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# Pyrogram - Telegram MTProto API Client Library for Python

# This file is part of Pyrogram.

# Pyrogram is free software: you can redistribute it and/or modify

# it under the terms of the GNU Lesser General Public License as published

# by the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

# Pyrogram is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public License

# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.

from .exceptions import *

from .rpc_error import UnknownError

class BadMsgNotification(Exception):

descriptions = {

16: "The msg_id is too low, the client time has to be synchronized.",

17: "The msg_id is too high, the client time has to be synchronized.",

18: "Incorrect two lower order of the msg_id bits, the server expects the client message "

"msg_id to be divisible by 4.",

19: "The container msg_id is the same as the msg_id of a previously received message.",

20: "The message is too old, it cannot be verified by the server.",

32: "The msg_seqno is too low.",

33: "The msg_seqno is too high.",

34: "An even msg_seqno was expected, but an odd one was received.",

35: "An odd msg_seqno was expected, but an even one was received.",

48: "Incorrect server salt.",

64: "Invalid container."

}

def __init__(self, code):

description = self.descriptions.get(code, "Unknown error code")

super().__init__(f"[{code}] {description}")

class SecurityError(Exception):

"""Generic security error."""

@classmethod

def check(cls, cond: bool, msg: str):

"""Raises this exception if the condition is false"""

if not cond:

raise cls(f"Check failed: {msg}")

class SecurityCheckMismatch(SecurityError):

"""Raised when a security check mismatch occurs."""

def __init__(self, msg: str = None):

super().__init__("A security check mismatch has occurred." if msg is None else msg)

class CDNFileHashMismatch(SecurityError):

"""Raised when a CDN file hash mismatch occurs."""

def __init__(self, msg: str = None):

super().__init__("A CDN file hash mismatch has occurred." if msg is None else msg)

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