[update digital ocean firewall] update digital ocean firewall rules to add current ip and remove old external ips

updatefw.sh

# Requires doctl and the "public-ip-cli" npm module to be globally installed.

#!/bin/sh
FWID="YOUR_FIREWALL_ID"
IPV4=$("${HOME}/.nodebrew/current/bin/public-ip" --4)
#IPV6=$("${HOME}/.nodebrew/current/bin/public-ip" --6)

printf "🔥 Updating DO firewall rules\n\n"

OLD_RULES="$(doctl compute firewall get "${FWID}" --format InboundRules | tr ' ' '\n' | grep -E 'ports:22|ports:2022' | tr '\n' ' ' | sed '$ s/.$//')"

if [ "${OLD_RULES}" = "\"\"" ]; then
	printf "No rules to remove.\n\n"
else
	printf "Removing %s\n\n" "${OLD_RULES}"
	REMOVE="doctl compute firewall remove-rules ${FWID} --inbound-rules=${OLD_RULES} -v"
	# echo "${REMOVE}"
	eval "${REMOVE}"
fi

# NEW_RULES="\"protocol:tcp,ports:22,address:${IPV4},address:${IPV6}
# 	protocol:udp,ports:60000-61000,address:${IPV4},address:${IPV6}\""

NEW_RULES="\"protocol:tcp,ports:22,address:${IPV4} protocol:udp,ports:60000-61000,address:${IPV4}\""
printf "Adding %s\n\n" "${NEW_RULES}"
ADD="doctl compute firewall add-rules ${FWID} --inbound-rules=${NEW_RULES} -v"
# echo "${ADD}"
eval "${ADD}"

printf "🏁 Done."