Merge changes made in Gnus trunk.
[bpt/emacs.git] / lisp / gnus / nnimap.el
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20a673b2 1;;; nnimap.el --- IMAP interface for Gnus
e84b4b86 2
20a673b2 3;; Copyright (C) 2010 Free Software Foundation, Inc.
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5;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6;; Simon Josefsson <simon@josefsson.org>
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7
8;; This file is part of GNU Emacs.
9
5e809f55 10;; GNU Emacs is free software: you can redistribute it and/or modify
c113de23 11;; it under the terms of the GNU General Public License as published by
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12;; the Free Software Foundation, either version 3 of the License, or
13;; (at your option) any later version.
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14
15;; GNU Emacs is distributed in the hope that it will be useful,
16;; but WITHOUT ANY WARRANTY; without even the implied warranty of
5e809f55 17;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18;; GNU General Public License for more details.
19
20;; You should have received a copy of the GNU General Public License
5e809f55 21;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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22
23;;; Commentary:
24
20a673b2 25;; nnimap interfaces Gnus with IMAP servers.
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26
27;;; Code:
28
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29;; For Emacs <22.2 and XEmacs.
30(eval-and-compile
31 (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
32
aa8f8277 33(eval-and-compile
20a673b2 34 (require 'nnheader))
aa8f8277 35
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36(eval-when-compile
37 (require 'cl))
c113de23 38
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39(require 'nnheader)
40(require 'gnus-util)
41(require 'gnus)
42(require 'nnoo)
20a673b2 43(require 'netrc)
14db1c41 44(require 'utf7)
6b958814 45(require 'tls)
0617bb00 46(require 'parse-time)
e952b711 47
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48(autoload 'auth-source-forget-user-or-password "auth-source")
49(autoload 'auth-source-user-or-password "auth-source")
50
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51(nnoo-declare nnimap)
52
c113de23 53(defvoo nnimap-address nil
20a673b2 54 "The address of the IMAP server.")
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55
56(defvoo nnimap-server-port nil
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57 "The IMAP port used.
58If nnimap-stream is `ssl', this will default to `imaps'. If not,
59it will default to `imap'.")
60
61(defvoo nnimap-stream 'ssl
62 "How nnimap will talk to the IMAP server.
b1ae92ba 63Values are `ssl', `network', `starttls' or `shell'.")
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64
65(defvoo nnimap-shell-program (if (boundp 'imap-shell-program)
66 (if (listp imap-shell-program)
67 (car imap-shell-program)
68 imap-shell-program)
69 "ssh %s imapd"))
70
71(defvoo nnimap-inbox nil
72 "The mail box where incoming mail arrives and should be split out of.")
73
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74(defvoo nnimap-split-methods nil
75 "How mail is split.
76Uses the same syntax as nnmail-split-methods")
77
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78(defvoo nnimap-split-fancy nil
79 "Uses the same syntax as nnmail-split-fancy.")
80
229b59da 81(make-obsolete-variable 'nnimap-split-rule "see `nnimap-split-methods'"
6b958814 82 "Emacs 24.1")
229b59da 83
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84(defvoo nnimap-authenticator nil
85 "How nnimap authenticate itself to the server.
86Possible choices are nil (use default methods) or `anonymous'.")
87
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88(defvoo nnimap-expunge t
89 "If non-nil, expunge articles after deleting them.
90This is always done if the server supports UID EXPUNGE, but it's
91not done by default on servers that doesn't support that command.")
92
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93(defvoo nnimap-streaming t
94 "If non-nil, try to use streaming commands with IMAP servers.
95Switching this off will make nnimap slower, but it helps with
96some servers.")
0617bb00 97
20a673b2 98(defvoo nnimap-connection-alist nil)
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99
100(defvoo nnimap-current-infos nil)
101
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102(defvoo nnimap-fetch-partial-articles nil
103 "If non-nil, Gnus will fetch partial articles.
104If t, nnimap will fetch only the first part. If a string, it
105will fetch all parts that have types that match that string. A
106likely value would be \"text/\" to automatically fetch all
107textual parts.")
108
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109(defvar nnimap-process nil)
110
111(defvar nnimap-status-string "")
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112
113(defvar nnimap-split-download-body-default nil
114 "Internal variable with default value for `nnimap-split-download-body'.")
115
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116(defvar nnimap-keepalive-timer nil)
117(defvar nnimap-process-buffers nil)
118
20a673b2 119(defstruct nnimap
61b1af82 120 group process commands capabilities select-result newlinep server
4478e074 121 last-command-time greeting)
c113de23 122
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123(defvar nnimap-object nil)
124
125(defvar nnimap-mark-alist
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126 '((read "\\Seen" %Seen)
127 (tick "\\Flagged" %Flagged)
128 (reply "\\Answered" %Answered)
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129 (expire "gnus-expire")
130 (dormant "gnus-dormant")
131 (score "gnus-score")
132 (save "gnus-save")
133 (download "gnus-download")
134 (forward "gnus-forward")))
135
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136(defun nnimap-buffer ()
137 (nnimap-find-process-buffer nntp-server-buffer))
138
286c4fc2 139(deffoo nnimap-retrieve-headers (articles &optional group server fetch-old)
c113de23 140 (with-current-buffer nntp-server-buffer
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141 (erase-buffer)
142 (when (nnimap-possibly-change-group group server)
143 (with-current-buffer (nnimap-buffer)
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144 (erase-buffer)
145 (nnimap-wait-for-response
146 (nnimap-send-command
147 "UID FETCH %s %s"
148 (nnimap-article-ranges (gnus-compress-sequence articles))
149 (format "(UID RFC822.SIZE BODYSTRUCTURE %s)"
150 (format
8ccbef23 151 (if (nnimap-ver4-p)
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152 "BODY.PEEK[HEADER.FIELDS %s]"
153 "RFC822.HEADER.LINES %s")
154 (append '(Subject From Date Message-Id
155 References In-Reply-To Xref)
156 nnmail-extra-headers))))
157 t)
158 (nnimap-transform-headers))
159 (insert-buffer-substring
160 (nnimap-find-process-buffer (current-buffer))))
b1ae92ba 161 'headers))
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162
163(defun nnimap-transform-headers ()
164 (goto-char (point-min))
b1ae92ba 165 (let (article bytes lines size string)
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166 (block nil
167 (while (not (eobp))
168 (while (not (looking-at "^\\* [0-9]+ FETCH.*UID \\([0-9]+\\)"))
169 (delete-region (point) (progn (forward-line 1) (point)))
170 (when (eobp)
171 (return)))
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172 (setq article (match-string 1))
173 ;; Unfold quoted {number} strings.
174 (while (re-search-forward "[^]] {\\([0-9]+\\)}\r\n"
175 (1+ (line-end-position)) t)
176 (setq size (string-to-number (match-string 1)))
177 (delete-region (+ (match-beginning 0) 2) (point))
178 (setq string (delete-region (point) (+ (point) size)))
179 (insert (format "%S" string)))
180 (setq bytes (nnimap-get-length)
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181 lines nil)
182 (beginning-of-line)
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183 (setq size
184 (and (re-search-forward "RFC822.SIZE \\([0-9]+\\)"
185 (line-end-position)
186 t)
187 (match-string 1)))
188 (beginning-of-line)
20a673b2 189 (when (search-forward "BODYSTRUCTURE" (line-end-position) t)
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190 (let ((structure (ignore-errors
191 (read (current-buffer)))))
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192 (while (and (consp structure)
193 (not (stringp (car structure))))
194 (setq structure (car structure)))
195 (setq lines (nth 7 structure))))
196 (delete-region (line-beginning-position) (line-end-position))
197 (insert (format "211 %s Article retrieved." article))
198 (forward-line 1)
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199 (when size
200 (insert (format "Chars: %s\n" size)))
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201 (when lines
202 (insert (format "Lines: %s\n" lines)))
203 (re-search-forward "^\r$")
204 (delete-region (line-beginning-position) (line-end-position))
205 (insert ".")
206 (forward-line 1)))))
207
208(defun nnimap-get-length ()
209 (and (re-search-forward "{\\([0-9]+\\)}" (line-end-position) t)
210 (string-to-number (match-string 1))))
211
212(defun nnimap-article-ranges (ranges)
213 (let (result)
214 (cond
215 ((numberp ranges)
216 (number-to-string ranges))
217 ((numberp (cdr ranges))
218 (format "%d:%d" (car ranges) (cdr ranges)))
219 (t
220 (dolist (elem ranges)
221 (push
222 (if (consp elem)
223 (format "%d:%d" (car elem) (cdr elem))
224 (number-to-string elem))
225 result))
226 (mapconcat #'identity (nreverse result) ",")))))
227
286c4fc2 228(deffoo nnimap-open-server (server &optional defs)
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229 (if (nnimap-server-opened server)
230 t
c113de23 231 (unless (assq 'nnimap-address defs)
20a673b2 232 (setq defs (append defs (list (list 'nnimap-address server)))))
c113de23 233 (nnoo-change-server 'nnimap server defs)
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234 (or (nnimap-find-connection nntp-server-buffer)
235 (nnimap-open-connection nntp-server-buffer))))
236
237(defun nnimap-make-process-buffer (buffer)
238 (with-current-buffer
239 (generate-new-buffer (format "*nnimap %s %s %s*"
240 nnimap-address nnimap-server-port
241 (gnus-buffer-exists-p buffer)))
242 (mm-disable-multibyte)
243 (buffer-disable-undo)
244 (gnus-add-buffer)
245 (set (make-local-variable 'after-change-functions) nil)
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246 (set (make-local-variable 'nnimap-object)
247 (make-nnimap :server (nnoo-current-server 'nnimap)))
20a673b2 248 (push (list buffer (current-buffer)) nnimap-connection-alist)
61b1af82 249 (push (current-buffer) nnimap-process-buffers)
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250 (current-buffer)))
251
252(defun nnimap-open-shell-stream (name buffer host port)
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253 (let ((process-connection-type nil))
254 (start-process name buffer shell-file-name
255 shell-command-switch
256 (format-spec
257 nnimap-shell-program
258 (format-spec-make
259 ?s host
260 ?p port)))))
20a673b2 261
2696d88f 262(defun nnimap-credentials (address ports &optional inhibit-create)
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263 (let (port credentials)
264 ;; Request the credentials from all ports, but only query on the
265 ;; last port if all the previous ones have failed.
266 (while (and (null credentials)
267 (setq port (pop ports)))
268 (setq credentials
269 (auth-source-user-or-password
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270 '("login" "password") address port nil
271 (if inhibit-create
272 nil
273 (null ports)))))
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274 credentials))
275
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276(defun nnimap-keepalive ()
277 (let ((now (current-time)))
278 (dolist (buffer nnimap-process-buffers)
279 (when (buffer-name buffer)
280 (with-current-buffer buffer
281 (when (and nnimap-object
282 (nnimap-last-command-time nnimap-object)
283 (> (time-to-seconds
284 (time-subtract
285 now
286 (nnimap-last-command-time nnimap-object)))
287 ;; More than five minutes since the last command.
288 (* 5 60)))
289 (nnimap-send-command "NOOP")))))))
290
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291(declare-function gnutls-negotiate "subr" (fn file &optional arglist fileonly))
292
20a673b2 293(defun nnimap-open-connection (buffer)
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294 (unless nnimap-keepalive-timer
295 (setq nnimap-keepalive-timer (run-at-time (* 60 15) (* 60 15)
296 'nnimap-keepalive)))
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297 (block nil
298 (with-current-buffer (nnimap-make-process-buffer buffer)
299 (let* ((coding-system-for-read 'binary)
300 (coding-system-for-write 'binary)
301 (port nil)
302 (ports
303 (cond
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304 ((or (eq nnimap-stream 'network)
305 (and (eq nnimap-stream 'starttls)
306 (fboundp 'open-gnutls-stream)))
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307 (nnheader-message 7 "Opening connection to %s..."
308 nnimap-address)
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309 (open-network-stream
310 "*nnimap*" (current-buffer) nnimap-address
311 (setq port
312 (or nnimap-server-port
313 (if (netrc-find-service-number "imap")
314 "imap"
315 "143"))))
316 '("143" "imap"))
317 ((eq nnimap-stream 'shell)
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318 (nnheader-message 7 "Opening connection to %s via shell..."
319 nnimap-address)
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320 (nnimap-open-shell-stream
321 "*nnimap*" (current-buffer) nnimap-address
322 (setq port (or nnimap-server-port "imap")))
323 '("imap"))
324 ((eq nnimap-stream 'starttls)
283f7b93 325 (nnheader-message 7 "Opening connection to %s via starttls..."
030158f3 326 nnimap-address)
0d2d1bdc 327 (let ((tls-program
030158f3 328 '("openssl s_client -connect %h:%p -no_ssl2 -ign_eof -starttls imap")))
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329 (open-tls-stream
330 "*nnimap*" (current-buffer) nnimap-address
a1d16a7b 331 (setq port (or nnimap-server-port "imap"))))
9f2d52e7 332 '("imap"))
71e691a5 333 ((memq nnimap-stream '(ssl tls))
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334 (nnheader-message 7 "Opening connection to %s via tls..."
335 nnimap-address)
f7aa248a 336 (funcall (if (fboundp 'open-gnutls-stream)
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337 'open-gnutls-stream
338 'open-tls-stream)
339 "*nnimap*" (current-buffer) nnimap-address
340 (setq port
341 (or nnimap-server-port
342 (if (netrc-find-service-number "imaps")
343 "imaps"
344 "993"))))
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345 '("143" "993" "imap" "imaps"))
346 (t
347 (error "Unknown stream type: %s" nnimap-stream))))
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348 connection-result login-result credentials)
349 (setf (nnimap-process nnimap-object)
350 (get-buffer-process (current-buffer)))
351 (if (not (and (nnimap-process nnimap-object)
352 (memq (process-status (nnimap-process nnimap-object))
353 '(open run))))
354 (nnheader-report 'nnimap "Unable to contact %s:%s via %s"
355 nnimap-address port nnimap-stream)
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356 (gnus-set-process-query-on-exit-flag
357 (nnimap-process nnimap-object) nil)
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358 (if (not (setq connection-result (nnimap-wait-for-connection)))
359 (nnheader-report 'nnimap
360 "%s" (buffer-substring
361 (point) (line-end-position)))
362 ;; Store the greeting (for debugging purposes).
363 (setf (nnimap-greeting nnimap-object)
364 (buffer-substring (line-beginning-position)
365 (line-end-position)))
366 ;; Store the capabilities.
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367 (setf (nnimap-capabilities nnimap-object)
368 (mapcar
369 #'upcase
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370 (nnimap-find-parameter
371 "CAPABILITY" (cdr (nnimap-command "CAPABILITY")))))
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372 (when nnimap-server-port
373 (push (format "%s" nnimap-server-port) ports))
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374 ;; If this is a STARTTLS-capable server, then sever the
375 ;; connection and start a STARTTLS connection instead.
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376 (cond
377 ((and (or (and (eq nnimap-stream 'network)
378 (member "STARTTLS"
379 (nnimap-capabilities nnimap-object)))
380 (eq nnimap-stream 'starttls))
381 (fboundp 'open-gnutls-stream))
382 (nnimap-command "STARTTLS")
383 (gnutls-negotiate (nnimap-process nnimap-object) nil))
384 ((and (eq nnimap-stream 'network)
385 (member "STARTTLS" (nnimap-capabilities nnimap-object)))
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386 (let ((nnimap-stream 'starttls))
387 (let ((tls-process
388 (nnimap-open-connection buffer)))
389 ;; If the STARTTLS connection was successful, we
390 ;; kill our first non-encrypted connection. If it
391 ;; wasn't successful, we just use our unencrypted
392 ;; connection.
393 (when (memq (process-status tls-process) '(open run))
394 (delete-process (nnimap-process nnimap-object))
395 (kill-buffer (current-buffer))
dab0271f 396 (return tls-process))))))
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397 (unless (equal connection-result "PREAUTH")
398 (if (not (setq credentials
399 (if (eq nnimap-authenticator 'anonymous)
400 (list "anonymous"
401 (message-make-address))
402 (or
403 ;; First look for the credentials based
404 ;; on the virtual server name.
405 (nnimap-credentials
406 (nnoo-current-server 'nnimap) ports t)
407 ;; Then look them up based on the
408 ;; physical address.
409 (nnimap-credentials nnimap-address ports)))))
410 (setq nnimap-object nil)
411 (setq login-result (nnimap-command "LOGIN %S %S"
412 (car credentials)
413 (cadr credentials)))
414 (unless (car login-result)
415 ;; If the login failed, then forget the credentials
416 ;; that are now possibly cached.
417 (dolist (host (list (nnoo-current-server 'nnimap)
418 nnimap-address))
419 (dolist (port ports)
420 (dolist (element '("login" "password"))
421 (auth-source-forget-user-or-password
422 element host port))))
423 (delete-process (nnimap-process nnimap-object))
424 (setq nnimap-object nil))))
425 (when nnimap-object
426 (when (member "QRESYNC" (nnimap-capabilities nnimap-object))
427 (nnimap-command "ENABLE QRESYNC"))
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428 (nnimap-process nnimap-object))))))))
429
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430(defun nnimap-find-parameter (parameter elems)
431 (let (result)
432 (dolist (elem elems)
433 (cond
434 ((equal (car elem) parameter)
435 (setq result (cdr elem)))
436 ((and (equal (car elem) "OK")
437 (consp (cadr elem))
438 (equal (caadr elem) parameter))
439 (setq result (cdr (cadr elem))))))
440 result))
441
286c4fc2 442(deffoo nnimap-close-server (&optional server)
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443 (when (nnoo-change-server 'nnimap server nil)
444 (ignore-errors
445 (delete-process (get-buffer-process (nnimap-buffer))))
d1090fe8 446 (nnoo-close-server 'nnimap server)
71e691a5 447 t))
c113de23 448
286c4fc2 449(deffoo nnimap-request-close ()
20a673b2 450 t)
23f87bed 451
286c4fc2 452(deffoo nnimap-server-opened (&optional server)
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453 (and (nnoo-current-server-p 'nnimap server)
454 nntp-server-buffer
455 (gnus-buffer-live-p nntp-server-buffer)
456 (nnimap-find-connection nntp-server-buffer)))
c113de23 457
286c4fc2 458(deffoo nnimap-status-message (&optional server)
20a673b2 459 nnimap-status-string)
c113de23 460
286c4fc2 461(deffoo nnimap-request-article (article &optional group server to-buffer)
c113de23 462 (with-current-buffer nntp-server-buffer
bdaa75c7 463 (let ((result (nnimap-possibly-change-group group server))
8ccbef23 464 parts structure)
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465 (when (stringp article)
466 (setq article (nnimap-find-article-by-message-id group article)))
467 (when (and result
468 article)
469 (erase-buffer)
470 (with-current-buffer (nnimap-buffer)
471 (erase-buffer)
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472 (when nnimap-fetch-partial-articles
473 (nnimap-command "UID FETCH %d (BODYSTRUCTURE)" article)
474 (goto-char (point-min))
475 (when (re-search-forward "FETCH.*BODYSTRUCTURE" nil t)
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476 (setq structure (ignore-errors
477 (let ((start (point)))
478 (forward-sexp 1)
479 (downcase-region start (point))
480 (goto-char (point))
481 (read (current-buffer))))
9f2d52e7 482 parts (nnimap-find-wanted-parts structure))))
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483 (when (if parts
484 (nnimap-get-partial-article article parts structure)
485 (nnimap-get-whole-article article))
486 (let ((buffer (current-buffer)))
487 (with-current-buffer (or to-buffer nntp-server-buffer)
488 (erase-buffer)
489 (insert-buffer-substring buffer)
490 (nnheader-ms-strip-cr)
491 (cons group article)))))))))
492
493(defun nnimap-get-whole-article (article)
494 (let ((result
495 (nnimap-command
496 (if (nnimap-ver4-p)
497 "UID FETCH %d BODY.PEEK[]"
498 "UID FETCH %d RFC822.PEEK")
499 article)))
500 ;; Check that we really got an article.
501 (goto-char (point-min))
4478e074 502 (unless (re-search-forward "\\* [0-9]+ FETCH" nil t)
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503 (setq result nil))
504 (when result
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505 ;; Remove any data that may have arrived before the FETCH data.
506 (beginning-of-line)
507 (unless (bobp)
508 (delete-region (point-min) (point)))
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509 (let ((bytes (nnimap-get-length)))
510 (delete-region (line-beginning-position)
511 (progn (forward-line 1) (point)))
512 (goto-char (+ (point) bytes))
513 (delete-region (point) (point-max)))
514 t)))
515
516(defun nnimap-ver4-p ()
517 (member "IMAP4REV1" (nnimap-capabilities nnimap-object)))
518
519(defun nnimap-get-partial-article (article parts structure)
520 (let ((result
521 (nnimap-command
522 "UID FETCH %d (%s %s)"
523 article
524 (if (nnimap-ver4-p)
525 "BODY.PEEK[HEADER]"
526 "RFC822.HEADER")
527 (if (nnimap-ver4-p)
528 (mapconcat (lambda (part)
529 (format "BODY.PEEK[%s]" part))
530 parts " ")
531 (mapconcat (lambda (part)
532 (format "RFC822.PEEK[%s]" part))
533 parts " ")))))
534 (when result
535 (nnimap-convert-partial-article structure))))
536
537(defun nnimap-convert-partial-article (structure)
538 ;; First just skip past the headers.
539 (goto-char (point-min))
540 (let ((bytes (nnimap-get-length))
541 id parts)
542 ;; Delete "FETCH" line.
543 (delete-region (line-beginning-position)
544 (progn (forward-line 1) (point)))
545 (goto-char (+ (point) bytes))
546 ;; Collect all the body parts.
547 (while (looking-at ".*BODY\\[\\([.0-9]+\\)\\]")
548 (setq id (match-string 1)
549 bytes (nnimap-get-length))
550 (beginning-of-line)
551 (delete-region (point) (progn (forward-line 1) (point)))
552 (push (list id (buffer-substring (point) (+ (point) bytes)))
553 parts)
554 (delete-region (point) (+ (point) bytes)))
555 ;; Delete trailing junk.
556 (delete-region (point) (point-max))
557 ;; Now insert all the parts again where they fit in the structure.
558 (nnimap-insert-partial-structure structure parts)
559 t))
560
561(defun nnimap-insert-partial-structure (structure parts &optional subp)
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562 (let (type boundary)
563 (let ((bstruc structure))
564 (while (consp (car bstruc))
565 (pop bstruc))
566 (setq type (car bstruc))
567 (setq bstruc (car (cdr bstruc)))
568 (when (and (stringp (car bstruc))
569 (string= (downcase (car bstruc)) "boundary"))
570 (setq boundary (cadr bstruc))))
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571 (when subp
572 (insert (format "Content-type: multipart/%s; boundary=%S\n\n"
573 (downcase type) boundary)))
574 (while (not (stringp (car structure)))
575 (insert "\n--" boundary "\n")
576 (if (consp (caar structure))
577 (nnimap-insert-partial-structure (pop structure) parts t)
578 (let ((bit (pop structure)))
579 (insert (format "Content-type: %s/%s"
580 (downcase (nth 0 bit))
581 (downcase (nth 1 bit))))
582 (if (member "CHARSET" (nth 2 bit))
583 (insert (format
584 "; charset=%S\n" (cadr (member "CHARSET" (nth 2 bit)))))
585 (insert "\n"))
586 (insert (format "Content-transfer-encoding: %s\n"
587 (nth 5 bit)))
588 (insert "\n")
589 (when (assoc (nth 9 bit) parts)
590 (insert (cadr (assoc (nth 9 bit) parts)))))))
591 (insert "\n--" boundary "--\n")))
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592
593(defun nnimap-find-wanted-parts (structure)
594 (message-flatten-list (nnimap-find-wanted-parts-1 structure "")))
595
596(defun nnimap-find-wanted-parts-1 (structure prefix)
597 (let ((num 1)
598 parts)
599 (while (consp (car structure))
600 (let ((sub (pop structure)))
601 (if (consp (car sub))
602 (push (nnimap-find-wanted-parts-1
603 sub (if (string= prefix "")
604 (number-to-string num)
605 (format "%s.%s" prefix num)))
606 parts)
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607 (let ((type (format "%s/%s" (nth 0 sub) (nth 1 sub)))
608 (id (if (string= prefix "")
bdaa75c7 609 (number-to-string num)
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610 (format "%s.%s" prefix num))))
611 (setcar (nthcdr 9 sub) id)
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612 (when (if (eq nnimap-fetch-partial-articles t)
613 (equal id "1")
614 (string-match nnimap-fetch-partial-articles type))
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615 (push id parts))))
616 (incf num)))
bdaa75c7 617 (nreverse parts)))
20a673b2 618
286c4fc2 619(deffoo nnimap-request-group (group &optional server dont-check info)
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620 (let ((result (nnimap-possibly-change-group
621 ;; Don't SELECT the group if we're going to select it
622 ;; later, anyway.
623 (if dont-check
624 nil
625 group)
626 server))
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627 articles active marks high low)
628 (with-current-buffer nntp-server-buffer
20a673b2 629 (when result
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630 (if (and dont-check
631 (setq active (nth 2 (assoc group nnimap-current-infos))))
632 (insert (format "211 %d %d %d %S\n"
633 (- (cdr active) (car active))
634 (car active)
635 (cdr active)
636 group))
637 (with-current-buffer (nnimap-buffer)
638 (erase-buffer)
639 (let ((group-sequence
0617bb00 640 (nnimap-send-command "SELECT %S" (utf7-encode group t)))
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641 (flag-sequence
642 (nnimap-send-command "UID FETCH 1:* FLAGS")))
7cad71ad 643 (setf (nnimap-group nnimap-object) group)
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644 (nnimap-wait-for-response flag-sequence)
645 (setq marks
646 (nnimap-flags-to-marks
647 (nnimap-parse-flags
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648 (list (list group-sequence flag-sequence
649 1 group "SELECT")))))
650 (when (and info
651 marks)
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652 (nnimap-update-infos marks (list info)))
653 (goto-char (point-max))
b1ae92ba 654 (let ((uidnext (nth 5 (car marks))))
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655 (setq high (or (if uidnext
656 (1- uidnext)
657 (nth 3 (car marks)))
658 0)
659 low (or (nth 4 (car marks)) uidnext 1)))))
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660 (erase-buffer)
661 (insert
662 (format
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663 "211 %d %d %d %S\n" (1+ (- high low)) low high group)))
664 t))))
665
666(deffoo nnimap-request-create-group (group &optional server args)
667 (when (nnimap-possibly-change-group nil server)
668 (with-current-buffer (nnimap-buffer)
669 (car (nnimap-command "CREATE %S" (utf7-encode group t))))))
c113de23 670
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671(deffoo nnimap-request-delete-group (group &optional force server)
672 (when (nnimap-possibly-change-group nil server)
673 (with-current-buffer (nnimap-buffer)
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674 (car (nnimap-command "DELETE %S" (utf7-encode group t))))))
675
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676(deffoo nnimap-request-rename-group (group new-name &optional server)
677 (when (nnimap-possibly-change-group nil server)
678 (with-current-buffer (nnimap-buffer)
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679 ;; Make sure we don't have this group open read/write by asking
680 ;; to examine a mailbox that doesn't exist. This seems to be
681 ;; the only way that allows us to reliably go back to unselected
682 ;; state on Courier.
683 (nnimap-command "EXAMINE DOES.NOT.EXIST")
6b7df8d3 684 (setf (nnimap-group nnimap-object) nil)
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685 (car (nnimap-command "RENAME %S %S"
686 (utf7-encode group t) (utf7-encode new-name t))))))
a7dcc87b 687
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688(deffoo nnimap-request-expunge-group (group &optional server)
689 (when (nnimap-possibly-change-group group server)
690 (with-current-buffer (nnimap-buffer)
691 (car (nnimap-command "EXPUNGE")))))
a46359d4 692
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693(defun nnimap-get-flags (spec)
694 (let ((articles nil)
f7aa248a 695 elems end)
20a673b2 696 (with-current-buffer (nnimap-buffer)
c113de23 697 (erase-buffer)
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698 (nnimap-wait-for-response (nnimap-send-command
699 "UID FETCH %s FLAGS" spec))
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700 (setq end (point))
701 (subst-char-in-region (point-min) (point-max)
702 ?\\ ?% t)
20a673b2 703 (goto-char (point-min))
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704 (while (search-forward " FETCH " end t)
705 (setq elems (read (current-buffer)))
706 (push (cons (cadr (memq 'UID elems))
707 (cadr (memq 'FLAGS elems)))
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708 articles)))
709 (nreverse articles)))
a1506d29 710
286c4fc2 711(deffoo nnimap-close-group (group &optional server)
20a673b2 712 t)
c113de23 713
01c52d31 714(deffoo nnimap-request-move-article (article group server accept-form
20a673b2 715 &optional last internal-move-group)
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716 (with-temp-buffer
717 (when (nnimap-request-article article group server (current-buffer))
718 ;; If the move is internal (on the same server), just do it the easy
719 ;; way.
720 (let ((message-id (message-field-value "message-id")))
721 (if internal-move-group
722 (let ((result
723 (with-current-buffer (nnimap-buffer)
724 (nnimap-command "UID COPY %d %S"
725 article
726 (utf7-encode internal-move-group t)))))
727 (when (car result)
a46359d4 728 (nnimap-delete-article article)
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729 (cons internal-move-group
730 (nnimap-find-article-by-message-id
731 internal-move-group message-id))))
732 ;; Move the article to a different method.
733 (let ((result (eval accept-form)))
734 (when result
735 (nnimap-delete-article article)
736 result)))))))
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737
738(deffoo nnimap-request-expire-articles (articles group &optional server force)
739 (cond
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740 ((null articles)
741 nil)
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742 ((not (nnimap-possibly-change-group group server))
743 articles)
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744 ((and force
745 (eq nnmail-expiry-target 'delete))
4478e074 746 (unless (nnimap-delete-article (gnus-compress-sequence articles))
283f7b93 747 (nnheader-message 7 "Article marked for deletion, but not expunged."))
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748 nil)
749 (t
0617bb00 750 (let ((deletable-articles
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751 (if (or force
752 (eq nnmail-expiry-wait 'immediate))
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753 articles
754 (gnus-sorted-intersection
755 articles
756 (nnimap-find-expired-articles group)))))
757 (if (null deletable-articles)
758 articles
759 (if (eq nnmail-expiry-target 'delete)
4478e074 760 (nnimap-delete-article (gnus-compress-sequence deletable-articles))
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761 (setq deletable-articles
762 (nnimap-process-expiry-targets
763 deletable-articles group server)))
764 ;; Return the articles we didn't delete.
765 (gnus-sorted-complement articles deletable-articles))))))
766
767(defun nnimap-process-expiry-targets (articles group server)
768 (let ((deleted-articles nil))
769 (dolist (article articles)
770 (let ((target nnmail-expiry-target))
771 (with-temp-buffer
772 (when (nnimap-request-article article group server (current-buffer))
283f7b93 773 (nnheader-message 7 "Expiring article %s:%d" group article)
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774 (when (functionp target)
775 (setq target (funcall target group)))
776 (when (and target
777 (not (eq target 'delete)))
778 (if (or (gnus-request-group target t)
779 (gnus-request-create-group target))
780 (nnmail-expiry-target-group target group)
781 (setq target nil)))
782 (when target
783 (push article deleted-articles))))))
784 ;; Change back to the current group again.
785 (nnimap-possibly-change-group group server)
786 (setq deleted-articles (nreverse deleted-articles))
4478e074 787 (nnimap-delete-article (gnus-compress-sequence deleted-articles))
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788 deleted-articles))
789
790(defun nnimap-find-expired-articles (group)
791 (let ((cutoff (nnmail-expired-article-p group nil nil)))
792 (with-current-buffer (nnimap-buffer)
793 (let ((result
794 (nnimap-command
795 "UID SEARCH SENTBEFORE %s"
796 (format-time-string
797 (format "%%d-%s-%%Y"
798 (upcase
799 (car (rassoc (nth 4 (decode-time cutoff))
800 parse-time-months))))
801 cutoff))))
802 (and (car result)
803 (delete 0 (mapcar #'string-to-number
804 (cdr (assoc "SEARCH" (cdr result))))))))))
805
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806
807(defun nnimap-find-article-by-message-id (group message-id)
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808 (with-current-buffer (nnimap-buffer)
809 (erase-buffer)
810 (setf (nnimap-group nnimap-object) nil)
811 (nnimap-send-command "EXAMINE %S" (utf7-encode group t))
812 (let ((sequence
813 (nnimap-send-command "UID SEARCH HEADER Message-Id %S" message-id))
814 article result)
815 (setq result (nnimap-wait-for-response sequence))
816 (when (and result
817 (car (setq result (nnimap-parse-response))))
818 ;; Select the last instance of the message in the group.
819 (and (setq article
820 (car (last (assoc "SEARCH" (cdr result)))))
821 (string-to-number article))))))
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822
823(defun nnimap-delete-article (articles)
824 (with-current-buffer (nnimap-buffer)
825 (nnimap-command "UID STORE %s +FLAGS.SILENT (\\Deleted)"
826 (nnimap-article-ranges articles))
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827 (cond
828 ((member "UIDPLUS" (nnimap-capabilities nnimap-object))
829 (nnimap-command "UID EXPUNGE %s"
830 (nnimap-article-ranges articles))
831 t)
832 (nnimap-expunge
833 (nnimap-command "EXPUNGE")
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834 t)
835 (t (gnus-message 7 (concat "nnimap: nnimap-expunge is not set and the "
836 "server doesn't support UIDPLUS, so we won't "
837 "delete this article now"))))))
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838
839(deffoo nnimap-request-scan (&optional group server)
840 (when (and (nnimap-possibly-change-group nil server)
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841 nnimap-inbox
842 nnimap-split-methods)
283f7b93 843 (nnheader-message 7 "nnimap %s splitting mail..." server)
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844 (nnimap-split-incoming-mail)))
845
846(defun nnimap-marks-to-flags (marks)
847 (let (flags flag)
848 (dolist (mark marks)
849 (when (setq flag (cadr (assq mark nnimap-mark-alist)))
850 (push flag flags)))
851 flags))
852
286c4fc2 853(deffoo nnimap-request-set-mark (group actions &optional server)
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854 (when (nnimap-possibly-change-group group server)
855 (let (sequence)
856 (with-current-buffer (nnimap-buffer)
229b59da 857 (erase-buffer)
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858 ;; Just send all the STORE commands without waiting for
859 ;; response. If they're successful, they're successful.
860 (dolist (action actions)
861 (destructuring-bind (range action marks) action
862 (let ((flags (nnimap-marks-to-flags marks)))
863 (when flags
864 (setq sequence (nnimap-send-command
865 "UID STORE %s %sFLAGS.SILENT (%s)"
866 (nnimap-article-ranges range)
867 (if (eq action 'del)
868 "-"
869 "+")
870 (mapconcat #'identity flags " ")))))))
871 ;; Wait for the last command to complete to avoid later
872 ;; syncronisation problems with the stream.
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873 (when sequence
874 (nnimap-wait-for-response sequence))))))
a1506d29 875
c113de23 876(deffoo nnimap-request-accept-article (group &optional server last)
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877 (when (nnimap-possibly-change-group nil server)
878 (nnmail-check-syntax)
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879 (let ((message-id (message-field-value "message-id"))
880 sequence message)
881 (nnimap-add-cr)
882 (setq message (buffer-string))
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883 (with-current-buffer (nnimap-buffer)
884 (setq sequence (nnimap-send-command
885 "APPEND %S {%d}" (utf7-encode group t)
886 (length message)))
887 (process-send-string (get-buffer-process (current-buffer)) message)
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888 (process-send-string (get-buffer-process (current-buffer))
889 (if (nnimap-newlinep nnimap-object)
890 "\n"
891 "\r\n"))
20a673b2 892 (let ((result (nnimap-get-response sequence)))
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893 (if (not (car result))
894 (progn
283f7b93 895 (nnheader-message 7 "%s" (nnheader-get-report-string 'nnimap))
062eae99 896 nil)
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897 (cons group
898 (nnimap-find-article-by-message-id group message-id))))))))
899
900(defun nnimap-add-cr ()
901 (goto-char (point-min))
902 (while (re-search-forward "\r?\n" nil t)
903 (replace-match "\r\n" t t)))
904
905(defun nnimap-get-groups ()
906 (let ((result (nnimap-command "LIST \"\" \"*\""))
907 groups)
908 (when (car result)
909 (dolist (line (cdr result))
910 (when (and (equal (car line) "LIST")
911 (not (and (caadr line)
912 (string-match "noselect" (caadr line)))))
913 (push (car (last line)) groups)))
914 (nreverse groups))))
915
286c4fc2 916(deffoo nnimap-request-list (&optional server)
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917 (nnimap-possibly-change-group nil server)
918 (with-current-buffer nntp-server-buffer
919 (erase-buffer)
920 (let ((groups
921 (with-current-buffer (nnimap-buffer)
922 (nnimap-get-groups)))
923 sequences responses)
924 (when groups
925 (with-current-buffer (nnimap-buffer)
b069e5a6 926 (setf (nnimap-group nnimap-object) nil)
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927 (dolist (group groups)
928 (push (list (nnimap-send-command "EXAMINE %S" (utf7-encode group t))
929 group)
930 sequences))
931 (nnimap-wait-for-response (caar sequences))
932 (setq responses
933 (nnimap-get-responses (mapcar #'car sequences))))
934 (dolist (response responses)
935 (let* ((sequence (car response))
936 (response (cadr response))
937 (group (cadr (assoc sequence sequences))))
938 (when (and group
939 (equal (caar response) "OK"))
940 (let ((uidnext (nnimap-find-parameter "UIDNEXT" response))
941 highest exists)
942 (dolist (elem response)
943 (when (equal (cadr elem) "EXISTS")
944 (setq exists (string-to-number (car elem)))))
945 (when uidnext
946 (setq highest (1- (string-to-number (car uidnext)))))
947 (cond
948 ((null highest)
949 (insert (format "%S 0 1 y\n" (utf7-decode group t))))
950 ((zerop exists)
951 ;; Empty group.
952 (insert (format "%S %d %d y\n"
953 (utf7-decode group t) highest (1+ highest))))
954 (t
955 ;; Return the widest possible range.
956 (insert (format "%S %d 1 y\n" (utf7-decode group t)
957 (or highest exists)))))))))
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958 t))))
959
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960(deffoo nnimap-request-newgroups (date &optional server)
961 (nnimap-possibly-change-group nil server)
962 (with-current-buffer nntp-server-buffer
963 (erase-buffer)
964 (dolist (group (with-current-buffer (nnimap-buffer)
965 (nnimap-get-groups)))
966 (unless (assoc group nnimap-current-infos)
967 ;; Insert dummy numbers here -- they don't matter.
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968 (insert (format "%S 0 1 y\n" group))))
969 t))
a3f57c41 970
286c4fc2 971(deffoo nnimap-retrieve-group-data-early (server infos)
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972 (when (nnimap-possibly-change-group nil server)
973 (with-current-buffer (nnimap-buffer)
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974 (erase-buffer)
975 (setf (nnimap-group nnimap-object) nil)
20a673b2 976 ;; QRESYNC handling isn't implemented.
dab0271f 977 (let ((qresyncp (member "QRESYNC" (nnimap-capabilities nnimap-object)))
f7aa248a 978 params groups sequences active uidvalidity modseq group)
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979 ;; Go through the infos and gather the data needed to know
980 ;; what and how to request the data.
981 (dolist (info infos)
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982 (setq params (gnus-info-params info)
983 group (gnus-group-real-name (gnus-info-group info))
984 active (cdr (assq 'active params))
985 uidvalidity (cdr (assq 'uidvalidity params))
986 modseq (cdr (assq 'modseq params)))
20a673b2 987 (if (and qresyncp
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988 uidvalidity
989 modseq)
20a673b2 990 (push
f7aa248a 991 (list (nnimap-send-command "EXAMINE %S (QRESYNC (%s %s))"
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992 (utf7-encode group t)
993 uidvalidity modseq)
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994 'qresync
995 nil group 'qresync)
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996 sequences)
997 (let ((start
f7aa248a 998 (if (and active uidvalidity)
20a673b2 999 ;; Fetch the last 100 flags.
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1000 (max 1 (- (cdr active) 100))
1001 1))
1002 (command
1003 (if uidvalidity
1004 "EXAMINE"
1005 ;; If we don't have a UIDVALIDITY, then this is
1006 ;; the first time we've seen the group, so we
1007 ;; have to do a SELECT (which is slower than an
1008 ;; examine), but will tell us whether the group
1009 ;; is read-only or not.
1010 "SELECT")))
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1011 (push (list (nnimap-send-command "%s %S" command
1012 (utf7-encode group t))
20a673b2 1013 (nnimap-send-command "UID FETCH %d:* FLAGS" start)
f7aa248a 1014 start group command)
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1015 sequences)))
1016 ;; Some servers apparently can't have many outstanding
1017 ;; commands, so throttle them.
1018 (when (and (not nnimap-streaming)
1019 (car sequences))
1020 (nnimap-wait-for-response (caar sequences))))
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1021 sequences))))
1022
286c4fc2 1023(deffoo nnimap-finish-retrieve-group-infos (server infos sequences)
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1024 (when (and sequences
1025 (nnimap-possibly-change-group nil server))
1026 (with-current-buffer (nnimap-buffer)
1027 ;; Wait for the final data to trickle in.
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1028 (when (nnimap-wait-for-response (if (eq (cadar sequences) 'qresync)
1029 (caar sequences)
1030 (cadar sequences))
1031 t)
1032 ;; Now we should have most of the data we need, no matter
1033 ;; whether we're QRESYNCING, fetching all the flags from
1034 ;; scratch, or just fetching the last 100 flags per group.
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1035 (nnimap-update-infos (nnimap-flags-to-marks
1036 (nnimap-parse-flags
1037 (nreverse sequences)))
1038 infos)
1039 ;; Finally, just return something resembling an active file in
1040 ;; the nntp buffer, so that the agent can save the info, too.
1041 (with-current-buffer nntp-server-buffer
1042 (erase-buffer)
1043 (dolist (info infos)
1044 (let* ((group (gnus-info-group info))
1045 (active (gnus-active group)))
1046 (when active
1047 (insert (format "%S %d %d y\n"
1048 (gnus-group-real-name group)
1049 (cdr active)
1050 (car active)))))))))))
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1051
1052(defun nnimap-update-infos (flags infos)
1053 (dolist (info infos)
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1054 (let* ((group (gnus-group-real-name (gnus-info-group info)))
1055 (marks (cdr (assoc group flags))))
1056 (when marks
1057 (nnimap-update-info info marks)))))
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1058
1059(defun nnimap-update-info (info marks)
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1060 (destructuring-bind (existing flags high low uidnext start-article
1061 permanent-flags uidvalidity
1062 vanished highestmodseq) marks
1063 (cond
1064 ;; Ignore groups with no UIDNEXT/marks. This happens for
1065 ;; completely empty groups.
1066 ((and (not existing)
1067 (not uidnext))
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1068 (let ((active (cdr (assq 'active (gnus-info-params info)))))
1069 (when active
1070 (gnus-set-active (gnus-info-group info) active))))
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1071 ;; We have a mismatch between the old and new UIDVALIDITY
1072 ;; identifiers, so we have to re-request the group info (the next
1073 ;; time). This virtually never happens.
1074 ((let ((old-uidvalidity
1075 (cdr (assq 'uidvalidity (gnus-info-params info)))))
1076 (and old-uidvalidity
1077 (not (equal old-uidvalidity uidvalidity))
1078 (> start-article 1)))
1079 (gnus-group-remove-parameter info 'uidvalidity)
1080 (gnus-group-remove-parameter info 'modseq))
1081 ;; We have the data needed to update.
1082 (t
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1083 (let* ((group (gnus-info-group info))
1084 (completep (and start-article
1085 (= start-article 1)))
1086 (active (or (gnus-active group)
1087 (cdr (assq 'active (gnus-info-params info))))))
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1088 (when uidnext
1089 (setq high (1- uidnext)))
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1090 ;; First set the active ranges based on high/low.
1091 (if (or completep
1092 (not (gnus-active group)))
1093 (gnus-set-active group
61b1af82
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1094 (cond
1095 ((and low high)
1096 (cons low high))
1097 (uidnext
20a673b2 1098 ;; No articles in this group.
61b1af82 1099 (cons uidnext (1- uidnext)))
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1100 (active
1101 active)
61b1af82
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1102 (start-article
1103 (cons start-article (1- start-article)))
1104 (t
1105 ;; No articles and no uidnext.
1106 nil)))
9f2d52e7
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1107 (gnus-set-active
1108 group
dab0271f 1109 (cons (car active)
9f2d52e7 1110 (or high (1- uidnext)))))
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1111 ;; See whether this is a read-only group.
1112 (unless (eq permanent-flags 'not-scanned)
1113 (gnus-group-set-parameter
1114 info 'permanent-flags
7cad71ad
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1115 (and (or (memq '%* permanent-flags)
1116 (memq '%Seen permanent-flags))
1117 permanent-flags)))
f7aa248a
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1118 ;; Update marks and read articles if this isn't a
1119 ;; read-only IMAP group.
7cad71ad
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1120 (when (setq permanent-flags
1121 (cdr (assq 'permanent-flags (gnus-info-params info))))
f7aa248a
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1122 (if (and highestmodseq
1123 (not start-article))
1124 ;; We've gotten the data by QRESYNCing.
1125 (nnimap-update-qresync-info
dab0271f 1126 info existing (nnimap-imap-ranges-to-gnus-ranges vanished) flags)
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1127 ;; Do normal non-QRESYNC flag updates.
1128 ;; Update the list of read articles.
1129 (let* ((unread
1130 (gnus-compress-sequence
1131 (gnus-set-difference
1132 (gnus-set-difference
1133 existing
1134 (cdr (assoc '%Seen flags)))
1135 (cdr (assoc '%Flagged flags)))))
1136 (read (gnus-range-difference
1137 (cons start-article high) unread)))
1138 (when (> start-article 1)
1139 (setq read
1140 (gnus-range-nconcat
1141 (if (> start-article 1)
1142 (gnus-sorted-range-intersection
1143 (cons 1 (1- start-article))
1144 (gnus-info-read info))
1145 (gnus-info-read info))
1146 read)))
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1147 (when (or (not (listp permanent-flags))
1148 (memq '%Seen permanent-flags))
1149 (gnus-info-set-read info read))
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1150 ;; Update the marks.
1151 (setq marks (gnus-info-marks info))
1152 (dolist (type (cdr nnimap-mark-alist))
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1153 (when (or (not (listp permanent-flags))
1154 (memq (assoc (caddr type) flags) permanent-flags)
1155 (memq '%* permanent-flags))
1156 (let ((old-marks (assoc (car type) marks))
1157 (new-marks
1158 (gnus-compress-sequence
1159 (cdr (or (assoc (caddr type) flags) ; %Flagged
1160 (assoc (intern (cadr type) obarray) flags)
1161 (assoc (cadr type) flags)))))) ; "\Flagged"
1162 (setq marks (delq old-marks marks))
1163 (pop old-marks)
1164 (when (and old-marks
1165 (> start-article 1))
1166 (setq old-marks (gnus-range-difference
1167 old-marks
1168 (cons start-article high)))
1169 (setq new-marks (gnus-range-nconcat old-marks new-marks)))
1170 (when new-marks
1171 (push (cons (car type) new-marks) marks)))))
1172 (gnus-info-set-marks info marks t))))
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1173 ;; Note the active level for the next run-through.
1174 (gnus-group-set-parameter info 'active (gnus-active group))
1175 (gnus-group-set-parameter info 'uidvalidity uidvalidity)
1176 (gnus-group-set-parameter info 'modseq highestmodseq)
1177 (nnimap-store-info info (gnus-active group)))))))
1178
dab0271f 1179(defun nnimap-update-qresync-info (info existing vanished flags)
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1180 ;; Add all the vanished articles to the list of read articles.
1181 (gnus-info-set-read
1182 info
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1183 (gnus-add-to-range
1184 (gnus-add-to-range
1185 (gnus-range-add (gnus-info-read info)
1186 vanished)
1187 (cdr (assq '%Flagged flags)))
1188 (cdr (assq '%Seen flags))))
1189 (let ((marks (gnus-info-marks info)))
1190 (dolist (type (cdr nnimap-mark-alist))
1191 (let ((ticks (assoc (car type) marks))
1192 (new-marks
1193 (cdr (or (assoc (caddr type) flags) ; %Flagged
1194 (assoc (intern (cadr type) obarray) flags)
1195 (assoc (cadr type) flags))))) ; "\Flagged"
1196 (setq marks (delq ticks marks))
1197 (pop ticks)
1198 ;; Add the new marks we got.
1199 (setq ticks (gnus-add-to-range ticks new-marks))
1200 ;; Remove the marks from messages that don't have them.
1201 (setq ticks (gnus-remove-from-range
1202 ticks
1203 (gnus-compress-sequence
1204 (gnus-sorted-complement existing new-marks))))
1205 (when ticks
1206 (push (cons (car type) ticks) marks)))
1207 (gnus-info-set-marks info marks t))))
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1208
1209(defun nnimap-imap-ranges-to-gnus-ranges (irange)
1210 (if (zerop (length irange))
1211 nil
1212 (let ((result nil))
1213 (dolist (elem (split-string irange ","))
1214 (push
1215 (if (string-match ":" elem)
1216 (let ((numbers (split-string elem ":")))
1217 (cons (string-to-number (car numbers))
1218 (string-to-number (cadr numbers))))
1219 (string-to-number elem))
1220 result))
1221 (nreverse result))))
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1222
1223(defun nnimap-store-info (info active)
1224 (let* ((group (gnus-group-real-name (gnus-info-group info)))
1225 (entry (assoc group nnimap-current-infos)))
1226 (if entry
1227 (setcdr entry (list info active))
1228 (push (list group info active) nnimap-current-infos))))
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1229
1230(defun nnimap-flags-to-marks (groups)
f7aa248a
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1231 (let (data group totalp uidnext articles start-article mark permanent-flags
1232 uidvalidity vanished highestmodseq)
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1233 (dolist (elem groups)
1234 (setq group (car elem)
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1235 uidnext (nth 1 elem)
1236 start-article (nth 2 elem)
1237 permanent-flags (nth 3 elem)
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1238 uidvalidity (nth 4 elem)
1239 vanished (nth 5 elem)
1240 highestmodseq (nth 6 elem)
1241 articles (nthcdr 7 elem))
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1242 (let ((high (caar articles))
1243 marks low existing)
1244 (dolist (article articles)
1245 (setq low (car article))
1246 (push (car article) existing)
1247 (dolist (flag (cdr article))
1248 (setq mark (assoc flag marks))
1249 (if (not mark)
1250 (push (list flag (car article)) marks)
b069e5a6
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1251 (setcdr mark (cons (car article) (cdr mark))))))
1252 (push (list group existing marks high low uidnext start-article
f7aa248a 1253 permanent-flags uidvalidity vanished highestmodseq)
b069e5a6 1254 data)))
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1255 data))
1256
1257(defun nnimap-parse-flags (sequences)
1258 (goto-char (point-min))
b069e5a6
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1259 ;; Change \Delete etc to %Delete, so that the reader can read it.
1260 (subst-char-in-region (point-min) (point-max)
1261 ?\\ ?% t)
f7aa248a
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1262 (let (start end articles groups uidnext elems permanent-flags
1263 uidvalidity vanished highestmodseq)
20a673b2 1264 (dolist (elem sequences)
f7aa248a
G
1265 (destructuring-bind (group-sequence flag-sequence totalp group command)
1266 elem
b069e5a6 1267 (setq start (point))
f7aa248a
G
1268 (when (and
1269 ;; The EXAMINE was successful.
1270 (search-forward (format "\n%d OK " group-sequence) nil t)
1271 (progn
1272 (forward-line 1)
1273 (setq end (point))
1274 (goto-char start)
1275 (setq permanent-flags
1276 (if (equal command "SELECT")
b069e5a6 1277 (and (search-forward "PERMANENTFLAGS "
f7aa248a
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1278 (or end (point-min)) t)
1279 (read (current-buffer)))
1280 'not-scanned))
1281 (goto-char start)
1282 (setq uidnext
1283 (and (search-forward "UIDNEXT "
1284 (or end (point-min)) t)
1285 (read (current-buffer))))
1286 (goto-char start)
1287 (setq uidvalidity
1288 (and (re-search-forward "UIDVALIDITY \\([0-9]+\\)"
1289 (or end (point-min)) t)
1290 ;; Store UIDVALIDITY as a string, as it's
1291 ;; too big for 32-bit Emacsen, usually.
1292 (match-string 1)))
1293 (goto-char start)
1294 (setq vanished
1295 (and (eq flag-sequence 'qresync)
1296 (re-search-forward "VANISHED.* \\([0-9:,]+\\)"
1297 (or end (point-min)) t)
1298 (match-string 1)))
1299 (goto-char start)
1300 (setq highestmodseq
1301 (and (search-forward "HIGHESTMODSEQ "
1302 (or end (point-min)) t)
1303 (read (current-buffer))))
1304 (goto-char end)
1305 (forward-line -1))
1306 ;; The UID FETCH FLAGS was successful.
1307 (or (eq flag-sequence 'qresync)
1308 (search-forward (format "\n%d OK " flag-sequence) nil t)))
1309 (if (eq flag-sequence 'qresync)
1310 (progn
1311 (goto-char start)
1312 (setq start end))
1313 (setq start (point))
1314 (goto-char end))
a1d16a7b 1315 (while (re-search-forward "^\\* [0-9]+ FETCH " start t)
b069e5a6
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1316 (setq elems (read (current-buffer)))
1317 (push (cons (cadr (memq 'UID elems))
1318 (cadr (memq 'FLAGS elems)))
20a673b2 1319 articles))
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1320 (push (nconc (list group uidnext totalp permanent-flags uidvalidity
1321 vanished highestmodseq)
1322 articles)
b069e5a6 1323 groups)
f7aa248a 1324 (goto-char end)
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1325 (setq articles nil))))
1326 groups))
1327
1328(defun nnimap-find-process-buffer (buffer)
1329 (cadr (assoc buffer nnimap-connection-alist)))
1330
286c4fc2 1331(deffoo nnimap-request-post (&optional server)
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1332 (setq nnimap-status-string "Read-only server")
1333 nil)
c113de23 1334
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1335(deffoo nnimap-request-thread (id)
1336 (let* ((refs (split-string
1337 (or (mail-header-references (gnus-summary-article-header))
1338 "")))
1339 (cmd (let ((value
1340 (format
1341 "(OR HEADER REFERENCES %s HEADER Message-Id %s)"
1342 id id)))
1343 (dolist (refid refs value)
1344 (setq value (format
1345 "(OR (OR HEADER Message-Id %s HEADER REFERENCES %s) %s)"
1346 refid refid value)))))
1347 (result
1348 (with-current-buffer (nnimap-buffer)
1349 (nnimap-command "UID SEARCH %s" cmd))))
1350 (gnus-fetch-headers (and (car result)
1351 (delete 0 (mapcar #'string-to-number
1352 (cdr (assoc "SEARCH" (cdr result)))))))))
1353
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1354(defun nnimap-possibly-change-group (group server)
1355 (let ((open-result t))
1356 (when (and server
1357 (not (nnimap-server-opened server)))
1358 (setq open-result (nnimap-open-server server)))
1359 (cond
1360 ((not open-result)
1361 nil)
1362 ((not group)
1363 t)
1364 (t
1365 (with-current-buffer (nnimap-buffer)
1366 (if (equal group (nnimap-group nnimap-object))
1367 t
1368 (let ((result (nnimap-command "SELECT %S" (utf7-encode group t))))
1369 (when (car result)
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1370 (setf (nnimap-group nnimap-object) group
1371 (nnimap-select-result nnimap-object) result)
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1372 result))))))))
1373
1374(defun nnimap-find-connection (buffer)
1375 "Find the connection delivering to BUFFER."
1376 (let ((entry (assoc buffer nnimap-connection-alist)))
1377 (when entry
1378 (if (and (buffer-name (cadr entry))
1379 (get-buffer-process (cadr entry))
1380 (memq (process-status (get-buffer-process (cadr entry)))
1381 '(open run)))
1382 (get-buffer-process (cadr entry))
1383 (setq nnimap-connection-alist (delq entry nnimap-connection-alist))
1384 nil))))
1385
1386(defvar nnimap-sequence 0)
1387
1388(defun nnimap-send-command (&rest args)
1389 (process-send-string
1390 (get-buffer-process (current-buffer))
1391 (nnimap-log-command
286c4fc2 1392 (format "%d %s%s\n"
20a673b2 1393 (incf nnimap-sequence)
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1394 (apply #'format args)
1395 (if (nnimap-newlinep nnimap-object)
1396 ""
1397 "\r"))))
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1398 nnimap-sequence)
1399
1400(defun nnimap-log-command (command)
1401 (with-current-buffer (get-buffer-create "*imap log*")
1402 (goto-char (point-max))
1403 (insert (format-time-string "%H:%M:%S") " " command))
1404 command)
1405
1406(defun nnimap-command (&rest args)
1407 (erase-buffer)
61b1af82 1408 (setf (nnimap-last-command-time nnimap-object) (current-time))
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1409 (let* ((sequence (apply #'nnimap-send-command args))
1410 (response (nnimap-get-response sequence)))
1411 (if (equal (caar response) "OK")
1412 (cons t response)
1413 (nnheader-report 'nnimap "%s"
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1414 (mapconcat (lambda (a)
1415 (format "%s" a))
1416 (car response) " "))
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1417 nil)))
1418
1419(defun nnimap-get-response (sequence)
1420 (nnimap-wait-for-response sequence)
1421 (nnimap-parse-response))
1422
286c4fc2
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1423(defun nnimap-wait-for-connection ()
1424 (let ((process (get-buffer-process (current-buffer))))
1425 (goto-char (point-min))
1426 (while (and (memq (process-status process)
1427 '(open run))
6b958814 1428 (not (re-search-forward "^[*.] .*\n" nil t)))
286c4fc2
LMI
1429 (nnheader-accept-process-output process)
1430 (goto-char (point-min)))
bdaa75c7 1431 (forward-line -1)
6b958814 1432 (and (looking-at "[*.] \\([A-Z0-9]+\\)")
bdaa75c7 1433 (match-string 1))))
286c4fc2 1434
20a673b2 1435(defun nnimap-wait-for-response (sequence &optional messagep)
8ccbef23
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1436 (let ((process (get-buffer-process (current-buffer)))
1437 openp)
dab0271f
G
1438 (condition-case nil
1439 (progn
1440 (goto-char (point-max))
1441 (while (and (setq openp (memq (process-status process)
1442 '(open run)))
1443 (not (re-search-backward
1444 (format "^%d .*\n" sequence)
1445 (if nnimap-streaming
1446 (max (point-min) (- (point) 500))
1447 (point-min))
1448 t)))
1449 (when messagep
283f7b93 1450 (nnheader-message 7 "nnimap read %dk" (/ (buffer-size) 1000)))
dab0271f
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1451 (nnheader-accept-process-output process)
1452 (goto-char (point-max)))
1453 openp)
1454 (quit
1455 ;; The user hit C-g while we were waiting: kill the process, in case
1456 ;; it's a gnutls-cli process that's stuck (tends to happen a lot behind
1457 ;; NAT routers).
1458 (delete-process process)
1459 nil))))
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1460
1461(defun nnimap-parse-response ()
1462 (let ((lines (split-string (nnimap-last-response-string) "\r\n" t))
1463 result)
1464 (dolist (line lines)
1465 (push (cdr (nnimap-parse-line line)) result))
1466 ;; Return the OK/error code first, and then all the "continuation
1467 ;; lines" afterwards.
1468 (cons (pop result)
1469 (nreverse result))))
1470
1471;; Parse an IMAP response line lightly. They look like
1472;; "* OK [UIDVALIDITY 1164213559] UIDs valid", typically, so parse
1473;; the lines into a list of strings and lists of string.
1474(defun nnimap-parse-line (line)
1475 (let (char result)
1476 (with-temp-buffer
1477 (insert line)
1478 (goto-char (point-min))
1479 (while (not (eobp))
1480 (if (eql (setq char (following-char)) ? )
1481 (forward-char 1)
1482 (push
1483 (cond
1484 ((eql char ?\[)
f7aa248a
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1485 (split-string
1486 (buffer-substring
1487 (1+ (point))
1488 (1- (search-forward "]" (line-end-position) 'move)))))
20a673b2 1489 ((eql char ?\()
f7aa248a
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1490 (split-string
1491 (buffer-substring
1492 (1+ (point))
1493 (1- (search-forward ")" (line-end-position) 'move)))))
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1494 ((eql char ?\")
1495 (forward-char 1)
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1496 (buffer-substring
1497 (point)
1498 (1- (or (search-forward "\"" (line-end-position) 'move)
1499 (point)))))
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1500 (t
1501 (buffer-substring (point) (if (search-forward " " nil t)
1502 (1- (point))
1503 (goto-char (point-max))))))
1504 result)))
1505 (nreverse result))))
1506
1507(defun nnimap-last-response-string ()
1508 (save-excursion
1509 (forward-line 1)
1510 (let ((end (point)))
1511 (forward-line -1)
1512 (when (not (bobp))
1513 (forward-line -1)
1514 (while (and (not (bobp))
1515 (eql (following-char) ?*))
1516 (forward-line -1))
1517 (unless (eql (following-char) ?*)
1518 (forward-line 1)))
1519 (buffer-substring (point) end))))
1520
1521(defun nnimap-get-responses (sequences)
1522 (let (responses)
1523 (dolist (sequence sequences)
1524 (goto-char (point-min))
1525 (when (re-search-forward (format "^%d " sequence) nil t)
1526 (push (list sequence (nnimap-parse-response))
1527 responses)))
1528 responses))
1529
1530(defvar nnimap-incoming-split-list nil)
1531
1532(defun nnimap-fetch-inbox (articles)
1533 (erase-buffer)
1534 (nnimap-wait-for-response
1535 (nnimap-send-command
1536 "UID FETCH %s %s"
1537 (nnimap-article-ranges articles)
1538 (format "(UID %s%s)"
1539 (format
8ccbef23 1540 (if (nnimap-ver4-p)
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1541 "BODY.PEEK[HEADER] BODY.PEEK"
1542 "RFC822.PEEK"))
1543 (if nnimap-split-download-body-default
a46359d4 1544 "[]"
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1545 "[1]")))
1546 t))
1547
1548(defun nnimap-split-incoming-mail ()
1549 (with-current-buffer (nnimap-buffer)
1550 (let ((nnimap-incoming-split-list nil)
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1551 (nnmail-split-methods (if (eq nnimap-split-methods 'default)
1552 nnmail-split-methods
1553 nnimap-split-methods))
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1554 (nnmail-split-fancy (or nnimap-split-fancy
1555 nnmail-split-fancy))
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1556 (nnmail-inhibit-default-split-group t)
1557 (groups (nnimap-get-groups))
1558 new-articles)
1559 (erase-buffer)
1560 (nnimap-command "SELECT %S" nnimap-inbox)
1561 (setq new-articles (nnimap-new-articles (nnimap-get-flags "1:*")))
1562 (when new-articles
1563 (nnimap-fetch-inbox new-articles)
1564 (nnimap-transform-split-mail)
1565 (nnheader-ms-strip-cr)
1566 (nnmail-cache-open)
1567 (nnmail-split-incoming (current-buffer)
1568 #'nnimap-save-mail-spec
1569 nil nil
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1570 #'nnimap-dummy-active-number
1571 #'nnimap-save-mail-spec)
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1572 (when nnimap-incoming-split-list
1573 (let ((specs (nnimap-make-split-specs nnimap-incoming-split-list))
b069e5a6 1574 sequences junk-articles)
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1575 ;; Create any groups that doesn't already exist on the
1576 ;; server first.
1577 (dolist (spec specs)
b069e5a6
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1578 (when (and (not (member (car spec) groups))
1579 (not (eq (car spec) 'junk)))
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1580 (nnimap-command "CREATE %S" (utf7-encode (car spec) t))))
1581 ;; Then copy over all the messages.
1582 (erase-buffer)
1583 (dolist (spec specs)
1584 (let ((group (car spec))
1585 (ranges (cdr spec)))
b069e5a6
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1586 (if (eq group 'junk)
1587 (setq junk-articles ranges)
1588 (push (list (nnimap-send-command
1589 "UID COPY %s %S"
1590 (nnimap-article-ranges ranges)
1591 (utf7-encode group t))
1592 ranges)
1593 sequences))))
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1594 ;; Wait for the last COPY response...
1595 (when sequences
1596 (nnimap-wait-for-response (caar sequences))
1597 ;; And then mark the successful copy actions as deleted,
1598 ;; and possibly expunge them.
1599 (nnimap-mark-and-expunge-incoming
61b1af82
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1600 (nnimap-parse-copied-articles sequences)))
1601 (nnimap-mark-and-expunge-incoming junk-articles)))))))
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1602
1603(defun nnimap-mark-and-expunge-incoming (range)
1604 (when range
1605 (setq range (nnimap-article-ranges range))
229b59da 1606 (erase-buffer)
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1607 (let ((sequence
1608 (nnimap-send-command
1609 "UID STORE %s +FLAGS.SILENT (\\Deleted)" range)))
1610 (cond
1611 ;; If the server supports it, we now delete the message we have
1612 ;; just copied over.
1613 ((member "UIDPLUS" (nnimap-capabilities nnimap-object))
1614 (setq sequence (nnimap-send-command "UID EXPUNGE %s" range)))
1615 ;; If it doesn't support UID EXPUNGE, then we only expunge if the
1616 ;; user has configured it.
b069e5a6 1617 (nnimap-expunge
0617bb00
LMI
1618 (setq sequence (nnimap-send-command "EXPUNGE"))))
1619 (nnimap-wait-for-response sequence))))
20a673b2
KY
1620
1621(defun nnimap-parse-copied-articles (sequences)
1622 (let (sequence copied range)
1623 (goto-char (point-min))
1624 (while (re-search-forward "^\\([0-9]+\\) OK " nil t)
1625 (setq sequence (string-to-number (match-string 1)))
1626 (when (setq range (cadr (assq sequence sequences)))
1627 (push (gnus-uncompress-range range) copied)))
1628 (gnus-compress-sequence (sort (apply #'nconc copied) #'<))))
1629
1630(defun nnimap-new-articles (flags)
1631 (let (new)
1632 (dolist (elem flags)
1633 (when (or (null (cdr elem))
b069e5a6
G
1634 (and (not (memq '%Deleted (cdr elem)))
1635 (not (memq '%Seen (cdr elem)))))
20a673b2
KY
1636 (push (car elem) new)))
1637 (gnus-compress-sequence (nreverse new))))
1638
1639(defun nnimap-make-split-specs (list)
1640 (let ((specs nil)
1641 entry)
1642 (dolist (elem list)
1643 (destructuring-bind (article spec) elem
1644 (dolist (group (delete nil (mapcar #'car spec)))
1645 (unless (setq entry (assoc group specs))
1646 (push (setq entry (list group)) specs))
1647 (setcdr entry (cons article (cdr entry))))))
1648 (dolist (entry specs)
1649 (setcdr entry (gnus-compress-sequence (sort (cdr entry) #'<))))
1650 specs))
1651
1652(defun nnimap-transform-split-mail ()
1653 (goto-char (point-min))
1654 (let (article bytes)
1655 (block nil
1656 (while (not (eobp))
1657 (while (not (looking-at "^\\* [0-9]+ FETCH.*UID \\([0-9]+\\)"))
1658 (delete-region (point) (progn (forward-line 1) (point)))
1659 (when (eobp)
1660 (return)))
1661 (setq article (match-string 1)
1662 bytes (nnimap-get-length))
1663 (delete-region (line-beginning-position) (line-end-position))
1664 ;; Insert MMDF separator, and a way to remember what this
1665 ;; article UID is.
1666 (insert (format "\^A\^A\^A\^A\n\nX-nnimap-article: %s" article))
1667 (forward-char (1+ bytes))
1668 (setq bytes (nnimap-get-length))
1669 (delete-region (line-beginning-position) (line-end-position))
6b7df8d3
G
1670 ;; There's a body; skip past that.
1671 (when bytes
1672 (forward-char (1+ bytes))
1673 (delete-region (line-beginning-position) (line-end-position)))))))
20a673b2
KY
1674
1675(defun nnimap-dummy-active-number (group &optional server)
1676 1)
1677
1678(defun nnimap-save-mail-spec (group-art &optional server full-nov)
1679 (let (article)
1680 (goto-char (point-min))
1681 (if (not (re-search-forward "X-nnimap-article: \\([0-9]+\\)" nil t))
1682 (error "Invalid nnimap mail")
1683 (setq article (string-to-number (match-string 1))))
b069e5a6
G
1684 (push (list article
1685 (if (eq group-art 'junk)
1686 (list (cons 'junk 1))
1687 group-art))
20a673b2 1688 nnimap-incoming-split-list)))
c113de23 1689
c113de23
GM
1690(provide 'nnimap)
1691
1692;;; nnimap.el ends here