lisp/net/sasl-ntlm.el

   1 ;;; sasl-ntlm.el --- NTLM (NT Lan Manager) module for the SASL client framework
   2
   3 ;; Copyright (C) 2000, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
   4
   5 ;; Author: Taro Kawagishi <tarok@transpulse.org>
   6 ;; Keywords: SASL, NTLM
   7 ;; Version: 1.00
   8 ;; Created: February 2001
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;; This is a SASL interface layer for NTLM authentication message
  28 ;; generation by ntlm.el
  29
  30 ;;; Code:
  31
  32 (require 'sasl)
  33 (require 'ntlm)
  34
  35 (defconst sasl-ntlm-steps
  36   '(ignore                              ;nothing to do before making
  37     sasl-ntlm-request                   ;authentication request
  38     sasl-ntlm-response)                 ;response to challenge
  39   "A list of functions to be called in sequence for the NTLM
  40 authentication steps.  They are called by `sasl-next-step'.")
  41
  42 (defun sasl-ntlm-request (client step)
  43   "SASL step function to generate a NTLM authentication request to the server.
  44 Called from `sasl-next-step'.
  45 CLIENT is a vector [mechanism user service server sasl-client-properties]
  46 STEP is a vector [<previous step function> <result of previous step function>]"
  47   (let ((user (sasl-client-name client)))
  48     (ntlm-build-auth-request user)))
  49
  50 (defun sasl-ntlm-response (client step)
  51   "SASL step function to generate a NTLM response against the server
  52 challenge stored in the 2nd element of STEP.  Called from `sasl-next-step'."
  53   (let* ((user (sasl-client-name client))
  54          (passphrase
  55           (sasl-read-passphrase (format "NTLM passphrase for %s: " user)))
  56          (challenge (sasl-step-data step)))
  57     (ntlm-build-auth-response challenge user
  58                               (ntlm-get-password-hashes passphrase))))
  59
  60 (put 'sasl-ntlm 'sasl-mechanism
  61      (sasl-make-mechanism "NTLM" sasl-ntlm-steps))
  62
  63 (provide 'sasl-ntlm)
  64
  65 ;; arch-tag: 1d9164c1-1df0-418f-b7ab-360157fd05dc
  66 ;;; sasl-ntlm.el ends here