ahserver_g/ahserver/auth_api.py

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2019-07-10 17:34:45 +08:00
from aiohttp_auth import auth
from os import urandom
from aiohttp import web
import aiohttp_session
from aiohttp_session import get_session, session_middleware
from aiohttp_session.cookie_storage import EncryptedCookieStorage
class AuthAPI:
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
policy = auth.SessionTktAuthentication(urandom(32), 60,
include_ip=True)
# setup aiohttp_auth.auth middleware in aiohttp fashion
auth.setup(app, policy)
app.middlewares.append(self.checkAuth)
app.router.add_route('POST','/login',self.login)
app.router.add_route('GET', '/logout', self.logout)
async def login(self,request):
params = await request.post()
user_id = params.get('user',None)
password = params.get('password',None)
from_path = params.get('from_path',None)
if self.checkUserPassword(user_id,password):
await auth.remember(request, user)
return web.HpptFound(from_path)
raise web.HTTPUnauthorized()
async def logout(self,request):
await auth.forget(request)
return web.REsponse(body='OK'.encode('utf-8'))
@web.middleware
async def checkAuth(self,request,handler):
path = request.path
print(f'*****{path} checkAuth called********')
if not await self.needAuth(path):
return await handler(request)
user = await auth.get_auth(request)
if user is None:
raise web.HTTPFound(f'/login_form?from_path={path}')
user_perms = await self.getUserPermission(user)
need_perm = await self.getPermissionNeed(path)
if need_perm in user_perms:
return await handler(request)
print(f'**{path} forbidden**')
raise web.HTTPForbidden()
async def needAuth(self,path):
if path in ['/','/header.tmpl','footer.tmpl','/login','/login_form','/index.tmpl',]:
return False
return False
async def getPermissionNeed(self,path):
return 'admin'
async def checkUserPassword(self,user_id,password):
return True
async def getUserPermissions(self,user):
return ['admin','view']