58 lines
3.0 KiB
Java
58 lines
3.0 KiB
Java
/*
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* This file is part of ViaForge - https://github.com/FlorianMichael/ViaForge
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* Copyright (C) 2021-2024 FlorianMichael/EnZaXD <florian.michael07@gmail.com> and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package de.florianmichael.viaforge.mixin.impl;
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import com.mojang.authlib.GameProfile;
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import com.mojang.authlib.exceptions.AuthenticationException;
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import com.mojang.authlib.minecraft.MinecraftSessionService;
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import com.viaversion.viaversion.api.connection.UserConnection;
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import de.florianmichael.viaforge.common.ViaForgeCommon;
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import net.minecraft.client.network.NetHandlerLoginClient;
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import net.minecraft.network.NetworkManager;
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import net.raphimc.vialegacy.api.LegacyProtocolVersion;
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import net.raphimc.vialegacy.protocols.release.protocol1_7_2_5to1_6_4.storage.ProtocolMetadataStorage;
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import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
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import org.spongepowered.asm.mixin.Final;
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import org.spongepowered.asm.mixin.Mixin;
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import org.spongepowered.asm.mixin.Shadow;
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import org.spongepowered.asm.mixin.injection.At;
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import org.spongepowered.asm.mixin.injection.Redirect;
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@SuppressWarnings("DataFlowIssue")
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@Mixin(NetHandlerLoginClient.class)
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public class MixinNetHandlerLoginClient {
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@Shadow @Final private NetworkManager networkManager;
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@Redirect(method = "handleEncryptionRequest", at = @At(value = "INVOKE", target = "Lcom/mojang/authlib/minecraft/MinecraftSessionService;joinServer(Lcom/mojang/authlib/GameProfile;Ljava/lang/String;Ljava/lang/String;)V"))
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public void onlyJoinServerIfPremium(MinecraftSessionService instance, GameProfile profile, String authenticationToken, String serverId) throws AuthenticationException {
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if (ViaForgeCommon.getManager().getTargetVersion().olderThanOrEqualTo(LegacyProtocolVersion.r1_6_4)) {
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final UserConnection user = networkManager.channel().attr(ViaForgeCommon.LOCAL_VIA_USER).get();
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if (user != null && user.has(ProtocolMetadataStorage.class) && !user.get(ProtocolMetadataStorage.class).authenticate) {
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// We are in the 1.7 -> 1.6 protocol, so we need to skip the joinServer call
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// if the server is in offline mode, due the packet changes <-> networking changes
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// Minecraft's networking code is bad for us.
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return;
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}
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}
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instance.joinServer(profile, authenticationToken, serverId);
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}
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}
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