程序里用了setAttribute(Stirng name, Object o)方法,如何对这个方法做xss处理,下面是我的代码,请问各位如何对这个方法做xss处理
import java.util.regex.Pattern;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
public class XSSRequestWrapper extends HttpServletRequestWrapper {
public XSSRequestWrapper(HttpServletRequest servletRequest) {
super(servletRequest);
}
@Override
public void setAttribute(String name , Object o) {
super.setAttribute(name, o);
}
private String stripXSS(String value) {
if (value != null) {
value = value.replaceAll("", "");
Pattern scriptPattern = Pattern.compile("", Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("src[\r\n]*=[\r\n]*\\\'(.*?)\\\'", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("src[\r\n]*=[\r\n]*\\\"(.*?)\\\"", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("", Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile(", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("eval\\((.*?)\\)", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("expression\\((.*?)\\)", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("javascript:", Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("vbscript:", Pattern.CASE_INSENSITIVE);
value = scriptPattern.matcher(value).replaceAll("");
scriptPattern = Pattern.compile("onload(.*?)=", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
value = scriptPattern.matcher(value).replaceAll("");
}
return value;
}
}
参考GPT和自己的思路:你的代码是实现一个自定义的HttpServletRequestWrapper,用于在setAttrubute()方法中对传入的参数进行XSS处理。具体来说,stripXSS()方法使用了一系列正则表达式,去掉了一些可能会造成XSS漏洞的字符或脚本。然后,在setAttribute()方法内部,调用super.setAttribute()方法之前,先调用stripXSS()方法对传入的Object o参数进行处理,确保不会存在XSS漏洞。同时需要注意的是,这个方法仅仅是对setAttribute()方法做了XSS防御,并不适用于所有的用户输入场景。在实际开发中,还需要结合其他技术手段进行XSS漏洞防御。