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273 lines
8.7 KiB
273 lines
8.7 KiB
import gc
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from trezor.messages import FailureType, InputScriptType, OutputScriptType
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from trezor.messages.RequestType import (
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TXEXTRADATA,
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TXFINISHED,
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TXINPUT,
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TXMETA,
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TXOUTPUT,
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)
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from trezor.messages.SignTx import SignTx
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from trezor.messages.TransactionType import TransactionType
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from trezor.messages.TxInputType import TxInputType
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from trezor.messages.TxOutputBinType import TxOutputBinType
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from trezor.messages.TxOutputType import TxOutputType
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from trezor.messages.TxRequest import TxRequest
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from trezor.utils import obj_eq
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from .signing import SigningError
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from apps.common.coininfo import CoinInfo
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CHANGE_OUTPUT_TO_INPUT_SCRIPT_TYPES = {
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OutputScriptType.PAYTOADDRESS: InputScriptType.SPENDADDRESS,
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OutputScriptType.PAYTOMULTISIG: InputScriptType.SPENDMULTISIG,
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OutputScriptType.PAYTOWITNESS: InputScriptType.SPENDWITNESS,
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OutputScriptType.PAYTOP2SHWITNESS: InputScriptType.SPENDP2SHWITNESS,
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}
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CHANGE_INPUT_SCRIPT_TYPES = tuple(CHANGE_OUTPUT_TO_INPUT_SCRIPT_TYPES.values())
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CHANGE_OUTPUT_SCRIPT_TYPES = tuple(CHANGE_OUTPUT_TO_INPUT_SCRIPT_TYPES.keys())
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MULTISIG_INPUT_SCRIPT_TYPES = (
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InputScriptType.SPENDMULTISIG,
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InputScriptType.SPENDP2SHWITNESS,
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InputScriptType.SPENDWITNESS,
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)
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MULTISIG_OUTPUT_SCRIPT_TYPES = (
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OutputScriptType.PAYTOMULTISIG,
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OutputScriptType.PAYTOP2SHWITNESS,
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OutputScriptType.PAYTOWITNESS,
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)
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# Machine instructions
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# ===
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class UiConfirmOutput:
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def __init__(self, output: TxOutputType, coin: CoinInfo):
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self.output = output
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self.coin = coin
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__eq__ = obj_eq
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class UiConfirmTotal:
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def __init__(self, spending: int, fee: int, coin: CoinInfo):
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self.spending = spending
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self.fee = fee
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self.coin = coin
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__eq__ = obj_eq
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class UiConfirmFeeOverThreshold:
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def __init__(self, fee: int, coin: CoinInfo):
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self.fee = fee
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self.coin = coin
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__eq__ = obj_eq
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class UiConfirmForeignAddress:
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def __init__(self, address_n: list):
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self.address_n = address_n
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__eq__ = obj_eq
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class UiConfirmNonDefaultLocktime:
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def __init__(self, lock_time: int):
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self.lock_time = lock_time
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__eq__ = obj_eq
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def confirm_output(output: TxOutputType, coin: CoinInfo):
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return (yield UiConfirmOutput(output, coin))
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def confirm_total(spending: int, fee: int, coin: CoinInfo):
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return (yield UiConfirmTotal(spending, fee, coin))
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def confirm_feeoverthreshold(fee: int, coin: CoinInfo):
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return (yield UiConfirmFeeOverThreshold(fee, coin))
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def confirm_foreign_address(address_n: list):
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return (yield UiConfirmForeignAddress(address_n))
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def confirm_nondefault_locktime(lock_time: int):
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return (yield UiConfirmNonDefaultLocktime(lock_time))
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def request_tx_meta(tx_req: TxRequest, coin: CoinInfo, tx_hash: bytes = None):
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tx_req.request_type = TXMETA
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tx_req.details.tx_hash = tx_hash
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tx_req.details.request_index = None
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ack = yield tx_req
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tx_req.serialized = None
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gc.collect()
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return sanitize_tx_meta(ack.tx, coin)
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def request_tx_extra_data(
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tx_req: TxRequest, offset: int, size: int, tx_hash: bytes = None
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):
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tx_req.request_type = TXEXTRADATA
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tx_req.details.extra_data_offset = offset
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tx_req.details.extra_data_len = size
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tx_req.details.tx_hash = tx_hash
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tx_req.details.request_index = None
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ack = yield tx_req
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tx_req.serialized = None
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tx_req.details.extra_data_offset = None
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tx_req.details.extra_data_len = None
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gc.collect()
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return ack.tx.extra_data
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def request_tx_input(tx_req: TxRequest, i: int, coin: CoinInfo, tx_hash: bytes = None):
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tx_req.request_type = TXINPUT
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tx_req.details.request_index = i
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tx_req.details.tx_hash = tx_hash
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ack = yield tx_req
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tx_req.serialized = None
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gc.collect()
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return sanitize_tx_input(ack.tx, coin)
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def request_tx_output(tx_req: TxRequest, i: int, coin: CoinInfo, tx_hash: bytes = None):
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tx_req.request_type = TXOUTPUT
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tx_req.details.request_index = i
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tx_req.details.tx_hash = tx_hash
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ack = yield tx_req
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tx_req.serialized = None
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gc.collect()
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if tx_hash is None:
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return sanitize_tx_output(ack.tx, coin)
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else:
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return sanitize_tx_binoutput(ack.tx, coin)
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def request_tx_finish(tx_req: TxRequest):
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tx_req.request_type = TXFINISHED
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tx_req.details = None
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yield tx_req
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tx_req.serialized = None
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gc.collect()
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# Data sanitizers
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# ===
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def sanitize_sign_tx(tx: SignTx, coin: CoinInfo) -> SignTx:
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tx.version = tx.version if tx.version is not None else 1
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tx.lock_time = tx.lock_time if tx.lock_time is not None else 0
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tx.inputs_count = tx.inputs_count if tx.inputs_count is not None else 0
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tx.outputs_count = tx.outputs_count if tx.outputs_count is not None else 0
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tx.coin_name = tx.coin_name if tx.coin_name is not None else "Bitcoin"
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if coin.decred or coin.overwintered:
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tx.expiry = tx.expiry if tx.expiry is not None else 0
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elif tx.expiry:
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raise SigningError(FailureType.DataError, "Expiry not enabled on this coin.")
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if coin.timestamp:
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tx.timestamp = tx.timestamp if tx.timestamp is not None else 0
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elif tx.timestamp:
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raise SigningError(FailureType.DataError, "Timestamp not enabled on this coin.")
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return tx
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def sanitize_tx_meta(tx: TransactionType, coin: CoinInfo) -> TransactionType:
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tx.version = tx.version if tx.version is not None else 1
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tx.lock_time = tx.lock_time if tx.lock_time is not None else 0
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tx.inputs_cnt = tx.inputs_cnt if tx.inputs_cnt is not None else 0
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tx.outputs_cnt = tx.outputs_cnt if tx.outputs_cnt is not None else 0
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if coin.extra_data:
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tx.extra_data_len = tx.extra_data_len if tx.extra_data_len is not None else 0
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elif tx.extra_data_len:
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raise SigningError(
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FailureType.DataError, "Extra data not enabled on this coin."
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)
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if coin.decred or coin.overwintered:
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tx.expiry = tx.expiry if tx.expiry is not None else 0
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elif tx.expiry:
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raise SigningError(FailureType.DataError, "Expiry not enabled on this coin.")
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if coin.timestamp:
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tx.timestamp = tx.timestamp if tx.timestamp is not None else 0
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elif tx.timestamp:
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raise SigningError(FailureType.DataError, "Timestamp not enabled on this coin.")
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return tx
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def sanitize_tx_input(tx: TransactionType, coin: CoinInfo) -> TxInputType:
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txi = tx.inputs[0]
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if txi.script_type is None:
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txi.script_type = InputScriptType.SPENDADDRESS
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if txi.sequence is None:
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txi.sequence = 0xFFFFFFFF
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if txi.multisig and txi.script_type not in MULTISIG_INPUT_SCRIPT_TYPES:
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raise SigningError(
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FailureType.DataError, "Multisig field provided but not expected.",
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)
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if txi.address_n and txi.script_type not in CHANGE_INPUT_SCRIPT_TYPES:
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raise SigningError(
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FailureType.DataError, "Input's address_n provided but not expected.",
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)
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if (txi.decred_script_version or txi.decred_script_version) and not coin.decred:
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raise SigningError(
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FailureType.DataError,
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"Decred details provided but Decred coin not specified.",
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)
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return txi
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def sanitize_tx_output(tx: TransactionType, coin: CoinInfo) -> TxOutputType:
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txo = tx.outputs[0]
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if txo.multisig and txo.script_type not in MULTISIG_OUTPUT_SCRIPT_TYPES:
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raise SigningError(
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FailureType.DataError, "Multisig field provided but not expected.",
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)
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if txo.address_n and txo.script_type not in CHANGE_OUTPUT_SCRIPT_TYPES:
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raise SigningError(
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FailureType.DataError, "Output's address_n provided but not expected.",
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)
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if txo.script_type == OutputScriptType.PAYTOOPRETURN:
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# op_return output
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if txo.amount != 0:
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raise SigningError(
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FailureType.DataError, "OP_RETURN output with non-zero amount"
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)
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if txo.address or txo.address_n or txo.multisig:
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raise SigningError(
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FailureType.DataError, "OP_RETURN output with address or multisig"
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)
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else:
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if txo.op_return_data:
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raise SigningError(
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FailureType.DataError,
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"OP RETURN data provided but not OP RETURN script type.",
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)
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if txo.address_n and txo.address:
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raise SigningError(
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FailureType.DataError, "Both address and address_n provided."
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)
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if not txo.address_n and not txo.address:
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raise SigningError(FailureType.DataError, "Missing address")
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return txo
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def sanitize_tx_binoutput(tx: TransactionType, coin: CoinInfo) -> TxOutputBinType:
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txo_bin = tx.bin_outputs[0]
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if txo_bin.decred_script_version and not coin.decred:
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raise SigningError(
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FailureType.DataError,
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"Decred details provided but Decred coin not specified.",
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)
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return txo_bin
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