/usr/share/anubis/remailer.scm is in anubis 4.1.1+dfsg1-3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;;; remailer.scm
;;;
;;; This file is part of GNU Anubis.
;;; Copyright (C) 2003, 2004, 2007 The Anubis Team.
;;;
;;; GNU Anubis 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 3 of the License, or (at your
;;; option) any later version.
;;;
;;; GNU Anubis 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 Anubis. If not, see <http://www.gnu.org/licenses/>.
(define (get-opt-arg opt-args tag)
(cond
((member tag opt-args) =>
(lambda (x)
(car (cdr x))))
(else
#f)))
(define (remailer-I hdr body . rest)
"Reformat the body of the message so it can be used with type-I remailers.
Keyword arguments are:
#:rrt address -- Add Anon-To: header
#:post address -- Add Anon-Post-To: header
#:latent time -- Add Latent-Time: header
#:random -- Add random suffix to the latent time.
#:header header -- Add remailer header"
(let* ((pfx (string-append
(cond
((get-opt-arg rest #:rrt) =>
(lambda (x)
(string-append "Anon-To: " x "\n")))
(else
""))
(cond
((get-opt-arg rest #:post) =>
(lambda (x)
(string-append "Anon-Post-To: " x "\n")))
(else
""))
(cond
((get-opt-arg rest #:latent) =>
(lambda (x)
(string-append "Latent-Time: +" x
(if (member #:random rest) "r" "") "\n")))
(else
""))
(cond
((get-opt-arg rest #:header) =>
(lambda (x)
(string-append "##\n" x "\n")))
(else
"")))))
(if (string-null? pfx)
(cons #t #t)
(cons #t (string-append "::\n" pfx "\n" body)))))
;;;; End of remailer.scm
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