def get_max_amount(self):
inputs = self.wallet.get_spendable_coins(None, self.electrum_config)
addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
outputs = [(TYPE_ADDRESS, addr, '!')]
tx = self.wallet.make_unsigned_transaction(inputs, outputs, self.electrum_config)
amount = tx.output_value()
return format_satoshis_plain(amount, self.decimal_point())
def fiat_to_btc(self, fiat_amount):
if not fiat_amount:
return ''
rate = run_hook('exchange_rate')
if not rate:
return ''
satoshis = int(pow(10,8) * Decimal(fiat_amount) / Decimal(rate))
return format_satoshis_plain(satoshis, self.decimal_point())
def fiat_to_btc(self, fiat_amount):
if not fiat_amount:
return ''
rate = self.fx.exchange_rate()
if rate.is_nan():
return ''
satoshis = int(pow(10,8) * Decimal(fiat_amount) / Decimal(rate))
return format_satoshis_plain(satoshis, self.decimal_point())
def get_max_amount(self):
if run_hook('abort_send', self):
return ''
inputs = self.wallet.get_spendable_coins(None, self.electrum_config)
if not inputs:
return ''
addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
outputs = [(TYPE_ADDRESS, addr, '!')]
try:
tx = self.wallet.make_unsigned_transaction(inputs, outputs, self.electrum_config)
except NoDynamicFeeEstimates as e:
Clock.schedule_once(lambda dt, bound_e=e: self.show_error(str(bound_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 sign_transaction(self, tx, password):
if tx.is_complete():
return
#if tx.error:
# raise BaseException(tx.error)
self.signing = True
inputs = []
inputsPaths = []
pubKeys = []
trustedInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
changeAmount = None
output = None
outputAmount = None
use2FA = False
pin = ""
rawTx = tx.serialize()
# Fetch inputs of the transaction to sign
for txinput in tx.inputs:
if ('is_coinbase' in txinput and txinput['is_coinbase']):
self.give_error("Coinbase not supported") # should never happen
inputs.append([ self.transactions[txinput['prevout_hash']].raw,
txinput['prevout_n'] ])
address = txinput['address']
inputsPaths.append(self.address_id(address))
pubKeys.append(self.get_public_keys(address))
# Recognize outputs - only one output and one change is authorized
if len(tx.outputs) > 2: # should never happen
self.give_error("Transaction with more than 2 outputs not supported")
for type, address, amount in tx.outputs:
assert type == 'address'
if self.is_change(address):
changePath = self.address_id(address)
changeAmount = amount
else:
if output <> None: # should never happen
self.give_error("Multiple outputs with no change not supported")
output = address
outputAmount = amount
self.get_client() # prompt for the PIN before displaying the dialog if necessary
if not self.check_proper_device():
self.give_error('Wrong device or password')
self.plugin.handler.show_message("Signing Transaction ...")
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
txtmp = bitcoinTransaction(bytearray(utxo[0].decode('hex')))
trustedInputs.append(self.get_client().getTrustedInput(txtmp, utxo[1]))
# TODO : Support P2SH later
redeemScripts.append(txtmp.outputs[utxo[1]].script)
# Sign all inputs
firstTransaction = True
inputIndex = 0
while inputIndex < len(inputs):
self.get_client().startUntrustedTransaction(firstTransaction, inputIndex,
trustedInputs, redeemScripts[inputIndex])
outputData = self.get_client().finalizeInput(output, format_satoshis_plain(outputAmount),
format_satoshis_plain(self.get_tx_fee(tx)), changePath, bytearray(rawTx.decode('hex')))
if firstTransaction:
transactionOutput = outputData['outputData']
if outputData['confirmationNeeded']:
# TODO : handle different confirmation types. For the time being only supports keyboard 2FA
self.plugin.handler.stop()
if 'keycardData' in outputData:
pin2 = ""
for keycardIndex in range(len(outputData['keycardData'])):
msg = "Do not enter your device PIN here !\r\n\r\n" + \
"Your Ledger Wallet wants to talk to you and tell you a unique second factor code.\r\n" + \
"For this to work, please match the character between stars of the output address using your security card\r\n\r\n" + \
"Output address : "
for index in range(len(output)):
if index == outputData['keycardData'][keycardIndex]:
msg = msg + "*" + output[index] + "*"
else:
msg = msg + output[index]
msg = msg + "\r\n"
confirmed, p, pin = self.password_dialog(msg)
if not confirmed:
raise Exception('Aborted by user')
try:
pin2 = pin2 + chr(int(pin[0], 16))
except:
raise Exception('Invalid PIN character')
pin = pin2
else:
use2FA = True
confirmed, p, pin = self.password_dialog()
if not confirmed:
raise Exception('Aborted by user')
pin = pin.encode()
self.client.bad = True
self.device_checked = False
self.get_client(True)
self.plugin.handler.show_message("Signing ...")
else:
# Sign input with the provided PIN
inputSignature = self.get_client().untrustedHashSign(inputsPaths[inputIndex],
pin)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
firstTransaction = False
except Exception, e:
self.give_error(e, True)
def setAmount(self, amount):
if amount is None:
self.setText(" ") # Space forces repaint in case units changed
else:
self.setText(format_satoshis_plain(amount, self.decimal_point()))
def get_max_amount(self):
inputs = self.wallet.get_spendable_coins(None)
addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, addr, None)
return format_satoshis_plain(amount, self.decimal_point())
def setAmount(self, amount):
if amount is None:
self.setText("")
else:
self.setText(format_satoshis_plain(amount, self.decimal_point()))
def get_max_amount(self):
inputs = self.wallet.get_spendable_coins(None)
amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, None)
return format_satoshis_plain(amount, self.decimal_point())
def setAmount(self, amount):
if amount is None:
self.setText(" ") # Space forces repaint in case units changed
else:
self.setText(format_satoshis_plain(amount, self.decimal_point()))
def sign_transaction(self, tx, password):
if tx.is_complete():
return
client = self.get_client()
self.signing = True
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
changeAmount = None
output = None
outputAmount = None
p2shTransaction = False
reorganize = False
pin = ""
self.get_client(
) # prompt for the PIN before displaying the dialog if necessary
# Fetch inputs of the transaction to sign
derivations = self.get_tx_derivations(tx)
for txin in tx.inputs():
if txin.get('is_coinbase'):
self.give_error(
"Coinbase not supported") # should never happen
if len(txin['pubkeys']) > 1:
p2shTransaction = True
for i, x_pubkey in enumerate(txin['x_pubkeys']):
if x_pubkey in derivations:
signingPos = i
s = derivations.get(x_pubkey)
hwAddress = "%s/%d/%d" % (self.get_derivation()[2:], s[0],
s[1])
break
else:
self.give_error("No matching x_key for sign_transaction"
) # should never happen
inputs.append([
txin['prev_tx'].raw, txin['prevout_n'],
txin.get('redeemScript'), txin['prevout_hash'], signingPos
])
inputsPaths.append(hwAddress)
pubKeys.append(txin['pubkeys'])
# Sanity check
if p2shTransaction:
for txinput in tx.inputs():
if len(txinput['pubkeys']) < 2:
self.give_error(
"P2SH / regular input mixed in same transaction not supported"
) # should never happen
txOutput = var_int(len(tx.outputs()))
for txout in tx.outputs():
output_type, addr, amount = txout
txOutput += int_to_hex(amount, 8)
script = tx.pay_script(output_type, addr)
txOutput += var_int(len(script) / 2)
txOutput += script
txOutput = txOutput.decode('hex')
# Recognize outputs - only one output and one change is authorized
if not p2shTransaction:
if len(tx.outputs()) > 2: # should never happen
self.give_error(
"Transaction with more than 2 outputs not supported")
for _type, address, amount in tx.outputs():
assert _type == TYPE_ADDRESS
info = tx.output_info.get(address)
if info is not None:
index, xpubs, m = info
changePath = self.get_derivation()[2:] + "/%d/%d" % index
changeAmount = amount
else:
output = address
outputAmount = amount
self.handler.show_message(
_("Confirm Transaction on your Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
if not p2shTransaction:
txtmp = bitcoinTransaction(bytearray(
utxo[0].decode('hex')))
chipInputs.append(self.get_client().getTrustedInput(
txtmp, utxo[1]))
redeemScripts.append(txtmp.outputs[utxo[1]].script)
else:
tmp = utxo[3].decode('hex')[::-1].encode('hex')
tmp += int_to_hex(utxo[1], 4)
chipInputs.append({'value': tmp.decode('hex')})
redeemScripts.append(bytearray(utxo[2].decode('hex')))
# Sign all inputs
firstTransaction = True
inputIndex = 0
rawTx = tx.serialize()
while inputIndex < len(inputs):
self.get_client().startUntrustedTransaction(
firstTransaction, inputIndex, chipInputs,
redeemScripts[inputIndex])
if not p2shTransaction:
outputData = self.get_client().finalizeInput(
output, format_satoshis_plain(outputAmount),
format_satoshis_plain(tx.get_fee()), changePath,
bytearray(rawTx.decode('hex')))
reorganize = True
else:
outputData = self.get_client().finalizeInputFull(txOutput)
outputData['outputData'] = txOutput
if firstTransaction:
transactionOutput = outputData['outputData']
if outputData['confirmationNeeded']:
# TODO : handle different confirmation types. For the time being only supports keyboard 2FA
self.handler.clear_dialog()
if 'keycardData' in outputData:
pin2 = ""
for keycardIndex in range(
len(outputData['keycardData'])):
msg = "Do not enter your device PIN here !\r\n\r\n" + \
"Your Ledger Wallet wants to talk to you and tell you a unique second factor code.\r\n" + \
"For this to work, please match the character between stars of the output address using your security card\r\n\r\n" + \
"Output address : "
for index in range(len(output)):
if index == outputData['keycardData'][
keycardIndex]:
msg = msg + "*" + output[index] + "*"
else:
msg = msg + output[index]
msg = msg + "\r\n"
confirmed, p, pin = self.password_dialog(msg)
if not confirmed:
raise Exception('Aborted by user')
try:
pin2 = pin2 + chr(int(pin[0], 16))
except:
raise Exception('Invalid PIN character')
pin = pin2
else:
confirmed, p, pin = self.password_dialog()
if not confirmed:
raise Exception('Aborted by user')
pin = pin.encode()
#self.plugin.get_client(self, True, True)
self.handler.show_message("Signing ...")
else:
# Sign input with the provided PIN
inputSignature = self.get_client().untrustedHashSign(
inputsPaths[inputIndex], pin)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
firstTransaction = False
except BaseException as e:
traceback.print_exc(file=sys.stdout)
self.give_error(e, True)
finally:
self.handler.clear_dialog()
# Reformat transaction
inputIndex = 0
while inputIndex < len(inputs):
if p2shTransaction:
signaturesPack = [signatures[inputIndex]] * len(
pubKeys[inputIndex])
inputScript = get_p2sh_input_script(redeemScripts[inputIndex],
signaturesPack)
preparedTrustedInputs.append([
("\x00" * 4) + chipInputs[inputIndex]['value'], inputScript
])
else:
inputScript = get_regular_input_script(
signatures[inputIndex],
pubKeys[inputIndex][0].decode('hex'))
preparedTrustedInputs.append(
[chipInputs[inputIndex]['value'], inputScript])
inputIndex = inputIndex + 1
updatedTransaction = format_transaction(transactionOutput,
preparedTrustedInputs)
updatedTransaction = hexlify(updatedTransaction)
if reorganize:
tx.update(updatedTransaction)
else:
tx.update_signatures(updatedTransaction)
self.signing = False
def sign_transaction(self, tx, password):
if tx.is_complete():
return
client = self.get_client()
self.signing = True
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
changeAmount = None
output = None
outputAmount = None
p2shTransaction = False
reorganize = False
pin = ""
self.get_client() # prompt for the PIN before displaying the dialog if necessary
# Fetch inputs of the transaction to sign
derivations = self.get_tx_derivations(tx)
for txin in tx.inputs():
if txin.get('is_coinbase'):
self.give_error("Coinbase not supported") # should never happen
if txin['type'] in ['p2sh']:
p2shTransaction = True
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
for i, x_pubkey in enumerate(x_pubkeys):
if x_pubkey in derivations:
signingPos = i
s = derivations.get(x_pubkey)
hwAddress = "%s/%d/%d" % (self.get_derivation()[2:], s[0], s[1])
break
else:
self.give_error("No matching x_key for sign_transaction") # should never happen
inputs.append([txin['prev_tx'].raw, txin['prevout_n'], txin.get('redeemScript'), txin['prevout_hash'], signingPos ])
inputsPaths.append(hwAddress)
pubKeys.append(pubkeys)
# Sanity check
if p2shTransaction:
for txin in tx.inputs():
if txin['type'] != 'p2sh':
self.give_error("P2SH / regular input mixed in same transaction not supported") # should never happen
txOutput = var_int(len(tx.outputs()))
for txout in tx.outputs():
output_type, addr, amount = txout
txOutput += int_to_hex(amount, 8)
script = tx.pay_script(output_type, addr)
txOutput += var_int(len(script)/2)
txOutput += script
txOutput = txOutput.decode('hex')
# Recognize outputs - only one output and one change is authorized
if not p2shTransaction:
if not self.get_client_electrum().supports_multi_output():
if len(tx.outputs()) > 2:
self.give_error("Transaction with more than 2 outputs not supported")
for _type, address, amount in tx.outputs():
assert _type == TYPE_ADDRESS
info = tx.output_info.get(address)
if (info is not None) and (len(tx.outputs()) != 1):
index, xpubs, m = info
changePath = self.get_derivation()[2:] + "/%d/%d"%index
changeAmount = amount
else:
output = address
outputAmount = amount
self.handler.show_message(_("Confirm Transaction on your Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
if not p2shTransaction:
txtmp = bitcoinTransaction(bytearray(utxo[0].decode('hex')))
chipInputs.append(self.get_client().getTrustedInput(txtmp, utxo[1]))
redeemScripts.append(txtmp.outputs[utxo[1]].script)
else:
tmp = utxo[3].decode('hex')[::-1].encode('hex')
tmp += int_to_hex(utxo[1], 4)
chipInputs.append({'value' : tmp.decode('hex')})
redeemScripts.append(bytearray(utxo[2].decode('hex')))
# Sign all inputs
firstTransaction = True
inputIndex = 0
rawTx = tx.serialize()
self.get_client().enableAlternate2fa(False)
while inputIndex < len(inputs):
self.get_client().startUntrustedTransaction(firstTransaction, inputIndex,
chipInputs, redeemScripts[inputIndex])
if not p2shTransaction:
outputData = self.get_client().finalizeInput(output, format_satoshis_plain(outputAmount),
format_satoshis_plain(tx.get_fee()), changePath, bytearray(rawTx.decode('hex')))
reorganize = True
else:
outputData = self.get_client().finalizeInputFull(txOutput)
outputData['outputData'] = txOutput
if firstTransaction:
transactionOutput = outputData['outputData']
if outputData['confirmationNeeded']:
outputData['address'] = output
self.handler.clear_dialog()
pin = self.handler.get_auth( outputData ) # does the authenticate dialog and returns pin
if not pin:
raise UserWarning()
if pin != 'paired':
self.handler.show_message(_("Confirmed. Signing Transaction..."))
else:
# Sign input with the provided PIN
inputSignature = self.get_client().untrustedHashSign(inputsPaths[inputIndex], pin)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
if pin != 'paired':
firstTransaction = False
except UserWarning:
self.handler.show_error(_('Cancelled by user'))
return
except BaseException as e:
traceback.print_exc(file=sys.stdout)
self.give_error(e, True)
finally:
self.handler.clear_dialog()
# Reformat transaction
inputIndex = 0
while inputIndex < len(inputs):
if p2shTransaction:
signaturesPack = [signatures[inputIndex]] * len(pubKeys[inputIndex])
inputScript = get_p2sh_input_script(redeemScripts[inputIndex], signaturesPack)
preparedTrustedInputs.append([ ("\x00" * 4) + chipInputs[inputIndex]['value'], inputScript ])
else:
inputScript = get_regular_input_script(signatures[inputIndex], pubKeys[inputIndex][0].decode('hex'))
preparedTrustedInputs.append([ chipInputs[inputIndex]['value'], inputScript ])
inputIndex = inputIndex + 1
updatedTransaction = format_transaction(transactionOutput, preparedTrustedInputs)
updatedTransaction = hexlify(updatedTransaction)
if reorganize:
tx.update(updatedTransaction)
else:
tx.update_signatures(updatedTransaction)
self.signing = False
def get_max_amount(self):
inputs = self.wallet.get_spendable_coins(None)
amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs,
None)
return format_satoshis_plain(amount, self.decimal_point())
def test_format_satoshis_plain_to_mbtc(self):
self.assertEqual("0.01234", format_satoshis_plain(1234,
decimal_point=5))
def test_format_satoshis_plain_decimal(self):
self.assertEqual("0.00001234", format_satoshis_plain(Decimal(1234)))
def setAmount(self, amount):
if amount is None:
self.setText("")
else:
self.setText(format_satoshis_plain(amount, self.decimal_point()))
def get_max_amount(self):
inputs = self.wallet.get_spendable_coins(None)
addr = str(self.send_screen.screen.address) or self.wallet.dummy_address()
amount, fee = self.wallet.get_max_amount(self.electrum_config, inputs, addr, None)
return format_satoshis_plain(amount, self.decimal_point())
def format_amount_and_units(self, x):
return format_satoshis_plain(
x, self.decimal_point()) + ' ' + self.base_unit
def setAmount(self, amount_sat):
if amount_sat is None:
self.setText(" ") # Space forces repaint in case units changed
else:
self.setText(format_satoshis_plain(amount_sat, decimal_point=self.decimal_point()))
self.repaint() # macOS hack for #6269
def sign_transaction(self, tx, password):
if tx.is_complete():
return
client = self.get_client()
self.signing = True
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
changeAmount = None
output = None
outputAmount = None
p2shTransaction = False
reorganize = False
pin = ""
self.get_client(
) # prompt for the PIN before displaying the dialog if necessary
# Fetch inputs of the transaction to sign
derivations = self.get_tx_derivations(tx)
for txin in tx.inputs():
if txin['type'] == 'coinbase':
self.give_error(
"Coinbase not supported") # should never happen
if txin['type'] in ['p2sh']:
p2shTransaction = True
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
for i, x_pubkey in enumerate(x_pubkeys):
if x_pubkey in derivations:
signingPos = i
s = derivations.get(x_pubkey)
hwAddress = "%s/%d/%d" % (self.get_derivation()[2:], s[0],
s[1])
break
else:
self.give_error("No matching x_key for sign_transaction"
) # should never happen
inputs.append([
txin['prev_tx'].raw, txin['prevout_n'],
txin.get('redeemScript'), txin['prevout_hash'], signingPos
])
inputsPaths.append(hwAddress)
pubKeys.append(pubkeys)
# Sanity check
if p2shTransaction:
for txin in tx.inputs():
if txin['type'] != 'p2sh':
self.give_error(
"P2SH / regular input mixed in same transaction not supported"
) # should never happen
txOutput = var_int(len(tx.outputs()))
for txout in tx.outputs():
output_type, addr, amount = txout
txOutput += int_to_hex(amount, 8)
script = tx.pay_script(output_type, addr)
txOutput += var_int(len(script) / 2)
txOutput += script
txOutput = txOutput.decode('hex')
# Recognize outputs - only one output and one change is authorized
if not p2shTransaction:
if not self.get_client_electrum().supports_multi_output():
if len(tx.outputs()) > 2:
self.give_error(
"Transaction with more than 2 outputs not supported")
for _type, address, amount in tx.outputs():
assert _type == TYPE_ADDRESS
info = tx.output_info.get(address)
if (info is not None) and (len(tx.outputs()) != 1):
index, xpubs, m = info
changePath = self.get_derivation()[2:] + "/%d/%d" % index
changeAmount = amount
else:
output = address
outputAmount = amount
self.handler.show_message(
_("Confirm Transaction on your Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
if not p2shTransaction:
txtmp = bitcoinTransaction(bytearray(
utxo[0].decode('hex')))
chipInputs.append(self.get_client().getTrustedInput(
txtmp, utxo[1]))
redeemScripts.append(txtmp.outputs[utxo[1]].script)
else:
tmp = utxo[3].decode('hex')[::-1].encode('hex')
tmp += int_to_hex(utxo[1], 4)
chipInputs.append({'value': tmp.decode('hex')})
redeemScripts.append(bytearray(utxo[2].decode('hex')))
# Sign all inputs
firstTransaction = True
inputIndex = 0
rawTx = tx.serialize()
self.get_client().enableAlternate2fa(False)
while inputIndex < len(inputs):
self.get_client().startUntrustedTransaction(
firstTransaction, inputIndex, chipInputs,
redeemScripts[inputIndex])
if not p2shTransaction:
outputData = self.get_client().finalizeInput(
output, format_satoshis_plain(outputAmount),
format_satoshis_plain(tx.get_fee()), changePath,
bytearray(rawTx.decode('hex')))
reorganize = True
else:
outputData = self.get_client().finalizeInputFull(txOutput)
outputData['outputData'] = txOutput
if firstTransaction:
transactionOutput = outputData['outputData']
if outputData['confirmationNeeded']:
outputData['address'] = output
self.handler.clear_dialog()
pin = self.handler.get_auth(
outputData
) # does the authenticate dialog and returns pin
if not pin:
raise UserWarning()
if pin != 'paired':
self.handler.show_message(
_("Confirmed. Signing Transaction..."))
else:
# Sign input with the provided PIN
inputSignature = self.get_client().untrustedHashSign(
inputsPaths[inputIndex], pin)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
if pin != 'paired':
firstTransaction = False
except UserWarning:
self.handler.show_error(_('Cancelled by user'))
return
except BaseException as e:
traceback.print_exc(file=sys.stdout)
self.give_error(e, True)
finally:
self.handler.clear_dialog()
# Reformat transaction
inputIndex = 0
while inputIndex < len(inputs):
if p2shTransaction:
signaturesPack = [signatures[inputIndex]] * len(
pubKeys[inputIndex])
inputScript = get_p2sh_input_script(redeemScripts[inputIndex],
signaturesPack)
preparedTrustedInputs.append([
("\x00" * 4) + chipInputs[inputIndex]['value'], inputScript
])
else:
inputScript = get_regular_input_script(
signatures[inputIndex],
pubKeys[inputIndex][0].decode('hex'))
preparedTrustedInputs.append(
[chipInputs[inputIndex]['value'], inputScript])
inputIndex = inputIndex + 1
updatedTransaction = format_transaction(transactionOutput,
preparedTrustedInputs)
updatedTransaction = hexlify(updatedTransaction)
if reorganize:
tx.update(updatedTransaction)
else:
tx.update_signatures(updatedTransaction)
self.signing = False
def formatPlain_(self, amount: ObjCInstance) -> ObjCInstance:
amount = int(amount)
return ns_from_py(format_satoshis_plain(amount, self.decimalPoint()))
def format_amount_and_units(self, x):
return format_satoshis_plain(x, self.decimal_point()) + ' ' + self.base_unit
def sign_transaction(self, tx, password):
if tx.is_complete():
return
client = self.get_client()
self.signing = True
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
preparedTrustedInputs = []
changePath = ""
changeAmount = None
output = None
outputAmount = None
p2shTransaction = False
reorganize = False
pin = ""
self.get_client() # prompt for the PIN before displaying the dialog if necessary
# Fetch inputs of the transaction to sign
derivations = self.get_tx_derivations(tx)
for txin in tx.inputs():
if txin.get('is_coinbase'):
self.give_error("Coinbase not supported") # should never happen
if len(txin['pubkeys']) > 1:
p2shTransaction = True
for i, x_pubkey in enumerate(txin['x_pubkeys']):
if x_pubkey in derivations:
signingPos = i
s = derivations.get(x_pubkey)
hwAddress = "%s/%d/%d" % (self.get_derivation()[2:], s[0], s[1])
break
else:
self.give_error("No matching x_key for sign_transaction") # should never happen
inputs.append([txin['prev_tx'].raw, txin['prevout_n'], txin.get('redeemScript'), txin['prevout_hash'], signingPos ])
inputsPaths.append(hwAddress)
pubKeys.append(txin['pubkeys'])
# Sanity check
if p2shTransaction:
for txinput in tx.inputs():
if len(txinput['pubkeys']) < 2:
self.give_error("P2SH / regular input mixed in same transaction not supported") # should never happen
txOutput = var_int(len(tx.outputs()))
for txout in tx.outputs():
output_type, addr, amount = txout
txOutput += int_to_hex(amount, 8)
script = tx.pay_script(output_type, addr)
txOutput += var_int(len(script)/2)
txOutput += script
txOutput = txOutput.decode('hex')
# Recognize outputs - only one output and one change is authorized
if not p2shTransaction:
if len(tx.outputs()) > 2: # should never happen
self.give_error("Transaction with more than 2 outputs not supported")
for _type, address, amount in tx.outputs():
assert _type == TYPE_ADDRESS
info = tx.output_info.get(address)
if info is not None:
index, xpubs, m = info
changePath = self.get_derivation()[2:] + "/%d/%d"%index
changeAmount = amount
else:
output = address
outputAmount = amount
self.handler.show_message(_("Confirm Transaction on your Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
if not p2shTransaction:
txtmp = bitcoinTransaction(bytearray(utxo[0].decode('hex')))
chipInputs.append(self.get_client().getTrustedInput(txtmp, utxo[1]))
redeemScripts.append(txtmp.outputs[utxo[1]].script)
else:
tmp = utxo[3].decode('hex')[::-1].encode('hex')
tmp += int_to_hex(utxo[1], 4)
chipInputs.append({'value' : tmp.decode('hex')})
redeemScripts.append(bytearray(utxo[2].decode('hex')))
# Sign all inputs
firstTransaction = True
inputIndex = 0
rawTx = tx.serialize()
while inputIndex < len(inputs):
self.get_client().startUntrustedTransaction(firstTransaction, inputIndex,
chipInputs, redeemScripts[inputIndex])
if not p2shTransaction:
outputData = self.get_client().finalizeInput(output, format_satoshis_plain(outputAmount),
format_satoshis_plain(tx.get_fee()), changePath, bytearray(rawTx.decode('hex')))
reorganize = True
else:
outputData = self.get_client().finalizeInputFull(txOutput)
outputData['outputData'] = txOutput
if firstTransaction:
transactionOutput = outputData['outputData']
if outputData['confirmationNeeded']:
# TODO : handle different confirmation types. For the time being only supports keyboard 2FA
self.handler.clear_dialog()
if 'keycardData' in outputData:
pin2 = ""
for keycardIndex in range(len(outputData['keycardData'])):
msg = "Do not enter your device PIN here !\r\n\r\n" + \
"Your Ledger Wallet wants to talk to you and tell you a unique second factor code.\r\n" + \
"For this to work, please match the character between stars of the output address using your security card\r\n\r\n" + \
"Output address : "
for index in range(len(output)):
if index == outputData['keycardData'][keycardIndex]:
msg = msg + "*" + output[index] + "*"
else:
msg = msg + output[index]
msg = msg + "\r\n"
confirmed, p, pin = self.password_dialog(msg)
if not confirmed:
raise Exception('Aborted by user')
try:
pin2 = pin2 + chr(int(pin[0], 16))
except:
raise Exception('Invalid PIN character')
pin = pin2
else:
confirmed, p, pin = self.password_dialog()
if not confirmed:
raise Exception('Aborted by user')
pin = pin.encode()
#self.plugin.get_client(self, True, True)
self.handler.show_message("Signing ...")
else:
# Sign input with the provided PIN
inputSignature = self.get_client().untrustedHashSign(inputsPaths[inputIndex],
pin)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
firstTransaction = False
except BaseException as e:
traceback.print_exc(file=sys.stdout)
self.give_error(e, True)
finally:
self.handler.clear_dialog()
# Reformat transaction
inputIndex = 0
while inputIndex < len(inputs):
if p2shTransaction:
signaturesPack = [signatures[inputIndex]] * len(pubKeys[inputIndex])
inputScript = get_p2sh_input_script(redeemScripts[inputIndex], signaturesPack)
preparedTrustedInputs.append([ ("\x00" * 4) + chipInputs[inputIndex]['value'], inputScript ])
else:
inputScript = get_regular_input_script(signatures[inputIndex], pubKeys[inputIndex][0].decode('hex'))
preparedTrustedInputs.append([ chipInputs[inputIndex]['value'], inputScript ])
inputIndex = inputIndex + 1
updatedTransaction = format_transaction(transactionOutput, preparedTrustedInputs)
updatedTransaction = hexlify(updatedTransaction)
if reorganize:
tx.update(updatedTransaction)
else:
tx.update_signatures(updatedTransaction)
self.signing = False