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https://github.com/trezor/trezor-firmware.git
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93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2019 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 typing import List
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from . import messages, tools
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from .tools import expect, session
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REQUIRED_FIELDS_TRANSACTION = ("inputs", "outputs", "transactions")
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REQUIRED_FIELDS_INPUT = ("path", "prev_hash", "prev_index", "type")
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@expect(messages.CardanoAddress, field="address")
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def get_address(client, address_n, show_display=False):
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return client.call(
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messages.CardanoGetAddress(address_n=address_n, show_display=show_display)
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)
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@expect(messages.CardanoPublicKey)
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def get_public_key(client, address_n):
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return client.call(messages.CardanoGetPublicKey(address_n=address_n))
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@session
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def sign_tx(
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client,
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inputs: List[messages.CardanoTxInputType],
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outputs: List[messages.CardanoTxOutputType],
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transactions: List[bytes],
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protocol_magic,
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):
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response = client.call(
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messages.CardanoSignTx(
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inputs=inputs,
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outputs=outputs,
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transactions_count=len(transactions),
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protocol_magic=protocol_magic,
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)
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)
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while isinstance(response, messages.CardanoTxRequest):
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tx_index = response.tx_index
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transaction_data = bytes.fromhex(transactions[tx_index])
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ack_message = messages.CardanoTxAck(transaction=transaction_data)
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response = client.call(ack_message)
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return response
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def create_input(input) -> messages.CardanoTxInputType:
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if not all(input.get(k) is not None for k in REQUIRED_FIELDS_INPUT):
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raise ValueError("The input is missing some fields")
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path = input["path"]
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return messages.CardanoTxInputType(
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address_n=tools.parse_path(path),
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prev_hash=bytes.fromhex(input["prev_hash"]),
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prev_index=input["prev_index"],
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type=input["type"],
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)
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def create_output(output) -> messages.CardanoTxOutputType:
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if not output.get("amount") or not (output.get("address") or output.get("path")):
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raise ValueError("The output is missing some fields")
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if output.get("path"):
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path = output["path"]
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return messages.CardanoTxOutputType(
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address_n=tools.parse_path(path), amount=int(output["amount"])
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)
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return messages.CardanoTxOutputType(
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address=output["address"], amount=int(output["amount"])
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)
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