services: wireguard: Add the bootstrap-private-key? field.

The syntax from using the private-key field is more convenient than writing a
custom PreUp command (more formatting and preshared keys). Instead of trying
to guess if private-key is/is not a file path, add an option to disable
bootstrapping while still using private-key.

* gnu/services/vpn.scm (<wireguard-configuration>): Add
bootstrap-private-key?.
(wireguard-activation): Check bootstrap-private-key? before bootstrapping.
* doc/guix.texi (VPN Services)[wireguard]: Document it.

Change-Id: I6ba71ad58b26743057a221a54a246369022f83a5
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
This commit is contained in:
Richard Sent 2024-12-04 15:59:34 -05:00 committed by Mathieu Othacehe
parent aa12068c91
commit 1a17a0f90d
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2 changed files with 53 additions and 30 deletions

View file

@ -34630,6 +34630,25 @@ if the file does not exist. If this field is @code{#f}, a private key
is not automatically created and the path is not serialized to the
configuration file.
@item @code{bootstrap-private-key?} (default: @code{#t})
Whether or not the private key should be generated automatically if it
does not exist.
Setting this to @code{#f} allows one to set the private key using
command substitution. One example shown in the @code{wg-quick(8)}
manual is retrieving a private key using @code{password-store}. This
can be achieved with the following code:
@lisp
(wireguard-configuration
(private-key
#~(string-append "<("
#$(file-append password-store "/bin/pass")
;; Wireguard replaces %i with the interface name.
" WireGuard/private-keys/%i)")))
@end lisp
@item @code{peers} (default: @code{'()})
The authorized peers on this interface. This is a list of
@var{wireguard-peer} records.

View file

@ -80,6 +80,7 @@ (define-module (gnu services vpn)
wireguard-configuration-monitor-ips?
wireguard-configuration-monitor-ips-interval
wireguard-configuration-private-key
wireguard-configuration-bootstrap-private-key?
wireguard-configuration-peers
wireguard-configuration-pre-up
wireguard-configuration-post-up
@ -733,34 +734,36 @@ (define-record-type* <wireguard-peer>
(define-record-type* <wireguard-configuration>
wireguard-configuration make-wireguard-configuration
wireguard-configuration?
(wireguard wireguard-configuration-wireguard ;file-like
(default wireguard-tools))
(interface wireguard-configuration-interface ;string
(default "wg0"))
(addresses wireguard-configuration-addresses ;string
(default '("10.0.0.1/32")))
(port wireguard-configuration-port ;integer
(default 51820))
(private-key wireguard-configuration-private-key ;maybe-string
(default "/etc/wireguard/private.key"))
(peers wireguard-configuration-peers ;list of <wiregard-peer>
(default '()))
(dns wireguard-configuration-dns ;list of strings
(default '()))
(monitor-ips? wireguard-configuration-monitor-ips? ;boolean
(default #f))
(monitor-ips-interval wireguard-configuration-monitor-ips-interval
(default '(next-minute (range 0 60 5)))) ;string | list
(pre-up wireguard-configuration-pre-up ;list of strings
(default '()))
(post-up wireguard-configuration-post-up ;list of strings
(default '()))
(pre-down wireguard-configuration-pre-down ;list of strings
(default '()))
(post-down wireguard-configuration-post-down ;list of strings
(default '()))
(table wireguard-configuration-table ;string
(default "auto")))
(wireguard wireguard-configuration-wireguard ;file-like
(default wireguard-tools))
(interface wireguard-configuration-interface ;string
(default "wg0"))
(addresses wireguard-configuration-addresses ;string
(default '("10.0.0.1/32")))
(port wireguard-configuration-port ;integer
(default 51820))
(private-key wireguard-configuration-private-key ;maybe-string
(default "/etc/wireguard/private.key"))
(bootstrap-private-key? wireguard-configuration-bootstrap-private-key? ;boolean
(default #t))
(peers wireguard-configuration-peers ;list of <wiregard-peer>
(default '()))
(dns wireguard-configuration-dns ;list of strings
(default '()))
(monitor-ips? wireguard-configuration-monitor-ips? ;boolean
(default #f))
(monitor-ips-interval wireguard-configuration-monitor-ips-interval
(default '(next-minute (range 0 60 5)))) ;string | list
(pre-up wireguard-configuration-pre-up ;list of strings
(default '()))
(post-up wireguard-configuration-post-up ;list of strings
(default '()))
(pre-down wireguard-configuration-pre-down ;list of strings
(default '()))
(post-down wireguard-configuration-post-down ;list of strings
(default '()))
(table wireguard-configuration-table ;string
(default "auto")))
(define (wireguard-configuration-file config)
(define (peer->config peer)
@ -836,12 +839,13 @@ (define lines
(define (wireguard-activation config)
(match-record config <wireguard-configuration>
(private-key wireguard)
(private-key bootstrap-private-key? wireguard)
#~(begin
(use-modules (guix build utils)
(ice-9 popen)
(ice-9 rdelim))
(when #$private-key
(when (and #$private-key
#$bootstrap-private-key?)
(mkdir-p (dirname #$private-key))
(unless (file-exists? #$private-key)
(let* ((pipe