JspServlet

config.getInitParameter("engineOptionsClass")?(System.getSecurityManager() == null);
"org.apache.jasper.EmbeddedServletOptions.EmbeddedServletOptions";

config.getInitParameter("jspFile");
request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH) + (request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO) || "");
request.getServletPath() + (request.getPathInfo() || "");

true?(
    request.getQueryString() like (
        [null, "&"] + "jsp_precompile" + [null, ["=true", "=false"] + [null, "&"]]
    )
);
false;