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;;; jabber-newdisco.el --- caching disco API
;; Copyright (C) 2005, 2008 Magnus Henoch
;; Author: Magnus Henoch <mange@freemail.hu>
;; This file 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, or (at your option)
;; any later version.
;; This file 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; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;---
;; Keys are ("jid" . "node"), where "node" is nil if appropriate.
;; Values are (identities features), where each identity is ["name"
;; "category" "type"], and each feature is a string.
(defvar jabber-disco-info-cache (make-hash-table :test 'equal))
;; Keys are ("jid" . "node"). Values are (items), where each
;; item is ["name" "jid" "node"] (some values may be nil).
(defvar jabber-disco-items-cache (make-hash-table :test 'equal))
;;; Info
(defun jabber-disco-get-info (jc jid node callback closure-data &optional force)
"Get disco info for JID and NODE, using connection JC.
Call CALLBACK with JC and CLOSURE-DATA as first and second
arguments and result as third argument when result is available.
On success, result is (IDENTITIES FEATURES), where each identity is [\"name\"
\"category\" \"type\"], and each feature is a string.
On error, result is the error node, recognizable by (eq (car result) 'error).
If CALLBACK is nil, just fetch data. If FORCE is non-nil,
invalidate cache and get fresh data."
(when force
(remhash (cons jid node) jabber-disco-info-cache))
(let ((result (gethash (cons jid node) jabber-disco-info-cache)))
(if result
(and callback (run-with-timer 0 nil callback jc closure-data result))
(jabber-send-iq jc jid
"get"
`(query ((xmlns . "http://jabber.org/protocol/disco#info")
,(when node `(node . ,node))))
#'jabber-disco-got-info (cons callback closure-data)
(lambda (jc xml-data callback-data)
(when (car callback-data)
(funcall (car callback-data) jc (cdr callback-data) (jabber-iq-error xml-data))))
(cons callback closure-data)))))
(defun jabber-disco-got-info (jc xml-data callback-data)
(let ((jid (jabber-xml-get-attribute xml-data 'from))
(node (jabber-xml-get-attribute (jabber-iq-query xml-data)
'node))
(result
(list
(mapcar
#'(lambda (id)
(vector (jabber-xml-get-attribute id 'name)
(jabber-xml-get-attribute id 'category)
(jabber-xml-get-attribute id 'type)))
(jabber-xml-get-children (jabber-iq-query xml-data) 'identity))
(mapcar
#'(lambda (feature)
(jabber-xml-get-attribute feature 'var))
(jabber-xml-get-children (jabber-iq-query xml-data) 'feature)))))
(puthash (cons jid node) result jabber-disco-info-cache)
(when (car callback-data)
(funcall (car callback-data) jc (cdr callback-data) result))))
(defun jabber-disco-get-info-immediately (jid node)
"Get cached disco info for JID and NODE.
Return nil if no info available.
Fill the cache with `jabber-disco-get-info'."
(gethash (cons jid node) jabber-disco-info-cache))
;;; Items
(defun jabber-disco-get-items (jc jid node callback closure-data &optional force)
"Get disco items for JID and NODE, using connection JC.
Call CALLBACK with JC and CLOSURE-DATA as first and second
arguments and items result as third argument when result is
available.
On success, result is a list of items, where each
item is [\"name\" \"jid\" \"node\"] (some values may be nil).
On error, result is the error node, recognizable by (eq (car result) 'error).
If CALLBACK is nil, just fetch data. If FORCE is non-nil,
invalidate cache and get fresh data."
(when force
(remhash (cons jid node) jabber-disco-items-cache))
(let ((result (gethash (cons jid node) jabber-disco-items-cache)))
(if result
(and callback (run-with-timer 0 nil callback jc closure-data result))
(jabber-send-iq jc jid
"get"
`(query ((xmlns . "http://jabber.org/protocol/disco#items")
,(when node `(node . ,node))))
#'jabber-disco-got-items (cons callback closure-data)
(lambda (jc xml-data callback-data)
(when (car callback-data)
(funcall (car callback-data) jc (cdr callback-data) (jabber-iq-error xml-data))))
(cons callback closure-data)))))
(defun jabber-disco-got-items (jc xml-data callback-data)
(let ((jid (jabber-xml-get-attribute xml-data 'from))
(node (jabber-xml-get-attribute (jabber-iq-query xml-data)
'node))
(result
(mapcar
#'(lambda (item)
(vector
(jabber-xml-get-attribute item 'name)
(jabber-xml-get-attribute item 'jid)
(jabber-xml-get-attribute item 'node)))
(jabber-xml-get-children (jabber-iq-query xml-data) 'item))))
(puthash (cons jid node) result jabber-disco-items-cache)
(when (car callback-data)
(funcall (car callback-data) jc (cdr callback-data) result))))
(defun jabber-disco-get-items-immediately (jid node)
(gethash (cons jid node) jabber-disco-items-cache))
;;; Publish
(defun jabber-disco-publish (jc node item-name item-jid item-node)
"Publish the given item under disco node NODE."
(jabber-send-iq jc nil
"set"
`(query ((xmlns . "http://jabber.org/protocol/disco#items")
,(when node `(node . ,node)))
(item ((action . "update")
(jid . ,item-jid)
,(when item-name
`(name . ,item-name))
,(when item-node
`(node . ,item-node)))))
'jabber-report-success "Disco publish"
'jabber-report-success "Disco publish"))
(defun jabber-disco-publish-remove (jc node item-jid item-node)
"Remove the given item from published disco items."
(jabber-send-iq jc nil
"set"
`(query ((xmlns . "http://jabber.org/protocol/disco#items")
,(when node `(node . ,node)))
(item ((action . "remove")
(jid . ,item-jid)
,(when item-node
`(node . ,item-node)))))
'jabber-report-success "Disco removal"
'jabber-report-success "Disco removal"))
(provide 'jabber-newdisco)
;; arch-tag: b47c06aa-cae6-11d9-b1c0-000a95c2fcd0
|
