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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""PreToolUse guard:人格鎖驗證 + 跨人格資料隔離(唯一的強制執行點)。
擋下的情形:
* 讀寫非「本 session 當前人格」的人格目錄(含 Read/Write/Edit/Glob/Grep/Bash
* guestpersona-guest sub agent)寫入任何人格檔案,或換讀別的人格
* CLI 帶假的 --session(冒用其他程序身分)
* 目標人格的鎖屬於其他還活著的程序
"""
from __future__ import annotations
import json
import sys
from pathlib import Path
sys.path.insert(0, str(Path(__file__).resolve().parent.parent / "scripts"))
import persona_lib as pl # noqa: E402
def main() -> int:
try:
event = json.load(sys.stdin)
except json.JSONDecodeError:
return 0
try:
decision, reason = pl.guard_decide(event)
except Exception as exc: # guard 自己壞掉不該擋住整個 session
print(f"persona guard 內部錯誤:{exc}", file=sys.stderr)
return 0
if decision != "deny":
return 0
print(json.dumps({
"hookSpecificOutput": {
"hookEventName": "PreToolUse",
"permissionDecision": "deny",
"permissionDecisionReason": f"[jsc-persona 隔離] {reason}",
}
}, ensure_ascii=False))
return 0
if __name__ == "__main__":
raise SystemExit(main())