1 ;;; nntp.el --- nntp access for Gnus
3 ;; Copyright (C) 1987-1990, 1992-1998, 2000-2011
4 ;; Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 ;; For Emacs <22.2 and XEmacs.
30 (unless (fboundp 'declare-function
) (defmacro declare-function
(&rest r
)))
31 ;; In Emacs 24, `open-protocol-stream' is an autoloaded alias for
32 ;; `make-network-stream'.
33 (unless (fboundp 'open-protocol-stream
)
34 (require 'proto-stream
)))
40 (require 'gnus-group
) ;; gnus-group-name-charset
44 (eval-when-compile (require 'cl
))
46 (autoload 'auth-source-search
"auth-source")
49 "NNTP access for Gnus."
52 (defvoo nntp-address nil
53 "Address of the physical nntp server.")
55 (defvoo nntp-port-number
"nntp"
56 "Port number on the physical nntp server.")
58 (defvoo nntp-server-opened-hook
'(nntp-send-mode-reader)
59 "*Hook used for sending commands to the server at startup.
60 The default value is `nntp-send-mode-reader', which makes an innd
61 server spawn an nnrpd server.")
63 (defvoo nntp-authinfo-function
'nntp-send-authinfo
64 "Function used to send AUTHINFO to the server.
65 It is called with no parameters.")
67 (defvoo nntp-server-action-alist
68 '(("nntpd 1\\.5\\.11t"
69 (remove-hook 'nntp-server-opened-hook
'nntp-send-mode-reader
))
70 ("NNRP server Netscape"
71 (setq nntp-server-list-active-group nil
)))
72 "Alist of regexps to match on server types and actions to be taken.
73 For instance, if you want Gnus to beep every time you connect
74 to innd, you could say something like:
76 \(setq nntp-server-action-alist
79 You probably don't want to do that, though.")
81 (defvoo nntp-open-connection-function
'nntp-open-network-stream
82 "Method for connecting to a remote system.
83 It should be a function, which is called with the output buffer
84 as its single argument, or one of the following special values:
86 - `nntp-open-network-stream' specifies a network connection,
87 upgrading to a TLS connection via STARTTLS if possible.
88 - `nntp-open-plain-stream' specifies an unencrypted network
89 connection (no STARTTLS upgrade is attempted).
90 - `nntp-open-ssl-stream' or `nntp-open-tls-stream' specify a TLS
93 Apart from the above special values, valid functions are as
94 follows; please refer to their respective doc string for more
96 For direct connections:
97 - `nntp-open-netcat-stream'
98 - `nntp-open-telnet-stream'
99 For indirect connections:
100 - `nntp-open-via-rlogin-and-netcat'
101 - `nntp-open-via-rlogin-and-telnet'
102 - `nntp-open-via-telnet-and-telnet'")
104 (defvoo nntp-never-echoes-commands nil
105 "*Non-nil means the nntp server never echoes commands.
106 It is reported that some nntps server doesn't echo commands. So, you
107 may want to set this to non-nil in the method for such a server setting
108 `nntp-open-connection-function' to `nntp-open-ssl-stream' for example.
109 Note that the `nntp-open-connection-functions-never-echo-commands'
110 variable overrides the nil value of this variable.")
112 (defvoo nntp-open-connection-functions-never-echo-commands
113 '(nntp-open-network-stream)
114 "*List of functions that never echo commands.
115 Add or set a function which you set to `nntp-open-connection-function'
116 to this list if it does not echo commands. Note that a non-nil value
117 of the `nntp-never-echoes-commands' variable overrides this variable.")
119 (defvoo nntp-pre-command nil
120 "*Pre-command to use with the various nntp-open-via-* methods.
121 This is where you would put \"runsocks\" or stuff like that.")
123 (defvoo nntp-telnet-command
"telnet"
124 "*Telnet command used to connect to the nntp server.
125 This command is used by the methods `nntp-open-telnet-stream',
126 `nntp-open-via-rlogin-and-telnet' and `nntp-open-via-telnet-and-telnet'.")
128 (defvoo nntp-telnet-switches
'("-8")
129 "*Switches given to the telnet command `nntp-telnet-command'.")
131 (defvoo nntp-end-of-line
"\r\n"
132 "*String to use on the end of lines when talking to the NNTP server.
133 This is \"\\r\\n\" by default, but should be \"\\n\" when using an indirect
134 connection method (nntp-open-via-*).")
136 (defvoo nntp-via-rlogin-command
"rsh"
137 "*Rlogin command used to connect to an intermediate host.
138 This command is used by the methods `nntp-open-via-rlogin-and-telnet'
139 and `nntp-open-via-rlogin-and-netcat'. The default is \"rsh\", but \"ssh\"
140 is a popular alternative.")
142 (defvoo nntp-via-rlogin-command-switches nil
143 "*Switches given to the rlogin command `nntp-via-rlogin-command'.
144 If you use \"ssh\" for `nntp-via-rlogin-command', you may set this to
145 \(\"-C\") in order to compress all data connections, otherwise set this
146 to \(\"-t\" \"-e\" \"none\") or (\"-C\" \"-t\" \"-e\" \"none\") if the telnet
147 command requires a pseudo-tty allocation on an intermediate host.")
149 (defvoo nntp-via-telnet-command
"telnet"
150 "*Telnet command used to connect to an intermediate host.
151 This command is used by the `nntp-open-via-telnet-and-telnet' method.")
153 (defvoo nntp-via-telnet-switches
'("-8")
154 "*Switches given to the telnet command `nntp-via-telnet-command'.")
156 (defvoo nntp-netcat-command
"nc"
157 "*Netcat command used to connect to the nntp server.
158 This command is used by the `nntp-open-netcat-stream' and
159 `nntp-open-via-rlogin-and-netcat' methods.")
161 (defvoo nntp-netcat-switches nil
162 "*Switches given to the netcat command `nntp-netcat-command'.")
164 (defvoo nntp-via-user-name nil
165 "*User name to log in on an intermediate host with.
166 This variable is used by the various nntp-open-via-* methods.")
168 (defvoo nntp-via-user-password nil
169 "*Password to use to log in on an intermediate host with.
170 This variable is used by the `nntp-open-via-telnet-and-telnet' method.")
172 (defvoo nntp-via-address nil
173 "*Address of an intermediate host to connect to.
174 This variable is used by the various nntp-open-via-* methods.")
176 (defvoo nntp-via-envuser nil
177 "*Whether both telnet client and server support the ENVIRON option.
178 If non-nil, there will be no prompt for a login name.")
180 (defvoo nntp-via-shell-prompt
"bash\\|\$ *\r?$\\|> *\r?"
181 "*Regular expression to match the shell prompt on an intermediate host.
182 This variable is used by the `nntp-open-via-telnet-and-telnet' method.")
184 (defvoo nntp-large-newsgroup
50
185 "*The number of articles which indicates a large newsgroup.
186 If the number of articles is greater than the value, verbose
187 messages will be shown to indicate the current status.")
189 (defvoo nntp-maximum-request
400
190 "*The maximum number of the requests sent to the NNTP server at one time.
191 If Emacs hangs up while retrieving headers, set the variable to a
194 (defvoo nntp-nov-is-evil nil
195 "*If non-nil, nntp will never attempt to use XOVER when talking to the server.")
197 (defvoo nntp-xover-commands
'("XOVER" "XOVERVIEW")
198 "*List of strings that are used as commands to fetch NOV lines from a server.
199 The strings are tried in turn until a positive response is gotten. If
200 none of the commands are successful, nntp will just grab headers one
203 (defvoo nntp-nov-gap
5
204 "*Maximum allowed gap between two articles.
205 If the gap between two consecutive articles is bigger than this
206 variable, split the XOVER request into two requests.")
208 (defvoo nntp-xref-number-is-evil nil
209 "*If non-nil, Gnus never trusts article numbers in the Xref header.
210 Some news servers, e.g., ones running Diablo, run multiple engines
211 having the same articles but article numbers are not kept synchronized
212 between them. If you connect to such a server, set this to a non-nil
213 value, and Gnus never uses article numbers (that appear in the Xref
214 header and vary by which engine is chosen) to refer to articles.")
216 (defvoo nntp-prepare-server-hook nil
217 "*Hook run before a server is opened.
218 If can be used to set up a server remotely, for instance. Say you
219 have an account at the machine \"other.machine\". This machine has
220 access to an NNTP server that you can't access locally. You could
221 then use this hook to rsh to the remote machine and start a proxy NNTP
222 server there that you can connect to. See also
223 `nntp-open-connection-function'")
225 (defvoo nntp-coding-system-for-read
'binary
226 "*Coding system to read from NNTP.")
228 (defvoo nntp-coding-system-for-write
'binary
229 "*Coding system to write to NNTP.")
232 (defvoo nntp-marks-is-evil nil
233 "*If non-nil, Gnus will never generate and use marks file for nntp groups.
234 See `nnml-marks-is-evil' for more information.")
236 (defvoo nntp-marks-file-name
".marks")
237 (defvoo nntp-marks nil
)
238 (defvar nntp-marks-modtime
(gnus-make-hashtable))
240 (defcustom nntp-marks-directory
241 (nnheader-concat gnus-directory
"marks/")
242 "*The directory where marks for nntp groups will be stored."
246 (defcustom nntp-authinfo-file
"~/.authinfo"
247 ".netrc-like file that holds nntp authinfo passwords."
251 (repeat :tag
"Entries"
254 :value
("" ("login" .
"") ("password" .
""))
258 (const :format
"" "login")
259 (string :format
"Login: %v"))
261 (const :format
"" "password")
262 (string :format
"Password: %v")))))))
266 (defvoo nntp-connection-timeout nil
267 "*Number of seconds to wait before an nntp connection times out.
268 If this variable is nil, which is the default, no timers are set.
269 NOTE: This variable is never seen to work in Emacs 20 and XEmacs 21.")
271 (defvoo nntp-prepare-post-hook nil
272 "*Hook run just before posting an article. It is supposed to be used
273 to insert Cancel-Lock headers.")
275 (defvoo nntp-server-list-active-group
'try
276 "If nil, then always use GROUP instead of LIST ACTIVE.
277 This is usually slower, but on misconfigured servers that don't
278 update their active files often, this can help.")
280 ;;; Internal variables.
282 (defvar nntp-record-commands nil
283 "*If non-nil, nntp will record all commands in the \"*nntp-log*\" buffer.")
285 (defvar nntp-have-messaged nil
)
287 (defvar nntp-process-wait-for nil
)
288 (defvar nntp-process-to-buffer nil
)
289 (defvar nntp-process-callback nil
)
290 (defvar nntp-process-decode nil
)
291 (defvar nntp-process-start-point nil
)
292 (defvar nntp-inside-change-function nil
)
293 (defvoo nntp-last-command-time nil
)
294 (defvoo nntp-last-command nil
)
295 (defvoo nntp-authinfo-password nil
)
296 (defvoo nntp-authinfo-user nil
)
297 (defvoo nntp-authinfo-force nil
)
299 (defvar nntp-connection-list nil
)
301 (defvoo nntp-server-type nil
)
302 (defvoo nntp-connection-alist nil
)
303 (defvoo nntp-status-string
"")
304 (defconst nntp-version
"nntp 5.0")
305 (defvoo nntp-inhibit-erase nil
)
306 (defvoo nntp-inhibit-output nil
)
308 (defvoo nntp-server-xover
'try
)
310 (defvar nntp-async-timer nil
)
311 (defvar nntp-async-process-list nil
)
313 (defvar nntp-authinfo-rejected nil
314 "A custom error condition used to report 'Authentication Rejected' errors.
315 Condition handlers that match just this condition ensure that the nntp
316 backend doesn't catch this error.")
317 (put 'nntp-authinfo-rejected
'error-conditions
'(error nntp-authinfo-rejected
))
318 (put 'nntp-authinfo-rejected
'error-message
"Authorization Rejected")
322 ;;; Internal functions.
324 (defsubst nntp-send-string
(process string
)
325 "Send STRING to PROCESS."
326 ;; We need to store the time to provide timeouts, and
327 ;; to store the command so the we can replay the command
328 ;; if the server gives us an AUTHINFO challenge.
329 (setq nntp-last-command-time
(current-time)
330 nntp-last-command string
)
331 (when nntp-record-commands
332 (nntp-record-command string
))
333 (process-send-string process
(concat string nntp-end-of-line
))
334 (or (memq (process-status process
) '(open run
))
335 (nntp-report "Server closed connection")))
337 (defun nntp-record-command (string)
338 "Record the command STRING."
339 (with-current-buffer (get-buffer-create "*nntp-log*")
340 (goto-char (point-max))
341 (let ((time (current-time)))
342 (insert (format-time-string "%Y%m%dT%H%M%S" time
)
343 "." (format "%03d" (/ (nth 2 time
) 1000))
344 " " nntp-address
" " string
"\n"))))
346 (defun nntp-report (&rest args
)
347 "Report an error from the nntp backend. The first string in ARGS
348 can be a format string. For some commands, the failed command may be
349 retried once before actually displaying the error report."
351 (when nntp-record-commands
352 (nntp-record-command "*** CALLED nntp-report ***"))
354 (nnheader-report 'nntp args
)
358 (defun nntp-report-1 (&rest args
)
359 "Throws out to nntp-with-open-group-error so that the connection may
360 be restored and the command retried."
362 (when nntp-record-commands
363 (nntp-record-command "*** CONNECTION LOST ***"))
365 (throw 'nntp-with-open-group-error t
))
367 (defmacro nntp-copy-to-buffer
(buffer start end
)
368 "Copy string from unibyte current buffer to multibyte buffer."
369 (if (featurep 'xemacs
)
370 `(copy-to-buffer ,buffer
,start
,end
)
371 `(let ((string (buffer-substring ,start
,end
)))
372 (with-current-buffer ,buffer
374 (insert (if enable-multibyte-characters
375 (mm-string-to-multibyte string
)
377 (goto-char (point-min))
380 (defsubst nntp-wait-for
(process wait-for buffer
&optional decode discard
)
381 "Wait for WAIT-FOR to arrive from PROCESS."
383 (with-current-buffer (process-buffer process
)
384 (goto-char (point-min))
386 (while (and (or (not (memq (char-after (point)) '(?
2 ?
3 ?
4 ?
5)))
387 (looking-at "48[02]"))
388 (memq (process-status process
) '(open run
)))
389 (cond ((looking-at "480")
390 (nntp-handle-authinfo process
))
392 (nnheader-report 'nntp
"%s"
393 (get 'nntp-authinfo-rejected
'error-message
))
394 (signal 'nntp-authinfo-rejected nil
))
395 ((looking-at "^.*\n")
396 (delete-region (point) (progn (forward-line 1) (point)))))
397 (nntp-accept-process-output process
)
398 (goto-char (point-min)))
403 (nntp-snarf-error-message)
405 ((not (memq (process-status process
) '(open run
)))
406 (nntp-report "Server closed connection"))
408 (goto-char (point-max))
409 (let ((limit (point-min))
411 (while (not (re-search-backward wait-for limit t
))
412 (nntp-accept-process-output process
)
413 ;; We assume that whatever we wait for is less than 1000
415 (setq limit
(max (- (point-max) 1000) (point-min)))
416 (goto-char (point-max)))
417 (setq response
(match-string 0))
418 (with-current-buffer nntp-server-buffer
419 (setq nntp-process-response response
)))
420 (nntp-decode-text (not decode
))
422 (with-current-buffer buffer
423 (goto-char (point-max))
424 (nnheader-insert-buffer-substring (process-buffer process
))
425 ;; Nix out "nntp reading...." message.
426 (when nntp-have-messaged
427 (setq nntp-have-messaged nil
)
428 (nnheader-message 5 ""))))
433 (defun nntp-kill-buffer (buffer)
434 (when (buffer-name buffer
)
436 (nnheader-init-server-buffer)))
438 (defun nntp-erase-buffer (buffer)
439 "Erase contents of BUFFER."
440 (with-current-buffer buffer
443 (defsubst nntp-find-connection
(buffer)
444 "Find the connection delivering to BUFFER."
445 (let ((alist nntp-connection-alist
)
446 (buffer (if (stringp buffer
) (get-buffer buffer
) buffer
))
448 (while (and alist
(setq entry
(pop alist
)))
449 (when (eq buffer
(cadr entry
))
450 (setq process
(car entry
)
453 (if (memq (process-status process
) '(open run
))
455 (nntp-kill-buffer (process-buffer process
))
456 (setq nntp-connection-alist
(delq entry nntp-connection-alist
))
459 (defsubst nntp-find-connection-entry
(buffer)
460 "Return the entry for the connection to BUFFER."
461 (assq (nntp-find-connection buffer
) nntp-connection-alist
))
463 (defun nntp-find-connection-buffer (buffer)
464 "Return the process connection buffer tied to BUFFER."
465 (let ((process (nntp-find-connection buffer
)))
467 (process-buffer process
))))
469 (defsubst nntp-retrieve-data
(command address port buffer
470 &optional wait-for callback decode
)
471 "Use COMMAND to retrieve data into BUFFER from PORT on ADDRESS."
472 (let ((process (or (nntp-find-connection buffer
)
473 (nntp-open-connection buffer
))))
476 (unless (or nntp-inhibit-erase nnheader-callback-function
)
477 (nntp-erase-buffer (process-buffer process
)))
481 (nntp-send-string process command
))
483 ((eq callback
'ignore
)
485 ((and callback wait-for
)
486 (nntp-async-wait process wait-for buffer decode callback
)
489 (nntp-wait-for process wait-for buffer decode
))
491 (nntp-authinfo-rejected
492 (signal 'nntp-authinfo-rejected
(cdr err
)))
494 (nnheader-report 'nntp
"Couldn't open connection to %s: %s"
497 (message "Quit retrieving data from nntp")
500 (nnheader-report 'nntp
"Couldn't open connection to %s" address
))))
502 (defsubst nntp-send-command
(wait-for &rest strings
)
503 "Send STRINGS to server and wait until WAIT-FOR returns."
504 (when (and (not nnheader-callback-function
)
505 (not nntp-inhibit-output
))
506 (nntp-erase-buffer nntp-server-buffer
))
507 (let* ((command (mapconcat 'identity strings
" "))
508 (process (nntp-find-connection nntp-server-buffer
))
509 (buffer (and process
(process-buffer process
)))
510 (pos (and buffer
(with-current-buffer buffer
(point)))))
513 (nntp-retrieve-data command
514 nntp-address nntp-port-number
516 wait-for nnheader-callback-function
)
517 ;; If nothing to wait for, still remove possibly echo'ed commands.
518 ;; We don't have echoes if `nntp-never-echoes-commands' is non-nil
519 ;; or the value of `nntp-open-connection-function' is in
520 ;; `nntp-open-connection-functions-never-echo-commands', so we
521 ;; skip this in that cases.
523 nntp-never-echoes-commands
525 nntp-open-connection-function
526 nntp-open-connection-functions-never-echo-commands
))
527 (nntp-accept-response)
528 (with-current-buffer buffer
530 (if (looking-at (regexp-quote command
))
531 (delete-region pos
(progn (forward-line 1)
533 (nnheader-report 'nntp
"Couldn't open connection to %s."
536 (defun nntp-send-command-nodelete (wait-for &rest strings
)
537 "Send STRINGS to server and wait until WAIT-FOR returns."
538 (let* ((command (mapconcat 'identity strings
" "))
539 (process (nntp-find-connection nntp-server-buffer
))
540 (buffer (and process
(process-buffer process
)))
541 (pos (and buffer
(with-current-buffer buffer
(point)))))
544 (nntp-retrieve-data command
545 nntp-address nntp-port-number
547 wait-for nnheader-callback-function
)
548 ;; If nothing to wait for, still remove possibly echo'ed commands
550 (nntp-accept-response)
551 (with-current-buffer buffer
553 (if (looking-at (regexp-quote command
))
554 (delete-region pos
(progn (forward-line 1)
556 (nnheader-report 'nntp
"Couldn't open connection to %s."
559 (defun nntp-send-command-and-decode (wait-for &rest strings
)
560 "Send STRINGS to server and wait until WAIT-FOR returns."
561 (when (and (not nnheader-callback-function
)
562 (not nntp-inhibit-output
))
563 (nntp-erase-buffer nntp-server-buffer
))
564 (let* ((command (mapconcat 'identity strings
" "))
565 (process (nntp-find-connection nntp-server-buffer
))
566 (buffer (and process
(process-buffer process
)))
567 (pos (and buffer
(with-current-buffer buffer
(point)))))
570 (nntp-retrieve-data command
571 nntp-address nntp-port-number
573 wait-for nnheader-callback-function t
)
574 ;; If nothing to wait for, still remove possibly echo'ed commands
576 (nntp-accept-response)
577 (with-current-buffer buffer
579 (if (looking-at (regexp-quote command
))
580 (delete-region pos
(progn (forward-line 1) (point-at-bol))))
582 (nnheader-report 'nntp
"Couldn't open connection to %s."
586 (defun nntp-send-buffer (wait-for)
587 "Send the current buffer to server and wait until WAIT-FOR returns."
588 (when (and (not nnheader-callback-function
)
589 (not nntp-inhibit-output
))
591 (nntp-find-connection-buffer nntp-server-buffer
)))
593 ;; Make sure we did not forget to encode some of the content.
594 (assert (save-excursion (goto-char (point-min))
595 (not (re-search-forward "[^\000-\377]" nil t
))))
596 (mm-disable-multibyte)
597 (process-send-region (nntp-find-connection nntp-server-buffer
)
598 (point-min) (point-max))
600 nil nntp-address nntp-port-number nntp-server-buffer
601 wait-for nnheader-callback-function
))
605 ;;; Interface functions.
607 (nnoo-define-basics nntp
)
609 (defsubst nntp-next-result-arrived-p
()
611 ;; A result that starts with a 2xx code is terminated by
612 ;; a line with only a "." on it.
613 ((eq (char-after) ?
2)
614 (if (re-search-forward "\n\\.\r?\n" nil t
)
616 ;; Some broken news servers add another dot at the end.
617 ;; Protect against inflooping there.
618 (while (looking-at "^\\.\r?\n")
622 ;; A result that starts with a 3xx or 4xx code is terminated
625 (if (search-forward "\n" nil t
)
633 (defvar nntp-with-open-group-internal nil
)
634 (defvar nntp-report-n nil
))
636 (defun nntp-with-open-group-function (-group -server -connectionless -bodyfun
)
637 "Protect against servers that don't like clients that keep idle connections opens.
638 The problem being that these servers may either close a connection or
639 simply ignore any further requests on a connection. Closed
640 connections are not detected until `accept-process-output' has updated
641 the `process-status'. Dropped connections are not detected until the
642 connection timeouts (which may be several minutes) or
643 `nntp-connection-timeout' has expired. When these occur
644 `nntp-with-open-group', opens a new connection then re-issues the NNTP
645 command whose response triggered the error."
646 (letf ((nntp-report-n (symbol-function 'nntp-report
))
647 ((symbol-function 'nntp-report
) (symbol-function 'nntp-report-1
))
648 (nntp-with-open-group-internal nil
))
649 (while (catch 'nntp-with-open-group-error
650 ;; Open the connection to the server
651 ;; NOTE: Existing connections are NOT tested.
652 (nntp-possibly-change-group -group -server -connectionless
)
655 (and nntp-connection-timeout
657 nntp-connection-timeout nil
659 (let* ((-process (nntp-find-connection
661 (-buffer (and -process
662 (process-buffer -process
))))
663 ;; When I an able to identify the
664 ;; connection to the server AND I've
665 ;; received NO reponse for
666 ;; nntp-connection-timeout seconds.
667 (when (and -buffer
(eq 0 (buffer-size -buffer
)))
668 ;; Close the connection. Take no
669 ;; other action as the accept input
670 ;; code will handle the closed
672 (nntp-kill-buffer -buffer
))))))))
674 (setq nntp-with-open-group-internal
678 (unless debug-on-quit
680 (signal 'quit nil
))))
682 (nnheader-cancel-timer -timer
)))
684 (setf (symbol-function 'nntp-report
) nntp-report-n
))
685 nntp-with-open-group-internal
))
687 (defmacro nntp-with-open-group
(group server
&optional connectionless
&rest forms
)
688 "Protect against servers that don't like clients that keep idle connections opens.
689 The problem being that these servers may either close a connection or
690 simply ignore any further requests on a connection. Closed
691 connections are not detected until `accept-process-output' has updated
692 the `process-status'. Dropped connections are not detected until the
693 connection timeouts (which may be several minutes) or
694 `nntp-connection-timeout' has expired. When these occur
695 `nntp-with-open-group', opens a new connection then re-issues the NNTP
696 command whose response triggered the error."
697 (declare (indent 2) (debug (form form
[&optional symbolp
] def-body
)))
698 (when (and (listp connectionless
)
699 (not (eq connectionless nil
)))
700 (setq forms
(cons connectionless forms
)
702 `(nntp-with-open-group-function ,group
,server
,connectionless
(lambda () ,@forms
)))
704 (deffoo nntp-retrieve-headers
(articles &optional group server fetch-old
)
705 "Retrieve the headers of ARTICLES."
706 (nntp-with-open-group
708 (with-current-buffer (nntp-find-connection-buffer nntp-server-buffer
)
710 (if (and (not gnus-nov-is-evil
)
711 (not nntp-nov-is-evil
)
712 (nntp-retrieve-headers-with-xover articles fetch-old
))
713 ;; We successfully retrieved the headers via XOVER.
715 ;; XOVER didn't work, so we do it the hard, slow and inefficient
717 (let ((number (length articles
))
721 (last-point (point-min))
722 (buf (nntp-find-connection-buffer nntp-server-buffer
))
723 (nntp-inhibit-erase t
)
725 ;; Send HEAD commands.
726 (while (setq article
(pop articles
))
729 "HEAD" (if (numberp article
)
730 (int-to-string article
)
731 ;; `articles' is either a list of article numbers
732 ;; or a list of article IDs.
735 ;; Every 400 requests we have to read the stream in
736 ;; order to avoid deadlocks.
737 (when (or (null articles
) ;All requests have been sent.
738 (zerop (% count nntp-maximum-request
)))
739 (nntp-accept-response)
742 (goto-char last-point
)
744 (while (nntp-next-result-arrived-p)
745 (setq last-point
(point))
748 ;; If number of headers is greater than 100, give
749 ;; informative messages.
750 (and (numberp nntp-large-newsgroup
)
751 (> number nntp-large-newsgroup
)
752 (zerop (% received
20))
753 (nnheader-message 6 "NNTP: Receiving headers... %d%%"
754 (/ (* received
100) number
)))
755 (nntp-accept-response))))
756 (and (numberp nntp-large-newsgroup
)
757 (> number nntp-large-newsgroup
)
758 (nnheader-message 6 "NNTP: Receiving headers...done"))
760 ;; Now all of replies are received. Fold continuation lines.
761 (nnheader-fold-continuation-lines)
762 ;; Remove all "\r"'s.
764 (nntp-copy-to-buffer nntp-server-buffer
(point-min) (point-max))
767 (deffoo nntp-retrieve-group-data-early
(server infos
)
768 "Retrieve group info on INFOS."
769 (nntp-with-open-group nil server
770 (when (nntp-find-connection-buffer nntp-server-buffer
)
771 ;; The first time this is run, this variable is `try'. So we
773 (when (eq nntp-server-list-active-group
'try
)
774 (nntp-try-list-active
775 (gnus-group-real-name (gnus-info-group (car infos
)))))
776 (with-current-buffer (nntp-find-connection-buffer nntp-server-buffer
)
778 (let ((nntp-inhibit-erase t
)
779 (command (if nntp-server-list-active-group
780 "LIST ACTIVE" "GROUP")))
783 nil command
(gnus-group-real-name (gnus-info-group info
)))))
786 (deffoo nntp-finish-retrieve-group-infos
(server infos count
)
787 (nntp-with-open-group nil server
788 (let ((buf (nntp-find-connection-buffer nntp-server-buffer
))
789 (method (gnus-find-method-for-group
790 (gnus-info-group (car infos
))
796 (with-current-buffer buf
797 (while (and (gnus-buffer-live-p buf
)
799 (goto-char last-point
)
801 (while (re-search-forward
802 (if nntp-server-list-active-group
807 (setq last-point
(point))
809 (nntp-accept-response))
810 ;; We now have all the entries. Remove CRs.
812 (if (not nntp-server-list-active-group
)
814 (nntp-copy-to-buffer nntp-server-buffer
815 (point-min) (point-max))
816 (gnus-groups-to-gnus-format method gnus-active-hashtb t
))
817 ;; We have read active entries, so we just delete the
819 (goto-char (point-min))
820 (while (re-search-forward "^[.2-5]" nil t
)
821 (delete-region (match-beginning 0)
822 (progn (forward-line 1) (point))))
823 (nntp-copy-to-buffer nntp-server-buffer
(point-min) (point-max))
824 (with-current-buffer nntp-server-buffer
825 (gnus-active-to-gnus-format
826 ;; Kludge to use the extended method name if you have
828 (if (consp (gnus-info-method (car infos
)))
829 (gnus-info-method (car infos
))
831 gnus-active-hashtb nil t
))))))))
833 (deffoo nntp-retrieve-groups
(groups &optional server
)
834 "Retrieve group info on GROUPS."
835 (nntp-with-open-group
837 (when (nntp-find-connection-buffer nntp-server-buffer
)
840 ;; Erase nntp-server-buffer before nntp-inhibit-erase.
841 (nntp-erase-buffer nntp-server-buffer
)
842 (set-buffer (nntp-find-connection-buffer nntp-server-buffer
))
843 ;; The first time this is run, this variable is `try'. So we
845 (when (eq nntp-server-list-active-group
'try
)
846 (nntp-try-list-active (car groups
)))
851 (last-point (point-min))
852 (nntp-inhibit-erase t
)
853 (buf (nntp-find-connection-buffer nntp-server-buffer
))
854 (command (if nntp-server-list-active-group
855 "LIST ACTIVE" "GROUP")))
857 ;; Timeout may have killed the buffer.
858 (unless (gnus-buffer-live-p buf
)
859 (nnheader-report 'nntp
"Connection to %s is closed." server
)
861 ;; Send the command to the server.
862 (nntp-send-command nil command
(pop groups
))
864 ;; Every 400 requests we have to read the stream in
865 ;; order to avoid deadlocks.
866 (when (or (null groups
) ;All requests have been sent.
867 (zerop (% count nntp-maximum-request
)))
868 (nntp-accept-response)
869 (while (and (gnus-buffer-live-p buf
)
871 ;; Search `blue moon' in this file for the
872 ;; reason why set-buffer here.
874 (goto-char last-point
)
876 (while (re-search-forward "^[0-9]" nil t
)
878 (setq last-point
(point))
880 (nntp-accept-response))))
882 ;; Wait for the reply from the final command.
883 (unless (gnus-buffer-live-p buf
)
884 (nnheader-report 'nntp
"Connection to %s is closed." server
)
887 (goto-char (point-max))
888 (re-search-backward "^[0-9]" nil t
)
889 (when (looking-at "^[23]")
890 (while (and (gnus-buffer-live-p buf
)
893 (goto-char (point-max))
894 (if (not nntp-server-list-active-group
)
895 (not (re-search-backward "\r?\n"
897 (not (re-search-backward "^\\.\r?\n"
899 (nntp-accept-response)))
901 ;; Now all replies are received. We remove CRs.
902 (unless (gnus-buffer-live-p buf
)
903 (nnheader-report 'nntp
"Connection to %s is closed." server
)
906 (goto-char (point-min))
907 (while (search-forward "\r" nil t
)
908 (replace-match "" t t
))
910 (if (not nntp-server-list-active-group
)
912 (nntp-copy-to-buffer nntp-server-buffer
913 (point-min) (point-max))
915 ;; We have read active entries, so we just delete the
917 (goto-char (point-min))
918 (while (re-search-forward "^[.2-5]" nil t
)
919 (delete-region (match-beginning 0)
920 (progn (forward-line 1) (point))))
921 (nntp-copy-to-buffer nntp-server-buffer
(point-min) (point-max))
924 (deffoo nntp-retrieve-articles
(articles &optional group server
)
925 (nntp-with-open-group
928 (let ((number (length articles
))
932 (last-point (point-min))
933 (buf (nntp-find-connection-buffer nntp-server-buffer
))
934 (nntp-inhibit-erase t
)
935 (map (apply 'vector articles
))
940 ;; Send ARTICLE command.
941 (while (setq article
(pop articles
))
944 "ARTICLE" (if (numberp article
)
945 (int-to-string article
)
946 ;; `articles' is either a list of article numbers
947 ;; or a list of article IDs.
950 ;; Every 400 requests we have to read the stream in
951 ;; order to avoid deadlocks.
952 (when (or (null articles
) ;All requests have been sent.
953 (zerop (% count nntp-maximum-request
)))
954 (nntp-accept-response)
957 (goto-char last-point
)
959 (while (nntp-next-result-arrived-p)
960 (aset map received
(cons (aref map received
) (point)))
961 (setq last-point
(point))
964 ;; If number of headers is greater than 100, give
965 ;; informative messages.
966 (and (numberp nntp-large-newsgroup
)
967 (> number nntp-large-newsgroup
)
968 (zerop (% received
20))
969 (nnheader-message 6 "NNTP: Receiving articles... %d%%"
970 (/ (* received
100) number
)))
971 (nntp-accept-response))))
972 (and (numberp nntp-large-newsgroup
)
973 (> number nntp-large-newsgroup
)
974 (nnheader-message 6 "NNTP: Receiving articles...done"))
976 ;; Now we have all the responses. We go through the results,
977 ;; wash it and copy it over to the server buffer.
978 (set-buffer nntp-server-buffer
)
980 (setq last-point
(point-min))
984 (setq point
(goto-char (point-max)))
986 (nnheader-insert-buffer-substring buf last-point
(cdr entry
))
988 (setq last-point
(cdr entry
))
991 (cons (car entry
) point
))
994 (defun nntp-try-list-active (group)
995 (nntp-list-active-group group
)
996 (with-current-buffer nntp-server-buffer
997 (goto-char (point-min))
999 (looking-at "5[0-9]+"))
1000 (setq nntp-server-list-active-group nil
))
1002 (setq nntp-server-list-active-group t
)))))
1004 (deffoo nntp-list-active-group
(group &optional server
)
1005 "Return the active info on GROUP (which can be a regexp)."
1006 (nntp-with-open-group
1008 (nntp-send-command "^\\.*\r?\n" "LIST ACTIVE" group
)))
1010 (deffoo nntp-request-group-articles
(group &optional server
)
1011 "Return the list of existing articles in GROUP."
1012 (nntp-with-open-group
1014 (nntp-send-command "^\\.*\r?\n" "LISTGROUP" group
)))
1016 (deffoo nntp-request-article
(article &optional group server buffer command
)
1017 (nntp-with-open-group
1019 (when (nntp-send-command-and-decode
1020 "\r?\n\\.\r?\n" "ARTICLE"
1021 (if (numberp article
) (int-to-string article
) article
))
1023 (not (equal buffer nntp-server-buffer
)))
1024 (with-current-buffer nntp-server-buffer
1025 (copy-to-buffer buffer
(point-min) (point-max))))
1026 (nntp-find-group-and-number group
))))
1028 (deffoo nntp-request-head
(article &optional group server
)
1029 (nntp-with-open-group
1031 (when (nntp-send-command
1032 "\r?\n\\.\r?\n" "HEAD"
1033 (if (numberp article
) (int-to-string article
) article
))
1035 (nntp-find-group-and-number group
)
1036 (nntp-decode-text)))))
1038 (deffoo nntp-request-body
(article &optional group server
)
1039 (nntp-with-open-group
1041 (nntp-send-command-and-decode
1042 "\r?\n\\.\r?\n" "BODY"
1043 (if (numberp article
) (int-to-string article
) article
))))
1045 (deffoo nntp-request-group
(group &optional server dont-check info
)
1046 (nntp-with-open-group
1048 (when (nntp-send-command "^[245].*\n" "GROUP" group
)
1049 (let ((entry (nntp-find-connection-entry nntp-server-buffer
)))
1050 (setcar (cddr entry
) group
)))))
1052 (deffoo nntp-close-group
(group &optional server
)
1055 (deffoo nntp-server-opened
(&optional server
)
1056 "Say whether a connection to SERVER has been opened."
1057 (and (nnoo-current-server-p 'nntp server
)
1059 (gnus-buffer-live-p nntp-server-buffer
)
1060 (nntp-find-connection nntp-server-buffer
)))
1062 (deffoo nntp-open-server
(server &optional defs connectionless
)
1063 (nnheader-init-server-buffer)
1064 (if (nntp-server-opened server
)
1066 (when (or (stringp (car defs
))
1067 (numberp (car defs
)))
1068 (setq defs
(cons (list 'nntp-port-number
(car defs
)) (cdr defs
))))
1069 (unless (assq 'nntp-address defs
)
1070 (setq defs
(append defs
(list (list 'nntp-address server
)))))
1071 (nnoo-change-server 'nntp server defs
)
1074 (or (nntp-find-connection nntp-server-buffer
)
1075 (nntp-open-connection nntp-server-buffer
)))))
1077 (deffoo nntp-close-server
(&optional server
)
1078 (nntp-possibly-change-group nil server t
)
1079 (let ((process (nntp-find-connection nntp-server-buffer
)))
1081 (when (memq (process-status process
) '(open run
))
1083 (nntp-send-string process
"QUIT")
1084 (unless (eq nntp-open-connection-function
'nntp-open-network-stream
)
1085 ;; Ok, this is evil, but when using telnet and stuff
1086 ;; as the connection method, it's important that the
1087 ;; QUIT command actually is sent out before we kill
1090 (nntp-kill-buffer (process-buffer process
))
1091 (setq process
(car (pop nntp-connection-alist
))))
1092 (nnoo-close-server 'nntp
)))
1094 (deffoo nntp-request-close
()
1096 (while (setq process
(pop nntp-connection-list
))
1097 (when (memq (process-status process
) '(open run
))
1099 (nntp-send-string process
"QUIT")
1100 (unless (eq nntp-open-connection-function
'nntp-open-network-stream
)
1101 ;; Ok, this is evil, but when using telnet and stuff
1102 ;; as the connection method, it's important that the
1103 ;; QUIT command actually is sent out before we kill
1106 (nntp-kill-buffer (process-buffer process
)))))
1108 (deffoo nntp-request-list
(&optional server
)
1109 (nntp-with-open-group
1111 (nntp-send-command-and-decode "\r?\n\\.\r?\n" "LIST")))
1113 (deffoo nntp-request-list-newsgroups
(&optional server
)
1114 (nntp-with-open-group
1116 (nntp-send-command "\r?\n\\.\r?\n" "LIST NEWSGROUPS")))
1118 (deffoo nntp-request-newgroups
(date &optional server
)
1119 (nntp-with-open-group
1121 (with-current-buffer nntp-server-buffer
1122 (let* ((time (date-to-time date
))
1123 (ls (- (cadr time
) (nth 8 (decode-time time
)))))
1125 (setcar time
(1- (car time
)))
1126 (setcar (cdr time
) (+ ls
65536)))
1128 (setcar time
(1+ (car time
)))
1129 (setcar (cdr time
) (- ls
65536)))
1131 (setcar (cdr time
) ls
)))
1134 "^\\.\r?\n" "NEWGROUPS"
1135 (format-time-string "%y%m%d %H%M%S" time
)
1137 (nntp-decode-text))))))
1139 (deffoo nntp-request-post
(&optional server
)
1140 (nntp-with-open-group
1142 (when (nntp-send-command "^[23].*\r?\n" "POST")
1143 (let ((response (with-current-buffer nntp-server-buffer
1144 nntp-process-response
))
1147 (string-match "^[23].*\\(<[^\t\n @<>]+@[^\t\n @<>]+>\\)"
1149 (setq server-id
(match-string 1 response
))
1150 (narrow-to-region (goto-char (point-min))
1151 (if (search-forward "\n\n" nil t
)
1154 (unless (mail-fetch-field "Message-ID")
1155 (goto-char (point-min))
1156 (insert "Message-ID: " server-id
"\n"))
1158 (run-hooks 'nntp-prepare-post-hook
)
1159 (nntp-send-buffer "^[23].*\n")))))
1161 (deffoo nntp-request-type
(group article
)
1164 (deffoo nntp-asynchronous-p
()
1167 (deffoo nntp-request-set-mark
(group actions
&optional server
)
1168 (when (and (not nntp-marks-is-evil
)
1169 nntp-marks-file-name
)
1170 (nntp-possibly-create-directory group server
)
1171 (nntp-open-marks group server
)
1172 (setq nntp-marks
(nnheader-update-marks-actions nntp-marks actions
))
1173 (nntp-save-marks group server
))
1176 (deffoo nntp-request-marks
(group info
&optional server
)
1177 (when (and (not nntp-marks-is-evil
)
1178 nntp-marks-file-name
)
1179 (nntp-possibly-create-directory group server
)
1180 (when (nntp-marks-changed-p group server
)
1181 (nnheader-message 8 "Updating marks for %s..." group
)
1182 (nntp-open-marks group server
)
1183 ;; Update info using `nntp-marks'.
1184 (mapc (lambda (pred)
1185 (unless (memq (cdr pred
) gnus-article-unpropagated-mark-lists
)
1186 (gnus-info-set-marks
1188 (gnus-update-alist-soft
1190 (cdr (assq (cdr pred
) nntp-marks
))
1191 (gnus-info-marks info
))
1193 gnus-article-mark-lists
)
1194 (let ((seen (cdr (assq 'read nntp-marks
))))
1195 (gnus-info-set-read info
1196 (if (and (integerp (car seen
))
1198 (list (cons (car seen
) (car seen
)))
1200 (nnheader-message 8 "Updating marks for %s...done" group
)))
1205 ;;; Hooky functions.
1207 (defun nntp-send-mode-reader ()
1208 "Send the MODE READER command to the nntp server.
1209 This function is supposed to be called from `nntp-server-opened-hook'.
1210 It will make innd servers spawn an nnrpd process to allow actual article
1212 (nntp-send-command "^.*\n" "MODE READER"))
1214 (declare-function netrc-parse
"netrc" (&optional file
))
1215 (declare-function netrc-machine
"netrc"
1216 (list machine
&optional port defaultport
))
1217 (declare-function netrc-get
"netrc" (alist type
))
1219 (defun nntp-send-authinfo (&optional send-if-force
)
1220 "Send the AUTHINFO to the nntp server.
1221 It will look in the \"~/.authinfo\" file for matching entries. If
1222 nothing suitable is found there, it will prompt for a user name
1225 If SEND-IF-FORCE, only send authinfo to the server if the
1226 .authinfo file has the FORCE token."
1228 (let* ((list (netrc-parse nntp-authinfo-file
))
1229 (alist (netrc-machine list nntp-address
"nntp"))
1230 (force (or (netrc-get alist
"force") nntp-authinfo-force
))
1232 (nth 0 (auth-source-search :max
1
1233 ;; TODO: allow the virtual server name too
1235 :port
'("119" "nntp"))))
1236 (auth-user (plist-get auth-info
:user
))
1237 (auth-passwd (plist-get auth-info
:secret
))
1238 (auth-passwd (if (functionp auth-passwd
)
1239 (funcall auth-passwd
)
1242 ;; this is preferred to netrc-*
1244 (netrc-get alist
"login")
1245 nntp-authinfo-user
))
1247 ;; this is preferred to netrc-*
1249 (netrc-get alist
"password"))))
1250 (when (or (not send-if-force
)
1253 (setq user
(read-string (format "NNTP (%s) user name: " nntp-address
))
1254 nntp-authinfo-user user
))
1255 (unless (member user
'(nil ""))
1256 (nntp-send-command "^3.*\r?\n" "AUTHINFO USER" user
)
1257 (when t
;???Should check if AUTHINFO succeeded
1259 "^2.*\r?\n" "AUTHINFO PASS"
1261 nntp-authinfo-password
1262 (setq nntp-authinfo-password
1263 (read-passwd (format "NNTP (%s@%s) password: "
1264 user nntp-address
))))))))))
1266 (defun nntp-send-nosy-authinfo ()
1267 "Send the AUTHINFO to the nntp server."
1268 (let ((user (read-string (format "NNTP (%s) user name: " nntp-address
))))
1269 (unless (member user
'(nil ""))
1270 (nntp-send-command "^3.*\r?\n" "AUTHINFO USER" user
)
1271 (when t
;???Should check if AUTHINFO succeeded
1272 (nntp-send-command "^2.*\r?\n" "AUTHINFO PASS"
1273 (read-passwd (format "NNTP (%s@%s) password: "
1274 user nntp-address
)))))))
1276 (defun nntp-send-authinfo-from-file ()
1277 "Send the AUTHINFO to the nntp server.
1279 The authinfo login name is taken from the user's login name and the
1280 password contained in '~/.nntp-authinfo'."
1281 (when (file-exists-p "~/.nntp-authinfo")
1283 (insert-file-contents "~/.nntp-authinfo")
1284 (goto-char (point-min))
1285 (nntp-send-command "^3.*\r?\n" "AUTHINFO USER" (user-login-name))
1287 "^2.*\r?\n" "AUTHINFO PASS"
1288 (buffer-substring (point) (point-at-eol))))))
1290 ;;; Internal functions.
1292 (defun nntp-handle-authinfo (process)
1293 "Take care of an authinfo response from the server."
1294 (let ((last nntp-last-command
))
1295 (funcall nntp-authinfo-function
)
1296 ;; We have to re-send the function that was interrupted by
1297 ;; the authinfo request.
1298 (nntp-erase-buffer nntp-server-buffer
)
1299 (nntp-send-string process last
)))
1301 (defun nntp-make-process-buffer (buffer)
1302 "Create a new, fresh buffer usable for nntp process connections."
1303 (with-current-buffer
1304 (generate-new-buffer
1305 (format " *server %s %s %s*"
1306 nntp-address nntp-port-number
1307 (gnus-buffer-exists-p buffer
)))
1308 (mm-disable-multibyte)
1309 (set (make-local-variable 'after-change-functions
) nil
)
1310 (set (make-local-variable 'nntp-process-wait-for
) nil
)
1311 (set (make-local-variable 'nntp-process-callback
) nil
)
1312 (set (make-local-variable 'nntp-process-to-buffer
) nil
)
1313 (set (make-local-variable 'nntp-process-start-point
) nil
)
1314 (set (make-local-variable 'nntp-process-decode
) nil
)
1317 (defun nntp-open-connection (buffer)
1318 "Open a connection to PORT on ADDRESS delivering output to BUFFER."
1319 (run-hooks 'nntp-prepare-server-hook
)
1320 (let* ((pbuffer (nntp-make-process-buffer buffer
))
1322 (and nntp-connection-timeout
1324 nntp-connection-timeout nil
1326 (nntp-kill-buffer ,pbuffer
)))))
1329 (let ((coding-system-for-read nntp-coding-system-for-read
)
1330 (coding-system-for-write nntp-coding-system-for-write
)
1331 (map '((nntp-open-network-stream network
)
1332 (network-only plain
) ; compat
1333 (nntp-open-plain-stream plain
)
1334 (nntp-open-ssl-stream tls
)
1335 (nntp-open-tls-stream tls
))))
1336 (if (assoc nntp-open-connection-function map
)
1337 (open-protocol-stream
1338 "nntpd" pbuffer nntp-address nntp-port-number
1339 :type
(cadr (assoc nntp-open-connection-function map
))
1340 :end-of-command
"^\\([2345]\\|[.]\\).*\n"
1341 :capability-command
"CAPABILITIES\r\n"
1344 (lambda (capabilities)
1345 (if (not (string-match "STARTTLS" capabilities
))
1348 (funcall nntp-open-connection-function pbuffer
)))
1350 (nnheader-report 'nntp
">>> %s" err
))
1352 (message "Quit opening connection to %s" nntp-address
)
1353 (nntp-kill-buffer pbuffer
)
1357 (nnheader-cancel-timer timer
))
1359 (not (memq (process-status process
) '(open run
))))
1362 (nntp-kill-buffer pbuffer
))
1363 (when (and (buffer-name pbuffer
)
1365 (gnus-set-process-query-on-exit-flag process nil
)
1366 (if (and (nntp-wait-for process
"^2.*\n" buffer nil t
)
1367 (memq (process-status process
) '(open run
)))
1369 (caar (push (list process buffer nil
) nntp-connection-alist
))
1370 (push process nntp-connection-list
)
1371 (with-current-buffer pbuffer
1372 (nntp-read-server-type)
1374 (set-buffer nntp-server-buffer
)
1375 (let ((nnheader-callback-function nil
))
1376 (run-hooks 'nntp-server-opened-hook
)
1377 (nntp-send-authinfo t
))))
1378 (nntp-kill-buffer (process-buffer process
))
1381 (defun nntp-read-server-type ()
1382 "Find out what the name of the server we have connected to is."
1383 ;; Wait for the status string to arrive.
1384 (setq nntp-server-type
(buffer-string))
1385 (let ((case-fold-search t
))
1386 ;; Run server-specific commands.
1387 (dolist (entry nntp-server-action-alist
)
1388 (when (string-match (car entry
) nntp-server-type
)
1389 (if (and (listp (cadr entry
))
1390 (not (eq 'lambda
(caadr entry
))))
1392 (funcall (cadr entry
)))))))
1394 (defun nntp-async-wait (process wait-for buffer decode callback
)
1395 (with-current-buffer (process-buffer process
)
1396 (unless nntp-inside-change-function
1398 (setq nntp-process-wait-for wait-for
1399 nntp-process-to-buffer buffer
1400 nntp-process-decode decode
1401 nntp-process-callback callback
1402 nntp-process-start-point
(point-max))
1403 (setq after-change-functions
'(nntp-after-change-function))))
1405 (defun nntp-async-timer-handler ()
1408 (if (memq (process-status proc
) '(open run
))
1409 (nntp-async-trigger proc
)
1410 (nntp-async-stop proc
)))
1411 nntp-async-process-list
))
1413 (defun nntp-async-stop (proc)
1414 (setq nntp-async-process-list
(delq proc nntp-async-process-list
))
1415 (when (and nntp-async-timer
(not nntp-async-process-list
))
1416 (nnheader-cancel-timer nntp-async-timer
)
1417 (setq nntp-async-timer nil
)))
1419 (defun nntp-after-change-function (beg end len
)
1421 ;; we only care about insertions at eob
1422 (when (and (eq 0 len
) (eq (point-max) end
))
1424 (let ((proc (get-buffer-process (current-buffer))))
1426 (nntp-async-trigger proc
)))))
1427 ;; any throw from after-change-functions will leave it
1428 ;; set to nil. so we reset it here, if necessary.
1430 (setq after-change-functions
'(nntp-after-change-function)))))
1432 (defun nntp-async-trigger (process)
1433 (with-current-buffer (process-buffer process
)
1434 (when nntp-process-callback
1435 ;; do we have an error message?
1436 (goto-char nntp-process-start-point
)
1437 (if (memq (following-char) '(?
4 ?
5))
1438 ;; wants credentials?
1439 (if (looking-at "480")
1440 (nntp-handle-authinfo process
)
1441 ;; report error message.
1442 (nntp-snarf-error-message)
1443 (nntp-do-callback nil
))
1445 ;; got what we expect?
1446 (goto-char (point-max))
1447 (when (re-search-backward
1448 nntp-process-wait-for nntp-process-start-point t
)
1449 (let ((response (match-string 0)))
1450 (with-current-buffer nntp-server-buffer
1451 (setq nntp-process-response response
)))
1452 (nntp-async-stop process
)
1454 (when (gnus-buffer-exists-p nntp-process-to-buffer
)
1455 (let ((buf (current-buffer))
1456 (start nntp-process-start-point
)
1457 (decode nntp-process-decode
))
1458 (with-current-buffer nntp-process-to-buffer
1459 (goto-char (point-max))
1461 (narrow-to-region (point) (point))
1462 (nnheader-insert-buffer-substring buf start
)
1464 (nntp-decode-text))))))
1466 (goto-char (point-max))
1468 (buffer-name (get-buffer nntp-process-to-buffer
))))))))
1470 (defun nntp-do-callback (arg)
1471 (let ((callback nntp-process-callback
)
1472 (nntp-inside-change-function t
))
1473 (setq nntp-process-callback nil
)
1474 (funcall callback arg
)))
1476 (defun nntp-snarf-error-message ()
1477 "Save the error message in the current buffer."
1478 (let ((message (buffer-string)))
1479 (while (string-match "[\r\n]+" message
)
1480 (setq message
(replace-match " " t t message
)))
1481 (nnheader-report 'nntp
"%s" message
)
1484 (defun nntp-accept-process-output (process)
1485 "Wait for output from PROCESS and message some dots."
1486 (with-current-buffer (or (nntp-find-connection-buffer nntp-server-buffer
)
1488 (let ((len (/ (buffer-size) 1024))
1491 (setq nntp-have-messaged t
)
1492 (nnheader-message 7 "nntp read: %dk" len
)))
1494 (nnheader-accept-process-output process
)
1495 ;; accept-process-output may update status of process to indicate
1496 ;; that the server has closed the connection. This MUST be
1497 ;; handled here as the buffer restored by the save-excursion may
1498 ;; be the process's former output buffer (i.e. now killed)
1500 (memq (process-status process
) '(open run
)))
1501 (nntp-report "Server closed connection")))))
1503 (defun nntp-accept-response ()
1504 "Wait for output from the process that outputs to BUFFER."
1505 (nntp-accept-process-output (nntp-find-connection nntp-server-buffer
)))
1507 (defun nntp-possibly-change-group (group server
&optional connectionless
)
1508 (let ((nnheader-callback-function nil
))
1510 (or (nntp-server-opened server
)
1511 (nntp-open-server server nil connectionless
)))
1513 (unless connectionless
1514 (or (nntp-find-connection nntp-server-buffer
)
1515 (nntp-open-connection nntp-server-buffer
))))
1518 (let ((entry (nntp-find-connection-entry nntp-server-buffer
)))
1520 (nntp-report "Server closed connection"))
1521 ((not (equal group
(caddr entry
)))
1522 (with-current-buffer (process-buffer (car entry
))
1524 (nntp-send-command "^[245].*\n" "GROUP" group
)
1525 (setcar (cddr entry
) group
)
1527 (nntp-erase-buffer nntp-server-buffer
)))))))
1529 (defun nntp-decode-text (&optional cr-only
)
1530 "Decode the text in the current buffer."
1531 (goto-char (point-min))
1532 (while (search-forward "\r" nil t
)
1535 ;; Remove trailing ".\n" end-of-transfer marker.
1536 (goto-char (point-max))
1538 (when (looking-at ".\n")
1540 ;; Delete status line.
1541 (goto-char (point-min))
1542 (while (looking-at "[1-5][0-9][0-9] .*\n")
1543 ;; For some unknown reason, there is more than one status line.
1544 (delete-region (point) (progn (forward-line 1) (point))))
1545 ;; Remove "." -> ".." encoding.
1546 (while (search-forward "\n.." nil t
)
1549 (defun nntp-encode-text ()
1550 "Encode the text in the current buffer."
1552 ;; Replace "." at beginning of line with "..".
1553 (goto-char (point-min))
1554 (while (re-search-forward "^\\." nil t
)
1556 (goto-char (point-max))
1557 ;; Insert newline at the end of the buffer.
1560 ;; Insert `.' at end of buffer (end of text mark).
1561 (goto-char (point-max))
1563 (goto-char (point-min))
1567 (insert nntp-end-of-line
))))
1569 (defun nntp-retrieve-headers-with-xover (articles &optional fetch-old
)
1570 (set-buffer nntp-server-buffer
)
1574 ;; This server does not talk NOV.
1575 ((not nntp-server-xover
)
1578 ;; We don't care about gaps.
1579 ((or (not nntp-nov-gap
)
1581 (nntp-send-xover-command
1583 (if (numberp fetch-old
)
1584 (max 1 (- (car articles
) fetch-old
))
1587 (car (last articles
)) 'wait
)
1589 (goto-char (point-min))
1590 (when (looking-at "[1-5][0-9][0-9] .*\n")
1591 (delete-region (point) (progn (forward-line 1) (point))))
1592 (while (search-forward "\r" nil t
)
1593 (replace-match "" t t
))
1594 (goto-char (point-max))
1596 (when (looking-at "\\.")
1597 (delete-region (point) (progn (forward-line 1) (point)))))
1599 ;; We do it the hard way. For each gap, an XOVER command is sent
1600 ;; to the server. We do not wait for a reply from the server, we
1601 ;; just send them off as fast as we can. That means that we have
1602 ;; to count the number of responses we get back to find out when we
1603 ;; have gotten all we asked for.
1604 ((numberp nntp-nov-gap
)
1609 (buf nntp-server-buffer
)
1610 (process-buffer (nntp-find-connection-buffer nntp-server-buffer
))
1612 ;; We have to check `nntp-server-xover'. If it gets set to nil,
1613 ;; that means that the server does not understand XOVER, but we
1614 ;; won't know that until we try.
1615 (while (and nntp-server-xover articles
)
1616 (setq first
(car articles
))
1617 ;; Search forward until we find a gap, or until we run out of
1619 (while (and (cdr articles
)
1620 (< (- (nth 1 articles
) (car articles
)) nntp-nov-gap
))
1621 (setq articles
(cdr articles
)))
1623 (setq in-process-buffer-p
(stringp nntp-server-xover
))
1624 (nntp-send-xover-command first
(setq last
(car articles
)))
1625 (setq articles
(cdr articles
))
1627 (when (and nntp-server-xover in-process-buffer-p
)
1628 ;; Don't count tried request.
1629 (setq count
(1+ count
))
1631 ;; Every 400 requests we have to read the stream in
1632 ;; order to avoid deadlocks.
1633 (when (or (null articles
) ;All requests have been sent.
1634 (= 1 (% count nntp-maximum-request
)))
1636 (nntp-accept-response)
1637 ;; On some Emacs versions the preceding function has a
1638 ;; tendency to change the buffer. Perhaps. It's quite
1639 ;; difficult to reproduce, because it only seems to happen
1640 ;; once in a blue moon.
1641 (set-buffer process-buffer
)
1643 (goto-char (or last-point
(point-min)))
1645 (while (re-search-forward "^\\([0-9][0-9][0-9]\\) .*\n"
1648 (setq status
(match-string 1))
1649 (if (string-match "^[45]" status
)
1650 (setq status
'error
)
1652 (setq last-point
(point))
1653 (or (< received count
)
1654 (if (eq status
'error
)
1656 ;; I haven't started reading the final response
1658 (goto-char (point-max))
1660 (not (looking-at "^\\.\r?\n"))))))
1661 ;; I haven't read the end of the final response
1662 (nntp-accept-response)
1663 (set-buffer process-buffer
))))
1665 ;; Some nntp servers seem to have an extension to the XOVER
1666 ;; extension. On these servers, requesting an article range
1667 ;; preceding the active range does not return an error as
1668 ;; specified in the RFC. What we instead get is the NOV entry
1669 ;; for the first available article. Obviously, a client can
1670 ;; use that entry to avoid making unnecessary requests. The
1671 ;; only problem is for a client that assumes that the response
1672 ;; will always be within the requested ranage. For such a
1673 ;; client, we can get N copies of the same entry (one for each
1674 ;; XOVER command sent to the server).
1677 (goto-char (point-min))
1678 (when (re-search-forward "^[0-9][0-9][0-9] .*\n\\([0-9]+\\)" nil t
)
1679 (let ((low-limit (string-to-number
1680 (buffer-substring (match-beginning 1)
1682 (while (and articles
(<= (car articles
) low-limit
))
1683 (setq articles
(cdr articles
))))))
1686 (when nntp-server-xover
1687 (when in-process-buffer-p
1689 (goto-char (point-max))
1690 (nnheader-insert-buffer-substring process-buffer
)
1691 (set-buffer process-buffer
)
1695 ;; We remove any "." lines and status lines.
1696 (goto-char (point-min))
1697 (while (search-forward "\r" nil t
)
1699 (goto-char (point-min))
1700 (delete-matching-lines "^\\.$\\|^[1-5][0-9][0-9] ")
1705 (defun nntp-send-xover-command (beg end
&optional wait-for-reply
)
1706 "Send the XOVER command to the server."
1707 (let ((range (format "%d-%d" beg end
))
1708 (nntp-inhibit-erase t
))
1709 (if (stringp nntp-server-xover
)
1710 ;; If `nntp-server-xover' is a string, then we just send this
1713 (nntp-send-command-nodelete
1714 "\r?\n\\.\r?\n" nntp-server-xover range
)
1715 ;; We do not wait for the reply.
1716 (nntp-send-command-nodelete nil nntp-server-xover range
))
1717 (let ((commands nntp-xover-commands
))
1718 ;; `nntp-xover-commands' is a list of possible XOVER commands.
1719 ;; We try them all until we get at positive response.
1720 (while (and commands
(eq nntp-server-xover
'try
))
1721 (nntp-send-command-nodelete "\r?\n\\.\r?\n" (car commands
) range
)
1722 (with-current-buffer nntp-server-buffer
1723 (goto-char (point-min))
1724 (and (looking-at "[23]") ; No error message.
1725 ;; We also have to look at the lines. Some buggy
1726 ;; servers give back simple lines with just the
1727 ;; article number. How... helpful.
1730 ;; More text after number, or a dot.
1731 (looking-at "[0-9]+\t...\\|\\.\r?\n"))
1732 (setq nntp-server-xover
(car commands
))))
1733 (setq commands
(cdr commands
)))
1734 ;; If none of the commands worked, we disable XOVER.
1735 (when (eq nntp-server-xover
'try
)
1736 (nntp-erase-buffer nntp-server-buffer
)
1737 (setq nntp-server-xover nil
))
1738 nntp-server-xover
))))
1740 (defun nntp-find-group-and-number (&optional group
)
1743 ;; FIXME: This is REALLY FISHY: set-buffer after save-restriction?!?
1744 (set-buffer nntp-server-buffer
)
1745 (narrow-to-region (goto-char (point-min))
1746 (or (search-forward "\n\n" nil t
) (point-max)))
1747 (goto-char (point-min))
1748 ;; We first find the number by looking at the status line.
1749 (let ((number (and (looking-at "2[0-9][0-9] +\\([0-9]+\\) ")
1751 (buffer-substring (match-beginning 1)
1754 (and number
(zerop number
) (setq number nil
))
1756 ;; Then we find the group name.
1759 ;; If there is only one group in the Newsgroups
1760 ;; header, then it seems quite likely that this
1761 ;; article comes from that group, I'd say.
1762 ((and (setq newsgroups
1763 (mail-fetch-field "newsgroups"))
1764 (not (string-match "," newsgroups
)))
1766 ;; If there is more than one group in the
1767 ;; Newsgroups header, then the Xref header should
1768 ;; be filled out. We hazard a guess that the group
1769 ;; that has this article number in the Xref header
1770 ;; is the one we are looking for. This might very
1771 ;; well be wrong if this article happens to have
1772 ;; the same number in several groups, but that's
1774 ((and (setq xref
(mail-fetch-field "xref"))
1777 (format "\\([^ :]+\\):%d" number
) xref
))
1778 (match-string 1 xref
))
1781 ((and (not nntp-xref-number-is-evil
)
1782 (setq xref
(mail-fetch-field "xref"))
1785 (concat "\\(" (regexp-quote group
) "\\):\\([0-9]+\\)")
1786 "\\([^ :]+\\):\\([0-9]+\\)")
1788 (setq group
(match-string 1 xref
)
1789 number
(string-to-number (match-string 2 xref
))))
1790 ((and (setq newsgroups
1791 (mail-fetch-field "newsgroups"))
1792 (not (string-match "," newsgroups
)))
1793 (setq group newsgroups
))
1795 (t (setq group
""))))
1796 (when (string-match "\r" group
)
1797 (setq group
(substring group
0 (match-beginning 0))))
1798 (cons group number
)))))
1800 (defun nntp-wait-for-string (regexp)
1801 "Wait until string arrives in the buffer."
1802 (let ((buf (current-buffer))
1804 (goto-char (point-min))
1805 (while (and (setq proc
(get-buffer-process buf
))
1806 (memq (process-status proc
) '(open run
))
1807 (not (re-search-forward regexp nil t
)))
1808 (accept-process-output proc
0.1)
1810 (goto-char (point-min)))))
1813 ;; ==========================================================================
1814 ;; Obsolete nntp-open-* connection methods -- drv
1815 ;; ==========================================================================
1817 (defvoo nntp-open-telnet-envuser nil
1818 "*If non-nil, telnet session (client and server both) will support the ENVIRON option and not prompt for login name.")
1820 (defvoo nntp-telnet-shell-prompt
"bash\\|\$ *\r?$\\|> *\r?"
1821 "*Regular expression to match the shell prompt on the remote machine.")
1823 (defvoo nntp-rlogin-program
"rsh"
1824 "*Program used to log in on remote machines.
1825 The default is \"rsh\", but \"ssh\" is a popular alternative.")
1827 (defvoo nntp-rlogin-parameters
'("telnet" "-8" "${NNTPSERVER:=news}" "nntp")
1828 "*Parameters to `nntp-open-rlogin'.
1829 That function may be used as `nntp-open-connection-function'. In that
1830 case, this list will be used as the parameter list given to rsh.")
1832 (defvoo nntp-rlogin-user-name nil
1833 "*User name on remote system when using the rlogin connect method.")
1835 (defvoo nntp-telnet-parameters
1836 '("exec" "telnet" "-8" "${NNTPSERVER:=news}" "nntp")
1837 "*Parameters to `nntp-open-telnet'.
1838 That function may be used as `nntp-open-connection-function'. In that
1839 case, this list will be executed as a command after logging in
1842 (defvoo nntp-telnet-user-name nil
1843 "User name to log in via telnet with.")
1845 (defvoo nntp-telnet-passwd nil
1846 "Password to use to log in via telnet with.")
1848 (defun nntp-service-to-port (svc)
1850 ((integerp svc
) (number-to-string svc
))
1851 ((string-match "\\`[0-9]+\\'" svc
) svc
)
1854 (ignore-errors (insert-file-contents "/etc/services"))
1855 (goto-char (point-min))
1856 (if (re-search-forward (concat "^" (regexp-quote svc
)
1857 "[ \t]+\\([0-9]+\\)/tcp"))
1861 (defun nntp-open-telnet (buffer)
1862 (with-current-buffer buffer
1866 "nntpd" buffer nntp-telnet-command nntp-telnet-switches
))
1867 (case-fold-search t
))
1868 (when (memq (process-status proc
) '(open run
))
1869 (nntp-wait-for-string "^r?telnet")
1870 (process-send-string proc
"set escape \^X\n")
1872 ((and nntp-open-telnet-envuser nntp-telnet-user-name
)
1873 (process-send-string proc
(concat "open " "-l" nntp-telnet-user-name
1874 nntp-address
"\n")))
1876 (process-send-string proc
(concat "open " nntp-address
"\n"))))
1878 ((not nntp-open-telnet-envuser
)
1879 (nntp-wait-for-string "^\r*.?login:")
1880 (process-send-string
1882 (or nntp-telnet-user-name
1883 (setq nntp-telnet-user-name
(read-string "login: ")))
1885 (nntp-wait-for-string "^\r*.?password:")
1886 (process-send-string
1888 (or nntp-telnet-passwd
1889 (setq nntp-telnet-passwd
1890 (read-passwd "Password: ")))
1892 (nntp-wait-for-string nntp-telnet-shell-prompt
)
1893 (process-send-string
1894 proc
(concat (mapconcat 'identity nntp-telnet-parameters
" ") "\n"))
1895 (nntp-wait-for-string "^\r*20[01]")
1897 (delete-region (point-min) (point))
1898 (process-send-string proc
"\^]")
1899 (nntp-wait-for-string "^r?telnet")
1900 (process-send-string proc
"mode character\n")
1901 (accept-process-output proc
1)
1903 (goto-char (point-min))
1905 (delete-region (point) (point-max)))
1908 (defun nntp-open-rlogin (buffer)
1909 "Open a connection to SERVER using rsh."
1910 (let ((proc (if nntp-rlogin-user-name
1911 (apply 'start-process
1912 "nntpd" buffer nntp-rlogin-program
1913 nntp-address
"-l" nntp-rlogin-user-name
1914 nntp-rlogin-parameters
)
1915 (apply 'start-process
1916 "nntpd" buffer nntp-rlogin-program nntp-address
1917 nntp-rlogin-parameters
))))
1918 (with-current-buffer buffer
1919 (nntp-wait-for-string "^\r*20[01]")
1921 (delete-region (point-min) (point))
1925 ;; ==========================================================================
1926 ;; Replacements for the nntp-open-* functions -- drv
1927 ;; ==========================================================================
1929 (defun nntp-open-telnet-stream (buffer)
1930 "Open a nntp connection by telnet'ing the news server.
1931 `nntp-open-netcat-stream' is recommended in place of this function
1932 because it is more reliable.
1934 Please refer to the following variables to customize the connection:
1935 - `nntp-pre-command',
1936 - `nntp-telnet-command',
1937 - `nntp-telnet-switches',
1939 - `nntp-port-number',
1940 - `nntp-end-of-line'."
1941 (let ((command `(,nntp-telnet-command
1942 ,@nntp-telnet-switches
1944 ,(nntp-service-to-port nntp-port-number
)))
1946 (and nntp-pre-command
1947 (push nntp-pre-command command
))
1948 (setq proc
(apply 'start-process
"nntpd" buffer command
))
1949 (with-current-buffer buffer
1950 (nntp-wait-for-string "^\r*20[01]")
1952 (delete-region (point-min) (point))
1955 (defun nntp-open-via-rlogin-and-telnet (buffer)
1956 "Open a connection to an nntp server through an intermediate host.
1957 First rlogin to the remote host, and then telnet the real news server
1959 `nntp-open-via-rlogin-and-netcat' is recommended in place of this function
1960 because it is more reliable.
1962 Please refer to the following variables to customize the connection:
1963 - `nntp-pre-command',
1964 - `nntp-via-rlogin-command',
1965 - `nntp-via-rlogin-command-switches',
1966 - `nntp-via-user-name',
1967 - `nntp-via-address',
1968 - `nntp-telnet-command',
1969 - `nntp-telnet-switches',
1971 - `nntp-port-number',
1972 - `nntp-end-of-line'."
1973 (let ((command `(,nntp-via-address
1974 ,nntp-telnet-command
1975 ,@nntp-telnet-switches
))
1977 (when nntp-via-user-name
1978 (setq command
`("-l" ,nntp-via-user-name
,@command
)))
1979 (when nntp-via-rlogin-command-switches
1980 (setq command
(append nntp-via-rlogin-command-switches command
)))
1981 (push nntp-via-rlogin-command command
)
1982 (and nntp-pre-command
1983 (push nntp-pre-command command
))
1984 (setq proc
(apply 'start-process
"nntpd" buffer command
))
1985 (with-current-buffer buffer
1986 (nntp-wait-for-string "^r?telnet")
1987 (process-send-string proc
(concat "open " nntp-address
" "
1988 (nntp-service-to-port nntp-port-number
)
1990 (nntp-wait-for-string "^\r*20[01]")
1992 (delete-region (point-min) (point))
1993 (process-send-string proc
"\^]")
1994 (nntp-wait-for-string "^r?telnet")
1995 (process-send-string proc
"mode character\n")
1996 (accept-process-output proc
1)
1998 (goto-char (point-min))
2000 (delete-region (point) (point-max)))
2003 (defun nntp-open-via-rlogin-and-netcat (buffer)
2004 "Open a connection to an nntp server through an intermediate host.
2005 First rlogin to the remote host, and then connect to the real news
2006 server from there using the netcat command.
2008 Please refer to the following variables to customize the connection:
2009 - `nntp-pre-command',
2010 - `nntp-via-rlogin-command',
2011 - `nntp-via-rlogin-command-switches',
2012 - `nntp-via-user-name',
2013 - `nntp-via-address',
2014 - `nntp-netcat-command',
2015 - `nntp-netcat-switches',
2017 - `nntp-port-number'."
2018 (let ((command `(,@(when nntp-pre-command
2019 (list nntp-pre-command
))
2020 ,nntp-via-rlogin-command
2021 ,@nntp-via-rlogin-command-switches
2022 ,@(when nntp-via-user-name
2023 (list "-l" nntp-via-user-name
))
2025 ,nntp-netcat-command
2026 ,@nntp-netcat-switches
2028 ,(nntp-service-to-port nntp-port-number
))))
2029 ;; A non-nil connection type results in mightily odd behavior where
2030 ;; (process-send-string proc "\^M") ends up sending a "\n" to the
2031 ;; ssh process. --Stef
2032 ;; Also a nil connection allow ssh-askpass to work under X11.
2033 (let ((process-connection-type nil
))
2034 (apply 'start-process
"nntpd" buffer command
))))
2036 (defun nntp-open-netcat-stream (buffer)
2037 "Open a connection to an nntp server through netcat.
2038 I.e. use the `nc' command rather than Emacs's builtin networking code.
2040 Please refer to the following variables to customize the connection:
2041 - `nntp-pre-command',
2042 - `nntp-netcat-command',
2043 - `nntp-netcat-switches',
2045 - `nntp-port-number'."
2046 (let ((command `(,nntp-netcat-command
2047 ,@nntp-netcat-switches
2049 ,(nntp-service-to-port nntp-port-number
))))
2050 (and nntp-pre-command
(push nntp-pre-command command
))
2051 (let ((process-connection-type nil
)) ;See `nntp-open-via-rlogin-and-netcat'.
2052 (apply 'start-process
"nntpd" buffer command
))))
2055 (defun nntp-open-via-telnet-and-telnet (buffer)
2056 "Open a connection to an nntp server through an intermediate host.
2057 First telnet the remote host, and then telnet the real news server
2060 Please refer to the following variables to customize the connection:
2061 - `nntp-pre-command',
2062 - `nntp-via-telnet-command',
2063 - `nntp-via-telnet-switches',
2064 - `nntp-via-address',
2065 - `nntp-via-envuser',
2066 - `nntp-via-user-name',
2067 - `nntp-via-user-password',
2068 - `nntp-via-shell-prompt',
2069 - `nntp-telnet-command',
2070 - `nntp-telnet-switches',
2072 - `nntp-port-number',
2073 - `nntp-end-of-line'."
2074 (with-current-buffer buffer
2076 (let ((command `(,nntp-via-telnet-command
,@nntp-via-telnet-switches
))
2077 (case-fold-search t
)
2079 (and nntp-pre-command
(push nntp-pre-command command
))
2080 (setq proc
(apply 'start-process
"nntpd" buffer command
))
2081 (when (memq (process-status proc
) '(open run
))
2082 (nntp-wait-for-string "^r?telnet")
2083 (process-send-string proc
"set escape \^X\n")
2085 ((and nntp-via-envuser nntp-via-user-name
)
2086 (process-send-string proc
(concat "open " "-l" nntp-via-user-name
2087 nntp-via-address
"\n")))
2089 (process-send-string proc
(concat "open " nntp-via-address
2091 (when (not nntp-via-envuser
)
2092 (nntp-wait-for-string "^\r*.?login:")
2093 (process-send-string proc
2095 (or nntp-via-user-name
2096 (setq nntp-via-user-name
2097 (read-string "login: ")))
2099 (nntp-wait-for-string "^\r*.?password:")
2100 (process-send-string proc
2102 (or nntp-via-user-password
2103 (setq nntp-via-user-password
2104 (read-passwd "Password: ")))
2106 (nntp-wait-for-string nntp-via-shell-prompt
)
2107 (let ((real-telnet-command `("exec"
2108 ,nntp-telnet-command
2109 ,@nntp-telnet-switches
2111 ,(nntp-service-to-port nntp-port-number
))))
2112 (process-send-string proc
2113 (concat (mapconcat 'identity
2114 real-telnet-command
" ")
2116 (nntp-wait-for-string "^\r*20[01]")
2118 (delete-region (point-min) (point))
2119 (process-send-string proc
"\^]")
2120 (nntp-wait-for-string "^r?telnet")
2121 (process-send-string proc
"mode character\n")
2122 (accept-process-output proc
1)
2124 (goto-char (point-min))
2126 (delete-region (point) (point-max)))
2131 (defun nntp-marks-directory (server)
2132 (expand-file-name server nntp-marks-directory
))
2134 (defvar nntp-server-to-method-cache nil
2135 "Alist of servers and select methods.")
2137 (defun nntp-group-pathname (server group
&optional file
)
2138 "Return an absolute file name of FILE for GROUP on SERVER."
2139 (let ((method (cdr (assoc server nntp-server-to-method-cache
))))
2141 (push (cons server
(setq method
(or (gnus-server-to-method server
)
2142 (gnus-find-method-for-group group
))))
2143 nntp-server-to-method-cache
))
2144 (nnmail-group-pathname
2145 (mm-decode-coding-string group
2146 (inline (gnus-group-name-charset method group
)))
2147 (nntp-marks-directory server
)
2150 (defun nntp-possibly-create-directory (group server
)
2151 (let ((dir (nntp-group-pathname server group
))
2152 (file-name-coding-system nnmail-pathname-coding-system
))
2153 (unless (file-exists-p dir
)
2154 (make-directory (directory-file-name dir
) t
)
2155 (nnheader-message 5 "Creating nntp marks directory %s" dir
))))
2157 (autoload 'time-less-p
"time-date")
2159 (defun nntp-marks-changed-p (group server
)
2160 (let ((file (nntp-group-pathname server group nntp-marks-file-name
))
2161 (file-name-coding-system nnmail-pathname-coding-system
))
2162 (if (null (gnus-gethash file nntp-marks-modtime
))
2163 t
;; never looked at marks file, assume it has changed
2164 (time-less-p (gnus-gethash file nntp-marks-modtime
)
2165 (nth 5 (file-attributes file
))))))
2167 (defun nntp-save-marks (group server
)
2168 (let ((file-name-coding-system nnmail-pathname-coding-system
)
2169 (file (nntp-group-pathname server group nntp-marks-file-name
)))
2172 (nntp-possibly-create-directory group server
)
2173 (with-temp-file file
2175 (gnus-prin1 nntp-marks
)
2178 (nth 5 (file-attributes file
))
2179 nntp-marks-modtime
))
2180 (error (or (gnus-yes-or-no-p
2181 (format "Could not write to %s (%s). Continue? " file err
))
2182 (error "Cannot write to %s (%s)" file err
))))))
2184 (defun nntp-open-marks (group server
)
2185 (let ((file (nntp-group-pathname server group nntp-marks-file-name
))
2186 (file-name-coding-system nnmail-pathname-coding-system
))
2187 (if (file-exists-p file
)
2190 (gnus-sethash file
(nth 5 (file-attributes file
))
2192 (nnheader-insert-file-contents file
)
2193 (setq nntp-marks
(read (current-buffer)))
2194 (dolist (el gnus-article-unpropagated-mark-lists
)
2195 (setq nntp-marks
(gnus-remassoc el nntp-marks
))))
2196 (error (or (gnus-yes-or-no-p
2197 (format "Error reading nntp marks file %s (%s). Continuing will use marks from .newsrc.eld. Continue? " file err
))
2198 (error "Cannot read nntp marks file %s (%s)" file err
))))
2199 ;; User didn't have a .marks file. Probably first time
2200 ;; user of the .marks stuff. Bootstrap it from .newsrc.eld.
2201 (let ((info (gnus-get-info
2202 (gnus-group-prefixed-name
2204 (gnus-server-to-method (format "nntp:%s" server
)))))
2205 (decoded-name (mm-decode-coding-string
2207 (gnus-group-name-charset
2208 (gnus-server-to-method server
) group
))))
2209 (nnheader-message 7 "Bootstrapping marks for %s..." decoded-name
)
2210 (setq nntp-marks
(gnus-info-marks info
))
2211 (push (cons 'read
(gnus-info-read info
)) nntp-marks
)
2212 (dolist (el gnus-article-unpropagated-mark-lists
)
2213 (setq nntp-marks
(gnus-remassoc el nntp-marks
)))
2214 (nntp-save-marks group server
)
2215 (nnheader-message 7 "Bootstrapping marks for %s...done"
2220 ;;; nntp.el ends here