def test_payto(self, mock_save_db):
wallet = restore_wallet_from_text('disagree rug lemon bean unaware square alone beach tennis exhibit fix mimic',
gap_limit=2,
path='if_this_exists_mocking_failed_648151893',
config=self.config)['wallet']
# bootstrap wallet
funding_tx = Transaction('0200000000010165806607dd458280cb57bf64a16cf4be85d053145227b98c28932e953076b8e20000000000fdffffff02ac150700000000001600147e3ddfe6232e448a8390f3073c7a3b2044fd17eb102908000000000016001427fbe3707bc57e5bb63d6f15733ec88626d8188a02473044022049ce9efbab88808720aa563e2d9bc40226389ab459c4390ea3e89465665d593502206c1c7c30a2f640af1e463e5107ee4cfc0ee22664cfae3f2606a95303b54cdef80121026269e54d06f7070c1f967eb2874ba60de550dfc327a945c98eb773672d9411fd77181e00')
funding_txid = funding_tx.txid()
self.assertEqual('ede61d39e501d65ccf34e6300da439419c43393f793bb9a8a4b06b2d0d80a8a0', funding_txid)
wallet.receive_tx_callback(funding_txid, funding_tx, TX_HEIGHT_UNCONFIRMED)
cmds = Commands(config=self.config)
tx_str = cmds._run(
'payto', (),
destination="tltc1qsyzgpwa0vg2940u5t6l97etuvedr5dejcp84ad",
amount="0.00123456",
feerate=50,
locktime=1972344,
wallet=wallet)
tx = tx_from_any(tx_str)
self.assertEqual(2, len(tx.outputs()))
txout = TxOutput.from_address_and_value("tltc1qsyzgpwa0vg2940u5t6l97etuvedr5dejcp84ad", 123456)
self.assertTrue(txout in tx.outputs())
self.assertEqual("02000000000101a0a8800d2d6bb0a4a8b93b793f39439c4139a40d30e634cf5cd601e5391de6ed0100000000fdffffff0240e2010000000000160014810480bbaf62145abf945ebe5f657c665a3a3732462b060000000000160014a5103285eb519f826520a9f7d3227e1eaa7ec5f802473044022057a6f4b1ec63336c7d0ba233e785ec9f2e2d9c2d67617a50e069f4498ee6a3b7022032fb331e0bef06f46e9cb77bfe94413142653c4912516835e941fa7f170c1a53012103001b55f19541faaf7e6d57dd1bdb9fdc37725fc500e12f2418cc11e0aed4154978181e00",
tx_str)
def input_script(self, txin, estimate_size=False):
if txin['type'] == 'p2pkh':
return Transaction.get_preimage_script(txin)
if txin['type'] == 'p2sh':
return '00' + push_script(
Transaction.get_preimage_script(txin))
raise Exception("unsupported type %s" % txin['type'])
def on_qr(self, data):
from electrum_ltc.bitcoin import base_decode, is_address
data = data.strip()
if is_address(data):
self.set_URI(data)
return
if data.startswith('litecoin:'):
self.set_URI(data)
return
if data.startswith('ln'):
self.set_ln_invoice(data)
return
# try to decode transaction
from electrum_ltc.transaction import Transaction
from electrum_ltc.util import bh2u
try:
text = bh2u(base_decode(data, None, base=43))
tx = Transaction(text)
tx.deserialize()
except:
tx = None
if tx:
self.tx_dialog(tx)
return
# show error
self.show_error("Unable to decode QR data")
def merge_sigs_from_psbt(tx: Transaction, psbt: BasicPSBT):
# Take new signatures from PSBT, and merge into in-memory transaction object.
# - "we trust everyone here" ... no validation/checks
count = 0
for inp_idx, inp in enumerate(psbt.inputs):
if not inp.part_sigs:
continue
scr = inp.redeem_script or inp.witness_script
# need to map from pubkey to signing position in redeem script
M, N, _, pubkeys, _ = parse_redeemScript_multisig(scr)
#assert (M, N) == (wallet.m, wallet.n)
for sig_pk in inp.part_sigs:
pk_pos = pubkeys.index(sig_pk.hex())
tx.add_signature_to_txin(inp_idx, pk_pos, inp.part_sigs[sig_pk].hex())
count += 1
#print("#%d: sigs = %r" % (inp_idx, tx.inputs()[inp_idx]['signatures']))
# reset serialization of TX
tx.raw = tx.serialize()
tx.raw_psbt = None
return count
def input_script(self, txin, estimate_size=False):
if txin['type'] == 'p2pkh':
return Transaction.get_preimage_script(txin)
if txin['type'] == 'p2sh':
# Multisig verification has partial support, but is disabled. This is the
# expected serialization though, so we leave it here until we activate it.
return '00' + push_script(Transaction.get_preimage_script(txin))
raise Exception("unsupported type %s" % txin['type'])
def input_script(self, txin, estimate_size=False):
if txin['type'] == 'p2pkh':
return Transaction.get_preimage_script(txin)
if txin['type'] == 'p2sh':
# Multisig verification has partial support, but is disabled. This is the
# expected serialization though, so we leave it here until we activate it.
return '00' + push_script(Transaction.get_preimage_script(txin))
raise Exception("unsupported type %s" % txin['type'])
def sign_transaction(self, tx: Transaction, password):
# Build a PSBT in memory, upload it for signing.
# - we can also work offline (without paired device present)
if tx.is_complete():
return
assert self.my_wallet, "Not clear which wallet associated with this Coldcard"
client = self.get_client()
assert client.dev.master_fingerprint == self.ckcc_xfp
# makes PSBT required
raw_psbt = build_psbt(tx, self.my_wallet)
cc_finalize = not (type(self.my_wallet) is Multisig_Wallet)
try:
try:
self.handler.show_message("Authorize Transaction...")
client.sign_transaction_start(raw_psbt, cc_finalize)
while 1:
# How to kill some time, without locking UI?
time.sleep(0.250)
resp = client.sign_transaction_poll()
if resp is not None:
break
rlen, rsha = resp
# download the resulting txn.
raw_resp = client.download_file(rlen, rsha)
finally:
self.handler.finished()
except (CCUserRefused, CCBusyError) as exc:
self.logger.info(f'Did not sign: {exc}')
self.handler.show_error(str(exc))
return
except BaseException as e:
self.logger.exception('')
self.give_error(e, True)
return
if cc_finalize:
# We trust the coldcard to re-serialize final transaction ready to go
tx.update(bh2u(raw_resp))
else:
# apply partial signatures back into txn
psbt = BasicPSBT()
psbt.parse(raw_resp, client.label())
merge_sigs_from_psbt(tx, psbt)
def parse(self, raw, filename=None):
# auto-detect and decode Base64 and Hex.
if raw[0:10].lower() == b'70736274ff':
raw = a2b_hex(raw.strip())
if raw[0:6] == b'cHNidP':
raw = b64decode(raw)
assert raw[0:5] == b'psbt\xff', "bad magic"
self.filename = filename
with io.BytesIO(raw[5:]) as fd:
# globals
while 1:
ks = deser_compact_size(fd)
if ks is None: break
if ks == 0: break
key = fd.read(ks)
vs = deser_compact_size(fd)
val = fd.read(vs)
kt = key[0]
if kt == PSBT_GLOBAL_UNSIGNED_TX:
self.txn = val
self.parsed_txn = Transaction(val.hex())
num_ins = len(self.parsed_txn.inputs())
num_outs = len(self.parsed_txn.outputs())
elif kt == PSBT_GLOBAL_XPUB:
# key=(xpub) => val=(path)
self.xpubs.append((key, val))
else:
raise ValueError('unknown global key type: 0x%02x' % kt)
assert self.txn, 'missing reqd section'
self.inputs = [BasicPSBTInput(fd, idx) for idx in range(num_ins)]
self.outputs = [
BasicPSBTOutput(fd, idx) for idx in range(num_outs)
]
sep = fd.read(1)
assert sep == b''
return self
def show_address(self, sequence, txin_type):
client = self.get_client()
address_path = self.get_derivation()[2:] + "/%d/%d" % sequence
self.handler.show_message(_("Showing address ..."))
segwit = Transaction.is_segwit_inputtype(txin_type)
segwitNative = txin_type == 'p2wpkh'
try:
client.getWalletPublicKey(address_path,
showOnScreen=True,
segwit=segwit,
segwitNative=segwitNative)
except BTChipException as e:
if e.sw == 0x6985: # cancelled by user
pass
elif e.sw == 0x6982:
raise # pin lock. decorator will catch it
elif e.sw == 0x6b00: # hw.1 raises this
self.handler.show_error('{}\n{}\n{}'.format(
_('Error showing address') + ':', e,
_('Your device might not have support for this functionality.'
)))
else:
traceback.print_exc(file=sys.stderr)
self.handler.show_error(e)
except BaseException as e:
traceback.print_exc(file=sys.stderr)
self.handler.show_error(e)
finally:
self.handler.finished()
def cosigner_can_sign(self, tx: Transaction, cosigner_xpub: str) -> bool:
if not isinstance(tx, PartialTransaction):
return False
if tx.is_complete():
return False
# TODO this is broken currently as it assumes tx.xpubs
return cosigner_xpub in {bip32node.to_xpub() for bip32node in tx.xpubs}
def show_qr(self, *, tx: Transaction = None):
if tx is None:
tx = self.tx
tx = copy.deepcopy(tx) # make copy as we mutate tx
if isinstance(tx, PartialTransaction):
# this makes QR codes a lot smaller (or just possible in the first place!)
tx.convert_all_utxos_to_witness_utxos()
text = tx.serialize_as_bytes()
text = base_encode(text, base=43)
try:
self.main_window.show_qrcode(text, 'Transaction', parent=self)
except qrcode.exceptions.DataOverflowError:
self.show_error(_('Failed to display QR code.') + '\n' +
_('Transaction is too large in size.'))
except Exception as e:
self.show_error(_('Failed to display QR code.') + '\n' + repr(e))
def input_script(self,
txin: PartialTxInput,
*,
estimate_size=False):
if txin.script_type == 'p2pkh':
return Transaction.get_preimage_script(txin)
raise Exception("unsupported type %s" % txin.script_type)
def show_address(self, sequence, txin_type):
client = self.get_client()
address_path = self.get_derivation()[2:] + "/%d/%d"%sequence
self.handler.show_message(_("Showing address ..."))
segwit = Transaction.is_segwit_inputtype(txin_type)
segwitNative = txin_type == 'p2wpkh'
try:
client.getWalletPublicKey(address_path, showOnScreen=True, segwit=segwit, segwitNative=segwitNative)
except BTChipException as e:
if e.sw == 0x6985: # cancelled by user
pass
elif e.sw == 0x6982:
raise # pin lock. decorator will catch it
elif e.sw == 0x6b00: # hw.1 raises this
self.handler.show_error('{}\n{}\n{}'.format(
_('Error showing address') + ':',
e,
_('Your device might not have support for this functionality.')))
else:
traceback.print_exc(file=sys.stderr)
self.handler.show_error(e)
except BaseException as e:
traceback.print_exc(file=sys.stderr)
self.handler.show_error(e)
finally:
self.handler.finished()
def test_extract_commitment_number_from_tx(self):
raw_tx = "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"
tx = Transaction(raw_tx)
self.assertEqual(
commitment_number,
extract_ctn_from_tx(tx, 0, local_payment_basepoint,
remote_payment_basepoint))
def is_any_tx_output_on_change_branch(tx: Transaction) -> bool:
if not tx.output_info:
return False
for o in tx.outputs():
info = tx.output_info.get(o.address)
if info is not None:
return info.is_change
return False
def do_paste(self):
data = self.app._clipboard.paste()
if not data:
self.app.show_info(_("Clipboard is empty"))
return
# try to decode as transaction
try:
raw_tx = tx_from_str(data)
tx = Transaction(raw_tx)
tx.deserialize()
except:
tx = None
if tx:
self.app.tx_dialog(tx)
return
# try to decode as URI/address
self.set_URI(data)
def export_to_file(self, *, tx: Transaction = None):
if tx is None:
tx = self.tx
if isinstance(tx, PartialTransaction):
tx.finalize_psbt()
if tx.is_complete():
name = 'signed_%s' % (tx.txid()[0:8])
extension = 'txn'
default_filter = TRANSACTION_FILE_EXTENSION_FILTER_ONLY_COMPLETE_TX
else:
name = self.wallet.basename() + time.strftime('-%Y%m%d-%H%M')
extension = 'psbt'
default_filter = TRANSACTION_FILE_EXTENSION_FILTER_ONLY_PARTIAL_TX
name = f'{name}.{extension}'
fileName = self.main_window.getSaveFileName(
_("Select where to save your transaction"),
name,
TRANSACTION_FILE_EXTENSION_FILTER_SEPARATE,
default_extension=extension,
default_filter=default_filter)
if not fileName:
return
if tx.is_complete(): # network tx hex
with open(fileName, "w+") as f:
network_tx_hex = tx.serialize_to_network()
f.write(network_tx_hex + '\n')
else: # if partial: PSBT bytes
assert isinstance(tx, PartialTransaction)
with open(fileName, "wb+") as f:
f.write(tx.serialize_as_bytes())
self.show_message(_("Transaction exported successfully"))
self.saved = True
def export_to_file(self, *, tx: Transaction = None):
if tx is None:
tx = self.tx
if isinstance(tx, PartialTransaction):
tx.finalize_psbt()
if tx.is_complete():
name = 'signed_%s.txn' % (tx.txid()[0:8])
else:
name = self.wallet.basename() + time.strftime('-%Y%m%d-%H%M.psbt')
fileName = self.main_window.getSaveFileName(_("Select where to save your signed transaction"),
name,
TRANSACTION_FILE_EXTENSION_FILTER)
if not fileName:
return
if tx.is_complete(): # network tx hex
with open(fileName, "w+") as f:
network_tx_hex = tx.serialize_to_network()
f.write(network_tx_hex + '\n')
else: # if partial: PSBT bytes
assert isinstance(tx, PartialTransaction)
with open(fileName, "wb+") as f:
f.write(tx.serialize_as_bytes())
self.show_message(_("Transaction exported successfully"))
self.saved = True
def is_any_tx_output_on_change_branch(tx: Transaction):
if not tx.output_info:
return False
for o in tx.outputs():
info = tx.output_info.get(o.address)
if info is not None:
if info.address_index[0] == 1:
return True
return False
def get_input_tx(self, tx_hash):
# First look up an input transaction in the wallet where it
# will likely be. If co-signing a transaction it may not have
# all the input txs, in which case we ask the network.
tx = self.transactions.get(tx_hash)
if not tx:
request = ('blockchain.transaction.get', [tx_hash])
# FIXME: what if offline?
tx = Transaction(self.network.synchronous_get(request))
return tx
def show_qr(self, *, tx: Transaction = None):
if tx is None:
tx = self.tx
qr_data = tx.to_qr_data()
try:
self.main_window.show_qrcode(qr_data, 'Transaction', parent=self)
except qrcode.exceptions.DataOverflowError:
self.show_error(
_('Failed to display QR code.') + '\n' +
_('Transaction is too large in size.'))
except Exception as e:
self.show_error(_('Failed to display QR code.') + '\n' + repr(e))
def sign_transaction(self, tx, password):
if tx.is_complete():
return
# previous transactions used as inputs
prev_tx = {}
for txin in tx.inputs():
tx_hash = txin.prevout.txid.hex()
if txin.utxo is None and not Transaction.is_segwit_input(txin):
raise UserFacingException(_('Missing previous tx for legacy input.'))
prev_tx[tx_hash] = txin.utxo
self.plugin.sign_transaction(self, tx, prev_tx)
def on_qr(self, data):
from electrum_ltc.bitcoin import base_decode, is_address
data = data.strip()
if is_address(data):
self.set_URI(data)
return
if data.startswith('litecoin:'):
self.set_URI(data)
return
# try to decode transaction
from electrum_ltc.transaction import Transaction
try:
text = base_decode(data, None, base=43).encode('hex')
tx = Transaction(text)
tx.deserialize()
except:
tx = None
if tx:
self.tx_dialog(tx)
return
# show error
self.show_error("Unable to decode QR data")
def tx_outputs(self, derivation, tx: Transaction):
def create_output_by_derivation():
script_type = self.get_trezor_output_script_type(info.script_type)
deriv = parse_path("/%d/%d" % index)
multisig = self._make_multisig(m,
[(xpub, deriv) for xpub in xpubs])
txoutputtype = TxOutputType(multisig=multisig,
amount=amount,
address_n=parse_path(derivation +
"/%d/%d" % index),
script_type=script_type)
return txoutputtype
def create_output_by_address():
txoutputtype = TxOutputType()
txoutputtype.amount = amount
if _type == TYPE_SCRIPT:
txoutputtype.script_type = OutputScriptType.PAYTOOPRETURN
txoutputtype.op_return_data = trezor_validate_op_return_output_and_get_data(
o)
elif _type == TYPE_ADDRESS:
txoutputtype.script_type = OutputScriptType.PAYTOADDRESS
txoutputtype.address = address
return txoutputtype
outputs = []
has_change = False
any_output_on_change_branch = is_any_tx_output_on_change_branch(tx)
for o in tx.outputs():
_type, address, amount = o.type, o.address, o.value
use_create_by_derivation = False
info = tx.output_info.get(address)
if info is not None and not has_change:
index, xpubs, m = info.address_index, info.sorted_xpubs, info.num_sig
# prioritise hiding outputs on the 'change' branch from user
# because no more than one change address allowed
# note: ^ restriction can be removed once we require fw
# that has https://github.com/trezor/trezor-mcu/pull/306
if info.is_change == any_output_on_change_branch:
use_create_by_derivation = True
has_change = True
if use_create_by_derivation:
txoutputtype = create_output_by_derivation()
else:
txoutputtype = create_output_by_address()
outputs.append(txoutputtype)
return outputs
def do_paste(self):
data = self.app._clipboard.paste().strip()
if not data:
self.app.show_info(_("Clipboard is empty"))
return
# try to decode as transaction
try:
raw_tx = tx_from_str(data)
tx = Transaction(raw_tx)
tx.deserialize()
except:
tx = None
if tx:
self.app.tx_dialog(tx)
return
lower = data.lower()
if lower.startswith('lightning:ln'):
lower = lower[10:]
# try to decode as URI/address
if lower.startswith('ln'):
self.set_ln_invoice(lower)
else:
self.set_URI(data)
def tx_inputs(self,
tx: Transaction,
*,
for_sig=False,
keystore: 'KeepKey_KeyStore' = None):
inputs = []
for txin in tx.inputs():
txinputtype = self.types.TxInputType()
if txin.is_coinbase():
prev_hash = b"\x00" * 32
prev_index = 0xffffffff # signed int -1
else:
if for_sig:
assert isinstance(tx, PartialTransaction)
assert isinstance(txin, PartialTxInput)
assert keystore
if len(txin.pubkeys) > 1:
xpubs_and_deriv_suffixes = get_xpubs_and_der_suffixes_from_txinout(
tx, txin)
multisig = self._make_multisig(
txin.num_sig, xpubs_and_deriv_suffixes)
else:
multisig = None
script_type = self.get_keepkey_input_script_type(
txin.script_type)
txinputtype = self.types.TxInputType(
script_type=script_type, multisig=multisig)
my_pubkey, full_path = keystore.find_my_pubkey_in_txinout(
txin)
if full_path:
txinputtype.address_n.extend(full_path)
prev_hash = txin.prevout.txid
prev_index = txin.prevout.out_idx
if txin.value_sats() is not None:
txinputtype.amount = txin.value_sats()
txinputtype.prev_hash = prev_hash
txinputtype.prev_index = prev_index
if txin.script_sig is not None:
txinputtype.script_sig = txin.script_sig
txinputtype.sequence = txin.nsequence
inputs.append(txinputtype)
return inputs
def on_qr(self, data):
if data.startswith('litecoin:'):
self.set_URI(data)
return
# try to decode transaction
from electrum_ltc.bitcoin import base_decode
from electrum_ltc.transaction import Transaction
try:
text = base_decode(data, None, base=43).encode('hex')
tx = Transaction(text)
except:
tx = None
if tx:
self.tx_dialog(tx)
return
# show error
self.show_error("Unable to decode QR data")
def sign_transaction(self, tx, password):
if tx.is_complete():
return
# previous transactions used as inputs
prev_tx = {}
# path of the xpubs that are involved
xpub_path = {}
for txin in tx.inputs():
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
tx_hash = txin['prevout_hash']
if txin.get('prev_tx') is None and not Transaction.is_segwit_input(txin):
raise UserFacingException(_('Offline signing with {} is not supported for legacy inputs.').format(self.device))
prev_tx[tx_hash] = txin['prev_tx']
for x_pubkey in x_pubkeys:
if not is_xpubkey(x_pubkey):
continue
xpub, s = parse_xpubkey(x_pubkey)
if xpub == self.get_master_public_key():
xpub_path[xpub] = self.get_derivation()
self.plugin.sign_transaction(self, tx, prev_tx, xpub_path)
def sign_transaction(self, tx, password):
if tx.is_complete():
return
# previous transactions used as inputs
prev_tx = {}
# path of the xpubs that are involved
xpub_path = {}
for txin in tx.inputs():
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
tx_hash = txin['prevout_hash']
if txin.get('prev_tx') is None and not Transaction.is_segwit_input(txin):
raise UserFacingException(_('Offline signing with {} is not supported for legacy inputs.').format(self.device))
prev_tx[tx_hash] = txin['prev_tx']
for x_pubkey in x_pubkeys:
if not is_xpubkey(x_pubkey):
continue
xpub, s = parse_xpubkey(x_pubkey)
if xpub == self.get_master_public_key():
xpub_path[xpub] = self.get_derivation()
self.plugin.sign_transaction(self, tx, prev_tx, xpub_path)
def show_address(self, sequence, txin_type):
self.signing = True
client = self.get_client()
address_path = self.get_derivation()[2:] + "/%d/%d"%sequence
self.handler.show_message(_("Showing address ..."))
segwit = Transaction.is_segwit_inputtype(txin_type)
segwitNative = txin_type == 'p2wpkh'
try:
client.getWalletPublicKey(address_path, showOnScreen=True, segwit=segwit, segwitNative=segwitNative)
except BTChipException as e:
if e.sw == 0x6985: # cancelled by user
pass
else:
traceback.print_exc(file=sys.stderr)
self.handler.show_error(e)
except BaseException as e:
traceback.print_exc(file=sys.stderr)
self.handler.show_error(e)
finally:
self.handler.finished()
self.signing = False
def __init__(self, chan: Channel, app: 'ElectrumWindow', **kwargs):
Popup.__init__(self, **kwargs)
Logger.__init__(self)
self.is_closed = chan.is_closed()
self.can_be_deleted = chan.can_be_deleted()
self.app = app
self.chan = chan
self.title = _('Channel details')
self.node_id = bh2u(chan.node_id)
self.channel_id = bh2u(chan.channel_id)
self.funding_txid = chan.funding_outpoint.txid
self.short_id = format_short_channel_id(chan.short_channel_id)
self.capacity = self.app.format_amount_and_units(chan.get_capacity())
self.state = chan.get_state_for_GUI()
self.local_ctn = chan.get_latest_ctn(LOCAL)
self.remote_ctn = chan.get_latest_ctn(REMOTE)
self.local_csv = chan.config[LOCAL].to_self_delay
self.remote_csv = chan.config[REMOTE].to_self_delay
self.initiator = 'Local' if chan.constraints.is_initiator else 'Remote'
feerate_kw = chan.get_latest_feerate(LOCAL)
self.feerate = str(
quantize_feerate(Transaction.satperbyte_from_satperkw(feerate_kw)))
self.can_send = self.app.format_amount_and_units(
chan.available_to_spend(LOCAL) // 1000)
self.can_receive = self.app.format_amount_and_units(
chan.available_to_spend(REMOTE) // 1000)
self.is_open = chan.is_open()
closed = chan.get_closing_height()
if closed:
self.closing_txid, closing_height, closing_timestamp = closed
msg = messages.MSG_NON_TRAMPOLINE_CHANNEL_FROZEN_WITHOUT_GOSSIP
self.warning = '' if self.app.wallet.lnworker.channel_db or self.app.wallet.lnworker.is_trampoline_peer(
chan.node_id) else _('Warning') + ': ' + msg
self.is_frozen_for_sending = chan.is_frozen_for_sending()
self.is_frozen_for_receiving = chan.is_frozen_for_receiving()
self.update_action_dropdown()
def export_to_file(self, *, tx: Transaction = None):
if tx is None:
tx = self.tx
if isinstance(tx, PartialTransaction):
tx.finalize_psbt()
txid = tx.txid()
suffix = txid[0:8] if txid is not None else time.strftime(
'%Y%m%d-%H%M')
if tx.is_complete():
extension = 'txn'
default_filter = TRANSACTION_FILE_EXTENSION_FILTER_ONLY_COMPLETE_TX
else:
extension = 'psbt'
default_filter = TRANSACTION_FILE_EXTENSION_FILTER_ONLY_PARTIAL_TX
name = f'{self.wallet.basename()}-{suffix}.{extension}'
fileName = getSaveFileName(
parent=self,
title=_("Select where to save your transaction"),
filename=name,
filter=TRANSACTION_FILE_EXTENSION_FILTER_SEPARATE,
default_extension=extension,
default_filter=default_filter,
config=self.config,
)
if not fileName:
return
if tx.is_complete(): # network tx hex
with open(fileName, "w+") as f:
network_tx_hex = tx.serialize_to_network()
f.write(network_tx_hex + '\n')
else: # if partial: PSBT bytes
assert isinstance(tx, PartialTransaction)
with open(fileName, "wb+") as f:
f.write(tx.serialize_as_bytes())
self.show_message(_("Transaction exported successfully"))
self.saved = True
def recover_tx_from_psbt(first: BasicPSBT, wallet: Abstract_Wallet) -> Transaction:
# Take a PSBT object and re-construct the Electrum transaction object.
# - does not include signatures, see merge_sigs_from_psbt
# - any PSBT in the group could be used for this purpose; all must share tx details
tx = Transaction(first.txn.hex())
tx.deserialize(force_full_parse=True)
# .. add back some data that's been preserved in the PSBT, but isn't part of
# of the unsigned bitcoin txn
tx.is_partial_originally = True
for idx, inp in enumerate(tx.inputs()):
scr = first.inputs[idx].redeem_script or first.inputs[idx].witness_script
# XXX should use transaction.py parse_scriptSig() here!
if scr:
try:
M, N, __, pubkeys, __ = parse_redeemScript_multisig(scr)
except NotRecognizedRedeemScript:
# limitation: we can only handle M-of-N multisig here
raise ValueError("Cannot handle non M-of-N multisig input")
inp['pubkeys'] = pubkeys
inp['x_pubkeys'] = pubkeys
inp['num_sig'] = M
inp['type'] = 'p2wsh' if first.inputs[idx].witness_script else 'p2sh'
# bugfix: transaction.py:parse_input() puts empty dict here, but need a list
inp['signatures'] = [None] * N
if 'prev_tx' not in inp:
# fetch info about inputs' previous txn
wallet.add_hw_info(tx)
if 'value' not in inp:
# we'll need to know the value of the outpts used as part
# of the witness data, much later...
inp['value'] = inp['prev_tx'].outputs()[inp['prevout_n']].value
return tx
def sign_transaction(self, tx, password):
if tx.is_complete():
return
client = self.get_client()
inputs = []
inputsPaths = []
pubKeys = []
chipInputs = []
redeemScripts = []
signatures = []
changePath = ""
output = None
p2shTransaction = False
segwitTransaction = 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
if txin['type'] in ['p2wpkh-p2sh', 'p2wsh-p2sh']:
if not self.get_client_electrum().supports_segwit():
self.give_error(MSG_NEEDS_FW_UPDATE_SEGWIT)
segwitTransaction = True
if txin['type'] in ['p2wpkh', 'p2wsh']:
if not self.get_client_electrum().supports_native_segwit():
self.give_error(MSG_NEEDS_FW_UPDATE_SEGWIT)
segwitTransaction = 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
redeemScript = Transaction.get_preimage_script(txin)
txin_prev_tx = txin.get('prev_tx')
if txin_prev_tx is None and not Transaction.is_segwit_input(txin):
raise UserFacingException(_('Offline signing with {} is not supported for legacy inputs.').format(self.device))
txin_prev_tx_raw = txin_prev_tx.raw if txin_prev_tx else None
inputs.append([txin_prev_tx_raw,
txin['prevout_n'],
redeemScript,
txin['prevout_hash'],
signingPos,
txin.get('sequence', 0xffffffff - 1),
txin.get('value')])
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 o in tx.outputs():
output_type, addr, amount = o.type, o.address, o.value
txOutput += int_to_hex(amount, 8)
script = tx.pay_script(output_type, addr)
txOutput += var_int(len(script)//2)
txOutput += script
txOutput = bfh(txOutput)
# Recognize outputs
# - only one output and one change is authorized (for hw.1 and nano)
# - at most one output can bypass confirmation (~change) (for all)
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")
has_change = False
any_output_on_change_branch = is_any_tx_output_on_change_branch(tx)
for o in tx.outputs():
assert o.type == TYPE_ADDRESS
info = tx.output_info.get(o.address)
if (info is not None) and len(tx.outputs()) > 1 \
and not has_change:
index = info.address_index
on_change_branch = index[0] == 1
# prioritise hiding outputs on the 'change' branch from user
# because no more than one change address allowed
if on_change_branch == any_output_on_change_branch:
changePath = self.get_derivation()[2:] + "/%d/%d"%index
has_change = True
else:
output = o.address
else:
output = o.address
self.handler.show_message(_("Confirm Transaction on your Ledger device..."))
try:
# Get trusted inputs from the original transactions
for utxo in inputs:
sequence = int_to_hex(utxo[5], 4)
if segwitTransaction:
tmp = bfh(utxo[3])[::-1]
tmp += bfh(int_to_hex(utxo[1], 4))
tmp += bfh(int_to_hex(utxo[6], 8)) # txin['value']
chipInputs.append({'value' : tmp, 'witness' : True, 'sequence' : sequence})
redeemScripts.append(bfh(utxo[2]))
elif not p2shTransaction:
txtmp = bitcoinTransaction(bfh(utxo[0]))
trustedInput = self.get_client().getTrustedInput(txtmp, utxo[1])
trustedInput['sequence'] = sequence
chipInputs.append(trustedInput)
redeemScripts.append(txtmp.outputs[utxo[1]].script)
else:
tmp = bfh(utxo[3])[::-1]
tmp += bfh(int_to_hex(utxo[1], 4))
chipInputs.append({'value' : tmp, 'sequence' : sequence})
redeemScripts.append(bfh(utxo[2]))
# Sign all inputs
firstTransaction = True
inputIndex = 0
rawTx = tx.serialize_to_network()
self.get_client().enableAlternate2fa(False)
if segwitTransaction:
self.get_client().startUntrustedTransaction(True, inputIndex,
chipInputs, redeemScripts[inputIndex], version=tx.version)
# we don't set meaningful outputAddress, amount and fees
# as we only care about the alternateEncoding==True branch
outputData = self.get_client().finalizeInput(b'', 0, 0, changePath, bfh(rawTx))
outputData['outputData'] = txOutput
if outputData['confirmationNeeded']:
outputData['address'] = output
self.handler.finished()
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..."))
while inputIndex < len(inputs):
singleInput = [ chipInputs[inputIndex] ]
self.get_client().startUntrustedTransaction(False, 0,
singleInput, redeemScripts[inputIndex], version=tx.version)
inputSignature = self.get_client().untrustedHashSign(inputsPaths[inputIndex], pin, lockTime=tx.locktime)
inputSignature[0] = 0x30 # force for 1.4.9+
signatures.append(inputSignature)
inputIndex = inputIndex + 1
else:
while inputIndex < len(inputs):
self.get_client().startUntrustedTransaction(firstTransaction, inputIndex,
chipInputs, redeemScripts[inputIndex], version=tx.version)
# we don't set meaningful outputAddress, amount and fees
# as we only care about the alternateEncoding==True branch
outputData = self.get_client().finalizeInput(b'', 0, 0, changePath, bfh(rawTx))
outputData['outputData'] = txOutput
if outputData['confirmationNeeded']:
outputData['address'] = output
self.handler.finished()
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, lockTime=tx.locktime)
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 BTChipException as e:
if e.sw == 0x6985: # cancelled by user
return
elif e.sw == 0x6982:
raise # pin lock. decorator will catch it
else:
traceback.print_exc(file=sys.stderr)
self.give_error(e, True)
except BaseException as e:
traceback.print_exc(file=sys.stdout)
self.give_error(e, True)
finally:
self.handler.finished()
for i, txin in enumerate(tx.inputs()):
signingPos = inputs[i][4]
tx.add_signature_to_txin(i, signingPos, bh2u(signatures[i]))
tx.raw = tx.serialize()
from electrum_ltc.transaction import Transaction
from electrum_ltc import paymentrequest
from electrum_ltc import paymentrequest_pb2 as pb2
chain_file = 'mychain.pem'
cert_file = 'mycert.pem'
amount = 1000000
address = "LSh322VzYj7CCSwQJXrP49Lvt2zktLjQbz"
memo = "blah"
out_file = "payreq"
with open(chain_file, 'r') as f:
chain = tlslite.X509CertChain()
chain.parsePemList(f.read())
certificates = pb2.X509Certificates()
certificates.certificate.extend(map(lambda x: str(x.bytes), chain.x509List))
with open(cert_file, 'r') as f:
rsakey = tlslite.utils.python_rsakey.Python_RSAKey.parsePEM(f.read())
script = Transaction.pay_script('address', address).decode('hex')
pr_string = paymentrequest.make_payment_request(amount, script, memo, rsakey)
with open(out_file, 'wb') as f:
f.write(pr_string)
print("Payment request was written to file '%s'" % out_file)
def main(self):
add_menu()
welcome = 'Use the menu to scan a transaction.'
droid.fullShow(qr_layout(welcome))
while True:
event = droid.eventWait().result
if not event:
continue
elif event["name"] == "key":
if event["data"]["key"] == '4':
if self.qr_data:
self.show_qr(None)
self.show_title(welcome)
else:
break
elif event["name"] == "seed":
password = self.get_password()
if password is False:
modal_dialog('Error','incorrect password')
continue
seed = wallet.get_mnemonic(password)
modal_dialog('Your seed is', seed)
elif event["name"] == "password":
self.change_password_dialog()
elif event["name"] == "xpub":
mpk = wallet.get_master_public_key()
self.show_qr(mpk)
self.show_title('master public key')
elif event["name"] == "scan":
r = droid.scanBarcode()
r = r.result
if not r:
continue
data = r['extras']['SCAN_RESULT']
data = base_decode(data.encode('utf8'), None, base=43)
data = ''.join(chr(ord(b)) for b in data).encode('hex')
tx = Transaction(data)
#except:
# modal_dialog('Error', 'Cannot parse transaction')
# continue
if not wallet.can_sign(tx):
modal_dialog('Error', 'Cannot sign this transaction')
continue
lines = map(lambda x: x[0] + u'\t\t' + format_satoshis(x[1]) if x[1] else x[0], tx.get_outputs())
if not modal_question('Sign?', '\n'.join(lines)):
continue
password = self.get_password()
if password is False:
modal_dialog('Error','incorrect password')
continue
droid.dialogCreateSpinnerProgress("Signing")
droid.dialogShow()
wallet.sign_transaction(tx, password)
droid.dialogDismiss()
data = base_encode(str(tx).decode('hex'), base=43)
self.show_qr(data)
self.show_title('Signed Transaction')
droid.makeToast("Bye!")
def build_psbt(self, tx: Transaction, wallet=None, xfp=None):
# Render a PSBT file, for upload to Coldcard.
#
if xfp is None:
# need fingerprint of MASTER xpub, not the derived key
xfp = self.ckcc_xfp
inputs = tx.inputs()
if 'prev_tx' not in inputs[0]:
# fetch info about inputs, if needed?
# - needed during export PSBT flow, not normal online signing
assert wallet, 'need wallet reference'
wallet.add_hw_info(tx)
# wallet.add_hw_info installs this attr
assert tx.output_info is not None, 'need data about outputs'
# Build map of pubkey needed as derivation from master, in PSBT binary format
# 1) binary version of the common subpath for all keys
# m/ => fingerprint LE32
# a/b/c => ints
base_path = pack('<I', xfp)
for x in self.get_derivation()[2:].split('/'):
if x.endswith("'"):
x = int(x[:-1]) | 0x80000000
else:
x = int(x)
base_path += pack('<I', x)
# 2) all used keys in transaction
subkeys = {}
derivations = self.get_tx_derivations(tx)
for xpubkey in derivations:
pubkey = xpubkey_to_pubkey(xpubkey)
# assuming depth two, non-harded: change + index
aa, bb = derivations[xpubkey]
assert 0 <= aa < 0x80000000
assert 0 <= bb < 0x80000000
subkeys[bfh(pubkey)] = base_path + pack('<II', aa, bb)
for txin in inputs:
if txin['type'] == 'coinbase':
self.give_error("Coinbase not supported")
if txin['type'] in ['p2sh', 'p2wsh-p2sh', 'p2wsh']:
self.give_error('No support yet for inputs of type: ' + txin['type'])
# Construct PSBT from start to finish.
out_fd = io.BytesIO()
out_fd.write(b'psbt\xff')
def write_kv(ktype, val, key=b''):
# serialize helper: write w/ size and key byte
out_fd.write(my_var_int(1 + len(key)))
out_fd.write(bytes([ktype]) + key)
if isinstance(val, str):
val = bfh(val)
out_fd.write(my_var_int(len(val)))
out_fd.write(val)
# global section: just the unsigned txn
class CustomTXSerialization(Transaction):
@classmethod
def input_script(cls, txin, estimate_size=False):
return ''
unsigned = bfh(CustomTXSerialization(tx.serialize()).serialize_to_network(witness=False))
write_kv(PSBT_GLOBAL_UNSIGNED_TX, unsigned)
# end globals section
out_fd.write(b'\x00')
# inputs section
for txin in inputs:
if Transaction.is_segwit_input(txin):
utxo = txin['prev_tx'].outputs()[txin['prevout_n']]
spendable = txin['prev_tx'].serialize_output(utxo)
write_kv(PSBT_IN_WITNESS_UTXO, spendable)
else:
write_kv(PSBT_IN_NON_WITNESS_UTXO, str(txin['prev_tx']))
pubkeys, x_pubkeys = tx.get_sorted_pubkeys(txin)
pubkeys = [bfh(k) for k in pubkeys]
for k in pubkeys:
write_kv(PSBT_IN_BIP32_DERIVATION, subkeys[k], k)
if txin['type'] == 'p2wpkh-p2sh':
assert len(pubkeys) == 1, 'can be only one redeem script per input'
pa = hash_160(k)
assert len(pa) == 20
write_kv(PSBT_IN_REDEEM_SCRIPT, b'\x00\x14'+pa)
out_fd.write(b'\x00')
# outputs section
for o in tx.outputs():
# can be empty, but must be present, and helpful to show change inputs
# wallet.add_hw_info() adds some data about change outputs into tx.output_info
if o.address in tx.output_info:
# this address "is_mine" but might not be change (I like to sent to myself)
output_info = tx.output_info.get(o.address)
index, xpubs = output_info.address_index, output_info.sorted_xpubs
if index[0] == 1 and len(index) == 2:
# it is a change output (based on our standard derivation path)
assert len(xpubs) == 1 # not expecting multisig
xpubkey = xpubs[0]
# document its bip32 derivation in output section
aa, bb = index
assert 0 <= aa < 0x80000000
assert 0 <= bb < 0x80000000
deriv = base_path + pack('<II', aa, bb)
pubkey = bfh(self.get_pubkey_from_xpub(xpubkey, index))
write_kv(PSBT_OUT_BIP32_DERIVATION, deriv, pubkey)
if output_info.script_type == 'p2wpkh-p2sh':
pa = hash_160(pubkey)
assert len(pa) == 20
write_kv(PSBT_OUT_REDEEM_SCRIPT, b'\x00\x14' + pa)
out_fd.write(b'\x00')
return out_fd.getvalue()
from electrum_ltc.transaction import Transaction
from electrum_ltc import paymentrequest
from electrum_ltc import paymentrequest_pb2 as pb2
chain_file = 'mychain.pem'
cert_file = 'mycert.pem'
amount = 1000000
address = "LSh322VzYj7CCSwQJXrP49Lvt2zktLjQbz"
memo = "blah"
out_file = "payreq"
with open(chain_file, 'r') as f:
chain = tlslite.X509CertChain()
chain.parsePemList(f.read())
certificates = pb2.X509Certificates()
certificates.certificate.extend(map(lambda x: str(x.bytes), chain.x509List))
with open(cert_file, 'r') as f:
rsakey = tlslite.utils.python_rsakey.Python_RSAKey.parsePEM(f.read())
script = Transaction.pay_script('address', address).decode('hex')
pr_string = paymentrequest.make_payment_request(amount, script, memo, rsakey)
with open(out_file,'wb') as f:
f.write(pr_string)
print("Payment request was written to file '%s'"%out_file)
