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c88ab9ce | 1 | ;;; telnet.el --- run a telnet session from within an Emacs buffer |
22a89ee8 | 2 | |
b578f267 | 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 | |
b578f267 EN |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
1d23795a | 24 | |
b5014350 ER |
25 | ;;; Commentary: |
26 | ||
27 | ;; This mode is intended to be used for telnet or rsh to a remode host; | |
28 | ;; `telnet' and `rsh' are the two entry points. Multiple telnet or rsh | |
29 | ;; sessions are supported. | |
30 | ;; | |
31 | ;; Normally, input is sent to the remote telnet/rsh line-by-line, as you | |
32 | ;; type RET or LFD. C-c C-c sends a C-c to the remote immediately; | |
33 | ;; C-c C-z sends C-z immediately. C-c C-q followed by any character | |
34 | ;; sends that character immediately. | |
35 | ;; | |
36 | ;; All RET characters are filtered out of the output coming back from the | |
37 | ;; remote system. The mode tries to do other useful translations based | |
38 | ;; on what it sees coming back from the other system before the password | |
39 | ;; query. It knows about UNIX, ITS, TOPS-20 and Explorer systems. | |
40 | ||
22a89ee8 | 41 | ;;; Code: |
1d23795a | 42 | |
b5014350 ER |
43 | ;; to do fix software types for lispm: |
44 | ;; to eval current expression. Also to try to send escape keys correctly. | |
45 | ;; essentially we'll want the rubout-handler off. | |
1d23795a | 46 | |
47 | ;; filter is simplistic but should be okay for typical shell usage. | |
48 | ;; needs hacking if it is going to deal with asynchronous output in a sane | |
49 | ;; manner | |
50 | ||
51 | (require 'comint) | |
492878e4 | 52 | |
1d23795a | 53 | (defvar telnet-new-line "\r") |
54 | (defvar telnet-mode-map nil) | |
e3683fc7 | 55 | (defvar telnet-prompt-pattern "^[^#$%>\n]*[#$%>] *") |
1d23795a | 56 | (defvar telnet-replace-c-g nil) |
57 | (make-variable-buffer-local | |
58 | (defvar telnet-remote-echoes t | |
59 | "True if the telnet process will echo input.")) | |
60 | (make-variable-buffer-local | |
61 | (defvar telnet-interrupt-string "\C-c" "String sent by C-c.")) | |
62 | ||
63 | (defvar telnet-count 0 | |
f603e513 RS |
64 | "Number of output strings from telnet process while looking for password.") |
65 | (make-variable-buffer-local 'telnet-count) | |
66 | ||
c4ffc07f RS |
67 | (defvar telnet-program "telnet" |
68 | "Program to run to open a telnet connection.") | |
69 | ||
1d23795a | 70 | (defvar telnet-initial-count -50 |
1433a222 | 71 | "Initial value of `telnet-count'. Should be set to the negative of the |
1d23795a | 72 | number of terminal writes telnet will make setting up the host connection.") |
73 | ||
74 | (defvar telnet-maximum-count 4 | |
1433a222 | 75 | "Maximum value `telnet-count' can have. |
1d23795a | 76 | After this many passes, we stop looking for initial setup data. |
77 | Should be set to the number of terminal writes telnet will make | |
846731a5 | 78 | rejecting one login and prompting again for a username and password.") |
1d23795a | 79 | |
80 | (defun telnet-interrupt-subjob () | |
81 | (interactive) | |
82 | "Interrupt the program running through telnet on the remote host." | |
83 | (send-string nil telnet-interrupt-string)) | |
84 | ||
85 | (defun telnet-c-z () | |
86 | (interactive) | |
87 | (send-string nil "\C-z")) | |
88 | ||
89 | (defun send-process-next-char () | |
90 | (interactive) | |
91 | (send-string nil | |
92 | (char-to-string | |
93 | (let ((inhibit-quit t)) | |
94 | (prog1 (read-char) | |
95 | (setq quit-flag nil)))))) | |
96 | ||
97 | ; initialization on first load. | |
98 | (if telnet-mode-map | |
99 | nil | |
cab10b76 | 100 | (setq telnet-mode-map (nconc (make-sparse-keymap) comint-mode-map)) |
1d23795a | 101 | (define-key telnet-mode-map "\C-m" 'telnet-send-input) |
102 | ; (define-key telnet-mode-map "\C-j" 'telnet-send-input) | |
103 | (define-key telnet-mode-map "\C-c\C-q" 'send-process-next-char) | |
104 | (define-key telnet-mode-map "\C-c\C-c" 'telnet-interrupt-subjob) | |
105 | (define-key telnet-mode-map "\C-c\C-z" 'telnet-c-z)) | |
106 | ||
107 | ;;maybe should have a flag for when have found type | |
108 | (defun telnet-check-software-type-initialize (string) | |
109 | "Tries to put correct initializations in. Needs work." | |
110 | (let ((case-fold-search t)) | |
111 | (cond ((string-match "unix" string) | |
112 | (setq telnet-prompt-pattern comint-prompt-regexp) | |
113 | (setq telnet-new-line "\n")) | |
114 | ((string-match "tops-20" string) ;;maybe add telnet-replace-c-g | |
115 | (setq telnet-prompt-pattern "[@>]*")) | |
116 | ((string-match "its" string) | |
e3683fc7 | 117 | (setq telnet-prompt-pattern "^[^*>\n]*[*>] *")) |
1d23795a | 118 | ((string-match "explorer" string) ;;explorer telnet needs work |
119 | (setq telnet-replace-c-g ?\n)))) | |
120 | (setq comint-prompt-regexp telnet-prompt-pattern)) | |
121 | ||
122 | (defun telnet-initial-filter (proc string) | |
123 | ;For reading up to and including password; also will get machine type. | |
124 | (cond ((string-match "No such host" string) | |
125 | (kill-buffer (process-buffer proc)) | |
126 | (error "No such host.")) | |
127 | ((string-match "passw" string) | |
128 | (telnet-filter proc string) | |
25e907da KH |
129 | (setq telnet-count 0) |
130 | (send-string proc (concat (comint-read-noecho "Password: " t) | |
131 | telnet-new-line))) | |
1d23795a | 132 | (t (telnet-check-software-type-initialize string) |
133 | (telnet-filter proc string) | |
134 | (cond ((> telnet-count telnet-maximum-count) | |
135 | (set-process-filter proc 'telnet-filter)) | |
136 | (t (setq telnet-count (1+ telnet-count))))))) | |
137 | ||
3ed5409e RS |
138 | ;; Identical to comint-simple-send, except that it sends telnet-new-line |
139 | ;; instead of "\n". | |
140 | (defun telnet-simple-send (proc string) | |
141 | (comint-send-string proc string) | |
142 | (comint-send-string proc telnet-new-line)) | |
143 | ||
1d23795a | 144 | (defun telnet-filter (proc string) |
e3683fc7 RS |
145 | (save-excursion |
146 | (set-buffer (process-buffer proc)) | |
147 | (let* ((last-insertion (marker-position (process-mark proc))) | |
148 | (delta (- (point) last-insertion)) | |
149 | (ie (and comint-last-input-end | |
150 | (marker-position comint-last-input-end))) | |
151 | (w (get-buffer-window (current-buffer))) | |
152 | (ws (and w (window-start w)))) | |
153 | (goto-char last-insertion) | |
154 | (insert-before-markers string) | |
155 | (set-marker (process-mark proc) (point)) | |
156 | (if ws (set-window-start w ws t)) | |
157 | (if ie (set-marker comint-last-input-end ie)) | |
158 | (while (progn (skip-chars-backward "^\C-m" last-insertion) | |
159 | (> (point) last-insertion)) | |
160 | (delete-region (1- (point)) (point))) | |
1d23795a | 161 | (goto-char (process-mark proc)) |
e3683fc7 RS |
162 | (and telnet-replace-c-g |
163 | (subst-char-in-region last-insertion (point) ?\C-g | |
164 | telnet-replace-c-g t)) | |
165 | ;; If point is after the insertion place, move it | |
166 | ;; along with the text. | |
167 | (if (> delta 0) | |
168 | (goto-char (+ (process-mark proc) delta)))))) | |
1d23795a | 169 | |
170 | (defun telnet-send-input () | |
171 | (interactive) | |
492878e4 JB |
172 | ; (comint-send-input telnet-new-line telnet-remote-echoes) |
173 | (comint-send-input) | |
174 | (if telnet-remote-echoes | |
175 | (delete-region comint-last-input-start | |
176 | comint-last-input-end))) | |
1d23795a | 177 | |
f714317c | 178 | ;;;###autoload (add-hook 'same-window-regexps "\\*telnet-.*\\*\\(\\|<[0-9]+>\\)") |
f3453e58 | 179 | |
f9f9507e | 180 | ;;;###autoload |
901249a3 | 181 | (defun telnet (host) |
1d23795a | 182 | "Open a network login connection to host named HOST (a string). |
e14e9e26 | 183 | Communication with HOST is recorded in a buffer `*telnet-HOST*'. |
1d23795a | 184 | Normally input is edited in Emacs and sent a line at a time." |
185 | (interactive "sOpen telnet connection to host: ") | |
0cf4932f | 186 | (let* ((comint-delimiter-argument-list '(?\ ?\t)) |
e14e9e26 | 187 | (name (concat "telnet-" (comint-arguments host 0 nil) )) |
f0ed29b2 RS |
188 | (buffer (get-buffer (concat "*" name "*"))) |
189 | process) | |
901249a3 | 190 | (if (and buffer (get-buffer-process buffer)) |
f3453e58 RS |
191 | (pop-to-buffer (concat "*" name "*")) |
192 | (pop-to-buffer (make-comint name telnet-program)) | |
f0ed29b2 RS |
193 | (setq process (get-buffer-process (current-buffer))) |
194 | (set-process-filter process 'telnet-initial-filter) | |
901249a3 | 195 | ;; Don't send the `open' cmd till telnet is ready for it. |
f0ed29b2 | 196 | (accept-process-output process) |
901249a3 | 197 | (erase-buffer) |
f0ed29b2 | 198 | (send-string process (concat "open " host "\n")) |
901249a3 RS |
199 | (telnet-mode) |
200 | (setq comint-input-sender 'telnet-simple-send) | |
201 | (setq telnet-count telnet-initial-count)))) | |
1d23795a | 202 | |
203 | (defun telnet-mode () | |
b5014350 | 204 | "This mode is for using telnet (or rsh) from a buffer to another host. |
1433a222 | 205 | It has most of the same commands as comint-mode. |
1d23795a | 206 | There is a variable ``telnet-interrupt-string'' which is the character |
207 | sent to try to stop execution of a job on the remote host. | |
208 | Data is sent to the remote host when RET is typed. | |
209 | ||
210 | \\{telnet-mode-map} | |
b5014350 | 211 | " |
1d23795a | 212 | (interactive) |
213 | (comint-mode) | |
214 | (setq major-mode 'telnet-mode | |
215 | mode-name "Telnet" | |
216 | comint-prompt-regexp telnet-prompt-pattern) | |
217 | (use-local-map telnet-mode-map) | |
218 | (run-hooks 'telnet-mode-hook)) | |
219 | ||
7d21d421 | 220 | ;;;###autoload (add-hook 'same-window-regexps "\\*rsh-[^-]*\\*\\(\\|<[0-9]*>\\)") |
f3453e58 | 221 | |
b5014350 | 222 | ;;;###autoload |
901249a3 | 223 | (defun rsh (host) |
b5014350 | 224 | "Open a network login connection to host named HOST (a string). |
7d21d421 | 225 | Communication with HOST is recorded in a buffer `*rsh-HOST*'. |
b5014350 ER |
226 | Normally input is edited in Emacs and sent a line at a time." |
227 | (interactive "sOpen rsh connection to host: ") | |
228 | (require 'shell) | |
7d21d421 | 229 | (let ((name (concat "rsh-" host ))) |
f3453e58 | 230 | (pop-to-buffer (make-comint name remote-shell-program nil host)) |
b5014350 ER |
231 | (set-process-filter (get-process name) 'telnet-initial-filter) |
232 | (telnet-mode) | |
233 | (setq telnet-count -16))) | |
234 | ||
49116ac0 JB |
235 | (provide 'telnet) |
236 | ||
c88ab9ce | 237 | ;;; telnet.el ends here |