# DDNS

This application enables automatically updating DNS records for various providers.

## Features

* Automatically detect the current IP.
    * Both IPv4 and IPv6 are supported.
    * IP resolution depends on the selected service.
        * ipify (default)
* Update DNS records in the selected provider.
    * Porkbun
* Native (Linux)

## Build

Execute `./gradlew assemble`.  
The resulting binary will be located in `./build/bin/releaseExecutable/`.

Removing the extension from the binary and adding it to `/usr/local/bin/` enables the use of `ddns` in the terminal.

## Usage

The following command updates all A and AAAA DNS records in Porkbun for `example.com` and `test.example.com`.

```
ddns porkbun \ 
    --key=... \
    --secret-key=... \
    --domain=example.com \
    --subdomain= \
    --subdomain=test
```

Optionally, a file can be used to declare one or more configurations.  
The above example can be declared as follows.

```
porkbun
key=...
secret-key=...
domain=example.com
subdomain=
subdomain=test
```

To use this config file, execute the command `ddns --config=...`.
By default, the config file is `/etc/ddns.conf`.

This process can be automated using systemd or cron.