PerplexityCodeReviewer

class PathTraversalSanitizer 
{ 
  @MethodHook(type = HookType.AFTER, targetClassName = "java.io.File", targetMethod = "<init>", targetMethodDescriptor = "(Ljava/lang/String;)")

   public static void fileConstructorHook(MethodHandle method, Object thisObject, Object[] arguments, int hookId, Object returnValue) 
{ 
  File file = (File) thisObject; 
  String pathname = (String) arguments[0];

  try 
{ // Check whether the canonical path of `file` lies inside a known list of allowed paths. 
  if (!file.getCanonicalPath().startsWith("/expected/path")) 
{ // If not, throw a distinctive exception that is reported by Jazzer. throw new PotentialPathTraversalException(); } } 
  catch(IOException e) { } }