2 # Copyright(C) 2011 thomasv@gitorious
4 # This program is free software: you can redistribute it and/or modify
5 # it under the terms of the GNU Affero General Public License as
6 # published by the Free Software Foundation, either version 3 of the
7 # License, or (at your option) any later version.
9 # This program is distributed in the hope that it will be useful, but
10 # WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Affero General Public License for more details.
14 # You should have received a copy of the GNU Affero General Public
15 # License along with this program. If not, see
16 # <http://www.gnu.org/licenses/agpl.html>.
20 * server should check and return bitcoind status..
21 * improve txpoint sorting
22 * command to check cache
24 mempool transactions do not need to be added to the database; it slows it down
28 import time, json, socket, operator, thread, ast, sys,re
29 import psycopg2, binascii
31 from Abe.abe import hash_to_address, decode_check_address
32 from Abe.DataStore import DataStore as Datastore_class
33 from Abe import DataStore, readconf, BCDataStream, deserialize, util, base58
36 from json import dumps, loads
39 # we need to import electrum
40 sys.path.append('../client/')
41 from wallet import Wallet
42 from interface import Interface
45 config = ConfigParser.ConfigParser()
46 # set some defaults, which will be overwritten by the config file
47 config.add_section('server')
48 config.set('server','banner', 'Welcome to Electrum!')
49 config.set('server', 'host', 'localhost')
50 config.set('server', 'port', 50000)
51 config.set('server', 'password', '')
52 config.set('server', 'irc', 'yes')
53 config.set('server', 'ircname', 'Electrum server')
54 config.add_section('database')
55 config.set('database', 'type', 'psycopg2')
56 config.set('database', 'database', 'abe')
59 f = open('/etc/electrum.conf','r')
63 print "Could not read electrum.conf. I will use the default values."
66 f = open('/etc/electrum.banner','r')
67 config.set('server','banner', f.read())
72 password = config.get('server','password')
73 bitcoind_url = 'http://%s:%s@%s:%s/' % ( config.get('bitcoind','user'), config.get('bitcoind','password'), config.get('bitcoind','host'), config.get('bitcoind','port'))
79 sessions_sub_numblocks = [] # sessions that have subscribed to the service
81 dblock = thread.allocate_lock()
84 wallets = {} # for ultra-light clients such as bccapi
86 from Queue import Queue
88 output_queue = Queue()
89 address_queue = Queue()
91 class MyStore(Datastore_class):
93 def import_block(self, b, chain_ids=frozenset()):
94 block_id = super(MyStore, self).import_block(b, chain_ids)
95 print "import block", block_id
96 for pos in xrange(len(b['transactions'])):
97 tx = b['transactions'][pos]
99 tx['hash'] = util.double_sha256(tx['tx'])
100 tx_id = store.tx_find_id_and_value(tx)
102 self.update_tx_cache(tx_id)
104 print "error: import_block: no tx_id"
108 def update_tx_cache(self, txid):
109 inrows = self.get_tx_inputs(txid, False)
111 _hash = store.binout(row[6])
112 address = hash_to_address(chr(0), _hash)
113 if self.tx_cache.has_key(address):
114 print "cache: invalidating", address
115 self.tx_cache.pop(address)
116 address_queue.put(address)
118 outrows = self.get_tx_outputs(txid, False)
120 _hash = store.binout(row[6])
121 address = hash_to_address(chr(0), _hash)
122 if self.tx_cache.has_key(address):
123 print "cache: invalidating", address
124 self.tx_cache.pop(address)
125 address_queue.put(address)
127 def safe_sql(self,sql, params=(), lock=True):
129 if lock: dblock.acquire()
130 ret = self.selectall(sql,params)
131 if lock: dblock.release()
134 print "sql error", sql
137 def get_tx_outputs(self, tx_id, lock=True):
138 return self.safe_sql("""SELECT
140 txout.txout_scriptPubKey,
147 LEFT JOIN txin ON (txin.txout_id = txout.txout_id)
148 LEFT JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
149 LEFT JOIN tx nexttx ON (txin.tx_id = nexttx.tx_id)
150 WHERE txout.tx_id = %d
151 ORDER BY txout.txout_pos
152 """%(tx_id), (), lock)
154 def get_tx_inputs(self, tx_id, lock=True):
155 return self.safe_sql(""" SELECT
159 COALESCE(prevtx.tx_hash, u.txout_tx_hash),
161 COALESCE(txout.txout_pos, u.txout_pos),
164 LEFT JOIN txout ON (txout.txout_id = txin.txout_id)
165 LEFT JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
166 LEFT JOIN tx prevtx ON (txout.tx_id = prevtx.tx_id)
167 LEFT JOIN unlinked_txin u ON (u.txin_id = txin.txin_id)
168 WHERE txin.tx_id = %d
169 ORDER BY txin.txin_pos
170 """%(tx_id,), (), lock)
172 def get_address_out_rows(self, dbhash):
173 return self.safe_sql(""" SELECT
183 FROM chain_candidate cc
184 JOIN block b ON (b.block_id = cc.block_id)
185 JOIN block_tx ON (block_tx.block_id = b.block_id)
186 JOIN tx ON (tx.tx_id = block_tx.tx_id)
187 JOIN txin ON (txin.tx_id = tx.tx_id)
188 JOIN txout prevout ON (txin.txout_id = prevout.txout_id)
189 JOIN pubkey ON (pubkey.pubkey_id = prevout.pubkey_id)
190 WHERE pubkey.pubkey_hash = ?
191 AND cc.in_longest = 1""", (dbhash,))
193 def get_address_out_rows_memorypool(self, dbhash):
194 return self.safe_sql(""" SELECT
201 JOIN txin ON (txin.tx_id = tx.tx_id)
202 JOIN txout prevout ON (txin.txout_id = prevout.txout_id)
203 JOIN pubkey ON (pubkey.pubkey_id = prevout.pubkey_id)
204 WHERE pubkey.pubkey_hash = ? """, (dbhash,))
206 def get_address_in_rows(self, dbhash):
207 return self.safe_sql(""" SELECT
217 FROM chain_candidate cc
218 JOIN block b ON (b.block_id = cc.block_id)
219 JOIN block_tx ON (block_tx.block_id = b.block_id)
220 JOIN tx ON (tx.tx_id = block_tx.tx_id)
221 JOIN txout ON (txout.tx_id = tx.tx_id)
222 JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
223 WHERE pubkey.pubkey_hash = ?
224 AND cc.in_longest = 1""", (dbhash,))
226 def get_address_in_rows_memorypool(self, dbhash):
227 return self.safe_sql( """ SELECT
234 JOIN txout ON (txout.tx_id = tx.tx_id)
235 JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
236 WHERE pubkey.pubkey_hash = ? """, (dbhash,))
238 def get_history(self, addr):
240 cached_version = self.tx_cache.get( addr )
241 if cached_version is not None:
242 return cached_version
244 version, binaddr = decode_check_address(addr)
248 dbhash = self.binin(binaddr)
250 rows += self.get_address_out_rows( dbhash )
251 rows += self.get_address_in_rows( dbhash )
258 nTime, chain_id, height, is_in, blk_hash, tx_hash, tx_id, pos, value = row
260 print "cannot unpack row", row
262 tx_hash = self.hashout_hex(tx_hash)
265 "height": int(height),
267 "blk_hash": self.hashout_hex(blk_hash),
274 txpoints.append(txpoint)
275 known_tx.append(self.hashout_hex(tx_hash))
278 # todo: sort them really...
279 txpoints = sorted(txpoints, key=operator.itemgetter("nTime"))
283 rows += self.get_address_in_rows_memorypool( dbhash )
284 rows += self.get_address_out_rows_memorypool( dbhash )
285 address_has_mempool = False
288 is_in, tx_hash, tx_id, pos, value = row
289 tx_hash = self.hashout_hex(tx_hash)
290 if tx_hash in known_tx:
293 # this means that pending transactions were added to the db, even if they are not returned by getmemorypool
294 address_has_mempool = True
296 # this means pending transactions are returned by getmemorypool
297 if tx_hash not in self.mempool_keys:
300 #print "mempool", tx_hash
305 "blk_hash": 'mempool',
311 txpoints.append(txpoint)
314 for txpoint in txpoints:
315 tx_id = txpoint['tx_id']
318 inrows = self.get_tx_inputs(tx_id)
320 _hash = self.binout(row[6])
321 address = hash_to_address(chr(0), _hash)
322 txinputs.append(address)
323 txpoint['inputs'] = txinputs
325 outrows = self.get_tx_outputs(tx_id)
327 _hash = self.binout(row[6])
328 address = hash_to_address(chr(0), _hash)
329 txoutputs.append(address)
330 txpoint['outputs'] = txoutputs
332 # for all unspent inputs, I want their scriptpubkey. (actually I could deduce it from the address)
333 if not txpoint['is_in']:
334 # detect if already redeemed...
336 if row[6] == dbhash: break
339 #row = self.get_tx_output(tx_id,dbhash)
340 # pos, script, value, o_hash, o_id, o_pos, binaddr = row
341 # if not redeemed, we add the script
343 if not row[4]: txpoint['raw_scriptPubKey'] = row[1]
346 if not address_has_mempool:
347 self.tx_cache[addr] = txpoints
353 class Direct_Interface(Interface):
357 def handler(self, method, params = ''):
358 cmds = {'session.new':new_session,
359 'session.poll':poll_session,
360 'session.update':update_session,
361 'blockchain.transaction.broadcast':send_tx,
362 'blockchain.address.get_history':store.get_history
365 return func( params )
370 postdata = dumps({"method": 'importtransaction', 'params': [tx], 'id':'jsonrpc'})
371 respdata = urllib.urlopen(bitcoind_url, postdata).read()
373 if r['error'] != None:
374 out = "error: transaction rejected by memorypool\n"+tx
381 def random_string(N):
382 import random, string
383 return ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(N))
393 return 'wrong password'
397 return repr( len(sessions) )
399 return 'wrong password'
407 return 'wrong password'
409 def get_cache(pw,addr):
411 return store.tx_cache.get(addr)
413 return 'wrong password'
416 def poll_session(session_id):
417 session = sessions.get(session_id)
419 print time.asctime(), "session not found", session_id
420 out = repr( (-1, {}))
423 addresses = session['addresses']
424 session['last_time'] = time.time()
427 for addr in addresses:
428 if store.tx_cache.get( addr ) is not None: k += 1
429 status = get_address_status( addr )
430 last_status = addresses.get( addr )
431 if last_status != status:
432 addresses[addr] = status
435 sessions[session_id]['addresses'] = addresses
436 out = repr( (block_number, ret ) )
437 t2 = time.time() - t1
439 print "high load:", session_id, "%d/%d"%(k,len(addresses)), t2
444 def do_update_address(addr):
445 # an address was involved in a transaction; we check if it was subscribed to in a session
446 # the address can be subscribed in several sessions; the cache should ensure that we don't do redundant requests
447 for session_id in sessions.keys():
448 session = sessions[session_id]
449 if session.get('type') != 'subscribe': continue
450 addresses = session['addresses'].keys()
452 if addr in addresses:
453 print "address ", addr, "is watched by", session_id
454 status = get_address_status( addr )
455 last_status = session['addresses'][addr]
456 if last_status != status:
457 print "sending new status for %s:"%addr, status
458 send_status(session_id,addr,status)
459 sessions[session_id]['addresses'][addr] = status
462 def get_address_status(addr):
463 # get address status, i.e. the last block for that address.
464 tx_points = store.get_history(addr)
468 lastpoint = tx_points[-1]
469 status = lastpoint['blk_hash']
470 # this is a temporary hack; move it up once old clients have disappeared
471 if status == 'mempool': # and session['version'] != "old":
472 status = status + ':%d'% len(tx_points)
476 def send_numblocks(session_id):
477 out = json.dumps( {'method':'numblocks.subscribe', 'result':block_number} )
478 output_queue.put((session_id, out))
480 def send_status(session_id, address, status):
481 out = json.dumps( { 'method':'address.subscribe', 'address':address, 'status':status } )
482 output_queue.put((session_id, out))
484 def subscribe_to_numblocks(session_id):
485 sessions_sub_numblocks.append(session_id)
486 send_numblocks(session_id)
488 def subscribe_to_address(session_id, address):
489 status = get_address_status(address)
490 sessions[session_id]['type'] = 'subscribe'
491 sessions[session_id]['addresses'][address] = status
492 sessions[session_id]['last_time'] = time.time()
493 send_status(session_id, address, status)
495 def new_session(version, addresses):
496 session_id = random_string(10)
497 sessions[session_id] = { 'addresses':{}, 'version':version }
499 sessions[session_id]['addresses'][a] = ''
500 out = repr( (session_id, config.get('server','banner').replace('\\n','\n') ) )
501 sessions[session_id]['last_time'] = time.time()
504 def update_session(session_id,addresses):
505 sessions[session_id]['addresses'] = {}
507 sessions[session_id]['addresses'][a] = ''
508 sessions[session_id]['last_time'] = time.time()
511 def native_server_thread():
512 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
513 s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
514 s.bind((config.get('server','host'), config.getint('server','port')))
517 conn, addr = s.accept()
519 thread.start_new_thread(native_client_thread, (addr, conn,))
521 # can't start new thread if there is no memory..
522 traceback.print_exc(file=sys.stdout)
525 def native_client_thread(ipaddr,conn):
526 #print "client thread", ipaddr
536 msg = msg.split('#', 1)[0]
539 cmd, data = ast.literal_eval(msg)
541 print "syntax error", repr(msg), ipaddr
545 out = do_command(cmd, data, ipaddr)
547 #print ipaddr, cmd, len(out)
551 print "error, could not send"
558 # used by the native handler
559 def do_command(cmd, data, ipaddr):
561 timestr = time.strftime("[%d/%m/%Y-%H:%M:%S]")
564 out = "%d"%block_number
566 elif cmd in ['session','new_session']:
569 addresses = ast.literal_eval(data)
572 version, addresses = ast.literal_eval(data)
573 if version[0]=="0": version = "v" + version
577 print timestr, "new session", ipaddr, addresses[0] if addresses else addresses, len(addresses), version
578 out = new_session(version, addresses)
580 elif cmd=='update_session':
582 session_id, addresses = ast.literal_eval(data)
586 print timestr, "update session", ipaddr, addresses[0] if addresses else addresses, len(addresses)
587 out = update_session(session_id,addresses)
589 elif cmd == 'bccapi_login':
592 v, k = ast.literal_eval(data)
593 master_public_key = k.decode('hex') # todo: sanitize. no need to decode twice...
594 print master_public_key
595 wallet_id = random_string(10)
596 w = Wallet( Direct_Interface() )
597 w.master_public_key = master_public_key.decode('hex')
599 wallets[wallet_id] = w
601 print "wallets", wallets
603 elif cmd == 'bccapi_getAccountInfo':
604 from wallet import int_to_hex
605 v, wallet_id = ast.literal_eval(data)
606 w = wallets.get(wallet_id)
608 num = len(w.addresses)
609 c, u = w.get_balance()
610 out = int_to_hex(num,4) + int_to_hex(c,8) + int_to_hex( c+u, 8 )
611 out = out.decode('hex')
616 elif cmd == 'bccapi_getAccountStatement':
617 from wallet import int_to_hex
618 v, wallet_id = ast.literal_eval(data)
619 w = wallets.get(wallet_id)
621 num = len(w.addresses)
622 c, u = w.get_balance()
623 total_records = num_records = 0
624 out = int_to_hex(num,4) + int_to_hex(c,8) + int_to_hex( c+u, 8 ) + int_to_hex( total_records ) + int_to_hex( num_records )
625 out = out.decode('hex')
630 elif cmd == 'bccapi_getSendCoinForm':
633 elif cmd == 'bccapi_submitTransaction':
637 out = poll_session(data)
642 out = repr( store.get_history( address ) )
649 print timestr, "sent tx:", ipaddr, out
655 out = repr(peer_list.values())
664 ####################################################################
666 def tcp_server_thread():
667 thread.start_new_thread(process_input_queue, ())
668 thread.start_new_thread(process_output_queue, ())
670 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
671 s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
672 s.bind((config.get('server','host'), 50001))
675 conn, addr = s.accept()
677 thread.start_new_thread(tcp_client_thread, (addr, conn,))
679 # can't start new thread if there is no memory..
680 traceback.print_exc(file=sys.stdout)
683 def close_session(session_id):
684 print "lost connection", session_id
685 sessions.pop(session_id)
686 if session_id in sessions_sub_numblocks:
687 sessions_sub_numblocks.remove(session_id)
690 # one thread per client. put requests in a queue.
691 def tcp_client_thread(ipaddr,conn):
692 """ use a persistent connection. put commands in a queue."""
693 print "persistent client thread", ipaddr
696 session_id = random_string(10)
697 sessions[session_id] = { 'conn':conn, 'addresses':{}, 'version':'unknown' }
708 close_session(session_id)
721 close_session(session_id)
726 print "json error", repr(c)
729 cmd = c.get('method')
730 data = c.get('params')
732 print "syntax error", repr(c), ipaddr
736 input_queue.put((session_id, cmd, data))
740 # read commands from the input queue. perform requests, etc. this should be called from the main thread.
741 def process_input_queue():
743 session_id, cmd, data = input_queue.get()
744 if session_id not in sessions.keys():
747 if cmd == 'address.subscribe':
748 subscribe_to_address(session_id,data)
749 elif cmd == 'numblocks.subscribe':
750 subscribe_to_numblocks(session_id)
751 elif cmd == 'client.version':
752 sessions[session_id]['version'] = data
753 elif cmd == 'server.banner':
754 out = json.dumps( { 'method':'server.banner', 'result':config.get('server','banner').replace('\\n','\n') } )
755 elif cmd == 'server.peers':
756 out = json.dumps( { 'method':'server.peers', 'result':peer_list.values() } )
757 elif cmd == 'address.get_history':
759 out = json.dumps( { 'method':'address.get_history', 'address':address, 'result':store.get_history( address ) } )
760 elif cmd == 'transaction.broadcast':
762 print "sent tx:", txo
763 out = json.dumps( { 'method':'transaction.broadcast', 'result':txo } )
765 print "unknown command", cmd
767 output_queue.put((session_id, out))
769 # this is a separate thread
770 def process_output_queue():
772 session_id, out = output_queue.get()
773 session = sessions.get(session_id)
776 conn = session.get('conn')
779 close_session(session_id)
784 ####################################################################
787 def memorypool_update(store):
789 ds = BCDataStream.BCDataStream()
790 previous_transactions = store.mempool_keys
791 store.mempool_keys = []
793 postdata = dumps({"method": 'getmemorypool', 'params': [], 'id':'jsonrpc'})
794 respdata = urllib.urlopen(bitcoind_url, postdata).read()
796 if r['error'] != None:
799 v = r['result'].get('transactions')
802 ds.write(hextx.decode('hex'))
803 tx = deserialize.parse_Transaction(ds)
804 tx['hash'] = util.double_sha256(tx['tx'])
805 tx_hash = store.hashin(tx['hash'])
807 store.mempool_keys.append(tx_hash)
808 if store.tx_find_id_and_value(tx):
811 tx_id = store.import_tx(tx, False)
812 store.update_tx_cache(tx_id)
817 def clean_session_thread():
821 for k,s in sessions.items():
822 if s.get('type') == 'subscribe': continue
826 print "lost session", k
831 NICK = 'E_'+random_string(10)
835 s.connect(('irc.freenode.net', 6667))
836 s.send('USER electrum 0 * :'+config.get('server','host')+' '+config.get('server','ircname')+'\n')
837 s.send('NICK '+NICK+'\n')
838 s.send('JOIN #electrum\n')
839 sf = s.makefile('r', 0)
843 line = line.rstrip('\r\n')
846 s.send('PONG '+line[1]+'\n')
847 elif '353' in line: # answer to /names
848 k = line.index('353')
849 for item in line[k+1:]:
850 if item[0:2] == 'E_':
851 s.send('WHO %s\n'%item)
852 elif '352' in line: # answer to /who
853 # warning: this is a horrible hack which apparently works
854 k = line.index('352')
856 ip = socket.gethostbyname(ip)
859 peer_list[name] = (ip,host)
860 if time.time() - t > 5*60:
861 s.send('NAMES #electrum\n')
865 traceback.print_exc(file=sys.stdout)
872 def http_server_thread(store):
873 # see http://code.google.com/p/jsonrpclib/
874 from SocketServer import ThreadingMixIn
875 from jsonrpclib.SimpleJSONRPCServer import SimpleJSONRPCServer
876 class SimpleThreadedJSONRPCServer(ThreadingMixIn, SimpleJSONRPCServer): pass
877 server = SimpleThreadedJSONRPCServer(( config.get('server','host'), 8081))
878 server.register_function(lambda : peer_list.values(), 'peers')
879 server.register_function(cmd_stop, 'stop')
880 server.register_function(cmd_load, 'load')
881 server.register_function(lambda : block_number, 'blocks')
882 server.register_function(clear_cache, 'clear_cache')
883 server.register_function(get_cache, 'get_cache')
884 server.register_function(send_tx, 'blockchain.transaction.broadcast')
885 server.register_function(store.get_history, 'blockchain.address.get_history')
886 server.register_function(new_session, 'session.new')
887 server.register_function(update_session, 'session.update')
888 server.register_function(poll_session, 'session.poll')
889 server.serve_forever()
895 if __name__ == '__main__':
899 server = jsonrpclib.Server('http://%s:8081'%config.get('server','host'))
902 out = server.load(password)
906 out = server.stop(password)
907 elif cmd == 'clear_cache':
908 out = server.clear_cache(password)
909 elif cmd == 'get_cache':
910 out = server.get_cache(password,sys.argv[2])
912 out = server.blockchain.address.get_history(sys.argv[2])
914 out = server.blockchain.transaction.broadcast(sys.argv[2])
916 out = server.blocks()
918 out = "Unknown command: '%s'" % cmd
923 print "starting Electrum server"
925 conf = DataStore.CONFIG_DEFAULTS
926 args, argv = readconf.parse_argv( [], conf)
927 args.dbtype= config.get('database','type')
928 if args.dbtype == 'sqlite3':
929 args.connect_args = { 'database' : config.get('database','database') }
930 elif args.dbtype == 'MySQLdb':
931 args.connect_args = { 'db' : config.get('database','database'), 'user' : config.get('database','username'), 'passwd' : config.get('database','password') }
932 elif args.dbtype == 'psycopg2':
933 args.connect_args = { 'database' : config.get('database','database') }
934 store = MyStore(args)
936 store.mempool_keys = {}
938 # supported protocols
939 thread.start_new_thread(native_server_thread, ())
940 thread.start_new_thread(tcp_server_thread, ())
941 thread.start_new_thread(http_server_thread, (store,))
943 thread.start_new_thread(clean_session_thread, ())
945 if (config.get('server','irc') == 'yes' ):
946 thread.start_new_thread(irc_thread, ())
952 memorypool_update(store)
954 block_number = store.get_block_number(1)
955 if block_number != old_block_number:
956 old_block_number = block_number
957 for session_id in sessions_sub_numblocks:
958 send_numblocks(session_id)
961 print "IOError: cannot reach bitcoind"
964 traceback.print_exc(file=sys.stdout)
972 addr = address_queue.get(False)
975 do_update_address(addr)
979 print "server stopped"