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-rw-r--r--gnu/services/ssh.scm131
1 files changed, 131 insertions, 0 deletions
diff --git a/gnu/services/ssh.scm b/gnu/services/ssh.scm
index 462988cc80..084f8fa4ea 100644
--- a/gnu/services/ssh.scm
+++ b/gnu/services/ssh.scm
@@ -1,6 +1,7 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 David Craven <david@craven.ch>
+;;; Copyright © 2016 Julien Lepiller <julien@lepiller.eu>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -19,17 +20,25 @@
(define-module (gnu services ssh)
#:use-module (gnu packages ssh)
+ #:use-module (gnu packages admin)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system pam)
+ #:use-module (gnu system shadow)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (srfi srfi-26)
+ #:use-module (ice-9 match)
#:export (lsh-configuration
lsh-configuration?
lsh-service
lsh-service-type
+ openssh-configuration
+ openssh-configuration?
+ openssh-service-type
+ openssh-service
+
dropbear-configuration
dropbear-configuration?
dropbear-service-type
@@ -246,6 +255,128 @@ The other options should be self-descriptive."
;;;
+;;; OpenSSH.
+;;;
+
+(define-record-type* <openssh-configuration>
+ openssh-configuration make-openssh-configuration
+ openssh-configuration?
+ (pid-file openssh-configuration-pid-file) ;string
+ (port-number openssh-configuration-port-number) ;integer
+ (permit-root-login openssh-configuration-permit-root-login) ;Boolean | 'without-password
+ (allow-empty-passwords? openssh-configuration-allow-empty-passwords?) ;Boolean
+ (password-authentication? openssh-configuration-password-authentication?) ;Boolean
+ (pubkey-authentication? openssh-configuration-pubkey-authentication?) ;Boolean
+ (rsa-authentication? openssh-configuration-rsa-authentication?) ;Boolean
+ (x11-forwarding? openssh-configuration-x11-forwarding?) ;Boolean
+ (protocol-number openssh-configuration-protocol-number)) ;integer
+
+(define %openssh-accounts
+ (list (user-group (name "sshd") (system? #t))
+ (user-account
+ (name "sshd")
+ (group "sshd")
+ (system? #t)
+ (comment "sshd privilege separation user")
+ (home-directory "/var/run/sshd")
+ (shell #~(string-append #$shadow "/sbin/nologin")))))
+
+(define (openssh-activation config)
+ "Return the activation GEXP for CONFIG."
+ #~(begin
+ (mkdir-p "/etc/ssh")
+ (mkdir-p (dirname #$(openssh-configuration-pid-file config)))
+
+ ;; Generate missing host keys.
+ (system* (string-append #$openssh "/bin/ssh-keygen") "-A")))
+
+(define (openssh-config-file config)
+ "Return the sshd configuration file corresponding to CONFIG."
+ (computed-file
+ "sshd_config"
+ #~(call-with-output-file #$output
+ (lambda (port)
+ (display "# Generated by 'openssh-service'.\n" port)
+ (format port "Protocol ~a\n"
+ #$(if (eq? (openssh-configuration-protocol-number config) 1)
+ "1" "2"))
+ (format port "Port ~a\n"
+ #$(number->string (openssh-configuration-port-number config)))
+ (format port "PermitRootLogin ~a\n"
+ #$(match (openssh-configuration-permit-root-login config)
+ (#t "yes")
+ (#f "no")
+ ('without-password "without-password")))
+ (format port "PermitEmptyPasswords ~a\n"
+ #$(if (openssh-configuration-allow-empty-passwords? config)
+ "yes" "no"))
+ (format port "PasswordAuthentication ~a\n"
+ #$(if (openssh-configuration-password-authentication? config)
+ "yes" "no"))
+ (format port "PubkeyAuthentication ~a\n"
+ #$(if (openssh-configuration-pubkey-authentication? config)
+ "yes" "no"))
+ (format port "RSAAuthentication ~a\n"
+ #$(if (openssh-configuration-rsa-authentication? config)
+ "yes" "no"))
+ (format port "X11Forwarding ~a\n"
+ #$(if (openssh-configuration-x11-forwarding? config)
+ "yes" "no"))
+ (format port "PidFile ~a\n"
+ #$(openssh-configuration-pid-file config))
+ #t))))
+
+(define (openssh-shepherd-service config)
+ "Return a <shepherd-service> for openssh with CONFIG."
+
+ (define pid-file
+ (openssh-configuration-pid-file config))
+
+ (define openssh-command
+ #~(list (string-append #$openssh "/sbin/sshd")
+ "-D" "-f" #$(openssh-config-file config)))
+
+ (list (shepherd-service
+ (documentation "OpenSSH server.")
+ (requirement '(networking syslogd))
+ (provision '(ssh-daemon))
+ (start #~(make-forkexec-constructor #$openssh-command
+ #:pid-file #$pid-file))
+ (stop #~(make-kill-destructor)))))
+
+(define openssh-service-type
+ (service-type (name 'openssh)
+ (extensions
+ (list (service-extension shepherd-root-service-type
+ openssh-shepherd-service)
+ (service-extension activation-service-type
+ openssh-activation)
+ (service-extension account-service-type
+ (const %openssh-accounts))))))
+
+(define* (openssh-service #:key
+ (pid-file "/var/run/sshd.pid")
+ (port-number 22)
+ (permit-root-login 'without-password)
+ (allow-empty-passwords? #f)
+ (password-authentication? #t)
+ (pubkey-authentication? #t)
+ (rsa-authentication? #t)
+ (x11-forwarding? #f)
+ (protocol-number 2))
+ (service openssh-service-type (openssh-configuration
+ (pid-file pid-file)
+ (port-number port-number)
+ (permit-root-login permit-root-login)
+ (allow-empty-passwords? allow-empty-passwords?)
+ (password-authentication? password-authentication?)
+ (pubkey-authentication? pubkey-authentication?)
+ (rsa-authentication? rsa-authentication?)
+ (x11-forwarding? x11-forwarding?)
+ (protocol-number protocol-number))))
+
+
+;;;
;;; Dropbear.
;;;