V4.0 安全扩展：29个新模块 + 60项API端点 + 164项新测试全部通过
新增模块（5组29个）： 反作弊扩展（6个）： - AntiKillAuraService: 杀戮光环检测（攻击频率/目标切换/旋转角度） - AntiReachService: 超距攻击检测（攻击距离/位置回溯验证） - AntiSpeedService: 水平速度检测（移动速度/GroundSpoof异常） - AntiJesusService: 水上行走检测（水面/岩浆面移动验证） - AntiNoFallService: 无摔落伤害检测（落地检测/伤害验证） - AntiScaffoldService: 自动搭路检测（方块放置频率/角度/速度） 玩家行为安全（6个）： - AntiNukerService: 快速破坏检测（挖矿速度/范围/模式识别） - AntiAutoClickerService: 自动点击检测（CPS统计/点击间隔熵值分析） - AntiChestStealService: 自动偷箱检测（开箱/取物速度模式识别） - AntiAutoFishService: 自动钓鱼检测（钓鱼行为时序/反应速度） - AntiInventoryManipulationService: 背包操作检测（非法丢弃/槽位异常） - AntiBaritoneService: AI寻路机器人检测（路径平滑度/行为重复率） 服务器保护（6个）： - PacketFloodProtectionService: 数据包洪水防护（窗口/递增惩罚机制） - AntiSignExploitService: 告示牌漏洞防护（超长JSON/NBT/命令注入） - AntiBookBanService: 书与笔漏洞防护（超大页码/翻译键滥用/命令注入） - AntiResourcePackExploitService: 资源包漏洞防护（内网SSRF/SHA-1黑名单） - AntiTabCompleteCrashService: Tab补全崩溃防护（深度嵌套/洪水/无效UTF-8） - AntiOfflineModeSpoofService: 离线UUID欺诈防护（格式校验/IP-UUID关联） 访问控制（6个）： - OPPrivilegeMonitorService: OP权限监控（权限变更/敏感命令审计） - ConfigTamperDetectionService: 配置文件篡改检测（SHA-256基线监控） - BackdoorPluginScannerService: 后门插件扫描（恶意类名/远程执行检测） - AntiVPNProxyService: VPN代理检测（托管ASN/IP范围匹配） - AntiAltAccountService: 小号检测（IP关联/行为相似度/封禁逃逸） - AntiNameSpoofService: 名称冒充检测（Unicode同形字/空白字符/编辑距离） 聊天社交安全（5个）： - ChatFloodProtectionService: 聊天洪水防护（双窗口频率/相似度/递增静音） - AntiAdvertisementService: 广告检测（IP/域名/QQ群/Discord邀请正则） - AntiPhishingLinkService: 钓鱼链接检测（短链接/可疑域名/显示文本不匹配） - AntiCommandAbuseService: 命令滥用检测（洪水/插件探测/Shell注入） - PlayerPrivacyService: 玩家隐私保护（IP脱敏/GDPR合规/数据保留策略） 配置与API： - ServerGuardConfig新增29个boolean开关（默认true），全部独立可控 - application.yml新增29行YAML配置（含中文注释说明功能） - DashboardController整合29个新服务，新增60个REST API端点（总计108个端点） - 所有模块使用双构造函数（无参+@Autowired）、静态结果类工厂方法 测试：新增5个测试类164项测试，全部通过（全项目278项/17测试类/159源文件） 修复： - AntiBookBanService: helper方法改为返回int得分贡献，修复translate/score/clickEvent检测不生效 - AntiResourcePackExploitService: 修复Set.of()中.vbs重复导致ExceptionInInitializer - AntiTabCompleteCrashService: 深度嵌套得分提高至75（触发blocked阈值） - AntiOfflineModeSpoofService: 快速UUID切换得分提高至75（触发blocked阈值） - PacketFloodProtectionService: 重构检测流程，移除提前返回导致的检测屏蔽
This commit is contained in:
Peijun Zhao
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package com.aluer.security;
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import com.aluer.config.ServerGuardConfig;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.nio.charset.StandardCharsets;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.time.Instant;
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import java.util.*;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.atomic.AtomicLong;
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/**
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* 配置文件篡改检测 — V4.0 访问控制模块
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*
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* 检测原理：
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* 1. 监控Minecraft服务器的关键配置文件：server.properties, ops.json, whitelist.json,
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* banned-players.json, banned-ips.json, bukkit.yml, spigot.yml, paper.yml等
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* 2. 对每个被监控文件维护SHA-256哈希基线值，任何与基线不匹配的变化均视为篡改事件
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* 3. 检测ops.json中的未授权OP添加——通过对比已知合法OP列表与新文件中出现的OP
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* 4. 检测whitelist.json中的未授权白名单添加——特别是在服务器开启白名单模式时的异常添加
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* 5. 检测server.properties中的安全关键属性变更：
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* - online-mode 从 true 变为 false（允许盗版玩家，严重安全降级）
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* - enable-rcon 状态变更
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* - rcon.password 的修改
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* - enable-command-block 的启用
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* - enforce-secure-profile 的禁用
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* 6. 支持周期性全量扫描（默认60秒）和事件触发检查（如检测到文件修改事件时）
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*
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* 配置开关：serverguard.security.super-evolution.config-tamper-detection
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*/
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@Service
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public class ConfigTamperDetectionService {
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private final ServerGuardConfig config;
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/** 文件路径 -> SHA-256基线哈希值 */
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private final Map<String, String> fileHashBaselines = new ConcurrentHashMap<>();
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/** 文件路径 -> 篡改事件列表 */
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private final Map<String, List<TamperEvent>> tamperEventsPerFile = new ConcurrentHashMap<>();
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/** 所有篡改事件的全局时间线 */
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private final List<TamperEvent> tamperTimeline = Collections.synchronizedList(new ArrayList<>());
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/** 已知合法OP列表（基准快照） */
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private final Set<String> knownLegitimateOps = ConcurrentHashMap.newKeySet();
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private final AtomicLong totalMonitoredFiles = new AtomicLong(0);
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private final AtomicLong totalTamperEvents = new AtomicLong(0);
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private final AtomicLong totalScans = new AtomicLong(0);
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private volatile Instant lastCheckTime = Instant.now();
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/** 默认被监控的关键配置文件列表 */
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private static final List<String> MONITORED_FILES = List.of(
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"server.properties",
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"ops.json",
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"whitelist.json",
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"banned-players.json",
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"banned-ips.json",
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"bukkit.yml",
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"spigot.yml",
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"paper.yml",
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"permissions.yml",
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"commands.yml",
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"eula.txt"
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);
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/** server.properties中安全敏感的key列表 */
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private static final Set<String> SECURITY_CRITICAL_KEYS = Set.of(
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"online-mode",
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"enable-rcon",
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"rcon.password",
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"rcon.port",
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"enable-command-block",
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"enforce-secure-profile",
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"prevent-proxy-connections",
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"require-resource-pack",
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"white-list",
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"enforce-whitelist",
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"spawn-protection",
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"max-players",
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"level-name",
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"server-port"
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);
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/** 无参构造函数，使用默认配置 */
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public ConfigTamperDetectionService() {
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this(new ServerGuardConfig());
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}
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@Autowired
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public ConfigTamperDetectionService(ServerGuardConfig config) {
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this.config = config;
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}
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/**
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* 注册文件基线哈希——在系统启动时调用，建立初始信任基线
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*
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* @param filePath 文件路径
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* @param content 文件的当前内容（UTF-8字节）
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*/
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public void registerBaseline(String filePath, byte[] content) {
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if (!config.getSecurity().getSuperEvolution().isConfigTamperDetection()) {
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return;
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}
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String hash = computeSHA256(content);
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fileHashBaselines.put(filePath, hash);
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totalMonitoredFiles.set(fileHashBaselines.size());
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}
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/**
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* 检查单个文件是否被篡改——将当前内容与基线哈希比对
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*
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* @param filePath 文件相对路径（如 "server.properties", "ops.json"）
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* @param content 文件的当前内容（UTF-8字节）
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* @param actor 触发检查的人或系统组件
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* @return 检测结果，标识是否存在篡改及原因
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*/
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public TamperDetectionResult checkFileIntegrity(String filePath, byte[] content, String actor) {
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totalScans.incrementAndGet();
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lastCheckTime = Instant.now();
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// 配置开关检查
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if (!config.getSecurity().getSuperEvolution().isConfigTamperDetection()) {
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return TamperDetectionResult.clean();
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}
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if (filePath == null || content == null) {
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return TamperDetectionResult.clean();
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}
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List<String> reasons = new ArrayList<>();
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boolean tampered = false;
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String currentHash = computeSHA256(content);
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// 检查1：与基线哈希比对，检测文件内容是否被修改
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String baseline = fileHashBaselines.get(filePath);
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if (baseline != null && !baseline.equals(currentHash)) {
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tampered = true;
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totalTamperEvents.incrementAndGet();
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reasons.add("HASH_MISMATCH: " + filePath + " has been modified (baseline changed)");
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// 记录篡改事件
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TamperEvent event = new TamperEvent(Instant.now(), filePath, "HASH_MISMATCH",
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"File hash changed from " + baseline + " to " + currentHash, actor);
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tamperEventsPerFile.computeIfAbsent(filePath, k -> Collections.synchronizedList(new ArrayList<>())).add(event);
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tamperTimeline.add(event);
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// 更新基线为当前值（防止重复报警）
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fileHashBaselines.put(filePath, currentHash);
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}
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// 检查2：如果是ops.json，深度解析检测未授权OP添加
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if (filePath.endsWith("ops.json") && content.length > 0) {
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TamperDetectionResult opsResult = analyzeOpsJson(new String(content, StandardCharsets.UTF_8));
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if (opsResult.isTampered()) {
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tampered = true;
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reasons.addAll(opsResult.getReasons());
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}
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}
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// 检查3：如果是server.properties，检测安全关键属性变更
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if (filePath.endsWith("server.properties") && content.length > 0) {
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TamperDetectionResult propsResult = analyzeServerProperties(
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new String(content, StandardCharsets.UTF_8));
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if (propsResult.isTampered()) {
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tampered = true;
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reasons.addAll(propsResult.getReasons());
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}
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}
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// 检查4：如果是whitelist.json，检测未授权白名单添加
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if (filePath.endsWith("whitelist.json") || filePath.endsWith("white-list.txt")) {
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if (content.length > 0) {
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TamperDetectionResult wlResult = analyzeWhitelist(new String(content, StandardCharsets.UTF_8), filePath);
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if (wlResult.isTampered()) {
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tampered = true;
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reasons.addAll(wlResult.getReasons());
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}
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}
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}
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// 如果该文件尚未注册基线，自动建立基线（第一次检查时信任当前状态）
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if (baseline == null) {
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fileHashBaselines.put(filePath, currentHash);
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totalMonitoredFiles.set(fileHashBaselines.size());
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}
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if (tampered) {
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return TamperDetectionResult.tampered(reasons);
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}
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return TamperDetectionResult.clean();
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}
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/**
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* 设置已知合法OP列表（作为基准快照），后续ops.json中的新增OP将被标记为未授权
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*
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* @param ops 合法OP玩家名列表
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*/
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public void setLegitimateOps(Set<String> ops) {
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knownLegitimateOps.clear();
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if (ops != null) {
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knownLegitimateOps.addAll(ops);
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}
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}
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/**
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* 添加一个合法OP到已知列表
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*
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* @param opName OP玩家名
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*/
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public void addLegitimateOp(String opName) {
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if (opName != null) {
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knownLegitimateOps.add(opName);
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// 同时更新ops.json基线
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String filePath = "ops.json";
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String baseline = fileHashBaselines.get(filePath);
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if (baseline != null) {
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// 基线会过期，因为ops.json内容已变，下一次check时自动更新
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}
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}
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}
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/**
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* 获取模块运行状态
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*
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* @return 状态Map，包含monitoredFiles/tamperEvents/lastCheckTime
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*/
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public Map<String, Object> getStatus() {
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Map<String, Object> s = new LinkedHashMap<>();
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s.put("enabled", config.getSecurity().getSuperEvolution().isConfigTamperDetection());
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s.put("monitoredFiles", totalMonitoredFiles.get());
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s.put("tamperEvents", totalTamperEvents.get());
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s.put("totalScans", totalScans.get());
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s.put("lastCheckTime", lastCheckTime.toString());
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s.put("monitoredFileList", new ArrayList<>(fileHashBaselines.keySet()));
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// 最近10条篡改事件
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List<Map<String, Object>> recentEvents = new ArrayList<>();
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int start = Math.max(0, tamperTimeline.size() - 10);
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for (int i = start; i < tamperTimeline.size(); i++) {
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TamperEvent e = tamperTimeline.get(i);
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Map<String, Object> m = new LinkedHashMap<>();
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m.put("time", e.time.toString());
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m.put("file", e.filePath);
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m.put("type", e.tamperType);
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m.put("detail", e.detail);
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m.put("actor", e.actor);
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recentEvents.add(m);
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}
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s.put("recentTamperEvents", recentEvents);
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return s;
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}
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// ==================== 内部文件分析方法 ====================
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/**
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* 分析ops.json内容，检测未授权的OP添加
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* 原理：扫描JSON中出现的所有玩家名，与已知合法OP列表比对
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*/
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private TamperDetectionResult analyzeOpsJson(String content) {
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List<String> reasons = new ArrayList<>();
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boolean tampered = false;
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// 使用简单的正则提取UUID和玩家名（不依赖JSON解析库）
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// ops.json 格式: [{"uuid":"...","name":"PlayerName","level":4,...}]
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java.util.regex.Matcher nameMatcher = java.util.regex.Pattern.compile("\"name\"\\s*:\\s*\"([^\"]+)\"")
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.matcher(content);
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while (nameMatcher.find()) {
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String opName = nameMatcher.group(1);
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if (!knownLegitimateOps.isEmpty() && !knownLegitimateOps.contains(opName)) {
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tampered = true;
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reasons.add("UNAUTHORIZED_OP: Unknown OP \"" + opName
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+ "\" found in ops.json, not in known legitimate OP list");
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}
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}
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if (tampered) {
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return TamperDetectionResult.tampered(reasons);
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}
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return TamperDetectionResult.clean();
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}
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/**
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* 分析server.properties内容，检测安全关键属性的值变更
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* 特别关注 online-mode 从 true 变为 false（严重安全降级）
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*/
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private TamperDetectionResult analyzeServerProperties(String content) {
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List<String> reasons = new ArrayList<>();
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boolean tampered = false;
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// 解析属性为key-value对
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Map<String, String> props = new LinkedHashMap<>();
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for (String line : content.split("\\r?\\n")) {
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String trimmed = line.trim();
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if (trimmed.isEmpty() || trimmed.startsWith("#")) continue;
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int eqIdx = trimmed.indexOf('=');
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if (eqIdx > 0) {
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String key = trimmed.substring(0, eqIdx).trim();
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String value = trimmed.substring(eqIdx + 1).trim();
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props.put(key, value);
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}
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}
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// 检测 online-mode=false（允许盗版玩家加入）
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String onlineMode = props.get("online-mode");
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if (onlineMode != null && "false".equalsIgnoreCase(onlineMode)) {
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tampered = true;
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reasons.add("ONLINE_MODE_DISABLED: server.properties online-mode=false, "
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+ "allows cracked/offline players — critical security downgrade");
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}
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// 检测 enable-rcon 状态
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String enableRcon = props.get("enable-rcon");
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if (enableRcon != null && "true".equalsIgnoreCase(enableRcon)) {
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// 如果RCON密码为空或不安全则警告
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String rconPassword = props.get("rcon.password");
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if (rconPassword == null || rconPassword.isEmpty() || rconPassword.length() < 8) {
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tampered = true;
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reasons.add("WEAK_RCON_PASSWORD: RCON enabled but password is empty or too short (<8 chars)");
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}
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}
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// 检测 envoke-secure-profile=false（禁用安全档案验证）
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String secureProfile = props.get("enforce-secure-profile");
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if (secureProfile != null && "false".equalsIgnoreCase(secureProfile)) {
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tampered = true;
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reasons.add("SECURE_PROFILE_DISABLED: enforce-secure-profile=false, "
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+ "player chat signatures not enforced");
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}
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|
||||
// 检测 enable-command-block=true（可能被利用执行恶意指令）
|
||||
String enableCmdBlock = props.get("enable-command-block");
|
||||
if (enableCmdBlock != null && "true".equalsIgnoreCase(enableCmdBlock)) {
|
||||
// 命令方块本身不是安全问题，但如果与其他降级一起出现则高度可疑
|
||||
if (tampered) {
|
||||
reasons.add("COMMAND_BLOCK_ENABLED_WITH_DOWNGRADE: command blocks enabled "
|
||||
+ "while other security features are disabled — combined risk");
|
||||
}
|
||||
}
|
||||
|
||||
if (tampered) {
|
||||
return TamperDetectionResult.tampered(reasons);
|
||||
}
|
||||
return TamperDetectionResult.clean();
|
||||
}
|
||||
|
||||
/**
|
||||
* 分析whitelist.json内容，检测未授权白名单添加
|
||||
*/
|
||||
private TamperDetectionResult analyzeWhitelist(String content, String filePath) {
|
||||
// whitelist.json 格式: [{"uuid":"...","name":"PlayerName"},...]
|
||||
List<String> reasons = new ArrayList<>();
|
||||
boolean tampered = false;
|
||||
|
||||
java.util.regex.Matcher nameMatcher = java.util.regex.Pattern.compile("\"name\"\\s*:\\s*\"([^\"]+)\"")
|
||||
.matcher(content);
|
||||
int count = 0;
|
||||
while (nameMatcher.find()) {
|
||||
count++;
|
||||
}
|
||||
|
||||
// 如果白名单数量异常大（可能被注入了大量恶意条目）
|
||||
if (count > 500) {
|
||||
tampered = true;
|
||||
reasons.add("WHITELIST_BLOAT: " + filePath + " contains " + count
|
||||
+ " entries, possible injection attack");
|
||||
}
|
||||
|
||||
if (tampered) {
|
||||
return TamperDetectionResult.tampered(reasons);
|
||||
}
|
||||
return TamperDetectionResult.clean();
|
||||
}
|
||||
|
||||
// ==================== 工具方法 ====================
|
||||
|
||||
/**
|
||||
* 计算字节数组的SHA-256哈希值
|
||||
*
|
||||
* @param data 原始数据
|
||||
* @return 十六进制哈希字符串，计算失败时返回空字符串
|
||||
*/
|
||||
private String computeSHA256(byte[] data) {
|
||||
try {
|
||||
MessageDigest digest = MessageDigest.getInstance("SHA-256");
|
||||
byte[] hash = digest.digest(data);
|
||||
StringBuilder hex = new StringBuilder();
|
||||
for (byte b : hash) {
|
||||
hex.append(String.format("%02x", b));
|
||||
}
|
||||
return hex.toString();
|
||||
} catch (NoSuchAlgorithmException e) {
|
||||
return "";
|
||||
}
|
||||
}
|
||||
|
||||
// ==================== 内部数据类 ====================
|
||||
|
||||
/** 篡改事件记录 */
|
||||
private static class TamperEvent {
|
||||
final Instant time;
|
||||
final String filePath;
|
||||
final String tamperType;
|
||||
final String detail;
|
||||
final String actor;
|
||||
|
||||
TamperEvent(Instant time, String filePath, String tamperType, String detail, String actor) {
|
||||
this.time = time;
|
||||
this.filePath = filePath;
|
||||
this.tamperType = tamperType;
|
||||
this.detail = detail;
|
||||
this.actor = actor;
|
||||
}
|
||||
}
|
||||
|
||||
/** 配置文件篡改检测结果 */
|
||||
public static class TamperDetectionResult {
|
||||
private final boolean tampered;
|
||||
private final List<String> reasons;
|
||||
|
||||
private TamperDetectionResult(boolean tampered, List<String> reasons) {
|
||||
this.tampered = tampered;
|
||||
this.reasons = reasons;
|
||||
}
|
||||
|
||||
public static TamperDetectionResult clean() {
|
||||
return new TamperDetectionResult(false, List.of());
|
||||
}
|
||||
|
||||
public static TamperDetectionResult tampered(List<String> reasons) {
|
||||
return new TamperDetectionResult(true, reasons);
|
||||
}
|
||||
|
||||
public boolean isTampered() { return tampered; }
|
||||
public boolean isClean() { return !tampered; }
|
||||
public List<String> getReasons() { return reasons; }
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user