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Example of ASP LDAP query string? 14

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MikeBronner

Programmer
May 9, 2001
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Could someone post an example of ASP code used to query LDAP without any proprietary components?

Thanks! Take Care,
Mike
 
Would this pull the Organizational Units?

SQLStmt = "Select cn " & _
"From 'LDAP://LDAPSERVER:10003/o=microsoft/ou=members' " & _
"Where objectClass='*'
 
To get AD Path or user:

Code:
strSQL="select AdsPath FROM 'GC://"+domainName+"' where sAMAccountname='"+strUsername+"'"
 
Does anyone know how to authenticate a user in asp with LDAP, I can connect to the LDAP server and display the users and details but can't figure out how to check if the user is logged in.
 
1888888,
I'm not clear what you want to do. But here is a simple asp form that does authentication:
Code:
<%@ Language=VBScript %>
<%
on error resume next
fsCompletted = Request.QueryString("f")

If fsCompletted = 1 Then
  ResultHTML = ProcessForm
  else
   ResultHTML = "<br>"
End If 

Function ProcessForm
 on error resume next
 const ADS_SECURE_AUTHENTICATION=&h0001
 oUsername=Request.Form("username")
 oPassword=Request.Form("password")
 DN="LDAP://SERVERNAME/cn=users,dc=microsoft,dc=com"
 Set MyNamespace = GetObject("LDAP:")
 Set X = MyNamespace.OpenDSObject(DN, oUserName, oPassword, ADS_SECURE_AUTHENTICATION)
 if err.number=0 then
  HTML = "<p>Authenticated</p>"
  else
  HTML = "<p>Not Authenticated</p>"
 end if
 Set MyNamespace = Nothing
 Set X = Nothing
 ProcessForm=HTML
End Function

PostURL = Request.ServerVariables("SCRIPT_NAME") & "?f=1"

%>  
<HTML>
<HEAD>
</HEAD>
<BODY>
<%=ResultHTML%>
<%
if request.querystring("f")="" then
%>

<form method="post" Action="<%=PostURL%>">
<p>Username : <input type="text" Name="username" Size=10></p>
<p>Password : <input type="password" Name="password" Size=10></p>
<input Name=SubmitButton Value="Authenticate User" Type=submit>
</form>

<%end if%>

</BODY>
</HTML>

You will need to modify the DN string to match your domain.

zcolton
 
Thanks for that zcolton this all works great on my machine but when I gave the link to others it doesn't work. Any ideas as to why. Its says it can't authenticate the user, however it works fine for me because iis is on my computer. Thanks for your help!
 
1888888

The user name must be entered as DOMAIN\username
Try it and let me know

Z
 
Hi can someone help with writing data to LDAP using ASP.
 
hi zcolton,

The authorisation of the user works for any computer but I still seem to have problems getting the ldap info like name, email from other computers works fine from my because I am hosting IIS, do you have any ideas. It says it can't find table, I have the anomyous access switched off.

Thanks
18888888
 
1814,

You can't write data through LDAP. LDAP connections are read only. You will need to use an alternate method. What do you want to be able write?

1888888,

Please give me a full description of what you want to do and I can tell you what you need to change.

zcolton
 
1888888,

I think I have what you're looking for. No customizations required. It's generic, but it does require that the IIS server is at least a domain member. The usernmae field will accept DOMAIN\username or username@domain.com. If the username and password authenticates, so user info is displayed.

Code:
<%@ Language=VBScript %>
<%
fsCompletted = Request.QueryString("f")

If fsCompletted = 1 Then
  ResultHTML = ProcessForm
  else
   ResultHTML = "<br>"
End If 

Function ProcessForm
 on error resume next
 oUsername=Request.Form("username")
 oPassword=Request.Form("password")
 strUserName = Right(oUsername, Len(oUsername) - InStrRev(oUsername, "\"))
 if InStr(strUserName, "@")>0 then
  strUserName = Left(strUserName, InStr(strUserName, "@")-1)
 end if
 Set objDomain = GetObject("GC://rootDSE")
 objADsPath = objDomain.Get("defaultNamingContext")
 Set objDomain = Nothing
 Set con = Server.CreateObject("ADODB.Connection")
 con.provider ="ADsDSOObject"
 con.Properties("User ID") = oUsername
 con.Properties("Password") = oPassword
 con.Properties("Encrypt Password") = False
 con.open "Active Directory Provider"
 Set Com = CreateObject("ADODB.Command")
 Set Com.ActiveConnection = con
 Com.CommandText ="select name,telephonenumber,mail FROM 'GC://"+objADsPath+"' where sAMAccountname='"+strUsername+"'"
 Set rs = Com.Execute
 if err.number=0 then
  HTML = "<p>"+rs("name")+"<br>"+rs("telephonenumber")+"<br>"+rs("mail")+"</p>"
  else
   HTML = "<p>Not Authenticated</p>"
 end if
 rs.Close
 con.Close
 Set rs = Nothing
 Set con = Nothing
 ProcessForm=HTML
End Function

PostURL = Request.ServerVariables("SCRIPT_NAME") & "?f=1"

%>  
<HTML>
<HEAD>
</HEAD>
<BODY>
<%=ResultHTML%>
<%
if request.querystring("f")="" then
%>

<form method="post" Action="<%=PostURL%>">
<p>Username : <input type="text" Name="username" Size=10></p>
<p>Password : <input type="password" Name="password" Size=10></p>
<input Name=SubmitButton Value="Authenticate User" Type=submit>
</form>

<%end if%>

</BODY>
</HTML>

zcolton
 
zcolton

that works really well thanks again for you help!

18888888
 
Hi Can someone help me with converting belwo JAVA code to ASP and Write to LDAP. I really appreciate your help on this.

URL url = new URL(" + ldapProps.getProperty("host") + ":" + ldapProps.getProperty("port") + "/CON?app
=ApplicationName&uid=" + ldapProps.getProperty("sess_user") + "&pwd=" + ldapProps.getProperty("sess_pwd") + "&rtype=nvpairs");
StringBuffer sb = new StringBuffer();
InputStreamReader isr = new InputStreamReader(url.openStream());
char[] data = new char[4096];
int n = 0;
while((n=isr.read(data, 0, 4096)) != -1)
sb.append(data, 0, n);
isr.close();
String xmlInput = "<?xml version=\"1.0\"?>\n" + sb.toString();
DOMParser parser = (DOMParser)Class.forName("org.apache.xerces.parsers.DOMParser").newInstance();
parser.parse(new InputSource(new StringReader(xmlInput)));
Document doc = parser.getDocument();
if(doc.hasChildNodes()){
Node top = doc.getFirstChild();
String name = top.getNodeName();
if(name.equals("CON")){
boolean found = false;
if(top.hasChildNodes()){
for(Node ch = top.getFirstChild();ch != null; ch = ch.getNextSibling()){
if(ch.getNodeName().equals("sess")){
sessionId = ch.getFirstChild().getNodeValue();
found = true;
}
if(ch.getNodeName().equals("reason")){
if(ch.getFirstChild().getNodeValue().equals("user already in session")
){
found = true;
expireSession();
}
}
}
}
if(!found)
throw new Exception("Session ID could not be obtained:\n" + xmlInput);
}
}
}


Adding User to the group in LDAP


{
String usr = "/AUG?app=%sess%&grp=" + gname + "&uid=" + userid + "&pwd=”+password+”&rtype=nvpairs";

Object[] st = WeisXMLParser.TagIdValues(usr, "status");
for(int i=0; i<st.length; i++){
System.out.println((new java.util.Date()).toString() + " " + (String)st);
}

if(((String)st[0]).equals("OK")){
System.out.println((new java.util.Date()).toString() + " successful to get the result ");
return true;
}else{
Object[] reason = WeisXMLParser.TagIdValues(usr, "reason");
description = (String) reason[0];
return false;
}
}catch(Exception e){
e.printStackTrace();
return false;
}
 
Avanika,

Wrong forum. Also, LDAP is read-only. You can not write to anything using LDAP.

zcolton
 

zcolton, love your work, thanks for a great little tool.

just wonding if you could help me custamise the list.asp page to display all users in the "Department" ( i am guessing that is the only one you need to change).

I still want the letters across the top to allow staff to Drill down. but it would be good to see the full list shen it is selected.


thanks in advance

Scott
 
plasma2,...

Working on it. I will get back to you when finished.

zcolton
 
To all:

I've updated some code in my ASP phonebook.
You can now view a list of all users by selecting "*" in the alphabet listing. I also changed the sendmail feature to use CDO instead of JMAIL.

The new zip file containing the entire phonebook is at:

If there are any other requests please let me know.

zcolton
 
zcolton,

I have found all your postings to be every helpful. I was wondering if you could help me. I have the following code

SET obSys = CreateObject("ADSystemInfo")
SET adsUser = GetObject("LDAP://" & obSys.username)
FOR EACH group in adsUser.MemberOf
response.write (group & "<BR>")
NEXT

and it returns a listing of all the groups in the following format.

CN=Domain Users,CN=Users,DC=opc,DC=local

Here is my question is there a way to get LDAP to return just the group names? Like "Domain Users" instead of the line above?
 
This Post is JUST what all Network admin should read. Except I have a problem with zcolton's generic script. How can I request other information such as description, ou, msExchHomeServerName, and such? When I run the wonderful script, with modifications, I get a blank(white) page. Any help would be appreciated.
 
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