Authenticate BSP application using LDAP

Hi,
Thanks to Durai Raja for his earlier inputs in setting up LDAP connector in SAP. We were able to connect to our LDAP from SAP ( We use Novell eDirectory 8.5).
I also wrote a small program as below and I am getting back results from LDAP. We want to build BSP application where users would enter LDAP User ID and password and we want to Authenticate BSP application based on this input. My questions are
1) Is it possible to Authenticate BSP application based on LDAP user ID and password.
2) IF so, what is the function module to use. I searched LDAP_* but did not find anything.
3) If we authenticate using LDAP user ID and password, do we have to provide SAP User id and password in SICF and allow all users to log in using same SAP user ID and password ?
Niranjan
data: dns_out type table of ldap_dnii,
      ldapinfo type ldap_dnii,
      attrs_io type table of ldap_atii.
call function 'LDAP_SIMPLEBIND'
exporting
    serverid = 'HQLDAP'.   " Logical Server ID set in LDAP tcode
if sy-subrc eq 0.
call function 'LDAP_SEARCH'
    exporting
      base     = 'o=xxxxxxxx' " Company's Base
      filter   = 'uid=xxxxxxxx' " Novell User ID or LDAP user ID
    tables
      dns_out = dns_out
      attrs_io = attrs_io.
if sy-subrc eq 0.
    loop at dns_out into ldapinfo.
    endloop.
endif.
endif.

Thanks Raja for your inputs. This is our requirement.
We have about 350 SAP Users and about 700 Novell Users (computers). We want to provide Employee Personnel Information like Vacation details, Savings/Insurance details in BSP application. But half of them cannot access because they don't have access to SAP. We cannot give access to all of them since we have only 400 licenses. So, we were thinking to Authenticate against Novell Used ID and password and show them their personnel details. We have a mapping between Novell Used ID and SAP HR Empl # and so we can easily get their information. So, we want users to authenticate using Novell Used ID and password (each Novell user ID is mapped as LDAP ID) and, if it is successful, show their personnel details.
How can we achieve this ?
Niranjan

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Authenticate BSP application using LDAP

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