-

#!/bin/sh

TTL=60
DYNDNS_CACHE=/tmp/dyndns_cache

ip=$(nvram get wan_ipaddr)
dyndns_ip=$(cat $DYNDNS_CACHE 2>/dev/null)
hostname=$(nvram get wan_hostname)
domain=$(nvram get wan_domain)

if [ "x$ip" = "x$dyndns_ip" ]; then
  echo "ip address $ip has not changed"
else
  echo -n $ip > $DYNDNS_CACHE
  AWS_ACCESS_KEY_ID=$(nvram get aws_key_id) AWS_SECRET_ACCESS_KEY=$(nvram get aws_secret_key) cli53 rrcreate $domain $hostname A $ip --ttl $TTL --replace
fi