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;;; Shroud
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;;
;;; Shroud 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.
;;;
;;; Shroud 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 Shroud. If not, see <http://www.gnu.org/licenses/>.
(define-module (shroud ui hide)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (ice-9 vlist)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-37)
#:use-module (shroud utils)
#:use-module (shroud secret)
#:use-module (shroud ui)
#:export (shroud-hide))
(define (show-help)
(format #t "Usage: shroud hide [OPTION] ID KEY=VALUE ...
Add a new secret named ID to the database.~%")
(display "
-e, --edit replace existing username/password if it exists")
(display "
-h, --help display this help and exit")
(display "
--version display version information and exit")
(newline))
(define %options
(list (option '(#\e "edit") #f #f
(lambda (opt name arg result)
(alist-cons 'edit? #t result)))
(option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '("version") #f #f
(lambda args
(show-version-and-exit)))))
(define %default-options '())
(define (process-args args)
(args-fold args %options
(lambda (opt name arg result)
(leave "~A: unrecognized option" name))
(lambda (arg result)
;; The first unnamed argument is the secret id. Each
;; subsequent argument is a key/value pair.
(if (assq-ref result 'id)
(match (string-split arg #\=)
((key value)
(alist-cons 'secret (cons key value) result))
(_ (leave "~A: invalid key/value pair" arg)))
(alist-cons 'id arg result)))
%default-options))
(define (shroud-hide config db . args)
(let* ((opts (process-args args))
(id (assq-ref opts 'id))
(contents (filter-map (match-lambda
(('secret . pair) pair)
(_ #f))
opts))
(edit? (assq-ref opts 'edit?)))
(unless id
(leave "no secret id specified"))
(when (null? contents)
(leave "no key/value pairs specified"))
(let* ((db (secrets-by-id (force db)))
(existing (vhash-ref db id))
(vcons (if existing vhash-replace vhash-cons)))
(when (and (not edit?) existing)
(leave "~a: secret already defined" id))
(when (and edit? (not existing))
(leave "~a: secret undefined" id))
(let* ((contents (if edit?
(alist-compact
(append contents (secret-contents existing)))
contents))
(secret (make-secret id contents)))
(vhash-values (vcons id secret db))))))
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