#!/bin/sh
set -e

enable_talk() {
	update-inetd --pattern '[ \t]/usr/sbin/in\.talkd' --enable talk
	update-inetd --pattern '[ \t]/usr/sbin/in\.ntalkd' --enable ntalk
}

remove_talk() {
	update-inetd --remove "$talkp"
	update-inetd --remove "$ntalkp"
}

talkp='talk[ \t].*[ \t]/usr/sbin/in.talkd'
ntalkp='ntalk[ \t].*[ \t]/usr/sbin/in.ntalkd'

case "$1" in
abort-upgrade | abort-deconfigure | abort-remove)
	enable_talk
	;;
configure)
	if [ -n "$2" ] && dpkg --compare-versions "$2" ge 0.16-1; then
		enable_talk
	else
		talk_entry="talk		dgram	udp	wait	nobody.tty	/usr/sbin/in.talkd	in.talkd"
		ntalk_entry="ntalk		dgram	udp	wait	nobody.tty	/usr/sbin/in.ntalkd	in.ntalkd"
		if grep "$talkp" /etc/inetd.conf | grep -q '^#'; then
			talk_entry=\#$talk_entry
		fi
		if grep "$ntalkp" /etc/inetd.conf | grep -q '^#'; then
			ntalk_entry=\#$ntalk_entry
		fi
		remove_talk
		if
			[ -n "${talk_entry###*}" ] &&
			grep -q ^talk /etc/inetd.conf
		then
			talk_entry=\#$talk_entry
		fi
		if
			[ -n "${ntalk_entry###*}" ] &&
			grep -q ^ntalk /etc/inetd.conf
		then
			ntalk_entry=\#$ntalk_entry
		fi
		update-inetd --group BSD --add "$talk_entry"
		update-inetd --group BSD --add "$ntalk_entry"
	fi
	;;
*)
	echo "$0: incorrect arguments: $*" >&2
	exit 1
	;;
esac