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c49c23c7f0bf27d5481aace51d54e41e0f60cc9c
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51 Commits
Author SHA1 Message Date
ZacharyZcR c49c23c7f0 Harden scan robustness and tests 2026-06-14 22:23:48 +08:00
ZacharyZcR 5ad914a1bb feat: 统一服务缓存 + 指纹驱动插件匹配 
将 webServiceCache 扩展为通用 serviceCache，所有指纹识别结果
统一缓存，插件匹配时端口不命中则回退到服务名称匹配。

删除多余的 service_cache.go，复用已有的 ServiceInfo 体系。
补充 nil 防御、Explicit 标记、大量单元/集成/回归测试。
 2026-06-14 22:23:47 +08:00
ZacharyZcR 800cc30794 Fix credential cleanup and explicit tuning flags 2026-06-14 22:23:46 +08:00
ZacharyZcR 8e3cac303d fix: webtitle HTTP 请求失败时重试，修复批量扫描 POC 缺失 #587 
批量扫描（-hf）时并发压力导致 HTTP 请求瞬时失败，getWebTitle
直接返回 error，跳过指纹识别和 POC 触发。

加入指数退避重试（200ms→400ms），最多 3 次，复用 config.MaxRetries。
 2026-06-14 22:23:45 +08:00
ZacharyZcR d0295dcb92 fix: 修复 SSH 扫描 goroutine 泄漏 
ssh.NewClientConn 不接受 context，context 取消后底层 TCP 连接未关闭，
导致 readLoop goroutine 永久阻塞在 conn.Read 上。大规模扫描时泄漏数万
goroutine。

- doSSHAuth 新增 goroutine 监听 context 取消并关闭底层连接
- TestSingleCredential 移除 5 秒超时放弃逻辑，改为持续等待清理
 2026-06-14 22:23:44 +08:00
ZacharyZcR a02eed0518 refactor: mylib 重命名为 libs 
更清晰的目录命名，libs/ 存放内嵌的独立协议实现库。
 2026-06-01 08:22:13 +08:00
ZacharyZcR d6d323854a refactor: 完成全局状态到 session 的完整迁移 
将 plugins/services、plugins/local、plugins/web、webscan 层的日志输出、
漏洞结果保存和 TCP 计数器从全局 common.Log*/GetGlobalState() 迁移到
session 实例方法，确保 SDK 并发扫描时各实例完全隔离。

- 50 个文件，所有插件日志走 session.Log*
- DoRequest 加入 session 参数，计数器走 session.State
- POC 执行器通过 POCContext.Session 传递
- 仅保留 init() 和 CEL runtime 等无 session 场景的全局回退
 2026-06-01 08:13:23 +08:00
ZacharyZcR 569d21a8bc fix: harden address parsing edge cases 2026-06-01 04:03:46 +08:00
ZacharyZcR 8ec96bfe6d fix: harden scan edge cases 2026-06-01 03:32:13 +08:00
ZacharyZcR 3e4e2db722 feat: stream large host scans 2026-06-01 02:55:28 +08:00
ZacharyZcR 8d30ee334c Add native protocol service plugins
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2026-05-23 15:51:50 +08:00
ZacharyZcR 73cbe803c4 Expand i18n coverage 2026-05-23 15:18:40 +08:00
ZacharyZcR 9ed6cc95b6 replace string builder sprintf with fprintf
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2026-05-23 07:53:28 +08:00
ZacharyZcR a0f0379c6c silence ci warnings and staticcheck suggestions 2026-05-23 07:50:49 +08:00
ZacharyZcR 3c7823355d tighten scan session and HTTP paths 2026-05-23 07:46:53 +08:00
ZacharyZcR 1a714f6a0c reduce scanner client fingerprints 2026-05-23 07:20:24 +08:00
ZacharyZcR 0046817c2e fix mssql login client metadata 2026-05-23 07:17:55 +08:00
ZacharyZcR e0080555b4 fix: 跳过snmp社区字符串暴力破解中的冗余public探测
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2026-05-19 21:00:47 +08:00
ZacharyZcR bc2a8f653a fix: 修复新服务扫描插件的健壮性问题 
- ipmi: 删除未使用的 encoding/binary 导入
- rmi: TCP读取改用 io.ReadFull 避免分片导致的解析错误
- jdwp: handshake响应读取改用 io.ReadFull 避免分片误判
- nfs: v4协议回退时使用新连接避免残留数据污染
- snmp: 修正timeout计算与其他插件保持一致
 2026-05-19 20:46:22 +08:00
ZacharyZcR a92df59dfe fix: NFS plugin RPC probe + UDP dispatch in auto mode
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NFS: use RPC NULL call to detect NFS service before MOUNT EXPORT
UDP dispatch: query plugin registry directly in auto mode instead of
GetPlugins which excludes UDP from FilterService
 2026-05-19 00:37:35 +08:00
ZacharyZcR 0a28db7371 feat: add NFS, RMI and IPMI plugins 
NFS (2049/TCP): Sun RPC EXPORT call, lists shared directories
RMI (1099/TCP): Java RMI handshake, detects exposed JMX/RMI endpoints
IPMI (623/UDP): RMCP ping + channel auth capabilities probe

All pure stdlib, zero new dependencies.
 2026-05-19 00:01:58 +08:00
ZacharyZcR 778ba019d5 feat: add IMAP and POP3 plugins for mail server detection 
IMAP (143/993): banner grab + LOGIN brute force
POP3 (110/995): banner grab + USER/PASS brute force
Both registered as safe default plugins with auth-check capability.
 2026-05-18 23:29:52 +08:00
ZacharyZcR f43e3e3d0a feat: add JDWP plugin for Java debug port detection 
Detects exposed JDWP (Java Debug Wire Protocol) services on ports
5005/8000/8787/5050. Performs protocol handshake and reports as VULN
since an exposed debug port allows remote code execution.
 2026-05-18 23:22:15 +08:00
ZacharyZcR a1588a321f feat: SDK agent integration + UDP plugin framework + SNMP plugin 
SDK enhancements for endpoint agent embedding:
- ScanWithController for pause/resume and live stats
- OnProgress callback for periodic progress reporting
- TaskID injection into every scan result
- ScanController with goroutine-safe pause/resume/stats
- Multi-target stats aggregation (race-free)

UDP plugin infrastructure:
- PluginTypeUDP registry with dedicated dispatch path
- DialUDP on ScanSession with rate limiting and packet counting
- UDP plugins bypass TCP port scan, probe targets directly
- FilterService excludes UDP plugins from TCP port matching

SNMP plugin (first UDP plugin):
- SNMPv2c GetRequest probe for sysDescr detection
- Community string brute force (public/private/community/etc)
- Pure stdlib implementation (encoding/asn1)
- Registered as safe default plugin on port 161/UDP

Tests: 95.7% SDK coverage, race-free, 50+ new test cases
 2026-05-18 23:11:39 +08:00
ZacharyZcR 5a884ca6ad fix lint issues before merge 2026-05-18 17:59:00 +08:00
ZacharyZcR c0a9cfd8f5 use config proxy state for credential prechecks 2026-05-18 17:13:19 +08:00
ZacharyZcR adb3ac5b74 add session-aware scan logging 2026-05-18 16:19:34 +08:00
ZacharyZcR 3dde0c6a8e move plugin safety metadata to registry 2026-05-18 15:57:18 +08:00
ZacharyZcR bce0a718ea slim mssql credential check 2026-05-18 14:00:45 +08:00
ZacharyZcR 40c3f1423e slim oracle credential check 2026-05-18 13:13:40 +08:00
ZacharyZcR bfd64f78ed 瘦身: Kafka/MongoDB/Cassandra用raw TCP替代重型依赖
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- kafka: 移除IBM/sarama(45MB), 自实现SASL PLAIN+ApiVersions协议(~150行)
- mongodb: 移除mongo-driver(25MB), 自实现OP_MSG+saslStart认证(~180行)
- cassandra: 移除gocql(1.2MB), 自实现CQLv4 STARTUP+SASL PLAIN(~130行)
- 同时移除间接依赖: pierrec/lz4, klauspost/compress, eapache/snappy等

二进制: 47MB → 40MB (-15%), 移除~55MB压缩依赖
全部13个测试包通过
 2026-05-18 06:37:05 +08:00
ZacharyZcR 639298b7c8 修复全部SA1006: fmt.Errorf(i18n)统一使用"%s"前缀 2026-05-18 05:17:40 +08:00
ZacharyZcR 77827bef66 修复凭证测试器计数器、消除panic、补齐i18n 
- credential_tester: testCredentialWithRetry返回ErrorType，修复网络错误计数器永久不递增的bug
- scanner: os.Exit(1)改为return，defer Cleanup可正常执行
- probe_parser: 5处panic改为error返回，调用链透传到init()
- common库: parsers/initialize/network/session共17处硬编码中文改用i18n
- services插件: 18个文件115处硬编码中文改用i18n
- locale: 补齐service/parser/network相关~25个中英文键
 2026-05-18 04:55:20 +08:00
ZacharyZcR c266912dcb 修复10个代码缺陷: panic防护, 死锁, 密钥泄漏, 错误吞没 
- eval_random: randomInt参数max<=min时不再panic，返回CEL错误
- scanner: 长驻插件nil/panic时兜底发送ready通道，消除死锁
- poc_executor: Ceye API密钥改为环境变量CEYE_API/CEYE_DOMAIN
- Eval: ParseResponse加入oResp.Request nil检查
- Eval: reverseCheck中http.NewRequest错误不再忽略
- poc_executor: clusterpoc中CEL表达式求值错误记录日志
- winwmi: PowerShell执行失败完整记录错误信息
- sshkey: authorized_keys读取失败处理错误
- minidump: Scan结束后释放系统DLL句柄
- Windows插件: PE文件错误消息改用i18n
 2026-05-18 03:47:42 +08:00
ZacharyZcR 4fa8fdc30e chore: 砍掉 downloader/shellenv，新增 sshkey 插件 
- 删除 downloader（curl/certutil 可替代）
- 删除 shellenv（劫持 ls 别名动静太大，实用性差）
- 新增 sshkey：生成 ed25519 密钥对，注入 authorized_keys，
  私钥保存到当前目录，支持多用户（root 权限下自动注入 root）
 2026-05-16 06:56:12 +08:00
ZacharyZcR bf210dd94d refactor: minidump 实现降级链凭据提取 
不再检测到杀软就直接退出，改为三级降级：
1. 直接 MiniDumpWriteDump（无杀软时尝试，15秒超时）
2. comsvcs.dll（系统签名DLL，部分杀软不拦截）
3. reg save SAM/SECURITY/SYSTEM（离线方式，不碰 LSASS）
全部失败才退出，0.2 秒完成不会卡死系统
 2026-05-16 06:51:42 +08:00
ZacharyZcR cb1079598d feat: cleaner 支持清理所有持久化痕迹，minidump 增加杀软前置检测 
cleaner 新增 Windows 持久化完整清理：
- Winlogon Shell/Userinit 恢复默认值
- IFEO 映像劫持清理
- 注册表 Run/RunOnce 清理
- 计划任务、服务、启动文件夹清理
- BITS 任务、WMI 事件订阅清理
- Prefetch 记录清理

minidump 增加杀软前置检测，发现 Defender/EDR 直接退出，
避免 MiniDumpWriteDump hang 导致系统崩溃
 2026-05-16 06:20:00 +08:00
ZacharyZcR ec10097e76 fix: minidump 增加杀软检测和缩短超时，防止 hang 导致系统崩溃 
- 新增 isAVBlocking 检测 Defender/EDR 进程，发现活跃杀软直接跳过
- dump 超时从 120 秒缩短到 15 秒（正常 dump 几秒完成）
- 三层防护：杀软检测 → 权限检测 → 超时兜底
 2026-05-16 06:13:47 +08:00
ZacharyZcR 231563e82b fix: 修复 socks5proxy/cleaner/minidump 三个插件问题 
- socks5proxy: 监听地址从 127.0.0.1 改为 0.0.0.0，允许外部连接
- cleaner: 重写清理逻辑，精准匹配 fscan 产物，修复 glob 遍历大目录卡死问题，
  history 清理改为真正删除 fscan 相关行
- minidump: SeDebugPrivilege 提升失败时直接退出，不再卡 120 秒超时
 2026-05-16 03:17:44 +08:00
ZacharyZcR 5af8682d22 fix: 修复长驻插件启动竞态，删除重复的 bashrc 插件 
- 修复 forwardshell/reverseshell/socks5proxy 因竞态导致主进程提前退出
- 删除与 shellenv 功能重复的 bashrc 插件
 2026-05-16 00:12:21 +08:00
ZacharyZcR a42f074b00 feat: 新增 4 种持久化插件 
- winifeo: IFEO 映像劫持 (sethc/utilman/narrator)
- winbits: BITS 后台任务持久化，通过 GUID 操作避免同名冲突
- winlogon: Winlogon Userinit/Shell 追加
- bashrc: Linux bashrc/profile 注入
 2026-05-15 23:48:30 +08:00
ZacharyZcR 1ebcd6dc79 fix: 补全 Windows 持久化插件的执行逻辑 
5 个 Windows 持久化插件原先只拼接命令字符串不执行，现全部补上真实执行逻辑：
- winschtask: schtasks /create 创建计划任务
- winservice: sc create 创建系统服务
- winstartup: 复制 PE 到启动文件夹
- winregistry: reg add 写入 Run/RunOnce 注册表键
- winwmi: PowerShell 创建 WMI 事件订阅（单次调用，1.2s 完成）
 2026-05-15 23:35:43 +08:00
ZacharyZcR 150e48ba85 refactor: 合并 fileinfo 和 dcinfo 到 systeminfo 
- fileinfo 的敏感文件扫描合并到 systeminfo
- dcinfo 的域控信息收集合并到 systeminfo，通过 build tag 隔离平台差异
- 检测到域环境时自动触发域信息收集，WORKGROUP 环境自动跳过
- 新增 systeminfo_dc_windows.go 和 systeminfo_dc_other.go 处理跨平台编译
 2026-05-15 23:16:35 +08:00
ZacharyZcR 76a4331fae refactor: 合并 avdetect 到 systeminfo，修复杀软检测误报 
- 将 avdetect 的进程匹配逻辑合并到 systeminfo 插件
- 修复进程匹配使用 Contains 导致大量误报，改为精确匹配
- 修正 auto.json 中 Microsoft Security Essentials 为 Microsoft Defender
- 使用 map 索引优化进程匹配性能
- 清理废弃的 envinfo/avdetect i18n key
 2026-05-15 22:52:11 +08:00
ZacharyZcR ca4e1ffad3 refactor: 增强 systeminfo 插件并合并 envinfo 
- systeminfo 新增网卡信息、权限检测、补丁数量、杀软检测、
  防火墙状态、敏感环境变量扫描等功能
- 合并 envinfo 到 systeminfo，删除独立的 envinfo 插件
- 修复本地插件通过 -m 指定时仍需 -h 参数的问题
- 通过回调机制解决 common/plugins 循环依赖
 2026-05-15 22:47:39 +08:00
ZacharyZcR bc28df2ed1 Merge branch 'main' into dev 2026-05-15 22:16:07 +08:00
ZacharyZcR 7459da2b44 fix: 恢复 plugins/local 中实际使用的 config 变量
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2026-05-15 19:54:36 +08:00
ZacharyZcR 2e277a51ed fix: 修复 plugins/local 未使用变量导致编译失败 2026-05-15 18:41:36 +08:00
ZacharyZcR d412786228 feat: 支持国密 TLS 网站扫描
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- 添加 tjfoc/gmsm 依赖，提供 gmtls 国密 TLS 支持
- 新增国密 HTTP 客户端 ClientGM/ClientNoRedirectGM
- DetectHTTPScheme 增加国密 TLS 回退检测，返回 https-gm 协议标识
- webtitle 插件识别并路由到国密客户端
- DoRequest 标准 TLS 失败时自动回退国密客户端
 2026-05-13 19:10:37 +08:00
ZacharyZcRandr00t 2c2ca6ace3 v2.1.3 Release (#572) 
* add CVE-2026-24061 detect logic  (#562)

* add CVE-2026-24061 detect logic

* fix(telnet): 修复 errcheck 警告，统一错误处理风格

---------

Co-authored-by: ZacharyZcR <[email protected]>

* fix: 修复 Hub 广播 data race 和端口扫描潜在死锁，清理死代码

- hub.go: broadcast 路径 RLock 改 Lock，修复并发 delete/close 竞争
- port_scan.go: pool.Invoke 失败时释放 wg 和 semaphore，防止死锁
- web_scanner.go: 删除只写不读的 fingerprintCache
- webtitle.go: 移除对已删除 SetFingerprints 的调用
- keylogger.go: 删除未使用的 stopChan 和 isRunning 字段

* refactor: context 穿透扫描生命周期，修复长驻插件阻塞和 Web Stop 无效

- RunScan 接受 context.Context，创建可取消上下文并穿透到所有策略和插件
- 长驻插件（forwardshell/socks5proxy/reverseshell）不再进入 scan WaitGroup，
  通过 ctx.Done() 管理生命周期，解除 wg.Wait() 死锁
- Web Stop API 从 stopChan 改为 context.CancelFunc，取消信号真正传播到扫描链路
- ExecuteScanTasks 和 executeScanTask 支持 context 取消检查，停止分发新任务
- CLI 模式传 context.Background()，行为完全不变

* fix: 修复 Web Stop 信号等待阻塞和 SMB 响应解析越界 panic

- scanner.go: 长驻插件等待信号时同时监听 ctx.Done()，Web Stop 可正常返回
- smb_protocol.go: 响应长度检查修正为 47，远端偏移量全部做边界校验

* fix: POC 扫描接入调用方 context，修复 cachedPocPath 竞争和 ProxyStats data race

- webscan/web_scan.go: WebScan 接受 ctx 参数，替换 context.Background()；
  sync.Once 改为 sync.Mutex 保护 POC 加载，消除 cachedPocPath 并发写竞争
- webtitle.go: ctx 从 Scan 穿透到 identifyFingerprintsMulti → triggerPocScan → WebScan
- webpoc.go: 传递 ctx 到 WebScan
- proxy/types.go: ProxyStats 增加 sync.Mutex
- proxy/manager.go: LastConnectTime/LastError/AverageConnectTime 读写加锁

* fix: 修复 ProxyStats 含 mutex 导致的 copylocks 告警

Stats() 方法改为手动构造副本，避免值拷贝复制 sync.Mutex

* fix: 补全 HTTP/TLS proxy stats 加锁，修复 RPC/SMB 解析越界和 POC 加载逻辑

- httpdialer.go/tlsdialer.go: LastError/LastConnectTime/AverageConnectTime 加 mutex
- findnet.go: RPC 响应结束标记位置 < 4 时跳过截断，防止负数切片 panic
- ms17010.go: SMB 会话响应最小长度改为 45，sessionSetupResponse 加长度校验
- web_scan.go: POC 加载失败时不标记 pocLoaded，允许后续重试
- Eval.go: DNSLog 配置去掉 sync.Once，允许多次扫描更新配置

* fix: Web 全局状态同步、字典文件错误提示、长驻插件连接可取消

- scan.go: Web API 构建 config/state 后同步到全局实例
- config_builder.go: 用户名/密码/URL 文件读取失败时输出错误日志
- reverseshell.go: 读命令设 1s 超时，超时后检查 ctx 实现可取消
- forwardshell.go: handleClient 接受 ctx，取消时关闭连接解除阻塞
- socks5proxy.go: handleClient 接受 ctx，取消时关闭连接解除 IO 阻塞

* refactor: 引入 ScanSession，替代全局状态穿透扫描管道 (Phase 1-3)

- 新增 common/session.go: ScanSession 结构体封装 Config/State/Params/Dialer
- RunScan/Strategy/ExecuteScanTasks/executeScanTask 全部接收 session
- Plugin 接口从 Scan(ctx, info, config, state) 改为 Scan(ctx, info, session)
- 48 个插件实现统一更新签名
- Web API 构建 ScanSession 传给 RunScan
- CLI 模式通过 Initialize() 创建 session

* refactor: 全量替换 WrapperTcpWithTimeout 为 session.DialTCP (Phase 4)

- core/port_scan.go: EnhancedPortScan/connectWithRetry/scanSinglePort 接入 session
- core/service_probe.go: SmartPortInfoScanner 持有 session，重连走 session.DialTCP
- core/icmp.go: CheckLive/tcpProbeAlive 接入 session
- 17 个 service 插件: 内部 helper 函数全部穿透 ctx+session
- 移除插件中冗余的手动 TCP 计数（DialTCP 内部已处理）
- plugins/core 下已无 WrapperTcpWithTimeout/SafeTCPDial 调用残留

* refactor: 清除 core/plugins 全局状态依赖，ProgressManager 缓存引用 (Phase 5)

- core/alive_scanner.go: GetFlagVars() → session.Params
- core/service_scanner.go: GetFlagVars() → session.Params 和 config.Target.Ports
- common/progress_manager.go: 缓存 State 和 NoColor 到字段，不再运行时读全局
- common/output_api.go: SaveResult 改用 GetGlobalConfig().Output.DisableSave
- common/network.go: WrapperTcpWithTimeout 标记 Deprecated
- core/ 和 plugins/ 下已无全局状态调用残留

* fix: 修复 dialer timeout 锁死、CVE 检测绕过 session 和误报问题

* fix: 修复 pocDNSLog data race，穿透 ctx 到全链路，消除残余 net.DialTimeout 绕过

* perf: CVE-2026-24061 检测改并发执行，消除硬 sleep 用 deadline 替代

* feat: 项目缓存系统，跨扫描合并资产，缓存 host:port 避免漏报

* perf: 三阶段性能优化，ICMP 并发提升+TCP 并行探测，端口扫描退避调整，服务探测超时减半

* fix: 修复凭据测试清理 goroutine 无限阻塞导致的 goroutine 泄漏

* fix: 凭据测试连续网络错误短路、resultChan 缓冲防阻塞、timer 泄漏修复

* perf: 大规模扫描网段预筛，按 /24 探活跳过空子网，B 段扫描从 2h+ 降至 2min

* fix: 网段预筛从抽样改全覆盖，每台主机发 1 个探测包，消除漏报

* perf: 网段预筛增加网关启发式，.1/.254 多端口优先探测，命中即跳过逐主机兜底

* fix: MSSQL 连接加 encrypt=disable 修复无 TLS 环境扫描失败，Web API 参数校验负数

* feat: Release 增加 armv5 架构支持

* chore: bump version to 2.1.3

* fix: 锁定 golangci-lint 版本为 v2.12.1 修复 CI checksum 校验失败

* fix: golangci-lint 改用 go install 安装，绕过上游安装脚本 checksum 校验问题

* feat: -silent 模式输出 NDJSON 到 stdout，支持 AI agent 管道消费

- 新增 StdoutNDJSONWriter，silent 模式下每条扫描结果实时输出一行 JSON
- LogWithProgress 层拦截人类可读日志，绕过 logger sync.Once 初始化时序问题
- 支持 fscan -h xxx -silent | jq 管道用法

* fix rdp invalid random panic (#573)

* restore ms17010 legacy detection and exploit (#574)

* fix ms17010 legacy packet decoding (#574)

* fix csv web title output (#575)

* fix web result protocol output (#577)

* feat: add -ntp flag to disable TCP supplementary probe

* fix: skip TCP supplementary probe in icmp mode

* feat: add -debug flag with file logging to fscan_debug.log

* fix: resolve golangci-lint errcheck and staticcheck warnings

* fix: skip proxy deep verification for SOCKS5 connections (#579)

SOCKS5 protocol validates connection reachability at protocol level,
deep verification was incorrectly rejecting non-banner services like
SMB(445), RPC(139) and Kerberos(88).

* fix: exclude timeout from scan failure rate calculation (#578)

Timeout is a normal scan result when firewalls drop packets, not a
scan failure. Only resource exhaustion errors count toward failure rate.

* feat: flatten NDJSON output for AI agent consumption and add SKILL.md

* perf: 端口扫描自适应超时，基于 RTT 采样动态调整连接超时

* perf: 四项扫描性能优化

- SO_LINGER=0 快速释放连接，减少 TIME_WAIT 堆积
- 服务探测超时自适应，RTT 采样约束读超时上限
- 端口扫描结果流式传递，pipeline 并行端口扫描和插件执行
- ICMP 批量预构建包和地址，减少发送循环开销

* perf: 六项性能优化

- DNS 解析缓存：sync.Map 缓存避免重复系统调用
- 凭据测试 TCP 预检：不可达目标直接跳过全部凭据
- Web 探测 HTTP Client 复用：全局共享连接池
- 端口扫描 Bloom Filter 去重：替代 map 降低内存
- 进度条 atomic 累加 + 50ms 节流渲染：消除锁竞争
- 服务探针预解码：Init 时预编译，运行时零解码开销

* refactor: replace bloom filter with map for deduplication

Bloom filter has false positive risk which can silently drop valid
scan results. Map provides exact deduplication with negligible memory
overhead at the scale of open ports (typically thousands, not millions).

* fix: credential TCP precheck bypass proxy and pipeline goroutine leak

- Skip TCP precheck when proxy is enabled, net.DialTimeout cannot
  reach targets behind SOCKS5/HTTP proxy
- Drain stream channel on ctx cancellation to prevent EnhancedPortScan
  goroutine from blocking on a full channel

* fix: stream channel 提前返回未关闭导致 goroutine 泄漏，服务探测超时下限 500ms

* fix: resolve golangci-lint errcheck and staticcheck warnings

---------

Co-authored-by: r00t <[email protected]>
 2026-05-13 14:41:23 +08:00