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# -*- coding: utf-8 -*-
"""配对限速改成按来源 IP。
之前是全局计数:局域网里任何人发 10 个错码,就会把**合法用户**也锁在门外
5 分钟 —— 这本身是个拒绝服务的口子。
改成按来源 IP 分别计数:攻击者只能锁住自己。
"""
from __future__ import annotations
import sys
from pathlib import Path
SERVER = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
r"\lanremote\server.py")
FIXES = [
(''' # 防暴力枚举:6 位数字只有 100 万种,不限速的话局域网里慢慢试就行。
now = time.time()
self._pair_failures = [t for t in getattr(self, "_pair_failures", [])
if now - t < 300]
if len(self._pair_failures) >= 10:
wait = max(1, int(300 - (now - self._pair_failures[0])))
self._log(f"[配对] 失败次数过多,锁定中({wait} 秒)")
return {"ok": False,
"error": f"配对码错误次数过多,请等 {wait} 秒后再试"}
# 用 compare_digest,避免按字符比较带来的时间侧信道
if not secrets.compare_digest(code, expected):
self._pair_failures.append(now)
self._log(f"[配对失败] 来自 {session.addr[0]},配对码不匹配"
f"({len(self._pair_failures)}/10)")
return {"ok": False, "error": "配对码错误"}
self._pair_failures = []''',
''' # 防暴力枚举:6 位数字只有 100 万种,不限速的话局域网里慢慢试就行。
# 按**来源 IP**分别计数 —— 全局计数的话,别人发 10 个错码
# 就能把你这个合法用户也锁在门外,那本身就是个拒绝服务的口子。
now = time.time()
ip = session.addr[0]
buckets = getattr(self, "_pair_failures", None)
if not isinstance(buckets, dict):
buckets = {}
mine = [t for t in buckets.get(ip, []) if now - t < 300]
buckets = {k: [t for t in v if now - t < 300]
for k, v in buckets.items() if any(now - t < 300 for t in v)}
buckets[ip] = mine
self._pair_failures = buckets
if len(mine) >= 10:
wait = max(1, int(300 - (now - mine[0])))
self._log(f"[配对] {ip} 失败次数过多,锁定中({wait} 秒)")
return {"ok": False,
"error": f"配对码错误次数过多,请等 {wait} 秒后再试"}
# 用 compare_digest,避免按字符比较带来的时间侧信道
if not secrets.compare_digest(code, expected):
mine.append(now)
self._log(f"[配对失败] 来自 {ip},配对码不匹配({len(mine)}/10)")
return {"ok": False, "error": "配对码错误"}
self._pair_failures[ip] = []'''),
(" # 最近的配对失败时间戳,用于限速防枚举\n"
" self._pair_failures: list[float] = []",
" # 配对失败记录:{来源 IP: [时间戳]},用于限速防枚举\n"
" self._pair_failures: dict = {}"),
]
def main() -> int:
text = SERVER.read_text(encoding="utf-8")
ok = True
for old, new in FIXES:
if old not in text:
print(f" [跳过] 锚点没找到: {old.strip().splitlines()[0][:50]}")
ok = False
continue
text = text.replace(old, new, 1)
print(" 一处已改")
if ok:
SERVER.write_text(text, encoding="utf-8")
import ast
try:
ast.parse(SERVER.read_text(encoding="utf-8"))
print(" server.py: 语法 OK")
except SyntaxError as exc:
print(f" server.py: 语法错误 {exc}")
ok = False
return 0 if ok else 1
if __name__ == "__main__":
sys.exit(main())