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https://github.com/trezor/trezor-firmware.git
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72 lines
2.6 KiB
Python
72 lines
2.6 KiB
Python
from ubinascii import hexlify
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from trezor import ui
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from trezor.messages import ButtonRequestType
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from trezor.ui.text import Text
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from trezor.utils import chunks, format_amount
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from apps.common.confirm import require_confirm, require_hold_to_confirm
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from apps.common.layout import split_address
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from apps.ethereum import networks, tokens
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from apps.ethereum.address import address_from_bytes
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async def require_confirm_tx(ctx, to_bytes, value, chain_id, token=None, tx_type=None):
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if to_bytes:
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to_str = address_from_bytes(to_bytes, networks.by_chain_id(chain_id))
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else:
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to_str = "new contract?"
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text = Text("Confirm sending", ui.ICON_SEND, ui.GREEN, new_lines=False)
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text.bold(format_ethereum_amount(value, token, chain_id, tx_type))
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text.normal(ui.GREY, "to", ui.FG)
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for to_line in split_address(to_str):
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text.br()
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text.mono(to_line)
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# we use SignTx, not ConfirmOutput, for compatibility with T1
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await require_confirm(ctx, text, ButtonRequestType.SignTx)
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async def require_confirm_fee(
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ctx, spending, gas_price, gas_limit, chain_id, token=None, tx_type=None
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):
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text = Text("Confirm transaction", ui.ICON_SEND, ui.GREEN, new_lines=False)
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text.bold(format_ethereum_amount(spending, token, chain_id, tx_type))
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text.normal(ui.GREY, "Gas price:", ui.FG)
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text.bold(format_ethereum_amount(gas_price, None, chain_id, tx_type))
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text.normal(ui.GREY, "Maximum fee:", ui.FG)
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text.bold(format_ethereum_amount(gas_price * gas_limit, None, chain_id, tx_type))
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await require_hold_to_confirm(ctx, text, ButtonRequestType.SignTx)
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def split_data(data):
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return chunks(data, 18)
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async def require_confirm_data(ctx, data, data_total):
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data_str = hexlify(data[:36]).decode()
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if data_total > 36:
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data_str = data_str[:-2] + ".."
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text = Text("Confirm data", ui.ICON_SEND, ui.GREEN)
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text.bold("Size: %d bytes" % data_total)
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text.mono(*split_data(data_str))
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# we use SignTx, not ConfirmOutput, for compatibility with T1
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await require_confirm(ctx, text, ButtonRequestType.SignTx)
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def format_ethereum_amount(value: int, token, chain_id: int, tx_type=None):
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if token:
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if token is tokens.UNKNOWN_TOKEN:
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return "Unknown token value"
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suffix = token[2]
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decimals = token[3]
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else:
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suffix = networks.shortcut_by_chain_id(chain_id, tx_type)
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decimals = 18
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# Don't want to display wei values for tokens with small decimal numbers
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if decimals > 9 and value < 10 ** (decimals - 9):
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suffix = "Wei " + suffix
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decimals = 0
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return "%s %s" % (format_amount(value, decimals), suffix)
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