Fixed locations for directories

Set the location for created directories to be relative to the chroot directory instead of the home directory.
The user is now set as an owner on the first parent of directories relative to the chroot. (Ex: for "sftp/subdirectory" the user is now the owner of "sftp" recursively).

ES.SFTP.Host/Orchestrator.cs

@@ -348,26 +348,43 @@ private async Task PrepareUserForSftp(string username)
             await ProcessUtil.QuickRun("chmod", $"700 {homeDirPath}");
 
             var chroot = user.Chroot ?? _config.Global.Chroot;
+
+            //Parse chroot path by replacing markers
             var chrootPath = string.Join("%%h",
                 chroot.Directory.Split("%%h").Select(s => s.Replace("%h", homeDirPath)).ToList());
             chrootPath = string.Join("%%u",
                 chrootPath.Split("%%u").Select(s => s.Replace("%u", username)).ToList());
+
+            //Create chroot directory and set owner to root and correct permissions
+            if (!Directory.Exists(chrootPath)) Directory.CreateDirectory(chrootPath);
             await ProcessUtil.QuickRun("chown", $"root:root {chrootPath}");
             await ProcessUtil.QuickRun("chmod", $"755 {chrootPath}");
 
+            var chrootDirectory = new DirectoryInfo(chrootPath);
+
             var directories = new List<string>();
             directories.AddRange(_config.Global.Directories);
             directories.AddRange(user.Directories);
             foreach (var directory in directories.Distinct().OrderBy(s => s).ToList())
             {
-                var dirPath = Path.Combine(homeDirPath, directory);
+                var dirPath = Path.Combine(chrootDirectory.FullName, directory);
                 if (!Directory.Exists(dirPath))
                 {
                     _logger.LogDebug("Creating directory '{dir}' for user '{user}'", dirPath, username);
                     Directory.CreateDirectory(dirPath);
                 }
 
-                await ProcessUtil.QuickRun("chown", $"-R {username}:{SftpUserInventoryGroup} {dirPath}");
+                var directoryInfo = new DirectoryInfo(dirPath);
+
+                var firstParentInChroot = directoryInfo.Parent ?? chrootDirectory;
+                while ((firstParentInChroot.Parent ??
+                        throw new InvalidOperationException("Cannot find first parent in chroot")).FullName !=
+                       chrootDirectory.FullName)
+                {
+                    firstParentInChroot = firstParentInChroot.Parent;
+                }
+
+                await ProcessUtil.QuickRun("chown", $"-R {username}:{SftpUserInventoryGroup} {firstParentInChroot.FullName}");
             }
 
             var sshDir = Path.Combine(homeDirPath, ".ssh");