Revision: emacs@sv.gnu.org/emacs--devo--0--patch-22

Creator:  Michael Olson <mwolson@gnu.org>

Install ERC.

1 files changed, 87 insertions, 0 deletions

diff --git a/lisp/erc/erc-identd.el b/lisp/erc/erc-identd.el
new file mode 100644
index 00000000000..5cb179c7e22
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+++ b/lisp/erc/erc-identd.el
@@ -0,0 +1,87 @@
+;;; erc-identd.el --- RFC1413 (identd authentication protocol) server
+
+;; Copyright (C) 2003 Free Software Foundation, Inc.
+
+;; Author: John Wiegley <johnw@gnu.org>
+;; Keywords: comm, processes
+
+;; 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., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; You can have a local identd server (running on port 8113; I use DNAT
+;; to bind 113->8113) if you add this to .emacs.el:
+
+;;    (add-hook 'erc-connect-pre-hook 'erc-identd-start)
+;;    (add-hook 'erc-disconnected-hook 'erc-identd-stop)
+
+;;; Code:
+
+(defvar erc-identd-process nil)
+
+(defun erc-identd-filter (proc string)
+  "This filter implements RFC1413 (identd authentication protocol)."
+  (let ((erc-identd-process proc))
+    (when (string-match "\\([0-9]+\\)\\s-*,\\s-*\\([0-9]+\\)" string)
+      (let ((port-on-server (match-string 1 string))
+	    (port-on-client (match-string 2 string)))
+	(send-string erc-identd-process
+		     (format "%s, %s : USERID : %s : %s\n"
+			     port-on-server port-on-client
+			     system-type (user-login-name)))
+	(process-send-eof erc-identd-process)))))
+
+(defun erc-identd-start (&optional port)
+  "Start an identd server listening to port 8113.
+Port 113 (auth) will need to be redirected to port 8113 on your
+machine -- using iptables, or a program like redir which can be
+run from inetd.  The idea is to provide a simple identd server
+when you need one, without having to install one globally on your
+system."
+  (interactive (list (read-string "Serve identd requests on port: " "8113")))
+  (if (null port)
+      (setq port 8113)
+    (if (stringp port)
+	(setq port (string-to-number port))))
+  (if erc-identd-process
+      (delete-process erc-identd-process))
+  (if (fboundp 'make-network-process)
+      (setq erc-identd-process
+	    (make-network-process :name "identd"
+				  :buffer (generate-new-buffer "identd")
+				  :service port :server t :noquery t
+				  :filter 'erc-identd-filter))
+    (open-network-stream-server "identd" (generate-new-buffer "identd")
+				port nil 'erc-identd-filter)))
+
+(defun erc-identd-stop (&rest ignore)
+  (interactive)
+  (when erc-identd-process
+    (delete-process erc-identd-process)
+    (setq erc-identd-process nil)))
+
+(provide 'erc-identd)
+
+;;; erc-identd.el ends here
+;;
+;; Local Variables:
+;; indent-tabs-mode: t
+;; tab-width: 8
+;; End:
+
+;; arch-tag: e0b5f926-0f35-40b9-8ddb-ca06b62a7544