;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2021 Brice Waegeneire <brice@waegenei.re>
;;;
;;; 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 services security-token)
  #:use-module (gnu services)
  #:use-module (gnu services shepherd)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages base)
  #:use-module (gnu packages security-token)
  #:use-module (gnu system shadow)
  #:use-module (guix gexp)
  #:use-module (guix modules)
  #:use-module (guix records)
  #:use-module (ice-9 match)
  #:use-module (srfi srfi-26)
  #:export (pcscd-configuration
            pcscd-configuration?
            pcscd-configuration-pcsc-lite
            pcscd-configuration-usb-drivers
            pcscd-service-type))

;;;
;;; PC/SC Smart Card Daemon
;;;

(define-record-type* <pcscd-configuration>
  pcscd-configuration make-pcscd-configuration pcscd-configuration?
  (pcsc-lite pcscd-configuration-pcsc-lite
             (default pcsc-lite))
  (usb-drivers pcscd-configuration-usb-drivers
               (default (list ccid))))

(define pcscd-shepherd-service
  (match-lambda
    (($ <pcscd-configuration> pcsc-lite)
     (with-imported-modules (source-module-closure
                             '((gnu build shepherd)))
       (shepherd-service
        (documentation "PC/SC Smart Card Daemon")
        (provision '(pcscd))
        (requirement '(syslogd))
        (modules '((gnu build shepherd)))
        (start #~(lambda _
                   (let ((socket "/run/pcscd/pcscd.comm"))
                     (when (file-exists? socket)
                       (delete-file socket)))
                   (fork+exec-command
                    (list #$(file-append pcsc-lite "/sbin/pcscd")
                          "--foreground")
                    #:log-file "/var/log/pcscd.log")))
        (stop #~(make-kill-destructor)))))))

(define pcscd-activation
  (match-lambda
    (($ <pcscd-configuration> pcsc-lite usb-drivers)
     (with-imported-modules (source-module-closure
                             '((guix build utils)))
       #~(begin
           (use-modules (guix build utils))
           ;; XXX: We can't use (guix utils) because it requires a
           ;; dynamically-linked Guile, hence the duplicate switch-symlinks.
           (define (switch-symlinks link target)
             (let ((pivot (string-append link ".new")))
               (symlink target pivot)
               (rename-file pivot link)))
           (mkdir-p "/var/lib")
           (switch-symlinks "/var/lib/pcsc"
                            #$(directory-union
                               "pcsc"
                               (map (cut file-append <> "/pcsc")
                                    usb-drivers))))))))

(define pcscd-service-type
  (service-type
   (name 'pcscd)
   (description
    "Run @command{pcscd}, the PC/SC smart card daemon.")
   (extensions
    (list (service-extension shepherd-root-service-type
                             (compose list pcscd-shepherd-service))
          (service-extension activation-service-type
                             pcscd-activation)))
   (default-value (pcscd-configuration))))
-avail'>...</span></td><td>Thiago Jung Bauermann</td></tr>
<tr><td><span title='2021-05-10 22:33:08 -0400'>2021-05-10</span></td><td><a href='/guix/commit/.gitignore?id=abff6f0fac2104c3ba2129166a4409568e9c7b16'>.gitignore: Ignore .mo files.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-05-05 16:31:05 -0400'>2021-05-05</span></td><td><a href='/guix/commit/.gitignore?id=214b77b5e749e2ca5891bfc87f946031cf8934e6'>.gitignore: Ignore .tarball-ignore.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-04-23 23:39:33 -0400'>2021-04-23</span></td><td><a href='/guix/commit/.gitignore?id=8b5339acfe381dca887b38634dcfdecae738ce7b'>.gitignore: Ignore release artifacts.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-04-23 21:32:46 -0400'>2021-04-23</span></td><td><a href='/guix/commit/.gitignore?id=129823c4997c65ad0ee711ab2fcfc91d00e6278c'>.gitignore: Ignore generated .pot files.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-10-20 19:16:21 +0200'>2020-10-20</span></td><td><a href='/guix/commit/.gitignore?id=e6994bff2ef461a2860e4207095746a5565cbf0e'>gitignore: Ignore generated guile binary and intermediate products.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-09-17 14:10:42 +0200'>2020-09-17</span></td><td><a href='/guix/commit/.gitignore?id=cabac732deffafc796537658a6c33c6c4aec821e'>guix-install.sh: Support OpenRC.</a><span class='msg-avail'>...</span></td><td>Morgan Smith</td></tr>
<tr><td><span title='2020-07-17 15:23:53 +0200'>2020-07-17</span></td><td><a href='/guix/commit/.gitignore?id=d6b05ba3534b030f8de976e340c19ac8a4118ff4'>gitignore: Don't ignore daemon source code.</a><span class='msg-avail'>...</span></td><td>Jakub Kądziołka</td></tr>
<tr><td><span title='2020-06-28 13:28:25 +0200'>2020-06-28</span></td><td><a href='/guix/commit/.gitignore?id=b9edefbc46da76fea6d56e08462618a398192189'>.gitignore: Ignore 'etc/committer.scm'.</a><span class='msg-avail'>...</span></td><td>Brice Waegeneire</td></tr>
<tr><td><span title='2020-05-16 15:37:41 +0200'>2020-05-16</span></td><td><a href='/guix/commit/.gitignore?id=1a1faa78b0498fbb71f1533beb4b65817c1d3f2a'>etc: Add a systemd unit to bind-mount @storedir@ read-only.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-05-14 23:05:42 -0400'>2020-05-14</span></td><td><a href='/guix/commit/.gitignore?id=cb21ae76714f1873d3b3fb40d5135f00ec104b85'>etc: indent-code.el: Use the --quick option.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-03-30 12:24:55 +0200'>2020-03-30</span></td><td><a href='/guix/commit/.gitignore?id=6e27d1088da07380872f0df9f308b674536cefc8'>.gitignore: Ignore test results in tests/services.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-03-11 02:45:33 +0100'>2020-03-11</span></td><td><a href='/guix/commit/.gitignore?id=73fbe04107d38f4561636c74d28d7a4935cbb1ef'>Add system start-up files for guix-daemon.</a><span class='msg-avail'>...</span></td><td>Danny Milosavljevic</td></tr>