mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-17 11:58:13 +00:00
e073e619c9
isort set to skip the first necessary "from common import *" line. A better solution would be to get rid of the need of this import in the future. [no changelog]
122 lines
3.9 KiB
Python
122 lines
3.9 KiB
Python
from common import * # isort:skip
|
|
|
|
from trezor import protobuf
|
|
from trezor.messages import (
|
|
DebugLinkMemoryRead,
|
|
Failure,
|
|
SignMessage,
|
|
WebAuthnCredential,
|
|
)
|
|
|
|
|
|
def load_uvarint32(data: bytes) -> int:
|
|
# use known uint32 field in an all-optional message
|
|
buffer = bytearray(len(data) + 1)
|
|
buffer[1:] = data
|
|
buffer[0] = (1 << 3) | 0 # field number 1, wire type 0
|
|
msg = protobuf.decode(buffer, WebAuthnCredential, False)
|
|
return msg.index
|
|
|
|
|
|
def load_uvarint64(data: bytes) -> int:
|
|
# use known uint64 field in an all-optional message
|
|
buffer = bytearray(len(data) + 1)
|
|
buffer[1:] = data
|
|
buffer[0] = (2 << 3) | 0 # field number 1, wire type 0
|
|
msg = protobuf.decode(buffer, DebugLinkMemoryRead, False)
|
|
return msg.length
|
|
|
|
|
|
def dump_uvarint32(value: int) -> bytearray:
|
|
# use known uint32 field in an all-optional message
|
|
msg = WebAuthnCredential(index=value)
|
|
length = protobuf.encoded_length(msg)
|
|
buffer = bytearray(length)
|
|
protobuf.encode(buffer, msg)
|
|
assert buffer[0] == (1 << 3) | 0 # field number 1, wire type 0
|
|
return buffer[1:]
|
|
|
|
|
|
def dump_uvarint64(value: int) -> bytearray:
|
|
# use known uint64 field in an all-optional message
|
|
msg = DebugLinkMemoryRead(length=value)
|
|
length = protobuf.encoded_length(msg)
|
|
buffer = bytearray(length)
|
|
protobuf.encode(buffer, msg)
|
|
assert buffer[0] == (2 << 3) | 0 # field number 2, wire type 0
|
|
return buffer[1:]
|
|
|
|
|
|
def dump_message(msg: protobuf.MessageType) -> bytearray:
|
|
length = protobuf.encoded_length(msg)
|
|
buffer = bytearray(length)
|
|
protobuf.encode(buffer, msg)
|
|
return buffer
|
|
|
|
|
|
def load_message(
|
|
msg_type: Type[protobuf.MessageType], buffer: bytes
|
|
) -> protobuf.MessageType:
|
|
return protobuf.decode(buffer, msg_type, False)
|
|
|
|
|
|
class TestProtobuf(unittest.TestCase):
|
|
def test_dump_uvarint(self):
|
|
for dump_uvarint in (dump_uvarint32, dump_uvarint64):
|
|
self.assertEqual(dump_uvarint(0), b"\x00")
|
|
self.assertEqual(dump_uvarint(1), b"\x01")
|
|
self.assertEqual(dump_uvarint(0xFF), b"\xff\x01")
|
|
self.assertEqual(dump_uvarint(123456), b"\xc0\xc4\x07")
|
|
with self.assertRaises(OverflowError):
|
|
dump_uvarint(-1)
|
|
|
|
def test_load_uvarint(self):
|
|
for load_uvarint in (load_uvarint32, load_uvarint64):
|
|
self.assertEqual(load_uvarint(b"\x00"), 0)
|
|
self.assertEqual(load_uvarint(b"\x01"), 1)
|
|
self.assertEqual(load_uvarint(b"\xff\x01"), 0xFF)
|
|
self.assertEqual(load_uvarint(b"\xc0\xc4\x07"), 123456)
|
|
|
|
def test_validate_enum(self):
|
|
# ok message:
|
|
msg = Failure(code=7)
|
|
msg_encoded = dump_message(msg)
|
|
nmsg = load_message(Failure, msg_encoded)
|
|
|
|
self.assertEqual(msg.code, nmsg.code)
|
|
|
|
# bad enum value:
|
|
msg = Failure(code=1000)
|
|
msg_encoded = dump_message(msg)
|
|
with self.assertRaises(ValueError):
|
|
load_message(Failure, msg_encoded)
|
|
|
|
def test_required(self):
|
|
msg = SignMessage(message=b"hello", coin_name="foo", script_type=1)
|
|
msg_encoded = dump_message(msg)
|
|
nmsg = load_message(SignMessage, msg_encoded)
|
|
|
|
self.assertEqual(nmsg.message, b"hello")
|
|
self.assertEqual(nmsg.coin_name, "foo")
|
|
self.assertEqual(nmsg.script_type, 1)
|
|
|
|
# try a message without the required_field
|
|
msg = SignMessage(message=None)
|
|
# encoding always succeeds
|
|
msg_encoded = dump_message(msg)
|
|
with self.assertRaises(ValueError):
|
|
load_message(SignMessage, msg_encoded)
|
|
|
|
# try a message without the default field
|
|
msg = SignMessage(message=b"hello")
|
|
msg.coin_name = None
|
|
msg_encoded = dump_message(msg)
|
|
nmsg = load_message(SignMessage, msg_encoded)
|
|
|
|
self.assertEqual(nmsg.message, b"hello")
|
|
self.assertEqual(nmsg.coin_name, "Bitcoin")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|