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95 lines
2.4 KiB
Bash
95 lines
2.4 KiB
Bash
#!/bin/sh
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#-
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# Copyright (c) 2014 Dag-Erling Smørgrav
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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#
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error() {
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echo "$@" >&2
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exit 1
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}
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usage() {
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error "usage: vigr [-d dir]"
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}
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# Check arguments
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while getopts d: opt ; do
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case $opt in
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d)
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etcdir="${OPTARG}"
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;;
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*)
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usage
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;;
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esac
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done
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# Look for the current group file
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grpfile="${etcdir:-/etc}/group"
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if [ ! -f "${grpfile}" ] ; then
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error "Missing group file"
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fi
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# Create a secure temporary working directory
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tmpdir=$(mktemp -d -t vigr)
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if [ -z "${tmpdir}" -o ! -d "${tmpdir}" ] ; then
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error "Unable to create the temporary directory"
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fi
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tmpfile="${tmpdir}/group"
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# Clean up on exit
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trap "exit 1" INT
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trap "rm -rf '${tmpdir}'" EXIT
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set -e
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# Make a copy of the group file for the user to edit
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cp "${grpfile}" "${tmpfile}"
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while :; do
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# Let the user edit the file
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${EDITOR:-/usr/bin/vi} "${tmpfile}"
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# If the result is valid, install it and exit
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if chkgrp -q "${tmpfile}" ; then
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install -b -m 0644 -C -S "${tmpfile}" "${grpfile}"
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exit 0
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fi
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# If it is not, offer to re-edit
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while :; do
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echo -n "Re-edit the group file? "
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read ans
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case $ans in
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[Yy]|[Yy][Ee][Ss])
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break
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;;
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[Nn]|[Nn][Oo])
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exit 1
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;;
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esac
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done
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done
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