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home: services: ssh: Add 'add-keys-to-agent' field.

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* gnu/home/services/ssh.scm (<home-openssh-configuration>)[add-keys-to-agent]:
New field.
(serialize-add-keys-to-agent): New procedure.
(openssh-configuration->string): Use it.
* doc/guix.texi (Secure Shell): Document it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Nicolas Graves 2023-06-05 14:34:45 +02:00 • committed by Ludovic Courtès
parent 48812c85dd
commit f19e1b4f96
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2 changed files with 54 additions and 9 deletions
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49
gnu/home/services/ssh.scm
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@ -1,6 +1,7 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2023 Janneke Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2023 Nicolas Graves <ngraves@ngraves.fr>
;;;
;;; This file is part of GNU Guix.
;;;
@ -38,10 +39,12 @@
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
#:use-module (ice-9 match)
#:autoload (ice-9 regex) (string-match match:substring)
#:export (home-openssh-configuration
home-openssh-configuration-authorized-keys
home-openssh-configuration-known-hosts
home-openssh-configuration-hosts
home-openssh-configuration-add-keys-to-agent
home-ssh-agent-configuration
openssh-host
@ -248,17 +251,45 @@ through before connecting to the server.")
(define-record-type* <home-openssh-configuration>
home-openssh-configuration make-home-openssh-configuration
home-openssh-configuration?
(authorized-keys home-openssh-configuration-authorized-keys ;list of file-like
(default #f))
(known-hosts home-openssh-configuration-known-hosts ;unspec | list of file-like
(default *unspecified*))
(hosts home-openssh-configuration-hosts ;list of <openssh-host>
(default '())))
(authorized-keys home-openssh-configuration-authorized-keys ;list of file-like
(default #f))
(known-hosts home-openssh-configuration-known-hosts ;unspec | list of file-like
(default *unspecified*))
(hosts home-openssh-configuration-hosts ;list of <openssh-host>
(default '()))
(add-keys-to-agent home-openssh-configuration-add-keys-to-agent ;string with limited values
(default "no")))
(define (serialize-add-keys-to-agent value)
(define (valid-time-string? str)
(and (> (string-length str) 0)
(equal?
str
(match:substring
(string-match "\
[0-9]+|([0-9]+[Ww])?([0-9]+[Dd])?([0-9]+[Hh])?([0-9]+[Mm])?([0-9]+[Ss])?"
str)))))
(string-append "AddKeysToAgent "
(cond ((member value '("yes" "no" "confirm" "ask")) value)
((valid-time-string? value) value)
((and (string-prefix? "confirm" value)
(valid-time-string?
(cdr (string-split value #\ )))) value)
;; The 'else' branch is unreachable.
(else
(raise
(formatted-message
(G_ "~s: invalid 'add-keys-to-agent' value")
value))))))
(define (openssh-configuration->string config)
(string-join (map serialize-openssh-host
(home-openssh-configuration-hosts config))
"\n"))
(string-join
(cons* (serialize-add-keys-to-agent
(home-openssh-configuration-add-keys-to-agent config))
(map serialize-openssh-host
(home-openssh-configuration-hosts config)))
"\n"))
(define* (file-join name files #:optional (delimiter " "))
"Return a file in the store called @var{name} that is the concatenation