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JS获取IP及MAC

2008-06-15 11:59:33| 分类： javascript | 标签： |举报 |字号大中小订阅

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在做B/S结构的系统时，我们常常需要获取客户端的一些信息，如IP和MAC，以结合身份验证。在ASP.NET中,要获取服务器端的MAC很容易，但是要获取客户端的MAC的地址确要花费一翻心思，通常的做法是调用Win32API或直接调用nbtstat命令，这样做有很多问题，而另一种方法就是直接用客户端脚本，我们这里用Javascript，这样做的好处是不需要服务器端进行处理，有客户端自行获取，传递到服务器端，且速度和可靠性都比在服务器端获取好。
具体实现的html和javascript如下：
<HTML><HEAD><TITLE>WMI Scripting HTML</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JScript event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for=foo>
document.forms[0].txtMACAddr.value=unescape(MACAddr);
document.forms[0].txtIPAddr.value=unescape(IPAddr);
document.forms[0].txtDNSName.value=unescape(sDNSName);
//document.formbar.submit();
</SCRIPT>

<SCRIPT language=JScript event=OnObjectReady(objObject,objAsyncContext) for=foo>
   if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true)
   {
    if(objObject.MACAddress != null && objObject.MACAddress != "undefined")
    MACAddr = objObject.MACAddress;
    if(objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined")
    IPAddr = objObject.IPAddress(0);
    if(objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
    sDNSName = objObject.DNSHostName;
    }
</SCRIPT>

<META content="MSHTML 6.00.2800.1106" name=GENERATOR></HEAD>
<BODY>
<OBJECT id=locator classid=CLSID:76A64158-CB41-11D1-8B02-00600806D9B6 VIEWASTEXT></OBJECT>
<OBJECT id=foo classid=CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223></OBJECT>
<SCRIPT language=JScript>
   var service = locator.ConnectServer();
   var MACAddr ;
   var IPAddr ;
   var DomainAddr;
   var sDNSName;
   service.Security_.ImpersonationLevel=3;
   service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
   </SCRIPT>

<FORM id=formfoo name=formbar action=NICPost.asp method=post><INPUT value=00:05:5D:0E:C7:FA name=txtMACAddr> <INPUT value=192.168.0.2 name=txtIPAddr> <INPUT value=typ name=txtDNSName> </FORM></BODY></HTML>
        关键是用到两个ActiveX：
        <OBJECT id=locator classid=CLSID:76A64158-CB41-11D1-8B02-00600806D9B6 VIEWASTEXT></OBJECT>
        <OBJECT id=foo classid=CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223></OBJECT>
        不过这两个ActiveX都是系统自带，不用去下载或注册。
        接下来的工作就是用脚本和ActiveX交互，脚本可以是js或Vbs我个人喜欢用js。

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