AaronFiore/electrum
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pi: fix incorrectly parsing emaillike with 'ln' prefix

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Fixes a bug where we incorrectly parsed emaillike payment identifiers as
bech32 lightning payment identifier if they start with a 'ln' prefix.
This commit is contained in:
f321x
2025-12-21 16:18:09 +01:00
parent 81a288a1f9
commit 2cd1de4f21
2 changed files with 74 additions and 56 deletions
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31
electrum/payment_identifier.py
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@@ -21,6 +21,7 @@ from .bitcoin import opcodes, construct_script
from .lnaddr import LnInvoiceException
from .lnutil import IncompatibleOrInsaneFeatures
from .bip21 import parse_bip21_URI, InvalidBitcoinURI, LIGHTNING_URI_SCHEME, BITCOIN_BIP21_URI_SCHEME
from .segwit_addr import bech32_decode
from . import paymentrequest
if TYPE_CHECKING:
@@ -28,23 +29,21 @@ if TYPE_CHECKING:
from .transaction import Transaction
def maybe_extract_lightning_payment_identifier(data: str) -> Optional[str]:
data = data.strip() # whitespaces
data = data.lower()
if data.startswith(LIGHTNING_URI_SCHEME + ':ln'):
cut_prefix = LIGHTNING_URI_SCHEME + ':'
data = data[len(cut_prefix):]
if data.startswith('ln'):
return data
return None
def maybe_extract_bech32_lightning_payment_identifier(data: str) -> Optional[str]:
data = remove_uri_prefix(data, prefix=LIGHTNING_URI_SCHEME)
if not data.startswith('ln'):
return None
decoded_bech32 = bech32_decode(data, ignore_long_length=True)
if not decoded_bech32.hrp or not decoded_bech32.data:
return None
return data
def is_uri(data: str) -> bool:
data = data.lower()
if (data.startswith(LIGHTNING_URI_SCHEME + ":") or
data.startswith(BITCOIN_BIP21_URI_SCHEME + ':')):
return True
return False
def remove_uri_prefix(data: str, *, prefix: str) -> str:
assert isinstance(data, str) and isinstance(prefix, str)
data = data.lower().strip()
data = data.removeprefix(prefix + ':')
return data
RE_ALIAS = r'(.*?)\s*\<([0-9A-Za-z]{1,})\>'
@@ -225,7 +224,7 @@ class PaymentIdentifier(Logger):
self.set_state(PaymentIdentifierState.INVALID)
else:
self.set_state(PaymentIdentifierState.AVAILABLE)
elif invoice_or_lnurl := maybe_extract_lightning_payment_identifier(text):
elif invoice_or_lnurl := maybe_extract_bech32_lightning_payment_identifier(text):
if invoice_or_lnurl.startswith('lnurl'):
self._type = PaymentIdentifierType.LNURL
try: