blob: b576c395ffdbd6960472fe89da51e6f640a481bf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.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 avahi)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services dmd)
#:use-module (gnu services dbus)
#:use-module (gnu system shadow)
#:use-module (gnu packages avahi)
#:use-module (gnu packages admin)
#:use-module (guix records)
#:use-module (guix gexp)
#:export (avahi-service))
;;; Commentary:
;;;
;;; This module provides service definitions for the Avahi
;;; "zero-configuration" tool set.
;;;
;;; Code:
;; TODO: Export.
(define-record-type* <avahi-configuration>
avahi-configuration make-avahi-configuration
avahi-configuration?
(avahi avahi-configuration-avahi ;<package>
(default avahi))
(host-name avahi-configuration-host-name) ;string
(publish? avahi-configuration-publish?) ;Boolean
(ipv4? avahi-configuration-ipv4?) ;Boolean
(ipv6? avahi-configuration-ipv6?) ;Boolean
(wide-area? avahi-configuration-wide-area?) ;Boolean
(domains-to-browse avahi-configuration-domains-to-browse)) ;list of strings
(define* (configuration-file config)
"Return an avahi-daemon configuration file based on CONFIG, an
<avahi-configuration>."
(define (bool value)
(if value "yes\n" "no\n"))
(define host-name (avahi-configuration-host-name config))
(plain-file "avahi-daemon.conf"
(string-append
"[server]\n"
(if host-name
(string-append "host-name=" host-name "\n")
"")
"browse-domains=" (string-join
(avahi-configuration-domains-to-browse
config))
"\n"
"use-ipv4=" (bool (avahi-configuration-ipv4? config))
"use-ipv6=" (bool (avahi-configuration-ipv6? config))
"[wide-area]\n"
"enable-wide-area=" (bool (avahi-configuration-wide-area? config))
"[publish]\n"
"disable-publishing="
(bool (not (avahi-configuration-publish? config))))))
(define %avahi-accounts
;; Account and group for the Avahi daemon.
(list (user-group (name "avahi") (system? #t))
(user-account
(name "avahi")
(group "avahi")
(system? #t)
(comment "Avahi daemon user")
(home-directory "/var/empty")
(shell #~(string-append #$shadow "/sbin/nologin")))))
(define %avahi-activation
;; Activation gexp.
#~(begin
(use-modules (guix build utils))
(mkdir-p "/var/run/avahi-daemon")))
(define (avahi-dmd-service config)
"Return a list of <dmd-service> for CONFIG."
(let ((config (configuration-file config))
(avahi (avahi-configuration-avahi config)))
(list (dmd-service
(documentation "Run the Avahi mDNS/DNS-SD responder.")
(provision '(avahi-daemon))
(requirement '(dbus-system networking))
(start #~(make-forkexec-constructor
(list (string-append #$avahi "/sbin/avahi-daemon")
"--syslog" "-f" #$config)))
(stop #~(make-kill-destructor))))))
(define avahi-service-type
(service-type (name 'avahi)
(extensions
(list (service-extension dmd-root-service-type
avahi-dmd-service)
(service-extension dbus-root-service-type
(compose list
avahi-configuration-avahi))
(service-extension account-service-type
(const %avahi-accounts))
(service-extension activation-service-type
(const %avahi-activation))
(service-extension nscd-service-type
(const (list nss-mdns)))))))
(define* (avahi-service #:key (avahi avahi)
host-name
(publish? #t)
(ipv4? #t) (ipv6? #t)
wide-area?
(domains-to-browse '()))
"Return a service that runs @command{avahi-daemon}, a system-wide
mDNS/DNS-SD responder that allows for service discovery and
\"zero-configuration\" host name lookups (see @uref{http://avahi.org/}).
If @var{host-name} is different from @code{#f}, use that as the host name to
publish for this machine; otherwise, use the machine's actual host name.
When @var{publish?} is true, publishing of host names and services is allowed;
in particular, avahi-daemon will publish the machine's host name and IP
address via mDNS on the local network.
When @var{wide-area?} is true, DNS-SD over unicast DNS is enabled.
Boolean values @var{ipv4?} and @var{ipv6?} determine whether to use IPv4/IPv6
sockets."
(service avahi-service-type
(avahi-configuration
(avahi avahi) (host-name host-name)
(publish? publish?) (ipv4? ipv4?) (ipv6? ipv6?)
(wide-area? wide-area?)
(domains-to-browse domains-to-browse))))
;;; avahi.scm ends here
|