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
73 (eval-when-compile (require 'cl))
77 (defconst nnimap-version "nnimap 1.0")
80 "Reading IMAP mail with Gnus."
83 (defvoo nnimap-address nil
84 "Address of physical IMAP server. If nil, use the virtual server's name.")
86 (defvoo nnimap-server-port nil
87 "Port number on physical IMAP server.
88 If nil, defaults to 993 for TLS/SSL connections and 143 otherwise.")
90 ;; Splitting variables
92 (defcustom nnimap-split-crosspost t
93 "If non-nil, do crossposting if several split methods match the mail.
94 If nil, the first match found will be used."
98 (defcustom nnimap-split-inbox nil
99 "Name of mailbox to split mail from.
101 Mail is read from this mailbox and split according to rules in
104 This can be a string or a list of strings."
106 :type '(choice (string)
109 (define-widget 'nnimap-strict-function 'function
110 "This widget only matches values that are functionp.
112 Warning: This means that a value that is the symbol of a not yet
113 loaded function will not match. Use with care."
114 :match 'nnimap-strict-function-match)
116 (defun nnimap-strict-function-match (widget value)
117 "Ignoring WIDGET, match if VALUE is a function."
120 (defcustom nnimap-split-rule nil
121 "Mail will be split according to these rules.
123 Mail is read from mailbox(es) specified in `nnimap-split-inbox'.
125 If you'd like, for instance, one mail group for mail from the
126 \"gnus-imap\" mailing list, one group for junk mail and leave
127 everything else in the incoming mailbox, you could do something like
130 \(setq nnimap-split-rule '((\"INBOX.gnus-imap\" \"From:.*gnus-imap\")
131 (\"INBOX.junk\" \"Subject:.*buy\")))
133 As you can see, `nnimap-split-rule' is a list of lists, where the
134 first element in each \"rule\" is the name of the IMAP mailbox (or the
135 symbol `junk' if you want to remove the mail), and the second is a
136 regexp that nnimap will try to match on the header to find a fit.
138 The second element can also be a function. In that case, it will be
139 called narrowed to the headers with the first element of the rule as
140 the argument. It should return a non-nil value if it thinks that the
141 mail belongs in that group.
143 This variable can also have a function as its value, the function will
144 be called with the headers narrowed and should return a group where it
145 thinks the article should be splitted to. See `nnimap-split-fancy'.
147 To allow for different split rules on different virtual servers, and
148 even different split rules in different inboxes on the same server,
149 the syntax of this variable have been extended along the lines of:
151 \(setq nnimap-split-rule
152 '((\"my1server\" (\".*\" ((\"ding\" \"ding@gnus.org\")
153 (\"junk\" \"From:.*Simon\")))
154 (\"my2server\" (\"INBOX\" nnimap-split-fancy))
155 (\"my[34]server\" (\".*\" ((\"private\" \"To:.*Simon\")
156 (\"junk\" my-junk-func)))))
158 The virtual server name is in fact a regexp, so that the same rules
159 may apply to several servers. In the example, the servers
160 \"my3server\" and \"my4server\" both use the same rules. Similarly,
161 the inbox string is also a regexp. The actual splitting rules are as
162 before, either a function, or a list with group/regexp or
163 group/function elements."
165 :type '(choice :tag "Rule type"
166 (repeat :menu-tag "Single-server"
167 :tag "Single-server list"
168 (list (string :tag "Mailbox")
169 (choice :tag "Predicate"
170 (regexp :tag "A regexp")
171 (nnimap-strict-function :tag "A function"))))
172 (choice :menu-tag "A function"
174 (function-item nnimap-split-fancy)
175 (function-item nnmail-split-fancy)
176 (nnimap-strict-function :tag "User-defined function"))
177 (repeat :menu-tag "Multi-server (extended)"
178 :tag "Multi-server list"
179 (list (regexp :tag "Server regexp")
180 (list (regexp :tag "Incoming Mailbox regexp")
181 (repeat :tag "Rules for matching server(s) and mailbox(es)"
182 (list (string :tag "Destination mailbox")
183 (choice :tag "Predicate"
184 (regexp :tag "A Regexp")
185 (nnimap-strict-function :tag "A Function")))))))))
187 (defcustom nnimap-split-predicate "UNSEEN UNDELETED"
188 "The predicate used to find articles to split.
189 If you use another IMAP client to peek on articles but always would
190 like nnimap to split them once it's started, you could change this to
191 \"UNDELETED\". Other available predicates are available in
192 RFC2060 section 6.4.4."
196 (defcustom nnimap-split-fancy nil
197 "Like the variable `nnmail-split-fancy'."
201 (defvar nnimap-split-download-body-default nil
202 "Internal variable with default value for `nnimap-split-download-body'.")
204 (defcustom nnimap-split-download-body 'default
205 "Whether to download entire articles during splitting.
206 This is generally not required, and will slow things down considerably.
207 You may need it if you want to use an advanced splitting function that
208 analyses the body before splitting the article.
209 If this variable is nil, bodies will not be downloaded; if this
210 variable is the symbol `default' the default behaviour is
211 used (which currently is nil, unless you use a statistical
212 spam.el test); if this variable is another non-nil value bodies
215 :type '(choice (const :tag "Let system decide" deault)
218 ;; Performance / bug workaround variables
220 (defcustom nnimap-close-asynchronous t
221 "Close mailboxes asynchronously in `nnimap-close-group'.
222 This means that errors cought by nnimap when closing the mailbox will
223 not prevent Gnus from updating the group status, which may be harmful.
224 However, it increases speed."
228 (defcustom nnimap-dont-close t
229 "Never close mailboxes.
230 This increases the speed of closing mailboxes (quiting group) but may
231 decrease the speed of selecting another mailbox later. Re-selecting
232 the same mailbox will be faster though."
236 (defcustom nnimap-retrieve-groups-asynchronous t
237 "Send asynchronous STATUS commands for each mailbox before checking mail.
238 If you have mailboxes that rarely receives mail, this speeds up new
239 mail checking. It works by first sending STATUS commands for each
240 mailbox, and then only checking groups which has a modified UIDNEXT
241 more carefully for new mail.
243 In summary, the default is O((1-p)*k+p*n) and changing it to nil makes
244 it O(n). If p is small, then the default is probably faster."
248 (defvoo nnimap-need-unselect-to-notice-new-mail nil
249 "Unselect mailboxes before looking for new mail in them.
250 Some servers seem to need this under some circumstances.")
252 ;; Authorization / Privacy variables
254 (defvoo nnimap-auth-method nil
257 (defvoo nnimap-stream nil
258 "How nnimap will connect to the server.
260 The default, nil, will try to use the \"best\" method the server can
265 1) you want to connect with TLS/SSL. The TLS/SSL integration
266 with IMAP is suboptimal so you'll have to tell it
269 2) your server is more capable than your environment -- i.e. your
270 server accept Kerberos login's but you haven't installed the
271 `imtest' program or your machine isn't configured for Kerberos.
273 Possible choices: gssapi, kerberos4, starttls, tls, ssl, network, shell.
274 See also `imap-streams' and `imap-stream-alist'.")
276 (defvoo nnimap-authenticator nil
277 "How nnimap authenticate itself to the server.
279 The default, nil, will try to use the \"best\" method the server can
282 There is only one reason for fiddling with this variable, and that is
283 if your server is more capable than your environment -- i.e. you
284 connect to a server that accept Kerberos login's but you haven't
285 installed the `imtest' program or your machine isn't configured for
288 Possible choices: gssapi, kerberos4, digest-md5, cram-md5, login, anonymous.
289 See also `imap-authenticators' and `imap-authenticator-alist'")
291 (defvoo nnimap-directory (nnheader-concat gnus-directory "overview/")
292 "Directory to keep NOV cache files for nnimap groups.
293 See also `nnimap-nov-file-name'.")
295 (defvoo nnimap-nov-file-name "nnimap."
296 "NOV cache base filename.
297 The group name and `nnimap-nov-file-name-suffix' will be appended. A
298 typical complete file name would be
299 ~/News/overview/nnimap.pdc.INBOX.ding.nov, or
300 ~/News/overview/nnimap/pdc/INBOX/ding/nov if
301 `nnmail-use-long-file-names' is nil")
303 (defvoo nnimap-nov-file-name-suffix ".novcache"
304 "Suffix for NOV cache base filename.")
306 (defvoo nnimap-nov-is-evil gnus-agent
307 "If non-nil, never generate or use a local nov database for this backend.
308 Using nov databases should speed up header fetching considerably.
309 However, it will invoke a UID SEARCH UID command on the server, and
310 some servers implement this command inefficiently by opening each and
311 every message in the group, thus making it quite slow.
312 Unlike other backends, you do not need to take special care if you
313 flip this variable.")
315 (defvoo nnimap-expunge-on-close 'always ; 'ask, 'never
316 "Whether to expunge a group when it is closed.
317 When a IMAP group with articles marked for deletion is closed, this
318 variable determine if nnimap should actually remove the articles or
321 If always, nnimap always perform a expunge when closing the group.
322 If never, nnimap never expunges articles marked for deletion.
323 If ask, nnimap will ask you if you wish to expunge marked articles.
325 When setting this variable to `never', you can only expunge articles
326 by using `G x' (gnus-group-nnimap-expunge) from the Group buffer.")
328 (defvoo nnimap-list-pattern "*"
329 "A string LIMIT or list of strings with mailbox wildcards used to limit available groups.
330 See below for available wildcards.
332 The LIMIT string can be a cons cell (REFERENCE . LIMIT), where
333 REFERENCE will be passed as the first parameter to LIST/LSUB. The
334 semantics of this are server specific, on the University of Washington
335 server you can specify a directory.
338 '(\"INBOX\" \"mail/*\" (\"~friend/mail/\" . \"list/*\"))
340 There are two wildcards * and %. * matches everything, % matches
341 everything in the current hierarchy.")
343 (defvoo nnimap-news-groups nil
344 "IMAP support a news-like mode, also known as bulletin board mode,
345 where replies is sent via IMAP instead of SMTP.
347 This variable should contain a regexp matching groups where you wish
348 replies to be stored to the mailbox directly.
351 '(\"^[^I][^N][^B][^O][^X].*$\")
353 This will match all groups not beginning with \"INBOX\".
355 Note that there is nothing technically different between mail-like and
356 news-like mailboxes. If you wish to have a group with todo items or
357 similar which you wouldn't want to set up a mailing list for, you can
358 use this to make replies go directly to the group.")
360 (defvoo nnimap-expunge-search-string "UID %s NOT SINCE %s"
361 "IMAP search command to use for articles that are to be expired.
362 The first %s is replaced by a UID set of articles to search on,
363 and the second %s is replaced by a date criterium.
365 One useful (and perhaps the only useful) value to change this to would
366 be `UID %s NOT SENTSINCE %s' to make nnimap use the Date: header
367 instead of the internal date of messages. See section 6.4.4 of RFC
368 2060 for more information on valid strings.")
370 (defvoo nnimap-importantize-dormant t
371 "If non-nil, mark \"dormant\" articles as \"ticked\" for other IMAP clients.
372 Note that within Gnus, dormant articles will still (only) be
373 marked as ticked. This is to make \"dormant\" articles stand out,
374 just like \"ticked\" articles, in other IMAP clients.")
376 (defvoo nnimap-server-address nil
377 "Obsolete. Use `nnimap-address'.")
379 (defcustom nnimap-authinfo-file "~/.authinfo"
380 "Authorization information for IMAP servers. In .netrc format."
383 (repeat :tag "Entries"
386 :value ("" ("login" . "") ("password" . ""))
390 (const :format "" "login")
391 (string :format "Login: %v"))
393 (const :format "" "password")
394 (string :format "Password: %v"))))))
397 (defcustom nnimap-prune-cache t
398 "If non-nil, nnimap check whether articles still exist on server before using data stored in NOV cache."
402 (defvar nnimap-request-list-method 'imap-mailbox-list
403 "Method to use to request a list of all folders from the server.
404 If this is 'imap-mailbox-lsub, then use a server-side subscription list to
405 restrict visible folders.")
407 (defcustom nnimap-id nil
408 "Plist with client identity to send to server upon login.
409 Nil means no information is sent, symbol `no' to disable ID query
410 alltogheter, or plist with identifier-value pairs to send to
411 server. RFC 2971 describes the list as follows:
413 Any string may be sent as a field, but the following are defined to
414 describe certain values that might be sent. Implementations are free
415 to send none, any, or all of these. Strings are not case-sensitive.
416 Field strings MUST NOT be longer than 30 octets. Value strings MUST
417 NOT be longer than 1024 octets. Implementations MUST NOT send more
418 than 30 field-value pairs.
420 name Name of the program
421 version Version number of the program
422 os Name of the operating system
423 os-version Version of the operating system
424 vendor Vendor of the client/server
425 support-url URL to contact for support
426 address Postal address of contact/vendor
427 date Date program was released, specified as a date-time
429 command Command used to start the program
430 arguments Arguments supplied on the command line, if any
432 environment Description of environment, i.e., UNIX environment
433 variables or Windows registry settings
435 Implementations MUST NOT send the same field name more than once.
437 An example plist would be '(\"name\" \"Gnus\" \"version\" gnus-version-number
438 \"os\" system-configuration \"vendor\" \"GNU\")."
440 :type '(choice (const :tag "No information" nil)
441 (const :tag "Disable ID query" no)
442 (plist :key-type string :value-type string)))
444 (defcustom nnimap-debug nil
445 "If non-nil, random debug spews are placed in *nnimap-debug* buffer."
449 ;; Internal variables:
451 (defvar nnimap-debug-buffer "*nnimap-debug*")
452 (defvar nnimap-mailbox-info (gnus-make-hashtable 997))
453 (defvar nnimap-current-move-server nil)
454 (defvar nnimap-current-move-group nil)
455 (defvar nnimap-current-move-article nil)
456 (defvar nnimap-length)
457 (defvar nnimap-progress-chars '(?| ?/ ?- ?\\))
458 (defvar nnimap-progress-how-often 20)
459 (defvar nnimap-counter)
460 (defvar nnimap-server-buffer-alist nil) ;; Map server name to buffers.
461 (defvar nnimap-current-server nil) ;; Current server
462 (defvar nnimap-server-buffer nil) ;; Current servers' buffer
466 (nnoo-define-basics nnimap)
468 ;; Utility functions:
470 (defsubst nnimap-get-server-buffer (server)
471 "Return buffer for SERVER, if nil use current server."
472 (cadr (assoc (or server nnimap-current-server) nnimap-server-buffer-alist)))
474 (defun nnimap-possibly-change-server (server)
475 "Return buffer for SERVER, changing the current server as a side-effect.
476 If SERVER is nil, uses the current server."
477 (setq nnimap-current-server (or server nnimap-current-server)
478 nnimap-server-buffer (nnimap-get-server-buffer nnimap-current-server)))
480 (defun nnimap-verify-uidvalidity (group server)
481 "Verify stored uidvalidity match current one in GROUP on SERVER."
482 (let* ((gnusgroup (gnus-group-prefixed-name
483 group (gnus-server-to-method
484 (format "nnimap:%s" server))))
485 (new-uidvalidity (imap-mailbox-get 'uidvalidity))
486 (old-uidvalidity (gnus-group-get-parameter gnusgroup 'uidvalidity))
487 (dir (file-name-as-directory (expand-file-name nnimap-directory)))
488 (nameuid (nnheader-translate-file-chars
489 (concat nnimap-nov-file-name
490 (if (equal server "")
492 server) "." group "." old-uidvalidity
493 nnimap-nov-file-name-suffix) t))
494 (file (if (or nnmail-use-long-file-names
495 (file-exists-p (expand-file-name nameuid dir)))
496 (expand-file-name nameuid dir)
498 (mm-encode-coding-string
499 (nnheader-replace-chars-in-string nameuid ?. ?/)
500 nnmail-pathname-coding-system)
503 (if (not (equal old-uidvalidity new-uidvalidity))
505 (gnus-delete-file file)
506 (gnus-group-set-parameter gnusgroup 'uidvalidity new-uidvalidity)
508 (gnus-group-add-parameter gnusgroup (cons 'uidvalidity new-uidvalidity))
511 (defun nnimap-before-find-minmax-bugworkaround ()
512 "Function called before iterating through mailboxes with
513 `nnimap-find-minmax-uid'."
514 (when nnimap-need-unselect-to-notice-new-mail
515 ;; XXX this is for UoW imapd problem, it doesn't notice new mail in
516 ;; currently selected mailbox without a re-select/examine.
517 (or (null (imap-current-mailbox nnimap-server-buffer))
518 (imap-mailbox-unselect nnimap-server-buffer))))
520 (defun nnimap-find-minmax-uid (group &optional examine)
521 "Find lowest and highest active article number in GROUP.
522 If EXAMINE is non-nil the group is selected read-only."
523 (with-current-buffer nnimap-server-buffer
524 (when (or (string= group (imap-current-mailbox))
525 (imap-mailbox-select group examine))
527 (when (> (imap-mailbox-get 'exists) 0)
528 (imap-fetch "1,*" "UID" nil 'nouidfetch)
529 (imap-message-map (lambda (uid Uid)
530 (setq minuid (if minuid (min minuid uid) uid)
531 maxuid (if maxuid (max maxuid uid) uid)))
533 (list (imap-mailbox-get 'exists) minuid maxuid)))))
535 (defun nnimap-possibly-change-group (group &optional server)
536 "Make GROUP the current group, and SERVER the current server."
537 (when (nnimap-possibly-change-server server)
538 (with-current-buffer nnimap-server-buffer
539 (if (or (null group) (imap-current-mailbox-p group))
541 (if (imap-mailbox-select group)
542 (if (or (nnimap-verify-uidvalidity
543 group (or server nnimap-current-server))
544 (zerop (imap-mailbox-get 'exists group))
545 t ;; for OGnus to see if ignoring uidvalidity
546 ;; changes has any bad effects.
549 "nnimap: Group %s is not uidvalid. Continue? " group)))
551 (imap-mailbox-unselect)
552 (error "nnimap: Group %s is not uid-valid" group))
553 (nnheader-report 'nnimap (imap-error-text)))))))
555 (defun nnimap-replace-whitespace (string)
556 "Return STRING with all whitespace replaced with space."
558 (while (string-match "[\r\n\t]+" string)
559 (setq string (replace-match " " t t string)))
562 ;; Required backend functions
564 (defun nnimap-retrieve-headers-progress ()
565 "Hook to insert NOV line for current article into `nntp-server-buffer'."
566 (and (numberp nnmail-large-newsgroup)
567 (zerop (% (incf nnimap-counter) nnimap-progress-how-often))
568 (> nnimap-length nnmail-large-newsgroup)
569 (nnheader-message 6 "nnimap: Retrieving headers... %c"
570 (nth (/ (% nnimap-counter
571 (* (length nnimap-progress-chars)
572 nnimap-progress-how-often))
573 nnimap-progress-how-often)
574 nnimap-progress-chars)))
575 (with-current-buffer nntp-server-buffer
576 (let (headers lines chars uid mbx)
577 (with-current-buffer nnimap-server-buffer
578 (setq uid imap-current-message
579 mbx imap-current-mailbox
580 headers (nnimap-demule
581 (if (imap-capability 'IMAP4rev1)
582 ;; xxx don't just use car? alist doesn't contain
583 ;; anything else now, but it might...
584 (nth 2 (car (imap-message-get uid 'BODYDETAIL)))
585 (imap-message-get uid 'RFC822.HEADER)))
586 lines (imap-body-lines (imap-message-body imap-current-message))
587 chars (imap-message-get imap-current-message 'RFC822.SIZE)))
590 (buffer-disable-undo)
592 (let ((head (nnheader-parse-naked-head uid)))
593 (mail-header-set-number head uid)
594 (mail-header-set-chars head chars)
595 (mail-header-set-lines head lines)
596 (mail-header-set-xref
597 head (format "%s %s:%d" (system-name) mbx uid))
600 (defun nnimap-retrieve-which-headers (articles fetch-old)
601 "Get a range of articles to fetch based on ARTICLES and FETCH-OLD."
602 (with-current-buffer nnimap-server-buffer
603 (if (numberp (car-safe articles))
606 (imap-range-to-message-set
607 (gnus-compress-sequence
608 (append (gnus-uncompress-sequence
610 (cons (if (numberp fetch-old)
611 (max 1 (- (car articles) fetch-old))
613 (1- (car articles)))))
615 (mapcar (lambda (msgid)
617 (format "HEADER Message-Id \"%s\"" msgid)))
620 (defun nnimap-group-overview-filename (group server)
621 "Make file name for GROUP on SERVER."
622 (let* ((dir (file-name-as-directory (expand-file-name nnimap-directory)))
623 (uidvalidity (gnus-group-get-parameter
624 (gnus-group-prefixed-name
625 group (gnus-server-to-method
626 (format "nnimap:%s" server)))
628 (name (nnheader-translate-file-chars
629 (concat nnimap-nov-file-name
630 (if (equal server "")
632 server) "." group nnimap-nov-file-name-suffix) t))
633 (nameuid (nnheader-translate-file-chars
634 (concat nnimap-nov-file-name
635 (if (equal server "")
637 server) "." group "." uidvalidity
638 nnimap-nov-file-name-suffix) t))
639 (oldfile (if (or nnmail-use-long-file-names
640 (file-exists-p (expand-file-name name dir)))
641 (expand-file-name name dir)
643 (mm-encode-coding-string
644 (nnheader-replace-chars-in-string name ?. ?/)
645 nnmail-pathname-coding-system)
647 (newfile (if (or nnmail-use-long-file-names
648 (file-exists-p (expand-file-name nameuid dir)))
649 (expand-file-name nameuid dir)
651 (mm-encode-coding-string
652 (nnheader-replace-chars-in-string nameuid ?. ?/)
653 nnmail-pathname-coding-system)
655 (when (and (file-exists-p oldfile) (not (file-exists-p newfile)))
656 (message "nnimap: Upgrading novcache filename...")
658 (gnus-make-directory (file-name-directory newfile))
659 (unless (ignore-errors (rename-file oldfile newfile) t)
660 (if (ignore-errors (copy-file oldfile newfile) t)
661 (delete-file oldfile)
662 (error "Can't rename `%s' to `%s'" oldfile newfile))))
665 (defun nnimap-retrieve-headers-from-file (group server)
666 (with-current-buffer nntp-server-buffer
667 (let ((nov (nnimap-group-overview-filename group server)))
668 (when (file-exists-p nov)
669 (mm-insert-file-contents nov)
670 (set-buffer-modified-p nil)
671 (let ((min (ignore-errors (goto-char (point-min))
672 (read (current-buffer))))
673 (max (ignore-errors (goto-char (point-max))
675 (read (current-buffer)))))
676 (if (and (numberp min) (numberp max))
678 ;; junk, remove it, it's saved later
682 (defun nnimap-retrieve-headers-from-server (articles group server)
683 (with-current-buffer nnimap-server-buffer
684 (let ((imap-fetch-data-hook '(nnimap-retrieve-headers-progress))
685 (nnimap-length (gnus-range-length articles))
687 (imap-fetch (imap-range-to-message-set articles)
688 (concat "(UID RFC822.SIZE BODY "
690 (append '(Subject From Date Message-Id
691 References In-Reply-To Xref)
693 nnmail-extra-headers))))
694 (if (imap-capability 'IMAP4rev1)
695 (format "BODY.PEEK[HEADER.FIELDS %s])" headers)
696 (format "RFC822.HEADER.LINES %s)" headers)))))
697 (and (numberp nnmail-large-newsgroup)
698 (> nnimap-length nnmail-large-newsgroup)
699 (nnheader-message 6 "nnimap: Retrieving headers...done")))))
701 (defun nnimap-dont-use-nov-p (group server)
702 (or gnus-nov-is-evil nnimap-nov-is-evil
703 (unless (and (gnus-make-directory
705 (nnimap-group-overview-filename group server)))
707 (nnimap-group-overview-filename group server)))
708 (message "nnimap: Nov cache not writable, %s"
709 (nnimap-group-overview-filename group server)))))
711 (deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
712 (when (nnimap-possibly-change-group group server)
713 (with-current-buffer nntp-server-buffer
715 (if (nnimap-dont-use-nov-p group server)
716 (nnimap-retrieve-headers-from-server
717 (gnus-compress-sequence articles) group server)
718 (let (uids cached low high)
719 (when (setq uids (nnimap-retrieve-which-headers articles fetch-old)
721 high (car (last uids)))
722 (if (setq cached (nnimap-retrieve-headers-from-file group server))
724 ;; fetch articles with uids before cache block
725 (when (< low (car cached))
726 (goto-char (point-min))
727 (nnimap-retrieve-headers-from-server
728 (cons low (1- (car cached))) group server))
729 ;; fetch articles with uids after cache block
730 (when (> high (cdr cached))
731 (goto-char (point-max))
732 (nnimap-retrieve-headers-from-server
733 (cons (1+ (cdr cached)) high) group server))
734 (when nnimap-prune-cache
735 ;; remove nov's for articles which has expired on server
736 (goto-char (point-min))
737 (dolist (uid (gnus-set-difference articles uids))
738 (when (re-search-forward (format "^%d\t" uid) nil t)
739 (gnus-delete-line)))))
740 ;; nothing cached, fetch whole range from server
741 (nnimap-retrieve-headers-from-server
742 (cons low high) group server))
743 (when (buffer-modified-p)
745 (point-min) (point-max)
746 (nnimap-group-overview-filename group server) nil 'nomesg))
747 (nnheader-nov-delete-outside-range low high))))
750 (defun nnimap-open-connection (server)
751 (if (not (imap-open nnimap-address nnimap-server-port nnimap-stream
752 nnimap-authenticator nnimap-server-buffer))
753 (nnheader-report 'nnimap "Can't open connection to server %s" server)
754 (unless (or (imap-capability 'IMAP4 nnimap-server-buffer)
755 (imap-capability 'IMAP4rev1 nnimap-server-buffer))
756 (imap-close nnimap-server-buffer)
757 (nnheader-report 'nnimap "Server %s is not IMAP4 compliant" server))
758 (let* ((list (netrc-parse nnimap-authinfo-file))
759 (port (if nnimap-server-port
760 (int-to-string nnimap-server-port)
762 (alist (or (netrc-machine list server port "imap")
764 (or nnimap-server-address
767 (netrc-machine list server port "imaps")
769 (or nnimap-server-address
772 (user (netrc-get alist "login"))
773 (passwd (netrc-get alist "password")))
774 (if (imap-authenticate user passwd nnimap-server-buffer)
776 (push (list server nnimap-server-buffer)
777 nnimap-server-buffer-alist)
778 (imap-id nnimap-id nnimap-server-buffer)
779 (nnimap-possibly-change-server server))
780 (imap-close nnimap-server-buffer)
781 (kill-buffer nnimap-server-buffer)
782 (nnheader-report 'nnimap "Could not authenticate to %s" server)))))
784 (deffoo nnimap-open-server (server &optional defs)
785 (nnheader-init-server-buffer)
786 (if (nnimap-server-opened server)
788 (unless (assq 'nnimap-server-buffer defs)
789 (push (list 'nnimap-server-buffer (concat " *nnimap* " server)) defs))
790 ;; translate `nnimap-server-address' to `nnimap-address' in defs
791 ;; for people that configured nnimap with a very old version
792 (unless (assq 'nnimap-address defs)
793 (if (assq 'nnimap-server-address defs)
794 (push (list 'nnimap-address
795 (cadr (assq 'nnimap-server-address defs))) defs)
796 (push (list 'nnimap-address server) defs)))
797 (nnoo-change-server 'nnimap server defs)
798 (or nnimap-server-buffer
799 (setq nnimap-server-buffer (cadr (assq 'nnimap-server-buffer defs))))
800 (with-current-buffer (get-buffer-create nnimap-server-buffer)
801 (nnoo-change-server 'nnimap server defs))
802 (or (and nnimap-server-buffer
803 (imap-opened nnimap-server-buffer)
804 (if (with-current-buffer nnimap-server-buffer
805 (memq imap-state '(auth select examine)))
807 (imap-close nnimap-server-buffer)
808 (nnimap-open-connection server)))
809 (nnimap-open-connection server))))
811 (deffoo nnimap-server-opened (&optional server)
812 "Whether SERVER is opened.
813 If SERVER is the current virtual server, and the connection to the
814 physical server is alive, this function return a non-nil value. If
815 SERVER is nil, it is treated as the current server."
816 ;; clean up autologouts??
817 (and (or server nnimap-current-server)
818 (nnoo-server-opened 'nnimap (or server nnimap-current-server))
819 (imap-opened (nnimap-get-server-buffer server))))
821 (deffoo nnimap-close-server (&optional server)
822 "Close connection to server and free all resources connected to it.
823 Return nil if the server couldn't be closed for some reason."
824 (let ((server (or server nnimap-current-server)))
825 (when (or (nnimap-server-opened server)
826 (imap-opened (nnimap-get-server-buffer server)))
827 (imap-close (nnimap-get-server-buffer server))
828 (kill-buffer (nnimap-get-server-buffer server))
829 (setq nnimap-server-buffer nil
830 nnimap-current-server nil
831 nnimap-server-buffer-alist
832 (delq server nnimap-server-buffer-alist)))
833 (nnoo-close-server 'nnimap server)))
835 (deffoo nnimap-request-close ()
836 "Close connection to all servers and free all resources that the backend have reserved.
837 All buffers that have been created by that
838 backend should be killed. (Not the nntp-server-buffer, though.) This
839 function is generally only called when Gnus is shutting down."
840 (mapc (lambda (server) (nnimap-close-server (car server)))
841 nnimap-server-buffer-alist)
842 (setq nnimap-server-buffer-alist nil))
844 (deffoo nnimap-status-message (&optional server)
845 "This function returns the last error message from server."
846 (when (nnimap-possibly-change-server server)
847 (nnoo-status-message 'nnimap server)))
849 (defun nnimap-demule (string)
850 ;; BEWARE: we used to use string-as-multibyte here which is braindead
851 ;; because it will turn accidental emacs-mule-valid byte sequences
852 ;; into multibyte chars. --Stef
853 (funcall (if (and (fboundp 'string-to-multibyte)
854 (subrp (symbol-function 'string-to-multibyte)))
859 (defun nnimap-make-callback (article gnus-callback buffer)
860 "Return a callback function."
862 (nnimap-callback ,article ,gnus-callback ,buffer)))
864 (defun nnimap-callback (article gnus-callback buffer)
865 (when (eq article (imap-current-message))
866 (remove-hook 'imap-fetch-data-hook
867 (nnimap-make-callback article gnus-callback buffer))
868 (with-current-buffer buffer
870 (with-current-buffer nnimap-server-buffer
872 (if (imap-capability 'IMAP4rev1)
873 ;; xxx don't just use car? alist doesn't contain
874 ;; anything else now, but it might...
875 (nth 2 (car (imap-message-get article 'BODYDETAIL)))
876 (imap-message-get article 'RFC822)))))
877 (nnheader-ms-strip-cr)
878 (funcall gnus-callback t))))
880 (defun nnimap-request-article-part (article part prop &optional
881 group server to-buffer detail)
882 (when (nnimap-possibly-change-group group server)
883 (let ((article (if (stringp article)
884 (car-safe (imap-search
885 (format "HEADER Message-Id \"%s\"" article)
886 nnimap-server-buffer))
889 (gnus-message 10 "nnimap: Fetching (part of) article %d from %s..."
890 article (or group imap-current-mailbox
891 gnus-newsgroup-name))
892 (if (not nnheader-callback-function)
893 (with-current-buffer (or to-buffer nntp-server-buffer)
895 (let ((data (imap-fetch article part prop nil
896 nnimap-server-buffer)))
897 (insert (nnimap-demule (if detail
900 (nnheader-ms-strip-cr)
902 10 "nnimap: Fetching (part of) article %d from %s...done"
903 article (or group imap-current-mailbox gnus-newsgroup-name))
905 (nnheader-report 'nnimap "No such article %d in %s: %s"
906 article (or group imap-current-mailbox
908 (imap-error-text nnimap-server-buffer))
909 (cons group article)))
910 (add-hook 'imap-fetch-data-hook
911 (nnimap-make-callback article
912 nnheader-callback-function
914 (imap-fetch-asynch article part nil nnimap-server-buffer)
915 (cons group article))))))
917 (deffoo nnimap-asynchronous-p ()
920 (deffoo nnimap-request-article (article &optional group server to-buffer)
921 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
922 (nnimap-request-article-part
923 article "BODY.PEEK[]" 'BODYDETAIL group server to-buffer 'detail)
924 (nnimap-request-article-part
925 article "RFC822.PEEK" 'RFC822 group server to-buffer)))
927 (deffoo nnimap-request-head (article &optional group server to-buffer)
928 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
929 (nnimap-request-article-part
930 article "BODY.PEEK[HEADER]" 'BODYDETAIL group server to-buffer 'detail)
931 (nnimap-request-article-part
932 article "RFC822.HEADER" 'RFC822.HEADER group server to-buffer)))
934 (deffoo nnimap-request-body (article &optional group server to-buffer)
935 (if (imap-capability 'IMAP4rev1 nnimap-server-buffer)
936 (nnimap-request-article-part
937 article "BODY.PEEK[TEXT]" 'BODYDETAIL group server to-buffer 'detail)
938 (nnimap-request-article-part
939 article "RFC822.TEXT.PEEK" 'RFC822.TEXT group server to-buffer)))
941 (deffoo nnimap-request-group (group &optional server fast)
942 (nnimap-request-update-info-internal
944 (gnus-get-info (gnus-group-prefixed-name
945 group (gnus-server-to-method (format "nnimap:%s" server))))
947 (when (nnimap-possibly-change-group group server)
948 (nnimap-before-find-minmax-bugworkaround)
951 ((null (setq info (nnimap-find-minmax-uid group t)))
952 (nnheader-report 'nnimap "Could not get active info for %s"
955 (nnheader-insert "211 %d %d %d %s\n" (or (nth 0 info) 0)
956 (max 1 (or (nth 1 info) 1))
957 (or (nth 2 info) 0) group)
958 (nnheader-report 'nnimap "Group %s selected" group)
961 (defun nnimap-update-unseen (group &optional server)
962 "Update the unseen count in `nnimap-mailbox-info'."
964 (gnus-group-prefixed-name group server)
965 (let ((old (gnus-gethash-safe (gnus-group-prefixed-name group server)
966 nnimap-mailbox-info)))
967 (list (nth 0 old) (nth 1 old)
968 (imap-mailbox-status group 'unseen nnimap-server-buffer)
970 nnimap-mailbox-info))
972 (defun nnimap-close-group (group &optional server)
973 (with-current-buffer nnimap-server-buffer
974 (when (and (imap-opened)
975 (nnimap-possibly-change-group group server))
976 (nnimap-update-unseen group server)
977 (case nnimap-expunge-on-close
979 (imap-mailbox-expunge nnimap-close-asynchronous)
980 (unless nnimap-dont-close
981 (imap-mailbox-close nnimap-close-asynchronous))))
982 (ask (if (and (imap-search "DELETED")
983 (gnus-y-or-n-p (format "Expunge articles in group `%s'? "
984 imap-current-mailbox)))
986 (imap-mailbox-expunge nnimap-close-asynchronous)
987 (unless nnimap-dont-close
988 (imap-mailbox-close nnimap-close-asynchronous)))
989 (imap-mailbox-unselect)))
990 (t (imap-mailbox-unselect)))
991 (not imap-current-mailbox))))
993 (defun nnimap-pattern-to-list-arguments (pattern)
995 (cons (car-safe p) (or (cdr-safe p) p)))
996 (if (and (listp pattern)
997 (listp (cdr pattern)))
1001 (deffoo nnimap-request-list (&optional server)
1002 (when (nnimap-possibly-change-server server)
1003 (with-current-buffer nntp-server-buffer
1005 (gnus-message 5 "nnimap: Generating active list%s..."
1006 (if (> (length server) 0) (concat " for " server) ""))
1007 (nnimap-before-find-minmax-bugworkaround)
1008 (with-current-buffer nnimap-server-buffer
1009 (dolist (pattern (nnimap-pattern-to-list-arguments nnimap-list-pattern))
1010 (dolist (mbx (funcall nnimap-request-list-method
1011 (cdr pattern) (car pattern)))
1012 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags mbx))
1013 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1015 (with-current-buffer nntp-server-buffer
1016 (insert (format "\"%s\" %d %d y\n"
1017 mbx (or (nth 2 info) 0)
1018 (max 1 (or (nth 1 info) 1)))))))))))
1019 (gnus-message 5 "nnimap: Generating active list%s...done"
1020 (if (> (length server) 0) (concat " for " server) ""))
1023 (deffoo nnimap-request-post (&optional server)
1025 (dolist (mbx (message-unquote-tokens
1026 (message-tokenize-header
1027 (message-fetch-field "Newsgroups") ", ")) success)
1028 (let ((to-newsgroup (gnus-group-prefixed-name mbx gnus-command-method)))
1029 (or (gnus-active to-newsgroup)
1030 (gnus-activate-group to-newsgroup)
1031 (if (gnus-y-or-n-p (format "No such group: %s. Create it? "
1033 (or (and (gnus-request-create-group
1034 to-newsgroup gnus-command-method)
1035 (gnus-activate-group to-newsgroup nil nil
1036 gnus-command-method))
1037 (error "Couldn't create group %s" to-newsgroup)))
1038 (error "No such group: %s" to-newsgroup))
1039 (unless (nnimap-request-accept-article mbx (nth 1 gnus-command-method))
1040 (setq success nil))))))
1042 ;; Optional backend functions
1044 (defun nnimap-string-lessp-numerical (s1 s2)
1045 "Return t if first arg string is less than second in numerical order."
1046 (cond ((string= s1 s2)
1048 ((> (length s1) (length s2))
1050 ((< (length s1) (length s2))
1052 ((< (string-to-number (substring s1 0 1))
1053 (string-to-number (substring s2 0 1)))
1055 ((> (string-to-number (substring s1 0 1))
1056 (string-to-number (substring s2 0 1)))
1059 (nnimap-string-lessp-numerical (substring s1 1) (substring s2 1)))))
1061 (deffoo nnimap-retrieve-groups (groups &optional server)
1062 (when (nnimap-possibly-change-server server)
1063 (gnus-message 5 "nnimap: Checking mailboxes...")
1064 (with-current-buffer nntp-server-buffer
1066 (nnimap-before-find-minmax-bugworkaround)
1067 (let (asyncgroups slowgroups)
1068 (if (null nnimap-retrieve-groups-asynchronous)
1069 (setq slowgroups groups)
1070 (dolist (group groups)
1071 (gnus-message 9 "nnimap: Quickly checking mailbox %s" group)
1072 (add-to-list (if (gnus-gethash-safe
1073 (gnus-group-prefixed-name group server)
1074 nnimap-mailbox-info)
1077 (list group (imap-mailbox-status-asynch
1078 group '(uidvalidity uidnext unseen)
1079 nnimap-server-buffer))))
1080 (dolist (asyncgroup asyncgroups)
1081 (let ((group (nth 0 asyncgroup))
1082 (tag (nth 1 asyncgroup))
1084 (when (imap-ok-p (imap-wait-for-tag tag nnimap-server-buffer))
1085 (if (or (not (string=
1086 (nth 0 (gnus-gethash (gnus-group-prefixed-name
1088 nnimap-mailbox-info))
1089 (imap-mailbox-get 'uidvalidity group
1090 nnimap-server-buffer)))
1092 (nth 1 (gnus-gethash (gnus-group-prefixed-name
1094 nnimap-mailbox-info))
1095 (imap-mailbox-get 'uidnext group
1096 nnimap-server-buffer))))
1097 (push (list group) slowgroups)
1098 (insert (nth 3 (gnus-gethash (gnus-group-prefixed-name
1100 nnimap-mailbox-info))))))))
1101 (dolist (group slowgroups)
1102 (if nnimap-retrieve-groups-asynchronous
1103 (setq group (car group)))
1104 (gnus-message 7 "nnimap: Mailbox %s modified" group)
1105 (imap-mailbox-put 'uidnext nil group nnimap-server-buffer)
1106 (or (member "\\NoSelect" (imap-mailbox-get 'list-flags group
1107 nnimap-server-buffer))
1108 (let* ((info (nnimap-find-minmax-uid group 'examine))
1109 (str (format "\"%s\" %d %d y\n" group
1111 (max 1 (or (nth 1 info) 1)))))
1112 (when (> (or (imap-mailbox-get 'recent group
1113 nnimap-server-buffer) 0)
1115 (push (list (cons group 0)) nnmail-split-history))
1117 (when nnimap-retrieve-groups-asynchronous
1119 (gnus-group-prefixed-name group server)
1120 (list (or (imap-mailbox-get
1121 'uidvalidity group nnimap-server-buffer)
1122 (imap-mailbox-status
1123 group 'uidvalidity nnimap-server-buffer))
1124 (or (imap-mailbox-get
1125 'uidnext group nnimap-server-buffer)
1126 (imap-mailbox-status
1127 group 'uidnext nnimap-server-buffer))
1128 (or (imap-mailbox-get
1129 'unseen group nnimap-server-buffer)
1130 (imap-mailbox-status
1131 group 'unseen nnimap-server-buffer))
1133 nnimap-mailbox-info)))))))
1134 (gnus-message 5 "nnimap: Checking mailboxes...done")
1137 (deffoo nnimap-request-update-info-internal (group info &optional server)
1138 (when (nnimap-possibly-change-group group server)
1139 (when info ;; xxx what does this mean? should we create a info?
1140 (with-current-buffer nnimap-server-buffer
1141 (gnus-message 5 "nnimap: Updating info for %s..."
1142 (gnus-info-group info))
1144 (when (nnimap-mark-permanent-p 'read)
1146 ;; read info could contain articles marked unread by other
1147 ;; imap clients! we correct this
1148 (setq seen (gnus-uncompress-range (gnus-info-read info))
1149 unseen (imap-search "UNSEEN UNDELETED")
1150 seen (gnus-set-difference seen unseen)
1151 ;; seen might lack articles marked as read by other
1152 ;; imap clients! we correct this
1153 seen (append seen (imap-search "SEEN"))
1156 seen (gnus-compress-sequence seen t)
1157 ;; we can't return '(1) since this isn't a "list of ranges",
1158 ;; and we can't return '((1)) since g-list-of-unread-articles
1159 ;; is buggy so we return '((1 . 1)).
1160 seen (if (and (integerp (car seen))
1162 (list (cons (car seen) (car seen)))
1164 (gnus-info-set-read info seen)))
1166 (mapcar (lambda (pred)
1167 (when (or (eq (cdr pred) 'recent)
1168 (and (nnimap-mark-permanent-p (cdr pred))
1169 (member (nnimap-mark-to-flag (cdr pred))
1170 (imap-mailbox-get 'flags))))
1171 (gnus-info-set-marks
1173 (gnus-update-alist-soft
1175 (gnus-compress-sequence
1176 (imap-search (nnimap-mark-to-predicate (cdr pred))))
1177 (gnus-info-marks info))
1179 gnus-article-mark-lists)
1181 (when nnimap-importantize-dormant
1182 ;; nnimap mark dormant article as ticked too (for other clients)
1183 ;; so we remove that mark for gnus since we support dormant
1184 (gnus-info-set-marks
1186 (gnus-update-alist-soft
1188 (gnus-remove-from-range
1189 (cdr-safe (assoc 'tick (gnus-info-marks info)))
1190 (cdr-safe (assoc 'dormant (gnus-info-marks info))))
1191 (gnus-info-marks info))
1194 (gnus-message 5 "nnimap: Updating info for %s...done"
1195 (gnus-info-group info))
1199 (deffoo nnimap-request-type (group &optional article)
1200 (if (and nnimap-news-groups (string-match nnimap-news-groups group))
1204 (deffoo nnimap-request-set-mark (group actions &optional server)
1205 (when (nnimap-possibly-change-group group server)
1206 (with-current-buffer nnimap-server-buffer
1208 (gnus-message 7 "nnimap: Setting marks in %s..." group)
1209 (while (setq action (pop actions))
1210 (let ((range (nth 0 action))
1211 (what (nth 1 action))
1212 (cmdmarks (nth 2 action))
1214 ;; bookmark can't be stored (not list/range
1215 (setq cmdmarks (delq 'bookmark cmdmarks))
1216 ;; killed can't be stored (not list/range
1217 (setq cmdmarks (delq 'killed cmdmarks))
1218 ;; unsent are for nndraft groups only
1219 (setq cmdmarks (delq 'unsent cmdmarks))
1220 ;; cache flags are pointless on the server
1221 (setq cmdmarks (delq 'cache cmdmarks))
1222 ;; seen flags are local to each gnus
1223 (setq cmdmarks (delq 'seen cmdmarks))
1224 ;; recent marks can't be set
1225 (setq cmdmarks (delq 'recent cmdmarks))
1226 (when nnimap-importantize-dormant
1227 ;; flag dormant articles as ticked
1228 (if (memq 'dormant cmdmarks)
1229 (setq cmdmarks (cons 'tick cmdmarks))))
1230 ;; remove stuff we are forbidden to store
1231 (mapc (lambda (mark)
1232 (if (imap-message-flag-permanent-p
1233 (nnimap-mark-to-flag mark))
1234 (setq marks (cons mark marks))))
1236 (when (and range marks)
1237 (cond ((eq what 'del)
1238 (imap-message-flags-del
1239 (imap-range-to-message-set range)
1240 (nnimap-mark-to-flag marks nil t)))
1242 (imap-message-flags-add
1243 (imap-range-to-message-set range)
1244 (nnimap-mark-to-flag marks nil t)))
1246 (imap-message-flags-set
1247 (imap-range-to-message-set range)
1248 (nnimap-mark-to-flag marks nil t)))))))
1249 (gnus-message 7 "nnimap: Setting marks in %s...done" group))))
1252 (defun nnimap-split-fancy ()
1253 "Like the function `nnmail-split-fancy', but uses `nnimap-split-fancy'."
1254 (let ((nnmail-split-fancy nnimap-split-fancy))
1255 (nnmail-split-fancy)))
1257 (defun nnimap-split-to-groups (rules)
1258 ;; tries to match all rules in nnimap-split-rule against content of
1259 ;; nntp-server-buffer, returns a list of groups that matched.
1260 (with-current-buffer nntp-server-buffer
1261 ;; Fold continuation lines.
1262 (goto-char (point-min))
1263 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
1264 (replace-match " " t t))
1265 (if (functionp rules)
1267 (let (to-groups regrepp)
1269 (dolist (rule rules to-groups)
1270 (let ((group (car rule))
1271 (regexp (cadr rule)))
1272 (goto-char (point-min))
1273 (when (and (if (stringp regexp)
1275 (if (not (stringp group))
1276 (setq group (eval group))
1278 (string-match "\\\\[0-9&]" group)))
1279 (re-search-forward regexp nil t))
1280 (funcall regexp group))
1281 ;; Don't enter the article into the same group twice.
1282 (not (assoc group to-groups)))
1284 (nnmail-expand-newtext group)
1287 (or nnimap-split-crosspost
1288 (throw 'split-done to-groups))))))))))
1290 (defun nnimap-assoc-match (key alist)
1292 (while (and alist (not element))
1293 (if (string-match (car (car alist)) key)
1294 (setq element (car alist)))
1295 (setq alist (cdr alist)))
1298 (defun nnimap-split-find-rule (server inbox)
1299 (if (and (listp nnimap-split-rule) (listp (car nnimap-split-rule))
1300 (list (cdar nnimap-split-rule)) (listp (cadar nnimap-split-rule)))
1302 (cadr (nnimap-assoc-match inbox (cdr (nnimap-assoc-match
1303 server nnimap-split-rule))))
1306 (defun nnimap-split-find-inbox (server)
1307 (if (listp nnimap-split-inbox)
1309 (list nnimap-split-inbox)))
1311 (defun nnimap-split-articles (&optional group server)
1312 (when (nnimap-possibly-change-server server)
1313 (with-current-buffer nnimap-server-buffer
1314 (let (rule inbox removeorig (inboxes (nnimap-split-find-inbox server)))
1315 ;; iterate over inboxes
1316 (while (and (setq inbox (pop inboxes))
1317 (nnimap-possibly-change-group inbox)) ;; SELECT
1318 ;; find split rule for this server / inbox
1319 (when (setq rule (nnimap-split-find-rule server inbox))
1320 ;; iterate over articles
1321 (dolist (article (imap-search nnimap-split-predicate))
1322 (when (if (if (eq nnimap-split-download-body 'default)
1323 nnimap-split-download-body-default
1324 nnimap-split-download-body)
1325 (and (nnimap-request-article article)
1326 (with-current-buffer nntp-server-buffer (mail-narrow-to-head)))
1327 (nnimap-request-head article))
1328 ;; copy article to right group(s)
1329 (setq removeorig nil)
1330 (dolist (to-group (nnimap-split-to-groups rule))
1331 (cond ((eq to-group 'junk)
1332 (message "IMAP split removed %s:%s:%d" server inbox
1334 (setq removeorig t))
1335 ((imap-message-copy (number-to-string article)
1336 to-group nil 'nocopyuid)
1337 (message "IMAP split moved %s:%s:%d to %s" server
1338 inbox article to-group)
1340 (when nnmail-cache-accepted-message-ids
1341 (with-current-buffer nntp-server-buffer
1344 (nnmail-fetch-field "message-id"))
1345 (nnmail-cache-insert msgid
1347 (nnmail-fetch-field "subject"))))))
1348 ;; Add the group-art list to the history list.
1349 (push (list (cons to-group 0)) nnmail-split-history))
1351 (message "IMAP split failed to move %s:%s:%d to %s"
1352 server inbox article to-group))))
1353 (if (if (eq nnimap-split-download-body 'default)
1354 nnimap-split-download-body-default
1355 nnimap-split-download-body)
1357 ;; remove article if it was successfully copied somewhere
1359 (imap-message-flags-add (format "%d" article)
1360 "\\Seen \\Deleted")))))
1361 (when (imap-mailbox-select inbox) ;; just in case
1362 ;; todo: UID EXPUNGE (if available) to remove splitted articles
1363 (imap-mailbox-expunge)
1364 (imap-mailbox-close)))
1365 (when nnmail-cache-accepted-message-ids
1366 (nnmail-cache-close))
1369 (deffoo nnimap-request-scan (&optional group server)
1370 (nnimap-split-articles group server))
1372 (deffoo nnimap-request-newgroups (date &optional server)
1373 (when (nnimap-possibly-change-server server)
1374 (with-current-buffer nntp-server-buffer
1375 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s..."
1376 (if (> (length server) 0) " on " "") server)
1378 (nnimap-before-find-minmax-bugworkaround)
1379 (dolist (pattern (nnimap-pattern-to-list-arguments
1380 nnimap-list-pattern))
1381 (dolist (mbx (imap-mailbox-lsub (cdr pattern) (car pattern) nil
1382 nnimap-server-buffer))
1384 (dolist (mailbox (imap-mailbox-get 'list-flags mbx
1385 nnimap-server-buffer))
1386 (if (string= (downcase mailbox) "\\noselect")
1389 (let ((info (nnimap-find-minmax-uid mbx 'examine)))
1391 (insert (format "\"%s\" %d %d y\n"
1392 mbx (or (nth 2 info) 0)
1393 (max 1 (or (nth 1 info) 1)))))))))
1394 (gnus-message 5 "nnimap: Listing subscribed mailboxes%s%s...done"
1395 (if (> (length server) 0) " on " "") server))
1398 (deffoo nnimap-request-create-group (group &optional server args)
1399 (when (nnimap-possibly-change-server server)
1400 (or (imap-mailbox-status group 'uidvalidity nnimap-server-buffer)
1401 (imap-mailbox-create group nnimap-server-buffer)
1402 (nnheader-report 'nnimap "%S"
1403 (imap-error-text nnimap-server-buffer)))))
1405 (defun nnimap-time-substract (time1 time2)
1406 "Return TIME for TIME1 - TIME2."
1407 (let* ((ms (- (car time1) (car time2)))
1408 (ls (- (nth 1 time1) (nth 1 time2))))
1410 (list (- ms 1) (+ (expt 2 16) ls))
1413 (defun nnimap-date-days-ago (daysago)
1414 "Return date, in format \"3-Aug-1998\", for DAYSAGO days ago."
1415 (let* ((time (nnimap-time-substract (current-time) (days-to-time daysago)))
1416 (date (format-time-string
1417 (format "%%d-%s-%%Y"
1418 (capitalize (car (rassoc (nth 4 (decode-time time))
1419 parse-time-months))))
1421 (if (eq ?0 (string-to-char date))
1425 (defun nnimap-request-expire-articles-progress ()
1426 (gnus-message 5 "nnimap: Marking article %d for deletion..."
1427 imap-current-message))
1429 (defun nnimap-expiry-target (arts group server)
1430 (unless (eq nnmail-expiry-target 'delete)
1433 (nnimap-request-article art group server (current-buffer))
1434 ;; hints for optimization in `nnimap-request-accept-article'
1435 (let ((nnimap-current-move-article art)
1436 (nnimap-current-move-group group)
1437 (nnimap-current-move-server server))
1438 (nnmail-expiry-target-group nnmail-expiry-target group))))
1439 ;; It is not clear if `nnmail-expiry-target' somehow cause the
1440 ;; current group to be changed or not, so we make sure here.
1441 (nnimap-possibly-change-group group server)))
1443 ;; Notice that we don't actually delete anything, we just mark them deleted.
1444 (deffoo nnimap-request-expire-articles (articles group &optional server force)
1445 (let ((artseq (gnus-compress-sequence articles)))
1446 (when (and artseq (nnimap-possibly-change-group group server))
1447 (with-current-buffer nnimap-server-buffer
1448 (let ((days (or (and nnmail-expiry-wait-function
1449 (funcall nnmail-expiry-wait-function group))
1450 nnmail-expiry-wait)))
1451 (cond ((or force (eq days 'immediate))
1452 (let ((oldarts (imap-search
1454 (imap-range-to-message-set artseq)))))
1456 (nnimap-expiry-target oldarts group server)
1457 (when (imap-message-flags-add
1458 (imap-range-to-message-set
1459 (gnus-compress-sequence oldarts)) "\\Deleted")
1460 (setq articles (gnus-set-difference
1461 articles oldarts))))))
1463 (let ((oldarts (imap-search
1464 (format nnimap-expunge-search-string
1465 (imap-range-to-message-set artseq)
1466 (nnimap-date-days-ago days))))
1467 (imap-fetch-data-hook
1468 '(nnimap-request-expire-articles-progress)))
1470 (nnimap-expiry-target oldarts group server)
1471 (when (imap-message-flags-add
1472 (imap-range-to-message-set
1473 (gnus-compress-sequence oldarts)) "\\Deleted")
1474 (setq articles (gnus-set-difference
1475 articles oldarts)))))))))))
1476 ;; return articles not deleted
1479 (deffoo nnimap-request-move-article (article group server
1480 accept-form &optional last)
1481 (when (nnimap-possibly-change-server server)
1483 (let ((buf (get-buffer-create " *nnimap move*"))
1484 (nnimap-current-move-article article)
1485 (nnimap-current-move-group group)
1486 (nnimap-current-move-server nnimap-current-server)
1488 (and (nnimap-request-article article group server)
1491 (buffer-disable-undo (current-buffer))
1492 (insert-buffer-substring nntp-server-buffer)
1493 (setq result (eval accept-form))
1496 (imap-message-flags-add
1497 (imap-range-to-message-set (list article))
1498 "\\Deleted" 'silent nnimap-server-buffer))
1501 (deffoo nnimap-request-accept-article (group &optional server last)
1502 (when (nnimap-possibly-change-server server)
1505 (if (string= nnimap-current-server nnimap-current-move-server)
1506 ;; moving article within same server, speed it up...
1507 (and (nnimap-possibly-change-group
1508 nnimap-current-move-group)
1509 (imap-message-copy (number-to-string
1510 nnimap-current-move-article)
1511 group 'dontcreate nil
1512 nnimap-server-buffer))
1513 (with-current-buffer (current-buffer)
1514 (goto-char (point-min))
1515 ;; remove any 'From blabla' lines, some IMAP servers
1516 ;; reject the entire message otherwise.
1517 (when (looking-at "^From[^:]")
1518 (delete-region (point) (progn (forward-line) (point))))
1519 ;; turn into rfc822 format (\r\n eol's)
1520 (while (search-forward "\n" nil t)
1521 (replace-match "\r\n"))
1522 (when nnmail-cache-accepted-message-ids
1523 (nnmail-cache-insert (nnmail-fetch-field "message-id")
1525 (nnmail-fetch-field "subject"))))
1526 (when (and last nnmail-cache-accepted-message-ids)
1527 (nnmail-cache-close))
1528 ;; this 'or' is for Cyrus server bug
1529 (or (null (imap-current-mailbox nnimap-server-buffer))
1530 (imap-mailbox-unselect nnimap-server-buffer))
1531 (imap-message-append group (current-buffer) nil nil
1532 nnimap-server-buffer)))
1533 (cons group (nth 1 uid))
1534 (nnheader-report 'nnimap (imap-error-text nnimap-server-buffer))))))
1536 (deffoo nnimap-request-delete-group (group force &optional server)
1537 (when (nnimap-possibly-change-server server)
1538 (with-current-buffer nnimap-server-buffer
1540 (or (null (imap-mailbox-status group 'uidvalidity))
1541 (imap-mailbox-delete group))
1545 (deffoo nnimap-request-rename-group (group new-name &optional server)
1546 (when (nnimap-possibly-change-server server)
1547 (imap-mailbox-rename group new-name nnimap-server-buffer)))
1549 (defun nnimap-expunge (mailbox server)
1550 (when (nnimap-possibly-change-group mailbox server)
1551 (imap-mailbox-expunge nil nnimap-server-buffer)))
1553 (defun nnimap-acl-get (mailbox server)
1554 (when (nnimap-possibly-change-server server)
1555 (and (imap-capability 'ACL nnimap-server-buffer)
1556 (imap-mailbox-acl-get mailbox nnimap-server-buffer))))
1558 (defun nnimap-acl-edit (mailbox method old-acls new-acls)
1559 (when (nnimap-possibly-change-server (cadr method))
1560 (unless (imap-capability 'ACL nnimap-server-buffer)
1561 (error "Your server does not support ACL editing"))
1562 (with-current-buffer nnimap-server-buffer
1563 ;; delete all removed identifiers
1564 (mapc (lambda (old-acl)
1565 (unless (assoc (car old-acl) new-acls)
1566 (or (imap-mailbox-acl-delete (car old-acl) mailbox)
1567 (error "Can't delete ACL for %s" (car old-acl)))))
1569 ;; set all changed acl's
1570 (mapc (lambda (new-acl)
1571 (let ((new-rights (cdr new-acl))
1572 (old-rights (cdr (assoc (car new-acl) old-acls))))
1573 (unless (and old-rights new-rights
1574 (string= old-rights new-rights))
1575 (or (imap-mailbox-acl-set (car new-acl) new-rights mailbox)
1576 (error "Can't set ACL for %s to %s" (car new-acl)
1582 ;;; Internal functions
1585 ;; This is confusing.
1587 ;; mark => read, tick, draft, reply etc
1588 ;; flag => "\\Seen", "\\Flagged", "\\Draft", "gnus-expire" etc
1589 ;; predicate => "SEEN", "FLAGGED", "DRAFT", "KEYWORD gnus-expire" etc
1591 ;; Mark should not really contain 'read since it's not a "mark" in the Gnus
1592 ;; world, but we cheat. Mark == gnus-article-mark-lists + '(read . read).
1595 (defconst nnimap-mark-to-predicate-alist
1597 (lambda (pair) ; cdr is the mark
1598 (or (assoc (cdr pair)
1603 (reply . "ANSWERED")))
1605 (format "KEYWORD gnus-%s" (symbol-name (cdr pair))))))
1606 (cons '(read . read) gnus-article-mark-lists)))
1608 (defun nnimap-mark-to-predicate (pred)
1609 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP predicate.
1610 This is a string such as \"SEEN\", \"FLAGGED\", \"KEYWORD gnus-expire\",
1611 to be used within a IMAP SEARCH query."
1612 (cdr (assq pred nnimap-mark-to-predicate-alist)))
1614 (defconst nnimap-mark-to-flag-alist
1617 (or (assoc (cdr pair)
1619 (tick . "\\Flagged")
1621 (recent . "\\Recent")
1622 (reply . "\\Answered")))
1624 (format "gnus-%s" (symbol-name (cdr pair))))))
1625 (cons '(read . read) gnus-article-mark-lists)))
1627 (defun nnimap-mark-to-flag-1 (preds)
1628 (if (and (not (null preds)) (listp preds))
1629 (cons (nnimap-mark-to-flag (car preds))
1630 (nnimap-mark-to-flag (cdr preds)))
1631 (cdr (assoc preds nnimap-mark-to-flag-alist))))
1633 (defun nnimap-mark-to-flag (preds &optional always-list make-string)
1634 "Convert a Gnus mark (a symbol such as read, tick, expire) to a IMAP flag.
1635 This is a string such as \"\\Seen\", \"\\Flagged\", \"gnus-expire\", to
1636 be used in a STORE FLAGS command."
1637 (let ((result (nnimap-mark-to-flag-1 preds)))
1638 (setq result (if (and (or make-string always-list)
1639 (not (listp result)))
1643 (mapconcat (lambda (flag)
1645 (mapconcat 'identity flag " ")
1650 (defun nnimap-mark-permanent-p (mark &optional group)
1651 "Return t iff MARK can be permanently (between IMAP sessions) saved on articles, in GROUP."
1652 (imap-message-flag-permanent-p (nnimap-mark-to-flag mark)))
1656 (buffer-disable-undo (get-buffer-create nnimap-debug-buffer))
1657 (mapcar (lambda (f) (trace-function-background f nnimap-debug-buffer))
1659 nnimap-possibly-change-server
1660 nnimap-verify-uidvalidity
1661 nnimap-find-minmax-uid
1662 nnimap-before-find-minmax-bugworkaround
1663 nnimap-possibly-change-group
1664 ;;nnimap-replace-whitespace
1665 nnimap-retrieve-headers-progress
1666 nnimap-retrieve-which-headers
1667 nnimap-group-overview-filename
1668 nnimap-retrieve-headers-from-file
1669 nnimap-retrieve-headers-from-server
1670 nnimap-retrieve-headers
1671 nnimap-open-connection
1673 nnimap-server-opened
1675 nnimap-request-close
1676 nnimap-status-message
1678 nnimap-request-article-part
1679 nnimap-request-article
1682 nnimap-request-group
1684 nnimap-pattern-to-list-arguments
1687 nnimap-retrieve-groups
1688 nnimap-request-update-info-internal
1690 nnimap-request-set-mark
1691 nnimap-split-to-groups
1692 nnimap-split-find-rule
1693 nnimap-split-find-inbox
1694 nnimap-split-articles
1696 nnimap-request-newgroups
1697 nnimap-request-create-group
1698 nnimap-time-substract
1699 nnimap-date-days-ago
1700 nnimap-request-expire-articles-progress
1701 nnimap-request-expire-articles
1702 nnimap-request-move-article
1703 nnimap-request-accept-article
1704 nnimap-request-delete-group
1705 nnimap-request-rename-group
1706 gnus-group-nnimap-expunge
1707 gnus-group-nnimap-edit-acl
1708 gnus-group-nnimap-edit-acl-done
1709 nnimap-group-mode-hook
1710 nnimap-mark-to-predicate
1711 nnimap-mark-to-flag-1
1713 nnimap-mark-permanent-p
1718 ;; arch-tag: 2b001f20-3ff9-4094-a0ad-46807c1ba70b
1719 ;;; nnimap.el ends here