
+            'UG_BRE.01.ArchimedesLEW_Projekte_HW Projekte RW',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    },
+    @{
+        RelativePath = 'Projekte\_IVD_Projekte'
+        Groups = @(
+            'DALDE-gArchimedesLEW_IVD_Projekte_RW',
+            'FS_BRE.01.ArchimedesLEW_Projekte_IVD Projekte RW',
+            'FS_BRE.01.ArchimedesLEW_Projekte_IVD Projekte RO',
+            'AG_ETT.01.File Server Administrators_Restricted'
+        )
+    }
+)
+
+function ConvertTo-LiamSafeNameSegment {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Value,
+
+        [Parameter(Mandatory = $true)]
+        [string]$Replacement,
+
+        [Parameter(Mandatory = $true)]
+        [bool]$PreserveCase
+    )
+
+    $safeReplacement = if ($null -eq $Replacement) { '_' } else { $Replacement.Trim() }
+    if ($safeReplacement -in @('<empty>', 'empty', 'none', 'remove')) {
+        $safeReplacement = ''
+    }
+    if ([string]::IsNullOrWhiteSpace($safeReplacement) -and $Replacement -notin @('<empty>', 'empty', 'none', 'remove')) {
+        $safeReplacement = '_'
+    }
+
+    $safeValue = [regex]::Replace($Value, '[\x00-\x1F\x7F/\\\[\]:;\|=,\+\*\?<>]', $safeReplacement)
+    if ($PreserveCase) {
+        return $safeValue
+    }
+
+    return $safeValue.ToUpperInvariant()
+}
+
+function Get-LiamFolderToken {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$FolderPath
+    )
+
+    $itemName = Split-Path -Path $FolderPath -Leaf
+    if ([string]::IsNullOrWhiteSpace($itemName)) {
+        $itemName = $RootFolderName
+    }
+
+    ConvertTo-LiamSafeNameSegment `
+        -Value $itemName `
+        -Replacement $GroupNameSanitizeReplacement `
+        -PreserveCase $PreserveAdGroupNameCase.IsPresent
+}
+
+function Get-LiamGroupSet {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$FolderPath
+    )
+
+    $name = Get-LiamFolderToken -FolderPath $FolderPath
+
+    [pscustomobject]@{
+        FolderPath     = $FolderPath
+        Name           = $name
+        GlobalOwner    = "FS_${name}_O"
+        GlobalWrite    = "FS_${name}_W"
+        GlobalRead     = "FS_${name}_R"
+        GlobalTraverse = "FS_${name}_T"
+        LocalOwner     = "UG_${name}_O"
+        LocalWrite     = "UG_${name}_W"
+        LocalRead      = "UG_${name}_R"
+    }
+}
+
+function Ensure-Folder {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Path
+    )
+
+    if (Test-Path -LiteralPath $Path) {
+        return
+    }
+
+    if ($PSCmdlet.ShouldProcess($Path, 'Create directory')) {
+        New-Item -ItemType Directory -Path $Path -Force | Out-Null
+    }
+}
+
+function Ensure-SmbShare {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Name,
+
+        [Parameter(Mandatory = $true)]
+        [string]$Path
+    )
+
+    $existingShare = Get-SmbShare -Name $Name -ErrorAction SilentlyContinue
+    if ($existingShare) {
+        if ($existingShare.Path -ne $Path) {
+            Write-Warning "SMB share '$Name' already points to '$($existingShare.Path)', not '$Path'."
+        }
+        return
+    }
+
+    if ($PSCmdlet.ShouldProcess($Name, "Create SMB share for '$Path'")) {
+        New-SmbShare -Name $Name -Path $Path -ChangeAccess 'Authenticated Users' | Out-Null
+    }
+}
+
+function ConvertTo-LdapFilterEscapedValue {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Value
+    )
+
+    $escapedValue = $Value.Replace('\', '\5c')
+    $escapedValue = $escapedValue.Replace('*', '\2a')
+    $escapedValue = $escapedValue.Replace('(', '\28')
+    $escapedValue = $escapedValue.Replace(')', '\29')
+    $escapedValue = $escapedValue.Replace([string][char]0, '\00')
+
+    return $escapedValue
+}
+
+function Get-AdGroupBySamAccountName {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$SamAccountName,
+
+        [string[]]$Properties = @()
+    )
+
+    $escapedSamAccountName = ConvertTo-LdapFilterEscapedValue -Value $SamAccountName
+    $parameters = @{
+        LDAPFilter  = "(sAMAccountName=$escapedSamAccountName)"
+        ErrorAction = 'Stop'
+    }
+
+    if ($Properties.Count -gt 0) {
+        $parameters['Properties'] = $Properties
+    }
+
+    try {
+        return Get-ADGroup @parameters | Select-Object -First 1
+    }
+    catch [Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException] {
+        return $null
+    }
+}
+
+function Ensure-AdGroup {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Name,
+
+        [Parameter(Mandatory = $true)]
+        [ValidateSet('Global', 'DomainLocal')]
+        [string]$Scope,
+
+        [Parameter(Mandatory = $true)]
+        [string]$Description
+    )
+
+    $existingGroup = Get-AdGroupBySamAccountName -SamAccountName $Name
+    if ($existingGroup) {
+        return $existingGroup
+    }
+
+    if ($PSCmdlet.ShouldProcess($Name, "Create AD group in '$GroupOuDN'")) {
+        New-ADGroup `
+            -Name $Name `
+            -SamAccountName $Name `
+            -GroupCategory Security `
+            -GroupScope $Scope `
+            -Path $GroupOuDN `
+            -Description $Description | Out-Null
+    }
+
+    return Get-AdGroupBySamAccountName -SamAccountName $Name
+}
+
+function Ensure-AdGroupMembership {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$ParentGroup,
+
+        [Parameter(Mandatory = $true)]
+        [string]$MemberGroup
+    )
+
+    $parent = Get-AdGroupBySamAccountName -SamAccountName $ParentGroup -Properties @('member')
+    $member = Get-AdGroupBySamAccountName -SamAccountName $MemberGroup
+    if (-not $parent -or -not $member) {
+        if ($WhatIfPreference) {
+            if ($PSCmdlet.ShouldProcess($ParentGroup, "Add member group '$MemberGroup'")) {
+            }
+            return
+        }
+
+        throw "Cannot add '$MemberGroup' to '$ParentGroup' because at least one group does not exist."
+    }
+
+    if ($parent.member -contains $member.DistinguishedName) {
+        return
+    }
+
+    if ($PSCmdlet.ShouldProcess($ParentGroup, "Add member group '$MemberGroup'")) {
+        Add-ADGroupMember -Identity $parent -Members $member
+    }
+}
+
+function Ensure-LiamGroups {
+    param(
+        [Parameter(Mandatory = $true)]
+        [pscustomobject]$GroupSet
+    )
+
+    $groups = @(
+        @{ Name = $GroupSet.GlobalOwner; Scope = 'Global';      Description = "$($GroupSet.Name) - _O" }
+        @{ Name = $GroupSet.GlobalWrite; Scope = 'Global';      Description = "$($GroupSet.Name) - _W" }
+        @{ Name = $GroupSet.GlobalRead;  Scope = 'Global';      Description = "$($GroupSet.Name) - _R" }
+        @{ Name = $GroupSet.LocalOwner;  Scope = 'DomainLocal'; Description = "$($GroupSet.Name) - _O" }
+        @{ Name = $GroupSet.LocalWrite;  Scope = 'DomainLocal'; Description = "$($GroupSet.Name) - _W" }
+        @{ Name = $GroupSet.LocalRead;   Scope = 'DomainLocal'; Description = "$($GroupSet.Name) - _R" }
+        @{ Name = $GroupSet.GlobalTraverse; Scope = 'Global';   Description = "$($GroupSet.Name) - _T" }
+    )
+
+    foreach ($group in $groups) {
+        Ensure-AdGroup -Name $group.Name -Scope $group.Scope -Description $group.Description | Out-Null
+    }
+
+    Ensure-AdGroupMembership -ParentGroup $GroupSet.LocalOwner -MemberGroup $GroupSet.GlobalOwner
+    Ensure-AdGroupMembership -ParentGroup $GroupSet.LocalWrite -MemberGroup $GroupSet.GlobalWrite
+    Ensure-AdGroupMembership -ParentGroup $GroupSet.LocalRead -MemberGroup $GroupSet.GlobalRead
+}
+
+function Ensure-LogAclFixtureGroups {
+    param(
+        [Parameter(Mandatory = $true)]
+        [object[]]$Fixtures
+    )
+
+    $groupNames = $Fixtures |
+        ForEach-Object { $_['Groups'] } |
+        Where-Object { -not [string]::IsNullOrWhiteSpace($_) } |
+        Sort-Object -Unique
+
+    foreach ($groupName in $groupNames) {
+        $groupScope = if ($groupName -like 'UG_*') { 'DomainLocal' } else { 'Global' }
+        Ensure-AdGroup `
+            -Name $groupName `
+            -Scope $groupScope `
+            -Description 'Source ACL group from BRE.01.LEW diagnostic log' | Out-Null
+    }
+}
+
+function Add-FolderAccessRule {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Path,
+
+        [Parameter(Mandatory = $true)]
+        [string]$Account,
+
+        [Parameter(Mandatory = $true)]
+        [System.Security.AccessControl.FileSystemRights]$Rights
+    )
+
+    if (-not (Test-Path -LiteralPath $Path)) {
+        if ($WhatIfPreference) {
+            if ($PSCmdlet.ShouldProcess($Path, "Add NTFS ACL '$Rights' for '$Account'")) {
+            }
+            return
+        }
+
+        throw "Path not found: $Path"
+    }
+
+    $acl = Get-Acl -LiteralPath $Path
+    $identity = [System.Security.Principal.NTAccount]::new($Account)
+    try {
+        $sid = $identity.Translate([System.Security.Principal.SecurityIdentifier])
+    }
+    catch [System.Security.Principal.IdentityNotMappedException] {
+        if ($WhatIfPreference) {
+            if ($PSCmdlet.ShouldProcess($Path, "Add NTFS ACL '$Rights' for '$Account'")) {
+            }
+            return
+        }
+
+        throw
+    }
+
+    foreach ($rule in $acl.Access) {
+        if ($rule.AccessControlType -ne [System.Security.AccessControl.AccessControlType]::Allow) {
+            continue
+        }
+        if ($rule.IdentityReference.Translate([System.Security.Principal.SecurityIdentifier]).Value -ne $sid.Value) {
+            continue
+        }
+        if (($rule.FileSystemRights -band $Rights) -eq $Rights) {
+            return
+        }
+    }
+
+    $accessRule = [System.Security.AccessControl.FileSystemAccessRule]::new(
+        $sid,
+        $Rights,
+        [System.Security.AccessControl.InheritanceFlags]'ContainerInherit,ObjectInherit',
+        [System.Security.AccessControl.PropagationFlags]::None,
+        [System.Security.AccessControl.AccessControlType]::Allow
+    )
+
+    $acl.AddAccessRule($accessRule)
+
+    if ($PSCmdlet.ShouldProcess($Path, "Add NTFS ACL '$Rights' for '$Account'")) {
+        Set-Acl -LiteralPath $Path -AclObject $acl
+    }
+}
+
+function Ensure-LiamNtfsAcl {
+    param(
+        [Parameter(Mandatory = $true)]
+        [pscustomobject]$GroupSet,
+
+        [Parameter(Mandatory = $true)]
+        [string]$DomainNetBiosName
+    )
+
+    Add-FolderAccessRule -Path $GroupSet.FolderPath -Account "$DomainNetBiosName\$($GroupSet.LocalOwner)" -Rights $ownerRights
+    Add-FolderAccessRule -Path $GroupSet.FolderPath -Account "$DomainNetBiosName\$($GroupSet.LocalWrite)" -Rights $writeRights
+    Add-FolderAccessRule -Path $GroupSet.FolderPath -Account "$DomainNetBiosName\$($GroupSet.LocalRead)" -Rights $readRights
+}
+
+function Ensure-LogAclFixtureAcls {
+    param(
+        [Parameter(Mandatory = $true)]
+        [object[]]$Fixtures,
+
+        [Parameter(Mandatory = $true)]
+        [string]$DomainNetBiosName
+    )
+
+    foreach ($fixture in $Fixtures) {
+        $relativePath = $fixture['RelativePath']
+        $folderPath = if ([string]::IsNullOrWhiteSpace($relativePath)) {
+            $rootPath
+        }
+        else {
+            Join-Path -Path $rootPath -ChildPath $relativePath
+        }
+
+        foreach ($groupName in ($fixture['Groups'] | Sort-Object -Unique)) {
+            Add-FolderAccessRule `
+                -Path $folderPath `
+                -Account "$DomainNetBiosName\$groupName" `
+                -Rights $readRights
+        }
+    }
+}
+
+$relativeFolders = @($logFolderRelativePaths + $AdditionalFolderRelativePaths) |
+    Where-Object { -not [string]::IsNullOrWhiteSpace($_) } |
+    ForEach-Object { $_.Trim().TrimStart('\', '/') } |
+    Sort-Object -Unique
+
+Ensure-Folder -Path $ShareRootPath
+Ensure-Folder -Path $rootPath
+
+foreach ($relativeFolder in $relativeFolders) {
+    Ensure-Folder -Path (Join-Path -Path $rootPath -ChildPath $relativeFolder)
+}
+
+if (-not $SkipSmbShare) {
+    Ensure-SmbShare -Name $SmbShareName -Path $ShareRootPath
+}
+
+$foldersToManage = @($rootPath)
+foreach ($relativeFolder in $relativeFolders) {
+    $foldersToManage += (Join-Path -Path $rootPath -ChildPath $relativeFolder)
+}
+
+$domainNetBiosName = $null
+if (-not $SkipAdGroups -or -not $SkipNtfsAcl) {
+    Import-Module ActiveDirectory -ErrorAction Stop
+    $domainNetBiosName = (Get-ADDomain).NetBIOSName
+}
+
+if (-not $SkipAdGroups -and -not $SkipLogAclFixture) {
+    Ensure-LogAclFixtureGroups -Fixtures $logAclFixtures
+}
+
+$summary = foreach ($folder in $foldersToManage) {
+    $groupSet = Get-LiamGroupSet -FolderPath $folder
+
+    if (-not $SkipAdGroups -and $CreateExpectedLiamGroups) {
+        Ensure-LiamGroups -GroupSet $groupSet
+    }
+
+    if (-not $SkipNtfsAcl -and $CreateExpectedLiamGroups) {
+        Ensure-LiamNtfsAcl -GroupSet $groupSet -DomainNetBiosName $domainNetBiosName
+    }
+
+    $relativePath = if ($folder -eq $rootPath) {
+        ''
+    }
+    else {
+        $folder.Substring($rootPath.Length).TrimStart('\')
+    }
+    $fixture = $logAclFixtures | Where-Object { $_['RelativePath'] -eq $relativePath } | Select-Object -First 1
+
+    [pscustomobject]@{
+        Folder             = $folder
+        LogAclGroupCount   = if ($fixture) { $fixture['Groups'].Count } else { 0 }
+        LocalOwnerAcl      = $groupSet.LocalOwner
+        LocalWriteAcl      = $groupSet.LocalWrite
+        LocalReadAcl       = $groupSet.LocalRead
+        GlobalOwner        = $groupSet.GlobalOwner
+        GlobalWrite        = $groupSet.GlobalWrite
+        GlobalRead         = $groupSet.GlobalRead
+        GlobalTraverse     = $groupSet.GlobalTraverse
+    }
+}
+
+if (-not $SkipNtfsAcl -and -not $SkipLogAclFixture) {
+    Ensure-LogAclFixtureAcls -Fixtures $logAclFixtures -DomainNetBiosName $domainNetBiosName
+}
+
+$summary
+
+Write-Host ''
+Write-Host 'LIAM provider RootPath for this machine:'
+Write-Host ("\\{0}\{1}\{2}" -f $env:COMPUTERNAME, $SmbShareName, $RootFolderName)