freebsd-ports/mail/dovecot-devel/pkg-install

#!/bin/sh
#
#	$FreeBSD$
#
# ex:ts=4

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
}

make_account() {
	local u g gcos

	u=$1
	g=$2
	gcos=$3

	if pw group show "${g}" >/dev/null 2>&1; then
		echo "You already have a group \"${g}\", so I will use it."
	else
		echo "You need a group \"${g}\"."
		if which -s pw && yesno "Would you like me to create it" y
		then
			pw groupadd ${g} || exit
			echo "Done."
		else
			echo "Please create it, and try again."
			exit 1
		fi
	fi
    
	if pw user show "${u}" >/dev/null 2>&1; then
		echo "You already have a user \"${u}\", so I will use it."
	else
		echo "You need a user \"${u}\"."
		if which -s pw && yesno "Would you like me to create it" y
		then
			pw useradd ${u} -g ${g} -c "${gcos}" -d /nonexistent -s /sbin/nologin -h - || exit
			echo "Done."
		else
			echo "Please create it, and try again."
			exit 1
		fi
	fi
}

case $2 in

PRE-INSTALL)
	make_account dovecot dovecot "Dovecot"
	;;

POST-INSTALL)
	base=/var/run/dovecot
	DIRLIST="${base} ${base}/login"
	echo "Fixing ownerships and modes in \"${base}\"."
	for directory in ${DIRLIST}; do
		if [ ! -d "${directory}" ]; then
			mkdir -p ${directory}
			echo "Created directory: ${directory}"
		fi
	done
	chown -R root:wheel   ${base}
	chmod -R 0700         ${base}
	chown -R root:dovecot ${base}/login
	chmod -R 0750         ${base}/login
	;;

esac