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1 ;; jabber-presence.el - roster and presence bookkeeping -*- 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-core)
23 (require 'jabber-iq)
24 (require 'jabber-alert)
25 (require 'jabber-util)
26 (require 'jabber-menu)
27 (require 'jabber-muc)
28
29 (defvar jabber-presence-element-functions nil
30 "List of functions returning extra elements for <presence/> stanzas.
31 Each function takes one argument, the connection, and returns a
32 possibly empty list of extra child element of the <presence/>
33 stanza.")
34
35 (defvar jabber-presence-history ()
36 "Keeps track of previously used presence status types.")
37
38 (add-to-list 'jabber-iq-set-xmlns-alist
39 (cons "jabber:iq:roster" (function (lambda (jc x) (jabber-process-roster jc x nil)))))
40 (defun jabber-process-roster (jc xml-data closure-data)
41 "Process an incoming roster infoquery result.
42 CLOSURE-DATA should be 'initial if initial roster push, nil otherwise.
43 JC is the Jabber connection.
44 XML-DATA is the parsed tree data from the stream (stanzas)
45 obtained from `xml-parse-region'."
46 (let ((roster (plist-get (fsm-get-state-data jc) :roster))
47 (from (jabber-xml-get-attribute xml-data 'from))
48 (type (jabber-xml-get-attribute xml-data 'type))
49 (id (jabber-xml-get-attribute xml-data 'id))
50 (username (plist-get (fsm-get-state-data jc) :username))
51 (server (plist-get (fsm-get-state-data jc) :server))
52 (resource (plist-get (fsm-get-state-data jc) :resource))
53 new-items changed-items deleted-items)
54 ;; Perform sanity check on "from" attribute: it should be either absent
55 ;; match our own JID, or match the server's JID (the latter is what
56 ;; Facebook does).
57 (if (not (or (null from)
58 (string= from server)
59 (string= from (concat username "@" server))
60 (string= from (concat username "@" server "/" resource))))
61 (message "Roster push with invalid \"from\": \"%s\" (expected \"%s\", \"%s@%s\" or \"%s@%s/%s\")"
62 from
63 server username server username server resource)
64
65 (dolist (item (jabber-xml-get-children (car (jabber-xml-get-children xml-data 'query)) 'item))
66 (let (roster-item
67 (jid (jabber-jid-symbol (jabber-xml-get-attribute item 'jid))))
68
69 ;; If subscripton="remove", contact is to be removed from roster
70 (if (string= (jabber-xml-get-attribute item 'subscription) "remove")
71 (progn
72 (if (jabber-jid-rostername jid)
73 (message "%s (%s) removed from roster" (jabber-jid-rostername jid) jid)
74 (message "%s removed from roster" jid))
75 (push jid deleted-items))
76
77 ;; Find contact if already in roster
78 (setq roster-item (car (memq jid roster)))
79
80 (if roster-item
81 (push roster-item changed-items)
82 ;; If not found, create a new roster item.
83 (unless (eq closure-data 'initial)
84 (if (jabber-xml-get-attribute item 'name)
85 (message "%s (%s) added to roster" (jabber-xml-get-attribute item 'name) jid)
86 (message "%s added to roster" jid)))
87 (setq roster-item jid)
88 (push roster-item new-items))
89
90 ;; If this is an initial push, we want to forget
91 ;; everything we knew about this contact before - e.g. if
92 ;; the contact was online when we disconnected and offline
93 ;; when we reconnect, we don't want to see stale presence
94 ;; information. This assumes that no contacts are shared
95 ;; between accounts.
96 (when (eq closure-data 'initial)
97 (setplist roster-item nil))
98
99 ;; Now, get all data associated with the contact.
100 (put roster-item 'name (jabber-xml-get-attribute item 'name))
101 (put roster-item 'subscription (jabber-xml-get-attribute item 'subscription))
102 (put roster-item 'ask (jabber-xml-get-attribute item 'ask))
103
104 ;; Since roster items can't be changed incrementally, we
105 ;; save the original XML to be able to modify it, instead of
106 ;; having to reproduce it. This is for forwards
107 ;; compatibility.
108 (put roster-item 'xml item)
109
110 (put roster-item 'groups
111 (mapcar (lambda (foo) (nth 2 foo))
112 (jabber-xml-get-children item 'group)))))))
113 ;; This is the function that does the actual updating and
114 ;; redrawing of the roster.
115 (jabber-roster-update jc new-items changed-items deleted-items)
116
117 (if (and id (string= type "set"))
118 (jabber-send-iq jc nil "result" nil
119 nil nil nil nil id)))
120
121 ;; After initial roster push, run jabber-post-connect-hooks. We do
122 ;; it here and not before since we want to have the entire roster
123 ;; before we receive any presence stanzas.
124 (when (eq closure-data 'initial)
125 (run-hook-with-args 'jabber-post-connect-hooks jc)))
126
127 (defun jabber-initial-roster-failure (jc xml-data _closure-data)
128 "Report the initial roster failure.
129
130 JC is the Jabber connection.
131 XML-DATA is the parsed tree data from the stream (stanzas)
132 obtained from `xml-parse-region'."
133 ;; If the initial roster request fails, let's report it, but run
134 ;; `jabber-post-connect-hooks' anyway. According to the spec, there is
135 ;; nothing exceptional about the server not returning a roster.
136 (jabber-report-success jc xml-data "Initial roster retrieval")
137 (run-hook-with-args 'jabber-post-connect-hooks jc))
138
139 (add-to-list 'jabber-presence-chain 'jabber-process-presence)
140 (defun jabber-process-presence (jc xml-data)
141 "Process incoming presence tags.
142
143 JC is the Jabber connection.
144 XML-DATA is the parsed tree data from the stream (stanzas)
145 obtained from `xml-parse-region'."
146 ;; XXX: use JC argument
147 (let ((roster (plist-get (fsm-get-state-data jc) :roster))
148 (from (jabber-xml-get-attribute xml-data 'from))
149 (to (jabber-xml-get-attribute xml-data 'to))
150 (type (jabber-xml-get-attribute xml-data 'type))
151 (presence-show (car (jabber-xml-node-children
152 (car (jabber-xml-get-children xml-data 'show)))))
153 (presence-status (car (jabber-xml-node-children
154 (car (jabber-xml-get-children xml-data 'status)))))
155 (error (car (jabber-xml-get-children xml-data 'error)))
156 (priority (string-to-number (or (car (jabber-xml-node-children (car (jabber-xml-get-children xml-data 'priority))))
157 "0"))))
158 (cond
159 ((string= type "subscribe")
160 (run-with-idle-timer 0.01 nil #'jabber-process-subscription-request jc from presence-status))
161
162 ((jabber-muc-presence-p xml-data)
163 (jabber-muc-process-presence jc xml-data))
164
165 (t
166 ;; XXX: Think about what to do about out-of-roster presences.
167 (let ((buddy (jabber-jid-symbol from)))
168 (if (memq buddy roster)
169 (let* ((oldstatus (get buddy 'show))
170 (resource (or (jabber-jid-resource from) ""))
171 (resource-plist (cdr (assoc resource
172 (get buddy 'resources))))
173 newstatus)
174 (cond
175 ((and (string= resource "") (member type '("unavailable" "error")))
176 ;; 'unavailable' or 'error' from bare JID means that all resources
177 ;; are offline.
178 (setq resource-plist nil)
179 (setq newstatus (if (string= type "error") "error" nil))
180 (let ((new-message (if error
181 (jabber-parse-error error)
182 presence-status)))
183 ;; erase any previous information
184 (put buddy 'resources nil)
185 (put buddy 'connected nil)
186 (put buddy 'show newstatus)
187 (put buddy 'status new-message)))
188
189 ((string= type "unavailable")
190 (setq resource-plist
191 (plist-put resource-plist 'connected nil))
192 (setq resource-plist
193 (plist-put resource-plist 'show nil))
194 (setq resource-plist
195 (plist-put resource-plist 'status
196 presence-status)))
197
198 ((string= type "error")
199 (setq newstatus "error")
200 (setq resource-plist
201 (plist-put resource-plist 'connected nil))
202 (setq resource-plist
203 (plist-put resource-plist 'show "error"))
204 (setq resource-plist
205 (plist-put resource-plist 'status
206 (if error
207 (jabber-parse-error error)
208 presence-status))))
209 ((or
210 (string= type "unsubscribe")
211 (string= type "subscribed")
212 (string= type "unsubscribed"))
213 ;; Do nothing, except letting the user know. The Jabber protocol
214 ;; places all this complexity on the server.
215 (setq newstatus type))
216 (t
217 (setq resource-plist
218 (plist-put resource-plist 'connected t))
219 (setq resource-plist
220 (plist-put resource-plist 'show (or presence-show "")))
221 (setq resource-plist
222 (plist-put resource-plist 'status
223 presence-status))
224 (setq resource-plist
225 (plist-put resource-plist 'priority priority))
226 (setq newstatus (or presence-show ""))))
227
228 (when resource-plist
229 ;; this is for `assoc-set!' in guile
230 (if (assoc resource (get buddy 'resources))
231 (setcdr (assoc resource (get buddy 'resources)) resource-plist)
232 (put buddy 'resources (cons (cons resource resource-plist) (get buddy 'resources))))
233 (jabber-prioritize-resources buddy))
234
235 (fsm-send jc (cons :roster-update buddy))
236
237 (dolist (hook '(jabber-presence-hooks jabber-alert-presence-hooks))
238 (run-hook-with-args hook
239 buddy
240 oldstatus
241 newstatus
242 (plist-get resource-plist 'status)
243 (funcall jabber-alert-presence-message-function
244 buddy
245 oldstatus
246 newstatus
247 (plist-get resource-plist 'status)))))))))))
248
249 (defun jabber-process-subscription-request (jc from presence-status)
250 "Process an incoming subscription request.
251 JC is the Jabber connection."
252 (with-current-buffer (jabber-chat-create-buffer jc from)
253 (ewoc-enter-last jabber-chat-ewoc (list :subscription-request presence-status :time (current-time)))
254
255 (dolist (hook '(jabber-presence-hooks jabber-alert-presence-hooks))
256 (run-hook-with-args hook (jabber-jid-symbol from) nil "subscribe" presence-status (funcall jabber-alert-presence-message-function (jabber-jid-symbol from) nil "subscribe" presence-status)))))
257
258 (defun jabber-subscription-accept-mutual (&rest ignored)
259 (message "Subscription accepted; reciprocal subscription request sent")
260 (jabber-subscription-reply "subscribed" "subscribe"))
261
262 (defun jabber-subscription-accept-one-way (&rest ignored)
263 (message "Subscription accepted")
264 (jabber-subscription-reply "subscribed"))
265
266 (defun jabber-subscription-decline (&rest ignored)
267 (message "Subscription declined")
268 (jabber-subscription-reply "unsubscribed"))
269
270 (defun jabber-subscription-reply (&rest types)
271 (let ((to (jabber-jid-user jabber-chatting-with)))
272 (dolist (type types)
273 (jabber-send-sexp jabber-buffer-connection `(presence ((to . ,to) (type . ,type)))))))
274
275 (defun jabber-prioritize-resources (buddy)
276 "Set connected, show and status properties for BUDDY.
277 Show status properties from highest-priority resource."
278 (let ((resource-alist (get buddy 'resources))
279 (highest-priority nil))
280 ;; Reset to nil at first, for cases (a) resource-alist is nil
281 ;; and (b) all resources are disconnected.
282 (put buddy 'connected nil)
283 (put buddy 'show nil)
284 (put buddy 'status nil)
285 (mapc #'(lambda (resource)
286 (let* ((resource-plist (cdr resource))
287 (priority (plist-get resource-plist 'priority)))
288 (if (plist-get resource-plist 'connected)
289 (when (or (null highest-priority)
290 (and priority
291 (> priority highest-priority)))
292 ;; if no priority specified, interpret as zero
293 (setq highest-priority (or priority 0))
294 (put buddy 'connected (plist-get resource-plist 'connected))
295 (put buddy 'show (plist-get resource-plist 'show))
296 (put buddy 'status (plist-get resource-plist 'status))
297 (put buddy 'resource (car resource)))
298
299 ;; if we have not found a connected resource yet, but this
300 ;; disconnected resource has a status message, display it.
301 (when (not (get buddy 'connected))
302 (if (plist-get resource-plist 'status)
303 (put buddy 'status (plist-get resource-plist 'status)))
304 (if (plist-get resource-plist 'show)
305 (put buddy 'show (plist-get resource-plist 'show)))))))
306 resource-alist)))
307
308 (defun jabber-count-connected-resources (buddy)
309 "Return the number of connected resources for BUDDY."
310 (let ((resource-alist (get buddy 'resources))
311 (count 0))
312 (dolist (resource resource-alist)
313 (if (plist-get (cdr resource) 'connected)
314 (setq count (1+ count))))
315 count))
316
317 ;;;###autoload
318 (defun jabber-send-presence (show status priority)
319 "Set presence for all accounts."
320 (interactive
321 (list
322 (completing-read "show: " '("" "away" "xa" "dnd" "chat")
323 nil t nil 'jabber-presence-history)
324 (jabber-read-with-input-method "status message: " *jabber-current-status*
325 '*jabber-status-history*)
326 (read-string "priority: " (int-to-string (if *jabber-current-priority*
327 *jabber-current-priority*
328 jabber-default-priority)))))
329
330 (setq *jabber-current-show* show *jabber-current-status* status)
331 (setq *jabber-current-priority*
332 (if (numberp priority) priority (string-to-number priority)))
333
334 (let (subelements-map)
335 ;; For each connection, we use a different set of subelements. We
336 ;; cache them, to only generate them once.
337
338 ;; Ordinary presence, with no specified recipient
339 (dolist (jc jabber-connections)
340 (let ((subelements (jabber-presence-children jc)))
341 (push (cons jc subelements) subelements-map)
342 (jabber-send-sexp-if-connected jc `(presence () ,@subelements))))
343
344 ;; Then send presence to groupchats
345 (dolist (gc *jabber-active-groupchats*)
346 (let* ((buffer (get-buffer (jabber-muc-get-buffer (car gc))))
347 (jc (when buffer
348 (buffer-local-value 'jabber-buffer-connection buffer)))
349 (subelements (cdr (assq jc subelements-map))))
350 (when jc
351 (jabber-send-sexp-if-connected
352 jc `(presence ((to . ,(concat (car gc) "/" (cdr gc))))
353 ,@subelements))))))
354
355 (jabber-display-roster))
356
357 (defun jabber-presence-children (jc)
358 "Return the children for a <presence/> stanza.
359 JC is the Jabber connection."
360 `(,(when (> (length *jabber-current-status*) 0)
361 `(status () ,*jabber-current-status*))
362 ,(when (> (length *jabber-current-show*) 0)
363 `(show () ,*jabber-current-show*))
364 ,(when *jabber-current-priority*
365 `(priority () ,(number-to-string *jabber-current-priority*)))
366 ,@(apply 'append (mapcar (lambda (f)
367 (funcall f jc))
368 jabber-presence-element-functions))))
369
370 (defun jabber-send-directed-presence (jc jid type)
371 "Send a directed presence stanza to JID.
372 TYPE is one of:
373 \"online\", \"away\", \"xa\", \"dnd\", \"chatty\":
374 Appear as present with the given status.
375 \"unavailable\":
376 Appear as offline.
377 \"probe\":
378 Ask the contact's server for updated presence.
379 \"subscribe\":
380 Ask for subscription to contact's presence.
381 (see also `jabber-send-subscription-request')
382 \"unsubscribe\":
383 Cancel your subscription to contact's presence.
384 \"subscribed\":
385 Accept contact's request for presence subscription.
386 (this is usually done within a chat buffer)
387 \"unsubscribed\":
388 Cancel contact's subscription to your presence.
389
390 JC is the Jabber connection."
391 (interactive
392 (list (jabber-read-account)
393 (jabber-read-jid-completing "Send directed presence to: ")
394 (completing-read "Type (default is online): "
395 '(("online")
396 ("away")
397 ("xa")
398 ("dnd")
399 ("chatty")
400 ("probe")
401 ("unavailable")
402 ("subscribe")
403 ("unsubscribe")
404 ("subscribed")
405 ("unsubscribed"))
406 nil t nil 'jabber-presence-history "online")))
407 (cond
408 ((member type '("probe" "unavailable"
409 "subscribe" "unsubscribe"
410 "subscribed" "unsubscribed"))
411 (jabber-send-sexp jc `(presence ((to . ,jid)
412 (type . ,type)))))
413
414 (t
415 (let ((*jabber-current-show*
416 (if (string= type "online")
417 ""
418 type))
419 (*jabber-current-status* nil))
420 (jabber-send-sexp jc `(presence ((to . ,jid))
421 ,@(jabber-presence-children jc)))))))
422
423 (defun jabber-send-away-presence (&optional status)
424 "Set status to away.
425 With prefix argument, ask for status message."
426 (interactive
427 (list
428 (when current-prefix-arg
429 (jabber-read-with-input-method
430 "status message: " *jabber-current-status* '*jabber-status-history*))))
431 (jabber-send-presence "away" (if status status *jabber-current-status*)
432 *jabber-current-priority*))
433
434 ;; XXX code duplication!
435 (defun jabber-send-xa-presence (&optional status)
436 "Send extended away presence.
437 With prefix argument, ask for status message."
438 (interactive
439 (list
440 (when current-prefix-arg
441 (jabber-read-with-input-method
442 "status message: " *jabber-current-status* '*jabber-status-history*))))
443 (jabber-send-presence "xa" (if status status *jabber-current-status*)
444 *jabber-current-priority*))
445
446 ;;;###autoload
447 (defun jabber-send-default-presence (&optional _ignore)
448 "Send default presence.
449 Default presence is specified by `jabber-default-show',
450 `jabber-default-status', and `jabber-default-priority'."
451 (interactive)
452 (jabber-send-presence
453 jabber-default-show jabber-default-status jabber-default-priority))
454
455 (defun jabber-send-current-presence (&optional _ignore)
456 "(Re-)send current presence.
457 That is, if presence has already been sent, use current settings,
458 otherwise send defaults (see `jabber-send-default-presence')."
459 (interactive)
460 (if *jabber-current-show*
461 (jabber-send-presence *jabber-current-show* *jabber-current-status*
462 *jabber-current-priority*)
463 (jabber-send-default-presence)))
464
465 (add-to-list 'jabber-jid-roster-menu (cons "Send subscription request"
466 'jabber-send-subscription-request))
467 (defun jabber-send-subscription-request (jc to &optional request)
468 "Send a subscription request to jid.
469 Show him your request text, if specified.
470
471 JC is the Jabber connection."
472 (interactive (list (jabber-read-account)
473 (jabber-read-jid-completing "to: ")
474 (jabber-read-with-input-method "request: ")))
475 (jabber-send-sexp jc
476 `(presence
477 ((to . ,to)
478 (type . "subscribe"))
479 ,@(when (and request (> (length request) 0))
480 (list `(status () ,request))))))
481
482 (defvar jabber-roster-group-history nil
483 "History of entered roster groups.")
484
485 (add-to-list 'jabber-jid-roster-menu
486 (cons "Add/modify roster entry" 'jabber-roster-change))
487 (defun jabber-roster-change (jc jid name groups)
488 "Add or change a roster item.
489 JC is the Jabber connection."
490 (interactive (let* ((jid (jabber-jid-symbol
491 (jabber-read-jid-completing "Add/change JID: ")))
492 (account (jabber-read-account))
493 (name (get jid 'name))
494 (groups (get jid 'groups))
495 (all-groups
496 (apply #'append
497 (mapcar
498 (lambda (j) (get j 'groups))
499 (plist-get (fsm-get-state-data account) :roster)))))
500 (when (string< emacs-version "22")
501 ;; Older emacsen want the completion table to be an alist...
502 (setq all-groups (mapcar #'list all-groups)))
503 (list account
504 jid (jabber-read-with-input-method (format "Name: (default `%s') " name) nil nil name)
505 (delete ""
506 (completing-read-multiple
507 (format
508 "Groups, comma-separated: (default %s) "
509 (if groups
510 (mapconcat #'identity groups ",")
511 "none"))
512 all-groups
513 nil nil nil
514 'jabber-roster-group-history
515 (mapconcat #'identity groups ",")
516 t)))))
517 ;; If new fields are added to the roster XML structure in a future standard,
518 ;; they will be clobbered by this function.
519 ;; XXX: specify account
520 (jabber-send-iq jc nil "set"
521 (list 'query (list (cons 'xmlns "jabber:iq:roster"))
522 (append
523 (list 'item (append
524 (list (cons 'jid (symbol-name jid)))
525 (if (and name (> (length name) 0))
526 (list (cons 'name name)))))
527 (mapcar #'(lambda (x) `(group () ,x))
528 groups)))
529 #'jabber-report-success "Roster item change"
530 #'jabber-report-success "Roster item change"))
531
532 (add-to-list 'jabber-jid-roster-menu
533 (cons "Delete roster entry" 'jabber-roster-delete))
534 (defun jabber-roster-delete (jc jid)
535 (interactive (list (jabber-read-account)
536 (jabber-read-jid-completing "Delete from roster: ")))
537 (jabber-send-iq jc nil "set"
538 `(query ((xmlns . "jabber:iq:roster"))
539 (item ((jid . ,jid)
540 (subscription . "remove"))))
541 #'jabber-report-success "Roster item removal"
542 #'jabber-report-success "Roster item removal"))
543
544 (defun jabber-roster-delete-jid-at-point ()
545 "Delete JID at point from roster.
546 Signal an error if there is no JID at point."
547 (interactive)
548 (let ((jid-at-point (get-text-property (point)
549 'jabber-jid))
550 (account (get-text-property (point) 'jabber-account)))
551 (if (and jid-at-point account
552 (or jabber-silent-mode (yes-or-no-p (format "Really delete %s from roster? " jid-at-point))))
553 (jabber-roster-delete account jid-at-point)
554 (error "No contact at point"))))
555
556 (defun jabber-roster-delete-group-from-jids (jc jids group)
557 "Delete group `group' from all JIDs.
558 JC is the Jabber connection."
559 (interactive)
560 (dolist (jid jids)
561 (jabber-roster-change
562 jc jid (get jid 'name)
563 (cl-remove-if-not (lambda (g) (not (string= g group)))
564 (get jid 'groups)))))
565
566 (defun jabber-roster-edit-group-from-jids (jc jids group)
567 "Edit group `group' from all JIDs.
568 JC is the Jabber connection."
569 (interactive)
570 (let ((new-group
571 (jabber-read-with-input-method
572 (format "New group: (default `%s') " group) nil nil group)))
573 (dolist (jid jids)
574 (jabber-roster-change
575 jc jid (get jid 'name)
576 (cl-remove-duplicates
577 (mapcar
578 (lambda (g) (if (string= g group)
579 new-group
580 g))
581 (get jid 'groups))
582 :test 'string=)))))
583
584
585 (provide 'jabber-presence)
586
587 ;;; arch-tag: b8616d4c-dde8-423e-86c7-da7b4928afc3