#!/bin/sh

EMAIL="Your CloudFlare E-mail address"
## uncomment next line if you using Global API Key
#API="Your Cloudflare API Key"
## comment next line if you using Global API Key
TOKEN="Your Cloudflare API Token with just enough permission"
ZONEID="Your zone id, hex16 string"
RECORDID="You DNS record ID, hex16 string"
RECORDNAME="Your DNS record name, e.g. sub.example.com"
RECORDTTL="Your DNS record TTL in second (1=auto, Must be between 120 and 2147483647)"
IP=${1}

if [ "$TOKEN" != "" ]; then
  AUTH_HEADER="Authorization: Bearer ${TOKEN}"
else
  AUTH_HEADER="X-Auth-Key: ${API}"
fi

RES=`curl -ks -X PUT "https://api.cloudflare.com/client/v4/zones/${ZONEID}/dns_records/${RECORDID}" \
     -H "X-Auth-Email: ${EMAIL}" \
     -H "${AUTH_HEADER}" \
     -H "X-Auth-Key: ${API}" \
     -H "Content-Type: application/json" \
     --data "{\"type\":\"A\",\"name\":\"${RECORDNAME}\",\"content\":\"${IP}\",\"ttl\":${RECORDTTL},\"proxied\":false}"`
# accroding to docs, it OK to remove ttl and proxied parameters
# https://api.cloudflare.com/#dns-records-for-a-zone-update-dns-record

echo $RES | grep '"success":\ *true' > /dev/null

if [ $? -eq 0 ]; then
  /sbin/ddns_custom_updated 1
else
  /sbin/ddns_custom_updated 0
fi