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88 lines
3.0 KiB
EmacsLisp
88 lines
3.0 KiB
EmacsLisp
;;; erc-identd.el --- RFC1413 (identd authentication protocol) server
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;; Copyright (C) 2003 Free Software Foundation, Inc.
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;; Author: John Wiegley <johnw@gnu.org>
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;; Keywords: comm, processes
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; You can have a local identd server (running on port 8113; I use DNAT
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;; to bind 113->8113) if you add this to .emacs.el:
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;; (add-hook 'erc-connect-pre-hook 'erc-identd-start)
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;; (add-hook 'erc-disconnected-hook 'erc-identd-stop)
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;;; Code:
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(defvar erc-identd-process nil)
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(defun erc-identd-filter (proc string)
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"This filter implements RFC1413 (identd authentication protocol)."
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(let ((erc-identd-process proc))
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(when (string-match "\\([0-9]+\\)\\s-*,\\s-*\\([0-9]+\\)" string)
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(let ((port-on-server (match-string 1 string))
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(port-on-client (match-string 2 string)))
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(send-string erc-identd-process
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(format "%s, %s : USERID : %s : %s\n"
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port-on-server port-on-client
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system-type (user-login-name)))
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(process-send-eof erc-identd-process)))))
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(defun erc-identd-start (&optional port)
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"Start an identd server listening to port 8113.
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Port 113 (auth) will need to be redirected to port 8113 on your
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machine -- using iptables, or a program like redir which can be
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run from inetd. The idea is to provide a simple identd server
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when you need one, without having to install one globally on your
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system."
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(interactive (list (read-string "Serve identd requests on port: " "8113")))
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(if (null port)
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(setq port 8113)
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(if (stringp port)
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(setq port (string-to-number port))))
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(if erc-identd-process
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(delete-process erc-identd-process))
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(if (fboundp 'make-network-process)
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(setq erc-identd-process
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(make-network-process :name "identd"
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:buffer (generate-new-buffer "identd")
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:service port :server t :noquery t
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:filter 'erc-identd-filter))
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(open-network-stream-server "identd" (generate-new-buffer "identd")
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port nil 'erc-identd-filter)))
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(defun erc-identd-stop (&rest ignore)
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(interactive)
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(when erc-identd-process
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(delete-process erc-identd-process)
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(setq erc-identd-process nil)))
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(provide 'erc-identd)
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;;; erc-identd.el ends here
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;;
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;; Local Variables:
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;; indent-tabs-mode: t
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;; tab-width: 8
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;; End:
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;; arch-tag: e0b5f926-0f35-40b9-8ddb-ca06b62a7544
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