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#!/usr/bin/env gpgscm
;; Copyright (C) 2017 g10 Code GmbH
;;
;; This file is part of GnuPG.
;;
;; GnuPG 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.
;;
;; GnuPG 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 this program; if not, see <http://www.gnu.org/licenses/>.
(load (with-path "defs.scm"))
(setup-legacy-environment)
(define (get-session-key filename)
(lettmp (sink)
(let* ((status' (call-popen `(,@gpg --status-fd=1 --decrypt
--show-session-key
--output ,sink ,filename) ""))
(status (map (lambda (l)
(assert (string-prefix? l "[GNUPG:] "))
(string-splitp (substring l 9 (string-length l))
char-whitespace? -1))
(string-split-newlines status'))))
(cadr (assoc "SESSION_KEY" status)))))
(for-each-p
"Checking decryption of supplied files using the session key."
(lambda (name)
(let* ((source (in-srcdir (string-append name ".asc")))
(key (get-session-key source)))
(with-ephemeral-home-directory setup-environment
(tr:do
(tr:open source)
(tr:gpg "" `(--yes --decrypt --override-session-key ,key))
(tr:assert-identity name)))))
plain-files)
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