fix #6056

electrum/commands.py

@@ -58,6 +58,7 @@ from .lnpeer import channel_id_from_funding_tx
 from .plugin import run_hook
 from .version import ELECTRUM_VERSION
 from .simple_config import SimpleConfig
+from .lnaddr import parse_lightning_invoice
 
 
 if TYPE_CHECKING:
@@ -981,6 +982,10 @@ class Commands:
                                                                          password=password)
         return chan.funding_outpoint.to_str()
 
+    @command('')
+    async def decode_invoice(self, invoice):
+        return parse_lightning_invoice(invoice)
+
     @command('wn')
     async def lnpay(self, invoice, attempts=1, timeout=10, wallet: Abstract_Wallet = None):
         lnworker = wallet.lnworker

electrum/gui/kivy/uix/screens.py

@@ -33,7 +33,7 @@ from electrum.util import (parse_URI, InvalidBitcoinURI, PR_PAID, PR_UNKNOWN, PR
 from electrum.plugin import run_hook
 from electrum.wallet import InternalAddressCorruption
 from electrum import simple_config
-from electrum.lnaddr import lndecode
+from electrum.lnaddr import lndecode, parse_lightning_invoice
 from electrum.lnutil import RECEIVED, SENT, PaymentFailure
 
 from .dialogs.question import Question
@@ -299,7 +299,7 @@ class SendScreen(CScreen):
             return
         message = self.message
         if self.is_lightning:
-            return self.app.wallet.lnworker.parse_bech32_invoice(address)
+            return parse_lightning_invoice(address)
         else:  # on-chain
             if self.payment_request:
                 outputs = self.payment_request.get_outputs()

electrum/gui/qt/main_window.py

@@ -76,6 +76,7 @@ from electrum.logging import Logger
 from electrum.util import PR_PAID, PR_FAILED
 from electrum.util import pr_expiration_values
 from electrum.lnutil import ln_dummy_address
+from electrum.lnaddr import parse_lightning_invoice
 
 from .exception_window import Exception_Hook
 from .amountedit import AmountEdit, BTCAmountEdit, FreezableLineEdit, FeerateEdit
@@ -1492,7 +1493,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
             if not self.wallet.lnworker:
                 self.show_error(_('Lightning is disabled'))
                 return
-            invoice_dict = self.wallet.lnworker.parse_bech32_invoice(invoice)
+            invoice_dict = parse_lightning_invoice(invoice)
             if invoice_dict.get('amount') is None:
                 amount = self.amount_e.get_amount()
                 if amount:

electrum/lnaddr.py

@@ -13,6 +13,8 @@ from .bitcoin import hash160_to_b58_address, b58_address_to_hash160
 from .segwit_addr import bech32_encode, bech32_decode, CHARSET
 from . import constants
 from . import ecc
+from .util import PR_TYPE_LN
+from .bitcoin import COIN
 
 
 # BOLT #11:
@@ -307,6 +309,11 @@ class LnAddr(object):
 
 class LnDecodeException(Exception): pass
 
+class SerializableKey:
+    def __init__(self, pubkey):
+        self.pubkey = pubkey
+    def serialize(self):
+        return self.pubkey.get_public_key_bytes(True)
 
 def lndecode(invoice: str, *, verbose=False, expected_hrp=None) -> LnAddr:
     if expected_hrp is None:
@@ -460,11 +467,22 @@ def lndecode(invoice: str, *, verbose=False, expected_hrp=None) -> LnAddr:
 
     return addr
 
-class SerializableKey:
-    def __init__(self, pubkey):
-        self.pubkey = pubkey
-    def serialize(self):
-        return self.pubkey.get_public_key_bytes(True)
+
+
+
+def parse_lightning_invoice(invoice):
+    lnaddr = lndecode(invoice, expected_hrp=constants.net.SEGWIT_HRP)
+    amount = int(lnaddr.amount * COIN) if lnaddr.amount else None
+    return {
+        'type': PR_TYPE_LN,
+        'invoice': invoice,
+        'amount': amount,
+        'message': lnaddr.get_description(),
+        'time': lnaddr.date,
+        'exp': lnaddr.get_expiry(),
+        'pubkey': lnaddr.pubkey.serialize().hex(),
+        'rhash': lnaddr.paymenthash.hex(),
+    }
 
 if __name__ == '__main__':
     # run using

electrum/lnworker.py

@@ -529,20 +529,6 @@ class LNWallet(LNWorker):
                 out[k].append(v)
         return out
 
-    def parse_bech32_invoice(self, invoice):
-        lnaddr = lndecode(invoice, expected_hrp=constants.net.SEGWIT_HRP)
-        amount = int(lnaddr.amount * COIN) if lnaddr.amount else None
-        return {
-            'type': PR_TYPE_LN,
-            'invoice': invoice,
-            'amount': amount,
-            'message': lnaddr.get_description(),
-            'time': lnaddr.date,
-            'exp': lnaddr.get_expiry(),
-            'pubkey': bh2u(lnaddr.pubkey.serialize()),
-            'rhash': lnaddr.paymenthash.hex(),
-        }
-
     def get_lightning_history(self):
         out = {}
         for key, plist in self.get_settled_payments().items():