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services: openssh: Add escape hatch.

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* gnu/services/ssh.scm (<openssh-configuration>)[extra-content]: New field.
* doc/guix.texi (Networking Services): Document it.
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Ricardo Wurmus 2019-01-17 17:53:57 +01:00
parent 3d7ad1dc9f
commit 65cd70ce42
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13
doc/guix.texi
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@ -12644,6 +12644,19 @@ This is a symbol specifying the logging level: @code{quiet}, @code{fatal},
@code{error}, @code{info}, @code{verbose}, @code{debug}, etc. See the man
page for @file{sshd_config} for the full list of level names.
@item @code{extra-content} (default: @code{""})
This field can be used to append arbitrary text to the configuration file. It
is especially useful for elaborate configurations that cannot be expressed
otherwise. This configuration, for example, would generally disable root
logins, but permit them from one specific IP address:
@example
(openssh-configuration
(extra-content "\
Match Address 192.168.0.1
PermitRootLogin yes"))
@end example
@end table
@end deftp

10
gnu/services/ssh.scm
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@ -3,6 +3,7 @@
;;; Copyright © 2016 David Craven <david@craven.ch>
;;; Copyright © 2016 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; This file is part of GNU Guix.
;;;
@ -323,6 +324,12 @@ (define-record-type* <openssh-configuration>
(log-level openssh-configuration-log-level
(default 'info))
;; String
;; This is an "escape hatch" to provide configuration that isn't yet
;; supported by this configuration record.
(extra-content openssh-configuration-extra-content
(default ""))
;; list of user-name/file-like tuples
(authorized-keys openssh-authorized-keys
(default '()))
@ -471,6 +478,9 @@ (define (openssh-config-file config)
(match-lambda
((name command) (format port "Subsystem\t~a\t~a\n" name command)))
'#$(openssh-configuration-subsystems config))
(format port "~a\n"
#$(openssh-configuration-extra-content config))
#t)))))
(define (openssh-shepherd-service config)