;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Danny Milosavljevic <dannym@scratchpost.org>
;;; Copyright © 2020 Robin Green <greenrd@greenrd.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 services auditd)
  #:use-module (gnu services)
  #:use-module (gnu services configuration)
  #:use-module (gnu services base)
  #:use-module (gnu services shepherd)
  #:use-module (gnu packages admin)
  #:use-module (guix records)
  #:use-module (guix gexp)
  #:use-module (guix packages)
  #:export (auditd-configuration
            auditd-service-type
            %default-auditd-configuration-directory))

(define auditd.conf
  (plain-file "auditd.conf" "log_file = /var/log/audit.log\nlog_format = \
ENRICHED\nfreq = 1\nspace_left = 5%\nspace_left_action = \
syslog\nadmin_space_left_action = ignore\ndisk_full_action = \
ignore\ndisk_error_action = syslog\n"))

(define %default-auditd-configuration-directory
  (computed-file "auditd"
                 #~(begin
                     (mkdir #$output)
                     (copy-file #$auditd.conf
                                (string-append #$output "/auditd.conf")))))

(define-record-type* <auditd-configuration>
  auditd-configuration make-auditd-configuration
  auditd-configuration?
  (audit                   auditd-configuration-audit                          ; package
                           (default audit))
  (configuration-directory auditd-configuration-configuration-directory))      ; file-like

(define (auditd-shepherd-service config)
  (let* ((audit (auditd-configuration-audit config))
         (configuration-directory (auditd-configuration-configuration-directory config)))
    (list (shepherd-service
           (documentation "Auditd allows you to audit file system accesses and process execution.")
           (provision '(auditd))
           (start #~(make-forkexec-constructor
                     (list (string-append #$audit "/sbin/auditd") "-c" #$configuration-directory)
                     #:pid-file "/var/run/auditd.pid"))
           (stop #~(make-kill-destructor))))))

(define auditd-service-type
  (service-type (name 'auditd)
                (description "Allows auditing file system accesses and process execution.")
                (extensions
                 (list
                  (service-extension shepherd-root-service-type
                                     auditd-shepherd-service)))
                (default-value
                  (auditd-configuration
                   (configuration-directory %default-auditd-configuration-directory)))))
ilosavljevic</td></tr>
<tr><td><span title='2020-05-08 16:30:50 +0200'>2020-05-08</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=dd0804c67e99914eecc471fdb92f4220425a1cbc'>services: Add descriptions.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-02 13:00:24 +0800'>2020-05-02</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=5a0b78e62bc3122998990cea5ee17bdb2789aada'>services: dnsmasq: Support the --address flag.</a><span class='msg-avail'>...</span></td><td>Pierre Langlois</td></tr>
<tr><td><span title='2020-01-22 20:18:56 +0800'>2020-01-22</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=244db6bbc88fae7ba3426c057cfecb8706015939'>services: knot-resolver: Manage a root TA at /var/cache/knot-resolver.</a><span class='msg-avail'>...</span></td><td>宋文武</td></tr>
<tr><td><span title='2019-11-11 20:30:53 +0800'>2019-11-11</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=6ec68c69b08a873c5896dae9f8f234e44ea45738'>services: Add knot-resolver-service-type.</a><span class='msg-avail'>...</span></td><td>宋文武</td></tr>
<tr><td><span title='2019-04-27 15:56:35 +0200'>2019-04-27</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=b8e2bd4fc89f7fd60f74949563fb834dbd8f7660'>gnu: knot: Fix typos.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2019-04-27 13:02:31 +0200'>2019-04-27</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=6cd7b1be7ea2b675e369c6cbb35b31b3c496648b'>gnu: knot: Add configuration fields.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2019-04-27 00:19:41 +0200'>2019-04-27</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=435551f0faccb4f91cadc709ffb9819d850d7e69'>services: knot: Fix configuration file generation.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-26 18:37:48 +0200'>2019-04-26</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=e379d1b5efad293951fd35920bbf142376058696'>gnu: dns: Fix configuration formating.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2019-04-25 21:44:55 +0200'>2019-04-25</span></td><td><a href='/guix/commit/gnu/services/dns.scm?id=92eb600f8a94afa36142f8f145efaa485b632433'>gnu: knot-service: Add includes field in configuration.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>