Python Script for Updating Cloudflare IPs in Nginx Configuration

update_cloudflare_ips.py

import requests
import os

def fetch_cloudflare_ips():
    url = "https://www.cloudflare.com/ips-v4/"
    response = requests.get(url)
    if response.status_code == 200:
        return response.text.strip().split("\n")
    else:
        raise Exception(f"Failed to fetch Cloudflare IPs: {response.status_code}")

def update_cloudflare_ips_file(ips):
    config_dir = "/etc/nginx/conf.d/"
    config_path = os.path.join(config_dir, "cloudflare_ips.conf")
    
    os.makedirs(config_dir, exist_ok=True)

    with open(config_path, "w") as file:
        file.write("# Cloudflare IP ranges\n")
        for ip in ips:
            file.write(f"set_real_ip_from {ip};\n")
        file.write("real_ip_header CF-Connecting-IP;\n")
    print(f"Cloudflare IPs updated in {config_path}")

def main():
    try:
        ips = fetch_cloudflare_ips()
        update_cloudflare_ips_file(ips)
    except Exception as e:
        print(e)

if __name__ == "__main__":
    main()