<%
Dim blnValidEntry ' Log variable
' First set that this log is valid
blnValidEntry = True
' If Session Variable "LogIn" is not empty
' that mean this person has already been logged
' then set blnValidEntry to False
If not IsEmpty(Session("LogIn")) then blnValidEntry = False
' Here you can add different restriction
' If the refering url is from same site
' then there is no need to write to log file
If Left(Request.ServerVariables("HTTP_REFERER"), 17)="http://devasp.com" Then
blnValidEntry = False
End If
If Left(Request.ServerVariables("HTTP_REFERER"), 21)="http://www.devasp.com" Then
blnValidEntry = False
End If
' Now if blnValidEntry is True then enter to log file
If blnValidEntry Then
Const ForAppending = 8
Const Create = true
Dim FSO
Dim TS
Dim MyFileName
Dim strLog
MyFileName = Server.MapPath("MyLogFile.txt")
Set FSO = Server.CreateObject("Scripting.FileSystemObject")
Set TS = FSO.OpenTextFile(MyFileName, ForAppending, Create)
' Store all the required information in a string Called strLog
strLog = "
" & NOW() & " "
strLog = strLog & Request.ServerVariables("REMOTE_ADDR") & " "
strLog = strLog & Request.ServerVariables("HTTP_REFERER") & " "
strLog = strLog & Request.ServerVariables("HTTP_USER_AGENT") & "
"
' Write current information to Log Text File.
TS.write strLog
TS.Writeline ""
' Now Create a session varialbe to check next time for ValidEntry
Session("LogIn") = "yes"
Set TS = Nothing
Set FSO = Nothing
End If
%>