1 ;;; nnimap.el --- imap backend for Gnus
2 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
3 ;; Free Software Foundation, Inc.
5 ;; Author: Simon Josefsson <jas@pdc.kth.se>
6 ;; Jim Radford <radford@robby.caltech.edu>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
28 ;; Todo, major things:
30 ;; o Fix Gnus to view correct number of unread/total articles in group buffer
31 ;; o Fix Gnus to handle leading '.' in group names (fixed?)
32 ;; o Finish disconnected mode (moving articles between mailboxes unplugged)
34 ;; o MIME (partial article fetches)
35 ;; o Split to other backends, different split rules for different
38 ;; Todo, minor things:
40 ;; o Don't require half of Gnus -- backends should be standalone
41 ;; o Verify that we don't use IMAP4rev1 specific things (RFC2060 App B)
42 ;; o Dont uid fetch 1,* in nnimap-retrive-groups (slow)
43 ;; o Split up big fetches (1,* header especially) in smaller chunks
44 ;; o What do I do with gnus-newsgroup-*?
45 ;; o Tell Gnus about new groups (how can we tell?)
46 ;; o Respooling (fix Gnus?) (unnecessary?)
47 ;; o Add support for the following: (if applicable)
48 ;; request-list-newsgroups, request-regenerate
50 ;; request-associate-buffer, request-restore-buffer,
51 ;; o Do The Right Thing when UIDVALIDITY changes (what's the right thing?)
52 ;; o Support RFC2221 (Login referrals)
53 ;; o IMAP2BIS compatibility? (RFC2061)
54 ;; o ACAP stuff (perhaps a different project, would be nice to ACAPify
56 ;; o What about Gnus's article editing, can we support it? NO!
57 ;; o Use \Draft to support the draft group??
58 ;; o Duplicate suppression
59 ;; o Rewrite UID SEARCH UID X as UID FETCH X (UID) for those with slow servers
63 (eval-when-compile (require 'cl))
64 (eval-when-compile (require 'gnus-clfns))
75 (eval-when-compile (require 'cl))
79 (defconst nnimap-version "nnimap 1.0")
82 "Reading IMAP mail with Gnus."
85 (defvoo nnimap-address nil
86 "Address of physical IMAP server. If nil, use the virtual server's name.")
88 (defvoo nnimap-server-port nil
89 "Port number on physical IMAP server.
90 If nil, defaults to 993 for TLS/SSL connections and 143 otherwise.")
92 ;; Splitting variables
94 (defcustom nnimap-split-crosspost t
95 "If non-nil, do crossposting if several split methods match the mail.
96 If nil, the first match found will be used."
100 (defcustom nnimap-split-inbox nil
101 "Name of mailbox to split mail from.
103 Mail is read from this mailbox and split according to rules in
106 This can be a string or a list of strings."
108 :type '(choice (string)
111 (define-widget 'nnimap-strict-function 'function
112 "This widget only matches values that are functionp.
114 Warning: This means that a value that is the symbol of a not yet
115 loaded function will not match. Use with care."
116 :match 'nnimap-strict-function-match)
118 (defun nnimap-strict-function-match (widget value)
119 "Ignoring WIDGET, match if VALUE is a function."
122 (defcustom nnimap-split-rule nil
123 "Mail will be split according to these rules.
125 Mail is read from mailbox(es) specified in `nnimap-split-inbox'.
127 If you'd like, for instance, one mail group for mail from the
128 \"gnus-imap\" mailing list, one group for junk mail and leave
129 everything else in the incoming mailbox, you could do something like
132 \(setq nnimap-split-rule '((\"INBOX.gnus-imap\" \"From:.*gnus-imap\")
133 (\"INBOX.junk\" \"Subject:.*buy\")))
135 As you can see, `nnimap-split-rule' is a list of lists, where the
136 first element in each \"rule\" is the name of the IMAP mailbox (or the
137 symbol `junk' if you want to remove the mail), and the second is a
138 regexp that nnimap will try to match on the header to find a fit.
140 The second element can also be a function. In that case, it will be
141 called narrowed to the headers with the first element of the rule as
142 the argument. It should return a non-nil value if it thinks that the
143 mail belongs in that group.
145 This variable can also have a function as its value, the function will
146 be called with the headers narrowed and should return a group where it
147 thinks the article should be splitted to. See `nnimap-split-fancy'.
149 To allow for different split rules on different virtual servers, and
150 even different split rules in different inboxes on the same server,
151 the syntax of this variable have been extended along the lines of:
153 \(setq nnimap-split-rule
154 '((\"my1server\" (\".*\" ((\"ding\" \"ding@gnus.org\")
155 (\"junk\" \"From:.*Simon\")))
156 (\"my2server\" (\"INBOX\" nnimap-split-fancy))
157 (\"my[34]server\" (\".*\" ((\"private\" \"To:.*Simon\")
158 (\"junk\" my-junk-func)))))
160 The virtual server name is in fact a regexp, so that the same rules
161 may apply to several servers. In the example, the servers
162 \"my3server\" and \"my4server\" both use the same rules. Similarly,
163 the inbox string is also a regexp. The actual splitting rules are as
164 before, either a function, or a list with group/regexp or
165 group/function elements."
167 :type '(choice :tag "Rule type"
168 (repeat :menu-tag "Single-server"
169 :tag "Single-server list"
170 (list (string :tag "Mailbox")
171 (choice :tag "Predicate"
172 (regexp :tag "A regexp")
173 (nnimap-strict-function :tag "A function"))))
174 (choice :menu-tag "A function"
176 (function-item nnimap-split-fancy)
177 (function-item nnmail-split-fancy)
178 (nnimap-strict-function :tag "User-defined function"))
179 (repeat :menu-tag "Multi-server (extended)"
180 :tag "Multi-server list"
181 (list (regexp :tag "Server regexp")
182 (list (regexp :tag "Incoming Mailbox regexp")
183 (repeat :tag "Rules for matching server(s) and mailbox(es)"
184 (list (string :tag "Destination mailbox")
185 (choice :tag "Predicate"
186 (regexp :tag "A Regexp")
187 (nnimap-strict-function :tag "A Function")))))))))
189 (defcustom nnimap-split-predicate "UNSEEN UNDELETED"
190 "The predicate used to find articles to split.
191 If you use another IMAP client to peek on articles but always would
192 like nnimap to split them once it's started, you could change this to
193 \"UNDELETED\". Other available predicates are available in
194 RFC2060 section 6.4.4."
198 (defcustom nnimap-split-fancy nil
199 "Like the variable `nnmail-split-fancy'."
203 (defvar nnimap-split-download-body-default nil
204 "Internal variable with default value for `nnimap-split-download-body'.")
206 (defcustom nnimap-split-download-body 'default
207 "Whether to download entire articles during splitting.
208 This is generally not required, and will slow things down considerably.
209 You may need it if you want to use an advanced splitting function that
210 analyses the body before splitting the article.
211 If this variable is nil, bodies will not be downloaded; if this
212 variable is the symbol `default' the default behaviour is
213 used (which currently is nil, unless you use a statistical
214 spam.el test); if this variable is another non-nil value bodies
217 :type '(choice (const :tag "Let system decide" deault)
220 ;; Performance / bug workaround variables
222 (defcustom nnimap-close-asynchronous t
223 "Close mailboxes asynchronously in `nnimap-close-group'.
224 This means that errors cought by nnimap when closing the mailbox will
225 not prevent Gnus from updating the group status, which may be harmful.
226 However, it increases speed."
230 (defcustom nnimap-dont-close t
231 "Never close mailboxes.
232 This increases the speed of closing mailboxes (quiting group) but may
233 decrease the speed of selecting another mailbox later. Re-selecting
234 the same mailbox will be faster though."
238 (defcustom nnimap-retrieve-groups-asynchronous t
239 "Send asynchronous STATUS commands for each mailbox before checking mail.
240 If you have mailboxes that rarely receives mail, this speeds up new
241 mail checking. It works by first sending STATUS commands for each
242 mailbox, and then only checking groups which has a modified UIDNEXT
243 more carefully for new mail.
245 In summary, the default is O((1-p)*k+p*n) and changing it to nil makes
246 it O(n). If p is small, then the default is probably faster."
250 (defvoo nnimap-need-unselect-to-notice-new-mail nil
251 "Unselect mailboxes before looking for new mail in them.
252 Some servers seem to need this under some circumstances.")
254 ;; Authorization / Privacy variables
256 (defvoo nnimap-auth-method nil
259 (defvoo nnimap-stream nil
260 "How nnimap will connect to the server.
262 The default, nil, will try to use the \"best\" method the server can
267 1) you want to connect with TLS/SSL. The TLS/SSL integration
268 with IMAP is suboptimal so you'll have to tell it
271 2) your server is more capable than your environment -- i.e. your
272 server accept Kerberos login's but you haven't installed the
273 `imtest' program or your machine isn't configured for Kerberos.
275 Possible choices: gssapi, kerberos4, starttls, tls, ssl, network, shell.
276 See also `imap-streams' and `imap-stream-alist'.")
278 (defvoo nnimap-authenticator nil
279 "How nnimap authenticate itself to the server.
281 The default, nil, will try to use the \"best\" method the server can
284 There is only one reason for fiddling with this variable, and that is
285 if your server is more capable than your environment -- i.e. you
286 connect to a server that accept Kerberos login's but you haven't
287 installed the `imtest' program or your machine isn't configured for
290 Possible choices: gssapi, kerberos4, digest-md5, cram-md5, login, anonymous.
291 See also `imap-authenticators' and `imap-authenticator-alist'")
293 (defvoo nnimap-directory (nnheader-concat gnus-directory "overview/")
294 "Directory to keep NOV cache files for nnimap groups.
295 See also `nnimap-nov-file-name'.")
297 (defvoo nnimap-nov-file-name "nnimap."
298 "NOV cache base filename.
299 The group name and `nnimap-nov-file-name-suffix' will be appended. A
300 typical complete file name would be
301 ~/News/overview/nnimap.pdc.INBOX.ding.nov, or
302 ~/News/overview/nnimap/pdc/INBOX/ding/nov if
303 `nnmail-use-long-file-names' is nil")
305 (defvoo nnimap-nov-file-name-suffix ".novcache"
306 "Suffix for NOV cache base filename.")
308 (defvoo nnimap-nov-is-evil gnus-agent
309 "If non-nil, never generate or use a local nov database for this backend.
310 Using nov databases should speed up header fetching considerably.
311 However, it will invoke a UID SEARCH UID command on the server, and
312 some servers implement this command inefficiently by opening each and
313 every message in the group, thus making it quite slow.
314 Unlike other backends, you do not need to take special care if you
315 flip this variable.")
317 (defvoo nnimap-expunge-on-close 'always ; 'ask, 'never
318 "Whether to expunge a group when it is closed.
319 When a IMAP group with articles marked for deletion is closed, this
320 variable determine if nnimap should actually remove the articles or
323 If always, nnimap always perform a expunge when closing the group.
324 If never, nnimap never expunges articles marked for deletion.
325 If ask, nnimap will ask you if you wish to expunge marked articles.
327 When setting this variable to `never', you can only expunge articles
328 by using `G x' (gnus-group-nnimap-expunge) from the Group buffer.")
330 (defvoo nnimap-list-pattern "*"
331 "A string LIMIT or list of strings with mailbox wildcards used to limit available groups.
332 See below for available wildcards.
334 The LIMIT string can be a cons cell (REFERENCE . LIMIT), where
335 REFERENCE will be passed as the first parameter to LIST/LSUB. The
336 semantics of this are server specific, on the University of Washington
337 server you can specify a directory.
340 '(\"INBOX\" \"mail/*\" (\"~friend/mail/\" . \"list/*\"))
342 There are two wildcards * and %. * matches everything, % matches
343 everything in the current hierarchy.")
345 (defvoo nnimap-news-groups nil
346 "IMAP support a news-like mode, also known as bulletin board mode,
347 where replies is sent via IMAP instead of SMTP.
349 This variable should contain a regexp matching groups where you wish
350 replies to be stored to the mailbox directly.
353 '(\"^[^I][^N][^B][^O][^X].*$\")
355 This will match all groups not beginning with \"INBOX\".
357 Note that there is nothing technically different between mail-like and
358 news-like mailboxes. If you wish to have a group with todo items or
359 similar which you wouldn't want to set up a mailing list for, you can
360 use this to make replies go directly to the group.")
362 (defvoo nnimap-expunge-search-string "UID %s NOT SINCE %s"
363 "IMAP search command to use for articles that are to be expired.
364 The first %s is replaced by a UID set of articles to search on,
365 and the second %s is replaced by a date criterium.
367 One useful (and perhaps the only useful) value to change this to would
368 be `UID %s NOT SENTSINCE %s' to make nnimap use the Date: header
369 instead of the internal date of messages. See section 6.4.4 of RFC
370 2060 for more information on valid strings.")
372 (defvoo nnimap-importantize-dormant t
373 "If non-nil, mark \"dormant\" articles as \"ticked\" for other IMAP clients.
374 Note that within Gnus, dormant articles will still (only) be
375 marked as ticked. This is to make \"dormant\" articles stand out,
376 just like \"ticked\" articles, in other IMAP clients.")
378 (defvoo nnimap-server-address nil
379 "Obsolete. Use `nnimap-address'.")
381 (defcustom nnimap-authinfo-file "~/.authinfo"
382 "Authorization information for IMAP servers. In .netrc format."
385 (repeat :tag "Entries"
388 :value ("" ("login" . "") ("password" . ""))
392 (const :format "" "login")
393 (string :format "Login: %v"))
395 (const :format "" "password")
396 (string :format "Password: %v")))))))
398 (defcustom nnimap-prune-cache t
399 "If non-nil, nnimap check whether articles still exist on server before using data stored in NOV cache."
402 (defvar nnimap-request-list-method 'imap-mailbox-list
403 "Method to use to request a list of all folders from the server.
404 If this is 'imap-mailbox-lsub, then use a server-side subscription list to
405 restrict visible folders.")
407 (defcustom nnimap-id nil
408 "Plist with client identity to send to server upon login.
409 Nil means no information is sent, symbol `no' to disable ID query
410 alltogheter, or plist with identifier-value pairs to send to
411 server. RFC 2971 describes the list as follows:
413 Any string may be sent as a field, but the following are defined to
414 describe certain values that might be sent. Implementations are free
415 to send none, any, or all of these. Strings are not case-sensitive.
416 Field strings MUST NOT be longer than 30 octets. Value strings MUST
417 NOT be longer than 1024 octets. Implementations MUST NOT send more
418 than 30 field-value pairs.
420 name Name of the program
421 version Version number of the program
422 os Name of the operating system
423 os-version Version of the operating system
424 vendor Vendor of the client/server
425 support-url URL to contact for support
426 address Postal address of contact/vendor
427 date Date program was released, specified as a date-time
429 command Command used to start the program
430 arguments Arguments supplied on the command line, if any
432 environment Description of environment, i.e., UNIX environment
433 variables or Windows registry settings
435 Implementations MUST NOT send the same field name more than once.
437 An example plist would be '(\"name\" \"Gnus\" \"version\" gnus-version-number
438 \"os\" system-configuration \"vendor\" \"GNU\")."
440 :type '(choice (const :tag "No information" nil)
441 (const :tag "Disable ID query" no)
442 (plist :key-type string :value-type string)))
444 (defcustom nnimap-debug nil
445 "If non-nil, random debug spews are placed in *nnimap-debug* buffer."
449 ;; Internal variables:
451 (defvar nnimap-debug-buffer "*nnimap-debug*")
452 (defvar nnimap-mailbox-info (gnus-make-hashtable 997))
453 (defvar nnimap-current-move-server nil)
454 (defvar nnimap-current-move-group nil)
455 (defvar nnimap-current-move-article nil)
456 (defvar nnimap-length)
457 (defvar nnimap-progress-chars '(?| ?/ ?- ?\\))
458 (defvar nnimap-progress-how-often 20)
459 (defvar nnimap-counter)
460 (defvar nnimap-server-buffer-alist nil) ;; Map server name to buffers.
461 (defvar nnimap-current-server nil) ;; Current server
462 (defvar nnimap-server-buffer nil) ;; Current servers' buffer
466 (nnoo-define-basics nnimap)
468 ;; Utility functions:
470 (defsubst nnimap-get-server-buffer (server)
471 "Return buffer for SERVER, if nil use current server."
472 (cadr (assoc (or server nnimap-current-server) nnimap-server-buffer-alist)))
474 (defun nnimap-possibly-change-server (server)
475 "Return buffer for SERVER, changing the current server as a side-effect.
476 If SERVER is nil, uses the current server."
477 (setq nnimap-current-server (or server nnimap-current-server)
478 nnimap-server-buffer (nnimap-get-server-buffer nnimap-current-server)))
480 (defun nnimap-verify-uidvalidity (group server)
481 "Verify stored uidvalidity match current one in GROUP on SERVER."
482 (let* ((gnusgroup (gnus-group-prefixed-name
483 group (gnus-server-to-method
484 (format "nnimap:%s" server))))
485 (new-uidvalidity (imap-mailbox-get 'uidvalidity))
486 (old-uidvalidity (gnus-group-get-parameter gnusgroup 'uidvalidity))
487 (dir (file-name-as-directory (expand-file-name nnimap-directory)))
488 (nameuid (nnheader-translate-file-chars
489 (concat nnimap-nov-file-name
490 (if (equal server "")
492 server) "." group "." old-uidvalidity
493 nnimap-nov-file-name-suffix) t))
494 (file (if (or nnmail-use-long-file-names
495 (file-exists-p (expand-file-name nameuid dir)))
496 (expand-file-name nameuid dir)
498 (encode-coding-string
499 (nnheader-replace-chars-in-string nameuid ?. ?/)
500 nnmail-pathname-coding-system)
503 (if (not (equal old-uidvalidity new-uidvalidity))
505 (gnus-delete-file file)
506 (gnus-group-set-parameter gnusgroup 'uidvalidity new-uidvalidity)
508 (gnus-group-add-parameter gnusgroup (cons 'uidvalidity new-uidvalidity))
511 (defun nnimap-before-find-minmax-bugworkaround ()
512 "Function called before iterating through mailboxes with
513 `nnimap-find-minmax-uid'."
514 (when nnimap-need-unselect-to-notice-new-mail
515 ;; XXX this is for UoW imapd problem, it doesn't notice new mail in
516 ;; currently selected mailbox without a re-select/examine.
517 (or (null (imap-current-mailbox nnimap-server-buffer))
518 (imap-mailbox-unselect nnimap-server-buffer))))
520 (defun nnimap-find-minmax-uid (group &optional examine)
521 "Find lowest and highest active article number in GROUP.
522 If EXAMINE is non-nil the group is selected read-only."
523 (with-current-buffer nnimap-server-buffer
524 (when (or (string= group (imap-current-mailbox))
525 (imap-mailbox-select group examine))
527 (when (> (imap-mailbox-get 'exists) 0)
528 (imap-fetch "1,*" "UID" nil 'nouidfetch)
529 (imap-message-map (lambda (uid Uid)
530 (setq minuid (if minuid (min minuid uid) uid)
531 maxuid (if maxuid (max maxuid uid) uid)))
533 (list (imap-mailbox-get 'exists) minuid maxuid)))))
535 (defun nnimap-possibly-change-group (group &optional server)
536 "Make GROUP the current group, and SERVER the current server."
537 (when (nnimap-possibly-change-server server)
538 (with-current-buffer nnimap-server-buffer
539 (if (or (null group) (imap-current-mailbox-p group))
541 (if (imap-mailbox-select group)
542 (if (or (nnimap-verify-uidvalidity
543 group (or server nnimap-current-server))
544 (zerop (imap-mailbox-get 'exists group))
545 t ;; for OGnus to see if ignoring uidvalidity
546 ;; changes has any bad effects.
549 "nnimap: Group %s is not uidvalid. Continue? " group)))
551 (imap-mailbox-unselect)
552 (error "nnimap: Group %s is not uid-valid" group))
553 (nnheader-report 'nnimap (imap-error-text)))))))
555 (defun nnimap-replace-whitespace (string)
556 "Return STRING with all whitespace replaced with space."
558 (while (string-match "[\r\n\t]+" string)
559 (setq string (replace-match " " t t string)))
562 ;; Required backend functions
564 (defun nnimap-retrieve-headers-progress ()
565 "Hook to insert NOV line for current article into `nntp-server-buffer'."
566 (and (numberp nnmail-large-newsgroup)
567 (zerop (% (incf nnimap-counter) nnimap-progress-how-often))
568 (> nnimap-length nnmail-large-newsgroup)
569 (nnheader-message 6 "nnimap: Retrieving headers... %c"
570 (nth (/ (% nnimap-counter
571 (* (length nnimap-progress-chars)
572 nnimap-progress-how-often))
573 nnimap-progress-how-often)
574 nnimap-progress-chars)))
575 (with-current-buffer nntp-server-buffer
576 (let (headers lines chars uid mbx)
577 (with-current-buffer nnimap-server-buffer
578 (setq uid imap-current-message
579 mbx imap-current-mailbox
580 headers (nnimap-demule
581 (if (imap-capability 'IMAP4rev1)
582 ;; xxx don't just use car? alist doesn't contain
583 ;; anything else now, but it might...
584 (nth 2 (car (imap-message-get uid 'BODYDETAIL)))
585 (imap-message-get uid 'RFC822.HEADER)))
586 lines (imap-body-lines (imap-message-body imap-current-message))
587 chars (imap-message-get imap-current-message 'RFC822.SIZE)))
590 (buffer-disable-undo)
592 (let ((head (nnheader-parse-naked-head)))
593 (mail-header-set-number head uid)
594 (mail-header-set-chars head chars)
595 (mail-header-set-lines head lines)
596 (mail-header-set-xref
597 head (format "%s %s:%d" (system-name) mbx uid))
600 (defun nnimap-retrieve-which-headers (articles fetch-old)
601 "Get a range of articles to fetch based on ARTICLES and FETCH-OLD."
602 (with-current-buffer nnimap-server-buffer
603 (if (numberp (car-safe articles))
606 (imap-range-to-message-set
607 (gnus-compress-sequence
608 (append (gnus-uncompress-sequence
610 (cons (if (numberp fetch-old)
611 (max 1 (- (car articles) fetch-old))
613 (1- (car articles)))))
615 (mapcar (lambda (msgid)
617 (format "HEADER Message-Id \"%s\"" msgid)))
620 (defun nnimap-group-overview-filename (group server)
621 "Make file name for GROUP on SERVER."
622 (let* ((dir (file-name-as-directory (expand-file-name nnimap-directory)))
623 (uidvalidity (gnus-group-get-parameter
624 (gnus-group-prefixed-name
625 group (gnus-server-to-method
626 (format "nnimap:%s" server)))
628 (name (nnheader-translate-file-chars
629 (concat nnimap-nov-file-name
630 (if (equal server "")
632 server) "." group nnimap-nov-file-name-suffix) t))
633 (nameuid (nnheader-translate-file-chars
634 (concat nnimap-nov-file-name
635 (if (equal server "")
637 server) "." group "." uidvalidity
638 nnimap-nov-file-name-suffix) t))
639 (oldfile (if (or nnmail-use-long-file-names
640 (file-exists-p (expand-file-name name dir)))
641 (expand-file-name name dir)
643 (encode-coding-string
644 (nnheader-replace-chars-in-string name ?. ?/)
645 nnmail-pathname-coding-system)
647 (newfile (if (or nnmail-use-long-file-names
648 (file-exists-p (expand-file-name nameuid dir)))
649 (expand-file-name nameuid dir)
651 (encode-coding-string
652 (nnheader-replace-chars-in-string nameuid ?. ?/)
653 nnmail-pathname-coding-system)
655 (when (and (file-exists-p oldfile) (not (file-exists-p newfile)))
656 (message "nnimap: Upgrading novcache filename...")
658 (gnus-make-directory (file-name-directory newfile))
659 (unless (ignore-errors (rename-file oldfile newfile) t)
660 (if (ignore-errors (copy-file oldfile newfile) t)
661 (delete-file oldfile)
662 (error "Can't rename `%s' to `%s'" oldfile newfile))))
665 (defun nnimap-retrieve-headers-from-file (group server)
666 (with-current-buffer nntp-server-buffer
667 (let ((nov (nnimap-group-overview-filename group server)))
668 (when (file-exists-p nov)
669 (nnheader-insert-file-contents nov)
670 (set-buffer-modified-p nil)
671 (let ((min (ignore-errors (goto-char (point-min))
672 (read (current-buffer))))
673 (max (ignore-errors (goto-char (point-max))
675 (read (current-buffer)))))
676 (if (and (numberp min) (numberp max))
678 ;; junk, remove it, it's saved later
682 (defun nnimap-retrieve-headers-from-server (articles group server)
683 (with-current-buffer nnimap-server-buffer
684 (let ((imap-fetch-data-hook '(nnimap-retrieve-headers-progress))
685 (nnimap-length (gnus-range-length articles))
687 (imap-fetch (imap-range-to-message-set articles)
688 (concat "(UID RFC822.SIZE BODY "
690 (append '(Subject From Date Message-Id
691 References In-Reply-To Xref)
693 nnmail-extra-headers))))
694 (if (imap-capability 'IMAP4rev1)
695 (format "BODY.PEEK[HEADER.FIELDS %s])" headers)
696 (format "RFC822.HEADER.LINES %s)" headers)))))
697 (and (numberp nnmail-large-newsgroup)
698 (> nnimap-length nnmail-large-newsgroup)
699 (nnheader-message 6 "nnimap: Retrieving headers...done")))))
701 (defun nnimap-dont-use-nov-p (group server)
702 (or gnus-nov-is-evil nnimap-nov-is-evil
703 (unless (and (gnus-make-directory
705 (nnimap-group-overview-filename group server)))
707 (nnimap-group-overview-filename group server)))
708 (message "nnimap: Nov cache not writable, %s"
709 (nnimap-group-overview-filename group server)))))
711 (deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
712 (when (nnimap-possibly-change-group group server)
713 (with-current-buffer nntp-server-buffer
715 (if (nnimap-dont-use-nov-p group server)
716 (nnimap-retrieve-headers-from-server
717 (gnus-compress-sequence articles) group server)
718 (let (uids cached low high)
719 (when (setq uids (nnimap-retrieve-which-headers articles fetch-old)
721 high (car (last uids)))
722 (if (setq cached (nnimap-retrieve-headers-from-file group server))
724 ;; fetch articles with uids before cache block
725 (when (< low (car cached))
726 (goto-char (point-min))
727 (nnimap-retrieve-headers-from-server
728 (cons low (1- (car cached))) group server))
729 ;; fetch articles with uids after cache block
730 (when (> high (cdr cached))
731 (goto-char (point-max))
732 (nnimap-retrieve-headers-from-server
733 (cons (1+ (cdr cached)) high) group server))
734 (when nnimap-prune-cache
735 ;; remove nov's for articles which has expired on server
736 (goto-char (point-min))
737 (dolist (uid (gnus-set-difference articles uids))
738 (when (re-search-forward (format "^%d\t" uid) nil t)
739 (gnus-delete-line)))))
740 ;; nothing cached, fetch whole range from server
741 (nnimap-retrieve-headers-from-server
742 (cons low high) group server))
743 (when (buffer-modified-p)
745 (point-min) (point-max)
746 (nnimap-group-overview-filename group server) nil 'nomesg))
747 (nnheader-nov-delete-outside-range low high))))
750 (defun nnimap-open-connection (server)
751 (if (not (imap-open nnimap-address nnimap-server-port nnimap-stream
752 nnimap-authenticator nnimap-server-buffer))
753 (nnheader-report 'nnimap "Can't open connection to server %s" server)
754 (unless (or (imap-capability 'IMAP4 nnimap-server-buffer)
755 (imap-capability 'IMAP4rev1 nnimap-server-buffer))
756 (imap-close nnimap-server-buffer)
757 (nnheader-report 'nnimap "Server %s is not IMAP4 compliant" server))
758 (let* ((list (gnus-parse-netrc nnimap-authinfo-file))
759 (port (if nnimap-server-port
760 (int-to-string nnimap-server-port)
762 (alist (or (gnus-netrc-machine list server port "imap")
763 (gnus-netrc-machine list
764 (or nnimap-server-address
767 (user (gnus-netrc-get alist "login"))
768 (passwd (gnus-netrc-get alist "password")))
769 (if (imap-authenticate user passwd nnimap-server-buffer)
771 (push (list server nnimap-server-buffer)
772 nnimap-server-buffer-alist)
773 (imap-id nnimap-id nnimap-server-buffer)
774 (nnimap-possibly-change-server server))
775 (imap-close nnimap-server-buffer)
776 (kill-buffer nnimap-server-buffer)
777 (nnheader-report 'nnimap "Could not authenticate to %s" server)))))
779 (deffoo nnimap-open-server (server &optional defs)
780 (nnheader-init-server-buffer)
781 (if (nnimap-server-opened server)
783 (unless (assq 'nnimap-server-buffer defs)
784 (push (list 'nnimap-server-buffer (concat " *nnimap* " server)) defs))
785 ;; translate `nnimap-server-address' to `nnimap-address' in defs
786 ;; for people that configured nnimap with a very old version
787 (unless (assq 'nnimap-address defs)
788 (if (assq 'nnimap-server-address defs)
789 (push (list 'nnimap-address
790 (cadr (assq 'nnimap-server-address defs))) defs)
791 (push (list 'nnimap-address server) defs)))
792 (nnoo-change-server 'nnimap server defs)
793 (or nnimap-server-buffer
794 (setq nnimap-server-buffer (cadr (assq 'nnimap-server-buffer defs))))
795 (with-current-buffer (get-buffer-create nnimap-server-buffer)
796 (nnoo-change-server 'nnimap server defs))
797 (or (and nnimap-server-buffer
798 (imap-opened nnimap-server-buffer)
799 (if (with-current-buffer nnimap-server-buffer
800 (memq imap-state '(auth select examine)))
802 (imap-close nnimap-server-buffer)
803 (nnimap-open-connection server)))
804 (nnimap-open-connection server))))
806 (deffoo nnimap-server-opened (&optional server)
807 "Whether SERVER is opened.
808 If SERVER is the current virtual server, and the connection to the
809 physical server is alive, this function return a non-nil value. If
810 SERVER is nil, it is treated as the current server."
811 ;; clean up autologouts??
812 (and (or server nnimap-current-server)
813 (nnoo-server-opened 'nnimap (or server nnimap-current-server))
814 (imap-opened (nnimap-get-server-buffer server))))
816 (deffoo nnimap-close-server (&optional server)
817 "Close connection to server and free all resources connected to it.
818 Return nil if the server couldn't be closed for some reason."
819 (let ((server (or server nnimap-current-server)))
820 (when (or (nnimap-server-opened server)
821 (imap-opened (nnimap-get-server-buffer server)))
822 (imap-close (nnimap-get-server-buffer server))
823 (kill-buffer (nnimap-get-server-buffer server))
824 (setq nnimap-server-buffer nil
825 nnimap-current-server nil
826 nnimap-server-buffer-alist
827 (delq server nnimap-server-buffer-alist)))
828 (nnoo-close-server 'nnimap server)))
830 (deffoo nnimap-request-close ()
831 "Close connection to all servers and free all resources that the backend have reserved.
832 All buffers that have been created by that
833 backend should be killed. (Not the nntp-server-buffer, though.) This
834 function is generally only called when Gnus is shutting down."
835 (mapcar (lambda (server) (nnimap-close-server (car server)))
836 nnimap-server-buffer-alist)
837 (setq nnimap-server-buffer-alist nil))
839 (deffoo nnimap-status-message (&optional server)
840 "This function returns the last error message from server."
841 (when (nnimap-possibly-change-server server)
842 (nnoo-status-message 'nnimap server)))
844 (defun nnimap-demule (string)
845 (funcall (if (and (fboundp 'string-as-multibyte)
846 (subrp (symbol-function 'string-as-multibyte)))
851 (defun nnimap-make-callback (article gnus-callback buffer)
852 "Return a callback function."
854 (nnimap-callback ,article ,gnus-callback ,buffer)))
856 (defun nnimap-callback (article gnus-callback buffer)
857 (when (eq article (imap-current-message))
858 (remove-hook 'imap-fetch-data-hook
859 (nnimap-make-callback article gnus-callback buffer))
860 (with-current-buffer buffer
862 (with-current-buffer nnimap-server-buffer
864 (if (imap-capability 'IMAP4rev1)
865 ;; xxx don't just use car? alist doesn't contain
866 ;; anything else now, but it might...
867 (nth 2 (car (imap-message-get article 'BODYDETAIL)))
868 (imap-message-get article 'RFC822)))))
869 (nnheader-ms-strip-cr)
870 (funcall gnus-callback t))))
872 (defun nnimap-request-article-part (article part prop &optional
873 group server to-buffer detail)
874 (when (nnimap-possibly-change-group group server)
875 (let ((article (if (stringp article)
876 (car-safe (imap-search
877 (format "HEADER Message-Id \"%s\"" article)
878 nnimap-server-buffer))
881 (gnus-message 10 "nnimap: Fetching (part of) article %d from %s..."
882 article (or group imap-current-mailbox
883 gnus-newsgroup-name))
884 (if (not nnheader-callback-function)
885 (with-current-buffer (or to-buffer nntp-server-buffer)
887 (let ((data (imap-fetch article part prop nil
888 nnimap-server-buffer)))
890 (insert (nnimap-demule (if detail (nth 2 (car data)) data)))
891 (nnheader-ms-strip-cr)
893 10 "nnimap: Fetching (part of) article %d from %s...done"
894 article (or group imap-current-mailbox gnus-newsgroup-name))
896 (nnheader-report 'nnimap "No such article %d in %s: %s"
897 article (or group imap-current-mailbox
899 (imap-error-text nnimap-server-buffer))
900 (cons group article)))))
901 (add-hook 'imap-fetch-data-hook
902 (nnimap-make-callback article
903 nnheader-callback-function
905 (imap-fetch-asynch article part nil nnimap-server-buffer)
906 (cons group article))))))
908 (deffoo nnimap-asynchronous-p ()
911 (deffoo nnimap-request-article (article &optional group server to-buffer)
912 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
913 (nnimap-request-article-part
914 article "BODY.PEEK[]" 'BODYDETAIL group server to-buffer 'detail)
915 (nnimap-request-article-part
916 article "RFC822.PEEK" 'RFC822 group server to-buffer)))
918 (deffoo nnimap-request-head (article &optional group server to-buffer)
919 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
920 (nnimap-request-article-part
921 article "BODY.PEEK[HEADER]" 'BODYDETAIL group server to-buffer 'detail)
922 (nnimap-request-article-part
923 article "RFC822.HEADER" 'RFC822.HEADER group server to-buffer)))
925 (deffoo nnimap-request-body (article &optional group server to-buffer)
926 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
927 (nnimap-request-article-part
928 article "BODY.PEEK[TEXT]" 'BODYDETAIL group server to-buffer 'detail)
929 (nnimap-request-article-part
930 article "RFC822.TEXT.PEEK" 'RFC822.TEXT group server to-buffer)))
932 (deffoo nnimap-request-group (group &optional server fast)
933 (nnimap-request-update-info-internal
935 (gnus-get-info (gnus-group-prefixed-name
936 group (gnus-server-to-method (format "nnimap:%s" server))))
938 (when (nnimap-possibly-change-group group server)
939 (nnimap-before-find-minmax-bugworkaround)
942 ((null (setq info (nnimap-find-minmax-uid group t)))
943 (nnheader-report 'nnimap "Could not get active info for %s"
946 (nnheader-insert "211 %d %d %d %s\n" (or (nth 0 info) 0)
947 (max 1 (or (nth 1 info) 1))
948 (or (nth 2 info) 0) group)
949 (nnheader-report 'nnimap "Group %s selected" group)
952 (defun nnimap-update-unseen (group &optional server)
953 "Update the unseen count in `nnimap-mailbox-info'."
955 (gnus-group-prefixed-name group server)
956 (let ((old (gnus-gethash-safe (gnus-group-prefixed-name group server)
957 nnimap-mailbox-info)))
958 (list (nth 0 old) (nth 1 old)
959 (imap-mailbox-status group 'unseen nnimap-server-buffer)
961 nnimap-mailbox-info))
963 (defun nnimap-close-group (group &optional server)
964 (with-current-buffer nnimap-server-buffer
965 (when (and (imap-opened)
966 (nnimap-possibly-change-group group server))
967 (nnimap-update-unseen group server)
968 (case nnimap-expunge-on-close
970 (imap-mailbox-expunge nnimap-close-asynchronous)
971 (unless nnimap-dont-close
972 (imap-mailbox-close nnimap-close-asynchronous))))
973 (ask (if (and (imap-search "DELETED")
974 (gnus-y-or-n-p (format "Expunge articles in group `%s'? "
975 imap-current-mailbox)))
977 (imap-mailbox-expunge nnimap-close-asynchronous)
978 (unless nnimap-dont-close
979 (imap-mailbox-close nnimap-close-asynchronous)))
980 (imap-mailbox-unselect)))
981 (t (imap-mailbox-unselect)))
982 (not imap-current-mailbox))))
984 (defun nnimap-pattern-to-list-arguments (pattern)
986 (cons (car-safe p) (or (cdr-safe p) p)))
987 (if (and (listp pattern)
988 (listp (cdr pattern)))
992 (deffoo nnimap-request-list (&optional server)
993 (when (nnimap-possibly-change-server server)
994 (with-current-buffer nntp-server-buffer
996 (gnus-message 5 "nnimap: Generating active list%s..."
997 (if (> (length server) 0) (concat " for " server) ""))
998 (nnimap-before-find-minmax-bugworkaround)
999 (with-current-buffer nnimap-server-buffer
1000 (dolist (pattern (nnimap-pattern-to-list-arguments nnimap-list-pattern))
1001 (dolist (mbx (funcall nnimap-request-list-method
1002 (cdr pattern) (car pattern)))
1003 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags mbx))
1004 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1006 (with-current-buffer nntp-server-buffer
1007 (insert (format "\"%s\" %d %d y\n"
1008 mbx (or (nth 2 info) 0)
1009 (max 1 (or (nth 1 info) 1)))))))))))
1010 (gnus-message 5 "nnimap: Generating active list%s...done"
1011 (if (> (length server) 0) (concat " for " server) ""))
1014 (deffoo nnimap-request-post (&optional server)
1016 (dolist (mbx (message-unquote-tokens
1017 (message-tokenize-header
1018 (message-fetch-field "Newsgroups") ", ")) success)
1019 (let ((to-newsgroup (gnus-group-prefixed-name mbx gnus-command-method)))
1020 (or (gnus-active to-newsgroup)
1021 (gnus-activate-group to-newsgroup)
1022 (if (gnus-y-or-n-p (format "No such group: %s. Create it? "
1024 (or (and (gnus-request-create-group
1025 to-newsgroup gnus-command-method)
1026 (gnus-activate-group to-newsgroup nil nil
1027 gnus-command-method))
1028 (error "Couldn't create group %s" to-newsgroup)))
1029 (error "No such group: %s" to-newsgroup))
1030 (unless (nnimap-request-accept-article mbx (nth 1 gnus-command-method))
1031 (setq success nil))))))
1033 ;; Optional backend functions
1035 (defun nnimap-string-lessp-numerical (s1 s2)
1036 "Return t if first arg string is less than second in numerical order."
1037 (cond ((string= s1 s2)
1039 ((> (length s1) (length s2))
1041 ((< (length s1) (length s2))
1043 ((< (string-to-number (substring s1 0 1))
1044 (string-to-number (substring s2 0 1)))
1046 ((> (string-to-number (substring s1 0 1))
1047 (string-to-number (substring s2 0 1)))
1050 (nnimap-string-lessp-numerical (substring s1 1) (substring s2 1)))))
1052 (deffoo nnimap-retrieve-groups (groups &optional server)
1053 (when (nnimap-possibly-change-server server)
1054 (gnus-message 5 "nnimap: Checking mailboxes...")
1055 (with-current-buffer nntp-server-buffer
1057 (nnimap-before-find-minmax-bugworkaround)
1058 (let (asyncgroups slowgroups)
1059 (if (null nnimap-retrieve-groups-asynchronous)
1060 (setq slowgroups groups)
1061 (dolist (group groups)
1062 (gnus-message 9 "nnimap: Quickly checking mailbox %s" group)
1063 (add-to-list (if (gnus-gethash-safe
1064 (gnus-group-prefixed-name group server)
1065 nnimap-mailbox-info)
1068 (list group (imap-mailbox-status-asynch
1069 group '(uidvalidity uidnext unseen)
1070 nnimap-server-buffer))))
1071 (dolist (asyncgroup asyncgroups)
1072 (let ((group (nth 0 asyncgroup))
1073 (tag (nth 1 asyncgroup))
1075 (when (imap-ok-p (imap-wait-for-tag tag nnimap-server-buffer))
1076 (if (or (not (string=
1077 (nth 0 (gnus-gethash (gnus-group-prefixed-name
1079 nnimap-mailbox-info))
1080 (imap-mailbox-get 'uidvalidity group
1081 nnimap-server-buffer)))
1083 (nth 1 (gnus-gethash (gnus-group-prefixed-name
1085 nnimap-mailbox-info))
1086 (imap-mailbox-get 'uidnext group
1087 nnimap-server-buffer))))
1088 (push (list group) slowgroups)
1089 (insert (nth 3 (gnus-gethash (gnus-group-prefixed-name
1091 nnimap-mailbox-info))))))))
1092 (dolist (group slowgroups)
1093 (if nnimap-retrieve-groups-asynchronous
1094 (setq group (car group)))
1095 (gnus-message 7 "nnimap: Mailbox %s modified" group)
1096 (imap-mailbox-put 'uidnext nil group nnimap-server-buffer)
1097 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags group
1098 nnimap-server-buffer))
1099 (let* ((info (nnimap-find-minmax-uid group 'examine))
1100 (str (format "\"%s\" %d %d y\n" group
1102 (max 1 (or (nth 1 info) 1)))))
1103 (when (> (or (imap-mailbox-get 'recent group
1104 nnimap-server-buffer) 0)
1106 (push (list (cons group 0)) nnmail-split-history))
1108 (when nnimap-retrieve-groups-asynchronous
1110 (gnus-group-prefixed-name group server)
1111 (list (or (imap-mailbox-get
1112 'uidvalidity group nnimap-server-buffer)
1113 (imap-mailbox-status
1114 group 'uidvalidity nnimap-server-buffer))
1115 (or (imap-mailbox-get
1116 'uidnext group nnimap-server-buffer)
1117 (imap-mailbox-status
1118 group 'uidnext nnimap-server-buffer))
1119 (or (imap-mailbox-get
1120 'unseen group nnimap-server-buffer)
1121 (imap-mailbox-status
1122 group 'unseen nnimap-server-buffer))
1124 nnimap-mailbox-info)))))))
1125 (gnus-message 5 "nnimap: Checking mailboxes...done")
1128 (deffoo nnimap-request-update-info-internal (group info &optional server)
1129 (when (nnimap-possibly-change-group group server)
1130 (when info;; xxx what does this mean? should we create a info?
1131 (with-current-buffer nnimap-server-buffer
1132 (gnus-message 5 "nnimap: Updating info for %s..."
1133 (gnus-info-group info))
1135 (when (nnimap-mark-permanent-p 'read)
1137 ;; read info could contain articles marked unread by other
1138 ;; imap clients! we correct this
1139 (setq seen (gnus-uncompress-range (gnus-info-read info))
1140 unseen (imap-search "UNSEEN UNDELETED")
1141 seen (gnus-set-difference seen unseen)
1142 ;; seen might lack articles marked as read by other
1143 ;; imap clients! we correct this
1144 seen (append seen (imap-search "SEEN"))
1147 seen (gnus-compress-sequence seen t)
1148 ;; we can't return '(1) since this isn't a "list of ranges",
1149 ;; and we can't return '((1)) since g-list-of-unread-articles
1150 ;; is buggy so we return '((1 . 1)).
1151 seen (if (and (integerp (car seen))
1153 (list (cons (car seen) (car seen)))
1155 (gnus-info-set-read info seen)))
1157 (mapcar (lambda (pred)
1158 (when (or (eq (cdr pred) 'recent)
1159 (and (nnimap-mark-permanent-p (cdr pred))
1160 (member (nnimap-mark-to-flag (cdr pred))
1161 (imap-mailbox-get 'flags))))
1162 (gnus-info-set-marks
1164 (gnus-update-alist-soft
1166 (gnus-compress-sequence
1167 (imap-search (nnimap-mark-to-predicate (cdr pred))))
1168 (gnus-info-marks info))
1170 gnus-article-mark-lists)
1172 (when nnimap-importantize-dormant
1173 ;; nnimap mark dormant article as ticked too (for other clients)
1174 ;; so we remove that mark for gnus since we support dormant
1175 (gnus-info-set-marks
1177 (gnus-update-alist-soft
1179 (gnus-remove-from-range
1180 (cdr-safe (assoc 'tick (gnus-info-marks info)))
1181 (cdr-safe (assoc 'dormant (gnus-info-marks info))))
1182 (gnus-info-marks info))
1185 (gnus-message 5 "nnimap: Updating info for %s...done"
1186 (gnus-info-group info))
1190 (deffoo nnimap-request-type (group &optional article)
1191 (if (and nnimap-news-groups (string-match nnimap-news-groups group))
1195 (deffoo nnimap-request-set-mark (group actions &optional server)
1196 (when (nnimap-possibly-change-group group server)
1197 (with-current-buffer nnimap-server-buffer
1199 (gnus-message 7 "nnimap: Setting marks in %s..." group)
1200 (while (setq action (pop actions))
1201 (let ((range (nth 0 action))
1202 (what (nth 1 action))
1203 (cmdmarks (nth 2 action))
1205 ;; bookmark can't be stored (not list/range
1206 (setq cmdmarks (delq 'bookmark cmdmarks))
1207 ;; killed can't be stored (not list/range
1208 (setq cmdmarks (delq 'killed cmdmarks))
1209 ;; unsent are for nndraft groups only
1210 (setq cmdmarks (delq 'unsent cmdmarks))
1211 ;; cache flags are pointless on the server
1212 (setq cmdmarks (delq 'cache cmdmarks))
1213 ;; seen flags are local to each gnus
1214 (setq cmdmarks (delq 'seen cmdmarks))
1215 ;; recent marks can't be set
1216 (setq cmdmarks (delq 'recent cmdmarks))
1217 (when nnimap-importantize-dormant
1218 ;; flag dormant articles as ticked
1219 (if (memq 'dormant cmdmarks)
1220 (setq cmdmarks (cons 'tick cmdmarks))))
1221 ;; remove stuff we are forbidden to store
1222 (mapcar (lambda (mark)
1223 (if (imap-message-flag-permanent-p
1224 (nnimap-mark-to-flag mark))
1225 (setq marks (cons mark marks))))
1227 (when (and range marks)
1228 (cond ((eq what 'del)
1229 (imap-message-flags-del
1230 (imap-range-to-message-set range)
1231 (nnimap-mark-to-flag marks nil t)))
1233 (imap-message-flags-add
1234 (imap-range-to-message-set range)
1235 (nnimap-mark-to-flag marks nil t)))
1237 (imap-message-flags-set
1238 (imap-range-to-message-set range)
1239 (nnimap-mark-to-flag marks nil t)))))))
1240 (gnus-message 7 "nnimap: Setting marks in %s...done" group))))
1243 (defun nnimap-split-fancy ()
1244 "Like the function `nnmail-split-fancy', but uses `nnimap-split-fancy'."
1245 (let ((nnmail-split-fancy nnimap-split-fancy))
1246 (nnmail-split-fancy)))
1248 (defun nnimap-split-to-groups (rules)
1249 ;; tries to match all rules in nnimap-split-rule against content of
1250 ;; nntp-server-buffer, returns a list of groups that matched.
1251 (with-current-buffer nntp-server-buffer
1252 ;; Fold continuation lines.
1253 (goto-char (point-min))
1254 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
1255 (replace-match " " t t))
1256 (if (functionp rules)
1258 (let (to-groups regrepp)
1260 (dolist (rule rules to-groups)
1261 (let ((group (car rule))
1262 (regexp (cadr rule)))
1263 (goto-char (point-min))
1264 (when (and (if (stringp regexp)
1266 (if (not (stringp group))
1267 (setq group (eval group))
1269 (string-match "\\\\[0-9&]" group)))
1270 (re-search-forward regexp nil t))
1271 (funcall regexp group))
1272 ;; Don't enter the article into the same group twice.
1273 (not (assoc group to-groups)))
1275 (nnmail-expand-newtext group)
1278 (or nnimap-split-crosspost
1279 (throw 'split-done to-groups))))))))))
1281 (defun nnimap-assoc-match (key alist)
1283 (while (and alist (not element))
1284 (if (string-match (car (car alist)) key)
1285 (setq element (car alist)))
1286 (setq alist (cdr alist)))
1289 (defun nnimap-split-find-rule (server inbox)
1290 (if (and (listp nnimap-split-rule) (listp (car nnimap-split-rule))
1291 (list (cdar nnimap-split-rule)) (listp (cadar nnimap-split-rule)))
1293 (cadr (nnimap-assoc-match inbox (cdr (nnimap-assoc-match
1294 server nnimap-split-rule))))
1297 (defun nnimap-split-find-inbox (server)
1298 (if (listp nnimap-split-inbox)
1300 (list nnimap-split-inbox)))
1302 (defun nnimap-split-articles (&optional group server)
1303 (when (nnimap-possibly-change-server server)
1304 (with-current-buffer nnimap-server-buffer
1305 (let (rule inbox removeorig (inboxes (nnimap-split-find-inbox server)))
1306 ;; iterate over inboxes
1307 (while (and (setq inbox (pop inboxes))
1308 (nnimap-possibly-change-group inbox));; SELECT
1309 ;; find split rule for this server / inbox
1310 (when (setq rule (nnimap-split-find-rule server inbox))
1311 ;; iterate over articles
1312 (dolist (article (imap-search nnimap-split-predicate))
1313 (when (if (if (eq nnimap-split-download-body 'default)
1314 nnimap-split-download-body-default
1315 nnimap-split-download-body)
1316 (and (nnimap-request-article article)
1317 (with-current-buffer nntp-server-buffer (mail-narrow-to-head)))
1318 (nnimap-request-head article))
1319 ;; copy article to right group(s)
1320 (setq removeorig nil)
1321 (dolist (to-group (nnimap-split-to-groups rule))
1322 (cond ((eq to-group 'junk)
1323 (message "IMAP split removed %s:%s:%d" server inbox
1325 (setq removeorig t))
1326 ((imap-message-copy (number-to-string article)
1327 to-group nil 'nocopyuid)
1328 (message "IMAP split moved %s:%s:%d to %s" server
1329 inbox article to-group)
1331 (when nnmail-cache-accepted-message-ids
1332 (with-current-buffer nntp-server-buffer
1335 (nnmail-fetch-field "message-id"))
1336 (nnmail-cache-insert msgid
1338 (nnmail-fetch-field "subject"))))))
1339 ;; Add the group-art list to the history list.
1340 (push (list (cons to-group 0)) nnmail-split-history))
1342 (message "IMAP split failed to move %s:%s:%d to %s"
1343 server inbox article to-group))))
1344 (if (if (eq nnimap-split-download-body 'default)
1345 nnimap-split-download-body-default
1346 nnimap-split-download-body)
1348 ;; remove article if it was successfully copied somewhere
1350 (imap-message-flags-add (format "%d" article)
1351 "\\Seen \\Deleted")))))
1352 (when (imap-mailbox-select inbox);; just in case
1353 ;; todo: UID EXPUNGE (if available) to remove splitted articles
1354 (imap-mailbox-expunge)
1355 (imap-mailbox-close)))
1356 (when nnmail-cache-accepted-message-ids
1357 (nnmail-cache-close))
1360 (deffoo nnimap-request-scan (&optional group server)
1361 (nnimap-split-articles group server))
1363 (deffoo nnimap-request-newgroups (date &optional server)
1364 (when (nnimap-possibly-change-server server)
1365 (with-current-buffer nntp-server-buffer
1366 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s..."
1367 (if (> (length server) 0) " on " "") server)
1369 (nnimap-before-find-minmax-bugworkaround)
1370 (dolist (pattern (nnimap-pattern-to-list-arguments
1371 nnimap-list-pattern))
1372 (dolist (mbx (imap-mailbox-lsub (cdr pattern) (car pattern) nil
1373 nnimap-server-buffer))
1375 (dolist (mailbox (imap-mailbox-get 'list-flags mbx
1376 nnimap-server-buffer))
1377 (if (string= (downcase mailbox) "\\noselect")
1380 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1382 (insert (format "\"%s\" %d %d y\n"
1383 mbx (or (nth 2 info) 0)
1384 (max 1 (or (nth 1 info) 1)))))))))
1385 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s...done"
1386 (if (> (length server) 0) " on " "") server))
1389 (deffoo nnimap-request-create-group (group &optional server args)
1390 (when (nnimap-possibly-change-server server)
1391 (or (imap-mailbox-status group 'uidvalidity nnimap-server-buffer)
1392 (imap-mailbox-create group nnimap-server-buffer)
1393 (nnheader-report 'nnimap "%S"
1394 (imap-error-text nnimap-server-buffer)))))
1396 (defun nnimap-time-substract (time1 time2)
1397 "Return TIME for TIME1 - TIME2."
1398 (let* ((ms (- (car time1) (car time2)))
1399 (ls (- (nth 1 time1) (nth 1 time2))))
1401 (list (- ms 1) (+ (expt 2 16) ls))
1404 (defun nnimap-date-days-ago (daysago)
1405 "Return date, in format \"3-Aug-1998\", for DAYSAGO days ago."
1406 (let* ((time (nnimap-time-substract (current-time) (days-to-time daysago)))
1407 (date (format-time-string
1408 (format "%%d-%s-%%Y"
1409 (capitalize (car (rassoc (nth 4 (decode-time time))
1410 parse-time-months))))
1412 (if (eq ?0 (string-to-char date))
1416 (defun nnimap-request-expire-articles-progress ()
1417 (gnus-message 5 "nnimap: Marking article %d for deletion..."
1418 imap-current-message))
1420 (defun nnimap-expiry-target (arts group server)
1421 (unless (eq nnmail-expiry-target 'delete)
1424 (nnimap-request-article art group server (current-buffer))
1425 ;; hints for optimization in `nnimap-request-accept-article'
1426 (let ((nnimap-current-move-article art)
1427 (nnimap-current-move-group group)
1428 (nnimap-current-move-server server))
1429 (nnmail-expiry-target-group nnmail-expiry-target group))))
1430 ;; It is not clear if `nnmail-expiry-target' somehow cause the
1431 ;; current group to be changed or not, so we make sure here.
1432 (nnimap-possibly-change-group group server)))
1434 ;; Notice that we don't actually delete anything, we just mark them deleted.
1435 (deffoo nnimap-request-expire-articles (articles group &optional server force)
1436 (let ((artseq (gnus-compress-sequence articles)))
1437 (when (and artseq (nnimap-possibly-change-group group server))
1438 (with-current-buffer nnimap-server-buffer
1439 (let ((days (or (and nnmail-expiry-wait-function
1440 (funcall nnmail-expiry-wait-function group))
1441 nnmail-expiry-wait)))
1442 (cond ((or force (eq days 'immediate))
1443 (let ((oldarts (imap-search
1445 (imap-range-to-message-set artseq)))))
1447 (nnimap-expiry-target oldarts group server)
1448 (when (imap-message-flags-add
1449 (imap-range-to-message-set
1450 (gnus-compress-sequence oldarts)) "\\Deleted")
1451 (setq articles (gnus-set-difference
1452 articles oldarts))))))
1454 (let ((oldarts (imap-search
1455 (format nnimap-expunge-search-string
1456 (imap-range-to-message-set artseq)
1457 (nnimap-date-days-ago days))))
1458 (imap-fetch-data-hook
1459 '(nnimap-request-expire-articles-progress)))
1461 (nnimap-expiry-target oldarts group server)
1462 (when (imap-message-flags-add
1463 (imap-range-to-message-set
1464 (gnus-compress-sequence oldarts)) "\\Deleted")
1465 (setq articles (gnus-set-difference
1466 articles oldarts)))))))))))
1467 ;; return articles not deleted
1470 (deffoo nnimap-request-move-article (article group server
1471 accept-form &optional last)
1472 (when (nnimap-possibly-change-server server)
1474 (let ((buf (get-buffer-create " *nnimap move*"))
1475 (nnimap-current-move-article article)
1476 (nnimap-current-move-group group)
1477 (nnimap-current-move-server nnimap-current-server)
1479 (and (nnimap-request-article article group server)
1482 (buffer-disable-undo (current-buffer))
1483 (insert-buffer-substring nntp-server-buffer)
1484 (setq result (eval accept-form))
1487 (imap-message-flags-add
1488 (imap-range-to-message-set (list article))
1489 "\\Deleted" 'silent nnimap-server-buffer))
1492 (deffoo nnimap-request-accept-article (group &optional server last)
1493 (when (nnimap-possibly-change-server server)
1496 (if (string= nnimap-current-server nnimap-current-move-server)
1497 ;; moving article within same server, speed it up...
1498 (and (nnimap-possibly-change-group
1499 nnimap-current-move-group)
1500 (imap-message-copy (number-to-string
1501 nnimap-current-move-article)
1502 group 'dontcreate nil
1503 nnimap-server-buffer))
1504 (with-current-buffer (current-buffer)
1505 (goto-char (point-min))
1506 ;; remove any 'From blabla' lines, some IMAP servers
1507 ;; reject the entire message otherwise.
1508 (when (looking-at "^From[^:]")
1509 (delete-region (point) (progn (forward-line) (point))))
1510 ;; turn into rfc822 format (\r\n eol's)
1511 (while (search-forward "\n" nil t)
1512 (replace-match "\r\n"))
1513 (when nnmail-cache-accepted-message-ids
1514 (nnmail-cache-insert (nnmail-fetch-field "message-id")
1516 (nnmail-fetch-field "subject"))))
1517 (when (and last nnmail-cache-accepted-message-ids)
1518 (nnmail-cache-close))
1519 ;; this 'or' is for Cyrus server bug
1520 (or (null (imap-current-mailbox nnimap-server-buffer))
1521 (imap-mailbox-unselect nnimap-server-buffer))
1522 (imap-message-append group (current-buffer) nil nil
1523 nnimap-server-buffer)))
1524 (cons group (nth 1 uid))
1525 (nnheader-report 'nnimap (imap-error-text nnimap-server-buffer))))))
1527 (deffoo nnimap-request-delete-group (group force &optional server)
1528 (when (nnimap-possibly-change-server server)
1529 (with-current-buffer nnimap-server-buffer
1531 (or (null (imap-mailbox-status group 'uidvalidity))
1532 (imap-mailbox-delete group))
1536 (deffoo nnimap-request-rename-group (group new-name &optional server)
1537 (when (nnimap-possibly-change-server server)
1538 (imap-mailbox-rename group new-name nnimap-server-buffer)))
1540 (defun nnimap-expunge (mailbox server)
1541 (when (nnimap-possibly-change-group mailbox server)
1542 (imap-mailbox-expunge nil nnimap-server-buffer)))
1544 (defun nnimap-acl-get (mailbox server)
1545 (when (nnimap-possibly-change-server server)
1546 (and (imap-capability 'ACL nnimap-server-buffer)
1547 (imap-mailbox-acl-get mailbox nnimap-server-buffer))))
1549 (defun nnimap-acl-edit (mailbox method old-acls new-acls)
1550 (when (nnimap-possibly-change-server (cadr method))
1551 (unless (imap-capability 'ACL nnimap-server-buffer)
1552 (error "Your server does not support ACL editing"))
1553 (with-current-buffer nnimap-server-buffer
1554 ;; delete all removed identifiers
1555 (mapcar (lambda (old-acl)
1556 (unless (assoc (car old-acl) new-acls)
1557 (or (imap-mailbox-acl-delete (car old-acl) mailbox)
1558 (error "Can't delete ACL for %s" (car old-acl)))))
1560 ;; set all changed acl's
1561 (mapcar (lambda (new-acl)
1562 (let ((new-rights (cdr new-acl))
1563 (old-rights (cdr (assoc (car new-acl) old-acls))))
1564 (unless (and old-rights new-rights
1565 (string= old-rights new-rights))
1566 (or (imap-mailbox-acl-set (car new-acl) new-rights mailbox)
1567 (error "Can't set ACL for %s to %s" (car new-acl)
1573 ;;; Internal functions
1576 ;; This is confusing.
1578 ;; mark => read, tick, draft, reply etc
1579 ;; flag => "\\Seen", "\\Flagged", "\\Draft", "gnus-expire" etc
1580 ;; predicate => "SEEN", "FLAGGED", "DRAFT", "KEYWORD gnus-expire" etc
1582 ;; Mark should not really contain 'read since it's not a "mark" in the Gnus
1583 ;; world, but we cheat. Mark == gnus-article-mark-lists + '(read . read).
1586 (defconst nnimap-mark-to-predicate-alist
1588 (lambda (pair) ; cdr is the mark
1589 (or (assoc (cdr pair)
1594 (reply . "ANSWERED")))
1596 (format "KEYWORD gnus-%s" (symbol-name (cdr pair))))))
1597 (cons '(read . read) gnus-article-mark-lists)))
1599 (defun nnimap-mark-to-predicate (pred)
1600 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP predicate.
1601 This is a string such as \"SEEN\", \"FLAGGED\", \"KEYWORD gnus-expire\",
1602 to be used within a IMAP SEARCH query."
1603 (cdr (assq pred nnimap-mark-to-predicate-alist)))
1605 (defconst nnimap-mark-to-flag-alist
1608 (or (assoc (cdr pair)
1610 (tick . "\\Flagged")
1612 (recent . "\\Recent")
1613 (reply . "\\Answered")))
1615 (format "gnus-%s" (symbol-name (cdr pair))))))
1616 (cons '(read . read) gnus-article-mark-lists)))
1618 (defun nnimap-mark-to-flag-1 (preds)
1619 (if (and (not (null preds)) (listp preds))
1620 (cons (nnimap-mark-to-flag (car preds))
1621 (nnimap-mark-to-flag (cdr preds)))
1622 (cdr (assoc preds nnimap-mark-to-flag-alist))))
1624 (defun nnimap-mark-to-flag (preds &optional always-list make-string)
1625 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP flag.
1626 This is a string such as \"\\Seen\", \"\\Flagged\", \"gnus-expire\", to
1627 be used in a STORE FLAGS command."
1628 (let ((result (nnimap-mark-to-flag-1 preds)))
1629 (setq result (if (and (or make-string always-list)
1630 (not (listp result)))
1634 (mapconcat (lambda (flag)
1636 (mapconcat 'identity flag " ")
1641 (defun nnimap-mark-permanent-p (mark &optional group)
1642 "Return t iff MARK can be permanently (between IMAP sessions) saved on articles, in GROUP."
1643 (imap-message-flag-permanent-p (nnimap-mark-to-flag mark)))
1647 (buffer-disable-undo (get-buffer-create nnimap-debug-buffer))
1648 (mapcar (lambda (f) (trace-function-background f nnimap-debug-buffer))
1650 nnimap-possibly-change-server
1651 nnimap-verify-uidvalidity
1652 nnimap-find-minmax-uid
1653 nnimap-before-find-minmax-bugworkaround
1654 nnimap-possibly-change-group
1655 ;;nnimap-replace-whitespace
1656 nnimap-retrieve-headers-progress
1657 nnimap-retrieve-which-headers
1658 nnimap-group-overview-filename
1659 nnimap-retrieve-headers-from-file
1660 nnimap-retrieve-headers-from-server
1661 nnimap-retrieve-headers
1662 nnimap-open-connection
1664 nnimap-server-opened
1666 nnimap-request-close
1667 nnimap-status-message
1669 nnimap-request-article-part
1670 nnimap-request-article
1673 nnimap-request-group
1675 nnimap-pattern-to-list-arguments
1678 nnimap-retrieve-groups
1679 nnimap-request-update-info-internal
1681 nnimap-request-set-mark
1682 nnimap-split-to-groups
1683 nnimap-split-find-rule
1684 nnimap-split-find-inbox
1685 nnimap-split-articles
1687 nnimap-request-newgroups
1688 nnimap-request-create-group
1689 nnimap-time-substract
1690 nnimap-date-days-ago
1691 nnimap-request-expire-articles-progress
1692 nnimap-request-expire-articles
1693 nnimap-request-move-article
1694 nnimap-request-accept-article
1695 nnimap-request-delete-group
1696 nnimap-request-rename-group
1697 gnus-group-nnimap-expunge
1698 gnus-group-nnimap-edit-acl
1699 gnus-group-nnimap-edit-acl-done
1700 nnimap-group-mode-hook
1701 nnimap-mark-to-predicate
1702 nnimap-mark-to-flag-1
1704 nnimap-mark-permanent-p
1709 ;;; nnimap.el ends here