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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.su)
(named-readtables:in-readtable :consfigurator)
(defmethod establish-connection ((type (eql :su)) remaining &key to)
(declare (ignore remaining))
;; We don't support using su with a password. Use :SUDO for that.
(assert-remote-euid-root)
(informat 1 "~&Switching to user ~A" to)
(make-instance 'su-connection :user to))
(defclass su-connection (shell-wrap-connection)
((user :initarg :user)))
;; Note that the -c here is an argument to the user's login shell, not the -c
;; argument to su(1) on, e.g., FreeBSD. So this should be fairly portable.
(defmethod connection-shell-wrap ((connection su-connection) cmd)
(format nil "su ~A -c ~A"
(sh-escape (slot-value connection 'user)) (sh-escape cmd)))
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