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;; jabber-ft-server.el - handle incoming file transfers, by JEP-0096
;; $Id: jabber-ft-server.el,v 1.2 2004/04/11 21:01:59 legoscia Exp $
;; Copyright (C) 2002, 2003, 2004 - tom berger - object@intelectronica.net
;; Copyright (C) 2003, 2004 - Magnus Henoch - mange@freemail.hu
;; This file is a part of jabber.el.
;; This program 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 of the License, or
;; (at your option) any later version.
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(require 'jabber-si-server)
(require 'jabber-util)
(defvar jabber-ft-sessions nil
"Alist, where keys are (sid jid), and values are buffers of the files.")
(add-to-list 'jabber-advertised-features "http://jabber.org/protocol/si/profile/file-transfer")
(add-to-list 'jabber-si-profiles
(list "http://jabber.org/protocol/si/profile/file-transfer"
'jabber-ft-accept
'jabber-ft-start))
(defun jabber-ft-accept (xml-data)
"Receive IQ stanza containing file transfer request, ask user"
(let* ((from (jabber-xml-get-attribute xml-data 'from))
(query (jabber-iq-query xml-data))
(si-id (jabber-xml-get-attribute query 'id))
;; TODO: check namespace
(file (car (jabber-xml-get-children query 'file)))
(name (jabber-xml-get-attribute file 'name))
(size (jabber-xml-get-attribute file 'size))
(date (jabber-xml-get-attribute file 'date))
(md5-hash (jabber-xml-get-attribute file 'hash))
(desc (car (jabber-xml-node-children
(car (jabber-xml-get-children file 'desc)))))
(range (car (jabber-xml-get-children file 'range))))
(unless (and name size)
;; both name and size must be present
(jabber-signal-error "modify" 'bad-request))
(let ((question (format
"%s is sending you the file %s (%s bytes).%s Accept? "
(jabber-jid-displayname from)
name
size
(if (not (zerop (length desc)))
(concat " Description: '" desc "'")
""))))
(unless (yes-or-no-p question)
(jabber-signal-error "cancel" 'forbidden)))
;; default is to save with given name, in current directory.
;; maybe that's bad; maybe should be customizable.
(let* ((file-name (read-file-name "Download to: " nil nil nil name))
(buffer (find-file-noselect file-name t t)))
(add-to-list 'jabber-ft-sessions
(cons (list si-id from) buffer)))
;; to support range, return something sensible here
nil))
(defun jabber-ft-start (jid sid stream-read-function)
"Fetch file from other user.
JID is JID of other user. SID is stream ID. STREAM-READ-FUNCTION
is function to call to get more data."
(let ((buffer (cdr (assoc (list sid jid) jabber-ft-sessions)))
data)
(with-current-buffer buffer
(goto-char (point-max))
(while (setq data (funcall stream-read-function jid sid))
(insert data)))))
(provide 'jabber-ft-server)
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