craftbeerpi4-pione/venv3/lib/python3.7/site-packages/aiohttp_auth/auth/auth.py

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2021-03-03 23:49:41 +01:00
from .abstract_auth import AbstractAuthentication
"""Key used to store the auth policy in the request object"""
POLICY_KEY = 'aiohttp_auth.policy'
"""Key used to cache the auth credentials in the request object"""
AUTH_KEY = 'aiohttp_auth.auth'
def auth_middleware(policy):
"""Returns a aiohttp_auth middleware factory for use by the aiohttp
application object.
Args:
policy: A authentication policy with a base class of
AbstractAuthentication.
"""
assert isinstance(policy, AbstractAuthentication)
async def _auth_middleware_factory(app, handler):
async def _middleware_handler(request):
# Save the policy in the request
request[POLICY_KEY] = policy
# Call the next handler in the chain
response = await handler(request)
# Give the policy a chance to handle the response
await policy.process_response(request, response)
return response
return _middleware_handler
return _auth_middleware_factory
async def get_auth(request):
"""Returns the user_id associated with a particular request.
Args:
request: aiohttp Request object.
Returns:
The user_id associated with the request, or None if no user is
associated with the request.
Raises:
RuntimeError: Middleware is not installed
"""
auth_val = request.get(AUTH_KEY)
if auth_val:
return auth_val
auth_policy = request.get(POLICY_KEY)
if auth_policy is None:
raise RuntimeError('auth_middleware not installed')
request[AUTH_KEY] = await auth_policy.get(request)
return request[AUTH_KEY]
async def remember(request, user_id):
"""Called to store and remember the userid for a request
Args:
request: aiohttp Request object.
user_id: String representing the user_id to remember
Raises:
RuntimeError: Middleware is not installed
"""
auth_policy = request.get(POLICY_KEY)
if auth_policy is None:
raise RuntimeError('auth_middleware not installed')
return await auth_policy.remember(request, user_id)
async def forget(request):
"""Called to forget the userid for a request
Args:
request: aiohttp Request object
Raises:
RuntimeError: Middleware is not installed
"""
auth_policy = request.get(POLICY_KEY)
if auth_policy is None:
raise RuntimeError('auth_middleware not installed')
return await auth_policy.forget(request)