From 9a47b201cacce5711cc56ca7a78919c630833795 Mon Sep 17 00:00:00 2001 From: Verox001 Date: Fri, 18 Jul 2025 01:14:08 +0200 Subject: [PATCH] Stable --- .gitignore | 119 +++++++++++++++ LICENSE.txt | 21 +++ build.gradle | 92 ++++++++++++ gradle.properties | 14 ++ gradle/wrapper/gradle-wrapper.properties | 1 + settings.gradle | 9 ++ .../java/com/cimeyclust/ezcheat/Config.java | 32 +++++ .../java/com/cimeyclust/ezcheat/Ezcheat.java | 135 ++++++++++++++++++ .../cimeyclust/ezcheat/EzcheatPayload.java | 42 ++++++ .../ezcheat/client/EzcheatClient.java | 68 +++++++++ src/main/resources/fabric.mod.json | 25 ++++ 11 files changed, 558 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE.txt create mode 100644 build.gradle create mode 100644 gradle.properties create mode 100644 gradle/wrapper/gradle-wrapper.properties create mode 100644 settings.gradle create mode 100644 src/main/java/com/cimeyclust/ezcheat/Config.java create mode 100644 src/main/java/com/cimeyclust/ezcheat/Ezcheat.java create mode 100644 src/main/java/com/cimeyclust/ezcheat/EzcheatPayload.java create mode 100644 src/main/java/com/cimeyclust/ezcheat/client/EzcheatClient.java create mode 100644 src/main/resources/fabric.mod.json diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d5f737e --- /dev/null +++ b/.gitignore @@ -0,0 +1,119 @@ +# User-specific stuff +.idea/ + +*.iml +*.ipr +*.iws + +# IntelliJ +out/ +# mpeltonen/sbt-idea plugin +.idea_modules/ + +# JIRA plugin +atlassian-ide-plugin.xml + +# Compiled class file +*.class + +# Log file +*.log + +# BlueJ files +*.ctxt + +# Package Files # +*.jar +*.war +*.nar +*.ear +*.zip +*.tar.gz +*.rar + +# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml +hs_err_pid* + +*~ + +# temporary files which can be created if a process still has a handle open of a deleted file +.fuse_hidden* + +# KDE directory preferences +.directory + +# Linux trash folder which might appear on any partition or disk +.Trash-* + +# .nfs files are created when an open file is removed but is still being accessed +.nfs* + +# General +.DS_Store +.AppleDouble +.LSOverride + +# Icon must end with two \r +Icon + +# Thumbnails +._* + +# Files that might appear in the root of a volume +.DocumentRevisions-V100 +.fseventsd +.Spotlight-V100 +.TemporaryItems +.Trashes +.VolumeIcon.icns +.com.apple.timemachine.donotpresent + +# Directories potentially created on remote AFP share +.AppleDB +.AppleDesktop +Network Trash Folder +Temporary Items +.apdisk + +# Windows thumbnail cache files +Thumbs.db +Thumbs.db:encryptable +ehthumbs.db +ehthumbs_vista.db + +# Dump file +*.stackdump + +# Folder config file +[Dd]esktop.ini + +# Recycle Bin used on file shares +$RECYCLE.BIN/ + +# Windows Installer files +*.cab +*.msi +*.msix +*.msm +*.msp + +# Windows shortcuts +*.lnk + +.gradle +build/ + +# Ignore Gradle GUI config +gradle-app.setting + +# Cache of project +.gradletasknamecache + +**/build/ + +# Common working directory +run/ +runs/ + +# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored) +!gradle-wrapper.jar diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..47b6949 --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2025 Verox + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..9d64b14 --- /dev/null +++ b/build.gradle @@ -0,0 +1,92 @@ +plugins { + id 'fabric-loom' version '1.11-SNAPSHOT' + id 'maven-publish' +} + +version = project.mod_version +group = project.maven_group + +base { + archivesName = project.archives_base_name +} + + +repositories { + // Add repositories to retrieve artifacts from in here. + // You should only use this when depending on other mods because + // Loom adds the essential maven repositories to download Minecraft and libraries from automatically. + // See https://docs.gradle.org/current/userguide/declaring_repositories.html + // for more information about repositories. +} + +dependencies { + // To change the versions see the gradle.properties file + minecraft "com.mojang:minecraft:${project.minecraft_version}" + mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2" + modImplementation "net.fabricmc:fabric-loader:${project.loader_version}" + + modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}" + + implementation("com.electronwill.night-config:core:3.8.2") + implementation("com.electronwill.night-config:json:3.8.2") +} + +processResources { + inputs.property "version", project.version + inputs.property "minecraft_version", project.minecraft_version + inputs.property "loader_version", project.loader_version + filteringCharset "UTF-8" + + filesMatching("fabric.mod.json") { + expand "version": project.version, + "minecraft_version": project.minecraft_version, + "loader_version": project.loader_version + } +} + +def targetJavaVersion = 21 +tasks.withType(JavaCompile).configureEach { + // ensure that the encoding is set to UTF-8, no matter what the system default is + // this fixes some edge cases with special characters not displaying correctly + // see http://yodaconditions.net/blog/fix-for-java-file-encoding-problems-with-gradle.html + // If Javadoc is generated, this must be specified in that task too. + it.options.encoding = "UTF-8" + if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) { + it.options.release.set(targetJavaVersion) + } +} + +java { + def javaVersion = JavaVersion.toVersion(targetJavaVersion) + if (JavaVersion.current() < javaVersion) { + toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion) + } + // Loom will automatically attach sourcesJar to a RemapSourcesJar task and to the "build" task + // if it is present. + // If you remove this line, sources will not be generated. + withSourcesJar() +} + +jar { + from("LICENSE") { + rename { "${it}_${project.archivesBaseName}" } + } +} + +// configure the maven publication +publishing { + publications { + create("mavenJava", MavenPublication) { + artifactId = project.archives_base_name + from components.java + } + } + + // See https://docs.gradle.org/current/userguide/publishing_maven.html for information on how to set up publishing. + repositories { + // Add repositories to publish to here. + // Notice: This block does NOT have the same function as the block in the top level. + // The repositories here will be used for publishing your artifact, not for + // retrieving dependencies. + } +} diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..aff0d3e --- /dev/null +++ b/gradle.properties @@ -0,0 +1,14 @@ +# Done to increase the memory available to gradle. +org.gradle.jvmargs=-Xmx1G +# Fabric Properties +# check these on https://modmuss50.me/fabric.html +minecraft_version=1.21.5 +yarn_mappings=1.21.5+build.1 +loader_version=0.16.14 +# Mod Properties +mod_version=1.0.0 +maven_group=com.cimeyclust +archives_base_name=EZCheat +# Dependencies +# check this on https://modmuss50.me/fabric.html +fabric_version=0.128.1+1.21.5 diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..f9b829e --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1 @@ +distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.1-bin.zip diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..f91a4fe --- /dev/null +++ b/settings.gradle @@ -0,0 +1,9 @@ +pluginManagement { + repositories { + maven { + name = 'Fabric' + url = 'https://maven.fabricmc.net/' + } + gradlePluginPortal() + } +} diff --git a/src/main/java/com/cimeyclust/ezcheat/Config.java b/src/main/java/com/cimeyclust/ezcheat/Config.java new file mode 100644 index 0000000..d7771d7 --- /dev/null +++ b/src/main/java/com/cimeyclust/ezcheat/Config.java @@ -0,0 +1,32 @@ +package com.cimeyclust.ezcheat; + +import com.electronwill.nightconfig.core.file.CommentedFileConfig; +import com.electronwill.nightconfig.core.file.FileConfig; +import com.electronwill.nightconfig.core.io.WritingMode; +import net.fabricmc.loader.api.FabricLoader; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.nio.file.Path; + +public class Config { + private static final Logger LOGGER = LoggerFactory.getLogger("ezcheat"); + private static final Path CONFIG_PATH = + FabricLoader.getInstance().getConfigDir().resolve("ezcheat.json"); + + public static String MOD_ENDPOINT_URL = "https://modlist.ugasmp.com/api/mods"; + + public static void load() { + var cfg = FileConfig.builder(CONFIG_PATH) + .sync() + .autosave() + .writingMode(WritingMode.REPLACE) + .build(); + + cfg.load(); + MOD_ENDPOINT_URL = cfg.getOrElse("modEndpointUrl", + "https://modlist.ugasmp.com/api/mods"); + cfg.save(); + LOGGER.info("Loaded config: modEndpointUrl={}", MOD_ENDPOINT_URL); + } +} diff --git a/src/main/java/com/cimeyclust/ezcheat/Ezcheat.java b/src/main/java/com/cimeyclust/ezcheat/Ezcheat.java new file mode 100644 index 0000000..6606ec0 --- /dev/null +++ b/src/main/java/com/cimeyclust/ezcheat/Ezcheat.java @@ -0,0 +1,135 @@ +package com.cimeyclust.ezcheat; + +import com.google.gson.Gson; +import com.google.gson.reflect.TypeToken; +import net.fabricmc.api.ModInitializer; +import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking; +import net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents; +import net.fabricmc.fabric.api.networking.v1.*; +import net.fabricmc.loader.api.FabricLoader; +import net.minecraft.client.network.ClientPlayerEntity; +import net.minecraft.network.PacketByteBuf; +import net.minecraft.server.MinecraftServer; +import net.minecraft.server.network.ServerPlayNetworkHandler; +import net.minecraft.server.network.ServerPlayerEntity; +import net.minecraft.text.Text; +import net.minecraft.util.Identifier; +import org.apache.commons.codec.digest.DigestUtils; +import org.apache.logging.log4j.core.jmx.Server; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.Reader; +import java.lang.reflect.Type; +import java.net.HttpURLConnection; +import java.net.URL; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.*; +import java.util.concurrent.ConcurrentHashMap; + +public class Ezcheat implements ModInitializer { + public static final String MODID = "ezcheat"; + public static final Logger LOGGER = LoggerFactory.getLogger(MODID); + private static final Gson GSON = new Gson(); + private static final Map pendingChecks = new ConcurrentHashMap<>(); + + @Override + public void onInitialize() { + ServerPlayConnectionEvents.JOIN.register(this::onPlayerJoin); + ServerTickEvents.END_SERVER_TICK.register(this::onServerTick); + + PayloadTypeRegistry.playC2S().register(EzcheatPayload.ID, EzcheatPayload.CODEC); + + ServerPlayNetworking.registerGlobalReceiver(EzcheatPayload.ID, (payload, context) -> { + context.server().execute(() -> { + ServerPlayNetworkHandler handler = context.player().networkHandler; + MinecraftServer server = handler.player.getServer(); + UUID uuid = handler.player.getUuid(); + + // check if we have a pending check for this player + if (pendingChecks.containsKey(uuid)) { + pendingChecks.remove(uuid); + verifyPlayerMods(handler.player, payload.hashes()); + } else { + LOGGER.warn("Received mod hashes from {} without a pending check", handler.player.getName().getString()); + } + }); + }); + + // load config + Config.load(); + LOGGER.info("Ezcheat initialized; endpoint = {}", Config.MOD_ENDPOINT_URL); + } + + private void onPlayerJoin(ServerPlayNetworkHandler handler, PacketSender sender, MinecraftServer server) { + if (server.isSingleplayer()) { + LOGGER.debug("Skipping mod check for singleplayer"); + return; + } + UUID uuid = handler.player.getUuid(); + pendingChecks.put(uuid, System.currentTimeMillis()); + LOGGER.debug("Pending mod check for {}", handler.player.getName().getString()); + } + + private void onServerTick(MinecraftServer server) { + long now = System.currentTimeMillis(); + pendingChecks.entrySet().removeIf(entry -> { + if (now - entry.getValue() > 10_000) { + ServerPlayerEntity p = server.getPlayerManager().getPlayer(entry.getKey()); + if (p != null) { + p.networkHandler.disconnect(Text.literal("You must have Ezcheat installed (If you do, maybe there was an issue with your connection. Please try to join again in that case).")); + LOGGER.info("Kicked {} for not sending mod hashes in time", p.getName().getString()); + } + return true; + } + return false; + }); + } + + private String mapToString(Map map) { + StringBuilder sb = new StringBuilder(); + for (Map.Entry entry : map.entrySet()) { + sb.append(entry.getKey()).append("=").append(entry.getValue()).append(", "); + } + return sb.toString(); + } + + private void verifyPlayerMods(ServerPlayerEntity player, Map hashes) { + LOGGER.info("Verifying mod hashes: {}", mapToString(hashes)); + try { + // fetch allowed list + HttpURLConnection conn = (HttpURLConnection) new URL(Config.MOD_ENDPOINT_URL).openConnection(); + conn.setRequestMethod("GET"); + conn.setDoInput(true); + + try (InputStream is = conn.getInputStream(); + Reader rdr = new InputStreamReader(is)) { + Type mapType = new TypeToken>() { + }.getType(); + Map allowed = GSON.fromJson(rdr, mapType); + + List bad = new ArrayList<>(); + for (var e : hashes.entrySet()) { + String modid = e.getKey(), hash = e.getValue(); + if (!allowed.containsValue(hash)) { + bad.add(modid); + } + } + + if (!bad.isEmpty()) { + String msg = "Unallowed mods: " + String.join(", ", bad); + player.networkHandler.disconnect(Text.literal(msg)); + LOGGER.info("Kicked {} for unallowed mods: {}", player.getName().getString(), bad); + } else { + LOGGER.info("{} passed mod check", player.getName().getString()); + } + } + } catch (IOException e) { + LOGGER.error("Failed mod verification for {}: {}", player.getName().getString(), e.getMessage()); + } + } +} diff --git a/src/main/java/com/cimeyclust/ezcheat/EzcheatPayload.java b/src/main/java/com/cimeyclust/ezcheat/EzcheatPayload.java new file mode 100644 index 0000000..7154dcc --- /dev/null +++ b/src/main/java/com/cimeyclust/ezcheat/EzcheatPayload.java @@ -0,0 +1,42 @@ +package com.cimeyclust.ezcheat; + +import net.minecraft.network.RegistryByteBuf; +import net.minecraft.network.codec.PacketCodec; +import net.minecraft.network.packet.CustomPayload; +import net.minecraft.util.Identifier; +import java.util.HashMap; +import java.util.Map; + +public record EzcheatPayload(Map hashes) implements CustomPayload { + public static final CustomPayload.Id ID = + new CustomPayload.Id<>(Identifier.of(Ezcheat.MODID, "mod_hashes")); + + public static final PacketCodec CODEC = new PacketCodec<>() { + @Override + public void encode(RegistryByteBuf buf, EzcheatPayload value) { + Map hashes = value.hashes(); + buf.writeVarInt(hashes.size()); + for (Map.Entry entry : hashes.entrySet()) { + buf.writeString(entry.getKey()); + buf.writeString(entry.getValue()); + } + } + + @Override + public EzcheatPayload decode(RegistryByteBuf buf) { + int size = buf.readVarInt(); + Map hashes = new HashMap<>(); + for (int i = 0; i < size; i++) { + String key = buf.readString(); + String value = buf.readString(); + hashes.put(key, value); + } + return new EzcheatPayload(hashes); + } + }; + + @Override + public CustomPayload.Id getId() { + return ID; + } +} diff --git a/src/main/java/com/cimeyclust/ezcheat/client/EzcheatClient.java b/src/main/java/com/cimeyclust/ezcheat/client/EzcheatClient.java new file mode 100644 index 0000000..d084121 --- /dev/null +++ b/src/main/java/com/cimeyclust/ezcheat/client/EzcheatClient.java @@ -0,0 +1,68 @@ +package com.cimeyclust.ezcheat.client; + +import com.cimeyclust.ezcheat.Ezcheat; +import com.cimeyclust.ezcheat.EzcheatPayload; +import net.fabricmc.api.ClientModInitializer; +import net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents; +import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking; +import net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry; +import net.fabricmc.loader.api.FabricLoader; +import org.apache.commons.codec.digest.DigestUtils; + +import java.io.IOException; +import java.io.InputStream; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.HashMap; +import java.util.Map; + +public class EzcheatClient implements ClientModInitializer { + + @Override + public void onInitializeClient() { + ClientPlayConnectionEvents.JOIN.register((handler, sender, client) -> { + if (!client.isInSingleplayer()) { + this.sendHashes(); + } + }); + } + + /** Called client‑side to compute & send hashes */ + private void sendHashes() { + // gather mod files + Path modsDir = FabricLoader.getInstance() + .getGameDir() + .resolve("mods") + .toAbsolutePath(); + + Map hashes = new HashMap<>(); + for (var mod : FabricLoader.getInstance().getAllMods()) { + try { + Path path = null; + var paths = mod.getOrigin().getPaths(); + for (Path p : paths) { + if (Files.isRegularFile(p)) { + path = p; + break; + } + } + + if (path == null) { + Ezcheat.LOGGER.debug("Skipping mod {}: No valid path", mod.getMetadata().getId()); + continue; + } + + if (path.startsWith(modsDir)) { + try (InputStream in = Files.newInputStream(path)) { + hashes.put(mod.getMetadata().getId(), DigestUtils.sha256Hex(in)); + } + } + } catch (IOException e) { + Ezcheat.LOGGER.warn("Could not hash {}: {}", mod.getMetadata().getId(), e.getMessage()); + } + } + + EzcheatPayload payload = new EzcheatPayload(hashes); + ClientPlayNetworking.send(payload); + } +} diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json new file mode 100644 index 0000000..e60937d --- /dev/null +++ b/src/main/resources/fabric.mod.json @@ -0,0 +1,25 @@ +{ + "schemaVersion": 1, + "id": "ezcheat", + "version": "${version}", + "name": "EZCheat", + "description": "An easy AntiCheat based on Mod-Whitelists", + "authors": [], + "contact": {}, + "license": "MIT", + "icon": "assets/ezcheat/icon.png", + "environment": "*", + "entrypoints": { + "client": [ + "com.cimeyclust.ezcheat.client.EzcheatClient" + ], + "main": [ + "com.cimeyclust.ezcheat.Ezcheat" + ] + }, + "depends": { + "fabricloader": ">=${loader_version}", + "fabric": "*", + "minecraft": "${minecraft_version}" + } +}