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ASP page to authenticate username and password with active directory

Hello,

I'm trying to create an ASP page where users can type in a username
and password, and these credential should be checked with active
directory. If username and password are correct, the script will
continue to run otherwise it will stop. Below you will find my code
I've programmed until now, at this moment I've got one big problem:
my script stops at the line:
Set oRootDSE = GetObject("LDAP ://RootDSE")
Why is this GetObject thing giving so much problems and is there a
way to let it work? Maybe there are already scripts available to do
the same thing, anyway, all help is welcome. Here comes the code:

<html>

<head>
<meta http-equiv="Content-Language" content="nl-be">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<meta name="GENERATOR " content="Micros oft FrontPage 4.0">
<meta name="ProgId" content="FrontP age.Editor.Docu ment">
<title>username </title>
</head>

<body>
<SCRIPT LANGUAGE=VBScri pt>

<!--

Option Explicit

Dim bValid
Dim oRootDSE
Dim oDSObj
Dim oAuth
Dim szNamingContext
Const ADS_SECURE_AUTH ENTICATION=1
Dim szUserId, szPasswd
Sub B1_OnClick

bValid = True

Call CheckField(docu ment.form1.user name.Value, "Please enter a
value in the field.")
Call CheckField(docu ment.form1.pass word.Value, "Please enter a
value in the field.")
If bValid Then

szUserId = document.form1. username.value
szPasswd = document.form1. password.value
' Retrieve the current domain
Set oRootDSE = GetObject("LDAP ://RootDSE")

szNamingContext = oRootDSE.Get("d efaultNamingCon text")
' Validate against the namespace
Set oDSObj = GetObject("LDAP :")
Set oAuth = oDSObj.OpenDSOb ject("LDAP://" & szNamingContext , _
szUserId, szPasswd, ADS_SECURE_AUTH ENTICATION)

' User authenticated if we get here
bAuthenticateUs er = True
End If

End Sub

Sub CheckField(ByVa l strFieldValue, ByVal strMessage)

If strFieldValue = "" Then

MsgBox strMessage, 0

bValid = False

End If

End Sub

-->

</Script>

<FORM NAME="form1">
<p>&nbsp;</p>
<p align="center"> username: <input type="text" name="username"
size="20"></p>
<p align="center"> password: <input type="password" name="password"
size="20"></p>
<p>&nbsp;</p>
<p align="center"> &nbsp;&nbsp;
&nbsp;&nbsp;&nb sp;&nbsp;&nbsp; &nbsp;&nbsp;&nb sp; <input
type="submit" value="Submit"
name="B1">&nbsp ;&nbsp;&nbsp;&n bsp;&nbsp;&nbsp ;&nbsp;&nbsp;&n bsp;&nbsp;&nbsp ;

<input type="reset" value="Reset" name="B2"></p>
</form>

</body>

</html>

Jul 19 '05 #1
5 12099
"Joeri KUMBRUCK" <Jo************ @dhl.com> wrote in message
news:41******** *******@dhl.com ...
Hello,

I'm trying to create an ASP page where users can type in a username
and password, and these credential should be checked with active
directory.


Here's the one I use:

authad.asp
<html>
<head>
</head>
<body>
<form action=authad.a sp method=post>
Username: <input type=text name=strUserNam e><br>
Password: <input type=password name=strPasswor d><br>
<input type=submit name=btnSubmit>
</form>
<%
If Request.Form("s trUsername") <> "" Then
Dim strADsPath
strADsPath = "WinNT://yourdomain"

strUserName = "yourdomain \" & Request.Form("s trUserName")
strPassword = Request.Form("s trPassword")

if (not strADsPath= "") then 'if and ADS Object path has been provided
proceed with authentication

' bind to the ADSI object and authenticate Username and password
Dim oADsObject
Set oADsObject = GetObject(strAD sPath)
response.write "Authenticating ...<br><br>"
Dim strADsNamespace
Dim oADsNamespace
strADsNamespace = left(strADsPath , instr(strADsPat h, ":"))
set oADsNamespace = GetObject(strAD sNamespace)
Set oADsObject = oADsNamespace.O penDSObject(str ADsPath, strUserName,
strPassword, 0)
' we're only bound if err.number = 0
if not (Err.number = 0) then
Response.Write "<font color='red'><fo nt size = 5><u><b>Authent ication has
failed...<b></u></font></font>"
'Response.Write "Failed to bind to object <b>" & strADsPath & "</b><br>"
'response.write err.description & "<p>"
'Response.write "Error number is " & err.number & "<br>"
Session("Auth") = "NO"
else
Response.Write "<font color='blue'>US ER AUTHENTICATED!</font><br>"
'Response.Write "Currently viewing object at <b>" & oADsObject.ADsP ath &
"</b><br>"
'Response.Write "Class is " & oADsObject.Clas s & "<br>"
Session("Auth") = "YES"
end if
'response.write "<p>"
end if
End If
%>
</body>
</html>

--
Tom Kaminski IIS MVP
http://www.microsoft.com/windowsserv...y/centers/iis/
http://mvp.support.microsoft.com/
http://www.iisfaq.com/
http://www.iistoolshed.com/ - tools, scripts, and utilities for running IIS
http://www.tryiis.com
Jul 19 '05 #2
Hello Tom,

thanks for your help! I've copy/pasted your code, but it doesn't work. I
can't see anything wrong in it, except some variables which are not
defined. Do I need to do anything special to let it work? I can fill in
the fields and press submit, but there is no result showing...

thanks for your help,

Joeri

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!
Jul 19 '05 #3
"Joeri Kumbruck" <jo************ @dhl.com> wrote in message
news:%2******** **********@tk2m sftngp13.phx.gb l...
Hello Tom,

thanks for your help! I've copy/pasted your code, but it doesn't work. I
can't see anything wrong in it, except some variables which are not
defined. Do I need to do anything special to let it work? I can fill in
the fields and press submit, but there is no result showing...


Nothing at all shows? Does any ASP work?

--
Tom Kaminski IIS MVP
http://www.microsoft.com/windowsserv...y/centers/iis/
http://mvp.support.microsoft.com/
http://www.iisfaq.com/
http://www.iistoolshed.com/ - tools, scripts, and utilities for running IIS
http://www.tryiis.com
Jul 19 '05 #4
Tom,

works like a charme, thank you for the script! I did something wrong when I
wanted to launch the file, but all is working now,

thanks again,

brgds,

Joeri

"Tom Kaminski [MVP]" wrote:
"Joeri Kumbruck" <jo************ @dhl.com> wrote in message
news:%2******** **********@tk2m sftngp13.phx.gb l...
Hello Tom,

thanks for your help! I've copy/pasted your code, but it doesn't work. I
can't see anything wrong in it, except some variables which are not
defined. Do I need to do anything special to let it work? I can fill in
the fields and press submit, but there is no result showing...


Nothing at all shows? Does any ASP work?

--
Tom Kaminski IIS MVP
http://www.microsoft.com/windowsserv...y/centers/iis/
http://mvp.support.microsoft.com/
http://www.iisfaq.com/
http://www.iistoolshed.com/ - tools, scripts, and utilities for running IIS
http://www.tryiis.com


Jul 19 '05 #5
jjsaper0729
4 New Member
Got your script Tom and put it into my login to test. I alwasy get an error like so:

error '8007052e'

/tempscripts/ldaptest2.asp, line 30

line 30 is:

Set oADsObject = oADsNamespace.O penDSObject(str ADsPath, strUserName, strPassword, 0)

I set strADsPath to "WinNT://MYDOMAIN" as well as "LDAP://MYDOMAIN"

Thanks
May 16 '06 #6

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