void-packages/srcpkgs/xbps-triggers/files/system-accounts

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#!/bin/sh
#
# (Un)registers systems accounts (users/groups).
#
# Arguments: $ACTION = [run/targets]
# $TARGET = [post-install/pre-remove]
# $PKGNAME
# $VERSION
# $UPDATE = [yes/no]
#
ACTION="$1"
TARGET="$2"
PKGNAME="$3"
VERSION="$4"
UPDATE="$5"
group_add() {
local _grname _gid use_gid
_grname="${1%:*}"
_gid="${1#*:}"
if [ "${_gid}" != "${_grname}" ]; then
use_gid="gid ${_gid}"
fi
if ! getent group ${_grname} >/dev/null; then
if [ -n "$use_gid" ]; then
groupadd -r ${_grname} -g ${_gid} >/dev/null 2>&1
else
groupadd -r ${_grname} >/dev/null 2>&1
fi
if [ $? -eq 0 ]; then
echo "Created ${_grname} ($use_gid) system group."
else
echo "Failed to create ${_grname} ($use_gid) system group!"
exit 1
fi
fi
}
case "$ACTION" in
targets)
echo "post-install pre-remove"
;;
run)
if [ -z "$system_accounts" -a -z "$system_groups" ]; then
exit 0
fi
if [ -x sbin/useradd ]; then
USERADD=1
fi
if [ -x sbin/userdel ]; then
USERDEL=1
fi
if [ -x sbin/groupadd ]; then
GROUPADD=1
fi
if [ -x sbin/groupdel ]; then
GROUPDEL=1
fi
if [ -x bin/getent -o -x sbin/getent ]; then
GETENT=1
fi
if [ -x bin/passwd -o -x sbin/passwd ]; then
PASSWD=1
fi
case "$TARGET" in
post-install)
# System groups required by a package.
for grp in ${system_groups}; do
if [ -z "$GROUPADD" -a -z "$GETENT" ]; then
echo "WARNING: cannot create ${grp} system group (missing groupadd/getent)"
echo "The following group must be created manually: $grp"
continue
fi
group_add $grp
done
# System user/group required by a package.
for acct in ${system_accounts}; do
_uname="${acct%:*}"
_uid="${acct#*:}"
[ "${_uid}" != "${_uname}" ] && use_id="-u ${_uid} -g ${_uid}"
eval homedir="\$${_uname}_homedir"
eval shell="\$${_uname}_shell"
eval descr="\$${_uname}_descr"
eval groups="\$${_uname}_groups"
[ -z "$homedir" ] && homedir="/"
[ -z "$shell" ] && shell="/sbin/nologin"
[ -z "$descr" ] && descr="${_uname} unprivileged user"
[ -n "$groups" ] && user_groups="-G $groups"
if [ -z "$USERADD" -a -z "$GETENT" -a -z "$PASSWD" ]; then
echo "WARNING: cannot create ${acct} system user/group (missing useradd/getent/passwd)"
echo "The following system account must be created:"
echo " Account: ${uname:-${_uid}} (uid: '${_uid}')"
echo " Description: '${descr}'"
echo " Homedir: '${homedir}'"
echo " Shell: '${shell}'"
echo " Additional groups: '${groups}'"
continue
fi
group_add ${acct}
if ! getent passwd ${_uname} >/dev/null; then
useradd -c "$descr" -d "$homedir" -s "$shell" \
${user_groups} ${use_id:=-g ${_uname}} -r ${_uname} && \
passwd -l ${_uname} >/dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Created ${_uname} (${_uid}) system user."
else
echo "Failed to create ${acct} system user!"
exit 1
fi
fi
done
;;
pre-remove)
#
# Only unregister if we aren't updating a package.
#
if [ "$UPDATE" = "no" ]; then
for acct in ${system_accounts}; do
_uname="${acct%:*}"
_uid="${acct#*:}"
if [ -z "$USERDEL" ]; then
echo "WARNING: cannot remove ${acct} system user/group (missing userdel)"
continue
fi
userdel ${_uname} >/dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Removed ${_uname} (${_uid}) system user/group."
fi
done
for grp in ${system_groups}; do
_uname="${acct%:*}"
_uid="${acct#*:}"
if [ -z "$GROUPDEL" ]; then
echo "WARNING: cannot remove ${acct} system group (missing groupdel)"
continue
fi
groupdel ${_uname} >/dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Removed ${_uname} (${_uid}) system group."
fi
done
fi
;;
esac
;;
*)
exit 1
;;
esac
exit 0