(require 'nnheader)
(require 'nnoo)
(require 'gnus-util)
(nnoo-declare nntp)
(eval-when-compile (require 'cl))
(defgroup nntp nil
"NNTP access for Gnus."
:group 'gnus)
(defvoo nntp-address nil
"Address of the physical nntp server.")
(defvoo nntp-port-number "nntp"
"Port number on the physical nntp server.")
(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.")
(defvoo nntp-authinfo-function 'nntp-send-authinfo
"Function used to send AUTHINFO to the server.
It is called with no parameters.")
(defvoo nntp-server-action-alist
'(("nntpd 1\\.5\\.11t"
(remove-hook 'nntp-server-opened-hook 'nntp-send-mode-reader))
("NNRP server Netscape"
(setq nntp-server-list-active-group nil)))
"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-connection-function 'nntp-open-network-stream
"*Function used for connecting to a remote system.
It will be called with the buffer to output in as argument.
Currently, five such functions are provided (please refer to their
respective doc string for more information), three of them establishing
direct connections to the nntp server, and two of them using an indirect
host.
Direct connections:
- `nntp-open-network-stream' (the default),
- `nntp-open-ssl-stream',
- `nntp-open-tls-stream',
- `nntp-open-telnet-stream'.
Indirect connections:
- `nntp-open-via-rlogin-and-telnet',
- `nntp-open-via-telnet-and-telnet'.")
(defvoo nntp-never-echoes-commands nil
"*Non-nil means the nntp server never echoes commands.
It is reported that some nntps server doesn't echo commands. So, you
may want to set this to non-nil in the method for such a server setting
`nntp-open-connection-function' to `nntp-open-ssl-stream' for example.
Note that the `nntp-open-connection-functions-never-echo-commands'
variable overrides the nil value of this variable.")
(defvoo nntp-open-connection-functions-never-echo-commands
'(nntp-open-network-stream)
"*List of functions that never echo commands.
Add or set a function which you set to `nntp-open-connection-function'
to this list if it does not echo commands. Note that a non-nil value
of the `nntp-never-echoes-commands' variable overrides this variable.")
(defvoo nntp-pre-command nil
"*Pre-command to use with the various nntp-open-via-* methods.
This is where you would put \"runsocks\" or stuff like that.")
(defvoo nntp-telnet-command "telnet"
"*Telnet command used to connect to the nntp server.
This command is used by the various nntp-open-via-* methods.")
(defvoo nntp-telnet-switches '("-8")
"*Switches given to the telnet command `nntp-telnet-command'.")
(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 an indirect connection method (nntp-open-via-*).")
(defvoo nntp-via-rlogin-command "rsh"
"*Rlogin command used to connect to an intermediate host.
This command is used by the `nntp-open-via-rlogin-and-telnet' method.
The default is \"rsh\", but \"ssh\" is a popular alternative.")
(defvoo nntp-via-rlogin-command-switches nil
"*Switches given to the rlogin command `nntp-via-rlogin-command'.
If you use \"ssh\" for `nntp-via-rlogin-command', you may set this to
\(\"-C\") in order to compress all data connections, otherwise set this
to \(\"-t\" \"-e\" \"none\") or (\"-C\" \"-t\" \"-e\" \"none\") if the telnet
command requires a pseudo-tty allocation on an intermediate host.")
(defvoo nntp-via-telnet-command "telnet"
"*Telnet command used to connect to an intermediate host.
This command is used by the `nntp-open-via-telnet-and-telnet' method.")
(defvoo nntp-via-telnet-switches '("-8")
"*Switches given to the telnet command `nntp-via-telnet-command'.")
(defvoo nntp-via-user-name nil
"*User name to log in on an intermediate host with.
This variable is used by the `nntp-open-via-telnet-and-telnet' method.")
(defvoo nntp-via-user-password nil
"*Password to use to log in on an intermediate host with.
This variable is used by the `nntp-open-via-telnet-and-telnet' method.")
(defvoo nntp-via-address nil
"*Address of an intermediate host to connect to.
This variable is used by the `nntp-open-via-rlogin-and-telnet' and
`nntp-open-via-telnet-and-telnet' methods.")
(defvoo nntp-via-envuser nil
"*Whether both telnet client and server support the ENVIRON option.
If non-nil, there will be no prompt for a login name.")
(defvoo nntp-via-shell-prompt "bash\\|\$ *\r?$\\|> *\r?"
"*Regular expression to match the shell prompt on an intermediate host.
This variable is used by the `nntp-open-via-telnet-and-telnet' method.")
(defvoo nntp-large-newsgroup 50
"*The number of articles which indicates a large newsgroup.
If the number of articles is greater than the value, verbose
messages will be shown to indicate the current status.")
(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.")
(defvoo nntp-nov-is-evil nil
"*If non-nil, nntp will never attempt to use XOVER when talking to the 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.")
(defvoo nntp-nov-gap 5
"*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-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. See also
`nntp-open-connection-function'")
(defvoo nntp-coding-system-for-read 'binary
"*Coding system to read from NNTP.")
(defvoo nntp-coding-system-for-write 'binary
"*Coding system to write to NNTP.")
(defcustom nntp-authinfo-file "~/.authinfo"
".netrc-like file that holds nntp authinfo passwords."
:group 'nntp
:type
'(choice file
(repeat :tag "Entries"
:menu-tag "Inline"
(list :format "%v"
:value ("" ("login" . "") ("password" . ""))
(string :tag "Host")
(checklist :inline t
(cons :format "%v"
(const :format "" "login")
(string :format "Login: %v"))
(cons :format "%v"
(const :format "" "password")
(string :format "Password: %v")))))))
(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.
NOTE: This variable is never seen to work in Emacs 20 and XEmacs 21.")
(defvoo nntp-prepare-post-hook nil
"*Hook run just before posting an article. It is supposed to be used
to insert Cancel-Lock headers.")
(defvar nntp-record-commands nil
"*If non-nil, nntp will record all commands in the \"*nntp-log*\" buffer.")
(defvar nntp-have-messaged nil)
(defvar nntp-process-wait-for nil)
(defvar nntp-process-to-buffer nil)
(defvar nntp-process-callback nil)
(defvar nntp-process-decode nil)
(defvar nntp-process-start-point nil)
(defvar nntp-inside-change-function nil)
(defvoo nntp-last-command-time nil)
(defvoo nntp-last-command nil)
(defvoo nntp-authinfo-password nil)
(defvoo nntp-authinfo-user nil)
(defvar nntp-connection-list nil)
(defvoo nntp-server-type nil)
(defvoo nntp-connection-alist nil)
(defvoo nntp-status-string "")
(defconst nntp-version "nntp 5.0")
(defvoo nntp-inhibit-erase nil)
(defvoo nntp-inhibit-output nil)
(defvoo nntp-server-xover 'try)
(defvoo nntp-server-list-active-group 'try)
(defvar nntp-async-needs-kluge
(string-match "^GNU Emacs 20\\.3\\." (emacs-version))
"*When non-nil, nntp will poll asynchronous connections
once a second. By default, this is turned on only for Emacs
20.3, which has a bug that breaks nntp's normal method of
noticing asynchronous data.")
(defvar nntp-async-timer nil)
(defvar nntp-async-process-list nil)
(defvar nntp-ssl-program
"openssl s_client -quiet -ssl3 -connect %s:%p"
"A string containing commands for SSL connections.
Within a string, %s is replaced with the server address and %p with
port number on server. The program should accept IMAP commands on
stdin and return responses to stdout.")
(defvar nntp-authinfo-rejected nil
"A custom error condition used to report 'Authentication Rejected' errors.
Condition handlers that match just this condition ensure that the nntp
backend doesn't catch this error.")
(put 'nntp-authinfo-rejected 'error-conditions '(error nntp-authinfo-rejected))
(put 'nntp-authinfo-rejected 'error-message "Authorization Rejected")
(defsubst nntp-send-string (process string)
"Send STRING to PROCESS."
(setq nntp-last-command-time (current-time)
nntp-last-command string)
(when nntp-record-commands
(nntp-record-command string))
(process-send-string process (concat string nntp-end-of-line))
(or (memq (process-status process) '(open run))
(nntp-report "Server closed connection")))
(defun nntp-record-command (string)
"Record the command STRING."
(save-excursion
(set-buffer (get-buffer-create "*nntp-log*"))
(goto-char (point-max))
(let ((time (current-time)))
(insert (format-time-string "%Y%m%dT%H%M%S" time)
"." (format "%03d" (/ (nth 2 time) 1000))
" " nntp-address " " string "\n"))))
(defun nntp-report (&rest args)
"Report an error from the nntp backend. The first string in ARGS
can be a format string. For some commands, the failed command may be
retried once before actually displaying the error report."
(when nntp-record-commands
(nntp-record-command "*** CALLED nntp-report ***"))
(nnheader-report 'nntp args)
(apply 'error args))
(defun nntp-report-1 (&rest args)
"Throws out to nntp-with-open-group-error so that the connection may
be restored and the command retried."
(when nntp-record-commands
(nntp-record-command "*** CONNECTION LOST ***"))
(throw 'nntp-with-open-group-error t))
(defsubst nntp-wait-for (process wait-for buffer &optional decode discard)
"Wait for WAIT-FOR to arrive from PROCESS."
(save-excursion
(set-buffer (process-buffer process))
(goto-char (point-min))
(while (and (or (not (memq (char-after (point)) '(?2 ?3 ?4 ?5)))
(looking-at "48[02]"))
(memq (process-status process) '(open run)))
(cond ((looking-at "480")
(nntp-handle-authinfo process))
((looking-at "482")
(nnheader-report 'nntp (get 'nntp-authinfo-rejected 'error-message))
(signal 'nntp-authinfo-rejected nil))
((looking-at "^.*\n")
(delete-region (point) (progn (forward-line 1) (point)))))
(nntp-accept-process-output process)
(goto-char (point-min)))
(prog1
(cond
((looking-at "[45]")
(progn
(nntp-snarf-error-message)
nil))
((not (memq (process-status process) '(open run)))
(nntp-report "Server closed connection"))
(t
(goto-char (point-max))
(let ((limit (point-min))
response)
(while (not (re-search-backward wait-for limit t))
(nntp-accept-process-output process)
(setq limit (max (- (point-max) 1000) (point-min)))
(goto-char (point-max)))
(setq response (match-string 0))
(with-current-buffer nntp-server-buffer
(setq nntp-process-response response)))
(nntp-decode-text (not decode))
(unless discard
(save-excursion
(set-buffer buffer)
(goto-char (point-max))
(insert-buffer-substring (process-buffer process))
(when nntp-have-messaged
(setq nntp-have-messaged nil)
(nnheader-message 5 ""))))
t))
(unless discard
(erase-buffer)))))
(defun nntp-kill-buffer (buffer)
(when (buffer-name buffer)
(kill-buffer buffer)
(nnheader-init-server-buffer)))
(defsubst nntp-find-connection (buffer)
"Find the connection delivering to BUFFER."
(let ((alist nntp-connection-alist)
(buffer (if (stringp buffer) (get-buffer buffer) buffer))
process entry)
(while (and alist (setq entry (pop alist)))
(when (eq buffer (cadr entry))
(setq process (car entry)
alist nil)))
(when process
(if (memq (process-status process) '(open run))
process
(nntp-kill-buffer (process-buffer process))
(setq nntp-connection-alist (delq entry nntp-connection-alist))
nil))))
(defsubst nntp-find-connection-entry (buffer)
"Return the entry for the connection to BUFFER."
(assq (nntp-find-connection buffer) nntp-connection-alist))
(defun nntp-find-connection-buffer (buffer)
"Return the process connection buffer tied to BUFFER."
(let ((process (nntp-find-connection buffer)))
(when process
(process-buffer process))))
(defsubst nntp-retrieve-data (command address port buffer
&optional wait-for callback decode)
"Use COMMAND to retrieve data into BUFFER from PORT on ADDRESS."
(let ((process (or (nntp-find-connection buffer)
(nntp-open-connection buffer))))
(if process
(progn
(unless (or nntp-inhibit-erase nnheader-callback-function)
(save-excursion
(set-buffer (process-buffer process))
(erase-buffer)))
(condition-case err
(progn
(when command
(nntp-send-string process command))
(cond
((eq callback 'ignore)
t)
((and callback wait-for)
(nntp-async-wait process wait-for buffer decode callback)
t)
(wait-for
(nntp-wait-for process wait-for buffer decode))
(t t)))
(nntp-authinfo-rejected
(signal 'nntp-authinfo-rejected (cdr err)))
(error
(nnheader-report 'nntp "Couldn't open connection to %s: %s"
address err))
(quit
(message "Quit retrieving data from nntp")
(signal 'quit nil)
nil)))
(nnheader-report 'nntp "Couldn't open connection to %s" address))))
(defsubst nntp-send-command (wait-for &rest strings)
"Send STRINGS to server and wait until WAIT-FOR returns."
(when (and (not nnheader-callback-function)
(not nntp-inhibit-output))
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)))
(let* ((command (mapconcat 'identity strings " "))
(process (nntp-find-connection nntp-server-buffer))
(buffer (and process (process-buffer process)))
(pos (and buffer (with-current-buffer buffer (point)))))
(if process
(prog1
(nntp-retrieve-data command
nntp-address nntp-port-number
nntp-server-buffer
wait-for nnheader-callback-function)
(unless (or wait-for
nntp-never-echoes-commands
(memq
nntp-open-connection-function
nntp-open-connection-functions-never-echo-commands))
(nntp-accept-response)
(save-excursion
(set-buffer buffer)
(goto-char pos)
(if (looking-at (regexp-quote command))
(delete-region pos (progn (forward-line 1)
(gnus-point-at-bol))))
)))
(nnheader-report 'nntp "Couldn't open connection to %s."
nntp-address))))
(defun nntp-send-command-nodelete (wait-for &rest strings)
"Send STRINGS to server and wait until WAIT-FOR returns."
(let* ((command (mapconcat 'identity strings " "))
(process (nntp-find-connection nntp-server-buffer))
(buffer (and process (process-buffer process)))
(pos (and buffer (with-current-buffer buffer (point)))))
(if process
(prog1
(nntp-retrieve-data command
nntp-address nntp-port-number
nntp-server-buffer
wait-for nnheader-callback-function)
(unless wait-for
(nntp-accept-response)
(save-excursion
(set-buffer buffer)
(goto-char pos)
(if (looking-at (regexp-quote command))
(delete-region pos (progn (forward-line 1)
(gnus-point-at-bol)))))))
(nnheader-report 'nntp "Couldn't open connection to %s."
nntp-address))))
(defun nntp-send-command-and-decode (wait-for &rest strings)
"Send STRINGS to server and wait until WAIT-FOR returns."
(when (and (not nnheader-callback-function)
(not nntp-inhibit-output))
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)))
(let* ((command (mapconcat 'identity strings " "))
(process (nntp-find-connection nntp-server-buffer))
(buffer (and process (process-buffer process)))
(pos (and buffer (with-current-buffer buffer (point)))))
(if process
(prog1
(nntp-retrieve-data command
nntp-address nntp-port-number
nntp-server-buffer
wait-for nnheader-callback-function t)
(unless wait-for
(nntp-accept-response)
(save-excursion
(set-buffer buffer)
(goto-char pos)
(if (looking-at (regexp-quote command))
(delete-region pos (progn (forward-line 1) (gnus-point-at-bol))))
)))
(nnheader-report 'nntp "Couldn't open connection to %s."
nntp-address))))
(defun nntp-send-buffer (wait-for)
"Send the current buffer to server and wait until WAIT-FOR returns."
(when (and (not nnheader-callback-function)
(not nntp-inhibit-output))
(save-excursion
(set-buffer (nntp-find-connection-buffer nntp-server-buffer))
(erase-buffer)))
(nntp-encode-text)
(mm-with-unibyte-current-buffer
(process-send-region (nntp-find-connection nntp-server-buffer)
(point-min) (point-max)))
(nntp-retrieve-data
nil nntp-address nntp-port-number nntp-server-buffer
wait-for nnheader-callback-function))
(nnoo-define-basics nntp)
(defsubst nntp-next-result-arrived-p ()
(cond
((eq (char-after) ?2)
(if (re-search-forward "\n\\.\r?\n" nil t)
t
nil))
((looking-at "[34]")
(if (search-forward "\n" nil t)
t
nil))
(t
nil)))
(eval-when-compile
(defvar nntp-with-open-group-internal nil)
(defvar nntp-report-n nil))
(defmacro nntp-with-open-group (group server &optional connectionless &rest forms)
"Protect against servers that don't like clients that keep idle connections opens.
The problem being that these servers may either close a connection or
simply ignore any further requests on a connection. Closed
connections are not detected until accept-process-output has updated
the process-status. Dropped connections are not detected until the
connection timeouts (which may be several minutes) or
nntp-connection-timeout has expired. When these occur
nntp-with-open-group, opens a new connection then re-issues the NNTP
command whose response triggered the error."
(when (and (listp connectionless)
(not (eq connectionless nil)))
(setq forms (cons connectionless forms)
connectionless nil))
`(letf ((nntp-report-n (symbol-function 'nntp-report))
((symbol-function 'nntp-report) (symbol-function 'nntp-report-1))
(nntp-with-open-group-internal nil))
(while (catch 'nntp-with-open-group-error
(nntp-possibly-change-group ,group ,server ,connectionless)
(let ((timer
(and nntp-connection-timeout
(nnheader-run-at-time
nntp-connection-timeout nil
'(lambda ()
(let ((process (nntp-find-connection
nntp-server-buffer))
(buffer (and process
(process-buffer process))))
(when (and buffer (eq 0 (buffer-size buffer)))
(nntp-kill-buffer buffer))))))))
(unwind-protect
(setq nntp-with-open-group-internal
(condition-case nil
(progn ,@forms)
(quit
(nntp-close-server)
(signal 'quit nil))))
(when timer
(nnheader-cancel-timer timer)))
nil))
(setf (symbol-function 'nntp-report) nntp-report-n))
nntp-with-open-group-internal))
(deffoo nntp-retrieve-headers (articles &optional group server fetch-old)
"Retrieve the headers of ARTICLES."
(nntp-with-open-group
group server
(save-excursion
(set-buffer (nntp-find-connection-buffer nntp-server-buffer))
(erase-buffer)
(if (and (not gnus-nov-is-evil)
(not nntp-nov-is-evil)
(nntp-retrieve-headers-with-xover articles fetch-old))
'nov
(let ((number (length articles))
(articles articles)
(count 0)
(received 0)
(last-point (point-min))
(buf (nntp-find-connection-buffer nntp-server-buffer))
(nntp-inhibit-erase t)
article)
(while (setq article (pop articles))
(nntp-send-command
nil
"HEAD" (if (numberp article)
(int-to-string article)
article))
(incf count)
(when (or (null articles) (zerop (% count nntp-maximum-request)))
(nntp-accept-response)
(while (progn
(set-buffer buf)
(goto-char last-point)
(while (nntp-next-result-arrived-p)
(setq last-point (point))
(incf received))
(< received count))
(and (numberp nntp-large-newsgroup)
(> number nntp-large-newsgroup)
(zerop (% received 20))
(nnheader-message 6 "NNTP: Receiving headers... %d%%"
(/ (* received 100) number)))
(nntp-accept-response))))
(and (numberp nntp-large-newsgroup)
(> number nntp-large-newsgroup)
(nnheader-message 6 "NNTP: Receiving headers...done"))
(nnheader-fold-continuation-lines)
(nnheader-strip-cr)
(copy-to-buffer nntp-server-buffer (point-min) (point-max))
'headers)))))
(deffoo nntp-retrieve-groups (groups &optional server)
"Retrieve group info on GROUPS."
(nntp-with-open-group
nil server
(when (nntp-find-connection-buffer nntp-server-buffer)
(catch 'done
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(set-buffer (nntp-find-connection-buffer nntp-server-buffer))
(when (eq nntp-server-list-active-group 'try)
(nntp-try-list-active (car groups)))
(erase-buffer)
(let ((count 0)
(groups groups)
(received 0)
(last-point (point-min))
(nntp-inhibit-erase t)
(buf (nntp-find-connection-buffer nntp-server-buffer))
(command (if nntp-server-list-active-group
"LIST ACTIVE" "GROUP")))
(while groups
(unless (gnus-buffer-live-p buf)
(nnheader-report 'nntp "Connection to %s is closed." server)
(throw 'done nil))
(nntp-send-command nil command (pop groups))
(incf count)
(when (or (null groups) (zerop (% count nntp-maximum-request)))
(nntp-accept-response)
(while (and (gnus-buffer-live-p buf)
(progn
(set-buffer buf)
(goto-char last-point)
(while (re-search-forward "^[0-9]" nil t)
(incf received))
(setq last-point (point))
(< received count)))
(nntp-accept-response))))
(unless (gnus-buffer-live-p buf)
(nnheader-report 'nntp "Connection to %s is closed." server)
(throw 'done nil))
(set-buffer buf)
(goto-char (point-max))
(re-search-backward "^[0-9]" nil t)
(when (looking-at "^[23]")
(while (and (gnus-buffer-live-p buf)
(progn
(set-buffer buf)
(goto-char (point-max))
(if (not nntp-server-list-active-group)
(not (re-search-backward "\r?\n"
(- (point) 3) t))
(not (re-search-backward "^\\.\r?\n"
(- (point) 4) t)))))
(nntp-accept-response)))
(unless (gnus-buffer-live-p buf)
(nnheader-report 'nntp "Connection to %s is closed." server)
(throw 'done nil))
(set-buffer buf)
(goto-char (point-min))
(while (search-forward "\r" nil t)
(replace-match "" t t))
(if (not nntp-server-list-active-group)
(progn
(copy-to-buffer nntp-server-buffer (point-min) (point-max))
'group)
(goto-char (point-min))
(while (re-search-forward "^[.2-5]" nil t)
(delete-region (match-beginning 0)
(progn (forward-line 1) (point))))
(copy-to-buffer nntp-server-buffer (point-min) (point-max))
'active)))))))
(deffoo nntp-retrieve-articles (articles &optional group server)
(nntp-with-open-group
group server
(save-excursion
(let ((number (length articles))
(articles articles)
(count 0)
(received 0)
(last-point (point-min))
(buf (nntp-find-connection-buffer nntp-server-buffer))
(nntp-inhibit-erase t)
(map (apply 'vector articles))
(point 1)
article)
(set-buffer buf)
(erase-buffer)
(while (setq article (pop articles))
(nntp-send-command
nil
"ARTICLE" (if (numberp article)
(int-to-string article)
article))
(incf count)
(when (or (null articles) (zerop (% count nntp-maximum-request)))
(nntp-accept-response)
(while (progn
(set-buffer buf)
(goto-char last-point)
(while (nntp-next-result-arrived-p)
(aset map received (cons (aref map received) (point)))
(setq last-point (point))
(incf received))
(< received count))
(and (numberp nntp-large-newsgroup)
(> number nntp-large-newsgroup)
(zerop (% received 20))
(nnheader-message 6 "NNTP: Receiving articles... %d%%"
(/ (* received 100) number)))
(nntp-accept-response))))
(and (numberp nntp-large-newsgroup)
(> number nntp-large-newsgroup)
(nnheader-message 6 "NNTP: Receiving articles...done"))
(set-buffer nntp-server-buffer)
(erase-buffer)
(setq last-point (point-min))
(mapcar
(lambda (entry)
(narrow-to-region
(setq point (goto-char (point-max)))
(progn
(insert-buffer-substring buf last-point (cdr entry))
(point-max)))
(setq last-point (cdr entry))
(nntp-decode-text)
(widen)
(cons (car entry) point))
map)))))
(defun nntp-try-list-active (group)
(nntp-list-active-group group)
(save-excursion
(set-buffer nntp-server-buffer)
(goto-char (point-min))
(cond ((or (eobp)
(looking-at "5[0-9]+"))
(setq nntp-server-list-active-group nil))
(t
(setq nntp-server-list-active-group t)))))
(deffoo nntp-list-active-group (group &optional server)
"Return the active info on GROUP (which can be a regexp)."
(nntp-with-open-group
nil server
(nntp-send-command "^\\.*\r?\n" "LIST ACTIVE" group)))
(deffoo nntp-request-group-articles (group &optional server)
"Return the list of existing articles in GROUP."
(nntp-with-open-group
nil server
(nntp-send-command "^\\.*\r?\n" "LISTGROUP" group)))
(deffoo nntp-request-article (article &optional group server buffer command)
(nntp-with-open-group
group server
(when (nntp-send-command-and-decode
"\r?\n\\.\r?\n" "ARTICLE"
(if (numberp article) (int-to-string article) article))
(if (and buffer
(not (equal buffer nntp-server-buffer)))
(save-excursion
(set-buffer nntp-server-buffer)
(copy-to-buffer buffer (point-min) (point-max))
(nntp-find-group-and-number group))
(nntp-find-group-and-number group)))))
(deffoo nntp-request-head (article &optional group server)
(nntp-with-open-group
group server
(when (nntp-send-command
"\r?\n\\.\r?\n" "HEAD"
(if (numberp article) (int-to-string article) article))
(prog1
(nntp-find-group-and-number group)
(nntp-decode-text)))))
(deffoo nntp-request-body (article &optional group server)
(nntp-with-open-group
group server
(nntp-send-command-and-decode
"\r?\n\\.\r?\n" "BODY"
(if (numberp article) (int-to-string article) article))))
(deffoo nntp-request-group (group &optional server dont-check)
(nntp-with-open-group
nil server
(when (nntp-send-command "^[245].*\n" "GROUP" group)
(let ((entry (nntp-find-connection-entry nntp-server-buffer)))
(setcar (cddr entry) group)))))
(deffoo nntp-close-group (group &optional server)
t)
(deffoo nntp-server-opened (&optional server)
"Say whether a connection to SERVER has been opened."
(and (nnoo-current-server-p 'nntp server)
nntp-server-buffer
(gnus-buffer-live-p nntp-server-buffer)
(nntp-find-connection nntp-server-buffer)))
(deffoo nntp-open-server (server &optional defs connectionless)
(nnheader-init-server-buffer)
(if (nntp-server-opened server)
t
(when (or (stringp (car defs))
(numberp (car defs)))
(setq defs (cons (list 'nntp-port-number (car defs)) (cdr defs))))
(unless (assq 'nntp-address defs)
(setq defs (append defs (list (list 'nntp-address server)))))
(nnoo-change-server 'nntp server defs)
(unless connectionless
(or (nntp-find-connection nntp-server-buffer)
(nntp-open-connection nntp-server-buffer)))))
(deffoo nntp-close-server (&optional server)
(nntp-possibly-change-group nil server t)
(let ((process (nntp-find-connection nntp-server-buffer)))
(while process
(when (memq (process-status process) '(open run))
(ignore-errors
(nntp-send-string process "QUIT")
(unless (eq nntp-open-connection-function 'nntp-open-network-stream)
(sleep-for 1))))
(nntp-kill-buffer (process-buffer process))
(setq process (car (pop nntp-connection-alist))))
(nnoo-close-server 'nntp)))
(deffoo nntp-request-close ()
(let (process)
(while (setq process (pop nntp-connection-list))
(when (memq (process-status process) '(open run))
(ignore-errors
(nntp-send-string process "QUIT")
(unless (eq nntp-open-connection-function 'nntp-open-network-stream)
(sleep-for 1))))
(nntp-kill-buffer (process-buffer process)))))
(deffoo nntp-request-list (&optional server)
(nntp-with-open-group
nil server
(nntp-send-command-and-decode "\r?\n\\.\r?\n" "LIST")))
(deffoo nntp-request-list-newsgroups (&optional server)
(nntp-with-open-group
nil server
(nntp-send-command "\r?\n\\.\r?\n" "LIST NEWSGROUPS")))
(deffoo nntp-request-newgroups (date &optional server)
(nntp-with-open-group
nil server
(save-excursion
(set-buffer nntp-server-buffer)
(let* ((time (date-to-time date))
(ls (- (cadr time) (nth 8 (decode-time time)))))
(cond ((< ls 0)
(setcar time (1- (car time)))
(setcar (cdr time) (+ ls 65536)))
((>= ls 65536)
(setcar time (1+ (car time)))
(setcar (cdr time) (- ls 65536)))
(t
(setcar (cdr time) ls)))
(prog1
(nntp-send-command
"^\\.\r?\n" "NEWGROUPS"
(format-time-string "%y%m%d %H%M%S" time)
"GMT")
(nntp-decode-text))))))
(deffoo nntp-request-post (&optional server)
(nntp-with-open-group
nil server
(when (nntp-send-command "^[23].*\r?\n" "POST")
(let ((response (with-current-buffer nntp-server-buffer
nntp-process-response))
server-id)
(when (and response
(string-match "^[23].*\\(<[^\t\n @<>]+@[^\t\n @<>]+>\\)"
response))
(setq server-id (match-string 1 response))
(narrow-to-region (goto-char (point-min))
(if (search-forward "\n\n" nil t)
(1- (point))
(point-max)))
(unless (mail-fetch-field "Message-ID")
(goto-char (point-min))
(insert "Message-ID: " server-id "\n"))
(widen))
(run-hooks 'nntp-prepare-post-hook)
(nntp-send-buffer "^[23].*\n")))))
(deffoo nntp-request-type (group article)
'news)
(deffoo nntp-asynchronous-p ()
t)
(defun nntp-send-mode-reader ()
"Send the MODE READER command to the nntp server.
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 "^.*\n" "MODE READER"))
(defun nntp-send-authinfo (&optional send-if-force)
"Send the AUTHINFO to the nntp server.
It will look in the \"~/.authinfo\" file for matching entries. If
nothing suitable is found there, it will prompt for a user name
and a password.
If SEND-IF-FORCE, only send authinfo to the server if the
.authinfo file has the FORCE token."
(let* ((list (gnus-parse-netrc nntp-authinfo-file))
(alist (gnus-netrc-machine list nntp-address "nntp"))
(force (gnus-netrc-get alist "force"))
(user (or (gnus-netrc-get alist "login") nntp-authinfo-user))
(passwd (gnus-netrc-get alist "password")))
(when (or (not send-if-force)
force)
(unless user
(setq user (read-string (format "NNTP (%s) user name: " nntp-address))
nntp-authinfo-user user))
(unless (member user '(nil ""))
(nntp-send-command "^3.*\r?\n" "AUTHINFO USER" user)
(when t (nntp-send-command
"^2.*\r?\n" "AUTHINFO PASS"
(or passwd
nntp-authinfo-password
(setq nntp-authinfo-password
(read-passwd (format "NNTP (%s@%s) password: "
user nntp-address))))))))))
(defun nntp-send-nosy-authinfo ()
"Send the AUTHINFO to the nntp server."
(let ((user (read-string (format "NNTP (%s) user name: " nntp-address))))
(unless (member user '(nil ""))
(nntp-send-command "^3.*\r?\n" "AUTHINFO USER" user)
(when t (nntp-send-command "^2.*\r?\n" "AUTHINFO PASS"
(read-passwd (format "NNTP (%s@%s) password: "
user nntp-address)))))))
(defun nntp-send-authinfo-from-file ()
"Send the AUTHINFO to the nntp server.
The authinfo login name is taken from the user's login name and the
password contained in '~/.nntp-authinfo'."
(when (file-exists-p "~/.nntp-authinfo")
(with-temp-buffer
(insert-file-contents "~/.nntp-authinfo")
(goto-char (point-min))
(nntp-send-command "^3.*\r?\n" "AUTHINFO USER" (user-login-name))
(nntp-send-command
"^2.*\r?\n" "AUTHINFO PASS"
(buffer-substring (point) (gnus-point-at-eol))))))
(defun nntp-handle-authinfo (process)
"Take care of an authinfo response from the server."
(let ((last nntp-last-command))
(funcall nntp-authinfo-function)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer))
(nntp-send-string process last)))
(defun nntp-make-process-buffer (buffer)
"Create a new, fresh buffer usable for nntp process connections."
(save-excursion
(set-buffer
(generate-new-buffer
(format " *server %s %s %s*"
nntp-address nntp-port-number
(gnus-buffer-exists-p buffer))))
(mm-enable-multibyte)
(set (make-local-variable 'after-change-functions) nil)
(set (make-local-variable 'nntp-process-wait-for) nil)
(set (make-local-variable 'nntp-process-callback) nil)
(set (make-local-variable 'nntp-process-to-buffer) nil)
(set (make-local-variable 'nntp-process-start-point) nil)
(set (make-local-variable 'nntp-process-decode) nil)
(current-buffer)))
(defun nntp-open-connection (buffer)
"Open a connection to PORT on ADDRESS delivering output to BUFFER."
(run-hooks 'nntp-prepare-server-hook)
(let* ((pbuffer (nntp-make-process-buffer buffer))
(timer
(and nntp-connection-timeout
(nnheader-run-at-time
nntp-connection-timeout nil
`(lambda ()
(nntp-kill-buffer ,pbuffer)))))
(process
(condition-case ()
(let ((coding-system-for-read nntp-coding-system-for-read)
(coding-system-for-write nntp-coding-system-for-write))
(funcall nntp-open-connection-function pbuffer))
(error nil)
(quit
(message "Quit opening connection")
(nntp-kill-buffer pbuffer)
(signal 'quit nil)
nil))))
(when timer
(nnheader-cancel-timer timer))
(unless process
(nntp-kill-buffer pbuffer))
(when (and (buffer-name pbuffer)
process)
(gnus-set-process-query-on-exit-flag process nil)
(if (and (nntp-wait-for process "^2.*\n" buffer nil t)
(memq (process-status process) '(open run)))
(prog1
(caar (push (list process buffer nil) nntp-connection-alist))
(push process nntp-connection-list)
(save-excursion
(set-buffer pbuffer)
(nntp-read-server-type)
(erase-buffer)
(set-buffer nntp-server-buffer)
(let ((nnheader-callback-function nil))
(run-hooks 'nntp-server-opened-hook)
(nntp-send-authinfo t))))
(nntp-kill-buffer (process-buffer process))
nil))))
(defun nntp-open-network-stream (buffer)
(open-network-stream "nntpd" buffer nntp-address nntp-port-number))
(eval-and-compile
(autoload 'format-spec "format-spec")
(autoload 'format-spec-make "format-spec")
(autoload 'open-tls-stream "tls"))
(defun nntp-open-ssl-stream (buffer)
(let* ((process-connection-type nil)
(proc (start-process "nntpd" buffer
shell-file-name
shell-command-switch
(format-spec nntp-ssl-program
(format-spec-make
?s nntp-address
?p nntp-port-number)))))
(gnus-set-process-query-on-exit-flag proc nil)
(save-excursion
(set-buffer buffer)
(let ((nntp-connection-alist (list proc buffer nil)))
(nntp-wait-for-string "^\r*20[01]"))
(beginning-of-line)
(delete-region (point-min) (point))
proc)))
(defun nntp-open-tls-stream (buffer)
(let ((proc (open-tls-stream "nntpd" buffer nntp-address nntp-port-number)))
(gnus-set-process-query-on-exit-flag proc nil)
(save-excursion
(set-buffer buffer)
(let ((nntp-connection-alist (list proc buffer nil)))
(nntp-wait-for-string "^\r*20[01]"))
(beginning-of-line)
(delete-region (point-min) (point))
proc)))
(defun nntp-read-server-type ()
"Find out what the name of the server we have connected to is."
(setq nntp-server-type (buffer-string))
(let ((alist nntp-server-action-alist)
(case-fold-search t)
entry)
(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-async-wait (process wait-for buffer decode callback)
(save-excursion
(set-buffer (process-buffer process))
(unless nntp-inside-change-function
(erase-buffer))
(setq nntp-process-wait-for wait-for
nntp-process-to-buffer buffer
nntp-process-decode decode
nntp-process-callback callback
nntp-process-start-point (point-max))
(setq after-change-functions '(nntp-after-change-function))
(if nntp-async-needs-kluge
(nntp-async-kluge process))))
(defun nntp-async-kluge (process)
(unless nntp-async-timer
(setq nntp-async-timer
(nnheader-run-at-time 1 1 'nntp-async-timer-handler)))
(add-to-list 'nntp-async-process-list process))
(defun nntp-async-timer-handler ()
(mapcar
(lambda (proc)
(if (memq (process-status proc) '(open run))
(nntp-async-trigger proc)
(nntp-async-stop proc)))
nntp-async-process-list))
(defun nntp-async-stop (proc)
(setq nntp-async-process-list (delq proc nntp-async-process-list))
(when (and nntp-async-timer (not nntp-async-process-list))
(nnheader-cancel-timer nntp-async-timer)
(setq nntp-async-timer nil)))
(defun nntp-after-change-function (beg end len)
(unwind-protect
(when (and (eq 0 len) (eq (point-max) end))
(save-match-data
(let ((proc (get-buffer-process (current-buffer))))
(when proc
(nntp-async-trigger proc)))))
(when quit-flag
(setq after-change-functions '(nntp-after-change-function)))))
(defun nntp-async-trigger (process)
(save-excursion
(set-buffer (process-buffer process))
(when nntp-process-callback
(goto-char nntp-process-start-point)
(if (memq (following-char) '(?4 ?5))
(if (looking-at "480")
(nntp-handle-authinfo process)
(nntp-snarf-error-message)
(nntp-do-callback nil))
(goto-char (point-max))
(when (re-search-backward
nntp-process-wait-for nntp-process-start-point t)
(let ((response (match-string 0)))
(with-current-buffer nntp-server-buffer
(setq nntp-process-response response)))
(nntp-async-stop process)
(when (gnus-buffer-exists-p nntp-process-to-buffer)
(let ((buf (current-buffer))
(start nntp-process-start-point)
(decode nntp-process-decode))
(save-excursion
(set-buffer nntp-process-to-buffer)
(goto-char (point-max))
(save-restriction
(narrow-to-region (point) (point))
(insert-buffer-substring buf start)
(when decode
(nntp-decode-text))))))
(goto-char (point-max))
(nntp-do-callback
(buffer-name (get-buffer nntp-process-to-buffer))))))))
(defun nntp-do-callback (arg)
(let ((callback nntp-process-callback)
(nntp-inside-change-function t))
(setq nntp-process-callback nil)
(funcall callback arg)))
(defun nntp-snarf-error-message ()
"Save the error message in the current buffer."
(let ((message (buffer-string)))
(while (string-match "[\r\n]+" message)
(setq message (replace-match " " t t message)))
(nnheader-report 'nntp message)
message))
(defun nntp-accept-process-output (process)
"Wait for output from PROCESS and message some dots."
(save-excursion
(set-buffer (or (nntp-find-connection-buffer nntp-server-buffer)
nntp-server-buffer))
(let ((len (/ (buffer-size) 1024))
message-log-max)
(unless (< len 10)
(setq nntp-have-messaged t)
(nnheader-message 7 "nntp read: %dk" len)))
(nnheader-accept-process-output process)
(or (and process
(memq (process-status process) '(open run)))
(nntp-report "Server closed connection"))))
(defun nntp-accept-response ()
"Wait for output from the process that outputs to BUFFER."
(nntp-accept-process-output (nntp-find-connection nntp-server-buffer)))
(defun nntp-possibly-change-group (group server &optional connectionless)
(let ((nnheader-callback-function nil))
(when server
(or (nntp-server-opened server)
(nntp-open-server server nil connectionless)))
(unless connectionless
(or (nntp-find-connection nntp-server-buffer)
(nntp-open-connection nntp-server-buffer))))
(when group
(let ((entry (nntp-find-connection-entry nntp-server-buffer)))
(cond ((not entry)
(nntp-report "Server closed connection"))
((not (equal group (caddr entry)))
(save-excursion
(set-buffer (process-buffer (car entry)))
(erase-buffer)
(nntp-send-command "^[245].*\n" "GROUP" group)
(setcar (cddr entry) group)
(erase-buffer)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer))))))))
(defun nntp-decode-text (&optional cr-only)
"Decode the text in the current buffer."
(goto-char (point-min))
(while (search-forward "\r" nil t)
(delete-char -1))
(unless cr-only
(goto-char (point-max))
(forward-line -1)
(when (looking-at ".\n")
(delete-char 2))
(goto-char (point-min))
(while (looking-at "[1-5][0-9][0-9] .*\n")
(delete-region (point) (progn (forward-line 1) (point))))
(while (search-forward "\n.." nil t)
(delete-char -1))))
(defun nntp-encode-text ()
"Encode the text in the current buffer."
(save-excursion
(goto-char (point-min))
(while (re-search-forward "^\\." nil t)
(insert "."))
(goto-char (point-max))
(unless (bolp)
(insert "\n"))
(goto-char (point-max))
(insert ".\n")
(goto-char (point-min))
(while (not (eobp))
(end-of-line)
(delete-char 1)
(insert nntp-end-of-line))))
(defun nntp-retrieve-headers-with-xover (articles &optional fetch-old)
(set-buffer nntp-server-buffer)
(erase-buffer)
(cond
((not nntp-server-xover)
nil)
((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))
(car (last articles)) 'wait)
(goto-char (point-min))
(when (looking-at "[1-5][0-9][0-9] .*\n")
(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)))))
((numberp nntp-nov-gap)
(let ((count 0)
(received 0)
last-point
in-process-buffer-p
(buf nntp-server-buffer)
(process-buffer (nntp-find-connection-buffer nntp-server-buffer))
first last status)
(while (and nntp-server-xover articles)
(setq first (car articles))
(while (and (cdr articles)
(< (- (nth 1 articles) (car articles)) nntp-nov-gap))
(setq articles (cdr articles)))
(setq in-process-buffer-p (stringp nntp-server-xover))
(nntp-send-xover-command first (setq last (car articles)))
(setq articles (cdr articles))
(when (and nntp-server-xover in-process-buffer-p)
(setq count (1+ count))
(when (or (null articles) (= 1 (% count nntp-maximum-request)))
(nntp-accept-response)
(set-buffer process-buffer)
(while (progn
(goto-char (or last-point (point-min)))
(while (re-search-forward "^\\([0-9][0-9][0-9]\\) .*\n"
nil t)
(incf received)
(setq status (match-string 1))
(if (string-match "^[45]" status)
(setq status 'error)
(setq status 'ok)))
(setq last-point (point))
(or (< received count)
(if (eq status 'error)
nil
(progn
(goto-char (point-max))
(forward-line -1)
(not (looking-at "^\\.\r?\n"))))))
(nntp-accept-response)
(set-buffer process-buffer))))
(when (<= count 1)
(goto-char (point-min))
(when (re-search-forward "^[0-9][0-9][0-9] .*\n\\([0-9]+\\)" nil t)
(let ((low-limit (string-to-number
(buffer-substring (match-beginning 1)
(match-end 1)))))
(while (and articles (<= (car articles) low-limit))
(setq articles (cdr articles))))))
(set-buffer buf))
(when nntp-server-xover
(when in-process-buffer-p
(set-buffer buf)
(goto-char (point-max))
(insert-buffer-substring process-buffer)
(set-buffer process-buffer)
(erase-buffer)
(set-buffer buf))
(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] ")
t))))
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" beg end))
(nntp-inhibit-erase t))
(if (stringp nntp-server-xover)
(if wait-for-reply
(nntp-send-command-nodelete
"\r?\n\\.\r?\n" nntp-server-xover range)
(nntp-send-command-nodelete nil nntp-server-xover range))
(let ((commands nntp-xover-commands))
(while (and commands (eq nntp-server-xover 'try))
(nntp-send-command-nodelete "\r?\n\\.\r?\n" (car commands) range)
(save-excursion
(set-buffer nntp-server-buffer)
(goto-char (point-min))
(and (looking-at "[23]") (progn
(forward-line 1)
(looking-at "[0-9]+\t...")) (setq nntp-server-xover (car commands))))
(setq commands (cdr commands)))
(when (eq nntp-server-xover 'try)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(setq nntp-server-xover nil)))
nntp-server-xover))))
(defun nntp-find-group-and-number (&optional group)
(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))
(let ((number (and (looking-at "2[0-9][0-9] +\\([0-9]+\\) ")
(string-to-number
(buffer-substring (match-beginning 1)
(match-end 1)))))
newsgroups xref)
(and number (zerop number) (setq number nil))
(if number
(setq group
(cond
((and (setq newsgroups
(mail-fetch-field "newsgroups"))
(not (string-match "," newsgroups)))
newsgroups)
((and (setq xref (mail-fetch-field "xref"))
number
(string-match
(format "\\([^ :]+\\):%d" number) xref))
(match-string 1 xref))
(t "")))
(cond
((and (setq xref (mail-fetch-field "xref"))
(string-match
(if group
(concat "\\(" (regexp-quote group) "\\):\\([0-9]+\\)")
"\\([^ :]+\\):\\([0-9]+\\)")
xref))
(setq group (match-string 1 xref)
number (string-to-number (match-string 2 xref))))
((and (setq newsgroups
(mail-fetch-field "newsgroups"))
(not (string-match "," newsgroups)))
(setq group newsgroups))
(group)
(t (setq group ""))))
(when (string-match "\r" group)
(setq group (substring group 0 (match-beginning 0))))
(cons group number)))))
(defun nntp-wait-for-string (regexp)
"Wait until string arrives in the buffer."
(let ((buf (current-buffer))
proc)
(goto-char (point-min))
(while (and (setq proc (get-buffer-process buf))
(memq (process-status proc) '(open run))
(not (re-search-forward regexp nil t)))
(accept-process-output proc)
(set-buffer buf)
(goto-char (point-min)))))
(defvoo nntp-open-telnet-envuser nil
"*If non-nil, telnet session (client and server both) will support the ENVIRON option and not prompt for login name.")
(defvoo nntp-telnet-shell-prompt "bash\\|\$ *\r?$\\|> *\r?"
"*Regular expression to match the shell prompt on the remote machine.")
(defvoo nntp-rlogin-program "rsh"
"*Program used to log in on remote machines.
The default is \"rsh\", but \"ssh\" is a popular alternative.")
(defvoo nntp-rlogin-parameters '("telnet" "-8" "${NNTPSERVER:=news}" "nntp")
"*Parameters to `nntp-open-rlogin'.
That function may be used as `nntp-open-connection-function'. In that
case, this list will be used as the parameter list given to rsh.")
(defvoo nntp-rlogin-user-name nil
"*User name on remote system when using the rlogin connect method.")
(defvoo nntp-telnet-parameters
'("exec" "telnet" "-8" "${NNTPSERVER:=news}" "nntp")
"*Parameters to `nntp-open-telnet'.
That function may be used as `nntp-open-connection-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.")
(defun nntp-open-telnet (buffer)
(save-excursion
(set-buffer buffer)
(erase-buffer)
(let ((proc (apply
'start-process
"nntpd" buffer nntp-telnet-command nntp-telnet-switches))
(case-fold-search t))
(when (memq (process-status proc) '(open run))
(nntp-wait-for-string "^r?telnet")
(process-send-string proc "set escape \^X\n")
(cond
((and nntp-open-telnet-envuser nntp-telnet-user-name)
(process-send-string proc (concat "open " "-l" nntp-telnet-user-name
nntp-address "\n")))
(t
(process-send-string proc (concat "open " nntp-address "\n"))))
(cond
((not nntp-open-telnet-envuser)
(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
(read-passwd "Password: ")))
"\n"))
(nntp-wait-for-string nntp-telnet-shell-prompt)
(process-send-string
proc (concat (mapconcat 'identity nntp-telnet-parameters " ") "\n"))
(nntp-wait-for-string "^\r*20[01]")
(beginning-of-line)
(delete-region (point-min) (point))
(process-send-string proc "\^]")
(nntp-wait-for-string "^r?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-open-rlogin (buffer)
"Open a connection to SERVER using rsh."
(let ((proc (if nntp-rlogin-user-name
(apply 'start-process
"nntpd" buffer nntp-rlogin-program
nntp-address "-l" nntp-rlogin-user-name
nntp-rlogin-parameters)
(apply 'start-process
"nntpd" buffer nntp-rlogin-program nntp-address
nntp-rlogin-parameters))))
(save-excursion
(set-buffer buffer)
(nntp-wait-for-string "^\r*20[01]")
(beginning-of-line)
(delete-region (point-min) (point))
proc)))
(defun nntp-open-telnet-stream (buffer)
"Open a nntp connection by telnet'ing the news server.
Please refer to the following variables to customize the connection:
- `nntp-pre-command',
- `nntp-telnet-command',
- `nntp-telnet-switches',
- `nntp-address',
- `nntp-port-number',
- `nntp-end-of-line'."
(let ((command `(,nntp-telnet-command
,@nntp-telnet-switches
,nntp-address ,nntp-port-number))
proc)
(and nntp-pre-command
(push nntp-pre-command command))
(setq proc (apply 'start-process "nntpd" buffer command))
(save-excursion
(set-buffer buffer)
(nntp-wait-for-string "^\r*20[01]")
(beginning-of-line)
(delete-region (point-min) (point))
proc)))
(defun nntp-open-via-rlogin-and-telnet (buffer)
"Open a connection to an nntp server through an intermediate host.
First rlogin to the remote host, and then telnet the real news server
from there.
Please refer to the following variables to customize the connection:
- `nntp-pre-command',
- `nntp-via-rlogin-command',
- `nntp-via-rlogin-command-switches',
- `nntp-via-user-name',
- `nntp-via-address',
- `nntp-telnet-command',
- `nntp-telnet-switches',
- `nntp-address',
- `nntp-port-number',
- `nntp-end-of-line'."
(let ((command `(,nntp-via-address
,nntp-telnet-command
,@nntp-telnet-switches))
proc)
(when nntp-via-user-name
(setq command `("-l" ,nntp-via-user-name ,@command)))
(when nntp-via-rlogin-command-switches
(setq command (append nntp-via-rlogin-command-switches command)))
(push nntp-via-rlogin-command command)
(and nntp-pre-command
(push nntp-pre-command command))
(setq proc (apply 'start-process "nntpd" buffer command))
(save-excursion
(set-buffer buffer)
(nntp-wait-for-string "^r?telnet")
(process-send-string proc (concat "open " nntp-address
" " nntp-port-number "\n"))
(nntp-wait-for-string "^\r*20[01]")
(beginning-of-line)
(delete-region (point-min) (point))
(process-send-string proc "\^]")
(nntp-wait-for-string "^r?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-open-via-telnet-and-telnet (buffer)
"Open a connection to an nntp server through an intermediate host.
First telnet the remote host, and then telnet the real news server
from there.
Please refer to the following variables to customize the connection:
- `nntp-pre-command',
- `nntp-via-telnet-command',
- `nntp-via-telnet-switches',
- `nntp-via-address',
- `nntp-via-envuser',
- `nntp-via-user-name',
- `nntp-via-user-password',
- `nntp-via-shell-prompt',
- `nntp-telnet-command',
- `nntp-telnet-switches',
- `nntp-address',
- `nntp-port-number',
- `nntp-end-of-line'."
(save-excursion
(set-buffer buffer)
(erase-buffer)
(let ((command `(,nntp-via-telnet-command ,@nntp-via-telnet-switches))
(case-fold-search t)
proc)
(and nntp-pre-command (push nntp-pre-command command))
(setq proc (apply 'start-process "nntpd" buffer command))
(when (memq (process-status proc) '(open run))
(nntp-wait-for-string "^r?telnet")
(process-send-string proc "set escape \^X\n")
(cond
((and nntp-via-envuser nntp-via-user-name)
(process-send-string proc (concat "open " "-l" nntp-via-user-name
nntp-via-address "\n")))
(t
(process-send-string proc (concat "open " nntp-via-address
"\n"))))
(when (not nntp-via-envuser)
(nntp-wait-for-string "^\r*.?login:")
(process-send-string proc
(concat
(or nntp-via-user-name
(setq nntp-via-user-name
(read-string "login: ")))
"\n")))
(nntp-wait-for-string "^\r*.?password:")
(process-send-string proc
(concat
(or nntp-via-user-password
(setq nntp-via-user-password
(read-passwd "Password: ")))
"\n"))
(nntp-wait-for-string nntp-via-shell-prompt)
(let ((real-telnet-command `("exec"
,nntp-telnet-command
,@nntp-telnet-switches
,nntp-address
,nntp-port-number)))
(process-send-string proc
(concat (mapconcat 'identity
real-telnet-command " ")
"\n")))
(nntp-wait-for-string "^\r*20[01]")
(beginning-of-line)
(delete-region (point-min) (point))
(process-send-string proc "\^]")
(nntp-wait-for-string "^r?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)))
(provide 'nntp)