def make_unsigned_transaction(self,
*,
coins: Sequence[PartialTxInput],
outputs: List[PartialTxOutput],
fee=None,
change_addr: str = None,
is_sweep=False) -> PartialTransaction:
mk_tx = lambda o: Multisig_Wallet.make_unsigned_transaction(
self, coins=coins, outputs=o, fee=fee, change_addr=change_addr)
extra_fee = self.extra_fee() if not is_sweep else 0
if extra_fee:
address = self.billing_info['billing_address_segwit']
fee_output = PartialTxOutput.from_address_and_value(
address, extra_fee)
try:
tx = mk_tx(outputs + [fee_output])
except NotEnoughFunds:
# TrustedCoin won't charge if the total inputs is
# lower than their fee
tx = mk_tx(outputs)
if tx.input_value() >= extra_fee:
raise
self.logger.info("not charging for this tx")
else:
tx = mk_tx(outputs)
return tx
def read_invoice(self):
address = str(self.address)
if not address:
self.app.show_error(
_('Recipient not specified.') + ' ' +
_('Please scan a Doichain address or a payment request'))
return
if not self.amount:
self.app.show_error(_('Please enter an amount'))
return
try:
amount = self.app.get_amount(self.amount)
except:
self.app.show_error(_('Invalid amount') + ':\n' + self.amount)
return
message = self.message
if self.is_lightning:
return LNInvoice.from_bech32(address)
else: # on-chain
if self.payment_request:
outputs = self.payment_request.get_outputs()
else:
if not bitcoin.is_address(address):
self.app.show_error(
_('Invalid Doichain Address') + ':\n' + address)
return
outputs = [
PartialTxOutput.from_address_and_value(address, amount)
]
return self.app.wallet.create_invoice(outputs=outputs,
message=message,
pr=self.payment_request,
URI=self.parsed_URI)
def get_max_amount(self):
from electrum.transaction import PartialTxOutput
if run_hook('abort_send', self):
return ''
inputs = self.wallet.get_spendable_coins(None)
if not inputs:
return ''
addr = None
if self.send_screen:
addr = str(self.send_screen.screen.address)
if not addr:
addr = self.wallet.dummy_address()
outputs = [PartialTxOutput.from_address_and_value(addr, '!')]
try:
tx = self.wallet.make_unsigned_transaction(coins=inputs,
outputs=outputs)
except NoDynamicFeeEstimates as e:
Clock.schedule_once(
lambda dt, bound_e=e: self.show_error(str(bound_e)))
return ''
except NotEnoughFunds:
return ''
except InternalAddressCorruption as e:
self.show_error(str(e))
send_exception_to_crash_reporter(e)
return ''
amount = tx.output_value()
__, x_fee_amount = run_hook('get_tx_extra_fee', self.wallet,
tx) or (None, 0)
amount_after_all_fees = amount - x_fee_amount
return format_satoshis_plain(amount_after_all_fees,
self.decimal_point())
def make_tx(self, amount):
self._logger.debug('make_tx amount = %s' % str(amount))
if self.f_make_tx:
tx = self.f_make_tx(amount)
else:
# default impl
coins = self._wallet.wallet.get_spendable_coins(None)
outputs = [
PartialTxOutput.from_address_and_value(self.address, amount)
]
tx = self._wallet.wallet.make_unsigned_transaction(coins=coins,
outputs=outputs,
fee=None,
rbf=self._rbf)
self._logger.debug('fee: %d, inputs: %d, outputs: %d' %
(tx.get_fee(), len(tx.inputs()), len(tx.outputs())))
outputs = []
for o in tx.outputs():
outputs.append({
'address':
o.get_ui_address_str(),
'value_sats':
o.value,
'is_mine':
self._wallet.wallet.is_mine(o.get_ui_address_str())
})
self.outputs = outputs
return tx
def update_tx(self, onchain_amount):
if onchain_amount is None:
self.tx = None
return
outputs = [PartialTxOutput.from_address_and_value(ln_dummy_address(), onchain_amount)]
coins = self.window.get_coins()
self.tx = self.window.wallet.make_unsigned_transaction(
coins=coins,
outputs=outputs)
def do_send(self):
if not is_address(self.str_recipient):
print(_('Invalid address'))
return
try:
amount = int(Decimal(self.str_amount) * COIN)
except Exception:
print(_('Invalid Amount'))
return
try:
fee = int(Decimal(self.str_fee) * COIN)
except Exception:
print(_('Invalid Fee'))
return
if self.wallet.has_password():
password = self.password_dialog()
if not password:
return
else:
password = None
c = ""
while c != "y":
c = input("ok to send (y/n)?")
if c == "n": return
try:
tx = self.wallet.mktx(outputs=[
PartialTxOutput.from_address_and_value(self.str_recipient,
amount)
],
password=password,
fee=fee)
except Exception as e:
print(repr(e))
return
if self.str_description:
self.wallet.labels[tx.txid()] = self.str_description
print(_("Please wait..."))
try:
self.network.run_from_another_thread(
self.network.broadcast_transaction(tx))
except TxBroadcastError as e:
msg = e.get_message_for_gui()
print(msg)
except BestEffortRequestFailed as e:
msg = repr(e)
print(msg)
else:
print(_('Payment sent.'))
def update_tx(self, onchain_amount):
if onchain_amount is None:
self.tx = None
self.ok_button.setEnabled(False)
return
outputs = [PartialTxOutput.from_address_and_value(ln_dummy_address(), onchain_amount)]
coins = self.window.get_coins()
try:
self.tx = self.window.wallet.make_unsigned_transaction(
coins=coins,
outputs=outputs)
except (NotEnoughFunds, NoDynamicFeeEstimates) as e:
self.tx = None
self.ok_button.setEnabled(False)
def do_send(self):
if not is_address(self.str_recipient):
self.show_message(
_('Invalid {name} address').format(name=constants.net.NAME))
return
try:
amount = int(Decimal(self.str_amount) * constants.net.COIN)
except Exception:
self.show_message(_('Invalid Amount'))
return
try:
fee = int(Decimal(self.str_fee) * constants.net.COIN)
except Exception:
self.show_message(_('Invalid Fee'))
return
if self.wallet.has_password():
password = self.password_dialog()
if not password:
return
else:
password = None
try:
tx = self.wallet.mktx(outputs=[
PartialTxOutput.from_address_and_value(self.str_recipient,
amount)
],
password=password,
fee=fee)
except Exception as e:
self.show_message(repr(e))
return
if self.str_description:
self.wallet.labels[tx.txid()] = self.str_description
self.show_message(_("Please wait..."), getchar=False)
try:
self.network.run_from_another_thread(
self.network.broadcast_transaction(tx))
except TxBroadcastError as e:
msg = e.get_message_for_gui()
self.show_message(msg)
except BestEffortRequestFailed as e:
msg = repr(e)
self.show_message(msg)
else:
self.show_message(_('Payment sent.'))
self.do_clear()
def update_tx(self, onchain_amount: Union[int, str]):
"""Updates the transaction associated with a forward swap."""
if onchain_amount is None:
self.tx = None
self.ids.ok_button.disabled = True
return
outputs = [PartialTxOutput.from_address_and_value(ln_dummy_address(), onchain_amount)]
coins = self.app.wallet.get_spendable_coins(None)
try:
self.tx = self.app.wallet.make_unsigned_transaction(
coins=coins,
outputs=outputs)
except (NotEnoughFunds, NoDynamicFeeEstimates):
self.tx = None
self.ids.ok_button.disabled = True
def _update_tx(self, onchain_amount):
"""Updates self.tx. No other side-effects."""
if self.is_reverse:
return
if onchain_amount is None:
self.tx = None
return
outputs = [
PartialTxOutput.from_address_and_value(ln_dummy_address(),
onchain_amount)
]
coins = self.window.get_coins()
try:
self.tx = self.window.wallet.make_unsigned_transaction(
coins=coins, outputs=outputs)
except (NotEnoughFunds, NoDynamicFeeEstimates) as e:
self.tx = None
def save_invoice(self):
assert self.canSave
assert not self._amount.isMax
self._logger.debug('saving invoice to %s, amount=%s, message=%s' % (self._recipient, repr(self._amount), self._message))
inv_amt = self._amount.satsInt
try:
outputs = [PartialTxOutput.from_address_and_value(self._recipient, inv_amt)]
self._logger.debug(repr(outputs))
invoice = self._wallet.wallet.create_invoice(outputs=outputs, message=self._message, pr=None, URI=None)
except InvoiceError as e:
self.invoiceCreateError.emit('fatal', _('Error creating payment') + ':\n' + str(e))
return
self.key = self._wallet.wallet.get_key_for_outgoing_invoice(invoice)
self._wallet.wallet.save_invoice(invoice)
self.invoiceSaved.emit()
def send_onchain(self, address, amount, fee=None, rbf=False):
self._logger.info('send_onchain: %s %d' % (address, amount))
coins = self.wallet.get_spendable_coins(None)
if not bitcoin.is_address(address):
self._logger.warning('Invalid Bitcoin Address: ' + address)
return False
outputs = [PartialTxOutput.from_address_and_value(address, amount)]
self._logger.info(str(outputs))
output_values = [x.value for x in outputs]
if any(parse_max_spend(outval) for outval in output_values):
output_value = '!'
else:
output_value = sum(output_values)
self._logger.info(str(output_value))
# see qt/confirm_tx_dialog qt/main_window
tx = self.wallet.make_unsigned_transaction(coins=coins,
outputs=outputs,
fee=None)
self._logger.info(str(tx.to_json()))
use_rbf = bool(self.wallet.config.get('use_rbf', True))
tx.set_rbf(use_rbf)
self.sign_and_broadcast(tx)
def validateRecipient(self, recipient):
if not recipient:
self.setInvoiceType(QEInvoice.Type.Invalid)
return
maybe_lightning_invoice = recipient
def _payment_request_resolved(request):
self._logger.debug('resolved payment request')
outputs = request.get_outputs()
invoice = self.create_onchain_invoice(outputs, None, request, None)
self.setValidOnchainInvoice(invoice)
try:
self._bip21 = parse_URI(recipient, _payment_request_resolved)
if self._bip21:
if 'r' in self._bip21 or ('name' in self._bip21 and 'sig' in self._bip21): # TODO set flag in util?
# let callback handle state
return
if ':' not in recipient:
# address only
self.setValidAddressOnly()
self.validationSuccess.emit()
return
else:
# fallback lightning invoice?
if 'lightning' in self._bip21:
maybe_lightning_invoice = self._bip21['lightning']
except InvalidBitcoinURI as e:
self._bip21 = None
self._logger.debug(repr(e))
lninvoice = None
maybe_lightning_invoice = maybe_extract_lightning_payment_identifier(maybe_lightning_invoice)
if maybe_lightning_invoice is not None:
try:
lninvoice = Invoice.from_bech32(maybe_lightning_invoice)
except InvoiceError as e:
e2 = e.__cause__
if isinstance(e2, LnInvoiceException):
self.validationError.emit('unknown', _("Error parsing Lightning invoice") + f":\n{e2}")
self.clear()
return
if isinstance(e2, lnutil.IncompatibleOrInsaneFeatures):
self.validationError.emit('unknown', _("Invoice requires unknown or incompatible Lightning feature") + f":\n{e2!r}")
self.clear()
return
self._logger.exception(repr(e))
if not lninvoice and not self._bip21:
self.validationError.emit('unknown',_('Unknown invoice'))
self.clear()
return
if lninvoice:
if not self._wallet.wallet.has_lightning():
if not self._bip21:
# TODO: lightning onchain fallback in ln invoice
#self.validationError.emit('no_lightning',_('Detected valid Lightning invoice, but Lightning not enabled for wallet'))
self.setValidLightningInvoice(lninvoice)
self.clear()
return
else:
self._logger.debug('flow with LN but not LN enabled AND having bip21 uri')
self.setValidOnchainInvoice(self._bip21['address'])
else:
self.setValidLightningInvoice(lninvoice)
if not self._wallet.wallet.lnworker.channels:
self.validationWarning.emit('no_channels',_('Detected valid Lightning invoice, but there are no open channels'))
else:
self.validationSuccess.emit()
else:
self._logger.debug('flow without LN but having bip21 uri')
if 'amount' not in self._bip21: #TODO can we have amount-less invoices?
self.validationError.emit('no_amount', 'no amount in uri')
return
outputs = [PartialTxOutput.from_address_and_value(self._bip21['address'], self._bip21['amount'])]
self._logger.debug(outputs)
message = self._bip21['message'] if 'message' in self._bip21 else ''
invoice = self.create_onchain_invoice(outputs, message, None, self._bip21)
self._logger.debug(repr(invoice))
self.setValidOnchainInvoice(invoice)
self.validationSuccess.emit()
locktime = 1602565200
# Build the Transaction Input
_, privkey, compressed = deserialize_privkey(wif)
pubkey = ECPrivkey(privkey).get_public_key_hex(compressed=compressed)
prevout = TxOutpoint(txid=txid, out_idx=vout)
txin = PartialTxInput(prevout=prevout)
txin.nsequence = sequence
txin.script_type = script_type
expiry = b2x(lx(b2x(locktime)))
redeem_script = compile([
expiry, 'OP_CHECKLOCKTIMEVERIFY', 'OP_DROP', pubkey, 'OP_CHECKSIG'])
txin.redeem_script = x(redeem_script)
# Build the Transaction Output
txout = PartialTxOutput.from_address_and_value(address, sats_less_fees)
# Build and sign the transaction
tx = P2SHPartialTransaction.from_io([txin], [txout], locktime=locktime)
tx.version = 1
sig = tx.sign_txin(0, privkey)
txin.script_sig = x(compile([sig , redeem_script]))
# Get the serialized txn and compute txid
txn = tx.serialize()
txid = b2lx(sha256d(x(txn)))
# Ensure we arrived at where we intended
if txid != otxid:
print("Did not achive target TXID hash")
print("Perhaps R-value hashing needs to be reverted")
