#!/bin/sh

# Created by: stb@FreeBSD.org for the cyrus imap server
# Added to the cyrus-sasl port by hetzels@westbend.net

#set -vx

PKG_BATCH=${BATCH:=NO}
PKG_PREFIX=${PKG_PREFIX:=/usr/local}
SASLDB_DIR=%%SASLDB_DIR%%
SASLDB_NAME=%%SASLDB_NAME%%
SASLDB_NAME=${SASLDB_NAME:+%%SASLDB_DIR%%/%%SASLDB_NAME%%}
CYRUS_USER=${CYRUS_USER:=%%CYRUS_USER%%}
CYRUS_GROUP=${CYRUS_GROUP:=%%CYRUS_GROUP%%}

#
# create 'cyrus' user and group before installing
#
create_user() {
	USER=${CYRUS_USER}
	GROUP=${CYRUS_GROUP}
	PW=/usr/sbin/pw

	if [ -x /usr/sbin/nologin ]; then
		shell=/usr/sbin/nologin
	elif [ -x /sbin/nologin ]; then
		shell=/sbin/nologin
	else
		shell=/nonexistent
	fi
	uhome="/nonexistent"

	if ! ${PW} show group ${GROUP} -q >/dev/null; then
		gid=60
		while ${PW} show group -g ${gid} -q >/dev/null; do
			gid=`expr ${gid} + 1`
		done
		if ! ${PW} add group ${GROUP} -g ${gid}; then
			e=$?
			echo "*** Failed to add group \`${GROUP}'. Please add it manually."
			exit ${e}
		fi
		echo "*** Added group \`${GROUP}' (id ${gid})"
	else
		gid=`${PW} show group ${GROUP} 2>/dev/null | cut -d: -f3`
	fi

	if ! ${PW} show user ${USER} -q >/dev/null; then
		uid=60
		while ${PW} show user -u ${uid} -q >/dev/null; do
			uid=`expr ${uid} + 1`
		done
		if ! ${PW} add user ${USER} -u ${uid} -g ${gid} -d "${uhome}" \
				-c "the cyrus mail server" -s "${shell}" -w no \
				; then
			e=$?
			echo "*** Failed to add user \`${USER}'. Please add it manually."
			exit ${e}
		fi
		echo "*** Added user \`${USER}' (id ${uid})"
	else
		if ! ${PW} mod user ${USER} -g ${gid}; then
			e=$?
			echo "*** Failed to update user \`${USER}'."
			exit ${e}
		fi
		echo "*** Updated user \`${USER}'."
	fi
}

create_sasldb() {
	if [ ! -f ${SASLDB_NAME} ]; then
		if [ ${SASLDB_DIR} = '/var/db/sasl2' -a ! -d ${SASLDB_DIR} ]; then
			mkdir ${SASLDB_DIR}
			chown ${CYRUS_USER}:mail ${SASLDB_DIR}
			chmod 750 ${SASLDB_DIR}
		fi
		echo "test" | ${PKG_PREFIX}/sbin/saslpasswd2 -p -c ${CYRUS_USER}
		if [ `${PKG_PREFIX}/sbin/sasldblistusers2 | wc -l` -eq 0 ] ; then
                        echo "WARNING: Failed to create ${SASLDB_NAME}"
                else
			${PKG_PREFIX}/sbin/saslpasswd2 -d ${CYRUS_USER}
			chown ${CYRUS_USER}:mail ${SASLDB_NAME}
			chmod 640 ${SASLDB_NAME}
			if [ -f ${SASLDB_NAME}-lock ]; then
				chown ${CYRUS_USER}:mail ${SASLDB_NAME}-lock
				chmod 660 ${SASLDB_NAME}-lock
			fi
		fi
	fi
}

case $2 in
	PRE-INSTALL)
		create_user
		;;
	POST-INSTALL)
		if [ "${PKG_BATCH}" = "NO" ]; then
			if [ -n "${SASLDB_NAME}" ]; then
				create_sasldb
			fi
		elif [ -n "${SASLDB_NAME}" -a ! -f ${SASLDB_NAME} ]; then
			echo "*** We do not create ${SASLDB_NAME} automatically in"
			echo "*** BATCH mode.  Please create it by yourself.  It should be"
			echo "*** owner: ${CYRUS_USER}, group: mail, mode: 0640."
		fi
		;;
esac