Finger server written in Rust.

Features:
- [x] Config file support for users and their info
- [x] Support for multiple users
- [x] Support dynamic content in templates (e.g. fetch from an API)

The project is intentionally lightweight:
- Small dependency set (`ureq` + `serde_json`)
- Fast startup
- Minimal CLI argument parser using `std::env`

## Build

```bash
cargo build
```

## Test

```bash
cargo test
```

## Run as CLI

```bash
# List known users from ./users
cargo run -- --list

# Render one user profile
cargo run -- bob
```

## Run as finger-like TCP server

```bash
# Listen on 127.0.0.1:7979 by default
cargo run -- --serve

# Custom bind and users directory
cargo run -- --serve --bind 0.0.0.0:7979 --users-dir ./users
```

You can query the server with tools like `nc`:

```bash
printf 'bob\n' | nc 127.0.0.1 7979
```

## Config Format

Each `.config` file under `users/` is plain text.

- The `Login:` field is used to identify the user.
- If `Login:` is missing, the filename stem is used.
- Dynamic template tokens are supported:
	- `{{url https://example.com}}`
	- `{{json_url https://example.com/data.json field_name}}`

If dynamic fetches fail, the token is replaced with `[unavailable]`.