-;;; rlogin.el --- remote login interface
-
-;; Author: Noah Friedman
-;; Maintainer: Noah Friedman <friedman@prep.ai.mit.edu>
-;; Keywords: unix, comm
-
-;; Copyright (C) 1992, 1993 Free Software Foundation, Inc.
-;;
-;; This program 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.
-;;
-;; This program 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 this program; if not, write to: The Free Software Foundation,
-;; Inc.; 675 Massachusetts Avenue.; Cambridge, MA 02139, USA.
-
-;;; Commentary:
-
-;; Support for remote logins using `rlogin'.
-;;
-;; Todo: add directory tracking using ange-ftp style patchnames for the cwd.
-
-;;; Code:
-
-(require 'comint)
-
-;;;###autoload
-(defvar rlogin-program "rlogin"
- "*Name of program to invoke rlogin")
-
-;;;###autoload
-(defvar rlogin-explicit-args nil
- "*List of arguments to pass to rlogin on the command line.")
-
-;;;###autoload
-(defvar rlogin-mode-hook nil
- "*Hooks to run after setting current buffer to rlogin-mode.")
-
-;;;###autoload
-(defvar rlogin-process-connection-type nil
- "*If non-`nil', use a pty for the local rlogin process.
-If `nil', use a pipe (if pipes are supported on the local system).
-
-Generally it is better not to waste ptys on systems which have a static
-number of them. On the other hand, some implementations of `rlogin' assume
-a pty is being used, and errors will result from using a pipe instead.")
-
-;; Leave this nil because it makes rlogin-filter a tiny bit faster. Plus
-;; you can still call rlogin-password by hand.
-;;;###autoload
-(defvar rlogin-password-paranoia nil
- "*If non-`nil', query user for a password in the minibuffer when a Password: prompt appears.
-It's also possible to selectively enter passwords without echoing them in
-the minibuffer using the command `rlogin-password' explicitly.")
-
-;; Initialize rlogin mode map.
-;;;###autoload
-(defvar rlogin-mode-map '())
-(cond ((not rlogin-mode-map)
- (setq rlogin-mode-map (full-copy-sparse-keymap comint-mode-map))
- ;(define-key rlogin-mode-map "\M-\t" 'comint-dynamic-complete)
- ;(define-key rlogin-mode-map "\M-?" 'comint-dynamic-list-completions)
- (define-key rlogin-mode-map "\C-c\C-c" 'rlogin-send-Ctrl-C)
- (define-key rlogin-mode-map "\C-c\C-z" 'rlogin-send-Ctrl-Z)
- (define-key rlogin-mode-map "\C-c\C-\\" 'rlogin-send-Ctrl-backslash)
- (define-key rlogin-mode-map "\C-d" 'rlogin-delchar-or-send-Ctrl-D)))
-
-;;;###autoload
-(defun rlogin (&optional prefix host)
- "Open a network login connection to HOST via the `rlogin' program.
-Input is sent line-at-a-time to the remote connection.
-
-Communication with HOST is recorded in a buffer *rlogin-HOST*.
-If a prefix argument is given and the buffer *rlogin-HOST* already exists,
-a new buffer with a different connection will be made.
-
-The variable `rlogin-program' contains the name of the actual program to
-run. It can be a relative or absolute path.
-
-The variable `rlogin-explicit-args' is a list of arguments to give to
-the rlogin when starting."
- (interactive (list current-prefix-arg
- (read-from-minibuffer "Open rlogin connection to host: ")))
- (let* ((process-connection-type rlogin-process-connection-type)
- (buffer-name (format "*rlogin-%s*" host))
- (args (if (and rlogin-explicit-args (listp rlogin-explicit-args))
- (cons host rlogin-explicit-args)
- (list host)))
- proc)
- (and prefix (setq buffer-name
- (buffer-name (generate-new-buffer buffer-name))))
- (switch-to-buffer buffer-name)
- (or (comint-check-proc buffer-name)
- (progn
- (comint-mode)
- (comint-exec (current-buffer) buffer-name rlogin-program nil args)
- (setq proc (get-process buffer-name))
- ;; Set process-mark to point-max in case there is text in the
- ;; buffer from a previous exited process.
- (set-marker (process-mark proc) (point-max))
- (set-process-filter proc 'rlogin-filter)
- (rlogin-mode)))))
-
-;;;###autoload
-(defun rlogin-with-args (host args)
- "Open a new rlogin connection to HOST, even if one already exists.
-String ARGS is given as arguments to the `rlogin' program, overriding the
-value of `rlogin-explicit-args'."
- (interactive (list (read-from-minibuffer "Open rlogin connection to host: ")
- (read-from-minibuffer "with arguments: ")))
- (let ((old-match-data (match-data))
- (rlogin-explicit-args nil))
- (unwind-protect
- (progn
- (while (string-match "[ \t]*\\([^ \t]+\\)$" args)
- (setq rlogin-explicit-args
- (cons (substring args
- (match-beginning 1)
- (match-end 1))
- rlogin-explicit-args)
- args (substring args 0 (match-beginning 0)))))
- (store-match-data old-match-data))
- (rlogin 1 host)))
-
-;;;###autoload
-(defun rlogin-password (&optional proc)
- "Read a password and send it to an rlogin session.
-For each character typed, a `*' is echoed in the minibuffer.
-End with RET, LFD, or ESC. DEL or C-h rubs out. C-u kills line.
-C-g aborts attempt to read and send password.
-
-Optional argument PROC is the process to which the password should be sent.
-If not provided, send to the process in the current buffer. This argument
-is intended primarily for use by `rlogin-filter'."
- (interactive)
- (or proc (setq proc (get-buffer-process (current-buffer))))
- (let* ((buffer-name (buffer-name (process-buffer proc)))
- (pass (comint-read-noecho (format "Password for buffer \"%s\": "
- buffer-name)
- 'stars)))
- (and pass
- (save-excursion
- (set-buffer buffer-name)
- (insert-before-markers "\n")
- (comint-send-string proc (format "%s\n" pass))))))
-
-;;;###autoload
-(defun rlogin-mode ()
- "Set major-mode for rlogin sessions.
-If `rlogin-mode-hook' is set, run it."
- (interactive)
- (kill-all-local-variables)
- (comint-mode)
- (setq comint-prompt-regexp shell-prompt-pattern)
- (setq major-mode 'rlogin-mode)
- (setq mode-name "rlogin")
- (use-local-map rlogin-mode-map)
- (run-hooks 'rlogin-mode-hook))
-
-\f
-(defun rlogin-filter (proc string)
- (save-excursion
- (set-buffer (process-buffer proc))
- (let ((proc-mark (process-mark proc))
- (region-begin (point)))
- (goto-char proc-mark)
- (insert-before-markers string)
- (goto-char region-begin)
- (while (search-forward "\C-m" proc-mark t)
- (delete-char -1))))
- ;; Kludgy workaround for scroll-step bug in emacs. If point is at the
- ;; top of the window, scroll step is nonzero, and you call
- ;; insert-before-markers, the text is inserted off-screen. If
- ;; scroll-step is 0, this doesn't happen.
- (and (/= scroll-step 0)
- (eq (process-buffer proc) (window-buffer (selected-window)))
- (eq (point) (window-start))
- (set-window-start (selected-window)
- (save-excursion
- (beginning-of-line)
- (point))
- 'noforce))
- (and rlogin-password-paranoia
- (string= "Password:" string)
- (rlogin-password proc)))
-
-;;;###autoload
-(defun rlogin-send-Ctrl-C ()
- (interactive)
- (send-string nil "\C-c"))
-
-;;;###autoload
-(defun rlogin-send-Ctrl-Z ()
- (interactive)
- (send-string nil "\C-z"))
-
-;;;###autoload
-(defun rlogin-send-Ctrl-backslash ()
- (interactive)
- (send-string nil "\C-\\"))
-
-;;;###autoload
-(defun rlogin-delchar-or-send-Ctrl-D (arg)
- "Delete ARG characters forward, or send a C-d to process if at end of
-buffer."
- (interactive "p")
- (if (eobp)
- (send-string nil "\C-d")
- (delete-char arg)))
-
-;;; rlogin.el ends here
+;;; rlogin.el --- remote login interface
+
+;; Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+;; Author: Noah Friedman
+;; Maintainer: Noah Friedman <friedman@prep.ai.mit.edu>
+;; Keywords: unix, comm
+
+;; 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, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;; $Id: rlogin.el,v 1.34 1996/06/20 17:30:41 friedman Exp friedman $
+
+;;; Commentary:
+
+;; Support for remote logins using `rlogin'.
+;; This program is layered on top of shell.el; the code here only accounts
+;; for the variations needed to handle a remote process, e.g. directory
+;; tracking and the sending of some special characters.
+
+;; If you wish for rlogin mode to prompt you in the minibuffer for
+;; passwords when a password prompt appears, just enter m-x send-invisible
+;; and type in your line, or add `comint-watch-for-password-prompt' to
+;; `comint-output-filter-functions'.
+
+;;; Code:
+
+(require 'comint)
+(require 'shell)
+
+(defvar rlogin-program "rlogin"
+ "*Name of program to invoke rlogin")
+
+(defvar rlogin-explicit-args nil
+ "*List of arguments to pass to rlogin on the command line.")
+
+(defvar rlogin-mode-hook nil
+ "*Hooks to run after setting current buffer to rlogin-mode.")
+
+(defvar rlogin-process-connection-type nil
+ "*If non-`nil', use a pty for the local rlogin process.
+If `nil', use a pipe (if pipes are supported on the local system).
+
+Generally it is better not to waste ptys on systems which have a static
+number of them. On the other hand, some implementations of `rlogin' assume
+a pty is being used, and errors will result from using a pipe instead.")
+
+(defvar rlogin-directory-tracking-mode 'local
+ "*Control whether and how to do directory tracking in an rlogin buffer.
+
+nil means don't do directory tracking.
+
+t means do so using an ftp remote file name.
+
+Any other value means do directory tracking using local file names.
+This works only if the remote machine and the local one
+share the same directories (through NFS). This is the default.
+
+This variable becomes local to a buffer when set in any fashion for it.
+
+It is better to use the function of the same name to change the behavior of
+directory tracking in an rlogin session once it has begun, rather than
+simply setting this variable, since the function does the necessary
+re-synching of directories.")
+
+(make-variable-buffer-local 'rlogin-directory-tracking-mode)
+
+(defvar rlogin-host nil
+ "*The name of the remote host. This variable is buffer-local.")
+
+(defvar rlogin-remote-user nil
+ "*The username used on the remote host.
+This variable is buffer-local and defaults to your local user name.
+If rlogin is invoked with the `-l' option to specify the remote username,
+this variable is set from that.")
+
+;; Initialize rlogin mode map.
+(defvar rlogin-mode-map '())
+(cond
+ ((null rlogin-mode-map)
+ (setq rlogin-mode-map (if (consp shell-mode-map)
+ (cons 'keymap shell-mode-map)
+ (copy-keymap shell-mode-map)))
+ (define-key rlogin-mode-map "\C-c\C-c" 'rlogin-send-Ctrl-C)
+ (define-key rlogin-mode-map "\C-c\C-d" 'rlogin-send-Ctrl-D)
+ (define-key rlogin-mode-map "\C-c\C-z" 'rlogin-send-Ctrl-Z)
+ (define-key rlogin-mode-map "\C-c\C-\\" 'rlogin-send-Ctrl-backslash)
+ (define-key rlogin-mode-map "\C-d" 'rlogin-delchar-or-send-Ctrl-D)
+ (define-key rlogin-mode-map "\C-i" 'rlogin-tab-or-complete)))
+
+\f
+;;;###autoload (add-hook 'same-window-regexps "^\\*rlogin-.*\\*\\(\\|<[0-9]+>\\)")
+
+(defvar rlogin-history nil)
+
+;;;###autoload
+(defun rlogin (input-args &optional buffer)
+ "Open a network login connection via `rlogin' with args INPUT-ARGS.
+INPUT-ARGS should start with a host name; it may also contain
+other arguments for `rlogin'.
+
+Input is sent line-at-a-time to the remote connection.
+
+Communication with the remote host is recorded in a buffer `*rlogin-HOST*'
+\(or `*rlogin-USER@HOST*' if the remote username differs\).
+If a prefix argument is given and the buffer `*rlogin-HOST*' already exists,
+a new buffer with a different connection will be made.
+
+When called from a program, if the optional second argument BUFFER is
+a string or buffer, it specifies the buffer to use.
+
+The variable `rlogin-program' contains the name of the actual program to
+run. It can be a relative or absolute path.
+
+The variable `rlogin-explicit-args' is a list of arguments to give to
+the rlogin when starting. They are added after any arguments given in
+INPUT-ARGS.
+
+If the default value of `rlogin-directory-tracking-mode' is t, then the
+default directory in that buffer is set to a remote (FTP) file name to
+access your home directory on the remote machine. Occasionally this causes
+an error, if you cannot access the home directory on that machine. This
+error is harmless as long as you don't try to use that default directory.
+
+If `rlogin-directory-tracking-mode' is neither t nor nil, then the default
+directory is initially set up to your (local) home directory.
+This is useful if the remote machine and your local machine
+share the same files via NFS. This is the default.
+
+If you wish to change directory tracking styles during a session, use the
+function `rlogin-directory-tracking-mode' rather than simply setting the
+variable."
+ (interactive (list
+ (read-from-minibuffer "rlogin arguments (hostname first): "
+ nil nil nil 'rlogin-history)
+ current-prefix-arg))
+
+ (let* ((process-connection-type rlogin-process-connection-type)
+ (args (if rlogin-explicit-args
+ (append (rlogin-parse-words input-args)
+ rlogin-explicit-args)
+ (rlogin-parse-words input-args)))
+ (host (car args))
+ (user (or (car (cdr (member "-l" args)))
+ (user-login-name)))
+ (buffer-name (if (string= user (user-login-name))
+ (format "*rlogin-%s*" host)
+ (format "*rlogin-%s@%s*" user host)))
+ proc)
+
+ (cond ((null buffer))
+ ((stringp buffer)
+ (setq buffer-name buffer))
+ ((bufferp buffer)
+ (setq buffer-name (buffer-name buffer)))
+ ((numberp buffer)
+ (setq buffer-name (format "%s<%d>" buffer-name buffer)))
+ (t
+ (setq buffer-name (generate-new-buffer-name buffer-name))))
+
+ (setq buffer (get-buffer-create buffer-name))
+ (pop-to-buffer buffer-name)
+
+ (cond
+ ((comint-check-proc buffer-name))
+ (t
+ (comint-exec buffer buffer-name rlogin-program nil args)
+ (setq proc (get-buffer-process buffer))
+ ;; Set process-mark to point-max in case there is text in the
+ ;; buffer from a previous exited process.
+ (set-marker (process-mark proc) (point-max))
+
+ ;; comint-output-filter-functions is just like a hook, except that the
+ ;; functions in that list are passed arguments. add-hook serves well
+ ;; enough for modifying it.
+ ;; comint-output-filter-functions should already have a
+ ;; permanent-local property, at least in emacs 19.27 or later.
+ (if (fboundp 'make-local-hook)
+ (make-local-hook 'comint-output-filter-functions)
+ (make-local-variable 'comint-output-filter-functions))
+ (add-hook 'comint-output-filter-functions 'rlogin-carriage-filter)
+
+ (rlogin-mode)
+
+ (make-local-variable 'rlogin-host)
+ (setq rlogin-host host)
+ (make-local-variable 'rlogin-remote-user)
+ (setq rlogin-remote-user user)
+
+ (condition-case ()
+ (cond ((eq rlogin-directory-tracking-mode t)
+ ;; Do this here, rather than calling the tracking mode
+ ;; function, to avoid a gratuitous resync check; the default
+ ;; should be the user's home directory, be it local or remote.
+ (setq comint-file-name-prefix
+ (concat "/" rlogin-remote-user "@" rlogin-host ":"))
+ (cd-absolute comint-file-name-prefix))
+ ((null rlogin-directory-tracking-mode))
+ (t
+ (cd-absolute (concat comint-file-name-prefix "~/"))))
+ (error nil))))))
+
+(defun rlogin-mode ()
+ "Set major-mode for rlogin sessions.
+If `rlogin-mode-hook' is set, run it."
+ (interactive)
+ (kill-all-local-variables)
+ (shell-mode)
+ (setq major-mode 'rlogin-mode)
+ (setq mode-name "rlogin")
+ (use-local-map rlogin-mode-map)
+ (setq shell-dirtrackp rlogin-directory-tracking-mode)
+ (make-local-variable 'comint-file-name-prefix)
+ (run-hooks 'rlogin-mode-hook))
+
+(defun rlogin-directory-tracking-mode (&optional prefix)
+ "Do remote or local directory tracking, or disable entirely.
+
+If called with no prefix argument or a unspecified prefix argument (just
+``\\[universal-argument]'' with no number) do remote directory tracking via
+ange-ftp. If called as a function, give it no argument.
+
+If called with a negative prefix argument, disable directory tracking
+entirely.
+
+If called with a positive, numeric prefix argument, e.g.
+``\\[universal-argument] 1 M-x rlogin-directory-tracking-mode\'',
+then do directory tracking but assume the remote filesystem is the same as
+the local system. This only works in general if the remote machine and the
+local one share the same directories (through NFS)."
+ (interactive "P")
+ (cond
+ ((or (null prefix)
+ (consp prefix))
+ (setq rlogin-directory-tracking-mode t)
+ (setq shell-dirtrackp t)
+ (setq comint-file-name-prefix
+ (concat "/" rlogin-remote-user "@" rlogin-host ":")))
+ ((< prefix 0)
+ (setq rlogin-directory-tracking-mode nil)
+ (setq shell-dirtrackp nil))
+ (t
+ (setq rlogin-directory-tracking-mode 'local)
+ (setq comint-file-name-prefix "")
+ (setq shell-dirtrackp t)))
+ (cond
+ (shell-dirtrackp
+ (let* ((proc (get-buffer-process (current-buffer)))
+ (proc-mark (process-mark proc))
+ (current-input (buffer-substring proc-mark (point-max)))
+ (orig-point (point))
+ (offset (and (>= orig-point proc-mark)
+ (- (point-max) orig-point))))
+ (unwind-protect
+ (progn
+ (delete-region proc-mark (point-max))
+ (goto-char (point-max))
+ (shell-resync-dirs))
+ (goto-char proc-mark)
+ (insert current-input)
+ (if offset
+ (goto-char (- (point-max) offset))
+ (goto-char orig-point)))))))
+
+\f
+;; Parse a line into its constituent parts (words separated by
+;; whitespace). Return a list of the words.
+(defun rlogin-parse-words (line)
+ (let ((list nil)
+ (posn 0)
+ (match-data (match-data)))
+ (while (string-match "[^ \t\n]+" line posn)
+ (setq list (cons (substring line (match-beginning 0) (match-end 0))
+ list))
+ (setq posn (match-end 0)))
+ (store-match-data (match-data))
+ (nreverse list)))
+
+(defun rlogin-carriage-filter (string)
+ (let* ((point-marker (point-marker))
+ (end (process-mark (get-buffer-process (current-buffer))))
+ (beg (or (and (boundp 'comint-last-output-start)
+ comint-last-output-start)
+ (- end (length string)))))
+ (goto-char beg)
+ (while (search-forward "\C-m" end t)
+ (delete-char -1))
+ (goto-char point-marker)))
+
+(defun rlogin-send-Ctrl-C ()
+ (interactive)
+ (send-string nil "\C-c"))
+
+(defun rlogin-send-Ctrl-D ()
+ (interactive)
+ (send-string nil "\C-d"))
+
+(defun rlogin-send-Ctrl-Z ()
+ (interactive)
+ (send-string nil "\C-z"))
+
+(defun rlogin-send-Ctrl-backslash ()
+ (interactive)
+ (send-string nil "\C-\\"))
+
+(defun rlogin-delchar-or-send-Ctrl-D (arg)
+ "\
+Delete ARG characters forward, or send a C-d to process if at end of buffer."
+ (interactive "p")
+ (if (eobp)
+ (rlogin-send-Ctrl-D)
+ (delete-char arg)))
+
+(defun rlogin-tab-or-complete ()
+ "Complete file name if doing directory tracking, or just insert TAB."
+ (interactive)
+ (if rlogin-directory-tracking-mode
+ (comint-dynamic-complete)
+ (insert "\C-i")))
+
+;;; rlogin.el ends here
HCoop / bpt / emacs.git / blobdiff