def merge_nulldatas_from_block_obj(block, block_hash, block_height, verbose=True, session=DBSession, bitcoind=bitcoind):
try:
if get_block_by_hash(block_hash) is not None:
logging.info("already merged block %d, %s" % (block_height, block_hash))
return # we have this block already
for tx_n, tx in enumerate(block.txs):
for tx_out_n, tx_out in enumerate(tx.txs_out):
if tx_out.script[0:1] == b'\x6a':
try:
script_object = script_obj_from_script(tx_out.script)
except ScriptError as e:
logging.warning("Found OP_RETURN tx with bad nulldata: %s, %d" % (tx.hash()[::-1], tx_out_n))
continue
if type(script_object) == ScriptNulldata:
id_tx_reference = tx.txs_in[0] # tx containing the identity
if id_tx_reference.is_coinbase():
sender_address = 'COINBASE'
else:
id_tx_json = bitcoind.getrawtransaction(hexlify(id_tx_reference.previous_hash[::-1]), 1)
sender_address = id_tx_json['vout'][id_tx_reference.previous_index]['scriptPubKey']['addresses'][0]
session.merge(Nulldatas(in_block_hash=block_hash, txid=hexlify(tx.hash()[::-1]), script=hexlify(tx_out.script), tx_n=tx_n, tx_out_n=tx_out_n, timestamp=block.timestamp, sender=sender_address))
if verbose:
logging.info("%s, %s, %s" % (script_object, tx.hash(), block_height))
session.merge(Blocks(block_hash=block_hash, height=block_height, prev_block_hash=block.previous_block_id()))
except Exception as e:
session.rollback()
raise e
else:
session.commit()
if verbose:
logging.info('Scanned %s' % block_height)
def test_sign(self):
sv = 33143560198659167577410026742586567991638126035902913554051654024377193788946
tx_out_script = b'v\xa9\x14\x91\xb2K\xf9\xf5(\x852\x96\n\xc6\x87\xab\xb05\x12{\x1d(\xa5\x88\xac'
st = script_obj_from_script(tx_out_script)
hl = build_hash160_lookup([1])
solution = st.solve(hash160_lookup=hl, sign_value=sv, signature_type=SIGHASH_ALL)
self.assertEqual(solution, b'G0D\x02 ^=\xf5\xb5[\xe6!@\x04,"\x0b\x1f\xdf\x10\\\xc8Q\x13\xafV*!\\\x1f\xc5\xb5\xc5"\xd1\xb3\xd3\x02 8\xc9YK\x15o\xae\xd7\xf3|0\x07z\xff\xbfj\xcfB\xbf\x17\xb1\xe69\xa1\xfc\xc6\xc5\x1ag\xab\xa2\x16\x01A\x04y\xbef~\xf9\xdc\xbb\xacU\xa0b\x95\xce\x87\x0b\x07\x02\x9b\xfc\xdb-\xce(\xd9Y\xf2\x81[\x16\xf8\x17\x98H:\xdaw&\xa3\xc4e]\xa4\xfb\xfc\x0e\x11\x08\xa8\xfd\x17\xb4H\xa6\x85T\x19\x9cG\xd0\x8f\xfb\x10\xd4\xb8')
def test_sign(self):
sv = 33143560198659167577410026742586567991638126035902913554051654024377193788946
tx_out_script = b'v\xa9\x14\x91\xb2K\xf9\xf5(\x852\x96\n\xc6\x87\xab\xb05\x12{\x1d(\xa5\x88\xac'
st = script_obj_from_script(tx_out_script)
hl = build_hash160_lookup([1])
solution = st.solve(hash160_lookup=hl, sign_value=sv, signature_type=SIGHASH_ALL)
self.assertEqual(solution, b'G0D\x02 ^=\xf5\xb5[\xe6!@\x04,"\x0b\x1f\xdf\x10\\\xc8Q\x13\xafV*!\\\x1f\xc5\xb5\xc5"\xd1\xb3\xd3\x02 8\xc9YK\x15o\xae\xd7\xf3|0\x07z\xff\xbfj\xcfB\xbf\x17\xb1\xe69\xa1\xfc\xc6\xc5\x1ag\xab\xa2\x16\x01A\x04y\xbef~\xf9\xdc\xbb\xacU\xa0b\x95\xce\x87\x0b\x07\x02\x9b\xfc\xdb-\xce(\xd9Y\xf2\x81[\x16\xf8\x17\x98H:\xdaw&\xa3\xc4e]\xa4\xfb\xfc\x0e\x11\x08\xa8\xfd\x17\xb4H\xa6\x85T\x19\x9cG\xd0\x8f\xfb\x10\xd4\xb8')
def test_recognize_multisig(self):
h = '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'
f = io.BytesIO(h2b(h))
tx = Tx.parse(f)
tx.parse_unspents(f)
self.assertEqual(tx.id(), "10c61e258e0a2b19b245a96a2d0a1538fe81cd4ecd547e0a3df7ed6fd3761ada")
the_script = tx.unspents[0].script
s = script_obj_from_script(tx.unspents[0].script)
self.assertEqual(s.script(), the_script)
def test_recognize_multisig(self):
h = '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'
f = io.BytesIO(h2b(h))
tx = Tx.parse(f)
tx.parse_unspents(f)
self.assertEqual(tx.id(), "10c61e258e0a2b19b245a96a2d0a1538fe81cd4ecd547e0a3df7ed6fd3761ada")
the_script = tx.unspents[0].script
s = script_obj_from_script(tx.unspents[0].script)
self.assertEqual(s.script(), the_script)
def test_script_type_pay_to_public_pair(self):
for se in range(1, 100):
key = Key(secret_exponent=se)
for b in [True, False]:
st = ScriptPayToPublicKey.from_key(key, use_uncompressed=b)
addr = key.address(use_uncompressed=b)
self.assertEqual(st.address(), addr)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def test_script_type_pay_to_address(self):
for se in range(1, 100):
key = Key(secret_exponent=se)
for b in [True, False]:
addr = key.address(use_uncompressed=b)
st = script_obj_from_address(addr)
self.assertEqual(st.address(), addr)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def test_script_type_pay_to_address(self):
for se in range(1, 100):
key = Key(secret_exponent=se)
for b in [True, False]:
addr = key.address(use_uncompressed=b)
st = script_obj_from_address(addr)
self.assertEqual(st.address(), addr)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def test_script_type_pay_to_public_pair(self):
for se in range(1, 100):
key = Key(secret_exponent=se)
for b in [True, False]:
st = ScriptPayToPublicKey.from_key(key, use_uncompressed=b)
addr = key.address(use_uncompressed=b)
self.assertEqual(st.address(), addr)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def solve(self, hash160_lookup, tx_in_idx, tx_out_script, hash_type=None, **kwargs):
"""
Sign a standard transaction.
hash160_lookup:
An object with a get method that accepts a hash160 and returns the
corresponding (secret exponent, public_pair, is_compressed) tuple or
None if it's unknown (in which case the script will obviously not be signed).
A standard dictionary will do nicely here.
tx_in_idx:
the index of the tx_in we are currently signing
tx_out:
the tx_out referenced by the given tx_in
"""
if hash_type is None:
hash_type = self.SIGHASH_ALL
tx_in = self.txs_in[tx_in_idx]
is_p2h = (len(tx_out_script) == 23 and byte_to_int(tx_out_script[0]) == opcodes.OP_HASH160 and
byte_to_int(tx_out_script[-1]) == opcodes.OP_EQUAL)
if is_p2h:
hash160 = ScriptPayToScript.from_script(tx_out_script).hash160
p2sh_lookup = kwargs.get("p2sh_lookup")
if p2sh_lookup is None:
raise ValueError("p2sh_lookup not set")
if hash160 not in p2sh_lookup:
raise ValueError("hash160=%s not found in p2sh_lookup" %
b2h(hash160))
script_to_hash = p2sh_lookup[hash160]
else:
script_to_hash = tx_out_script
# Leave out the signature from the hash, since a signature can't sign itself.
# The checksig op will also drop the signatures from its hash.
def signature_for_hash_type_f(hash_type, script):
return self.signature_hash(script, tx_in_idx, hash_type)
def witness_signature_for_hash_type(hash_type, script):
return self.signature_for_hash_type_segwit(script, tx_in_idx, hash_type)
witness_signature_for_hash_type.skip_delete = True
signature_for_hash_type_f.witness = witness_signature_for_hash_type
if tx_in.verify(
tx_out_script, signature_for_hash_type_f, lock_time=self.lock_time,
tx_version=self.version):
return
the_script = script_obj_from_script(tx_out_script)
solution = the_script.solve(
hash160_lookup=hash160_lookup, signature_type=hash_type,
existing_script=self.txs_in[tx_in_idx].script, existing_witness=tx_in.witness,
script_to_hash=script_to_hash, signature_for_hash_type_f=signature_for_hash_type_f, **kwargs)
return solution
def test_sign(self):
sv = 33143560198659167577410026742586567991638126035902913554051654024377193788946
tx_out_script = b'v\xa9\x14\x91\xb2K\xf9\xf5(\x852\x96\n\xc6\x87\xab\xb05\x12{\x1d(\xa5\x88\xac'
st = script_obj_from_script(tx_out_script)
hl = build_hash160_lookup([1])
solution = st.solve(hash160_lookup=hl, signature_for_hash_type_f=const_f(sv), signature_type=SIGHASH_ALL)
self.assertEqual(
solution, h2b(
"47304402205e3df5b55be62140042c220b1fdf105cc85113af562a215c1fc5b5c522d1"
"b3d3022038c9594b156faed7f37c30077affbf6acf42bf17b1e639a1fcc6c51a67aba2"
"1601410479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f817"
"98483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"))
def test_solve_pay_to_address(self):
for se in range(1, 10):
key = Key(secret_exponent=se)
for b in [True, False]:
addr = key.address(use_uncompressed=b)
st = script_obj_from_address(addr)
self.assertEqual(st.address(), addr)
hl = build_hash160_lookup([se])
sv = 100
solution = st.solve(hash160_lookup=hl, signature_for_hash_type_f=const_f(sv), signature_type=SIGHASH_ALL)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def test_solve_pay_to_public_pair(self):
for se in range(1, 10):
key = Key(secret_exponent=se)
for b in [True, False]:
addr = key.address(use_uncompressed=b)
st = ScriptPayToPublicKey.from_key(key, use_uncompressed=b)
self.assertEqual(st.address(), addr)
hl = build_hash160_lookup([se])
sv = 100
solution = st.solve(hash160_lookup=hl, sign_value=sv, signature_type=SIGHASH_ALL)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def test_solve_pay_to_public_pair(self):
for se in range(1, 10):
key = Key(secret_exponent=se)
for b in [True, False]:
addr = key.address(use_uncompressed=b)
st = ScriptPayToPublicKey.from_key(key, use_uncompressed=b)
self.assertEqual(st.address(), addr)
hl = build_hash160_lookup([se])
sv = 100
solution = st.solve(hash160_lookup=hl, sign_value=sv, signature_type=SIGHASH_ALL)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
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:])
if key_type == 'segwit':
return script_obj_from_script(data)
raise ValueError("bad text")
def test_solve_pay_to_address(self):
for se in range(1, 10):
key = Key(secret_exponent=se)
for b in [True, False]:
addr = key.address(use_uncompressed=b)
st = script_obj_from_address(addr)
self.assertEqual(st.address(), addr)
hl = build_hash160_lookup([se])
sv = 100
solution = st.solve(hash160_lookup=hl, signature_for_hash_type_f=const_f(sv), signature_type=SIGHASH_ALL)
sc = st.script()
st = script_obj_from_script(sc)
self.assertEqual(st.address(), addr)
def test_sign(self):
sv = 33143560198659167577410026742586567991638126035902913554051654024377193788946
tx_out_script = b'v\xa9\x14\x91\xb2K\xf9\xf5(\x852\x96\n\xc6\x87\xab\xb05\x12{\x1d(\xa5\x88\xac'
st = script_obj_from_script(tx_out_script)
hl = build_hash160_lookup([1])
solution = st.solve(hash160_lookup=hl,
signature_for_hash_type_f=const_f(sv),
signature_type=SIGHASH_ALL)
self.assertEqual(
solution,
h2b("47304402205e3df5b55be62140042c220b1fdf105cc85113af562a215c1fc5b5c522d1"
"b3d3022038c9594b156faed7f37c30077affbf6acf42bf17b1e639a1fcc6c51a67aba2"
"1601410479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f817"
"98483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
))
def who_signed_tx(tx, tx_in_idx, netcode='BTC'):
"""
Given a transaction (tx) an input index (tx_in_idx), attempt to figure
out which addresses where used in signing (so far). This method
depends on tx.unspents being properly configured. This should work on
partially-signed MULTISIG transactions (it will return as many
addresses as there are good signatures).
Returns a list of ( address, sig_type ) pairs.
Raises NoAddressesForScriptTypeError if addresses cannot be determined
for the input's script.
TODO: This does not yet support P2SH.
"""
tx_in = tx.txs_in[tx_in_idx]
parent_tx_out_idx = tx_in.previous_index
parent_tx_out_script = tx.unspents[tx_in_idx].script
script_obj = script_obj_from_script(parent_tx_out_script)
signed_by = []
if type(script_obj) not in (ScriptPayToAddress, ScriptPayToPublicKey,
ScriptMultisig):
raise NoAddressesForScriptTypeError(
'unable to determine signing addresses for script type of parent tx {}[{}]'
.format(b2h_rev(tx_in.previous_hash), parent_tx_out_idx))
script = tx_in.script
pc = 0
while pc < len(script):
opcode, data, pc = get_opcode(script, pc)
if data is None:
continue
try:
sig_pair, sig_type = parse_signature_blob(data)
except (ValueError, TypeError, binascii.Error, UnexpectedDER):
continue
sig_hash = tx.signature_hash(parent_tx_out_script, parent_tx_out_idx,
sig_type)
for sec_key in script_obj.sec_keys:
public_pair = sec_to_public_pair(sec_key)
if ecdsa_verify(generator_secp256k1, public_pair, sig_hash,
sig_pair):
addr_pfx = address_prefix_for_netcode(netcode)
addr = public_pair_to_bitcoin_address(public_pair,
address_prefix=addr_pfx)
signed_by.append((addr, sig_type))
return signed_by
def signTx(tx, pre_out_ids=[]):
pubkey_addr = ''
outscript = r''
for pre_out_id in pre_out_ids:
if '' != pre_out_id:
pre_out = TransactionOutDao.searchById(pre_out_id)
pubkey_addr = pre_out.address()
outscript = pre_out.script
if '' != pubkey_addr:
secretKey = SecretKeyDao.searchByPubAddr(pubkey_addr)
key = Key(
public_pair=[int(secretKey.publicKey),
int(secretKey.privateKey)])
tx.sign({
script_obj_from_script(outscript).hash160:
[secretKey.sec_num, key.public_pair(), True],
})
return tx
def who_signed_tx(tx, tx_in_idx, netcode='BTC'):
"""
Given a transaction (tx) an input index (tx_in_idx), attempt to figure
out which addresses where used in signing (so far). This method
depends on tx.unspents being properly configured. This should work on
partially-signed MULTISIG transactions (it will return as many
addresses as there are good signatures).
Returns a list of ( address, sig_type ) pairs.
Raises NoAddressesForScriptTypeError if addresses cannot be determined
for the input's script.
TODO: This does not yet support P2SH.
"""
tx_in = tx.txs_in[tx_in_idx]
parent_tx_out_idx = tx_in.previous_index
parent_tx_out_script = tx.unspents[tx_in_idx].script
script_obj = script_obj_from_script(parent_tx_out_script)
signed_by = []
if type(script_obj) not in (ScriptPayToAddress, ScriptPayToPublicKey, ScriptMultisig):
raise NoAddressesForScriptTypeError(
'unable to determine signing addresses for script type of parent tx {}[{}]'
.format(b2h_rev(tx_in.previous_hash), parent_tx_out_idx))
script = tx_in.script
pc = 0
while pc < len(script):
opcode, data, pc = get_opcode(script, pc)
if data is None:
continue
try:
sig_pair, sig_type = parse_signature_blob(data)
except (ValueError, TypeError, binascii.Error, UnexpectedDER):
continue
sig_hash = tx.signature_hash(parent_tx_out_script, parent_tx_out_idx, sig_type)
for sec_key in script_obj.sec_keys:
public_pair = sec_to_public_pair(sec_key)
if ecdsa_verify(generator_secp256k1, public_pair, sig_hash, sig_pair):
addr_pfx = address_prefix_for_netcode(netcode)
addr = public_pair_to_bitcoin_address(public_pair, address_prefix=addr_pfx)
signed_by.append((addr, sig_type))
return signed_by
def sign_tx_in(self,
hash160_lookup,
tx_in_idx,
tx_out_script,
hash_type=SIGHASH_ALL,
**kwargs):
tx_in = self.txs_in[tx_in_idx]
is_p2h = (len(tx_out_script) == 23
and byte_to_int(tx_out_script[0]) == opcodes.OP_HASH160
and byte_to_int(tx_out_script[-1]) == opcodes.OP_EQUAL)
script_to_hash = tx_out_script
if is_p2h:
hash160 = ScriptPayToScript.from_script(tx_out_script).hash160
p2sh_lookup = kwargs.get("p2sh_lookup")
if p2sh_lookup is None:
raise ValueError("p2sh_lookup not set")
if hash160 not in p2sh_lookup:
raise ValueError("hash160=%s not found in p2sh_lookup" %
b2h(hash160))
script_to_hash = p2sh_lookup[hash160]
signature_for_hash_type_f = lambda hash_type: self.signature_hash(
tx_out_script, tx_in_idx, hash_type)
if tx_in.verify(tx_out_script,
signature_for_hash_type_f,
lock_time=kwargs.get('lock_time')):
return
sign_value = self.signature_hash(script_to_hash,
tx_in_idx,
hash_type=hash_type)
the_script = script_obj_from_script(tx_out_script)
solution = the_script.solve(hash160_lookup=hash160_lookup,
sign_value=sign_value,
signature_type=hash_type,
existing_script=self.txs_in[tx_in_idx].script,
**kwargs)
tx_in.script = solution
def sign_tx_in(self, hash160_lookup, tx_in_idx, tx_out_script,
hash_type=SIGHASH_ALL, **kwargs):
tx_in = self.txs_in[tx_in_idx]
is_p2h = (len(tx_out_script) == 23 and byte_to_int(tx_out_script[0]) == opcodes.OP_HASH160 and byte_to_int(tx_out_script[-1]) == opcodes.OP_EQUAL)
script_to_hash = tx_out_script
if is_p2h:
hash160 = ScriptPayToScript.from_script(tx_out_script).hash160
p2sh_lookup = kwargs.get("p2sh_lookup")
if p2sh_lookup is None:
raise ValueError("p2sh_lookup not set")
if hash160 not in p2sh_lookup:
raise ValueError("hash160=%s not found in p2sh_lookup" %
b2h(hash160))
script_to_hash = p2sh_lookup[hash160]
signature_for_hash_type_f = lambda hash_type: self.signature_hash(tx_out_script, tx_in_idx, hash_type)
if tx_in.verify(tx_out_script, signature_for_hash_type_f):
return
sign_value = self.signature_hash(script_to_hash, tx_in_idx, hash_type=hash_type)
the_script = script_obj_from_script(tx_out_script)
solution = the_script.solve(hash160_lookup=hash160_lookup, sign_value=sign_value, signature_type=hash_type,existing_script=self.txs_in[tx_in_idx].script, **kwargs)
tx_in.script = solution
def address(self, netcode=None):
# attempt to return the destination address, or None on failure
return script_obj_from_script(self.script).address(netcode=netcode)
def hash160(self):
# attempt to return the destination hash160, or None on failure
info = script_obj_from_script(self.script).info()
return info.get("hash160")
def test_weird_tx(self):
# this is from tx 12a8d1d62d12307eac6e62f2f14d7e826604e53c320a154593845aa7c8e59fbf
st = script_obj_from_script(b'Q')
self.assertNotEqual(st, None)
def test_weird_tx(self):
# this is from tx 12a8d1d62d12307eac6e62f2f14d7e826604e53c320a154593845aa7c8e59fbf
st = script_obj_from_script(b'Q')
self.assertNotEqual(st, None)
