mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-12-29 17:01:44 +01:00
64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
|
import binascii
|
||
|
|
import json
|
||
|
|
|
||
|
|
import nacl.secret
|
||
|
|
import nacl.utils
|
||
|
|
import nacl.exceptions
|
||
|
|
from nacl.encoding import Base64Encoder
|
||
|
|
|
||
|
|
from . import AbstractStorage, Session
|
||
|
|
from .log import log
|
||
|
|
|
||
|
|
|
||
|
|
class NaClCookieStorage(AbstractStorage):
|
||
|
|
"""NaCl Encrypted JSON storage.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, secret_key, *, cookie_name="AIOHTTP_SESSION",
|
||
|
|
domain=None, max_age=None, path='/',
|
||
|
|
secure=None, httponly=True,
|
||
|
|
encoder=json.dumps, decoder=json.loads):
|
||
|
|
super().__init__(cookie_name=cookie_name, domain=domain,
|
||
|
|
max_age=max_age, path=path, secure=secure,
|
||
|
|
httponly=httponly,
|
||
|
|
encoder=encoder, decoder=decoder)
|
||
|
|
|
||
|
|
self._secretbox = nacl.secret.SecretBox(secret_key)
|
||
|
|
|
||
|
|
def empty_session(self):
|
||
|
|
return Session(None, data=None, new=True, max_age=self.max_age)
|
||
|
|
|
||
|
|
async def load_session(self, request):
|
||
|
|
cookie = self.load_cookie(request)
|
||
|
|
if cookie is None:
|
||
|
|
return self.empty_session()
|
||
|
|
else:
|
||
|
|
try:
|
||
|
|
data = self._decoder(
|
||
|
|
self._secretbox.decrypt(
|
||
|
|
cookie.encode('utf-8'),
|
||
|
|
encoder=Base64Encoder).decode('utf-8')
|
||
|
|
)
|
||
|
|
return Session(None, data=data, new=False,
|
||
|
|
max_age=self.max_age)
|
||
|
|
except (binascii.Error, nacl.exceptions.CryptoError):
|
||
|
|
log.warning("Cannot decrypt cookie value, "
|
||
|
|
"create a new fresh session")
|
||
|
|
return self.empty_session()
|
||
|
|
|
||
|
|
async def save_session(self, request, response, session):
|
||
|
|
if session.empty:
|
||
|
|
return self.save_cookie(response, session._mapping,
|
||
|
|
max_age=session.max_age)
|
||
|
|
|
||
|
|
cookie_data = self._encoder(
|
||
|
|
self._get_session_data(session)
|
||
|
|
).encode('utf-8')
|
||
|
|
nonce = nacl.utils.random(nacl.secret.SecretBox.NONCE_SIZE)
|
||
|
|
self.save_cookie(
|
||
|
|
response,
|
||
|
|
self._secretbox.encrypt(cookie_data, nonce,
|
||
|
|
encoder=Base64Encoder).decode('utf-8'),
|
||
|
|
max_age=session.max_age
|
||
|
|
)
|