mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-24 08:28:12 +00:00
317 lines
8.8 KiB
Python
317 lines
8.8 KiB
Python
# This file is part of the Trezor project.
|
|
#
|
|
# Copyright (C) 2012-2022 SatoshiLabs and contributors
|
|
#
|
|
# This library is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser General Public License version 3
|
|
# as published by the Free Software Foundation.
|
|
#
|
|
# This library 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 License along with this library.
|
|
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
|
|
|
|
import logging
|
|
from enum import IntEnum
|
|
from io import BytesIO
|
|
|
|
import pytest
|
|
|
|
from trezorlib import protobuf
|
|
|
|
|
|
class SomeEnum(IntEnum):
|
|
Zero = 0
|
|
Five = 5
|
|
TwentyFive = 25
|
|
|
|
|
|
class WiderEnum(IntEnum):
|
|
One = 1
|
|
Two = 2
|
|
Three = 3
|
|
Four = 4
|
|
Five = 5
|
|
|
|
|
|
class NarrowerEnum(IntEnum):
|
|
One = 1
|
|
Five = 5
|
|
|
|
|
|
class PrimitiveMessage(protobuf.MessageType):
|
|
FIELDS = {
|
|
1: protobuf.Field("uvarint", "uint64"),
|
|
2: protobuf.Field("svarint", "sint64"),
|
|
3: protobuf.Field("bool", "bool"),
|
|
4: protobuf.Field("bytes", "bytes"),
|
|
5: protobuf.Field("unicode", "string"),
|
|
6: protobuf.Field("enum", "SomeEnum"),
|
|
}
|
|
|
|
|
|
class EnumMessageMoreValues(protobuf.MessageType):
|
|
FIELDS = {1: protobuf.Field("enum", "WiderEnum")}
|
|
|
|
|
|
class EnumMessageLessValues(protobuf.MessageType):
|
|
FIELDS = {1: protobuf.Field("enum", "NarrowerEnum")}
|
|
|
|
|
|
class RepeatedFields(protobuf.MessageType):
|
|
FIELDS = {
|
|
1: protobuf.Field("uintlist", "uint64", repeated=True),
|
|
2: protobuf.Field("enumlist", "SomeEnum", repeated=True),
|
|
3: protobuf.Field("strlist", "string", repeated=True),
|
|
}
|
|
|
|
|
|
class RequiredFields(protobuf.MessageType):
|
|
FIELDS = {
|
|
1: protobuf.Field("uvarint", "uint64", required=True),
|
|
2: protobuf.Field("nested", "PrimitiveMessage", required=True),
|
|
}
|
|
|
|
|
|
class DefaultFields(protobuf.MessageType):
|
|
FIELDS = {
|
|
1: protobuf.Field("uvarint", "uint32", default=42),
|
|
2: protobuf.Field("svarint", "sint32", default=-42),
|
|
3: protobuf.Field("bool", "bool", default=True),
|
|
4: protobuf.Field("bytes", "bytes", default=b"hello"),
|
|
5: protobuf.Field("unicode", "string", default="hello"),
|
|
6: protobuf.Field("enum", "SomeEnum", default=SomeEnum.Five),
|
|
}
|
|
|
|
|
|
class RecursiveMessage(protobuf.MessageType):
|
|
FIELDS = {
|
|
1: protobuf.Field("uvarint", "uint64"),
|
|
2: protobuf.Field("recursivefield", "RecursiveMessage", required=False),
|
|
}
|
|
|
|
|
|
def load_uvarint(buffer):
|
|
reader = BytesIO(buffer)
|
|
return protobuf.load_uvarint(reader)
|
|
|
|
|
|
def dump_uvarint(value):
|
|
writer = BytesIO()
|
|
protobuf.dump_uvarint(writer, value)
|
|
return writer.getvalue()
|
|
|
|
|
|
def load_message(buffer, msg_type):
|
|
reader = BytesIO(buffer)
|
|
return protobuf.load_message(reader, msg_type)
|
|
|
|
|
|
def dump_message(msg):
|
|
writer = BytesIO()
|
|
protobuf.dump_message(writer, msg)
|
|
return writer.getvalue()
|
|
|
|
|
|
def test_dump_uvarint():
|
|
assert dump_uvarint(0) == b"\x00"
|
|
assert dump_uvarint(1) == b"\x01"
|
|
assert dump_uvarint(0xFF) == b"\xff\x01"
|
|
assert dump_uvarint(123456) == b"\xc0\xc4\x07"
|
|
|
|
with pytest.raises(ValueError):
|
|
dump_uvarint(-1)
|
|
|
|
|
|
def test_load_uvarint():
|
|
assert load_uvarint(b"\x00") == 0
|
|
assert load_uvarint(b"\x01") == 1
|
|
assert load_uvarint(b"\xff\x01") == 0xFF
|
|
assert load_uvarint(b"\xc0\xc4\x07") == 123456
|
|
assert load_uvarint(b"\x80\x80\x80\x80\x00") == 0
|
|
|
|
|
|
def test_broken_uvarint():
|
|
with pytest.raises(IOError):
|
|
load_uvarint(b"\x80\x80")
|
|
|
|
|
|
def test_sint_uint():
|
|
"""
|
|
Protobuf interleaved signed encoding
|
|
https://developers.google.com/protocol-buffers/docs/encoding#structure
|
|
LSbit is sign, rest is shifted absolute value.
|
|
Or, by example, you count like so: 0, -1, 1, -2, 2, -3 ...
|
|
"""
|
|
assert protobuf.sint_to_uint(0) == 0
|
|
assert protobuf.uint_to_sint(0) == 0
|
|
|
|
assert protobuf.sint_to_uint(-1) == 1
|
|
assert protobuf.sint_to_uint(1) == 2
|
|
|
|
assert protobuf.uint_to_sint(1) == -1
|
|
assert protobuf.uint_to_sint(2) == 1
|
|
|
|
# roundtrip:
|
|
assert protobuf.uint_to_sint(protobuf.sint_to_uint(1234567891011)) == 1234567891011
|
|
assert protobuf.uint_to_sint(protobuf.sint_to_uint(-(2**32))) == -(2**32)
|
|
|
|
|
|
def test_simple_message():
|
|
msg = PrimitiveMessage(
|
|
uvarint=12345678910,
|
|
svarint=-12345678910,
|
|
bool=True,
|
|
bytes=b"\xDE\xAD\xCA\xFE",
|
|
unicode="Příliš žluťoučký kůň úpěl ďábelské ódy 😊",
|
|
enum=SomeEnum.Five,
|
|
)
|
|
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, PrimitiveMessage)
|
|
|
|
assert msg == retr
|
|
assert retr.uvarint == 12345678910
|
|
assert retr.svarint == -12345678910
|
|
assert retr.bool is True
|
|
assert retr.bytes == b"\xDE\xAD\xCA\xFE"
|
|
assert retr.unicode == "Příliš žluťoučký kůň úpěl ďábelské ódy 😊"
|
|
assert retr.enum == SomeEnum.Five
|
|
assert retr.enum == 5
|
|
|
|
|
|
def test_validate_enum(caplog):
|
|
caplog.set_level(logging.INFO)
|
|
# round-trip of a valid value
|
|
msg = EnumMessageMoreValues(enum=WiderEnum.Five)
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, EnumMessageLessValues)
|
|
assert retr.enum == msg.enum
|
|
|
|
assert not caplog.records
|
|
|
|
# dumping an invalid enum value fails
|
|
msg.enum = 19
|
|
with pytest.raises(
|
|
ValueError, match="Value 19 in field enum unknown for WiderEnum"
|
|
):
|
|
dump_message(msg)
|
|
|
|
msg.enum = WiderEnum.Three
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, EnumMessageLessValues)
|
|
|
|
assert len(caplog.records) == 1
|
|
record = caplog.records.pop(0)
|
|
assert record.levelname == "INFO"
|
|
assert record.getMessage() == "On field enum: 3 is not a valid NarrowerEnum"
|
|
assert retr.enum == 3
|
|
|
|
|
|
def test_repeated():
|
|
msg = RepeatedFields(
|
|
uintlist=[1, 2, 3], enumlist=[0, 5, 0, 5], strlist=["hello", "world"]
|
|
)
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, RepeatedFields)
|
|
|
|
assert retr == msg
|
|
|
|
|
|
def test_packed():
|
|
values = [4, 44, 444]
|
|
packed_values = b"".join(dump_uvarint(v) for v in values)
|
|
field_id = 1 << 3 | 2 # field number 1, wire type 2
|
|
field_len = len(packed_values)
|
|
message_bytes = dump_uvarint(field_id) + dump_uvarint(field_len) + packed_values
|
|
|
|
msg = load_message(message_bytes, RepeatedFields)
|
|
assert msg
|
|
assert msg.uintlist == values
|
|
assert not msg.enumlist
|
|
assert not msg.strlist
|
|
|
|
|
|
def test_packed_enum():
|
|
values = [0, 0, 0, 0]
|
|
packed_values = b"".join(dump_uvarint(v) for v in values)
|
|
field_id = 2 << 3 | 2 # field number 2, wire type 2
|
|
field_len = len(packed_values)
|
|
message_bytes = dump_uvarint(field_id) + dump_uvarint(field_len) + packed_values
|
|
|
|
msg = load_message(message_bytes, RepeatedFields)
|
|
assert msg
|
|
assert msg.enumlist == values
|
|
assert not msg.uintlist
|
|
assert not msg.strlist
|
|
|
|
|
|
def test_required():
|
|
msg = RequiredFields(uvarint=3, nested=PrimitiveMessage())
|
|
buf = dump_message(msg)
|
|
msg_ok = load_message(buf, RequiredFields)
|
|
|
|
assert msg_ok == msg
|
|
|
|
with pytest.deprecated_call():
|
|
msg = RequiredFields(uvarint=3)
|
|
with pytest.raises(ValueError):
|
|
# cannot encode instance without the required fields
|
|
dump_message(msg)
|
|
|
|
msg = RequiredFields(uvarint=3, nested=None)
|
|
# we can always encode an invalid message
|
|
buf = dump_message(msg)
|
|
with pytest.raises(ValueError):
|
|
# required field `nested` is also not sent
|
|
load_message(buf, RequiredFields)
|
|
|
|
msg = RequiredFields(uvarint=None, nested=PrimitiveMessage())
|
|
buf = dump_message(msg)
|
|
with pytest.raises(ValueError):
|
|
# required field `uvarint` is not sent
|
|
load_message(buf, RequiredFields)
|
|
|
|
|
|
def test_default():
|
|
# load empty message
|
|
retr = load_message(b"", DefaultFields)
|
|
assert retr.uvarint == 42
|
|
assert retr.svarint == -42
|
|
assert retr.bool is True
|
|
assert retr.bytes == b"hello"
|
|
assert retr.unicode == "hello"
|
|
assert retr.enum == SomeEnum.Five
|
|
|
|
msg = DefaultFields(uvarint=0)
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, DefaultFields)
|
|
assert retr.uvarint == 0
|
|
|
|
msg = DefaultFields(uvarint=None)
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, DefaultFields)
|
|
assert retr.uvarint == 42
|
|
|
|
|
|
def test_recursive():
|
|
msg = RecursiveMessage(
|
|
uvarint=1,
|
|
recursivefield=RecursiveMessage(
|
|
uvarint=2, recursivefield=RecursiveMessage(uvarint=3)
|
|
),
|
|
)
|
|
|
|
buf = dump_message(msg)
|
|
retr = load_message(buf, RecursiveMessage)
|
|
|
|
assert msg == retr
|
|
assert retr.uvarint == 1
|
|
assert type(retr.recursivefield) is RecursiveMessage
|
|
assert retr.recursivefield.uvarint == 2
|
|
assert type(retr.recursivefield.recursivefield) is RecursiveMessage
|
|
assert retr.recursivefield.recursivefield.uvarint == 3
|