mirror of
https://github.com/MCCTeam/Minecraft-Console-Client
synced 2025-10-14 21:22:49 +00:00
283 lines
12 KiB
C#
283 lines
12 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using MinecraftClient.Protocol.Handlers;
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using MinecraftClient.Proxy;
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using System.Net.Sockets;
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using System.Net.Security;
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namespace MinecraftClient.Protocol
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{
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/// <summary>
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/// Handle login, session, server ping and provide a protocol handler for interacting with a minecraft server.
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/// </summary>
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public static class ProtocolHandler
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{
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/// <summary>
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/// Retrieve information about a Minecraft server
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/// </summary>
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/// <param name="serverIP">Server IP to ping</param>
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/// <param name="serverPort">Server Port to ping</param>
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/// <param name="protocolversion">Will contain protocol version, if ping successful</param>
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/// <returns>TRUE if ping was successful</returns>
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public static bool GetServerInfo(string serverIP, ushort serverPort, ref int protocolversion)
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{
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try
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{
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if (Protocol16Handler.doPing(serverIP, serverPort, ref protocolversion))
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{
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return true;
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}
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else if (Protocol17Handler.doPing(serverIP, serverPort, ref protocolversion))
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{
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return true;
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}
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else
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{
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ConsoleIO.WriteLineFormatted("§8Unexpected answer from the server (is that a Minecraft server ?)");
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return false;
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}
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}
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catch
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{
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ConsoleIO.WriteLineFormatted("§8An error occured while attempting to connect to this IP.");
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return false;
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}
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}
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/// <summary>
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/// Get a protocol handler for the specified Minecraft version
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/// </summary>
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/// <param name="Client">Tcp Client connected to the server</param>
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/// <param name="ProtocolVersion">Protocol version to handle</param>
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/// <param name="Handler">Handler with the appropriate callbacks</param>
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/// <returns></returns>
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public static IMinecraftCom getProtocolHandler(TcpClient Client, int ProtocolVersion, IMinecraftComHandler Handler)
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{
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int[] supportedVersions_Protocol16 = { 51, 60, 61, 72, 73, 74, 78 };
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if (Array.IndexOf(supportedVersions_Protocol16, ProtocolVersion) > -1)
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return new Protocol16Handler(Client, ProtocolVersion, Handler);
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int[] supportedVersions_Protocol17 = { 4, 5 };
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if (Array.IndexOf(supportedVersions_Protocol17, ProtocolVersion) > -1)
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return new Protocol17Handler(Client, ProtocolVersion, Handler);
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int[] supportedVersions_Protocol18 = { 47 };
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if (Array.IndexOf(supportedVersions_Protocol18, ProtocolVersion) > -1)
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return new Protocol18Handler(Client, ProtocolVersion, Handler);
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throw new NotSupportedException("The protocol version no." + ProtocolVersion + " is not supported.");
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}
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/// <summary>
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/// Convert a human-readable Minecraft version number to network protocol version number
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/// </summary>
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/// <param name="MCVersion">The Minecraft version number</param>
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/// <returns>The protocol version number or 0 if could not determine protocol version: error, unknown, not supported</returns>
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public static int MCVer2ProtocolVersion(string MCVersion)
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{
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if (MCVersion.Contains('.'))
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{
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switch (MCVersion.Split(' ')[0].Trim())
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{
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case "1.4.6":
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case "1.4.7":
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return 51;
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case "1.5.1":
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return 60;
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case "1.5.2":
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return 61;
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case "1.6.0":
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return 72;
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case "1.6.1":
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case "1.6.2":
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case "1.6.3":
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case "1.6.4":
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return 73;
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case "1.7.2":
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case "1.7.3":
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case "1.7.4":
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case "1.7.5":
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return 4;
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case "1.7.6":
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case "1.7.7":
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case "1.7.8":
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case "1.7.9":
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case "1.7.10":
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return 5;
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case "1.8.0":
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return 47;
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default:
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return 0;
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}
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}
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else
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{
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try
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{
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return Int32.Parse(MCVersion);
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}
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catch
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{
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return -1;
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}
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}
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}
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public enum LoginResult { OtherError, ServiceUnavailable, SSLError, Success, WrongPassword, AccountMigrated, NotPremium };
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/// <summary>
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/// Allows to login to a premium Minecraft account using the Yggdrasil authentication scheme.
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/// </summary>
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/// <param name="user">Login</param>
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/// <param name="pass">Password</param>
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/// <param name="accesstoken">Will contain the access token returned by Minecraft.net, if the login is successful</param>
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/// <param name="uuid">Will contain the player's UUID, needed for multiplayer</param>
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/// <returns>Returns the status of the login (Success, Failure, etc.)</returns>
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public static LoginResult GetLogin(ref string user, string pass, ref string accesstoken, ref string uuid)
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{
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try
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{
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string result = "";
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string json_request = "{\"agent\": { \"name\": \"Minecraft\", \"version\": 1 }, \"username\": \"" + jsonEncode(user) + "\", \"password\": \"" + jsonEncode(pass) + "\" }";
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int code = doHTTPSPost("authserver.mojang.com", "/authenticate", json_request, ref result);
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if (code == 200)
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{
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if (result.Contains("availableProfiles\":[]}"))
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{
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return LoginResult.NotPremium;
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}
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else
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{
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string[] temp = result.Split(new string[] { "accessToken\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { accesstoken = temp[1].Split('"')[0]; }
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temp = result.Split(new string[] { "name\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { user = temp[1].Split('"')[0]; }
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temp = result.Split(new string[] { "availableProfiles\":[{\"id\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { uuid = temp[1].Split('"')[0]; }
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return LoginResult.Success;
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}
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}
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else if (code == 403)
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{
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if (result.Contains("UserMigratedException"))
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{
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return LoginResult.AccountMigrated;
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}
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else return LoginResult.WrongPassword;
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}
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else if (code == 503)
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{
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return LoginResult.ServiceUnavailable;
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}
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else
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{
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ConsoleIO.WriteLineFormatted("§8Got error code from server: " + code);
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return LoginResult.OtherError;
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}
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}
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catch (System.Security.Authentication.AuthenticationException)
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{
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return LoginResult.SSLError;
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}
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catch (System.IO.IOException e)
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{
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if (e.Message.Contains("authentication"))
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{
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return LoginResult.SSLError;
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}
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else return LoginResult.OtherError;
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}
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catch
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{
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return LoginResult.OtherError;
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}
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}
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/// <summary>
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/// Check session using Mojang's Yggdrasil authentication scheme. Allows to join an online-mode server
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/// </summary>
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/// <param name="user">Username</param>
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/// <param name="accesstoken">Session ID</param>
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/// <param name="serverhash">Server ID</param>
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/// <returns>TRUE if session was successfully checked</returns>
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public static bool SessionCheck(string uuid, string accesstoken, string serverhash)
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{
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try
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{
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string result = "";
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string json_request = "{\"accessToken\":\"" + accesstoken + "\",\"selectedProfile\":\"" + uuid + "\",\"serverId\":\"" + serverhash + "\"}";
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int code = doHTTPSPost("sessionserver.mojang.com", "/session/minecraft/join", json_request, ref result);
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return (result == "");
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}
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catch { return false; }
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}
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/// <summary>
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/// Manual HTTPS request since we must directly use a TcpClient because of the proxy.
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/// This method connects to the server, enables SSL, do the request and read the response.
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/// </summary>
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/// <param name="host">Host to connect to</param>
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/// <param name="endpoint">Endpoint for making the request</param>
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/// <param name="request">Request payload</param>
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/// <param name="result">Request result</param>
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/// <returns>HTTP Status code</returns>
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private static int doHTTPSPost(string host, string endpoint, string request, ref string result)
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{
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TcpClient client = ProxyHandler.newTcpClient(host, 443);
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SslStream stream = new SslStream(client.GetStream());
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stream.AuthenticateAsClient(host);
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List<String> http_request = new List<string>();
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http_request.Add("POST " + endpoint + " HTTP/1.1");
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http_request.Add("Host: " + host);
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http_request.Add("User-Agent: MCC/" + Program.Version);
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http_request.Add("Content-Type: application/json");
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http_request.Add("Content-Length: " + Encoding.ASCII.GetBytes(request).Length);
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http_request.Add("Connection: close");
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http_request.Add("");
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http_request.Add(request);
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stream.Write(Encoding.ASCII.GetBytes(String.Join("\r\n", http_request.ToArray())));
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System.IO.StreamReader sr = new System.IO.StreamReader(stream);
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string raw_result = sr.ReadToEnd();
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if (raw_result.StartsWith("HTTP/1.1"))
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{
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result = raw_result.Substring(raw_result.IndexOf("\r\n\r\n") + 4);
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return Settings.str2int(raw_result.Split(' ')[1]);
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}
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else return 520; //Web server is returning an unknown error
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}
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/// <summary>
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/// Encode a string to a json string.
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/// Will convert special chars to \u0000 unicode escape sequences.
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/// </summary>
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/// <param name="text">Source text</param>
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/// <returns>Encoded text</returns>
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private static string jsonEncode(string text)
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{
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StringBuilder result = new StringBuilder();
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foreach (char c in text)
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{
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if (char.IsLetterOrDigit(c))
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{
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result.Append(c);
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}
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else
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{
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result.Append("\\u");
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result.Append(((int)c).ToString("x4"));
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}
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}
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return result.ToString();
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}
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}
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}
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