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5.09 kB
| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| """复现本轮最硬的一条发现:原作者的只读 SQL 接口【没有表名白名单】。 | |
| 它拦得住写操作,拦不住"读取任意表"——`SELECT name FROM sqlite_master` | |
| 可以读出整个库的结构。 | |
| 本脚本不启动任何服务、不装任何依赖、不写入原仓库:直接把原仓库的 | |
| `engine/query.py` 作为模块加载,用一个临时 sqlite 库调用它,把真实返回打印出来。 | |
| 用法: | |
| python repro/verify_sql_gap.py # 自动浅克隆原仓库到临时目录 | |
| python repro/verify_sql_gap.py --repo <路径> # 用已有的本地克隆 | |
| 退出码: | |
| 0 = 复现成功(发现成立:任意表读取被放行) | |
| 1 = 无法复现(发现可能已被上游修复) | |
| """ | |
| from __future__ import annotations | |
| import argparse | |
| import importlib.util | |
| import os | |
| import shutil | |
| import sqlite3 | |
| import subprocess | |
| import sys | |
| import tempfile | |
| REPO_URL = "https://github.com/sharptoolbox/WorkBuddy-AppBuilderSkill.git" | |
| ENGINE_QUERY = os.path.join("engine", "query.py") | |
| PROBE = "SELECT name FROM sqlite_master" # 读取整个库的结构 | |
| WRITE_PROBE = "DELETE FROM demo" # 对照组:写操作 | |
| def load_module(path: str, name: str): | |
| spec = importlib.util.spec_from_file_location(name, path) | |
| mod = importlib.util.module_from_spec(spec) | |
| sys.modules[name] = mod | |
| spec.loader.exec_module(mod) | |
| return mod | |
| def make_db(path: str) -> sqlite3.Connection: | |
| conn = sqlite3.connect(path) | |
| conn.row_factory = sqlite3.Row | |
| conn.execute("CREATE TABLE demo (id TEXT PRIMARY KEY, secret TEXT)") | |
| conn.execute("CREATE TABLE hidden_audit_log (id INTEGER PRIMARY KEY, note TEXT)") | |
| conn.execute("INSERT INTO demo VALUES ('1', 'should-not-be-readable-by-design')") | |
| conn.commit() | |
| return conn | |
| def main() -> int: | |
| ap = argparse.ArgumentParser() | |
| ap.add_argument("--repo", help="已有的本地克隆路径(不给则自动浅克隆)") | |
| args = ap.parse_args() | |
| tmp = None | |
| repo = args.repo | |
| if not repo: | |
| tmp = tempfile.mkdtemp(prefix="sqlgap_") | |
| repo = os.path.join(tmp, "WorkBuddy-AppBuilderSkill") | |
| print(f"[1/4] 浅克隆原仓库 → {repo}") | |
| r = subprocess.run(["git", "clone", "--depth", "1", "-q", REPO_URL, repo], | |
| capture_output=True, text=True) | |
| if r.returncode != 0: | |
| print(" 克隆失败:", r.stderr.strip()[:200]) | |
| print(" (网络不可用时,可用 --repo 指向已有克隆)") | |
| return 1 | |
| else: | |
| print(f"[1/4] 使用本地克隆 → {repo}") | |
| try: | |
| qpath = os.path.join(repo, ENGINE_QUERY) | |
| if not os.path.exists(qpath): | |
| print(f" 找不到 {qpath}") | |
| return 1 | |
| print(f"[2/4] 加载原实现 {ENGINE_QUERY}(不启动服务、不改动仓库)") | |
| # query.py 里有 `from db import dict_label` 这类同目录导入,需要把 engine 目录入 sys.path | |
| sys.path.insert(0, os.path.dirname(qpath)) | |
| q = load_module(qpath, "orig_engine_query") | |
| dbdir = tempfile.mkdtemp(prefix="sqlgap_db_") | |
| conn = make_db(os.path.join(dbdir, "probe.db")) | |
| print(" 已建临时库,含 2 张表:demo、hidden_audit_log") | |
| print("[3/4] 对照组:写操作应被拦") | |
| try: | |
| q.run_readonly_sql(conn, WRITE_PROBE) | |
| print(" ❌ 写操作竟然被放行") | |
| write_blocked = False | |
| except ValueError as e: | |
| print(f" ✅ 写操作被拦:{e}") | |
| write_blocked = True | |
| print("[4/4] 关键探针:读取任意表") | |
| try: | |
| cols, rows = q.run_readonly_sql(conn, PROBE) | |
| print(f" ⚠️ 被【放行】。返回 {len(rows)} 张表:") | |
| for r_ in rows: | |
| print(f" - {dict(r_)}") | |
| leaked = True | |
| except ValueError as e: | |
| print(f" ✅ 被拦:{e}") | |
| leaked = False | |
| print() | |
| print("=" * 62) | |
| if leaked and write_blocked: | |
| print("发现成立:该实现拦得住写,拦不住【任意表读取】——") | |
| print("只读 SQL 接口缺少表名白名单,模型可据此枚举整库结构。") | |
| print("(修复建议:白名单由本体模型推出,并对 from/join/逗号连表统一校验)") | |
| code = 0 | |
| elif not leaked: | |
| print("无法复现:该实现已经拦住了任意表读取(可能已被上游修复)。") | |
| print("若如此,本条发现应标记为『已失效』。") | |
| code = 1 | |
| else: | |
| print("结果异常:写操作未被拦住,与本发现的描述不符。") | |
| code = 1 | |
| print("=" * 62) | |
| conn.close() | |
| shutil.rmtree(dbdir, ignore_errors=True) | |
| return code | |
| finally: | |
| if tmp: | |
| shutil.rmtree(tmp, ignore_errors=True) | |
| if __name__ == "__main__": | |
| sys.exit(main()) | |