ahserver_g/ahserver/auth_api.py

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from aiohttp_auth import auth
from os import urandom
from aiohttp import web
import aiohttp_session
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import base64
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from aiohttp_session import get_session, session_middleware
from aiohttp_session.cookie_storage import EncryptedCookieStorage
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from appPublic.jsonConfig import getConfig
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from appPublic.rsawrap import RSA
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from appPublic.app_logger import AppLogger
class AuthAPI(AppLogger):
def __init__(self):
super().__init__()
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self.conf = getConfig()
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def getPrivateKey(self):
if not hasattr(self,'rsaEngine'):
self.rsaEngine = RSA()
fname = self.conf.website.rsakey.privatekey
self.privatekey = self.rsaEngine.read_privatekey(fname)
return self.privatekey
def rsaDecode(self,cdata):
self.getPrivateKey()
return self.rsaEngine.decode(self.privatekey,cdata)
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def setupAuth(self,app):
# setup session middleware in aiohttp fashion
storage = EncryptedCookieStorage(urandom(32))
aiohttp_session.setup(app, storage)
# Create an auth ticket mechanism that expires after 1 minute (60
# seconds), and has a randomly generated secret. Also includes the
# optional inclusion of the users IP address in the hash
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session_max_time = 120
session_reissue_time = 30
if self.conf.website.session_max_time:
session_max_time = self.conf.website.session_max_time
if self.conf.website.session_reissue_time:
session_reissue_time = self.conf.website.session_reissue_time
policy = auth.SessionTktAuthentication(urandom(32), session_max_time,
reissue_time=30,
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include_ip=True)
# setup aiohttp_auth.auth middleware in aiohttp fashion
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# print('policy = ', policy)
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auth.setup(app, policy)
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print('add auth middleware ....................')
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app.middlewares.append(self.checkAuth)
@web.middleware
async def checkAuth(self,request,handler):
path = request.path
user = await auth.get_auth(request)
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is_ok = await self.checkUserPermission(user, path)
if is_ok:
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return await handler(request)
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if user is None:
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print(f'**{user=}, {path} need login**')
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raise web.HTTPUnauthorized
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print(f'**{user=}, {path} forbidden**')
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raise web.HTTPForbidden()
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async def checkUserPermission(self, user, path):
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raise Exception('checkUserPermission()')
return False
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async def needAuth(self,path):
return False