123 lines
3.0 KiB
Python
123 lines
3.0 KiB
Python
"""
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以“计划任务(最高权限)”方式执行静默覆盖更新。
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工作流：
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- 主程序（普通权限）下载新 exe 到可写目录（建议 ProgramData）并写入 update_request.json
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- 计划任务以 SYSTEM/管理员身份运行本程序
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- 本程序读取请求文件 -> 等待主程序退出 -> 覆盖安装目录 exe -> 重启 -> 清理请求文件
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"""
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from __future__ import annotations
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import json
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import os
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import subprocess
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import sys
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import time
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APP_NAME = "CleanDesktopOrganizer"
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REQUEST_FILE = "update_request.json"
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def _programdata_dir() -> str:
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base = os.environ.get("PROGRAMDATA") or r"C:\ProgramData"
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return os.path.join(base, APP_NAME)
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def _request_path() -> str:
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return os.path.join(_programdata_dir(), REQUEST_FILE)
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def _read_request() -> dict:
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p = _request_path()
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with open(p, "r", encoding="utf-8") as f:
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return json.load(f)
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def _pid_exists(pid: int) -> bool:
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if pid <= 0:
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return False
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try:
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# tasklist 不需要管理员权限，SYSTEM 下也可用
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out = subprocess.run(
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["tasklist", "/FI", f"PID eq {pid}"],
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capture_output=True,
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text=True,
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encoding="utf-8",
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errors="replace",
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creationflags=subprocess.CREATE_NO_WINDOW,
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).stdout
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return str(pid) in out
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except Exception:
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return False
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def _copy_with_retries(src: str, dst: str, retries: int = 10) -> bool:
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for _ in range(max(1, retries)):
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try:
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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if os.path.exists(dst):
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try:
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os.chmod(dst, 0o666)
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except Exception:
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pass
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# 用二进制流复制，避免权限/锁问题时直接抛错
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with open(src, "rb") as rf:
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data = rf.read()
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with open(dst, "wb") as wf:
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wf.write(data)
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return True
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except Exception:
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time.sleep(0.8)
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return False
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def main() -> int:
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try:
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req = _read_request()
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except FileNotFoundError:
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return 0
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except Exception:
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return 2
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src = str(req.get("src") or "")
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dst = str(req.get("dst") or "")
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pid = int(req.get("pid") or 0)
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restart = bool(req.get("restart", True))
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if not src or not dst:
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return 3
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# 等待主程序退出，最多 60 秒
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waited = 0.0
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while _pid_exists(pid) and waited < 60.0:
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time.sleep(0.5)
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waited += 0.5
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ok = _copy_with_retries(src, dst, retries=15)
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try:
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os.remove(src)
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except Exception:
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pass
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# 清理请求文件（成功/失败都尽量清掉，避免重复执行）
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try:
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os.remove(_request_path())
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except Exception:
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pass
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if ok and restart:
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try:
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subprocess.Popen([dst], creationflags=subprocess.DETACHED_PROCESS | subprocess.CREATE_NO_WINDOW)
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except Exception:
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pass
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return 0
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return 4
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if __name__ == "__main__":
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raise SystemExit(main())
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