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authorMaxim Cournoyer <maxim.cournoyer@gmail.com>2019-09-03 10:14:59 +0900
committerMaxim Cournoyer <maxim.cournoyer@gmail.com>2019-09-08 23:15:31 +0900
commit5658ae8a0ad5d988765944b7e783b2bdc23a7f48 (patch)
tree248c98abc9237379c917d94fec50d7f18ed366a6 /gnu/services/networking.scm
parentac73f504cf997559869f67a6c308cf3b19d253ea (diff)
downloadguix-5658ae8a0ad5d988765944b7e783b2bdc23a7f48.tar
guix-5658ae8a0ad5d988765944b7e783b2bdc23a7f48.tar.gz
services: ntp: Support different NTP server types and options.
* gnu/services/networking.scm (ntp-server-types): New enum. (<ntp-server>): New record type. (ntp-server->string): New procedure. (%ntp-servers): Define in terms of <htp-server> records. Use the first entrypoint server as a pool instead of a list of static servers. This is more resilient since a new server of the pool can be interrogated on every request. Add the 'iburst' options. (ntp-configuration-servers): Define a custom accessor that warns but honors the now deprecated server format. (<ntp-configuration>): Use it. (%openntpd-servers): New variable, (<openntpd-configuration>): Use it, as a pool ('servers' field) instead of a regular server. * tests/networking.scm: New file. * Makefile.am (SCM_TESTS): Register it. * doc/guix.texi: Update documentation.
Diffstat (limited to 'gnu/services/networking.scm')
-rw-r--r--gnu/services/networking.scm108
1 files changed, 90 insertions, 18 deletions
diff --git a/gnu/services/networking.scm b/gnu/services/networking.scm
index 13a5c6c98d..c45bfcdad9 100644
--- a/gnu/services/networking.scm
+++ b/gnu/services/networking.scm
@@ -51,6 +51,7 @@
#:use-module (guix records)
#:use-module (guix modules)
#:use-module (guix deprecation)
+ #:use-module (rnrs enums)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-26)
@@ -72,13 +73,22 @@
dhcpd-configuration-pid-file
dhcpd-configuration-interfaces
- %ntp-servers
-
ntp-configuration
ntp-configuration?
+ ntp-configuration-ntp
+ ntp-configuration-servers
+ ntp-allow-large-adjustment?
+
+ %ntp-servers
+ ntp-server
+ ntp-server-type
+ ntp-server-address
+ ntp-server-options
+
ntp-service
ntp-service-type
+ %openntpd-servers
openntpd-configuration
openntpd-configuration?
openntpd-service-type
@@ -292,31 +302,87 @@ Protocol (DHCP) client, on all the non-loopback network interfaces."
(list (service-extension shepherd-root-service-type dhcpd-shepherd-service)
(service-extension activation-service-type dhcpd-activation)))))
-(define %ntp-servers
- ;; Default set of NTP servers. These URLs are managed by the NTP Pool project.
- ;; Within Guix, Leo Famulari <leo@famulari.name> is the administrative contact
- ;; for this NTP pool "zone".
- '("0.guix.pool.ntp.org"
- "1.guix.pool.ntp.org"
- "2.guix.pool.ntp.org"
- "3.guix.pool.ntp.org"))
-
;;;
;;; NTP.
;;;
-;; TODO: Export.
+(define ntp-server-types (make-enumeration
+ '(pool
+ server
+ peer
+ broadcast
+ manycastclient)))
+
+(define-record-type* <ntp-server>
+ ntp-server make-ntp-server
+ ntp-server?
+ ;; The type can be one of the symbols of the NTP-SERVER-TYPE? enumeration.
+ (type ntp-server-type
+ (default 'server))
+ (address ntp-server-address) ; a string
+ ;; The list of options can contain single option names or tuples in the form
+ ;; '(name value).
+ (options ntp-server-options
+ (default '())))
+
+(define (ntp-server->string ntp-server)
+ ;; Serialize the NTP server object as a string, ready to use in the NTP
+ ;; configuration file.
+ (define (flatten lst)
+ (reverse
+ (let loop ((x lst)
+ (res '()))
+ (if (list? x)
+ (fold loop res x)
+ (cons (format #f "~s" x) res)))))
+
+ (match ntp-server
+ (($ <ntp-server> type address options)
+ ;; XXX: It'd be neater if fields were validated at the syntax level (for
+ ;; static ones at least). Perhaps the Guix record type could support a
+ ;; predicate property on a field?
+ (unless (enum-set-member? type ntp-server-types)
+ (error "Invalid NTP server type" type))
+ (string-join (cons* (symbol->string type)
+ address
+ (flatten options))))))
+
+(define %ntp-servers
+ ;; Default set of NTP servers. These URLs are managed by the NTP Pool project.
+ ;; Within Guix, Leo Famulari <leo@famulari.name> is the administrative contact
+ ;; for this NTP pool "zone".
+ (list
+ (ntp-server
+ (type 'pool)
+ (address "0.guix.pool.ntp.org")
+ (options '("iburst"))))) ;as recommended in the ntpd manual
+
(define-record-type* <ntp-configuration>
ntp-configuration make-ntp-configuration
ntp-configuration?
(ntp ntp-configuration-ntp
(default ntp))
- (servers ntp-configuration-servers
+ (servers %ntp-configuration-servers ;list of <ntp-server> objects
(default %ntp-servers))
(allow-large-adjustment? ntp-allow-large-adjustment?
(default #t))) ;as recommended in the ntpd manual
+(define (ntp-configuration-servers ntp-configuration)
+ ;; A wrapper to support the deprecated form of this field.
+ (let ((ntp-servers (%ntp-configuration-servers ntp-configuration)))
+ (match ntp-servers
+ (((? string?) (? string?) ...)
+ (format (current-error-port) "warning: Defining NTP servers as strings is \
+deprecated. Please use <ntp-server> records instead.\n")
+ (map (lambda (addr)
+ (ntp-server
+ (type 'server)
+ (address addr)
+ (options '()))) ntp-servers))
+ ((($ <ntp-server>) ($ <ntp-server>) ...)
+ ntp-servers))))
+
(define ntp-shepherd-service
(match-lambda
(($ <ntp-configuration> ntp servers allow-large-adjustment?)
@@ -324,8 +390,7 @@ Protocol (DHCP) client, on all the non-loopback network interfaces."
;; TODO: Add authentication support.
(define config
(string-append "driftfile /var/run/ntpd/ntp.drift\n"
- (string-join (map (cut string-append "server " <>)
- servers)
+ (string-join (map ntp-server->string servers)
"\n")
"
# Disable status queries as a workaround for CVE-2013-5211:
@@ -335,7 +400,11 @@ restrict -6 default kod nomodify notrap nopeer noquery limited
# Yet, allow use of the local 'ntpq'.
restrict 127.0.0.1
-restrict -6 ::1\n"))
+restrict -6 ::1
+
+# This is required to use servers from a pool directive when using the 'nopeer'
+# option by default, as documented in the 'ntp.conf' manual.
+restrict source notrap nomodify noquery\n"))
(define ntpd.conf
(plain-file "ntpd.conf" config))
@@ -409,6 +478,9 @@ make an initial adjustment of more than 1,000 seconds."
;;; OpenNTPD.
;;;
+(define %openntpd-servers
+ (map ntp-server-address %ntp-servers))
+
(define-record-type* <openntpd-configuration>
openntpd-configuration make-openntpd-configuration
openntpd-configuration?
@@ -422,9 +494,9 @@ make an initial adjustment of more than 1,000 seconds."
(sensor openntpd-sensor
(default '()))
(server openntpd-server
- (default %ntp-servers))
- (servers openntpd-servers
(default '()))
+ (servers openntpd-servers
+ (default %openntpd-servers))
(constraint-from openntpd-constraint-from
(default '()))
(constraints-from openntpd-constraints-from