;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2017 Julien Lepiller ;;; Copyright © 2020 Pierre Langlois ;;; Copyright © 2021 Maxime Devos ;;; Copyright © 2022 Remco van 't Veer ;;; ;;; 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 . (define-module (gnu services dns) #:use-module (gnu services) #:use-module (gnu services configuration) #:use-module (gnu services shepherd) #:use-module (gnu system shadow) #:use-module (gnu packages admin) #:use-module (gnu packages dns) #:use-module (guix packages) #:use-module (guix records) #:use-module (guix gexp) #:use-module (guix modules) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) #:use-module (ice-9 match) #:use-module (ice-9 regex) #:export (knot-service-type knot-acl-configuration knot-key-configuration knot-keystore-configuration knot-zone-configuration knot-remote-configuration knot-policy-configuration knot-configuration define-zone-entries zone-file zone-entry knot-resolver-service-type knot-resolver-configuration dnsmasq-service-type dnsmasq-configuration)) ;;; ;;; Knot DNS. ;;; (define-record-type* knot-key-configuration make-knot-key-configuration knot-key-configuration? (id knot-key-configuration-id (default "")) (algorithm knot-key-configuration-algorithm (default #f)); one of #f, or an algorithm name (secret knot-key-configuration-secret (default ""))) (define-record-type* knot-acl-configuration make-knot-acl-configuration knot-acl-configuration? (id knot-acl-configuration-id (default "")) (address knot-acl-configuration-address (default '())) (key knot-acl-configuration-key (default '())) (action knot-acl-configuration-action (default '())) (deny? knot-acl-configuration-deny? (default #f))) (define-record-type* zone-entry make-zone-entry zone-entry? (name zone-entry-name (default "@")) (ttl zone-entry-ttl (default "")) (class zone-entry-class (default "IN")) (type zone-entry-type (default "A")) (data zone-entry-data (default ""))) (define-record-type* zone-file make-zone-file zone-file? (entries zone-file-entries (default '())) (origin zone-file-origin (default "")) (ns zone-file-ns (default "ns")) (mail zone-file-mail (default "hostmaster")) (serial zone-file-serial (default 1)) (refresh zone-file-refresh (default (* 12 3600))) (retry zone-file-retry (default (* 15 60))) (expiry zone-file-expiry (default (* 2 7 24 3600))) (nx zone-file-nx (default 3600))) (define-record-type* knot-keystore-configuration make-knot-keystore-configuration knot-keystore-configuration? (id knot-keystore-configuration-id (default "")) (backend knot-keystore-configuration-backend (default 'pem)) (config knot-keystore-configuration-config (default "/var/lib/knot/keys/keys"))) (define-record-type* knot-policy-configuration make-knot-policy-configuration knot-policy-configuration? (id knot-policy-configuration-id (default "")) (keystore knot-policy-configuration-keystore (default "default")) (manual? knot-policy-configuration-manual? (default #f)) (single-type-signing? knot-policy-configuration-single-type-signing? (default #f)) (algorithm knot-policy-configuration-algorithm (default "ecdsap256sha256")) (ksk-size knot-policy-configuration-ksk-size (default 256)) (zsk-size knot-policy-configuration-zsk-size (default 256)) (dnskey-ttl knot-policy-configuration-dnskey-ttl (default 'default)) (zsk-lifetime knot-policy-configuration-zsk-lifetime (default (* 30 24 3600))) (propagation-delay knot-policy-configuration-propagation-delay (default (* 24 3600))) (rrsig-lifetime knot-policy-configuration-rrsig-lifetime (default (* 14 24 3600))) (rrsig-refresh knot-policy-configuration-rrsig-refresh (default (* 7 24 3600))) (nsec3? knot-policy-configuration-nsec3? (default #f)) (nsec3-iterations knot-policy-configuration-nsec3-iterations (default 5)) (nsec3-salt-length knot-policy-configuration-nsec3-salt-length (default 8)) (nsec3-salt-lifetime knot-policy-configuration-nsec3-salt-lifetime (default (* 30 24 3600)))) (define-record-type* knot-zone-configuration make-knot-zone-configuration knot-zone-configuration? (domain knot-zone-configuration-domain (default "")) (file knot-zone-configuration-file (default "")) ; the file where this zone is saved. (zone knot-zone-configuration-zone (default (zone-file))) ; initial content of the zone file (master knot-zone-configuration-master (default '())) (ddns-master knot-zone-configuration-ddns-master (default #f)) (notify knot-zone-configuration-notify (default '())) (acl knot-zone-configuration-acl (default '())) (semantic-checks? knot-zone-configuration-semantic-checks? (default #f)) (zonefile-sync knot-zone-configuration-zonefile-sync (default 0)) (zonefile-load knot-zone-configuration-zonefile-load (default #f)) (journal-content knot-zone-configuration-journal-content (default #f)) (max-journal-usage knot-zone-configuration-max-journal-usage (default #f)) (max-journal-depth knot-zone-configuration-max-journal-depth (default #f)) (max-zone-size knot-zone-configuration-max-zone-size (default #f)) (dnssec-policy knot-zone-configuration-dnssec-policy (default #f)) (serial-policy knot-zone-configuration-serial-policy (default 'increment))) (define-record-type* knot-remote-configuration make-knot-remote-configuration knot-remote-configuration? (id knot-remote-configuration-id (default "")) (address knot-remote-configuration-address (default '())) (via knot-remote-configuration-via (default '())) (key knot-remote-configuration-key (default #f))) (define-record-type* knot-configuration make-knot-configuration knot-configuration? (knot knot-configuration-knot (default knot)) (run-directory knot-configuration-run-directory (default "/var/run/knot")) (includes knot-configuration-includes (default '())) (listen-v4 knot-configuration-listen-v4 (default "0.0.0.0")) (listen-v6 knot-configuration-listen-v6 (default "::")) (listen-port knot-configuration-listen-port (default 53)) (keys knot-configuration-keys (default '())) (keystores knot-configuration-keystores (default '())) (acls knot-configuration-acls (default '())) (remotes knot-configuration-remotes (default '())) (policies knot-configuration-policies (default '())) (zones knot-configuration-zones (default '()))) (define-syntax define-zone-entries (syntax-rules () ((_ id (name ttl class type data) ...) (define id (list (make-zone-entry name ttl class type data) ...))))) (define (error-out msg) (raise (condition (&message (message msg))))) (define (verify-knot-key-configuration key) (unless (knot-key-configuration? key) (error-out "keys must be a list of only knot-key-configuration.")) (let ((id (knot-key-configuration-id key))) (unless (and (string? id) (not (equal? id ""))) (error-out "key id must be a non empty string."))) (unless (memq (knot-key-configuration-algorithm key) '(#f hmac-md5 hmac-sha1 hmac-sha224 hmac-sha256 hmac-sha384 hmac-sha512)) (error-out "algorithm must be one of: #f, 'hmac-md5, 'hmac-sha1, 'hmac-sha224, 'hmac-sha256, 'hmac-sha384 or 'hmac-sha512"))) (define (verify-knot-keystore-configuration keystore) (unless (knot-keystore-conf2022-08-11etc: teams: Add Mathieu Othacehe to mentors....Mathieu Othacehe nless (memq (knot-keystore-configuration-backend keystore) '(pem pkcs11)) (error-out "backend must be one of: 'pem or 'pkcs11"))) (define (verify-knot-policy-configuration policy) (unless (knot-policy-configuration? policy) (error-out "policies must be a list of only knot-policy-configuration.")) (let ((id (knot-policy-configuration-id policy))) (unless (and (string? id) (not (equal? id ""))) (error-out "policy id must be a non empty string.")))) (define (verify-knot-acl-configuration acl) (unless (knot-acl-configuration? acl) (error-out "acls must be a list of only knot-acl-configuration.")) (let ((id (knot-acl-configuration-id acl)) (address (knot-acl-configuration-address acl)) (key (knot-acl-configuration-key acl)) (action (knot-acl-configuration-action acl))) (unless (and (string? id) (not (equal? id ""))) (error-out "acl id must be a non empty string.")) (unless (and (list? address) (every string? address)) (error-out "acl address must be a list of strings."))) (unless (boolean? (knot-acl-configuration-deny? acl)) (error-out "deny? must be #t or #f."))) (define (verify-knot-zone-configuration zone) (unless (knot-zone-configuration? zone) (error-out "zones must be a list of only knot-zone-configuration.")) (let ((domain (knot-zone-configuration-domain zone))) (unless (and (string? domain) (not (equal? domain ""))) (error-out "zone domain must be a non empty string.")))) (define (verify-knot-remote-configuration remote) (unless (knot-remote-configuration? remote) (error-out "remotes must be a list of only knot-remote-configuration.")) (let ((id (knot-remote-configuration-id remote))) (unless (and (string? id) (not (equal? id ""))) (error-out "remote id must be a non empty string.")))) (define (verify-knot-configuration config) (unless (file-like? (knot-configuration-knot config)) (error-out "knot configuration field must be a file-like object.")) (unless (string? (knot-configuration-run-directory config)) (error-out "run-directory must be a string.")) (unless (list? (knot-configuration-includes config)) (error-out "includes must be a list of strings or file-like objects.")) (unless (list? (knot-configuration-keys config)) (error-out "keys must be a list of knot-key-configuration.")) (for-each (lambda (key) (verify-knot-key-configuration key)) (knot-configuration-keys config)) (unless (list? (knot-configuration-keystores config)) (error-out "keystores must be a list of knot-keystore-configuration.")) (for-each (lambda (keystore) (verify-knot-keystore-configuration keystore)) (knot-configuration-keystores config)) (unless (list? (knot-configuration-acls config)) (error-out "acls must be a list of knot-acl-configuration.")) (for-each (lambda (acl) (verify-knot-acl-configuration acl)) (knot-configuration-acls config)) (unless (list? (knot-configuration-zones config)) (error-out "zones must be a list of knot-zone-configuration.")) (for-each (lambda (zone) (verify-knot-zone-configuration zone)) (knot-configuration-zones config)) (unless (list? (knot-configuration-policies config)) (error-out "policies must be a list of knot-policy-configuration.")) (for-each (lambda (policy) (verify-knot-policy-configuration policy)) (knot-configuration-policies config)) (unless (list? (knot-configuration-remotes config)) (error-out "remotes must be a list of knot-remote-configuration.")) (for-each (lambda (remote) (verify-knot-remote-configuration remote)) (knot-configuration-remotes config)) #t) (define (format-string-list l) "Formats a list of string in YAML" (if (eq? l '()) "" (let ((l (reverse l))) (string-append "[" (fold (lambda (x1 x2) (string-append (if (symbol? x1) (symbol->string x1) x1) ", " (if (symbol? x2) (symbol->string x2) x2))) (if (symbol? (car l)) (symbol->string (car l)) (car l)) (cdr l)) "]")))) (define (knot-acl-config acls) (with-output-to-string (lambda () (for-each (lambda (acl-config) (let ((id (knot-acl-configuration-id acl-config)) (address (knot-acl-configuration-address acl-config)) (key (knot-acl-configuration-key acl-config)) (action (knot-acl-configuration-action acl-config)) (deny? (knot-acl-configuration-deny? acl-config))) (format #t " - id: ~a\n" id) (unless (eq? address '()) (format #t " address: ~a\n" (format-string-list address))) (unless (eq? key '()) (format #t " key: ~a\n" (format-string-list key))) (unless (eq? action '()) (format #t " action: ~a\n" (format-string-list action))) (format #t " deny: ~a\n" (if deny? "on" "off")))) acls)))) (define (knot-key-config keys) (with-output-to-string (lambda () (for-each (lambda (key-config) (let ((id (knot-key-configuration-id key-config)) (algorithm (knot-key-configuration-algorithm key-config)) (secret (knot-key-configuration-secret key-config))) (format #t " - id: ~a\n" id) (if algorithm (format #t " algorithm: ~a\n" (symbol->string algorithm))) (format #t " secret: ~a\n" secret))) keys)))) (define (knot-keystore-config keystores) (with-output-to-string (lambda () (for-each (lambda (keystore-config) (let ((id (knot-keystore-configuration-id keystore-config)) (backend (knot-keystore-configuration-backend keystore-config)) (config (knot-keystore-configuration-config keystore-config))) (format #t " - id: ~a\n" id) (format #t " backend: ~a\n" (symbol->string backend)) (format #t " config: \"~a\"\n" config))) keystores)))) (define (knot-policy-config policies) (with-output-to-string (lambda () (for-each (lambda (policy-config) (let ((id (knot-policy-configuration-id policy-config)) (keystore (knot-policy-configuration-keystore policy-config)) (manual? (knot-policy-configuration-manual? policy-config)) (single-type-signing? (knot-policy-configuration-single-type-signing? policy-config)) (algorithm (knot-policy-configuration-algorithm policy-config)) (ksk-size (knot-policy-configuration-ksk-size policy-config)) (zsk-size (knot-policy-configuration-zsk-size policy-config)) (dnskey-ttl (knot-policy-configuration-dnskey-ttl policy-config)) (zsk-lifetime (knot-policy-configuration-zsk-lifetime policy-config)) (propagation-delay (knot-policy-configuration-propagation-delay policy-config)) (rrsig-lifetime (knot-policy-configuration-rrsig-lifetime policy-config)) (nsec3? (knot-policy-configuration-nsec3? policy-config)) (nsec3-iterations (knot-policy-configuration-nsec3-iterations policy-config)) (nsec3-salt-length (knot-policy-configuration-nsec3-salt-length policy-config)) (nsec3-salt-lifetime (knot-policy-configuration-nsec3-salt-lifetime policy-config))) (format #t " - id: ~a\n" id) (format #t " keystore: ~a\n" keystore) (format #t " manual: ~a\n" (if manual? "on" "off")) (format #t " single-type-signing: ~a\n" (if single-type-signing? "on" "off")) (format #t " algorithm: ~a\n" algorithm) (format #t " ksk-size: ~a\n" (number->string ksk-size)) (format #t " zsk-size: ~a\n" (number->string zsk-size)) (unless (eq? dnskey-ttl 'default) (format #t " dnskey-ttl: ~a\n" dnskey-ttl)) (format #t " zsk-lifetime: ~a\n" zsk-lifetime) (format #t " propagation-delay: ~a\n" propagation-delay) (format #t " rrsig-lifetime: ~a\n" rrsig-lifetime) (format #t " nsec3: ~a\n" (if nsec3? "on" "off")) (format #t " nsec3-iterations: ~a\n" (number->string nsec3-iterations)) (format #t " nsec3-salt-length: ~a\n" (number->string nsec3-salt-length)) (format #t " nsec3-salt-lifetime: ~a\n" nsec3-salt-lifetime))) policies)))) (define (knot-remote-config remotes) (with-output-to-string (lambda () (for-each (lambda (remote-config) (let ((id (knot-remote-configuration-id remote-config)) (address (knot-remote-configuration-address remote-config)) (via (knot-remote-configuration-via remote-config)) (key (knot-remote-configuration-key remote-config))) (format #t " - id: ~a\n" id) (unless (eq? address '()) (format #t " address: ~a\n" (format-string-list address))) (unless (eq? via '()) (format #t " via: ~a\n" (format-string-list via))) (if key (format #t " key: ~a\n" key)))) remotes)))) (define (serialize-zone-entries entries) (with-output-to-string (lambda () (for-each (lambda (entry) (let ((name (zone-entry-name entry)) (ttl (zone-entry-ttl entry)) (class (zone-entry-class entry)) (type (zone-entry-type entry)) (data (zone-entry-data entry))) (format #t "~a ~a ~a ~a ~a\n" name ttl class type data))) entries)))) (define (serialize-zone-file zone domain) (computed-file (string-append domain ".zone") #~(begin (call-with-output-file #$output (lambda (port) (format port "$ORIGIN ~a.\n" #$(zone-file-origin zone)) (format port "@ IN SOA ~a ~a (~a ~a ~a ~a ~a)\n" #$(zone-file-ns zone) #$(zone-file-mail zone) #$(zone-file-serial zone) #$(zone-file-refresh zone) #$(zone-file-retry zone) #$(zone-file-expiry zone) #$(zone-file-nx zone)) (format port "~a\n" #$(serialize-zone-entries (zone-file-entries zone)))))))) (define (knot-zone-config zone) (let ((content (knot-zone-configuration-zone zone))) #~(with-output-to-string (lambda () (let ((domain #$(knot-zone-configuration-domain zone)) (file #$(knot-zone-configuration-file zone)) (master (list #$@(knot-zone-configuration-master zone))) (ddns-master #$(knot-zone-configuration-ddns-master zone)) (notify (list #$@(knot-zone-configuration-notify zone))) (acl (list #$@(knot-zone-configuration-acl zone))) (semantic-checks? #$(knot-zone-configuration-semantic-checks? zone)) (zonefile-sync #$(knot-zone-configuration-zonefile-sync zone)) (zonefile-load '#$(knot-zone-configuration-zonefile-load zone)) (journal-content #$(knot-zone-configuration-journal-content zone)) (max-journal-usage #$(knot-zone-configuration-max-journal-usage zone)) (max-journal-depth #$(knot-zone-configuration-max-journal-depth zone)) (max-zone-size #$(knot-zone-configuration-max-zone-size zone)) (dnssec-policy #$(knot-zone-configuration-dnssec-policy zone)) (serial-policy '#$(knot-zone-configuration-serial-policy zone))) (format #t " - domain: ~a\n" domain) (if (eq? master '()) ;; This server is a master (if (equal? file "") (format #t " file: ~a\n" #$(serialize-zone-file content (knot-zone-configuration-domain zone))) (format #t " file: ~a\n" file)) ;; This server is a slave (has masters) (begin (format #t " master: ~a\n" #$(format-string-list (knot-zone-configuration-master zone))) (if ddns-master (format #t " ddns-master ~a\n" ddns-master)))) (unless (eq? notify '()) (format #t " notify: ~a\n" #$(format-string-list (knot-zone-configuration-notify zone)))) (unless (eq? acl '()) (format #t " acl: ~a\n" #$(format-string-list (knot-zone-configuration-acl zone)))) (format #t " semantic-checks: ~a\n" (if semantic-checks? "on" "off")) (if zonefile-sync (format #t " zonefile-sync: ~a\n" zonefile-sync)) (if zonefile-load (format #t " zonefile-load: ~a\n" (symbol->string zonefile-load))) (if journal-content (format #t " journal-content: ~a\n" (symbol->string journal-content))) (if max-journal-usage (format #t " max-journal-usage: ~a\n" max-journal-usage)) (if max-journal-depth (format #t " max-journal-depth: ~a\n" max-journal-depth)) (if max-zone-size (format #t " max-zone-size: ~a\n" max-zone-size)) (if dnssec-policy (begin (format #t " dnssec-signing: on\n") (format #t " dnssec-policy: ~a\n" dnssec-policy))) (format #t " serial-policy: ~a\n" (symbol->string serial-policy))))))) (define (knot-config-file config) (verify-knot-configuration config) (computed-file "knot.conf" #~(begin (call-with-output-file #$output (lambda (port) (for-each (lambda (inc) (format port "include: ~a\n" inc)) '#$(knot-configuration-includes config)) (format port "server:\n") (format port " rundir: ~a\n" #$(knot-configuration-run-directory config)) (format port " user: knot\n") (format port " listen: ~a@~a\n" #$(knot-configuration-listen-v4 config) #$(knot-configuration-listen-port config)) (format port " listen: ~a@~a\n" #$(knot-configuration-listen-v6 config) #$(knot-configuration-listen-port config)) (format port "\nkey:\n") (format port #$(knot-key-config (knot-configuration-keys config))) (format port "\nkeystore:\n") (format port #$(knot-keystore-config (knot-configuration-keystores config))) (format port "\nacl:\n") (format port #$(knot-acl-config (knot-configuration-acls config))) (format port "\nremote:\n") (format port #$(knot-remote-config (knot-configuration-remotes config))) (format port "\npolicy:\n") (format port #$(knot-policy-config (knot-configuration-policies config))) (unless #$(eq? (knot-configuration-zones config) '()) (format port "\nzone:\n") (format port "~a\n" (string-concatenate (list #$@(map knot-zone-config (knot-configuration-zones config))))))))))) (define %knot-accounts (list (user-group (name "knot") (system? #t)) (user-account (name "knot") (group "knot") (system? #t) (comment "knot dns server user") (home-directory "/var/empty") (shell (file-append shadow "/sbin/nologin"))))) (define (knot-activation config) (with-imported-modules (source-module-closure '((gnu build activation))) #~(begin (use-modules (gnu build activation)) (mkdir-p/perms #$(knot-configuration-run-directory config) (getpwnam "knot") #o755) (mkdir-p/perms "/var/lib/knot" (getpwnam "knot") #o755) (mkdir-p/perms "/var/lib/knot/keys" (getpwnam "knot") #o755) (mkdir-p/perms "/var/lib/knot/keys/keys" (getpwnam "knot") #o755)))) (define (knot-shepherd-service config) (let* ((config-file (knot-config-file config)) (knot (knot-configuration-knot config))) (list (shepherd-service (documentation "Run the Knot DNS daemon.") (provision '(knot dns)) (requirement '(networking)) (actions (list (shepherd-configuration-action config-file))) (start #~(make-forkexec-constructor (list (string-append #$knot "/sbin/knotd") "-c" #$config-file))) (stop #~(make-kill-destructor)))))) (define knot-service-type (service-type (name 'knot) (extensions (list (service-extension shepherd-root-service-type knot-shepherd-service) (service-extension activation-service-type knot-activation) (service-extension account-service-type (const %knot-accounts)))) (description "Run @uref{https://www.knot-dns.cz/, Knot}, an authoritative name server for the @acronym{DNS, Domain Name System}."))) ;;; ;;; Knot Resolver. ;;; (define-record-type* knot-resolver-configuration make-knot-resolver-configuration knot-resolver-configuration? (package knot-resolver-configuration-package (default knot-resolver)) (kresd-config-file knot-resolver-kresd-config-file (default %kresd.conf)) (garbage-collection-interval knot-resolver-garbage-collection-interval (default 1000))) (define %kresd.conf (plain-file "kresd.conf" "-- -*- mode: lua -*- trust_anchors.add_file('/var/cache/knot-resolver/root.keys') net = { '127.0.0.1', '::1' } user('knot-resolver', 'knot-resolver') modules = { 'hints > iterate', 'stats', 'predict' } cache.size = 100 * MB ")) (define %knot-resolver-accounts (list (user-group (name "knot-resolver") (system? #t)) (user-account (name "knot-resolver") (group "knot-resolver") (system? #t) (home-directory "/var/cache/knot-resolver") (shell (file-append shadow "/sbin/nologin"))))) (define (knot-resolver-activation config) #~(begin (use-modules (guix build utils)) (let ((rundir "/var/cache/knot-resolver") (owner (getpwnam "knot-resolver"))) (mkdir-p rundir) (chown rundir (passwd:uid owner) (passwd:gid owner))))) (define knot-resolver-shepherd-services (match-lambda (($ package kresd-config-file garbage-collection-interval) (list (shepherd-service (provision '(kresd)) (requirement '(networking)) (documentation "Run the Knot Resolver daemon.") (start #~(make-forkexec-constructor '(#$(file-append package "/sbin/kresd") "-c" #$kresd-config-file "-n" "/var/cache/knot-resolver"))) (stop #~(make-kill-destructor))) (shepherd-service (provision '(kres-cache-gc)) (requirement '(user-processes)) (documentation "Run the Knot Resolver Garbage Collector daemon.") (start #~(make-forkexec-constructor '(#$(file-append package "/sbin/kres-cache-gc") "-d" #$(number->string garbage-collection-interval) "-c" "/var/cache/knot-resolver") #:user "knot-resolver" #:group "knot-resolver")) (stop #~(make-kill-destructor))))))) (define knot-resolver-service-type (service-type (name 'knot-resolver) (extensions (list (service-extension shepherd-root-service-type knot-resolver-shepherd-services) (service-extension activation-service-type knot-resolver-activation) (service-extension account-service-type (const %knot-resolver-accounts)))) (default-value (knot-resolver-configuration)) (description "Run the Knot DNS Resolver."))) ;;; ;;; Dnsmasq. ;;; (define-record-type* dnsmasq-configuration make-dnsmasq-configuration dnsmasq-configuration? (package dnsmasq-configuration-package (default dnsmasq)) ;file-like (no-hosts? dnsmasq-configuration-no-hosts? (default #f)) ;boolean (port dnsmasq-configuration-port (default 53)) ;integer (local-service? dnsmasq-configuration-local-service? (default #t)) ;boolean (listen-addresses dnsmasq-configuration-listen-address (default '())) ;list of string (resolv-file dnsmasq-configuration-resolv-file (default "/etc/resolv.conf")) ;string (no-resolv? dnsmasq-configuration-no-resolv? (default #f)) ;boolean (forward-private-reverse-lookup? dnsmasq-configuration-forward-private-reverse-lookup? (default #t)) ;boolean (query-servers-in-order? dnsmasq-configuration-query-servers-in-order? (default #f)) ;boolean (servers dnsmasq-configuration-servers (default '())) ;list of string (servers-file dnsmasq-configuration-servers-file (default #f)) ;string|file-like (addresses dnsmasq-configuration-addresses (default '())) ;list of string (cache-size dnsmasq-configuration-cache-size (default 150)) ;integer (negative-cache? dnsmasq-configuration-negative-cache? (default #t)) ;boolean (cpe-id dnsmasq-configuration-cpe-id (default #f)) ;string (tftp-enable? dnsmasq-configuration-tftp-enable? (default #f)) ;boolean (tftp-no-fail? dnsmasq-configuration-tftp-no-fail? (default #f)) ;boolean (tftp-single-port? dnsmasq-configuration-tftp-single-port? (default #f)) ;boolean (tftp-secure? dnsmasq-tftp-secure? (default #f)) ;boolean (tftp-max dnsmasq-tftp-max (default #f)) ;integer (tftp-mtu dnsmasq-tftp-mtu (default #f)) ;integer (tftp-no-blocksize? dnsmasq-tftp-no-blocksize? (default #f)) ;boolean (tftp-lowercase? dnsmasq-tftp-lowercase? (default #f)) ;boolean (tftp-port-range dnsmasq-tftp-port-range (default #f)) ;string (tftp-root dnsmasq-tftp-root (default "/var/empty,lo")) ;string (tftp-unique-root dnsmasq-tftp-unique-root (default #f))) ;"" or "ip" or "mac" (define (dnsmasq-shepherd-service config) (match-record config (package no-hosts? port local-service? listen-addresses resolv-file no-resolv? forward-private-reverse-lookup? query-servers-in-order? servers addresses servers-file cache-size negative-cache? cpe-id tftp-enable? tftp-no-fail? tftp-single-port? tftp-secure? tftp-max tftp-mtu tftp-no-blocksize? tftp-lowercase? tftp-port-range tftp-root tftp-unique-root) (shepherd-service (provision '(dnsmasq)) (requirement '(networking)) (documentation "Run the dnsmasq DNS server.") (start #~(make-forkexec-constructor (list #$(file-append package "/sbin/dnsmasq") "--keep-in-foreground" "--pid-file=/run/dnsmasq.pid" #$@(if no-hosts? '("--no-hosts") '()) #$(format #f "--port=~a" port) #$@(if local-service? '("--local-service") '()) #$@(map (cut format #f "--listen-address=~a" <>) listen-addresses) #$(format #f "--resolv-file=~a" resolv-file) #$@(if no-resolv? '("--no-resolv") '()) #$@(if forward-private-reverse-lookup? '() '("--bogus-priv")) #$@(if query-servers-in-order? '("--strict-order") '()) #$@(if servers-file (list #~(string-append "--servers-file=" #$servers-file)) '()) #$@(map (cut format #f "--server=~a" <>) servers) #$@(map (cut format #f "--address=~a" <>) addresses) #$(format #f "--cache-size=~a" cache-size) #$@(if negative-cache? '() '("--no-negcache")) #$@(if cpe-id (list (format #f "--add-cpe-id=~a" cpe-id)) '()) #$@(if tftp-enable? '("--enable-tftp") '()) #$@(if tftp-no-fail? '("--tftp-no-fail") '()) #$@(if tftp-single-port? '("--tftp-single-port") '()) #$@(if tftp-secure? '("--tftp-secure") '()) #$@(if tftp-max (list (format #f "--tftp-max=~a" tftp-max)) '()) #$@(if tftp-mtu (list (format #f "--tftp-mtu=~a" tftp-mtu)) '()) #$@(if tftp-no-blocksize? '("--tftp-no-blocksize") '()) #$@(if tftp-lowercase? '("--tftp-lowercase") '()) #$@(if tftp-port-range (list (format #f "--tftp-port-range=~a" tftp-port-range)) '()) #$@(if tftp-root (list (format #f "--tftp-root=~a" tftp-root)) '()) #$@(if tftp-unique-root (list (if (> (length tftp-unique-root) 0) (format #f "--tftp-unique-root=~a" tftp-unique-root) (format #f "--tftp-unique-root"))) '())) #:pid-file "/run/dnsmasq.pid")) (stop #~(make-kill-destructor))))) (define (dnsmasq-activation config) #~(begin (use-modules (guix build utils)) ;; create directory to store dnsmasq lease file (mkdir-p "/var/lib/misc"))) (define dnsmasq-service-type (service-type (name 'dnsmasq) (extensions (list (service-extension shepherd-root-service-type (compose list dnsmasq-shepherd-service)) (service-extension activation-service-type dnsmasq-activation))) (default-value (dnsmasq-configuration)) (description "Run the dnsmasq DNS server.")))