mirror of
https://github.com/trezor/trezor-firmware.git
synced 2025-01-22 13:21:03 +00:00
47 lines
1.2 KiB
Python
47 lines
1.2 KiB
Python
from trezor.loop import wait
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class MockHID:
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def __init__(self, num):
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self.num = num
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self.data = []
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self.packet = None
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def pad_packet(self, data):
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if len(data) > 64:
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raise Exception("Too long packet")
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padding_length = 64 - len(data)
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return data + b"\x00" * padding_length
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def iface_num(self):
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return self.num
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def write(self, msg):
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self.data.append(bytearray(msg))
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return len(msg)
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def mock_read(self, packet, gen):
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self.packet = self.pad_packet(packet)
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return gen.send(64)
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def read(self, buffer, offset=0):
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if self.packet is None:
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raise Exception("No packet to read")
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if offset > len(buffer):
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raise Exception("Offset out of bounds")
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buffer_space = len(buffer) - offset
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if len(self.packet) > buffer_space:
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raise Exception("Buffer too small")
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else:
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end = offset + len(self.packet)
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buffer[offset:end] = self.packet
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read = len(self.packet)
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self.packet = None
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return read
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def wait_object(self, mode):
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return wait(mode | self.num)
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