DNS verification hook for acmetool using cloudflare API.

Usage

Download dns.hook to your server. Install dependencies:

• python3 & request package
• dig (usually available in the dnsutils apt package)

Allow only yourself to read/write/execute it:

$ chmod 700 dns.hook

Edit dns.hook script. Put your API_TOKEN in the following line and uncomment that:

import requests
import signal
import subprocess
import sys
import time

#KEY = "Your API TOKEN" 

TIMEOUT = 60

Test run:

$ ./dns.hook test [sub.yourdomain.tld]

The script will try to create a TXT record _acme-challenge.[sub.yourdomain.tld], verify it, and delete it.

If it works, copy/move the script to acmetool hooks dir (e.g. /usr/lib/acme/hooks/):

$ sudo mv dns.hook /usr/lib/acme/hooks/

After that, acmetool will find this hook, and it can proceed with dns challange method...