jabber-logon.el

   1 ;; jabber-logon.el - logon functions
   2
   3 ;; Copyright (C) 2003, 2004, 2007, 2008 - Magnus Henoch - mange@freemail.hu
   4 ;; Copyright (C) 2002, 2003, 2004 - tom berger - object@intelectronica.net
   5
   6 ;; This file is a part of jabber.el.
   7
   8 ;; This program is free software; you can redistribute it and/or modify
   9 ;; it under the terms of the GNU General Public License as published by
  10 ;; the Free Software Foundation; either version 2 of the License, or
  11 ;; (at your option) any later version.
  12
  13 ;; This program is distributed in the hope that it will be useful,
  14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;; GNU General Public License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with this program; if not, write to the Free Software
  20 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21
  22 (require 'jabber-xml)
  23 (require 'jabber-util)
  24 ;; sha1-el is known under two names
  25 (condition-case e
  26     (require 'sha1)
  27   (error (require 'sha1-el)))
  28
  29 (defun jabber-get-auth (jc to session-id)
  30   "Send IQ get request in namespace \"jabber:iq:auth\"."
  31   (jabber-send-iq jc to
  32                   "get"
  33                   `(query ((xmlns . "jabber:iq:auth"))
  34                           (username () ,(plist-get (fsm-get-state-data jc) :username)))
  35                   #'jabber-do-logon session-id
  36                   #'jabber-report-success "Impossible error - auth field request"))
  37
  38 (defun jabber-do-logon (jc xml-data session-id)
  39   "send username and password in logon attempt"
  40   (let* ((digest-allowed (jabber-xml-get-children (jabber-iq-query xml-data) 'digest))
  41          (passwd (when
  42                      (or digest-allowed
  43                          (plist-get (fsm-get-state-data jc) :encrypted)
  44                          (yes-or-no-p "Jabber server only allows cleartext password transmission!  Continue? "))
  45                    (or (plist-get (fsm-get-state-data jc) :password)
  46                        (jabber-read-password (jabber-connection-bare-jid jc)))))
  47          auth)
  48     (if (null passwd)
  49         (fsm-send jc :authentication-failure)
  50       (if digest-allowed
  51           (setq auth `(digest () ,(sha1 (concat session-id passwd))))
  52         (setq auth `(password () ,passwd)))
  53
  54       ;; For legacy authentication we must specify a resource.
  55       (unless (plist-get (fsm-get-state-data jc) :resource)
  56         ;; Yes, this is ugly.  Where is my encapsulation?
  57         (plist-put (fsm-get-state-data jc) :resource "emacs-jabber"))
  58
  59       (jabber-send-iq jc (plist-get (fsm-get-state-data jc) :server)
  60                       "set"
  61                       `(query ((xmlns . "jabber:iq:auth"))
  62                               (username () ,(plist-get (fsm-get-state-data jc) :username))
  63                               ,auth
  64                               (resource () ,(plist-get (fsm-get-state-data jc) :resource)))
  65                       #'jabber-process-logon passwd
  66                       #'jabber-process-logon nil))))
  67
  68 (defun jabber-process-logon (jc xml-data closure-data)
  69   "receive login success or failure, and request roster.
  70 CLOSURE-DATA should be the password on success and nil on failure."
  71   (if closure-data
  72       ;; Logon success
  73       (fsm-send jc (cons :authentication-success closure-data))
  74
  75     ;; Logon failure
  76     (jabber-report-success jc xml-data "Logon")
  77     (fsm-send jc :authentication-failure)))
  78
  79 (provide 'jabber-logon)
  80
  81 ;;; arch-tag: f24ebe5e-3420-44bb-af81-d4de21f378b0