76 lines
2.4 KiB
Python
76 lines
2.4 KiB
Python
"""Permissions for Home Assistant."""
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import logging
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from typing import Any, Callable, Optional
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import voluptuous as vol
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from .const import CAT_ENTITIES
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from .entities import ENTITY_POLICY_SCHEMA, compile_entities
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from .merge import merge_policies # noqa: F401
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from .models import PermissionLookup
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from .types import PolicyType
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from .util import test_all
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POLICY_SCHEMA = vol.Schema({vol.Optional(CAT_ENTITIES): ENTITY_POLICY_SCHEMA})
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_LOGGER = logging.getLogger(__name__)
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class AbstractPermissions:
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"""Default permissions class."""
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_cached_entity_func: Optional[Callable[[str, str], bool]] = None
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def _entity_func(self) -> Callable[[str, str], bool]:
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"""Return a function that can test entity access."""
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raise NotImplementedError
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def access_all_entities(self, key: str) -> bool:
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"""Check if we have a certain access to all entities."""
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raise NotImplementedError
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def check_entity(self, entity_id: str, key: str) -> bool:
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"""Check if we can access entity."""
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entity_func = self._cached_entity_func
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if entity_func is None:
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entity_func = self._cached_entity_func = self._entity_func()
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return entity_func(entity_id, key)
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class PolicyPermissions(AbstractPermissions):
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"""Handle permissions."""
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def __init__(self, policy: PolicyType, perm_lookup: PermissionLookup) -> None:
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"""Initialize the permission class."""
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self._policy = policy
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self._perm_lookup = perm_lookup
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def access_all_entities(self, key: str) -> bool:
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"""Check if we have a certain access to all entities."""
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return test_all(self._policy.get(CAT_ENTITIES), key)
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def _entity_func(self) -> Callable[[str, str], bool]:
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"""Return a function that can test entity access."""
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return compile_entities(self._policy.get(CAT_ENTITIES), self._perm_lookup)
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def __eq__(self, other: Any) -> bool:
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"""Equals check."""
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return isinstance(other, PolicyPermissions) and other._policy == self._policy
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class _OwnerPermissions(AbstractPermissions):
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"""Owner permissions."""
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def access_all_entities(self, key: str) -> bool:
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"""Check if we have a certain access to all entities."""
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return True
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def _entity_func(self) -> Callable[[str, str], bool]:
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"""Return a function that can test entity access."""
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return lambda entity_id, key: True
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OwnerPermissions = _OwnerPermissions()
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