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Classic ASP:  Prevent new Member Verify Twice after clicking verification email

Posted on 2008-10-16
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Last Modified: 2012-05-05
Hi I am building a member  based websit written on ASP- Vb Script and database driven SQL server 2000 . I  would have people signing in through a form.asp and then they will get an email to their entered adress so their account becomes active once they click on the  link and get to a thanks.asp page thath displays they have confirmed their email and their account is now verified.  My problem is that I don't know how to prevent someone who already set their verify status to true to get the same page thanks but I want to check somehow if they have clicked that liniked before and their account is already verified so they get the proper error page.  Also I want to make this page more secure and pass a challenge cod e along the verify link. Thanks in advance.
<%@ Language = "VBScript" %>

<% level="../"%>

<% Option Explicit
 
 
 

<!--#include file="../include/intialize.inc"-->

<!--#include file="../../Connections/sqlConn1.asp" -->

set RecsetRef = conSQL.execute("Select 1 From Players where verify= 1 and referenceno="&RefNumber&"")

If recordcount > 0 Then

  responce.redirect("SubmisionError.asp")

End If

%>
 
 

<html>

<head>

<title><%=PageTitle%></title>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<link href="../style/style.css" rel="stylesheet" type="text/css">

</head>

<%
 

Dim RefNumer 

	RefNumber =  cint(Request.QueryString("refno"))
 

'psw="playerscores"	

	'strTemp = EnDeCrypt(RefNumber, psw)

	

	

	conSQL.execute("update Players set verify= 1 where referenceno="&RefNumber&"")

	conSQL.execute("update players set status=1 where referenceno="&RefNumber&"")

	

	' remove comment to add registered users to forum too 

	'con7.execute("update tblauthor set Active = 1 where username='"&request("SSN")&"'")

	  	    

	If Err.Number <> 0 Then

				Response.Write "Error: " & Err.Description

	end if

	End if 

	

%>

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Comment
Question by:RickyGtz
  • 2
3 Comments
 
LVL 9

Expert Comment

by:deathtospam
ID: 22732141
I obviously can't test this code out from my end, but try using something like this:
<%@ Language = "VBScript" %>

<% level="../"%>

<% Option Explicit %>

 

<!--#include file="../include/intialize.inc"-->

<!--#include file="../../Connections/sqlConn1.asp" -->
 

<%	Dim iReferenceNo, rsVerifyInfo, bIsVerified
 

	iReferenceNo = cLng(Request.QueryString("refno"))

	bIsVerified = false

	

	'// Look up the reference number to see if the player has already been verified.

	Set rsVerifyInfo = conSQL.execute("SELECT verify FROM Players WHERE referenceno = " & RefNumber)	
 

	If rsVerifyInfo.EOF Then

		'// ERROR: A player corresponding to the reference number could not be found.

		Call Response.Redirect("SubmisionError.asp")

		Call Response.End()

	Else

		'// A player corresponding to the reference number was found.  See if they've been verified yet.

		bIsVerified = (cLng(rsVerifyInfo("verify")) = "1") %>

<html>

	<head>

		<title><%=PageTitle%></title>

		<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

		<link href="../style/style.css" rel="stylesheet" type="text/css">

	</head>

	<body>

<%		If bIsVerfied Then

			'// The player has already been verified once before. %>

			Your account has already been verified.

<%		Else

			'// The player has not yet been verified.  Verify them now and display a welcome message.

			Call conSQL.execute("UPDATE Players SET verify=1, status=1 WHERE referenceno = " & RefNumber) %>

			Your account is now verified.  Welcome!

<%		End If %>

	</body>

</html>

<%	End If
 

	Set rsVerifyInfo = Nothing %>

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Author Comment

by:RickyGtz
ID: 22732251
Hi I just test that out . It seems logical but now I am having an error on

Microsoft OLE DB Provider for ODBC Drivers error '80040e14'

[Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax near '='.

/members/verify.asp, line 12

      '// Look up the reference number to see if the player has already been verified.
      Set rsVerifyInfo = conSQL.execute("SELECT verify FROM Players WHERE referenceno = " &RefNumber)      

0
 
LVL 9

Accepted Solution

by:
deathtospam earned 500 total points
ID: 22736291
Woops... sorry.  I didn't consistently replace all of your old variable names.  Try the code below, or replace all instances of "RefNumber" with "iReferenceNo".
<%@ Language = "VBScript" %>

<% level="../"%>

<% Option Explicit %>

 

<!--#include file="../include/intialize.inc"-->

<!--#include file="../../Connections/sqlConn1.asp" -->

 

<%      Dim iReferenceNo, rsVerifyInfo, bIsVerified

 

        iReferenceNo = cLng(Request.QueryString("refno"))

        bIsVerified = false

        

        '// Look up the reference number to see if the player has already been verified.

        Set rsVerifyInfo = conSQL.execute("SELECT verify FROM Players WHERE referenceno = " & iReferenceNo)        

 

        If rsVerifyInfo.EOF Then

                '// ERROR: A player corresponding to the reference number could not be found.

                Call Response.Redirect("SubmisionError.asp")

                Call Response.End()

        Else

                '// A player corresponding to the reference number was found.  See if they've been verified yet.

                bIsVerified = (cLng(rsVerifyInfo("verify")) = "1") %>

<html>

        <head>

                <title><%=PageTitle%></title>

                <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

                <link href="../style/style.css" rel="stylesheet" type="text/css">

        </head>

        <body>

<%              If bIsVerfied Then

                        '// The player has already been verified once before. %>

                        Your account has already been verified.

<%              Else

                        '// The player has not yet been verified.  Verify them now and display a welcome message.

                        Call conSQL.execute("UPDATE Players SET verify=1, status=1 WHERE referenceno = " & iReferenceNo) %>

                        Your account is now verified.  Welcome!

<%              End If %>

        </body>

</html>

<%      End If

 

        Set rsVerifyInfo = Nothing %>

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