W5波+N-19收口:FTP鉴权落地、Trap25三连定案修复(N-30)、N-20/N-23/N-26

N-19 FTP 鉴权:
- lftpd_auth(USER/PASS 状态机 + 连续5次失败锁60s)+ SHA-256
  (user||pwd) 口令哈希;config.ini [ftp] 段 user/pwd_hash/write,
  出厂 admin/admin 在用有启动告警;lftpd_log.c 删除并入 lftpd_auth
- ftp_cfg 配置读写;台架 ftp_auth_bench.py 13/13

N-30 / Trap 25(CH395F_Trap_Records.md 四次定案全记录):
- 修复1 closed-with-data accept:客户端发完正常 FIN 后芯片按
  FUN_PARA(0x09) §5.52② 保留 Socket+RX 缓冲,旧代码把 CLOSED 一律
  relisten 自毁缓冲 → STOR 必挂 425;改为接受"已关但可读"连接排空
- 修复2 丢 CONNECT 中断探针 net_lost_connect_probe + last_peer_port
  幽灵甄别(拆链窗口握手完成但中断丢失,双信源去抖补 accept)
- 修复3 send_list/send_nlst 批量单发:背靠背 ~60B 小段毒化芯片 TX
  (芯片报 SEND_OK 但对端全丢),整份目录一次性写入
- 证伪存档:固定沉降/Socket 轮换冷却/listen 门控(台架 v7 矩阵)
- 台架工具 test/board/ch395f_reuse_bench.{c,h} + host 脚本存档
  (不注册编译;实验分支 n30-chip-bench 保留)

N-20:Error_Handler 死循环降级(记录+复位路径)
N-23:scripts/check_registration.py 双端注册反向校验(pre-commit)
N-26:GD5F NAND 直 DMA 调用方缓冲窗口断言

验证:BUILD_OK 0/0;ftp_regression 连跑 4 轮 11/11(修复前
LIST#4/#7 100% 挂、STOR#2 曾 100% 425);ftp_auth_bench 13/13;
@test 启动标记 PASS;ci_local L0+L0.5 全过;doc-links 通过。
登记簿 N-30 已销项。
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""FTP 鉴权台架回归(N-19,需真机在线)
验证固件侧 lftpd 鉴权集成的完整行为矩阵(主机单测 test/host/ftp_auth 覆盖
不到的"协议接线"部分:命令门、530/331/230/550 响应码、跨会话锁定):
T1 匿名登录(anonymous) → 期望 530 拒
T2 未登录直接 NLST → 期望 530(命令门)
T3 对用户名 + 错口令 ×5 → 期望 530 ×5(并触发锁定)
T4 锁定窗内正确口令 → 期望 530(LOCKED,不算哈希)
T5 等待锁定期满后正确口令 → 期望 230(60s + 余量)
T6 登录后 NLST / STOR / RETR / DELE → 期望全通(出厂 write=1)
T7 会话结束重连、错口令一次 → 期望 530 且计数已清零(T5 成功清零)
注意:CH395F 单连接——每步用完必须 quit() 释放 socket,否则下一步连不上;
跑之前确保 UI 远程显示(7003)/对时(8888)客户端未占用 socket。
用法(设备默认 192.168.1.100,出厂口令 admin/admin):
& '.venv\\Scripts\\python.exe' test/host/ftp_auth_bench.py
改过口令: ... --pwd <新口令>
跳过 60s 锁定等待(只验锁定触发不验解锁): ... --skip-unlock
退出码:0=全部通过 / 1=任一失败 / 2=环境错误(连不上设备)
创建日期:2026-10-11
"""
import argparse
import io
import socket
import sys
import time
from ftplib import FTP, error_perm
LOCK_WAIT_S = 62 # 固件锁定 60 s + 余量
def _try_login(host, port, timeout, user, pwd):
"""尝试一次登录;返回 (ok, code_or_exc)。失败不断言连接状态。
单连接 socket:上一次会话结束后 net 层 auto_relisten ~50 ms,但 accept
失败会走"毁监听→重建"路径(3 s 重试窗)→ connect 被拒时重试 3 次。
"""
f = FTP()
last_err = None
for attempt in range(3):
try:
time.sleep(0.5)
f.connect(host, port, timeout=timeout)
break
except (ConnectionRefusedError, socket.timeout, OSError) as e:
last_err = e
f = FTP()
else:
return None, repr(last_err), None
try:
try:
f.login(user, pwd)
return True, "230", f
except error_perm as e:
f.close()
return False, str(e), None
except (socket.timeout, OSError) as e:
return None, repr(e), None
def main(argv=None):
ap = argparse.ArgumentParser(description="FTP auth bench matrix (N-19)")
ap.add_argument("--host", default="192.168.1.100")
ap.add_argument("--port", type=int, default=21)
ap.add_argument("--timeout", type=int, default=15)
ap.add_argument("--user", default="admin")
ap.add_argument("--pwd", default="admin")
ap.add_argument("--skip-unlock", action="store_true",
help="不验 60s 解锁(省 1 分钟;锁定触发仍验)")
args = ap.parse_args(argv)
fails = []
def expect(name, cond, detail=""):
tag = "PASS" if cond else "FAIL"
print(" [%s] %s %s" % (tag, name, detail))
if not cond:
fails.append(name)
# ---- T1 匿名登录被拒 ----
ok, code, conn = _try_login(args.host, args.port, args.timeout, "anonymous", "x@x")
if ok is None:
print("[env] 连不上 %s:%d → %s" % (args.host, args.port, code))
return 2
expect("T1 匿名登录 → 530", (ok is False) and code.startswith("530"), code)
if conn:
conn.quit()
# ---- T2 未登录直接 NLST → 530(命令门)----
time.sleep(0.5) # 单连接 socket:等 auto_relisten 沉降(~50 ms + 余量)
f = FTP()
f.connect(args.host, args.port, timeout=args.timeout)
try:
f.sendcmd("NLST")
expect("T2 未登录 NLST → 530", False, "居然放行")
except error_perm as e:
expect("T2 未登录 NLST → 530", str(e).startswith("530"), str(e))
except Exception as e: # noqa: BLE001
expect("T2 未登录 NLST → 530", False, repr(e))
# ⚠ 必须 close:单连接模型下不关 = 占住 socket,后续步骤全被拒
# (2026-10-11 台架实测:QUIT 后不 close → 芯片视角旧连接仍 ESTABLISHED)
try:
f.quit()
except Exception: # noqa: BLE001
try:
f.close()
except Exception: # noqa: BLE001
pass
time.sleep(0.5)
# ---- T3 错口令 ×5 → 530 ×5 ----
for i in range(1, 6):
ok, code, conn = _try_login(args.host, args.port, args.timeout,
args.user, "wrong-pass-%d" % i)
expect("T3.%d 错口令 → 530" % i, (ok is False) and code.startswith("530"), code)
if conn:
conn.quit()
# ---- T4 锁定窗内正确口令 → 530 ----
ok, code, conn = _try_login(args.host, args.port, args.timeout, args.user, args.pwd)
expect("T4 锁定窗内对口令 → 530", (ok is False) and code.startswith("530"), code)
if conn:
conn.quit()
if args.skip_unlock:
print("[skip] 未验 60s 解锁(--skip-unlock)")
else:
# ---- T5 期满正确口令 → 230 ----
print(" [wait] 等锁定期满 %d s ..." % LOCK_WAIT_S)
time.sleep(LOCK_WAIT_S)
ok, code, conn = _try_login(args.host, args.port, args.timeout,
args.user, args.pwd)
expect("T5 期满对口令 → 230", ok is True, code)
if conn:
# ---- T6 登录后读写全通(出厂 write=1)----
try:
names = conn.nlst()
expect("T6a NLST", len(names) >= 0, "%d 项" % len(names))
payload = b"N19-auth-bench-" + b"X" * 500
conn.storbinary("STOR n19t.tmp", io.BytesIO(payload))
got = io.BytesIO()
conn.retrbinary("RETR n19t.tmp", got.write)
expect("T6b STOR/RETR 往返一致", got.getvalue() == payload)
conn.delete("n19t.tmp")
expect("T6c DELE", True)
except Exception as e: # noqa: BLE001
expect("T6 登录后读写", False, repr(e))
# ---- T7 成功已清零计数:本会话退出后错一次只算 1(不锁)----
conn.quit()
ok, code, conn = _try_login(args.host, args.port, args.timeout,
args.user, "one-wrong")
expect("T7 成功后错 1 次 → 530 且未锁(下次对口令可登)",
(ok is False) and code.startswith("530"), code)
if conn:
conn.quit()
ok, code, conn = _try_login(args.host, args.port, args.timeout,
args.user, args.pwd)
expect("T7b 紧接对口令 → 230", ok is True, code)
if conn:
conn.quit()
print("\nVERDICT: %s (%d fail)" % ("PASS" if not fails else "FAIL", len(fails)))
return 0 if not fails else 1
if __name__ == "__main__":
sys.exit(main())