wifidog认证

2014-08-13 13:55:21  阅读 4380 次 评论 0 条
wifidog认证
2013-12-08 16:04:58
原创作品,允许转载,转载时请务必以超链接形式标明文章 原始出处 、作者信息和本声明。否则将追究法律责任。http://wxhhbdx.blog.51cto.com/2986356/1338059

前段时间使用wifidog进行wifi强制认证,现在做个小结。

1.首先简单说说wifidog认证的过程

客户端首次连接到wifi后,浏览器请求将会被重定向到:

login/?gw_address=%s&gw_port=%d&gw_id=%s&url=%s

验证通过后,客户端被重定向到网关,url格式如下:

http://网关地址:网关端口/wifidog/auth?token=

wifidong会启动一个线程周期性地报告每一个用户的状态信息,并通过如下地址发送给认证

服务器:

auth_server:/auth/?stage=

ip=

mac=

token=

incoming=

outgoing=

认证服务器根据该状态信息决定是否允许该用户继续连接,并回复网关,回复格式为:Auth:状态码,

如:Auth:1

常用状态码:

0:AUTH_DENIED,表示拒绝

1:AUTH_ALLOWED,验证通过

验证通过后,将重定向到如下地址:

portal/?gw_id=%s

wifidog的ping协议

wifidog通过ping协议将当前状态信息发送给认证服务器,发送地址为:

http://auth_sever/ping/?

gw_id=%s

sys_uptime=%lu

sys_memfree=%u

sys_load=%.2f

wifidog_uptime=%lu

认证服务器须返回一个“Pong”作为回应。

2.实战应用

struts配置文件:

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<package name="index" namespace="/" extends="interceptorMy,struts-default">
<action name="login/" class="goodsAction" method="login">
<result name="success" type="redirect">/Login/index.jsp</result>
<result name="input">/error.jsp</result>
</action>
<action name="ping/" class="goodsAction" method="ping">
</action>
 <action name="auth/" class="goodsAction" method="auth">
</action>
<action name="portal/" class="goodsAction" method="portal">
</action>
</package>

Action方法

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public String login() {
    try{
        System.out.println("login start!");
                System.out.println("gw_port:"+gw_port);
        System.out.println("login end!");
                                                                                                                                                                                                                                                                                                                      
     }
    catch(Exception e)
    {
        e.printStackTrace();
        return INPUT;
    }
    return "success";
}
public void ping() {
    try{
        System.out.println("ping start!");
        System.out.println(gw_id);
        ServletActionContext.getResponse().getWriter().write("Pong");
        System.out.println("ping end!");
         }
    catch(Exception e)
    {
        e.printStackTrace();
    }
}
public void portal() {
    try{
        System.out.println("portal start");
        System.out.println("protal"+token);
    ServletActionContext.getResponse().sendRedirect("/demo/listAction");
        System.out.println("portal end");
     }
    catch(Exception e)
    {
        e.printStackTrace();
    }
}
public void auth() {
    try{
        System.out.println("auth start!");
        System.out.println("mac"+mac);
        System.out.println("stage"+stage);
        System.out.println("token"+token);
        ServletActionContext.getResponse().getWriter().write("Auth: 1");
        System.out.println("auth end!");
                                                                                                                                                                                                                                                                                                                      
     }
    catch(Exception e)
    {
        e.printStackTrace();
    }
}

/Login/index.jsp代码:

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<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
    DateFormat format=new SimpleDateFormat("yyMMddHHmmss");
    String formatData=format.format(new Date());
    int ramdom=new Random().nextInt(1000);
    String token=formatData+ramdom;
    if(session.getAttribute("token")==null)
       session.setAttribute("token",token);
                                                                                                                                                                                                                                              
%>
<form method="GET" action='http://192.168.1.1:2060/wifidog/auth'>
<input type='hidden' name='token' value="<s:property value="#session.token" />" />
<input type='submit' value='Welcome!'/>
</form>

上面的192.168.1.1为网关的ip,2060为网关端口。

当然,完全可以在处理完login后直接跳到该地址。我们这里为演示其认证流程,故跳到该页面

效果:

客户端连接到wifi后,打开任何连接均跳到上面的index.jsp中,点击"Welcome"后,跳到/demo/listAction,即我们的目标地址。此后点击其他连接将不再拦截。

提示:安装wifidog的路由器必须可以访问Internet,否则wifidog拦截失败,无法跳到我们设定的页面。

本文出自 “青云流水” 博客,请务必保留此出处http://wxhhbdx.blog.51cto.com/2986356/1338059

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