def deserialize_header(self, s):
h = {}
h['version'] = hex_to_int(s[0:4])
h['prev_block_hash'] = hash_encode(s[4:36])
h['merkle_root'] = hash_encode(s[36:68])
h['claim_trie_root'] = hash_encode(s[68:100])
h['timestamp'] = hex_to_int(s[100:104])
h['bits'] = hex_to_int(s[104:108])
h['nonce'] = hash_encode(s[108:140])
return h
def tx_response(self, response):
params, result = self.parse_response(response)
if not params:
return
tx_hash, tx_height = params
assert tx_hash == hash_encode(Hash(result.decode('hex')))
tx = Transaction(result)
try:
tx.deserialize()
except Exception:
log.info("cannot deserialize transaction, skipping: %s", tx_hash)
return
self.wallet.receive_tx_callback(tx_hash, tx, tx_height)
self.requested_tx.remove((tx_hash, tx_height))
log.info("received tx %s height: %d bytes: %d", tx_hash, tx_height, len(tx.raw))
# callbacks
self.network.trigger_callback('new_transaction', tx)
if not self.requested_tx:
self.network.trigger_callback('updated')
def parse_input(vds):
d = {}
prevout_hash = hash_encode(vds.read_bytes(32))
prevout_n = vds.read_uint32()
scriptSig = vds.read_bytes(vds.read_compact_size())
d['scriptSig'] = scriptSig.encode('hex')
sequence = vds.read_uint32()
if prevout_hash == '00' * 32:
d['is_coinbase'] = True
else:
d['is_coinbase'] = False
d['prevout_hash'] = prevout_hash
d['prevout_n'] = prevout_n
d['sequence'] = sequence
d['pubkeys'] = []
d['signatures'] = {}
d['address'] = None
if scriptSig:
parse_scriptSig(d, scriptSig)
return d
def hash_merkle_root(self, merkle_s, target_hash, pos):
h = hash_decode(target_hash)
for i, item in enumerate(merkle_s):
h = Hash(hash_decode(item) +
h) if ((pos >> i) & 1) else Hash(h + hash_decode(item))
return hash_encode(h)
def pow_hash_header(self, header):
if header is None:
return '0' * 64
return hash_encode(Hash(self.serialize_header(header).decode('hex')))
