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Add extra safety checks when getting peer ID

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Lonami Exo 2018-03-10 12:13:17 +01:00
parent 1ad7712fde
commit e088fc3a4e
1 changed files with 24 additions and 0 deletions
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24
telethon/utils.py
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@ -381,6 +381,17 @@ def parse_username(username):
return None, False
def _fix_peer_id(peer_id):
"""
Fixes the peer ID for chats and channels, in case the users
mix marking the ID with the ``Peer()`` constructors.
"""
peer_id = abs(peer_id)
if str(peer_id).startswith('100'):
peer_id = str(peer_id)[3:]
return int(peer_id)
def get_peer_id(peer):
"""
Finds the ID of the given peer, and converts it to the "bot api" format
@ -408,6 +419,10 @@ def get_peer_id(peer):
if isinstance(peer, (PeerUser, InputPeerUser)):
return peer.user_id
elif isinstance(peer, (PeerChat, InputPeerChat)):
# Check in case the user mixed things up to avoid blowing up
if not (0 < peer.chat_id <= 0x7fffffff):
peer.chat_id = _fix_peer_id(peer.chat_id)
return -peer.chat_id
elif isinstance(peer, (PeerChannel, InputPeerChannel, ChannelFull)):
if isinstance(peer, ChannelFull):
@ -416,6 +431,15 @@ def get_peer_id(peer):
i = peer.id
else:
i = peer.channel_id
# Check in case the user mixed things up to avoid blowing up
if not (0 < i <= 0x7fffffff):
i = _fix_peer_id(i)
if isinstance(peer, ChannelFull):
peer.id = i
else:
peer.channel_id = i
# Concat -100 through math tricks, .to_supergroup() on Madeline
# IDs will be strictly positive -> log works
return -(i + pow(10, math.floor(math.log10(i) + 3)))