mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
243 lines
8.8 KiB
EmacsLisp
243 lines
8.8 KiB
EmacsLisp
;;; telnet.el --- run a telnet session from within an Emacs buffer
|
|
|
|
;;; Copyright (C) 1985, 1988, 1992 Free Software Foundation, Inc.
|
|
|
|
;; Author: William F. Schelter
|
|
;; Maintainer: FSF
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software; you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation; either version 2, or (at your option)
|
|
;; any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; 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.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This mode is intended to be used for telnet or rsh to a remode host;
|
|
;; `telnet' and `rsh' are the two entry points. Multiple telnet or rsh
|
|
;; sessions are supported.
|
|
;;
|
|
;; Normally, input is sent to the remote telnet/rsh line-by-line, as you
|
|
;; type RET or LFD. C-c C-c sends a C-c to the remote immediately;
|
|
;; C-c C-z sends C-z immediately. C-c C-q followed by any character
|
|
;; sends that character immediately.
|
|
;;
|
|
;; All RET characters are filtered out of the output coming back from the
|
|
;; remote system. The mode tries to do other useful translations based
|
|
;; on what it sees coming back from the other system before the password
|
|
;; query. It knows about UNIX, ITS, TOPS-20 and Explorer systems.
|
|
|
|
;;; Code:
|
|
|
|
;; to do fix software types for lispm:
|
|
;; to eval current expression. Also to try to send escape keys correctly.
|
|
;; essentially we'll want the rubout-handler off.
|
|
|
|
;; filter is simplistic but should be okay for typical shell usage.
|
|
;; needs hacking if it is going to deal with asynchronous output in a sane
|
|
;; manner
|
|
|
|
(require 'comint)
|
|
|
|
(defvar telnet-new-line "\r")
|
|
(defvar telnet-mode-map nil)
|
|
(defvar telnet-prompt-pattern "^[^#$%>\n]*[#$%>] *")
|
|
(defvar telnet-replace-c-g nil)
|
|
(make-variable-buffer-local
|
|
(defvar telnet-remote-echoes t
|
|
"True if the telnet process will echo input."))
|
|
(make-variable-buffer-local
|
|
(defvar telnet-interrupt-string "\C-c" "String sent by C-c."))
|
|
|
|
(defvar telnet-count 0
|
|
"Number of output strings from telnet process while looking for password.")
|
|
(make-variable-buffer-local 'telnet-count)
|
|
|
|
(defvar telnet-rsh-program
|
|
(if (memq system-type '(hpux usg-unix-v))
|
|
"remsh" "rsh")
|
|
"Program to run for opening a remote shell.")
|
|
|
|
(defvar telnet-initial-count -50
|
|
"Initial value of `telnet-count'. Should be set to the negative of the
|
|
number of terminal writes telnet will make setting up the host connection.")
|
|
|
|
(defvar telnet-maximum-count 4
|
|
"Maximum value `telnet-count' can have.
|
|
After this many passes, we stop looking for initial setup data.
|
|
Should be set to the number of terminal writes telnet will make
|
|
rejecting one login and prompting for the again for a username and password.")
|
|
|
|
(defun telnet-interrupt-subjob ()
|
|
(interactive)
|
|
"Interrupt the program running through telnet on the remote host."
|
|
(send-string nil telnet-interrupt-string))
|
|
|
|
(defun telnet-c-z ()
|
|
(interactive)
|
|
(send-string nil "\C-z"))
|
|
|
|
(defun send-process-next-char ()
|
|
(interactive)
|
|
(send-string nil
|
|
(char-to-string
|
|
(let ((inhibit-quit t))
|
|
(prog1 (read-char)
|
|
(setq quit-flag nil))))))
|
|
|
|
; initialization on first load.
|
|
(if telnet-mode-map
|
|
nil
|
|
(setq telnet-mode-map (copy-keymap comint-mode-map))
|
|
(define-key telnet-mode-map "\C-m" 'telnet-send-input)
|
|
; (define-key telnet-mode-map "\C-j" 'telnet-send-input)
|
|
(define-key telnet-mode-map "\C-c\C-q" 'send-process-next-char)
|
|
(define-key telnet-mode-map "\C-c\C-c" 'telnet-interrupt-subjob)
|
|
(define-key telnet-mode-map "\C-c\C-z" 'telnet-c-z))
|
|
|
|
;;maybe should have a flag for when have found type
|
|
(defun telnet-check-software-type-initialize (string)
|
|
"Tries to put correct initializations in. Needs work."
|
|
(let ((case-fold-search t))
|
|
(cond ((string-match "unix" string)
|
|
(setq telnet-prompt-pattern comint-prompt-regexp)
|
|
(setq telnet-new-line "\n"))
|
|
((string-match "tops-20" string) ;;maybe add telnet-replace-c-g
|
|
(setq telnet-prompt-pattern "[@>]*"))
|
|
((string-match "its" string)
|
|
(setq telnet-prompt-pattern "^[^*>\n]*[*>] *"))
|
|
((string-match "explorer" string) ;;explorer telnet needs work
|
|
(setq telnet-replace-c-g ?\n))))
|
|
(setq comint-prompt-regexp telnet-prompt-pattern))
|
|
|
|
(defun telnet-initial-filter (proc string)
|
|
;For reading up to and including password; also will get machine type.
|
|
(cond ((string-match "No such host" string)
|
|
(kill-buffer (process-buffer proc))
|
|
(error "No such host."))
|
|
((string-match "passw" string)
|
|
(telnet-filter proc string)
|
|
(let* ((echo-keystrokes 0)
|
|
(password (read-password)))
|
|
(setq telnet-count 0)
|
|
(send-string proc (concat password telnet-new-line))))
|
|
(t (telnet-check-software-type-initialize string)
|
|
(telnet-filter proc string)
|
|
(cond ((> telnet-count telnet-maximum-count)
|
|
(set-process-filter proc 'telnet-filter))
|
|
(t (setq telnet-count (1+ telnet-count)))))))
|
|
|
|
;; Identical to comint-simple-send, except that it sends telnet-new-line
|
|
;; instead of "\n".
|
|
(defun telnet-simple-send (proc string)
|
|
(comint-send-string proc string)
|
|
(comint-send-string proc telnet-new-line))
|
|
|
|
(defun telnet-filter (proc string)
|
|
(save-excursion
|
|
(set-buffer (process-buffer proc))
|
|
(let* ((last-insertion (marker-position (process-mark proc)))
|
|
(delta (- (point) last-insertion))
|
|
(ie (and comint-last-input-end
|
|
(marker-position comint-last-input-end)))
|
|
(w (get-buffer-window (current-buffer)))
|
|
(ws (and w (window-start w))))
|
|
(goto-char last-insertion)
|
|
(insert-before-markers string)
|
|
(set-marker (process-mark proc) (point))
|
|
(if ws (set-window-start w ws t))
|
|
(if ie (set-marker comint-last-input-end ie))
|
|
(while (progn (skip-chars-backward "^\C-m" last-insertion)
|
|
(> (point) last-insertion))
|
|
(delete-region (1- (point)) (point)))
|
|
(goto-char (process-mark proc))
|
|
(and telnet-replace-c-g
|
|
(subst-char-in-region last-insertion (point) ?\C-g
|
|
telnet-replace-c-g t))
|
|
;; If point is after the insertion place, move it
|
|
;; along with the text.
|
|
(if (> delta 0)
|
|
(goto-char (+ (process-mark proc) delta))))))
|
|
|
|
(defun telnet-send-input ()
|
|
(interactive)
|
|
; (comint-send-input telnet-new-line telnet-remote-echoes)
|
|
(comint-send-input)
|
|
(if telnet-remote-echoes
|
|
(delete-region comint-last-input-start
|
|
comint-last-input-end)))
|
|
|
|
;;;###autoload
|
|
(defun telnet (host)
|
|
"Open a network login connection to host named HOST (a string).
|
|
Communication with HOST is recorded in a buffer *HOST-telnet*.
|
|
Normally input is edited in Emacs and sent a line at a time."
|
|
(interactive "sOpen telnet connection to host: ")
|
|
(setq host (comint-canonicalize-args host))
|
|
(let* ((comint-delimiter-argument-list '(" " "\t"))
|
|
(name (concat (comint-arguments host 0 nil) "-telnet" ))
|
|
(buffer (get-buffer (concat "*" name "*"))))
|
|
(if (and buffer (get-buffer-process buffer))
|
|
(switch-to-buffer (concat "*" name "*"))
|
|
(switch-to-buffer (make-comint name "telnet"))
|
|
(set-process-filter (get-process name) 'telnet-initial-filter)
|
|
;; Don't send the `open' cmd till telnet is ready for it.
|
|
(accept-process-output (get-process name))
|
|
(erase-buffer)
|
|
(send-string name (concat "open " host "\n"))
|
|
(telnet-mode)
|
|
(setq comint-input-sender 'telnet-simple-send)
|
|
(setq telnet-count telnet-initial-count))))
|
|
|
|
(defun telnet-mode ()
|
|
"This mode is for using telnet (or rsh) from a buffer to another host.
|
|
It has most of the same commands as comint-mode.
|
|
There is a variable ``telnet-interrupt-string'' which is the character
|
|
sent to try to stop execution of a job on the remote host.
|
|
Data is sent to the remote host when RET is typed.
|
|
|
|
\\{telnet-mode-map}
|
|
"
|
|
(interactive)
|
|
(comint-mode)
|
|
(setq major-mode 'telnet-mode
|
|
mode-name "Telnet"
|
|
comint-prompt-regexp telnet-prompt-pattern)
|
|
(use-local-map telnet-mode-map)
|
|
(run-hooks 'telnet-mode-hook))
|
|
|
|
;;;###autoload
|
|
(defun rsh (host)
|
|
"Open a network login connection to host named HOST (a string).
|
|
Communication with HOST is recorded in a buffer *HOST-rsh*.
|
|
Normally input is edited in Emacs and sent a line at a time."
|
|
(interactive "sOpen rsh connection to host: ")
|
|
(require 'shell)
|
|
(let ((name (concat host "-rsh" )))
|
|
(switch-to-buffer (make-comint name telnet-rsh-program nil host))
|
|
(set-process-filter (get-process name) 'telnet-initial-filter)
|
|
(telnet-mode)
|
|
(setq telnet-count -16)))
|
|
|
|
(defun read-password ()
|
|
(let ((answ "") tem)
|
|
(message "Reading password...")
|
|
(while (prog1 (not (memq (setq tem (read-char)) '(?\C-m ?\n ?\C-g)))
|
|
(setq quit-flag nil))
|
|
(setq answ (concat answ (char-to-string tem))))
|
|
answ))
|
|
|
|
(provide 'telnet)
|
|
|
|
;;; telnet.el ends here
|