def validateGAAddr(result, wallet):
if sys.version_info.major < 3:
addrscript = CScript(binascii.unhexlify(result['script']))
else:
addrscript = CScript(binascii.unhexlify(result['script']))
addrdata = [x for x in addrscript]
assert(len(addrdata) == 5)
if sys.version_info.major < 3:
secondpkh = binascii.hexlify(addrdata[2])
else:
secondpkh = binascii.hexlify(addrdata[2])
print("Second pubkey hash: %s" % secondpkh)
m = addrdata[0]
assert(m == 2)
n = addrdata[3]
assert(n==2)
assert(addrdata[4] == OP_CHECKMULTISIG)
hexsubkey = wallet.subkey(1).subkey(result['pointer']).public_copy().sec_as_hex()
if sys.version_info.major < 3:
addrfromapi = P2SHBitcoinAddress.from_redeemScript(CScript(binascii.unhexlify(result['script'])))
else:
addrfromapi = P2SHBitcoinAddress.from_redeemScript(CScript(binascii.unhexlify(result['script'])))
assert(hexsubkey == secondpkh.decode('utf8'))
return addrfromapi
def analyze_tx(tx_hex_string):
output = {}
# get op_return from transaction
hex = unhexlify(tx_hex_string)
deserializedTransaction = CTransaction.deserialize(hex)
op_return_vout = deserializedTransaction.vout[1].scriptPubKey
# get redeem script
redeem_script = ''
for i in op_return_vout:
script = bytes(i).decode('utf8')
if 'REDEEM' in script:
redeem_script_string = script.replace('REDEEM SCRIPT ', '')
output['redeemScript'] = redeem_script_string
# convert redeem script into list
redeemScript = CScript(unhexlify(redeem_script_string))
redeem_script_array = []
for i in redeemScript:
redeem_script_array.append(i)
# get redeem script hash (hodl address)
p2sh_address = P2SHBitcoinAddress.from_redeemScript(redeemScript)
output['hodlAddress'] = str(p2sh_address)
# get nlocktime from redeem script
nlocktime_hex = b2lx(redeem_script_array[0])
nlocktime = int(nlocktime_hex, 16)
output['nLockTime'] = nlocktime
# get authorized key from redeem script
pubkey = b2x(redeem_script_array[3])
# get address from authorized key
pubkey = unhexlify(pubkey)
P2PKHBitcoinAddress = bitcoin.wallet.P2PKHBitcoinAddress
addr = P2PKHBitcoinAddress.from_pubkey(pubkey)
output['authorizedAddress'] = str(addr)
# get total sent to hodl address
locked_satoshis = 0
for i in deserializedTransaction.vout:
if i.nValue > 0:
sPK = i.scriptPubKey
amount = i.nValue
try:
vout_p2sh_addr = P2SHBitcoinAddress.from_scriptPubKey(sPK)
# rewards only paid to really locked funds
if str(p2sh_address) == str(vout_p2sh_addr):
locked_satoshis += amount
except:
pass
output["lockedSatoshis"] = locked_satoshis
return (output)
def redeem_contract(self, contract, secret):
print("Parsing script for redeem_contract...")
scriptarray = self.parse_script(contract.redeemScript)
redeemblocknum = scriptarray[8]
self.redeemPubKey = P2PKHBitcoinAddress.from_bytes(x(scriptarray[6]))
# refundPubKey = P2PKHBitcoinAddress.from_bytes(x(scriptarray[13]))
p2sh = contract.p2sh
# checking there are funds in the address
amount = self.check_funds(p2sh)
if(amount == 0):
print("address ", p2sh, " not funded")
quit()
fundtx = self.find_transaction_to_address(p2sh)
amount = fundtx['amount'] / COIN
# print("Found fund_tx: ", fundtx)
p2sh = P2SHBitcoinAddress(p2sh)
if fundtx['address'] == p2sh:
print("Found {0} in p2sh {1}, redeeming...".format(amount, p2sh))
blockcount = self.bitcoind.getblockcount()
print("\nCurrent blocknum at time of redeem on Bitcoin:", blockcount)
if blockcount < int(redeemblocknum):
return self.redeem(contract, fundtx, secret)
else:
print("nLocktime exceeded, refunding")
return self.refund(contract)
else:
print("No contract for this p2sh found in database", p2sh)
def test_json_roundtrip(self):
VALUES = [
42,
0,
-42,
2100000000000000,
-2100000000000000,
"basic string",
"\u1111Unicode",
"\U00010000Wide Unicode",
"\x00\n\t\r\nEscape codes",
"\"'\"Quotes",
"",
None,
b"\x00\x01\xFFBinary data",
b"",
CBase58Data.from_bytes(b'\x00\x01\xFF', 42),
P2SHBitcoinAddress.from_bytes(b'\x00\x01\xFF'),
P2PKHBitcoinAddress.from_bytes(b'\x00\x01\xFF'),
CMutableTxIn(COutPoint(b'\x00' * 16 + b'\xFF' * 16, 42),
CScript(b'\x00\x01\xFF'), 42),
CMutableTxOut(42, CScript(b'\x00\x01\xFF')),
CMutableTransaction([
CMutableTxIn(COutPoint(b'\x00' * 32, 42),
CScript(b'\x00\x01\xFF'), 42),
CMutableTxIn(COutPoint(b'\xFF' * 32, 42),
CScript(b'\xFF\x01\x00'), 43)
], [
CMutableTxOut(42, CScript(b'\x00\x01\xFF')),
CMutableTxOut(43, CScript(b'\xFF\x01\x00'))
], 42, 3),
[
1,
b'\x00\x01\xFF',
"List Test",
],
{
'a': 1,
'key': b'\xFF\x01\x00',
1: 'Dictionary Test'
},
[
{
3: [
0,
1,
2,
],
},
[
[
b'\xFFRecursion Test',
],
],
],
]
for value in VALUES:
self.assertEqual(from_json(to_json(value)), value)
def redeem_contract(self, contract, secret):
print("Parsing script for redeem_contract...")
scriptarray = self.parse_script(contract.redeemScript)
redeemblocknum = scriptarray[8]
redeemPubKey = P2PKHBitcoinAddress.from_bytes(x(scriptarray[6]))
refundPubKey = P2PKHBitcoinAddress.from_bytes(x(scriptarray[13]))
p2sh = contract.p2sh
#checking there are funds in the address
amount = self.check_funds(p2sh)
if(amount == 0):
print("address ", p2sh, " not funded")
quit()
fundtx = self.find_transaction_to_address(p2sh)
amount = fundtx['amount'] / COIN
# print("Found fund_tx: ", fundtx)
p2sh = P2SHBitcoinAddress(p2sh)
if fundtx['address'] == p2sh:
print("Found {0} in p2sh {1}, redeeming...".format(amount, p2sh))
blockcount = self.bitcoind.getblockcount()
print("\nCurrent blocknum at time of redeem on Zcash:", blockcount)
if blockcount < int(redeemblocknum):
print('redeemPubKey', redeemPubKey)
zec_redeemScript = CScript(x(contract.redeemScript))
txin = CMutableTxIn(fundtx['outpoint'])
txout = CMutableTxOut(fundtx['amount'] - FEE, redeemPubKey.to_scriptPubKey())
# Create the unsigned raw transaction.
tx = CMutableTransaction([txin], [txout])
sighash = SignatureHash(zec_redeemScript, tx, 0, SIGHASH_ALL)
# TODO: protect privkey better, separate signing from rawtx creation
privkey = self.bitcoind.dumpprivkey(redeemPubKey)
sig = privkey.sign(sighash) + bytes([SIGHASH_ALL])
preimage = secret.encode('utf-8')
txin.scriptSig = CScript([sig, privkey.pub, preimage, OP_TRUE, zec_redeemScript])
# print("txin.scriptSig", b2x(txin.scriptSig))
txin_scriptPubKey = zec_redeemScript.to_p2sh_scriptPubKey()
print('Raw redeem transaction hex: ', b2x(tx.serialize()))
VerifyScript(txin.scriptSig, txin_scriptPubKey, tx, 0, (SCRIPT_VERIFY_P2SH,))
print("Script verified, sending raw transaction...")
txid = self.bitcoind.sendrawtransaction(tx)
fund_tx = str(fundtx['outpoint'])
redeem_tx = b2x(lx(b2x(txid)))
return {"redeem_tx": redeem_tx, "fund_tx": fund_tx}
else:
print("nLocktime exceeded, refunding")
print('refundPubKey', refundPubKey)
txid = self.bitcoind.sendtoaddress(refundPubKey, fundtx['amount'] - FEE)
fund_tx = str(fundtx['outpoint'])
refund_tx = b2x(lx(b2x(txid)))
return {"refund_tx": refund_tx, "fund_tx": fund_tx}
else:
print("No contract for this p2sh found in database", p2sh)
def syncWallet(result, wallet, gaitwallet, path):
hexprivkey = wallet.subkey(1).subkey(result['pointer']).wif()
hexpubkey = wallet.subkey(1).subkey(result['pointer']).public_copy().sec_as_hex()
tproxy = Proxy()
GAKey = gaitwallet.subkey(1).subkey_for_path(path).subkey(result['pointer']).sec_as_hex()
addrfromapi = P2SHBitcoinAddress.from_redeemScript(CScript(binascii.unhexlify(result['script'])))
print(addrfromapi)
#tproxy.call("importprivkey", hexprivkey, "", False)
print(tproxy.call("createmultisig", 2, [GAKey, hexpubkey])['address'])
def redeem_with_secret(contract, secret):
# How to find redeemScript and redeemblocknum from blockchain?
print("Redeeming contract using secret", contract.__dict__)
p2sh = contract.p2sh
minamount = float(contract.amount)
#checking there are funds in the address
amount = check_funds(p2sh)
if (amount < minamount):
print("address ", p2sh, " not sufficiently funded")
return false
fundtx = find_transaction_to_address(p2sh)
amount = fundtx['amount'] / COIN
p2sh = P2SHBitcoinAddress(p2sh)
if fundtx['address'] == p2sh:
print("Found {0} in p2sh {1}, redeeming...".format(amount, p2sh))
redeemPubKey = find_redeemAddr(contract)
print('redeemPubKey', redeemPubKey)
redeemScript = CScript(x(contract.redeemScript))
txin = CMutableTxIn(fundtx['outpoint'])
txout = CMutableTxOut(fundtx['amount'] - FEE,
redeemPubKey.to_scriptPubKey())
# Create the unsigned raw transaction.
tx = CMutableTransaction([txin], [txout])
sighash = SignatureHash(redeemScript, tx, 0, SIGHASH_ALL)
# TODO: figure out how to better protect privkey
privkey = bitcoind.dumpprivkey(redeemPubKey)
sig = privkey.sign(sighash) + bytes([SIGHASH_ALL])
print("SECRET", secret)
preimage = secret.encode('utf-8')
txin.scriptSig = CScript(
[sig, privkey.pub, preimage, OP_TRUE, redeemScript])
# exit()
# print("txin.scriptSig", b2x(txin.scriptSig))
txin_scriptPubKey = redeemScript.to_p2sh_scriptPubKey()
# print('Redeem txhex', b2x(tx.serialize()))
VerifyScript(txin.scriptSig, txin_scriptPubKey, tx, 0,
(SCRIPT_VERIFY_P2SH, ))
print("script verified, sending raw tx")
txid = bitcoind.sendrawtransaction(tx)
print("Txid of submitted redeem tx: ", b2x(lx(b2x(txid))))
return b2x(lx(b2x(txid)))
else:
print("No contract for this p2sh found in database", p2sh)
def generate_multisig_address(redeemscript: str, testnet: bool = False) -> str:
"""
Generates a P2SH-multisig Bitcoin address from a redeem script
Args:
redeemscript: hex-encoded redeem script
use generate_multisig_redeem_script to create
the redeem script from three compressed public keys
testnet: Should the address be testnet or mainnet?
Example:
TODO
"""
if testnet:
bitcoin.SelectParams('testnet')
redeem_script = CScript(bitcoin.core.x(redeemscript))
addr = P2SHBitcoinAddress.from_redeemScript(redeem_script)
return str(addr)
def test_json_roundtrip(self):
VALUES = [
42,
0,
-42,
2100000000000000,
-2100000000000000,
"basic string",
"\u1111Unicode",
"\U00010000Wide Unicode",
"\x00\n\t\r\nEscape codes",
'"\'"Quotes',
"",
None,
b"\x00\x01\xFFBinary data",
b"",
CBase58Data.from_bytes(b"\x00\x01\xFF", 42),
P2SHBitcoinAddress.from_bytes(b"\x00\x01\xFF"),
P2PKHBitcoinAddress.from_bytes(b"\x00\x01\xFF"),
CMutableTxIn(COutPoint(b"\x00" * 16 + b"\xFF" * 16, 42), CScript(b"\x00\x01\xFF"), 42),
CMutableTxOut(42, CScript(b"\x00\x01\xFF")),
CMutableTransaction(
[
CMutableTxIn(COutPoint(b"\x00" * 32, 42), CScript(b"\x00\x01\xFF"), 42),
CMutableTxIn(COutPoint(b"\xFF" * 32, 42), CScript(b"\xFF\x01\x00"), 43),
],
[CMutableTxOut(42, CScript(b"\x00\x01\xFF")), CMutableTxOut(43, CScript(b"\xFF\x01\x00"))],
42,
3,
),
[1, b"\x00\x01\xFF", "List Test"],
{"a": 1, "key": b"\xFF\x01\x00", 1: "Dictionary Test"},
[{3: [0, 1, 2]}, [[b"\xFFRecursion Test"]]],
]
for value in VALUES:
self.assertEqual(from_json(to_json(value)), value)
def p2sh_addr(self):
return P2SHBitcoinAddress.from_redeemScript(self.script)
def address(self):
return P2SHBitcoinAddress.from_redeemScript(self.deposit_redeemScript)
def P2SHAddress(self):
return P2SHBitcoinAddress.from_scriptPubKey(self.scriptPubkey())
def create_command(args):
redeemScript = hodl_redeemScript(args.privkey, args.nLockTime)
logging.debug('redeemScript: %s' % b2x(redeemScript))
addr = P2SHBitcoinAddress.from_redeemScript(redeemScript)
print(addr)
def p2sh_addr(self):
return P2SHBitcoinAddress.from_redeemScript(self.script)
def create_command(args):
redeemScript = hodl_redeemScript(args.privkey, args.nLockTime)
logging.debug('redeemScript: %s' % b2x(redeemScript))
addr = P2SHBitcoinAddress.from_redeemScript(redeemScript)
print(addr)
def create_command(pubkey, nLockTime):
redeemScript = hodl_redeemScript(pubkey, nLockTime)
addr = P2SHBitcoinAddress.from_redeemScript(redeemScript)
return ({'address': str(addr), 'redeemScript': b2x(redeemScript)})
