import asyncio
from aiohttp import web
from aiohttp_security import (
authorized_userid,
forget,
login_required,
remember,
)
from .db_auth import check_credentials
class Web(object):
index_template = """
<!doctype html>
<head>
</head>
<body>
<p>{message}</p>
<form action="/login" method="post">
Login:
<input type="text" name="login">
Password:
<input type="password" name="password">
<input type="submit" value="Login">
</form>
<a href="/logout">Logout</a>
</body>
"""
@asyncio.coroutine
def index(self, request):
username = yield from authorized_userid(request)
if username:
template = self.index_template.format(
message='Hello, {username}!'.format(username=username))
else:
template = self.index_template.format(message='You need to login')
response = web.Response(body=template.encode())
return response
@asyncio.coroutine
def login(self, request):
response = web.HTTPFound('/')
form = yield from request.post()
login = form.get('login')
password = form.get('password')
db_engine = request.app.db_engine
if (yield from check_credentials(db_engine, login, password)):
yield from remember(request, response, login)
return response
return web.HTTPUnauthorized(
body=b'Invalid username/password combination')
@login_required('public')
@asyncio.coroutine
def logout(self, request):
response = web.Response(body=b'You have been logged out')
yield from forget(request, response)
return response
@login_required('public')
@asyncio.coroutine
def internal_page(self, request):
response = web.Response(
body=b'This page is visible for all registered users')
return response
@login_required('protected')
@asyncio.coroutine
def protected_page(self, request):
response = web.Response(body=b'You are on protected page')
return response
def configure(self, app):
router = app.router
router.add_route('GET', '/', self.index, name='index')
router.add_route('POST', '/login', self.login, name='login')
router.add_route('GET', '/logout', self.logout, name='logout')
router.add_route('GET', '/public', self.internal_page, name='public')
router.add_route('GET', '/protected', self.protected_page,
name='protected')