forked from asvetlov/aiohttp-csrf
/
middleware.py
132 lines (105 loc) · 3.62 KB
/
middleware.py
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import aiohttp_csrf
from aiohttp import web
FORM_FIELD_NAME = '_csrf_token'
COOKIE_NAME = 'csrf_token'
def make_app():
csrf_policy = aiohttp_csrf.policy.FormPolicy(FORM_FIELD_NAME)
csrf_storage = aiohttp_csrf.storage.CookieStorage(COOKIE_NAME)
app = web.Application()
aiohttp_csrf.setup(app, policy=csrf_policy, storage=csrf_storage)
app.middlewares.append(aiohttp_csrf.csrf_middleware)
async def handler_get_form_with_post_token(request):
token = await aiohttp_csrf.generate_token(request)
body = '''
<html>
<head><title>Form with csrf protection</title></head>
<body>
<form method="POST" action="/post_with_check">
<input type="hidden" name="{field_name}" value="{token}" />
<input type="text" name="name" />
<input type="submit" value="Say hello">
</form>
</body>
</html>
''' # noqa
body = body.format(field_name=FORM_FIELD_NAME, token=token)
return web.Response(
body=body.encode('utf-8'),
content_type='text/html',
)
async def handler_get_form_with_get_token(request):
token = await aiohttp_csrf.generate_token(request)
body = '''
<html>
<head><title>Form with csrf protection</title></head>
<body>
<form method="POST" action="/post_with_check/{token}">
<input type="text" name="name" />
<input type="submit" value="Say hello">
</form>
</body>
</html>
''' # noqa
body = body.format(field_name=FORM_FIELD_NAME, token=token)
return web.Response(
body=body.encode('utf-8'),
content_type='text/html',
)
async def handler_post_check(request):
post = await request.post()
body = 'Hello, {name}'.format(name=post['name'])
return web.Response(
body=body.encode('utf-8'),
content_type='text/html',
)
async def handler_get_form_without_token(request):
body = '''
<html>
<head><title>Form without csrf protection</title></head>
<body>
<form method="POST" action="/post_without_check">
<input type="text" name="name" />
<input type="submit" value="Say hello">
</form>
</body>
</html>
'''
return web.Response(
body=body.encode('utf-8'),
content_type='text/html',
)
@aiohttp_csrf.csrf_exempt
async def handler_post_not_check(request):
post = await request.post()
body = 'Hello, {name}'.format(name=post['name'])
return web.Response(
body=body.encode('utf-8'),
content_type='text/html',
)
app.router.add_route(
'GET',
'/form_with_post_check',
handler_get_form_with_post_token,
)
app.router.add_route(
'GET',
'/form_with_get_check',
handler_get_form_with_get_token,
)
app.router.add_route(
'POST',
'/post_with_check/{'+FORM_FIELD_NAME+'}',
handler_post_check,
)
app.router.add_route(
'GET',
'/form_without_check',
handler_get_form_without_token,
)
app.router.add_route(
'POST',
'/post_without_check',
handler_post_not_check,
)
return app
web.run_app(make_app())