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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
;;; Copyright © 2016 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2017 Oleg Pykhalov <go.wigust@gmail.com>
;;;
;;; 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 version-control)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services shepherd)
#:use-module (gnu services web)
#:use-module (gnu system shadow)
#:use-module (gnu packages version-control)
#:use-module (gnu packages admin)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (git-daemon-service
git-daemon-service-type
git-daemon-configuration
git-daemon-configuration?
<cgit-configuration-file>
cgit-configuration-file
cgit-configuration-file?
cgit-configuration-file-css
cgit-configuration-file-logo
cgit-configuration-file-robots
cgit-configuration-file-virtual-root
cgit-configuration-file-repository-directory
<cgit-configuration>
cgit-configuration
cgit-configuration?
cgit-configuration-config-file
cgit-configuration-package
%cgit-configuration-nginx
cgit-configuration-nginx-config
cgit-service-type
git-http-configuration
git-http-configuration?
git-http-nginx-location-configuration))
;;; Commentary:
;;;
;;; Version Control related services.
;;;
;;; Code:
;;;
;;; Git daemon.
;;;
(define-record-type* <git-daemon-configuration>
git-daemon-configuration
make-git-daemon-configuration
git-daemon-configuration?
(package git-daemon-configuration-package ;package
(default git))
(export-all? git-daemon-configuration-export-all ;boolean
(default #f))
(base-path git-daemon-configuration-base-path ;string | #f
(default "/srv/git"))
(user-path git-daemon-configuration-user-path ;string | #f
(default #f))
(listen git-daemon-configuration-listen ;list of string
(default '()))
(port git-daemon-configuration-port ;number | #f
(default #f))
(whitelist git-daemon-configuration-whitelist ;list of string
(default '()))
(extra-options git-daemon-configuration-extra-options ;list of string
(default '())))
(define git-daemon-shepherd-service
(match-lambda
(($ <git-daemon-configuration>
package export-all? base-path user-path
listen port whitelist extra-options)
(let* ((git (file-append package "/bin/git"))
(command `(,git
"daemon" "--syslog" "--reuseaddr"
,@(if export-all?
'("--export-all")
'())
,@(if base-path
`(,(string-append "--base-path=" base-path))
'())
,@(if user-path
`(,(string-append "--user-path=" user-path))
'())
,@(map (cut string-append "--listen=" <>) listen)
,@(if port
`(,(string-append
"--port=" (number->string port)))
'())
,@extra-options
,@whitelist)))
(list (shepherd-service
(documentation "Run the git-daemon.")
(requirement '(networking))
(provision '(git-daemon))
(start #~(make-forkexec-constructor '#$command
#:user "git-daemon"
#:group "git-daemon"))
(stop #~(make-kill-destructor))))))))
(define %git-daemon-accounts
;; User account and group for git-daemon.
(list (user-group
(name "git-daemon")
(system? #t))
(user-account
(name "git-daemon")
(system? #t)
(group "git-daemon")
(comment "Git daemon user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
(define (git-daemon-activation config)
"Return the activation gexp for git-daemon using CONFIG."
(let ((base-path (git-daemon-configuration-base-path config)))
#~(begin
(use-modules (guix build utils))
;; Create the 'base-path' directory when it's not '#f'.
(and=> #$base-path mkdir-p))))
(define git-daemon-service-type
(service-type
(name 'git-daemon)
(extensions
(list (service-extension shepherd-root-service-type
git-daemon-shepherd-service)
(service-extension account-service-type
(const %git-daemon-accounts))
(service-extension activation-service-type
git-daemon-activation)))
(description
"Expose Git respositories over the insecure @code{git://} TCP-based
protocol.")
(default-value (git-daemon-configuration))))
(define* (git-daemon-service #:key (config (git-daemon-configuration)))
"Return a service that runs @command{git daemon}, a simple TCP server to
expose repositories over the Git protocol for annoymous access.
The optional @var{config} argument should be a
@code{<git-daemon-configuration>} object, by default it allows read-only
access to exported repositories under @file{/srv/git}."
(service git-daemon-service-type config))
;;;
;;; Cgit
;;;
(define-record-type* <cgit-configuration-file>
cgit-configuration-file
make-cgit-configuration-file
cgit-configuration-file?
(css cgit-configuration-file-css ; string
(default "/share/cgit/cgit.css"))
(logo cgit-configuration-file-logo ; string
(default "/share/cgit/cgit.png"))
(robots cgit-configuration-file-robots ; list
(default '("noindex" "nofollow")))
(virtual-root cgit-configuration-file-virtual-root ; string
(default "/"))
(repository-directory cgit-configuration-file-repository-directory ; string
(default "/srv/git")))
(define (cgit-configuration-robots-string robots)
(string-join robots ", "))
(define-gexp-compiler (cgit-configuration-file-compiler
(file <cgit-configuration-file>) system target)
(match file
(($ <cgit-configuration-file> css logo
robots virtual-root repository-directory)
(apply text-file* "cgitrc"
(letrec-syntax ((option (syntax-rules ()
((_ key value)
(if value
`(,key "=" ,value "\n")
'()))))
(key/value (syntax-rules ()
((_ (key value) rest ...)
(append (option key value)
(key/value rest ...)))
((_)
'()))))
(key/value ("css" css)
("logo" logo)
("robots" (cgit-configuration-robots-string robots))
("virtual-root" virtual-root)
("scan-path" repository-directory)))))))
(define %cgit-configuration-nginx
(list
(nginx-server-configuration
(root cgit)
(locations
(list
(nginx-location-configuration
(uri "@cgit")
(body '("fastcgi_param SCRIPT_FILENAME $document_root/lib/cgit/cgit.cgi;"
"fastcgi_param PATH_INFO $uri;"
"fastcgi_param QUERY_STRING $args;"
"fastcgi_param HTTP_HOST $server_name;"
"fastcgi_pass 127.0.0.1:9000;")))))
(try-files (list "$uri" "@cgit"))
(https-port #f)
(ssl-certificate #f)
(ssl-certificate-key #f))))
(define-record-type* <cgit-configuration>
cgit-configuration make-cgit-configuration
cgit-configuration?
(config-file cgit-configuration-config-file
(default (cgit-configuration-file)))
(package cgit-configuration-package
(default cgit))
(nginx cgit-configuration-nginx
(default %cgit-configuration-nginx)))
(define (cgit-activation config)
;; Cgit compiled with default configuration path
#~(begin
(use-modules (guix build utils))
(mkdir-p "/var/cache/cgit")
(copy-file #$(cgit-configuration-config-file config) "/etc/cgitrc")))
(define (cgit-configuration-nginx-config config)
(cgit-configuration-nginx config))
(define cgit-service-type
(service-type
(name 'cgit)
(extensions
(list (service-extension activation-service-type
cgit-activation)
(service-extension nginx-service-type
cgit-configuration-nginx-config)))
(default-value (cgit-configuration))
(description
"Run the Cgit web interface, which allows users to browse Git
repositories.")))
;;;
;;; HTTP access. Add the result of calling
;;; git-http-nginx-location-configuration to an nginx-server-configuration's
;;; "locations" field.
;;;
(define-record-type* <git-http-configuration>
git-http-configuration
make-git-http-configuration
git-http-configuration?
(package git-http-configuration-package ;package
(default git))
(git-root git-http-configuration-git-root ;string
(default "/srv/git"))
(export-all? git-http-configuration-export-all? ;boolean
(default #f))
(uri-path git-http-configuration-uri-path ;string
(default "/git/"))
(fcgiwrap-socket git-http-configuration-fcgiwrap-socket ;string
(default "127.0.0.1:9000")))
(define* (git-http-nginx-location-configuration #:optional
(config
(git-http-configuration)))
(match config
(($ <git-http-configuration> package git-root export-all?
uri-path fcgiwrap-socket)
(nginx-location-configuration
(uri (string-append "~ /" (string-trim-both uri-path #\/) "(/.*)"))
(body
(list
(list "fastcgi_pass " fcgiwrap-socket ";")
(list "fastcgi_param SCRIPT_FILENAME "
package "/libexec/git-core/git-http-backend"
";")
"fastcgi_param QUERY_STRING $query_string;"
"fastcgi_param REQUEST_METHOD $request_method;"
"fastcgi_param CONTENT_TYPE $content_type;"
"fastcgi_param CONTENT_LENGTH $content_length;"
(if export-all?
"fastcgi_param GIT_HTTP_EXPORT_ALL \"\";"
"")
(list "fastcgi_param GIT_PROJECT_ROOT " git-root ";")
"fastcgi_param PATH_INFO $1;"))))))
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