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| -rw-r--r-- | lisp/telnet.el | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/lisp/telnet.el b/lisp/telnet.el new file mode 100644 index 00000000000..77939cf0dd1 --- /dev/null +++ b/lisp/telnet.el | |||
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| 1 | ;; Copyright (C) 1985, 1988 Free Software Foundation, Inc. | ||
| 2 | |||
| 3 | ;; This file is part of GNU Emacs. | ||
| 4 | |||
| 5 | ;; GNU Emacs is free software; you can redistribute it and/or modify | ||
| 6 | ;; it under the terms of the GNU General Public License as published by | ||
| 7 | ;; the Free Software Foundation; either version 1, or (at your option) | ||
| 8 | ;; any later version. | ||
| 9 | |||
| 10 | ;; GNU Emacs is distributed in the hope that it will be useful, | ||
| 11 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 13 | ;; GNU General Public License for more details. | ||
| 14 | |||
| 15 | ;; You should have received a copy of the GNU General Public License | ||
| 16 | ;; along with GNU Emacs; see the file COPYING. If not, write to | ||
| 17 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| 18 | |||
| 19 | ;; Author William F. Schelter | ||
| 20 | |||
| 21 | ;;to do fix software types for lispm: | ||
| 22 | ;;to eval current expression. Also to try to send escape keys correctly. | ||
| 23 | ;;essentially we'll want the rubout-handler off. | ||
| 24 | |||
| 25 | ;; filter is simplistic but should be okay for typical shell usage. | ||
| 26 | ;; needs hacking if it is going to deal with asynchronous output in a sane | ||
| 27 | ;; manner | ||
| 28 | |||
| 29 | (require 'comint) | ||
| 30 | (provide 'telnet) | ||
| 31 | |||
| 32 | (defvar telnet-new-line "\r") | ||
| 33 | (defvar telnet-mode-map nil) | ||
| 34 | (defvar telnet-prompt-pattern "^[^#$%>]*[#$%>] *") | ||
| 35 | (defvar telnet-replace-c-g nil) | ||
| 36 | (make-variable-buffer-local | ||
| 37 | (defvar telnet-remote-echoes t | ||
| 38 | "True if the telnet process will echo input.")) | ||
| 39 | (make-variable-buffer-local | ||
| 40 | (defvar telnet-interrupt-string "\C-c" "String sent by C-c.")) | ||
| 41 | |||
| 42 | (defvar telnet-count 0 | ||
| 43 | "Number of output strings read from the telnet process | ||
| 44 | while looking for the initial password.") | ||
| 45 | |||
| 46 | (defvar telnet-initial-count -50 | ||
| 47 | "Initial value of telnet-count. Should be set to the negative of the | ||
| 48 | number of terminal writes telnet will make setting up the host connection.") | ||
| 49 | |||
| 50 | (defvar telnet-maximum-count 4 | ||
| 51 | "Maximum value telnet-count can have. | ||
| 52 | After this many passes, we stop looking for initial setup data. | ||
| 53 | Should be set to the number of terminal writes telnet will make | ||
| 54 | rejecting one login and prompting for the again for a username and password.") | ||
| 55 | |||
| 56 | (defun telnet-interrupt-subjob () | ||
| 57 | (interactive) | ||
| 58 | "Interrupt the program running through telnet on the remote host." | ||
| 59 | (send-string nil telnet-interrupt-string)) | ||
| 60 | |||
| 61 | (defun telnet-c-z () | ||
| 62 | (interactive) | ||
| 63 | (send-string nil "\C-z")) | ||
| 64 | |||
| 65 | (defun send-process-next-char () | ||
| 66 | (interactive) | ||
| 67 | (send-string nil | ||
| 68 | (char-to-string | ||
| 69 | (let ((inhibit-quit t)) | ||
| 70 | (prog1 (read-char) | ||
| 71 | (setq quit-flag nil)))))) | ||
| 72 | |||
| 73 | ; initialization on first load. | ||
| 74 | (if telnet-mode-map | ||
| 75 | nil | ||
| 76 | (setq telnet-mode-map (copy-keymap comint-mode-map)) | ||
| 77 | (define-key telnet-mode-map "\C-m" 'telnet-send-input) | ||
| 78 | ; (define-key telnet-mode-map "\C-j" 'telnet-send-input) | ||
| 79 | (define-key telnet-mode-map "\C-c\C-q" 'send-process-next-char) | ||
| 80 | (define-key telnet-mode-map "\C-c\C-c" 'telnet-interrupt-subjob) | ||
| 81 | (define-key telnet-mode-map "\C-c\C-z" 'telnet-c-z)) | ||
| 82 | |||
| 83 | ;;maybe should have a flag for when have found type | ||
| 84 | (defun telnet-check-software-type-initialize (string) | ||
| 85 | "Tries to put correct initializations in. Needs work." | ||
| 86 | (let ((case-fold-search t)) | ||
| 87 | (cond ((string-match "unix" string) | ||
| 88 | (setq telnet-prompt-pattern comint-prompt-regexp) | ||
| 89 | (setq telnet-new-line "\n")) | ||
| 90 | ((string-match "tops-20" string) ;;maybe add telnet-replace-c-g | ||
| 91 | (setq telnet-prompt-pattern "[@>]*")) | ||
| 92 | ((string-match "its" string) | ||
| 93 | (setq telnet-prompt-pattern "^[^*>]*[*>] *")) | ||
| 94 | ((string-match "explorer" string) ;;explorer telnet needs work | ||
| 95 | (setq telnet-replace-c-g ?\n)))) | ||
| 96 | (setq comint-prompt-regexp telnet-prompt-pattern)) | ||
| 97 | |||
| 98 | (defun telnet-initial-filter (proc string) | ||
| 99 | ;For reading up to and including password; also will get machine type. | ||
| 100 | (cond ((string-match "No such host" string) | ||
| 101 | (kill-buffer (process-buffer proc)) | ||
| 102 | (error "No such host.")) | ||
| 103 | ((string-match "passw" string) | ||
| 104 | (telnet-filter proc string) | ||
| 105 | (let* ((echo-keystrokes 0) | ||
| 106 | (password (read-password))) | ||
| 107 | (setq telnet-count 0) | ||
| 108 | (send-string proc (concat password telnet-new-line)))) | ||
| 109 | (t (telnet-check-software-type-initialize string) | ||
| 110 | (telnet-filter proc string) | ||
| 111 | (cond ((> telnet-count telnet-maximum-count) | ||
| 112 | (set-process-filter proc 'telnet-filter)) | ||
| 113 | (t (setq telnet-count (1+ telnet-count))))))) | ||
| 114 | |||
| 115 | (defun telnet-filter (proc string) | ||
| 116 | (let ((at-end | ||
| 117 | (and (eq (process-buffer proc) (current-buffer)) | ||
| 118 | (= (point) (point-max))))) | ||
| 119 | (save-excursion | ||
| 120 | (set-buffer (process-buffer proc)) | ||
| 121 | (goto-char (process-mark proc)) | ||
| 122 | (let ((now (point))) | ||
| 123 | (let ((index 0) c-m) | ||
| 124 | (while (setq c-m (string-match "\C-m" string index)) | ||
| 125 | (insert-before-markers (substring string index c-m)) | ||
| 126 | (setq index (1+ c-m))) | ||
| 127 | (insert-before-markers (substring string index))) | ||
| 128 | (and telnet-replace-c-g | ||
| 129 | (subst-char-in-region now (point) ?\C-g telnet-replace-c-g))) | ||
| 130 | ; (if (and (integer-or-marker-p last-input-start) | ||
| 131 | ; (marker-position last-input-start) | ||
| 132 | ; telnet-remote-echoes) | ||
| 133 | ; (delete-region last-input-start last-input-end)) | ||
| 134 | ) | ||
| 135 | (if at-end | ||
| 136 | (goto-char (point-max))))) | ||
| 137 | |||
| 138 | (defun telnet-send-input () | ||
| 139 | (interactive) | ||
| 140 | (comint-send-input telnet-new-line telnet-remote-echoes)) | ||
| 141 | |||
| 142 | (defun telnet (arg) | ||
| 143 | "Open a network login connection to host named HOST (a string). | ||
| 144 | Communication with HOST is recorded in a buffer *HOST-telnet*. | ||
| 145 | Normally input is edited in Emacs and sent a line at a time." | ||
| 146 | (interactive "sOpen telnet connection to host: ") | ||
| 147 | (let ((name (concat arg "-telnet" ))) | ||
| 148 | (switch-to-buffer (make-comint name "telnet")) | ||
| 149 | (set-process-filter (get-process name) 'telnet-initial-filter) | ||
| 150 | (erase-buffer) | ||
| 151 | (send-string name (concat "open " arg "\n")) | ||
| 152 | (telnet-mode) | ||
| 153 | (setq telnet-count telnet-initial-count))) | ||
| 154 | |||
| 155 | (defun telnet-mode () | ||
| 156 | "This mode is for use during telnet from a buffer to another | ||
| 157 | host. It has most of the same commands as comint-mode. | ||
| 158 | There is a variable ``telnet-interrupt-string'' which is the character | ||
| 159 | sent to try to stop execution of a job on the remote host. | ||
| 160 | Data is sent to the remote host when RET is typed. | ||
| 161 | |||
| 162 | \\{telnet-mode-map} | ||
| 163 | |||
| 164 | Bugs: | ||
| 165 | --Replaces by a space, really should remove." | ||
| 166 | (interactive) | ||
| 167 | (comint-mode) | ||
| 168 | (setq major-mode 'telnet-mode | ||
| 169 | mode-name "Telnet" | ||
| 170 | comint-prompt-regexp telnet-prompt-pattern) | ||
| 171 | (use-local-map telnet-mode-map) | ||
| 172 | (run-hooks 'telnet-mode-hook)) | ||
| 173 | |||
| 174 | (defun read-password () | ||
| 175 | (let ((answ "") tem) | ||
| 176 | (message "Reading password...") | ||
| 177 | (while (not (or (= (setq tem (read-char)) ?\^m) | ||
| 178 | (= tem ?\n))) | ||
| 179 | (setq answ (concat answ (char-to-string tem)))) | ||
| 180 | answ)) | ||