server/AyaNova/util/FileUtil.cs

@@ -274,20 +274,38 @@ namespace AyaNova.Util
 
         }
 
+        // /// <summary>
+        // /// DANGER: Erases all Utility files including backups etc
+        // /// </summary>
+        // internal static void EraseEntireContentsOfBackupFilesFolder()
+        // {
+        //     System.IO.DirectoryInfo di = new DirectoryInfo(BackupFilesFolder);
+        //     foreach (FileInfo file in di.EnumerateFiles())
+        //     {
+        //         file.Delete();
+        //     }
+        //     foreach (DirectoryInfo dir in di.EnumerateDirectories())
+        //     {
+        //         dir.Delete(true);
+        //     }
+        // }
+
+
         /// <summary>
-        /// DANGER: Erases all Utility files including backups etc
+        /// DANGER: Erase backup file if it exists by name
         /// </summary>
-        internal static void EraseEntireContentsOfBackupFilesFolder()
+        internal static void EraseBackupFile(string name)
         {
-            System.IO.DirectoryInfo di = new DirectoryInfo(BackupFilesFolder);
-            foreach (FileInfo file in di.EnumerateFiles())
+            
+            name=Path.GetFileName(name);//ensure no directory shenanigans, only a file name is allowed
+            //remove the file completely           
+            var DeleteFilePath = Path.Combine(BackupFilesFolder, name);
+            if (File.Exists(DeleteFilePath))
             {
-                file.Delete();
-            }
-            foreach (DirectoryInfo dir in di.EnumerateDirectories())
-            {
-                dir.Delete(true);
+                //delete the temp file, it's already stored
+                File.Delete(DeleteFilePath);
             }
+            //never return an error as that would leak info if someone is fishing for deleting files that don't exist
         }