;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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 Guix 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 Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages messaging)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages gnupg))

(define-public libotr
  (package
    (name "libotr")
    (version "4.0.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://otr.cypherpunks.ca/libotr-"
                                  version ".tar.gz"))
              (sha256
               (base32 "1d4k0b7v4d3scwm858cmqr9c6xgd6ppla1vk4x2yg64q82a1k49z"))))
    (build-system gnu-build-system)
    (propagated-inputs
     `(("libgcrypt" ,libgcrypt)))  ; libotr headers include gcrypt.h
    (inputs `(("libgpg-error" ,libgpg-error)))
    (arguments
     `(#:configure-flags '("--with-pic")))
    (synopsis "Off-the-Record (OTR) Messaging Library and Toolkit")
    (description
     "OTR allows you to have private conversations over instant messaging by
providing:
* Encryption: No one else can read your instant messages.
* Authentication: You are assured the correspondent is who you think it is.
* Deniability: The messages you send do not have digital signatures that are
  checkable by a third party.  Anyone can forge messages after a conversation
  to make them look like they came from you.  However, during a conversation,
  your correspondent is assured the messages he sees are authentic and
  unmodified.
* Perfect forward secrecy: If you lose control of your private keys, no
  previous conversation is compromised.")
    (home-page "https://otr.cypherpunks.ca/")
    (license (list lgpl2.1 gpl2))))

(define-public libotr-3
  (package (inherit libotr)
    (version "3.2.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://otr.cypherpunks.ca/libotr-"
                                  version ".tar.gz"))
              (sha256
               (base32 "1x6dd4rh499hdraiqfhz81igrj0a5rs0gjhc8l4sljwqhjjyla6l"))))))

;;; messaging.scm ends here