mirror of
https://github.com/Gurge44/EndlessHostRoles.git
synced 2026-10-20 01:46:25 +00:00
Pietro420
08fe4d01cf
* Change unload to deactivate only current plugin * only replicate handshake if reactor is not present * prevent server authority incompatibility
103 lines
2.8 KiB
C#
103 lines
2.8 KiB
C#
using System;
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using HarmonyLib;
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using Hazel;
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using Il2CppInterop.Runtime.InteropTypes.Arrays;
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using InnerNet;
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namespace EHR.Patches;
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// This is taken from Reactor modded handshake.
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// We do not want to pull in Reactor as a dependency though.
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/// <summary>
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/// Represents flags of the mod.
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/// </summary>
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[Flags]
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public enum ModFlags : ushort
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{
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/// <summary>
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/// No flags.
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/// </summary>
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None = 0,
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/// <summary>
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/// Requires all clients in a lobby to have the mod.
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/// </summary>
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RequireOnAllClients = 1 << 0,
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/// <summary>
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/// Requires the server to have a plugin that handles the mod.
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/// </summary>
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RequireOnServer = 1 << 1,
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/// <summary>
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/// Requires the host of the lobby to have the mod.
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/// </summary>
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RequireOnHost = 1 << 2,
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/// <summary>
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/// Notifies the game server that the host has authority over game logic.
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/// </summary>
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DisableServerAuthority = 1 << 3,
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}
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/// <summary>
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/// Version of the Reactor.Networking protocol format.
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/// </summary>
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public enum ReactorProtocolVersion : byte
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{
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/// <summary>
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/// First public Reactor Protocol version.
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/// </summary>
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V2 = 1,
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/// <summary>
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/// Version introducing vanilla server support, syncer concept and registries.
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/// </summary>
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V3 = 2,
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/// <summary>
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/// Latest version.
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/// </summary>
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Latest = V3,
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}
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[HarmonyPatch(typeof(InnerNetClient), nameof(InnerNetClient.GetConnectionData))]
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public static class HandshakePatch
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{
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private const ulong MAGIC = 0x72656163746f72; // "reactor" in ascii, 7 bytes
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public static void Prefix(ref bool useDtlsLayout)
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{
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// Due to reasons currently unknown, the useDtlsLayout parameter sometimes doesn't reflect whether DTLS
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// is actually supposed to be enabled. This causes a bad handshake message and a quick disconnect.
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// The field on AmongUsClient appears to be more reliable, so override this parameter with what it is supposed to be.
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useDtlsLayout = AmongUsClient.Instance.useDtls;
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}
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public static void Postfix(ref Il2CppStructArray<byte> __result)
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{
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if (!Main.HasReactorPlugin)
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{
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var handshake = new MessageWriter(1000);
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// Original data
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handshake.Write(__result);
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// Reactor Header
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const byte version = (byte)ReactorProtocolVersion.Latest;
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const ulong value = (MAGIC << 8) | version;
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handshake.Write(value);
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// ModdedHandshakeC2S
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handshake.WritePacked(1);
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handshake.Write(Main.PluginGuid);
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handshake.Write(Main.PluginVersion);
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handshake.Write((ushort)(ModFlags.RequireOnHost | ModFlags.DisableServerAuthority));
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__result = handshake.ToByteArray(true);
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handshake.Recycle();
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}
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}
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} |