Commit | Line | Data |
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76550a57 ER |
1 | ;;; rlogin.el --- remote login interface |
2 | ||
b578f267 EN |
3 | ;; Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
4 | ||
8ae3bc9f | 5 | ;; Author: Noah Friedman |
76550a57 | 6 | ;; Maintainer: Noah Friedman <friedman@prep.ai.mit.edu> |
5d1dd3c0 | 7 | ;; Keywords: unix, comm |
76550a57 | 8 | |
b578f267 EN |
9 | ;; This file is part of GNU Emacs. |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
d9ecc911 ER |
12 | ;; it under the terms of the GNU General Public License as published by |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
b578f267 EN |
15 | |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
d9ecc911 ER |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
b578f267 | 20 | |
d9ecc911 | 21 | ;; You should have received a copy of the GNU General Public License |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
d9ecc911 | 25 | |
b578f267 | 26 | ;; $Id: rlogin.el,v 1.30 1995/10/27 22:34:50 friedman Exp erik $ |
32992017 | 27 | |
d9ecc911 ER |
28 | ;;; Commentary: |
29 | ||
0b899bd2 | 30 | ;; Support for remote logins using `rlogin'. |
32992017 NF |
31 | ;; This program is layered on top of shell.el; the code here only accounts |
32 | ;; for the variations needed to handle a remote process, e.g. directory | |
33 | ;; tracking and the sending of some special characters. | |
97b83d9d | 34 | |
d933a756 NF |
35 | ;; If you wish for rlogin mode to prompt you in the minibuffer for |
36 | ;; passwords when a password prompt appears, just enter m-x send-invisible | |
37 | ;; and type in your line, or add `comint-watch-for-password-prompt' to | |
38 | ;; `comint-output-filter-functions'. | |
c7986c18 | 39 | |
76550a57 ER |
40 | ;;; Code: |
41 | ||
c7986c18 | 42 | (require 'comint) |
10939dc6 | 43 | (require 'shell) |
c7986c18 ER |
44 | |
45 | (defvar rlogin-program "rlogin" | |
46 | "*Name of program to invoke rlogin") | |
47 | ||
8d30fe17 NF |
48 | (defvar rlogin-explicit-args nil |
49 | "*List of arguments to pass to rlogin on the command line.") | |
50 | ||
c7986c18 ER |
51 | (defvar rlogin-mode-hook nil |
52 | "*Hooks to run after setting current buffer to rlogin-mode.") | |
53 | ||
8ae3bc9f | 54 | (defvar rlogin-process-connection-type nil |
2601d12e NF |
55 | "*If non-`nil', use a pty for the local rlogin process. |
56 | If `nil', use a pipe (if pipes are supported on the local system). | |
8d30fe17 | 57 | |
8ae3bc9f NF |
58 | Generally it is better not to waste ptys on systems which have a static |
59 | number of them. On the other hand, some implementations of `rlogin' assume | |
60 | a pty is being used, and errors will result from using a pipe instead.") | |
8d30fe17 | 61 | |
32992017 | 62 | (defvar rlogin-directory-tracking-mode 'local |
ce992678 | 63 | "*Control whether and how to do directory tracking in an rlogin buffer. |
32992017 | 64 | |
ce992678 | 65 | nil means don't do directory tracking. |
32992017 | 66 | |
ce992678 | 67 | t means do so using an ftp remote file name. |
32992017 | 68 | |
ce992678 RS |
69 | Any other value means do directory tracking using local file names. |
70 | This works only if the remote machine and the local one | |
32992017 NF |
71 | share the same directories (through NFS). This is the default. |
72 | ||
73 | This variable becomes local to a buffer when set in any fashion for it. | |
74 | ||
75 | It is better to use the function of the same name to change the behavior of | |
76 | directory tracking in an rlogin session once it has begun, rather than | |
77 | simply setting this variable, since the function does the necessary | |
78 | re-synching of directories.") | |
79 | ||
80 | (make-variable-buffer-local 'rlogin-directory-tracking-mode) | |
81 | ||
82 | (defvar rlogin-host nil | |
83 | "*The name of the remote host. This variable is buffer-local.") | |
84 | ||
85 | (defvar rlogin-remote-user nil | |
86 | "*The username used on the remote host. | |
87 | This variable is buffer-local and defaults to your local user name. | |
88 | If rlogin is invoked with the `-l' option to specify the remote username, | |
89 | this variable is set from that.") | |
97b83d9d | 90 | |
c7986c18 ER |
91 | ;; Initialize rlogin mode map. |
92 | (defvar rlogin-mode-map '()) | |
2601d12e | 93 | (cond |
32992017 NF |
94 | ((null rlogin-mode-map) |
95 | (setq rlogin-mode-map (if (consp shell-mode-map) | |
96 | (cons 'keymap shell-mode-map) | |
97 | (copy-keymap shell-mode-map))) | |
98 | (define-key rlogin-mode-map "\C-c\C-c" 'rlogin-send-Ctrl-C) | |
99 | (define-key rlogin-mode-map "\C-c\C-d" 'rlogin-send-Ctrl-D) | |
100 | (define-key rlogin-mode-map "\C-c\C-z" 'rlogin-send-Ctrl-Z) | |
101 | (define-key rlogin-mode-map "\C-c\C-\\" 'rlogin-send-Ctrl-backslash) | |
102 | (define-key rlogin-mode-map "\C-d" 'rlogin-delchar-or-send-Ctrl-D) | |
103 | (define-key rlogin-mode-map "\C-i" 'rlogin-tab-or-complete))) | |
c7986c18 | 104 | |
32992017 | 105 | \f |
67398f34 RS |
106 | ;;;###autoload (add-hook 'same-window-regexps "^\\*rlogin-.*\\*\\(\\|<[0-9]+>\\)") |
107 | ||
cd17ae3f RM |
108 | (defvar rlogin-history nil) |
109 | ||
0b899bd2 | 110 | ;;;###autoload |
965f7ac9 | 111 | (defun rlogin (input-args &optional buffer) |
8d30fe17 NF |
112 | "Open a network login connection to HOST via the `rlogin' program. |
113 | Input is sent line-at-a-time to the remote connection. | |
114 | ||
67398f34 RS |
115 | Communication with the remote host is recorded in a buffer `*rlogin-HOST*' |
116 | \(or `*rlogin-USER@HOST*' if the remote username differs\). | |
117 | If a prefix argument is given and the buffer `*rlogin-HOST*' already exists, | |
32992017 | 118 | a new buffer with a different connection will be made. |
8d30fe17 | 119 | |
e48e5617 | 120 | When called from a program, if the optional second argument is a string or |
965f7ac9 RM |
121 | buffer, it names the buffer to use. |
122 | ||
8d30fe17 | 123 | The variable `rlogin-program' contains the name of the actual program to |
2601d12e | 124 | run. It can be a relative or absolute path. |
8d30fe17 NF |
125 | |
126 | The variable `rlogin-explicit-args' is a list of arguments to give to | |
ce992678 RS |
127 | the rlogin when starting. They are added after any arguments given in |
128 | INPUT-ARGS. | |
b79164c7 | 129 | |
32992017 NF |
130 | If the default value of `rlogin-directory-tracking-mode' is t, then the |
131 | default directory in that buffer is set to a remote (FTP) file name to | |
132 | access your home directory on the remote machine. Occasionally this causes | |
133 | an error, if you cannot access the home directory on that machine. This | |
134 | error is harmless as long as you don't try to use that default directory. | |
ce992678 | 135 | |
32992017 | 136 | If `rlogin-directory-tracking-mode' is neither t nor nil, then the default |
ce992678 RS |
137 | directory is initially set up to your (local) home directory. |
138 | This is useful if the remote machine and your local machine | |
32992017 NF |
139 | share the same files via NFS. This is the default. |
140 | ||
141 | If you wish to change directory tracking styles during a session, use the | |
142 | function `rlogin-directory-tracking-mode' rather than simply setting the | |
143 | variable." | |
5236f937 | 144 | (interactive (list |
cd17ae3f RM |
145 | (read-from-minibuffer "rlogin arguments (hostname first): " |
146 | nil nil nil 'rlogin-history) | |
5236f937 | 147 | current-prefix-arg)) |
32992017 | 148 | |
8ae3bc9f | 149 | (let* ((process-connection-type rlogin-process-connection-type) |
32992017 NF |
150 | (args (if rlogin-explicit-args |
151 | (append (rlogin-parse-words input-args) | |
152 | rlogin-explicit-args) | |
153 | (rlogin-parse-words input-args))) | |
154 | (host (car args)) | |
155 | (user (or (car (cdr (member "-l" args))) | |
156 | (user-login-name))) | |
157 | (buffer-name (if (string= user (user-login-name)) | |
158 | (format "*rlogin-%s*" host) | |
159 | (format "*rlogin-%s@%s*" user host))) | |
160 | proc) | |
161 | ||
965f7ac9 | 162 | (cond ((null buffer)) |
e48e5617 | 163 | ((stringp buffer) |
965f7ac9 | 164 | (setq buffer-name buffer)) |
e48e5617 NF |
165 | ((bufferp buffer) |
166 | (setq buffer-name (buffer-name buffer))) | |
965f7ac9 RM |
167 | ((numberp buffer) |
168 | (setq buffer-name (format "%s<%d>" buffer-name buffer))) | |
e1f06ce8 NF |
169 | (t |
170 | (setq buffer-name (generate-new-buffer-name buffer-name)))) | |
171 | ||
e48e5617 | 172 | (setq buffer (get-buffer-create buffer-name)) |
e1f06ce8 | 173 | (pop-to-buffer buffer-name) |
e48e5617 | 174 | |
32992017 | 175 | (cond |
e1f06ce8 | 176 | ((comint-check-proc buffer-name)) |
32992017 | 177 | (t |
e48e5617 NF |
178 | (comint-exec buffer buffer-name rlogin-program nil args) |
179 | (setq proc (get-buffer-process buffer)) | |
32992017 NF |
180 | ;; Set process-mark to point-max in case there is text in the |
181 | ;; buffer from a previous exited process. | |
182 | (set-marker (process-mark proc) (point-max)) | |
183 | (rlogin-mode) | |
2601d12e | 184 | |
32992017 NF |
185 | ;; comint-output-filter-functions is just like a hook, except that the |
186 | ;; functions in that list are passed arguments. add-hook serves well | |
187 | ;; enough for modifying it. | |
188 | (add-hook 'comint-output-filter-functions 'rlogin-carriage-filter) | |
189 | ||
190 | (make-local-variable 'rlogin-host) | |
191 | (setq rlogin-host host) | |
60667917 NF |
192 | (make-local-variable 'rlogin-remote-user) |
193 | (setq rlogin-remote-user user) | |
32992017 NF |
194 | |
195 | (cond | |
196 | ((eq rlogin-directory-tracking-mode t) | |
197 | ;; Do this here, rather than calling the tracking mode function, to | |
198 | ;; avoid a gratuitous resync check; the default should be the | |
199 | ;; user's home directory, be it local or remote. | |
2601d12e | 200 | (setq comint-file-name-prefix |
60667917 | 201 | (concat "/" rlogin-remote-user "@" rlogin-host ":")) |
32992017 NF |
202 | (cd-absolute comint-file-name-prefix)) |
203 | ((null rlogin-directory-tracking-mode)) | |
204 | (t | |
205 | (cd-absolute (concat comint-file-name-prefix "~/")))))))) | |
ce992678 | 206 | |
c7986c18 | 207 | (defun rlogin-mode () |
2601d12e | 208 | "Set major-mode for rlogin sessions. |
8ae3bc9f | 209 | If `rlogin-mode-hook' is set, run it." |
c7986c18 | 210 | (interactive) |
8d30fe17 | 211 | (kill-all-local-variables) |
09567b5c | 212 | (shell-mode) |
c7986c18 | 213 | (setq major-mode 'rlogin-mode) |
8d30fe17 | 214 | (setq mode-name "rlogin") |
c7986c18 | 215 | (use-local-map rlogin-mode-map) |
32992017 | 216 | (setq shell-dirtrackp rlogin-directory-tracking-mode) |
f3417b13 | 217 | (make-local-variable 'comint-file-name-prefix) |
c7986c18 ER |
218 | (run-hooks 'rlogin-mode-hook)) |
219 | ||
32992017 NF |
220 | (defun rlogin-directory-tracking-mode (&optional prefix) |
221 | "Do remote or local directory tracking, or disable entirely. | |
222 | ||
223 | If called with no prefix argument or a unspecified prefix argument (just | |
224 | ``\\[universal-argument]'' with no number) do remote directory tracking via | |
225 | ange-ftp. If called as a function, give it no argument. | |
226 | ||
227 | If called with a negative prefix argument, disable directory tracking | |
228 | entirely. | |
229 | ||
2601d12e | 230 | If called with a positive, numeric prefix argument, e.g. |
32992017 NF |
231 | ``\\[universal-argument] 1 M-x rlogin-directory-tracking-mode\'', |
232 | then do directory tracking but assume the remote filesystem is the same as | |
233 | the local system. This only works in general if the remote machine and the | |
234 | local one share the same directories (through NFS)." | |
235 | (interactive "P") | |
236 | (cond | |
237 | ((or (null prefix) | |
238 | (consp prefix)) | |
239 | (setq rlogin-directory-tracking-mode t) | |
f9c4665a | 240 | (setq shell-dirtrackp t) |
2601d12e | 241 | (setq comint-file-name-prefix |
60667917 | 242 | (concat "/" rlogin-remote-user "@" rlogin-host ":"))) |
32992017 NF |
243 | ((< prefix 0) |
244 | (setq rlogin-directory-tracking-mode nil) | |
f9c4665a | 245 | (setq shell-dirtrackp nil)) |
32992017 NF |
246 | (t |
247 | (setq rlogin-directory-tracking-mode 'local) | |
248 | (setq comint-file-name-prefix "") | |
f9c4665a | 249 | (setq shell-dirtrackp t))) |
2601d12e | 250 | (cond |
f9c4665a | 251 | (shell-dirtrackp |
32992017 NF |
252 | (let* ((proc (get-buffer-process (current-buffer))) |
253 | (proc-mark (process-mark proc)) | |
254 | (current-input (buffer-substring proc-mark (point-max))) | |
255 | (orig-point (point)) | |
256 | (offset (and (>= orig-point proc-mark) | |
257 | (- (point-max) orig-point)))) | |
258 | (unwind-protect | |
259 | (progn | |
260 | (delete-region proc-mark (point-max)) | |
261 | (goto-char (point-max)) | |
262 | (shell-resync-dirs)) | |
263 | (goto-char proc-mark) | |
264 | (insert current-input) | |
265 | (if offset | |
266 | (goto-char (- (point-max) offset)) | |
267 | (goto-char orig-point))))))) | |
268 | ||
8ae3bc9f | 269 | \f |
32992017 NF |
270 | ;; Parse a line into its constituent parts (words separated by |
271 | ;; whitespace). Return a list of the words. | |
272 | (defun rlogin-parse-words (line) | |
273 | (let ((list nil) | |
274 | (posn 0) | |
275 | (match-data (match-data))) | |
276 | (while (string-match "[^ \t\n]+" line posn) | |
277 | (setq list (cons (substring line (match-beginning 0) (match-end 0)) | |
278 | list)) | |
279 | (setq posn (match-end 0))) | |
280 | (store-match-data (match-data)) | |
281 | (nreverse list))) | |
282 | ||
2601d12e NF |
283 | (defun rlogin-carriage-filter (string) |
284 | (let* ((point-marker (point-marker)) | |
285 | (end (process-mark (get-buffer-process (current-buffer)))) | |
286 | (beg (or (and (boundp 'comint-last-output-start) | |
287 | comint-last-output-start) | |
288 | (- end (length string))))) | |
289 | (goto-char beg) | |
290 | (while (search-forward "\C-m" end t) | |
32992017 NF |
291 | (delete-char -1)) |
292 | (goto-char point-marker))) | |
293 | ||
c7986c18 ER |
294 | (defun rlogin-send-Ctrl-C () |
295 | (interactive) | |
296 | (send-string nil "\C-c")) | |
297 | ||
099dcd39 RM |
298 | (defun rlogin-send-Ctrl-D () |
299 | (interactive) | |
300 | (send-string nil "\C-d")) | |
301 | ||
c7986c18 ER |
302 | (defun rlogin-send-Ctrl-Z () |
303 | (interactive) | |
304 | (send-string nil "\C-z")) | |
305 | ||
306 | (defun rlogin-send-Ctrl-backslash () | |
307 | (interactive) | |
308 | (send-string nil "\C-\\")) | |
309 | ||
310 | (defun rlogin-delchar-or-send-Ctrl-D (arg) | |
057795ba | 311 | "\ |
2601d12e NF |
312 | Delete ARG characters forward, or send a C-d to process if at end of buffer." |
313 | (interactive "p") | |
c7986c18 | 314 | (if (eobp) |
057795ba | 315 | (rlogin-send-Ctrl-D) |
c7986c18 ER |
316 | (delete-char arg))) |
317 | ||
32992017 | 318 | (defun rlogin-tab-or-complete () |
60667917 | 319 | "Complete file name if doing directory tracking, or just insert TAB." |
32992017 NF |
320 | (interactive) |
321 | (if rlogin-directory-tracking-mode | |
322 | (comint-dynamic-complete) | |
60667917 | 323 | (insert "\C-i"))) |
32992017 | 324 | |
76550a57 | 325 | ;;; rlogin.el ends here |