A DNSimple DDNS updater for DD-WRT

dnsimpleupdate

#!/bin/sh

EMAIL=
API_TOKEN=
DOMAIN_ID=
RECORD_ID=
IP=$( nvram get wan_ipaddr )
OUTPUT='-s -o /dev/null'

usage()
{
  cat << EOF
usage: $(basename $0) -e EMAIL -t APITOKEN -d DOMAINID -r RECORDID

OPTIONS:
  -v    Be verbose
  -h    Show this message
EOF
}

while getopts "he:t:d:r:v" OPTION
do
  case $OPTION in
    h)
      usage
      exit 1
      ;;
    e)
      EMAIL=$OPTARG
      ;;
    t)
      API_TOKEN=$OPTARG
      ;;
    d)
      DOMAIN_ID=$OPTARG
      ;;
    r)
      RECORD_ID=$OPTARG
      ;;
    v)
      OUTPUT='-s -i -v -o /dev/stderr'
      ;;
    ?)
      usage
      exit 1
      ;;
  esac
done

if [[ -z $EMAIL ]] || [[ -z $API_TOKEN ]] || [[ -z $DOMAIN_ID ]] || [[ -z $RECORD_ID ]]
then
  usage
  exit 1
fi

echo "Updating with IP: $IP"

RESULT=$(curl -H "Accept: application/json" \
     -H "X-DNSimple-Token: $EMAIL:$API_TOKEN" \
     -H "Content-Type: application/json" \
     -X PUT https://DNSimple.com/domains/$DOMAIN_ID/records/$RECORD_ID.json \
     -d "{\"record\":{\"content\":\"$IP\"}}" \
     -k \
     -w "%{http_code}" \
     $OUTPUT)

if [ "$RESULT" = "200" ]; then
  exit 0
else
  exit 1
fi

Hey this looks really good. Do you just go into the administration tab, go to commands, and save as a startup script?