return False
return True
-def get_address_from_input_script(bytes):
+def parse_scriptSig(d, 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 [], {}, "(None)"
+ return
# payto_pubkey
match = [ opcodes.OP_PUSHDATA4 ]
if match_decoded(decoded, match):
- return None, {}, "(pubkey)"
+ return
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
pubkey = decoded[1][1].encode('hex')
if sig[-2:] == '01':
sig = sig[:-2]
- return [pubkey], {pubkey:sig}, public_key_to_bc_address(pubkey.decode('hex'))
+ d['pubkeys'] = [pubkey]
+ d['signatures'] = {pubkey:sig}
+ d['address'] = public_key_to_bc_address(pubkey.decode('hex'))
+ return
else:
print_error("cannot find address in input script", bytes.encode('hex'))
- return [], {}, "(None)"
-
+ return
# p2sh transaction, 2 of n
match = [ opcodes.OP_0 ]
match.append(opcodes.OP_PUSHDATA4)
if match_decoded(decoded, match):
-
redeemScript = decoded[-1][1]
num = len(match) - 2
- signatures = map(lambda x:x[1][:-1].encode('hex'), decoded[1:-1])
-
+ d['signatures'] = map(lambda x:x[1][:-1].encode('hex'), decoded[1:-1])
+ d['address'] = hash_160_to_bc_address(hash_160(redeemScript), 5)
+ d['redeemScript'] = redeemScript.encode('hex')
dec2 = [ x for x in script_GetOp(redeemScript) ]
-
- # 2 of 2
- match2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ]
- if match_decoded(dec2, match2):
+ match_2of2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ]
+ match_2of3 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
+ if match_decoded(dec2, match_2of2):
pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex') ]
- return pubkeys, signatures, hash_160_to_bc_address(hash_160(redeemScript), 5)
-
- # 2 of 3
- match2 = [ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
- if match_decoded(dec2, match2):
+ elif match_decoded(dec2, match_2of3):
pubkeys = [ dec2[1][1].encode('hex'), dec2[2][1].encode('hex'), dec2[3][1].encode('hex') ]
- return pubkeys, signatures, hash_160_to_bc_address(hash_160(redeemScript), 5)
+ else:
+ return
+ d['pubkeys'] = pubkeys
+ return
print_error("cannot find address in input script", bytes.encode('hex'))
- return [], {}, "(None)"
+
class Transaction:
- def __init__(self, raw, is_complete = True):
+ def __init__(self, raw):
self.raw = raw
self.deserialize()
self.inputs = self.d['inputs']
self.outputs = map(lambda x: (x['address'],x['value']), self.outputs)
self.locktime = self.d['lockTime']
-
def __str__(self):
return self.raw
self.outputs = outputs
return self
+ @classmethod
+ def sweep(klass, privkeys, network, to_address, fee):
+ inputs = []
+ for privkey in privkeys:
+ pubkey = public_key_from_private_key(privkey)
+ address = address_from_private_key(privkey)
+ u = network.synchronous_get([ ('blockchain.address.listunspent',[address])])[0]
+ pay_script = klass.pay_script(address)
+ for item in u:
+ item['scriptPubKey'] = pay_script
+ item['redeemPubkey'] = pubkey
+ item['address'] = address
+ item['prevout_hash'] = item['tx_hash']
+ item['prevout_n'] = item['tx_pos']
+ inputs += u
+
+ if not inputs:
+ return
+
+ total = sum( map(lambda x:int(x.get('value')), inputs) ) - fee
+ outputs = [(to_address, total)]
+ self = klass.from_io(inputs, outputs)
+ self.sign({ pubkey:privkey })
+ return self
+
@classmethod
def multisig_script(klass, public_keys, num=None):
n = len(public_keys)
d['prevout_hash'] = prevout_hash
d['prevout_n'] = prevout_n
d['sequence'] = sequence
+
+ d['pubkeys'] = []
+ d['signatures'] = {}
+ d['address'] = None
if scriptSig:
- pubkeys, signatures, address = get_address_from_input_script(scriptSig)
- else:
- pubkeys = []
- signatures = {}
- address = None
- d['address'] = address
- d['pubkeys'] = pubkeys
- d['signatures'] = signatures
+ parse_scriptSig(d, scriptSig)
return d