Commit | Line | Data |
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41487370 | 1 | ;;; nntp.el --- nntp access for Gnus |
cb4c9483 | 2 | ;; Copyright (C) 1987,88,89,90,92,93,94,95,96 Free Software Foundation, Inc. |
3a801d0c | 3 | |
c2c2f720 | 4 | ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> |
41487370 | 5 | ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no> |
d7b4d18f | 6 | ;; Keywords: news |
c2c2f720 | 7 | |
05328297 | 8 | ;; This file is part of GNU Emacs. |
9 | ||
4da31937 RS |
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) | |
13 | ;; any later version. | |
14 | ||
05328297 | 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
4da31937 RS |
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. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
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. | |
4da31937 | 24 | |
c2c2f720 ER |
25 | ;;; Commentary: |
26 | ||
c2c2f720 ER |
27 | ;;; Code: |
28 | ||
41487370 | 29 | (require 'nnheader) |
231f989b LMI |
30 | (require 'nnoo) |
31 | (eval-when-compile (require 'cl)) | |
32 | ||
33 | (nnoo-declare nntp) | |
34 | ||
35 | (eval-and-compile | |
36 | (unless (fboundp 'open-network-stream) | |
37 | (require 'tcp))) | |
41487370 LMI |
38 | |
39 | (eval-when-compile (require 'cl)) | |
40 | ||
41 | (eval-and-compile | |
41487370 LMI |
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")) | |
46 | ||
231f989b | 47 | (defvoo nntp-server-hook nil |
05328297 | 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: | |
52 | ||
a4e104bf | 53 | \(setq nntp-server-hook |
b027f415 RS |
54 | (function |
55 | (lambda () | |
05328297 | 56 | ;; Server's Kanji code is EUC (NEmacs hack). |
57 | (make-local-variable 'kanji-fileio-code) | |
b027f415 | 58 | (setq kanji-fileio-code 0)))) |
05328297 | 59 | |
60 | If you'd like to change something depending on the server in this | |
41487370 LMI |
61 | hook, use the variable `nntp-address'.") |
62 | ||
231f989b | 63 | (defvoo nntp-server-opened-hook '(nntp-send-mode-reader) |
41487370 LMI |
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) | |
71 | ||
231f989b LMI |
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: | |
78 | ||
79 | \(setq nntp-server-action-alist | |
80 | '((\"innd\" (ding)))) | |
81 | ||
82 | You probably don't want to do that, though.") | |
83 | ||
84 | (defvoo nntp-open-server-function 'nntp-open-network-stream | |
41487370 LMI |
85 | "*Function used for connecting to a remote system. |
86 | It will be called with the address of the remote system. | |
87 | ||
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).") | |
93 | ||
231f989b | 94 | (defvoo nntp-rlogin-parameters '("telnet" "${NNTPSERVER:=localhost}" "nntp") |
41487370 LMI |
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.") | |
98 | ||
231f989b | 99 | (defvoo nntp-rlogin-user-name nil |
41487370 LMI |
100 | "*User name on remote system when using the rlogin connect method.") |
101 | ||
231f989b | 102 | (defvoo nntp-address nil |
41487370 LMI |
103 | "*The name of the NNTP server.") |
104 | ||
231f989b | 105 | (defvoo nntp-port-number "nntp" |
41487370 | 106 | "*Port number to connect to.") |
05328297 | 107 | |
231f989b LMI |
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.") | |
112 | ||
113 | (defvoo nntp-large-newsgroup 50 | |
b027f415 RS |
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.") | |
117 | ||
231f989b | 118 | (defvoo nntp-buggy-select (memq system-type '(fujitsu-uts)) |
41487370 | 119 | "*t if your select routine is buggy. |
05328297 | 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 | |
41487370 | 122 | case of Fujitsu UTS, it is set to T since `accept-process-output' |
05328297 | 123 | doesn't work properly.") |
124 | ||
231f989b | 125 | (defvoo nntp-maximum-request 400 |
05328297 | 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 | |
128 | lower value.") | |
129 | ||
231f989b | 130 | (defvoo nntp-debug-read 10000 |
b027f415 RS |
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.") | |
05328297 | 133 | |
231f989b | 134 | (defvoo nntp-nov-is-evil nil |
41487370 LMI |
135 | "*If non-nil, nntp will never attempt to use XOVER when talking to the server.") |
136 | ||
231f989b | 137 | (defvoo nntp-xover-commands '("XOVER" "XOVERVIEW") |
41487370 LMI |
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 | |
141 | by one.") | |
142 | ||
231f989b | 143 | (defvoo nntp-nov-gap 20 |
41487370 LMI |
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.") | |
147 | ||
231f989b | 148 | (defvoo nntp-connection-timeout nil |
41487370 LMI |
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.") | |
151 | ||
231f989b LMI |
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.") | |
155 | ||
156 | (defvoo nntp-retry-on-break nil | |
157 | "*If non-nil, re-send the command when the user types `C-g'.") | |
158 | ||
159 | (defvoo nntp-news-default-headers nil | |
41487370 LMI |
160 | "*If non-nil, override `mail-default-headers' when posting news.") |
161 | ||
231f989b | 162 | (defvoo nntp-prepare-server-hook nil |
41487370 LMI |
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.") | |
169 | ||
231f989b | 170 | (defvoo nntp-async-number 5 |
41487370 LMI |
171 | "*How many articles should be prefetched when in asynchronous mode.") |
172 | ||
231f989b LMI |
173 | (defvoo nntp-warn-about-losing-connection t |
174 | "*If non-nil, beep when a server closes connection.") | |
41487370 | 175 | |
05328297 | 176 | \f |
05328297 | 177 | |
41487370 LMI |
178 | (defconst nntp-version "nntp 4.0" |
179 | "Version numbers of this version of NNTP.") | |
05328297 | 180 | |
181 | (defvar nntp-server-buffer nil | |
41487370 | 182 | "Buffer associated with the NNTP server process.") |
05328297 | 183 | |
231f989b | 184 | (defvoo nntp-server-process nil |
05328297 | 185 | "The NNTP server process. |
41487370 | 186 | You'd better not use this variable in NNTP front-end program, but |
05328297 | 187 | instead use `nntp-server-buffer'.") |
188 | ||
231f989b LMI |
189 | (defvoo nntp-status-string nil |
190 | "Save the server response message.") | |
05328297 | 191 | |
41487370 LMI |
192 | (defvar nntp-opened-connections nil |
193 | "All (possibly) opened connections.") | |
194 | ||
231f989b LMI |
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) | |
41487370 | 199 | |
231f989b LMI |
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) | |
41487370 LMI |
205 | |
206 | \f | |
207 | ;;; Interface functions. | |
208 | ||
231f989b LMI |
209 | (nnoo-define-basics nntp) |
210 | ||
211 | (deffoo nntp-retrieve-headers (articles &optional group server fetch-old) | |
212 | "Retrieve the headers of ARTICLES." | |
213 | (nntp-possibly-change-server group server) | |
05328297 | 214 | (save-excursion |
215 | (set-buffer nntp-server-buffer) | |
216 | (erase-buffer) | |
41487370 LMI |
217 | (if (and (not gnus-nov-is-evil) |
218 | (not nntp-nov-is-evil) | |
231f989b LMI |
219 | (nntp-retrieve-headers-with-xover articles fetch-old)) |
220 | ;; We successfully retrieved the headers via XOVER. | |
41487370 | 221 | 'nov |
231f989b LMI |
222 | ;; XOVER didn't work, so we do it the hard, slow and inefficient |
223 | ;; way. | |
224 | (let ((number (length articles)) | |
41487370 LMI |
225 | (count 0) |
226 | (received 0) | |
231f989b | 227 | (message-log-max nil) |
41487370 LMI |
228 | (last-point (point-min))) |
229 | ;; Send HEAD command. | |
231f989b | 230 | (while articles |
41487370 | 231 | (nntp-send-strings-to-server |
231f989b LMI |
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. | |
236 | (car articles))) | |
237 | (setq articles (cdr articles) | |
41487370 | 238 | count (1+ count)) |
231f989b LMI |
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) | |
244 | (while (progn | |
245 | (goto-char last-point) | |
246 | ;; Count replies. | |
247 | (while (re-search-forward "^[0-9]" nil t) | |
248 | (setq received (1+ received))) | |
249 | (setq last-point (point)) | |
250 | (< received count)) | |
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)))) | |
41487370 LMI |
259 | ;; Wait for text of last command. |
260 | (goto-char (point-max)) | |
261 | (re-search-backward "^[0-9]" nil t) | |
231f989b LMI |
262 | (when (looking-at "^[23]") |
263 | (while (progn | |
264 | (goto-char (- (point-max) 3)) | |
265 | (not (looking-at "^\\.\r?\n"))) | |
266 | (nntp-accept-response))) | |
41487370 LMI |
267 | (and (numberp nntp-large-newsgroup) |
268 | (> number nntp-large-newsgroup) | |
231f989b | 269 | (nnheader-message 7 "NNTP: Receiving headers...done")) |
41487370 | 270 | |
231f989b LMI |
271 | ;; Now all of replies are received. Fold continuation lines. |
272 | (nnheader-fold-continuation-lines) | |
273 | ;; Remove all "\r"'s. | |
41487370 LMI |
274 | (goto-char (point-min)) |
275 | (while (search-forward "\r" nil t) | |
231f989b | 276 | (replace-match "" t t)) |
41487370 LMI |
277 | 'headers)))) |
278 | ||
279 | ||
231f989b LMI |
280 | (deffoo nntp-retrieve-groups (groups &optional server) |
281 | "Retrieve group info on GROUPS." | |
41487370 LMI |
282 | (nntp-possibly-change-server nil server) |
283 | (save-excursion | |
284 | (set-buffer nntp-server-buffer) | |
231f989b LMI |
285 | ;; The first time this is run, this variable is `try'. So we |
286 | ;; try. | |
287 | (when (eq nntp-server-list-active-group 'try) | |
288 | (nntp-try-list-active (car groups))) | |
41487370 LMI |
289 | (erase-buffer) |
290 | (let ((count 0) | |
05328297 | 291 | (received 0) |
41487370 | 292 | (last-point (point-min)) |
231f989b | 293 | (command (if nntp-server-list-active-group "LIST ACTIVE" "GROUP"))) |
41487370 | 294 | (while groups |
231f989b | 295 | ;; Send the command to the server. |
41487370 LMI |
296 | (nntp-send-strings-to-server command (car groups)) |
297 | (setq groups (cdr groups)) | |
05328297 | 298 | (setq count (1+ count)) |
41487370 LMI |
299 | ;; Every 400 requests we have to read the stream in |
300 | ;; order to avoid deadlocks. | |
231f989b LMI |
301 | (when (or (null groups) ;All requests have been sent. |
302 | (zerop (% count nntp-maximum-request))) | |
303 | (nntp-accept-response) | |
304 | (while (progn | |
305 | (goto-char last-point) | |
306 | ;; Count replies. | |
307 | (while (re-search-forward "^[0-9]" nil t) | |
308 | (setq received (1+ received))) | |
309 | (setq last-point (point)) | |
310 | (< received count)) | |
311 | (nntp-accept-response)))) | |
41487370 LMI |
312 | |
313 | ;; Wait for the reply from the final command. | |
231f989b LMI |
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]") | |
318 | (while (progn | |
319 | (goto-char (- (point-max) 3)) | |
320 | (not (looking-at "^\\.\r?\n"))) | |
321 | (nntp-accept-response)))) | |
41487370 LMI |
322 | |
323 | ;; Now all replies are received. We remove CRs. | |
05328297 | 324 | (goto-char (point-min)) |
41487370 LMI |
325 | (while (search-forward "\r" nil t) |
326 | (replace-match "" t t)) | |
05328297 | 327 | |
231f989b LMI |
328 | (if (not nntp-server-list-active-group) |
329 | 'group | |
330 | ;; We have read active entries, so we just delete the | |
331 | ;; superfluos gunk. | |
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)))) | |
336 | 'active)))) | |
41487370 | 337 | |
231f989b | 338 | (deffoo nntp-open-server (server &optional defs connectionless) |
b2b9d575 RS |
339 | "Open the virtual server SERVER. |
340 | If CONNECTIONLESS is non-nil, don't attempt to connect to any physical | |
341 | servers." | |
231f989b LMI |
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) | |
41487370 LMI |
349 | (if (nntp-server-opened server) |
350 | t | |
231f989b LMI |
351 | (or (nntp-server-opened server) |
352 | connectionless | |
353 | (prog2 | |
354 | (run-hooks 'nntp-prepare-server-hook) | |
355 | (nntp-open-server-semi-internal nntp-address nntp-port-number) | |
356 | (nnheader-insert ""))))) | |
357 | ||
358 | (deffoo nntp-close-server (&optional server) | |
41487370 | 359 | "Close connection to SERVER." |
b2b9d575 | 360 | (nntp-possibly-change-server nil server t) |
05328297 | 361 | (unwind-protect |
362 | (progn | |
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. | |
231f989b LMI |
369 | (when (nntp-server-opened server) |
370 | (nntp-send-command nil "QUIT") | |
371 | ;; Give the QUIT time to arrive. | |
372 | (sleep-for 1))) | |
373 | (nntp-close-server-internal server))) | |
41487370 | 374 | |
231f989b | 375 | (deffoo nntp-request-close () |
41487370 LMI |
376 | "Close all server connections." |
377 | (let (proc) | |
378 | (while nntp-opened-connections | |
231f989b LMI |
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)) | |
383 | (condition-case () | |
384 | (process-send-string proc (concat "QUIT" nntp-end-of-line)) | |
385 | (error nil)) | |
386 | ;; Give the QUIT time to reach the server before we close | |
387 | ;; down the process. | |
388 | (sleep-for 1) | |
389 | (delete-process proc))) | |
41487370 | 390 | (and nntp-async-buffer |
231f989b | 391 | (buffer-name nntp-async-buffer) |
41487370 | 392 | (kill-buffer nntp-async-buffer)) |
231f989b LMI |
393 | (let ((alist (cddr (assq 'nntp nnoo-state-alist))) |
394 | entry) | |
395 | (while (setq entry (pop alist)) | |
396 | (and (setq proc (cdr (assq 'nntp-async-buffer entry))) | |
397 | (buffer-name proc) | |
398 | (kill-buffer proc)))) | |
399 | (nnoo-close-server 'nntp) | |
400 | (setq nntp-async-group-alist nil | |
401 | nntp-async-articles nil))) | |
402 | ||
403 | (deffoo nntp-server-opened (&optional server) | |
41487370 | 404 | "Say whether a connection to SERVER has been opened." |
231f989b | 405 | (and (nnoo-current-server-p 'nntp server) |
41487370 LMI |
406 | nntp-server-buffer |
407 | (buffer-name nntp-server-buffer) | |
408 | nntp-server-process | |
05328297 | 409 | (memq (process-status nntp-server-process) '(open run)))) |
410 | ||
231f989b | 411 | (deffoo nntp-status-message (&optional server) |
41487370 | 412 | "Return server status as a string." |
b027f415 | 413 | (if (and nntp-status-string |
05328297 | 414 | ;; NNN MESSAGE |
415 | (string-match "[0-9][0-9][0-9][ \t]+\\([^\r]*\\).*$" | |
b027f415 RS |
416 | nntp-status-string)) |
417 | (substring nntp-status-string (match-beginning 1) (match-end 1)) | |
05328297 | 418 | ;; Empty message if nothing. |
41487370 LMI |
419 | (or nntp-status-string ""))) |
420 | ||
231f989b LMI |
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) | |
41487370 LMI |
424 | |
425 | (let (found) | |
426 | ||
427 | ;; First we see whether we can get the article from the async buffer. | |
231f989b LMI |
428 | (when (and (numberp id) |
429 | nntp-async-articles | |
430 | (memq id nntp-async-fetched)) | |
431 | (save-excursion | |
432 | (set-buffer nntp-async-buffer) | |
433 | (let ((opoint (point)) | |
434 | (art (if (numberp id) (int-to-string id) id)) | |
435 | beg end) | |
436 | (when (and (or (re-search-forward (concat "^2.. +" art) nil t) | |
41487370 LMI |
437 | (progn |
438 | (goto-char (point-min)) | |
439 | (re-search-forward (concat "^2.. +" art) opoint t))) | |
440 | (progn | |
441 | (beginning-of-line) | |
442 | (setq beg (point) | |
443 | end (re-search-forward "^\\.\r?\n" nil t)))) | |
231f989b LMI |
444 | (setq found t) |
445 | (save-excursion | |
446 | (set-buffer (or buffer nntp-server-buffer)) | |
447 | (erase-buffer) | |
448 | (insert-buffer-substring nntp-async-buffer beg end) | |
449 | (let ((nntp-server-buffer (current-buffer))) | |
450 | (nntp-decode-text))) | |
451 | (delete-region beg end) | |
452 | (when nntp-async-articles | |
453 | (nntp-async-fetch-articles id)))))) | |
41487370 LMI |
454 | |
455 | (if found | |
231f989b | 456 | id |
41487370 LMI |
457 | ;; The article was not in the async buffer, so we fetch it now. |
458 | (unwind-protect | |
459 | (progn | |
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))) | |
41487370 | 463 | (prog1 |
231f989b LMI |
464 | (and (nntp-send-command |
465 | ;; A bit odd regexp to ensure working over rlogin. | |
466 | "^\\.\r?\n" "ARTICLE" art) | |
467 | (if (numberp id) | |
468 | (cons nntp-current-group id) | |
469 | ;; We find out what the article number was. | |
470 | (nntp-find-group-and-number))) | |
41487370 LMI |
471 | (nntp-decode-text) |
472 | (and nntp-async-articles (nntp-async-fetch-articles id))))) | |
231f989b LMI |
473 | (when buffer |
474 | (set-process-buffer nntp-server-process nntp-server-buffer)))))) | |
41487370 | 475 | |
231f989b LMI |
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) | |
05328297 | 479 | (prog1 |
480 | ;; If NEmacs, end of message may look like: "\256\215" (".^M") | |
41487370 LMI |
481 | (nntp-send-command |
482 | "^\\.\r?\n" "BODY" (or (and (numberp id) (int-to-string id)) id)) | |
483 | (nntp-decode-text))) | |
05328297 | 484 | |
231f989b LMI |
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) | |
05328297 | 488 | (prog1 |
231f989b LMI |
489 | (when (nntp-send-command |
490 | "^\\.\r?\n" "HEAD" (if (numberp id) (int-to-string id) id)) | |
491 | (if (numberp id) id | |
492 | ;; We find out what the article number was. | |
493 | (nntp-find-group-and-number))) | |
494 | (nntp-decode-text) | |
495 | (save-excursion | |
496 | (set-buffer nntp-server-buffer) | |
497 | (nnheader-fold-continuation-lines)))) | |
41487370 | 498 | |
231f989b LMI |
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) | |
41487370 LMI |
502 | (nntp-send-command |
503 | "^[23].*\r?\n" "STAT" (or (and (numberp id) (int-to-string id)) id))) | |
504 | ||
231f989b LMI |
505 | (deffoo nntp-request-type (group &optional article) |
506 | 'news) | |
507 | ||
508 | (deffoo nntp-request-group (group &optional server dont-check) | |
41487370 | 509 | "Select GROUP." |
231f989b LMI |
510 | (nntp-possibly-change-server nil server) |
511 | (setq nntp-current-group | |
512 | (when (nntp-send-command "^2.*\r?\n" "GROUP" group) | |
513 | group))) | |
514 | ||
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 | |
523 | (progn | |
524 | (message "Can't open second connection to %s" nntp-address) | |
525 | (ding) | |
526 | (setq nntp-async-articles nil) | |
527 | (sit-for 2)) | |
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. | |
532 | (save-excursion | |
533 | (set-buffer nntp-async-buffer) | |
534 | (erase-buffer)) | |
535 | ;; Select the correct current group on this server. | |
536 | (nntp-async-send-strings "GROUP" group) | |
537 | t))) | |
538 | ||
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) | |
41487370 LMI |
542 | (nntp-send-command "^.*\r?\n" "LIST ACTIVE" group)) |
543 | ||
231f989b LMI |
544 | (deffoo nntp-request-group-description (group &optional server) |
545 | "Get the description of GROUP." | |
b2b9d575 RS |
546 | (nntp-possibly-change-server nil server) |
547 | (prog1 | |
548 | (nntp-send-command "^.*\r?\n" "XGTITLE" group) | |
549 | (nntp-decode-text))) | |
41487370 | 550 | |
231f989b LMI |
551 | (deffoo nntp-close-group (group &optional server) |
552 | "Close GROUP." | |
41487370 LMI |
553 | (setq nntp-current-group nil) |
554 | t) | |
555 | ||
231f989b LMI |
556 | (deffoo nntp-request-list (&optional server) |
557 | "List all active groups." | |
41487370 | 558 | (nntp-possibly-change-server nil server) |
05328297 | 559 | (prog1 |
41487370 LMI |
560 | (nntp-send-command "^\\.\r?\n" "LIST") |
561 | (nntp-decode-text))) | |
05328297 | 562 | |
231f989b LMI |
563 | (deffoo nntp-request-list-newsgroups (&optional server) |
564 | "Get descriptions on all groups on SERVER." | |
41487370 | 565 | (nntp-possibly-change-server nil server) |
b027f415 | 566 | (prog1 |
41487370 LMI |
567 | (nntp-send-command "^\\.\r?\n" "LIST NEWSGROUPS") |
568 | (nntp-decode-text))) | |
569 | ||
231f989b LMI |
570 | (deffoo nntp-request-newgroups (date &optional server) |
571 | "List groups that have arrived since DATE." | |
41487370 LMI |
572 | (nntp-possibly-change-server nil server) |
573 | (let* ((date (timezone-parse-date date)) | |
574 | (time-string | |
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) | |
578 | (substring | |
579 | (aref date 3) 3 5) (substring (aref date 3) 6 8)))) | |
580 | (prog1 | |
581 | (nntp-send-command "^\\.\r?\n" "NEWGROUPS" time-string) | |
582 | (nntp-decode-text)))) | |
583 | ||
231f989b | 584 | (deffoo nntp-request-list-distributions (&optional server) |
41487370 LMI |
585 | "List distributions." |
586 | (nntp-possibly-change-server nil server) | |
b027f415 | 587 | (prog1 |
41487370 LMI |
588 | (nntp-send-command "^\\.\r?\n" "LIST DISTRIBUTIONS") |
589 | (nntp-decode-text))) | |
590 | ||
231f989b | 591 | (deffoo nntp-request-last (&optional group server) |
41487370 | 592 | "Decrease the current article pointer." |
231f989b | 593 | (nntp-possibly-change-server group server) |
41487370 LMI |
594 | (nntp-send-command "^[23].*\r?\n" "LAST")) |
595 | ||
231f989b | 596 | (deffoo nntp-request-next (&optional group server) |
41487370 | 597 | "Advance the current article pointer." |
231f989b | 598 | (nntp-possibly-change-server group server) |
41487370 LMI |
599 | (nntp-send-command "^[23].*\r?\n" "NEXT")) |
600 | ||
231f989b | 601 | (deffoo nntp-request-post (&optional server) |
41487370 LMI |
602 | "Post the current buffer." |
603 | (nntp-possibly-change-server nil server) | |
231f989b LMI |
604 | (when (nntp-send-command "^[23].*\r?\n" "POST") |
605 | (nnheader-insert "") | |
606 | (nntp-encode-text) | |
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"))) | |
41487370 LMI |
611 | |
612 | ;;; Internal functions. | |
613 | ||
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 | |
618 | reading." | |
619 | (nntp-send-command "^.*\r?\n" "MODE READER")) | |
620 | ||
231f989b LMI |
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: "))) | |
629 | ||
41487370 LMI |
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: "))) | |
637 | ||
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." | |
231f989b LMI |
642 | (when (file-exists-p "~/.nntp-authinfo") |
643 | (save-excursion | |
644 | (set-buffer (get-buffer-create " *authinfo*")) | |
645 | (buffer-disable-undo (current-buffer)) | |
646 | (erase-buffer) | |
647 | (insert-file-contents "~/.nntp-authinfo") | |
648 | (goto-char (point-min)) | |
649 | (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name)) | |
650 | (nntp-send-command | |
651 | "^.*\r?\n" "AUTHINFO PASS" | |
652 | (buffer-substring (point) (progn (end-of-line) (point)))) | |
653 | (kill-buffer (current-buffer))))) | |
05328297 | 654 | |
655 | (defun nntp-default-sentinel (proc status) | |
656 | "Default sentinel function for NNTP server process." | |
231f989b | 657 | (let ((servers (cddr (assq 'nntp nnoo-state-alist))) |
41487370 LMI |
658 | server) |
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) | |
664 | (while (and servers | |
231f989b LMI |
665 | (not (equal proc (cdr (assq 'nntp-server-process |
666 | (car servers)))))) | |
41487370 | 667 | (setq servers (cdr servers))) |
231f989b LMI |
668 | (setq server (caar servers))) |
669 | (when (and server | |
670 | nntp-warn-about-losing-connection) | |
671 | (nnheader-message 3 "nntp: Connection closed to server %s" server) | |
672 | (setq nntp-current-group "") | |
673 | (ding)))) | |
41487370 LMI |
674 | |
675 | (defun nntp-kill-connection (server) | |
231f989b LMI |
676 | "Choke the connection to SERVER." |
677 | (let ((proc (cdr (assq 'nntp-server-process | |
678 | (assoc server (cddr | |
679 | (assq 'nntp nnoo-state-alist))))))) | |
680 | (when proc | |
681 | (delete-process (process-name proc))) | |
41487370 | 682 | (nntp-close-server server) |
231f989b LMI |
683 | (nnheader-report |
684 | 'nntp (message "Connection timed out to server %s" server)) | |
41487370 LMI |
685 | (ding) |
686 | (sit-for 1))) | |
05328297 | 687 | |
688 | ;; Encoding and decoding of NNTP text. | |
689 | ||
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." | |
696 | (save-excursion | |
697 | (set-buffer nntp-server-buffer) | |
698 | ;; Insert newline at end of buffer. | |
699 | (goto-char (point-max)) | |
41487370 | 700 | (or (bolp) (insert "\n")) |
05328297 | 701 | ;; Delete status line. |
231f989b LMI |
702 | (delete-region (goto-char (point-min)) (progn (forward-line 1) (point))) |
703 | ;; Delete `^M's. | |
704 | (while (search-forward "\r" nil t) | |
705 | (replace-match "" t t)) | |
41487370 | 706 | ;; Delete `.' at end of the buffer (end of text mark). |
05328297 | 707 | (goto-char (point-max)) |
41487370 | 708 | (forward-line -1) |
231f989b LMI |
709 | (when (looking-at "^\\.\n") |
710 | (delete-region (point) (progn (forward-line 1) (point)))) | |
05328297 | 711 | ;; Replace `..' at beginning of line with `.'. |
712 | (goto-char (point-min)) | |
713 | ;; (replace-regexp "^\\.\\." ".") | |
714 | (while (search-forward "\n.." nil t) | |
41487370 | 715 | (delete-char -1)))) |
05328297 | 716 | |
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)." | |
721 | (save-excursion | |
05328297 | 722 | ;; Replace `.' at beginning of line with `..'. |
723 | (goto-char (point-min)) | |
05328297 | 724 | (while (search-forward "\n." nil t) |
725 | (insert ".")) | |
05328297 | 726 | (goto-char (point-max)) |
231f989b LMI |
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))) | |
05328297 | 731 | |
732 | \f | |
733 | ;;; | |
231f989b | 734 | ;;; Synchronous Communication with NNTP servers. |
05328297 | 735 | ;;; |
736 | ||
231f989b LMI |
737 | (defvar nntp-retry-command) |
738 | ||
05328297 | 739 | (defun nntp-send-command (response cmd &rest args) |
231f989b LMI |
740 | "Wait for server RESPONSE after sending CMD and optional ARGS to server." |
741 | (let ((timer | |
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) | |
747 | result) | |
748 | (unwind-protect | |
749 | (save-excursion | |
750 | (while nntp-retry-command | |
751 | (setq nntp-retry-command nil) | |
752 | ;; Clear communication buffer. | |
753 | (set-buffer nntp-server-buffer) | |
754 | (widen) | |
755 | (erase-buffer) | |
756 | (if nntp-retry-on-break | |
757 | (condition-case () | |
758 | (progn | |
759 | (apply 'nntp-send-strings-to-server cmd args) | |
760 | (setq result | |
761 | (if response | |
762 | (nntp-wait-for-response response) | |
763 | t))) | |
764 | (quit (setq nntp-retry-command t))) | |
765 | (apply 'nntp-send-strings-to-server cmd args) | |
766 | (setq result | |
767 | (if response | |
768 | (nntp-wait-for-response response) | |
769 | t)))) | |
770 | result) | |
771 | (when timer | |
772 | (nnheader-cancel-timer timer))))) | |
773 | ||
774 | (defun nntp-kill-command (server) | |
775 | "Kill and restart the connection to SERVER." | |
776 | (let ((proc (cdr (assq | |
777 | 'nntp-server-process | |
778 | (assoc server (cddr (assq 'nntp nnoo-state-alist))))))) | |
779 | (when proc | |
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))) | |
786 | ||
787 | (defun nntp-send-command-old (response cmd &rest args) | |
05328297 | 788 | "Wait for server RESPONSE after sending CMD and optional ARGS to server." |
789 | (save-excursion | |
790 | ;; Clear communication buffer. | |
791 | (set-buffer nntp-server-buffer) | |
792 | (erase-buffer) | |
793 | (apply 'nntp-send-strings-to-server cmd args) | |
794 | (if response | |
795 | (nntp-wait-for-response response) | |
41487370 | 796 | t))) |
05328297 | 797 | |
41487370 | 798 | (defun nntp-wait-for-response (regexp &optional slow) |
05328297 | 799 | "Wait for server response which matches REGEXP." |
800 | (save-excursion | |
801 | (let ((status t) | |
b027f415 RS |
802 | (wait t) |
803 | (dotnum 0) ;Number of "." being displayed. | |
804 | (dotsize ;How often "." displayed. | |
805 | (if (numberp nntp-debug-read) nntp-debug-read 10000))) | |
05328297 | 806 | (set-buffer nntp-server-buffer) |
807 | ;; Wait for status response (RFC977). | |
808 | ;; 1xx - Informative message. | |
809 | ;; 2xx - Command ok. | |
810 | ;; 3xx - Command ok so far, send the rest of it. | |
811 | ;; 4xx - Command was correct, but couldn't be performed for some | |
812 | ;; reason. | |
813 | ;; 5xx - Command unimplemented, or incorrect, or a serious | |
814 | ;; program error occurred. | |
815 | (nntp-accept-response) | |
816 | (while wait | |
817 | (goto-char (point-min)) | |
41487370 LMI |
818 | (if slow |
819 | (progn | |
820 | (cond ((re-search-forward "^[23][0-9][0-9]" nil t) | |
821 | (setq wait nil)) | |
822 | ((re-search-forward "^[45][0-9][0-9]" nil t) | |
823 | (setq status nil) | |
824 | (setq wait nil)) | |
825 | (t (nntp-accept-response))) | |
826 | (if (not wait) (delete-region (point-min) | |
827 | (progn (beginning-of-line) | |
828 | (point))))) | |
829 | (cond ((looking-at "[23]") | |
830 | (setq wait nil)) | |
831 | ((looking-at "[45]") | |
832 | (setq status nil) | |
833 | (setq wait nil)) | |
834 | (t (nntp-accept-response))))) | |
05328297 | 835 | ;; Save status message. |
836 | (end-of-line) | |
b027f415 | 837 | (setq nntp-status-string |
231f989b LMI |
838 | (nnheader-replace-chars-in-string |
839 | (buffer-substring (point-min) (point)) ?\r ? )) | |
840 | (when status | |
841 | (setq wait t) | |
842 | (while wait | |
843 | (goto-char (point-max)) | |
844 | (if (bolp) (forward-line -1) (beginning-of-line)) | |
845 | (if (looking-at regexp) | |
846 | (setq wait nil) | |
847 | (when nntp-debug-read | |
848 | (let ((newnum (/ (buffer-size) dotsize)) | |
849 | (message-log-max nil)) | |
850 | (unless (= dotnum newnum) | |
851 | (setq dotnum newnum) | |
852 | (nnheader-message 7 "NNTP: Reading %s" | |
853 | (make-string dotnum ?.))))) | |
854 | (nntp-accept-response))) | |
855 | ;; Remove "...". | |
856 | (when (and nntp-debug-read (> dotnum 0)) | |
857 | (message "")) | |
858 | ;; Successfully received server response. | |
859 | t)))) | |
05328297 | 860 | |
861 | \f | |
41487370 | 862 | |
05328297 | 863 | ;;; |
864 | ;;; Low-Level Interface to NNTP Server. | |
865 | ;;; | |
866 | ||
231f989b LMI |
867 | (defun nntp-find-group-and-number () |
868 | (save-excursion | |
869 | (save-restriction | |
870 | (set-buffer nntp-server-buffer) | |
871 | (narrow-to-region (goto-char (point-min)) | |
872 | (or (search-forward "\n\n" nil t) (point-max))) | |
873 | (goto-char (point-min)) | |
874 | ;; We first find the number by looking at the status line. | |
875 | (let ((number (and (looking-at "2[0-9][0-9] +\\([0-9]+\\) ") | |
876 | (string-to-int | |
877 | (buffer-substring (match-beginning 1) | |
878 | (match-end 1))))) | |
879 | group newsgroups xref) | |
880 | (and number (zerop number) (setq number nil)) | |
881 | ;; Then we find the group name. | |
882 | (setq group | |
883 | (cond | |
884 | ;; If there is only one group in the Newsgroups header, | |
885 | ;; then it seems quite likely that this article comes | |
886 | ;; from that group, I'd say. | |
887 | ((and (setq newsgroups (mail-fetch-field "newsgroups")) | |
888 | (not (string-match "," newsgroups))) | |
889 | newsgroups) | |
890 | ;; If there is more than one group in the Newsgroups | |
891 | ;; header, then the Xref header should be filled out. | |
892 | ;; We hazard a guess that the group that has this | |
893 | ;; article number in the Xref header is the one we are | |
894 | ;; looking for. This might very well be wrong if this | |
895 | ;; article happens to have the same number in several | |
896 | ;; groups, but that's life. | |
897 | ((and (setq xref (mail-fetch-field "xref")) | |
898 | number | |
899 | (string-match (format "\\([^ :]+\\):%d" number) xref)) | |
900 | (substring xref (match-beginning 1) (match-end 1))) | |
901 | (t ""))) | |
902 | (when (string-match "\r" group) | |
903 | (setq group (substring group 0 (match-beginning 0)))) | |
904 | (cons group number))))) | |
905 | ||
906 | (defun nntp-retrieve-headers-with-xover (articles &optional fetch-old) | |
41487370 LMI |
907 | (erase-buffer) |
908 | (cond | |
909 | ||
910 | ;; This server does not talk NOV. | |
911 | ((not nntp-server-xover) | |
912 | nil) | |
913 | ||
914 | ;; We don't care about gaps. | |
231f989b LMI |
915 | ((or (not nntp-nov-gap) |
916 | fetch-old) | |
41487370 | 917 | (nntp-send-xover-command |
231f989b LMI |
918 | (if fetch-old |
919 | (if (numberp fetch-old) | |
920 | (max 1 (- (car articles) fetch-old)) | |
921 | 1) | |
922 | (car articles)) | |
923 | (nntp-last-element articles) 'wait) | |
41487370 LMI |
924 | |
925 | (goto-char (point-min)) | |
231f989b LMI |
926 | (when (looking-at "[1-5][0-9][0-9] ") |
927 | (delete-region (point) (progn (forward-line 1) (point)))) | |
41487370 LMI |
928 | (while (search-forward "\r" nil t) |
929 | (replace-match "" t t)) | |
930 | (goto-char (point-max)) | |
931 | (forward-line -1) | |
231f989b LMI |
932 | (when (looking-at "\\.") |
933 | (delete-region (point) (progn (forward-line 1) (point))))) | |
41487370 LMI |
934 | |
935 | ;; We do it the hard way. For each gap, an XOVER command is sent | |
936 | ;; to the server. We do not wait for a reply from the server, we | |
937 | ;; just send them off as fast as we can. That means that we have | |
938 | ;; to count the number of responses we get back to find out when we | |
939 | ;; have gotten all we asked for. | |
940 | ((numberp nntp-nov-gap) | |
941 | (let ((count 0) | |
942 | (received 0) | |
943 | (last-point (point-min)) | |
944 | (buf (current-buffer)) | |
945 | first) | |
946 | ;; We have to check `nntp-server-xover'. If it gets set to nil, | |
947 | ;; that means that the server does not understand XOVER, but we | |
948 | ;; won't know that until we try. | |
231f989b LMI |
949 | (while (and nntp-server-xover articles) |
950 | (setq first (car articles)) | |
41487370 LMI |
951 | ;; Search forward until we find a gap, or until we run out of |
952 | ;; articles. | |
231f989b LMI |
953 | (while (and (cdr articles) |
954 | (< (- (nth 1 articles) (car articles)) nntp-nov-gap)) | |
955 | (setq articles (cdr articles))) | |
41487370 | 956 | |
231f989b LMI |
957 | (when (nntp-send-xover-command first (car articles)) |
958 | (setq articles (cdr articles) | |
41487370 LMI |
959 | count (1+ count)) |
960 | ||
961 | ;; Every 400 requests we have to read the stream in | |
962 | ;; order to avoid deadlocks. | |
231f989b LMI |
963 | (when (or (null articles) ;All requests have been sent. |
964 | (zerop (% count nntp-maximum-request))) | |
965 | (accept-process-output) | |
966 | ;; On some Emacs versions the preceding function has | |
967 | ;; a tendency to change the buffer. Perhaps. It's | |
968 | ;; quite difficult to reproduce, because it only | |
969 | ;; seems to happen once in a blue moon. | |
970 | (set-buffer buf) | |
971 | (while (progn | |
972 | (goto-char last-point) | |
973 | ;; Count replies. | |
974 | (while (re-search-forward "^[0-9][0-9][0-9] " nil t) | |
975 | (setq received (1+ received))) | |
976 | (setq last-point (point)) | |
977 | (< received count)) | |
978 | (accept-process-output) | |
979 | (set-buffer buf))))) | |
980 | ||
981 | (when nntp-server-xover | |
41487370 LMI |
982 | ;; Wait for the reply from the final command. |
983 | (goto-char (point-max)) | |
984 | (re-search-backward "^[0-9][0-9][0-9] " nil t) | |
231f989b LMI |
985 | (when (looking-at "^[23]") |
986 | (while (progn | |
987 | (goto-char (point-max)) | |
988 | (forward-line -1) | |
989 | (not (looking-at "^\\.\r?\n"))) | |
990 | (nntp-accept-response))) | |
41487370 LMI |
991 | |
992 | ;; We remove any "." lines and status lines. | |
993 | (goto-char (point-min)) | |
994 | (while (search-forward "\r" nil t) | |
995 | (delete-char -1)) | |
996 | (goto-char (point-min)) | |
997 | (delete-matching-lines "^\\.$\\|^[1-5][0-9][0-9] "))))) | |
998 | ||
999 | nntp-server-xover) | |
1000 | ||
1001 | (defun nntp-send-xover-command (beg end &optional wait-for-reply) | |
231f989b LMI |
1002 | "Send the XOVER command to the server." |
1003 | (let ((range (format "%d-%d" (or beg 1) (or end beg 1)))) | |
41487370 LMI |
1004 | (if (stringp nntp-server-xover) |
1005 | ;; If `nntp-server-xover' is a string, then we just send this | |
1006 | ;; command. | |
1007 | (if wait-for-reply | |
1008 | (nntp-send-command "^\\.\r?\n" nntp-server-xover range) | |
1009 | ;; We do not wait for the reply. | |
231f989b | 1010 | (nntp-send-strings-to-server nntp-server-xover range)) |
41487370 LMI |
1011 | (let ((commands nntp-xover-commands)) |
1012 | ;; `nntp-xover-commands' is a list of possible XOVER commands. | |
1013 | ;; We try them all until we get at positive response. | |
1014 | (while (and commands (eq nntp-server-xover 'try)) | |
1015 | (nntp-send-command "^\\.\r?\n" (car commands) range) | |
1016 | (save-excursion | |
1017 | (set-buffer nntp-server-buffer) | |
1018 | (goto-char (point-min)) | |
1019 | (and (looking-at "[23]") ; No error message. | |
1020 | ;; We also have to look at the lines. Some buggy | |
1021 | ;; servers give back simple lines with just the | |
1022 | ;; article number. How... helpful. | |
1023 | (progn | |
1024 | (forward-line 1) | |
1025 | (looking-at "[0-9]+\t...")) ; More text after number. | |
1026 | (setq nntp-server-xover (car commands)))) | |
1027 | (setq commands (cdr commands))) | |
1028 | ;; If none of the commands worked, we disable XOVER. | |
231f989b LMI |
1029 | (when (eq nntp-server-xover 'try) |
1030 | (save-excursion | |
1031 | (set-buffer nntp-server-buffer) | |
1032 | (erase-buffer) | |
1033 | (setq nntp-server-xover nil))) | |
41487370 LMI |
1034 | nntp-server-xover)))) |
1035 | ||
05328297 | 1036 | (defun nntp-send-strings-to-server (&rest strings) |
231f989b LMI |
1037 | "Send STRINGS to the server." |
1038 | (let ((cmd (concat (mapconcat 'identity strings " ") nntp-end-of-line))) | |
41487370 | 1039 | ;; We open the nntp server if it is down. |
231f989b LMI |
1040 | (or (nntp-server-opened (nnoo-current-server 'nntp)) |
1041 | (nntp-open-server (nnoo-current-server 'nntp)) | |
1042 | (error (nntp-status-message))) | |
41487370 | 1043 | ;; Send the strings. |
231f989b LMI |
1044 | (process-send-string nntp-server-process cmd) |
1045 | t)) | |
05328297 | 1046 | |
1047 | (defun nntp-send-region-to-server (begin end) | |
cb4c9483 | 1048 | "Send the current buffer region (from BEGIN to END) to the server." |
05328297 | 1049 | (save-excursion |
cb4c9483 RS |
1050 | (let ((cur (current-buffer))) |
1051 | ;; Copy the buffer over to the send buffer. | |
231f989b | 1052 | (nnheader-set-temp-buffer " *nntp send*") |
cb4c9483 RS |
1053 | (insert-buffer-substring cur begin end) |
1054 | (save-excursion | |
1055 | (set-buffer cur) | |
1056 | (erase-buffer)) | |
1057 | ;; `process-send-region' does not work if the text to be sent is very | |
1058 | ;; large, so we send it piecemeal. | |
1059 | (let ((last (point-min)) | |
1060 | (size 100)) ;Size of text sent at once. | |
231f989b LMI |
1061 | (while (and (/= last (point-max)) |
1062 | (memq (process-status nntp-server-process) '(open run))) | |
cb4c9483 RS |
1063 | (process-send-region |
1064 | nntp-server-process | |
1065 | last (setq last (min (+ last size) (point-max)))) | |
1066 | ;; Read any output from the server. May be unnecessary. | |
1067 | (accept-process-output))) | |
1068 | (kill-buffer (current-buffer))))) | |
41487370 LMI |
1069 | |
1070 | (defun nntp-open-server-semi-internal (server &optional service) | |
1071 | "Open SERVER. | |
1072 | If SERVER is nil, use value of environment variable `NNTPSERVER'. | |
1073 | If SERVICE, this this as the port number." | |
231f989b | 1074 | (nnheader-insert "") |
41487370 LMI |
1075 | (let ((server (or server (getenv "NNTPSERVER"))) |
1076 | (status nil) | |
1077 | (timer | |
1078 | (and nntp-connection-timeout | |
231f989b LMI |
1079 | (nnheader-run-at-time nntp-connection-timeout |
1080 | nil 'nntp-kill-connection server)))) | |
41487370 LMI |
1081 | (save-excursion |
1082 | (set-buffer nntp-server-buffer) | |
1083 | (setq nntp-status-string "") | |
231f989b | 1084 | (nnheader-message 5 "nntp: Connecting to server on %s..." nntp-address) |
41487370 LMI |
1085 | (cond ((and server (nntp-open-server-internal server service)) |
1086 | (setq nntp-address server) | |
1087 | (setq status | |
1088 | (condition-case nil | |
1089 | (nntp-wait-for-response "^[23].*\r?\n" 'slow) | |
1090 | (error nil) | |
1091 | (quit nil))) | |
231f989b LMI |
1092 | (unless status |
1093 | (nntp-close-server-internal server) | |
1094 | (nnheader-report | |
1095 | 'nntp "Couldn't open connection to %s" | |
1096 | (if (and nntp-address | |
1097 | (not (equal nntp-address ""))) | |
1098 | nntp-address server))) | |
1099 | (when nntp-server-process | |
1100 | (set-process-sentinel | |
1101 | nntp-server-process 'nntp-default-sentinel) | |
1102 | ;; You can send commands at startup like AUTHINFO here. | |
1103 | ;; Added by Hallvard B Furuseth <h.b.furuseth@usit.uio.no> | |
1104 | (run-hooks 'nntp-server-opened-hook))) | |
41487370 | 1105 | ((null server) |
231f989b | 1106 | (nnheader-report 'nntp "NNTP server is not specified.")) |
41487370 | 1107 | (t ; We couldn't open the server. |
231f989b LMI |
1108 | (nnheader-report |
1109 | 'nntp (buffer-substring (point-min) (point-max))))) | |
1110 | (when timer | |
1111 | (nnheader-cancel-timer timer)) | |
41487370 | 1112 | (message "") |
231f989b LMI |
1113 | (unless status |
1114 | (nnoo-close-server 'nntp server) | |
1115 | (setq nntp-async-number nil)) | |
41487370 LMI |
1116 | status))) |
1117 | ||
231f989b LMI |
1118 | (defvar nntp-default-directories '("~" "/tmp" "/") |
1119 | "Directories to as current directory in the nntp server buffer.") | |
1120 | ||
41487370 LMI |
1121 | (defun nntp-open-server-internal (server &optional service) |
1122 | "Open connection to news server on SERVER by SERVICE (default is nntp)." | |
1123 | (let (proc) | |
1124 | (save-excursion | |
41487370 | 1125 | (set-buffer nntp-server-buffer) |
231f989b LMI |
1126 | ;; Make sure we have a valid current directory for the |
1127 | ;; nntp server buffer. | |
1128 | (unless (file-exists-p default-directory) | |
1129 | (let ((dirs nntp-default-directories)) | |
1130 | (while dirs | |
1131 | (when (file-exists-p (car dirs)) | |
1132 | (setq default-directory (car dirs) | |
1133 | dirs nil)) | |
1134 | (setq dirs (cdr dirs))))) | |
1135 | (cond | |
1136 | ((and (setq proc | |
1137 | (condition-case nil | |
1138 | (funcall nntp-open-server-function server) | |
1139 | (error nil))) | |
1140 | (memq (process-status proc) '(open run))) | |
1141 | (setq nntp-server-process proc) | |
1142 | (setq nntp-address server) | |
1143 | ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>. | |
1144 | (process-kill-without-query proc) | |
1145 | (run-hooks 'nntp-server-hook) | |
1146 | (push proc nntp-opened-connections) | |
1147 | (condition-case () | |
1148 | (nntp-read-server-type) | |
1149 | (error | |
1150 | (nnheader-report 'nntp "Couldn't open server %s" server) | |
1151 | (nntp-close-server))) | |
1152 | nntp-server-process) | |
1153 | (t | |
1154 | (nnheader-report 'nntp "Couldn't open server %s" server)))))) | |
1155 | ||
1156 | (defun nntp-read-server-type () | |
1157 | "Find out what the name of the server we have connected to is." | |
1158 | ;; Wait for the status string to arrive. | |
1159 | (nntp-wait-for-response "^.*\n" t) | |
1160 | (setq nntp-server-type (buffer-string)) | |
1161 | (let ((alist nntp-server-action-alist) | |
1162 | entry) | |
1163 | ;; Run server-specific commmands. | |
1164 | (while alist | |
1165 | (setq entry (pop alist)) | |
1166 | (when (string-match (car entry) nntp-server-type) | |
1167 | (if (and (listp (cadr entry)) | |
1168 | (not (eq 'lambda (caadr entry)))) | |
1169 | (eval (cadr entry)) | |
1170 | (funcall (cadr entry))))))) | |
41487370 LMI |
1171 | |
1172 | (defun nntp-open-network-stream (server) | |
1173 | (open-network-stream | |
1174 | "nntpd" nntp-server-buffer server nntp-port-number)) | |
1175 | ||
1176 | (defun nntp-open-rlogin (server) | |
231f989b LMI |
1177 | (let ((proc (if nntp-rlogin-user-name |
1178 | (start-process | |
1179 | "nntpd" nntp-server-buffer "rsh" | |
1180 | "-l" nntp-rlogin-user-name server | |
1181 | (mapconcat 'identity | |
1182 | nntp-rlogin-parameters " ")) | |
1183 | (start-process | |
1184 | "nntpd" nntp-server-buffer "rsh" server | |
1185 | (mapconcat 'identity | |
1186 | nntp-rlogin-parameters " "))))) | |
1187 | proc)) | |
41487370 LMI |
1188 | |
1189 | (defun nntp-telnet-to-machine () | |
1190 | (let (b) | |
1191 | (telnet "localhost") | |
1192 | (goto-char (point-min)) | |
1193 | (while (not (re-search-forward "^login: *" nil t)) | |
1194 | (sit-for 1) | |
1195 | (goto-char (point-min))) | |
1196 | (goto-char (point-max)) | |
1197 | (insert "larsi") | |
1198 | (telnet-send-input) | |
1199 | (setq b (point)) | |
1200 | (while (not (re-search-forward ">" nil t)) | |
1201 | (sit-for 1) | |
1202 | (goto-char b)) | |
1203 | (goto-char (point-max)) | |
1204 | (insert "ls") | |
1205 | (telnet-send-input))) | |
05328297 | 1206 | |
41487370 | 1207 | (defun nntp-close-server-internal (&optional server) |
05328297 | 1208 | "Close connection to news server." |
41487370 | 1209 | (nntp-possibly-change-server nil server) |
05328297 | 1210 | (if nntp-server-process |
1211 | (delete-process nntp-server-process)) | |
41487370 LMI |
1212 | (setq nntp-server-process nil) |
1213 | (setq nntp-address "")) | |
05328297 | 1214 | |
1215 | (defun nntp-accept-response () | |
1216 | "Read response of server. | |
1217 | It is well-known that the communication speed will be much improved by | |
1218 | defining this function as macro." | |
1219 | ;; To deal with server process exiting before | |
1220 | ;; accept-process-output is called. | |
1221 | ;; Suggested by Jason Venner <jason@violet.berkeley.edu>. | |
1222 | ;; This is a copy of `nntp-default-sentinel'. | |
41487370 LMI |
1223 | (let ((buf (current-buffer))) |
1224 | (prog1 | |
1225 | (if (or (not nntp-server-process) | |
1226 | (not (memq (process-status nntp-server-process) '(open run)))) | |
1227 | (error "nntp: Process connection closed; %s" (nntp-status-message)) | |
1228 | (if nntp-buggy-select | |
1229 | (progn | |
1230 | ;; We cannot use `accept-process-output'. | |
1231 | ;; Fujitsu UTS requires messages during sleep-for. | |
1232 | ;; I don't know why. | |
231f989b | 1233 | (nnheader-message 5 "NNTP: Reading...") |
41487370 | 1234 | (sleep-for 1) |
231f989b | 1235 | (nnheader-message 5 "")) |
41487370 | 1236 | (condition-case errorcode |
e9bd11e5 | 1237 | (accept-process-output nntp-server-process 1) |
41487370 LMI |
1238 | (error |
1239 | (cond ((string-equal "select error: Invalid argument" | |
1240 | (nth 1 errorcode)) | |
1241 | ;; Ignore select error. | |
1242 | nil) | |
1243 | (t | |
1244 | (signal (car errorcode) (cdr errorcode)))))))) | |
1245 | (set-buffer buf)))) | |
1246 | ||
1247 | (defun nntp-last-element (list) | |
1248 | "Return last element of LIST." | |
1249 | (while (cdr list) | |
1250 | (setq list (cdr list))) | |
1251 | (car list)) | |
1252 | ||
b2b9d575 RS |
1253 | (defun nntp-possibly-change-server (newsgroup server &optional connectionless) |
1254 | "Check whether the virtual server needs changing." | |
231f989b LMI |
1255 | (when (and server |
1256 | (not (nntp-server-opened server))) | |
1257 | ;; This virtual server isn't open, so we (re)open it here. | |
1258 | (nntp-open-server server nil t)) | |
1259 | (when (and newsgroup | |
1260 | (not (equal newsgroup nntp-current-group))) | |
1261 | ;; Set the proper current group. | |
1262 | (nntp-request-group newsgroup server))) | |
1263 | ||
41487370 LMI |
1264 | (defun nntp-try-list-active (group) |
1265 | (nntp-list-active-group group) | |
1266 | (save-excursion | |
1267 | (set-buffer nntp-server-buffer) | |
1268 | (goto-char (point-min)) | |
1269 | (cond ((looking-at "5[0-9]+") | |
1270 | (setq nntp-server-list-active-group nil)) | |
1271 | (t | |
1272 | (setq nntp-server-list-active-group t))))) | |
1273 | ||
1274 | (defun nntp-async-server-opened () | |
1275 | (and nntp-async-process | |
1276 | (memq (process-status nntp-async-process) '(open run)))) | |
1277 | ||
1278 | (defun nntp-async-open-server () | |
1279 | (save-excursion | |
1280 | (set-buffer (generate-new-buffer " *async-nntp*")) | |
1281 | (setq nntp-async-buffer (current-buffer)) | |
1282 | (buffer-disable-undo (current-buffer))) | |
1283 | (let ((nntp-server-process nil) | |
1284 | (nntp-server-buffer nntp-async-buffer)) | |
1285 | (nntp-open-server-semi-internal nntp-address nntp-port-number) | |
1286 | (if (not (setq nntp-async-process nntp-server-process)) | |
1287 | (progn | |
1288 | (setq nntp-async-number nil)) | |
1289 | (set-process-buffer nntp-async-process nntp-async-buffer)))) | |
1290 | ||
1291 | (defun nntp-async-fetch-articles (article) | |
1292 | (if (stringp article) | |
1293 | () | |
1294 | (let ((articles (cdr (memq (assq article nntp-async-articles) | |
1295 | nntp-async-articles))) | |
1296 | (max (cond ((numberp nntp-async-number) | |
1297 | nntp-async-number) | |
1298 | ((eq nntp-async-number t) | |
1299 | (length nntp-async-articles)) | |
1300 | (t 0))) | |
1301 | nart) | |
1302 | (while (and (>= (setq max (1- max)) 0) | |
1303 | articles) | |
231f989b | 1304 | (or (memq (setq nart (caar articles)) nntp-async-fetched) |
41487370 LMI |
1305 | (progn |
1306 | (nntp-async-send-strings "ARTICLE " (int-to-string nart)) | |
1307 | (setq nntp-async-fetched (cons nart nntp-async-fetched)))) | |
1308 | (setq articles (cdr articles)))))) | |
1309 | ||
1310 | (defun nntp-async-send-strings (&rest strings) | |
231f989b | 1311 | (let ((cmd (concat (mapconcat 'identity strings " ") nntp-end-of-line))) |
41487370 LMI |
1312 | (or (nntp-async-server-opened) |
1313 | (nntp-async-open-server) | |
231f989b | 1314 | (error (nntp-status-message))) |
41487370 LMI |
1315 | (process-send-string nntp-async-process cmd))) |
1316 | ||
1317 | (defun nntp-async-request-group (group) | |
1318 | (if (equal group nntp-current-group) | |
1319 | () | |
1320 | (let ((asyncs (assoc group nntp-async-group-alist))) | |
1321 | ;; A new group has been selected, so we push the current state | |
1322 | ;; of async articles on an alist, and pull the old state off. | |
1323 | (setq nntp-async-group-alist | |
1324 | (cons (list nntp-current-group | |
1325 | nntp-async-articles nntp-async-fetched | |
1326 | nntp-async-process) | |
1327 | (delq asyncs nntp-async-group-alist))) | |
1328 | (and asyncs | |
1329 | (progn | |
1330 | (setq nntp-async-articles (nth 1 asyncs)) | |
1331 | (setq nntp-async-fetched (nth 2 asyncs)) | |
1332 | (setq nntp-async-process (nth 3 asyncs))))))) | |
49116ac0 JB |
1333 | |
1334 | (provide 'nntp) | |
1335 | ||
6594deb0 | 1336 | ;;; nntp.el ends here |