dnsimple_update.bash

#!/bin/bash

declare API
API="https://api.dnsimple.com/v2"

declare _zone
_zone="$1"
declare _record
_record="$2"
declare _ip
_ip="$3"

if [[ -z "$DNSIMPLE_ACCOUNT_TOKEN" ]] ; then
  echo "You must create a 'User access token' on your dnsimple.com User Settings page."
  echo "The new ACCOUNT token must be defined as \$DNSIMPLE_ACCOUNT_TOKEN in your environment."
  exit 1
fi

if ! command -v jq >&/dev/null ; then
  echo "You need to have 'jq' installed and in your $PATH."
  echo "https://stedolan.github.io/jq/"
  exit 1
fi

if [[ -z "$_zone" ]] ; then
  echo "Specify which zone (domain name) you want to use."
  exit 1
fi

if [[ -z "$_record" ]] ; then
  echo "Specify which hostname you want to create/update."
  exit 1
fi

if [[ -z "$_ip" ]] ; then
  _ip=$(dig +short myip.opendns.com @resolver1.opendns.com || curl -f4L http://ifconfig.me/ || curl -f4L http://icanhazip.com/)
fi

if [[ -z "$_ip" ]] ; then
  echo "No IP to use has been defined, setting it automatically doesn't work right now."
  exit 1
fi

dnsimple_api() {
  local _resource="$1"

  curl -sS \
    -H "Authorization: Bearer ${DNSIMPLE_ACCOUNT_TOKEN}" \
    -H 'Accept: application/json' \
    "${API}/${_resource}?per_page=100&page=1"

}

dnsimple_api_payload() {
  local _resource="$1"
  local _method="$2"
  local _json="$3"

  curl -sS \
    -H "Authorization: Bearer ${DNSIMPLE_ACCOUNT_TOKEN}" \
    -H 'Accept: application/json' \
    -H "Content-Type: application/json" \
    -X "${_method}" \
    -d "${_json}" \
    "${API}/${_resource}"
}

if [[ -z "$DNSIMPLE_ACCOUNT_ID" ]] ; then
  DNSIMPLE_ACCOUNT_ID=$(dnsimple_api "whoami" | jq '.data.account.id')
  export DNSIMPLE_ACCOUNT_ID
fi

zones() {
  dnsimple_api "${DNSIMPLE_ACCOUNT_ID}/domains" | jq '.'
}

zone_info() {
  dnsimple_api "${DNSIMPLE_ACCOUNT_ID}/zones/${_zone}" | jq '.'
}

zone_records() {
  dnsimple_api "${DNSIMPLE_ACCOUNT_ID}/zones/${_zone}/records" | jq '.'
}

zone_record_id() {
  dnsimple_api "${DNSIMPLE_ACCOUNT_ID}/zones/${_zone}/records" | jq ".data[] | select(.name == \"${_record}\").id"
}

declare _id
_id=$(zone_record_id)

send_zone_record() {
  local _method="$1"
  dnsimple_api_payload "${DNSIMPLE_ACCOUNT_ID}/zones/${_zone}/records" "${_method}" "{\"name\":\"${_record}\",\"type\":\"A\",\"content\":\"${_ip}\"}" | jq '.'
}

if [[ -z "$_id" ]] ; then
  send_zone_record POST
else
  send_zone_record PATCH
fi