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c88ab9ce | 1 | ;;; telnet.el --- run a telnet session from within an Emacs buffer |
22a89ee8 | 2 | |
8f1204db | 3 | ;;; Copyright (C) 1985, 1988, 1992, 1994 Free Software Foundation, Inc. |
58142744 | 4 | |
22a89ee8 ER |
5 | ;; Author: William F. Schelter |
6 | ;; Maintainer: FSF | |
1d23795a | 7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
492878e4 | 12 | ;; the Free Software Foundation; either version 2, or (at your option) |
1d23795a | 13 | ;; any later version. |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
b5014350 ER |
24 | ;;; Commentary: |
25 | ||
26 | ;; This mode is intended to be used for telnet or rsh to a remode host; | |
27 | ;; `telnet' and `rsh' are the two entry points. Multiple telnet or rsh | |
28 | ;; sessions are supported. | |
29 | ;; | |
30 | ;; Normally, input is sent to the remote telnet/rsh line-by-line, as you | |
31 | ;; type RET or LFD. C-c C-c sends a C-c to the remote immediately; | |
32 | ;; C-c C-z sends C-z immediately. C-c C-q followed by any character | |
33 | ;; sends that character immediately. | |
34 | ;; | |
35 | ;; All RET characters are filtered out of the output coming back from the | |
36 | ;; remote system. The mode tries to do other useful translations based | |
37 | ;; on what it sees coming back from the other system before the password | |
38 | ;; query. It knows about UNIX, ITS, TOPS-20 and Explorer systems. | |
39 | ||
22a89ee8 | 40 | ;;; Code: |
1d23795a | 41 | |
b5014350 ER |
42 | ;; to do fix software types for lispm: |
43 | ;; to eval current expression. Also to try to send escape keys correctly. | |
44 | ;; essentially we'll want the rubout-handler off. | |
1d23795a | 45 | |
46 | ;; filter is simplistic but should be okay for typical shell usage. | |
47 | ;; needs hacking if it is going to deal with asynchronous output in a sane | |
48 | ;; manner | |
49 | ||
50 | (require 'comint) | |
492878e4 | 51 | |
1d23795a | 52 | (defvar telnet-new-line "\r") |
53 | (defvar telnet-mode-map nil) | |
e3683fc7 | 54 | (defvar telnet-prompt-pattern "^[^#$%>\n]*[#$%>] *") |
1d23795a | 55 | (defvar telnet-replace-c-g nil) |
56 | (make-variable-buffer-local | |
57 | (defvar telnet-remote-echoes t | |
58 | "True if the telnet process will echo input.")) | |
59 | (make-variable-buffer-local | |
60 | (defvar telnet-interrupt-string "\C-c" "String sent by C-c.")) | |
61 | ||
62 | (defvar telnet-count 0 | |
f603e513 RS |
63 | "Number of output strings from telnet process while looking for password.") |
64 | (make-variable-buffer-local 'telnet-count) | |
65 | ||
c4ffc07f RS |
66 | (defvar telnet-program "telnet" |
67 | "Program to run to open a telnet connection.") | |
68 | ||
1d23795a | 69 | (defvar telnet-initial-count -50 |
1433a222 | 70 | "Initial value of `telnet-count'. Should be set to the negative of the |
1d23795a | 71 | number of terminal writes telnet will make setting up the host connection.") |
72 | ||
73 | (defvar telnet-maximum-count 4 | |
1433a222 | 74 | "Maximum value `telnet-count' can have. |
1d23795a | 75 | After this many passes, we stop looking for initial setup data. |
76 | Should be set to the number of terminal writes telnet will make | |
846731a5 | 77 | rejecting one login and prompting again for a username and password.") |
1d23795a | 78 | |
79 | (defun telnet-interrupt-subjob () | |
80 | (interactive) | |
81 | "Interrupt the program running through telnet on the remote host." | |
82 | (send-string nil telnet-interrupt-string)) | |
83 | ||
84 | (defun telnet-c-z () | |
85 | (interactive) | |
86 | (send-string nil "\C-z")) | |
87 | ||
88 | (defun send-process-next-char () | |
89 | (interactive) | |
90 | (send-string nil | |
91 | (char-to-string | |
92 | (let ((inhibit-quit t)) | |
93 | (prog1 (read-char) | |
94 | (setq quit-flag nil)))))) | |
95 | ||
96 | ; initialization on first load. | |
97 | (if telnet-mode-map | |
98 | nil | |
cab10b76 | 99 | (setq telnet-mode-map (nconc (make-sparse-keymap) comint-mode-map)) |
1d23795a | 100 | (define-key telnet-mode-map "\C-m" 'telnet-send-input) |
101 | ; (define-key telnet-mode-map "\C-j" 'telnet-send-input) | |
102 | (define-key telnet-mode-map "\C-c\C-q" 'send-process-next-char) | |
103 | (define-key telnet-mode-map "\C-c\C-c" 'telnet-interrupt-subjob) | |
104 | (define-key telnet-mode-map "\C-c\C-z" 'telnet-c-z)) | |
105 | ||
106 | ;;maybe should have a flag for when have found type | |
107 | (defun telnet-check-software-type-initialize (string) | |
108 | "Tries to put correct initializations in. Needs work." | |
109 | (let ((case-fold-search t)) | |
110 | (cond ((string-match "unix" string) | |
111 | (setq telnet-prompt-pattern comint-prompt-regexp) | |
112 | (setq telnet-new-line "\n")) | |
113 | ((string-match "tops-20" string) ;;maybe add telnet-replace-c-g | |
114 | (setq telnet-prompt-pattern "[@>]*")) | |
115 | ((string-match "its" string) | |
e3683fc7 | 116 | (setq telnet-prompt-pattern "^[^*>\n]*[*>] *")) |
1d23795a | 117 | ((string-match "explorer" string) ;;explorer telnet needs work |
118 | (setq telnet-replace-c-g ?\n)))) | |
119 | (setq comint-prompt-regexp telnet-prompt-pattern)) | |
120 | ||
121 | (defun telnet-initial-filter (proc string) | |
122 | ;For reading up to and including password; also will get machine type. | |
123 | (cond ((string-match "No such host" string) | |
124 | (kill-buffer (process-buffer proc)) | |
125 | (error "No such host.")) | |
126 | ((string-match "passw" string) | |
127 | (telnet-filter proc string) | |
25e907da KH |
128 | (setq telnet-count 0) |
129 | (send-string proc (concat (comint-read-noecho "Password: " t) | |
130 | telnet-new-line))) | |
1d23795a | 131 | (t (telnet-check-software-type-initialize string) |
132 | (telnet-filter proc string) | |
133 | (cond ((> telnet-count telnet-maximum-count) | |
134 | (set-process-filter proc 'telnet-filter)) | |
135 | (t (setq telnet-count (1+ telnet-count))))))) | |
136 | ||
3ed5409e RS |
137 | ;; Identical to comint-simple-send, except that it sends telnet-new-line |
138 | ;; instead of "\n". | |
139 | (defun telnet-simple-send (proc string) | |
140 | (comint-send-string proc string) | |
141 | (comint-send-string proc telnet-new-line)) | |
142 | ||
1d23795a | 143 | (defun telnet-filter (proc string) |
e3683fc7 RS |
144 | (save-excursion |
145 | (set-buffer (process-buffer proc)) | |
146 | (let* ((last-insertion (marker-position (process-mark proc))) | |
147 | (delta (- (point) last-insertion)) | |
148 | (ie (and comint-last-input-end | |
149 | (marker-position comint-last-input-end))) | |
150 | (w (get-buffer-window (current-buffer))) | |
151 | (ws (and w (window-start w)))) | |
152 | (goto-char last-insertion) | |
153 | (insert-before-markers string) | |
154 | (set-marker (process-mark proc) (point)) | |
155 | (if ws (set-window-start w ws t)) | |
156 | (if ie (set-marker comint-last-input-end ie)) | |
157 | (while (progn (skip-chars-backward "^\C-m" last-insertion) | |
158 | (> (point) last-insertion)) | |
159 | (delete-region (1- (point)) (point))) | |
1d23795a | 160 | (goto-char (process-mark proc)) |
e3683fc7 RS |
161 | (and telnet-replace-c-g |
162 | (subst-char-in-region last-insertion (point) ?\C-g | |
163 | telnet-replace-c-g t)) | |
164 | ;; If point is after the insertion place, move it | |
165 | ;; along with the text. | |
166 | (if (> delta 0) | |
167 | (goto-char (+ (process-mark proc) delta)))))) | |
1d23795a | 168 | |
169 | (defun telnet-send-input () | |
170 | (interactive) | |
492878e4 JB |
171 | ; (comint-send-input telnet-new-line telnet-remote-echoes) |
172 | (comint-send-input) | |
173 | (if telnet-remote-echoes | |
174 | (delete-region comint-last-input-start | |
175 | comint-last-input-end))) | |
1d23795a | 176 | |
f714317c | 177 | ;;;###autoload (add-hook 'same-window-regexps "\\*telnet-.*\\*\\(\\|<[0-9]+>\\)") |
f3453e58 | 178 | |
f9f9507e | 179 | ;;;###autoload |
901249a3 | 180 | (defun telnet (host) |
1d23795a | 181 | "Open a network login connection to host named HOST (a string). |
e14e9e26 | 182 | Communication with HOST is recorded in a buffer `*telnet-HOST*'. |
1d23795a | 183 | Normally input is edited in Emacs and sent a line at a time." |
184 | (interactive "sOpen telnet connection to host: ") | |
0cf4932f | 185 | (let* ((comint-delimiter-argument-list '(?\ ?\t)) |
e14e9e26 | 186 | (name (concat "telnet-" (comint-arguments host 0 nil) )) |
f0ed29b2 RS |
187 | (buffer (get-buffer (concat "*" name "*"))) |
188 | process) | |
901249a3 | 189 | (if (and buffer (get-buffer-process buffer)) |
f3453e58 RS |
190 | (pop-to-buffer (concat "*" name "*")) |
191 | (pop-to-buffer (make-comint name telnet-program)) | |
f0ed29b2 RS |
192 | (setq process (get-buffer-process (current-buffer))) |
193 | (set-process-filter process 'telnet-initial-filter) | |
901249a3 | 194 | ;; Don't send the `open' cmd till telnet is ready for it. |
f0ed29b2 | 195 | (accept-process-output process) |
901249a3 | 196 | (erase-buffer) |
f0ed29b2 | 197 | (send-string process (concat "open " host "\n")) |
901249a3 RS |
198 | (telnet-mode) |
199 | (setq comint-input-sender 'telnet-simple-send) | |
200 | (setq telnet-count telnet-initial-count)))) | |
1d23795a | 201 | |
202 | (defun telnet-mode () | |
b5014350 | 203 | "This mode is for using telnet (or rsh) from a buffer to another host. |
1433a222 | 204 | It has most of the same commands as comint-mode. |
1d23795a | 205 | There is a variable ``telnet-interrupt-string'' which is the character |
206 | sent to try to stop execution of a job on the remote host. | |
207 | Data is sent to the remote host when RET is typed. | |
208 | ||
209 | \\{telnet-mode-map} | |
b5014350 | 210 | " |
1d23795a | 211 | (interactive) |
212 | (comint-mode) | |
213 | (setq major-mode 'telnet-mode | |
214 | mode-name "Telnet" | |
215 | comint-prompt-regexp telnet-prompt-pattern) | |
216 | (use-local-map telnet-mode-map) | |
217 | (run-hooks 'telnet-mode-hook)) | |
218 | ||
7d21d421 | 219 | ;;;###autoload (add-hook 'same-window-regexps "\\*rsh-[^-]*\\*\\(\\|<[0-9]*>\\)") |
f3453e58 | 220 | |
b5014350 | 221 | ;;;###autoload |
901249a3 | 222 | (defun rsh (host) |
b5014350 | 223 | "Open a network login connection to host named HOST (a string). |
7d21d421 | 224 | Communication with HOST is recorded in a buffer `*rsh-HOST*'. |
b5014350 ER |
225 | Normally input is edited in Emacs and sent a line at a time." |
226 | (interactive "sOpen rsh connection to host: ") | |
227 | (require 'shell) | |
7d21d421 | 228 | (let ((name (concat "rsh-" host ))) |
f3453e58 | 229 | (pop-to-buffer (make-comint name remote-shell-program nil host)) |
b5014350 ER |
230 | (set-process-filter (get-process name) 'telnet-initial-filter) |
231 | (telnet-mode) | |
232 | (setq telnet-count -16))) | |
233 | ||
49116ac0 JB |
234 | (provide 'telnet) |
235 | ||
c88ab9ce | 236 | ;;; telnet.el ends here |