1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 ng0 <ng0@n0.is>
;;; Copyright © 2016 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2019 Julien Lepiller <julien@lepiller.eu>
;;;
;;; 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 <http://www.gnu.org/licenses/>.
(define-module (gnu services certbot)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services shepherd)
#:use-module (gnu services mcron)
#:use-module (gnu services web)
#:use-module (gnu system shadow)
#:use-module (gnu packages tls)
#:use-module (guix i18n)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:export (certbot-service-type
certbot-configuration
certbot-configuration?
certificate-configuration))
;;; Commentary:
;;;
;;; Automatically obtaining TLS certificates from Let's Encrypt.
;;;
;;; Code:
(define-record-type* <certificate-configuration>
certificate-configuration make-certificate-configuration
certificate-configuration?
(name certificate-configuration-name
(default #f))
(domains certificate-configuration-domains
(default '()))
(challenge certificate-configuration-challenge
(default #f))
(authentication-hook certificate-authentication-hook
(default #f))
(cleanup-hook certificate-cleanup-hook
(default #f))
(deploy-hook certificate-configuration-deploy-hook
(default #f)))
(define-record-type* <certbot-configuration>
certbot-configuration make-certbot-configuration
certbot-configuration?
(package certbot-configuration-package
(default certbot))
(webroot certbot-configuration-webroot
(default "/var/www"))
(certificates certbot-configuration-certificates
(default '()))
(email certbot-configuration-email)
(rsa-key-size certbot-configuration-rsa-key-size
(default #f))
(default-location certbot-configuration-default-location
(default
(nginx-location-configuration
(uri "/")
(body
(list "return 301 https://$host$request_uri;"))))))
(define certbot-command
(match-lambda
(($ <certbot-configuration> package webroot certificates email
rsa-key-size default-location)
(let* ((certbot (file-append package "/bin/certbot"))
(rsa-key-size (and rsa-key-size (number->string rsa-key-size)))
(commands
(map
(match-lambda
(($ <certificate-configuration> custom-name domains challenge
authentication-hook cleanup-hook
deploy-hook)
(let ((name (or custom-name (car domains))))
(if challenge
(append
(list name certbot "certonly" "-n" "--agree-tos"
"-m" email
"--manual"
(string-append "--preferred-challenges=" challenge)
"--cert-name" name
"-d" (string-join domains ","))
(if rsa-key-size `("--rsa-key-size" ,rsa-key-size) '())
(if authentication-hook
`("--manual-auth-hook" ,authentication-hook)
'())
(if cleanup-hook `("--manual-cleanup-hook" ,cleanup-hook) '())
(if deploy-hook `("--deploy-hook" ,deploy-hook) '()))
(append
(list name certbot "certonly" "-n" "--agree-tos"
"-m" email
"--webroot" "-w" webroot
"--cert-name" name
"-d" (string-join domains ","))
(if rsa-key-size `("--rsa-key-size" ,rsa-key-size) '())
(if deploy-hook `("--deploy-hook" ,deploy-hook) '()))))))
certificates)))
(program-file
"certbot-command"
#~(begin
(use-modules (ice-9 match))
(let ((code 0))
(for-each
(match-lambda
((name . command)
(begin
(format #t "Acquiring or renewing certificate: ~a~%" name)
(set! code (or (apply system* command) code)))))
'#$commands) code)))))))
(define (certbot-renewal-jobs config)
(list
;; Attempt to renew the certificates twice per day, at a random minute
;; within the hour. See https://certbot.eff.org/all-instructions/.
#~(job '(next-minute-from (next-hour '(0 12)) (list (random 60)))
#$(certbot-command config))))
(define (certbot-activation config)
(let* ((certbot-directory "/var/lib/certbot")
(script (in-vicinity certbot-directory "renew-certificates"))
(message (format #f (G_ "~a may need to be run~%") script)))
(match config
(($ <certbot-configuration> package webroot certificates email
rsa-key-size default-location)
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils))
(mkdir-p #$webroot)
(mkdir-p #$certbot-directory)
(copy-file #$(certbot-command config) #$script)
(display #$message)))))))
(define certbot-nginx-server-configurations
(match-lambda
(($ <certbot-configuration> package webroot certificates email
rsa-key-size default-location)
(list
(nginx-server-configuration
(listen '("80" "[::]:80"))
(ssl-certificate #f)
(ssl-certificate-key #f)
(server-name
(apply append (map certificate-configuration-domains certificates)))
(locations
(filter identity
(list
(nginx-location-configuration
(uri "/.well-known")
(body (list (list "root " webroot ";"))))
default-location))))))))
(define certbot-service-type
(service-type (name 'certbot)
(extensions
(list (service-extension nginx-service-type
certbot-nginx-server-configurations)
(service-extension activation-service-type
certbot-activation)
(service-extension mcron-service-type
certbot-renewal-jobs)))
(compose concatenate)
(extend (lambda (config additional-certificates)
(certbot-configuration
(inherit config)
(certificates
(append
(certbot-configuration-certificates config)
additional-certificates)))))
(description
"Automatically renew @url{https://letsencrypt.org, Let's
Encrypt} HTTPS certificates by adjusting the nginx web server configuration
and periodically invoking @command{certbot}.")))
|
