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
73 (defconst nnimap-version "nnimap 1.0")
76 "Reading IMAP mail with Gnus."
79 (defvoo nnimap-address nil
80 "Address of physical IMAP server. If nil, use the virtual server's name.")
82 (defvoo nnimap-server-port nil
83 "Port number on physical IMAP server.
84 If nil, defaults to 993 for SSL connections and 143 otherwise.")
86 ;; Splitting variables
88 (defcustom nnimap-split-crosspost t
89 "If non-nil, do crossposting if several split methods match the mail.
90 If nil, the first match found will be used."
94 (defcustom nnimap-split-inbox nil
95 "Name of mailbox to split mail from.
97 Mail is read from this mailbox and split according to rules in
100 This can be a string or a list of strings."
102 :type '(choice (string)
105 (define-widget 'nnimap-strict-function 'function
106 "This widget only matches values that are functionp.
108 Warning: This means that a value that is the symbol of a not yet
109 loaded function will not match. Use with care."
110 :match 'nnimap-strict-function-match)
112 (defun nnimap-strict-function-match (widget value)
113 "Ignoring WIDGET, match if VALUE is a function."
116 (defcustom nnimap-split-rule nil
117 "Mail will be split according to theese rules.
119 Mail is read from mailbox(es) specified in `nnimap-split-inbox'.
121 If you'd like, for instance, one mail group for mail from the
122 \"gnus-imap\" mailing list, one group for junk mail and leave
123 everything else in the incoming mailbox, you could do something like
126 \(setq nnimap-split-rule '((\"INBOX.gnus-imap\" \"From:.*gnus-imap\")
127 (\"INBOX.junk\" \"Subject:.*buy\")))
129 As you can see, `nnimap-split-rule' is a list of lists, where the first
130 element in each \"rule\" is the name of the IMAP mailbox, and the
131 second is a regexp that nnimap will try to match on the header to find
134 The second element can also be a function. In that case, it will be
135 called narrowed to the headers with the first element of the rule as
136 the argument. It should return a non-nil value if it thinks that the
137 mail belongs in that group.
139 This variable can also have a function as its value, the function will
140 be called with the headers narrowed and should return a group where it
141 thinks the article should be splitted to. See `nnimap-split-fancy'.
143 To allow for different split rules on different virtual servers, and
144 even different split rules in different inboxes on the same server,
145 the syntax of this variable have been extended along the lines of:
147 \(setq nnimap-split-rule
148 '((\"my1server\" (\".*\" ((\"ding\" \"ding@gnus.org\")
149 (\"junk\" \"From:.*Simon\")))
150 (\"my2server\" (\"INBOX\" nnimap-split-fancy))
151 (\"my[34]server\" (\".*\" ((\"private\" \"To:.*Simon\")
152 (\"junk\" my-junk-func)))))
154 The virtual server name is in fact a regexp, so that the same rules
155 may apply to several servers. In the example, the servers
156 \"my3server\" and \"my4server\" both use the same rules. Similarly,
157 the inbox string is also a regexp. The actual splitting rules are as
158 before, either a function, or a list with group/regexp or
159 group/function elements."
161 :type '(choice :tag "Rule type"
162 (repeat :menu-tag "Single-server"
163 :tag "Single-server list"
164 (list (string :tag "Mailbox")
165 (choice :tag "Predicate"
166 (regexp :tag "A regexp")
167 (nnimap-strict-function :tag "A function"))))
168 (choice :menu-tag "A function"
170 (function-item nnimap-split-fancy)
171 (function-item nnmail-split-fancy)
172 (nnimap-strict-function :tag "User-defined function"))
173 (repeat :menu-tag "Multi-server (extended)"
174 :tag "Multi-server list"
175 (list (regexp :tag "Server regexp")
176 (list (regexp :tag "Incoming Mailbox regexp")
177 (repeat :tag "Rules for matching server(s) and mailbox(es)"
178 (list (string :tag "Destination mailbox")
179 (choice :tag "Predicate"
180 (regexp :tag "A Regexp")
181 (nnimap-strict-function :tag "A Function")))))))))
183 (defcustom nnimap-split-predicate "UNSEEN UNDELETED"
184 "The predicate used to find articles to split.
185 If you use another IMAP client to peek on articles but always would
186 like nnimap to split them once it's started, you could change this to
187 \"UNDELETED\". Other available predicates are available in
188 RFC2060 section 6.4.4."
192 (defcustom nnimap-split-fancy nil
193 "Like the variable `nnmail-split-fancy', which see."
197 ;; Performance / bug workaround variables
199 (defcustom nnimap-close-asynchronous t
200 "Close mailboxes asynchronously in `nnimap-close-group'.
201 This means that errors cought by nnimap when closing the mailbox will
202 not prevent Gnus from updating the group status, which may be harmful.
203 However, it increases speed."
207 (defcustom nnimap-dont-close t
208 "Never close mailboxes.
209 This increases the speed of closing mailboxes (quiting group) but may
210 decrease the speed of selecting another mailbox later. Re-selecting
211 the same mailbox will be faster though."
215 (defcustom nnimap-retrieve-groups-asynchronous t
216 "Send asynchronous STATUS commands for each mailbox before checking mail.
217 If you have mailboxes that rarely receives mail, this speeds up new
218 mail checking. It works by first sending STATUS commands for each
219 mailbox, and then only checking groups which has a modified UIDNEXT
220 more carefully for new mail.
222 In summary, the default is O((1-p)*k+p*n) and changing it to nil makes
223 it O(n). If p is small, then the default is probably faster."
227 (defvoo nnimap-need-unselect-to-notice-new-mail nil
228 "Unselect mailboxes before looking for new mail in them.
229 Some servers seem to need this under some circumstances.")
231 ;; Authorization / Privacy variables
233 (defvoo nnimap-auth-method nil
236 (defvoo nnimap-stream nil
237 "How nnimap will connect to the server.
239 The default, nil, will try to use the \"best\" method the server can
244 1) you want to connect with SSL. The SSL integration with IMAP is
245 brain-dead so you'll have to tell it specifically.
247 2) your server is more capable than your environment -- i.e. your
248 server accept Kerberos login's but you haven't installed the
249 `imtest' program or your machine isn't configured for Kerberos.
251 Possible choices: kerberos4, ssl, network")
253 (defvoo nnimap-authenticator nil
254 "How nnimap authenticate itself to the server.
256 The default, nil, will try to use the \"best\" method the server can
259 There is only one reason for fiddling with this variable, and that is
260 if your server is more capable than your environment -- i.e. you
261 connect to a server that accept Kerberos login's but you haven't
262 installed the `imtest' program or your machine isn't configured for
265 Possible choices: kerberos4, cram-md5, login, anonymous.")
267 (defvoo nnimap-directory (nnheader-concat gnus-directory "overview/")
268 "Directory to keep NOV cache files for nnimap groups.
269 See also `nnimap-nov-file-name'.")
271 (defvoo nnimap-nov-file-name "nnimap."
272 "NOV cache base filename.
273 The group name and `nnimap-nov-file-name-suffix' will be appended. A
274 typical complete file name would be
275 ~/News/overview/nnimap.pdc.INBOX.ding.nov, or
276 ~/News/overview/nnimap/pdc/INBOX/ding/nov if
277 `nnmail-use-long-file-names' is nil")
279 (defvoo nnimap-nov-file-name-suffix ".novcache"
280 "Suffix for NOV cache base filename.")
282 (defvoo nnimap-nov-is-evil nil
283 "If non-nil, nnimap will never generate or use a local nov database for this backend.
284 Using nov databases will speed up header fetching considerably.
285 Unlike other backends, you do not need to take special care if you
286 flip this variable.")
288 (defvoo nnimap-expunge-on-close 'always ; 'ask, 'never
289 "Whether to expunge a group when it is closed.
290 When a IMAP group with articles marked for deletion is closed, this
291 variable determine if nnimap should actually remove the articles or
294 If always, nnimap always perform a expunge when closing the group.
295 If never, nnimap never expunges articles marked for deletion.
296 If ask, nnimap will ask you if you wish to expunge marked articles.
298 When setting this variable to `never', you can only expunge articles
299 by using `G x' (gnus-group-nnimap-expunge) from the Group buffer.")
301 (defvoo nnimap-list-pattern "*"
302 "A string LIMIT or list of strings with mailbox wildcards used to limit available groups.
303 See below for available wildcards.
305 The LIMIT string can be a cons cell (REFERENCE . LIMIT), where
306 REFERENCE will be passed as the first parameter to LIST/LSUB. The
307 semantics of this are server specific, on the University of Washington
308 server you can specify a directory.
311 '(\"INBOX\" \"mail/*\" (\"~friend/mail/\" . \"list/*\"))
313 There are two wildcards * and %. * matches everything, % matches
314 everything in the current hierarchy.")
316 (defvoo nnimap-news-groups nil
317 "IMAP support a news-like mode, also known as bulletin board mode,
318 where replies is sent via IMAP instead of SMTP.
320 This variable should contain a regexp matching groups where you wish
321 replies to be stored to the mailbox directly.
324 '(\"^[^I][^N][^B][^O][^X].*$\")
326 This will match all groups not beginning with \"INBOX\".
328 Note that there is nothing technically different between mail-like and
329 news-like mailboxes. If you wish to have a group with todo items or
330 similar which you wouldn't want to set up a mailing list for, you can
331 use this to make replies go directly to the group.")
333 (defvoo nnimap-expunge-search-string "UID %s NOT SINCE %s"
334 "IMAP search command to use for articles that are to be expired.
335 The first %s is replaced by a UID set of articles to search on,
336 and the second %s is replaced by a date criterium.
338 One useful (and perhaps the only useful) value to change this to would
339 be `UID %s NOT SENTSINCE %s' to make nnimap use the Date: header
340 instead of the internal date of messages. See section 6.4.4 of RFC
341 2060 for more information on valid strings.")
343 (defvoo nnimap-importantize-dormant t
344 "If non-nil, mark \"dormant\" articles as \"ticked\" for other IMAP clients.
345 Note that within Gnus, dormant articles will still (only) be
346 marked as ticked. This is to make \"dormant\" articles stand out,
347 just like \"ticked\" articles, in other IMAP clients.")
349 (defvoo nnimap-server-address nil
350 "Obsolete. Use `nnimap-address'.")
352 (defcustom nnimap-authinfo-file "~/.authinfo"
353 "Authorization information for IMAP servers. In .netrc format."
356 (repeat :tag "Entries"
359 :value ("" ("login" . "") ("password" . ""))
363 (const :format "" "login")
364 (string :format "Login: %v"))
366 (const :format "" "password")
367 (string :format "Password: %v")))))))
369 (defcustom nnimap-prune-cache t
370 "If non-nil, nnimap check whether articles still exist on server before using data stored in NOV cache."
373 (defvar nnimap-request-list-method 'imap-mailbox-list
374 "Method to use to request a list of all folders from the server.
375 If this is 'imap-mailbox-lsub, then use a server-side subscription list to
376 restrict visible folders.")
378 ;; Internal variables:
380 (defvoo nnimap-mailbox-info (gnus-make-hashtable 997))
381 (defvar nnimap-debug nil
382 "Name of buffer to record debugging info.
383 For example: (setq nnimap-debug \"*nnimap-debug*\")")
384 (defvar nnimap-current-move-server nil)
385 (defvar nnimap-current-move-group nil)
386 (defvar nnimap-current-move-article nil)
387 (defvar nnimap-length)
388 (defvar nnimap-progress-chars '(?| ?/ ?- ?\\))
389 (defvar nnimap-progress-how-often 20)
390 (defvar nnimap-counter)
391 (defvar nnimap-callback-callback-function nil
392 "Gnus callback the nnimap asynchronous callback should call.")
393 (defvar nnimap-callback-buffer nil
394 "Which buffer the asynchronous article prefetch callback should work in.")
395 (defvar nnimap-server-buffer-alist nil) ;; Map server name to buffers.
396 (defvar nnimap-current-server nil) ;; Current server
397 (defvar nnimap-server-buffer nil) ;; Current servers' buffer
401 (nnoo-define-basics nnimap)
403 ;; Utility functions:
405 (defsubst nnimap-get-server-buffer (server)
406 "Return buffer for SERVER, if nil use current server."
407 (cadr (assoc (or server nnimap-current-server) nnimap-server-buffer-alist)))
409 (defun nnimap-possibly-change-server (server)
410 "Return buffer for SERVER, changing the current server as a side-effect.
411 If SERVER is nil, uses the current server."
412 (setq nnimap-current-server (or server nnimap-current-server)
413 nnimap-server-buffer (nnimap-get-server-buffer nnimap-current-server)))
415 (defun nnimap-verify-uidvalidity (group server)
416 "Verify stored uidvalidity match current one in GROUP on SERVER."
417 (let* ((gnusgroup (gnus-group-prefixed-name
418 group (gnus-server-to-method
419 (format "nnimap:%s" server))))
420 (new-uidvalidity (imap-mailbox-get 'uidvalidity))
421 (old-uidvalidity (gnus-group-get-parameter gnusgroup 'uidvalidity))
422 (dir (file-name-as-directory (expand-file-name nnimap-directory)))
423 (nameuid (nnheader-translate-file-chars
424 (concat nnimap-nov-file-name
425 (if (equal server "")
427 server) "." group "." old-uidvalidity
428 nnimap-nov-file-name-suffix) t))
429 (file (if (or nnmail-use-long-file-names
430 (file-exists-p (expand-file-name nameuid dir)))
431 (expand-file-name nameuid dir)
433 (mm-encode-coding-string
434 (nnheader-replace-chars-in-string nameuid ?. ?/)
435 nnmail-pathname-coding-system)
438 (if (not (equal old-uidvalidity new-uidvalidity))
440 (gnus-delete-file file)
441 (gnus-group-set-parameter gnusgroup 'uidvalidity new-uidvalidity)
443 (gnus-group-add-parameter gnusgroup (cons 'uidvalidity new-uidvalidity))
446 (defun nnimap-before-find-minmax-bugworkaround ()
447 "Function called before iterating through mailboxes with
448 `nnimap-find-minmax-uid'."
449 (when nnimap-need-unselect-to-notice-new-mail
450 ;; XXX this is for UoW imapd problem, it doesn't notice new mail in
451 ;; currently selected mailbox without a re-select/examine.
452 (or (null (imap-current-mailbox nnimap-server-buffer))
453 (imap-mailbox-unselect nnimap-server-buffer))))
455 (defun nnimap-find-minmax-uid (group &optional examine)
456 "Find lowest and highest active article nummber in GROUP.
457 If EXAMINE is non-nil the group is selected read-only."
458 (with-current-buffer nnimap-server-buffer
459 (when (or (string= group (imap-current-mailbox))
460 (imap-mailbox-select group examine))
462 (when (> (imap-mailbox-get 'exists) 0)
463 (imap-fetch "1,*" "UID" nil 'nouidfetch)
464 (imap-message-map (lambda (uid Uid)
465 (setq minuid (if minuid (min minuid uid) uid)
466 maxuid (if maxuid (max maxuid uid) uid)))
468 (list (imap-mailbox-get 'exists) minuid maxuid)))))
470 (defun nnimap-possibly-change-group (group &optional server)
471 "Make GROUP the current group, and SERVER the current server."
472 (when (nnimap-possibly-change-server server)
473 (with-current-buffer nnimap-server-buffer
474 (if (or (null group) (imap-current-mailbox-p group))
476 (if (imap-mailbox-select group)
477 (if (or (nnimap-verify-uidvalidity
478 group (or server nnimap-current-server))
479 (zerop (imap-mailbox-get 'exists group))
480 t ;; for OGnus to see if ignoring uidvalidity
481 ;; changes has any bad effects.
484 "nnimap: Group %s is not uidvalid. Continue? " group)))
486 (imap-mailbox-unselect)
487 (error "nnimap: Group %s is not uid-valid" group))
488 (nnheader-report 'nnimap (imap-error-text)))))))
490 (defun nnimap-replace-whitespace (string)
491 "Return STRING with all whitespace replaced with space."
493 (while (string-match "[\r\n\t]+" string)
494 (setq string (replace-match " " t t string)))
497 ;; Required backend functions
499 (defun nnimap-retrieve-headers-progress ()
500 "Hook to insert NOV line for current article into `nntp-server-buffer'."
501 (and (numberp nnmail-large-newsgroup)
502 (zerop (% (incf nnimap-counter) nnimap-progress-how-often))
503 (> nnimap-length nnmail-large-newsgroup)
504 (nnheader-message 6 "nnimap: Retrieving headers... %c"
505 (nth (/ (% nnimap-counter
506 (* (length nnimap-progress-chars)
507 nnimap-progress-how-often))
508 nnimap-progress-how-often)
509 nnimap-progress-chars)))
510 (with-current-buffer nntp-server-buffer
511 (let (headers lines chars uid mbx)
512 (with-current-buffer nnimap-server-buffer
513 (setq uid imap-current-message
514 mbx imap-current-mailbox
515 headers (nnimap-demule
516 (if (imap-capability 'IMAP4rev1)
517 ;; xxx don't just use car? alist doesn't contain
518 ;; anything else now, but it might...
519 (nth 2 (car (imap-message-get uid 'BODYDETAIL)))
520 (imap-message-get uid 'RFC822.HEADER)))
521 lines (imap-body-lines (imap-message-body imap-current-message))
522 chars (imap-message-get imap-current-message 'RFC822.SIZE)))
525 (buffer-disable-undo)
527 (nnheader-ms-strip-cr)
528 (nnheader-fold-continuation-lines)
529 (subst-char-in-region (point-min) (point-max) ?\t ? )
530 (let ((head (nnheader-parse-head 'naked)))
531 (mail-header-set-number head uid)
532 (mail-header-set-chars head chars)
533 (mail-header-set-lines head lines)
534 (mail-header-set-xref
535 head (format "%s %s:%d" (system-name) mbx uid))
538 (defun nnimap-retrieve-which-headers (articles fetch-old)
539 "Get a range of articles to fetch based on ARTICLES and FETCH-OLD."
540 (with-current-buffer nnimap-server-buffer
541 (if (numberp (car-safe articles))
544 (imap-range-to-message-set
545 (gnus-compress-sequence
546 (append (gnus-uncompress-sequence
548 (cons (if (numberp fetch-old)
549 (max 1 (- (car articles) fetch-old))
551 (1- (car articles)))))
553 (mapcar (lambda (msgid)
555 (format "HEADER Message-Id \"%s\"" msgid)))
558 (defun nnimap-group-overview-filename (group server)
559 "Make pathname for GROUP on SERVER."
560 (let* ((dir (file-name-as-directory (expand-file-name nnimap-directory)))
561 (uidvalidity (gnus-group-get-parameter
562 (gnus-group-prefixed-name
563 group (gnus-server-to-method
564 (format "nnimap:%s" server)))
566 (name (nnheader-translate-file-chars
567 (concat nnimap-nov-file-name
568 (if (equal server "")
570 server) "." group nnimap-nov-file-name-suffix) t))
571 (nameuid (nnheader-translate-file-chars
572 (concat nnimap-nov-file-name
573 (if (equal server "")
575 server) "." group "." uidvalidity
576 nnimap-nov-file-name-suffix) t))
577 (oldfile (if (or nnmail-use-long-file-names
578 (file-exists-p (expand-file-name name dir)))
579 (expand-file-name name dir)
581 (mm-encode-coding-string
582 (nnheader-replace-chars-in-string name ?. ?/)
583 nnmail-pathname-coding-system)
585 (newfile (if (or nnmail-use-long-file-names
586 (file-exists-p (expand-file-name nameuid dir)))
587 (expand-file-name nameuid dir)
589 (mm-encode-coding-string
590 (nnheader-replace-chars-in-string nameuid ?. ?/)
591 nnmail-pathname-coding-system)
593 (when (and (file-exists-p oldfile) (not (file-exists-p newfile)))
594 (message "nnimap: Upgrading novcache filename...")
596 (gnus-make-directory (file-name-directory newfile))
597 (unless (ignore-errors (rename-file oldfile newfile) t)
598 (if (ignore-errors (copy-file oldfile newfile) t)
599 (delete-file oldfile)
600 (error "Can't rename `%s' to `%s'" oldfile newfile))))
603 (defun nnimap-retrieve-headers-from-file (group server)
604 (with-current-buffer nntp-server-buffer
605 (let ((nov (nnimap-group-overview-filename group server)))
606 (when (file-exists-p nov)
607 (mm-insert-file-contents nov)
608 (set-buffer-modified-p nil)
609 (let ((min (ignore-errors (goto-char (point-min))
610 (read (current-buffer))))
611 (max (ignore-errors (goto-char (point-max))
613 (read (current-buffer)))))
614 (if (and (numberp min) (numberp max))
616 ;; junk, remove it, it's saved later
620 (defun nnimap-retrieve-headers-from-server (articles group server)
621 (with-current-buffer nnimap-server-buffer
622 (let ((imap-fetch-data-hook '(nnimap-retrieve-headers-progress))
623 (nnimap-length (gnus-range-length articles))
625 (imap-fetch (imap-range-to-message-set articles)
626 (concat "(UID RFC822.SIZE BODY "
628 (append '(Subject From Date Message-Id
629 References In-Reply-To Xref)
631 nnmail-extra-headers))))
632 (if (imap-capability 'IMAP4rev1)
633 (format "BODY.PEEK[HEADER.FIELDS %s])" headers)
634 (format "RFC822.HEADER.LINES %s)" headers)))))
635 (and (numberp nnmail-large-newsgroup)
636 (> nnimap-length nnmail-large-newsgroup)
637 (nnheader-message 6 "nnimap: Retrieving headers...done")))))
639 (defun nnimap-dont-use-nov-p (group server)
640 (or gnus-nov-is-evil nnimap-nov-is-evil
641 (unless (and (gnus-make-directory
643 (nnimap-group-overview-filename group server)))
645 (nnimap-group-overview-filename group server)))
646 (message "nnimap: Nov cache not writable, %s"
647 (nnimap-group-overview-filename group server)))))
649 (deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
650 (when (nnimap-possibly-change-group group server)
651 (with-current-buffer nntp-server-buffer
653 (if (nnimap-dont-use-nov-p group server)
654 (nnimap-retrieve-headers-from-server
655 (gnus-compress-sequence articles) group server)
656 (let (uids cached low high)
657 (when (setq uids (nnimap-retrieve-which-headers articles fetch-old)
659 high (car (last uids)))
660 (if (setq cached (nnimap-retrieve-headers-from-file group server))
662 ;; fetch articles with uids before cache block
663 (when (< low (car cached))
664 (goto-char (point-min))
665 (nnimap-retrieve-headers-from-server
666 (cons low (1- (car cached))) group server))
667 ;; fetch articles with uids after cache block
668 (when (> high (cdr cached))
669 (goto-char (point-max))
670 (nnimap-retrieve-headers-from-server
671 (cons (1+ (cdr cached)) high) group server))
672 (when nnimap-prune-cache
673 ;; remove nov's for articles which has expired on server
674 (goto-char (point-min))
675 (dolist (uid (gnus-set-difference articles uids))
676 (when (re-search-forward (format "^%d\t" uid) nil t)
677 (gnus-delete-line)))))
678 ;; nothing cached, fetch whole range from server
679 (nnimap-retrieve-headers-from-server
680 (cons low high) group server))
681 (when (buffer-modified-p)
683 (point-min) (point-max)
684 (nnimap-group-overview-filename group server) nil 'nomesg))
685 (nnheader-nov-delete-outside-range low high))))
688 (defun nnimap-open-connection (server)
689 (if (not (imap-open nnimap-address nnimap-server-port nnimap-stream
690 nnimap-authenticator nnimap-server-buffer))
691 (nnheader-report 'nnimap "Can't open connection to server %s" server)
692 (unless (or (imap-capability 'IMAP4 nnimap-server-buffer)
693 (imap-capability 'IMAP4rev1 nnimap-server-buffer))
694 (imap-close nnimap-server-buffer)
695 (nnheader-report 'nnimap "Server %s is not IMAP4 compliant" server))
696 (let* ((list (gnus-parse-netrc nnimap-authinfo-file))
697 (port (if nnimap-server-port
698 (int-to-string nnimap-server-port)
700 (alist (gnus-netrc-machine list (or nnimap-server-address
701 nnimap-address server)
703 (user (gnus-netrc-get alist "login"))
704 (passwd (gnus-netrc-get alist "password")))
705 (if (imap-authenticate user passwd nnimap-server-buffer)
707 (push (list server nnimap-server-buffer)
708 nnimap-server-buffer-alist)
709 (nnimap-possibly-change-server server))
710 (imap-close nnimap-server-buffer)
711 (kill-buffer nnimap-server-buffer)
712 (nnheader-report 'nnimap "Could not authenticate to %s" server)))))
714 (deffoo nnimap-open-server (server &optional defs)
715 (nnheader-init-server-buffer)
716 (if (nnimap-server-opened server)
718 (unless (assq 'nnimap-server-buffer defs)
719 (push (list 'nnimap-server-buffer (concat " *nnimap* " server)) defs))
720 ;; translate `nnimap-server-address' to `nnimap-address' in defs
721 ;; for people that configured nnimap with a very old version
722 (unless (assq 'nnimap-address defs)
723 (if (assq 'nnimap-server-address defs)
724 (push (list 'nnimap-address
725 (cadr (assq 'nnimap-server-address defs))) defs)
726 (push (list 'nnimap-address server) defs)))
727 (nnoo-change-server 'nnimap server defs)
728 (or nnimap-server-buffer
729 (setq nnimap-server-buffer (cadr (assq 'nnimap-server-buffer defs))))
730 (with-current-buffer (get-buffer-create nnimap-server-buffer)
731 (nnoo-change-server 'nnimap server defs))
732 (or (and nnimap-server-buffer
733 (imap-opened nnimap-server-buffer))
734 (nnimap-open-connection server))))
736 (deffoo nnimap-server-opened (&optional server)
737 "Whether SERVER is opened.
738 If SERVER is the current virtual server, and the connection to the
739 physical server is alive, this function return a non-nil value. If
740 SERVER is nil, it is treated as the current server."
741 ;; clean up autologouts??
742 (and (or server nnimap-current-server)
743 (nnoo-server-opened 'nnimap (or server nnimap-current-server))
744 (imap-opened (nnimap-get-server-buffer server))))
746 (deffoo nnimap-close-server (&optional server)
747 "Close connection to server and free all resources connected to it.
748 Return nil if the server couldn't be closed for some reason."
749 (let ((server (or server nnimap-current-server)))
750 (when (or (nnimap-server-opened server)
751 (imap-opened (nnimap-get-server-buffer server)))
752 (imap-close (nnimap-get-server-buffer server))
753 (kill-buffer (nnimap-get-server-buffer server))
754 (setq nnimap-server-buffer nil
755 nnimap-current-server nil
756 nnimap-server-buffer-alist
757 (delq server nnimap-server-buffer-alist)))
758 (nnoo-close-server 'nnimap server)))
760 (deffoo nnimap-request-close ()
761 "Close connection to all servers and free all resources that the backend have reserved.
762 All buffers that have been created by that
763 backend should be killed. (Not the nntp-server-buffer, though.) This
764 function is generally only called when Gnus is shutting down."
765 (mapcar (lambda (server) (nnimap-close-server (car server)))
766 nnimap-server-buffer-alist)
767 (setq nnimap-server-buffer-alist nil))
769 (deffoo nnimap-status-message (&optional server)
770 "This function returns the last error message from server."
771 (when (nnimap-possibly-change-server server)
772 (nnoo-status-message 'nnimap server)))
774 (defun nnimap-demule (string)
775 (funcall (if (and (fboundp 'string-as-multibyte)
776 (subrp (symbol-function 'string-as-multibyte)))
781 (defun nnimap-callback ()
782 (remove-hook 'imap-fetch-data-hook 'nnimap-callback)
783 (with-current-buffer nnimap-callback-buffer
785 (with-current-buffer nnimap-server-buffer
787 (if (imap-capability 'IMAP4rev1)
788 ;; xxx don't just use car? alist doesn't contain
789 ;; anything else now, but it might...
790 (nth 2 (car (imap-message-get (imap-current-message) 'BODYDETAIL)))
791 (imap-message-get (imap-current-message) 'RFC822)))))
792 (nnheader-ms-strip-cr)
793 (funcall nnimap-callback-callback-function t)))
795 (defun nnimap-request-article-part (article part prop &optional
796 group server to-buffer detail)
797 (when (nnimap-possibly-change-group group server)
798 (let ((article (if (stringp article)
799 (car-safe (imap-search
800 (format "HEADER Message-Id \"%s\"" article)
801 nnimap-server-buffer))
804 (gnus-message 10 "nnimap: Fetching (part of) article %d..." article)
805 (if (not nnheader-callback-function)
806 (with-current-buffer (or to-buffer nntp-server-buffer)
808 (let ((data (imap-fetch article part prop nil
809 nnimap-server-buffer)))
810 (insert (nnimap-demule (if detail
813 (nnheader-ms-strip-cr)
814 (gnus-message 10 "nnimap: Fetching (part of) article %d...done"
817 (nnheader-report 'nnimap "No such article: %s"
818 (imap-error-text nnimap-server-buffer))
819 (cons group article)))
820 (add-hook 'imap-fetch-data-hook 'nnimap-callback)
821 (setq nnimap-callback-callback-function nnheader-callback-function
822 nnimap-callback-buffer nntp-server-buffer)
823 (imap-fetch-asynch article part nil nnimap-server-buffer)
824 (cons group article))))))
826 (deffoo nnimap-asynchronous-p ()
829 (deffoo nnimap-request-article (article &optional group server to-buffer)
830 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
831 (nnimap-request-article-part
832 article "BODY.PEEK[]" 'BODYDETAIL group server to-buffer 'detail)
833 (nnimap-request-article-part
834 article "RFC822.PEEK" 'RFC822 group server to-buffer)))
836 (deffoo nnimap-request-head (article &optional group server to-buffer)
837 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
838 (nnimap-request-article-part
839 article "BODY.PEEK[HEADER]" 'BODYDETAIL group server to-buffer 'detail)
840 (nnimap-request-article-part
841 article "RFC822.HEADER" 'RFC822.HEADER group server to-buffer)))
843 (deffoo nnimap-request-body (article &optional group server to-buffer)
844 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
845 (nnimap-request-article-part
846 article "BODY.PEEK[TEXT]" 'BODYDETAIL group server to-buffer 'detail)
847 (nnimap-request-article-part
848 article "RFC822.TEXT.PEEK" 'RFC822.TEXT group server to-buffer)))
850 (deffoo nnimap-request-group (group &optional server fast)
851 (nnimap-request-update-info-internal
853 (gnus-get-info (gnus-group-prefixed-name
854 group (gnus-server-to-method (format "nnimap:%s" server))))
856 (when (nnimap-possibly-change-group group server)
857 (nnimap-before-find-minmax-bugworkaround)
860 ((null (setq info (nnimap-find-minmax-uid group t)))
861 (nnheader-report 'nnimap "Could not get active info for %s"
864 (nnheader-insert "211 %d %d %d %s\n" (or (nth 0 info) 0)
865 (max 1 (or (nth 1 info) 1))
866 (or (nth 2 info) 0) group)
867 (nnheader-report 'nnimap "Group %s selected" group)
870 (defun nnimap-close-group (group &optional server)
871 (with-current-buffer nnimap-server-buffer
872 (when (and (imap-opened)
873 (nnimap-possibly-change-group group server))
874 (case nnimap-expunge-on-close
876 (imap-mailbox-expunge nnimap-close-asynchronous)
877 (unless nnimap-dont-close
878 (imap-mailbox-close nnimap-close-asynchronous))))
879 (ask (if (and (imap-search "DELETED")
880 (gnus-y-or-n-p (format "Expunge articles in group `%s'? "
881 imap-current-mailbox)))
883 (imap-mailbox-expunge nnimap-close-asynchronous)
884 (unless nnimap-dont-close
885 (imap-mailbox-close nnimap-close-asynchronous)))
886 (imap-mailbox-unselect)))
887 (t (imap-mailbox-unselect)))
888 (not imap-current-mailbox))))
890 (defun nnimap-pattern-to-list-arguments (pattern)
892 (cons (car-safe p) (or (cdr-safe p) p)))
893 (if (and (listp pattern)
894 (listp (cdr pattern)))
898 (deffoo nnimap-request-list (&optional server)
899 (when (nnimap-possibly-change-server server)
900 (with-current-buffer nntp-server-buffer
902 (gnus-message 5 "nnimap: Generating active list%s..."
903 (if (> (length server) 0) (concat " for " server) ""))
904 (nnimap-before-find-minmax-bugworkaround)
905 (with-current-buffer nnimap-server-buffer
906 (dolist (pattern (nnimap-pattern-to-list-arguments nnimap-list-pattern))
907 (dolist (mbx (funcall nnimap-request-list-method
908 (cdr pattern) (car pattern)))
909 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags mbx))
910 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
912 (with-current-buffer nntp-server-buffer
913 (insert (format "\"%s\" %d %d y\n"
914 mbx (or (nth 2 info) 0)
915 (max 1 (or (nth 1 info) 1)))))))))))
916 (gnus-message 5 "nnimap: Generating active list%s...done"
917 (if (> (length server) 0) (concat " for " server) ""))
920 (deffoo nnimap-request-post (&optional server)
922 (dolist (mbx (message-unquote-tokens
923 (message-tokenize-header
924 (message-fetch-field "Newsgroups") ", ")) success)
925 (let ((to-newsgroup (gnus-group-prefixed-name mbx gnus-command-method)))
926 (or (gnus-active to-newsgroup)
927 (gnus-activate-group to-newsgroup)
928 (if (gnus-y-or-n-p (format "No such group: %s. Create it? "
930 (or (and (gnus-request-create-group
931 to-newsgroup gnus-command-method)
932 (gnus-activate-group to-newsgroup nil nil
933 gnus-command-method))
934 (error "Couldn't create group %s" to-newsgroup)))
935 (error "No such group: %s" to-newsgroup))
936 (unless (nnimap-request-accept-article mbx (nth 1 gnus-command-method))
937 (setq success nil))))))
939 ;; Optional backend functions
941 (deffoo nnimap-retrieve-groups (groups &optional server)
942 (when (nnimap-possibly-change-server server)
943 (gnus-message 5 "nnimap: Checking mailboxes...")
944 (with-current-buffer nntp-server-buffer
946 (nnimap-before-find-minmax-bugworkaround)
947 (let (asyncgroups slowgroups)
948 (if (null nnimap-retrieve-groups-asynchronous)
949 (setq slowgroups groups)
950 (dolist (group groups)
951 (gnus-message 7 "nnimap: Checking mailbox %s" group)
952 (add-to-list (if (gnus-gethash-safe group nnimap-mailbox-info)
955 (list group (imap-mailbox-status-asynch
956 group 'uidnext nnimap-server-buffer))))
957 (dolist (asyncgroup asyncgroups)
958 (let ((group (nth 0 asyncgroup))
959 (tag (nth 1 asyncgroup))
961 (when (imap-ok-p (imap-wait-for-tag tag nnimap-server-buffer))
962 (if (< (car (gnus-gethash group nnimap-mailbox-info))
963 (imap-mailbox-get 'uidnext group nnimap-server-buffer))
964 (push (list group) slowgroups)
965 (insert (cdr (gnus-gethash group nnimap-mailbox-info))))))))
966 (dolist (group slowgroups)
967 (if nnimap-retrieve-groups-asynchronous
968 (setq group (car group)))
969 (gnus-message 7 "nnimap: Rechecking mailbox %s" group)
970 (imap-mailbox-put 'uidnext nil group nnimap-server-buffer)
971 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags group
972 nnimap-server-buffer))
973 (let* ((info (nnimap-find-minmax-uid group 'examine))
974 (str (format "\"%s\" %d %d y\n" group
976 (max 1 (or (nth 1 info) 1)))))
977 (when (> (or (imap-mailbox-get 'recent group
978 nnimap-server-buffer) 0)
980 (push (list (cons group 0)) nnmail-split-history))
982 (when nnimap-retrieve-groups-asynchronous
985 (cons (or (imap-mailbox-get
986 'uidnext group nnimap-server-buffer)
988 group 'uidnext nnimap-server-buffer))
990 nnimap-mailbox-info)))))))
991 (gnus-message 5 "nnimap: Checking mailboxes...done")
994 (deffoo nnimap-request-update-info-internal (group info &optional server)
995 (when (nnimap-possibly-change-group group server)
996 (when info ;; xxx what does this mean? should we create a info?
997 (with-current-buffer nnimap-server-buffer
998 (gnus-message 5 "nnimap: Updating info for %s..."
999 (gnus-info-group info))
1001 (when (nnimap-mark-permanent-p 'read)
1003 ;; read info could contain articles marked unread by other
1004 ;; imap clients! we correct this
1005 (setq seen (gnus-uncompress-range (gnus-info-read info))
1006 unseen (imap-search "UNSEEN UNDELETED")
1007 seen (gnus-set-difference seen unseen)
1008 ;; seen might lack articles marked as read by other
1009 ;; imap clients! we correct this
1010 seen (append seen (imap-search "SEEN"))
1013 seen (gnus-compress-sequence seen t)
1014 ;; we can't return '(1) since this isn't a "list of ranges",
1015 ;; and we can't return '((1)) since g-list-of-unread-articles
1016 ;; is buggy so we return '((1 . 1)).
1017 seen (if (and (integerp (car seen))
1019 (list (cons (car seen) (car seen)))
1021 (gnus-info-set-read info seen)))
1023 (mapcar (lambda (pred)
1024 (when (or (eq (cdr pred) 'recent)
1025 (and (nnimap-mark-permanent-p (cdr pred))
1026 (member (nnimap-mark-to-flag (cdr pred))
1027 (imap-mailbox-get 'flags))))
1028 (gnus-info-set-marks
1030 (gnus-update-alist-soft
1032 (gnus-compress-sequence
1033 (imap-search (nnimap-mark-to-predicate (cdr pred))))
1034 (gnus-info-marks info))
1036 gnus-article-mark-lists)
1038 (when nnimap-importantize-dormant
1039 ;; nnimap mark dormant article as ticked too (for other clients)
1040 ;; so we remove that mark for gnus since we support dormant
1041 (gnus-info-set-marks
1043 (gnus-update-alist-soft
1045 (gnus-remove-from-range
1046 (cdr-safe (assoc 'tick (gnus-info-marks info)))
1047 (cdr-safe (assoc 'dormant (gnus-info-marks info))))
1048 (gnus-info-marks info))
1051 (gnus-message 5 "nnimap: Updating info for %s...done"
1052 (gnus-info-group info))
1056 (deffoo nnimap-request-type (group &optional article)
1057 (if (and nnimap-news-groups (string-match nnimap-news-groups group))
1061 (deffoo nnimap-request-set-mark (group actions &optional server)
1062 (when (nnimap-possibly-change-group group server)
1063 (with-current-buffer nnimap-server-buffer
1065 (gnus-message 7 "nnimap: Setting marks in %s..." group)
1066 (while (setq action (pop actions))
1067 (let ((range (nth 0 action))
1068 (what (nth 1 action))
1069 (cmdmarks (nth 2 action))
1071 ;; bookmark can't be stored (not list/range
1072 (setq cmdmarks (delq 'bookmark cmdmarks))
1073 ;; killed can't be stored (not list/range
1074 (setq cmdmarks (delq 'killed cmdmarks))
1075 ;; unsent are for nndraft groups only
1076 (setq cmdmarks (delq 'unsent cmdmarks))
1077 ;; cache flags are pointless on the server
1078 (setq cmdmarks (delq 'cache cmdmarks))
1079 ;; seen flags are local to each gnus
1080 (setq cmdmarks (delq 'seen cmdmarks))
1081 ;; recent marks can't be set
1082 (setq cmdmarks (delq 'recent cmdmarks))
1083 (when nnimap-importantize-dormant
1084 ;; flag dormant articles as ticked
1085 (if (memq 'dormant cmdmarks)
1086 (setq cmdmarks (cons 'tick cmdmarks))))
1087 ;; remove stuff we are forbidden to store
1088 (mapcar (lambda (mark)
1089 (if (imap-message-flag-permanent-p
1090 (nnimap-mark-to-flag mark))
1091 (setq marks (cons mark marks))))
1093 (when (and range marks)
1094 (cond ((eq what 'del)
1095 (imap-message-flags-del
1096 (imap-range-to-message-set range)
1097 (nnimap-mark-to-flag marks nil t)))
1099 (imap-message-flags-add
1100 (imap-range-to-message-set range)
1101 (nnimap-mark-to-flag marks nil t)))
1103 (imap-message-flags-set
1104 (imap-range-to-message-set range)
1105 (nnimap-mark-to-flag marks nil t)))))))
1106 (gnus-message 7 "nnimap: Setting marks in %s...done" group))))
1109 (defun nnimap-split-fancy ()
1110 "Like the function `nnmail-split-fancy', but uses `nnimap-split-fancy'."
1111 (let ((nnmail-split-fancy nnimap-split-fancy))
1112 (nnmail-split-fancy)))
1114 (defun nnimap-split-to-groups (rules)
1115 ;; tries to match all rules in nnimap-split-rule against content of
1116 ;; nntp-server-buffer, returns a list of groups that matched.
1117 (with-current-buffer nntp-server-buffer
1118 ;; Fold continuation lines.
1119 (goto-char (point-min))
1120 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
1121 (replace-match " " t t))
1122 (if (functionp rules)
1124 (let (to-groups regrepp)
1126 (dolist (rule rules to-groups)
1127 (let ((group (car rule))
1128 (regexp (cadr rule)))
1129 (goto-char (point-min))
1130 (when (and (if (stringp regexp)
1132 (setq regrepp (string-match "\\\\[0-9&]" group))
1133 (re-search-forward regexp nil t))
1134 (funcall regexp group))
1135 ;; Don't enter the article into the same group twice.
1136 (not (assoc group to-groups)))
1138 (nnmail-expand-newtext group)
1141 (or nnimap-split-crosspost
1142 (throw 'split-done to-groups))))))))))
1144 (defun nnimap-assoc-match (key alist)
1146 (while (and alist (not element))
1147 (if (string-match (car (car alist)) key)
1148 (setq element (car alist)))
1149 (setq alist (cdr alist)))
1152 (defun nnimap-split-find-rule (server inbox)
1153 (if (and (listp nnimap-split-rule) (listp (car nnimap-split-rule))
1154 (list (cdar nnimap-split-rule)) (listp (cadar nnimap-split-rule)))
1156 (cadr (nnimap-assoc-match inbox (cdr (nnimap-assoc-match
1157 server nnimap-split-rule))))
1160 (defun nnimap-split-find-inbox (server)
1161 (if (listp nnimap-split-inbox)
1163 (list nnimap-split-inbox)))
1165 (defun nnimap-split-articles (&optional group server)
1166 (when (nnimap-possibly-change-server server)
1167 (with-current-buffer nnimap-server-buffer
1168 (let (rule inbox removeorig (inboxes (nnimap-split-find-inbox server)))
1169 ;; iterate over inboxes
1170 (while (and (setq inbox (pop inboxes))
1171 (nnimap-possibly-change-group inbox)) ;; SELECT
1172 ;; find split rule for this server / inbox
1173 (when (setq rule (nnimap-split-find-rule server inbox))
1174 ;; iterate over articles
1175 (dolist (article (imap-search nnimap-split-predicate))
1176 (when (nnimap-request-head article)
1177 ;; copy article to right group(s)
1178 (setq removeorig nil)
1179 (dolist (to-group (nnimap-split-to-groups rule))
1180 (cond ((eq to-group 'junk)
1181 (message "IMAP split removed %s:%s:%d" server inbox
1183 (setq removeorig t))
1184 ((imap-message-copy (number-to-string article)
1185 to-group nil 'nocopyuid)
1186 (message "IMAP split moved %s:%s:%d to %s" server
1187 inbox article to-group)
1189 (when nnmail-cache-accepted-message-ids
1190 (with-current-buffer nntp-server-buffer
1191 (nnmail-cache-insert (nnmail-fetch-field
1192 "message-id") to-group)))
1193 ;; Add the group-art list to the history list.
1194 (push (list (cons to-group 0)) nnmail-split-history))
1196 (message "IMAP split failed to move %s:%s:%d to %s"
1197 server inbox article to-group))))
1198 ;; remove article if it was successfully copied somewhere
1200 (imap-message-flags-add (format "%d" article)
1201 "\\Seen \\Deleted")))))
1202 (when (imap-mailbox-select inbox) ;; just in case
1203 ;; todo: UID EXPUNGE (if available) to remove splitted articles
1204 (imap-mailbox-expunge)
1205 (imap-mailbox-close)))
1206 (when nnmail-cache-accepted-message-ids
1207 (nnmail-cache-close))
1210 (deffoo nnimap-request-scan (&optional group server)
1211 (nnimap-split-articles group server))
1213 (deffoo nnimap-request-newgroups (date &optional server)
1214 (when (nnimap-possibly-change-server server)
1215 (with-current-buffer nntp-server-buffer
1216 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s..."
1217 (if (> (length server) 0) " on " "") server)
1219 (nnimap-before-find-minmax-bugworkaround)
1220 (dolist (pattern (nnimap-pattern-to-list-arguments
1221 nnimap-list-pattern))
1222 (dolist (mbx (imap-mailbox-lsub "*" (car pattern) nil
1223 nnimap-server-buffer))
1225 (dolist (mailbox (imap-mailbox-get 'list-flags mbx
1226 nnimap-server-buffer))
1227 (if (string= (downcase mailbox) "\\noselect")
1230 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1232 (insert (format "\"%s\" %d %d y\n"
1233 mbx (or (nth 2 info) 0)
1234 (max 1 (or (nth 1 info) 1)))))))))
1235 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s...done"
1236 (if (> (length server) 0) " on " "") server))
1239 (deffoo nnimap-request-create-group (group &optional server args)
1240 (when (nnimap-possibly-change-server server)
1241 (or (imap-mailbox-status group 'uidvalidity nnimap-server-buffer)
1242 (imap-mailbox-create group nnimap-server-buffer))))
1244 (defun nnimap-time-substract (time1 time2)
1245 "Return TIME for TIME1 - TIME2."
1246 (let* ((ms (- (car time1) (car time2)))
1247 (ls (- (nth 1 time1) (nth 1 time2))))
1249 (list (- ms 1) (+ (expt 2 16) ls))
1252 (defun nnimap-date-days-ago (daysago)
1253 "Return date, in format \"3-Aug-1998\", for DAYSAGO days ago."
1254 (let* ((time (nnimap-time-substract (current-time) (days-to-time daysago)))
1255 (date (format-time-string
1256 (format "%%d-%s-%%Y"
1257 (capitalize (car (rassoc (nth 4 (decode-time time))
1258 parse-time-months))))
1260 (if (eq ?0 (string-to-char date))
1264 (defun nnimap-request-expire-articles-progress ()
1265 (gnus-message 5 "nnimap: Marking article %d for deletion..."
1266 imap-current-message))
1268 (defun nnimap-expiry-target (arts group server)
1269 (unless (eq nnmail-expiry-target 'delete)
1271 (dolist (art (gnus-uncompress-sequence arts))
1272 (nnimap-request-article art group server (current-buffer))
1273 ;; hints for optimization in `nnimap-request-accept-article'
1274 (let ((nnimap-current-move-article art)
1275 (nnimap-current-move-group group)
1276 (nnimap-current-move-server server))
1277 (nnmail-expiry-target-group nnmail-expiry-target group))))
1278 ;; It is not clear if `nnmail-expiry-target' somehow cause the
1279 ;; current group to be changed or not, so we make sure here.
1280 (nnimap-possibly-change-group group server)))
1282 ;; Notice that we don't actually delete anything, we just mark them deleted.
1283 (deffoo nnimap-request-expire-articles (articles group &optional server force)
1284 (let ((artseq (gnus-compress-sequence articles)))
1285 (when (and artseq (nnimap-possibly-change-group group server))
1286 (with-current-buffer nnimap-server-buffer
1289 (nnimap-expiry-target artseq group server)
1290 (when (imap-message-flags-add (imap-range-to-message-set artseq)
1292 (setq articles nil)))
1293 (let ((days (or (and nnmail-expiry-wait-function
1294 (funcall nnmail-expiry-wait-function group))
1295 nnmail-expiry-wait)))
1296 (cond ((eq days 'immediate)
1297 (nnimap-expiry-target artseq group server)
1298 (when (imap-message-flags-add
1299 (imap-range-to-message-set artseq) "\\Deleted")
1300 (setq articles nil)))
1302 (let ((oldarts (imap-search
1303 (format nnimap-expunge-search-string
1304 (imap-range-to-message-set artseq)
1305 (nnimap-date-days-ago days))))
1306 (imap-fetch-data-hook
1307 '(nnimap-request-expire-articles-progress)))
1308 (nnimap-expiry-target oldarts group server)
1310 (imap-message-flags-add
1311 (imap-range-to-message-set
1312 (gnus-compress-sequence oldarts))
1314 (setq articles (gnus-set-difference
1315 articles oldarts)))))))))))
1316 ;; return articles not deleted
1319 (deffoo nnimap-request-move-article (article group server
1320 accept-form &optional last)
1321 (when (nnimap-possibly-change-server server)
1323 (let ((buf (get-buffer-create " *nnimap move*"))
1324 (nnimap-current-move-article article)
1325 (nnimap-current-move-group group)
1326 (nnimap-current-move-server nnimap-current-server)
1328 (and (nnimap-request-article article group server)
1331 (buffer-disable-undo (current-buffer))
1332 (insert-buffer-substring nntp-server-buffer)
1333 (setq result (eval accept-form))
1336 (imap-message-flags-add
1337 (imap-range-to-message-set (list article))
1338 "\\Deleted" 'silent nnimap-server-buffer))
1341 (deffoo nnimap-request-accept-article (group &optional server last)
1342 (when (nnimap-possibly-change-server server)
1345 (if (string= nnimap-current-server nnimap-current-move-server)
1346 ;; moving article within same server, speed it up...
1347 (and (nnimap-possibly-change-group
1348 nnimap-current-move-group)
1349 (imap-message-copy (number-to-string
1350 nnimap-current-move-article)
1351 group 'dontcreate nil
1352 nnimap-server-buffer))
1353 (with-current-buffer (current-buffer)
1354 (goto-char (point-min))
1355 ;; remove any 'From blabla' lines, some IMAP servers
1356 ;; reject the entire message otherwise.
1357 (when (looking-at "^From[^:]")
1358 (kill-region (point) (progn (forward-line) (point))))
1359 ;; turn into rfc822 format (\r\n eol's)
1360 (while (search-forward "\n" nil t)
1361 (replace-match "\r\n"))
1362 (when nnmail-cache-accepted-message-ids
1363 (nnmail-cache-insert (nnmail-fetch-field "message-id"))))
1364 (when (and last nnmail-cache-accepted-message-ids)
1365 (nnmail-cache-close))
1366 ;; this 'or' is for Cyrus server bug
1367 (or (null (imap-current-mailbox nnimap-server-buffer))
1368 (imap-mailbox-unselect nnimap-server-buffer))
1369 (imap-message-append group (current-buffer) nil nil
1370 nnimap-server-buffer)))
1371 (cons group (nth 1 uid))
1372 (nnheader-report 'nnimap (imap-error-text nnimap-server-buffer))))))
1374 (deffoo nnimap-request-delete-group (group force &optional server)
1375 (when (nnimap-possibly-change-server server)
1376 (with-current-buffer nnimap-server-buffer
1378 (or (null (imap-mailbox-status group 'uidvalidity))
1379 (imap-mailbox-delete group))
1383 (deffoo nnimap-request-rename-group (group new-name &optional server)
1384 (when (nnimap-possibly-change-server server)
1385 (imap-mailbox-rename group new-name nnimap-server-buffer)))
1387 (defun nnimap-expunge (mailbox server)
1388 (when (nnimap-possibly-change-group mailbox server)
1389 (imap-mailbox-expunge nil nnimap-server-buffer)))
1391 (defun nnimap-acl-get (mailbox server)
1392 (when (nnimap-possibly-change-server server)
1393 (and (imap-capability 'ACL nnimap-server-buffer)
1394 (imap-mailbox-acl-get mailbox nnimap-server-buffer))))
1396 (defun nnimap-acl-edit (mailbox method old-acls new-acls)
1397 (when (nnimap-possibly-change-server (cadr method))
1398 (unless (imap-capability 'ACL nnimap-server-buffer)
1399 (error "Your server does not support ACL editing"))
1400 (with-current-buffer nnimap-server-buffer
1401 ;; delete all removed identifiers
1402 (mapcar (lambda (old-acl)
1403 (unless (assoc (car old-acl) new-acls)
1404 (or (imap-mailbox-acl-delete (car old-acl) mailbox)
1405 (error "Can't delete ACL for %s" (car old-acl)))))
1407 ;; set all changed acl's
1408 (mapcar (lambda (new-acl)
1409 (let ((new-rights (cdr new-acl))
1410 (old-rights (cdr (assoc (car new-acl) old-acls))))
1411 (unless (and old-rights new-rights
1412 (string= old-rights new-rights))
1413 (or (imap-mailbox-acl-set (car new-acl) new-rights mailbox)
1414 (error "Can't set ACL for %s to %s" (car new-acl)
1420 ;;; Internal functions
1423 ;; This is confusing.
1425 ;; mark => read, tick, draft, reply etc
1426 ;; flag => "\\Seen", "\\Flagged", "\\Draft", "gnus-expire" etc
1427 ;; predicate => "SEEN", "FLAGGED", "DRAFT", "KEYWORD gnus-expire" etc
1429 ;; Mark should not really contain 'read since it's not a "mark" in the Gnus
1430 ;; world, but we cheat. Mark == gnus-article-mark-lists + '(read . read).
1433 (defconst nnimap-mark-to-predicate-alist
1435 (lambda (pair) ; cdr is the mark
1436 (or (assoc (cdr pair)
1441 (reply . "ANSWERED")))
1443 (format "KEYWORD gnus-%s" (symbol-name (cdr pair))))))
1444 (cons '(read . read) gnus-article-mark-lists)))
1446 (defun nnimap-mark-to-predicate (pred)
1447 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP predicate.
1448 This is a string such as \"SEEN\", \"FLAGGED\", \"KEYWORD gnus-expire\",
1449 to be used within a IMAP SEARCH query."
1450 (cdr (assq pred nnimap-mark-to-predicate-alist)))
1452 (defconst nnimap-mark-to-flag-alist
1455 (or (assoc (cdr pair)
1457 (tick . "\\Flagged")
1459 (recent . "\\Recent")
1460 (reply . "\\Answered")))
1462 (format "gnus-%s" (symbol-name (cdr pair))))))
1463 (cons '(read . read) gnus-article-mark-lists)))
1465 (defun nnimap-mark-to-flag-1 (preds)
1466 (if (and (not (null preds)) (listp preds))
1467 (cons (nnimap-mark-to-flag (car preds))
1468 (nnimap-mark-to-flag (cdr preds)))
1469 (cdr (assoc preds nnimap-mark-to-flag-alist))))
1471 (defun nnimap-mark-to-flag (preds &optional always-list make-string)
1472 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP flag.
1473 This is a string such as \"\\Seen\", \"\\Flagged\", \"gnus-expire\", to
1474 be used in a STORE FLAGS command."
1475 (let ((result (nnimap-mark-to-flag-1 preds)))
1476 (setq result (if (and (or make-string always-list)
1477 (not (listp result)))
1481 (mapconcat (lambda (flag)
1483 (mapconcat 'identity flag " ")
1488 (defun nnimap-mark-permanent-p (mark &optional group)
1489 "Return t iff MARK can be permanently (between IMAP sessions) saved on articles, in GROUP."
1490 (imap-message-flag-permanent-p (nnimap-mark-to-flag mark)))
1494 (buffer-disable-undo (get-buffer-create nnimap-debug))
1495 (mapcar (lambda (f) (trace-function-background f nnimap-debug))
1497 nnimap-possibly-change-server
1498 nnimap-verify-uidvalidity
1499 nnimap-find-minmax-uid
1500 nnimap-before-find-minmax-bugworkaround
1501 nnimap-possibly-change-group
1502 ;;nnimap-replace-whitespace
1503 nnimap-retrieve-headers-progress
1504 nnimap-retrieve-which-headers
1505 nnimap-group-overview-filename
1506 nnimap-retrieve-headers-from-file
1507 nnimap-retrieve-headers-from-server
1508 nnimap-retrieve-headers
1509 nnimap-open-connection
1511 nnimap-server-opened
1513 nnimap-request-close
1514 nnimap-status-message
1516 nnimap-request-article-part
1517 nnimap-request-article
1520 nnimap-request-group
1522 nnimap-pattern-to-list-arguments
1525 nnimap-retrieve-groups
1526 nnimap-request-update-info-internal
1528 nnimap-request-set-mark
1529 nnimap-split-to-groups
1530 nnimap-split-find-rule
1531 nnimap-split-find-inbox
1532 nnimap-split-articles
1534 nnimap-request-newgroups
1535 nnimap-request-create-group
1536 nnimap-time-substract
1537 nnimap-date-days-ago
1538 nnimap-request-expire-articles-progress
1539 nnimap-request-expire-articles
1540 nnimap-request-move-article
1541 nnimap-request-accept-article
1542 nnimap-request-delete-group
1543 nnimap-request-rename-group
1544 gnus-group-nnimap-expunge
1545 gnus-group-nnimap-edit-acl
1546 gnus-group-nnimap-edit-acl-done
1547 nnimap-group-mode-hook
1548 nnimap-mark-to-predicate
1549 nnimap-mark-to-flag-1
1551 nnimap-mark-permanent-p
1556 ;;; nnimap.el ends here