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deserialize.py
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deserialize.py
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#!/usr/bin/env python
'''
Modified on Mar 30, 2014
@author: BitXBay
'''
from BCDataStream import *
from enumeration import Enumeration
from base58 import public_key_to_bc_address, hash_160_to_bc_address
import struct
import hashlib, binascii
import helper
def getTxId(_data):
_temp = hashlib.sha256(hashlib.sha256(_data).digest()).hexdigest()
_result = ''
while _temp !='':
_result = _result + _temp[-2:]
_temp = _temp[:-2]
return _result
def short_hex(bytes):
t = bytes.encode('hex_codec')
if len(t) < 11:
return t
return t[0:4]+"..."+t[-4:]
def parse_TxIn(vds):
d = {}
d['prevout_hash'] = vds.read_bytes(32)
d['prevout_n'] = vds.read_uint32()
d['scriptSig'] = vds.read_bytes(vds.read_compact_size())
d['sequence'] = vds.read_uint32()
return d
def deserialize_TxIn(d):
if d['prevout_hash'] == "\x00"*32:
result = {"address":'00000000'}
else:
pk = extract_public_key(d['scriptSig'])
result = {"address":pk}
return result
def parse_TxOut(vds):
d = {}
d['value'] = vds.read_int64()
d['scriptPubKey'] = vds.read_bytes(vds.read_compact_size())
return d
def deserialize_TxOut(d):
pk = extract_public_key(d['scriptPubKey'])
result = {"address":pk, "value":"%.8f"%(d['value']/1.0e8,)}
return result
def parse_Transaction(vds):
d = {}
start_pos = vds.read_cursor
d['version'] = vds.read_int32()
n_vin = vds.read_compact_size()
d['txIn'] = []
for i in xrange(n_vin):
d['txIn'].append(parse_TxIn(vds))
n_vout = vds.read_compact_size()
d['txOut'] = []
for i in xrange(n_vout):
d['txOut'].append(parse_TxOut(vds))
d['lockTime'] = vds.read_uint32()
d['__data__'] = vds.input[start_pos:vds.read_cursor]
return d
def deserialize_Transaction(d, block_time, addresses):
txIns = []
txOuts = []
ct = False
for txIn in d['txIn']:
txIns.append(deserialize_TxIn(txIn))
for txOut in d['txOut']:
res = deserialize_TxOut(txOut)
txOuts.append(res)
if res["address"] in addresses:
ct = True
if ct:
tx_id = getTxId(d['__data__'])
sql= helper.sqlhelper()
if sql.testxtid(tx_id):
id = sql.inserttx(tx_id,int(block_time))
for txI in txIns:
sql.insert(int(block_time), txI["address"], 0, False, id)
for txO in txOuts:
sql.insert(int(block_time), txO["address"], txO["value"], True, id)
def deserialize_TransactionRaw(d):
txIns = []
txOuts = []
for txIn in d['txIn']:
txIns.append(deserialize_TxIn(txIn))
for txOut in d['txOut']:
res = deserialize_TxOut(txOut)
txOuts.append(res)
return txIns
def parse_BlockHeader(vds):
d = {}
header_start = vds.read_cursor
d['version'] = vds.read_int32()
d['hashPrev'] = vds.read_bytes(32)
d['hashMerkleRoot'] = vds.read_bytes(32)
d['nTime'] = vds.read_uint32()
d['nBits'] = vds.read_uint32()
d['nNonce'] = vds.read_uint32()
header_end = vds.read_cursor
d['__header__'] = vds.input[header_start:header_end]
return d
def parse_Block(vds):
d = parse_BlockHeader(vds)
d['transactions'] = []
nTransactions = vds.read_compact_size()
for i in xrange(nTransactions):
d['transactions'].append(parse_Transaction(vds))
return d
def deserialize_Block(d, block_time, addresses):
result = []
for t in d['transactions']:
deserialize_Transaction(t, block_time, addresses)
opcodes = Enumeration("Opcodes", [
("OP_0", 0), ("OP_PUSHDATA1",76), "OP_PUSHDATA2", "OP_PUSHDATA4", "OP_1NEGATE", "OP_RESERVED",
"OP_1", "OP_2", "OP_3", "OP_4", "OP_5", "OP_6", "OP_7",
"OP_8", "OP_9", "OP_10", "OP_11", "OP_12", "OP_13", "OP_14", "OP_15", "OP_16",
"OP_NOP", "OP_VER", "OP_IF", "OP_NOTIF", "OP_VERIF", "OP_VERNOTIF", "OP_ELSE", "OP_ENDIF", "OP_VERIFY",
"OP_RETURN", "OP_TOALTSTACK", "OP_FROMALTSTACK", "OP_2DROP", "OP_2DUP", "OP_3DUP", "OP_2OVER", "OP_2ROT", "OP_2SWAP",
"OP_IFDUP", "OP_DEPTH", "OP_DROP", "OP_DUP", "OP_NIP", "OP_OVER", "OP_PICK", "OP_ROLL", "OP_ROT",
"OP_SWAP", "OP_TUCK", "OP_CAT", "OP_SUBSTR", "OP_LEFT", "OP_RIGHT", "OP_SIZE", "OP_INVERT", "OP_AND",
"OP_OR", "OP_XOR", "OP_EQUAL", "OP_EQUALVERIFY", "OP_RESERVED1", "OP_RESERVED2", "OP_1ADD", "OP_1SUB", "OP_2MUL",
"OP_2DIV", "OP_NEGATE", "OP_ABS", "OP_NOT", "OP_0NOTEQUAL", "OP_ADD", "OP_SUB", "OP_MUL", "OP_DIV",
"OP_MOD", "OP_LSHIFT", "OP_RSHIFT", "OP_BOOLAND", "OP_BOOLOR",
"OP_NUMEQUAL", "OP_NUMEQUALVERIFY", "OP_NUMNOTEQUAL", "OP_LESSTHAN",
"OP_GREATERTHAN", "OP_LESSTHANOREQUAL", "OP_GREATERTHANOREQUAL", "OP_MIN", "OP_MAX",
"OP_WITHIN", "OP_RIPEMD160", "OP_SHA1", "OP_SHA256", "OP_HASH160",
"OP_HASH256", "OP_CODESEPARATOR", "OP_CHECKSIG", "OP_CHECKSIGVERIFY", "OP_CHECKMULTISIG",
"OP_CHECKMULTISIGVERIFY",
"OP_NOP1", "OP_NOP2", "OP_NOP3", "OP_NOP4", "OP_NOP5", "OP_NOP6", "OP_NOP7", "OP_NOP8", "OP_NOP9", "OP_NOP10",
("OP_INVALIDOPCODE", 0xFF),
])
def script_GetOp(bytes):
i = 0
while i < len(bytes):
vch = None
opcode = ord(bytes[i])
i += 1
if opcode <= opcodes.OP_PUSHDATA4:
nSize = opcode
if opcode == opcodes.OP_PUSHDATA1:
if i + 1 > len(bytes):
vch = "_INVALID_NULL"
i = len(bytes)
else:
nSize = ord(bytes[i])
i += 1
elif opcode == opcodes.OP_PUSHDATA2:
if i + 2 > len(bytes):
vch = "_INVALID_NULL"
i = len(bytes)
else:
(nSize,) = struct.unpack_from('<H', bytes, i)
i += 2
elif opcode == opcodes.OP_PUSHDATA4:
if i + 4 > len(bytes):
vch = "_INVALID_NULL"
i = len(bytes)
else:
(nSize,) = struct.unpack_from('<I', bytes, i)
i += 4
if i+nSize > len(bytes):
vch = "_INVALID_"+bytes[i:]
i = len(bytes)
else:
vch = bytes[i:i+nSize]
i += nSize
yield (opcode, vch)
def script_GetOpName(opcode):
try:
return (opcodes.whatis(opcode)).replace("OP_", "")
except KeyError:
return "InvalidOp_"+str(opcode)
def decode_script(bytes):
result = ''
for (opcode, vch) in script_GetOp(bytes):
if len(result) > 0: result += " "
if opcode <= opcodes.OP_PUSHDATA4:
result += "%d:"%(opcode,)
result += short_hex(vch)
else:
result += script_GetOpName(opcode)
return result
def match_decoded(decoded, to_match):
if len(decoded) != len(to_match):
return False;
for i in range(len(decoded)):
if to_match[i] == opcodes.OP_PUSHDATA4 and decoded[i][0] <= opcodes.OP_PUSHDATA4:
continue
if to_match[i] != decoded[i][0]:
return False
return True
def extract_public_key(bytes, version='\x00'):
try:
decoded = [ x for x in script_GetOp(bytes) ]
except struct.error:
return "(None)"
match = [ opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4 ]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1], version=version)
match = [ opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG ]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
match = [ opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG ]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
multisigs = [
[ opcodes.OP_1, opcodes.OP_PUSHDATA4, opcodes.OP_1, opcodes.OP_CHECKMULTISIG ],
[ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ],
[ opcodes.OP_3, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
]
for match in multisigs:
if match_decoded(decoded, match):
return "["+','.join([public_key_to_bc_address(decoded[i][1]) for i in range(1,len(decoded)-1)])+"]"
match = [ opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL ]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[1][1], version="\x05")
return "(None)"