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import asyncio
import json
import time
import uuid
from typing import Any, Callable, Dict, MutableMapping, Optional, cast
import aiomcache
from aiohttp import web
from aiohttp.test_utils import TestClient
from aiohttp.typedefs import Handler
from aiohttp_session import Session, get_session, session_middleware
from aiohttp_session.memcached_storage import MemcachedStorage
from .typedefs import AiohttpClient
def create_app(
handler: Handler,
memcached: aiomcache.Client,
max_age: Optional[int] = None,
key_factory: Callable[[], str] = lambda: uuid.uuid4().hex,
) -> web.Application:
middleware = session_middleware(
MemcachedStorage(memcached, max_age=max_age, key_factory=key_factory)
)
app = web.Application(middlewares=[middleware])
app.router.add_route("GET", "/", handler)
return app
async def make_cookie(
client: TestClient, memcached: aiomcache.Client, data: Dict[str, Any]
) -> None:
session_data = {"session": data, "created": int(time.time())}
value = json.dumps(session_data)
key = uuid.uuid4().hex
storage_key = ("AIOHTTP_SESSION_" + key).encode("utf-8")
await memcached.set(storage_key, bytes(value, "utf-8"))
client.session.cookie_jar.update_cookies({"AIOHTTP_SESSION": key})
async def make_cookie_with_bad_value(
client: TestClient, memcached: aiomcache.Client
) -> None:
key = uuid.uuid4().hex
storage_key = ("AIOHTTP_SESSION_" + key).encode("utf-8")
await memcached.set(storage_key, b"")
client.session.cookie_jar.update_cookies({"AIOHTTP_SESSION": key})
async def load_cookie(
client: TestClient, memcached: aiomcache.Client
) -> Dict[str, Any]:
cookies = client.session.cookie_jar.filter_cookies(client.make_url("/"))
key = cookies["AIOHTTP_SESSION"]
storage_key = ("AIOHTTP_SESSION_" + key.value).encode("utf-8")
encoded = await memcached.get(storage_key)
assert encoded is not None
s = encoded.decode("utf-8")
return cast(Dict[str, Any], json.loads(s))
async def test_create_new_session(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
assert isinstance(session, Session)
assert session.new
assert not session._changed
assert cast(MutableMapping[str, Any], {}) == session
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached))
resp = await client.get("/")
assert resp.status == 200
async def test_load_existing_session(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
assert isinstance(session, Session)
assert not session.new
assert not session._changed
assert cast(MutableMapping[str, Any], {"a": 1, "b": 12}) == session
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached))
await make_cookie(client, memcached, {"a": 1, "b": 12})
resp = await client.get("/")
assert resp.status == 200
async def test_load_bad_session(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
assert isinstance(session, Session)
assert not session.new
assert not session._changed
assert cast(MutableMapping[str, Any], {}) == session
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached))
await make_cookie_with_bad_value(client, memcached)
resp = await client.get("/")
assert resp.status == 200
async def test_change_session(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session["c"] = 3
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached))
await make_cookie(client, memcached, {"a": 1, "b": 2})
resp = await client.get("/")
assert resp.status == 200
value = await load_cookie(client, memcached)
assert "session" in value
assert "a" in value["session"]
assert "b" in value["session"]
assert "c" in value["session"]
assert "created" in value
assert value["session"]["a"] == 1
assert value["session"]["b"] == 2
assert value["session"]["c"] == 3
morsel = resp.cookies["AIOHTTP_SESSION"]
assert morsel["httponly"]
assert "/" == morsel["path"]
async def test_clear_cookie_on_session_invalidation(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session.invalidate()
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached))
await make_cookie(client, memcached, {"a": 1, "b": 2})
resp = await client.get("/")
assert resp.status == 200
value = await load_cookie(client, memcached)
assert {} == value
morsel = resp.cookies["AIOHTTP_SESSION"]
assert morsel["path"] == "/"
assert morsel["expires"] == "Thu, 01 Jan 1970 00:00:00 GMT"
assert morsel["max-age"] == "0"
async def test_create_cookie_in_handler(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session["a"] = 1
session["b"] = 2
return web.Response(body=b"OK", headers={"HOST": "example.com"})
client = await aiohttp_client(create_app(handler, memcached))
resp = await client.get("/")
assert resp.status == 200
value = await load_cookie(client, memcached)
assert "session" in value
assert "a" in value["session"]
assert "b" in value["session"]
assert "created" in value
assert value["session"]["a"] == 1
assert value["session"]["b"] == 2
morsel = resp.cookies["AIOHTTP_SESSION"]
assert morsel["httponly"]
assert morsel["path"] == "/"
storage_key = ("AIOHTTP_SESSION_" + morsel.value).encode("utf-8")
exists = await memcached.get(storage_key)
assert exists
async def test_create_new_session_if_key_doesnt_exists_in_memcached(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
assert session.new
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached))
client.session.cookie_jar.update_cookies({"AIOHTTP_SESSION": "invalid_key"})
resp = await client.get("/")
assert resp.status == 200
async def test_create_storage_with_custom_key_factory(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session["key"] = "value"
assert session.new
return web.Response(body=b"OK")
def key_factory() -> str:
return "test-key"
client = await aiohttp_client(create_app(handler, memcached, 8, key_factory))
resp = await client.get("/")
assert resp.status == 200
assert resp.cookies["AIOHTTP_SESSION"].value == "test-key"
value = await load_cookie(client, memcached)
assert "key" in value["session"]
assert value["session"]["key"] == "value"
async def test_memcached_session_fixation(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def login(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session["k"] = "v"
return web.Response()
async def logout(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session.invalidate()
return web.Response()
app = create_app(login, memcached)
app.router.add_route("DELETE", "/", logout)
client = await aiohttp_client(app)
resp = await client.get("/")
assert "AIOHTTP_SESSION" in resp.cookies
evil_cookie = resp.cookies["AIOHTTP_SESSION"].value
resp = await client.delete("/")
assert resp.cookies["AIOHTTP_SESSION"].value == ""
client.session.cookie_jar.update_cookies({"AIOHTTP_SESSION": evil_cookie})
resp = await client.get("/")
assert resp.cookies["AIOHTTP_SESSION"].value != evil_cookie
async def test_load_session_dont_load_expired_session(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
exp_param = request.rel_url.query.get("exp", None)
if exp_param is None:
session["a"] = 1
session["b"] = 2
else:
assert cast(MutableMapping[str, Any], {}) == session
return web.Response(body=b"OK")
client = await aiohttp_client(create_app(handler, memcached, 2))
resp = await client.get("/")
assert resp.status == 200
await asyncio.sleep(5)
resp = await client.get("/?exp=yes")
assert resp.status == 200
async def test_memcached_max_age_over_30_days(
aiohttp_client: AiohttpClient, memcached: aiomcache.Client
) -> None:
async def handler(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
session["stored"] = "TEST_VALUE"
session.max_age = 30 * 24 * 60 * 60 + 1
assert session.new
return web.Response(body=b"OK")
async def get_value(request: web.Request) -> web.StreamResponse:
session = await get_session(request)
assert not session.new
response = session["stored"]
return web.Response(body=response.encode("utf-8"))
app = create_app(handler, memcached)
app.router.add_route("GET", "/get_value", get_value)
client = await aiohttp_client(app)
resp = await client.get("/")
assert resp.status == 200
assert "AIOHTTP_SESSION" in resp.cookies
storage_key = ("AIOHTTP_SESSION_" + resp.cookies["AIOHTTP_SESSION"].value).encode(
"utf-8"
)
storage_value = await memcached.get(storage_key)
assert storage_value is not None
storage_dict = json.loads(storage_value.decode("utf-8"))
assert storage_dict["session"]["stored"] == "TEST_VALUE"
resp = await client.get("/get_value")
assert resp.status == 200
resp_content = await resp.text()
assert resp_content == "TEST_VALUE"
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