diff options
| -rw-r--r-- | doc/guix.texi | 34 | ||||
| -rw-r--r-- | gnu/packages/ssh.scm | 2 | ||||
| -rw-r--r-- | gnu/services/ssh.scm | 131 |
3 files changed, 166 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 239428a75a..f5bbb92c7c 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -8199,6 +8199,40 @@ root. The other options should be self-descriptive. @end deffn +@deffn {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 +@var{port-number}. @command{sshd} runs an SSH daemon and writes its PID +to @var{pid-file}. It understands SSH protocol +@var{protocol-number}. The @var{protocol-number} can be either 1 or 2. + +@var{permit-root-login} takes one of @code{#t}, @code{'without-password} +and @code{#f}. It is used to allow root login through SSH. +@code{'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 +@file{~/.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. +@end deffn + @deffn {Scheme Procedure} dropbear-service [@var{config}] 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 b2612a495f..88bfd062df 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 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. ;;; |