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01/01: services: Add 'openssh-service'.
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From: |
Ludovic Courtès |
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Subject: |
01/01: services: Add 'openssh-service'. |
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Date: |
Thu, 29 Sep 2016 21:12:45 +0000 (UTC) |
civodul pushed a commit to branch master
in repository guix.
commit 86d8f6d3efb8300a3354735cbf06be6c01e23243
Author: Julien Lepiller <address@hidden>
Date: Fri Aug 5 15:20:15 2016 +0200
services: Add 'openssh-service'.
* gnu/packages/ssh.scm (openssh)[arguments]: Set sysconfdir to /etc/ssh.
* gnu/services/ssh.scm (<openssh-configuration>): New record type.
(%openssh-accounts): New variable.
(openssh-activation, openssh-config-file, openssh-shepherd-service)
(openssh-service): New procedures.
(openssh-service-type): New variable.
* doc/guix.texi (Networking Services): Document 'openssh-services'.
Co-authored-by: Ludovic Courtès <address@hidden>
---
doc/guix.texi | 34 +++++++++++++
gnu/packages/ssh.scm | 2 +-
gnu/services/ssh.scm | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 166 insertions(+), 1 deletion(-)
diff --git a/doc/guix.texi b/doc/guix.texi
index 239428a..f5bbb92 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -8199,6 +8199,40 @@ root.
The other options should be self-descriptive.
@end deffn
address@hidden {Scheme Procedure} openssh-service [#: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"]
+Run the @command{sshd} program from @var{openssh} on port
address@hidden @command{sshd} runs an SSH daemon and writes its PID
+to @var{pid-file}. It understands SSH protocol
address@hidden The @var{protocol-number} can be either 1 or 2.
+
address@hidden takes one of @code{#t}, @code{'without-password}
+and @code{#f}. It is used to allow root login through SSH.
address@hidden'without-password} means that root login is allowed, but not with
+password-based authentication.
+
+When @var{allow-empty-passwords?} is true, users with empty passwords
+may log in. When false, they may not.
+
+When @var{password-authentication?} is true, users may log in with their
+password. When false, they have to use other means of authentication.
+
+When @var{pubkey-authentication?} is true, users may log in using public
+key authentication. When false, users have to use other means of
+authentication. Authorized public keys are stored in
address@hidden/.ssh/authorized_keys}. This is used only by protocol version 2.
+
+When @var{rsa-authentication?} is true, users may log in using pure RSA
+authentication. When false, users have to use other means of
+authentication. This is used only by protocol 1.
+
+When @var{x11-forwarding?} is true, @command{ssh} options @option{-X}
+and @option{-Y} will work.
address@hidden deffn
+
@deffn {Scheme Procedure} dropbear-service address@hidden
Run the @uref{https://matt.ucc.asn.au/dropbear/dropbear.html,Dropbear SSH
daemon} with the given @var{config}, a @code{<dropbear-configuration>}
diff --git a/gnu/packages/ssh.scm b/gnu/packages/ssh.scm
index b2612a4..88bfd06 100644
--- a/gnu/packages/ssh.scm
+++ b/gnu/packages/ssh.scm
@@ -144,7 +144,7 @@ a server that supports the SSH-2 protocol.")
("xauth" ,xauth))) ;for 'ssh -X' and 'ssh -Y'
(arguments
`(#:test-target "tests"
- #:configure-flags '("--sysconfdir=/etc"
+ #:configure-flags '("--sysconfdir=/etc/ssh"
;; Default value of 'PATH' used by sshd.
"--with-default-path=/run/current-system/profile/bin"
diff --git a/gnu/services/ssh.scm b/gnu/services/ssh.scm
index 462988c..084f8fa 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 <address@hidden>
;;; Copyright © 2016 David Craven <address@hidden>
+;;; Copyright © 2016 Julien Lepiller <address@hidden>
;;;
;;; 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.
;;;