do_dyndnsclient/cloudflare.sh

#!/bin/sh
echo `date "+%Y-%m-%d %H:%M:%S"`
ip_file="ip.txt"

new_ip=$(curl -s http://ipecho.net/plain)

if [ -f $ip_file ]; then
    ip=$(cat $ip_file)
    if [ $ip == $new_ip ]; then
		echo "Same ip: $ip"
        exit 0
    fi
fi

ip="$new_ip"
	zone_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=$ZONE" -H "X-Auth-Email: $EMAIL" -H "X-Auth-Key: $API" -H "Content-Type: application/json" | perl -nle'print $& if m{(?<="id":")[^"]*}' | head -1 )
record_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records?name=$ZONE" -H "X-Auth-Email: $EMAIL" -H "X-Auth-Key: $API" -H "Content-Type: application/json"  | perl -nle'print $& if m{(?<="id":")[^"]*}')
update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records/$record_id" -H "X-Auth-Email: $EMAIL" -H "X-Auth-Key: $API" -H "Content-Type: application/json" --data "{\"id\":\"$zone_id\",\"type\":\"A\",\"name\":\"$ZONE\",\"content\":\"$ip\",\"ttl\":$TTL,\"proxied\":$PROXY}")

if [[ ${update} == *"\"success\":false"* ]]; then
	echo "API UPDATE FAILED. DUMPING RESULTS:\\n$update"
	exit 1
else
	echo "IP changed to: $ip"	
    echo "$ip" > $ip_file
fi