def parse_script_sig(bytes):
try:
decoded = [x for x in script_GetOp(bytes)]
except Exception:
# coinbase transactions raise an exception
print_error("cannot find address in input script", bytes.encode('hex'))
return
match = [opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
item = decoded[0][1]
if item[0] == chr(0):
redeemScript = item.encode('hex')
return 'p2wpkh-p2sh', hash160_to_p2sh(
hash_160(redeemScript.decode('hex'))), None
else:
return 'p2pk', None, None
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
sig = decoded[0][1].encode('hex')
pubkey = decoded[1][1].encode('hex')
address = public_key_to_p2pkh(pubkey.decode('hex'))
return 'p2pkh', address, pubkey
# p2sh transaction, m of n
match = [opcodes.OP_0] + [opcodes.OP_PUSHDATA4] * (len(decoded) - 1)
if not match_decoded(decoded, match):
print_error("cannot find address in input script", bytes.encode('hex'))
return
x_sig = [x[1].encode('hex') for x in decoded[1:-1]]
dec2 = [x for x in script_GetOp(decoded[-1][1])]
m = dec2[0][0] - opcodes.OP_1 + 1
n = dec2[-2][0] - opcodes.OP_1 + 1
op_m = opcodes.OP_1 + m - 1
op_n = opcodes.OP_1 + n - 1
match_multisig = [op_m] + [opcodes.OP_PUSHDATA4] * n + [
op_n, opcodes.OP_CHECKMULTISIG
]
if not match_decoded(dec2, match_multisig):
print_error("cannot find address in input script", bytes.encode('hex'))
return
x_pubkeys = map(lambda x: x[1].encode('hex'), dec2[1:-2])
pubkeys = [xpubkey_to_pubkey(x) for x in x_pubkeys]
redeemScript = multisig_script(pubkeys, m)
# write result in d
return 'p2sh', hash160_to_p2sh(hash_160(
redeemScript.decode('hex'))), redeemScript
def parse_type_script_sig(bytes):
decoded = [x for x in script_GetOp(bytes)]
match = [opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
item = decoded[0][1]
if item[0] == chr(0):
return 'p2wpkh-p2sh'
else:
return 'p2pk'
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
return 'p2pkh'
# p2sh transaction, m of n
match = [opcodes.OP_0] + [opcodes.OP_PUSHDATA4] * (len(decoded) - 1)
if not match_decoded(decoded, match):
print_error("cannot find address in input script", bytes.encode('hex'))
return
x_sig = [x[1].encode('hex') for x in decoded[1:-1]]
dec2 = [x for x in script_GetOp(decoded[-1][1])]
m = dec2[0][0] - opcodes.OP_1 + 1
n = dec2[-2][0] - opcodes.OP_1 + 1
op_m = opcodes.OP_1 + m - 1
op_n = opcodes.OP_1 + n - 1
match_multisig = [op_m] + [opcodes.OP_PUSHDATA4] * n + [
op_n, opcodes.OP_CHECKMULTISIG
]
if not match_decoded(dec2, match_multisig):
print_error("cannot find address in input script", bytes.encode('hex'))
return
x_pubkeys = map(lambda x: x[1].encode('hex'), dec2[1:-2])
pubkeys = [xpubkey_to_pubkey(x) for x in x_pubkeys]
redeemScript = multisig_script(pubkeys, m)
# write result in d
return 'p2sh', hash160_to_p2sh(hash_160(
redeemScript.decode('hex'))), redeemScript
def get_address_from_output_script(bytes):
decoded = [x for x in script_GetOp(bytes)]
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return TYPE_PUBKEY, decoded[0][1].encode('hex')
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG
]
if match_decoded(decoded, match):
return TYPE_ADDRESS, hash160_to_p2pkh(decoded[2][1])
# p2sh
match = [opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUAL]
if match_decoded(decoded, match):
return TYPE_ADDRESS, hash160_to_p2sh(decoded[1][1])
return TYPE_SCRIPT, bytes
def parse_script_pub_key(bytes):
decoded = [x for x in script_GetOp(bytes)]
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return 'p2pk', decoded[0][1].encode('hex')
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG
]
if match_decoded(decoded, match):
return 'p2pkh', hash160_to_p2pkh(decoded[2][1])
# p2sh
match = [opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUAL]
if match_decoded(decoded, match):
return 'p2sh', hash160_to_p2sh(decoded[1][1])
return 'unknown', None
def parse_scriptSig(self, bytes):
d = {}
try:
decoded = [x for x in script_GetOp(bytes)]
except Exception:
# coinbase transactions raise an exception
# print_error("cannot find address in input script", bytes.encode('hex'))
return
match = [opcodes.OP_PUSHDATA4]
if self.match_decoded(decoded, match):
item = decoded[0][1]
if item[0] == chr(0):
redeemScript = item.encode('hex')
d['address'] = hash160_to_p2sh(
hash_160(redeemScript.decode('hex')))
d['type'] = 'p2wpkh-p2sh'
d['redeemScript'] = redeemScript
d['x_pubkeys'] = ["(witness)"]
d['pubkeys'] = ["(witness)"]
d['signatures'] = ['(witness)']
d['num_sig'] = 1
else:
# payto_pubkey
d['type'] = 'p2pk'
d['address'] = "(pubkey)"
d['signatures'] = [item.encode('hex')]
d['num_sig'] = 1
d['x_pubkeys'] = ["(pubkey)"]
d['pubkeys'] = ["(pubkey)"]
return
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if self.match_decoded(decoded, match):
sig = decoded[0][1].encode('hex')
x_pubkey = decoded[1][1].encode('hex')
try:
signatures = parse_sig([sig])
pubkey, address = xpubkey_to_address(x_pubkey)
except:
import traceback
traceback.print_exc(file=sys.stdout)
# print_error("cannot find address in input script", bytes.encode('hex'))
return
d['type'] = 'p2pkh'
d['signatures'] = signatures
d['x_pubkeys'] = [x_pubkey]
d['num_sig'] = 1
d['pubkeys'] = [pubkey]
d['address'] = address
return
# p2sh transaction, m of n
match = [opcodes.OP_0] + [opcodes.OP_PUSHDATA4] * (len(decoded) - 1)
if not self.match_decoded(decoded, match):
# print_error("cannot find address in input script", bytes.encode('hex'))
return
x_sig = [x[1].encode('hex') for x in decoded[1:-1]]
dec2 = [x for x in script_GetOp(decoded[-1][1])]
m = dec2[0][0] - opcodes.OP_1 + 1
n = dec2[-2][0] - opcodes.OP_1 + 1
op_m = opcodes.OP_1 + m - 1
op_n = opcodes.OP_1 + n - 1
match_multisig = [op_m] + [opcodes.OP_PUSHDATA4] * n + [
op_n, opcodes.OP_CHECKMULTISIG
]
if not self.match_decoded(dec2, match_multisig):
# print_error("cannot find address in input script", bytes.encode('hex'))
return
x_pubkeys = map(lambda x: x[1].encode('hex'), dec2[1:-2])
pubkeys = [xpubkey_to_pubkey(x) for x in x_pubkeys]
redeemScript = multisig_script(pubkeys, m)
# write result in d
d['type'] = 'p2sh'
d['num_sig'] = m
d['signatures'] = parse_sig(x_sig)
d['x_pubkeys'] = x_pubkeys
d['pubkeys'] = pubkeys
d['redeemScript'] = redeemScript
d['address'] = hash160_to_p2sh(hash_160(redeemScript.decode('hex')))