159 lines
6.2 KiB
Python
159 lines
6.2 KiB
Python
from enum import IntEnum, auto
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from typing import Iterator, Dict, List
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from ragger.backend import BackendInterface
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from ragger.utils import RAPDU
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from ethereum_client.command_builder import EthereumCmdBuilder
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from ethereum_client.setting import SettingType, SettingImpl
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from ethereum_client.eip712 import EIP712FieldType
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from ethereum_client.response_parser import EthereumRespParser
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import signal
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import time
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class EthereumClient:
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_settings: Dict[SettingType, SettingImpl] = {
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SettingType.BLIND_SIGNING: SettingImpl(
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[ "nanos", "nanox", "nanosp" ]
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),
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SettingType.DEBUG_DATA: SettingImpl(
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[ "nanos", "nanox", "nanosp" ]
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),
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SettingType.NONCE: SettingImpl(
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[ "nanos", "nanox", "nanosp" ]
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),
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SettingType.VERBOSE_EIP712: SettingImpl(
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[ "nanox", "nanosp" ]
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)
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}
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_click_delay = 1/4
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_eip712_filtering = False
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def __init__(self, client: BackendInterface):
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self._client = client
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self._cmd_builder = EthereumCmdBuilder()
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self._resp_parser = EthereumRespParser()
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signal.signal(signal.SIGALRM, self._click_signal_timeout)
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for setting in self._settings.values():
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setting.value = False
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def _send(self, payload: bytearray):
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return self._client.exchange_async_raw(payload)
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def _recv(self) -> RAPDU:
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return self._client._last_async_response
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def _click_signal_timeout(self, _signum: int, _frame):
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self._client.right_click()
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def _enable_click_until_response(self):
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signal.setitimer(signal.ITIMER_REAL,
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self._click_delay,
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self._click_delay)
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def _disable_click_until_response(self):
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signal.setitimer(signal.ITIMER_REAL, 0, 0)
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def eip712_send_struct_def_struct_name(self, name: str):
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with self._send(self._cmd_builder.eip712_send_struct_def_struct_name(name)):
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pass
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return self._recv().status == 0x9000
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def eip712_send_struct_def_struct_field(self,
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field_type: EIP712FieldType,
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type_name: str,
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type_size: int,
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array_levels: [],
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key_name: str):
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with self._send(self._cmd_builder.eip712_send_struct_def_struct_field(
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field_type,
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type_name,
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type_size,
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array_levels,
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key_name)):
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pass
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return self._recv()
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def eip712_send_struct_impl_root_struct(self, name: str):
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with self._send(self._cmd_builder.eip712_send_struct_impl_root_struct(name)):
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self._enable_click_until_response()
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self._disable_click_until_response()
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return self._recv()
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def eip712_send_struct_impl_array(self, size: int):
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with self._send(self._cmd_builder.eip712_send_struct_impl_array(size)):
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pass
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return self._recv()
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def eip712_send_struct_impl_struct_field(self, raw_value: bytes):
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for apdu in self._cmd_builder.eip712_send_struct_impl_struct_field(raw_value):
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with self._send(apdu):
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self._enable_click_until_response()
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self._disable_click_until_response()
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assert self._recv().status == 0x9000
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def eip712_sign_new(self, bip32):
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with self._send(self._cmd_builder.eip712_sign_new(bip32)):
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time.sleep(0.5) # tight on timing, needed by the CI otherwise might fail sometimes
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if not self._settings[SettingType.VERBOSE_EIP712].value and \
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not self._eip712_filtering: # need to skip the message hash
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self._client.right_click()
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self._client.right_click()
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self._client.both_click() # approve signature
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resp = self._recv()
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assert resp.status == 0x9000
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return self._resp_parser.sign(resp.data)
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def eip712_sign_legacy(self,
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bip32,
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domain_hash: bytes,
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message_hash: bytes):
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with self._send(self._cmd_builder.eip712_sign_legacy(bip32,
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domain_hash,
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message_hash)):
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self._client.right_click() # sign typed message screen
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for _ in range(2): # two hashes (domain + message)
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if self._client.firmware.device == "nanos":
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screens_per_hash = 4
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else:
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screens_per_hash = 2
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for _ in range(screens_per_hash):
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self._client.right_click()
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self._client.both_click() # approve signature
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resp = self._recv()
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assert resp.status == 0x9000
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return self._resp_parser.sign(resp.data)
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def settings_set(self, new_values: Dict[SettingType, bool]):
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# Go to settings
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for _ in range(2):
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self._client.right_click()
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self._client.both_click()
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for enum in self._settings.keys():
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if self._client.firmware.device in self._settings[enum].devices:
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if enum in new_values.keys():
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if new_values[enum] != self._settings[enum].value:
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self._client.both_click()
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self._settings[enum].value = new_values[enum]
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self._client.right_click()
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self._client.both_click()
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def eip712_filtering_activate(self):
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with self._send(self._cmd_builder.eip712_filtering_activate()):
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pass
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self._eip712_filtering = True
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assert self._recv().status == 0x9000
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def eip712_filtering_message_info(self, name: str, filters_count: int, sig: bytes):
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with self._send(self._cmd_builder.eip712_filtering_message_info(name, filters_count, sig)):
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self._enable_click_until_response()
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self._disable_click_until_response()
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assert self._recv().status == 0x9000
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def eip712_filtering_show_field(self, name: str, sig: bytes):
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with self._send(self._cmd_builder.eip712_filtering_show_field(name, sig)):
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pass
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assert self._recv().status == 0x9000
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