Files
blackbird/aibox/common/atomic.py
T
qing 457bb900fb fix(aibox): round-5 audit batch K - max_turns clamp, task input validation, XSS hardening, atomic writes, broadcast timeout
第五轮审计(J1~J16)全量修复 + 子代理 max_turns 钳制:
- 子代理 max_turns 钳制(0/None 回退默认 10,负数钳制 1)+ 14 项回归测试
- J1 任务系统投毒:add_memo 入库校验(时间/间隔/类型)、调度器预检与触发事务
  防御、展示路径兜底、register 移入 try、add_user_task 补 repeat_end_time 透传
- J2/J13 前端 XSS:三页面 marked 输出经 DOMPurify 净化、entry1 系统消息/任务
  分隔条改 textContent、CDN 脚本补 SRI
- J3 FTS 删除换序(先 fts 后内容表,索引不再残留)
- J5 原子写推广:新增 common/atomic.py(mkstemp+fsync+os.replace),config/prompt/
  history 全部接入;损坏配置备份后回退
- J6 单例初始化加锁(PromptManager/ConfigManager 并发首例不双重加载)
- J7 broadcast 并发发送 + wait_for 超时回收僵死连接
- J4/J8/J9~J12/J14~J16:验证异常脱敏、交互输入容错、MemoDatabase WAL+busy_timeout、
  memo 批量删除、/new 竞态、skills 引号转义、voice_client 清理、死代码移除、
  skill_manager 同名键/help 截断
2026-08-19 07:01:13 +08:00

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#!/usr/bin/env python3
"""
common.atomic - 原子写文件工具(J5,审计 2026-08-19)
同目录 mkstemp 临时文件 + fsync + os.replace:进程中断/断电不留半截文件;
mkstemp 随机文件名避免多进程并发写同路径互踩(conversation_history 旧实现
的固定 .tmp 名在并发场景会互相覆盖)。仅依赖标准库,供 common/subsystems
各写路径复用。
"""
import os
import tempfile
def atomic_write_text(path: str, content: str) -> None:
"""原子写文本文件。失败时清理临时文件并抛出原异常。"""
path = os.path.expanduser(path)
directory = os.path.dirname(path) or "."
os.makedirs(directory, exist_ok=True)
fd, tmp_path = tempfile.mkstemp(prefix=".aibox_tmp_", dir=directory)
try:
with os.fdopen(fd, "w", encoding="utf-8") as f:
f.write(content)
f.flush()
os.fsync(f.fileno())
os.replace(tmp_path, path)
except BaseException:
try:
os.unlink(tmp_path)
except OSError:
pass
raise