1 ;;; nnimap.el --- imap backend for Gnus
2 ;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
4 ;; Author: Simon Josefsson <jas@pdc.kth.se>
5 ;; Jim Radford <radford@robby.caltech.edu>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
27 ;; Todo, major things:
29 ;; o Fix Gnus to view correct number of unread/total articles in group buffer
30 ;; o Fix Gnus to handle leading '.' in group names (fixed?)
31 ;; o Finish disconnected mode (moving articles between mailboxes unplugged)
33 ;; o MIME (partial article fetches)
34 ;; o Split to other backends, different split rules for different
37 ;; Todo, minor things:
39 ;; o Don't require half of Gnus -- backends should be standalone
40 ;; o Verify that we don't use IMAP4rev1 specific things (RFC2060 App B)
41 ;; o Dont uid fetch 1,* in nnimap-retrive-groups (slow)
42 ;; o Split up big fetches (1,* header especially) in smaller chunks
43 ;; o What do I do with gnus-newsgroup-*?
44 ;; o Tell Gnus about new groups (how can we tell?)
45 ;; o Respooling (fix Gnus?) (unnecessery?)
46 ;; o Add support for the following: (if applicable)
47 ;; request-list-newsgroups, request-regenerate
49 ;; request-associate-buffer, request-restore-buffer,
50 ;; o Do The Right Thing when UIDVALIDITY changes (what's the right thing?)
51 ;; o Support RFC2221 (Login referrals)
52 ;; o IMAP2BIS compatibility? (RFC2061)
53 ;; o ACAP stuff (perhaps a different project, would be nice to ACAPify
55 ;; o What about Gnus's article editing, can we support it? NO!
56 ;; o Use \Draft to support the draft group??
57 ;; o Duplicate suppression
76 (defconst nnimap-version "nnimap 0.131")
78 (defvoo nnimap-address nil
79 "Address of physical IMAP server. If nil, use the virtual server's name.")
81 (defvoo nnimap-server-port nil
82 "Port number on physical IMAP server.
83 If nil, defaults to 993 for SSL connections and 143 otherwise.")
85 ;; Splitting variables
87 (defvar nnimap-split-crosspost t
88 "If non-nil, do crossposting if several split methods match the mail.
89 If nil, the first match found will be used.")
91 (defvar nnimap-split-inbox nil
92 "*Name of mailbox to split mail from.
94 Mail is read from this mailbox and split according to rules in
97 This can be a string or a list of strings.")
99 (defvar nnimap-split-rule nil
100 "*Mail will be split according to theese rules.
102 Mail is read from mailbox(es) specified in `nnimap-split-inbox'.
104 If you'd like, for instance, one mail group for mail from the
105 \"gnus-imap\" mailing list, one group for junk mail and leave
106 everything else in the incoming mailbox, you could do something like
109 (setq nnimap-split-rule '((\"INBOX.gnus-imap\" \"From:.*gnus-imap\")
110 (\"INBOX.junk\" \"Subject:.*buy\")))
112 As you can see, `nnimap-split-rule' is a list of lists, where the first
113 element in each \"rule\" is the name of the IMAP mailbox, and the
114 second is a regexp that nnimap will try to match on the header to find
117 The second element can also be a function. In that case, it will be
118 called narrowed to the headers with the first element of the rule as
119 the argument. It should return a non-nil value if it thinks that the
120 mail belongs in that group.
122 This variable can also have a function as its value, the function will
123 be called with the headers narrowed and should return a group where it
124 thinks the article should be splitted to. See `nnimap-split-fancy'.
126 To allow for different split rules on different virtual servers, and
127 even different split rules in different inboxes on the same server,
128 the syntax of this variable have been extended along the lines of:
130 (setq nnimap-split-rule
131 '((\"my1server\" (\".*\" ((\"ding\" \"ding@gnus.org\")
132 (\"junk\" \"From:.*Simon\")))
133 (\"my2server\" (\"INBOX\" nnimap-split-fancy))
134 (\"my[34]server\" (\".*\" ((\"private\" \"To:.*Simon\")
135 (\"junk\" my-junk-func)))))
137 The virtual server name is in fact a regexp, so that the same rules
138 may apply to several servers. In the example, the servers
139 \"my3server\" and \"my4server\" both use the same rules. Similarly,
140 the inbox string is also a regexp. The actual splitting rules are as
141 before, either a function, or a list with group/regexp or
142 group/function elements.")
144 (defvar nnimap-split-predicate "UNSEEN UNDELETED"
145 "The predicate used to find articles to split.
146 If you use another IMAP client to peek on articles but always would
147 like nnimap to split them once it's started, you could change this to
148 \"UNDELETED\". Other available predicates are available in
149 RFC2060 section 6.4.4.")
151 (defvar nnimap-split-fancy nil
152 "Like `nnmail-split-fancy', which see.")
154 ;; Authorization / Privacy variables
156 (defvoo nnimap-auth-method nil
159 (defvoo nnimap-stream nil
160 "How nnimap will connect to the server.
162 The default, nil, will try to use the \"best\" method the server can
167 1) you want to connect with SSL. The SSL integration with IMAP is
168 brain-dead so you'll have to tell it specifically.
170 2) your server is more capable than your environment -- i.e. your
171 server accept Kerberos login's but you haven't installed the
172 `imtest' program or your machine isn't configured for Kerberos.
174 Possible choices: kerberos4, ssl, network")
176 (defvoo nnimap-authenticator nil
177 "How nnimap authenticate itself to the server.
179 The default, nil, will try to use the \"best\" method the server can
182 There is only one reason for fiddling with this variable, and that is
183 if your server is more capable than your environment -- i.e. you
184 connect to a server that accept Kerberos login's but you haven't
185 installed the `imtest' program or your machine isn't configured for
188 Possible choices: kerberos4, cram-md5, login, anonymous.")
190 (defvoo nnimap-directory (nnheader-concat gnus-directory "overview/")
191 "Directory to keep NOV cache files for nnimap groups.
192 See also `nnimap-nov-file-name'.")
194 (defvoo nnimap-nov-file-name "nnimap."
195 "NOV cache base filename.
196 The group name and `nnimap-nov-file-name-suffix' will be appended. A
197 typical complete file name would be
198 ~/News/overview/nnimap.pdc.INBOX.ding.nov, or
199 ~/News/overview/nnimap/pdc/INBOX/ding/nov if
200 `nnmail-use-long-file-names' is nil")
202 (defvoo nnimap-nov-file-name-suffix ".novcache"
203 "Suffix for NOV cache base filename.")
205 (defvoo nnimap-nov-is-evil nil
206 "If non-nil, nnimap will never generate or use a local nov database for this backend.
207 Using nov databases will speed up header fetching considerably.
208 Unlike other backends, you do not need to take special care if you
209 flip this variable.")
211 (defvoo nnimap-expunge-on-close 'always ; 'ask, 'never
212 "Whether to expunge a group when it is closed.
213 When a IMAP group with articles marked for deletion is closed, this
214 variable determine if nnimap should actually remove the articles or
217 If always, nnimap always perform a expunge when closing the group.
218 If never, nnimap never expunges articles marked for deletion.
219 If ask, nnimap will ask you if you wish to expunge marked articles.
221 When setting this variable to `never', you can only expunge articles
222 by using `G x' (gnus-group-nnimap-expunge) from the Group buffer.")
224 (defvoo nnimap-list-pattern "*"
225 "A string LIMIT or list of strings with mailbox wildcards used to limit available groups.
226 See below for available wildcards.
228 The LIMIT string can be a cons cell (REFERENCE . LIMIT), where
229 REFERENCE will be passed as the first parameter to LIST/LSUB. The
230 semantics of this are server specific, on the University of Washington
231 server you can specify a directory.
234 '(\"INBOX\" \"mail/*\" (\"~friend/mail/\" . \"list/*\"))
236 There are two wildcards * and %. * matches everything, % matches
237 everything in the current hierarchy.")
239 (defvoo nnimap-news-groups nil
240 "IMAP support a news-like mode, also known as bulletin board mode, where replies is sent via IMAP instead of SMTP.
242 This variable should contain a regexp matching groups where you wish
243 replies to be stored to the mailbox directly.
246 '(\"^[^I][^N][^B][^O][^X].*$\")
248 This will match all groups not beginning with \"INBOX\".
250 Note that there is nothing technically different between mail-like and
251 news-like mailboxes. If you wish to have a group with todo items or
252 similar which you wouldn't want to set up a mailing list for, you can
253 use this to make replies go directly to the group.")
255 (defvoo nnimap-server-address nil
256 "Obsolete. Use `nnimap-address'.")
258 (defcustom nnimap-authinfo-file "~/.authinfo"
259 "Authorization information for IMAP servers. In .netrc format."
262 (repeat :tag "Entries"
265 :value ("" ("login" . "") ("password" . ""))
269 (const :format "" "login")
270 (string :format "Login: %v"))
272 (const :format "" "password")
273 (string :format "Password: %v")))))))
275 (defcustom nnimap-prune-cache t
276 "If non-nil, nnimap check whether articles still exist on server before using data stored in NOV cache."
279 (defvar nnimap-request-list-method 'imap-mailbox-list
280 "Method to use to request a list of all folders from the server.
281 If this is 'imap-mailbox-lsub, then use a server-side subscription list to
282 restrict visible folders.")
284 ;; Internal variables:
286 (defvar nnimap-debug nil
287 "Name of buffer to record debugging info.
288 For example: (setq nnimap-debug \"*nnimap-debug*\")")
289 (defvar nnimap-current-move-server nil)
290 (defvar nnimap-current-move-group nil)
291 (defvar nnimap-current-move-article nil)
292 (defvar nnimap-length)
293 (defvar nnimap-progress-chars '(?| ?/ ?- ?\\))
294 (defvar nnimap-progress-how-often 20)
295 (defvar nnimap-counter)
296 (defvar nnimap-callback-callback-function nil
297 "Gnus callback the nnimap asynchronous callback should call.")
298 (defvar nnimap-callback-buffer nil
299 "Which buffer the asynchronous article prefetch callback should work in.")
300 (defvar nnimap-server-buffer-alist nil) ;; Map server name to buffers.
301 (defvar nnimap-current-server nil) ;; Current server
302 (defvar nnimap-server-buffer nil) ;; Current servers' buffer
306 (nnoo-define-basics nnimap)
308 ;; Utility functions:
310 (defsubst nnimap-get-server-buffer (server)
311 "Return buffer for SERVER, if nil use current server."
312 (cadr (assoc (or server nnimap-current-server) nnimap-server-buffer-alist)))
314 (defun nnimap-possibly-change-server (server)
315 "Return buffer for SERVER, changing the current server as a side-effect.
316 If SERVER is nil, uses the current server."
317 (setq nnimap-current-server (or server nnimap-current-server)
318 nnimap-server-buffer (nnimap-get-server-buffer nnimap-current-server)))
320 (defun nnimap-verify-uidvalidity (group server)
321 "Verify stored uidvalidity match current one in GROUP on SERVER."
322 (let* ((gnusgroup (gnus-group-prefixed-name
323 group (gnus-server-to-method
324 (format "nnimap:%s" server))))
325 (new-uidvalidity (imap-mailbox-get 'uidvalidity))
326 (old-uidvalidity (gnus-group-get-parameter gnusgroup 'uidvalidity))
327 (dir (file-name-as-directory (expand-file-name nnimap-directory)))
328 (nameuid (nnheader-translate-file-chars
329 (concat nnimap-nov-file-name
330 (if (equal server "")
332 server) "." group "." old-uidvalidity
333 nnimap-nov-file-name-suffix) t))
334 (file (if (or nnmail-use-long-file-names
335 (file-exists-p (expand-file-name nameuid dir)))
336 (expand-file-name nameuid dir)
338 (mm-encode-coding-string
339 (nnheader-replace-chars-in-string nameuid ?. ?/)
340 nnmail-pathname-coding-system)
343 (if (not (equal old-uidvalidity new-uidvalidity))
345 (gnus-delete-file file)
346 (gnus-group-set-parameter gnusgroup 'uidvalidity new-uidvalidity)
348 (gnus-group-add-parameter gnusgroup (cons 'uidvalidity new-uidvalidity))
351 (defun nnimap-before-find-minmax-bugworkaround ()
352 "Function called before iterating through mailboxes with
353 `nnimap-find-minmax-uid'."
354 ;; XXX this is for UoW imapd problem, it doesn't notice new mail in
355 ;; currently selected mailbox without a re-select/examine.
356 (or (null (imap-current-mailbox nnimap-server-buffer))
357 (imap-mailbox-unselect nnimap-server-buffer)))
359 (defun nnimap-find-minmax-uid (group &optional examine)
360 "Find lowest and highest active article nummber in GROUP.
361 If EXAMINE is non-nil the group is selected read-only."
362 (with-current-buffer nnimap-server-buffer
363 (when (imap-mailbox-select group examine)
365 (when (> (imap-mailbox-get 'exists) 0)
366 (imap-fetch "1,*" "UID" nil 'nouidfetch)
367 (imap-message-map (lambda (uid Uid)
368 (setq minuid (if minuid (min minuid uid) uid)
369 maxuid (if maxuid (max maxuid uid) uid)))
371 (list (imap-mailbox-get 'exists) minuid maxuid)))))
373 (defun nnimap-possibly-change-group (group &optional server)
374 "Make GROUP the current group, and SERVER the current server."
375 (when (nnimap-possibly-change-server server)
376 (with-current-buffer nnimap-server-buffer
377 (if (or (null group) (imap-current-mailbox-p group))
379 (if (imap-mailbox-select group)
380 (if (or (nnimap-verify-uidvalidity
381 group (or server nnimap-current-server))
382 (zerop (imap-mailbox-get 'exists group))
385 "nnimap: Group %s is not uidvalid. Continue? " group)))
387 (imap-mailbox-unselect)
388 (error "nnimap: Group %s is not uid-valid." group))
389 (nnheader-report 'nnimap (imap-error-text)))))))
391 (defun nnimap-replace-whitespace (string)
392 "Return STRING with all whitespace replaced with space."
394 (while (string-match "[\r\n\t]+" string)
395 (setq string (replace-match " " t t string)))
398 ;; Required backend functions
400 (defun nnimap-retrieve-headers-progress ()
401 "Hook to insert NOV line for current article into `nntp-server-buffer'."
402 (and (numberp nnmail-large-newsgroup)
403 (zerop (% (incf nnimap-counter) nnimap-progress-how-often))
404 (> nnimap-length nnmail-large-newsgroup)
405 (nnheader-message 6 "nnimap: Retrieving headers... %c"
406 (nth (/ (% nnimap-counter
407 (* (length nnimap-progress-chars)
408 nnimap-progress-how-often))
409 nnimap-progress-how-often)
410 nnimap-progress-chars)))
411 (with-current-buffer nntp-server-buffer
412 (let (headers lines chars uid mbx)
413 (with-current-buffer nnimap-server-buffer
414 (setq uid imap-current-message
415 mbx imap-current-mailbox
416 headers (nnimap-demule
417 (if (imap-capability 'IMAP4rev1)
418 ;; xxx don't just use car? alist doesn't contain
419 ;; anything else now, but it might...
420 (nth 2 (car (imap-message-get uid 'BODYDETAIL)))
421 (imap-message-get uid 'RFC822.HEADER)))
422 lines (imap-body-lines (imap-message-body imap-current-message))
423 chars (imap-message-get imap-current-message 'RFC822.SIZE)))
426 (buffer-disable-undo)
428 (nnheader-ms-strip-cr)
429 (nnheader-fold-continuation-lines)
430 (subst-char-in-region (point-min) (point-max) ?\t ? )
431 (let ((head (nnheader-parse-head 'naked)))
432 (mail-header-set-number head uid)
433 (mail-header-set-chars head chars)
434 (mail-header-set-lines head lines)
435 (mail-header-set-xref
436 head (format "%s %s:%d" (system-name) mbx uid))
439 (defun nnimap-retrieve-which-headers (articles fetch-old)
440 "Get a range of articles to fetch based on ARTICLES and FETCH-OLD."
441 (with-current-buffer nnimap-server-buffer
442 (if (numberp (car-safe articles))
445 (imap-range-to-message-set
446 (gnus-compress-sequence
447 (append (gnus-uncompress-sequence
449 (cons (if (numberp fetch-old)
450 (max 1 (- (car articles) fetch-old))
452 (1- (car articles)))))
454 (mapcar (lambda (msgid)
456 (format "HEADER Message-Id %s" msgid)))
459 (defun nnimap-group-overview-filename (group server)
460 "Make pathname for GROUP on SERVER."
461 (let* ((dir (file-name-as-directory (expand-file-name nnimap-directory)))
462 (uidvalidity (gnus-group-get-parameter
463 (gnus-group-prefixed-name
464 group (gnus-server-to-method
465 (format "nnimap:%s" server)))
467 (name (nnheader-translate-file-chars
468 (concat nnimap-nov-file-name
469 (if (equal server "")
471 server) "." group nnimap-nov-file-name-suffix) t))
472 (nameuid (nnheader-translate-file-chars
473 (concat nnimap-nov-file-name
474 (if (equal server "")
476 server) "." group "." uidvalidity
477 nnimap-nov-file-name-suffix) t))
478 (oldfile (if (or nnmail-use-long-file-names
479 (file-exists-p (expand-file-name name dir)))
480 (expand-file-name name dir)
482 (mm-encode-coding-string
483 (nnheader-replace-chars-in-string name ?. ?/)
484 nnmail-pathname-coding-system)
486 (newfile (if (or nnmail-use-long-file-names
487 (file-exists-p (expand-file-name nameuid dir)))
488 (expand-file-name nameuid dir)
490 (mm-encode-coding-string
491 (nnheader-replace-chars-in-string nameuid ?. ?/)
492 nnmail-pathname-coding-system)
494 (if (and (file-exists-p oldfile)
495 (not (file-exists-p newfile)))
497 (message "nnimap: Upgrading novcache filename...")
499 (rename-file oldfile newfile)
503 (defun nnimap-retrieve-headers-from-file (group server)
504 (with-current-buffer nntp-server-buffer
505 (let ((nov (nnimap-group-overview-filename group server)))
506 (when (file-exists-p nov)
507 (mm-insert-file-contents nov)
508 (set-buffer-modified-p nil)
509 (let ((min (ignore-errors (goto-char (point-min))
510 (read (current-buffer))))
511 (max (ignore-errors (goto-char (point-max))
513 (read (current-buffer)))))
514 (if (and (numberp min) (numberp max))
516 ;; junk, remove it, it's saved later
520 (defun nnimap-retrieve-headers-from-server (articles group server)
521 (with-current-buffer nnimap-server-buffer
522 (let ((imap-fetch-data-hook '(nnimap-retrieve-headers-progress))
523 (nnimap-length (gnus-range-length articles))
525 (imap-fetch (imap-range-to-message-set articles)
526 (concat "(UID RFC822.SIZE BODY "
528 (append '(Subject From Date Message-Id
529 References In-Reply-To Xref)
531 nnmail-extra-headers))))
532 (if (imap-capability 'IMAP4rev1)
533 (format "BODY.PEEK[HEADER.FIELDS %s])" headers)
534 (format "RFC822.HEADER.LINES %s)" headers)))))
535 (and (numberp nnmail-large-newsgroup)
536 (> nnimap-length nnmail-large-newsgroup)
537 (nnheader-message 6 "nnimap: Retrieving headers...done")))))
539 (defun nnimap-use-nov-p (group server)
540 (or gnus-nov-is-evil nnimap-nov-is-evil
541 (unless (and (gnus-make-directory
543 (nnimap-group-overview-filename group server)))
545 (nnimap-group-overview-filename group server)))
546 (message "nnimap: Nov cache not writable, %s"
547 (nnimap-group-overview-filename group server)))))
549 (deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
550 (when (nnimap-possibly-change-group group server)
551 (with-current-buffer nntp-server-buffer
553 (if (nnimap-use-nov-p group server)
554 (nnimap-retrieve-headers-from-server
555 (gnus-compress-sequence articles) group server)
556 (let (uids cached low high)
557 (when (setq uids (nnimap-retrieve-which-headers articles fetch-old)
559 high (car (last uids)))
560 (if (setq cached (nnimap-retrieve-headers-from-file group server))
562 ;; fetch articles with uids before cache block
563 (when (< low (car cached))
564 (goto-char (point-min))
565 (nnimap-retrieve-headers-from-server
566 (cons low (1- (car cached))) group server))
567 ;; fetch articles with uids after cache block
568 (when (> high (cdr cached))
569 (goto-char (point-max))
570 (nnimap-retrieve-headers-from-server
571 (cons (1+ (cdr cached)) high) group server))
572 (when nnimap-prune-cache
573 ;; remove nov's for articles which has expired on server
574 (goto-char (point-min))
575 (dolist (uid (gnus-set-difference articles uids))
576 (when (re-search-forward (format "^%d\t" uid) nil t)
577 (gnus-delete-line)))))
578 ;; nothing cached, fetch whole range from server
579 (nnimap-retrieve-headers-from-server
580 (cons low high) group server))
581 (when (buffer-modified-p)
583 1 (point-max) (nnimap-group-overview-filename group server)
585 (nnheader-nov-delete-outside-range low high))))
588 (defun nnimap-open-connection (server)
589 (if (not (imap-open nnimap-address nnimap-server-port nnimap-stream
590 nnimap-authenticator nnimap-server-buffer))
591 (nnheader-report 'nnimap "Can't open connection to server %s" server)
592 (unless (or (imap-capability 'IMAP4 nnimap-server-buffer)
593 (imap-capability 'IMAP4rev1 nnimap-server-buffer))
594 (imap-close nnimap-server-buffer)
595 (nnheader-report 'nnimap "Server %s is not IMAP4 compliant" server))
596 (let* ((list (gnus-parse-netrc nnimap-authinfo-file))
597 (port (if nnimap-server-port
598 (int-to-string nnimap-server-port)
600 (alist (gnus-netrc-machine list (or nnimap-server-address
601 nnimap-address server)
603 (user (gnus-netrc-get alist "login"))
604 (passwd (gnus-netrc-get alist "password")))
605 (if (imap-authenticate user passwd nnimap-server-buffer)
607 (push (list server nnimap-server-buffer)
608 nnimap-server-buffer-alist)
609 (nnimap-possibly-change-server server))
610 (imap-close nnimap-server-buffer)
611 (kill-buffer nnimap-server-buffer)
612 (nnheader-report 'nnimap "Could not authenticate to %s" server)))))
614 (deffoo nnimap-open-server (server &optional defs)
615 (nnheader-init-server-buffer)
616 (if (nnimap-server-opened server)
618 (unless (assq 'nnimap-server-buffer defs)
619 (push (list 'nnimap-server-buffer (concat " *nnimap* " server)) defs))
620 ;; translate `nnimap-server-address' to `nnimap-address' in defs
621 ;; for people that configured nnimap with a very old version
622 (unless (assq 'nnimap-address defs)
623 (if (assq 'nnimap-server-address defs)
624 (push (list 'nnimap-address
625 (cadr (assq 'nnimap-server-address defs))) defs)
626 (push (list 'nnimap-address server) defs)))
627 (nnoo-change-server 'nnimap server defs)
628 (with-current-buffer (get-buffer-create nnimap-server-buffer)
629 (nnoo-change-server 'nnimap server defs))
630 (or (and nnimap-server-buffer
631 (imap-opened nnimap-server-buffer))
632 (nnimap-open-connection server))))
634 (deffoo nnimap-server-opened (&optional server)
635 "Whether SERVER is opened.
636 If SERVER is the current virtual server, and the connection to the
637 physical server is alive, this function return a non-nil value. If
638 SERVER is nil, it is treated as the current server."
639 ;; clean up autologouts??
640 (and (or server nnimap-current-server)
641 (nnoo-server-opened 'nnimap (or server nnimap-current-server))
642 (imap-opened (nnimap-get-server-buffer server))))
644 (deffoo nnimap-close-server (&optional server)
645 "Close connection to server and free all resources connected to it.
646 Return nil if the server couldn't be closed for some reason."
647 (let ((server (or server nnimap-current-server)))
648 (when (or (nnimap-server-opened server)
649 (imap-opened (nnimap-get-server-buffer server)))
650 (imap-close (nnimap-get-server-buffer server))
651 (kill-buffer (nnimap-get-server-buffer server))
652 (setq nnimap-server-buffer nil
653 nnimap-current-server nil
654 nnimap-server-buffer-alist
655 (delq server nnimap-server-buffer-alist)))
656 (nnoo-close-server 'nnimap server)))
658 (deffoo nnimap-request-close ()
659 "Close connection to all servers and free all resources that the backend have reserved.
660 All buffers that have been created by that
661 backend should be killed. (Not the nntp-server-buffer, though.) This
662 function is generally only called when Gnus is shutting down."
663 (mapcar (lambda (server) (nnimap-close-server (car server)))
664 nnimap-server-buffer-alist)
665 (setq nnimap-server-buffer-alist nil))
667 (deffoo nnimap-status-message (&optional server)
668 "This function returns the last error message from server."
669 (when (nnimap-possibly-change-server server)
670 (nnoo-status-message 'nnimap server)))
672 (defun nnimap-demule (string)
673 (funcall (if (and (fboundp 'string-as-multibyte)
674 (subrp (symbol-function 'string-as-multibyte)))
679 (defun nnimap-callback ()
680 (remove-hook 'imap-fetch-data-hook 'nnimap-callback)
681 (with-current-buffer nnimap-callback-buffer
683 (with-current-buffer nnimap-server-buffer
685 (if (imap-capability 'IMAP4rev1)
686 ;; xxx don't just use car? alist doesn't contain
687 ;; anything else now, but it might...
688 (nth 2 (car (imap-message-get (imap-current-message) 'BODYDETAIL)))
689 (imap-message-get (imap-current-message) 'RFC822)))))
690 (nnheader-ms-strip-cr)
691 (funcall nnimap-callback-callback-function t)))
693 (defun nnimap-request-article-part (article part prop &optional
694 group server to-buffer detail)
695 (when (nnimap-possibly-change-group group server)
696 (let ((article (if (stringp article)
697 (car-safe (imap-search
698 (format "HEADER Message-Id %s" article)
699 nnimap-server-buffer))
702 (gnus-message 10 "nnimap: Fetching (part of) article %d..." article)
703 (if (not nnheader-callback-function)
704 (with-current-buffer (or to-buffer nntp-server-buffer)
706 (let ((data (imap-fetch article part prop nil
707 nnimap-server-buffer)))
708 (insert (nnimap-demule (if detail
711 (nnheader-ms-strip-cr)
712 (gnus-message 10 "nnimap: Fetching (part of) article %d...done"
715 (nnheader-report 'nnimap "No such article: %s"
716 (imap-error-text nnimap-server-buffer))
717 (cons group article)))
718 (add-hook 'imap-fetch-data-hook 'nnimap-callback)
719 (setq nnimap-callback-callback-function nnheader-callback-function
720 nnimap-callback-buffer nntp-server-buffer)
721 (imap-fetch-asynch article part nil nnimap-server-buffer)
722 (cons group article))))))
724 (deffoo nnimap-asynchronous-p ()
727 (deffoo nnimap-request-article (article &optional group server to-buffer)
728 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
729 (nnimap-request-article-part
730 article "BODY.PEEK[]" 'BODYDETAIL group server to-buffer 'detail)
731 (nnimap-request-article-part
732 article "RFC822.PEEK" 'RFC822 group server to-buffer)))
734 (deffoo nnimap-request-head (article &optional group server to-buffer)
735 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
736 (nnimap-request-article-part
737 article "BODY.PEEK[HEADER]" 'BODYDETAIL group server to-buffer 'detail)
738 (nnimap-request-article-part
739 article "RFC822.HEADER" 'RFC822.HEADER group server to-buffer)))
741 (deffoo nnimap-request-body (article &optional group server to-buffer)
742 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
743 (nnimap-request-article-part
744 article "BODY.PEEK[TEXT]" 'BODYDETAIL group server to-buffer 'detail)
745 (nnimap-request-article-part
746 article "RFC822.TEXT.PEEK" 'RFC822.TEXT group server to-buffer)))
748 (deffoo nnimap-request-group (group &optional server fast)
749 (nnimap-request-update-info-internal
751 (gnus-get-info (gnus-group-prefixed-name
752 group (gnus-server-to-method (format "nnimap:%s" server))))
754 (when (nnimap-possibly-change-group group server)
755 (nnimap-before-find-minmax-bugworkaround)
758 ((null (setq info (nnimap-find-minmax-uid group t)))
759 (nnheader-report 'nnimap "Could not get active info for %s"
762 (nnheader-insert "211 %d %d %d %s\n" (or (nth 0 info) 0)
763 (max 1 (or (nth 1 info) 1))
764 (or (nth 2 info) 0) group)
765 (nnheader-report 'nnimap "Group %s selected" group)
768 (defun nnimap-close-group (group &optional server)
769 (with-current-buffer nnimap-server-buffer
770 (when (and (imap-opened)
771 (nnimap-possibly-change-group group server))
772 (case nnimap-expunge-on-close
773 ('always (imap-mailbox-expunge)
774 (imap-mailbox-close))
775 ('ask (if (and (imap-search "DELETED")
776 (gnus-y-or-n-p (format
777 "Expunge articles in group `%s'? "
778 imap-current-mailbox)))
779 (progn (imap-mailbox-expunge)
780 (imap-mailbox-close))
781 (imap-mailbox-unselect)))
782 (t (imap-mailbox-unselect)))
783 (not imap-current-mailbox))))
785 (defun nnimap-pattern-to-list-arguments (pattern)
787 (cons (car-safe p) (or (cdr-safe p) p)))
788 (if (and (listp pattern)
789 (listp (cdr pattern)))
793 (deffoo nnimap-request-list (&optional server)
794 (when (nnimap-possibly-change-server server)
795 (with-current-buffer nntp-server-buffer
797 (gnus-message 5 "nnimap: Generating active list%s..."
798 (if (> (length server) 0) (concat " for " server) ""))
799 (nnimap-before-find-minmax-bugworkaround)
800 (with-current-buffer nnimap-server-buffer
801 (dolist (pattern (nnimap-pattern-to-list-arguments nnimap-list-pattern))
802 (dolist (mbx (funcall nnimap-request-list-method
803 (cdr pattern) (car pattern)))
804 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags mbx))
805 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
807 (with-current-buffer nntp-server-buffer
808 (insert (format "\"%s\" %d %d y\n"
809 mbx (or (nth 2 info) 0)
810 (max 1 (or (nth 1 info) 1)))))))))))
811 (gnus-message 5 "nnimap: Generating active list%s...done"
812 (if (> (length server) 0) (concat " for " server) ""))
815 (deffoo nnimap-request-post (&optional server)
817 (dolist (mbx (message-unquote-tokens
818 (message-tokenize-header
819 (message-fetch-field "Newsgroups") ", ")) success)
820 (let ((to-newsgroup (gnus-group-prefixed-name mbx gnus-command-method)))
821 (or (gnus-active to-newsgroup)
822 (gnus-activate-group to-newsgroup)
823 (if (gnus-y-or-n-p (format "No such group: %s. Create it? "
825 (or (and (gnus-request-create-group
826 to-newsgroup gnus-command-method)
827 (gnus-activate-group to-newsgroup nil nil
828 gnus-command-method))
829 (error "Couldn't create group %s" to-newsgroup)))
830 (error "No such group: %s" to-newsgroup))
831 (unless (nnimap-request-accept-article mbx (nth 1 gnus-command-method))
832 (setq success nil))))))
834 ;; Optional backend functions
836 (deffoo nnimap-retrieve-groups (groups &optional server)
837 (when (nnimap-possibly-change-server server)
838 (gnus-message 5 "nnimap: Checking mailboxes...")
839 (with-current-buffer nntp-server-buffer
841 (nnimap-before-find-minmax-bugworkaround)
842 (dolist (group groups)
843 (gnus-message 7 "nnimap: Checking mailbox %s" group)
844 (or (member "\\NoSelect"
845 (imap-mailbox-get 'list-flags group nnimap-server-buffer))
846 (let ((info (nnimap-find-minmax-uid group 'examine)))
847 (insert (format "\"%s\" %d %d y\n" group
849 (max 1 (or (nth 1 info) 1))))))))
850 (gnus-message 5 "nnimap: Checking mailboxes...done")
853 (deffoo nnimap-request-update-info-internal (group info &optional server)
854 (when (nnimap-possibly-change-group group server)
855 (when info;; xxx what does this mean? should we create a info?
856 (with-current-buffer nnimap-server-buffer
857 (gnus-message 5 "nnimap: Updating info for %s..."
858 (gnus-info-group info))
860 (when (nnimap-mark-permanent-p 'read)
862 ;; read info could contain articles marked unread by other
863 ;; imap clients! we correct this
864 (setq seen (gnus-uncompress-range (gnus-info-read info))
865 unseen (imap-search "UNSEEN UNDELETED")
866 seen (gnus-set-difference seen unseen)
867 ;; seen might lack articles marked as read by other
868 ;; imap clients! we correct this
869 seen (append seen (imap-search "SEEN"))
872 seen (gnus-compress-sequence seen t)
873 ;; we can't return '(1) since this isn't a "list of ranges",
874 ;; and we can't return '((1)) since g-list-of-unread-articles
875 ;; is buggy so we return '((1 . 1)).
876 seen (if (and (integerp (car seen))
878 (list (cons (car seen) (car seen)))
880 (gnus-info-set-read info seen)))
882 (mapcar (lambda (pred)
883 (when (and (nnimap-mark-permanent-p (cdr pred))
884 (member (nnimap-mark-to-flag (cdr pred))
885 (imap-mailbox-get 'flags)))
888 (nnimap-update-alist-soft
890 (gnus-compress-sequence
891 (imap-search (nnimap-mark-to-predicate (cdr pred))))
892 (gnus-info-marks info))
894 gnus-article-mark-lists)
896 ;; nnimap mark dormant article as ticked too (for other clients)
897 ;; so we remove that mark for gnus since we support dormant
900 (nnimap-update-alist-soft
902 (gnus-remove-from-range
903 (cdr-safe (assoc 'tick (gnus-info-marks info)))
904 (cdr-safe (assoc 'dormant (gnus-info-marks info))))
905 (gnus-info-marks info))
908 (gnus-message 5 "nnimap: Updating info for %s...done"
909 (gnus-info-group info))
913 (deffoo nnimap-request-type (group &optional article)
914 (if (and nnimap-news-groups (string-match nnimap-news-groups group))
918 (deffoo nnimap-request-set-mark (group actions &optional server)
919 (when (nnimap-possibly-change-group group server)
920 (with-current-buffer nnimap-server-buffer
922 (gnus-message 7 "nnimap: Setting marks in %s..." group)
923 (while (setq action (pop actions))
924 (let ((range (nth 0 action))
925 (what (nth 1 action))
926 (cmdmarks (nth 2 action))
928 ;; cache flags are pointless on the server
929 (setq cmdmarks (delq 'cache cmdmarks))
930 ;; flag dormant articles as ticked
931 (if (memq 'dormant cmdmarks)
932 (setq cmdmarks (cons 'tick cmdmarks)))
933 ;; remove stuff we are forbidden to store
934 (mapcar (lambda (mark)
935 (if (imap-message-flag-permanent-p
936 (nnimap-mark-to-flag mark))
937 (setq marks (cons mark marks))))
939 (when (and range marks)
940 (cond ((eq what 'del)
941 (imap-message-flags-del
942 (imap-range-to-message-set range)
943 (nnimap-mark-to-flag marks nil t)))
945 (imap-message-flags-add
946 (imap-range-to-message-set range)
947 (nnimap-mark-to-flag marks nil t)))
949 (imap-message-flags-set
950 (imap-range-to-message-set range)
951 (nnimap-mark-to-flag marks nil t)))))))
952 (gnus-message 7 "nnimap: Setting marks in %s...done" group))))
955 (defun nnimap-split-fancy ()
956 "Like nnmail-split-fancy, but uses nnimap-split-fancy."
957 (let ((nnmail-split-fancy nnimap-split-fancy))
958 (nnmail-split-fancy)))
960 (defun nnimap-split-to-groups (rules)
961 ;; tries to match all rules in nnimap-split-rule against content of
962 ;; nntp-server-buffer, returns a list of groups that matched.
963 (with-current-buffer nntp-server-buffer
964 ;; Fold continuation lines.
965 (goto-char (point-min))
966 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
967 (replace-match " " t t))
968 (if (functionp rules)
970 (let (to-groups regrepp)
972 (dolist (rule rules to-groups)
973 (let ((group (car rule))
974 (regexp (cadr rule)))
975 (goto-char (point-min))
976 (when (and (if (stringp regexp)
978 (setq regrepp (string-match "\\\\[0-9&]" group))
979 (re-search-forward regexp nil t))
980 (funcall regexp group))
981 ;; Don't enter the article into the same group twice.
982 (not (assoc group to-groups)))
984 (nnmail-expand-newtext group)
987 (or nnimap-split-crosspost
988 (throw 'split-done to-groups))))))))))
990 (defun nnimap-assoc-match (key alist)
992 (while (and alist (not element))
993 (if (string-match (car (car alist)) key)
994 (setq element (car alist)))
995 (setq alist (cdr alist)))
998 (defun nnimap-split-find-rule (server inbox)
999 (if (and (listp nnimap-split-rule) (listp (car nnimap-split-rule))
1000 (list (cdar nnimap-split-rule)) (listp (cadar nnimap-split-rule)))
1002 (cadr (nnimap-assoc-match inbox (cdr (nnimap-assoc-match
1003 server nnimap-split-rule))))
1006 (defun nnimap-split-find-inbox (server)
1007 (if (listp nnimap-split-inbox)
1009 (list nnimap-split-inbox)))
1011 (defun nnimap-split-articles (&optional group server)
1012 (when (nnimap-possibly-change-server server)
1013 (with-current-buffer nnimap-server-buffer
1014 (let (rule inbox removeorig (inboxes (nnimap-split-find-inbox server)))
1015 ;; iterate over inboxes
1016 (while (and (setq inbox (pop inboxes))
1017 (nnimap-possibly-change-group inbox));; SELECT
1018 ;; find split rule for this server / inbox
1019 (when (setq rule (nnimap-split-find-rule server inbox))
1020 ;; iterate over articles
1021 (dolist (article (imap-search nnimap-split-predicate))
1022 (when (nnimap-request-head article)
1023 ;; copy article to right group(s)
1024 (setq removeorig nil)
1025 (dolist (to-group (nnimap-split-to-groups rule))
1026 (if (imap-message-copy (number-to-string article)
1027 to-group nil 'nocopyuid)
1029 (message "IMAP split moved %s:%s:%d to %s" server inbox
1032 ;; Add the group-art list to the history list.
1033 (push (list (cons to-group 0)) nnmail-split-history))
1034 (message "IMAP split failed to move %s:%s:%d to %s" server
1035 inbox article to-group)))
1036 ;; remove article if it was successfully copied somewhere
1038 (imap-message-flags-add (format "%d" article)
1039 "\\Seen \\Deleted")))))
1040 (when (imap-mailbox-select inbox);; just in case
1041 ;; todo: UID EXPUNGE (if available) to remove splitted articles
1042 (imap-mailbox-expunge)
1043 (imap-mailbox-close)))
1046 (deffoo nnimap-request-scan (&optional group server)
1047 (nnimap-split-articles group server))
1049 (deffoo nnimap-request-newgroups (date &optional server)
1050 (when (nnimap-possibly-change-server server)
1051 (with-current-buffer nntp-server-buffer
1052 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s..."
1053 (if (> (length server) 0) " on " "") server)
1055 (nnimap-before-find-minmax-bugworkaround)
1056 (dolist (pattern (nnimap-pattern-to-list-arguments
1057 nnimap-list-pattern))
1058 (dolist (mbx (imap-mailbox-lsub "*" (car pattern) nil
1059 nnimap-server-buffer))
1061 (dolist (mailbox (imap-mailbox-get 'list-flags mbx
1062 nnimap-server-buffer))
1063 (if (string= (downcase mailbox) "\\noselect")
1066 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1068 (insert (format "\"%s\" %d %d y\n"
1069 mbx (or (nth 2 info) 0)
1070 (max 1 (or (nth 1 info) 1)))))))))
1071 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s...done"
1072 (if (> (length server) 0) " on " "") server))
1075 (deffoo nnimap-request-create-group (group &optional server args)
1076 (when (nnimap-possibly-change-server server)
1077 (or (imap-mailbox-status group 'uidvalidity nnimap-server-buffer)
1078 (imap-mailbox-create group nnimap-server-buffer))))
1080 (defun nnimap-time-substract (time1 time2)
1081 "Return TIME for TIME1 - TIME2."
1082 (let* ((ms (- (car time1) (car time2)))
1083 (ls (- (nth 1 time1) (nth 1 time2))))
1085 (list (- ms 1) (+ (expt 2 16) ls))
1088 (defun nnimap-date-days-ago (daysago)
1089 "Return date, in format \"3-Aug-1998\", for DAYSAGO days ago."
1090 (let ((date (format-time-string "%d-%b-%Y"
1091 (nnimap-time-substract
1093 (days-to-time daysago)))))
1094 (if (eq ?0 (string-to-char date))
1098 (defun nnimap-request-expire-articles-progress ()
1099 (gnus-message 5 "nnimap: Marking article %d for deletion..."
1100 imap-current-message))
1102 ;; Notice that we don't actually delete anything, we just mark them deleted.
1103 (deffoo nnimap-request-expire-articles (articles group &optional server force)
1104 (let ((artseq (gnus-compress-sequence articles)))
1105 (when (and artseq (nnimap-possibly-change-group group server))
1106 (with-current-buffer nnimap-server-buffer
1108 (and (imap-message-flags-add
1109 (imap-range-to-message-set artseq) "\\Deleted")
1110 (setq articles nil))
1111 (let ((days (or (and nnmail-expiry-wait-function
1112 (funcall nnmail-expiry-wait-function group))
1113 nnmail-expiry-wait)))
1114 (cond ((eq days 'immediate)
1115 (and (imap-message-flags-add
1116 (imap-range-to-message-set artseq) "\\Deleted")
1117 (setq articles nil)))
1119 (let ((oldarts (imap-search
1120 (format "UID %s NOT SINCE %s"
1121 (imap-range-to-message-set artseq)
1122 (nnimap-date-days-ago days))))
1123 (imap-fetch-data-hook
1124 '(nnimap-request-expire-articles-progress)))
1126 (imap-message-flags-add
1127 (imap-range-to-message-set
1128 (gnus-compress-sequence oldarts))
1130 (setq articles (gnus-set-difference
1131 articles oldarts)))))))))))
1132 ;; return articles not deleted
1135 (deffoo nnimap-request-move-article (article group server
1136 accept-form &optional last)
1137 (when (nnimap-possibly-change-server server)
1139 (let ((buf (get-buffer-create " *nnimap move*"))
1140 (nnimap-current-move-article article)
1141 (nnimap-current-move-group group)
1142 (nnimap-current-move-server nnimap-current-server)
1144 (and (nnimap-request-article article group server)
1147 (buffer-disable-undo (current-buffer))
1148 (insert-buffer-substring nntp-server-buffer)
1149 (setq result (eval accept-form))
1152 (nnimap-request-expire-articles (list article) group server t))
1155 (deffoo nnimap-request-accept-article (group &optional server last)
1156 (when (nnimap-possibly-change-server server)
1159 (if (string= nnimap-current-server nnimap-current-move-server)
1160 ;; moving article within same server, speed it up...
1161 (and (nnimap-possibly-change-group
1162 nnimap-current-move-group)
1163 (imap-message-copy (number-to-string
1164 nnimap-current-move-article)
1165 group 'dontcreate nil
1166 nnimap-server-buffer))
1167 (with-current-buffer (current-buffer)
1168 (goto-char (point-min))
1169 ;; remove any 'From blabla' lines, some IMAP servers
1170 ;; reject the entire message otherwise.
1171 (when (looking-at "^From[^:]")
1172 (kill-region (point) (progn (forward-line) (point))))
1173 ;; turn into rfc822 format (\r\n eol's)
1174 (while (search-forward "\n" nil t)
1175 (replace-match "\r\n")))
1176 ;; this 'or' is for Cyrus server bug
1177 (or (null (imap-current-mailbox nnimap-server-buffer))
1178 (imap-mailbox-unselect nnimap-server-buffer))
1179 (imap-message-append group (current-buffer) nil nil
1180 nnimap-server-buffer)))
1181 (cons group (nth 1 uid))
1182 (nnheader-report 'nnimap (imap-error-text nnimap-server-buffer))))))
1184 (deffoo nnimap-request-delete-group (group force &optional server)
1185 (when (nnimap-possibly-change-server server)
1186 (with-current-buffer nnimap-server-buffer
1188 (or (null (imap-mailbox-status group 'uidvalidity))
1189 (imap-mailbox-delete group))
1193 (deffoo nnimap-request-rename-group (group new-name &optional server)
1194 (when (nnimap-possibly-change-server server)
1195 (imap-mailbox-rename group new-name nnimap-server-buffer)))
1197 (defun nnimap-expunge (mailbox server)
1198 (when (nnimap-possibly-change-group mailbox server)
1199 (imap-mailbox-expunge nnimap-server-buffer)))
1201 (defun nnimap-acl-get (mailbox server)
1202 (when (nnimap-possibly-change-server server)
1203 (and (imap-capability 'ACL nnimap-server-buffer)
1204 (imap-mailbox-acl-get mailbox nnimap-server-buffer))))
1206 (defun nnimap-acl-edit (mailbox method old-acls new-acls)
1207 (when (nnimap-possibly-change-server (cadr method))
1208 (unless (imap-capability 'ACL nnimap-server-buffer)
1209 (error "Your server does not support ACL editing"))
1210 (with-current-buffer nnimap-server-buffer
1211 ;; delete all removed identifiers
1212 (mapcar (lambda (old-acl)
1213 (unless (assoc (car old-acl) new-acls)
1214 (or (imap-mailbox-acl-delete (car old-acl) mailbox)
1215 (error "Can't delete ACL for %s" (car old-acl)))))
1217 ;; set all changed acl's
1218 (mapcar (lambda (new-acl)
1219 (let ((new-rights (cdr new-acl))
1220 (old-rights (cdr (assoc (car new-acl) old-acls))))
1221 (unless (and old-rights new-rights
1222 (string= old-rights new-rights))
1223 (or (imap-mailbox-acl-set (car new-acl) new-rights mailbox)
1224 (error "Can't set ACL for %s to %s" (car new-acl)
1230 ;;; Internal functions
1233 ;; This is confusing.
1235 ;; mark => read, tick, draft, reply etc
1236 ;; flag => "\\Seen", "\\Flagged", "\\Draft", "gnus-expire" etc
1237 ;; predicate => "SEEN", "FLAGGED", "DRAFT", "KEYWORD gnus-expire" etc
1239 ;; Mark should not really contain 'read since it's not a "mark" in the Gnus
1240 ;; world, but we cheat. Mark == gnus-article-mark-lists + '(read . read).
1243 (defconst nnimap-mark-to-predicate-alist
1245 (lambda (pair) ; cdr is the mark
1246 (or (assoc (cdr pair)
1250 (reply . "ANSWERED")))
1252 (format "KEYWORD gnus-%s" (symbol-name (cdr pair))))))
1253 (cons '(read . read) gnus-article-mark-lists)))
1255 (defun nnimap-mark-to-predicate (pred)
1256 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP predicate.
1257 This is a string such as \"SEEN\", \"FLAGGED\", \"KEYWORD gnus-expire\",
1258 to be used within a IMAP SEARCH query."
1259 (cdr (assq pred nnimap-mark-to-predicate-alist)))
1261 (defconst nnimap-mark-to-flag-alist
1264 (or (assoc (cdr pair)
1266 (tick . "\\Flagged")
1268 (reply . "\\Answered")))
1270 (format "gnus-%s" (symbol-name (cdr pair))))))
1271 (cons '(read . read) gnus-article-mark-lists)))
1273 (defun nnimap-mark-to-flag-1 (preds)
1274 (if (and (not (null preds)) (listp preds))
1275 (cons (nnimap-mark-to-flag (car preds))
1276 (nnimap-mark-to-flag (cdr preds)))
1277 (cdr (assoc preds nnimap-mark-to-flag-alist))))
1279 (defun nnimap-mark-to-flag (preds &optional always-list make-string)
1280 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP flag.
1281 This is a string such as \"\\Seen\", \"\\Flagged\", \"gnus-expire\", to
1282 be used in a STORE FLAGS command."
1283 (let ((result (nnimap-mark-to-flag-1 preds)))
1284 (setq result (if (and (or make-string always-list)
1285 (not (listp result)))
1289 (mapconcat (lambda (flag)
1291 (mapconcat 'identity flag " ")
1296 (defun nnimap-mark-permanent-p (mark &optional group)
1297 "Return t iff MARK can be permanently (between IMAP sessions) saved on articles, in GROUP."
1298 (imap-message-flag-permanent-p (nnimap-mark-to-flag mark)))
1300 (defun nnimap-remassoc (key alist)
1301 "Delete by side effect any elements of LIST whose car is `equal' to KEY.
1302 The modified LIST is returned. If the first member
1303 of LIST has a car that is `equal' to KEY, there is no way to remove it
1304 by side effect; therefore, write `(setq foo (remassoc key foo))' to be
1305 sure of changing the value of `foo'."
1307 (if (equal key (caar alist))
1309 (setcdr alist (nnimap-remassoc key (cdr alist)))
1312 (defun nnimap-update-alist-soft (key value alist)
1314 (cons (cons key value) (nnimap-remassoc key alist))
1315 (nnimap-remassoc key alist)))
1319 (buffer-disable-undo (get-buffer-create nnimap-debug))
1320 (mapcar (lambda (f) (trace-function-background f nnimap-debug))
1322 nnimap-possibly-change-server
1323 nnimap-verify-uidvalidity
1324 nnimap-find-minmax-uid
1325 nnimap-before-find-minmax-bugworkaround
1326 nnimap-possibly-change-group
1327 ;;nnimap-replace-whitespace
1328 nnimap-retrieve-headers-progress
1329 nnimap-retrieve-which-headers
1330 nnimap-group-overview-filename
1331 nnimap-retrieve-headers-from-file
1332 nnimap-retrieve-headers-from-server
1333 nnimap-retrieve-headers
1334 nnimap-open-connection
1336 nnimap-server-opened
1338 nnimap-request-close
1339 nnimap-status-message
1341 nnimap-request-article-part
1342 nnimap-request-article
1345 nnimap-request-group
1347 nnimap-pattern-to-list-arguments
1350 nnimap-retrieve-groups
1351 nnimap-request-update-info-internal
1353 nnimap-request-set-mark
1354 nnimap-split-to-groups
1355 nnimap-split-find-rule
1356 nnimap-split-find-inbox
1357 nnimap-split-articles
1359 nnimap-request-newgroups
1360 nnimap-request-create-group
1361 nnimap-time-substract
1362 nnimap-date-days-ago
1363 nnimap-request-expire-articles-progress
1364 nnimap-request-expire-articles
1365 nnimap-request-move-article
1366 nnimap-request-accept-article
1367 nnimap-request-delete-group
1368 nnimap-request-rename-group
1369 gnus-group-nnimap-expunge
1370 gnus-group-nnimap-edit-acl
1371 gnus-group-nnimap-edit-acl-done
1372 nnimap-group-mode-hook
1373 nnimap-mark-to-predicate
1374 nnimap-mark-to-flag-1
1376 nnimap-mark-permanent-p
1378 nnimap-update-alist-soft
1383 ;;; nnimap.el ends here