whois_cli.csx

readme.md

whois_cli

Implementation of whois writen on dotnet-scripts

Make sure you have installed dotnet tool for running .csx extensions

• Try in cli:

dotnet script https://gist.githubusercontent.com/h4r7w3l1/23fcca5f7b21ed3709d8e138966ffdf3/raw/6df94156a4a2d91f6d81b59615717f3444341539/whois_cli.csx "yandex.ru" "rambler.ru" "notreallyexistedfuckingdomain.com"

whois_cli.csx

#!/usr/bin/env dotnet-script
using System;
using System.IO;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

Parallel.ForEach(Args, (domain) =>
{
    string normalizedDomain = domain.ToLower().Any(v => !"abcdefghijklmnopqrstuvdxyz0123456789.-".Contains(v))
        ? new System.Globalization.IdnMapping().GetAscii(domain)
        : domain;

    string[] domainTld = domain.Split('.');
    if (domainTld.Length < 2)
    {
        Console.WriteLine("Invalid domain format");
        return;
    }

    string whoisServer = $"{domainTld[1]}.whois-servers.net";
    string result = string.Empty;

    using (TcpClient tcpClient = new TcpClient())
    {
        try
        {
            tcpClient.Connect(whoisServer.Trim(), 43);
            byte[] domainQueryBytes = Encoding.ASCII.GetBytes(normalizedDomain + "\r\n");

            using (Stream stream = tcpClient.GetStream())
            {
                stream.Write(domainQueryBytes, 0, domainQueryBytes.Length);

                using StreamReader sr = new StreamReader(tcpClient.GetStream(), Encoding.UTF8);
                StringBuilder stringBuilder = new StringBuilder();
                string row;

                while ((row = sr.ReadLine()) != null)
                {
                    if (row.StartsWith("#") || row.StartsWith("%") || string.IsNullOrWhiteSpace(row.Trim()))
                    {
                        continue;
                    }

                    if (row.StartsWith(">>>") || row.StartsWith("Last updated on"))
                    {
                        break;
                    }

                    stringBuilder.AppendLine(row.Trim());
                }

                result = stringBuilder.ToString();
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(">> Whois: " + domain + "\nError: " + ex.Message);
            return;
        }
    }
    Console.WriteLine(">> Whois: " + domain + "\n" + result);
});