#!/bin/sh
#
#	$FreeBSD: ports/mail/dovecot/files/pkg-install.in,v 1.3 2012/11/17 05:59:01 svnexp Exp $
#

PKG_PREFIX=${PKG_PREFIX:=/usr/local}

ask() {
	local question default answer

	question=$1
	default=$2
	if [ -z "${PACKAGE_BUILDING}" -a -z "${BATCH}" ]; then
		read -p "${question} [${default}]? " answer
	fi
	echo ${answer:-${default}}
}

yesno() {
	local question default answer

	question=$1
	default=$2
	while :; do
		answer=$(ask "${question}" "${default}")
		case "${answer}" in
		[Yy]*)	return 0;;
		[Nn]*)	return 1;;
		esac
		echo "Please answer yes or no."
	done
}

create_account() {
	local port user uid group gid gcos home shell

	port=$1
	user=${2%:*}
	uid=${2#*:}
	group=${3%:*}
	gid=${3#*:}
	gcos=$4
	home=$5
	shell=$6

	pw_user_uid=$(pw usershow -n "${user}" 2>/dev/null | cut -d: -f3)
	pw_uid_user=$(pw usershow -u "${uid}" 2>/dev/null | cut -d: -f1)
	pw_group_gid=$(pw groupshow -n "${group}" 2>/dev/null | cut -d: -f3)
	pw_gid_group=$(pw groupshow -g "${gid}" 2>/dev/null | cut -d: -f1)

	if [ -z "${pw_group_gid}" -a -z "${pw_gid_group}" ]; then
		echo "You need a ${group} group; creating it..."
		pw groupadd "${group}" -g "${gid}" || exit
		echo "Done."
	elif [ "${gid}" = "${pw_group_gid}" -a "${group}" = "${pw_gid_group}" ]; then
		echo "Using existing ${group} group."
	else
		echo "${port} has reserved the groupname '${group}' and gid '${gid}':"
		[ -n "${pw_group_gid}" -a "${gid}"   != "${pw_group_gid}" ] \
			&& echo "ERROR: groupname '${group}' already in use by gid '${pw_group_gid}'"
		[ -n "${pw_gid_group}" -a "${group}" != "${pw_gid_group}" ] \
			&& echo "ERROR: gid '${gid}' already in use by group '${pw_gid_group}'"
		echo "Please resolve these issues and try again:"
		echo "Either remove the conflicting group or if you wish to continue using a legacy group override DOVECOT_GID."
		exit 1
	fi

	if [ -z "${pw_user_uid}" -a -z "${pw_uid_user}" ]; then
		echo "You need a ${user} user; creating it..."
		pw useradd "${user}" -u "${uid}" -g "${group}" -c "${gcos}" -d "${home}" -s "${shell}"
		echo "Done."
	elif [ "${uid}" = "${pw_user_uid}" -a "${user}" = "${pw_uid_user}" ]; then
		echo "Using existing ${user} user."
	else
		echo "${port} has reserved the username '${user}' and uid '${uid}':"
		[ -n "${pw_user_uid}" -a "${uid}"  != "${pw_user_uid}" ] \
			&& echo "ERROR: username '${user}' already in use by uid '${pw_user_uid}'"
		[ -n "${pw_uid_user}" -a "${user}" != "${pw_uid_user}" ] \
			&& echo "ERROR: uid '${uid}' already in use by user '${pw_uid_user}'"
		echo "Please resolve these issues and try again:"
		echo "Either remove the conflicting user or if you wish to continue using a legacy user override DOVECOT_UID."
		exit 1
	fi
}

case $2 in

PRE-INSTALL)
	create_account Dovecot dovecot:${DOVECOT_UID:-143} dovecot:${DOVECOT_GID:-143} "Dovecot User" /var/empty /usr/sbin/nologin
	;;

esac
