用ASP做的DNS LOOKUP程序

2019-10-21 10:37asp技术网 ASP教程

用ASP做的DNS LOOKUP程序，服务器上需要安装WSH2.0或者更高版本。

运行环境，NT(SERVER、WORKSTATION)、W2K

服务器上需要安装WSH2.0或者更高版本

如果您的系统目前没有安装WSH2.0，您可以从以下这个地址去下载它

http://www.microsoft.com/msdownload/vbscript/scripting.asp

里面包含了WSH2.0

下面是源代码

<%@ Language="VBScript" %>

<% Option Explicit %>

<%

If Request.Form("frmHost") = "" Then

    '设置初始值

    strIP = Request.ServerVariables("REMOTE_ADDR")

Else

    strIP = Request.Form("frmHost")

End If

%>

<html>

<head>

    <title>DNS Lookup [v 1.0]</title>

</head>

<body bgcolor="#FFFFFF">

<form Method="POST" Name="frmRDNS">

    <label for="frmHost"><u>Host:</u></label>

    <input type="text" name="frmHost" ID="frmHost"

        value="<%= strIP  %>">

    <input type="button" name="btnSubmit" ID="btnSubmit"

        value="Lookup" onClick="document.frmRDNS.submit()">

</form>

<font face="arial" size="2" color="#003366">

<%

rMethod = uCase(Request.ServerVariables("REQUEST_METHOD"))

If rMethod = "POST" Then

    ' Lookup Host

    strReturn = nsLookup(strIP)

    If strReturn <> "" Then

        Response.Write strReturn

    Else

        ' A Lame Host is any Valid Host that DNS Cannot Resolve

        ' See InterNic for Details

        Response.Write "<b>Lame Host - Could Not Resolve DNS For " _

            & strIP & "</b><br>"

    End If

End If

Function NSlookup(strHost)

    'Create Shell Object

    Set oShell = Server.CreateObject("Wscript.Shell")

    'Run NSLookup via Command Prompt

    'Dump Results into a temp text file

    oShell.Run "%ComSpec% /c nslookup " & strHost _

        & "> C:\" & strHost & ".txt", 0, True

    'Open the temp Text File and Read out the Data

    Set oFS = Server.CreateObject("Scripting.FileSystemObject")

    Set oTF = oFS.OpenTextFile("C:\" & strHost & ".txt")

    tempData = Null

    Data = Null

    i = 0

    Do While Not oTF.AtEndOfStream

        Data = Trim(oTF.Readline)

            If i > 2 Then ' Don't want to display local DNS Info.

                tempData = tempData & Data & "<BR>"

            End If

        i = (i + 1)

    Loop

    'Close it

    oTF.Close

    'Delete It

    oFS.DeleteFile "C:\" & strHost & ".txt"

    Set oFS = Nothing

    nsLookup = tempData

End Function

%>

</font>

</body>

</html>