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https://github.com/PiBrewing/craftbeerpi4.git
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97 lines
2.5 KiB
Python
97 lines
2.5 KiB
Python
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from .abstract_auth import AbstractAuthentication
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"""Key used to store the auth policy in the request object"""
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POLICY_KEY = 'aiohttp_auth.policy'
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"""Key used to cache the auth credentials in the request object"""
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AUTH_KEY = 'aiohttp_auth.auth'
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def auth_middleware(policy):
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"""Returns a aiohttp_auth middleware factory for use by the aiohttp
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application object.
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Args:
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policy: A authentication policy with a base class of
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AbstractAuthentication.
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"""
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assert isinstance(policy, AbstractAuthentication)
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async def _auth_middleware_factory(app, handler):
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async def _middleware_handler(request):
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# Save the policy in the request
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request[POLICY_KEY] = policy
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# Call the next handler in the chain
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response = await handler(request)
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# Give the policy a chance to handle the response
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await policy.process_response(request, response)
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return response
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return _middleware_handler
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return _auth_middleware_factory
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async def get_auth(request):
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"""Returns the user_id associated with a particular request.
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Args:
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request: aiohttp Request object.
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Returns:
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The user_id associated with the request, or None if no user is
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associated with the request.
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Raises:
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RuntimeError: Middleware is not installed
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"""
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auth_val = request.get(AUTH_KEY)
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if auth_val:
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return auth_val
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auth_policy = request.get(POLICY_KEY)
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if auth_policy is None:
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raise RuntimeError('auth_middleware not installed')
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request[AUTH_KEY] = await auth_policy.get(request)
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return request[AUTH_KEY]
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async def remember(request, user_id):
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"""Called to store and remember the userid for a request
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Args:
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request: aiohttp Request object.
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user_id: String representing the user_id to remember
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Raises:
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RuntimeError: Middleware is not installed
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"""
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auth_policy = request.get(POLICY_KEY)
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if auth_policy is None:
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raise RuntimeError('auth_middleware not installed')
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return await auth_policy.remember(request, user_id)
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async def forget(request):
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"""Called to forget the userid for a request
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Args:
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request: aiohttp Request object
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Raises:
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RuntimeError: Middleware is not installed
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"""
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auth_policy = request.get(POLICY_KEY)
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if auth_policy is None:
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raise RuntimeError('auth_middleware not installed')
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return await auth_policy.forget(request)
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