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 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 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
