1 ;;; nnimap.el --- imap backend for Gnus
3 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005 Free Software Foundation, Inc.
6 ;; Author: Simon Josefsson <jas@pdc.kth.se>
7 ;; Jim Radford <radford@robby.caltech.edu>
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
29 ;; Todo, major things:
31 ;; o Fix Gnus to view correct number of unread/total articles in group buffer
32 ;; o Fix Gnus to handle leading '.' in group names (fixed?)
33 ;; o Finish disconnected mode (moving articles between mailboxes unplugged)
35 ;; o MIME (partial article fetches)
36 ;; o Split to other backends, different split rules for different
39 ;; Todo, minor things:
41 ;; o Don't require half of Gnus -- backends should be standalone
42 ;; o Verify that we don't use IMAP4rev1 specific things (RFC2060 App B)
43 ;; o Dont uid fetch 1,* in nnimap-retrive-groups (slow)
44 ;; o Split up big fetches (1,* header especially) in smaller chunks
45 ;; o What do I do with gnus-newsgroup-*?
46 ;; o Tell Gnus about new groups (how can we tell?)
47 ;; o Respooling (fix Gnus?) (unnecessary?)
48 ;; o Add support for the following: (if applicable)
49 ;; request-list-newsgroups, request-regenerate
51 ;; request-associate-buffer, request-restore-buffer,
52 ;; o Do The Right Thing when UIDVALIDITY changes (what's the right thing?)
53 ;; o Support RFC2221 (Login referrals)
54 ;; o IMAP2BIS compatibility? (RFC2061)
55 ;; o ACAP stuff (perhaps a different project, would be nice to ACAPify
57 ;; o What about Gnus's article editing, can we support it? NO!
58 ;; o Use \Draft to support the draft group??
59 ;; o Duplicate suppression
60 ;; o Rewrite UID SEARCH UID X as UID FETCH X (UID) for those with slow servers
64 (eval-when-compile (require 'cl))
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 analyzes 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
218 :type '(choice (const :tag "Let system decide" deault)
221 ;; Performance / bug workaround variables
223 (defcustom nnimap-close-asynchronous t
224 "Close mailboxes asynchronously in `nnimap-close-group'.
225 This means that errors caught by nnimap when closing the mailbox will
226 not prevent Gnus from updating the group status, which may be harmful.
227 However, it increases speed."
232 (defcustom nnimap-dont-close t
233 "Never close mailboxes.
234 This increases the speed of closing mailboxes (quiting group) but may
235 decrease the speed of selecting another mailbox later. Re-selecting
236 the same mailbox will be faster though."
241 (defcustom nnimap-retrieve-groups-asynchronous t
242 "Send asynchronous STATUS commands for each mailbox before checking mail.
243 If you have mailboxes that rarely receives mail, this speeds up new
244 mail checking. It works by first sending STATUS commands for each
245 mailbox, and then only checking groups which has a modified UIDNEXT
246 more carefully for new mail.
248 In summary, the default is O((1-p)*k+p*n) and changing it to nil makes
249 it O(n). If p is small, then the default is probably faster."
254 (defvoo nnimap-need-unselect-to-notice-new-mail nil
255 "Unselect mailboxes before looking for new mail in them.
256 Some servers seem to need this under some circumstances.")
258 ;; Authorization / Privacy variables
260 (defvoo nnimap-auth-method nil
263 (defvoo nnimap-stream nil
264 "How nnimap will connect to the server.
266 The default, nil, will try to use the \"best\" method the server can
271 1) you want to connect with TLS/SSL. The TLS/SSL integration
272 with IMAP is suboptimal so you'll have to tell it
275 2) your server is more capable than your environment -- i.e. your
276 server accept Kerberos login's but you haven't installed the
277 `imtest' program or your machine isn't configured for Kerberos.
279 Possible choices: gssapi, kerberos4, starttls, tls, ssl, network, shell.
280 See also `imap-streams' and `imap-stream-alist'.")
282 (defvoo nnimap-authenticator nil
283 "How nnimap authenticate itself to the server.
285 The default, nil, will try to use the \"best\" method the server can
288 There is only one reason for fiddling with this variable, and that is
289 if your server is more capable than your environment -- i.e. you
290 connect to a server that accept Kerberos login's but you haven't
291 installed the `imtest' program or your machine isn't configured for
294 Possible choices: gssapi, kerberos4, digest-md5, cram-md5, login, anonymous.
295 See also `imap-authenticators' and `imap-authenticator-alist'")
297 (defvoo nnimap-directory (nnheader-concat gnus-directory "overview/")
298 "Directory to keep NOV cache files for nnimap groups.
299 See also `nnimap-nov-file-name'.")
301 (defvoo nnimap-nov-file-name "nnimap."
302 "NOV cache base filename.
303 The group name and `nnimap-nov-file-name-suffix' will be appended. A
304 typical complete file name would be
305 ~/News/overview/nnimap.pdc.INBOX.ding.nov, or
306 ~/News/overview/nnimap/pdc/INBOX/ding/nov if
307 `nnmail-use-long-file-names' is nil")
309 (defvoo nnimap-nov-file-name-suffix ".novcache"
310 "Suffix for NOV cache base filename.")
312 (defvoo nnimap-nov-is-evil gnus-agent
313 "If non-nil, never generate or use a local nov database for this backend.
314 Using nov databases should speed up header fetching considerably.
315 However, it will invoke a UID SEARCH UID command on the server, and
316 some servers implement this command inefficiently by opening each and
317 every message in the group, thus making it quite slow.
318 Unlike other backends, you do not need to take special care if you
319 flip this variable.")
321 (defvoo nnimap-expunge-on-close 'always ; 'ask, 'never
322 "Whether to expunge a group when it is closed.
323 When a IMAP group with articles marked for deletion is closed, this
324 variable determine if nnimap should actually remove the articles or
327 If always, nnimap always perform a expunge when closing the group.
328 If never, nnimap never expunges articles marked for deletion.
329 If ask, nnimap will ask you if you wish to expunge marked articles.
331 When setting this variable to `never', you can only expunge articles
332 by using `G x' (gnus-group-nnimap-expunge) from the Group buffer.")
334 (defvoo nnimap-list-pattern "*"
335 "A string LIMIT or list of strings with mailbox wildcards used to limit available groups.
336 See below for available wildcards.
338 The LIMIT string can be a cons cell (REFERENCE . LIMIT), where
339 REFERENCE will be passed as the first parameter to LIST/LSUB. The
340 semantics of this are server specific, on the University of Washington
341 server you can specify a directory.
344 '(\"INBOX\" \"mail/*\" (\"~friend/mail/\" . \"list/*\"))
346 There are two wildcards * and %. * matches everything, % matches
347 everything in the current hierarchy.")
349 (defvoo nnimap-news-groups nil
350 "IMAP support a news-like mode, also known as bulletin board mode,
351 where replies is sent via IMAP instead of SMTP.
353 This variable should contain a regexp matching groups where you wish
354 replies to be stored to the mailbox directly.
357 '(\"^[^I][^N][^B][^O][^X].*$\")
359 This will match all groups not beginning with \"INBOX\".
361 Note that there is nothing technically different between mail-like and
362 news-like mailboxes. If you wish to have a group with todo items or
363 similar which you wouldn't want to set up a mailing list for, you can
364 use this to make replies go directly to the group.")
366 (defvoo nnimap-expunge-search-string "UID %s NOT SINCE %s"
367 "IMAP search command to use for articles that are to be expired.
368 The first %s is replaced by a UID set of articles to search on,
369 and the second %s is replaced by a date criterium.
371 One useful (and perhaps the only useful) value to change this to would
372 be `UID %s NOT SENTSINCE %s' to make nnimap use the Date: header
373 instead of the internal date of messages. See section 6.4.4 of RFC
374 2060 for more information on valid strings.")
376 (defvoo nnimap-importantize-dormant t
377 "If non-nil, mark \"dormant\" articles as \"ticked\" for other IMAP clients.
378 Note that within Gnus, dormant articles will still (only) be
379 marked as ticked. This is to make \"dormant\" articles stand out,
380 just like \"ticked\" articles, in other IMAP clients.")
382 (defvoo nnimap-server-address nil
383 "Obsolete. Use `nnimap-address'.")
385 (defcustom nnimap-authinfo-file "~/.authinfo"
386 "Authorization information for IMAP servers. In .netrc format."
389 (repeat :tag "Entries"
392 :value ("" ("login" . "") ("password" . ""))
396 (const :format "" "login")
397 (string :format "Login: %v"))
399 (const :format "" "password")
400 (string :format "Password: %v"))))))
403 (defcustom nnimap-prune-cache t
404 "If non-nil, nnimap check whether articles still exist on server before using data stored in NOV cache."
408 (defvar nnimap-request-list-method 'imap-mailbox-list
409 "Method to use to request a list of all folders from the server.
410 If this is 'imap-mailbox-lsub, then use a server-side subscription list to
411 restrict visible folders.")
413 (defcustom nnimap-id nil
414 "Plist with client identity to send to server upon login.
415 Nil means no information is sent, symbol `no' to disable ID query
416 alltogheter, or plist with identifier-value pairs to send to
417 server. RFC 2971 describes the list as follows:
419 Any string may be sent as a field, but the following are defined to
420 describe certain values that might be sent. Implementations are free
421 to send none, any, or all of these. Strings are not case-sensitive.
422 Field strings MUST NOT be longer than 30 octets. Value strings MUST
423 NOT be longer than 1024 octets. Implementations MUST NOT send more
424 than 30 field-value pairs.
426 name Name of the program
427 version Version number of the program
428 os Name of the operating system
429 os-version Version of the operating system
430 vendor Vendor of the client/server
431 support-url URL to contact for support
432 address Postal address of contact/vendor
433 date Date program was released, specified as a date-time
435 command Command used to start the program
436 arguments Arguments supplied on the command line, if any
438 environment Description of environment, i.e., UNIX environment
439 variables or Windows registry settings
441 Implementations MUST NOT send the same field name more than once.
443 An example plist would be '(\"name\" \"Gnus\" \"version\" gnus-version-number
444 \"os\" system-configuration \"vendor\" \"GNU\")."
446 :type '(choice (const :tag "No information" nil)
447 (const :tag "Disable ID query" no)
448 (plist :key-type string :value-type string)))
450 (defcustom nnimap-debug nil
451 "If non-nil, random debug spews are placed in *nnimap-debug* buffer.
452 Note that username, passwords and other privacy sensitive
453 information (such as e-mail) may be stored in the *nnimap-debug*
454 buffer. It is not written to disk, however. Do not enable this
455 variable unless you are comfortable with that."
459 ;; Internal variables:
461 (defvar nnimap-debug-buffer "*nnimap-debug*")
462 (defvar nnimap-mailbox-info (gnus-make-hashtable 997))
463 (defvar nnimap-current-move-server nil)
464 (defvar nnimap-current-move-group nil)
465 (defvar nnimap-current-move-article nil)
466 (defvar nnimap-length)
467 (defvar nnimap-progress-chars '(?| ?/ ?- ?\\))
468 (defvar nnimap-progress-how-often 20)
469 (defvar nnimap-counter)
470 (defvar nnimap-server-buffer-alist nil) ;; Map server name to buffers.
471 (defvar nnimap-current-server nil) ;; Current server
472 (defvar nnimap-server-buffer nil) ;; Current servers' buffer
476 (nnoo-define-basics nnimap)
478 ;; Utility functions:
480 (defsubst nnimap-get-server-buffer (server)
481 "Return buffer for SERVER, if nil use current server."
482 (cadr (assoc (or server nnimap-current-server) nnimap-server-buffer-alist)))
484 (defun nnimap-remove-server-from-buffer-alist (server list)
485 "Remove SERVER from LIST."
488 (unless (equal server (car-safe e))
492 (defun nnimap-possibly-change-server (server)
493 "Return buffer for SERVER, changing the current server as a side-effect.
494 If SERVER is nil, uses the current server."
495 (setq nnimap-current-server (or server nnimap-current-server)
496 nnimap-server-buffer (nnimap-get-server-buffer nnimap-current-server)))
498 (defun nnimap-verify-uidvalidity (group server)
499 "Verify stored uidvalidity match current one in GROUP on SERVER."
500 (let* ((gnusgroup (gnus-group-prefixed-name
501 group (gnus-server-to-method
502 (format "nnimap:%s" server))))
503 (new-uidvalidity (imap-mailbox-get 'uidvalidity))
504 (old-uidvalidity (gnus-group-get-parameter gnusgroup 'uidvalidity))
505 (dir (file-name-as-directory (expand-file-name nnimap-directory)))
506 (nameuid (nnheader-translate-file-chars
507 (concat nnimap-nov-file-name
508 (if (equal server "")
510 server) "." group "." old-uidvalidity
511 nnimap-nov-file-name-suffix) t))
512 (file (if (or nnmail-use-long-file-names
513 (file-exists-p (expand-file-name nameuid dir)))
514 (expand-file-name nameuid dir)
516 (encode-coding-string
517 (nnheader-replace-chars-in-string nameuid ?. ?/)
518 nnmail-pathname-coding-system)
521 (if (not (equal old-uidvalidity new-uidvalidity))
523 (gnus-delete-file file)
524 (gnus-group-set-parameter gnusgroup 'uidvalidity new-uidvalidity)
526 (gnus-group-add-parameter gnusgroup (cons 'uidvalidity new-uidvalidity))
529 (defun nnimap-before-find-minmax-bugworkaround ()
530 "Function called before iterating through mailboxes with
531 `nnimap-find-minmax-uid'."
532 (when nnimap-need-unselect-to-notice-new-mail
533 ;; XXX this is for UoW imapd problem, it doesn't notice new mail in
534 ;; currently selected mailbox without a re-select/examine.
535 (or (null (imap-current-mailbox nnimap-server-buffer))
536 (imap-mailbox-unselect nnimap-server-buffer))))
538 (defun nnimap-find-minmax-uid (group &optional examine)
539 "Find lowest and highest active article number in GROUP.
540 If EXAMINE is non-nil the group is selected read-only."
541 (with-current-buffer nnimap-server-buffer
542 (when (or (string= group (imap-current-mailbox))
543 (imap-mailbox-select group examine))
545 (when (> (imap-mailbox-get 'exists) 0)
546 (imap-fetch "1,*" "UID" nil 'nouidfetch)
547 (imap-message-map (lambda (uid Uid)
548 (setq minuid (if minuid (min minuid uid) uid)
549 maxuid (if maxuid (max maxuid uid) uid)))
551 (list (imap-mailbox-get 'exists) minuid maxuid)))))
553 (defun nnimap-possibly-change-group (group &optional server)
554 "Make GROUP the current group, and SERVER the current server."
555 (when (nnimap-possibly-change-server server)
556 (with-current-buffer nnimap-server-buffer
557 (if (or (null group) (imap-current-mailbox-p group))
559 (if (imap-mailbox-select group)
560 (if (or (nnimap-verify-uidvalidity
561 group (or server nnimap-current-server))
562 (zerop (imap-mailbox-get 'exists group))
563 t ;; for OGnus to see if ignoring uidvalidity
564 ;; changes has any bad effects.
567 "nnimap: Group %s is not uidvalid. Continue? " group)))
569 (imap-mailbox-unselect)
570 (error "nnimap: Group %s is not uid-valid" group))
571 (nnheader-report 'nnimap (imap-error-text)))))))
573 (defun nnimap-replace-whitespace (string)
574 "Return STRING with all whitespace replaced with space."
576 (while (string-match "[\r\n\t]+" string)
577 (setq string (replace-match " " t t string)))
580 ;; Required backend functions
582 (defun nnimap-retrieve-headers-progress ()
583 "Hook to insert NOV line for current article into `nntp-server-buffer'."
584 (and (numberp nnmail-large-newsgroup)
585 (zerop (% (incf nnimap-counter) nnimap-progress-how-often))
586 (> nnimap-length nnmail-large-newsgroup)
587 (nnheader-message 6 "nnimap: Retrieving headers... %c"
588 (nth (/ (% nnimap-counter
589 (* (length nnimap-progress-chars)
590 nnimap-progress-how-often))
591 nnimap-progress-how-often)
592 nnimap-progress-chars)))
593 (with-current-buffer nntp-server-buffer
594 (let (headers lines chars uid mbx)
595 (with-current-buffer nnimap-server-buffer
596 (setq uid imap-current-message
597 mbx imap-current-mailbox
598 headers (nnimap-demule
599 (if (imap-capability 'IMAP4rev1)
600 ;; xxx don't just use car? alist doesn't contain
601 ;; anything else now, but it might...
602 (nth 2 (car (imap-message-get uid 'BODYDETAIL)))
603 (imap-message-get uid 'RFC822.HEADER)))
604 lines (imap-body-lines (imap-message-body imap-current-message))
605 chars (imap-message-get imap-current-message 'RFC822.SIZE)))
608 (buffer-disable-undo)
610 (let ((head (nnheader-parse-naked-head uid)))
611 (mail-header-set-number head uid)
612 (mail-header-set-chars head chars)
613 (mail-header-set-lines head lines)
614 (mail-header-set-xref
615 head (format "%s %s:%d" (system-name) mbx uid))
618 (defun nnimap-retrieve-which-headers (articles fetch-old)
619 "Get a range of articles to fetch based on ARTICLES and FETCH-OLD."
620 (with-current-buffer nnimap-server-buffer
621 (if (numberp (car-safe articles))
624 (imap-range-to-message-set
625 (gnus-compress-sequence
626 (append (gnus-uncompress-sequence
628 (cons (if (numberp fetch-old)
629 (max 1 (- (car articles) fetch-old))
631 (1- (car articles)))))
633 (mapcar (lambda (msgid)
635 (format "HEADER Message-Id \"%s\"" msgid)))
638 (defun nnimap-group-overview-filename (group server)
639 "Make file name for GROUP on SERVER."
640 (let* ((dir (file-name-as-directory (expand-file-name nnimap-directory)))
641 (uidvalidity (gnus-group-get-parameter
642 (gnus-group-prefixed-name
643 group (gnus-server-to-method
644 (format "nnimap:%s" server)))
646 (name (nnheader-translate-file-chars
647 (concat nnimap-nov-file-name
648 (if (equal server "")
650 server) "." group nnimap-nov-file-name-suffix) t))
651 (nameuid (nnheader-translate-file-chars
652 (concat nnimap-nov-file-name
653 (if (equal server "")
655 server) "." group "." uidvalidity
656 nnimap-nov-file-name-suffix) t))
657 (oldfile (if (or nnmail-use-long-file-names
658 (file-exists-p (expand-file-name name dir)))
659 (expand-file-name name dir)
661 (encode-coding-string
662 (nnheader-replace-chars-in-string name ?. ?/)
663 nnmail-pathname-coding-system)
665 (newfile (if (or nnmail-use-long-file-names
666 (file-exists-p (expand-file-name nameuid dir)))
667 (expand-file-name nameuid dir)
669 (encode-coding-string
670 (nnheader-replace-chars-in-string nameuid ?. ?/)
671 nnmail-pathname-coding-system)
673 (when (and (file-exists-p oldfile) (not (file-exists-p newfile)))
674 (message "nnimap: Upgrading novcache filename...")
676 (gnus-make-directory (file-name-directory newfile))
677 (unless (ignore-errors (rename-file oldfile newfile) t)
678 (if (ignore-errors (copy-file oldfile newfile) t)
679 (delete-file oldfile)
680 (error "Can't rename `%s' to `%s'" oldfile newfile))))
683 (defun nnimap-retrieve-headers-from-file (group server)
684 (with-current-buffer nntp-server-buffer
685 (let ((nov (nnimap-group-overview-filename group server)))
686 (when (file-exists-p nov)
687 (nnheader-insert-file-contents nov)
688 (set-buffer-modified-p nil)
689 (let ((min (ignore-errors (goto-char (point-min))
690 (read (current-buffer))))
691 (max (ignore-errors (goto-char (point-max))
693 (read (current-buffer)))))
694 (if (and (numberp min) (numberp max))
696 ;; junk, remove it, it's saved later
700 (defun nnimap-retrieve-headers-from-server (articles group server)
701 (with-current-buffer nnimap-server-buffer
702 (let ((imap-fetch-data-hook '(nnimap-retrieve-headers-progress))
703 (nnimap-length (gnus-range-length articles))
705 (imap-fetch (imap-range-to-message-set articles)
706 (concat "(UID RFC822.SIZE BODY "
708 (append '(Subject From Date Message-Id
709 References In-Reply-To Xref)
711 nnmail-extra-headers))))
712 (if (imap-capability 'IMAP4rev1)
713 (format "BODY.PEEK[HEADER.FIELDS %s])" headers)
714 (format "RFC822.HEADER.LINES %s)" headers)))))
715 (with-current-buffer nntp-server-buffer
716 (sort-numeric-fields 1 (point-min) (point-max)))
717 (and (numberp nnmail-large-newsgroup)
718 (> nnimap-length nnmail-large-newsgroup)
719 (nnheader-message 6 "nnimap: Retrieving headers...done")))))
721 (defun nnimap-dont-use-nov-p (group server)
722 (or gnus-nov-is-evil nnimap-nov-is-evil
723 (unless (and (gnus-make-directory
725 (nnimap-group-overview-filename group server)))
727 (nnimap-group-overview-filename group server)))
728 (message "nnimap: Nov cache not writable, %s"
729 (nnimap-group-overview-filename group server)))))
731 (deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
732 (when (nnimap-possibly-change-group group server)
733 (with-current-buffer nntp-server-buffer
735 (if (nnimap-dont-use-nov-p group server)
736 (nnimap-retrieve-headers-from-server
737 (gnus-compress-sequence articles) group server)
738 (let (uids cached low high)
739 (when (setq uids (nnimap-retrieve-which-headers articles fetch-old)
741 high (car (last uids)))
742 (if (setq cached (nnimap-retrieve-headers-from-file group server))
744 ;; fetch articles with uids before cache block
745 (when (< low (car cached))
746 (goto-char (point-min))
747 (nnimap-retrieve-headers-from-server
748 (cons low (1- (car cached))) group server))
749 ;; fetch articles with uids after cache block
750 (when (> high (cdr cached))
751 (goto-char (point-max))
752 (nnimap-retrieve-headers-from-server
753 (cons (1+ (cdr cached)) high) group server))
754 (when nnimap-prune-cache
755 ;; remove nov's for articles which has expired on server
756 (goto-char (point-min))
757 (dolist (uid (gnus-set-difference articles uids))
758 (when (re-search-forward (format "^%d\t" uid) nil t)
759 (gnus-delete-line)))))
760 ;; nothing cached, fetch whole range from server
761 (nnimap-retrieve-headers-from-server
762 (cons low high) group server))
763 (when (buffer-modified-p)
765 (point-min) (point-max)
766 (nnimap-group-overview-filename group server) nil 'nomesg))
767 (nnheader-nov-delete-outside-range low high))))
770 (defun nnimap-open-connection (server)
771 (if (not (imap-open nnimap-address nnimap-server-port nnimap-stream
772 nnimap-authenticator nnimap-server-buffer))
773 (nnheader-report 'nnimap "Can't open connection to server %s" server)
774 (unless (or (imap-capability 'IMAP4 nnimap-server-buffer)
775 (imap-capability 'IMAP4rev1 nnimap-server-buffer))
776 (imap-close nnimap-server-buffer)
777 (nnheader-report 'nnimap "Server %s is not IMAP4 compliant" server))
778 (let* ((list (progn (gnus-message 7 "Parsing authinfo file `%s'."
779 nnimap-authinfo-file)
780 (netrc-parse nnimap-authinfo-file)))
781 (port (if nnimap-server-port
782 (int-to-string nnimap-server-port)
784 (user (netrc-machine-user-or-password
788 (or nnimap-server-address
791 (list "imap" "imaps")))
792 (passwd (netrc-machine-user-or-password
796 (or nnimap-server-address
799 (list "imap" "imaps"))))
800 (if (imap-authenticate user passwd nnimap-server-buffer)
802 (setq nnimap-server-buffer-alist
803 (nnimap-remove-server-from-buffer-alist
805 nnimap-server-buffer-alist))
806 (push (list server nnimap-server-buffer)
807 nnimap-server-buffer-alist)
808 (imap-id nnimap-id nnimap-server-buffer)
809 (nnimap-possibly-change-server server))
810 (imap-close nnimap-server-buffer)
811 (kill-buffer nnimap-server-buffer)
812 (nnheader-report 'nnimap "Could not authenticate to %s" server)))))
814 (deffoo nnimap-open-server (server &optional defs)
815 (nnheader-init-server-buffer)
816 (if (nnimap-server-opened server)
818 (unless (assq 'nnimap-server-buffer defs)
819 (push (list 'nnimap-server-buffer (concat " *nnimap* " server)) defs))
820 ;; translate `nnimap-server-address' to `nnimap-address' in defs
821 ;; for people that configured nnimap with a very old version
822 (unless (assq 'nnimap-address defs)
823 (if (assq 'nnimap-server-address defs)
824 (push (list 'nnimap-address
825 (cadr (assq 'nnimap-server-address defs))) defs)
826 (push (list 'nnimap-address server) defs)))
827 (nnoo-change-server 'nnimap server defs)
828 (or nnimap-server-buffer
829 (setq nnimap-server-buffer (cadr (assq 'nnimap-server-buffer defs))))
830 (with-current-buffer (get-buffer-create nnimap-server-buffer)
831 (nnoo-change-server 'nnimap server defs))
832 (or (and nnimap-server-buffer
833 (imap-opened nnimap-server-buffer)
834 (if (with-current-buffer nnimap-server-buffer
835 (memq imap-state '(auth selected examine)))
837 (imap-close nnimap-server-buffer)
838 (nnimap-open-connection server)))
839 (nnimap-open-connection server))))
841 (deffoo nnimap-server-opened (&optional server)
842 "Whether SERVER is opened.
843 If SERVER is the current virtual server, and the connection to the
844 physical server is alive, this function return a non-nil value. If
845 SERVER is nil, it is treated as the current server."
846 ;; clean up autologouts??
847 (and (or server nnimap-current-server)
848 (nnoo-server-opened 'nnimap (or server nnimap-current-server))
849 (imap-opened (nnimap-get-server-buffer server))))
851 (deffoo nnimap-close-server (&optional server)
852 "Close connection to server and free all resources connected to it.
853 Return nil if the server couldn't be closed for some reason."
854 (let ((server (or server nnimap-current-server)))
855 (when (or (nnimap-server-opened server)
856 (imap-opened (nnimap-get-server-buffer server)))
857 (imap-close (nnimap-get-server-buffer server))
858 (kill-buffer (nnimap-get-server-buffer server))
859 (setq nnimap-server-buffer nil
860 nnimap-current-server nil
861 nnimap-server-buffer-alist
862 (nnimap-remove-server-from-buffer-alist
864 nnimap-server-buffer-alist)))
865 (nnoo-close-server 'nnimap server)))
867 (deffoo nnimap-request-close ()
868 "Close connection to all servers and free all resources that the backend have reserved.
869 All buffers that have been created by that
870 backend should be killed. (Not the nntp-server-buffer, though.) This
871 function is generally only called when Gnus is shutting down."
872 (mapc (lambda (server) (nnimap-close-server (car server)))
873 nnimap-server-buffer-alist)
874 (setq nnimap-server-buffer-alist nil))
876 (deffoo nnimap-status-message (&optional server)
877 "This function returns the last error message from server."
878 (when (nnimap-possibly-change-server server)
879 (nnoo-status-message 'nnimap server)))
881 (defun nnimap-demule (string)
882 ;; BEWARE: we used to use string-as-multibyte here which is braindead
883 ;; because it will turn accidental emacs-mule-valid byte sequences
884 ;; into multibyte chars. --Stef
885 ;; Reverted, braindead got 7.5 out of 10 on imdb, so it can't be
887 (funcall (if (and (fboundp 'string-as-multibyte)
888 (subrp (symbol-function 'string-as-multibyte)))
893 (defun nnimap-make-callback (article gnus-callback buffer)
894 "Return a callback function."
896 (nnimap-callback ,article ,gnus-callback ,buffer)))
898 (defun nnimap-callback (article gnus-callback buffer)
899 (when (eq article (imap-current-message))
900 (remove-hook 'imap-fetch-data-hook
901 (nnimap-make-callback article gnus-callback buffer))
902 (with-current-buffer buffer
904 (with-current-buffer nnimap-server-buffer
906 (if (imap-capability 'IMAP4rev1)
907 ;; xxx don't just use car? alist doesn't contain
908 ;; anything else now, but it might...
909 (nth 2 (car (imap-message-get article 'BODYDETAIL)))
910 (imap-message-get article 'RFC822)))))
911 (nnheader-ms-strip-cr)
912 (funcall gnus-callback t))))
914 (defun nnimap-request-article-part (article part prop &optional
915 group server to-buffer detail)
916 (when (nnimap-possibly-change-group group server)
917 (let ((article (if (stringp article)
918 (car-safe (imap-search
919 (format "HEADER Message-Id \"%s\"" article)
920 nnimap-server-buffer))
923 (gnus-message 10 "nnimap: Fetching (part of) article %d from %s..."
924 article (or group imap-current-mailbox
925 gnus-newsgroup-name))
926 (if (not nnheader-callback-function)
927 (with-current-buffer (or to-buffer nntp-server-buffer)
929 (let ((data (imap-fetch article part prop nil
930 nnimap-server-buffer)))
932 (insert (nnimap-demule (if detail (nth 2 (car data)) data)))
933 (nnheader-ms-strip-cr)
935 10 "nnimap: Fetching (part of) article %d from %s...done"
936 article (or group imap-current-mailbox gnus-newsgroup-name))
938 (nnheader-report 'nnimap "No such article %d in %s: %s"
939 article (or group imap-current-mailbox
941 (imap-error-text nnimap-server-buffer))
942 (cons group article)))))
943 (add-hook 'imap-fetch-data-hook
944 (nnimap-make-callback article
945 nnheader-callback-function
947 (imap-fetch-asynch article part nil nnimap-server-buffer)
948 (cons group article))))))
950 (deffoo nnimap-asynchronous-p ()
953 (deffoo nnimap-request-article (article &optional group server to-buffer)
954 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
955 (nnimap-request-article-part
956 article "BODY.PEEK[]" 'BODYDETAIL group server to-buffer 'detail)
957 (nnimap-request-article-part
958 article "RFC822.PEEK" 'RFC822 group server to-buffer)))
960 (deffoo nnimap-request-head (article &optional group server to-buffer)
961 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
962 (nnimap-request-article-part
963 article "BODY.PEEK[HEADER]" 'BODYDETAIL group server to-buffer 'detail)
964 (nnimap-request-article-part
965 article "RFC822.HEADER" 'RFC822.HEADER group server to-buffer)))
967 (deffoo nnimap-request-body (article &optional group server to-buffer)
968 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
969 (nnimap-request-article-part
970 article "BODY.PEEK[TEXT]" 'BODYDETAIL group server to-buffer 'detail)
971 (nnimap-request-article-part
972 article "RFC822.TEXT.PEEK" 'RFC822.TEXT group server to-buffer)))
974 (deffoo nnimap-request-group (group &optional server fast)
975 (nnimap-request-update-info-internal
977 (gnus-get-info (gnus-group-prefixed-name
978 group (gnus-server-to-method (format "nnimap:%s" server))))
980 (when (nnimap-possibly-change-group group server)
981 (nnimap-before-find-minmax-bugworkaround)
984 ((null (setq info (nnimap-find-minmax-uid group t)))
985 (nnheader-report 'nnimap "Could not get active info for %s"
988 (nnheader-insert "211 %d %d %d %s\n" (or (nth 0 info) 0)
989 (max 1 (or (nth 1 info) 1))
990 (or (nth 2 info) 0) group)
991 (nnheader-report 'nnimap "Group %s selected" group)
994 (defun nnimap-update-unseen (group &optional server)
995 "Update the unseen count in `nnimap-mailbox-info'."
997 (gnus-group-prefixed-name group server)
998 (let ((old (gnus-gethash-safe (gnus-group-prefixed-name group server)
999 nnimap-mailbox-info)))
1000 (list (nth 0 old) (nth 1 old)
1001 (imap-mailbox-status group 'unseen nnimap-server-buffer)
1003 nnimap-mailbox-info))
1005 (defun nnimap-close-group (group &optional server)
1006 (with-current-buffer nnimap-server-buffer
1007 (when (and (imap-opened)
1008 (nnimap-possibly-change-group group server))
1009 (nnimap-update-unseen group server)
1010 (case nnimap-expunge-on-close
1012 (imap-mailbox-expunge nnimap-close-asynchronous)
1013 (unless nnimap-dont-close
1014 (imap-mailbox-close nnimap-close-asynchronous))))
1015 (ask (if (and (imap-search "DELETED")
1016 (gnus-y-or-n-p (format "Expunge articles in group `%s'? "
1017 imap-current-mailbox)))
1019 (imap-mailbox-expunge nnimap-close-asynchronous)
1020 (unless nnimap-dont-close
1021 (imap-mailbox-close nnimap-close-asynchronous)))
1022 (imap-mailbox-unselect)))
1023 (t (imap-mailbox-unselect)))
1024 (not imap-current-mailbox))))
1026 (defun nnimap-pattern-to-list-arguments (pattern)
1028 (cons (car-safe p) (or (cdr-safe p) p)))
1029 (if (and (listp pattern)
1030 (listp (cdr pattern)))
1034 (deffoo nnimap-request-list (&optional server)
1035 (when (nnimap-possibly-change-server server)
1036 (with-current-buffer nntp-server-buffer
1038 (gnus-message 5 "nnimap: Generating active list%s..."
1039 (if (> (length server) 0) (concat " for " server) ""))
1040 (nnimap-before-find-minmax-bugworkaround)
1041 (with-current-buffer nnimap-server-buffer
1042 (dolist (pattern (nnimap-pattern-to-list-arguments nnimap-list-pattern))
1043 (dolist (mbx (funcall nnimap-request-list-method
1044 (cdr pattern) (car pattern)))
1045 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags mbx))
1046 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1048 (with-current-buffer nntp-server-buffer
1049 (insert (format "\"%s\" %d %d y\n"
1050 mbx (or (nth 2 info) 0)
1051 (max 1 (or (nth 1 info) 1)))))))))))
1052 (gnus-message 5 "nnimap: Generating active list%s...done"
1053 (if (> (length server) 0) (concat " for " server) ""))
1056 (deffoo nnimap-request-post (&optional server)
1058 (dolist (mbx (message-unquote-tokens
1059 (message-tokenize-header
1060 (message-fetch-field "Newsgroups") ", ")) success)
1061 (let ((to-newsgroup (gnus-group-prefixed-name mbx gnus-command-method)))
1062 (or (gnus-active to-newsgroup)
1063 (gnus-activate-group to-newsgroup)
1064 (if (gnus-y-or-n-p (format "No such group: %s. Create it? "
1066 (or (and (gnus-request-create-group
1067 to-newsgroup gnus-command-method)
1068 (gnus-activate-group to-newsgroup nil nil
1069 gnus-command-method))
1070 (error "Couldn't create group %s" to-newsgroup)))
1071 (error "No such group: %s" to-newsgroup))
1072 (unless (nnimap-request-accept-article mbx (nth 1 gnus-command-method))
1073 (setq success nil))))))
1075 ;; Optional backend functions
1077 (defun nnimap-string-lessp-numerical (s1 s2)
1078 "Return t if first arg string is less than second in numerical order."
1079 (cond ((string= s1 s2)
1081 ((> (length s1) (length s2))
1083 ((< (length s1) (length s2))
1085 ((< (string-to-number (substring s1 0 1))
1086 (string-to-number (substring s2 0 1)))
1088 ((> (string-to-number (substring s1 0 1))
1089 (string-to-number (substring s2 0 1)))
1092 (nnimap-string-lessp-numerical (substring s1 1) (substring s2 1)))))
1094 (deffoo nnimap-retrieve-groups (groups &optional server)
1095 (when (nnimap-possibly-change-server server)
1096 (gnus-message 5 "nnimap: Checking mailboxes...")
1097 (with-current-buffer nntp-server-buffer
1099 (nnimap-before-find-minmax-bugworkaround)
1100 (let (asyncgroups slowgroups)
1101 (if (null nnimap-retrieve-groups-asynchronous)
1102 (setq slowgroups groups)
1103 (dolist (group groups)
1104 (gnus-message 9 "nnimap: Quickly checking mailbox %s" group)
1105 (add-to-list (if (gnus-gethash-safe
1106 (gnus-group-prefixed-name group server)
1107 nnimap-mailbox-info)
1110 (list group (imap-mailbox-status-asynch
1111 group '(uidvalidity uidnext unseen)
1112 nnimap-server-buffer))))
1113 (dolist (asyncgroup asyncgroups)
1114 (let ((group (nth 0 asyncgroup))
1115 (tag (nth 1 asyncgroup))
1117 (when (imap-ok-p (imap-wait-for-tag tag nnimap-server-buffer))
1118 (if (or (not (string=
1119 (nth 0 (gnus-gethash (gnus-group-prefixed-name
1121 nnimap-mailbox-info))
1122 (imap-mailbox-get 'uidvalidity group
1123 nnimap-server-buffer)))
1125 (nth 1 (gnus-gethash (gnus-group-prefixed-name
1127 nnimap-mailbox-info))
1128 (imap-mailbox-get 'uidnext group
1129 nnimap-server-buffer))))
1130 (push (list group) slowgroups)
1131 (insert (nth 3 (gnus-gethash (gnus-group-prefixed-name
1133 nnimap-mailbox-info))))))))
1134 (dolist (group slowgroups)
1135 (if nnimap-retrieve-groups-asynchronous
1136 (setq group (car group)))
1137 (gnus-message 7 "nnimap: Mailbox %s modified" group)
1138 (imap-mailbox-put 'uidnext nil group nnimap-server-buffer)
1139 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags group
1140 nnimap-server-buffer))
1141 (let* ((info (nnimap-find-minmax-uid group 'examine))
1142 (str (format "\"%s\" %d %d y\n" group
1144 (max 1 (or (nth 1 info) 1)))))
1145 (when (> (or (imap-mailbox-get 'recent group
1146 nnimap-server-buffer) 0)
1148 (push (list (cons group 0)) nnmail-split-history))
1150 (when nnimap-retrieve-groups-asynchronous
1152 (gnus-group-prefixed-name group server)
1153 (list (or (imap-mailbox-get
1154 'uidvalidity group nnimap-server-buffer)
1155 (imap-mailbox-status
1156 group 'uidvalidity nnimap-server-buffer))
1157 (or (imap-mailbox-get
1158 'uidnext group nnimap-server-buffer)
1159 (imap-mailbox-status
1160 group 'uidnext nnimap-server-buffer))
1161 (or (imap-mailbox-get
1162 'unseen group nnimap-server-buffer)
1163 (imap-mailbox-status
1164 group 'unseen nnimap-server-buffer))
1166 nnimap-mailbox-info)))))))
1167 (gnus-message 5 "nnimap: Checking mailboxes...done")
1170 (deffoo nnimap-request-update-info-internal (group info &optional server)
1171 (when (nnimap-possibly-change-group group server)
1172 (when info;; xxx what does this mean? should we create a info?
1173 (with-current-buffer nnimap-server-buffer
1174 (gnus-message 5 "nnimap: Updating info for %s..."
1175 (gnus-info-group info))
1177 (when (nnimap-mark-permanent-p 'read)
1179 ;; read info could contain articles marked unread by other
1180 ;; imap clients! we correct this
1181 (setq seen (gnus-uncompress-range (gnus-info-read info))
1182 unseen (imap-search "UNSEEN UNDELETED")
1183 seen (gnus-set-difference seen unseen)
1184 ;; seen might lack articles marked as read by other
1185 ;; imap clients! we correct this
1186 seen (append seen (imap-search "SEEN"))
1189 seen (gnus-compress-sequence seen t)
1190 ;; we can't return '(1) since this isn't a "list of ranges",
1191 ;; and we can't return '((1)) since g-list-of-unread-articles
1192 ;; is buggy so we return '((1 . 1)).
1193 seen (if (and (integerp (car seen))
1195 (list (cons (car seen) (car seen)))
1197 (gnus-info-set-read info seen)))
1199 (mapcar (lambda (pred)
1200 (when (or (eq (cdr pred) 'recent)
1201 (and (nnimap-mark-permanent-p (cdr pred))
1202 (member (nnimap-mark-to-flag (cdr pred))
1203 (imap-mailbox-get 'flags))))
1204 (gnus-info-set-marks
1206 (gnus-update-alist-soft
1208 (gnus-compress-sequence
1209 (imap-search (nnimap-mark-to-predicate (cdr pred))))
1210 (gnus-info-marks info))
1212 gnus-article-mark-lists)
1214 (when nnimap-importantize-dormant
1215 ;; nnimap mark dormant article as ticked too (for other clients)
1216 ;; so we remove that mark for gnus since we support dormant
1217 (gnus-info-set-marks
1219 (gnus-update-alist-soft
1221 (gnus-remove-from-range
1222 (cdr-safe (assoc 'tick (gnus-info-marks info)))
1223 (cdr-safe (assoc 'dormant (gnus-info-marks info))))
1224 (gnus-info-marks info))
1227 (gnus-message 5 "nnimap: Updating info for %s...done"
1228 (gnus-info-group info))
1232 (deffoo nnimap-request-type (group &optional article)
1233 (if (and nnimap-news-groups (string-match nnimap-news-groups group))
1237 (deffoo nnimap-request-set-mark (group actions &optional server)
1238 (when (nnimap-possibly-change-group group server)
1239 (with-current-buffer nnimap-server-buffer
1241 (gnus-message 7 "nnimap: Setting marks in %s..." group)
1242 (while (setq action (pop actions))
1243 (let ((range (nth 0 action))
1244 (what (nth 1 action))
1245 (cmdmarks (nth 2 action))
1247 ;; bookmark can't be stored (not list/range
1248 (setq cmdmarks (delq 'bookmark cmdmarks))
1249 ;; killed can't be stored (not list/range
1250 (setq cmdmarks (delq 'killed cmdmarks))
1251 ;; unsent are for nndraft groups only
1252 (setq cmdmarks (delq 'unsent cmdmarks))
1253 ;; cache flags are pointless on the server
1254 (setq cmdmarks (delq 'cache cmdmarks))
1255 ;; seen flags are local to each gnus
1256 (setq cmdmarks (delq 'seen cmdmarks))
1257 ;; recent marks can't be set
1258 (setq cmdmarks (delq 'recent cmdmarks))
1259 (when nnimap-importantize-dormant
1260 ;; flag dormant articles as ticked
1261 (if (memq 'dormant cmdmarks)
1262 (setq cmdmarks (cons 'tick cmdmarks))))
1263 ;; remove stuff we are forbidden to store
1264 (mapc (lambda (mark)
1265 (if (imap-message-flag-permanent-p
1266 (nnimap-mark-to-flag mark))
1267 (setq marks (cons mark marks))))
1269 (when (and range marks)
1270 (cond ((eq what 'del)
1271 (imap-message-flags-del
1272 (imap-range-to-message-set range)
1273 (nnimap-mark-to-flag marks nil t)))
1275 (imap-message-flags-add
1276 (imap-range-to-message-set range)
1277 (nnimap-mark-to-flag marks nil t)))
1279 (imap-message-flags-set
1280 (imap-range-to-message-set range)
1281 (nnimap-mark-to-flag marks nil t)))))))
1282 (gnus-message 7 "nnimap: Setting marks in %s...done" group))))
1285 (defun nnimap-split-fancy ()
1286 "Like the function `nnmail-split-fancy', but uses `nnimap-split-fancy'."
1287 (let ((nnmail-split-fancy nnimap-split-fancy))
1288 (nnmail-split-fancy)))
1290 (defun nnimap-split-to-groups (rules)
1291 ;; tries to match all rules in nnimap-split-rule against content of
1292 ;; nntp-server-buffer, returns a list of groups that matched.
1293 (with-current-buffer nntp-server-buffer
1294 ;; Fold continuation lines.
1295 (goto-char (point-min))
1296 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
1297 (replace-match " " t t))
1298 (if (functionp rules)
1300 (let (to-groups regrepp)
1302 (dolist (rule rules to-groups)
1303 (let ((group (car rule))
1304 (regexp (cadr rule)))
1305 (goto-char (point-min))
1306 (when (and (if (stringp regexp)
1308 (if (not (stringp group))
1309 (setq group (eval group))
1311 (string-match "\\\\[0-9&]" group)))
1312 (re-search-forward regexp nil t))
1313 (funcall regexp group))
1314 ;; Don't enter the article into the same group twice.
1315 (not (assoc group to-groups)))
1317 (nnmail-expand-newtext group)
1320 (or nnimap-split-crosspost
1321 (throw 'split-done to-groups))))))))))
1323 (defun nnimap-assoc-match (key alist)
1325 (while (and alist (not element))
1326 (if (string-match (car (car alist)) key)
1327 (setq element (car alist)))
1328 (setq alist (cdr alist)))
1331 (defun nnimap-split-find-rule (server inbox)
1332 (if (and (listp nnimap-split-rule) (listp (car nnimap-split-rule))
1333 (list (cdar nnimap-split-rule)) (listp (cadar nnimap-split-rule)))
1335 (cadr (nnimap-assoc-match inbox (cdr (nnimap-assoc-match
1336 server nnimap-split-rule))))
1339 (defun nnimap-split-find-inbox (server)
1340 (if (listp nnimap-split-inbox)
1342 (list nnimap-split-inbox)))
1344 (defun nnimap-split-articles (&optional group server)
1345 (when (nnimap-possibly-change-server server)
1346 (with-current-buffer nnimap-server-buffer
1347 (let (rule inbox removeorig (inboxes (nnimap-split-find-inbox server)))
1348 ;; iterate over inboxes
1349 (while (and (setq inbox (pop inboxes))
1350 (nnimap-possibly-change-group inbox));; SELECT
1351 ;; find split rule for this server / inbox
1352 (when (setq rule (nnimap-split-find-rule server inbox))
1353 ;; iterate over articles
1354 (dolist (article (imap-search nnimap-split-predicate))
1355 (when (if (if (eq nnimap-split-download-body 'default)
1356 nnimap-split-download-body-default
1357 nnimap-split-download-body)
1358 (and (nnimap-request-article article)
1359 (with-current-buffer nntp-server-buffer (mail-narrow-to-head)))
1360 (nnimap-request-head article))
1361 ;; copy article to right group(s)
1362 (setq removeorig nil)
1363 (dolist (to-group (nnimap-split-to-groups rule))
1364 (cond ((eq to-group 'junk)
1365 (message "IMAP split removed %s:%s:%d" server inbox
1367 (setq removeorig t))
1368 ((imap-message-copy (number-to-string article)
1369 to-group nil 'nocopyuid)
1370 (message "IMAP split moved %s:%s:%d to %s" server
1371 inbox article to-group)
1373 (when nnmail-cache-accepted-message-ids
1374 (with-current-buffer nntp-server-buffer
1377 (nnmail-fetch-field "message-id"))
1378 (nnmail-cache-insert msgid
1380 (nnmail-fetch-field "subject"))))))
1381 ;; Add the group-art list to the history list.
1382 (push (list (cons to-group 0)) nnmail-split-history))
1384 (message "IMAP split failed to move %s:%s:%d to %s"
1385 server inbox article to-group))))
1386 (if (if (eq nnimap-split-download-body 'default)
1387 nnimap-split-download-body-default
1388 nnimap-split-download-body)
1390 ;; remove article if it was successfully copied somewhere
1392 (imap-message-flags-add (format "%d" article)
1393 "\\Seen \\Deleted")))))
1394 (when (imap-mailbox-select inbox);; just in case
1395 ;; todo: UID EXPUNGE (if available) to remove splitted articles
1396 (imap-mailbox-expunge)
1397 (imap-mailbox-close)))
1398 (when nnmail-cache-accepted-message-ids
1399 (nnmail-cache-close))
1402 (deffoo nnimap-request-scan (&optional group server)
1403 (nnimap-split-articles group server))
1405 (deffoo nnimap-request-newgroups (date &optional server)
1406 (when (nnimap-possibly-change-server server)
1407 (with-current-buffer nntp-server-buffer
1408 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s..."
1409 (if (> (length server) 0) " on " "") server)
1411 (nnimap-before-find-minmax-bugworkaround)
1412 (dolist (pattern (nnimap-pattern-to-list-arguments
1413 nnimap-list-pattern))
1414 (dolist (mbx (imap-mailbox-lsub (cdr pattern) (car pattern) nil
1415 nnimap-server-buffer))
1417 (dolist (mailbox (imap-mailbox-get 'list-flags mbx
1418 nnimap-server-buffer))
1419 (if (string= (downcase mailbox) "\\noselect")
1422 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1424 (insert (format "\"%s\" %d %d y\n"
1425 mbx (or (nth 2 info) 0)
1426 (max 1 (or (nth 1 info) 1)))))))))
1427 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s...done"
1428 (if (> (length server) 0) " on " "") server))
1431 (deffoo nnimap-request-create-group (group &optional server args)
1432 (when (nnimap-possibly-change-server server)
1433 (or (imap-mailbox-status group 'uidvalidity nnimap-server-buffer)
1434 (imap-mailbox-create group nnimap-server-buffer)
1435 (nnheader-report 'nnimap "%S"
1436 (imap-error-text nnimap-server-buffer)))))
1438 (defun nnimap-time-substract (time1 time2)
1439 "Return TIME for TIME1 - TIME2."
1440 (let* ((ms (- (car time1) (car time2)))
1441 (ls (- (nth 1 time1) (nth 1 time2))))
1443 (list (- ms 1) (+ (expt 2 16) ls))
1446 (eval-when-compile (require 'parse-time))
1447 (defun nnimap-date-days-ago (daysago)
1448 "Return date, in format \"3-Aug-1998\", for DAYSAGO days ago."
1449 (require 'parse-time)
1450 (let* ((time (nnimap-time-substract (current-time) (days-to-time daysago)))
1451 (date (format-time-string
1452 (format "%%d-%s-%%Y"
1453 (capitalize (car (rassoc (nth 4 (decode-time time))
1454 parse-time-months))))
1456 (if (eq ?0 (string-to-char date))
1460 (defun nnimap-request-expire-articles-progress ()
1461 (gnus-message 5 "nnimap: Marking article %d for deletion..."
1462 imap-current-message))
1464 (defun nnimap-expiry-target (arts group server)
1465 (unless (eq nnmail-expiry-target 'delete)
1468 (nnimap-request-article art group server (current-buffer))
1469 ;; hints for optimization in `nnimap-request-accept-article'
1470 (let ((nnimap-current-move-article art)
1471 (nnimap-current-move-group group)
1472 (nnimap-current-move-server server))
1473 (nnmail-expiry-target-group nnmail-expiry-target group))))
1474 ;; It is not clear if `nnmail-expiry-target' somehow cause the
1475 ;; current group to be changed or not, so we make sure here.
1476 (nnimap-possibly-change-group group server)))
1478 ;; Notice that we don't actually delete anything, we just mark them deleted.
1479 (deffoo nnimap-request-expire-articles (articles group &optional server force)
1480 (let ((artseq (gnus-compress-sequence articles)))
1481 (when (and artseq (nnimap-possibly-change-group group server))
1482 (with-current-buffer nnimap-server-buffer
1483 (let ((days (or (and nnmail-expiry-wait-function
1484 (funcall nnmail-expiry-wait-function group))
1485 nnmail-expiry-wait)))
1486 (cond ((or force (eq days 'immediate))
1487 (let ((oldarts (imap-search
1489 (imap-range-to-message-set artseq)))))
1491 (nnimap-expiry-target oldarts group server)
1492 (when (imap-message-flags-add
1493 (imap-range-to-message-set
1494 (gnus-compress-sequence oldarts)) "\\Deleted")
1495 (setq articles (gnus-set-difference
1496 articles oldarts))))))
1498 (let ((oldarts (imap-search
1499 (format nnimap-expunge-search-string
1500 (imap-range-to-message-set artseq)
1501 (nnimap-date-days-ago days))))
1502 (imap-fetch-data-hook
1503 '(nnimap-request-expire-articles-progress)))
1505 (nnimap-expiry-target oldarts group server)
1506 (when (imap-message-flags-add
1507 (imap-range-to-message-set
1508 (gnus-compress-sequence oldarts)) "\\Deleted")
1509 (setq articles (gnus-set-difference
1510 articles oldarts)))))))))))
1511 ;; return articles not deleted
1514 (deffoo nnimap-request-move-article (article group server accept-form
1515 &optional last move-is-internal)
1516 (when (nnimap-possibly-change-server server)
1518 (let ((buf (get-buffer-create " *nnimap move*"))
1519 (nnimap-current-move-article article)
1520 (nnimap-current-move-group group)
1521 (nnimap-current-move-server nnimap-current-server)
1523 (gnus-message 10 "nnimap-request-move-article: this is an %s move"
1524 (if move-is-internal
1527 ;; request the article only when the move is NOT internal
1528 (and (or move-is-internal
1529 (nnimap-request-article article group server))
1532 (buffer-disable-undo (current-buffer))
1533 (insert-buffer-substring nntp-server-buffer)
1534 (setq result (eval accept-form))
1537 (imap-message-flags-add
1538 (imap-range-to-message-set (list article))
1539 "\\Deleted" 'silent nnimap-server-buffer))
1542 (deffoo nnimap-request-accept-article (group &optional server last)
1543 (when (nnimap-possibly-change-server server)
1546 (if (string= nnimap-current-server nnimap-current-move-server)
1547 ;; moving article within same server, speed it up...
1548 (and (nnimap-possibly-change-group
1549 nnimap-current-move-group)
1550 (imap-message-copy (number-to-string
1551 nnimap-current-move-article)
1552 group 'dontcreate nil
1553 nnimap-server-buffer))
1554 (with-current-buffer (current-buffer)
1555 (goto-char (point-min))
1556 ;; remove any 'From blabla' lines, some IMAP servers
1557 ;; reject the entire message otherwise.
1558 (when (looking-at "^From[^:]")
1559 (delete-region (point) (progn (forward-line) (point))))
1560 ;; turn into rfc822 format (\r\n eol's)
1561 (while (search-forward "\n" nil t)
1562 (replace-match "\r\n"))
1563 (when nnmail-cache-accepted-message-ids
1564 (nnmail-cache-insert (nnmail-fetch-field "message-id")
1566 (nnmail-fetch-field "subject"))))
1567 (when (and last nnmail-cache-accepted-message-ids)
1568 (nnmail-cache-close))
1569 ;; this 'or' is for Cyrus server bug
1570 (or (null (imap-current-mailbox nnimap-server-buffer))
1571 (imap-mailbox-unselect nnimap-server-buffer))
1572 (imap-message-append group (current-buffer) nil nil
1573 nnimap-server-buffer)))
1574 (cons group (nth 1 uid))
1575 (nnheader-report 'nnimap (imap-error-text nnimap-server-buffer))))))
1577 (deffoo nnimap-request-delete-group (group force &optional server)
1578 (when (nnimap-possibly-change-server server)
1579 (with-current-buffer nnimap-server-buffer
1581 (or (null (imap-mailbox-status group 'uidvalidity))
1582 (imap-mailbox-delete group))
1586 (deffoo nnimap-request-rename-group (group new-name &optional server)
1587 (when (nnimap-possibly-change-server server)
1588 (imap-mailbox-rename group new-name nnimap-server-buffer)))
1590 (defun nnimap-expunge (mailbox server)
1591 (when (nnimap-possibly-change-group mailbox server)
1592 (imap-mailbox-expunge nil nnimap-server-buffer)))
1594 (defun nnimap-acl-get (mailbox server)
1595 (when (nnimap-possibly-change-server server)
1596 (and (imap-capability 'ACL nnimap-server-buffer)
1597 (imap-mailbox-acl-get mailbox nnimap-server-buffer))))
1599 (defun nnimap-acl-edit (mailbox method old-acls new-acls)
1600 (when (nnimap-possibly-change-server (cadr method))
1601 (unless (imap-capability 'ACL nnimap-server-buffer)
1602 (error "Your server does not support ACL editing"))
1603 (with-current-buffer nnimap-server-buffer
1604 ;; delete all removed identifiers
1605 (mapc (lambda (old-acl)
1606 (unless (assoc (car old-acl) new-acls)
1607 (or (imap-mailbox-acl-delete (car old-acl) mailbox)
1608 (error "Can't delete ACL for %s" (car old-acl)))))
1610 ;; set all changed acl's
1611 (mapc (lambda (new-acl)
1612 (let ((new-rights (cdr new-acl))
1613 (old-rights (cdr (assoc (car new-acl) old-acls))))
1614 (unless (and old-rights new-rights
1615 (string= old-rights new-rights))
1616 (or (imap-mailbox-acl-set (car new-acl) new-rights mailbox)
1617 (error "Can't set ACL for %s to %s" (car new-acl)
1623 ;;; Internal functions
1626 ;; This is confusing.
1628 ;; mark => read, tick, draft, reply etc
1629 ;; flag => "\\Seen", "\\Flagged", "\\Draft", "gnus-expire" etc
1630 ;; predicate => "SEEN", "FLAGGED", "DRAFT", "KEYWORD gnus-expire" etc
1632 ;; Mark should not really contain 'read since it's not a "mark" in the Gnus
1633 ;; world, but we cheat. Mark == gnus-article-mark-lists + '(read . read).
1636 (defconst nnimap-mark-to-predicate-alist
1638 (lambda (pair) ; cdr is the mark
1639 (or (assoc (cdr pair)
1644 (reply . "ANSWERED")))
1646 (format "KEYWORD gnus-%s" (symbol-name (cdr pair))))))
1647 (cons '(read . read) gnus-article-mark-lists)))
1649 (defun nnimap-mark-to-predicate (pred)
1650 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP predicate.
1651 This is a string such as \"SEEN\", \"FLAGGED\", \"KEYWORD gnus-expire\",
1652 to be used within a IMAP SEARCH query."
1653 (cdr (assq pred nnimap-mark-to-predicate-alist)))
1655 (defconst nnimap-mark-to-flag-alist
1658 (or (assoc (cdr pair)
1660 (tick . "\\Flagged")
1662 (recent . "\\Recent")
1663 (reply . "\\Answered")))
1665 (format "gnus-%s" (symbol-name (cdr pair))))))
1666 (cons '(read . read) gnus-article-mark-lists)))
1668 (defun nnimap-mark-to-flag-1 (preds)
1669 (if (and (not (null preds)) (listp preds))
1670 (cons (nnimap-mark-to-flag (car preds))
1671 (nnimap-mark-to-flag (cdr preds)))
1672 (cdr (assoc preds nnimap-mark-to-flag-alist))))
1674 (defun nnimap-mark-to-flag (preds &optional always-list make-string)
1675 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP flag.
1676 This is a string such as \"\\Seen\", \"\\Flagged\", \"gnus-expire\", to
1677 be used in a STORE FLAGS command."
1678 (let ((result (nnimap-mark-to-flag-1 preds)))
1679 (setq result (if (and (or make-string always-list)
1680 (not (listp result)))
1684 (mapconcat (lambda (flag)
1686 (mapconcat 'identity flag " ")
1691 (defun nnimap-mark-permanent-p (mark &optional group)
1692 "Return t iff MARK can be permanently (between IMAP sessions) saved on articles, in GROUP."
1693 (imap-message-flag-permanent-p (nnimap-mark-to-flag mark)))
1697 (buffer-disable-undo (get-buffer-create nnimap-debug-buffer))
1698 (mapcar (lambda (f) (trace-function-background f nnimap-debug-buffer))
1700 nnimap-possibly-change-server
1701 nnimap-verify-uidvalidity
1702 nnimap-find-minmax-uid
1703 nnimap-before-find-minmax-bugworkaround
1704 nnimap-possibly-change-group
1705 ;;nnimap-replace-whitespace
1706 nnimap-retrieve-headers-progress
1707 nnimap-retrieve-which-headers
1708 nnimap-group-overview-filename
1709 nnimap-retrieve-headers-from-file
1710 nnimap-retrieve-headers-from-server
1711 nnimap-retrieve-headers
1712 nnimap-open-connection
1714 nnimap-server-opened
1716 nnimap-request-close
1717 nnimap-status-message
1719 nnimap-request-article-part
1720 nnimap-request-article
1723 nnimap-request-group
1725 nnimap-pattern-to-list-arguments
1728 nnimap-retrieve-groups
1729 nnimap-request-update-info-internal
1731 nnimap-request-set-mark
1732 nnimap-split-to-groups
1733 nnimap-split-find-rule
1734 nnimap-split-find-inbox
1735 nnimap-split-articles
1737 nnimap-request-newgroups
1738 nnimap-request-create-group
1739 nnimap-time-substract
1740 nnimap-date-days-ago
1741 nnimap-request-expire-articles-progress
1742 nnimap-request-expire-articles
1743 nnimap-request-move-article
1744 nnimap-request-accept-article
1745 nnimap-request-delete-group
1746 nnimap-request-rename-group
1747 gnus-group-nnimap-expunge
1748 gnus-group-nnimap-edit-acl
1749 gnus-group-nnimap-edit-acl-done
1750 nnimap-group-mode-hook
1751 nnimap-mark-to-predicate
1752 nnimap-mark-to-flag-1
1754 nnimap-mark-permanent-p
1759 ;;; nnimap.el ends here