83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
from textwrap import dedent
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from typing import NoReturn
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from aiohttp import web
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from aiohttp_security import (
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remember, forget, authorized_userid,
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check_permission, check_authorized,
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)
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from .db_auth import check_credentials
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class Web(object):
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index_template = dedent("""
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<!doctype html>
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<head></head>
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<body>
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<p>{message}</p>
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<form action="/login" method="post">
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Login:
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<input type="text" name="login">
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Password:
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<input type="password" name="password">
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<input type="submit" value="Login">
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</form>
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<a href="/logout">Logout</a>
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</body>
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""")
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async def index(self, request: web.Request) -> web.Response:
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username = await authorized_userid(request)
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if username:
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template = self.index_template.format(
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message='Hello, {username}!'.format(username=username))
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else:
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template = self.index_template.format(message='You need to login')
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response = web.Response(body=template.encode())
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return response
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async def login(self, request: web.Request) -> NoReturn:
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invalid_resp = web.HTTPUnauthorized(body=b'Invalid username/password combination')
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form = await request.post()
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login = form.get('login')
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password = form.get('password')
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db_engine = request.app['db_engine']
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if not (isinstance(login, str) and isinstance(password, str)):
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raise invalid_resp
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if await check_credentials(db_engine, login, password):
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response = web.HTTPFound('/')
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await remember(request, response, login)
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raise response
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raise invalid_resp
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async def logout(self, request: web.Request) -> web.Response:
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await check_authorized(request)
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response = web.Response(body=b'You have been logged out')
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await forget(request, response)
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return response
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async def internal_page(self, request: web.Request) -> web.Response:
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await check_permission(request, 'public')
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response = web.Response(
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body=b'This page is visible for all registered users')
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return response
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async def protected_page(self, request: web.Request) -> web.Response:
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await check_permission(request, 'protected')
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response = web.Response(body=b'You are on protected page')
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return response
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def configure(self, app: web.Application) -> None:
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router = app.router
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router.add_route('GET', '/', self.index, name='index')
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router.add_route('POST', '/login', self.login, name='login')
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router.add_route('GET', '/logout', self.logout, name='logout')
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router.add_route('GET', '/public', self.internal_page, name='public')
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router.add_route('GET', '/protected', self.protected_page,
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name='protected')
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