1 ;;; nntp.el --- nntp access for Gnus
2 ;; Copyright (C) 1987,88,89,90,92,93,94,95,96 Free Software Foundation, Inc.
4 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
5 ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
31 (eval-when-compile (require 'cl))
36 (unless (fboundp 'open-network-stream)
39 (eval-when-compile (require 'cl))
42 (autoload 'cancel-timer "timer")
43 (autoload 'telnet "telnet" nil t)
44 (autoload 'telnet-send-input "telnet" nil t)
45 (autoload 'timezone-parse-date "timezone"))
47 (defvoo nntp-server-hook nil
48 "*Hooks for the NNTP server.
49 If the kanji code of the NNTP server is different from the local kanji
50 code, the correct kanji code of the buffer associated with the NNTP
51 server must be specified as follows:
53 \(setq nntp-server-hook
56 ;; Server's Kanji code is EUC (NEmacs hack).
57 (make-local-variable 'kanji-fileio-code)
58 (setq kanji-fileio-code 0))))
60 If you'd like to change something depending on the server in this
61 hook, use the variable `nntp-address'.")
63 (defvoo nntp-server-opened-hook '(nntp-send-mode-reader)
64 "*Hook used for sending commands to the server at startup.
65 The default value is `nntp-send-mode-reader', which makes an innd
66 server spawn an nnrpd server. Another useful function to put in this
67 hook might be `nntp-send-authinfo', which will prompt for a password
68 to allow posting from the server. Note that this is only necessary to
69 do on servers that use strict access control.")
70 (add-hook 'nntp-server-opened-hook 'nntp-send-mode-reader)
72 (defvoo nntp-server-action-alist
73 '(("nntpd 1\\.5\\.11t"
74 (remove-hook 'nntp-server-opened-hook 'nntp-send-mode-reader)))
75 "Alist of regexps to match on server types and actions to be taken.
76 For instance, if you want Gnus to beep every time you connect
77 to innd, you could say something like:
79 \(setq nntp-server-action-alist
82 You probably don't want to do that, though.")
84 (defvoo nntp-open-server-function 'nntp-open-network-stream
85 "*Function used for connecting to a remote system.
86 It will be called with the address of the remote system.
88 Two pre-made functions are `nntp-open-network-stream', which is the
89 default, and simply connects to some port or other on the remote
90 system (see nntp-port-number). The other is `nntp-open-rlogin', which
91 does an rlogin on the remote system, and then does a telnet to the
92 NNTP server available there (see nntp-rlogin-parameters).")
94 (defvoo nntp-rlogin-parameters '("telnet" "${NNTPSERVER:=localhost}" "nntp")
95 "*Parameters to `nntp-open-login'.
96 That function may be used as `nntp-open-server-function'. In that
97 case, this list will be used as the parameter list given to rsh.")
99 (defvoo nntp-rlogin-user-name nil
100 "*User name on remote system when using the rlogin connect method.")
102 (defvoo nntp-address nil
103 "*The name of the NNTP server.")
105 (defvoo nntp-port-number "nntp"
106 "*Port number to connect to.")
108 (defvoo nntp-end-of-line "\r\n"
109 "String to use on the end of lines when talking to the NNTP server.
110 This is \"\\r\\n\" by default, but should be \"\\n\" when
111 using rlogin to communicate with the server.")
113 (defvoo nntp-large-newsgroup 50
114 "*The number of the articles which indicates a large newsgroup.
115 If the number of the articles is greater than the value, verbose
116 messages will be shown to indicate the current status.")
118 (defvoo nntp-buggy-select (memq system-type '(fujitsu-uts))
119 "*t if your select routine is buggy.
120 If the select routine signals error or fall into infinite loop while
121 waiting for the server response, the variable must be set to t. In
122 case of Fujitsu UTS, it is set to T since `accept-process-output'
123 doesn't work properly.")
125 (defvoo nntp-maximum-request 400
126 "*The maximum number of the requests sent to the NNTP server at one time.
127 If Emacs hangs up while retrieving headers, set the variable to a
130 (defvoo nntp-debug-read 10000
131 "*Display '...' every 10Kbytes of a message being received if it is non-nil.
132 If it is a number, dots are displayed per the number.")
134 (defvoo nntp-nov-is-evil nil
135 "*If non-nil, nntp will never attempt to use XOVER when talking to the server.")
137 (defvoo nntp-xover-commands '("XOVER" "XOVERVIEW")
138 "*List of strings that are used as commands to fetch NOV lines from a server.
139 The strings are tried in turn until a positive response is gotten. If
140 none of the commands are successful, nntp will just grab headers one
143 (defvoo nntp-nov-gap 20
144 "*Maximum allowed gap between two articles.
145 If the gap between two consecutive articles is bigger than this
146 variable, split the XOVER request into two requests.")
148 (defvoo nntp-connection-timeout nil
149 "*Number of seconds to wait before an nntp connection times out.
150 If this variable is nil, which is the default, no timers are set.")
152 (defvoo nntp-command-timeout nil
153 "*Number of seconds to wait for a response when sending a command.
154 If this variable is nil, which is the default, no timers are set.")
156 (defvoo nntp-retry-on-break nil
157 "*If non-nil, re-send the command when the user types `C-g'.")
159 (defvoo nntp-news-default-headers nil
160 "*If non-nil, override `mail-default-headers' when posting news.")
162 (defvoo nntp-prepare-server-hook nil
163 "*Hook run before a server is opened.
164 If can be used to set up a server remotely, for instance. Say you
165 have an account at the machine \"other.machine\". This machine has
166 access to an NNTP server that you can't access locally. You could
167 then use this hook to rsh to the remote machine and start a proxy NNTP
168 server there that you can connect to.")
170 (defvoo nntp-async-number 5
171 "*How many articles should be prefetched when in asynchronous mode.")
173 (defvoo nntp-warn-about-losing-connection t
174 "*If non-nil, beep when a server closes connection.")
178 (defconst nntp-version "nntp 4.0"
179 "Version numbers of this version of NNTP.")
181 (defvar nntp-server-buffer nil
182 "Buffer associated with the NNTP server process.")
184 (defvoo nntp-server-process nil
185 "The NNTP server process.
186 You'd better not use this variable in NNTP front-end program, but
187 instead use `nntp-server-buffer'.")
189 (defvoo nntp-status-string nil
190 "Save the server response message.")
192 (defvar nntp-opened-connections nil
193 "All (possibly) opened connections.")
195 (defvoo nntp-server-xover 'try)
196 (defvoo nntp-server-list-active-group 'try)
197 (defvoo nntp-current-group "")
198 (defvoo nntp-server-type nil)
200 (defvoo nntp-async-process nil)
201 (defvoo nntp-async-buffer nil)
202 (defvoo nntp-async-articles nil)
203 (defvoo nntp-async-fetched nil)
204 (defvoo nntp-async-group-alist nil)
207 ;;; Interface functions.
209 (nnoo-define-basics nntp)
211 (deffoo nntp-retrieve-headers (articles &optional group server fetch-old)
212 "Retrieve the headers of ARTICLES."
213 (nntp-possibly-change-server group server)
215 (set-buffer nntp-server-buffer)
217 (if (and (not gnus-nov-is-evil)
218 (not nntp-nov-is-evil)
219 (nntp-retrieve-headers-with-xover articles fetch-old))
220 ;; We successfully retrieved the headers via XOVER.
222 ;; XOVER didn't work, so we do it the hard, slow and inefficient
224 (let ((number (length articles))
227 (message-log-max nil)
228 (last-point (point-min)))
229 ;; Send HEAD command.
231 (nntp-send-strings-to-server
232 "HEAD" (if (numberp (car articles))
233 (int-to-string (car articles))
234 ;; `articles' is either a list of article numbers
235 ;; or a list of article IDs.
237 (setq articles (cdr articles)
239 ;; Every 400 header requests we have to read the stream in
240 ;; order to avoid deadlocks.
241 (when (or (null articles) ;All requests have been sent.
242 (zerop (% count nntp-maximum-request)))
243 (nntp-accept-response)
245 (goto-char last-point)
247 (while (re-search-forward "^[0-9]" nil t)
248 (setq received (1+ received)))
249 (setq last-point (point))
251 ;; If number of headers is greater than 100, give
252 ;; informative messages.
253 (and (numberp nntp-large-newsgroup)
254 (> number nntp-large-newsgroup)
255 (zerop (% received 20))
256 (nnheader-message 7 "NNTP: Receiving headers... %d%%"
257 (/ (* received 100) number)))
258 (nntp-accept-response))))
259 ;; Wait for text of last command.
260 (goto-char (point-max))
261 (re-search-backward "^[0-9]" nil t)
262 (when (looking-at "^[23]")
264 (goto-char (- (point-max) 3))
265 (not (looking-at "^\\.\r?\n")))
266 (nntp-accept-response)))
267 (and (numberp nntp-large-newsgroup)
268 (> number nntp-large-newsgroup)
269 (nnheader-message 7 "NNTP: Receiving headers...done"))
271 ;; Now all of replies are received. Fold continuation lines.
272 (nnheader-fold-continuation-lines)
273 ;; Remove all "\r"'s.
274 (goto-char (point-min))
275 (while (search-forward "\r" nil t)
276 (replace-match "" t t))
280 (deffoo nntp-retrieve-groups (groups &optional server)
281 "Retrieve group info on GROUPS."
282 (nntp-possibly-change-server nil server)
284 (set-buffer nntp-server-buffer)
285 ;; The first time this is run, this variable is `try'. So we
287 (when (eq nntp-server-list-active-group 'try)
288 (nntp-try-list-active (car groups)))
292 (last-point (point-min))
293 (command (if nntp-server-list-active-group "LIST ACTIVE" "GROUP")))
295 ;; Send the command to the server.
296 (nntp-send-strings-to-server command (car groups))
297 (setq groups (cdr groups))
298 (setq count (1+ count))
299 ;; Every 400 requests we have to read the stream in
300 ;; order to avoid deadlocks.
301 (when (or (null groups) ;All requests have been sent.
302 (zerop (% count nntp-maximum-request)))
303 (nntp-accept-response)
305 (goto-char last-point)
307 (while (re-search-forward "^[0-9]" nil t)
308 (setq received (1+ received)))
309 (setq last-point (point))
311 (nntp-accept-response))))
313 ;; Wait for the reply from the final command.
314 (when nntp-server-list-active-group
315 (goto-char (point-max))
316 (re-search-backward "^[0-9]" nil t)
317 (when (looking-at "^[23]")
319 (goto-char (- (point-max) 3))
320 (not (looking-at "^\\.\r?\n")))
321 (nntp-accept-response))))
323 ;; Now all replies are received. We remove CRs.
324 (goto-char (point-min))
325 (while (search-forward "\r" nil t)
326 (replace-match "" t t))
328 (if (not nntp-server-list-active-group)
330 ;; We have read active entries, so we just delete the
332 (goto-char (point-min))
333 (while (re-search-forward "^[.2-5]" nil t)
334 (delete-region (match-beginning 0)
335 (progn (forward-line 1) (point))))
338 (deffoo nntp-open-server (server &optional defs connectionless)
339 "Open the virtual server SERVER.
340 If CONNECTIONLESS is non-nil, don't attempt to connect to any physical
342 ;; Called with just a port number as the defs.
343 (when (or (stringp (car defs))
344 (numberp (car defs)))
345 (setq defs `((nntp-port-number ,(car defs)))))
346 (unless (assq 'nntp-address defs)
347 (setq defs (append defs `((nntp-address ,server)))))
348 (nnoo-change-server 'nntp server defs)
349 (if (nntp-server-opened server)
351 (or (nntp-server-opened server)
354 (run-hooks 'nntp-prepare-server-hook)
355 (nntp-open-server-semi-internal nntp-address nntp-port-number)
356 (nnheader-insert "")))))
358 (deffoo nntp-close-server (&optional server)
359 "Close connection to SERVER."
360 (nntp-possibly-change-server nil server t)
363 ;; Un-set default sentinel function before closing connection.
364 (and nntp-server-process
365 (eq 'nntp-default-sentinel
366 (process-sentinel nntp-server-process))
367 (set-process-sentinel nntp-server-process nil))
368 ;; We cannot send QUIT command unless the process is running.
369 (when (nntp-server-opened server)
370 (nntp-send-command nil "QUIT")
371 ;; Give the QUIT time to arrive.
373 (nntp-close-server-internal server)))
375 (deffoo nntp-request-close ()
376 "Close all server connections."
378 (while nntp-opened-connections
379 (when (setq proc (pop nntp-opened-connections))
380 ;; Un-set default sentinel function before closing connection.
381 (when (eq 'nntp-default-sentinel (process-sentinel proc))
382 (set-process-sentinel proc nil))
384 (process-send-string proc (concat "QUIT" nntp-end-of-line))
386 ;; Give the QUIT time to reach the server before we close
389 (delete-process proc)))
390 (and nntp-async-buffer
391 (buffer-name nntp-async-buffer)
392 (kill-buffer nntp-async-buffer))
393 (let ((alist (cddr (assq 'nntp nnoo-state-alist)))
395 (while (setq entry (pop alist))
396 (and (setq proc (cdr (assq 'nntp-async-buffer entry)))
398 (kill-buffer proc))))
399 (nnoo-close-server 'nntp)
400 (setq nntp-async-group-alist nil
401 nntp-async-articles nil)))
403 (deffoo nntp-server-opened (&optional server)
404 "Say whether a connection to SERVER has been opened."
405 (and (nnoo-current-server-p 'nntp server)
407 (buffer-name nntp-server-buffer)
409 (memq (process-status nntp-server-process) '(open run))))
411 (deffoo nntp-status-message (&optional server)
412 "Return server status as a string."
413 (if (and nntp-status-string
415 (string-match "[0-9][0-9][0-9][ \t]+\\([^\r]*\\).*$"
417 (substring nntp-status-string (match-beginning 1) (match-end 1))
418 ;; Empty message if nothing.
419 (or nntp-status-string "")))
421 (deffoo nntp-request-article (id &optional group server buffer)
422 "Request article ID (Message-ID or number)."
423 (nntp-possibly-change-server group server)
427 ;; First we see whether we can get the article from the async buffer.
428 (when (and (numberp id)
430 (memq id nntp-async-fetched))
432 (set-buffer nntp-async-buffer)
433 (let ((opoint (point))
434 (art (if (numberp id) (int-to-string id) id))
436 (when (and (or (re-search-forward (concat "^2.. +" art) nil t)
438 (goto-char (point-min))
439 (re-search-forward (concat "^2.. +" art) opoint t)))
443 end (re-search-forward "^\\.\r?\n" nil t))))
446 (set-buffer (or buffer nntp-server-buffer))
448 (insert-buffer-substring nntp-async-buffer beg end)
449 (let ((nntp-server-buffer (current-buffer)))
451 (delete-region beg end)
452 (when nntp-async-articles
453 (nntp-async-fetch-articles id))))))
457 ;; The article was not in the async buffer, so we fetch it now.
460 (if buffer (set-process-buffer nntp-server-process buffer))
461 (let ((nntp-server-buffer (or buffer nntp-server-buffer))
462 (art (or (and (numberp id) (int-to-string id)) id)))
464 (and (nntp-send-command
465 ;; A bit odd regexp to ensure working over rlogin.
466 "^\\.\r?\n" "ARTICLE" art)
468 (cons nntp-current-group id)
469 ;; We find out what the article number was.
470 (nntp-find-group-and-number)))
472 (and nntp-async-articles (nntp-async-fetch-articles id)))))
474 (set-process-buffer nntp-server-process nntp-server-buffer))))))
476 (deffoo nntp-request-body (id &optional group server)
477 "Request body of article ID (Message-ID or number)."
478 (nntp-possibly-change-server group server)
480 ;; If NEmacs, end of message may look like: "\256\215" (".^M")
482 "^\\.\r?\n" "BODY" (or (and (numberp id) (int-to-string id)) id))
485 (deffoo nntp-request-head (id &optional group server)
486 "Request head of article ID (Message-ID or number)."
487 (nntp-possibly-change-server group server)
489 (when (nntp-send-command
490 "^\\.\r?\n" "HEAD" (if (numberp id) (int-to-string id) id))
492 ;; We find out what the article number was.
493 (nntp-find-group-and-number)))
496 (set-buffer nntp-server-buffer)
497 (nnheader-fold-continuation-lines))))
499 (deffoo nntp-request-stat (id &optional group server)
500 "Request STAT of article ID (Message-ID or number)."
501 (nntp-possibly-change-server group server)
503 "^[23].*\r?\n" "STAT" (or (and (numberp id) (int-to-string id)) id)))
505 (deffoo nntp-request-type (group &optional article)
508 (deffoo nntp-request-group (group &optional server dont-check)
510 (nntp-possibly-change-server nil server)
511 (setq nntp-current-group
512 (when (nntp-send-command "^2.*\r?\n" "GROUP" group)
515 (deffoo nntp-request-asynchronous (group &optional server articles)
516 "Enable pre-fetch in GROUP."
517 (when nntp-async-articles
518 (nntp-async-request-group group))
519 (when nntp-async-number
520 (if (not (or (nntp-async-server-opened)
521 (nntp-async-open-server)))
522 ;; Couldn't open the second connection
524 (message "Can't open second connection to %s" nntp-address)
526 (setq nntp-async-articles nil)
528 ;; We opened the second connection (or it was opened already).
529 (setq nntp-async-articles articles)
530 (setq nntp-async-fetched nil)
531 ;; Clear any old data.
533 (set-buffer nntp-async-buffer)
535 ;; Select the correct current group on this server.
536 (nntp-async-send-strings "GROUP" group)
539 (deffoo nntp-list-active-group (group &optional server)
540 "Return the active info on GROUP (which can be a regexp."
541 (nntp-possibly-change-server group server)
542 (nntp-send-command "^.*\r?\n" "LIST ACTIVE" group))
544 (deffoo nntp-request-group-description (group &optional server)
545 "Get the description of GROUP."
546 (nntp-possibly-change-server nil server)
548 (nntp-send-command "^.*\r?\n" "XGTITLE" group)
551 (deffoo nntp-close-group (group &optional server)
553 (setq nntp-current-group nil)
556 (deffoo nntp-request-list (&optional server)
557 "List all active groups."
558 (nntp-possibly-change-server nil server)
560 (nntp-send-command "^\\.\r?\n" "LIST")
563 (deffoo nntp-request-list-newsgroups (&optional server)
564 "Get descriptions on all groups on SERVER."
565 (nntp-possibly-change-server nil server)
567 (nntp-send-command "^\\.\r?\n" "LIST NEWSGROUPS")
570 (deffoo nntp-request-newgroups (date &optional server)
571 "List groups that have arrived since DATE."
572 (nntp-possibly-change-server nil server)
573 (let* ((date (timezone-parse-date date))
575 (format "%s%02d%02d %s%s%s"
576 (substring (aref date 0) 2) (string-to-int (aref date 1))
577 (string-to-int (aref date 2)) (substring (aref date 3) 0 2)
579 (aref date 3) 3 5) (substring (aref date 3) 6 8))))
581 (nntp-send-command "^\\.\r?\n" "NEWGROUPS" time-string)
582 (nntp-decode-text))))
584 (deffoo nntp-request-list-distributions (&optional server)
585 "List distributions."
586 (nntp-possibly-change-server nil server)
588 (nntp-send-command "^\\.\r?\n" "LIST DISTRIBUTIONS")
591 (deffoo nntp-request-last (&optional group server)
592 "Decrease the current article pointer."
593 (nntp-possibly-change-server group server)
594 (nntp-send-command "^[23].*\r?\n" "LAST"))
596 (deffoo nntp-request-next (&optional group server)
597 "Advance the current article pointer."
598 (nntp-possibly-change-server group server)
599 (nntp-send-command "^[23].*\r?\n" "NEXT"))
601 (deffoo nntp-request-post (&optional server)
602 "Post the current buffer."
603 (nntp-possibly-change-server nil server)
604 (when (nntp-send-command "^[23].*\r?\n" "POST")
607 (nntp-send-region-to-server (point-min) (point-max))
608 ;; 1.2a NNTP's post command is buggy. "^M" (\r) is not
609 ;; appended to end of the status message.
610 (nntp-wait-for-response "^[23].*\n")))
612 ;;; Internal functions.
614 (defun nntp-send-mode-reader ()
615 "Send the MODE READER command to the nntp server.
616 This function is supposed to be called from `nntp-server-opened-hook'.
617 It will make innd servers spawn an nnrpd process to allow actual article
619 (nntp-send-command "^.*\r?\n" "MODE READER"))
621 (defun nntp-send-nosy-authinfo ()
622 "Send the AUTHINFO to the nntp server.
623 This function is supposed to be called from `nntp-server-opened-hook'.
624 It will prompt for a password."
625 (nntp-send-command "^.*\r?\n" "AUTHINFO USER"
626 (read-string "NNTP user name: "))
627 (nntp-send-command "^.*\r?\n" "AUTHINFO PASS"
628 (read-string "NNTP password: ")))
630 (defun nntp-send-authinfo ()
631 "Send the AUTHINFO to the nntp server.
632 This function is supposed to be called from `nntp-server-opened-hook'.
633 It will prompt for a password."
634 (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name))
635 (nntp-send-command "^.*\r?\n" "AUTHINFO PASS"
636 (read-string "NNTP password: ")))
638 (defun nntp-send-authinfo-from-file ()
639 "Send the AUTHINFO to the nntp server.
640 This function is supposed to be called from `nntp-server-opened-hook'.
641 It will prompt for a password."
642 (when (file-exists-p "~/.nntp-authinfo")
644 (set-buffer (get-buffer-create " *authinfo*"))
645 (buffer-disable-undo (current-buffer))
647 (insert-file-contents "~/.nntp-authinfo")
648 (goto-char (point-min))
649 (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name))
651 "^.*\r?\n" "AUTHINFO PASS"
652 (buffer-substring (point) (progn (end-of-line) (point))))
653 (kill-buffer (current-buffer)))))
655 (defun nntp-default-sentinel (proc status)
656 "Default sentinel function for NNTP server process."
657 (let ((servers (cddr (assq 'nntp nnoo-state-alist)))
659 ;; Go through the alist of server names and find the name of the
660 ;; server that the process that sent the signal is connected to.
661 ;; If you get my drift.
662 (if (equal proc nntp-server-process)
663 (setq server nntp-address)
665 (not (equal proc (cdr (assq 'nntp-server-process
667 (setq servers (cdr servers)))
668 (setq server (caar servers)))
670 nntp-warn-about-losing-connection)
671 (nnheader-message 3 "nntp: Connection closed to server %s" server)
672 (setq nntp-current-group "")
675 (defun nntp-kill-connection (server)
676 "Choke the connection to SERVER."
677 (let ((proc (cdr (assq 'nntp-server-process
679 (assq 'nntp nnoo-state-alist)))))))
681 (delete-process (process-name proc)))
682 (nntp-close-server server)
684 'nntp (message "Connection timed out to server %s" server))
688 ;; Encoding and decoding of NNTP text.
690 (defun nntp-decode-text ()
691 "Decode text transmitted by NNTP.
692 0. Delete status line.
693 1. Delete `^M' at end of line.
694 2. Delete `.' at end of buffer (end of text mark).
695 3. Delete `.' at beginning of line."
697 (set-buffer nntp-server-buffer)
698 ;; Insert newline at end of buffer.
699 (goto-char (point-max))
700 (or (bolp) (insert "\n"))
701 ;; Delete status line.
702 (delete-region (goto-char (point-min)) (progn (forward-line 1) (point)))
704 (while (search-forward "\r" nil t)
705 (replace-match "" t t))
706 ;; Delete `.' at end of the buffer (end of text mark).
707 (goto-char (point-max))
709 (when (looking-at "^\\.\n")
710 (delete-region (point) (progn (forward-line 1) (point))))
711 ;; Replace `..' at beginning of line with `.'.
712 (goto-char (point-min))
713 ;; (replace-regexp "^\\.\\." ".")
714 (while (search-forward "\n.." nil t)
717 (defun nntp-encode-text ()
718 "Encode text in current buffer for NNTP transmission.
719 1. Insert `.' at beginning of line.
720 2. Insert `.' at end of buffer (end of text mark)."
722 ;; Replace `.' at beginning of line with `..'.
723 (goto-char (point-min))
724 (while (search-forward "\n." nil t)
726 (goto-char (point-max))
727 ;; Insert newline at end of buffer.
728 (or (bolp) (insert "\n"))
729 ;; Insert `.' at end of buffer (end of text mark).
730 (insert "." nntp-end-of-line)))
734 ;;; Synchronous Communication with NNTP servers.
737 (defvar nntp-retry-command)
739 (defun nntp-send-command (response cmd &rest args)
740 "Wait for server RESPONSE after sending CMD and optional ARGS to server."
742 (and nntp-command-timeout
743 (nnheader-run-at-time
744 nntp-command-timeout nil 'nntp-kill-command
745 (nnoo-current-server 'nntp))))
746 (nntp-retry-command t)
750 (while nntp-retry-command
751 (setq nntp-retry-command nil)
752 ;; Clear communication buffer.
753 (set-buffer nntp-server-buffer)
756 (if nntp-retry-on-break
759 (apply 'nntp-send-strings-to-server cmd args)
762 (nntp-wait-for-response response)
764 (quit (setq nntp-retry-command t)))
765 (apply 'nntp-send-strings-to-server cmd args)
768 (nntp-wait-for-response response)
772 (nnheader-cancel-timer timer)))))
774 (defun nntp-kill-command (server)
775 "Kill and restart the connection to SERVER."
776 (let ((proc (cdr (assq
778 (assoc server (cddr (assq 'nntp nnoo-state-alist)))))))
780 (delete-process (process-name proc)))
781 (nntp-close-server server)
782 (nntp-open-server server)
783 (when nntp-current-group
784 (nntp-request-group nntp-current-group))
785 (setq nntp-retry-command t)))
787 (defun nntp-send-command-old (response cmd &rest args)
788 "Wait for server RESPONSE after sending CMD and optional ARGS to server."
790 ;; Clear communication buffer.
791 (set-buffer nntp-server-buffer)
793 (apply 'nntp-send-strings-to-server cmd args)
795 (nntp-wait-for-response response)
798 (defun nntp-wait-for-response (regexp &optional slow)
799 "Wait for server response which matches REGEXP."
803 (dotnum 0) ;Number of "." being displayed.
804 (dotsize ;How often "." displayed.