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"""Authentication and ACL configuration."""
from typing import Optional
from fastapi import Request
from pydantic import BaseModel, ValidationError
from .config import env
class ConceptAuthorizationException(Exception):
"""Authorization exceptions thrown by the concept database."""
pass
class DatasetUserAccess(BaseModel):
"""User access for datasets."""
# Whether the user can compute a signal.
compute_signals: bool
# Whether the user can delete a dataset.
delete_dataset: bool
# Whether the user can delete a signal.
delete_signals: bool
# Whether the user can update settings.
update_settings: bool
class ConceptUserAccess(BaseModel):
"""User access for concepts."""
# Whether the user can delete any concept (not their own).
delete_any_concept: bool
class UserAccess(BaseModel):
"""User access."""
create_dataset: bool
# TODO(nsthorat): Make this keyed to each dataset and concept.
dataset: DatasetUserAccess
concept: ConceptUserAccess
class UserInfo(BaseModel):
"""User information."""
id: str
email: str
name: str
given_name: str
family_name: str
class AuthenticationInfo(BaseModel):
"""Authentication information for the user."""
user: Optional[UserInfo] = None
access: UserAccess
auth_enabled: bool
def get_session_user(request: Request) -> Optional[UserInfo]:
"""Get the user from the session."""
if not env('LILAC_AUTH_ENABLED'):
return None
user_info_dict = request.session.get('user', None)
if user_info_dict:
try:
return UserInfo.parse_obj(user_info_dict)
except ValidationError:
return None
return None
def get_user_access() -> UserAccess:
"""Get the user access."""
auth_enabled = env('LILAC_AUTH_ENABLED')
if isinstance(auth_enabled, str):
auth_enabled = auth_enabled.lower() == 'true'
if auth_enabled:
return UserAccess(
create_dataset=False,
dataset=DatasetUserAccess(
compute_signals=False, delete_dataset=False, delete_signals=False, update_settings=False),
concept=ConceptUserAccess(delete_any_concept=False))
return UserAccess(
create_dataset=True,
dataset=DatasetUserAccess(
compute_signals=True, delete_dataset=True, delete_signals=True, update_settings=True),
concept=ConceptUserAccess(delete_any_concept=True))
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