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fix(python): discard messages from other channels

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This commit is contained in:
M1nd3r 2025-04-14 16:26:24 +02:00
parent 4aaeb951f5
commit c8eae27951
1 changed files with 4 additions and 1 deletions
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5
python/src/trezorlib/transport/thp/protocol_v2.py
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@ -281,11 +281,14 @@ class ProtocolV2Channel(Channel):
def read_and_decrypt(self) -> t.Tuple[int, int, bytes]:
header, raw_payload = self._read_until_valid_crc_check()
if header.cid != self.channel_id:
# TODO fix this recursion
# Received message from different channel - discard
return self.read_and_decrypt()
if control_byte.is_ack(header.ctrl_byte):
# TODO fix this recursion
return self.read_and_decrypt()
if control_byte.is_error(header.ctrl_byte):
# TODO check for different channel
err = _get_error_from_int(raw_payload[0])
raise Exception("Received ThpError: " + err)
if not header.is_encrypted_transport():