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Code Issues Releases Wiki Activity

core/bitcoin: Support preauthorization in @with_keychain decorator.

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This commit is contained in:
Andrew Kozlik 2020-07-23 17:04:05 +02:00 committed by Andrew Kozlik
parent 208283e13e
commit c772de9d3c
1 changed files with 22 additions and 8 deletions
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30
core/src/apps/bitcoin/keychain.py
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@ -12,6 +12,8 @@ if False:
from apps.common.keychain import Keychain, MsgOut, Handler
from .authorization import CoinJoinAuthorization
class MsgWithCoinName(MessageType, Protocol):
coin_name = ... # type: Optional[str]
@ -57,17 +59,20 @@ def get_namespaces_for_coin(coin: coininfo.CoinInfo):
return namespaces
async def get_keychain_for_coin(
ctx: wire.Context, coin_name: Optional[str]
) -> Tuple[Keychain, coininfo.CoinInfo]:
def get_coin_by_name(coin_name: Optional[str]) -> coininfo.CoinInfo:
if coin_name is None:
coin_name = "Bitcoin"
try:
coin = coininfo.by_name(coin_name)
return coininfo.by_name(coin_name)
except ValueError:
raise wire.DataError("Unsupported coin type")
async def get_keychain_for_coin(
ctx: wire.Context, coin_name: Optional[str]
) -> Tuple[Keychain, coininfo.CoinInfo]:
coin = get_coin_by_name(coin_name)
namespaces = get_namespaces_for_coin(coin)
slip21_namespaces = [[b"SLIP-0019"]]
keychain = await get_keychain(ctx, coin.curve_name, namespaces, slip21_namespaces)
@ -75,9 +80,18 @@ async def get_keychain_for_coin(
def with_keychain(func: HandlerWithCoinInfo[MsgIn, MsgOut]) -> Handler[MsgIn, MsgOut]:
async def wrapper(ctx: wire.Context, msg: MsgIn) -> MsgOut:
keychain, coin = await get_keychain_for_coin(ctx, msg.coin_name)
with keychain:
return await func(ctx, msg, keychain, coin)
async def wrapper(
ctx: wire.Context,
msg: MsgIn,
authorization: Optional[CoinJoinAuthorization] = None,
) -> MsgOut:
if authorization:
keychain = authorization.keychain
coin = get_coin_by_name(msg.coin_name)
return await func(ctx, msg, keychain, coin, authorization)
else:
keychain, coin = await get_keychain_for_coin(ctx, msg.coin_name)
with keychain:
return await func(ctx, msg, keychain, coin)
return wrapper