- Uploaded source

src/App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
+    </startup>
+</configuration>

src/Log.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+public static class Log
+{
+    public static void Info(object value)
+    {
+        Log.Color(ConsoleColor.Yellow);
+        Console.WriteLine("[!] " + value.ToString());
+        Log.Color();
+    }
+
+    public static void Critical(object value)
+    {
+        Log.Color(ConsoleColor.Cyan);
+        Console.WriteLine("[+] " + value.ToString());
+    }
+
+    public static void Error(object value)
+    {
+        Log.Color(ConsoleColor.Red);
+        Console.WriteLine("[-] " + value.ToString());
+        Log.Color();
+    }
+
+    public static void Fatal(object value)
+    {
+        Error(value);
+        Console.ReadLine();
+        Environment.Exit(-1);
+    }
+
+    private static void Color(ConsoleColor color = ConsoleColor.White) => Console.ForegroundColor = color;
+}

src/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UplayNameChecker
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Program.MainAsync().GetAwaiter().GetResult();
+        }
+
+        static async Task MainAsync()
+        {
+            if (!File.Exists("names.txt"))
+                Log.Fatal("names.txt not found.");
+
+            Log.Info("Reading names.txt...");
+            string[] namesToCheck;
+
+            try
+            {
+                namesToCheck = File.ReadAllLines("names.txt");
+            }
+            catch (Exception ex)
+            {
+                Log.Error("Could not read names.txt: " + ex.Message);
+                return;
+            }
+
+            R6dbAPI r6db = new R6dbAPI();
+
+            await Task.Delay(100);
+            Log.Info("Starting to check...\n");
+
+            foreach (var name in namesToCheck)
+            {
+                bool available = await r6db.IsNameAvailable(name);
+                Log.Critical($"{name} is  {(available ? "" : "not ")} available.");
+
+                if (available)
+                    File.AppendAllLines("availableNames.txt", new string[] { name });
+            }
+            Console.WriteLine();
+            Log.Info("Written results to availableNames.txt.");
+            Console.ReadLine();
+        }
+    }
+}

src/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("UplayNameChecker")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("UplayNameChecker")]
+[assembly: AssemblyCopyright("Copyright ©  2021")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("324bda05-3e1b-456c-8cd9-a364846db2cd")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

src/R6dbAPI.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UplayNameChecker
+{
+    public class R6dbAPI
+    {
+        private HttpClient httpClient = new HttpClient();
+        private const string URI = "https://api.statsdb.net/r6/namecheck/";
+
+        public async Task<bool> IsNameAvailable(string name)
+        {
+            try
+            {
+                var reqUri = URI + System.Net.WebUtility.UrlEncode(name);
+                var timestamp = GetCurrentTimestamp();
+                var apiKey = GenerateAuthToken(timestamp);
+
+                HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, reqUri);
+                request.Headers.Add("x-api-key", apiKey);
+                request.Headers.Add("origin", "https://r6db.net");
+
+                var response = await httpClient.SendAsync(request);
+                return (await response.Content.ReadAsStringAsync()).Contains("exists\":false");
+            }
+            catch (Exception ex)
+            {
+                Log.Error($"Could not check name {name}: {ex.Message}");
+                return false;
+            }
+        }
+
+        public string GenerateAuthToken(ulong timestamp)
+        {
+            var seed = "a3d6b18fa919072d65d890c47b336f1f78fc11c4";
+            var sTimestamp = timestamp.ToString();
+            var code = "";
+
+            for(int i = 0; i < sTimestamp.Length; i++)
+            {
+                var t = int.Parse(sTimestamp[i].ToString());
+                var c = (int)seed[i % seed.Length];
+                switch (t)
+                {
+                    case 0: break;
+                    case 1:
+                        c = c - 1;
+                        break;
+                        case 2:
+                        c = c >> 1;
+                        break;
+                    case 3:
+                        c = c << 1;
+                        break;
+                    case 4:
+                        c = (int)Math.Pow(t, c % 4);
+                        break;
+                    case 5:
+                        c = (int)Math.Round(Math.Sqrt(c));
+                        break;
+                    case 6:
+                        c = c << t;
+                        goto case 7;
+                    case 7:
+                        c = c - 12;
+                        break;
+                    case 8:
+                        c = 0;
+                        break;
+                    default:
+                        c = -69420;
+                        break;
+                }
+                if (c == -69420) continue;
+                code += c.ToString();
+            }
+            var str2 = "authscript:" + code + ":" + timestamp + $":{GetTodaysTimestamp()}";
+            return Convert.ToBase64String(Encoding.UTF8.GetBytes(str2));
+        }
+
+        private ulong GetCurrentTimestamp()
+        {
+            return (ulong)DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1)).TotalSeconds;
+        }
+
+        private ulong GetTodaysTimestamp()
+        {
+            return (ulong)DateTime.Today.Subtract(new DateTime(1970, 1, 1)).TotalSeconds;
+        }
+    }
+}

src/UplayNameChecker.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{324BDA05-3E1B-456C-8CD9-A364846DB2CD}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>UplayNameChecker</RootNamespace>
+    <AssemblyName>UplayNameChecker</AssemblyName>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Log.cs" />
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="R6dbAPI.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>