mirror of
https://github.com/MCCTeam/Minecraft-Console-Client
synced 2025-10-14 21:22:49 +00:00
b1a66791a1
While there are protocol changes to the keep alive packet, the way MCC implements it should mean that the changes do not affect us.
513 lines
23 KiB
C#
513 lines
23 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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using MinecraftClient.Protocol.Handlers.Forge;
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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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/// Perform a DNS lookup for a Minecraft Service using the specified domain name
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/// </summary>
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/// <param name="domain">Input domain name, updated with target host if any, else left untouched</param>
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/// <param name="port">Updated with target port if any, else left untouched</param>
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/// <returns>TRUE if a Minecraft Service was found.</returns>
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public static bool MinecraftServiceLookup(ref string domain, ref ushort port)
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{
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if (!String.IsNullOrEmpty(domain) && domain.Any(c => char.IsLetter(c)))
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{
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try
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{
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Console.WriteLine("Resolving {0}...", domain);
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Heijden.DNS.Response response = new Heijden.DNS.Resolver().Query("_minecraft._tcp." + domain, Heijden.DNS.QType.SRV);
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Heijden.DNS.RecordSRV[] srvRecords = response.RecordsSRV;
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if (srvRecords != null && srvRecords.Any())
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{
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//Order SRV records by priority and weight, then randomly
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Heijden.DNS.RecordSRV result = srvRecords
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.OrderBy(record => record.PRIORITY)
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.ThenByDescending(record => record.WEIGHT)
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.ThenBy(record => Guid.NewGuid())
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.First();
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string target = result.TARGET.Trim('.');
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ConsoleIO.WriteLineFormatted(String.Format("§8Found server {0}:{1} for domain {2}", target, result.PORT, domain));
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domain = target;
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port = result.PORT;
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return true;
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}
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}
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catch (Exception e)
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{
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ConsoleIO.WriteLineFormatted(String.Format("§8Failed to perform SRV lookup for {0}\n{1}: {2}", domain, e.GetType().FullName, e.Message));
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}
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}
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return false;
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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, ref ForgeInfo forgeInfo)
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{
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bool success = false;
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int protocolversionTmp = 0;
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ForgeInfo forgeInfoTmp = null;
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if (AutoTimeout.Perform(() =>
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{
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try
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{
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if (Protocol16Handler.doPing(serverIP, serverPort, ref protocolversionTmp)
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|| Protocol18Handler.doPing(serverIP, serverPort, ref protocolversionTmp, ref forgeInfoTmp))
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{
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success = true;
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}
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else ConsoleIO.WriteLineFormatted("§8Unexpected response from the server (is that a Minecraft server?)");
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}
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catch (Exception e)
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{
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ConsoleIO.WriteLineFormatted(String.Format("§8{0}: {1}", e.GetType().FullName, e.Message));
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}
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}, TimeSpan.FromSeconds(Settings.ResolveSrvRecordsShortTimeout ? 5 : 30)))
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{
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protocolversion = protocolversionTmp;
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forgeInfo = forgeInfoTmp;
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return success;
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}
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else
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{
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ConsoleIO.WriteLineFormatted("§8A timeout 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, ForgeInfo forgeInfo, 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_Protocol18 = { 4, 5, 47, 107, 108, 109, 110, 210, 315, 316, 335, 338, 340 };
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if (Array.IndexOf(supportedVersions_Protocol18, ProtocolVersion) > -1)
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return new Protocol18Handler(Client, ProtocolVersion, Handler, forgeInfo);
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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":
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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":
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case "1.8.0":
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case "1.8.1":
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case "1.8.2":
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case "1.8.3":
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case "1.8.4":
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case "1.8.5":
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case "1.8.6":
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case "1.8.7":
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case "1.8.8":
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case "1.8.9":
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return 47;
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case "1.9":
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case "1.9.0":
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return 107;
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case "1.9.1":
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return 108;
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case "1.9.2":
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return 109;
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case "1.9.3":
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case "1.9.4":
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return 110;
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case "1.10":
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case "1.10.0":
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case "1.10.1":
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case "1.10.2":
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return 210;
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case "1.11":
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case "1.11.0":
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return 315;
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case "1.11.1":
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case "1.11.2":
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return 316;
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case "1.12":
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case "1.12.0":
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return 335;
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case "1.12.1":
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return 338;
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case "1.12.2":
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return 340;
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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 0;
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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, LoginRequired, InvalidToken, NullError };
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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="clienttoken">Will contain the client token generated before sending to Minecraft.net</param>
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/// <param name="uuid">Will contain the player's PlayerID, 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(string user, string pass, out SessionToken session)
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{
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session = new SessionToken() { ClientID = Guid.NewGuid().ToString().Replace("-", "") };
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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) + "\", \"clientToken\": \"" + JsonEncode(session.ClientID) + "\" }";
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if (Settings.DebugMessages)
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ConsoleIO.WriteLineFormatted("§8Debug: Login Request: " + json_request);
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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 (Settings.DebugMessages)
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ConsoleIO.WriteLineFormatted("§8Debug: Login Response: " + result);
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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) { session.ID = temp[1].Split('"')[0]; }
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temp = result.Split(new string[] { "name\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { session.PlayerName = 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) { session.PlayerID = 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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/// Validates whether accessToken must be refreshed
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/// </summary>
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/// <param name="accesstoken">Will contain the cached access token previously returned by Minecraft.net</param>
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/// <param name="clienttoken">Will contain the cached client token created on login</param>
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/// <returns>Returns the status of the token (Valid, Invalid, etc.)</returns>
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public static LoginResult GetTokenValidation(SessionToken session)
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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\": \"" + JsonEncode(session.ID) + "\", \"clientToken\": \"" + JsonEncode(session.ClientID) + "\" }";
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int code = DoHTTPSPost("authserver.mojang.com", "/validate", json_request, ref result);
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if (code == 204)
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{
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return LoginResult.Success;
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}
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else if (code == 403)
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{
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return LoginResult.LoginRequired;
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}
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else
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{
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return LoginResult.OtherError;
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}
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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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/// Refreshes invalid token
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/// </summary>
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/// <param name="user">Login</param>
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/// <param name="accesstoken">Will contain the new access token returned by Minecraft.net, if the refresh is successful</param>
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/// <param name="clienttoken">Will contain the client token generated before sending to Minecraft.net</param>
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/// <param name="uuid">Will contain the player's PlayerID, needed for multiplayer</param>
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/// <returns>Returns the status of the new token request (Success, Failure, etc.)</returns>
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public static LoginResult GetNewToken(SessionToken currentsession, out SessionToken newsession)
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{
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newsession = new SessionToken();
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try
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{
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string result = "";
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string json_request = "{ \"accessToken\": \"" + JsonEncode(currentsession.ID) + "\", \"clientToken\": \"" + JsonEncode(currentsession.ClientID) + "\", \"selectedProfile\": { \"id\": \"" + JsonEncode(currentsession.PlayerID) + "\", \"name\": \"" + JsonEncode(currentsession.PlayerName) + "\" } }";
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int code = DoHTTPSPost("authserver.mojang.com", "/refresh", json_request, ref result);
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if (code == 200)
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{
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if (result == null)
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{
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return LoginResult.NullError;
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}
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else {
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string[] temp = result.Split(new string[] { "accessToken\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { newsession.ID = temp[1].Split('"')[0]; }
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temp = result.Split(new string[] { "clientToken\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { newsession.ClientID = temp[1].Split('"')[0]; }
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temp = result.Split(new string[] { "name\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { newsession.PlayerName = temp[1].Split('"')[0]; }
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temp = result.Split(new string[] { "selectedProfile\":[{\"id\":\"" }, StringSplitOptions.RemoveEmptyEntries);
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if (temp.Length >= 2) { newsession.PlayerID = 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 && result.Contains("InvalidToken"))
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{
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return LoginResult.InvalidToken;
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}
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else
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{
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ConsoleIO.WriteLineFormatted("§8Got error code from server while refreshing authentication: " + code);
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return LoginResult.OtherError;
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}
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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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//Test method currently not working
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//See https://github.com/ORelio/Minecraft-Console-Client/issues/51
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public static void RealmsListWorlds(string username, string uuid, string accesstoken)
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{
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string result = "";
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string cookies = String.Format("sid=token:{0}:{1};user={2};version={3}", accesstoken, uuid, username, Program.MCHighestVersion);
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DoHTTPSGet("mcoapi.minecraft.net", "/worlds", cookies, ref result);
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Console.WriteLine(result);
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}
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/// <summary>
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/// Make a HTTPS GET request to the specified endpoint of the Mojang API
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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="cookies">Cookies for making the request</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 DoHTTPSGet(string host, string endpoint, string cookies, ref string result)
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{
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List<String> http_request = new List<string>();
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http_request.Add("GET " + endpoint + " HTTP/1.1");
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http_request.Add("Cookie: " + cookies);
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http_request.Add("Cache-Control: no-cache");
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http_request.Add("Pragma: no-cache");
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http_request.Add("Host: " + host);
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http_request.Add("User-Agent: Java/1.6.0_27");
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http_request.Add("Accept-Charset: ISO-8859-1,UTF-8;q=0.7,*;q=0.7");
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http_request.Add("Connection: close");
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http_request.Add("");
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return DoHTTPSRequest(http_request, host, ref result);
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}
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/// <summary>
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/// Make a HTTPS POST request to the specified endpoint of the Mojang API
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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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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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return DoHTTPSRequest(http_request, host, ref result);
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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="headers">Request headers and optional body (POST)</param>
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/// <param name="host">Host to connect to</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 DoHTTPSRequest(List<string> headers, string host, ref string result)
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{
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string postResult = null;
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int statusCode = 520;
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Exception exception = null;
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AutoTimeout.Perform(() =>
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{
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try
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{
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TcpClient client = ProxyHandler.newTcpClient(host, 443, true);
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SslStream stream = new SslStream(client.GetStream());
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stream.AuthenticateAsClient(host);
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stream.Write(Encoding.ASCII.GetBytes(String.Join("\r\n", headers.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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postResult = raw_result.Substring(raw_result.IndexOf("\r\n\r\n") + 4);
|
|
statusCode = Settings.str2int(raw_result.Split(' ')[1]);
|
|
}
|
|
else statusCode = 520; //Web server is returning an unknown error
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
if (!(e is System.Threading.ThreadAbortException))
|
|
{
|
|
exception = e;
|
|
}
|
|
}
|
|
}, TimeSpan.FromSeconds(30));
|
|
result = postResult;
|
|
if (exception != null)
|
|
throw exception;
|
|
return statusCode;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Encode a string to a json string.
|
|
/// Will convert special chars to \u0000 unicode escape sequences.
|
|
/// </summary>
|
|
/// <param name="text">Source text</param>
|
|
/// <returns>Encoded text</returns>
|
|
private static string JsonEncode(string text)
|
|
{
|
|
StringBuilder result = new StringBuilder();
|
|
foreach (char c in text)
|
|
{
|
|
if ((c >= '0' && c <= '9') ||
|
|
(c >= 'a' && c <= 'z') ||
|
|
(c >= 'A' && c <= 'Z'))
|
|
{
|
|
result.Append(c);
|
|
}
|
|
else
|
|
{
|
|
result.AppendFormat(@"\u{0:x4}", (int)c);
|
|
}
|
|
}
|
|
|
|
return result.ToString();
|
|
}
|
|
}
|
|
}
|