-;;; nntp.el --- NNTP (RFC977) Interface for GNU Emacs
-;; Copyright (C) 1987,88,89,90,92,93,94,95 Free Software Foundation, Inc.
+;;; nntp.el --- nntp access for Gnus
+;; Copyright (C) 1987,88,89,90,92,93,94,95,96 Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;; Code:
-(require 'rnews)
(require 'nnheader)
+(require 'nnoo)
+(eval-when-compile (require 'cl))
+
+(nnoo-declare nntp)
(eval-and-compile
- (autoload 'news-setup "rnewspost")
- (autoload 'news-reply-mode "rnewspost")
- (autoload 'nnmail-request-post-buffer "nnmail")
- (autoload 'cancel-timer "timer"))
+ (unless (fboundp 'open-network-stream)
+ (require 'tcp)))
+
+(eval-when-compile (require 'cl))
-(defvar nntp-server-hook nil
- "Hooks for the NNTP server.
+(eval-and-compile
+ (autoload 'cancel-timer "timer")
+ (autoload 'telnet "telnet" nil t)
+ (autoload 'telnet-send-input "telnet" nil t)
+ (autoload 'timezone-parse-date "timezone"))
+
+(defvoo nntp-server-hook nil
+ "*Hooks for the NNTP server.
If the kanji code of the NNTP server is different from the local kanji
code, the correct kanji code of the buffer associated with the NNTP
server must be specified as follows:
If you'd like to change something depending on the server in this
hook, use the variable `nntp-address'.")
-(defvar nntp-server-opened-hook nil
- "Hook used for sending commands to the server at startup. The
-default value is `nntp-send-mode-reader', whick makes an innd server
-spawn an nnrpd server. Another useful function to put in this hook
-might be `nntp-send-authinfo', which will prompt for a password to
-allow posting from the server. Note that this is only necessary to do
-on servers that use strict access control.")
+(defvoo nntp-server-opened-hook '(nntp-send-mode-reader)
+ "*Hook used for sending commands to the server at startup.
+The default value is `nntp-send-mode-reader', which makes an innd
+server spawn an nnrpd server. Another useful function to put in this
+hook might be `nntp-send-authinfo', which will prompt for a password
+to allow posting from the server. Note that this is only necessary to
+do on servers that use strict access control.")
(add-hook 'nntp-server-opened-hook 'nntp-send-mode-reader)
-(defvar nntp-address nil
- "The name of the NNTP server.")
+(defvoo nntp-server-action-alist
+ '(("nntpd 1\\.5\\.11t"
+ (remove-hook 'nntp-server-opened-hook 'nntp-send-mode-reader)))
+ "Alist of regexps to match on server types and actions to be taken.
+For instance, if you want Gnus to beep every time you connect
+to innd, you could say something like:
+
+\(setq nntp-server-action-alist
+ '((\"innd\" (ding))))
+
+You probably don't want to do that, though.")
+
+(defvoo nntp-open-server-function 'nntp-open-network-stream
+ "*Function used for connecting to a remote system.
+It will be called with the address of the remote system.
+
+Two pre-made functions are `nntp-open-network-stream', which is the
+default, and simply connects to some port or other on the remote
+system (see nntp-port-number). The other is `nntp-open-rlogin', which
+does an rlogin on the remote system, and then does a telnet to the
+NNTP server available there (see nntp-rlogin-parameters).")
+
+(defvoo nntp-rlogin-parameters '("telnet" "${NNTPSERVER:=localhost}" "nntp")
+ "*Parameters to `nntp-open-rlogin'.
+That function may be used as `nntp-open-server-function'. In that
+case, this list will be used as the parameter list given to rsh.")
-(defvar nntp-port-number "nntp"
- "Port number to connect to.")
+(defvoo nntp-rlogin-user-name nil
+ "*User name on remote system when using the rlogin connect method.")
-(defvar nntp-large-newsgroup 50
- "The number of the articles which indicates a large newsgroup.
+(defvoo nntp-telnet-parameters '("exec" "telnet" "-8" "${NNTPSERVER:=localhost}" "nntp")
+ "*Parameters to `nntp-open-telnet'.
+That function may be used as `nntp-open-server-function'. In that
+case, this list will be executed as a command after logging in
+via telnet.")
+
+(defvoo nntp-telnet-user-name nil
+ "User name to log in via telnet with.")
+
+(defvoo nntp-telnet-passwd nil
+ "Password to use to log in via telnet with.")
+
+(defvoo nntp-address nil
+ "*The name of the NNTP server.")
+
+(defvoo nntp-port-number "nntp"
+ "*Port number to connect to.")
+
+(defvoo nntp-end-of-line "\r\n"
+ "String to use on the end of lines when talking to the NNTP server.
+This is \"\\r\\n\" by default, but should be \"\\n\" when
+using rlogin or telnet to communicate with the server.")
+
+(defvoo nntp-large-newsgroup 50
+ "*The number of the articles which indicates a large newsgroup.
If the number of the articles is greater than the value, verbose
messages will be shown to indicate the current status.")
-(defvar nntp-buggy-select (memq system-type '(fujitsu-uts))
- "t if your select routine is buggy.
+(defvoo nntp-buggy-select (memq system-type '(fujitsu-uts))
+ "*t if your select routine is buggy.
If the select routine signals error or fall into infinite loop while
waiting for the server response, the variable must be set to t. In
case of Fujitsu UTS, it is set to T since `accept-process-output'
doesn't work properly.")
-(defvar nntp-maximum-request 400
- "The maximum number of the requests sent to the NNTP server at one time.
+(defvoo nntp-maximum-request 400
+ "*The maximum number of the requests sent to the NNTP server at one time.
If Emacs hangs up while retrieving headers, set the variable to a
lower value.")
-(defvar nntp-debug-read 10000
- "Display '...' every 10Kbytes of a message being received if it is non-nil.
+(defvoo nntp-debug-read 10000
+ "*Display '...' every 10Kbytes of a message being received if it is non-nil.
If it is a number, dots are displayed per the number.")
-(defvar nntp-nov-is-evil nil
- "If non-nil, nntp will never attempt to use XOVER when talking to the server.")
+(defvoo nntp-nov-is-evil nil
+ "*If non-nil, nntp will never attempt to use XOVER when talking to the server.")
-(defvar nntp-xover-commands '("XOVER" "XOVERVIEW")
- "List of strings that are used as commands to fetch NOV lines from a server.
+(defvoo nntp-xover-commands '("XOVER" "XOVERVIEW")
+ "*List of strings that are used as commands to fetch NOV lines from a server.
The strings are tried in turn until a positive response is gotten. If
none of the commands are successful, nntp will just grab headers one
by one.")
-(defvar nntp-connection-timeout nil
- "Number of seconds to wait before an nntp connection times out.
+(defvoo nntp-nov-gap 20
+ "*Maximum allowed gap between two articles.
+If the gap between two consecutive articles is bigger than this
+variable, split the XOVER request into two requests.")
+
+(defvoo nntp-connection-timeout nil
+ "*Number of seconds to wait before an nntp connection times out.
+If this variable is nil, which is the default, no timers are set.")
+
+(defvoo nntp-command-timeout nil
+ "*Number of seconds to wait for a response when sending a command.
If this variable is nil, which is the default, no timers are set.")
-(defvar nntp-news-default-headers nil
- "If non-nil, override `mail-default-headers' when posting news.")
+(defvoo nntp-retry-on-break nil
+ "*If non-nil, re-send the command when the user types `C-g'.")
+
+(defvoo nntp-news-default-headers nil
+ "*If non-nil, override `mail-default-headers' when posting news.")
+
+(defvoo nntp-prepare-server-hook nil
+ "*Hook run before a server is opened.
+If can be used to set up a server remotely, for instance. Say you
+have an account at the machine \"other.machine\". This machine has
+access to an NNTP server that you can't access locally. You could
+then use this hook to rsh to the remote machine and start a proxy NNTP
+server there that you can connect to.")
+
+(defvoo nntp-async-number 5
+ "*How many articles should be prefetched when in asynchronous mode.")
+
+(defvoo nntp-warn-about-losing-connection t
+ "*If non-nil, beep when a server closes connection.")
\f
(defvar nntp-server-buffer nil
"Buffer associated with the NNTP server process.")
-(defvar nntp-server-process nil
+(defvoo nntp-server-process nil
"The NNTP server process.
You'd better not use this variable in NNTP front-end program, but
instead use `nntp-server-buffer'.")
-(defvar nntp-status-string nil
- "Save the server response message.
-You'd better not use this variable in NNTP front-end program but
-instead call function `nntp-status-message' to get status message.")
+(defvoo nntp-status-string nil
+ "Save the server response message.")
-(defvar nntp-server-xover t)
-(defvar nntp-server-list-active-group t)
-(defvar nntp-current-group "")
+(defvar nntp-opened-connections nil
+ "All (possibly) opened connections.")
-\f
-(defvar nntp-current-server nil)
-(defvar nntp-server-alist nil)
-(defvar nntp-server-variables
- (list
- (list 'nntp-server-hook nntp-server-hook)
- (list 'nntp-server-opened-hook nntp-server-opened-hook)
- (list 'nntp-port-number nntp-port-number)
- (list 'nntp-address nntp-address)
- (list 'nntp-large-newsgroup nntp-large-newsgroup)
- (list 'nntp-buggy-select nntp-buggy-select)
- (list 'nntp-maximum-request nntp-maximum-request)
- (list 'nntp-debug-read nntp-debug-read)
- (list 'nntp-nov-is-evil nntp-nov-is-evil)
- (list 'nntp-xover-commands nntp-xover-commands)
- (list 'nntp-connection-timeout nntp-connection-timeout)
- (list 'nntp-news-default-headers nntp-news-default-headers)
- '(nntp-server-process nil)
- '(nntp-status-string nil)
- '(nntp-server-xover t)
- '(nntp-server-list-active-group t)
- '(nntp-current-group "")))
+(defvoo nntp-server-xover 'try)
+(defvoo nntp-server-list-active-group 'try)
+(defvoo nntp-current-group "")
+(defvoo nntp-server-type nil)
+
+(defvoo nntp-async-process nil)
+(defvoo nntp-async-buffer nil)
+(defvoo nntp-async-articles nil)
+(defvoo nntp-async-fetched nil)
+(defvoo nntp-async-group-alist nil)
\f
-;;; Interface funtions.
+;;; Interface functions.
+
+(nnoo-define-basics nntp)
-(defun nntp-retrieve-headers (sequence &optional newsgroup server)
- "Retrieve the headers to the articles in SEQUENCE."
- (nntp-possibly-change-server newsgroup server)
+(deffoo nntp-retrieve-headers (articles &optional group server fetch-old)
+ "Retrieve the headers of ARTICLES."
+ (nntp-possibly-change-server group server)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(if (and (not gnus-nov-is-evil)
(not nntp-nov-is-evil)
- (nntp-retrieve-headers-with-xover sequence))
+ (nntp-retrieve-headers-with-xover articles fetch-old))
+ ;; We successfully retrieved the headers via XOVER.
'nov
- (let ((number (length sequence))
+ ;; XOVER didn't work, so we do it the hard, slow and inefficient
+ ;; way.
+ (let ((number (length articles))
(count 0)
(received 0)
+ (message-log-max nil)
(last-point (point-min)))
;; Send HEAD command.
- (while sequence
- (nntp-send-strings-to-server "HEAD" (car sequence))
- (setq sequence (cdr sequence))
- (setq count (1+ count))
- ;; Every 400 header requests we have to read stream in order
- ;; to avoid deadlock.
- (if (or (null sequence) ;All requests have been sent.
- (zerop (% count nntp-maximum-request)))
- (progn
- (accept-process-output)
- (while (progn
- (goto-char last-point)
- ;; Count replies.
- (while (re-search-forward "^[0-9]" nil t)
- (setq received (1+ received)))
- (setq last-point (point))
- (< received count))
- ;; If number of headers is greater than 100, give
- ;; informative messages.
- (and (numberp nntp-large-newsgroup)
- (> number nntp-large-newsgroup)
- (zerop (% received 20))
- (message "NNTP: Receiving headers... %d%%"
- (/ (* received 100) number)))
- (nntp-accept-response)))))
+ (while articles
+ (nntp-send-strings-to-server
+ "HEAD" (if (numberp (car articles))
+ (int-to-string (car articles))
+ ;; `articles' is either a list of article numbers
+ ;; or a list of article IDs.
+ (car articles)))
+ (setq articles (cdr articles)
+ count (1+ count))
+ ;; Every 400 header requests we have to read the stream in
+ ;; order to avoid deadlocks.
+ (when (or (null articles) ;All requests have been sent.
+ (zerop (% count nntp-maximum-request)))
+ (nntp-accept-response)
+ (while (progn
+ (goto-char last-point)
+ ;; Count replies.
+ (while (re-search-forward "^[0-9]" nil t)
+ (setq received (1+ received)))
+ (setq last-point (point))
+ (< received count))
+ ;; If number of headers is greater than 100, give
+ ;; informative messages.
+ (and (numberp nntp-large-newsgroup)
+ (> number nntp-large-newsgroup)
+ (zerop (% received 20))
+ (nnheader-message 7 "NNTP: Receiving headers... %d%%"
+ (/ (* received 100) number)))
+ (nntp-accept-response))))
;; Wait for text of last command.
(goto-char (point-max))
(re-search-backward "^[0-9]" nil t)
- (if (looking-at "^[23]")
- (while (progn
- (goto-char (- (point-max) 3))
- (not (looking-at "^\\.\r$")))
- (nntp-accept-response)))
+ (when (looking-at "^[23]")
+ (while (progn
+ (goto-char (- (point-max) 3))
+ (not (looking-at "^\\.\r?\n")))
+ (nntp-accept-response)))
(and (numberp nntp-large-newsgroup)
(> number nntp-large-newsgroup)
- (message "NNTP: Receiving headers... done"))
+ (nnheader-message 7 "NNTP: Receiving headers...done"))
- ;; Now all of replies are received.
- (setq received number)
- ;; First, fold continuation lines.
+ ;; Now all of replies are received. Fold continuation lines.
+ (nnheader-fold-continuation-lines)
+ ;; Remove all "\r"'s.
(goto-char (point-min))
- (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
- (replace-match " " t t))
- ;; Remove all "\r"'s
- (goto-char (point-min))
- (while (re-search-forward "\r" nil t)
+ (while (search-forward "\r" nil t)
(replace-match "" t t))
'headers))))
-(defun nntp-open-server (server &optional defs)
- (nnheader-init-server-buffer)
+
+(deffoo nntp-retrieve-groups (groups &optional server)
+ "Retrieve group info on GROUPS."
+ (nntp-possibly-change-server nil server)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ ;; The first time this is run, this variable is `try'. So we
+ ;; try.
+ (when (eq nntp-server-list-active-group 'try)
+ (nntp-try-list-active (car groups)))
+ (erase-buffer)
+ (let ((count 0)
+ (received 0)
+ (last-point (point-min))
+ (command (if nntp-server-list-active-group "LIST ACTIVE" "GROUP")))
+ (while groups
+ ;; Send the command to the server.
+ (nntp-send-strings-to-server command (car groups))
+ (setq groups (cdr groups))
+ (setq count (1+ count))
+ ;; Every 400 requests we have to read the stream in
+ ;; order to avoid deadlocks.
+ (when (or (null groups) ;All requests have been sent.
+ (zerop (% count nntp-maximum-request)))
+ (nntp-accept-response)
+ (while (progn
+ (goto-char last-point)
+ ;; Count replies.
+ (while (re-search-forward "^[0-9]" nil t)
+ (setq received (1+ received)))
+ (setq last-point (point))
+ (< received count))
+ (nntp-accept-response))))
+
+ ;; Wait for the reply from the final command.
+ (when nntp-server-list-active-group
+ (goto-char (point-max))
+ (re-search-backward "^[0-9]" nil t)
+ (when (looking-at "^[23]")
+ (while (progn
+ (goto-char (- (point-max) 3))
+ (not (looking-at "^\\.\r?\n")))
+ (nntp-accept-response))))
+
+ ;; Now all replies are received. We remove CRs.
+ (goto-char (point-min))
+ (while (search-forward "\r" nil t)
+ (replace-match "" t t))
+
+ (if (not nntp-server-list-active-group)
+ 'group
+ ;; We have read active entries, so we just delete the
+ ;; superfluos gunk.
+ (goto-char (point-min))
+ (while (re-search-forward "^[.2-5]" nil t)
+ (delete-region (match-beginning 0)
+ (progn (forward-line 1) (point))))
+ 'active))))
+
+(deffoo nntp-open-server (server &optional defs connectionless)
+ "Open the virtual server SERVER.
+If CONNECTIONLESS is non-nil, don't attempt to connect to any physical
+servers."
+ ;; Called with just a port number as the defs.
+ (when (or (stringp (car defs))
+ (numberp (car defs)))
+ (setq defs `((nntp-port-number ,(car defs)))))
+ (unless (assq 'nntp-address defs)
+ (setq defs (append defs `((nntp-address ,server)))))
+ (nnoo-change-server 'nntp server defs)
(if (nntp-server-opened server)
t
- (or (assq 'nntp-address defs)
- (setq defs (append defs (list (list 'nntp-address server)))))
- (if (and nntp-current-server
- (not (equal server nntp-current-server)))
- (setq nntp-server-alist
- (cons (list nntp-current-server
- (nnheader-save-variables nntp-server-variables))
- nntp-server-alist)))
- (let ((state (assoc server nntp-server-alist)))
- (if state
- (progn
- (nnheader-restore-variables (nth 1 state))
- (setq nntp-server-alist (delq state nntp-server-alist)))
- (nnheader-set-init-variables nntp-server-variables defs)))
- (setq nntp-current-server server)
- (nntp-open-server-semi-internal nntp-address)))
-
-(defun nntp-close-server (&optional server)
+ (or (nntp-server-opened server)
+ connectionless
+ (prog2
+ (run-hooks 'nntp-prepare-server-hook)
+ (nntp-open-server-semi-internal nntp-address nntp-port-number)
+ (nnheader-insert "")))))
+
+(deffoo nntp-close-server (&optional server)
"Close connection to SERVER."
- (nntp-possibly-change-server nil server)
+ (nntp-possibly-change-server nil server t)
(unwind-protect
(progn
;; Un-set default sentinel function before closing connection.
(process-sentinel nntp-server-process))
(set-process-sentinel nntp-server-process nil))
;; We cannot send QUIT command unless the process is running.
- (if (nntp-server-opened)
- (nntp-send-command nil "QUIT")))
+ (when (nntp-server-opened server)
+ (nntp-send-command nil "QUIT")
+ ;; Give the QUIT time to arrive.
+ (sleep-for 1)))
(nntp-close-server-internal server)))
-(fset 'nntp-request-quit (symbol-function 'nntp-close-server))
-
-(defun nntp-request-close ()
+(deffoo nntp-request-close ()
"Close all server connections."
(let (proc)
- (while nntp-server-alist
- (setq proc (nth 1 (assq 'nntp-server-process (car nntp-server-alist))))
- (and proc (delete-process proc))
- (setq nntp-server-alist (cdr nntp-server-alist)))
- (setq nntp-current-server nil)))
-
-(defun nntp-server-opened (&optional server)
+ (while nntp-opened-connections
+ (when (setq proc (pop nntp-opened-connections))
+ ;; Un-set default sentinel function before closing connection.
+ (when (eq 'nntp-default-sentinel (process-sentinel proc))
+ (set-process-sentinel proc nil))
+ (condition-case ()
+ (process-send-string proc (concat "QUIT" nntp-end-of-line))
+ (error nil))
+ ;; Give the QUIT time to reach the server before we close
+ ;; down the process.
+ (sleep-for 1)
+ (delete-process proc)))
+ (and nntp-async-buffer
+ (buffer-name nntp-async-buffer)
+ (kill-buffer nntp-async-buffer))
+ (let ((alist (cddr (assq 'nntp nnoo-state-alist)))
+ entry)
+ (while (setq entry (pop alist))
+ (and (setq proc (cdr (assq 'nntp-async-buffer entry)))
+ (buffer-name proc)
+ (kill-buffer proc))))
+ (nnoo-close-server 'nntp)
+ (setq nntp-async-group-alist nil
+ nntp-async-articles nil)))
+
+(deffoo nntp-server-opened (&optional server)
"Say whether a connection to SERVER has been opened."
- (and (equal server nntp-current-server)
+ (and (nnoo-current-server-p 'nntp server)
nntp-server-buffer
(buffer-name nntp-server-buffer)
nntp-server-process
(memq (process-status nntp-server-process) '(open run))))
-(defun nntp-status-message (&optional server)
+(deffoo nntp-status-message (&optional server)
"Return server status as a string."
(if (and nntp-status-string
;; NNN MESSAGE
nntp-status-string))
(substring nntp-status-string (match-beginning 1) (match-end 1))
;; Empty message if nothing.
- nntp-status-string))
+ (or nntp-status-string "")))
-(defun nntp-request-article (id &optional newsgroup server buffer)
- "Request article ID (message-id or number)."
- (nntp-possibly-change-server newsgroup server)
- (unwind-protect
- (progn
- (if buffer (set-process-buffer nntp-server-process buffer))
- (let ((nntp-server-buffer (or buffer nntp-server-buffer))
- (id (or (and (numberp id) (int-to-string id)) id)))
- ;; If NEmacs, end of message may look like: "\256\215" (".^M")
- (prog1
- (nntp-send-command "^\\.\r$" "ARTICLE" id)
- (nntp-decode-text))))
- (if buffer (set-process-buffer nntp-server-process nntp-server-buffer))))
-
-(defun nntp-request-body (id &optional newsgroup server)
- "Request body of article ID (message-id or number)."
- (nntp-possibly-change-server newsgroup server)
+(deffoo nntp-request-article (id &optional group server buffer)
+ "Request article ID (Message-ID or number)."
+ (nntp-possibly-change-server group server)
+
+ (let (found)
+
+ ;; First we see whether we can get the article from the async buffer.
+ (when (and (numberp id)
+ nntp-async-articles
+ (memq id nntp-async-fetched))
+ (save-excursion
+ (set-buffer nntp-async-buffer)
+ (let ((opoint (point))
+ (art (if (numberp id) (int-to-string id) id))
+ beg end)
+ (when (and (or (re-search-forward (concat "^2.. +" art) nil t)
+ (progn
+ (goto-char (point-min))
+ (re-search-forward (concat "^2.. +" art) opoint t)))
+ (progn
+ (beginning-of-line)
+ (setq beg (point)
+ end (re-search-forward "^\\.\r?\n" nil t))))
+ (setq found t)
+ (save-excursion
+ (set-buffer (or buffer nntp-server-buffer))
+ (erase-buffer)
+ (insert-buffer-substring nntp-async-buffer beg end)
+ (let ((nntp-server-buffer (current-buffer)))
+ (nntp-decode-text)))
+ (delete-region beg end)
+ (when nntp-async-articles
+ (nntp-async-fetch-articles id))))))
+
+ (if found
+ id
+ ;; The article was not in the async buffer, so we fetch it now.
+ (unwind-protect
+ (progn
+ (if buffer (set-process-buffer nntp-server-process buffer))
+ (let ((nntp-server-buffer (or buffer nntp-server-buffer))
+ (art (or (and (numberp id) (int-to-string id)) id)))
+ (prog1
+ (and (nntp-send-command
+ ;; A bit odd regexp to ensure working over rlogin.
+ "^\\.\r?\n" "ARTICLE" art)
+ (if (numberp id)
+ (cons nntp-current-group id)
+ ;; We find out what the article number was.
+ (nntp-find-group-and-number)))
+ (nntp-decode-text)
+ (and nntp-async-articles (nntp-async-fetch-articles id)))))
+ (when buffer
+ (set-process-buffer nntp-server-process nntp-server-buffer))))))
+
+(deffoo nntp-request-body (id &optional group server)
+ "Request body of article ID (Message-ID or number)."
+ (nntp-possibly-change-server group server)
(prog1
;; If NEmacs, end of message may look like: "\256\215" (".^M")
(nntp-send-command
- "^\\.\r$" "BODY" (or (and (numberp id) (int-to-string id)) id))
+ "^\\.\r?\n" "BODY" (or (and (numberp id) (int-to-string id)) id))
(nntp-decode-text)))
-(defun nntp-request-head (id &optional newsgroup server)
- "Request head of article ID (message-id or number)."
- (nntp-possibly-change-server newsgroup server)
+(deffoo nntp-request-head (id &optional group server)
+ "Request head of article ID (Message-ID or number)."
+ (nntp-possibly-change-server group server)
(prog1
- (nntp-send-command
- "^\\.\r$" "HEAD" (or (and (numberp id) (int-to-string id)) id))
- (nntp-decode-text)))
+ (when (nntp-send-command
+ "^\\.\r?\n" "HEAD" (if (numberp id) (int-to-string id) id))
+ (if (numberp id) id
+ ;; We find out what the article number was.
+ (nntp-find-group-and-number)))
+ (nntp-decode-text)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (nnheader-fold-continuation-lines))))
-(defun nntp-request-stat (id &optional newsgroup server)
- "Request STAT of article ID (message-id or number)."
- (nntp-possibly-change-server newsgroup server)
+(deffoo nntp-request-stat (id &optional group server)
+ "Request STAT of article ID (Message-ID or number)."
+ (nntp-possibly-change-server group server)
(nntp-send-command
- "^[23].*\r$" "STAT" (or (and (numberp id) (int-to-string id)) id)))
+ "^[23].*\r?\n" "STAT" (or (and (numberp id) (int-to-string id)) id)))
-(defun nntp-request-group (group &optional server dont-check)
+(deffoo nntp-request-type (group &optional article)
+ 'news)
+
+(deffoo nntp-request-group (group &optional server dont-check)
"Select GROUP."
- (if dont-check
- (nntp-send-command "^.*\r$" "GROUP" group)
- (if nntp-server-list-active-group
- (save-excursion
- (nntp-list-active-group group server)
- (set-buffer nntp-server-buffer)
- (goto-char (point-min))
- ;; We look at the output from `nntp-list-active-group' to
- ;; see whether the server supports this command. If it
- ;; does, we transform the output.
- (cond ((looking-at "2[0-9]+")
- (forward-line 1)
- (if (looking-at "[^ ]+[ \t]+\\([0-9]\\)[ \t]+\\([0-9]\\)")
- (let ((end (progn (goto-char (match-beginning 1))
- (read (current-buffer))))
- (beg (read (current-buffer))))
- (and (> beg end)
- (setq end 0
- beg 0))
- (erase-buffer)
- (insert (format "211 %s %d %d %d\n"
- group (max (- (1+ end) beg) 0)
- beg end)))))
- ;; The server does not support the command.
- ((looking-at "5[0-9]+")
- (setq nntp-server-list-active-group nil)
- (nntp-send-command "^.*\r$" "GROUP" group))
- ;; The server supports it, but the group doesn't
- ;; exist.
- ((looking-at "4[0-9]+")
- (erase-buffer)
- nil)))
- (nntp-send-command "^.*\r$" "GROUP" group))))
-
-(defun nntp-list-active-group (group &optional server)
- (nntp-send-command "^.*\r$" "LIST ACTIVE" group))
-
-(defun nntp-request-group-description (group &optional server)
- "Get description of GROUP."
- (if (nntp-possibly-change-server nil server)
- (prog1
- (nntp-send-command "^.*\r$" "XGTITLE" group)
- (nntp-decode-text))))
-
-(defun nntp-close-group (group &optional server)
+ (nntp-possibly-change-server nil server)
+ (setq nntp-current-group
+ (when (nntp-send-command "^2.*\r?\n" "GROUP" group)
+ group)))
+
+(deffoo nntp-request-asynchronous (group &optional server articles)
+ "Enable pre-fetch in GROUP."
+ (when nntp-async-articles
+ (nntp-async-request-group group))
+ (when nntp-async-number
+ (if (not (or (nntp-async-server-opened)
+ (nntp-async-open-server)))
+ ;; Couldn't open the second connection
+ (progn
+ (message "Can't open second connection to %s" nntp-address)
+ (ding)
+ (setq nntp-async-articles nil)
+ (sit-for 2))
+ ;; We opened the second connection (or it was opened already).
+ (setq nntp-async-articles articles)
+ (setq nntp-async-fetched nil)
+ ;; Clear any old data.
+ (save-excursion
+ (set-buffer nntp-async-buffer)
+ (erase-buffer))
+ ;; Select the correct current group on this server.
+ (nntp-async-send-strings "GROUP" group)
+ t)))
+
+(deffoo nntp-list-active-group (group &optional server)
+ "Return the active info on GROUP (which can be a regexp."
+ (nntp-possibly-change-server group server)
+ (nntp-send-command "^.*\r?\n" "LIST ACTIVE" group))
+
+(deffoo nntp-request-group-description (group &optional server)
+ "Get the description of GROUP."
+ (nntp-possibly-change-server nil server)
+ (prog1
+ (nntp-send-command "^.*\r?\n" "XGTITLE" group)
+ (nntp-decode-text)))
+
+(deffoo nntp-close-group (group &optional server)
+ "Close GROUP."
+ (setq nntp-current-group nil)
t)
-(defun nntp-request-list (&optional server)
- "List active groups."
+(deffoo nntp-request-list (&optional server)
+ "List all active groups."
(nntp-possibly-change-server nil server)
(prog1
- (nntp-send-command "^\\.\r$" "LIST")
+ (nntp-send-command "^\\.\r?\n" "LIST")
(nntp-decode-text)))
-(defun nntp-request-list-newsgroups (&optional server)
- "List groups."
+(deffoo nntp-request-list-newsgroups (&optional server)
+ "Get descriptions on all groups on SERVER."
(nntp-possibly-change-server nil server)
(prog1
- (nntp-send-command "^\\.\r$" "LIST NEWSGROUPS")
+ (nntp-send-command "^\\.\r?\n" "LIST NEWSGROUPS")
(nntp-decode-text)))
-(defun nntp-request-newgroups (date &optional server)
- "List new groups."
+(deffoo nntp-request-newgroups (date &optional server)
+ "List groups that have arrived since DATE."
(nntp-possibly-change-server nil server)
(let* ((date (timezone-parse-date date))
(time-string
(substring
(aref date 3) 3 5) (substring (aref date 3) 6 8))))
(prog1
- (nntp-send-command "^\\.\r$" "NEWGROUPS" time-string)
+ (nntp-send-command "^\\.\r?\n" "NEWGROUPS" time-string)
(nntp-decode-text))))
-(defun nntp-request-list-distributions (&optional server)
+(deffoo nntp-request-list-distributions (&optional server)
"List distributions."
(nntp-possibly-change-server nil server)
(prog1
- (nntp-send-command "^\\.\r$" "LIST DISTRIBUTIONS")
+ (nntp-send-command "^\\.\r?\n" "LIST DISTRIBUTIONS")
(nntp-decode-text)))
-(defun nntp-request-last (&optional newsgroup server)
+(deffoo nntp-request-last (&optional group server)
"Decrease the current article pointer."
- (nntp-possibly-change-server newsgroup server)
- (nntp-send-command "^[23].*\r$" "LAST"))
+ (nntp-possibly-change-server group server)
+ (nntp-send-command "^[23].*\r?\n" "LAST"))
-(defun nntp-request-next (&optional newsgroup server)
+(deffoo nntp-request-next (&optional group server)
"Advance the current article pointer."
- (nntp-possibly-change-server newsgroup server)
- (nntp-send-command "^[23].*\r$" "NEXT"))
+ (nntp-possibly-change-server group server)
+ (nntp-send-command "^[23].*\r?\n" "NEXT"))
-(defun nntp-request-post (&optional server)
+(deffoo nntp-request-post (&optional server)
"Post the current buffer."
(nntp-possibly-change-server nil server)
- (if (nntp-send-command "^[23].*\r$" "POST")
- (progn
- (nntp-encode-text)
- (nntp-send-region-to-server (point-min) (point-max))
- ;; 1.2a NNTP's post command is buggy. "^M" (\r) is not
- ;; appended to end of the status message.
- (nntp-wait-for-response "^[23].*$"))))
-
-(defun nntp-request-post-buffer
- (post group subject header article-buffer info follow-to respect-poster)
- "Request a buffer suitable for composing an article.
-If POST, this is an original article; otherwise it's a followup.
-GROUP is the group to be posted to, the article should have subject
-SUBJECT. HEADER is a Gnus header vector. ARTICLE-BUFFER contains the
-article being followed up. INFO is a Gnus info list. If FOLLOW-TO,
-post to this group instead. If RESPECT-POSTER, heed the special
-\"poster\" value of the Followup-to header."
- (if (assq 'to-address (nth 4 info))
- (nnmail-request-post-buffer
- post group subject header article-buffer info follow-to respect-poster)
- (let ((mail-default-headers
- (or nntp-news-default-headers mail-default-headers))
- from date to followup-to newsgroups message-of
- references distribution message-id)
- (save-excursion
- (set-buffer (get-buffer-create "*post-news*"))
- (news-reply-mode)
- (if (and (buffer-modified-p)
- (> (buffer-size) 0)
- (not (y-or-n-p "Unsent article being composed; erase it? ")))
- ()
- (erase-buffer)
- (if post
- (news-setup nil subject nil group nil)
- (save-excursion
- (set-buffer article-buffer)
- (goto-char (point-min))
- (narrow-to-region (point-min)
- (progn (search-forward "\n\n") (point)))
- (setq from (header-from header))
- (setq date (header-date header))
- (and from
- (let ((stop-pos
- (string-match " *at \\| *@ \\| *(\\| *<" from)))
- (setq
- message-of
- (concat (if stop-pos (substring from 0 stop-pos) from)
- "'s message of " date))))
- (setq subject (or subject (header-subject header)))
- (or (string-match "^[Rr][Ee]:" subject)
- (setq subject (concat "Re: " subject)))
- (setq followup-to (mail-fetch-field "followup-to"))
- (if (or (null respect-poster) ;Ignore followup-to: field.
- (string-equal "" followup-to) ;Bogus header.
- (string-equal "poster" followup-to)) ;Poster
- (setq followup-to nil))
- (setq newsgroups
- (or follow-to followup-to (mail-fetch-field "newsgroups")))
- (setq references (header-references header))
- (setq distribution (mail-fetch-field "distribution"))
- ;; Remove bogus distribution.
- (and (stringp distribution)
- (string-match "world" distribution)
- (setq distribution nil))
- (setq message-id (header-id header))
- (widen))
- (setq news-reply-yank-from from)
- (setq news-reply-yank-message-id message-id)
- (news-setup to subject message-of
- (if (stringp newsgroups) newsgroups "")
- article-buffer)
- (if (and newsgroups (listp newsgroups))
- (progn
- (goto-char (point-min))
- (while newsgroups
- (insert (car (car newsgroups)) ": "
- (cdr (car newsgroups)) "\n")
- (setq newsgroups (cdr newsgroups)))))
- ;; Fold long references line to follow RFC1036.
- (mail-position-on-field "References")
- (let ((begin (- (point) (length "References: ")))
- (fill-column 79)
- (fill-prefix "\t"))
- (if references (insert references))
- (if (and references message-id) (insert " "))
- (if message-id (insert message-id))
- ;; The region must end with a newline to fill the region
- ;; without inserting extra newline.
- (fill-region-as-paragraph begin (1+ (point))))
- (if distribution
- (progn
- (mail-position-on-field "Distribution")
- (insert distribution)))))
- (current-buffer)))))
+ (when (nntp-send-command "^[23].*\r?\n" "POST")
+ (nnheader-insert "")
+ (nntp-encode-text)
+ (nntp-send-region-to-server (point-min) (point-max))
+ ;; 1.2a NNTP's post command is buggy. "^M" (\r) is not
+ ;; appended to end of the status message.
+ (nntp-wait-for-response "^[23].*\n")))
;;; Internal functions.
This function is supposed to be called from `nntp-server-opened-hook'.
It will make innd servers spawn an nnrpd process to allow actual article
reading."
- (nntp-send-command "^.*\r$" "MODE READER"))
+ (nntp-send-command "^.*\r?\n" "MODE READER"))
+
+(defun nntp-send-nosy-authinfo ()
+ "Send the AUTHINFO to the nntp server.
+This function is supposed to be called from `nntp-server-opened-hook'.
+It will prompt for a password."
+ (nntp-send-command "^.*\r?\n" "AUTHINFO USER"
+ (read-string "NNTP user name: "))
+ (nntp-send-command "^.*\r?\n" "AUTHINFO PASS"
+ (read-string "NNTP password: ")))
(defun nntp-send-authinfo ()
"Send the AUTHINFO to the nntp server.
This function is supposed to be called from `nntp-server-opened-hook'.
It will prompt for a password."
- (nntp-send-command "^.*\r$" "AUTHINFO USER" (user-login-name))
- (nntp-send-command "^.*\r$" "AUTHINFO PASS" (read-string "NNTP password: ")))
+ (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name))
+ (nntp-send-command "^.*\r?\n" "AUTHINFO PASS"
+ (read-string "NNTP password: ")))
+
+(defun nntp-send-authinfo-from-file ()
+ "Send the AUTHINFO to the nntp server.
+This function is supposed to be called from `nntp-server-opened-hook'.
+It will prompt for a password."
+ (when (file-exists-p "~/.nntp-authinfo")
+ (save-excursion
+ (set-buffer (get-buffer-create " *authinfo*"))
+ (buffer-disable-undo (current-buffer))
+ (erase-buffer)
+ (insert-file-contents "~/.nntp-authinfo")
+ (goto-char (point-min))
+ (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name))
+ (nntp-send-command
+ "^.*\r?\n" "AUTHINFO PASS"
+ (buffer-substring (point) (progn (end-of-line) (point))))
+ (kill-buffer (current-buffer)))))
(defun nntp-default-sentinel (proc status)
"Default sentinel function for NNTP server process."
- (let ((servers nntp-server-alist))
+ (let ((servers (cddr (assq 'nntp nnoo-state-alist)))
+ server)
;; Go through the alist of server names and find the name of the
;; server that the process that sent the signal is connected to.
;; If you get my drift.
- (while (and servers
- (not (equal proc (nth 1 (assq 'nntp-server-process
+ (if (equal proc nntp-server-process)
+ (setq server nntp-address)
+ (while (and servers
+ (not (equal proc (cdr (assq 'nntp-server-process
(car servers))))))
- (setq servers (cdr servers)))
- (message "nntp: Connection closed to server %s."
- (or (car (car servers)) "(none)"))
- (ding)))
+ (setq servers (cdr servers)))
+ (setq server (caar servers)))
+ (when (and server
+ nntp-warn-about-losing-connection)
+ (nnheader-message 3 "nntp: Connection closed to server %s" server)
+ (setq nntp-current-group "")
+ (ding))))
(defun nntp-kill-connection (server)
- (let ((proc (nth 1 (assq 'nntp-server-process
- (assoc server nntp-server-alist)))))
- (and proc (delete-process (process-name proc)))
+ "Choke the connection to SERVER."
+ (let ((proc (cdr (assq 'nntp-server-process
+ (assoc server (cddr
+ (assq 'nntp nnoo-state-alist)))))))
+ (when proc
+ (delete-process (process-name proc)))
(nntp-close-server server)
- (setq nntp-status-string
- (message "Connection timed out to server %s." server))
- (ding)))
+ (nnheader-report
+ 'nntp (message "Connection timed out to server %s" server))
+ (ding)
+ (sit-for 1)))
;; Encoding and decoding of NNTP text.
(goto-char (point-max))
(or (bolp) (insert "\n"))
;; Delete status line.
- (goto-char (point-min))
- (delete-region (point) (progn (forward-line 1) (point)))
- ;; Delete `^M' at the end of lines.
- (while (not (eobp))
- (end-of-line)
- (and (= (preceding-char) ?\r)
- (delete-char -1))
- (forward-line 1))
+ (delete-region (goto-char (point-min)) (progn (forward-line 1) (point)))
+ ;; Delete `^M's.
+ (while (search-forward "\r" nil t)
+ (replace-match "" t t))
;; Delete `.' at end of the buffer (end of text mark).
(goto-char (point-max))
(forward-line -1)
- (if (looking-at "^\\.$")
- (delete-region (point) (progn (forward-line 1) (point))))
+ (when (looking-at "^\\.\n")
+ (delete-region (point) (progn (forward-line 1) (point))))
;; Replace `..' at beginning of line with `.'.
(goto-char (point-min))
;; (replace-regexp "^\\.\\." ".")
1. Insert `.' at beginning of line.
2. Insert `.' at end of buffer (end of text mark)."
(save-excursion
- ;; Insert newline at end of buffer.
- (goto-char (point-max))
- (or (bolp) (insert "\n"))
;; Replace `.' at beginning of line with `..'.
(goto-char (point-min))
- ;; (replace-regexp "^\\." "..")
- (while (search-forward "\n." nil t)
+ (while (re-search-forward "^\\." nil t)
(insert "."))
+ (goto-char (point-max))
+ ;; Insert newline at end of buffer.
+ (or (bolp) (insert "\n"))
+ ;(goto-char (point-min))
+ ;(while (not (eobp))
+ ; (end-of-line)
+ ; (insert "\r")
+ ; (forward-line 1))
;; Insert `.' at end of buffer (end of text mark).
(goto-char (point-max))
- (insert ".\r\n")))
+ (insert "." nntp-end-of-line)))
+
\f
;;;
-;;; Synchronous Communication with NNTP Server.
+;;; Synchronous Communication with NNTP servers.
;;;
+(defvar nntp-retry-command)
+
(defun nntp-send-command (response cmd &rest args)
+ "Wait for server RESPONSE after sending CMD and optional ARGS to server."
+ (let ((timer
+ (and nntp-command-timeout
+ (nnheader-run-at-time
+ nntp-command-timeout nil 'nntp-kill-command
+ (nnoo-current-server 'nntp))))
+ (nntp-retry-command t)
+ result)
+ (unwind-protect
+ (save-excursion
+ (while nntp-retry-command
+ (setq nntp-retry-command nil)
+ ;; Clear communication buffer.
+ (set-buffer nntp-server-buffer)
+ (widen)
+ (erase-buffer)
+ (if nntp-retry-on-break
+ (condition-case ()
+ (progn
+ (apply 'nntp-send-strings-to-server cmd args)
+ (setq result
+ (if response
+ (nntp-wait-for-response response)
+ t)))
+ (quit (setq nntp-retry-command t)))
+ (apply 'nntp-send-strings-to-server cmd args)
+ (setq result
+ (if response
+ (nntp-wait-for-response response)
+ t))))
+ result)
+ (when timer
+ (nnheader-cancel-timer timer)))))
+
+(defun nntp-kill-command (server)
+ "Kill and restart the connection to SERVER."
+ (let ((proc (cdr (assq
+ 'nntp-server-process
+ (assoc server (cddr (assq 'nntp nnoo-state-alist)))))))
+ (when proc
+ (delete-process (process-name proc)))
+ (nntp-close-server server)
+ (nntp-open-server server)
+ (when nntp-current-group
+ (nntp-request-group nntp-current-group))
+ (setq nntp-retry-command t)))
+
+(defun nntp-send-command-old (response cmd &rest args)
"Wait for server RESPONSE after sending CMD and optional ARGS to server."
(save-excursion
;; Clear communication buffer.
(nntp-wait-for-response response)
t)))
-(defun nntp-wait-for-response (regexp)
+(defun nntp-wait-for-response (regexp &optional slow)
"Wait for server response which matches REGEXP."
(save-excursion
(let ((status t)
(nntp-accept-response)
(while wait
(goto-char (point-min))
- (cond ((looking-at "[23]")
- (setq wait nil))
- ((looking-at "[45]")
- (setq status nil)
- (setq wait nil))
- (t (nntp-accept-response))))
+ (if slow
+ (progn
+ (cond ((re-search-forward "^[23][0-9][0-9]" nil t)
+ (setq wait nil))
+ ((re-search-forward "^[45][0-9][0-9]" nil t)
+ (setq status nil)
+ (setq wait nil))
+ (t (nntp-accept-response)))
+ (if (not wait) (delete-region (point-min)
+ (progn (beginning-of-line)
+ (point)))))
+ (cond ((looking-at "[23]")
+ (setq wait nil))
+ ((looking-at "[45]")
+ (setq status nil)
+ (setq wait nil))
+ (t (nntp-accept-response)))))
;; Save status message.
(end-of-line)
(setq nntp-status-string
- (buffer-substring (point-min) (point)))
- (if status
- (progn
- (setq wait t)
- (while wait
- (goto-char (point-max))
- (forward-line -1) ;(beginning-of-line)
- ;;(message (buffer-substring
- ;; (point)
- ;; (save-excursion (end-of-line) (point))))
- (if (looking-at regexp)
- (setq wait nil)
- (if nntp-debug-read
- (let ((newnum (/ (buffer-size) dotsize)))
- (if (not (= dotnum newnum))
- (progn
- (setq dotnum newnum)
- (message "NNTP: Reading %s"
- (make-string dotnum ?.))))))
- (nntp-accept-response)))
- ;; Remove "...".
- (if (and nntp-debug-read (> dotnum 0))
- (message ""))
- ;; Successfully received server response.
- t)))))
+ (nnheader-replace-chars-in-string
+ (buffer-substring (point-min) (point)) ?\r ? ))
+ (when status
+ (setq wait t)
+ (while wait
+ (goto-char (point-max))
+ (if (bolp) (forward-line -1) (beginning-of-line))
+ (if (looking-at regexp)
+ (setq wait nil)
+ (when nntp-debug-read
+ (let ((newnum (/ (buffer-size) dotsize))
+ (message-log-max nil))
+ (unless (= dotnum newnum)
+ (setq dotnum newnum)
+ (nnheader-message 7 "NNTP: Reading %s"
+ (make-string dotnum ?.)))))
+ (nntp-accept-response)))
+ ;; Remove "...".
+ (when (and nntp-debug-read (> dotnum 0))
+ (message ""))
+ ;; Successfully received server response.
+ t))))
\f
+
;;;
;;; Low-Level Interface to NNTP Server.
;;;
-(defun nntp-retrieve-headers-with-xover (sequence)
- (if (not nntp-server-xover)
- ()
- (let ((range (format "%d-%d" (car sequence)
- (nntp-last-element sequence))))
- (prog1
- (if (stringp nntp-server-xover)
- (nntp-send-command "^\\.\r$" nntp-server-xover range)
- (let ((commands nntp-xover-commands))
- (while (and commands
- (eq t nntp-server-xover))
- (nntp-send-command "^\\.\r$" (car commands) range)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (goto-char 1)
- (if (looking-at "[23]")
- (setq nntp-server-xover (car commands))))
- (setq commands (cdr commands)))
- (if (eq t nntp-server-xover)
- (setq nntp-server-xover nil))
- nntp-server-xover))
- (if nntp-server-xover (nntp-decode-text) (erase-buffer))))))
+(defun nntp-find-group-and-number ()
+ (save-excursion
+ (save-restriction
+ (set-buffer nntp-server-buffer)
+ (narrow-to-region (goto-char (point-min))
+ (or (search-forward "\n\n" nil t) (point-max)))
+ (goto-char (point-min))
+ ;; We first find the number by looking at the status line.
+ (let ((number (and (looking-at "2[0-9][0-9] +\\([0-9]+\\) ")
+ (string-to-int
+ (buffer-substring (match-beginning 1)
+ (match-end 1)))))
+ group newsgroups xref)
+ (and number (zerop number) (setq number nil))
+ ;; Then we find the group name.
+ (setq group
+ (cond
+ ;; If there is only one group in the Newsgroups header,
+ ;; then it seems quite likely that this article comes
+ ;; from that group, I'd say.
+ ((and (setq newsgroups (mail-fetch-field "newsgroups"))
+ (not (string-match "," newsgroups)))
+ newsgroups)
+ ;; If there is more than one group in the Newsgroups
+ ;; header, then the Xref header should be filled out.
+ ;; We hazard a guess that the group that has this
+ ;; article number in the Xref header is the one we are
+ ;; looking for. This might very well be wrong if this
+ ;; article happens to have the same number in several
+ ;; groups, but that's life.
+ ((and (setq xref (mail-fetch-field "xref"))
+ number
+ (string-match (format "\\([^ :]+\\):%d" number) xref))
+ (substring xref (match-beginning 1) (match-end 1)))
+ (t "")))
+ (when (string-match "\r" group)
+ (setq group (substring group 0 (match-beginning 0))))
+ (cons group number)))))
+
+(defun nntp-retrieve-headers-with-xover (articles &optional fetch-old)
+ (erase-buffer)
+ (cond
+
+ ;; This server does not talk NOV.
+ ((not nntp-server-xover)
+ nil)
+
+ ;; We don't care about gaps.
+ ((or (not nntp-nov-gap)
+ fetch-old)
+ (nntp-send-xover-command
+ (if fetch-old
+ (if (numberp fetch-old)
+ (max 1 (- (car articles) fetch-old))
+ 1)
+ (car articles))
+ (nntp-last-element articles) 'wait)
-(defun nntp-send-strings-to-server (&rest strings)
- "Send list of STRINGS to news server as command and its arguments."
- (let ((cmd (car strings))
- (strings (cdr strings)))
- ;; Command and each argument must be separated by one or more spaces.
- (while strings
- (setq cmd (concat cmd " " (car strings)))
- (setq strings (cdr strings)))
- ;; Command line must be terminated by a CR-LF.
- (if (not (nntp-server-opened nntp-current-server))
- (progn
- (nntp-close-server nntp-address)
- (if (not (nntp-open-server nntp-address))
- (error (nntp-status-message)))
+ (goto-char (point-min))
+ (when (looking-at "[1-5][0-9][0-9] ")
+ (delete-region (point) (progn (forward-line 1) (point))))
+ (while (search-forward "\r" nil t)
+ (replace-match "" t t))
+ (goto-char (point-max))
+ (forward-line -1)
+ (when (looking-at "\\.")
+ (delete-region (point) (progn (forward-line 1) (point)))))
+
+ ;; We do it the hard way. For each gap, an XOVER command is sent
+ ;; to the server. We do not wait for a reply from the server, we
+ ;; just send them off as fast as we can. That means that we have
+ ;; to count the number of responses we get back to find out when we
+ ;; have gotten all we asked for.
+ ((numberp nntp-nov-gap)
+ (let ((count 0)
+ (received 0)
+ (last-point (point-min))
+ (buf (current-buffer))
+ first)
+ ;; We have to check `nntp-server-xover'. If it gets set to nil,
+ ;; that means that the server does not understand XOVER, but we
+ ;; won't know that until we try.
+ (while (and nntp-server-xover articles)
+ (setq first (car articles))
+ ;; Search forward until we find a gap, or until we run out of
+ ;; articles.
+ (while (and (cdr articles)
+ (< (- (nth 1 articles) (car articles)) nntp-nov-gap))
+ (setq articles (cdr articles)))
+
+ (when (nntp-send-xover-command first (car articles))
+ (setq articles (cdr articles)
+ count (1+ count))
+
+ ;; Every 400 requests we have to read the stream in
+ ;; order to avoid deadlocks.
+ (when (or (null articles) ;All requests have been sent.
+ (zerop (% count nntp-maximum-request)))
+ (accept-process-output nntp-server-process 1)
+ ;; On some Emacs versions the preceding function has
+ ;; a tendency to change the buffer. Perhaps. It's
+ ;; quite difficult to reproduce, because it only
+ ;; seems to happen once in a blue moon.
+ (set-buffer buf)
+ (while (progn
+ (goto-char last-point)
+ ;; Count replies.
+ (while (re-search-forward "^[0-9][0-9][0-9] " nil t)
+ (setq received (1+ received)))
+ (setq last-point (point))
+ (< received count))
+ (accept-process-output nntp-server-process)
+ (set-buffer buf)))))
+
+ (when nntp-server-xover
+ ;; Wait for the reply from the final command.
+ (goto-char (point-max))
+ (re-search-backward "^[0-9][0-9][0-9] " nil t)
+ (when (looking-at "^[23]")
+ (while (progn
+ (goto-char (point-max))
+ (forward-line -1)
+ (not (looking-at "^\\.\r?\n")))
+ (nntp-accept-response)))
+
+ ;; We remove any "." lines and status lines.
+ (goto-char (point-min))
+ (while (search-forward "\r" nil t)
+ (delete-char -1))
+ (goto-char (point-min))
+ (delete-matching-lines "^\\.$\\|^[1-5][0-9][0-9] ")))))
+
+ nntp-server-xover)
+
+(defun nntp-send-xover-command (beg end &optional wait-for-reply)
+ "Send the XOVER command to the server."
+ (let ((range (format "%d-%d" (or beg 1) (or end beg 1))))
+ (if (stringp nntp-server-xover)
+ ;; If `nntp-server-xover' is a string, then we just send this
+ ;; command.
+ (if wait-for-reply
+ (nntp-send-command "^\\.\r?\n" nntp-server-xover range)
+ ;; We do not wait for the reply.
+ (nntp-send-strings-to-server nntp-server-xover range))
+ (let ((commands nntp-xover-commands))
+ ;; `nntp-xover-commands' is a list of possible XOVER commands.
+ ;; We try them all until we get at positive response.
+ (while (and commands (eq nntp-server-xover 'try))
+ (nntp-send-command "^\\.\r?\n" (car commands) range)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (goto-char (point-min))
+ (and (looking-at "[23]") ; No error message.
+ ;; We also have to look at the lines. Some buggy
+ ;; servers give back simple lines with just the
+ ;; article number. How... helpful.
+ (progn
+ (forward-line 1)
+ (looking-at "[0-9]+\t...")) ; More text after number.
+ (setq nntp-server-xover (car commands))))
+ (setq commands (cdr commands)))
+ ;; If none of the commands worked, we disable XOVER.
+ (when (eq nntp-server-xover 'try)
(save-excursion
(set-buffer nntp-server-buffer)
- (erase-buffer))))
- (process-send-string nntp-server-process (concat cmd "\r\n"))))
+ (erase-buffer)
+ (setq nntp-server-xover nil)))
+ nntp-server-xover))))
+
+(defun nntp-send-strings-to-server (&rest strings)
+ "Send STRINGS to the server."
+ (let ((cmd (concat (mapconcat 'identity strings " ") nntp-end-of-line)))
+ ;; We open the nntp server if it is down.
+ (or (nntp-server-opened (nnoo-current-server 'nntp))
+ (nntp-open-server (nnoo-current-server 'nntp))
+ (error (nntp-status-message)))
+ ;; Send the strings.
+ (process-send-string nntp-server-process cmd)
+ t))
(defun nntp-send-region-to-server (begin end)
- "Send current buffer region (from BEGIN to END) to news server."
+ "Send the current buffer region (from BEGIN to END) to the server."
(save-excursion
- ;; We have to work in the buffer associated with NNTP server
- ;; process because of NEmacs hack.
- (copy-to-buffer nntp-server-buffer begin end)
- (set-buffer nntp-server-buffer)
- (setq begin (point-min))
- (setq end (point-max))
- ;; `process-send-region' does not work if text to be sent is very
- ;; large. I don't know maximum size of text sent correctly.
- (let ((last nil)
- (size 100)) ;Size of text sent at once.
- (save-restriction
- (narrow-to-region begin end)
- (goto-char begin)
- (while (not (eobp))
- ;;(setq last (min end (+ (point) size)))
- ;; NEmacs gets confused if character at `last' is Kanji.
- (setq last (save-excursion
- (goto-char (min end (+ (point) size)))
- (or (eobp) (forward-char 1)) ;Adjust point
- (point)))
- (process-send-region nntp-server-process (point) last)
- ;; I don't know whether the next codes solve the known
- ;; problem of communication error of GNU Emacs.
- (accept-process-output)
- ;;(sit-for 0)
- (goto-char last))))
- ;; We cannot erase buffer, because reply may be received.
- (delete-region begin end)))
+ (let ((cur (current-buffer)))
+ ;; Copy the buffer over to the send buffer.
+ (nnheader-set-temp-buffer " *nntp send*")
+ (insert-buffer-substring cur begin end)
+ (save-excursion
+ (set-buffer cur)
+ (erase-buffer))
+ ;; `process-send-region' does not work if the text to be sent is very
+ ;; large, so we send it piecemeal.
+ (let ((last (point-min))
+ (size 100)) ;Size of text sent at once.
+ (while (and (/= last (point-max))
+ (memq (process-status nntp-server-process) '(open run)))
+ (process-send-region
+ nntp-server-process
+ last (setq last (min (+ last size) (point-max))))
+ ;; Read any output from the server. May be unnecessary.
+ (accept-process-output)))
+ (kill-buffer (current-buffer)))))
(defun nntp-open-server-semi-internal (server &optional service)
"Open SERVER.
If SERVER is nil, use value of environment variable `NNTPSERVER'.
-If SERVICE, this this as the port number."
+If SERVICE, use this as the port number."
+ (nnheader-insert "")
(let ((server (or server (getenv "NNTPSERVER")))
(status nil)
(timer
(and nntp-connection-timeout
- (run-at-time nntp-connection-timeout
- nil 'nntp-kill-connection server))))
- (setq nntp-status-string "")
- (message "nntp: Connecting to server on %s..." server)
- (cond ((and server (nntp-open-server-internal server service))
- (setq nntp-address server)
- (setq status
- (condition-case nil
- (nntp-wait-for-response "^[23].*\r$")
- (error nil)
- (quit nil)))
- (or status (nntp-close-server-internal server))
- (and nntp-server-process
- (progn
- (set-process-sentinel
- nntp-server-process 'nntp-default-sentinel)
- ;; You can send commands at startup like AUTHINFO here.
- ;; Added by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>
- (run-hooks 'nntp-server-opened-hook))))
- ((null server)
- (setq nntp-status-string "NNTP server is not specified.")))
- (and timer (cancel-timer timer))
- (message "")
- (or status
- (setq nntp-current-server nil))
- status))
+ (nnheader-run-at-time nntp-connection-timeout
+ nil 'nntp-kill-connection server))))
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (setq nntp-status-string "")
+ (nnheader-message 5 "nntp: Connecting to server on %s..." nntp-address)
+ (cond ((and server (nntp-open-server-internal server service))
+ (setq nntp-address server)
+ (setq status
+ (condition-case nil
+ (nntp-wait-for-response "^[23].*\r?\n" 'slow)
+ (error nil)
+ ;(quit nil)
+ ))
+ (unless status
+ (nntp-close-server-internal server)
+ (nnheader-report
+ 'nntp "Couldn't open connection to %s"
+ (if (and nntp-address
+ (not (equal nntp-address "")))
+ nntp-address server)))
+ (when nntp-server-process
+ (set-process-sentinel
+ nntp-server-process 'nntp-default-sentinel)
+ ;; You can send commands at startup like AUTHINFO here.
+ ;; Added by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>
+ (run-hooks 'nntp-server-opened-hook)))
+ ((null server)
+ (nnheader-report 'nntp "NNTP server is not specified."))
+ (t ; We couldn't open the server.
+ (nnheader-report 'nntp (buffer-string))))
+ (when timer
+ (nnheader-cancel-timer timer))
+ (message "")
+ (unless status
+ (nnoo-close-server 'nntp server)
+ (setq nntp-async-number nil))
+ status)))
+
+(defvar nntp-default-directories '("~" "/tmp" "/")
+ "Directories to as current directory in the nntp server buffer.")
(defun nntp-open-server-internal (server &optional service)
"Open connection to news server on SERVER by SERVICE (default is nntp)."
(let (proc)
(save-excursion
- ;; Use TCP/IP stream emulation package if needed.
- (or (fboundp 'open-network-stream)
- (require 'tcp))
- ;; Initialize communication buffer.
- (nnheader-init-server-buffer)
(set-buffer nntp-server-buffer)
- (if (setq proc
- (condition-case nil
- (open-network-stream
- "nntpd" (current-buffer) server nntp-port-number)
- (error nil)))
- (progn
- (setq nntp-server-process proc)
- ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
- (process-kill-without-query proc)
- (setq nntp-server-xover t)
- (setq nntp-server-list-active-group t)
- (setq nntp-address server)
- ;; It is possible to change kanji-fileio-code in this hook.
- (run-hooks 'nntp-server-hook)
- nntp-server-process)))))
+ ;; Make sure we have a valid current directory for the
+ ;; nntp server buffer.
+ (unless (file-exists-p default-directory)
+ (let ((dirs nntp-default-directories))
+ (while dirs
+ (when (file-exists-p (car dirs))
+ (setq default-directory (car dirs)
+ dirs nil))
+ (setq dirs (cdr dirs)))))
+ (cond
+ ((and (setq proc
+ (condition-case nil
+ (funcall nntp-open-server-function server)
+ (error nil)))
+ (memq (process-status proc) '(open run)))
+ (setq nntp-server-process proc)
+ (setq nntp-address server)
+ ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
+ (process-kill-without-query proc)
+ (run-hooks 'nntp-server-hook)
+ (push proc nntp-opened-connections)
+ (condition-case ()
+ (nntp-read-server-type)
+ (error
+ (nnheader-report 'nntp "Couldn't open server %s" server)
+ (nntp-close-server)))
+ nntp-server-process)
+ (t
+ (nnheader-report 'nntp "Couldn't open server %s" server))))))
+
+(defun nntp-read-server-type ()
+ "Find out what the name of the server we have connected to is."
+ ;; Wait for the status string to arrive.
+ (nntp-wait-for-response "^.*\n" t)
+ (setq nntp-server-type (buffer-string))
+ (let ((alist nntp-server-action-alist)
+ entry)
+ ;; Run server-specific commmands.
+ (while alist
+ (setq entry (pop alist))
+ (when (string-match (car entry) nntp-server-type)
+ (if (and (listp (cadr entry))
+ (not (eq 'lambda (caadr entry))))
+ (eval (cadr entry))
+ (funcall (cadr entry)))))))
+
+(defun nntp-open-network-stream (server)
+ (open-network-stream
+ "nntpd" nntp-server-buffer server nntp-port-number))
+
+(defun nntp-open-rlogin (server)
+ (let ((proc (if nntp-rlogin-user-name
+ (start-process
+ "nntpd" nntp-server-buffer "rsh"
+ "-l" nntp-rlogin-user-name server
+ (mapconcat 'identity
+ nntp-rlogin-parameters " "))
+ (start-process
+ "nntpd" nntp-server-buffer "rsh" server
+ (mapconcat 'identity
+ nntp-rlogin-parameters " ")))))
+ proc))
+
+(defun nntp-wait-for-string (regexp)
+ "Wait until string arrives in the buffer."
+ (let ((buf (current-buffer)))
+ (goto-char (point-min))
+ (while (not (re-search-forward regexp nil t))
+ (accept-process-output nntp-server-process)
+ (set-buffer buf)
+ (goto-char (point-min)))))
+
+(defun nntp-open-telnet (server)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (let ((proc (start-process
+ "nntpd" nntp-server-buffer "telnet" "-8"))
+ (case-fold-search t))
+ (when (memq (process-status proc) '(open run))
+ (process-send-string proc "set escape \^X\n")
+ (process-send-string proc (concat "open " server "\n"))
+ (nntp-wait-for-string "^\r*login:")
+ (process-send-string
+ proc (concat
+ (or nntp-telnet-user-name
+ (setq nntp-telnet-user-name (read-string "login: ")))
+ "\n"))
+ (nntp-wait-for-string "^\r*password:")
+ (process-send-string
+ proc (concat
+ (or nntp-telnet-passwd
+ (setq nntp-telnet-passwd
+ (nnmail-read-passwd "Password: ")))
+ "\n"))
+ (erase-buffer)
+ (nntp-wait-for-string "bash\\|\$ *\r?$\\|> *\r?")
+ (process-send-string
+ proc (concat (mapconcat 'identity nntp-telnet-parameters " ") "\n"))
+ (nntp-wait-for-string "^\r*200")
+ (beginning-of-line)
+ (delete-region (point-min) (point))
+ (process-send-string proc "\^]")
+ (nntp-wait-for-string "^telnet")
+ (process-send-string proc "mode character\n")
+ (accept-process-output proc 1)
+ (sit-for 1)
+ (goto-char (point-min))
+ (forward-line 1)
+ (delete-region (point) (point-max)))
+ proc)))
(defun nntp-close-server-internal (&optional server)
"Close connection to news server."
(if nntp-server-process
(delete-process nntp-server-process))
(setq nntp-server-process nil)
- (setq nntp-address ""))
+ ;(setq nntp-address "")
+ )
(defun nntp-accept-response ()
"Read response of server.
;; accept-process-output is called.
;; Suggested by Jason Venner <jason@violet.berkeley.edu>.
;; This is a copy of `nntp-default-sentinel'.
- (if (or (not nntp-server-process)
- (not (memq (process-status nntp-server-process) '(open run))))
- (error "nntp: Process connection closed; %s" (nntp-status-message))
- (if nntp-buggy-select
- (progn
- ;; We cannot use `accept-process-output'.
- ;; Fujitsu UTS requires messages during sleep-for. I don't know why.
- (message "NNTP: Reading...")
- (sleep-for 1)
- (message ""))
- (condition-case errorcode
- (accept-process-output nntp-server-process)
- (error
- (cond ((string-equal "select error: Invalid argument"
- (nth 1 errorcode))
- ;; Ignore select error.
- nil)
- (t
- (signal (car errorcode) (cdr errorcode)))))))))
+ (let ((buf (current-buffer)))
+ (prog1
+ (if (or (not nntp-server-process)
+ (not (memq (process-status nntp-server-process) '(open run))))
+ (error "nntp: Process connection closed; %s" (nntp-status-message))
+ (if nntp-buggy-select
+ (progn
+ ;; We cannot use `accept-process-output'.
+ ;; Fujitsu UTS requires messages during sleep-for.
+ ;; I don't know why.
+ (nnheader-message 5 "NNTP: Reading...")
+ (sleep-for 1)
+ (nnheader-message 5 ""))
+ (condition-case errorcode
+ (accept-process-output nntp-server-process 1)
+ (error
+ (cond ((string-equal "select error: Invalid argument"
+ (nth 1 errorcode))
+ ;; Ignore select error.
+ nil)
+ (t
+ (signal (car errorcode) (cdr errorcode))))))))
+ (set-buffer buf))))
(defun nntp-last-element (list)
"Return last element of LIST."
(setq list (cdr list)))
(car list))
-(defun nntp-possibly-change-server (newsgroup server)
- (let ((result t))
- ;; We see whether it is necessary to change newsgroup.
- (and newsgroup
- (or (not (string= newsgroup nntp-current-group)))
- (progn
- (setq result (nntp-request-group newsgroup server))
- (setq nntp-current-group newsgroup)))
- result))
+(defun nntp-possibly-change-server (newsgroup server &optional connectionless)
+ "Check whether the virtual server needs changing."
+ (when (and server
+ (not (nntp-server-opened server)))
+ ;; This virtual server isn't open, so we (re)open it here.
+ (nntp-open-server server nil t))
+ (when (and newsgroup
+ (not (equal newsgroup nntp-current-group)))
+ ;; Set the proper current group.
+ (nntp-request-group newsgroup server)))
+
+(defun nntp-try-list-active (group)
+ (nntp-list-active-group group)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (goto-char (point-min))
+ (cond ((looking-at "5[0-9]+")
+ (setq nntp-server-list-active-group nil))
+ (t
+ (setq nntp-server-list-active-group t)))))
+
+(defun nntp-async-server-opened ()
+ (and nntp-async-process
+ (memq (process-status nntp-async-process) '(open run))))
+
+(defun nntp-async-open-server ()
+ (save-excursion
+ (set-buffer (generate-new-buffer " *async-nntp*"))
+ (setq nntp-async-buffer (current-buffer))
+ (buffer-disable-undo (current-buffer)))
+ (let ((nntp-server-process nil)
+ (nntp-server-buffer nntp-async-buffer))
+ (nntp-open-server-semi-internal nntp-address nntp-port-number)
+ (if (not (setq nntp-async-process nntp-server-process))
+ (progn
+ (setq nntp-async-number nil))
+ (set-process-buffer nntp-async-process nntp-async-buffer))))
+
+(defun nntp-async-fetch-articles (article)
+ (if (stringp article)
+ ()
+ (let ((articles (cdr (memq (assq article nntp-async-articles)
+ nntp-async-articles)))
+ (max (cond ((numberp nntp-async-number)
+ nntp-async-number)
+ ((eq nntp-async-number t)
+ (length nntp-async-articles))
+ (t 0)))
+ nart)
+ (while (and (>= (setq max (1- max)) 0)
+ articles)
+ (or (memq (setq nart (caar articles)) nntp-async-fetched)
+ (progn
+ (nntp-async-send-strings "ARTICLE " (int-to-string nart))
+ (setq nntp-async-fetched (cons nart nntp-async-fetched))))
+ (setq articles (cdr articles))))))
+
+(defun nntp-async-send-strings (&rest strings)
+ (let ((cmd (concat (mapconcat 'identity strings " ") nntp-end-of-line)))
+ (or (nntp-async-server-opened)
+ (nntp-async-open-server)
+ (error (nntp-status-message)))
+ (process-send-string nntp-async-process cmd)))
+
+(defun nntp-async-request-group (group)
+ (if (equal group nntp-current-group)
+ ()
+ (let ((asyncs (assoc group nntp-async-group-alist)))
+ ;; A new group has been selected, so we push the current state
+ ;; of async articles on an alist, and pull the old state off.
+ (setq nntp-async-group-alist
+ (cons (list nntp-current-group
+ nntp-async-articles nntp-async-fetched
+ nntp-async-process)
+ (delq asyncs nntp-async-group-alist)))
+ (and asyncs
+ (progn
+ (setq nntp-async-articles (nth 1 asyncs))
+ (setq nntp-async-fetched (nth 2 asyncs))
+ (setq nntp-async-process (nth 3 asyncs)))))))
(provide 'nntp)
projects / gnus / blobdiff