;;; nntp.el --- nntp access for Gnus
;; Copyright (C) 1987, 1988, 1989, 1990, 1992, 1993, 1994, 1995, 1996,
-;; 1997, 1998, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+;; 1997, 1998, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Katsumi Yamaoka <yamaoka@jpl.org>
Indirect connections:
- `nntp-open-via-rlogin-and-telnet',
+- `nntp-open-via-rlogin-and-netcat',
- `nntp-open-via-telnet-and-telnet'.")
(defvoo nntp-pre-command nil
(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.")
+This command is used by the methods `nntp-open-telnet-stream',
+`nntp-open-via-rlogin-and-telnet' and `nntp-open-via-telnet-and-telnet'.")
(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 and indirect connection method (nntp-open-via-*).")
+This is \"\\r\\n\" by default, but should be \"\\n\" when using and
+indirect telnet connection method (nntp-open-via-*-and-telnet).")
(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.")
+This command is used by the methods `nntp-open-via-rlogin-and-telnet'
+and `nntp-open-via-rlogin-and-netcat'. 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'.
(defvoo nntp-via-telnet-switches '("-8")
"*Switches given to the telnet command `nntp-via-telnet-command'.")
+(defvoo nntp-via-netcat-command "nc"
+ "*Netcat command used to connect to the nntp server.
+This command is used by the `nntp-open-via-rlogin-and-netcat' method.")
+
+(defvoo nntp-via-netcat-switches nil
+ "*Switches given to the netcat command `nntp-via-netcat-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.")
+This variable is used by the various nntp-open-via-* methods.")
(defvoo nntp-via-user-password nil
"*Password to use to log in on an intermediate host with.
(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.")
+This variable is used by the various nntp-open-via-* methods.")
(defvoo nntp-via-envuser nil
"*Whether both telnet client and server support the ENVIRON option.
(kill-buffer buffer)
(nnheader-init-server-buffer)))
+(defun nntp-erase-buffer (buffer)
+ "Erase contents of BUFFER."
+ (with-current-buffer buffer
+ (erase-buffer)))
+
(defsubst nntp-find-connection (buffer)
"Find the connection delivering to BUFFER."
(let ((alist nntp-connection-alist)
(if process
(progn
(unless (or nntp-inhibit-erase nnheader-callback-function)
- (save-excursion
- (set-buffer (process-buffer process))
- (erase-buffer)))
+ (nntp-erase-buffer (process-buffer process)))
(condition-case err
(progn
(when command
"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)))
+ (nntp-erase-buffer nntp-server-buffer))
(let* ((command (mapconcat 'identity strings " "))
(process (nntp-find-connection nntp-server-buffer))
(buffer (and process (process-buffer process)))
"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)))
+ (nntp-erase-buffer nntp-server-buffer))
(let* ((command (mapconcat 'identity strings " "))
(process (nntp-find-connection nntp-server-buffer))
(buffer (and process (process-buffer process)))
(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) (point-at-bol))))
- )))
+ (set-buffer buffer)
+ (goto-char pos)
+ (if (looking-at (regexp-quote command))
+ (delete-region pos (progn (forward-line 1) (point-at-bol))))
+ )))
(nnheader-report 'nntp "Couldn't open connection to %s."
nntp-address))))
"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-erase-buffer
+ (nntp-find-connection-buffer nntp-server-buffer)))
(nntp-encode-text)
(let ((multibyte (and (boundp 'enable-multibyte-characters)
(symbol-value 'enable-multibyte-characters))))
(catch 'done
(save-excursion
;; Erase nntp-server-buffer before nntp-inhibit-erase.
- (set-buffer nntp-server-buffer)
- (erase-buffer)
+ (nntp-erase-buffer nntp-server-buffer)
(set-buffer (nntp-find-connection-buffer nntp-server-buffer))
;; The first time this is run, this variable is `try'. So we
;; try.
(funcall nntp-authinfo-function)
;; We have to re-send the function that was interrupted by
;; the authinfo request.
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer))
+ (nntp-erase-buffer nntp-server-buffer)
(nntp-send-string process last)))
(defun nntp-make-process-buffer (buffer)
(nntp-send-command "^[245].*\n" "GROUP" group)
(setcar (cddr entry) group)
(erase-buffer)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer))))))))
+ (nntp-erase-buffer nntp-server-buffer)))))))
(defun nntp-decode-text (&optional cr-only)
"Decode the text in the current buffer."
(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)
- (setq nntp-server-xover nil)))
+ (nntp-erase-buffer nntp-server-buffer)
+ (setq nntp-server-xover nil))
nntp-server-xover))))
(defun nntp-find-group-and-number (&optional group)
(delete-region (point) (point-max)))
proc))
+(defun nntp-open-via-rlogin-and-netcat (buffer)
+ "Open a connection to an nntp server through an intermediate host.
+First rlogin to the remote host, and then connect to the real news
+server from there using the netcat command.
+
+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-via-netcat-command',
+- `nntp-via-netcat-switches',
+- `nntp-address',
+- `nntp-port-number',
+- `nntp-end-of-line'."
+ (let ((command `(,@(when nntp-pre-command
+ (list nntp-pre-command))
+ ,nntp-via-rlogin-command
+ ,@(when nntp-via-rlogin-command-switches
+ nntp-via-rlogin-command-switches)
+ ,@(when nntp-via-user-name
+ (list "-l" nntp-via-user-name))
+ ,nntp-via-address
+ ,nntp-via-netcat-command
+ ,@nntp-via-netcat-switches
+ ,nntp-address
+ ,nntp-port-number)))
+ (apply 'start-process "nntpd" buffer command)))
+
(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
projects / elisp / gnus.git- / blobdiff