def input_script(cls, txin, i, for_sig):
# for_sig:
# -1 : do not sign, estimate length
# i>=0 : serialized tx for signing input i
# None : add all known signatures
p2sh = txin.get('redeemScript') is not None
num_sig = txin['num_sig'] if p2sh else 1
address = txin['address']
x_signatures = txin['signatures']
signatures = filter(None, x_signatures)
is_complete = len(signatures) == num_sig
if for_sig in [-1, None]:
# if we have enough signatures, we use the actual pubkeys
# use extended pubkeys (with bip32 derivation)
if for_sig == -1:
# we assume that signature will be 0x48 bytes long
pubkeys = txin['pubkeys']
sig_list = ["00" * 0x48] * num_sig
elif is_complete:
pubkeys = txin['pubkeys']
sig_list = ((sig + '01') for sig in signatures)
else:
pubkeys = txin['x_pubkeys']
sig_list = ((sig + '01') if sig else NO_SIGNATURE
for sig in x_signatures)
script = ''.join(push_script(x) for x in sig_list)
if not p2sh:
x_pubkey = pubkeys[0]
if x_pubkey is None:
addrtype, h160 = bc_address_to_hash_160(txin['address'])
x_pubkey = 'fd' + (chr(addrtype) + h160).encode('hex')
script += push_script(x_pubkey)
else:
script = '00' + script # put op_0 in front of script
redeem_script = cls.multisig_script(pubkeys, num_sig)
script += push_script(redeem_script)
elif for_sig == i:
script_type = TYPE_ADDRESS
if 'is_claim' in txin and txin['is_claim']:
script_type |= TYPE_CLAIM
address = ((txin['claim_name'], txin['claim_value']), address)
elif 'is_support' in txin and txin['is_support']:
script_type |= TYPE_SUPPORT
address = ((txin['claim_name'], txin['claim_id']), address)
elif 'is_update' in txin and txin['is_update']:
script_type |= TYPE_UPDATE
address = ((txin['claim_name'], txin['claim_id'],
txin['claim_value']), address)
script = txin['redeemScript'] if p2sh else cls.pay_script(
script_type, address)
else:
script = ''
return script
def pay_script(cls, output_type, addr):
script = ''
if output_type & TYPE_CLAIM:
claim, addr = addr
claim_name, claim_value = claim
script += 'b5' # op_claim_name
script += push_script(claim_name.encode('hex'))
# In order to solve ulord can not resolve ...
if not gl.flag_claim:
claim_value = base64.b64encode(claim_value)
else:
gl.flag_abandon = False
script += push_script(claim_value.encode('hex'))
script += '6d75' # op_2drop, op_drop
elif output_type & TYPE_SUPPORT:
claim, addr = addr
claim_name, claim_id = claim
script += 'b6'
script += push_script(claim_name.encode('hex'))
script += push_script(claim_id.encode('hex'))
script += '6d75'
elif output_type & TYPE_UPDATE:
claim, addr = addr
claim_name, claim_id, claim_value = claim
script += 'b7'
script += push_script(claim_name.encode('hex'))
script += push_script(claim_id.encode('hex'))
claim_value = base64.b64encode(claim_value) #+
script += push_script(claim_value.encode('hex'))
script += '6d6d'
if output_type & TYPE_SCRIPT:
script += addr.encode('hex')
elif output_type & TYPE_ADDRESS: # op_2drop, op_drop
addrtype, hash_160 = bc_address_to_hash_160(addr)
if addrtype == 0:
script += '76a9' # op_dup, op_hash_160
script += push_script(hash_160.encode('hex'))
script += '88ac' # op_equalverify, op_checksig
elif addrtype == 5:
script += 'a9' # op_hash_160
script += push_script(hash_160.encode('hex'))
script += '87' # op_equal
else:
raise Exception("Unknown address type: %s" % addrtype)
else:
raise Exception("Unknown output type: %s" % output_type)
return script