tiedote.md/.guix/modules/tiedote-md-service.scm

143 lines
6.3 KiB
Scheme

(define-module (tiedote-md-service)
#:use-module (gnu services configuration)
#:use-module (gnu services shepherd)
#:use-module (gnu services base)
#:use-module (gnu system shadow)
#:use-module (gnu services)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (tiedote-md-package)
#:use-module (gnu packages bash)
#:export (tiedote.md-configuration
tiedote.md-service-type))
(define-maybe string)
(define-configuration/no-serialization tiedote.md-configuration
(email-address
(string)
"Email address to send messages as. Mail to this address must be routed to
the tiedote.md user on this system.")
(sender-name
(string)
"Name to send messages as.")
(remote-url
(string)
"URL of the Git repository to mirror.")
(remote-branch
maybe-string
"Git branch to read messages from.")
(sendmail-path
(string "/run/privileged/bin/sendmail")
"Path to a sendmail compatible mailing executable.")
(webhook-port
(integer 3000)
"Port to listen on for webhook notifications.")
(socket-path
(string "/run/tiedote.md/acid.sock")
"Socket on which tiedote.md should listen on.")
(state-directory
(string "/var/lib/tiedote.md")
"Directory for persistent storage."))
(define (tiedote.md-accounts config)
(match-record config <tiedote.md-configuration>
(state-directory)
(list (user-group
(name "tiedote.md")
(system? #t))
(user-account
(name "tiedote.md")
(system? #t)
(group "tiedote.md")
(comment "Tiedote.md service user")
(home-directory state-directory)
(shell (file-append bash-minimal "/bin/bash"))))))
(define (make-tiedote.md-server-script config)
(match-record config <tiedote.md-configuration>
(socket-path email-address sender-name webhook-port sendmail-path
remote-branch remote-url state-directory)
(program-file "tiedote.md-server"
#~(begin
; use utf8 before starting tiedote.md to be able to pass utf characters as arguments
(setlocale LC_ALL "C.UTF-8")
; use utf8 after exec so that ghc text library doesn't crash from IO
(setenv "LANG" "C.UTF-8")
(let ((tiedote.md #$(file-append tiedote-md "/bin/tiedote.md"))
(repo-path (string-append #$state-directory "/git-repo")))
(apply execl
`(,tiedote.md
,tiedote.md
"--address" #$email-address
"--sender-name" #$sender-name
"--sendmail" #$sendmail-path
"--socket" #$socket-path
"server"
"--repository" ,repo-path
"--port" #$(number->string webhook-port)
"--remote-url" #$remote-url
,@(if #$(maybe-value-set? remote-branch)
(list "--remote-branch" #$remote-branch)
'()))))))))
(define (tiedote.md-shepherd-service config)
(match-record config <tiedote.md-configuration>
(state-directory socket-path)
(list (shepherd-service
(documentation "A simple mass email system")
(requirement '(networking user-processes))
(provision '(tiedote.md))
(start #~(let* ((user (getpw "tiedote.md"))
(uid (passwd:uid user))
(gid (passwd:gid user))
(socket-directory (dirname #$socket-path)))
(begin
(mkdir-p socket-directory)
(chown socket-directory uid gid)
(make-forkexec-constructor (list #$(make-tiedote.md-server-script config))
#:user "tiedote.md"
#:group "tiedote.md"
#:environment-variables
(cons* "GIT_SSL_CAINFO=/etc/ssl/certs/ca-certificates.crt"
(default-environment-variables))
#:directory #$state-directory))))
(stop #~(make-kill-destructor))))))
(define (tiedote.md-activation config)
(match-record config <tiedote.md-configuration>
(state-directory email-address sender-name sendmail-path socket-path)
(let* ((tiedote.md (file-append tiedote-md "/bin/tiedote.md"))
(receive-exec (list tiedote.md ; file to exec
tiedote.md ; arg $0
"--address" email-address
"--sender-name" sender-name
"--sendmail" sendmail-path
"--socket" socket-path
"receive"))
(receive-script (program-file "tiedote.md-receive"
#~(begin
(setlocale LC_ALL "C.UTF-8")
(setenv "LANG" "C.UTF-8")
(apply execl '#$receive-exec))))
(forward-file (mixed-text-file "dot-forward" "|" receive-script)))
#~(let* ((.forward (string-append #$state-directory "/.forward"))
(user (getpw "tiedote.md"))
(uid (passwd:uid user))
(gid (passwd:gid user)))
(if (file-exists? .forward)
(delete-file .forward))
; smtpd does not follow symbolic links and requires .forward files to
; be owned by the recipient
(copy-file #$forward-file .forward)
(chown .forward uid gid)))))
(define tiedote.md-service-type
(service-type
(name 'tiedote.md)
(extensions
(list (service-extension account-service-type tiedote.md-accounts)
(service-extension activation-service-type tiedote.md-activation)
(service-extension shepherd-root-service-type tiedote.md-shepherd-service)))
(description "A simple mass email system")))