djavu-asus/elpa/jabber-20230715.456/jabber-logon.el

   1 ;; jabber-logon.el - logon functions  -*- lexical-binding: t; -*-
   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 ;; In Emacs 24, sha1 is built in, so this require is only needed for
  25 ;; earlier versions.  It's supposed to be a noop in Emacs 24, but
  26 ;; sometimes, for some people, it isn't, and fails with
  27 ;; (file-error "Cannot open load file" "sha1").
  28 (unless (fboundp 'sha1)
  29   (require 'sha1))
  30
  31 (defun jabber-get-auth (jc to session-id)
  32   "Send IQ get request in namespace \"jabber:iq:auth\".
  33 JC is the Jabber connection."
  34   (jabber-send-iq jc to
  35                   "get"
  36                   `(query ((xmlns . "jabber:iq:auth"))
  37                           (username () ,(plist-get (fsm-get-state-data jc) :username)))
  38                   #'jabber-do-logon session-id
  39                   #'jabber-report-success "Impossible error - auth field request"))
  40
  41 (defun jabber-do-logon (jc xml-data session-id)
  42   "Send username and password in logon attempt.
  43
  44 JC is the Jabber connection.
  45 XML-DATA is the parsed tree data from the stream (stanzas)
  46 obtained from `xml-parse-region'."
  47   (let* ((digest-allowed (jabber-xml-get-children (jabber-iq-query xml-data) 'digest))
  48          (passwd (when
  49                      (or digest-allowed
  50                          (plist-get (fsm-get-state-data jc) :encrypted)
  51                          (yes-or-no-p "Jabber server only allows cleartext password transmission!  Continue? "))
  52                    (or (plist-get (fsm-get-state-data jc) :password)
  53                        (jabber-read-password (jabber-connection-bare-jid jc)))))
  54          auth)
  55     (if (null passwd)
  56         (fsm-send jc :authentication-failure)
  57       (if digest-allowed
  58           (setq auth `(digest () ,(sha1 (concat session-id passwd))))
  59         (setq auth `(password () ,passwd)))
  60       ;; For legacy authentication we must specify a resource.
  61       (unless (plist-get (fsm-get-state-data jc) :resource)
  62         ;; Yes, this is ugly.  Where is my encapsulation?
  63         (plist-put (fsm-get-state-data jc) :resource "emacs-jabber"))
  64       (jabber-send-iq jc (plist-get (fsm-get-state-data jc) :server)
  65                 "set"
  66                 `(query ((xmlns . "jabber:iq:auth"))
  67                         (username () ,(plist-get (fsm-get-state-data jc) :username))
  68                         ,auth
  69                         (resource () ,(plist-get (fsm-get-state-data jc) :resource)))
  70                 #'jabber-process-logon passwd
  71                 #'jabber-process-logon nil))))
  72
  73 (defun jabber-process-logon (jc xml-data closure-data)
  74   "Receive login success or failure, and request roster.
  75 CLOSURE-DATA should be the password on success and nil on failure.
  76
  77 JC is the Jabber connection.
  78 XML-DATA is the parsed tree data from the stream (stanzas)
  79 obtained from `xml-parse-region'."
  80   (if closure-data
  81       ;; Logon success
  82       (fsm-send jc (cons :authentication-success closure-data))
  83
  84     ;; Logon failure
  85     (jabber-report-success jc xml-data "Logon")
  86     (fsm-send jc :authentication-failure)))
  87
  88 (provide 'jabber-logon)
  89
  90 ;;; arch-tag: f24ebe5e-3420-44bb-af81-d4de21f378b0