def spendables_for_address(self, address):
if address == "mgMy4vmqChGT8XeKPb1zD6RURWsiNmoNvR":
script = ScriptPayToAddress(
bitcoin_address_to_hash160_sec(address, address_prefix_for_netcode('XTN')))
return [Spendable(coin_value=10000,
script=script.script(),
tx_out_index=0, tx_hash=b'2'*32)]
else:
return []
def spendables_for_address(self, address):
if address == "mgMy4vmqChGT8XeKPb1zD6RURWsiNmoNvR":
script = ScriptPayToAddress(
bitcoin_address_to_hash160_sec(
address, address_prefix_for_netcode('XTN')))
return [
Spendable(coin_value=10000,
script=script.script(),
tx_out_index=0,
tx_hash=b'2' * 32)
]
else:
return []
def script_obj_from_address(address, netcodes=None):
netcode, key_type, data = netcode_and_type_for_text(address)
if key_type == 'pay_to_script':
return ScriptPayToScript(hash160=data)
if key_type == 'address':
return ScriptPayToAddress(hash160=data)
raise ValueError("bad text")
def decode_spendables(address, results):
spendables = [
Spendable(r['value'], ScriptPayToAddress(address),
h2b_rev(r['tx_hash']), r['tx_pos'])
for r in results['result']
]
return spendables
def spendables_for_addresses(self, addresses):
results = {}
for address in addresses:
if address == "mgMy4vmqChGT8XeKPb1zD6RURWsiNmoNvR":
results[address] =\
[Spendable(coin_value=10000,
script=ScriptPayToAddress(bitcoin_address_to_hash160_sec(address, address_prefix_for_netcode('XTN'))).script(),
tx_out_index=0, tx_hash=b'2'*32)]
return results
def script_obj_from_address(address, netcodes=None):
netcode, key_type, data = netcode_and_type_for_text(address, netcodes)
if key_type == 'pay_to_script':
return ScriptPayToScript(hash160=data)
if key_type == 'address':
return ScriptPayToAddress(hash160=data)
if key_type == 'address_wit':
return ScriptPayToAddressWit(version=data[:1], hash160=data[2:])
if key_type == 'pay_to_script_wit':
return ScriptPayToScriptWit(version=data[:1], hash256=data[2:])
raise ValueError("bad text")
def address_from_spend(self, spend):
script = None
""":type: ScriptType"""
try:
script = ScriptPayToScript.from_script(spend.script)
except Exception:
script = ScriptPayToAddress.from_script(spend.script)
# explicitly call info() because pycoin script.address(netcode) disregards the netcode
addr = script.info(self.netcode)['address']
return addr
def address_from_spend(self, spend):
script = None
""":type: ScriptType"""
try:
script = ScriptPayToScript.from_script(spend.script)
except Exception:
script = ScriptPayToAddress.from_script(spend.script)
# explicitly call info() because pycoin script.address(netcode) disregards the netcode
addr = script.info(self.netcode)['address']
return addr
def spendables_for_address(self, address):
if address == "1r1msgrPfqCMRAhg23cPBD9ZXH1UQ6jec":
return [
Spendable(
coin_value=10000,
script=ScriptPayToAddress(
bitcoin_address_to_hash160_sec(address)).script(),
tx_out_index=0,
tx_hash=b'2' * 32)
]
else:
return []
def create_change(self, address: str, existing_txouts, balance: int):
new_txouts = []
change_size = 100 * 1000000 # 100 coins
total_out = sum(txo.coin_value for txo in existing_txouts)
balance = balance - total_out
spendables = self.get_spendables(address, get_all=True)
# Prune out spendables that we will spend.
for spendable in spendables.copy():
if total_out == 0:
continue
if total_out < 0:
raise Exception(f"total_out is negative. ({total_out})")
if spendable.coin_value > total_out:
spendables.remove(spendable)
break
elif total_out > spendable.coin_value:
spendables.remove(spendable)
total_out -= spendable.coin_value
# XXX: Find a way to cleanly unify this.
_, _, address_hash160 = netcode_and_type_for_text(address)
# 15 TXs in our own wallet should be a good buffer to have.
if len(spendables) >= 15:
return []
# Create our payment to ourselves if we still have the coins.
if (balance - (change_size * len(spendables))) < change_size:
print("Warning: Low balance in address.")
balance -= (change_size * len(spendables))
for x in range(len(spendables), 50):
balance -= change_size
if balance < 0:
break
script_pay = ScriptPayToAddress(hash160=address_hash160).script()
new_txouts.append(TxOut(change_size, script_pay))
return new_txouts
def generate_addr_txouts(self, address_hash160, _payload, fee_needed):
txs_out = []
payload = io.BytesIO(_payload)
# XXX: constants file
payload_size = 20
# Create all the payments to the data addresses.
# Chunking from https://github.com/vilhelmgray/FamaMonetae/blob/master/famamonetae.py
while True:
chunk = payload.read(payload_size)
chunk_size = len(chunk)
# Break once our chunk is smaller than the payload size
if chunk_size < payload_size:
if chunk_size == 0:
break
chunk = chunk + (B'\x00') * (payload_size - chunk_size)
script_data = ScriptPayToAddress(hash160=chunk).script()
txs_out.append(TxOut(self.return_fee, script_data))
return txs_out
def round_change(self, address_hash160: str, txin_amount: int,
txout_amount, fee_needed: int):
total_payment = txin_amount - txout_amount - fee_needed
script_pay = ScriptPayToAddress(hash160=address_hash160).script()
return TxOut(total_payment, script_pay), total_payment
