134 lines
5.2 KiB
Scheme
134 lines
5.2 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
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;;; Copyright © 2016 Sou Bunnbu <iyzsong@member.fsf.org>
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;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services certbot)
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#:use-module (gnu services)
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#:use-module (gnu services base)
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#:use-module (gnu services shepherd)
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#:use-module (gnu services mcron)
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#:use-module (gnu services web)
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#:use-module (gnu system shadow)
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#:use-module (gnu packages tls)
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#:use-module (guix records)
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#:use-module (guix gexp)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:export (certbot-service-type
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certbot-configuration
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certbot-configuration?))
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;;; Commentary:
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;;;
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;;; Automatically obtaining TLS certificates from Let's Encrypt.
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;;;
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;;; Code:
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(define-record-type* <certbot-configuration>
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certbot-configuration make-certbot-configuration
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certbot-configuration?
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(package certbot-configuration-package
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(default certbot))
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(webroot certbot-configuration-webroot
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(default "/var/www"))
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(hosts certbot-configuration-hosts
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(default '()))
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(default-location certbot-configuration-default-location
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(default
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(nginx-location-configuration
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(uri "/")
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(body
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(list "return 301 https://$host$request_uri;"))))))
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(define certbot-renewal-jobs
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(match-lambda
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(($ <certbot-configuration> package webroot hosts default-location)
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(match hosts
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;; Avoid pinging certbot if we have no hosts.
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(() '())
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(_
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(list
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;; Attempt to renew the certificates twice a week.
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#~(job (lambda (now)
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(next-day-from (next-hour-from now '(3))
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'(2 5)))
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(string-append #$package "/bin/certbot renew"
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(string-concatenate
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(map (lambda (host)
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(string-append " -d " host))
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'#$hosts))))))))))
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(define certbot-activation
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(match-lambda
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(($ <certbot-configuration> package webroot hosts default-location)
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(with-imported-modules '((guix build utils))
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#~(begin
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(use-modules (guix build utils))
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(mkdir-p #$webroot)
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(for-each
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(lambda (host)
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(unless (file-exists? (in-vicinity "/etc/letsencrypt/live" host))
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(unless (zero? (system*
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(string-append #$certbot "/bin/certbot")
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"certonly" "--webroot" "-w" #$webroot
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"-d" host))
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(error "failed to acquire cert for host" host))))
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'#$hosts))))))
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(define certbot-nginx-server-configurations
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(match-lambda
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(($ <certbot-configuration> package webroot hosts default-location)
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(map
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(lambda (host)
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(nginx-server-configuration
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(listen '("80"))
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(ssl-certificate #f)
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(ssl-certificate-key #f)
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(server-name (list host))
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(locations
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(filter identity
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(list
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(nginx-location-configuration
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(uri "/.well-known")
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(body (list (list "root " webroot ";"))))
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default-location)))))
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hosts))))
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(define certbot-service-type
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(service-type (name 'certbot)
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(extensions
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(list (service-extension nginx-service-type
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certbot-nginx-server-configurations)
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(service-extension activation-service-type
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certbot-activation)
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(service-extension mcron-service-type
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certbot-renewal-jobs)))
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(compose concatenate)
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(extend (lambda (config additional-hosts)
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(certbot-configuration
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(inherit config)
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(hosts (append (certbot-configuration-hosts config)
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additional-hosts)))))
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(default-value (certbot-configuration))
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(description
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"Automatically renew @url{https://letsencrypt.org, Let's
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Encrypt} HTTPS certificates by adjusting the nginx web server configuration
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and periodically invoking @command{certbot}.")))
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