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;;; blessmail.el --- decide whether movemail needs special privileges -*- no-byte-compile: t -*-
;; Copyright (C) 1994, 2001-2015 Free Software Foundation, Inc.
;; Maintainer: emacs-devel@gnu.org
;; Keywords: internal
;; Package: emacs
;; This file is part of GNU Emacs.
;; GNU Emacs 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 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This is loaded into a bare Emacs to create the blessmail script,
;; which (on systems that need it) is used during installation
;; to give appropriate permissions to movemail.
;;
;; It has to be done from lisp in order to be sure of getting the
;; correct value of rmail-spool-directory.
;;; Code:
;; These are no longer needed because we run this in emacs instead of temacs.
;; (message "Using load-path %s" load-path)
;; (load "paths.el")
;; It is not safe to load site-init.el here, because it might have things in it
;; that won't load properly unless all the rest of Emacs is loaded.
(let ((dirname (directory-file-name rmail-spool-directory))
linkname attr modes)
;; Check for symbolic link
(while (setq linkname (file-symlink-p dirname))
(setq dirname (if (file-name-absolute-p linkname)
linkname
(concat (file-name-directory dirname) linkname))))
(insert "#!/bin/sh\n")
(setq attr (file-attributes dirname))
(if (not (eq t (car attr)))
(insert (format "echo %s is not a directory\n" rmail-spool-directory))
(setq modes (nth 8 attr))
(cond ((= ?w (aref modes 8))
;; Nothing needs to be done.
)
((= ?w (aref modes 5))
(insert "chgrp " (number-to-string (nth 3 attr))
" $* && chmod g+s $*\n"))
((= ?w (aref modes 2))
(insert "chown " (number-to-string (nth 2 attr))
" $* && chmod u+s $*\n"))
(t
(insert "chown root $* && chmod u+s $*\n"))))
(insert "echo mail directory = " dirname "\n"))
(write-region (point-min) (point-max) "blessmail")
(kill-emacs)
;;; blessmail.el ends here
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