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https://github.com/trezor/trezor-firmware.git
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aac7726824
This commit breaks session handling (which matters with Bridge) and regresses Bridge to an older code state. Both of these issues will be rectified in subsequent commits. Explanation of this big API reshuffle follows: * protocols are moved to trezorlib.transport, and to a single common file. * there is a cleaner definition of Transport and Protocol API (see below) * fully valid mypy type hinting * session handle counters and open handle counters mostly went away. Transports and Protocols are meant to be "raw" APIs; TrezorClient will implement context-handler-based sessions, session tracking, etc. I'm calling this a "reshuffle" because it involved very small number of code changes. Most of it is moving things around where they sit better. The API changes are as follows. Transport is now a thing that can: * open and close sessions * read and write protobuf messages * enumerate and find devices Some transports (all except bridge) are technically bytes-based and need a separate protocol implementation (because we have two existing protocols, although only the first one is actually used). Hence a protocol superclass. Protocol is a thing that *also* can: * open and close sessions * read and write protobuf messages For that, it requires a `handle`. Handle is a physical layer for a protocol. It can: * open and close some sort of device connection (this is distinct from session! Connection is a channel over which you can send data. Session is a logical arrangement on top of that; you can have multiple sessions on a single connection.) * read and write 64-byte chunks of data With that, we introduce ProtocolBasedTransport, which simply delegates the appropriate Transport functionality to respective Protocol methods. hid and webusb transports are ProtocolBasedTransport-s that provide separate device handles. HidHandle and WebUsbHandle existed before, but the distinction of functionality between a Transport and its Handle was unclear. Some methods were moved and now the handles implement the Handle API, while the transports provide the enumeration parts of the Transport API, as well as glue between the respective Protocols and Handles. udp transport is also a ProtocolBasedTransport, but it acts as its own handle. (That might be changed. For now, I went with the pre-existing structure.) In addition, session_begin/end is renamed to begin/end_session to keep consistent verb_noun naming.
109 lines
3.7 KiB
Python
109 lines
3.7 KiB
Python
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2018 SatoshiLabs and contributors
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the License along with this library.
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# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
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from trezorlib import debuglink, device
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from trezorlib.debuglink import TrezorClientDebugLink
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from trezorlib.messages.PassphraseSourceType import HOST as PASSPHRASE_ON_HOST
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from . import conftest
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class TrezorTest:
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# fmt: off
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# 1 2 3 4 5 6 7 8 9 10 11 12
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mnemonic12 = "alcohol woman abuse must during monitor noble actual mixed trade anger aisle"
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mnemonic18 = "owner little vague addict embark decide pink prosper true fork panda embody mixture exchange choose canoe electric jewel"
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mnemonic24 = "dignity pass list indicate nasty swamp pool script soccer toe leaf photo multiply desk host tomato cradle drill spread actor shine dismiss champion exotic"
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mnemonic_all = " ".join(["all"] * 12)
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# fmt: on
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pin4 = "1234"
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pin6 = "789456"
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pin8 = "45678978"
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def setup_method(self, method):
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wirelink = conftest.get_device()
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self.client = TrezorClientDebugLink(wirelink)
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# self.client.set_buttonwait(3)
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device.wipe(self.client)
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self.client.transport.begin_session()
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def teardown_method(self, method):
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self.client.transport.end_session()
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self.client.close()
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def _setup_mnemonic(self, mnemonic=None, pin="", passphrase=False):
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if mnemonic is None:
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mnemonic = TrezorTest.mnemonic12
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debuglink.load_device_by_mnemonic(
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self.client,
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mnemonic=mnemonic,
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pin=pin,
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passphrase_protection=passphrase,
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label="test",
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language="english",
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)
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if conftest.TREZOR_VERSION > 1 and passphrase:
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device.apply_settings(self.client, passphrase_source=PASSPHRASE_ON_HOST)
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def setup_mnemonic_allallall(self):
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self._setup_mnemonic(mnemonic=TrezorTest.mnemonic_all)
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def setup_mnemonic_nopin_nopassphrase(self):
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self._setup_mnemonic()
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def setup_mnemonic_nopin_passphrase(self):
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self._setup_mnemonic(passphrase=True)
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def setup_mnemonic_pin_nopassphrase(self):
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self._setup_mnemonic(pin=TrezorTest.pin4)
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def setup_mnemonic_pin_passphrase(self):
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self._setup_mnemonic(pin=TrezorTest.pin4, passphrase=True)
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def generate_entropy(strength, internal_entropy, external_entropy):
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"""
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strength - length of produced seed. One of 128, 192, 256
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random - binary stream of random data from external HRNG
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"""
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import hashlib
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if strength not in (128, 192, 256):
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raise ValueError("Invalid strength")
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if not internal_entropy:
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raise ValueError("Internal entropy is not provided")
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if len(internal_entropy) < 32:
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raise ValueError("Internal entropy too short")
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if not external_entropy:
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raise ValueError("External entropy is not provided")
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if len(external_entropy) < 32:
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raise ValueError("External entropy too short")
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entropy = hashlib.sha256(internal_entropy + external_entropy).digest()
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entropy_stripped = entropy[: strength // 8]
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if len(entropy_stripped) * 8 != strength:
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raise ValueError("Entropy length mismatch")
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return entropy_stripped
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