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124 lines
5.1 KiB
124 lines
5.1 KiB
from trezor.crypto.hashlib import sha256
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from trezor.messages import EosTxActionAck, EosTxActionRequest
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from trezor.utils import HashWriter
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from .. import helpers, writers
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from . import layout
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if False:
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from trezor import wire
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from trezor.utils import Writer
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async def process_action(
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ctx: wire.Context, sha: HashWriter, action: EosTxActionAck
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) -> None:
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name = helpers.eos_name_to_string(action.common.name)
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account = helpers.eos_name_to_string(action.common.account)
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if not check_action(action, name, account):
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raise ValueError("Invalid action")
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w = bytearray()
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if account == "eosio":
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if name == "buyram":
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await layout.confirm_action_buyram(ctx, action.buy_ram)
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writers.write_action_buyram(w, action.buy_ram)
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elif name == "buyrambytes":
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await layout.confirm_action_buyrambytes(ctx, action.buy_ram_bytes)
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writers.write_action_buyrambytes(w, action.buy_ram_bytes)
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elif name == "sellram":
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await layout.confirm_action_sellram(ctx, action.sell_ram)
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writers.write_action_sellram(w, action.sell_ram)
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elif name == "delegatebw":
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await layout.confirm_action_delegate(ctx, action.delegate)
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writers.write_action_delegate(w, action.delegate)
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elif name == "undelegatebw":
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await layout.confirm_action_undelegate(ctx, action.undelegate)
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writers.write_action_undelegate(w, action.undelegate)
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elif name == "refund":
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await layout.confirm_action_refund(ctx, action.refund)
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writers.write_action_refund(w, action.refund)
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elif name == "voteproducer":
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await layout.confirm_action_voteproducer(ctx, action.vote_producer)
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writers.write_action_voteproducer(w, action.vote_producer)
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elif name == "updateauth":
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await layout.confirm_action_updateauth(ctx, action.update_auth)
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writers.write_action_updateauth(w, action.update_auth)
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elif name == "deleteauth":
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await layout.confirm_action_deleteauth(ctx, action.delete_auth)
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writers.write_action_deleteauth(w, action.delete_auth)
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elif name == "linkauth":
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await layout.confirm_action_linkauth(ctx, action.link_auth)
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writers.write_action_linkauth(w, action.link_auth)
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elif name == "unlinkauth":
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await layout.confirm_action_unlinkauth(ctx, action.unlink_auth)
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writers.write_action_unlinkauth(w, action.unlink_auth)
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elif name == "newaccount":
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await layout.confirm_action_newaccount(ctx, action.new_account)
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writers.write_action_newaccount(w, action.new_account)
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else:
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raise ValueError("Unrecognized action type for eosio")
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elif name == "transfer":
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await layout.confirm_action_transfer(ctx, action.transfer, account)
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writers.write_action_transfer(w, action.transfer)
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else:
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await process_unknown_action(ctx, w, action)
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writers.write_action_common(sha, action.common)
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writers.write_bytes_prefixed(sha, w)
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async def process_unknown_action(
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ctx: wire.Context, w: Writer, action: EosTxActionAck
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) -> None:
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checksum = HashWriter(sha256())
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writers.write_uvarint(checksum, action.unknown.data_size)
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checksum.extend(action.unknown.data_chunk)
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writers.write_bytes_unchecked(w, action.unknown.data_chunk)
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bytes_left = action.unknown.data_size - len(action.unknown.data_chunk)
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while bytes_left != 0:
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action = await ctx.call(
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EosTxActionRequest(data_size=bytes_left), EosTxActionAck
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)
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if action.unknown is None:
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raise ValueError("Bad response. Unknown struct expected.")
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checksum.extend(action.unknown.data_chunk)
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writers.write_bytes_unchecked(w, action.unknown.data_chunk)
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bytes_left -= len(action.unknown.data_chunk)
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if bytes_left < 0:
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raise ValueError("Bad response. Buffer overflow.")
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await layout.confirm_action_unknown(ctx, action.common, checksum.get_digest())
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def check_action(action: EosTxActionAck, name: str, account: str) -> bool:
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if account == "eosio":
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return (
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(name == "buyram" and action.buy_ram is not None)
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or (name == "buyrambytes" and action.buy_ram_bytes is not None)
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or (name == "sellram" and action.sell_ram is not None)
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or (name == "delegatebw" and action.delegate is not None)
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or (name == "undelegatebw" and action.undelegate is not None)
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or (name == "refund" and action.refund is not None)
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or (name == "voteproducer" and action.vote_producer is not None)
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or (name == "updateauth" and action.update_auth is not None)
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or (name == "deleteauth" and action.delete_auth is not None)
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or (name == "linkauth" and action.link_auth is not None)
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or (name == "unlinkauth" and action.unlink_auth is not None)
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or (name == "newaccount" and action.new_account is not None)
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)
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elif name == "transfer":
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return action.transfer is not None
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elif action.unknown is not None:
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return True
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return False
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