155 lines
5.4 KiB
Python
155 lines
5.4 KiB
Python
"""
|
|
Token repository using Redis as backend.
|
|
"""
|
|
from typing import Optional
|
|
from datetime import datetime
|
|
|
|
from selfprivacy_api.repositories.tokens.abstract_tokens_repository import (
|
|
AbstractTokensRepository,
|
|
)
|
|
from selfprivacy_api.utils.redis_pool import RedisPool
|
|
from selfprivacy_api.models.tokens.token import Token
|
|
from selfprivacy_api.models.tokens.recovery_key import RecoveryKey
|
|
from selfprivacy_api.models.tokens.new_device_key import NewDeviceKey
|
|
from selfprivacy_api.repositories.tokens.exceptions import TokenNotFound
|
|
|
|
TOKENS_PREFIX = "token_repo:tokens:"
|
|
NEW_DEVICE_KEY_REDIS_KEY = "token_repo:new_device_key"
|
|
RECOVERY_KEY_REDIS_KEY = "token_repo:recovery_key"
|
|
|
|
|
|
class RedisTokensRepository(AbstractTokensRepository):
|
|
"""
|
|
Token repository using Redis as a backend
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.connection = RedisPool().get_connection()
|
|
|
|
@staticmethod
|
|
def token_key_for_device(device_name: str):
|
|
return TOKENS_PREFIX + str(hash(device_name))
|
|
|
|
def get_tokens(self) -> list[Token]:
|
|
"""Get the tokens"""
|
|
redis = self.connection
|
|
token_keys = redis.keys(TOKENS_PREFIX + "*")
|
|
tokens = []
|
|
for key in token_keys:
|
|
token = self._token_from_hash(key)
|
|
if token is not None:
|
|
tokens.append(token)
|
|
return tokens
|
|
|
|
def delete_token(self, input_token: Token) -> None:
|
|
"""Delete the token"""
|
|
redis = self.connection
|
|
key = RedisTokensRepository._token_redis_key(input_token)
|
|
if input_token not in self.get_tokens():
|
|
raise TokenNotFound
|
|
redis.delete(key)
|
|
|
|
def reset(self):
|
|
for token in self.get_tokens():
|
|
self.delete_token(token)
|
|
self.delete_new_device_key()
|
|
redis = self.connection
|
|
redis.delete(RECOVERY_KEY_REDIS_KEY)
|
|
|
|
def get_recovery_key(self) -> Optional[RecoveryKey]:
|
|
"""Get the recovery key"""
|
|
redis = self.connection
|
|
if redis.exists(RECOVERY_KEY_REDIS_KEY):
|
|
return self._recovery_key_from_hash(RECOVERY_KEY_REDIS_KEY)
|
|
return None
|
|
|
|
def create_recovery_key(
|
|
self,
|
|
expiration: Optional[datetime],
|
|
uses_left: Optional[int],
|
|
) -> RecoveryKey:
|
|
"""Create the recovery key"""
|
|
recovery_key = RecoveryKey.generate(expiration=expiration, uses_left=uses_left)
|
|
self._store_model_as_hash(RECOVERY_KEY_REDIS_KEY, recovery_key)
|
|
return recovery_key
|
|
|
|
def _store_new_device_key(self, new_device_key: NewDeviceKey) -> None:
|
|
"""Store new device key directly"""
|
|
self._store_model_as_hash(NEW_DEVICE_KEY_REDIS_KEY, new_device_key)
|
|
|
|
def delete_new_device_key(self) -> None:
|
|
"""Delete the new device key"""
|
|
redis = self.connection
|
|
redis.delete(NEW_DEVICE_KEY_REDIS_KEY)
|
|
|
|
@staticmethod
|
|
def _token_redis_key(token: Token) -> str:
|
|
return RedisTokensRepository.token_key_for_device(token.device_name)
|
|
|
|
def _store_token(self, new_token: Token):
|
|
"""Store a token directly"""
|
|
key = RedisTokensRepository._token_redis_key(new_token)
|
|
self._store_model_as_hash(key, new_token)
|
|
|
|
def _decrement_recovery_token(self):
|
|
"""Decrement recovery key use count by one"""
|
|
if self.is_recovery_key_valid():
|
|
recovery_key = self.get_recovery_key()
|
|
if recovery_key is None:
|
|
return
|
|
uses_left = recovery_key.uses_left
|
|
if uses_left is not None:
|
|
redis = self.connection
|
|
redis.hset(RECOVERY_KEY_REDIS_KEY, "uses_left", uses_left - 1)
|
|
|
|
def _get_stored_new_device_key(self) -> Optional[NewDeviceKey]:
|
|
"""Retrieves new device key that is already stored."""
|
|
return self._new_device_key_from_hash(NEW_DEVICE_KEY_REDIS_KEY)
|
|
|
|
@staticmethod
|
|
def _is_date_key(key: str):
|
|
return key in [
|
|
"created_at",
|
|
"expires_at",
|
|
]
|
|
|
|
@staticmethod
|
|
def _prepare_model_dict(d: dict):
|
|
date_keys = [key for key in d.keys() if RedisTokensRepository._is_date_key(key)]
|
|
for date in date_keys:
|
|
if d[date] != "None":
|
|
d[date] = datetime.fromisoformat(d[date])
|
|
for key in d.keys():
|
|
if d[key] == "None":
|
|
d[key] = None
|
|
|
|
def _model_dict_from_hash(self, redis_key: str) -> Optional[dict]:
|
|
redis = self.connection
|
|
if redis.exists(redis_key):
|
|
token_dict = redis.hgetall(redis_key)
|
|
RedisTokensRepository._prepare_model_dict(token_dict)
|
|
return token_dict
|
|
return None
|
|
|
|
def _hash_as_model(self, redis_key: str, model_class):
|
|
token_dict = self._model_dict_from_hash(redis_key)
|
|
if token_dict is not None:
|
|
return model_class(**token_dict)
|
|
return None
|
|
|
|
def _token_from_hash(self, redis_key: str) -> Optional[Token]:
|
|
return self._hash_as_model(redis_key, Token)
|
|
|
|
def _recovery_key_from_hash(self, redis_key: str) -> Optional[RecoveryKey]:
|
|
return self._hash_as_model(redis_key, RecoveryKey)
|
|
|
|
def _new_device_key_from_hash(self, redis_key: str) -> Optional[NewDeviceKey]:
|
|
return self._hash_as_model(redis_key, NewDeviceKey)
|
|
|
|
def _store_model_as_hash(self, redis_key, model):
|
|
redis = self.connection
|
|
for key, value in model.dict().items():
|
|
if isinstance(value, datetime):
|
|
value = value.isoformat()
|
|
redis.hset(redis_key, key, str(value))
|