WHOIS Rust

This is a WHOIS client library for Rust, inspired by https://github.com/hjr265/node-whois

Usage

You can make a servers.json file or copy one from https://github.com/hjr265/node-whois

This is a simple example of servers.json.

{
    "org": "whois.pir.org",
    "": "whois.ripe.net",
    "_": {
        "ip": {
            "host": "whois.arin.net",
            "query": "n + $addr\r\n"
        }
    }
}

Then, use the from_path (or from_string if your JSON data is in-memory) associated function to create a WhoIs instance.

use whois_rust::WhoIs;

let whois = WhoIs::from_path("/path/to/servers.json").unwrap();

Use the lookup method and input a WhoIsLookupOptions instance to lookup a domain or an IP.

use whois_rust::{WhoIs, WhoIsLookupOptions};

let whois = WhoIs::from_path("/path/to/servers.json").unwrap();

let result: String = whois.lookup(WhoIsLookupOptions::from_string("magiclen.org").unwrap()).unwrap();

The lookup method decodes the WHOIS response into a String. When the response is not valid UTF-8, it is decoded using the charset feature (enabled by default). If you need the exact bytes instead, use the lookup_raw method, which returns a Vec<u8>.

A lookup follows the referral of a response up to follow times (2 by default). Each connection has its own timeout budget (60 seconds by default), so a lookup can take up to follow + 1 times that value, and it accepts up to max_response_size bytes (4 MiB by default) instead of letting a broken or malicious server exhaust the memory. All of them can be changed through WhoIsLookupOptions.

This crate implements the WHOIS protocol as specified in RFC 3912: a request is a single line terminated with CRLF sent to TCP port 43, and the response is over when the server closes the connection. WHOIS has no authentication and no encryption, and no way to tell the character encoding of a response, which is why this crate has to guess it.

Asynchronous APIs

You may want to use async APIs with your async runtime. This crate supports tokio, currently.

[dependencies.whois-rust]
version = "*"
features = ["tokio"]

After enabling the async feature, the from_path_async function and the lookup_async function are available.

Finding a WHOIS Server via DNS

The can_find_server_for_tld method looks a WHOIS server up through the _nicname._tcp SRV records of a TLD. It needs a DNS client, so it is put behind the srv feature, which is disabled by default.

[dependencies.whois-rust]
version = "*"
features = ["srv"]

The can_find_server_for_tld_async function is available when the tokio feature is enabled as well. The blocking can_find_server_for_tld method runs its DNS query on a thread of its own, so it works from inside an async runtime too, but the async function is the one to use there.

Testing

# git clone --recurse-submodules https://github.com/magiclen/whois-rust.git

git clone https://github.com/magiclen/whois-rust.git

cd whois-rust

git submodule init
git submodule update --recursive

cargo test

Crates.io

https://crates.io/crates/whois-rust

Documentation

https://docs.rs/whois-rust

License

MIT

whois-rust 3.1.0