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;;; Consfigurator -- Lisp declarative configuration management system
;;; Copyright (C) 2021 Sean Whitton <spwhitton@spwhitton.name>
;;; This file is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3, or (at your option)
;;; any later version.
;;; This file is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(in-package :consfigurator.connection.ssh)
(named-readtables:in-readtable :consfigurator)
(defmethod establish-connection ((type (eql :ssh)) remaining
&key
(hop (get-hostname))
user)
(declare (ignore remaining))
(informat 1 "~&Establishing SSH connection to ~A" hop)
(aprog1 (make-instance 'ssh-connection :hostname hop :user user)
(mrun "ssh" (ssh-host it) ":")))
(defclass ssh-connection (shell-wrap-connection)
((hostname
:initarg :hostname
:documentation "Hostname to SSH to.")
;; This is deliberately distinct from the :REMOTE-USER connattr.
(user
:initarg :user
:documentation "User to log in as."))
(:documentation "Deploy properties using non-interactive SSH."))
(defun ssh-host (connection)
(if-let ((user (slot-value connection 'user)))
(format nil "~A@~A" user (slot-value connection 'hostname))
(slot-value connection 'hostname)))
(defmethod connection-shell-wrap ((connection ssh-connection) cmd)
;; wrap in 'sh -c' in case the login shell is not POSIX
(format nil "ssh ~A ~A"
(ssh-host connection)
(sh-escape (format nil "sh -c ~A" (sh-escape cmd)))))
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