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xmz7891
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443 lines
16 KiB
Python
443 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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"""Windows 防火墙处理。
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真机上踩到的坑（这是「能搜到但连不上」的最终根因）：
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Windows 防火墙的**阻止规则优先级高于放行规则**。
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当 Windows 弹「是否允许此应用通过防火墙」而用户点了取消时，
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系统会自动为该程序创建 Block 规则。
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只要存在一条针对本程序的 Block 规则，后面加多少条 Allow 都不管用。
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而且 Windows 是按**程序完整路径**建规则的 —— 换个目录解压就会
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再建一条，所以同一台机器上能攒下十几条。
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又因为防火墙不过滤回环(127.0.0.1)流量，本地自测会全部通过，
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真机却永远超时。这是最容易漏掉的一类问题。
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本模块负责：检测阻止规则 + 提权清理 + 重建放行。
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注意：netsh 的输出会跟随系统语言本地化（中文系统上是「规则名称/操作/阻止」），
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所以字段名必须中英文都认，不能只匹配英文。
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"""
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from __future__ import annotations
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import os
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import re
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import subprocess
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import sys
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IS_WINDOWS = sys.platform.startswith("win")
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RULE_TCP = "LAN Remote TCP"
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RULE_UDP = "LAN Remote UDP"
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# 程序级放行规则 —— 这是治本的那一条
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RULE_APP_TCP = "LAN Remote App TCP"
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RULE_APP_UDP = "LAN Remote App UDP"
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# Windows 自动创建的规则名 = 小写可执行文件名
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# 修复防火墙时要清掉的旧规则名。
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# ykxmz.exe 是现在的名字；lanremote-agent.exe 是改名前的老名字——
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# 保留它，好让老用户升级上来时把旧规则清掉，不然两条会打架。
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PROGRAM_RULE_NAMES = ("ykxmz.exe", "lanremote-agent.exe",
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"python.exe", "pythonw.exe")
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_NO_WINDOW = getattr(subprocess, "CREATE_NO_WINDOW", 0)
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# netsh 字段名（英文 / 中文）
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_FIELD_LABELS = {
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"RuleName": ("Rule Name", "规则名称"),
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"Enabled": ("Enabled", "已启用"),
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"Direction": ("Direction", "方向"),
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"Profiles": ("Profiles", "配置文件"),
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"Protocol": ("Protocol", "协议"),
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"LocalPort": ("LocalPort", "本地端口"),
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"Program": ("Program", "程序"),
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"Action": ("Action", "操作"),
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}
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_BLOCK_VALUES = ("block", "阻止")
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_ALLOW_VALUES = ("allow", "允许")
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_NO_MATCH_MARKERS = ("no rules match", "没有与指定条件", "没有与指定條件",
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"匹配的规则", "沒有")
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def _run(cmd: list[str], timeout: int = 30) -> subprocess.CompletedProcess:
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return subprocess.run(
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cmd, capture_output=True, timeout=timeout,
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creationflags=_NO_WINDOW,
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encoding="mbcs" if IS_WINDOWS else "utf-8", errors="replace")
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def executable_path() -> str:
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"""当前程序的可执行文件路径（打包后是 EXE，源码模式是 python.exe）。"""
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try:
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return os.path.abspath(sys.executable)
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except Exception:
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return ""
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def target_executable() -> str:
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"""修复脚本应该放行哪个程序。
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正常情况下就是当前进程自己（打包后 sys.executable 是 EXE）。
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但源码模式下它是 python.exe —— 如果机器上已经有一条指向打包版 EXE
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的程序级放行规则，就沿用那个目标，避免源码模式跑一次修复
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把打包版的规则冲掉（真机上就这么踩过一次）。
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"""
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current = executable_path()
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if getattr(sys, "frozen", False):
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return current
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existing = app_rule_program()
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base = os.path.basename(existing or "").lower()
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if (existing and base.endswith(".exe") and "python" not in base
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and os.path.isfile(existing)):
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return existing
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return current
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def app_rule_exists() -> bool:
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"""是否已经有针对本程序的放行规则。
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没有这条规则时，Windows 会在程序监听端口时弹窗询问；
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没人点「允许」就会自动生成阻止规则 —— 于是"删了又回来"。
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"""
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return rule_exists(RULE_APP_TCP) and rule_exists(RULE_APP_UDP)
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def app_rule_program() -> str:
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"""读出程序级放行规则实际指向的可执行文件。
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真机上踩到的坑：规则被写成了 python.exe（源码模式的值），
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于是打包后的 ykxmz.exe 仍然没有程序级放行，
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系统继续自动生成阻止规则 —— 表现为"删了又回来"。
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所以必须核对路径，不能只看规则是否存在。
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"""
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if not IS_WINDOWS:
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return ""
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try:
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proc = _run(["netsh", "advfirewall", "firewall", "show", "rule",
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f"name={RULE_APP_TCP}", "verbose"])
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except Exception:
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return ""
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for info in _split_rules(proc.stdout or ""):
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program = (info.get("Program") or "").strip('"')
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if program:
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return program
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return ""
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def app_rule_ok() -> bool:
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"""程序级放行规则存在，**且**指向当前真正运行的这个可执行文件。"""
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if not app_rule_exists():
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return False
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want = executable_path()
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got = app_rule_program()
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if not want or not got:
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return False
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return os.path.normcase(os.path.abspath(got)) == os.path.normcase(os.path.abspath(want))
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def is_elevated() -> bool:
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if not IS_WINDOWS:
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return hasattr(os, "geteuid") and os.geteuid() == 0
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try:
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import ctypes
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return bool(ctypes.windll.shell32.IsUserAnAdmin())
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except Exception:
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return False
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def _parse_fields(chunk: str) -> dict:
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"""把一段 netsh 规则文本解析成字段字典（中英文冒号都支持）。"""
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info: dict = {}
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for raw in chunk.splitlines():
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line = raw.strip()
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if not line or ("=" in line and ":" not in line and "：" not in line):
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continue
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parts = re.split(r"[:：]", line, maxsplit=1)
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if len(parts) != 2:
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continue
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label = parts[0].strip()
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value = parts[1].strip()
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for key, aliases in _FIELD_LABELS.items():
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if label in aliases:
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info[key] = value
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break
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return info
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def _split_rules(text: str) -> list[dict]:
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"""把 netsh 的长输出切成一条条规则。"""
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rules = []
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for chunk in re.split(r"\r?\n\r?\n", text or ""):
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info = _parse_fields(chunk)
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if info.get("RuleName"):
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rules.append(info)
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return rules
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def rule_exists(rule_name: str) -> bool:
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if not IS_WINDOWS:
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return True
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try:
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proc = _run(["netsh", "advfirewall", "firewall", "show", "rule",
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f"name={rule_name}"])
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except Exception:
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return False
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if proc.returncode != 0:
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return False
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text = ((proc.stdout or "") + (proc.stderr or "")).lower()
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for marker in _NO_MATCH_MARKERS:
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if marker in text:
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return False
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# 输出为空（或明显不是规则详情）时**不能**当成"规则存在" ——
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# 本地化提示语没收录、netsh 被拦、超时都可能给出空输出，
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# 那时候报"已放行"就是在骗用户。
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if len(text.strip()) < 10:
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return False
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if rule_name.lower() not in text:
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return False
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return True
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def _port_hits(info: dict, ports: tuple) -> bool:
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"""这条规则的 LocalPort 是否命中我们关心的端口。"""
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raw = (info.get("LocalPort") or "").strip()
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if not raw or raw.lower() in ("any", "任意"):
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return False
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pieces = [p.strip() for p in raw.replace("，", ",").split(",")]
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for piece in pieces:
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if not piece:
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continue
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for port in ports:
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if not port:
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continue
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if piece == str(port):
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return True
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# 端口段，如 8000-9000
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if "-" in piece:
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try:
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low, high = piece.split("-", 1)
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if int(low) <= int(port) <= int(high):
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return True
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except ValueError:
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continue
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return False
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def list_block_rules(tcp_port: int = 0, udp_port: int = 0) -> list[dict]:
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"""列出可能挡住我们的入站阻止规则。
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两类都算：
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* 程序级：Program 指向 lanremote-agent.exe / python.exe
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* 端口级：LocalPort 命中我们的 TCP/UDP 端口
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第二类原来完全没覆盖。而"UDP 能搜到、TCP 连不上"往往就是
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一条按端口封的规则 —— 组策略、第三方安全软件、手工建规则都会这样。
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"""
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if not IS_WINDOWS:
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return []
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try:
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proc = _run(["netsh", "advfirewall", "firewall", "show", "rule",
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"name=all", "dir=in", "verbose"], timeout=60)
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except Exception:
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return []
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blocks: list[dict] = []
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for info in _split_rules(proc.stdout or ""):
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action = (info.get("Action") or "").strip().lower()
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if action not in _BLOCK_VALUES:
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continue
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program = (info.get("Program") or "").strip('"')
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base = os.path.basename(program).lower() if program else ""
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if base in PROGRAM_RULE_NAMES:
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info["ProgramBase"] = base
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info["Kind"] = "program"
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blocks.append(info)
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continue
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if _port_hits(info, (tcp_port, udp_port)):
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info["Kind"] = "port"
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blocks.append(info)
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return blocks
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def check(tcp_port: int, udp_port: int) -> dict:
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"""综合状态：放行规则 + 阻止规则。"""
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if not IS_WINDOWS:
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return {"supported": False, "ok": True, "elevated": True,
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"tcp": True, "udp": True, "blocked": [], "blocked_count": 0,
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"message": "非 Windows，无需处理"}
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tcp = rule_exists(RULE_TCP)
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udp = rule_exists(RULE_UDP)
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app_rule = app_rule_ok()
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elevated = is_elevated()
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# 阻止规则按程序完整路径生效，所以只统计**针对当前这份程序**的。
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# 测试目录的副本、源码模式下的 python.exe 被阻止，与本安装无关，
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# 不该在这里报红（真机上就是这么误报的）。
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all_blocked = list_block_rules(tcp_port, udp_port)
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exe_now = executable_path()
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if exe_now:
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want = os.path.normcase(os.path.abspath(exe_now))
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blocked = [
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item for item in all_blocked
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if os.path.normcase(
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os.path.abspath((item.get("Program") or "").strip('"'))) == want
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]
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else:
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blocked = all_blocked
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blocked_others = len(all_blocked) - len(blocked)
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# 「能不能连上」只看两件事：端口放行在不在 + 有没有阻止规则。
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# 程序级放行影响的是「以后会不会复发」，不影响当下能不能连。
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ok = tcp and udp and not blocked
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if not ok:
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severity = "error"
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if blocked:
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message = f"存在 {len(blocked)} 条阻止规则（优先级高于放行，必须清掉）"
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elif not (tcp and udp):
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message = ("端口放行规则缺失，其他设备连不上"
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if not elevated
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else "端口放行规则缺失（当前是管理员，可直接修复）")
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else:
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message = "防火墙未放行，其他设备无法连接"
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elif not app_rule:
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severity = "warn"
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got = app_rule_program()
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if app_rule_exists() and got:
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message = ("能连上。但程序级放行规则指向的不是当前这份程序，"
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"以后系统可能再生成阻止规则，建议修复一次")
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else:
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message = ("能连上。但缺少程序级放行规则，"
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"以后系统可能再生成阻止规则，建议修复一次")
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else:
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severity = "ok"
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message = "防火墙已放行"
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return {
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"supported": True,
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"tcp": tcp,
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"udp": udp,
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"app_rule": app_rule,
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"app_rule_program": app_rule_program(),
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"blocked": blocked,
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"blocked_count": len(blocked),
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"blocked_others": blocked_others,
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"ok": ok,
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"severity": severity,
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"elevated": elevated,
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"message": message,
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"tcp_port": tcp_port,
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"udp_port": udp_port,
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}
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def build_script(tcp_port: int, udp_port: int,
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program_names: tuple[str, ...] = PROGRAM_RULE_NAMES) -> str:
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"""生成提权修复脚本：先删阻止规则，再重建放行规则。"""
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lines = [
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"@echo off",
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"chcp 936 >nul",
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"setlocal",
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'echo [1/4] 删除针对本程序的「阻止」规则 ...',
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]
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for name in program_names:
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lines.append(f'netsh advfirewall firewall delete rule name="{name}" dir=in >nul 2>nul')
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lines += [
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'echo [2/4] 删除旧的放行规则 ...',
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f'netsh advfirewall firewall delete rule name="{RULE_TCP}" >nul 2>nul',
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f'netsh advfirewall firewall delete rule name="{RULE_UDP}" >nul 2>nul',
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'echo [3/4] 重新放行 ...',
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f'netsh advfirewall firewall add rule name="{RULE_TCP}" '
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f'dir=in action=allow protocol=TCP localport={tcp_port} profile=any',
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f'netsh advfirewall firewall add rule name="{RULE_UDP}" '
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f'dir=in action=allow protocol=UDP localport={udp_port} profile=any',
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"echo.",
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"echo ------------------------------------------------------------",
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"echo [4/4] 添加程序级放行（治本：防止系统再自动生成阻止规则）...",
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"echo ------------------------------------------------------------",
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]
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exe = target_executable()
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if exe:
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lines += [
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f'netsh advfirewall firewall delete rule name="{RULE_APP_TCP}" >nul 2>nul',
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f'netsh advfirewall firewall delete rule name="{RULE_APP_UDP}" >nul 2>nul',
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f'netsh advfirewall firewall add rule name="{RULE_APP_TCP}" '
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f'dir=in action=allow program="{exe}" enable=yes protocol=TCP profile=any',
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f'netsh advfirewall firewall add rule name="{RULE_APP_UDP}" '
|
||
f'dir=in action=allow program="{exe}" enable=yes protocol=UDP profile=any',
|
||
"echo.",
|
||
]
|
||
lines += [
|
||
"echo 完成。",
|
||
"endlocal",
|
||
"exit /b 0",
|
||
"",
|
||
]
|
||
return "\r\n".join(lines)
|
||
|
||
|
||
def write_script(tcp_port: int, udp_port: int) -> str:
|
||
"""写一份可手动右键运行的修复脚本，放在程序目录。"""
|
||
from .config import app_dir
|
||
path = app_dir() / "fxfhq.bat"
|
||
try:
|
||
# .bat 必须用 GBK 存盘，且 build_script 已保证 CRLF 换行；
|
||
# 裸 LF 会让 cmd 逐段误读，把每条命令都当成无效命令
|
||
path.write_text(build_script(tcp_port, udp_port), encoding="gbk", errors="replace")
|
||
except OSError:
|
||
pass
|
||
return str(path)
|
||
|
||
|
||
def apply_elevated(tcp_port: int, udp_port: int) -> tuple[bool, str]:
|
||
"""提权执行修复。会弹一次 UAC。"""
|
||
if not IS_WINDOWS:
|
||
return False, "仅支持 Windows"
|
||
|
||
script_path = write_script(tcp_port, udp_port)
|
||
if not os.path.isfile(script_path):
|
||
return False, "无法写入修复脚本"
|
||
|
||
if is_elevated():
|
||
try:
|
||
proc = _run(["cmd", "/c", script_path], timeout=90)
|
||
ok = rule_exists(RULE_TCP) and not list_block_rules()
|
||
detail = (proc.stdout or proc.stderr or "").strip()
|
||
return ok, ("已修复（管理员权限）" if ok else f"未完全生效：{detail[:160]}")
|
||
except Exception as exc: # noqa: BLE001
|
||
return False, f"执行失败: {exc}"
|
||
|
||
try:
|
||
proc = subprocess.run(
|
||
["powershell", "-NoProfile", "-Command",
|
||
f"Start-Process -FilePath '{script_path}' -Verb RunAs -Wait"],
|
||
capture_output=True, timeout=240, creationflags=_NO_WINDOW,
|
||
encoding="mbcs", errors="replace")
|
||
except subprocess.TimeoutExpired:
|
||
return False, "提权操作超时"
|
||
except Exception as exc: # noqa: BLE001
|
||
return False, f"提权失败: {exc}"
|
||
|
||
ok = rule_exists(RULE_TCP) and not list_block_rules()
|
||
if ok:
|
||
return True, "已修复"
|
||
combined = ((proc.stdout or "") + (proc.stderr or "")).strip()
|
||
if "canceled" in combined.lower() or "取消" in combined:
|
||
return False, "你取消了管理员授权"
|
||
return False, "修复未完全生效，请手动右键运行「fxfhq.bat」"
|
||
|
||
|
||
def manual_hint(tcp_port: int, udp_port: int) -> str:
|
||
names = " / ".join(f'"{n}"' for n in PROGRAM_RULE_NAMES)
|
||
return (
|
||
"手动修复（管理员 PowerShell）：\n"
|
||
f" netsh advfirewall firewall delete rule name={names} dir=in\n"
|
||
f' netsh advfirewall firewall add rule name="{RULE_TCP}" '
|
||
f"dir=in action=allow protocol=TCP localport={tcp_port} profile=any\n"
|
||
f' netsh advfirewall firewall add rule name="{RULE_UDP}" '
|
||
f"dir=in action=allow protocol=UDP localport={udp_port} profile=any"
|
||
)
|