PREUN

/bin/sh

systemctl disable check_mk_agent.socket
systemctl restart sockets.target

POSTIN

/bin/sh

if [ $1 == 1 ]; then
	mkdir -p /etc/systemd/system/check_mk_agent.socket.d
	if ! [ -f "/etc/systemd/system/check_mk_agent.socket.d/bind.conf" ]; then
		cat > /etc/systemd/system/check_mk_agent.socket.d/bind.conf <<'EOF'
[Socket]
BindToDevice=lo
# remove this file to bind to all interfaces, but make sure you set up the firewall properly
EOF
	fi
	systemctl enable check_mk_agent.socket
	systemctl restart sockets.target
fi

POSTUN

/bin/sh

if [ $1 == 0 ]; then
	rm -f /etc/systemd/system/check_mk_agent.socket.d/bind.conf
	rmdir /etc/systemd/system/check_mk_agent.socket.d 2>/dev/null
fi