1 ;;; nnimap.el --- imap backend for Gnus
2 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
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))
74 (eval-when-compile (require 'cl))
78 (defconst nnimap-version "nnimap 1.0")
81 "Reading IMAP mail with Gnus."
84 (defvoo nnimap-address nil
85 "Address of physical IMAP server. If nil, use the virtual server's name.")
87 (defvoo nnimap-server-port nil
88 "Port number on physical IMAP server.
89 If nil, defaults to 993 for TLS/SSL connections and 143 otherwise.")
91 ;; Splitting variables
93 (defcustom nnimap-split-crosspost t
94 "If non-nil, do crossposting if several split methods match the mail.
95 If nil, the first match found will be used."
99 (defcustom nnimap-split-inbox nil
100 "Name of mailbox to split mail from.
102 Mail is read from this mailbox and split according to rules in
105 This can be a string or a list of strings."
107 :type '(choice (string)
110 (define-widget 'nnimap-strict-function 'function
111 "This widget only matches values that are functionp.
113 Warning: This means that a value that is the symbol of a not yet
114 loaded function will not match. Use with care."
115 :match 'nnimap-strict-function-match)
117 (defun nnimap-strict-function-match (widget value)
118 "Ignoring WIDGET, match if VALUE is a function."
121 (defcustom nnimap-split-rule nil
122 "Mail will be split according to these rules.
124 Mail is read from mailbox(es) specified in `nnimap-split-inbox'.
126 If you'd like, for instance, one mail group for mail from the
127 \"gnus-imap\" mailing list, one group for junk mail and leave
128 everything else in the incoming mailbox, you could do something like
131 \(setq nnimap-split-rule '((\"INBOX.gnus-imap\" \"From:.*gnus-imap\")
132 (\"INBOX.junk\" \"Subject:.*buy\")))
134 As you can see, `nnimap-split-rule' is a list of lists, where the
135 first element in each \"rule\" is the name of the IMAP mailbox (or the
136 symbol `junk' if you want to remove the mail), and the second is a
137 regexp that nnimap will try to match on the header to find a fit.
139 The second element can also be a function. In that case, it will be
140 called narrowed to the headers with the first element of the rule as
141 the argument. It should return a non-nil value if it thinks that the
142 mail belongs in that group.
144 This variable can also have a function as its value, the function will
145 be called with the headers narrowed and should return a group where it
146 thinks the article should be splitted to. See `nnimap-split-fancy'.
148 To allow for different split rules on different virtual servers, and
149 even different split rules in different inboxes on the same server,
150 the syntax of this variable have been extended along the lines of:
152 \(setq nnimap-split-rule
153 '((\"my1server\" (\".*\" ((\"ding\" \"ding@gnus.org\")
154 (\"junk\" \"From:.*Simon\")))
155 (\"my2server\" (\"INBOX\" nnimap-split-fancy))
156 (\"my[34]server\" (\".*\" ((\"private\" \"To:.*Simon\")
157 (\"junk\" my-junk-func)))))
159 The virtual server name is in fact a regexp, so that the same rules
160 may apply to several servers. In the example, the servers
161 \"my3server\" and \"my4server\" both use the same rules. Similarly,
162 the inbox string is also a regexp. The actual splitting rules are as
163 before, either a function, or a list with group/regexp or
164 group/function elements."
166 :type '(choice :tag "Rule type"
167 (repeat :menu-tag "Single-server"
168 :tag "Single-server list"
169 (list (string :tag "Mailbox")
170 (choice :tag "Predicate"
171 (regexp :tag "A regexp")
172 (nnimap-strict-function :tag "A function"))))
173 (choice :menu-tag "A function"
175 (function-item nnimap-split-fancy)
176 (function-item nnmail-split-fancy)
177 (nnimap-strict-function :tag "User-defined function"))
178 (repeat :menu-tag "Multi-server (extended)"
179 :tag "Multi-server list"
180 (list (regexp :tag "Server regexp")
181 (list (regexp :tag "Incoming Mailbox regexp")
182 (repeat :tag "Rules for matching server(s) and mailbox(es)"
183 (list (string :tag "Destination mailbox")
184 (choice :tag "Predicate"
185 (regexp :tag "A Regexp")
186 (nnimap-strict-function :tag "A Function")))))))))
188 (defcustom nnimap-split-predicate "UNSEEN UNDELETED"
189 "The predicate used to find articles to split.
190 If you use another IMAP client to peek on articles but always would
191 like nnimap to split them once it's started, you could change this to
192 \"UNDELETED\". Other available predicates are available in
193 RFC2060 section 6.4.4."
197 (defcustom nnimap-split-fancy nil
198 "Like the variable `nnmail-split-fancy'."
202 (defvar nnimap-split-download-body-default nil
203 "Internal variable with default value for `nnimap-split-download-body'.")
205 (defcustom nnimap-split-download-body 'default
206 "Whether to download entire articles during splitting.
207 This is generally not required, and will slow things down considerably.
208 You may need it if you want to use an advanced splitting function that
209 analyses the body before splitting the article.
210 If this variable is nil, bodies will not be downloaded; if this
211 variable is the symbol `default' the default behaviour is
212 used (which currently is nil, unless you use a statistical
213 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 caught 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."
231 (defcustom nnimap-dont-close t
232 "Never close mailboxes.
233 This increases the speed of closing mailboxes (quiting group) but may
234 decrease the speed of selecting another mailbox later. Re-selecting
235 the same mailbox will be faster though."
240 (defcustom nnimap-retrieve-groups-asynchronous t
241 "Send asynchronous STATUS commands for each mailbox before checking mail.
242 If you have mailboxes that rarely receives mail, this speeds up new
243 mail checking. It works by first sending STATUS commands for each
244 mailbox, and then only checking groups which has a modified UIDNEXT
245 more carefully for new mail.
247 In summary, the default is O((1-p)*k+p*n) and changing it to nil makes
248 it O(n). If p is small, then the default is probably faster."
253 (defvoo nnimap-need-unselect-to-notice-new-mail nil
254 "Unselect mailboxes before looking for new mail in them.
255 Some servers seem to need this under some circumstances.")
257 ;; Authorization / Privacy variables
259 (defvoo nnimap-auth-method nil
262 (defvoo nnimap-stream nil
263 "How nnimap will connect to the server.
265 The default, nil, will try to use the \"best\" method the server can
270 1) you want to connect with TLS/SSL. The TLS/SSL integration
271 with IMAP is suboptimal so you'll have to tell it
274 2) your server is more capable than your environment -- i.e. your
275 server accept Kerberos login's but you haven't installed the
276 `imtest' program or your machine isn't configured for Kerberos.
278 Possible choices: gssapi, kerberos4, starttls, tls, ssl, network, shell.
279 See also `imap-streams' and `imap-stream-alist'.")
281 (defvoo nnimap-authenticator nil
282 "How nnimap authenticate itself to the server.
284 The default, nil, will try to use the \"best\" method the server can
287 There is only one reason for fiddling with this variable, and that is
288 if your server is more capable than your environment -- i.e. you
289 connect to a server that accept Kerberos login's but you haven't
290 installed the `imtest' program or your machine isn't configured for
293 Possible choices: gssapi, kerberos4, digest-md5, cram-md5, login, anonymous.
294 See also `imap-authenticators' and `imap-authenticator-alist'")
296 (defvoo nnimap-directory (nnheader-concat gnus-directory "overview/")
297 "Directory to keep NOV cache files for nnimap groups.
298 See also `nnimap-nov-file-name'.")
300 (defvoo nnimap-nov-file-name "nnimap."
301 "NOV cache base filename.
302 The group name and `nnimap-nov-file-name-suffix' will be appended. A
303 typical complete file name would be
304 ~/News/overview/nnimap.pdc.INBOX.ding.nov, or
305 ~/News/overview/nnimap/pdc/INBOX/ding/nov if
306 `nnmail-use-long-file-names' is nil")
308 (defvoo nnimap-nov-file-name-suffix ".novcache"
309 "Suffix for NOV cache base filename.")
311 (defvoo nnimap-nov-is-evil gnus-agent
312 "If non-nil, never generate or use a local nov database for this backend.
313 Using nov databases should speed up header fetching considerably.
314 However, it will invoke a UID SEARCH UID command on the server, and
315 some servers implement this command inefficiently by opening each and
316 every message in the group, thus making it quite slow.
317 Unlike other backends, you do not need to take special care if you
318 flip this variable.")
320 (defvoo nnimap-expunge-on-close 'always ; 'ask, 'never
321 "Whether to expunge a group when it is closed.
322 When a IMAP group with articles marked for deletion is closed, this
323 variable determine if nnimap should actually remove the articles or
326 If always, nnimap always perform a expunge when closing the group.
327 If never, nnimap never expunges articles marked for deletion.
328 If ask, nnimap will ask you if you wish to expunge marked articles.
330 When setting this variable to `never', you can only expunge articles
331 by using `G x' (gnus-group-nnimap-expunge) from the Group buffer.")
333 (defvoo nnimap-list-pattern "*"
334 "A string LIMIT or list of strings with mailbox wildcards used to limit available groups.
335 See below for available wildcards.
337 The LIMIT string can be a cons cell (REFERENCE . LIMIT), where
338 REFERENCE will be passed as the first parameter to LIST/LSUB. The
339 semantics of this are server specific, on the University of Washington
340 server you can specify a directory.
343 '(\"INBOX\" \"mail/*\" (\"~friend/mail/\" . \"list/*\"))
345 There are two wildcards * and %. * matches everything, % matches
346 everything in the current hierarchy.")
348 (defvoo nnimap-news-groups nil
349 "IMAP support a news-like mode, also known as bulletin board mode,
350 where replies is sent via IMAP instead of SMTP.
352 This variable should contain a regexp matching groups where you wish
353 replies to be stored to the mailbox directly.
356 '(\"^[^I][^N][^B][^O][^X].*$\")
358 This will match all groups not beginning with \"INBOX\".
360 Note that there is nothing technically different between mail-like and
361 news-like mailboxes. If you wish to have a group with todo items or
362 similar which you wouldn't want to set up a mailing list for, you can
363 use this to make replies go directly to the group.")
365 (defvoo nnimap-expunge-search-string "UID %s NOT SINCE %s"
366 "IMAP search command to use for articles that are to be expired.
367 The first %s is replaced by a UID set of articles to search on,
368 and the second %s is replaced by a date criterium.
370 One useful (and perhaps the only useful) value to change this to would
371 be `UID %s NOT SENTSINCE %s' to make nnimap use the Date: header
372 instead of the internal date of messages. See section 6.4.4 of RFC
373 2060 for more information on valid strings.")
375 (defvoo nnimap-importantize-dormant t
376 "If non-nil, mark \"dormant\" articles as \"ticked\" for other IMAP clients.
377 Note that within Gnus, dormant articles will still (only) be
378 marked as ticked. This is to make \"dormant\" articles stand out,
379 just like \"ticked\" articles, in other IMAP clients.")
381 (defvoo nnimap-server-address nil
382 "Obsolete. Use `nnimap-address'.")
384 (defcustom nnimap-authinfo-file "~/.authinfo"
385 "Authorization information for IMAP servers. In .netrc format."
388 (repeat :tag "Entries"
391 :value ("" ("login" . "") ("password" . ""))
395 (const :format "" "login")
396 (string :format "Login: %v"))
398 (const :format "" "password")
399 (string :format "Password: %v"))))))
402 (defcustom nnimap-prune-cache t
403 "If non-nil, nnimap check whether articles still exist on server before using data stored in NOV cache."
407 (defvar nnimap-request-list-method 'imap-mailbox-list
408 "Method to use to request a list of all folders from the server.
409 If this is 'imap-mailbox-lsub, then use a server-side subscription list to
410 restrict visible folders.")
412 (defcustom nnimap-id nil
413 "Plist with client identity to send to server upon login.
414 Nil means no information is sent, symbol `no' to disable ID query
415 alltogheter, or plist with identifier-value pairs to send to
416 server. RFC 2971 describes the list as follows:
418 Any string may be sent as a field, but the following are defined to
419 describe certain values that might be sent. Implementations are free
420 to send none, any, or all of these. Strings are not case-sensitive.
421 Field strings MUST NOT be longer than 30 octets. Value strings MUST
422 NOT be longer than 1024 octets. Implementations MUST NOT send more
423 than 30 field-value pairs.
425 name Name of the program
426 version Version number of the program
427 os Name of the operating system
428 os-version Version of the operating system
429 vendor Vendor of the client/server
430 support-url URL to contact for support
431 address Postal address of contact/vendor
432 date Date program was released, specified as a date-time
434 command Command used to start the program
435 arguments Arguments supplied on the command line, if any
437 environment Description of environment, i.e., UNIX environment
438 variables or Windows registry settings
440 Implementations MUST NOT send the same field name more than once.
442 An example plist would be '(\"name\" \"Gnus\" \"version\" gnus-version-number
443 \"os\" system-configuration \"vendor\" \"GNU\")."
445 :type '(choice (const :tag "No information" nil)
446 (const :tag "Disable ID query" no)
447 (plist :key-type string :value-type string)))
449 (defcustom nnimap-debug nil
450 "If non-nil, random debug spews are placed in *nnimap-debug* buffer."
454 ;; Internal variables:
456 (defvar nnimap-debug-buffer "*nnimap-debug*")
457 (defvar nnimap-mailbox-info (gnus-make-hashtable 997))
458 (defvar nnimap-current-move-server nil)
459 (defvar nnimap-current-move-group nil)
460 (defvar nnimap-current-move-article nil)
461 (defvar nnimap-length)
462 (defvar nnimap-progress-chars '(?| ?/ ?- ?\\))
463 (defvar nnimap-progress-how-often 20)
464 (defvar nnimap-counter)
465 (defvar nnimap-server-buffer-alist nil) ;; Map server name to buffers.
466 (defvar nnimap-current-server nil) ;; Current server
467 (defvar nnimap-server-buffer nil) ;; Current servers' buffer
471 (nnoo-define-basics nnimap)
473 ;; Utility functions:
475 (defsubst nnimap-get-server-buffer (server)
476 "Return buffer for SERVER, if nil use current server."
477 (cadr (assoc (or server nnimap-current-server) nnimap-server-buffer-alist)))
479 (defun nnimap-possibly-change-server (server)
480 "Return buffer for SERVER, changing the current server as a side-effect.
481 If SERVER is nil, uses the current server."
482 (setq nnimap-current-server (or server nnimap-current-server)
483 nnimap-server-buffer (nnimap-get-server-buffer nnimap-current-server)))
485 (defun nnimap-verify-uidvalidity (group server)
486 "Verify stored uidvalidity match current one in GROUP on SERVER."
487 (let* ((gnusgroup (gnus-group-prefixed-name
488 group (gnus-server-to-method
489 (format "nnimap:%s" server))))
490 (new-uidvalidity (imap-mailbox-get 'uidvalidity))
491 (old-uidvalidity (gnus-group-get-parameter gnusgroup 'uidvalidity))
492 (dir (file-name-as-directory (expand-file-name nnimap-directory)))
493 (nameuid (nnheader-translate-file-chars
494 (concat nnimap-nov-file-name
495 (if (equal server "")
497 server) "." group "." old-uidvalidity
498 nnimap-nov-file-name-suffix) t))
499 (file (if (or nnmail-use-long-file-names
500 (file-exists-p (expand-file-name nameuid dir)))
501 (expand-file-name nameuid dir)
503 (encode-coding-string
504 (nnheader-replace-chars-in-string nameuid ?. ?/)
505 nnmail-pathname-coding-system)
508 (if (not (equal old-uidvalidity new-uidvalidity))
510 (gnus-delete-file file)
511 (gnus-group-set-parameter gnusgroup 'uidvalidity new-uidvalidity)
513 (gnus-group-add-parameter gnusgroup (cons 'uidvalidity new-uidvalidity))
516 (defun nnimap-before-find-minmax-bugworkaround ()
517 "Function called before iterating through mailboxes with
518 `nnimap-find-minmax-uid'."
519 (when nnimap-need-unselect-to-notice-new-mail
520 ;; XXX this is for UoW imapd problem, it doesn't notice new mail in
521 ;; currently selected mailbox without a re-select/examine.
522 (or (null (imap-current-mailbox nnimap-server-buffer))
523 (imap-mailbox-unselect nnimap-server-buffer))))
525 (defun nnimap-find-minmax-uid (group &optional examine)
526 "Find lowest and highest active article number in GROUP.
527 If EXAMINE is non-nil the group is selected read-only."
528 (with-current-buffer nnimap-server-buffer
529 (when (or (string= group (imap-current-mailbox))
530 (imap-mailbox-select group examine))
532 (when (> (imap-mailbox-get 'exists) 0)
533 (imap-fetch "1,*" "UID" nil 'nouidfetch)
534 (imap-message-map (lambda (uid Uid)
535 (setq minuid (if minuid (min minuid uid) uid)
536 maxuid (if maxuid (max maxuid uid) uid)))
538 (list (imap-mailbox-get 'exists) minuid maxuid)))))
540 (defun nnimap-possibly-change-group (group &optional server)
541 "Make GROUP the current group, and SERVER the current server."
542 (when (nnimap-possibly-change-server server)
543 (with-current-buffer nnimap-server-buffer
544 (if (or (null group) (imap-current-mailbox-p group))
546 (if (imap-mailbox-select group)
547 (if (or (nnimap-verify-uidvalidity
548 group (or server nnimap-current-server))
549 (zerop (imap-mailbox-get 'exists group))
550 t ;; for OGnus to see if ignoring uidvalidity
551 ;; changes has any bad effects.
554 "nnimap: Group %s is not uidvalid. Continue? " group)))
556 (imap-mailbox-unselect)
557 (error "nnimap: Group %s is not uid-valid" group))
558 (nnheader-report 'nnimap (imap-error-text)))))))
560 (defun nnimap-replace-whitespace (string)
561 "Return STRING with all whitespace replaced with space."
563 (while (string-match "[\r\n\t]+" string)
564 (setq string (replace-match " " t t string)))
567 ;; Required backend functions
569 (defun nnimap-retrieve-headers-progress ()
570 "Hook to insert NOV line for current article into `nntp-server-buffer'."
571 (and (numberp nnmail-large-newsgroup)
572 (zerop (% (incf nnimap-counter) nnimap-progress-how-often))
573 (> nnimap-length nnmail-large-newsgroup)
574 (nnheader-message 6 "nnimap: Retrieving headers... %c"
575 (nth (/ (% nnimap-counter
576 (* (length nnimap-progress-chars)
577 nnimap-progress-how-often))
578 nnimap-progress-how-often)
579 nnimap-progress-chars)))
580 (with-current-buffer nntp-server-buffer
581 (let (headers lines chars uid mbx)
582 (with-current-buffer nnimap-server-buffer
583 (setq uid imap-current-message
584 mbx imap-current-mailbox
585 headers (nnimap-demule
586 (if (imap-capability 'IMAP4rev1)
587 ;; xxx don't just use car? alist doesn't contain
588 ;; anything else now, but it might...
589 (nth 2 (car (imap-message-get uid 'BODYDETAIL)))
590 (imap-message-get uid 'RFC822.HEADER)))
591 lines (imap-body-lines (imap-message-body imap-current-message))
592 chars (imap-message-get imap-current-message 'RFC822.SIZE)))
595 (buffer-disable-undo)
597 (let ((head (nnheader-parse-naked-head uid)))
598 (mail-header-set-number head uid)
599 (mail-header-set-chars head chars)
600 (mail-header-set-lines head lines)
601 (mail-header-set-xref
602 head (format "%s %s:%d" (system-name) mbx uid))
605 (defun nnimap-retrieve-which-headers (articles fetch-old)
606 "Get a range of articles to fetch based on ARTICLES and FETCH-OLD."
607 (with-current-buffer nnimap-server-buffer
608 (if (numberp (car-safe articles))
611 (imap-range-to-message-set
612 (gnus-compress-sequence
613 (append (gnus-uncompress-sequence
615 (cons (if (numberp fetch-old)
616 (max 1 (- (car articles) fetch-old))
618 (1- (car articles)))))
620 (mapcar (lambda (msgid)
622 (format "HEADER Message-Id \"%s\"" msgid)))
625 (defun nnimap-group-overview-filename (group server)
626 "Make file name for GROUP on SERVER."
627 (let* ((dir (file-name-as-directory (expand-file-name nnimap-directory)))
628 (uidvalidity (gnus-group-get-parameter
629 (gnus-group-prefixed-name
630 group (gnus-server-to-method
631 (format "nnimap:%s" server)))
633 (name (nnheader-translate-file-chars
634 (concat nnimap-nov-file-name
635 (if (equal server "")
637 server) "." group nnimap-nov-file-name-suffix) t))
638 (nameuid (nnheader-translate-file-chars
639 (concat nnimap-nov-file-name
640 (if (equal server "")
642 server) "." group "." uidvalidity
643 nnimap-nov-file-name-suffix) t))
644 (oldfile (if (or nnmail-use-long-file-names
645 (file-exists-p (expand-file-name name dir)))
646 (expand-file-name name dir)
648 (encode-coding-string
649 (nnheader-replace-chars-in-string name ?. ?/)
650 nnmail-pathname-coding-system)
652 (newfile (if (or nnmail-use-long-file-names
653 (file-exists-p (expand-file-name nameuid dir)))
654 (expand-file-name nameuid dir)
656 (encode-coding-string
657 (nnheader-replace-chars-in-string nameuid ?. ?/)
658 nnmail-pathname-coding-system)
660 (when (and (file-exists-p oldfile) (not (file-exists-p newfile)))
661 (message "nnimap: Upgrading novcache filename...")
663 (gnus-make-directory (file-name-directory newfile))
664 (unless (ignore-errors (rename-file oldfile newfile) t)
665 (if (ignore-errors (copy-file oldfile newfile) t)
666 (delete-file oldfile)
667 (error "Can't rename `%s' to `%s'" oldfile newfile))))
670 (defun nnimap-retrieve-headers-from-file (group server)
671 (with-current-buffer nntp-server-buffer
672 (let ((nov (nnimap-group-overview-filename group server)))
673 (when (file-exists-p nov)
674 (nnheader-insert-file-contents nov)
675 (set-buffer-modified-p nil)
676 (let ((min (ignore-errors (goto-char (point-min))
677 (read (current-buffer))))
678 (max (ignore-errors (goto-char (point-max))
680 (read (current-buffer)))))
681 (if (and (numberp min) (numberp max))
683 ;; junk, remove it, it's saved later
687 (defun nnimap-retrieve-headers-from-server (articles group server)
688 (with-current-buffer nnimap-server-buffer
689 (let ((imap-fetch-data-hook '(nnimap-retrieve-headers-progress))
690 (nnimap-length (gnus-range-length articles))
692 (imap-fetch (imap-range-to-message-set articles)
693 (concat "(UID RFC822.SIZE BODY "
695 (append '(Subject From Date Message-Id
696 References In-Reply-To Xref)
698 nnmail-extra-headers))))
699 (if (imap-capability 'IMAP4rev1)
700 (format "BODY.PEEK[HEADER.FIELDS %s])" headers)
701 (format "RFC822.HEADER.LINES %s)" headers)))))
702 (and (numberp nnmail-large-newsgroup)
703 (> nnimap-length nnmail-large-newsgroup)
704 (nnheader-message 6 "nnimap: Retrieving headers...done")))))
706 (defun nnimap-dont-use-nov-p (group server)
707 (or gnus-nov-is-evil nnimap-nov-is-evil
708 (unless (and (gnus-make-directory
710 (nnimap-group-overview-filename group server)))
712 (nnimap-group-overview-filename group server)))
713 (message "nnimap: Nov cache not writable, %s"
714 (nnimap-group-overview-filename group server)))))
716 (deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
717 (when (nnimap-possibly-change-group group server)
718 (with-current-buffer nntp-server-buffer
720 (if (nnimap-dont-use-nov-p group server)
721 (nnimap-retrieve-headers-from-server
722 (gnus-compress-sequence articles) group server)
723 (let (uids cached low high)
724 (when (setq uids (nnimap-retrieve-which-headers articles fetch-old)
726 high (car (last uids)))
727 (if (setq cached (nnimap-retrieve-headers-from-file group server))
729 ;; fetch articles with uids before cache block
730 (when (< low (car cached))
731 (goto-char (point-min))
732 (nnimap-retrieve-headers-from-server
733 (cons low (1- (car cached))) group server))
734 ;; fetch articles with uids after cache block
735 (when (> high (cdr cached))
736 (goto-char (point-max))
737 (nnimap-retrieve-headers-from-server
738 (cons (1+ (cdr cached)) high) group server))
739 (when nnimap-prune-cache
740 ;; remove nov's for articles which has expired on server
741 (goto-char (point-min))
742 (dolist (uid (gnus-set-difference articles uids))
743 (when (re-search-forward (format "^%d\t" uid) nil t)
744 (gnus-delete-line)))))
745 ;; nothing cached, fetch whole range from server
746 (nnimap-retrieve-headers-from-server
747 (cons low high) group server))
748 (when (buffer-modified-p)
750 (point-min) (point-max)
751 (nnimap-group-overview-filename group server) nil 'nomesg))
752 (nnheader-nov-delete-outside-range low high))))
755 (defun nnimap-open-connection (server)
756 (if (not (imap-open nnimap-address nnimap-server-port nnimap-stream
757 nnimap-authenticator nnimap-server-buffer))
758 (nnheader-report 'nnimap "Can't open connection to server %s" server)
759 (unless (or (imap-capability 'IMAP4 nnimap-server-buffer)
760 (imap-capability 'IMAP4rev1 nnimap-server-buffer))
761 (imap-close nnimap-server-buffer)
762 (nnheader-report 'nnimap "Server %s is not IMAP4 compliant" server))
763 (let* ((list (netrc-parse nnimap-authinfo-file))
764 (port (if nnimap-server-port
765 (int-to-string nnimap-server-port)
767 (alist (or (netrc-machine list server port "imap")
769 (or nnimap-server-address
772 (netrc-machine list server port "imaps")
774 (or nnimap-server-address
777 (user (netrc-get alist "login"))
778 (passwd (netrc-get alist "password")))
779 (if (imap-authenticate user passwd nnimap-server-buffer)
781 (push (list server nnimap-server-buffer)
782 nnimap-server-buffer-alist)
783 (imap-id nnimap-id nnimap-server-buffer)
784 (nnimap-possibly-change-server server))
785 (imap-close nnimap-server-buffer)
786 (kill-buffer nnimap-server-buffer)
787 (nnheader-report 'nnimap "Could not authenticate to %s" server)))))
789 (deffoo nnimap-open-server (server &optional defs)
790 (nnheader-init-server-buffer)
791 (if (nnimap-server-opened server)
793 (unless (assq 'nnimap-server-buffer defs)
794 (push (list 'nnimap-server-buffer (concat " *nnimap* " server)) defs))
795 ;; translate `nnimap-server-address' to `nnimap-address' in defs
796 ;; for people that configured nnimap with a very old version
797 (unless (assq 'nnimap-address defs)
798 (if (assq 'nnimap-server-address defs)
799 (push (list 'nnimap-address
800 (cadr (assq 'nnimap-server-address defs))) defs)
801 (push (list 'nnimap-address server) defs)))
802 (nnoo-change-server 'nnimap server defs)
803 (or nnimap-server-buffer
804 (setq nnimap-server-buffer (cadr (assq 'nnimap-server-buffer defs))))
805 (with-current-buffer (get-buffer-create nnimap-server-buffer)
806 (nnoo-change-server 'nnimap server defs))
807 (or (and nnimap-server-buffer
808 (imap-opened nnimap-server-buffer)
809 (if (with-current-buffer nnimap-server-buffer
810 (memq imap-state '(auth select examine)))
812 (imap-close nnimap-server-buffer)
813 (nnimap-open-connection server)))
814 (nnimap-open-connection server))))
816 (deffoo nnimap-server-opened (&optional server)
817 "Whether SERVER is opened.
818 If SERVER is the current virtual server, and the connection to the
819 physical server is alive, this function return a non-nil value. If
820 SERVER is nil, it is treated as the current server."
821 ;; clean up autologouts??
822 (and (or server nnimap-current-server)
823 (nnoo-server-opened 'nnimap (or server nnimap-current-server))
824 (imap-opened (nnimap-get-server-buffer server))))
826 (deffoo nnimap-close-server (&optional server)
827 "Close connection to server and free all resources connected to it.
828 Return nil if the server couldn't be closed for some reason."
829 (let ((server (or server nnimap-current-server)))
830 (when (or (nnimap-server-opened server)
831 (imap-opened (nnimap-get-server-buffer server)))
832 (imap-close (nnimap-get-server-buffer server))
833 (kill-buffer (nnimap-get-server-buffer server))
834 (setq nnimap-server-buffer nil
835 nnimap-current-server nil
836 nnimap-server-buffer-alist
837 (delq server nnimap-server-buffer-alist)))
838 (nnoo-close-server 'nnimap server)))
840 (deffoo nnimap-request-close ()
841 "Close connection to all servers and free all resources that the backend have reserved.
842 All buffers that have been created by that
843 backend should be killed. (Not the nntp-server-buffer, though.) This
844 function is generally only called when Gnus is shutting down."
845 (mapc (lambda (server) (nnimap-close-server (car server)))
846 nnimap-server-buffer-alist)
847 (setq nnimap-server-buffer-alist nil))
849 (deffoo nnimap-status-message (&optional server)
850 "This function returns the last error message from server."
851 (when (nnimap-possibly-change-server server)
852 (nnoo-status-message 'nnimap server)))
854 (defun nnimap-demule (string)
855 ;; BEWARE: we used to use string-as-multibyte here which is braindead
856 ;; because it will turn accidental emacs-mule-valid byte sequences
857 ;; into multibyte chars. --Stef
858 ;; Reverted, braindead got 7.5 out of 10 on imdb, so it can't be
860 (funcall (if (and (fboundp 'string-as-multibyte)
861 (subrp (symbol-function 'string-as-multibyte)))
866 (defun nnimap-make-callback (article gnus-callback buffer)
867 "Return a callback function."
869 (nnimap-callback ,article ,gnus-callback ,buffer)))
871 (defun nnimap-callback (article gnus-callback buffer)
872 (when (eq article (imap-current-message))
873 (remove-hook 'imap-fetch-data-hook
874 (nnimap-make-callback article gnus-callback buffer))
875 (with-current-buffer buffer
877 (with-current-buffer nnimap-server-buffer
879 (if (imap-capability 'IMAP4rev1)
880 ;; xxx don't just use car? alist doesn't contain
881 ;; anything else now, but it might...
882 (nth 2 (car (imap-message-get article 'BODYDETAIL)))
883 (imap-message-get article 'RFC822)))))
884 (nnheader-ms-strip-cr)
885 (funcall gnus-callback t))))
887 (defun nnimap-request-article-part (article part prop &optional
888 group server to-buffer detail)
889 (when (nnimap-possibly-change-group group server)
890 (let ((article (if (stringp article)
891 (car-safe (imap-search
892 (format "HEADER Message-Id \"%s\"" article)
893 nnimap-server-buffer))
896 (gnus-message 10 "nnimap: Fetching (part of) article %d from %s..."
897 article (or group imap-current-mailbox
898 gnus-newsgroup-name))
899 (if (not nnheader-callback-function)
900 (with-current-buffer (or to-buffer nntp-server-buffer)
902 (let ((data (imap-fetch article part prop nil
903 nnimap-server-buffer)))
905 (insert (nnimap-demule (if detail (nth 2 (car data)) data)))
906 (nnheader-ms-strip-cr)
908 10 "nnimap: Fetching (part of) article %d from %s...done"
909 article (or group imap-current-mailbox gnus-newsgroup-name))
911 (nnheader-report 'nnimap "No such article %d in %s: %s"
912 article (or group imap-current-mailbox
914 (imap-error-text nnimap-server-buffer))
915 (cons group article)))))
916 (add-hook 'imap-fetch-data-hook
917 (nnimap-make-callback article
918 nnheader-callback-function
920 (imap-fetch-asynch article part nil nnimap-server-buffer)
921 (cons group article))))))
923 (deffoo nnimap-asynchronous-p ()
926 (deffoo nnimap-request-article (article &optional group server to-buffer)
927 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
928 (nnimap-request-article-part
929 article "BODY.PEEK[]" 'BODYDETAIL group server to-buffer 'detail)
930 (nnimap-request-article-part
931 article "RFC822.PEEK" 'RFC822 group server to-buffer)))
933 (deffoo nnimap-request-head (article &optional group server to-buffer)
934 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
935 (nnimap-request-article-part
936 article "BODY.PEEK[HEADER]" 'BODYDETAIL group server to-buffer 'detail)
937 (nnimap-request-article-part
938 article "RFC822.HEADER" 'RFC822.HEADER group server to-buffer)))
940 (deffoo nnimap-request-body (article &optional group server to-buffer)
941 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
942 (nnimap-request-article-part
943 article "BODY.PEEK[TEXT]" 'BODYDETAIL group server to-buffer 'detail)
944 (nnimap-request-article-part
945 article "RFC822.TEXT.PEEK" 'RFC822.TEXT group server to-buffer)))
947 (deffoo nnimap-request-group (group &optional server fast)
948 (nnimap-request-update-info-internal
950 (gnus-get-info (gnus-group-prefixed-name
951 group (gnus-server-to-method (format "nnimap:%s" server))))
953 (when (nnimap-possibly-change-group group server)
954 (nnimap-before-find-minmax-bugworkaround)
957 ((null (setq info (nnimap-find-minmax-uid group t)))
958 (nnheader-report 'nnimap "Could not get active info for %s"
961 (nnheader-insert "211 %d %d %d %s\n" (or (nth 0 info) 0)
962 (max 1 (or (nth 1 info) 1))
963 (or (nth 2 info) 0) group)
964 (nnheader-report 'nnimap "Group %s selected" group)
967 (defun nnimap-update-unseen (group &optional server)
968 "Update the unseen count in `nnimap-mailbox-info'."
970 (gnus-group-prefixed-name group server)
971 (let ((old (gnus-gethash-safe (gnus-group-prefixed-name group server)
972 nnimap-mailbox-info)))
973 (list (nth 0 old) (nth 1 old)
974 (imap-mailbox-status group 'unseen nnimap-server-buffer)
976 nnimap-mailbox-info))
978 (defun nnimap-close-group (group &optional server)
979 (with-current-buffer nnimap-server-buffer
980 (when (and (imap-opened)
981 (nnimap-possibly-change-group group server))
982 (nnimap-update-unseen group server)
983 (case nnimap-expunge-on-close
985 (imap-mailbox-expunge nnimap-close-asynchronous)
986 (unless nnimap-dont-close
987 (imap-mailbox-close nnimap-close-asynchronous))))
988 (ask (if (and (imap-search "DELETED")
989 (gnus-y-or-n-p (format "Expunge articles in group `%s'? "
990 imap-current-mailbox)))
992 (imap-mailbox-expunge nnimap-close-asynchronous)
993 (unless nnimap-dont-close
994 (imap-mailbox-close nnimap-close-asynchronous)))
995 (imap-mailbox-unselect)))
996 (t (imap-mailbox-unselect)))
997 (not imap-current-mailbox))))
999 (defun nnimap-pattern-to-list-arguments (pattern)
1001 (cons (car-safe p) (or (cdr-safe p) p)))
1002 (if (and (listp pattern)
1003 (listp (cdr pattern)))
1007 (deffoo nnimap-request-list (&optional server)
1008 (when (nnimap-possibly-change-server server)
1009 (with-current-buffer nntp-server-buffer
1011 (gnus-message 5 "nnimap: Generating active list%s..."
1012 (if (> (length server) 0) (concat " for " server) ""))
1013 (nnimap-before-find-minmax-bugworkaround)
1014 (with-current-buffer nnimap-server-buffer
1015 (dolist (pattern (nnimap-pattern-to-list-arguments nnimap-list-pattern))
1016 (dolist (mbx (funcall nnimap-request-list-method
1017 (cdr pattern) (car pattern)))
1018 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags mbx))
1019 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1021 (with-current-buffer nntp-server-buffer
1022 (insert (format "\"%s\" %d %d y\n"
1023 mbx (or (nth 2 info) 0)
1024 (max 1 (or (nth 1 info) 1)))))))))))
1025 (gnus-message 5 "nnimap: Generating active list%s...done"
1026 (if (> (length server) 0) (concat " for " server) ""))
1029 (deffoo nnimap-request-post (&optional server)
1031 (dolist (mbx (message-unquote-tokens
1032 (message-tokenize-header
1033 (message-fetch-field "Newsgroups") ", ")) success)
1034 (let ((to-newsgroup (gnus-group-prefixed-name mbx gnus-command-method)))
1035 (or (gnus-active to-newsgroup)
1036 (gnus-activate-group to-newsgroup)
1037 (if (gnus-y-or-n-p (format "No such group: %s. Create it? "
1039 (or (and (gnus-request-create-group
1040 to-newsgroup gnus-command-method)
1041 (gnus-activate-group to-newsgroup nil nil
1042 gnus-command-method))
1043 (error "Couldn't create group %s" to-newsgroup)))
1044 (error "No such group: %s" to-newsgroup))
1045 (unless (nnimap-request-accept-article mbx (nth 1 gnus-command-method))
1046 (setq success nil))))))
1048 ;; Optional backend functions
1050 (defun nnimap-string-lessp-numerical (s1 s2)
1051 "Return t if first arg string is less than second in numerical order."
1052 (cond ((string= s1 s2)
1054 ((> (length s1) (length s2))
1056 ((< (length s1) (length s2))
1058 ((< (string-to-number (substring s1 0 1))
1059 (string-to-number (substring s2 0 1)))
1061 ((> (string-to-number (substring s1 0 1))
1062 (string-to-number (substring s2 0 1)))
1065 (nnimap-string-lessp-numerical (substring s1 1) (substring s2 1)))))
1067 (deffoo nnimap-retrieve-groups (groups &optional server)
1068 (when (nnimap-possibly-change-server server)
1069 (gnus-message 5 "nnimap: Checking mailboxes...")
1070 (with-current-buffer nntp-server-buffer
1072 (nnimap-before-find-minmax-bugworkaround)
1073 (let (asyncgroups slowgroups)
1074 (if (null nnimap-retrieve-groups-asynchronous)
1075 (setq slowgroups groups)
1076 (dolist (group groups)
1077 (gnus-message 9 "nnimap: Quickly checking mailbox %s" group)
1078 (add-to-list (if (gnus-gethash-safe
1079 (gnus-group-prefixed-name group server)
1080 nnimap-mailbox-info)
1083 (list group (imap-mailbox-status-asynch
1084 group '(uidvalidity uidnext unseen)
1085 nnimap-server-buffer))))
1086 (dolist (asyncgroup asyncgroups)
1087 (let ((group (nth 0 asyncgroup))
1088 (tag (nth 1 asyncgroup))
1090 (when (imap-ok-p (imap-wait-for-tag tag nnimap-server-buffer))
1091 (if (or (not (string=
1092 (nth 0 (gnus-gethash (gnus-group-prefixed-name
1094 nnimap-mailbox-info))
1095 (imap-mailbox-get 'uidvalidity group
1096 nnimap-server-buffer)))
1098 (nth 1 (gnus-gethash (gnus-group-prefixed-name
1100 nnimap-mailbox-info))
1101 (imap-mailbox-get 'uidnext group
1102 nnimap-server-buffer))))
1103 (push (list group) slowgroups)
1104 (insert (nth 3 (gnus-gethash (gnus-group-prefixed-name
1106 nnimap-mailbox-info))))))))
1107 (dolist (group slowgroups)
1108 (if nnimap-retrieve-groups-asynchronous
1109 (setq group (car group)))
1110 (gnus-message 7 "nnimap: Mailbox %s modified" group)
1111 (imap-mailbox-put 'uidnext nil group nnimap-server-buffer)
1112 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags group
1113 nnimap-server-buffer))
1114 (let* ((info (nnimap-find-minmax-uid group 'examine))
1115 (str (format "\"%s\" %d %d y\n" group
1117 (max 1 (or (nth 1 info) 1)))))
1118 (when (> (or (imap-mailbox-get 'recent group
1119 nnimap-server-buffer) 0)
1121 (push (list (cons group 0)) nnmail-split-history))
1123 (when nnimap-retrieve-groups-asynchronous
1125 (gnus-group-prefixed-name group server)
1126 (list (or (imap-mailbox-get
1127 'uidvalidity group nnimap-server-buffer)
1128 (imap-mailbox-status
1129 group 'uidvalidity nnimap-server-buffer))
1130 (or (imap-mailbox-get
1131 'uidnext group nnimap-server-buffer)
1132 (imap-mailbox-status
1133 group 'uidnext nnimap-server-buffer))
1134 (or (imap-mailbox-get
1135 'unseen group nnimap-server-buffer)
1136 (imap-mailbox-status
1137 group 'unseen nnimap-server-buffer))
1139 nnimap-mailbox-info)))))))
1140 (gnus-message 5 "nnimap: Checking mailboxes...done")
1143 (deffoo nnimap-request-update-info-internal (group info &optional server)
1144 (when (nnimap-possibly-change-group group server)
1145 (when info;; xxx what does this mean? should we create a info?
1146 (with-current-buffer nnimap-server-buffer
1147 (gnus-message 5 "nnimap: Updating info for %s..."
1148 (gnus-info-group info))
1150 (when (nnimap-mark-permanent-p 'read)
1152 ;; read info could contain articles marked unread by other
1153 ;; imap clients! we correct this
1154 (setq seen (gnus-uncompress-range (gnus-info-read info))
1155 unseen (imap-search "UNSEEN UNDELETED")
1156 seen (gnus-set-difference seen unseen)
1157 ;; seen might lack articles marked as read by other
1158 ;; imap clients! we correct this
1159 seen (append seen (imap-search "SEEN"))
1162 seen (gnus-compress-sequence seen t)
1163 ;; we can't return '(1) since this isn't a "list of ranges",
1164 ;; and we can't return '((1)) since g-list-of-unread-articles
1165 ;; is buggy so we return '((1 . 1)).
1166 seen (if (and (integerp (car seen))
1168 (list (cons (car seen) (car seen)))
1170 (gnus-info-set-read info seen)))
1172 (mapcar (lambda (pred)
1173 (when (or (eq (cdr pred) 'recent)
1174 (and (nnimap-mark-permanent-p (cdr pred))
1175 (member (nnimap-mark-to-flag (cdr pred))
1176 (imap-mailbox-get 'flags))))
1177 (gnus-info-set-marks
1179 (gnus-update-alist-soft
1181 (gnus-compress-sequence
1182 (imap-search (nnimap-mark-to-predicate (cdr pred))))
1183 (gnus-info-marks info))
1185 gnus-article-mark-lists)
1187 (when nnimap-importantize-dormant
1188 ;; nnimap mark dormant article as ticked too (for other clients)
1189 ;; so we remove that mark for gnus since we support dormant
1190 (gnus-info-set-marks
1192 (gnus-update-alist-soft
1194 (gnus-remove-from-range
1195 (cdr-safe (assoc 'tick (gnus-info-marks info)))
1196 (cdr-safe (assoc 'dormant (gnus-info-marks info))))
1197 (gnus-info-marks info))
1200 (gnus-message 5 "nnimap: Updating info for %s...done"
1201 (gnus-info-group info))
1205 (deffoo nnimap-request-type (group &optional article)
1206 (if (and nnimap-news-groups (string-match nnimap-news-groups group))
1210 (deffoo nnimap-request-set-mark (group actions &optional server)
1211 (when (nnimap-possibly-change-group group server)
1212 (with-current-buffer nnimap-server-buffer
1214 (gnus-message 7 "nnimap: Setting marks in %s..." group)
1215 (while (setq action (pop actions))
1216 (let ((range (nth 0 action))
1217 (what (nth 1 action))
1218 (cmdmarks (nth 2 action))
1220 ;; bookmark can't be stored (not list/range
1221 (setq cmdmarks (delq 'bookmark cmdmarks))
1222 ;; killed can't be stored (not list/range
1223 (setq cmdmarks (delq 'killed cmdmarks))
1224 ;; unsent are for nndraft groups only
1225 (setq cmdmarks (delq 'unsent cmdmarks))
1226 ;; cache flags are pointless on the server
1227 (setq cmdmarks (delq 'cache cmdmarks))
1228 ;; seen flags are local to each gnus
1229 (setq cmdmarks (delq 'seen cmdmarks))
1230 ;; recent marks can't be set
1231 (setq cmdmarks (delq 'recent cmdmarks))
1232 (when nnimap-importantize-dormant
1233 ;; flag dormant articles as ticked
1234 (if (memq 'dormant cmdmarks)
1235 (setq cmdmarks (cons 'tick cmdmarks))))
1236 ;; remove stuff we are forbidden to store
1237 (mapc (lambda (mark)
1238 (if (imap-message-flag-permanent-p
1239 (nnimap-mark-to-flag mark))
1240 (setq marks (cons mark marks))))
1242 (when (and range marks)
1243 (cond ((eq what 'del)
1244 (imap-message-flags-del
1245 (imap-range-to-message-set range)
1246 (nnimap-mark-to-flag marks nil t)))
1248 (imap-message-flags-add
1249 (imap-range-to-message-set range)
1250 (nnimap-mark-to-flag marks nil t)))
1252 (imap-message-flags-set
1253 (imap-range-to-message-set range)
1254 (nnimap-mark-to-flag marks nil t)))))))
1255 (gnus-message 7 "nnimap: Setting marks in %s...done" group))))
1258 (defun nnimap-split-fancy ()
1259 "Like the function `nnmail-split-fancy', but uses `nnimap-split-fancy'."
1260 (let ((nnmail-split-fancy nnimap-split-fancy))
1261 (nnmail-split-fancy)))
1263 (defun nnimap-split-to-groups (rules)
1264 ;; tries to match all rules in nnimap-split-rule against content of
1265 ;; nntp-server-buffer, returns a list of groups that matched.
1266 (with-current-buffer nntp-server-buffer
1267 ;; Fold continuation lines.
1268 (goto-char (point-min))
1269 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
1270 (replace-match " " t t))
1271 (if (functionp rules)
1273 (let (to-groups regrepp)
1275 (dolist (rule rules to-groups)
1276 (let ((group (car rule))
1277 (regexp (cadr rule)))
1278 (goto-char (point-min))
1279 (when (and (if (stringp regexp)
1281 (if (not (stringp group))
1282 (setq group (eval group))
1284 (string-match "\\\\[0-9&]" group)))
1285 (re-search-forward regexp nil t))
1286 (funcall regexp group))
1287 ;; Don't enter the article into the same group twice.
1288 (not (assoc group to-groups)))
1290 (nnmail-expand-newtext group)
1293 (or nnimap-split-crosspost
1294 (throw 'split-done to-groups))))))))))
1296 (defun nnimap-assoc-match (key alist)
1298 (while (and alist (not element))
1299 (if (string-match (car (car alist)) key)
1300 (setq element (car alist)))
1301 (setq alist (cdr alist)))
1304 (defun nnimap-split-find-rule (server inbox)
1305 (if (and (listp nnimap-split-rule) (listp (car nnimap-split-rule))
1306 (list (cdar nnimap-split-rule)) (listp (cadar nnimap-split-rule)))
1308 (cadr (nnimap-assoc-match inbox (cdr (nnimap-assoc-match
1309 server nnimap-split-rule))))
1312 (defun nnimap-split-find-inbox (server)
1313 (if (listp nnimap-split-inbox)
1315 (list nnimap-split-inbox)))
1317 (defun nnimap-split-articles (&optional group server)
1318 (when (nnimap-possibly-change-server server)
1319 (with-current-buffer nnimap-server-buffer
1320 (let (rule inbox removeorig (inboxes (nnimap-split-find-inbox server)))
1321 ;; iterate over inboxes
1322 (while (and (setq inbox (pop inboxes))
1323 (nnimap-possibly-change-group inbox));; SELECT
1324 ;; find split rule for this server / inbox
1325 (when (setq rule (nnimap-split-find-rule server inbox))
1326 ;; iterate over articles
1327 (dolist (article (imap-search nnimap-split-predicate))
1328 (when (if (if (eq nnimap-split-download-body 'default)
1329 nnimap-split-download-body-default
1330 nnimap-split-download-body)
1331 (and (nnimap-request-article article)
1332 (with-current-buffer nntp-server-buffer (mail-narrow-to-head)))
1333 (nnimap-request-head article))
1334 ;; copy article to right group(s)
1335 (setq removeorig nil)
1336 (dolist (to-group (nnimap-split-to-groups rule))
1337 (cond ((eq to-group 'junk)
1338 (message "IMAP split removed %s:%s:%d" server inbox
1340 (setq removeorig t))
1341 ((imap-message-copy (number-to-string article)
1342 to-group nil 'nocopyuid)
1343 (message "IMAP split moved %s:%s:%d to %s" server
1344 inbox article to-group)
1346 (when nnmail-cache-accepted-message-ids
1347 (with-current-buffer nntp-server-buffer
1350 (nnmail-fetch-field "message-id"))
1351 (nnmail-cache-insert msgid
1353 (nnmail-fetch-field "subject"))))))
1354 ;; Add the group-art list to the history list.
1355 (push (list (cons to-group 0)) nnmail-split-history))
1357 (message "IMAP split failed to move %s:%s:%d to %s"
1358 server inbox article to-group))))
1359 (if (if (eq nnimap-split-download-body 'default)
1360 nnimap-split-download-body-default
1361 nnimap-split-download-body)
1363 ;; remove article if it was successfully copied somewhere
1365 (imap-message-flags-add (format "%d" article)
1366 "\\Seen \\Deleted")))))
1367 (when (imap-mailbox-select inbox);; just in case
1368 ;; todo: UID EXPUNGE (if available) to remove splitted articles
1369 (imap-mailbox-expunge)
1370 (imap-mailbox-close)))
1371 (when nnmail-cache-accepted-message-ids
1372 (nnmail-cache-close))
1375 (deffoo nnimap-request-scan (&optional group server)
1376 (nnimap-split-articles group server))
1378 (deffoo nnimap-request-newgroups (date &optional server)
1379 (when (nnimap-possibly-change-server server)
1380 (with-current-buffer nntp-server-buffer
1381 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s..."
1382 (if (> (length server) 0) " on " "") server)
1384 (nnimap-before-find-minmax-bugworkaround)
1385 (dolist (pattern (nnimap-pattern-to-list-arguments
1386 nnimap-list-pattern))
1387 (dolist (mbx (imap-mailbox-lsub (cdr pattern) (car pattern) nil
1388 nnimap-server-buffer))
1390 (dolist (mailbox (imap-mailbox-get 'list-flags mbx
1391 nnimap-server-buffer))
1392 (if (string= (downcase mailbox) "\\noselect")
1395 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1397 (insert (format "\"%s\" %d %d y\n"
1398 mbx (or (nth 2 info) 0)
1399 (max 1 (or (nth 1 info) 1)))))))))
1400 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s...done"
1401 (if (> (length server) 0) " on " "") server))
1404 (deffoo nnimap-request-create-group (group &optional server args)
1405 (when (nnimap-possibly-change-server server)
1406 (or (imap-mailbox-status group 'uidvalidity nnimap-server-buffer)
1407 (imap-mailbox-create group nnimap-server-buffer)
1408 (nnheader-report 'nnimap "%S"
1409 (imap-error-text nnimap-server-buffer)))))
1411 (defun nnimap-time-substract (time1 time2)
1412 "Return TIME for TIME1 - TIME2."
1413 (let* ((ms (- (car time1) (car time2)))
1414 (ls (- (nth 1 time1) (nth 1 time2))))
1416 (list (- ms 1) (+ (expt 2 16) ls))
1419 (defun nnimap-date-days-ago (daysago)
1420 "Return date, in format \"3-Aug-1998\", for DAYSAGO days ago."
1421 (let* ((time (nnimap-time-substract (current-time) (days-to-time daysago)))
1422 (date (format-time-string
1423 (format "%%d-%s-%%Y"
1424 (capitalize (car (rassoc (nth 4 (decode-time time))
1425 parse-time-months))))
1427 (if (eq ?0 (string-to-char date))
1431 (defun nnimap-request-expire-articles-progress ()
1432 (gnus-message 5 "nnimap: Marking article %d for deletion..."
1433 imap-current-message))
1435 (defun nnimap-expiry-target (arts group server)
1436 (unless (eq nnmail-expiry-target 'delete)
1439 (nnimap-request-article art group server (current-buffer))
1440 ;; hints for optimization in `nnimap-request-accept-article'
1441 (let ((nnimap-current-move-article art)
1442 (nnimap-current-move-group group)
1443 (nnimap-current-move-server server))
1444 (nnmail-expiry-target-group nnmail-expiry-target group))))
1445 ;; It is not clear if `nnmail-expiry-target' somehow cause the
1446 ;; current group to be changed or not, so we make sure here.
1447 (nnimap-possibly-change-group group server)))
1449 ;; Notice that we don't actually delete anything, we just mark them deleted.
1450 (deffoo nnimap-request-expire-articles (articles group &optional server force)
1451 (let ((artseq (gnus-compress-sequence articles)))
1452 (when (and artseq (nnimap-possibly-change-group group server))
1453 (with-current-buffer nnimap-server-buffer
1454 (let ((days (or (and nnmail-expiry-wait-function
1455 (funcall nnmail-expiry-wait-function group))
1456 nnmail-expiry-wait)))
1457 (cond ((or force (eq days 'immediate))
1458 (let ((oldarts (imap-search
1460 (imap-range-to-message-set artseq)))))
1462 (nnimap-expiry-target oldarts group server)
1463 (when (imap-message-flags-add
1464 (imap-range-to-message-set
1465 (gnus-compress-sequence oldarts)) "\\Deleted")
1466 (setq articles (gnus-set-difference
1467 articles oldarts))))))
1469 (let ((oldarts (imap-search
1470 (format nnimap-expunge-search-string
1471 (imap-range-to-message-set artseq)
1472 (nnimap-date-days-ago days))))
1473 (imap-fetch-data-hook
1474 '(nnimap-request-expire-articles-progress)))
1476 (nnimap-expiry-target oldarts group server)
1477 (when (imap-message-flags-add
1478 (imap-range-to-message-set
1479 (gnus-compress-sequence oldarts)) "\\Deleted")
1480 (setq articles (gnus-set-difference
1481 articles oldarts)))))))))))
1482 ;; return articles not deleted
1485 (deffoo nnimap-request-move-article (article group server
1486 accept-form &optional last)
1487 (when (nnimap-possibly-change-server server)
1489 (let ((buf (get-buffer-create " *nnimap move*"))
1490 (nnimap-current-move-article article)
1491 (nnimap-current-move-group group)
1492 (nnimap-current-move-server nnimap-current-server)
1494 (and (nnimap-request-article article group server)
1497 (buffer-disable-undo (current-buffer))
1498 (insert-buffer-substring nntp-server-buffer)
1499 (setq result (eval accept-form))
1502 (imap-message-flags-add
1503 (imap-range-to-message-set (list article))
1504 "\\Deleted" 'silent nnimap-server-buffer))
1507 (deffoo nnimap-request-accept-article (group &optional server last)
1508 (when (nnimap-possibly-change-server server)
1511 (if (string= nnimap-current-server nnimap-current-move-server)
1512 ;; moving article within same server, speed it up...
1513 (and (nnimap-possibly-change-group
1514 nnimap-current-move-group)
1515 (imap-message-copy (number-to-string
1516 nnimap-current-move-article)
1517 group 'dontcreate nil
1518 nnimap-server-buffer))
1519 (with-current-buffer (current-buffer)
1520 (goto-char (point-min))
1521 ;; remove any 'From blabla' lines, some IMAP servers
1522 ;; reject the entire message otherwise.
1523 (when (looking-at "^From[^:]")
1524 (delete-region (point) (progn (forward-line) (point))))
1525 ;; turn into rfc822 format (\r\n eol's)
1526 (while (search-forward "\n" nil t)
1527 (replace-match "\r\n"))
1528 (when nnmail-cache-accepted-message-ids
1529 (nnmail-cache-insert (nnmail-fetch-field "message-id")
1531 (nnmail-fetch-field "subject"))))
1532 (when (and last nnmail-cache-accepted-message-ids)
1533 (nnmail-cache-close))
1534 ;; this 'or' is for Cyrus server bug
1535 (or (null (imap-current-mailbox nnimap-server-buffer))
1536 (imap-mailbox-unselect nnimap-server-buffer))
1537 (imap-message-append group (current-buffer) nil nil
1538 nnimap-server-buffer)))
1539 (cons group (nth 1 uid))
1540 (nnheader-report 'nnimap (imap-error-text nnimap-server-buffer))))))
1542 (deffoo nnimap-request-delete-group (group force &optional server)
1543 (when (nnimap-possibly-change-server server)
1544 (with-current-buffer nnimap-server-buffer
1546 (or (null (imap-mailbox-status group 'uidvalidity))
1547 (imap-mailbox-delete group))
1551 (deffoo nnimap-request-rename-group (group new-name &optional server)
1552 (when (nnimap-possibly-change-server server)
1553 (imap-mailbox-rename group new-name nnimap-server-buffer)))
1555 (defun nnimap-expunge (mailbox server)
1556 (when (nnimap-possibly-change-group mailbox server)
1557 (imap-mailbox-expunge nil nnimap-server-buffer)))
1559 (defun nnimap-acl-get (mailbox server)
1560 (when (nnimap-possibly-change-server server)
1561 (and (imap-capability 'ACL nnimap-server-buffer)
1562 (imap-mailbox-acl-get mailbox nnimap-server-buffer))))
1564 (defun nnimap-acl-edit (mailbox method old-acls new-acls)
1565 (when (nnimap-possibly-change-server (cadr method))
1566 (unless (imap-capability 'ACL nnimap-server-buffer)
1567 (error "Your server does not support ACL editing"))
1568 (with-current-buffer nnimap-server-buffer
1569 ;; delete all removed identifiers
1570 (mapc (lambda (old-acl)
1571 (unless (assoc (car old-acl) new-acls)
1572 (or (imap-mailbox-acl-delete (car old-acl) mailbox)
1573 (error "Can't delete ACL for %s" (car old-acl)))))
1575 ;; set all changed acl's
1576 (mapc (lambda (new-acl)
1577 (let ((new-rights (cdr new-acl))
1578 (old-rights (cdr (assoc (car new-acl) old-acls))))
1579 (unless (and old-rights new-rights
1580 (string= old-rights new-rights))
1581 (or (imap-mailbox-acl-set (car new-acl) new-rights mailbox)
1582 (error "Can't set ACL for %s to %s" (car new-acl)
1588 ;;; Internal functions
1591 ;; This is confusing.
1593 ;; mark => read, tick, draft, reply etc
1594 ;; flag => "\\Seen", "\\Flagged", "\\Draft", "gnus-expire" etc
1595 ;; predicate => "SEEN", "FLAGGED", "DRAFT", "KEYWORD gnus-expire" etc
1597 ;; Mark should not really contain 'read since it's not a "mark" in the Gnus
1598 ;; world, but we cheat. Mark == gnus-article-mark-lists + '(read . read).
1601 (defconst nnimap-mark-to-predicate-alist
1603 (lambda (pair) ; cdr is the mark
1604 (or (assoc (cdr pair)
1609 (reply . "ANSWERED")))
1611 (format "KEYWORD gnus-%s" (symbol-name (cdr pair))))))
1612 (cons '(read . read) gnus-article-mark-lists)))
1614 (defun nnimap-mark-to-predicate (pred)
1615 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP predicate.
1616 This is a string such as \"SEEN\", \"FLAGGED\", \"KEYWORD gnus-expire\",
1617 to be used within a IMAP SEARCH query."
1618 (cdr (assq pred nnimap-mark-to-predicate-alist)))
1620 (defconst nnimap-mark-to-flag-alist
1623 (or (assoc (cdr pair)
1625 (tick . "\\Flagged")
1627 (recent . "\\Recent")
1628 (reply . "\\Answered")))
1630 (format "gnus-%s" (symbol-name (cdr pair))))))
1631 (cons '(read . read) gnus-article-mark-lists)))
1633 (defun nnimap-mark-to-flag-1 (preds)
1634 (if (and (not (null preds)) (listp preds))
1635 (cons (nnimap-mark-to-flag (car preds))
1636 (nnimap-mark-to-flag (cdr preds)))
1637 (cdr (assoc preds nnimap-mark-to-flag-alist))))
1639 (defun nnimap-mark-to-flag (preds &optional always-list make-string)
1640 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP flag.
1641 This is a string such as \"\\Seen\", \"\\Flagged\", \"gnus-expire\", to
1642 be used in a STORE FLAGS command."
1643 (let ((result (nnimap-mark-to-flag-1 preds)))
1644 (setq result (if (and (or make-string always-list)
1645 (not (listp result)))
1649 (mapconcat (lambda (flag)
1651 (mapconcat 'identity flag " ")
1656 (defun nnimap-mark-permanent-p (mark &optional group)
1657 "Return t iff MARK can be permanently (between IMAP sessions) saved on articles, in GROUP."
1658 (imap-message-flag-permanent-p (nnimap-mark-to-flag mark)))
1662 (buffer-disable-undo (get-buffer-create nnimap-debug-buffer))
1663 (mapcar (lambda (f) (trace-function-background f nnimap-debug-buffer))
1665 nnimap-possibly-change-server
1666 nnimap-verify-uidvalidity
1667 nnimap-find-minmax-uid
1668 nnimap-before-find-minmax-bugworkaround
1669 nnimap-possibly-change-group
1670 ;;nnimap-replace-whitespace
1671 nnimap-retrieve-headers-progress
1672 nnimap-retrieve-which-headers
1673 nnimap-group-overview-filename
1674 nnimap-retrieve-headers-from-file
1675 nnimap-retrieve-headers-from-server
1676 nnimap-retrieve-headers
1677 nnimap-open-connection
1679 nnimap-server-opened
1681 nnimap-request-close
1682 nnimap-status-message
1684 nnimap-request-article-part
1685 nnimap-request-article
1688 nnimap-request-group
1690 nnimap-pattern-to-list-arguments
1693 nnimap-retrieve-groups
1694 nnimap-request-update-info-internal
1696 nnimap-request-set-mark
1697 nnimap-split-to-groups
1698 nnimap-split-find-rule
1699 nnimap-split-find-inbox
1700 nnimap-split-articles
1702 nnimap-request-newgroups
1703 nnimap-request-create-group
1704 nnimap-time-substract
1705 nnimap-date-days-ago
1706 nnimap-request-expire-articles-progress
1707 nnimap-request-expire-articles
1708 nnimap-request-move-article
1709 nnimap-request-accept-article
1710 nnimap-request-delete-group
1711 nnimap-request-rename-group
1712 gnus-group-nnimap-expunge
1713 gnus-group-nnimap-edit-acl
1714 gnus-group-nnimap-edit-acl-done
1715 nnimap-group-mode-hook
1716 nnimap-mark-to-predicate
1717 nnimap-mark-to-flag-1
1719 nnimap-mark-permanent-p
1724 ;;; nnimap.el ends here