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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
;;; Copyright © 2016 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 web)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:use-module (gnu packages admin)
#:use-module (gnu packages web)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (ice-9 match)
#:export (nginx-configuration
nginx-configuration?
nginx-vhost-configuration
nginx-vhost-configuration?
nginx-service
nginx-service-type))
;;; Commentary:
;;;
;;; Web services.
;;;
;;; Code:
(define-record-type* <nginx-vhost-configuration>
nginx-vhost-configuration make-nginx-vhost-configuration
nginx-vhost-configuration?
(http-port nginx-vhost-configuration-http-port
(default 80))
(https-port nginx-vhost-configuration-https-port
(default 443))
(server-name nginx-vhost-configuration-server-name
(default (list 'default)))
(root nginx-vhost-configuration-root
(default "/srv/http"))
(index nginx-vhost-configuration-index
(default (list "index.html")))
(ssl-certificate nginx-vhost-configuration-ssl-certificate
(default "/etc/nginx/cert.pem"))
(ssl-certificate-key nginx-vhost-configuration-ssl-certificate-key
(default "/etc/nginx/key.pem"))
(server-tokens? nginx-vhost-configuration-server-tokens?
(default #f)))
(define-record-type* <nginx-configuration>
nginx-configuration make-nginx-configuration
nginx-configuration?
(nginx nginx-configuration-nginx) ;<package>
(log-directory nginx-configuration-log-directory) ;string
(run-directory nginx-configuration-run-directory) ;string
(file nginx-configuration-file)) ;string | file-like
(define (config-domain-strings names)
"Return a string denoting the nginx config representation of NAMES, a list
of domain names."
(string-join
(map (match-lambda
('default "_")
((? string? str) str))
names)))
(define (config-index-strings names)
"Return a string denoting the nginx config representation of NAMES, a list
of index files."
(string-join
(map (match-lambda
((? string? str) str))
names)))
(define (default-nginx-vhost-config vhost)
(string-append
" server {\n"
(if (nginx-vhost-configuration-http-port vhost)
(string-append " listen "
(number->string (nginx-vhost-configuration-http-port vhost))
";\n")
"")
(if (nginx-vhost-configuration-https-port vhost)
(string-append " listen "
(number->string (nginx-vhost-configuration-https-port vhost))
" ssl;\n")
"")
" server_name " (config-domain-strings
(nginx-vhost-configuration-server-name vhost))
";\n"
(if (nginx-vhost-configuration-ssl-certificate vhost)
(string-append " ssl_certificate "
(nginx-vhost-configuration-ssl-certificate vhost) ";\n")
"")
(if (nginx-vhost-configuration-ssl-certificate-key vhost)
(string-append " ssl_certificate_key "
(nginx-vhost-configuration-ssl-certificate-key vhost) ";\n")
"")
" root " (nginx-vhost-configuration-root vhost) ";\n"
" index " (config-index-strings (nginx-vhost-configuration-index vhost)) ";\n"
" server_tokens " (if (nginx-vhost-configuration-server-tokens? vhost)
"on" "off") ";\n"
" }\n"))
(define (default-nginx-config log-directory run-directory vhost-list)
(plain-file "nginx.conf"
(string-append
"user nginx nginx;\n"
"pid " run-directory "/pid;\n"
"error_log " log-directory "/error.log info;\n"
"http {\n"
" client_body_temp_path " run-directory "/client_body_temp;\n"
" proxy_temp_path " run-directory "/proxy_temp;\n"
" fastcgi_temp_path " run-directory "/fastcgi_temp;\n"
" uwsgi_temp_path " run-directory "/uwsgi_temp;\n"
" scgi_temp_path " run-directory "/scgi_temp;\n"
" access_log " log-directory "/access.log;\n"
(let ((http (map default-nginx-vhost-config vhost-list)))
(do ((http http (cdr http))
(block "" (string-append (car http) "\n" block )))
((null? http) block)))
"}\n"
"events {}\n")))
(define %nginx-accounts
(list (user-group (name "nginx") (system? #t))
(user-account
(name "nginx")
(group "nginx")
(system? #t)
(comment "nginx server user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
(define nginx-activation
(match-lambda
(($ <nginx-configuration> nginx log-directory run-directory config-file)
#~(begin
(use-modules (guix build utils))
(format #t "creating nginx log directory '~a'~%" #$log-directory)
(mkdir-p #$log-directory)
(format #t "creating nginx run directory '~a'~%" #$run-directory)
(mkdir-p #$run-directory)
(format #t "creating nginx temp directories '~a/{client_body,proxy,fastcgi,uwsgi,scgi}_temp'~%" #$run-directory)
(mkdir-p (string-append #$run-directory "/client_body_temp"))
(mkdir-p (string-append #$run-directory "/proxy_temp"))
(mkdir-p (string-append #$run-directory "/fastcgi_temp"))
(mkdir-p (string-append #$run-directory "/uwsgi_temp"))
(mkdir-p (string-append #$run-directory "/scgi_temp"))
;; Check configuration file syntax.
(system* (string-append #$nginx "/sbin/nginx")
"-c" #$config-file "-t")))))
(define nginx-shepherd-service
(match-lambda
(($ <nginx-configuration> nginx log-directory run-directory config-file)
(let* ((nginx-binary (file-append nginx "/sbin/nginx"))
(nginx-action
(lambda args
#~(lambda _
(zero?
(system* #$nginx-binary "-c" #$config-file #$@args))))))
;; TODO: Add 'reload' action.
(list (shepherd-service
(provision '(nginx))
(documentation "Run the nginx daemon.")
(requirement '(user-processes loopback))
(start (nginx-action "-p" run-directory))
(stop (nginx-action "-s" "stop"))))))))
(define nginx-service-type
(service-type (name 'nginx)
(extensions
(list (service-extension shepherd-root-service-type
nginx-shepherd-service)
(service-extension activation-service-type
nginx-activation)
(service-extension account-service-type
(const %nginx-accounts))))))
(define* (nginx-service #:key (nginx nginx)
(log-directory "/var/log/nginx")
(run-directory "/var/run/nginx")
(vhost-list (list (nginx-vhost-configuration)))
(config-file
(default-nginx-config log-directory run-directory vhost-list)))
"Return a service that runs NGINX, the nginx web server.
The nginx daemon loads its runtime configuration from CONFIG-FILE, stores log
files in LOG-DIRECTORY, and stores temporary runtime files in RUN-DIRECTORY."
(service nginx-service-type
(nginx-configuration
(nginx nginx)
(log-directory log-directory)
(run-directory run-directory)
(file config-file))))
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