AaronFiore/electrum
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util: check bip21 url for amount

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bitromortac
2021-04-28 08:09:01 +02:00
parent 5dcafaf082
commit 6ce96306ca
1 changed files with 3 additions and 1 deletions
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4
electrum/util.py
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@@ -872,7 +872,7 @@ class InvalidBitcoinURI(Exception): pass
def parse_URI(uri: str, on_pr: Callable = None, *, loop=None) -> dict: def parse_URI(uri: str, on_pr: Callable = None, *, loop=None) -> dict:
"""Raises InvalidBitcoinURI on malformed URI.""" """Raises InvalidBitcoinURI on malformed URI."""
from . import bitcoin from . import bitcoin
from .bitcoin import COIN from .bitcoin import COIN, TOTAL_COIN_SUPPLY_LIMIT_IN_BTC
if not isinstance(uri, str): if not isinstance(uri, str):
raise InvalidBitcoinURI(f"expected string, not {repr(uri)}") raise InvalidBitcoinURI(f"expected string, not {repr(uri)}")
@@ -912,6 +912,8 @@ def parse_URI(uri: str, on_pr: Callable = None, *, loop=None) -> dict:
amount = Decimal(m.group(1)) * pow(Decimal(10), k) amount = Decimal(m.group(1)) * pow(Decimal(10), k)
else: else:
amount = Decimal(am) * COIN amount = Decimal(am) * COIN
if amount > TOTAL_COIN_SUPPLY_LIMIT_IN_BTC * COIN:
raise InvalidBitcoinURI(f"amount is out-of-bounds: {amount!r} BTC")
out['amount'] = int(amount) out['amount'] = int(amount)
except Exception as e: except Exception as e:
raise InvalidBitcoinURI(f"failed to parse 'amount' field: {repr(e)}") from e raise InvalidBitcoinURI(f"failed to parse 'amount' field: {repr(e)}") from e