X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=backends%2Fabe%2F__init__.py;h=2e4e806e4d6c3188402b2f8e07023411ea4ca0e9;hb=d600c3be009f131a35a622bc83e1ca9d40c241d7;hp=40e192757a722a561a30ae8548ad7abf6691026f;hpb=f331a62d89f3f09f0834514e5c5e67306495c706;p=electrum-server.git diff --git a/backends/abe/__init__.py b/backends/abe/__init__.py index 40e1927..2e4e806 100644 --- a/backends/abe/__init__.py +++ b/backends/abe/__init__.py @@ -10,6 +10,29 @@ from Queue import Queue 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): @@ -35,7 +58,8 @@ class AbeStore(Datastore_class): Datastore_class.__init__(self,args) - self.chain_id = self.datadirs[0]["chain_id"]; + # Use 1 (Bitcoin) if chain_id is not sent + self.chain_id = self.datadirs[0]["chain_id"] or 1 print 'Coin chain_id = %d' % self.chain_id self.sql_limit = int( config.get('database','limit') ) @@ -47,6 +71,7 @@ class AbeStore(Datastore_class): self.dblock = thread.allocate_lock() self.last_tx_id = 0 + self.known_mempool_hashes = [] def import_tx(self, tx, is_coinbase): @@ -379,37 +404,161 @@ class AbeStore(Datastore_class): return status + def get_block_header(self, block_height): + out = self.safe_sql(""" + SELECT + block_hash, + block_version, + block_hashMerkleRoot, + block_nTime, + block_nBits, + block_nNonce, + block_height, + prev_block_hash, + block_id + FROM chain_summary + WHERE block_height = %d AND in_longest = 1"""%block_height) + + if not out: raise BaseException("block not found") + row = out[0] + (block_hash, block_version, hashMerkleRoot, nTime, nBits, nNonce, height,prev_block_hash, block_id) \ + = ( 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]) ) + + out = {"block_height":block_height, "version":block_version, "prev_block_hash":prev_block_hash, + "merkle_root":hashMerkleRoot, "timestamp":nTime, "bits":nBits, "nonce":nNonce} + 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(""" + SELECT block_tx.block_id FROM tx + JOIN block_tx on tx.tx_id = block_tx.tx_id + JOIN chain_summary on chain_summary.block_id = block_tx.block_id + WHERE tx_hash='%s' AND in_longest = 1"""%tx_hash) + block_id = out[0] + + # get block height + out = self.safe_sql("SELECT block_height FROM chain_summary WHERE block_id = %d AND in_longest = 1"%block_id) + + if not out: raise BaseException("block not found") + 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,)): + _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... + + merkle = map(decode, merkle) + target_hash = decode(tx_hash) + + s = [] + while len(merkle) != 1: + 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( encode(merkle[1])) + target_hash = new_hash + elif merkle[1] == target_hash: + 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, "pos":tx_pos} + + + def memorypool_update(store): ds = BCDataStream.BCDataStream() - postdata = dumps({"method": 'getmemorypool', 'params': [], 'id':'jsonrpc'}) - + postdata = dumps({"method": 'getrawmempool', 'params': [], 'id':'jsonrpc'}) respdata = urllib.urlopen(store.bitcoind_url, postdata).read() r = loads(respdata) if r['error'] != None: + print r['error'] return - v = r['result'].get('transactions') - for hextx in v: + mempool_hashes = r.get('result') + for tx_hash in mempool_hashes: + + if tx_hash in store.known_mempool_hashes: continue + store.known_mempool_hashes.append(tx_hash) + + postdata = dumps({"method": 'getrawtransaction', 'params': [tx_hash], 'id':'jsonrpc'}) + respdata = urllib.urlopen(store.bitcoind_url, postdata).read() + r = loads(respdata) + if r['error'] != None: + continue + hextx = r.get('result') ds.clear() ds.write(hextx.decode('hex')) tx = deserialize.parse_Transaction(ds) tx['hash'] = util.double_sha256(tx['tx']) - tx_hash = store.hashin(tx['hash']) - + if store.tx_find_id_and_value(tx): pass else: tx_id = store.import_tx(tx, False) store.update_tx_cache(tx_id) #print tx_hash - + store.commit() + store.known_mempool_hashes = mempool_hashes def send_tx(self,tx): - postdata = dumps({"method": 'importtransaction', 'params': [tx], 'id':'jsonrpc'}) + postdata = dumps({"method": 'sendrawtransaction', 'params': [tx], 'id':'jsonrpc'}) respdata = urllib.urlopen(self.bitcoind_url, postdata).read() r = loads(respdata) if r['error'] != None: @@ -424,8 +573,10 @@ class AbeStore(Datastore_class): 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 @@ -450,12 +601,12 @@ class BlockchainProcessor(Processor): 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() @@ -471,6 +622,9 @@ class BlockchainProcessor(Processor): 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] @@ -488,11 +642,35 @@ class BlockchainProcessor(Processor): error = str(e) + ': ' + address print "error:", error + elif method == 'blockchain.block.get_header': + try: + height = params[0] + result = self.store.get_block_header( height ) + except BaseException, e: + 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 result = txo + elif method == 'blockchain.transaction.get_merkle': + try: + tx_hash = params[0] + result = self.store.get_tx_merkle(tx_hash ) + except BaseException, e: + error = str(e) + ': ' + tx_hash + print "error:", error + else: error = "unknown method:%s"%method @@ -513,7 +691,7 @@ class BlockchainProcessor(Processor): 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" @@ -523,10 +701,14 @@ class BlockchainProcessor(Processor): 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({ 'method':'blockchain.numblocks.subscribe', 'params':[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: @@ -535,7 +717,7 @@ class BlockchainProcessor(Processor): break if addr in self.watched_addresses: status = self.store.get_status( addr ) - self.push_response({ 'method':'blockchain.address.subscribe', 'params':[addr, status] }) + self.push_response({ 'id': None, 'method':'blockchain.address.subscribe', 'params':[addr, status] }) threading.Timer(10, self.run_store_iteration).start()