419 lines
19 KiB
Python
419 lines
19 KiB
Python
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# ============================================================
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# 兜底高风险治理 v1（moduleId: core-fallback-highrisk, 可重生 ✅）
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# GOAL-P3 交付 1/5 + P3-DESIGN §2/§4：
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# P3 白名单（fallback-highrisk.json）加载与裁决、角色判定、白名单文档校验。
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#
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# 语义铁律（与 features.json 相反，两文件两加载器语义隔离，互不 import）：
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# - features.json 是「可用性/可见性」开关，fail-open，不是权限边界；
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# - fallback-highrisk.json 是**权限边界的一部分**（P3 放行唯一依据），
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# **fail-closed**：文件缺失 / JSON 损坏 / 未知场景键 / 未知字段 / 类型错误 /
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# 引用未登记意图 → 整份文件判损坏，默认全拒，error 显式带原因。
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# 白名单里任何无法解释的内容都按攻击面处理（不做「忽略未知键」）。
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# - 每次裁决现读文件（不缓存）：白名单经确认卡落盘后下一次裁决即生效；
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# 返回结构携带 path/sha256，出卡/执行双端比对，审批窗口内变更 → 执行拒绝。
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# ============================================================
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from __future__ import annotations
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import hashlib
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import json
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import os
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from pathlib import Path
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from typing import Any
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WHITELIST_VERSION = 1
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SCENARIOS = ("S4", "S6", "S7")
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_PATH_ENV = "APS_FALLBACK_HIGHRISK_PATH"
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# 场景允许的 power 集（P3-DESIGN §3.3③）：
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# S4 只许 P0/P1 沙盒意图；S6 只许 P1/P2 补录意图；S7 只许白名单内 P2/P3 治理动作。
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_SCENARIO_POWER_SETS: dict[str, tuple[str, ...]] = {
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"S4": ("P0", "P1"),
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"S6": ("P1", "P2"),
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"S7": ("P2", "P3"),
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}
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_TOP_LEVEL_KEYS = {"whitelistVersion", "updatedAt", "updatedBy", "scenarios"}
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_SCENARIO_KEYS = {"enabled", "intents", "roles", "maxItemsPerRun"}
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DEFAULT_S6_MAX_ITEMS = 20
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class HighriskDenied(Exception):
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"""白名单裁决拒绝（fail-closed）。调用方归并为 PlanError / DeviationError / 显式失败。"""
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# ---------------------------------------------------------------------------
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# 路径与文件指纹
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# ---------------------------------------------------------------------------
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def default_whitelist_path() -> Path:
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"""白名单路径：APS_FALLBACK_HIGHRISK_PATH 覆盖，默认 path_under_data（与 features.json 同目录并列）。"""
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configured = (os.environ.get(_PATH_ENV) or "").strip()
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if configured:
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return Path(configured).expanduser().resolve()
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from server.aps_home import path_under_data
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return path_under_data("fallback-highrisk.json")
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def file_sha256(path: str | Path) -> str | None:
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"""文件内容 sha256；文件不存在/不可读 → None（调用方按 fail-closed 处理）。"""
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try:
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return hashlib.sha256(Path(path).read_bytes()).hexdigest()
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except OSError:
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return None
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def canonical_sha256(obj: Any) -> str:
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"""canonical JSON（排序键 + 紧凑分隔符）的 sha256（文档冻结指纹口径）。"""
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blob = json.dumps(obj, ensure_ascii=True, sort_keys=True,
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separators=(",", ":"), default=str)
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return hashlib.sha256(blob.encode("utf-8")).hexdigest()
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# ---------------------------------------------------------------------------
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# 白名单文档校验（出卡前复用：改白名单的新文档必须全过才允许出卡）
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# ---------------------------------------------------------------------------
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def validate_whitelist_doc(doc: Any) -> str | None:
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"""逐条强制 schema（P3-DESIGN §2.1 字段规则表）。合法 → None；非法 → 显式原因。
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任何一条不过都意味着「整份文件判损坏」——调用方不得做局部放行。
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intent 必须在 harness._POWER_MAP 登记（防「先放行后登记」倒置）。
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"""
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from server.agent_core.harness import _POWER_MAP
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if not isinstance(doc, dict):
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return "白名单顶层不是 JSON 对象"
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if doc.get("whitelistVersion") != WHITELIST_VERSION:
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return f"whitelistVersion 必须为 {WHITELIST_VERSION}（实际 {doc.get('whitelistVersion')!r}）"
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unknown_top = sorted(set(doc) - _TOP_LEVEL_KEYS)
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if unknown_top:
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return f"白名单含未知顶层字段: {unknown_top}"
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scenarios = doc.get("scenarios")
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if not isinstance(scenarios, dict):
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return "白名单 scenarios 段不是对象"
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unknown_scenarios = sorted(set(scenarios) - set(SCENARIOS))
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if unknown_scenarios:
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return f"白名单含未知场景键: {unknown_scenarios}（只允许 {'/'.join(SCENARIOS)}）"
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for name, entry in scenarios.items():
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if not isinstance(entry, dict):
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return f"场景 {name} 配置不是对象"
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unknown_fields = sorted(set(entry) - _SCENARIO_KEYS)
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if unknown_fields:
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return f"场景 {name} 含未知字段: {unknown_fields}"
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if not isinstance(entry.get("enabled"), bool):
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return f"场景 {name}.enabled 必须是 bool"
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intents = entry.get("intents")
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if not isinstance(intents, list) or not all(isinstance(i, str) and i for i in intents):
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return f"场景 {name}.intents 必须是非空字符串数组"
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for intent in intents:
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if intent not in _POWER_MAP:
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return f"场景 {name}.intents 引用了未在权力矩阵登记的意图: {intent}"
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roles = entry.get("roles")
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if not isinstance(roles, list) or not roles \
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or not all(isinstance(r, str) and r.strip() for r in roles):
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return f"场景 {name}.roles 必须是非空字符串数组"
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if "maxItemsPerRun" in entry:
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cap = entry["maxItemsPerRun"]
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if not isinstance(cap, int) or isinstance(cap, bool) or cap <= 0:
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return f"场景 {name}.maxItemsPerRun 必须是正整数"
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return None
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# ---------------------------------------------------------------------------
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# fail-closed 加载器（每次现读，不缓存）
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# ---------------------------------------------------------------------------
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def load_highrisk_whitelist(path: str | Path | None = None) -> dict[str, Any]:
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"""读取并裁决白名单（P3-DESIGN §2.1 fail-closed 裁决表的全部出口）。
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返回 {"ok": bool, "error": str | None, "grants": {场景: 归一化配置},
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"path": str, "sha256": str | None, "doc": 原始文档 | None}。
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任何配置问题 → ok=False（全拒）+ error 显式带原因，绝不放行。
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"""
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resolved = Path(path) if path else default_whitelist_path()
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result: dict[str, Any] = {
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"ok": False, "error": None, "grants": {},
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"path": str(resolved), "sha256": None, "doc": None,
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}
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try:
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if not resolved.is_file():
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result["error"] = "白名单文件缺失（fail-closed 默认全拒）"
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return result
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result["sha256"] = file_sha256(resolved)
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try:
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doc = json.loads(resolved.read_text(encoding="utf-8"))
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except (json.JSONDecodeError, UnicodeDecodeError) as exc:
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result["error"] = f"白名单 JSON 解析失败（{type(exc).__name__}），fail-closed 全拒"
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return result
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error = validate_whitelist_doc(doc)
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if error:
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result["error"] = f"白名单判损坏：{error}（fail-closed 全拒）"
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return result
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grants: dict[str, dict[str, Any]] = {}
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for name, entry in (doc.get("scenarios") or {}).items():
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grants[name] = {
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"enabled": bool(entry.get("enabled")),
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"intents": tuple(str(i) for i in entry.get("intents") or ()),
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"roles": tuple(str(r).strip().lower() for r in entry.get("roles") or ()),
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"maxItemsPerRun": entry.get("maxItemsPerRun"),
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}
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result.update({"ok": True, "grants": grants, "doc": doc})
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return result
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except Exception as exc: # noqa: BLE001 - 任何异常（含 IO）→ 全拒（宁可误关同款哲学）
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result["error"] = f"白名单加载异常（{type(exc).__name__}: {exc}），fail-closed 全拒"
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return result
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# ---------------------------------------------------------------------------
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# 裁决（出卡闸 / 执行闸共用的唯一放行路径）
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# ---------------------------------------------------------------------------
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def scenario_grant(whitelist: dict[str, Any], scenario: str) -> dict[str, Any] | None:
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"""取场景放行配置（未启用/白名单不可用 → None）。"""
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if not whitelist.get("ok"):
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return None
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grant = (whitelist.get("grants") or {}).get(scenario)
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if not grant or not grant.get("enabled"):
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return None
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return grant
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def intent_allowed(whitelist: dict[str, Any], scenario: str, intent: str) -> bool:
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grant = scenario_grant(whitelist, scenario)
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return bool(grant) and intent in (grant.get("intents") or ())
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def check_scenario_step(scenario: str, intent: str, power: str,
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whitelist: dict[str, Any]) -> None:
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"""P3 场景步骤的统一裁决（P3-DESIGN §3.3）。任一条件不过 → HighriskDenied。
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① 白名单必须可用（fail-closed）；② 场景必须 enabled；
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③ intent 必须在场景放行集；④ power 不得越场景允许集。
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"""
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if scenario not in SCENARIOS:
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raise HighriskDenied(f"场景 {scenario!r} 非高风险场景（{ '/'.join(SCENARIOS) }）")
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if not whitelist.get("ok"):
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raise HighriskDenied(whitelist.get("error") or "白名单不可用（fail-closed 默认全拒）")
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grant = (whitelist.get("grants") or {}).get(scenario)
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if not grant or not grant.get("enabled"):
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raise HighriskDenied(f"{scenario} 未在白名单启用")
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if intent not in (grant.get("intents") or ()):
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raise HighriskDenied(f"意图 {intent} 未列入 {scenario} 白名单放行集")
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allowed_powers = _SCENARIO_POWER_SETS[scenario]
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if power not in allowed_powers:
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raise HighriskDenied(
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f"意图 {intent} 权力等级 {power} 超出 {scenario} 允许集 {'/'.join(allowed_powers)}")
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def scenario_power_set(scenario: str) -> tuple[str, ...]:
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return _SCENARIO_POWER_SETS.get(scenario, ())
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def s6_max_items(whitelist: dict[str, Any], *, env_cap: int = DEFAULT_S6_MAX_ITEMS) -> int:
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"""S6 单轮出卡上限：白名单 maxItemsPerRun（缺省 20）与 env 全局封顶取小。"""
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grant = scenario_grant(whitelist, "S6") or {}
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configured = grant.get("maxItemsPerRun") or DEFAULT_S6_MAX_ITEMS
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try:
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cap = int(env_cap)
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except (TypeError, ValueError):
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cap = DEFAULT_S6_MAX_ITEMS
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return max(1, min(int(configured), cap))
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# ---------------------------------------------------------------------------
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# 角色判定（复用 server/auth 既有身份体系，不新造权限模型）
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# ---------------------------------------------------------------------------
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def current_identity_roles() -> tuple[str, ...]:
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"""当前身份角色元组（小写归一）。无 HTTP 上下文 → ("system",)（测试/脚本通道）。"""
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from server.auth.context import get_identity
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return tuple(str(r).lower() for r in get_identity().roles)
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def identity_roles_match(whitelist: dict[str, Any], scenario: str,
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roles: tuple[str, ...] | None = None) -> bool:
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"""身份是否在场景可见/可发起角色集内（白名单 scenarios.<S>.roles 是唯一数据源）。
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system 角色放行（harness.py:486 同款测试/脚本通道例外，P3-DESIGN §4.1.4）。
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"""
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grant = scenario_grant(whitelist, scenario)
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if not grant:
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return False
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current = roles if roles is not None else current_identity_roles()
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lowered = {str(r).lower() for r in current}
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if "system" in lowered:
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return True
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return bool(lowered & set(grant.get("roles") or ()))
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def is_ops_identity(whitelist: dict[str, Any],
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roles: tuple[str, ...] | None = None) -> bool:
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"""是否运维入口可见身份（S7.roles ∩ 当前身份）。"""
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return identity_roles_match(whitelist, "S7", roles)
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def roles_for_scenario(whitelist: dict[str, Any], scenario: str) -> tuple[str, ...]:
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grant = scenario_grant(whitelist, scenario)
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return tuple(grant.get("roles") or ()) if grant else ()
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# ---------------------------------------------------------------------------
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# S6 补录清单项校验（出卡前逐项；任一不过 → 显式失败不出卡）
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# ---------------------------------------------------------------------------
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def _find_work_order(world: dict[str, Any], wo_id: Any) -> dict[str, Any] | None:
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for table in ("flexWorkOrders", "workOrders"):
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for wo in world.get(table) or []:
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if isinstance(wo, dict) and wo.get("id") == wo_id:
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return wo
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return None
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def validate_backlog_item(item: Any, world: dict[str, Any]) -> str | None:
|
|||
|
|
"""补录项合法性（P3-DESIGN §6.3 逐项校验）。合法 → None；非法 → 显式原因。
|
|||
|
|
|
|||
|
|
规则：woId 存在；externalWoId 申报时必须与工单 mesExternalId 对得上；
|
|||
|
|
progressPct ∈ [0,100]；finish 布尔；progressPct 与 finish 至少声明其一。
|
|||
|
|
"""
|
|||
|
|
if not isinstance(item, dict):
|
|||
|
|
return "补录项不是对象"
|
|||
|
|
wo_id = item.get("woId")
|
|||
|
|
if not isinstance(wo_id, int) or isinstance(wo_id, bool):
|
|||
|
|
return f"补录项 woId 必须是整数（实际 {wo_id!r}）"
|
|||
|
|
wo = _find_work_order(world or {}, wo_id)
|
|||
|
|
if wo is None:
|
|||
|
|
return f"补录项 woId={wo_id} 在工单表中不存在"
|
|||
|
|
declared_ext = item.get("externalWoId")
|
|||
|
|
if declared_ext is not None and str(declared_ext) != str(wo.get("mesExternalId") or ""):
|
|||
|
|
return (f"补录项 woId={wo_id} 的 externalWoId 与系统下发记录对不上"
|
|||
|
|
f"（申报 {declared_ext!r}，系统 {wo.get('mesExternalId')!r}）")
|
|||
|
|
has_progress = item.get("progressPct") is not None
|
|||
|
|
has_finish = item.get("finish") is not None
|
|||
|
|
if not (has_progress or has_finish):
|
|||
|
|
return f"补录项 woId={wo_id} 必须声明 progressPct 或 finish 之一"
|
|||
|
|
if has_progress:
|
|||
|
|
pct = item.get("progressPct")
|
|||
|
|
if not isinstance(pct, (int, float)) or isinstance(pct, bool) \
|
|||
|
|
or not (0 <= pct <= 100):
|
|||
|
|
return f"补录项 woId={wo_id} 的 progressPct 必须在 [0,100]（实际 {pct!r}）"
|
|||
|
|
if has_finish and not isinstance(item.get("finish"), bool):
|
|||
|
|
return f"补录项 woId={wo_id} 的 finish 必须是 bool"
|
|||
|
|
if "offlineBooking" in item and not isinstance(item.get("offlineBooking"), bool):
|
|||
|
|
return f"补录项 woId={wo_id} 的 offlineBooking 必须是 bool"
|
|||
|
|
return None
|
|||
|
|
|
|||
|
|
|
|||
|
|
# ---------------------------------------------------------------------------
|
|||
|
|
# S7 改配置：受控文档校验与白名单 diff 再生成
|
|||
|
|
# ---------------------------------------------------------------------------
|
|||
|
|
|
|||
|
|
# config.apply 允许替换的文件白名单（fallback-highrisk.json 只走 policy.update 专属通道）
|
|||
|
|
CONFIG_APPLY_FILES = ("features.json",)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def validate_features_config_doc(doc: Any) -> str | None:
|
|||
|
|
"""features.json 新文档的独立结构校验（P3-DESIGN §7.3）。
|
|||
|
|
|
|||
|
|
刻意不 import feature_flags：那是 fail-open 的「可用性开关」加载语义，
|
|||
|
|
这里是 fail-closed 的「整文档替换」出卡校验——版本必须合法、features 段
|
|||
|
|
必须是「键 → bool」对象，否则拒绝出卡/执行。
|
|||
|
|
"""
|
|||
|
|
if not isinstance(doc, dict):
|
|||
|
|
return "配置文档顶层不是 JSON 对象"
|
|||
|
|
if doc.get("version") != 1:
|
|||
|
|
return f"配置文档 version 必须为 1（实际 {doc.get('version')!r}）"
|
|||
|
|
features = doc.get("features")
|
|||
|
|
if not isinstance(features, dict) or not features:
|
|||
|
|
return "配置文档 features 段必须是非空对象"
|
|||
|
|
bad = sorted(k for k, v in features.items() if not isinstance(v, bool))
|
|||
|
|
if bad:
|
|||
|
|
return f"配置文档 features 含非 bool 取值: {bad}"
|
|||
|
|
return None
|
|||
|
|
|
|||
|
|
|
|||
|
|
def validate_config_apply_params(params: Any, *, check_hashes: bool = True) -> str | None:
|
|||
|
|
"""agent.fallback.ops.config.apply 冻结参数校验（出卡闸/出卡组装/执行共用）。
|
|||
|
|
|
|||
|
|
check_hashes=False（出卡闸对 Pi 计划）：只校验文件白名单与文档合法性——
|
|||
|
|
contentSha256/beforeSha256 由编排器在出卡组装时按机器再生成原则填充
|
|||
|
|
（K 轮实测教训：Pi 没有计算 sha256 的工具，要求其申报指纹 = 物理不可用）。
|
|||
|
|
check_hashes=True（组装后/执行端）：指纹必须与内容重算一致。
|
|||
|
|
"""
|
|||
|
|
if not isinstance(params, dict):
|
|||
|
|
return "config.apply 参数必须是对象"
|
|||
|
|
target = str(params.get("file") or "")
|
|||
|
|
if target not in CONFIG_APPLY_FILES:
|
|||
|
|
return f"config.apply 目标文件 {target!r} 不在允许集 {list(CONFIG_APPLY_FILES)}"
|
|||
|
|
content = params.get("content")
|
|||
|
|
err = validate_features_config_doc(content)
|
|||
|
|
if err:
|
|||
|
|
return f"config.apply 新文档非法：{err}"
|
|||
|
|
if not check_hashes:
|
|||
|
|
return None
|
|||
|
|
declared = str(params.get("contentSha256") or "")
|
|||
|
|
if canonical_sha256(content) != declared:
|
|||
|
|
return "config.apply contentSha256 与 content 重算不符（指纹虚报）"
|
|||
|
|
before = params.get("beforeSha256")
|
|||
|
|
if before is not None and not isinstance(before, str):
|
|||
|
|
return "config.apply beforeSha256 必须是字符串或 null"
|
|||
|
|
return None
|
|||
|
|
|
|||
|
|
|
|||
|
|
def apply_policy_diff(current_doc: dict[str, Any] | None,
|
|||
|
|
diff: dict[str, Any]) -> dict[str, Any]:
|
|||
|
|
"""从「当前白名单 + diff 声明」再生成完整新白名单文档（P3-DESIGN §2.4）。
|
|||
|
|
|
|||
|
|
Pi 只产 diff 声明，文档本体由编排器计算（卡片内容机器再生成原则）。
|
|||
|
|
diff = {"scenario", "addIntents"?, "removeIntents"?, "enabled"?,
|
|||
|
|
"roles"?, "maxItemsPerRun"?}。调用方必须再过 validate_whitelist_doc。
|
|||
|
|
Raises HighriskDenied：diff 自身形态非法。
|
|||
|
|
"""
|
|||
|
|
if not isinstance(diff, dict):
|
|||
|
|
raise HighriskDenied("policy diff 必须是对象")
|
|||
|
|
unknown = sorted(set(diff) - {"scenario", "addIntents", "removeIntents",
|
|||
|
|
"enabled", "roles", "maxItemsPerRun"})
|
|||
|
|
if unknown:
|
|||
|
|
raise HighriskDenied(f"policy diff 含未知字段: {unknown}")
|
|||
|
|
scenario = str(diff.get("scenario") or "")
|
|||
|
|
if scenario not in SCENARIOS:
|
|||
|
|
raise HighriskDenied(f"policy diff 场景 {scenario!r} 非法（只允许 {'/'.join(SCENARIOS)}）")
|
|||
|
|
for key in ("addIntents", "removeIntents", "roles"):
|
|||
|
|
if key in diff and diff[key] is not None and not isinstance(diff[key], list):
|
|||
|
|
raise HighriskDenied(f"policy diff.{key} 必须是数组")
|
|||
|
|
|
|||
|
|
base = current_doc if isinstance(current_doc, dict) else {}
|
|||
|
|
scenarios = json.loads(json.dumps(base.get("scenarios") or {}))
|
|||
|
|
entry = scenarios.get(scenario) or {
|
|||
|
|
"enabled": False, "intents": [], "roles": ["admin"],
|
|||
|
|
}
|
|||
|
|
intents = [str(i) for i in entry.get("intents") or []]
|
|||
|
|
for intent in diff.get("addIntents") or []:
|
|||
|
|
if str(intent) not in intents:
|
|||
|
|
intents.append(str(intent))
|
|||
|
|
for intent in diff.get("removeIntents") or []:
|
|||
|
|
intents = [i for i in intents if i != str(intent)]
|
|||
|
|
entry["intents"] = intents
|
|||
|
|
if diff.get("enabled") is not None:
|
|||
|
|
entry["enabled"] = bool(diff["enabled"])
|
|||
|
|
if diff.get("roles") is not None:
|
|||
|
|
entry["roles"] = [str(r) for r in diff["roles"]]
|
|||
|
|
if diff.get("maxItemsPerRun") is not None:
|
|||
|
|
entry["maxItemsPerRun"] = diff["maxItemsPerRun"]
|
|||
|
|
scenarios[scenario] = entry
|
|||
|
|
|
|||
|
|
return {
|
|||
|
|
"whitelistVersion": WHITELIST_VERSION,
|
|||
|
|
"updatedAt": base.get("updatedAt"),
|
|||
|
|
"updatedBy": base.get("updatedBy"),
|
|||
|
|
"scenarios": scenarios,
|
|||
|
|
}
|