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jabber-ahc.el
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jabber-ahc.el
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;; jabber-ahc.el - Ad-Hoc Commands by JEP-0050
;; Copyright (C) 2003, 2004, 2007, 2008 - Magnus Henoch - [email protected]
;; Copyright (C) 2002, 2003, 2004 - tom berger - [email protected]
;; 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-disco)
(require 'jabber-widget)
(defvar jabber-ahc-sessionid nil
"session id of Ad-Hoc Command session")
(defvar jabber-ahc-node nil
"node to send commands to")
(defvar jabber-ahc-commands nil
"Commands provided
This is an alist, where the keys are node names as strings (which
means that they must not conflict). The values are plists having
following properties:
acl - function taking connection object and JID of requester,
returning non-nil for access allowed. No function means
open for everyone.
name - name of command
func - function taking connection object and entire IQ stanza as
arguments and returning a <command/> node
Use the function `jabber-ahc-add' to add a command to this list.")
;;; SERVER
(add-to-list 'jabber-disco-info-nodes
(list "http://jabber.org/protocol/commands"
'((identity ((category . "automation")
(type . "command-list")
(name . "Ad-Hoc Command list")))
(feature ((var . "http://jabber.org/protocol/commands")))
(feature ((var . "http://jabber.org/protocol/disco#items")))
(feature
((var . "http://jabber.org/protocol/disco#info"))))))
(defun jabber-ahc-add (node name func acl)
"Add a command to internal lists.
NODE is the node name to be used. It must be unique.
NAME is the natural-language name of the command.
FUNC is a function taking the entire IQ stanza as single argument when
this command is invoked, and returns a <command/> node.
ACL is a function taking JID as single argument, returning non-nil for
access allowed. nil means open for everyone."
(add-to-list 'jabber-ahc-commands (cons node (list 'name name
'func func
'acl acl)))
(add-to-list 'jabber-disco-info-nodes
(list node `((identity ((category . "automation")
(type . "command-node")
(name . ,name)))
(feature ((var . "http://jabber.org/protocol/commands")))
(feature ((var . "http://jabber.org/protocol/disco#info")))
(feature ((var . "jabber:x:data")))))))
(jabber-disco-advertise-feature "http://jabber.org/protocol/commands")
(add-to-list 'jabber-disco-items-nodes
(list "http://jabber.org/protocol/commands" #'jabber-ahc-disco-items nil))
(defun jabber-ahc-disco-items (jc xml-data)
"Return commands in response to disco#items request"
(let ((jid (jabber-xml-get-attribute xml-data 'from)))
(mapcar (function
(lambda (command)
(let ((node (car command))
(plist (cdr command)))
(let ((acl (plist-get plist 'acl))
(name (plist-get plist 'name))
(func (plist-get plist 'func)))
(when (or (not (functionp acl))
(funcall acl jc jid))
`(item ((name . ,name)
(jid . ,(jabber-connection-jid jc))
(node . ,node))))))))
jabber-ahc-commands)))
(add-to-list 'jabber-iq-set-xmlns-alist
(cons "http://jabber.org/protocol/commands" 'jabber-ahc-process))
(defun jabber-ahc-process (jc xml-data)
(let ((to (jabber-xml-get-attribute xml-data 'from))
(id (jabber-xml-get-attribute xml-data 'id))
(node (jabber-xml-get-attribute (jabber-iq-query xml-data) 'node)))
;; find command
(let* ((plist (cdr (assoc node jabber-ahc-commands)))
(acl (plist-get plist 'acl))
(func (plist-get plist 'func)))
(if plist
;; found
(if (or (not (functionp acl))
(funcall acl jc to))
;; access control passed
(jabber-send-iq jc to "result"
(funcall func jc xml-data)
nil nil nil nil id)
;; ...or failed
(jabber-signal-error "cancel" 'not-allowed))
;; No such node
(jabber-signal-error "cancel" 'item-not-found)))))
;;; CLIENT
(add-to-list 'jabber-jid-service-menu
(cons "Request command list" 'jabber-ahc-get-list))
(defun jabber-ahc-get-list (jc to)
"Request list of ad-hoc commands. (JEP-0050)"
(interactive (list (jabber-read-account)
(jabber-read-jid-completing "Request command list from: " nil nil nil 'full t)))
(jabber-get-disco-items jc to "http://jabber.org/protocol/commands"))
(add-to-list 'jabber-jid-service-menu
(cons "Execute command" 'jabber-ahc-execute-command))
(defun jabber-ahc-execute-command (jc to node)
"Execute ad-hoc command. (JEP-0050)"
(interactive (list (jabber-read-account)
(jabber-read-jid-completing "Execute command of: " nil nil nil 'full t)
(jabber-read-node "Node of command: ")))
(jabber-send-iq jc to
"set"
`(command ((xmlns . "http://jabber.org/protocol/commands")
(node . ,node)
(action . "execute")))
#'jabber-process-data #'jabber-ahc-display
#'jabber-process-data "Command execution failed"))
(defun jabber-ahc-display (jc xml-data)
(let* ((from (jabber-xml-get-attribute xml-data 'from))
(query (jabber-iq-query xml-data))
(node (jabber-xml-get-attribute query 'node))
(notes (jabber-xml-get-children query 'note))
(sessionid (jabber-xml-get-attribute query 'sessionid))
(status (jabber-xml-get-attribute query 'status))
(actions (car (jabber-xml-get-children query 'actions)))
xdata
(inhibit-read-only t))
(make-local-variable 'jabber-ahc-sessionid)
(setq jabber-ahc-sessionid sessionid)
(make-local-variable 'jabber-ahc-node)
(setq jabber-ahc-node node)
(make-local-variable 'jabber-buffer-connection)
(setq jabber-buffer-connection jc)
(dolist (x (jabber-xml-get-children query 'x))
(when (string= (jabber-xml-get-attribute x 'xmlns) "jabber:x:data")
(setq xdata x)))
(cond
((string= status "executing")
(insert "Executing command\n\n"))
((string= status "completed")
(insert "Command completed\n\n"))
((string= status "canceled")
(insert "Command canceled\n\n")))
(dolist (note notes)
(let ((note-type (jabber-xml-get-attribute note 'type)))
(cond
((string= note-type "warn")
(insert "Warning: "))
((string= note-type "error")
(insert "Error: ")))
(insert (car (jabber-xml-node-children note)) "\n")))
(insert "\n")
(when xdata
(jabber-init-widget-buffer from)
(let ((formtype (jabber-xml-get-attribute xdata 'type)))
(if (string= formtype "result")
(jabber-render-xdata-search-results xdata)
(jabber-render-xdata-form xdata)
(when (string= status "executing")
(let ((button-titles
(cond
((null actions)
'(complete cancel))
(t
(let ((children (mapcar #'jabber-xml-node-name (jabber-xml-node-children actions)))
(default-action (jabber-xml-get-attribute actions 'execute)))
(if (or (null default-action) (memq (intern default-action) children))
children
(cons (intern default-action) children)))))))
(dolist (button-title button-titles)
(widget-create 'push-button :notify `(lambda (&rest ignore) (jabber-ahc-submit (quote ,button-title))) (symbol-name button-title))
(widget-insert "\t")))
(widget-insert "\n"))))
(widget-setup)
(widget-minor-mode 1))))
(defun jabber-ahc-submit (action)
"Submit Ad-Hoc Command."
(jabber-send-iq jabber-buffer-connection jabber-submit-to
"set"
`(command ((xmlns . "http://jabber.org/protocol/commands")
(sessionid . ,jabber-ahc-sessionid)
(node . ,jabber-ahc-node)
(action . ,(symbol-name action)))
,(if (and (not (eq action 'cancel))
(eq jabber-form-type 'xdata))
(jabber-parse-xdata-form)))
#'jabber-process-data #'jabber-ahc-display
#'jabber-process-data "Command execution failed"))
(provide 'jabber-ahc)
;;; arch-tag: c0d5ed8c-50cb-44e1-8e0f-4058b79ee353