;;; ldap.el --- LDAP support for Emacs

;; Copyright (C) 1997 Free Software Foundation, Inc.

;; Author: Oscar Figueiredo <Oscar.Figueiredo@di.epfl.ch>
;; Maintainer: Oscar Figueiredo <Oscar.Figueiredo@di.epfl.ch>
;; Created: Jan 1998
;; Version: $Revision: 1.8 $
;; Keywords: help comm

;; This file is part of XEmacs

;; XEmacs is free software; you can redistribute it and/or modify it
;; under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; XEmacs is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with XEmacs; see the file COPYING.  If not, write to 
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:
;;    This file provides mid-level and user-level functions to access directory
;;    servers using the LDAP protocol (RFC 1777). 

;;; Installation:
;;    LDAP support must have been built into XEmacs.


;;; Code:

(eval-when '(load eval)
  (require 'ldap))

(defvar ldap-default-host nil
  "*Default LDAP server.")

(defvar ldap-host-parameters-alist nil
  "*An alist of per host options for LDAP transactions
The list elements look like (HOST PROP1 VAL1 PROP2 VAL2 ...)
HOST is the name of an LDAP server. PROPn and VALn are property/value pairs
describing parameters for the server.  Valid properties: 
  `binddn' is the distinguished name of the user to bind as 
    (in RFC 1779 syntax).
  `passwd' is the password to use for simple authentication.
  `auth' is the authentication method to use. 
    Possible values are: `simple', `krbv41' and `krbv42'.
  `base' is the base for the search as described in RFC 1779.
  `scope' is one of the three symbols `subtree', `base' or `onelevel'.
  `deref' is one of the symbols `never', `always', `search' or `find'.
  `timelimit' is the timeout limit for the connection in seconds.
  `sizelimit' is the maximum number of matches to return." )


(defun ldap-search (filter &optional host attributes attrsonly)
  "Perform an LDAP search.
FILTER is the search filter in RFC1558 syntax
HOST is the LDAP host on which to perform the search
ATTRIBUTES is a list of the specific attributes to retrieve, 
nil means retrieve all
ATTRSONLY if non nil retrieves the attributes only without 
the associated values.
Additional search parameters can be specified through 
`ldap-host-parameters-alist' which see."
  (interactive "sFilter:")
  (let (host-plist res ldap)
    (if (null host)
	(setq host ldap-default-host))
    (if (null host)
	(error "No LDAP host specified"))
    (setq host-plist
	  (cdr (assoc host ldap-host-parameters-alist)))
    (message "Opening LDAP connection to %s..." host)
    (setq ldap (ldap-open host host-plist))
    (message "Searching with LDAP on %s..." host)
    (setq res (ldap-search-internal ldap filter 
				    (plist-get host-plist 'base)
				    (plist-get host-plist 'scope)
				    attributes attrsonly))
    (ldap-close ldap)
    res))

		

(provide 'ldap)

;;; ldap.el ends here