Web应用程序中的NTLM身份验证（java）

Z时代
2024-01-10
分类：问答

我正在使用以下过滤器在我的Web应用程序中启用NTLM身份验证。

我得到Windows浏览器身份验证提示。运行正常。除了以下事实外- * 两种情况均无错误。

*在每种情况下都将打印用户名（正确或相反），工作站等。

package com.test;
import java.io.IOException;
import java.io.PrintStream;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import jcifs.ntlmssp.Type3Message;
import com.sun.xml.internal.ws.util.StringUtils;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class NTLMUserFilter implements Filter {
    private FilterConfig filterConfig = null;
    private String userDomain = null;
    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
    }
    public void doFilter(ServletRequest req, ServletResponse res,
            FilterChain chain) {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;
        String username = null;
        //first, get the user agent
        String useragent = request.getHeader("user-agent");
        //if you're using IE, you can continue
        if ((useragent.indexOf("MSIE") > -1)){
            //Always do the ntlm check (for IE POST back)
            try{
                String auth = request.getHeader("Authorization");
                if (auth == null)
                {
                  response.setHeader("WWW-Authenticate", "NTLM");
                  response.setStatus(response.SC_UNAUTHORIZED);
                  response.setContentLength(0) ;
                  response.flushBuffer();
                  return;
                }
                if (auth.startsWith("NTLM "))
                {
                  byte[] msg = new sun.misc.BASE64Decoder().decodeBuffer(auth.substring(5));
                  int off = 0, length, offset;
                  if (msg[8] == 1)
                  {
                    byte z = 0;
                    byte[] msg1 = {(byte)'N', (byte)'T', (byte)'L', (byte)'M', (byte)'S', (byte)'S', (byte)'P', z,(byte)2, z, z, z, z, z, z, z,(byte)40, z, z, z, (byte)1, (byte)130, z, z,z, (byte)2, (byte)2, (byte)2, z, z, z, z, z, z, z, z, z, z, z, z};
                    response.setHeader("WWW-Authenticate", "NTLM " + new sun.misc.BASE64Encoder().encodeBuffer(msg1));
                    response.setStatus(response.SC_UNAUTHORIZED);
                    response.setContentLength(0) ;
                    response.flushBuffer();
                    return;
                  }
                  else if (msg[8] == 3)
                  {
                      //Did Authentication Succeed? All this is always printed.
                      Type3Message type3 = new Type3Message(msg);
                      System.out.println("osUser: " + type3.getUser());
                      System.out.println("osRemoteHost: + " + type3.getWorkstation());
                      System.out.println("osDomain: " + type3.getDomain());
                  }
                }
            }catch(Exception e){
                System.out.println(e) ;
            }
            //System.out.println("Suc);
            }
        try {
            chain.doFilter(req, res);
        } catch (IOException e) {
            System.out.println(e);
        } catch (ServletException e) {
            System.out.println(e);
        }
    }
public void destroy()
   {
     this.filterConfig = null;
   }
}

web.xml很简单：

<filter>
    <filter-name>ntlmFilter</filter-name>
    <filter-class>
        com.test.NTLMUserFilter
    </filter-class>
</filter>
<!-- Filter mapping configuration   -->
<filter-mapping>
    <filter-name>ntlmFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>