Added Gnus pkg subtree

[packages] / xemacs-packages / gnus / lisp / sasl-ntlm.el

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+;;; sasl-ntlm.el --- NTLM (NT Lan Manager) module for the SASL client framework
+
+;; Copyright (C) 2000, 2007-2016 Free Software Foundation, Inc.
+
+;; Author: Taro Kawagishi <tarok@transpulse.org>
+;; Keywords: SASL, NTLM
+;; Version: 1.00
+;; Created: February 2001
+;; Package: sasl
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; This is a SASL interface layer for NTLM authentication message
+;; generation by ntlm.el
+
+;;; Code:
+
+(require 'sasl)
+(require 'ntlm)
+
+(defconst sasl-ntlm-steps
+  '(ignore                             ;nothing to do before making
+    sasl-ntlm-request                  ;authentication request
+    sasl-ntlm-response)                        ;response to challenge
+  "A list of functions to be called in sequence for the NTLM
+authentication steps.  They are called by `sasl-next-step'.")
+
+(defun sasl-ntlm-request (client step)
+  "SASL step function to generate a NTLM authentication request to the server.
+Called from `sasl-next-step'.
+CLIENT is a vector [mechanism user service server sasl-client-properties]
+STEP is a vector [<previous step function> <result of previous step function>]"
+  (let ((user (sasl-client-name client)))
+    (ntlm-build-auth-request user)))
+
+(defun sasl-ntlm-response (client step)
+  "SASL step function to generate a NTLM response against the server
+challenge stored in the 2nd element of STEP.  Called from `sasl-next-step'."
+  (let* ((user (sasl-client-name client))
+        (passphrase
+         (sasl-read-passphrase (format "NTLM passphrase for %s: " user)))
+        (challenge (sasl-step-data step)))
+    (ntlm-build-auth-response challenge user
+                             (ntlm-get-password-hashes passphrase))))
+
+(put 'sasl-ntlm 'sasl-mechanism
+     (sasl-make-mechanism "NTLM" sasl-ntlm-steps))
+
+(provide 'sasl-ntlm)
+
+;;; sasl-ntlm.el ends here