Cloudflare DNS and Caddy Configuration Script

1. Installation and Setup

You're right, using git clone is a better approach. Here's the revised installation section:

1. Installation and Setup

• Install Python 3.x and required libraries: yaml, requests, loguru, python-dotenv:

pip install pyyaml requests loguru python-dotenv

• Obtain Cloudflare API token from your account

• Clone the repository and set up the script:

git clone https://sij.ai/sij/cf.git
cd cf
sudo ln -s "$(pwd)/cf.py" /usr/local/bin/cf
sudo chmod +x cf.py

• Create .env file with CLOUDFLARE_API_TOKEN=your_token_here:

echo "CLOUDFLARE_API_TOKEN=your_token_here" > .env

• Set up cf_domains.yaml with your domains and zone IDs:

cp cf_domains.yaml-example cf_domains.yaml
nano cf_domains.yaml

Edit the cf_domains.yaml file to include your domains, zone IDs, and DNS record IDs. The file structure should look like this:

domain1.com:
  '@': your_root_domain1.com_dns_record_id_here
  _id: your_domain1.com_zone_id_here
  sub1: your_sub1.domain1.com_dns_record_id_here
  sub2: your_sub2.domain1.com_dns_record_id_here
domain2.net:
  '@': your_root_domain2.net_dns_record_id_here
  _id: your_domain2.net_zone_id_here
  sub1: sub1.domain2.net_dns_record_id_here
  sub2: sub2.domain2.net_dns_record_id_here

Replace the example values with your actual Cloudflare zone IDs and DNS record IDs for each domain and subdomain you want to manage with this script.

• Ensure Caddy is installed and /etc/caddy/Caddyfile is writable:

sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
sudo apt update
sudo apt install caddy
sudo chown caddy:caddy /etc/caddy/Caddyfile
sudo chmod 644 /etc/caddy/Caddyfile

2. Usage

2.1 DDNS Update

cf ddns [--force]

Updates all domains with current IP. Use --force to update regardless of IP change.

2.2 Adding/Updating Domain Configuration

cf <full-domain> [--ip <ip address>] --port <port>

Adds or updates domain in Cloudflare and Caddyfile. Default IP is localhost.

2.3 Updating All Domains

cf all [--force]

Updates all domains and Caddyfile configurations.

3. File and Environment Structure

• Caddyfile: Caddy server configuration
• cf_domains.yaml: Stores domain info and DNS record IDs
• .env: Contains CLOUDFLARE_API_TOKEN and CURRENT_IP
• cf_script.log: Logs script actions

4. Key Functions and Error Handling

• ddns(): Handles DDNS updates
• update_caddyfile(): Modifies Caddy configuration
• update_or_create_record(): Manages Cloudflare DNS records

Common errors:

• API authentication failures: Check API token
• Permission issues: Run with sudo for Caddyfile changes
• Domain not found: Ensure domain is in cf_domains.yaml

Logs are in cf_script.log for troubleshooting.