1 ;;; gnus-int.el --- backend interface functions for Gnus
3 ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
4 ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 (eval-when-compile (require 'cl))
34 (autoload 'gnus-agent-expire "gnus-agent")
35 (autoload 'gnus-agent-regenerate-group "gnus-agent")
36 (autoload 'gnus-agent-read-servers-validate-native "gnus-agent")
37 (autoload 'gnus-agent-possibly-synchronize-flags-server "gnus-agent")
39 (defcustom gnus-open-server-hook nil
40 "Hook called just before opening connection to the news server."
44 (defcustom gnus-server-unopen-status nil
45 "The default status if the server is not able to open.
46 If the server is covered by Gnus agent, the possible values are
47 `denied', set the server denied; `offline', set the server offline;
48 nil, ask user. If the server is not covered by Gnus agent, set the
52 :type '(choice (const :tag "Ask" nil)
53 (const :tag "Deny server" denied)
54 (const :tag "Unplug Agent" offline)))
56 (defvar gnus-internal-registry-spool-current-method nil
57 "The current method, for the registry.")
60 (defun gnus-server-opened (gnus-command-method)
61 "Check whether a connection to GNUS-COMMAND-METHOD has been opened."
62 (unless (eq (gnus-server-status gnus-command-method)
64 (when (stringp gnus-command-method)
65 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
66 (funcall (inline (gnus-get-function gnus-command-method 'server-opened))
67 (nth 1 gnus-command-method))))
69 (defun gnus-status-message (gnus-command-method)
70 "Return the status message from GNUS-COMMAND-METHOD.
71 If GNUS-COMMAND-METHOD is a string, it is interpreted as a group
72 name. The method this group uses will be queried."
73 (let ((gnus-command-method
74 (if (stringp gnus-command-method)
75 (gnus-find-method-for-group gnus-command-method)
76 gnus-command-method)))
77 (funcall (gnus-get-function gnus-command-method 'status-message)
78 (nth 1 gnus-command-method))))
81 ;;; Server Communication
84 (defun gnus-start-news-server (&optional confirm)
85 "Open a method for getting news.
86 If CONFIRM is non-nil, the user will be asked for an NNTP server."
88 (if gnus-current-select-method
89 ;; Stream is already opened.
92 (unless gnus-nntp-service
93 (setq gnus-nntp-server nil))
95 ;; Read server name with completion.
96 (setq gnus-nntp-server
97 (completing-read "NNTP server: "
99 (cons (list gnus-nntp-server)
100 gnus-secondary-servers))
101 nil nil gnus-nntp-server)))
103 (when (and gnus-nntp-server
104 (stringp gnus-nntp-server)
105 (not (string= gnus-nntp-server "")))
106 (setq gnus-select-method
107 (cond ((or (string= gnus-nntp-server "")
108 (string= gnus-nntp-server "::"))
109 (list 'nnspool (system-name)))
110 ((string-match "^:" gnus-nntp-server)
111 (list 'nnmh gnus-nntp-server
112 (list 'nnmh-directory
113 (file-name-as-directory
115 (substring gnus-nntp-server 1) "~/")))
116 (list 'nnmh-get-new-mail nil)))
118 (list 'nntp gnus-nntp-server)))))
120 (setq how (car gnus-select-method))
124 (gnus-message 5 "Looking up local news spool..."))
127 (gnus-message 5 "Looking up mh spool..."))
130 (setq gnus-current-select-method gnus-select-method)
131 (gnus-run-hooks 'gnus-open-server-hook)
133 ;; Partially validate agent covered methods now that the
134 ;; gnus-select-method is known.
137 ;; NOTE: This is here for one purpose only. By validating
138 ;; the current select method, it converts the old 5.10.3,
139 ;; and earlier, format to the current format. That enables
140 ;; the agent code within gnus-open-server to function
142 (gnus-agent-read-servers-validate-native gnus-select-method))
145 ;; gnus-open-server-hook might have opened it
146 (gnus-server-opened gnus-select-method)
147 (gnus-open-server gnus-select-method)
151 "%s (%s) open error: '%s'. Continue? "
152 (car gnus-select-method) (cadr gnus-select-method)
153 (gnus-status-message gnus-select-method)))
154 (gnus-error 1 "Couldn't open server on %s"
155 (nth 1 gnus-select-method))))))
157 (defun gnus-check-group (group)
158 "Try to make sure that the server where GROUP exists is alive."
159 (let ((method (gnus-find-method-for-group group)))
160 (or (gnus-server-opened method)
161 (gnus-open-server method))))
163 (defun gnus-check-server (&optional method silent)
164 "Check whether the connection to METHOD is down.
165 If METHOD is nil, use `gnus-select-method'.
166 If it is down, start it up (again)."
167 (let ((method (or method gnus-select-method))
169 ;; Transform virtual server names into select methods.
170 (when (stringp method)
171 (setq method (gnus-server-to-method method)))
172 (if (gnus-server-opened method)
173 ;; The stream is already opened.
177 (gnus-message 5 "Opening %s server%s..." (car method)
178 (if (equal (nth 1 method) "") ""
179 (format " on %s" (nth 1 method)))))
180 (gnus-run-hooks 'gnus-open-server-hook)
183 (setq result (gnus-open-server method))
184 (quit (message "Quit gnus-check-server")
187 (gnus-message 5 "Opening %s server%s...%s" (car method)
188 (if (equal (nth 1 method) "") ""
189 (format " on %s" (nth 1 method)))
190 (if result "done" "failed")))))))
192 (defun gnus-get-function (method function &optional noerror)
193 "Return a function symbol based on METHOD and FUNCTION."
194 ;; Translate server names into methods.
196 (error "Attempted use of a nil select method"))
197 (when (stringp method)
198 (setq method (gnus-server-to-method method)))
199 ;; Check cache of constructed names.
200 (let* ((method-sym (if gnus-agent
201 (inline (gnus-agent-get-function method))
203 (method-fns (get method-sym 'gnus-method-functions))
204 (func (let ((method-fnlist-elt (assq function method-fns)))
205 (unless method-fnlist-elt
206 (setq method-fnlist-elt
208 (intern (format "%s-%s" method-sym function))))
209 (put method-sym 'gnus-method-functions
210 (cons method-fnlist-elt method-fns)))
211 (cdr method-fnlist-elt))))
212 ;; Maybe complain if there is no function.
213 (unless (fboundp func)
215 (error "Trying to require a method that doesn't exist"))
216 (require (car method))
217 (when (not (fboundp func))
220 (error "No such function: %s" func))))
225 ;;; Interface functions to the backends.
228 (defun gnus-open-server (gnus-command-method)
229 "Open a connection to GNUS-COMMAND-METHOD."
230 (when (stringp gnus-command-method)
231 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
232 (let ((elem (assoc gnus-command-method gnus-opened-servers))
233 (server (gnus-method-to-server-name gnus-command-method)))
234 ;; If this method was previously denied, we just return nil.
235 (if (eq (nth 1 elem) 'denied)
237 (gnus-message 1 "Denied server %s" server)
240 (let* ((open-server-function (gnus-get-function gnus-command-method 'open-server))
243 (funcall open-server-function
244 (nth 1 gnus-command-method)
245 (nthcdr 2 gnus-command-method))
247 (gnus-message 1 (format
248 "Unable to open server %s due to: %s"
249 server (error-message-string err)))
252 (gnus-message 1 "Quit trying to open server %s" server)
255 ;; If this hasn't been opened before, we add it to the list.
257 (setq elem (list gnus-command-method nil)
258 gnus-opened-servers (cons elem gnus-opened-servers)))
259 ;; Set the status of this server.
262 (if (eq open-server-function #'nnagent-open-server)
263 ;; The agent's backend has a "special" status
267 (gnus-agent-method-p gnus-command-method))
268 (cond (gnus-server-unopen-status
269 ;; Set the server's status to the unopen
270 ;; status. If that status is offline,
271 ;; recurse to open the agent's backend.
272 (setq open-offline (eq gnus-server-unopen-status 'offline))
273 gnus-server-unopen-status)
275 (not gnus-batch-mode)
278 "Unable to open server %s, go offline? "
280 (setq open-offline t)
283 ;; This agentized server was still denied
286 ;; This unagentized server must be denied
289 ;; NOTE: I MUST set the server's status to offline before this
290 ;; recursive call as this status will drive the
291 ;; gnus-get-function (called above) to return the agent's
294 ;; Recursively open this offline server to perform the
295 ;; open-server function of the agent's backend.
296 (let ((gnus-server-unopen-status 'denied))
297 ;; Bind gnus-server-unopen-status to avoid recursively
298 ;; prompting with "go offline?". This is only a concern
299 ;; when the agent's backend fails to open the server.
300 (gnus-open-server gnus-command-method))
301 (when (and (eq (cadr elem) 'ok) gnus-agent
302 (gnus-agent-method-p gnus-command-method))
304 (gnus-agent-possibly-synchronize-flags-server
305 gnus-command-method)))
308 (defun gnus-close-server (gnus-command-method)
309 "Close the connection to GNUS-COMMAND-METHOD."
310 (when (stringp gnus-command-method)
311 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
312 (funcall (gnus-get-function gnus-command-method 'close-server)
313 (nth 1 gnus-command-method)))
315 (defun gnus-request-list (gnus-command-method)
316 "Request the active file from GNUS-COMMAND-METHOD."
317 (when (stringp gnus-command-method)
318 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
319 (funcall (gnus-get-function gnus-command-method 'request-list)
320 (nth 1 gnus-command-method)))
322 (defun gnus-request-list-newsgroups (gnus-command-method)
323 "Request the newsgroups file from GNUS-COMMAND-METHOD."
324 (when (stringp gnus-command-method)
325 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
326 (funcall (gnus-get-function gnus-command-method 'request-list-newsgroups)
327 (nth 1 gnus-command-method)))
329 (defun gnus-request-newgroups (date gnus-command-method)
330 "Request all new groups since DATE from GNUS-COMMAND-METHOD."
331 (when (stringp gnus-command-method)
332 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
333 (let ((func (gnus-get-function gnus-command-method 'request-newgroups t)))
335 (funcall func date (nth 1 gnus-command-method)))))
337 (defun gnus-request-regenerate (gnus-command-method)
338 "Request a data generation from GNUS-COMMAND-METHOD."
339 (when (stringp gnus-command-method)
340 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
341 (funcall (gnus-get-function gnus-command-method 'request-regenerate)
342 (nth 1 gnus-command-method)))
344 (defun gnus-request-compact-group (group)
345 (let* ((method (gnus-find-method-for-group group))
346 (gnus-command-method method)
348 (funcall (gnus-get-function gnus-command-method
349 'request-compact-group)
350 (gnus-group-real-name group)
351 (nth 1 gnus-command-method) t)))
354 (defun gnus-request-compact (gnus-command-method)
355 "Request groups compaction from GNUS-COMMAND-METHOD."
356 (when (stringp gnus-command-method)
357 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
358 (funcall (gnus-get-function gnus-command-method 'request-compact)
359 (nth 1 gnus-command-method)))
361 (defun gnus-request-group (group &optional dont-check gnus-command-method)
362 "Request GROUP. If DONT-CHECK, no information is required."
363 (let ((gnus-command-method
364 (or gnus-command-method (inline (gnus-find-method-for-group group)))))
365 (when (stringp gnus-command-method)
366 (setq gnus-command-method
367 (inline (gnus-server-to-method gnus-command-method))))
368 (funcall (inline (gnus-get-function gnus-command-method 'request-group))
369 (gnus-group-real-name group) (nth 1 gnus-command-method)
372 (defun gnus-list-active-group (group)
373 "Request active information on GROUP."
374 (let ((gnus-command-method (gnus-find-method-for-group group))
375 (func 'list-active-group))
376 (when (gnus-check-backend-function func group)
377 (funcall (gnus-get-function gnus-command-method func)
378 (gnus-group-real-name group) (nth 1 gnus-command-method)))))
380 (defun gnus-request-group-description (group)
381 "Request a description of GROUP."
382 (let ((gnus-command-method (gnus-find-method-for-group group))
383 (func 'request-group-description))
384 (when (gnus-check-backend-function func group)
385 (funcall (gnus-get-function gnus-command-method func)
386 (gnus-group-real-name group) (nth 1 gnus-command-method)))))
388 (defun gnus-request-group-articles (group)
389 "Request a list of existing articles in GROUP."
390 (let ((gnus-command-method (gnus-find-method-for-group group))
391 (func 'request-group-articles))
392 (when (gnus-check-backend-function func group)
393 (funcall (gnus-get-function gnus-command-method func)
394 (gnus-group-real-name group) (nth 1 gnus-command-method)))))
396 (defun gnus-close-group (group)
397 "Request the GROUP be closed."
398 (let ((gnus-command-method (inline (gnus-find-method-for-group group))))
399 (funcall (gnus-get-function gnus-command-method 'close-group)
400 (gnus-group-real-name group) (nth 1 gnus-command-method))))
402 (defun gnus-retrieve-headers (articles group &optional fetch-old)
403 "Request headers for ARTICLES in GROUP.
404 If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
405 (let ((gnus-command-method (gnus-find-method-for-group group)))
407 ((and gnus-use-cache (numberp (car articles)))
408 (gnus-cache-retrieve-headers articles group fetch-old))
409 ((and gnus-agent (gnus-online gnus-command-method)
410 (gnus-agent-method-p gnus-command-method))
411 (gnus-agent-retrieve-headers articles group fetch-old))
413 (funcall (gnus-get-function gnus-command-method 'retrieve-headers)
414 articles (gnus-group-real-name group)
415 (nth 1 gnus-command-method) fetch-old)))))
417 (defun gnus-retrieve-articles (articles group)
418 "Request ARTICLES in GROUP."
419 (let ((gnus-command-method (gnus-find-method-for-group group)))
420 (funcall (gnus-get-function gnus-command-method 'retrieve-articles)
421 articles (gnus-group-real-name group)
422 (nth 1 gnus-command-method))))
424 (defun gnus-retrieve-groups (groups gnus-command-method)
425 "Request active information on GROUPS from GNUS-COMMAND-METHOD."
426 (when (stringp gnus-command-method)
427 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
428 (funcall (gnus-get-function gnus-command-method 'retrieve-groups)
429 groups (nth 1 gnus-command-method)))
431 (defun gnus-request-type (group &optional article)
432 "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
433 (let ((gnus-command-method (gnus-find-method-for-group group)))
434 (if (not (gnus-check-backend-function
435 'request-type (car gnus-command-method)))
437 (funcall (gnus-get-function gnus-command-method 'request-type)
438 (gnus-group-real-name group) article))))
440 (defun gnus-request-set-mark (group action)
441 "Set marks on articles in the back end."
442 (let ((gnus-command-method (gnus-find-method-for-group group)))
443 (if (not (gnus-check-backend-function
444 'request-set-mark (car gnus-command-method)))
446 (funcall (gnus-get-function gnus-command-method 'request-set-mark)
447 (gnus-group-real-name group) action
448 (nth 1 gnus-command-method)))))
450 (defun gnus-request-update-mark (group article mark)
451 "Allow the back end to change the mark the user tries to put on an article."
452 (let ((gnus-command-method (gnus-find-method-for-group group)))
453 (if (not (gnus-check-backend-function
454 'request-update-mark (car gnus-command-method)))
456 (funcall (gnus-get-function gnus-command-method 'request-update-mark)
457 (gnus-group-real-name group) article mark))))
459 (defun gnus-request-article (article group &optional buffer)
460 "Request the ARTICLE in GROUP.
461 ARTICLE can either be an article number or an article Message-ID.
462 If BUFFER, insert the article in that group."
463 (let ((gnus-command-method (gnus-find-method-for-group group)))
464 (funcall (gnus-get-function gnus-command-method 'request-article)
465 article (gnus-group-real-name group)
466 (nth 1 gnus-command-method) buffer)))
468 (defun gnus-request-head (article group)
469 "Request the head of ARTICLE in GROUP."
470 (let* ((gnus-command-method (gnus-find-method-for-group group))
471 (head (gnus-get-function gnus-command-method 'request-head t))
477 (gnus-cache-request-article article group))
478 (setq res (cons group article)
480 ;; Check the agent cache.
481 ((gnus-agent-request-article article group)
482 (setq res (cons group article)
484 ;; Use `head' function.
486 (setq res (funcall head article (gnus-group-real-name group)
487 (nth 1 gnus-command-method))))
488 ;; Use `article' function.
490 (setq res (gnus-request-article article group)
494 (set-buffer nntp-server-buffer)
495 (goto-char (point-min))
496 (when (search-forward "\n\n" nil t)
497 (delete-region (1- (point)) (point-max)))
498 (nnheader-fold-continuation-lines)))
501 (defun gnus-request-body (article group)
502 "Request the body of ARTICLE in GROUP."
503 (let* ((gnus-command-method (gnus-find-method-for-group group))
504 (head (gnus-get-function gnus-command-method 'request-body t))
510 (gnus-cache-request-article article group))
511 (setq res (cons group article)
513 ;; Check the agent cache.
514 ((gnus-agent-request-article article group)
515 (setq res (cons group article)
517 ;; Use `head' function.
519 (setq res (funcall head article (gnus-group-real-name group)
520 (nth 1 gnus-command-method))))
521 ;; Use `article' function.
523 (setq res (gnus-request-article article group)
527 (set-buffer nntp-server-buffer)
528 (goto-char (point-min))
529 (when (search-forward "\n\n" nil t)
530 (delete-region (point-min) (1- (point))))))
533 (defun gnus-request-post (gnus-command-method)
534 "Post the current buffer using GNUS-COMMAND-METHOD."
535 (when (stringp gnus-command-method)
536 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
537 (funcall (gnus-get-function gnus-command-method 'request-post)
538 (nth 1 gnus-command-method)))
540 (defun gnus-request-scan (group gnus-command-method)
541 "Request a SCAN being performed in GROUP from GNUS-COMMAND-METHOD.
542 If GROUP is nil, all groups on GNUS-COMMAND-METHOD are scanned."
543 (let ((gnus-command-method
544 (if group (gnus-find-method-for-group group) gnus-command-method))
545 (gnus-inhibit-demon t)
546 (mail-source-plugged gnus-plugged))
547 (when (or gnus-plugged
548 (not (gnus-agent-method-p gnus-command-method)))
549 (setq gnus-internal-registry-spool-current-method gnus-command-method)
550 (funcall (gnus-get-function gnus-command-method 'request-scan)
551 (and group (gnus-group-real-name group))
552 (nth 1 gnus-command-method)))))
554 (defsubst gnus-request-update-info (info gnus-command-method)
555 "Request that GNUS-COMMAND-METHOD update INFO."
556 (when (stringp gnus-command-method)
557 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
558 (when (gnus-check-backend-function
559 'request-update-info (car gnus-command-method))
560 (let ((group (gnus-info-group info)))
561 (and (funcall (gnus-get-function gnus-command-method
562 'request-update-info)
563 (gnus-group-real-name group)
564 info (nth 1 gnus-command-method))
565 ;; If the minimum article number is greater than 1, then all
566 ;; smaller article numbers are known not to exist; we'll
567 ;; artificially add those to the 'read range.
568 (let* ((active (gnus-active group))
571 (let* ((range (if (= min 2) 1 (cons 1 (1- min))))
572 (read (gnus-info-read info))
573 (new-read (gnus-range-add read (list range))))
574 (gnus-info-set-read info new-read)))
577 (defun gnus-request-expire-articles (articles group &optional force)
578 (let* ((gnus-command-method (gnus-find-method-for-group group))
581 (gnus-get-function gnus-command-method 'request-expire-articles)
582 articles (gnus-group-real-name group) (nth 1 gnus-command-method)
584 (when (and gnus-agent
585 (gnus-agent-method-p gnus-command-method))
586 (let ((expired-articles (gnus-sorted-difference articles not-deleted)))
587 (when expired-articles
588 (gnus-agent-expire expired-articles group 'force))))
591 (defun gnus-request-move-article (article group server accept-function
592 &optional last move-is-internal)
593 (let* ((gnus-command-method (gnus-find-method-for-group group))
594 (result (funcall (gnus-get-function gnus-command-method
595 'request-move-article)
596 article (gnus-group-real-name group)
597 (nth 1 gnus-command-method) accept-function last move-is-internal)))
598 (when (and result gnus-agent
599 (gnus-agent-method-p gnus-command-method))
600 (gnus-agent-unfetch-articles group (list article)))
603 (defun gnus-request-accept-article (group &optional gnus-command-method last
605 ;; Make sure there's a newline at the end of the article.
606 (when (stringp gnus-command-method)
607 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
608 (when (and (not gnus-command-method)
610 (setq gnus-command-method (or (gnus-find-method-for-group group)
611 (gnus-group-name-to-method group))))
612 (goto-char (point-max))
616 (let ((message-options message-options))
617 (message-options-set-recipient)
619 (message-narrow-to-head)
620 (let ((mail-parse-charset message-default-charset))
621 (mail-encode-encoded-word-buffer)))
622 (message-encode-message-body)))
623 (let ((gnus-command-method (or gnus-command-method
624 (gnus-find-method-for-group group)))
627 (gnus-get-function gnus-command-method 'request-accept-article)
628 (if (stringp group) (gnus-group-real-name group) group)
629 (cadr gnus-command-method)
631 (when (and gnus-agent (gnus-agent-method-p gnus-command-method))
632 (gnus-agent-regenerate-group group (list (cdr result))))
635 (defun gnus-request-replace-article (article group buffer &optional no-encode)
637 (let ((message-options message-options))
638 (message-options-set-recipient)
640 (message-narrow-to-head)
641 (let ((mail-parse-charset message-default-charset))
642 (mail-encode-encoded-word-buffer)))
643 (message-encode-message-body)))
644 (let* ((func (car (gnus-group-name-to-method group)))
645 (result (funcall (intern (format "%s-request-replace-article" func))
646 article (gnus-group-real-name group) buffer)))
647 (when (and gnus-agent (gnus-agent-method-p gnus-command-method))
648 (gnus-agent-regenerate-group group (list article)))
651 (defun gnus-request-associate-buffer (group)
652 (let ((gnus-command-method (gnus-find-method-for-group group)))
653 (funcall (gnus-get-function gnus-command-method 'request-associate-buffer)
654 (gnus-group-real-name group))))
656 (defun gnus-request-restore-buffer (article group)
657 "Request a new buffer restored to the state of ARTICLE."
658 (let ((gnus-command-method (gnus-find-method-for-group group)))
659 (funcall (gnus-get-function gnus-command-method 'request-restore-buffer)
660 article (gnus-group-real-name group)
661 (nth 1 gnus-command-method))))
663 (defun gnus-request-create-group (group &optional gnus-command-method args)
664 (when (stringp gnus-command-method)
665 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
666 (let ((gnus-command-method
667 (or gnus-command-method (gnus-find-method-for-group group))))
668 (funcall (gnus-get-function gnus-command-method 'request-create-group)
669 (gnus-group-real-name group) (nth 1 gnus-command-method) args)))
671 (defun gnus-request-delete-group (group &optional force)
672 (let* ((gnus-command-method (gnus-find-method-for-group group))
674 (funcall (gnus-get-function gnus-command-method 'request-delete-group)
675 (gnus-group-real-name group) force (nth 1 gnus-command-method))))
677 (gnus-cache-delete-group group)
678 (gnus-agent-delete-group group))
681 (defun gnus-request-rename-group (group new-name)
682 (let* ((gnus-command-method (gnus-find-method-for-group group))
684 (funcall (gnus-get-function gnus-command-method 'request-rename-group)
685 (gnus-group-real-name group)
686 (gnus-group-real-name new-name) (nth 1 gnus-command-method))))
688 (gnus-cache-rename-group group new-name)
689 (gnus-agent-rename-group group new-name))
692 (defun gnus-close-backends ()
693 ;; Send a close request to all backends that support such a request.
694 (let ((methods gnus-valid-select-methods)
695 (gnus-inhibit-demon t)
696 func gnus-command-method)
697 (while (setq gnus-command-method (pop methods))
698 (when (fboundp (setq func (intern
699 (concat (car gnus-command-method)
703 (defun gnus-asynchronous-p (gnus-command-method)
704 (let ((func (gnus-get-function gnus-command-method 'asynchronous-p t)))
708 (defun gnus-remove-denial (gnus-command-method)
709 (when (stringp gnus-command-method)
710 (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
711 (let* ((elem (assoc gnus-command-method gnus-opened-servers))
712 (status (cadr elem)))
713 ;; If this hasn't been opened before, we add it to the list.
714 (when (eq status 'denied)
715 ;; Set the status of this server.
716 (setcar (cdr elem) 'closed))))
720 ;;; gnus-int.el ends here