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fix encryption tag in preferences token

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This commit is contained in:
Joao Ramos 2022-09-21 13:54:02 +02:00
parent 0d31b1aeeb
commit 8f39087ffb
1 changed files with 15 additions and 6 deletions
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21
app/models/config.py
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@ -51,7 +51,8 @@ class Config:
'block',
'safe',
'nojs',
'anon_view'
'anon_view',
'preferences_encrypted'
]
# Skip setting custom config if there isn't one
@ -87,6 +88,13 @@ class Config:
@property
def preferences(self) -> str:
# if encryption key is not set will uncheck preferences encryption
if self.preferences_encrypted:
self.preferences_encrypted = bool(self.preferences_key)
# add a tag for visibility if preferences token startswith 'e' it means
# the token is encrypted, 'u' means the token is unencrypted and can be
# used by other whoogle instances
encrypted_flag = "e" if self.preferences_encrypted else 'u'
preferences_digest = self._encode_preferences()
return f"{encrypted_flag}{preferences_digest}"
@ -175,13 +183,14 @@ class Config:
if self.preferences_key != '':
key = self._get_fernet_key(self.preferences_key)
encoded_preferences = Fernet(key).encrypt(encoded_preferences)
encoded_preferences = brotli.compress(encoded_preferences)
return urlsafe_b64encode(
brotli.compress(encoded_preferences)
).decode()
return urlsafe_b64encode(encoded_preferences).decode()
def _decode_preferences(self, preferences: str) -> dict:
if preferences.startswith('e'): # preferences are encrypted
mode = preferences[0]
preferences = preferences[1:]
if mode == 'e': # preferences are encrypted
try:
key = self._get_fernet_key(self.preferences_key)
@ -192,7 +201,7 @@ class Config:
config = pickle.loads(brotli.decompress(config))
except Exception:
config = {}
elif preferences.startswith('u'): # preferences are not encrypted
elif mode == 'u': # preferences are not encrypted
config = pickle.loads(
brotli.decompress(urlsafe_b64decode(preferences.encode()))
)