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services: lsh: Add graceful handling of daemonic option.

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* gnu/services/ssh.scm (lsh-service): New #:keys (daemonic?, pid-file?,
  pid-file).  Build new lshd-command and expand service-requirement
  field.
* doc/guix.texi (Networking Services): Update accordingly.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
nebuli 2014-12-03 22:51:48 +01:00 committed by Ludovic Courtès
parent a677c7267b
commit 5833bf33a2
2 changed files with 52 additions and 20 deletions
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8
doc/guix.texi
View file

@ -4526,7 +4526,7 @@ configuration file.
Furthermore, @code{(gnu services ssh)} provides the following service.
@deffn {Monadic Procedure} lsh-service [#:host-key "/etc/lsh/host-key"] @
[#:interfaces '()] [#:port-number 22] @
[#:daemonic? #t] [#:interfaces '()] [#:port-number 22] @
[#:allow-empty-passwords? #f] [#:root-login? #f] @
[#:syslog-output? #t] [#:x11-forwarding? #t] @
[#:tcp/ip-forwarding? #t] [#:password-authentication? #t] @
@ -4535,6 +4535,12 @@ Run the @command{lshd} program from @var{lsh} to listen on port @var{port-number
@var{host-key} must designate a file containing the host key, and readable
only by root.
When @var{daemonic?} is true, @command{lshd} will detach from the
controlling terminal and log its output to syslogd, unless one sets
@var{syslog-output?} to false. Obviously, it also makes lsh-service
depend on existence of syslogd service. When @var{pid-file?} is true,
@command{lshd} writes its PID to the file called @var{pid-file}.
When @var{initialize?} is true, automatically create the seed and host key
upon service activation if they do not exist yet. This may take long and
require interaction.

64
gnu/services/ssh.scm
View file

@ -73,12 +73,15 @@ (define (activation lsh host-key)
(define* (lsh-service #:key
(lsh lsh)
(daemonic? #t)
(host-key "/etc/lsh/host-key")
(interfaces '())
(port-number 22)
(allow-empty-passwords? #f)
(root-login? #f)
(syslog-output? #t)
(pid-file? #f)
(pid-file "/var/run/lshd.pid")
(x11-forwarding? #t)
(tcp/ip-forwarding? #t)
(password-authentication? #t)
@ -88,6 +91,12 @@ (define* (lsh-service #:key
@var{host-key} must designate a file containing the host key, and readable
only by root.
When @var{daemonic?} is true, @command{lshd} will detach from the
controlling terminal and log its output to syslogd, unless one sets
@var{syslog-output?} to false. Obviously, it also makes lsh-service
depend on existence of syslogd service. When @var{pid-file?} is true,
@command{lshd} writes its PID to the file called @var{pid-file}.
When @var{initialize?} is true, automatically create the seed and host key
upon service activation if they do not exist yet. This may take long and
require interaction.
@ -107,30 +116,47 @@ (define* (lsh-service #:key
The other options should be self-descriptive."
(define lsh-command
(cons* #~(string-append #$lsh "/sbin/lshd")
#~(string-append "--host-key=" #$host-key)
#~(string-append "--password-helper=" #$lsh "/sbin/lsh-pam-checkpw")
#~(string-append "--subsystems=sftp=" #$lsh "/sbin/sftp-server")
"-p" (number->string port-number)
(if password-authentication? "--password" "--no-password")
(if public-key-authentication?
"--publickey" "--no-publickey")
(if root-login?
"--root-login" "--no-root-login")
(if x11-forwarding?
"--x11-forward" "--no-x11-forward")
(if tcp/ip-forwarding?
"--tcpip-forward" "--no-tcpip-forward")
(if (null? interfaces)
'()
(list (string-append "--interfaces="
(string-join interfaces ","))))))
(append
(cons #~(string-append #$lsh "/sbin/lshd")
(if daemonic?
(let ((syslog (if syslog-output? '()
(list "--no-syslog"))))
(cons "--daemonic"
(if pid-file?
(cons #~(string-append "--pid-file=" #$pid-file)
syslog)
(cons "--no-pid-file" syslog))))
(if pid-file?
(list #~(string-append "--pid-file=" #$pid-file))
'())))
(cons* #~(string-append "--host-key=" #$host-key)
#~(string-append "--password-helper=" #$lsh "/sbin/lsh-pam-checkpw")
#~(string-append "--subsystems=sftp=" #$lsh "/sbin/sftp-server")
"-p" (number->string port-number)
(if password-authentication? "--password" "--no-password")
(if public-key-authentication?
"--publickey" "--no-publickey")
(if root-login?
"--root-login" "--no-root-login")
(if x11-forwarding?
"--x11-forward" "--no-x11-forward")
(if tcp/ip-forwarding?
"--tcpip-forward" "--no-tcpip-forward")
(if (null? interfaces)
'()
(list (string-append "--interfaces="
(string-join interfaces ",")))))))
(define requires
(if (and daemonic? syslog-output?)
'(networking syslogd)
'(networking)))
(with-monad %store-monad
(return (service
(documentation "GNU lsh SSH server")
(provision '(ssh-daemon))
(requirement '(networking))
(requirement requires)
(start #~(make-forkexec-constructor (list #$@lsh-command)))
(stop #~(make-kill-destructor))
(pam-services