import time, threading
+import hashlib
+encode = lambda x: x[::-1].encode('hex')
+decode = lambda x: x.decode('hex')[::-1]
+Hash = lambda x: hashlib.sha256(hashlib.sha256(x).digest()).digest()
+
+def rev_hex(s):
+ return s.decode('hex')[::-1].encode('hex')
+
+def int_to_hex(i, length=1):
+ s = hex(i)[2:].rstrip('L')
+ s = "0"*(2*length - len(s)) + s
+ return rev_hex(s)
+
+def header_to_string(res):
+ s = int_to_hex(res.get('version'),4) \
+ + rev_hex(res.get('prev_block_hash')) \
+ + rev_hex(res.get('merkle_root')) \
+ + int_to_hex(int(res.get('timestamp')),4) \
+ + int_to_hex(int(res.get('bits')),4) \
+ + int_to_hex(int(res.get('nonce')),4)
+ return s
+
+
class AbeStore(Datastore_class):
def __init__(self, config):
return out
+ def get_chunk(self, index):
+ sql = """
+ SELECT
+ block_hash,
+ block_version,
+ block_hashMerkleRoot,
+ block_nTime,
+ block_nBits,
+ block_nNonce,
+ block_height,
+ prev_block_hash,
+ block_height
+ FROM chain_summary
+ WHERE block_height >= %d AND block_height< %d AND in_longest = 1"""%(index*2016, (index+1)*2016)
+
+ out = self.safe_sql(sql)
+ msg = ''
+ for row in out:
+ (block_hash, block_version, hashMerkleRoot, nTime, nBits, nNonce, height, prev_block_hash, block_height) \
+ = ( self.hashout_hex(row[0]), int(row[1]), self.hashout_hex(row[2]), int(row[3]), int(row[4]), int(row[5]), int(row[6]), self.hashout_hex(row[7]), int(row[8]) )
+ h = {"block_height":block_height, "version":block_version, "prev_block_hash":prev_block_hash,
+ "merkle_root":hashMerkleRoot, "timestamp":nTime, "bits":nBits, "nonce":nNonce}
+
+ if h.get('block_height')==0: h['prev_block_hash'] = "0"*64
+ msg += header_to_string(h)
+
+ #print "hash", encode(Hash(msg.decode('hex')))
+ #if h.get('block_height')==1:break
+
+ print "get_chunk", index, len(msg)
+ return msg
+
+
+
def get_tx_merkle(self, tx_hash):
out = self.safe_sql("""
block_height = int(out[0][0])
merkle = []
+ tx_pos = None
+
# list all tx in block
for row in self.safe_sql("""
SELECT DISTINCT tx_id, tx_pos, tx_hash
FROM txin_detail
WHERE block_id = ?
ORDER BY tx_pos""", (block_id,)):
- tx_id, tx_pos, tx_h = row
- merkle.append(tx_h)
+ _id, _pos, _hash = row
+ merkle.append(_hash)
+ if _hash == tx_hash: tx_pos = int(_pos)
# find subset.
# TODO: do not compute this on client request, better store the hash tree of each block in a database...
- import hashlib
- encode = lambda x: x[::-1].encode('hex')
- decode = lambda x: x.decode('hex')[::-1]
- Hash = lambda x: hashlib.sha256(hashlib.sha256(x).digest()).digest()
merkle = map(decode, merkle)
target_hash = decode(tx_hash)
if len(merkle)%2: merkle.append( merkle[-1] )
n = []
while merkle:
+ new_hash = Hash( merkle[0] + merkle[1] )
if merkle[0] == target_hash:
- s.append( "L" + encode(merkle[1]))
- n.append( target_hash )
+ s.append( encode(merkle[1]))
+ target_hash = new_hash
elif merkle[1] == target_hash:
- s.append( "R" + encode(merkle[0]))
- n.append( target_hash)
- else:
- n.append( Hash( merkle[0] + merkle[1] ) )
+ s.append( encode(merkle[0]))
+ target_hash = new_hash
+ n.append( new_hash )
merkle = merkle[2:]
merkle = n
# send result
- return {"block_height":block_height,"merkle":s}
+ return {"block_height":block_height, "merkle":s, "pos":tx_pos}
with store.dblock:
store.catch_up()
store.memorypool_update()
- block_number = store.get_block_number(store.chain_id)
- return block_number
+ height = store.get_block_number( store.chain_id )
+
+ block_header = store.get_block_header( height )
+ return block_header
def __init__(self, config):
Processor.__init__(self)
self.store = AbeStore(config)
- self.block_number = -1
self.watched_addresses = []
# catch_up first
- n = self.store.main_iteration()
- print "blockchain: %d blocks"%n
+ self.block_header = self.store.main_iteration()
+ self.block_number = self.block_header.get('block_height')
+ print "blockchain: %d blocks"%self.block_number
threading.Timer(10, self.run_store_iteration).start()
if method == 'blockchain.numblocks.subscribe':
result = self.block_number
+ elif method == 'blockchain.headers.subscribe':
+ result = self.block_header
+
elif method == 'blockchain.address.subscribe':
try:
address = params[0]
error = str(e) + ': %d'% height
print "error:", error
+ elif method == 'blockchain.block.get_chunk':
+ try:
+ index = params[0]
+ result = self.store.get_chunk( index )
+ except BaseException, e:
+ error = str(e) + ': %d'% index
+ print "error:", error
+
elif method == 'blockchain.transaction.broadcast':
txo = self.store.send_tx(params[0])
print "sent tx:", txo
def run_store_iteration(self):
try:
- block_number = self.store.main_iteration()
+ block_header = self.store.main_iteration()
except:
traceback.print_exc(file=sys.stdout)
print "terminating"
print "exit timer"
return
- if self.block_number != block_number:
- self.block_number = block_number
+ if self.block_number != block_header.get('block_height'):
+ self.block_number = block_header.get('block_height')
print "block number:", self.block_number
self.push_response({ 'id': None, 'method':'blockchain.numblocks.subscribe', 'params':[self.block_number] })
+ if self.block_header != block_header:
+ self.block_header = block_header
+ self.push_response({ 'id': None, 'method':'blockchain.headers.subscribe', 'params':[self.block_header] })
+
while True:
try:
addr = self.store.address_queue.get(False)
git://git.novaco.in / electrum-server.git / blobdiff