def reconstruct_composed_tx_spec(model, tx):
if isinstance(tx, str):
tx = deserialize(tx)
if not isinstance(tx, Tx):
raise Exception('Tx is neiether string nor pycoin.tx.Tx!')
pycoin_tx = tx
composed_tx_spec = txspec.ComposedTxSpec(None)
for py_txin in pycoin_tx.txs_in:
# lookup the previous hash and generate the utxo
in_txhash, in_outindex = py_txin.previous_hash, py_txin.previous_index
in_txhash = in_txhash[::-1].encode('hex')
composed_tx_spec.add_txin(
txspec.ComposedTxSpec.TxIn(in_txhash, in_outindex))
# in_tx = ccc.blockchain_state.get_tx(in_txhash)
# value = in_tx.outputs[in_outindex].value
# raw_address = script_to_raw_address(py_txin.script)
# address = ccc.raw_to_address(raw_address)
for py_txout in pycoin_tx.txs_out:
script = py_txout.script
raw_address = script_to_raw_address(script)
if raw_address:
address = model.ccc.raw_to_address(raw_address)
else:
address = None
composed_tx_spec.add_txout(
txspec.ComposedTxSpec.TxOut(py_txout.coin_value, address))
return composed_tx_spec
def fake_transaction(model=MockModel()):
key = "5Kb8kLf9zgWQnogidDA76MzPL6TsZZY36hWXMssSzNydYXYB9KF"
address = LooseAddressRecord(address_data=key)
script = tools.compile(
"OP_DUP OP_HASH160 {0} OP_EQUALVERIFY OP_CHECKSIG".format(
address.rawPubkey().encode("hex"))).encode("hex")
txin = utxodb.UTXO("D34DB33F", 0, 1, script)
txin.address_rec = address
txout = txspec.ComposedTxSpec.TxOut(1, address.get_address())
composed = txspec.ComposedTxSpec([txin], [txout])
return txcons.RawTxSpec.from_composed_tx_spec(model, composed), address
def compose_uncolored_tx_spec(tx_spec):
targets = tx_spec.get_targets()
ttotal = sum([target[2] for target in targets])
fee = tx_spec.get_required_fee(500)
sel_utxos, sum_sel_coins = tx_spec.select_coins(0, ttotal + fee)
txins = [txspec.ComposedTxSpec.TxIn(utxo) for utxo in sel_utxos]
change = sum_sel_coins - ttotal - fee
txouts = [
txspec.ComposedTxSpec.TxOut(target[2], target[0]) for target in targets
]
if change > 0:
outputs.append(
txspec.ComposedTxSpec.TxOut(change, tx_spec.get_change_address(0)))
return txspec.ComposedTxSpec(txins, txouts)
def compose_uncolored_tx(tx_spec):
""" compose a simple bitcoin transaction """
targets = tx_spec.get_targets()
ttotal = sum([target[2] for target in targets])
fee = tx_spec.get_required_fee(500)
sel_utxos, sum_sel_coins = tx_spec.select_coins(colordef.UNCOLORED_MARKER,
ttotal + fee)
change = sum_sel_coins - ttotal - fee
txouts = [txspec.ComposedTxSpec.TxOut(target[2], target[0])
for target in targets]
# give ourselves the change
if change > 0:
txouts.append(
txspec.ComposedTxSpec.TxOut(
change, tx_spec.get_change_addr(colordef.UNCOLORED_MARKER)))
return txspec.ComposedTxSpec(sel_utxos, txouts)
def fake_transaction(model=None):
key = ecdsa.SigningKey.from_string(
"\xe8\x00\xb8\xd4\xa1b\xb7o\x0f;\xf2\xcf\xca\xfd\x1a$\xb9\xa9"
"\xeb\x0b\x08X\x9f}9C\xe4\x88\xfdD\x11b",
curve=ecdsa.curves.SECP256k1)
address = Address.fromPrivkey(key)
script = tools.compile(
"OP_DUP OP_HASH160 {0} OP_EQUALVERIFY OP_CHECKSIG".format(
address.rawPubkey()[1:-4].encode("hex"))).encode("hex")
utxo = utxodb.UTXO("D34DB33F", 0, 1, script)
utxo.address_rec = object()
utxo.address_rec = AddressRec(address)
txin = txspec.ComposedTxSpec.TxIn(utxo)
txout = txspec.ComposedTxSpec.TxOut(1, address.pubkey)
composed = txspec.ComposedTxSpec([txin], [txout])
return txcons.SignedTxSpec(model, composed, False), address