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# Copyright (c) 2017 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Johnny C. Lam.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# NAME
# usergroup_Linux -- usergroup implementation for Linux
#
# SYNOPSIS
# platform_groupadd [-g <gid>] <group>
#
# platform_useradd [-c <descr>] [-d <home>] [-g <group>]
# [-s <shell>] [-u <uid>] <user>
#
# DESCRIPTION
# The functions implement a NetBSD/Solaris-compatible groupadd and
# useradd.
#
# RETURN VALUES
# All functions return 0 on success, and return non-zero otherwise.
#
# ENVIRONMENT
# The following variables are used if they are set:
#
# GROUPADD
# The name or path to the groupadd(8) utility.
#
# USERADD
# The name or path to the useradd(8) utility.
#
# NOTES
# The useradd(8) utility on Linux is a complete mess. At least Red
# Hat derivatives want to create home directories by default. They
# have support for -M, but no --help. Other Linux distributions lack
# -M support, but some at least have --help. LSB just wants
# useradd(8), but doesn't specify any behavior, so it is useless for
# writing portable scripts.
#
__task_usergroup_Linux__="yes"
task_load match
task_load quote
platform_groupadd()
{
: ${GROUPADD:=groupadd}
local gid=
local groupadd_args=
local arg quoted
local OPTIND=1
while getopts ":g:" arg "$@"; do
case $arg in
g) task_quote "${OPTARG}"
groupadd_args="$groupadd_args -$arg $quoted" ;;
*) return 127 ;;
esac
done
shift $(( ${OPTIND} - 1 ))
# A <group> argument is required.
[ $# -eq 1 ] || return 127
local group="$1"; shift
[ -n "$group" ] || return 1
# If no GID is specified, then use a GID from the system GID range.
if [ -z "$gid" ]; then
groupadd_args="$groupadd_args -r"
fi
task_quote "$group"
groupadd_args="$groupadd_args $quoted"
eval ${GROUPADD} $groupadd_args
}
platform_useradd()
{
: ${USERADD:=useradd}
: ${LOGIN_DEFS:=/etc/login.defs}
local uid=
local useradd_args=
local arg quoted
local OPTIND=1
while getopts ":c:d:g:s:u:" arg "$@"; do
case $arg in
[cdgsu])
# valid useradd options for useradd(8)
case $arg in u) uid=${OPTARG} ;; esac
task_quote "${OPTARG}"
useradd_args="$useradd_args -$arg $quoted" ;;
*) return 127 ;;
esac
done
shift $(( ${OPTIND} - 1 ))
# A <user> argument is required.
[ $# -eq 1 ] || return 127
local user="$1"; shift
[ -n "$user" ] || return 1
# Don't create the home directory, even if CREATE_HOME is "yes" in
# /etc/login.defs.
#
if [ -f "${LOGIN_DEFS}" ] &&
task_match -qw "CREATE_HOME*[yY][eE][sS]" < ${LOGIN_DEFS}; then
useradd_args="$useradd_args -M"
fi
# If no UID is specified, then use a UID from the system UID range.
if [ -z "$uid" ]; then
useradd_args="$useradd_args -r"
fi
task_quote "$user"
useradd_args="$useradd_args $quoted"
eval ${USERADD} $useradd_args
}
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