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