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1323 lines
47 KiB
1323 lines
47 KiB
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2022 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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import json
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import logging
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import re
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import textwrap
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import time
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from copy import deepcopy
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from datetime import datetime
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from enum import IntEnum
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from itertools import zip_longest
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from pathlib import Path
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from typing import (
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TYPE_CHECKING,
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Any,
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Callable,
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Dict,
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Generator,
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Iterable,
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Iterator,
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List,
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Optional,
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Sequence,
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Tuple,
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Type,
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Union,
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overload,
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)
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from mnemonic import Mnemonic
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from typing_extensions import Literal
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from . import mapping, messages, protobuf
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from .client import TrezorClient
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from .exceptions import TrezorFailure
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from .log import DUMP_BYTES
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from .tools import expect
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if TYPE_CHECKING:
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from .messages import PinMatrixRequestType
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from .transport import Transport
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ExpectedMessage = Union[
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protobuf.MessageType, Type[protobuf.MessageType], "MessageFilter"
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]
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AnyDict = Dict[str, Any]
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EXPECTED_RESPONSES_CONTEXT_LINES = 3
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LOG = logging.getLogger(__name__)
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class UnstructuredJSONReader:
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"""Contains data-parsing helpers for JSON data that have unknown structure."""
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def __init__(self, json_str: str) -> None:
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self.json_str = json_str
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# We may not receive valid JSON, e.g. from an old model in upgrade tests
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try:
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self.dict: "AnyDict" = json.loads(json_str)
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except json.JSONDecodeError:
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self.dict = {}
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def top_level_value(self, key: str) -> Any:
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return self.dict.get(key)
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def find_objects_with_key_and_value(self, key: str, value: Any) -> List["AnyDict"]:
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def recursively_find(data: Any) -> Iterator[Any]:
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if isinstance(data, dict):
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if data.get(key) == value:
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yield data
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for val in data.values():
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yield from recursively_find(val)
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elif isinstance(data, list):
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for item in data:
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yield from recursively_find(item)
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return list(recursively_find(self.dict))
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def find_unique_object_with_key_and_value(
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self, key: str, value: Any
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) -> Optional["AnyDict"]:
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objects = self.find_objects_with_key_and_value(key, value)
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if not objects:
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return None
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assert len(objects) == 1
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return objects[0]
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def find_values_by_key(
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self, key: str, only_type: Optional[type] = None
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) -> List[Any]:
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def recursively_find(data: Any) -> Iterator[Any]:
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if isinstance(data, dict):
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if key in data:
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yield data[key]
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for val in data.values():
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yield from recursively_find(val)
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elif isinstance(data, list):
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for item in data:
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yield from recursively_find(item)
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values = list(recursively_find(self.dict))
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if only_type is not None:
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values = [v for v in values if isinstance(v, only_type)]
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return values
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def find_unique_value_by_key(
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self, key: str, default: Any, only_type: Optional[type] = None
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) -> Any:
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values = self.find_values_by_key(key, only_type=only_type)
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if not values:
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return default
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assert len(values) == 1
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return values[0]
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class LayoutContent(UnstructuredJSONReader):
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"""Contains helper functions to extract specific parts of the layout."""
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def __init__(self, json_tokens: Sequence[str]) -> None:
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json_str = "".join(json_tokens)
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super().__init__(json_str)
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def main_component(self) -> str:
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"""Getting the main component of the layout."""
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return self.top_level_value("component") or "no main component"
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def all_components(self) -> List[str]:
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"""Getting all components of the layout."""
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return self.find_values_by_key("component", only_type=str)
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def visible_screen(self) -> str:
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"""String representation of a current screen content.
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Example:
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SIGN TRANSACTION
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--------------------
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You are about to
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sign 3 actions.
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********************
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ICON_CANCEL, -, CONFIRM
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"""
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title_separator = f"\n{20*'-'}\n"
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btn_separator = f"\n{20*'*'}\n"
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visible = ""
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if self.title():
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visible += self.title()
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visible += title_separator
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visible += self.screen_content()
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visible_buttons = self.button_contents()
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if visible_buttons:
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visible += btn_separator
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visible += ", ".join(visible_buttons)
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return visible
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def title(self) -> str:
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"""Getting text that is displayed as a title."""
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# There could be possibly subtitle as well
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title_parts: List[str] = []
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def _get_str_or_dict_text(key: str) -> str:
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value = self.find_unique_value_by_key(key, "")
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if isinstance(value, dict):
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return value["text"]
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return value
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title = _get_str_or_dict_text("title")
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if title:
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title_parts.append(title)
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subtitle = _get_str_or_dict_text("subtitle")
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if subtitle:
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title_parts.append(subtitle)
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return "\n".join(title_parts)
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def text_content(self) -> str:
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"""What is on the screen, in one long string, so content can be
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asserted regardless of newlines. Also getting rid of possible ellipsis.
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"""
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content = self.screen_content().replace("\n", " ")
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if content.endswith("..."):
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content = content[:-3]
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if content.startswith("..."):
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content = content[3:]
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return content
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def screen_content(self) -> str:
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"""Getting text that is displayed in the main part of the screen.
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Preserving the line breaks.
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"""
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# Look for paragraphs first (will match most of the time for TT)
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paragraphs = self.raw_content_paragraphs()
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if paragraphs:
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main_text_blocks: List[str] = []
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for par in paragraphs:
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par_content = ""
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for line_or_newline in par:
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par_content += line_or_newline
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par_content.replace("\n", " ")
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main_text_blocks.append(par_content)
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return "\n".join(main_text_blocks)
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# Formatted text
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formatted_text = self.find_unique_object_with_key_and_value(
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"component", "FormattedText"
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)
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if formatted_text:
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text_lines = formatted_text["text"]
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return "".join(text_lines)
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# Check the choice_page - mainly for TR
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choice_page = self.find_unique_object_with_key_and_value(
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"component", "ChoicePage"
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)
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if choice_page:
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left = choice_page.get("prev_choice", {}).get("content", "")
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middle = choice_page.get("current_choice", {}).get("content", "")
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right = choice_page.get("next_choice", {}).get("content", "")
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return " ".join(choice for choice in (left, middle, right) if choice)
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# Screen content - in TR share words
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screen_content = self.find_unique_value_by_key(
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"screen_content", default="", only_type=str
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)
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if screen_content:
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return screen_content
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# Flow page - for TR
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flow_page = self.find_unique_value_by_key(
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"flow_page", default={}, only_type=dict
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)
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if flow_page:
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text_lines = flow_page["text"]
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return "".join(text_lines)
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# Looking for any "text": "something" values
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text_values = self.find_values_by_key("text", only_type=str)
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if text_values:
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return "\n".join(text_values)
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# Default when not finding anything
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return self.main_component()
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def raw_content_paragraphs(self) -> Optional[List[List[str]]]:
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"""Getting raw paragraphs as sent from Rust."""
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return self.find_unique_value_by_key("paragraphs", default=None, only_type=list)
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def tt_check_seed_button_contents(self) -> List[str]:
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"""Getting list of button contents."""
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buttons: List[str] = []
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button_objects = self.find_objects_with_key_and_value("component", "Button")
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for button in button_objects:
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if button.get("icon"):
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buttons.append("ICON")
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elif "text" in button:
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buttons.append(button["text"])
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return buttons
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def button_contents(self) -> List[str]:
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"""Getting list of button contents."""
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buttons = self.find_unique_value_by_key("buttons", default={}, only_type=dict)
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def get_button_content(btn_key: str) -> str:
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button_obj = buttons.get(btn_key, {})
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if button_obj.get("component") == "Button":
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if "icon" in button_obj:
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return button_obj["icon"]
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elif "text" in button_obj:
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return button_obj["text"]
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elif button_obj.get("component") == "HoldToConfirm":
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text = button_obj.get("loader", {}).get("text", "")
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duration = button_obj.get("loader", {}).get("duration", "")
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return f"{text} ({duration}ms)"
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# default value
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return "-"
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button_keys = ("left_btn", "middle_btn", "right_btn")
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return [get_button_content(btn_key) for btn_key in button_keys]
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def seed_words(self) -> List[str]:
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"""Get all the seed words on the screen in order.
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Example content: "1. ladybug\n2. acid\n3. academic\n4. afraid"
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-> ["ladybug", "acid", "academic", "afraid"]
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"""
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words: List[str] = []
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for line in self.screen_content().split("\n"):
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# Dot after index is optional (present on TT, not on TR)
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match = re.match(r"^\s*\d+\.? (\w+)$", line)
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if match:
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words.append(match.group(1))
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return words
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def pin(self) -> str:
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"""Get PIN from the layout."""
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assert "PinKeyboard" in self.all_components()
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return self.find_unique_value_by_key("pin", default="", only_type=str)
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def passphrase(self) -> str:
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"""Get passphrase from the layout."""
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assert "PassphraseKeyboard" in self.all_components()
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return self.find_unique_value_by_key("passphrase", default="", only_type=str)
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def page_count(self) -> int:
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"""Get number of pages for the layout."""
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return (
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self.find_unique_value_by_key(
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"scrollbar_page_count", default=0, only_type=int
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)
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or self.find_unique_value_by_key("page_count", default=0, only_type=int)
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or 1
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)
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def active_page(self) -> int:
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"""Get current page index of the layout."""
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return self.find_unique_value_by_key("active_page", default=0, only_type=int)
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def tt_pin_digits_order(self) -> str:
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"""In what order the PIN buttons are shown on the screen. Only for TT."""
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return self.top_level_value("digits_order") or "no digits order"
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def get_middle_choice(self) -> str:
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"""What is the choice being selected right now."""
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return self.choice_items()[1]
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def choice_items(self) -> Tuple[str, str, str]:
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"""Getting actions for all three possible buttons."""
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choice_obj = self.find_unique_value_by_key(
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"choice_page", default={}, only_type=dict
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)
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if not choice_obj:
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raise RuntimeError("No choice_page object in trace")
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choice_keys = ("prev_choice", "current_choice", "next_choice")
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return tuple(
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choice_obj.get(choice, {}).get("content", "") for choice in choice_keys
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)
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def multipage_content(layouts: List[LayoutContent]) -> str:
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"""Get overall content from multiple-page layout."""
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return "".join(layout.text_content() for layout in layouts)
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class DebugLink:
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def __init__(self, transport: "Transport", auto_interact: bool = True) -> None:
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self.transport = transport
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self.allow_interactions = auto_interact
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self.mapping = mapping.DEFAULT_MAPPING
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# To be set by TrezorClientDebugLink (is not known during creation time)
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self.model: Optional[str] = None
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self.version: Tuple[int, int, int] = (0, 0, 0)
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# Where screenshots are being saved
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self.screenshot_recording_dir: Optional[str] = None
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# For T1 screenshotting functionality in DebugUI
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self.t1_take_screenshots = False
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self.t1_screenshot_directory: Optional[Path] = None
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self.t1_screenshot_counter = 0
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# Optional file for saving text representation of the screen
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self.screen_text_file: Optional[Path] = None
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self.last_screen_content = ""
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@property
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def legacy_ui(self) -> bool:
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"""Differences between UI1 and UI2."""
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return self.version < (2, 6, 0)
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@property
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def legacy_debug(self) -> bool:
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"""Differences in handling debug events and LayoutContent."""
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return self.version < (2, 6, 1)
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def set_screen_text_file(self, file_path: Optional[Path]) -> None:
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if file_path is not None:
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file_path.write_bytes(b"")
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self.screen_text_file = file_path
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def open(self) -> None:
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self.transport.begin_session()
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def close(self) -> None:
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self.transport.end_session()
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def _call(self, msg: protobuf.MessageType, nowait: bool = False) -> Any:
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LOG.debug(
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f"sending message: {msg.__class__.__name__}",
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extra={"protobuf": msg},
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)
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msg_type, msg_bytes = self.mapping.encode(msg)
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LOG.log(
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DUMP_BYTES,
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f"encoded as type {msg_type} ({len(msg_bytes)} bytes): {msg_bytes.hex()}",
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)
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self.transport.write(msg_type, msg_bytes)
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if nowait:
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return None
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ret_type, ret_bytes = self.transport.read()
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LOG.log(
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DUMP_BYTES,
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f"received type {msg_type} ({len(msg_bytes)} bytes): {msg_bytes.hex()}",
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)
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msg = self.mapping.decode(ret_type, ret_bytes)
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LOG.debug(
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f"received message: {msg.__class__.__name__}",
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extra={"protobuf": msg},
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)
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return msg
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def state(self) -> messages.DebugLinkState:
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return self._call(messages.DebugLinkGetState())
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def read_layout(self) -> LayoutContent:
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return LayoutContent(self.state().tokens or [])
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def wait_layout(self, wait_for_external_change: bool = False) -> LayoutContent:
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# Next layout change will be caused by external event
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# (e.g. device being auto-locked or as a result of device_handler.run(xxx))
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# and not by our debug actions/decisions.
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# Resetting the debug state so we wait for the next layout change
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# (and do not return the current state).
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if wait_for_external_change:
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self.reset_debug_events()
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obj = self._call(messages.DebugLinkGetState(wait_layout=True))
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if isinstance(obj, messages.Failure):
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raise TrezorFailure(obj)
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return LayoutContent(obj.tokens)
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def reset_debug_events(self) -> None:
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# Only supported on TT and above certain version
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if self.model in ("T", "Safe 3") and not self.legacy_debug:
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return self._call(messages.DebugLinkResetDebugEvents())
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return None
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def synchronize_at(self, layout_text: str, timeout: float = 5) -> LayoutContent:
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now = time.monotonic()
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while True:
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layout = self.read_layout()
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if layout_text in layout.json_str:
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return layout
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if time.monotonic() - now > timeout:
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raise RuntimeError("Timeout waiting for layout")
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time.sleep(0.1)
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def watch_layout(self, watch: bool) -> None:
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"""Enable or disable watching layouts.
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If disabled, wait_layout will not work.
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The message is missing on T1. Use `TrezorClientDebugLink.watch_layout` for
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cross-version compatibility.
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"""
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self._call(messages.DebugLinkWatchLayout(watch=watch))
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def encode_pin(self, pin: str, matrix: Optional[str] = None) -> str:
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"""Transform correct PIN according to the displayed matrix."""
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if matrix is None:
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matrix = self.state().matrix
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if matrix is None:
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# we are on trezor-core
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return pin
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return "".join([str(matrix.index(p) + 1) for p in pin])
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def read_recovery_word(self) -> Tuple[Optional[str], Optional[int]]:
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state = self.state()
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return (state.recovery_fake_word, state.recovery_word_pos)
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def read_reset_word(self) -> str:
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state = self._call(messages.DebugLinkGetState(wait_word_list=True))
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return state.reset_word
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def input(
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self,
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word: Optional[str] = None,
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button: Optional[messages.DebugButton] = None,
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physical_button: Optional[messages.DebugPhysicalButton] = None,
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swipe: Optional[messages.DebugSwipeDirection] = None,
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x: Optional[int] = None,
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y: Optional[int] = None,
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wait: Optional[bool] = None,
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hold_ms: Optional[int] = None,
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) -> Optional[LayoutContent]:
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if not self.allow_interactions:
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return None
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args = sum(a is not None for a in (word, button, physical_button, swipe, x))
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if args != 1:
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raise ValueError(
|
|
"Invalid input - must use one of word, button, physical_button, swipe, click(x,y)"
|
|
)
|
|
|
|
decision = messages.DebugLinkDecision(
|
|
button=button,
|
|
physical_button=physical_button,
|
|
swipe=swipe,
|
|
input=word,
|
|
x=x,
|
|
y=y,
|
|
wait=wait,
|
|
hold_ms=hold_ms,
|
|
)
|
|
|
|
ret = self._call(decision, nowait=not wait)
|
|
if ret is not None:
|
|
return LayoutContent(ret.tokens)
|
|
|
|
# Getting the current screen after the (nowait) decision
|
|
self.save_current_screen_if_relevant(wait=False)
|
|
|
|
return None
|
|
|
|
def save_current_screen_if_relevant(self, wait: bool = True) -> None:
|
|
"""Optionally saving the textual screen output."""
|
|
if self.screen_text_file is None:
|
|
return
|
|
|
|
if wait:
|
|
layout = self.wait_layout()
|
|
else:
|
|
layout = self.read_layout()
|
|
self.save_debug_screen(layout.visible_screen())
|
|
|
|
def save_debug_screen(self, screen_content: str) -> None:
|
|
if self.screen_text_file is None:
|
|
return
|
|
|
|
if not self.screen_text_file.exists():
|
|
self.screen_text_file.write_bytes(b"")
|
|
|
|
# Not writing the same screen twice
|
|
if screen_content == self.last_screen_content:
|
|
return
|
|
|
|
self.last_screen_content = screen_content
|
|
|
|
with open(self.screen_text_file, "a") as f:
|
|
f.write(screen_content)
|
|
f.write("\n" + 80 * "/" + "\n")
|
|
|
|
# Type overloads below make sure that when we supply `wait=True` into functions,
|
|
# they will always return `LayoutContent` and we do not need to assert `is not None`.
|
|
|
|
@overload
|
|
def click(self, click: Tuple[int, int]) -> None: ...
|
|
|
|
@overload
|
|
def click(self, click: Tuple[int, int], wait: Literal[True]) -> LayoutContent: ...
|
|
|
|
def click(
|
|
self, click: Tuple[int, int], wait: bool = False
|
|
) -> Optional[LayoutContent]:
|
|
x, y = click
|
|
return self.input(x=x, y=y, wait=wait)
|
|
|
|
# Made into separate function as `hold_ms: Optional[int]` in `click`
|
|
# was causing problems with @overload
|
|
def click_hold(
|
|
self, click: Tuple[int, int], hold_ms: int
|
|
) -> Optional[LayoutContent]:
|
|
x, y = click
|
|
return self.input(x=x, y=y, hold_ms=hold_ms, wait=True)
|
|
|
|
def press_yes(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(button=messages.DebugButton.YES, wait=wait)
|
|
|
|
def press_no(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(button=messages.DebugButton.NO, wait=wait)
|
|
|
|
def press_info(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(button=messages.DebugButton.INFO, wait=wait)
|
|
|
|
def swipe_up(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(swipe=messages.DebugSwipeDirection.UP, wait=wait)
|
|
|
|
def swipe_down(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(swipe=messages.DebugSwipeDirection.DOWN, wait=wait)
|
|
|
|
@overload
|
|
def swipe_right(self) -> None: ...
|
|
|
|
@overload
|
|
def swipe_right(self, wait: Literal[True]) -> LayoutContent: ...
|
|
|
|
def swipe_right(self, wait: bool = False) -> Union[LayoutContent, None]:
|
|
return self.input(swipe=messages.DebugSwipeDirection.RIGHT, wait=wait)
|
|
|
|
@overload
|
|
def swipe_left(self) -> None: ...
|
|
|
|
@overload
|
|
def swipe_left(self, wait: Literal[True]) -> LayoutContent: ...
|
|
|
|
def swipe_left(self, wait: bool = False) -> Union[LayoutContent, None]:
|
|
return self.input(swipe=messages.DebugSwipeDirection.LEFT, wait=wait)
|
|
|
|
@overload
|
|
def press_left(self) -> None: ...
|
|
|
|
@overload
|
|
def press_left(self, wait: Literal[True]) -> LayoutContent: ...
|
|
|
|
def press_left(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(
|
|
physical_button=messages.DebugPhysicalButton.LEFT_BTN, wait=wait
|
|
)
|
|
|
|
@overload
|
|
def press_middle(self) -> None: ...
|
|
|
|
@overload
|
|
def press_middle(self, wait: Literal[True]) -> LayoutContent: ...
|
|
|
|
def press_middle(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(
|
|
physical_button=messages.DebugPhysicalButton.MIDDLE_BTN, wait=wait
|
|
)
|
|
|
|
def press_middle_htc(
|
|
self, hold_ms: int, extra_ms: int = 200
|
|
) -> Optional[LayoutContent]:
|
|
return self.press_htc(
|
|
button=messages.DebugPhysicalButton.MIDDLE_BTN,
|
|
hold_ms=hold_ms,
|
|
extra_ms=extra_ms,
|
|
)
|
|
|
|
@overload
|
|
def press_right(self) -> None: ...
|
|
|
|
@overload
|
|
def press_right(self, wait: Literal[True]) -> LayoutContent: ...
|
|
|
|
def press_right(self, wait: bool = False) -> Optional[LayoutContent]:
|
|
return self.input(
|
|
physical_button=messages.DebugPhysicalButton.RIGHT_BTN, wait=wait
|
|
)
|
|
|
|
def press_right_htc(
|
|
self, hold_ms: int, extra_ms: int = 200
|
|
) -> Optional[LayoutContent]:
|
|
return self.press_htc(
|
|
button=messages.DebugPhysicalButton.RIGHT_BTN,
|
|
hold_ms=hold_ms,
|
|
extra_ms=extra_ms,
|
|
)
|
|
|
|
def press_htc(
|
|
self, button: messages.DebugPhysicalButton, hold_ms: int, extra_ms: int = 200
|
|
) -> Optional[LayoutContent]:
|
|
hold_ms = hold_ms + extra_ms # safety margin
|
|
result = self.input(
|
|
physical_button=button,
|
|
hold_ms=hold_ms,
|
|
)
|
|
# sleeping little longer for UI to update
|
|
time.sleep(hold_ms / 1000 + 0.1)
|
|
return result
|
|
|
|
def stop(self) -> None:
|
|
self._call(messages.DebugLinkStop(), nowait=True)
|
|
|
|
def reseed(self, value: int) -> protobuf.MessageType:
|
|
return self._call(messages.DebugLinkReseedRandom(value=value))
|
|
|
|
def start_recording(
|
|
self, directory: str, refresh_index: Optional[int] = None
|
|
) -> None:
|
|
self.screenshot_recording_dir = directory
|
|
# Different recording logic between core and legacy
|
|
if self.model in ("T", "Safe 3"):
|
|
self._call(
|
|
messages.DebugLinkRecordScreen(
|
|
target_directory=directory, refresh_index=refresh_index
|
|
)
|
|
)
|
|
else:
|
|
self.t1_screenshot_directory = Path(directory)
|
|
self.t1_screenshot_counter = 0
|
|
self.t1_take_screenshots = True
|
|
|
|
def stop_recording(self) -> None:
|
|
self.screenshot_recording_dir = None
|
|
# Different recording logic between TT and T1
|
|
if self.model in ("T", "Safe 3"):
|
|
self._call(messages.DebugLinkRecordScreen(target_directory=None))
|
|
else:
|
|
self.t1_take_screenshots = False
|
|
|
|
@expect(messages.DebugLinkMemory, field="memory", ret_type=bytes)
|
|
def memory_read(self, address: int, length: int) -> protobuf.MessageType:
|
|
return self._call(messages.DebugLinkMemoryRead(address=address, length=length))
|
|
|
|
def memory_write(self, address: int, memory: bytes, flash: bool = False) -> None:
|
|
self._call(
|
|
messages.DebugLinkMemoryWrite(address=address, memory=memory, flash=flash),
|
|
nowait=True,
|
|
)
|
|
|
|
def flash_erase(self, sector: int) -> None:
|
|
self._call(messages.DebugLinkFlashErase(sector=sector), nowait=True)
|
|
|
|
@expect(messages.Success)
|
|
def erase_sd_card(self, format: bool = True) -> messages.Success:
|
|
return self._call(messages.DebugLinkEraseSdCard(format=format))
|
|
|
|
def take_t1_screenshot_if_relevant(self) -> None:
|
|
"""Conditionally take screenshots on T1.
|
|
|
|
TT handles them differently, see debuglink.start_recording.
|
|
"""
|
|
if self.model == "1" and self.t1_take_screenshots:
|
|
self.save_screenshot_for_t1()
|
|
|
|
def save_screenshot_for_t1(self) -> None:
|
|
from PIL import Image
|
|
|
|
layout = self.state().layout
|
|
assert layout is not None
|
|
assert len(layout) == 128 * 64 // 8
|
|
|
|
pixels: List[int] = []
|
|
for byteline in range(64 // 8):
|
|
offset = byteline * 128
|
|
row = layout[offset : offset + 128]
|
|
for bit in range(8):
|
|
pixels.extend(bool(px & (1 << bit)) for px in row)
|
|
|
|
im = Image.new("1", (128, 64))
|
|
im.putdata(pixels[::-1])
|
|
|
|
assert self.t1_screenshot_directory is not None
|
|
img_location = (
|
|
self.t1_screenshot_directory / f"{self.t1_screenshot_counter:04d}.png"
|
|
)
|
|
im.save(img_location)
|
|
self.t1_screenshot_counter += 1
|
|
|
|
|
|
class NullDebugLink(DebugLink):
|
|
def __init__(self) -> None:
|
|
# Ignoring type error as self.transport will not be touched while using NullDebugLink
|
|
super().__init__(None) # type: ignore [Argument of type "None" cannot be assigned to parameter "transport"]
|
|
|
|
def open(self) -> None:
|
|
pass
|
|
|
|
def close(self) -> None:
|
|
pass
|
|
|
|
def _call(
|
|
self, msg: protobuf.MessageType, nowait: bool = False
|
|
) -> Optional[messages.DebugLinkState]:
|
|
if not nowait:
|
|
if isinstance(msg, messages.DebugLinkGetState):
|
|
return messages.DebugLinkState()
|
|
else:
|
|
raise RuntimeError("unexpected call to a fake debuglink")
|
|
|
|
return None
|
|
|
|
|
|
class DebugUI:
|
|
INPUT_FLOW_DONE = object()
|
|
|
|
def __init__(self, debuglink: DebugLink) -> None:
|
|
self.debuglink = debuglink
|
|
self.clear()
|
|
|
|
def clear(self) -> None:
|
|
self.pins: Optional[Iterator[str]] = None
|
|
self.passphrase = ""
|
|
self.input_flow: Union[
|
|
Generator[None, messages.ButtonRequest, None], object, None
|
|
] = None
|
|
|
|
def button_request(self, br: messages.ButtonRequest) -> None:
|
|
self.debuglink.take_t1_screenshot_if_relevant()
|
|
|
|
if self.input_flow is None:
|
|
# Only calling screen-saver when not in input-flow
|
|
# as it collides with wait-layout of input flows.
|
|
# All input flows call debuglink.input(), so
|
|
# recording their screens that way (as well as
|
|
# possible swipes below).
|
|
self.debuglink.save_current_screen_if_relevant(wait=True)
|
|
if br.code == messages.ButtonRequestType.PinEntry:
|
|
self.debuglink.input(self.get_pin())
|
|
else:
|
|
# Paginating (going as further as possible) and pressing Yes
|
|
if br.pages is not None:
|
|
for _ in range(br.pages - 1):
|
|
self.debuglink.swipe_up(wait=True)
|
|
self.debuglink.press_yes()
|
|
elif self.input_flow is self.INPUT_FLOW_DONE:
|
|
raise AssertionError("input flow ended prematurely")
|
|
else:
|
|
try:
|
|
assert isinstance(self.input_flow, Generator)
|
|
self.input_flow.send(br)
|
|
except StopIteration:
|
|
self.input_flow = self.INPUT_FLOW_DONE
|
|
|
|
def get_pin(self, code: Optional["PinMatrixRequestType"] = None) -> str:
|
|
self.debuglink.take_t1_screenshot_if_relevant()
|
|
|
|
if self.pins is None:
|
|
raise RuntimeError("PIN requested but no sequence was configured")
|
|
|
|
try:
|
|
return self.debuglink.encode_pin(next(self.pins))
|
|
except StopIteration:
|
|
raise AssertionError("PIN sequence ended prematurely")
|
|
|
|
def get_passphrase(self, available_on_device: bool) -> str:
|
|
self.debuglink.take_t1_screenshot_if_relevant()
|
|
return self.passphrase
|
|
|
|
|
|
class MessageFilter:
|
|
def __init__(self, message_type: Type[protobuf.MessageType], **fields: Any) -> None:
|
|
self.message_type = message_type
|
|
self.fields: Dict[str, Any] = {}
|
|
self.update_fields(**fields)
|
|
|
|
def update_fields(self, **fields: Any) -> "MessageFilter":
|
|
for name, value in fields.items():
|
|
try:
|
|
self.fields[name] = self.from_message_or_type(value)
|
|
except TypeError:
|
|
self.fields[name] = value
|
|
|
|
return self
|
|
|
|
@classmethod
|
|
def from_message_or_type(
|
|
cls, message_or_type: "ExpectedMessage"
|
|
) -> "MessageFilter":
|
|
if isinstance(message_or_type, cls):
|
|
return message_or_type
|
|
if isinstance(message_or_type, protobuf.MessageType):
|
|
return cls.from_message(message_or_type)
|
|
if isinstance(message_or_type, type) and issubclass(
|
|
message_or_type, protobuf.MessageType
|
|
):
|
|
return cls(message_or_type)
|
|
raise TypeError("Invalid kind of expected response")
|
|
|
|
@classmethod
|
|
def from_message(cls, message: protobuf.MessageType) -> "MessageFilter":
|
|
fields = {}
|
|
for field in message.FIELDS.values():
|
|
value = getattr(message, field.name)
|
|
if value in (None, [], protobuf.REQUIRED_FIELD_PLACEHOLDER):
|
|
continue
|
|
fields[field.name] = value
|
|
return cls(type(message), **fields)
|
|
|
|
def match(self, message: protobuf.MessageType) -> bool:
|
|
if type(message) is not self.message_type:
|
|
return False
|
|
|
|
for field, expected_value in self.fields.items():
|
|
actual_value = getattr(message, field, None)
|
|
if isinstance(expected_value, MessageFilter):
|
|
if actual_value is None or not expected_value.match(actual_value):
|
|
return False
|
|
elif expected_value != actual_value:
|
|
return False
|
|
|
|
return True
|
|
|
|
def to_string(self, maxwidth: int = 80) -> str:
|
|
fields: List[Tuple[str, str]] = []
|
|
for field in self.message_type.FIELDS.values():
|
|
if field.name not in self.fields:
|
|
continue
|
|
value = self.fields[field.name]
|
|
if isinstance(value, IntEnum):
|
|
field_str = value.name
|
|
elif isinstance(value, MessageFilter):
|
|
field_str = value.to_string(maxwidth - 4)
|
|
elif isinstance(value, protobuf.MessageType):
|
|
field_str = protobuf.format_message(value)
|
|
else:
|
|
field_str = repr(value)
|
|
field_str = textwrap.indent(field_str, " ").lstrip()
|
|
fields.append((field.name, field_str))
|
|
|
|
pairs = [f"{k}={v}" for k, v in fields]
|
|
oneline_str = ", ".join(pairs)
|
|
if len(oneline_str) < maxwidth:
|
|
return f"{self.message_type.__name__}({oneline_str})"
|
|
else:
|
|
item: List[str] = []
|
|
item.append(f"{self.message_type.__name__}(")
|
|
for pair in pairs:
|
|
item.append(f" {pair}")
|
|
item.append(")")
|
|
return "\n".join(item)
|
|
|
|
|
|
class MessageFilterGenerator:
|
|
def __getattr__(self, key: str) -> Callable[..., "MessageFilter"]:
|
|
message_type = getattr(messages, key)
|
|
return MessageFilter(message_type).update_fields
|
|
|
|
|
|
message_filters = MessageFilterGenerator()
|
|
|
|
|
|
class TrezorClientDebugLink(TrezorClient):
|
|
# This class implements automatic responses
|
|
# and other functionality for unit tests
|
|
# for various callbacks, created in order
|
|
# to automatically pass unit tests.
|
|
#
|
|
# This mixing should be used only for purposes
|
|
# of unit testing, because it will fail to work
|
|
# without special DebugLink interface provided
|
|
# by the device.
|
|
|
|
def __init__(self, transport: "Transport", auto_interact: bool = True) -> None:
|
|
try:
|
|
debug_transport = transport.find_debug()
|
|
self.debug = DebugLink(debug_transport, auto_interact)
|
|
# try to open debuglink, see if it works
|
|
self.debug.open()
|
|
self.debug.close()
|
|
except Exception:
|
|
if not auto_interact:
|
|
self.debug = NullDebugLink()
|
|
else:
|
|
raise
|
|
|
|
self.reset_debug_features()
|
|
|
|
super().__init__(transport, ui=self.ui)
|
|
|
|
# So that we can choose right screenshotting logic (T1 vs TT)
|
|
# and know the supported debug capabilities
|
|
self.debug.model = self.features.model
|
|
self.debug.version = self.version
|
|
|
|
def reset_debug_features(self) -> None:
|
|
"""Prepare the debugging client for a new testcase.
|
|
|
|
Clears all debugging state that might have been modified by a testcase.
|
|
"""
|
|
self.ui: DebugUI = DebugUI(self.debug)
|
|
self.in_with_statement = False
|
|
self.expected_responses: Optional[List[MessageFilter]] = None
|
|
self.actual_responses: Optional[List[protobuf.MessageType]] = None
|
|
self.filters: Dict[
|
|
Type[protobuf.MessageType],
|
|
Optional[Callable[[protobuf.MessageType], protobuf.MessageType]],
|
|
] = {}
|
|
|
|
def ensure_open(self) -> None:
|
|
"""Only open session if there isn't already an open one."""
|
|
if self.session_counter == 0:
|
|
self.open()
|
|
|
|
def open(self) -> None:
|
|
super().open()
|
|
if self.session_counter == 1:
|
|
self.debug.open()
|
|
|
|
def close(self) -> None:
|
|
if self.session_counter == 1:
|
|
self.debug.close()
|
|
super().close()
|
|
|
|
def set_filter(
|
|
self,
|
|
message_type: Type[protobuf.MessageType],
|
|
callback: Optional[Callable[[protobuf.MessageType], protobuf.MessageType]],
|
|
) -> None:
|
|
"""Configure a filter function for a specified message type.
|
|
|
|
The `callback` must be a function that accepts a protobuf message, and returns
|
|
a (possibly modified) protobuf message of the same type. Whenever a message
|
|
is sent or received that matches `message_type`, `callback` is invoked on the
|
|
message and its result is substituted for the original.
|
|
|
|
Useful for test scenarios with an active malicious actor on the wire.
|
|
"""
|
|
if not self.in_with_statement:
|
|
raise RuntimeError("Must be called inside 'with' statement")
|
|
|
|
self.filters[message_type] = callback
|
|
|
|
def _filter_message(self, msg: protobuf.MessageType) -> protobuf.MessageType:
|
|
message_type = msg.__class__
|
|
callback = self.filters.get(message_type)
|
|
if callable(callback):
|
|
return callback(deepcopy(msg))
|
|
else:
|
|
return msg
|
|
|
|
def set_input_flow(
|
|
self, input_flow: Generator[None, Optional[messages.ButtonRequest], None]
|
|
) -> None:
|
|
"""Configure a sequence of input events for the current with-block.
|
|
|
|
The `input_flow` must be a generator function. A `yield` statement in the
|
|
input flow function waits for a ButtonRequest from the device, and returns
|
|
its code.
|
|
|
|
Example usage:
|
|
|
|
>>> def input_flow():
|
|
>>> # wait for first button prompt
|
|
>>> code = yield
|
|
>>> assert code == ButtonRequestType.Other
|
|
>>> # press No
|
|
>>> client.debug.press_no()
|
|
>>>
|
|
>>> # wait for second button prompt
|
|
>>> yield
|
|
>>> # press Yes
|
|
>>> client.debug.press_yes()
|
|
>>>
|
|
>>> with client:
|
|
>>> client.set_input_flow(input_flow)
|
|
>>> some_call(client)
|
|
"""
|
|
if not self.in_with_statement:
|
|
raise RuntimeError("Must be called inside 'with' statement")
|
|
|
|
if callable(input_flow):
|
|
input_flow = input_flow()
|
|
if not hasattr(input_flow, "send"):
|
|
raise RuntimeError("input_flow should be a generator function")
|
|
self.ui.input_flow = input_flow
|
|
input_flow.send(None) # start the generator
|
|
|
|
def watch_layout(self, watch: bool = True) -> None:
|
|
"""Enable or disable watching layout changes.
|
|
|
|
Since trezor-core v2.3.2, it is necessary to call `watch_layout()` before
|
|
using `debug.wait_layout()`, otherwise layout changes are not reported.
|
|
"""
|
|
if self.version >= (2, 3, 2):
|
|
# version check is necessary because otherwise we cannot reliably detect
|
|
# whether and where to wait for reply:
|
|
# - T1 reports unknown debuglink messages on the wirelink
|
|
# - TT < 2.3.0 does not reply to unknown debuglink messages due to a bug
|
|
self.debug.watch_layout(watch)
|
|
|
|
def __enter__(self) -> "TrezorClientDebugLink":
|
|
# For usage in with/expected_responses
|
|
if self.in_with_statement:
|
|
raise RuntimeError("Do not nest!")
|
|
self.in_with_statement = True
|
|
return self
|
|
|
|
def __exit__(self, exc_type: Any, value: Any, traceback: Any) -> None:
|
|
__tracebackhide__ = True # for pytest # pylint: disable=W0612
|
|
|
|
# copy expected/actual responses before clearing them
|
|
expected_responses = self.expected_responses
|
|
actual_responses = self.actual_responses
|
|
self.reset_debug_features()
|
|
|
|
if exc_type is None:
|
|
# If no other exception was raised, evaluate missed responses
|
|
# (raises AssertionError on mismatch)
|
|
self._verify_responses(expected_responses, actual_responses)
|
|
|
|
def set_expected_responses(
|
|
self, expected: List[Union["ExpectedMessage", Tuple[bool, "ExpectedMessage"]]]
|
|
) -> None:
|
|
"""Set a sequence of expected responses to client calls.
|
|
|
|
Within a given with-block, the list of received responses from device must
|
|
match the list of expected responses, otherwise an AssertionError is raised.
|
|
|
|
If an expected response is given a field value other than None, that field value
|
|
must exactly match the received field value. If a given field is None
|
|
(or unspecified) in the expected response, the received field value is not
|
|
checked.
|
|
|
|
Each expected response can also be a tuple (bool, message). In that case, the
|
|
expected response is only evaluated if the first field is True.
|
|
This is useful for differentiating sequences between Trezor models:
|
|
|
|
>>> trezor_one = client.features.model == "1"
|
|
>>> client.set_expected_responses([
|
|
>>> messages.ButtonRequest(code=ConfirmOutput),
|
|
>>> (trezor_one, messages.ButtonRequest(code=ConfirmOutput)),
|
|
>>> messages.Success(),
|
|
>>> ])
|
|
"""
|
|
if not self.in_with_statement:
|
|
raise RuntimeError("Must be called inside 'with' statement")
|
|
|
|
# make sure all items are (bool, message) tuples
|
|
expected_with_validity = (
|
|
e if isinstance(e, tuple) else (True, e) for e in expected
|
|
)
|
|
|
|
# only apply those items that are (True, message)
|
|
self.expected_responses = [
|
|
MessageFilter.from_message_or_type(expected)
|
|
for valid, expected in expected_with_validity
|
|
if valid
|
|
]
|
|
self.actual_responses = []
|
|
|
|
def use_pin_sequence(self, pins: Iterable[str]) -> None:
|
|
"""Respond to PIN prompts from device with the provided PINs.
|
|
The sequence must be at least as long as the expected number of PIN prompts.
|
|
"""
|
|
self.ui.pins = iter(pins)
|
|
|
|
def use_passphrase(self, passphrase: str) -> None:
|
|
"""Respond to passphrase prompts from device with the provided passphrase."""
|
|
self.ui.passphrase = Mnemonic.normalize_string(passphrase)
|
|
|
|
def use_mnemonic(self, mnemonic: str) -> None:
|
|
"""Use the provided mnemonic to respond to device.
|
|
Only applies to T1, where device prompts the host for mnemonic words."""
|
|
self.mnemonic = Mnemonic.normalize_string(mnemonic).split(" ")
|
|
|
|
def _raw_read(self) -> protobuf.MessageType:
|
|
__tracebackhide__ = True # for pytest # pylint: disable=W0612
|
|
|
|
resp = super()._raw_read()
|
|
resp = self._filter_message(resp)
|
|
if self.actual_responses is not None:
|
|
self.actual_responses.append(resp)
|
|
return resp
|
|
|
|
def _raw_write(self, msg: protobuf.MessageType) -> None:
|
|
return super()._raw_write(self._filter_message(msg))
|
|
|
|
@staticmethod
|
|
def _expectation_lines(expected: List[MessageFilter], current: int) -> List[str]:
|
|
start_at = max(current - EXPECTED_RESPONSES_CONTEXT_LINES, 0)
|
|
stop_at = min(current + EXPECTED_RESPONSES_CONTEXT_LINES + 1, len(expected))
|
|
output: List[str] = []
|
|
output.append("Expected responses:")
|
|
if start_at > 0:
|
|
output.append(f" (...{start_at} previous responses omitted)")
|
|
for i in range(start_at, stop_at):
|
|
exp = expected[i]
|
|
prefix = " " if i != current else ">>> "
|
|
output.append(textwrap.indent(exp.to_string(), prefix))
|
|
if stop_at < len(expected):
|
|
omitted = len(expected) - stop_at
|
|
output.append(f" (...{omitted} following responses omitted)")
|
|
|
|
output.append("")
|
|
return output
|
|
|
|
@classmethod
|
|
def _verify_responses(
|
|
cls,
|
|
expected: Optional[List[MessageFilter]],
|
|
actual: Optional[List[protobuf.MessageType]],
|
|
) -> None:
|
|
__tracebackhide__ = True # for pytest # pylint: disable=W0612
|
|
|
|
if expected is None and actual is None:
|
|
return
|
|
|
|
assert expected is not None
|
|
assert actual is not None
|
|
|
|
for i, (exp, act) in enumerate(zip_longest(expected, actual)):
|
|
if exp is None:
|
|
output = cls._expectation_lines(expected, i)
|
|
output.append("No more messages were expected, but we got:")
|
|
for resp in actual[i:]:
|
|
output.append(
|
|
textwrap.indent(protobuf.format_message(resp), " ")
|
|
)
|
|
raise AssertionError("\n".join(output))
|
|
|
|
if act is None:
|
|
output = cls._expectation_lines(expected, i)
|
|
output.append("This and the following message was not received.")
|
|
raise AssertionError("\n".join(output))
|
|
|
|
if not exp.match(act):
|
|
output = cls._expectation_lines(expected, i)
|
|
output.append("Actually received:")
|
|
output.append(textwrap.indent(protobuf.format_message(act), " "))
|
|
raise AssertionError("\n".join(output))
|
|
|
|
def mnemonic_callback(self, _) -> str:
|
|
word, pos = self.debug.read_recovery_word()
|
|
if word:
|
|
return word
|
|
if pos:
|
|
return self.mnemonic[pos - 1]
|
|
|
|
raise RuntimeError("Unexpected call")
|
|
|
|
|
|
@expect(messages.Success, field="message", ret_type=str)
|
|
def load_device(
|
|
client: "TrezorClient",
|
|
mnemonic: Union[str, Iterable[str]],
|
|
pin: Optional[str],
|
|
passphrase_protection: bool,
|
|
label: Optional[str],
|
|
skip_checksum: bool = False,
|
|
needs_backup: bool = False,
|
|
no_backup: bool = False,
|
|
) -> protobuf.MessageType:
|
|
if isinstance(mnemonic, str):
|
|
mnemonic = [mnemonic]
|
|
|
|
mnemonics = [Mnemonic.normalize_string(m) for m in mnemonic]
|
|
|
|
if client.features.initialized:
|
|
raise RuntimeError(
|
|
"Device is initialized already. Call device.wipe() and try again."
|
|
)
|
|
|
|
resp = client.call(
|
|
messages.LoadDevice(
|
|
mnemonics=mnemonics,
|
|
pin=pin,
|
|
passphrase_protection=passphrase_protection,
|
|
label=label,
|
|
skip_checksum=skip_checksum,
|
|
needs_backup=needs_backup,
|
|
no_backup=no_backup,
|
|
)
|
|
)
|
|
client.init_device()
|
|
return resp
|
|
|
|
|
|
# keep the old name for compatibility
|
|
load_device_by_mnemonic = load_device
|
|
|
|
|
|
@expect(messages.Success, field="message", ret_type=str)
|
|
def prodtest_t1(client: "TrezorClient") -> protobuf.MessageType:
|
|
if client.features.bootloader_mode is not True:
|
|
raise RuntimeError("Device must be in bootloader mode")
|
|
|
|
return client.call(
|
|
messages.ProdTestT1(
|
|
payload=b"\x00\xFF\x55\xAA\x66\x99\x33\xCCABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!\x00\xFF\x55\xAA\x66\x99\x33\xCC"
|
|
)
|
|
)
|
|
|
|
|
|
def record_screen(
|
|
debug_client: "TrezorClientDebugLink",
|
|
directory: Union[str, None],
|
|
report_func: Union[Callable[[str], None], None] = None,
|
|
) -> None:
|
|
"""Record screen changes into a specified directory.
|
|
|
|
Passing `None` as `directory` stops the recording.
|
|
|
|
Creates subdirectories inside a specified directory, one for each session
|
|
(for each new call of this function).
|
|
(So that older screenshots are not overwritten by new ones.)
|
|
|
|
Is available only for emulators, hardware devices are not capable of that.
|
|
"""
|
|
|
|
def get_session_screenshot_dir(directory: Path) -> Path:
|
|
"""Create and return screenshot dir for the current session, according to datetime."""
|
|
session_dir = directory / datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
|
|
session_dir.mkdir(parents=True, exist_ok=True)
|
|
return session_dir
|
|
|
|
if not _is_emulator(debug_client):
|
|
raise RuntimeError("Recording is only supported on emulator.")
|
|
|
|
if directory is None:
|
|
debug_client.debug.stop_recording()
|
|
if report_func is not None:
|
|
report_func("Recording stopped.")
|
|
else:
|
|
# Transforming the directory into an absolute path,
|
|
# because emulator demands it
|
|
abs_directory = Path(directory).resolve()
|
|
# Creating the dir when it does not exist yet
|
|
if not abs_directory.exists():
|
|
abs_directory.mkdir(parents=True, exist_ok=True)
|
|
# Getting a new screenshot dir for the current session
|
|
current_session_dir = get_session_screenshot_dir(abs_directory)
|
|
debug_client.debug.start_recording(str(current_session_dir))
|
|
if report_func is not None:
|
|
report_func(f"Recording started into {current_session_dir}.")
|
|
|
|
|
|
def _is_emulator(debug_client: "TrezorClientDebugLink") -> bool:
|
|
"""Check if we are connected to emulator, in contrast to hardware device."""
|
|
return debug_client.features.fw_vendor == "EMULATOR"
|