# Dynamic IP Updater with Cloudflare DNS

This project is a dynamic IP updater for Cloudflare DNS records. It listens for changes in the IPv4 address of the network interface and updates the DNS records in Cloudflare accordingly.

## Features

- Automatically detects changes in the public IP address.
- Updates Cloudflare DNS records when the public IP changes.
- Listens for network interface events to detect IP changes.
- Handles errors and retries updates to Cloudflare.

## Prerequisites

- Rust and Cargo installed.
- Cloudflare account with API token.
- Network interface with dynamic IP address.

## Installation

1. **Clone the repository:**

    ```sh
    git clone https://github.com/yourusername/dynip-cloudflare.git
    cd dynip-cloudflare
    ```

2. **Build the project:**

    ```sh
    cargo build --release
    ```

3. **Create configuration file:**

    Create a `config.toml` file in the current directory or in the configuration directory (typically `~/.config/dynip-cloudflare/`) with the following content:

    ```toml
    zone_id = "your_zone_id"
    api_key = "your_api_key"
    domains = ["example.com", "sub.example.com"]
    max_errors_in_row = 5
    ```

## Usage

1. **Run the program:**

    ```sh
    ./target/release/dynip-cloudflare
    ```

2. **Logging:**

    The program logs to both stderr and a rotating file located in the `logs` directory. The log level is set to `Info`.

## Configuration

### `config.toml`

- `zone_id`: The Zone ID of your Cloudflare domain.
- `api_key`: The API key for your Cloudflare account.
- `domains`: A list of domain names to update.
- `max_errors_in_row`: Maximum number of consecutive errors before the program stops. Will be set to 10 as default

### Example

```toml
zone_id = "your_zone_id"
api_key = "your_api_key"
domains = ["example.com", "sub.example.com"]
max_errors_in_row = 5 
```

## Error Handling

The program handles errors gracefully, with retries and logging of error messages. If the number of consecutive errors exceeds `max_errors_in_row`, the program will stop.

## License

This project is licensed under the BSD 2-Clause License.