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Add a hack to enable StringSession.save be (a)sync

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This commit is contained in:
Lonami Exo 2022-05-18 14:53:04 +02:00
parent 184984ac51
commit 80685191ab
1 changed files with 15 additions and 3 deletions
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18
telethon/sessions/string.py
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@ -11,6 +11,15 @@ _STRUCT_PREFORMAT = '>B{}sH256s'
CURRENT_VERSION = '1' CURRENT_VERSION = '1'
class _AsyncString(str):
"""
Ugly hack to enable awaiting strings.
"""
def __await__(self):
yield
return self
class StringSession(MemorySession): class StringSession(MemorySession):
""" """
This session file can be easily saved and loaded as a string. According This session file can be easily saved and loaded as a string. According
@ -50,14 +59,17 @@ class StringSession(MemorySession):
return base64.urlsafe_b64decode(x) return base64.urlsafe_b64decode(x)
def save(self: Session): def save(self: Session):
# save should be async but that would break code which relies on sync StringSession.
# Return a type which behaves like a string for all intents and purposes, but can be awaited.
# The await is necessary for the library to save all sessions in the same way.
if not self.auth_key: if not self.auth_key:
return '' return _AsyncString('')
ip = ipaddress.ip_address(self.server_address).packed ip = ipaddress.ip_address(self.server_address).packed
return CURRENT_VERSION + StringSession.encode(struct.pack( return _AsyncString(CURRENT_VERSION + StringSession.encode(struct.pack(
_STRUCT_PREFORMAT.format(len(ip)), _STRUCT_PREFORMAT.format(len(ip)),
self.dc_id, self.dc_id,
ip, ip,
self.port, self.port,
self.auth_key.key self.auth_key.key
)) )))