115 lines
3.7 KiB
Python
115 lines
3.7 KiB
Python
import json
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import logging
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import os
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import sys
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from pathlib import Path
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from typing import Callable, Optional, TypeVar
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T = TypeVar("T")
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logger = logging.getLogger(__name__)
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PROTECTED_KEYS = [
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"APPNAME",
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"LOG_LEVEL",
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"PATH_EXCLUSION_CONST",
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"MIN_FILES_FOR_PATH",
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"VT_THREAT_TOLERANCE",
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"POLICY_MAP_ENF_AUD"
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]
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_protected_config = {}
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def get_system_config_path() -> Path:
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# Check inside bundled EXE directory first
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bundled_dir = Path(getattr(sys, '_MEIPASS', ''))
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bundled_path = bundled_dir / "system_config.json"
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if bundled_path.exists():
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return bundled_path
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# Fallback to external location
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return Path(__file__).parent.parent / "system_config.json"
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def load_protected_config() -> dict:
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global _protected_config
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try:
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with open(get_system_config_path(), "r") as f:
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system_config = json.load(f)
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except FileNotFoundError:
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logging.warning("⚠️ system_config.json not found. Using built-in defaults.")
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system_config = {
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"APPNAME": "AirlockTools",
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"PATH_EXCLUSION_CONST": 4,
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"MIN_FILES_FOR_PATH": 4,
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"VT_THREAT_TOLERANCE": 4,
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"POLICY_MAP_ENF_AUD": {
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"enforced_id": "audit_id"
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}
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}
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_protected_config = {key: system_config[key] for key in PROTECTED_KEYS}
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return _protected_config
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def get_protected_value(key: str, cast_type: Callable[[str], T] = str, default: Optional[T] = None) -> Optional[T]:
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value = _protected_config.get(key)
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if value is None:
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logging.warning(f"Protected config key '{key}' not found.")
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return default
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try:
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if isinstance(value, str):
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value = value.strip("'\"")
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return cast_type(value)
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except (ValueError, TypeError):
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logging.warning(f"Invalid value for protected key '{key}': {value}. Expected type {cast_type.__name__}.")
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return default
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def get_protected_json(key: str, default: str = "{}") -> dict:
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raw = _protected_config.get(key, default)
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if isinstance(raw, dict):
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return raw
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try:
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return json.loads(raw)
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except json.JSONDecodeError:
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try:
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escaped = raw.encode('unicode_escape').decode('utf-8')
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return json.loads(escaped)
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except Exception as e:
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logging.error(f"Failed to parse protected JSON key '{key}': {e}")
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return json.loads(default)
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def load_env_json(key: str, default: str):
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raw = os.getenv(key, default)
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try:
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return json.loads(raw)
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except json.JSONDecodeError:
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try:
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escaped = raw.encode('unicode_escape').decode('utf-8')
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return json.loads(escaped)
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except Exception as e:
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logging.error(f"Failed to parse {key}: {e}")
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return json.loads(default)
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def load_env(key: str, cast_type: Callable[[str], T] = str, default: Optional[T] = None) -> Optional[T]:
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"""
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Safely retrieves an environment variable and casts it to the desired type.
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Parameters:
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key (str): The name of the environment variable.
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cast_type (Callable[[str], T], optional): Function to cast the value. Defaults to str.
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default (Optional[T], optional): Default value if the variable is not set or invalid.
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Returns:
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Optional[T]: The casted value or the default.
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"""
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value = os.getenv(key)
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if value is None:
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logger.warning(f"Environment variable '{key}' not set.")
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return default
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try:
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value = value.strip("'\"") # Strip surrounding quotes
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return cast_type(value)
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except (ValueError, TypeError):
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logger.warning(f"Invalid value for env var '{key}': {value}. Expected type {cast_type.__name__}.")
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return default |