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 = "02000000000101bef67e4e2fb9ddeeb3461973cd4c62abb35050b1add772995b820b584a488489000000000038b02b8007e80300000000000022002052bfef0479d7b293c27e0f1eb294bea154c63a3294ef092c19af51409bce0e2ad007000000000000220020403d394747cae42e98ff01734ad5c08f82ba123d3d9a620abda88989651e2ab5d007000000000000220020748eba944fedc8827f6b06bc44678f93c0f9e6078b35c6331ed31e75f8ce0c2db80b000000000000220020c20b5d1f8584fd90443e7b7b720136174fa4b9333c261d04dbbd012635c0f419a00f0000000000002200208c48d15160397c9731df9bc3b236656efb6665fbfe92b4a6878e88a499f741c4c0c62d0000000000160014ccf1af2f2aabee14bb40fa3851ab2301de843110e0a06a00000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e04004730440220275b0c325a5e9355650dc30c0eccfbc7efb23987c24b556b9dfdd40effca18d202206caceb2c067836c51f296740c7ae807ffcbfbf1dd3a0d56b6de9a5b247985f060147304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b7060601475221023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb21030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c152ae3e195220" 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)