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services: wireguard: Add DNS config field.

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* gnu/services/vpn.scm (wireguard-configuration)[dns]: New field.
(wireguard-configuration-file): Honor it.
* doc/guix.texi: Document it.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
This commit is contained in:
Nathan Dehnel 2021-12-21 14:18:22 -06:00 committed by Mathieu Othacehe
parent dce3415a74
commit 6fb5459e8b
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2 changed files with 14 additions and 2 deletions
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3
doc/guix.texi
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@ -28632,6 +28632,9 @@ The IP addresses to be assigned to the above interface.
@item @code{port} (default: @code{51820})
The port on which to listen for incoming connections.
@item @code{dns} (default: @code{#f})
The DNS server(s) to announce to VPN clients via DHCP.
@item @code{private-key} (default: @code{"/etc/wireguard/private.key"})
The private key file for the interface. It is automatically generated if
the file does not exist.

13
gnu/services/vpn.scm
View file

@ -8,6 +8,7 @@
;;; Copyright © 2021 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2021 Raghav Gururajan <rg@raghavgururajan.name>
;;; Copyright © 2021 jgart <jgart@dismail.de>
;;; Copyright © 2021 Nathan Dehnel <ncdehnel@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -67,6 +68,7 @@ (define-module (gnu services vpn)
wireguard-configuration-interface
wireguard-configuration-addresses
wireguard-configuration-port
wireguard-configuration-dns
wireguard-configuration-private-key
wireguard-configuration-peers
@ -715,7 +717,9 @@ (define-record-type* <wireguard-configuration>
(private-key wireguard-configuration-private-key ;string
(default "/etc/wireguard/private.key"))
(peers wireguard-configuration-peers ;list of <wiregard-peer>
(default '())))
(default '()))
(dns wireguard-configuration-dns ;list of strings
(default #f)))
(define (wireguard-configuration-file config)
(define (peer->config peer)
@ -739,7 +743,7 @@ (define (peer->config peer)
"\n"))))
(match-record config <wireguard-configuration>
(wireguard interface addresses port private-key peers)
(wireguard interface addresses port private-key peers dns)
(let* ((config-file (string-append interface ".conf"))
(peers (map peer->config peers))
(config
@ -755,6 +759,7 @@ (define (peer->config peer)
Address = ~a
PostUp = ~a set %i private-key ~a
~a
~a
~{~a~^~%~}"
#$(string-join addresses ",")
#$(file-append wireguard "/bin/wg")
@ -762,6 +767,10 @@ (define (peer->config peer)
#$(if port
(format #f "ListenPort = ~a" port)
"")
#$(if dns
(format #f "DNS = ~a"
(string-join dns ","))
"")
(list #$@peers)))))))))
(file-append config "/" config-file))))