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ee08277a70
* gnu/home/services/ssh.scm (serialize-address-family): Use the public API of
the maybe infrastructure.
* gnu/services/file-sharing.scm (serialize-maybe-string): Use maybe-value.
(serialize-maybe-file-object): Use maybe-value-set?.
* gnu/services/getmail.scm (getmail-retriever-configuration): Don't use
internals in unset field declarations.
(getmail-destination-configuration): Ditto.
* gnu/services/messaging.scm (raw-content?): Use maybe-value-set?.
(prosody-configuration): Use %unset-value.
* gnu/services/telephony.scm (jami-shepherd-services): Use maybe-value-set?.
(archive-name->username): Use maybe-value-set?.
* tests/services/configuration.scm ("maybe type, no default"): Use
%unset-value.
Modified-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
256 lines
9.3 KiB
Scheme
256 lines
9.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2022 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu home services ssh)
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#:use-module (guix gexp)
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#:use-module (guix records)
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#:use-module (guix diagnostics)
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#:use-module (guix i18n)
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#:use-module (gnu services)
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#:use-module (gnu services configuration)
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#:use-module (guix modules)
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#:use-module (gnu home services)
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#:use-module ((gnu home services utils)
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#:select (object->camel-case-string))
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#:autoload (gnu packages base) (glibc-utf8-locales)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:use-module (ice-9 match)
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#:export (home-openssh-configuration
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home-openssh-configuration-authorized-keys
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home-openssh-configuration-known-hosts
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home-openssh-configuration-hosts
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openssh-host
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openssh-host-host-name
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openssh-host-identity-file
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openssh-host-name
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openssh-host-port
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openssh-host-user
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openssh-host-forward-x11?
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openssh-host-forward-x11-trusted?
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openssh-host-forward-agent?
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openssh-host-compression?
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openssh-host-proxy-command
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openssh-host-host-key-algorithms
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openssh-host-accepted-key-types
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openssh-host-extra-content
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home-openssh-service-type))
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(define (serialize-field-name name)
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(match name
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('accepted-key-types "PubkeyAcceptedKeyTypes")
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(_
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(let ((name (let ((str (symbol->string name)))
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(if (string-suffix? "?" str)
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(string->symbol (string-drop-right str 1))
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name))))
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(object->camel-case-string name 'upper)))))
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(define (serialize-string field value)
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(string-append " " (serialize-field-name field)
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" " value "\n"))
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(define (address-family? obj)
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(memv obj (list AF_INET AF_INET6)))
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(define-maybe address-family)
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(define (serialize-address-family field family)
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(if (maybe-value-set? family)
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(string-append " " (serialize-field-name field) " "
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(cond ((= family AF_INET) "inet")
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((= family AF_INET6) "inet6")
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;; The 'else' branch is unreachable.
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(else (raise (condition (&error)))))
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"\n")
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""))
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(define (natural-number? obj)
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(and (integer? obj) (exact? obj) (> obj 0)))
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(define (serialize-natural-number field value)
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(string-append " " (serialize-field-name field) " "
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(number->string value) "\n"))
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(define (serialize-boolean field value)
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(string-append " " (serialize-field-name field) " "
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(if value "yes" "no") "\n"))
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(define-maybe string)
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(define-maybe natural-number)
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(define (serialize-raw-configuration-string field value)
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(string-append value "\n"))
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(define raw-configuration-string? string?)
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(define (string-list? lst)
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(and (pair? lst) (every string? lst)))
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(define (serialize-string-list field lst)
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(string-append " " (serialize-field-name field) " "
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(string-join lst ",") "\n"))
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(define-maybe string-list)
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(define-configuration openssh-host
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(name
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(string)
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"Name of this host declaration.")
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(host-name
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maybe-string
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"Host name---e.g., @code{\"foo.example.org\"} or @code{\"192.168.1.2\"}.")
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(address-family
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maybe-address-family
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"Address family to use when connecting to this host: one of
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@code{AF_INET} (for IPv4 only), @code{AF_INET6} (for IPv6 only).
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Additionally, the field can be left unset to allow any address family.")
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(identity-file
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maybe-string
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"The identity file to use---e.g.,
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@code{\"/home/charlie/.ssh/id_ed25519\"}.")
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(port
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maybe-natural-number
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"TCP port number to connect to.")
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(user
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maybe-string
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"User name on the remote host.")
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(forward-x11?
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(boolean #f)
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"Whether to forward remote client connections to the local X11 graphical
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display.")
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(forward-x11-trusted?
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(boolean #f)
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"Whether remote X11 clients have full access to the original X11 graphical
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display.")
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(forward-agent?
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(boolean #f)
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"Whether the authentication agent (if any) is forwarded to the remote
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machine.")
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(compression?
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(boolean #f)
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"Whether to compress data in transit.")
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(proxy-command
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maybe-string
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"The command to use to connect to the server. As an example, a command
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to connect via an HTTP proxy at 192.0.2.0 would be: @code{\"nc -X
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connect -x 192.0.2.0:8080 %h %p\"}.")
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(host-key-algorithms
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maybe-string-list
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"The list of accepted host key algorithms---e.g.,
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@code{'(\"ssh-ed25519\")}.")
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(accepted-key-types
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maybe-string-list
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"The list of accepted user public key types.")
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(extra-content
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(raw-configuration-string "")
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"Extra content appended as-is to this @code{Host} block in
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@file{~/.ssh/config}."))
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(define (serialize-openssh-host config)
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(define (openssh-host-name-field? field)
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(eq? (configuration-field-name field) 'name))
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(string-append
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"Host " (openssh-host-name config) "\n"
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(string-concatenate
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(map (lambda (field)
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((configuration-field-serializer field)
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(configuration-field-name field)
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((configuration-field-getter field) config)))
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(remove openssh-host-name-field?
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openssh-host-fields)))))
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(define-record-type* <home-openssh-configuration>
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home-openssh-configuration make-home-openssh-configuration
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home-openssh-configuration?
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(authorized-keys home-openssh-configuration-authorized-keys ;list of file-like
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(default '()))
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(known-hosts home-openssh-configuration-known-hosts ;unspec | list of file-like
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(default *unspecified*))
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(hosts home-openssh-configuration-hosts ;list of <openssh-host>
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(default '())))
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(define (openssh-configuration->string config)
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(string-join (map serialize-openssh-host
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(home-openssh-configuration-hosts config))
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"\n"))
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(define* (file-join name files #:optional (delimiter " "))
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"Return a file in the store called @var{name} that is the concatenation
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of all the file-like objects listed in @var{files}, with @var{delimited}
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inserted after each of them."
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(computed-file name
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(with-imported-modules '((guix build utils))
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#~(begin
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(use-modules (guix build utils))
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;; Support non-ASCII file names.
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(setenv "GUIX_LOCPATH"
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#+(file-append glibc-utf8-locales
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"/lib/locale"))
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(setlocale LC_ALL "en_US.utf8")
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(call-with-output-file #$output
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(lambda (output)
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(for-each (lambda (file)
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(call-with-input-file file
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(lambda (input)
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(dump-port input output)))
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(display #$delimiter output))
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'#$files)))))))
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(define (openssh-configuration-files config)
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(let ((config (plain-file "ssh.conf"
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(openssh-configuration->string config)))
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(known-hosts (home-openssh-configuration-known-hosts config))
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(authorized-keys (file-join
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"authorized_keys"
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(home-openssh-configuration-authorized-keys config)
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"\n")))
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`((".ssh/authorized_keys" ,authorized-keys)
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,@(if (unspecified? known-hosts)
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'()
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`((".ssh/known_hosts"
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,(file-join "known_hosts" known-hosts "\n"))))
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(".ssh/config" ,config))))
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(define openssh-activation
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(with-imported-modules (source-module-closure
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'((gnu build activation)))
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#~(begin
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(use-modules (gnu build activation))
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;; Make sure ~/.ssh is #o700.
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(let* ((home (getenv "HOME"))
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(dot-ssh (string-append home "/.ssh")))
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(mkdir-p/perms dot-ssh (getpw (getuid)) #o700)))))
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(define home-openssh-service-type
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(service-type
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(name 'home-openssh)
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(extensions
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(list (service-extension home-files-service-type
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openssh-configuration-files)
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(service-extension home-activation-service-type
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(const openssh-activation))))
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(description "Configure the OpenSSH @acronym{SSH, secure shell} client
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by providing a @file{~/.ssh/config} file, which is honored by the OpenSSH
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client,@command{ssh}, and by other tools such as @command{guix deploy}.")
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(default-value (home-openssh-configuration))))
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