version 0.40a
[electrum-server.git] / server.py
index 0b8983d..9b2fc49 100755 (executable)
--- a/server.py
+++ b/server.py
@@ -20,18 +20,27 @@ Todo:
    * server should check and return bitcoind status..
    * improve txpoint sorting
    * command to check cache
+
+ mempool transactions do not need to be added to the database; it slows it down
 """
 
 
 import time, socket, operator, thread, ast, sys,re
 import psycopg2, binascii
-import bitcoinrpc
 
 from Abe.abe import hash_to_address, decode_check_address
 from Abe.DataStore import DataStore as Datastore_class
 from Abe import DataStore, readconf, BCDataStream,  deserialize, util, base58
 
 import ConfigParser
+from json import dumps, loads
+import urllib
+
+# we need to import electrum
+sys.path.append('../client/')
+from wallet import Wallet
+from interface import Interface
+
 
 config = ConfigParser.ConfigParser()
 # set some defaults, which will be overwritten by the config file
@@ -54,13 +63,23 @@ try:
 except:
     print "Could not read electrum.conf. I will use the default values."
 
+try:
+    f = open('/etc/electrum.banner','r')
+    config.set('server','banner', f.read())
+    f.close()
+except:
+    pass
+
+password = config.get('server','password')
+bitcoind_url = 'http://%s:%s@%s:%s/' % ( config.get('bitcoind','user'), config.get('bitcoind','password'), config.get('bitcoind','host'), config.get('bitcoind','port'))
+
 stopping = False
 block_number = -1
 sessions = {}
-sessions_last_time = {}
 dblock = thread.allocate_lock()
 peer_list = {}
 
+wallets = {} # for ultra-light clients such as bccapi
 
 class MyStore(Datastore_class):
 
@@ -74,14 +93,14 @@ class MyStore(Datastore_class):
             _hash = store.binout(row[6])
             address = hash_to_address(chr(0), _hash)
             if self.tx_cache.has_key(address):
-                print "cache: invalidating", address, self.ismempool
+                print "cache: invalidating", address
                 self.tx_cache.pop(address)
         outrows = self.get_tx_outputs(txid, False)
         for row in outrows:
             _hash = store.binout(row[6])
             address = hash_to_address(chr(0), _hash)
             if self.tx_cache.has_key(address):
-                print "cache: invalidating", address, self.ismempool
+                print "cache: invalidating", address
                 self.tx_cache.pop(address)
 
     def safe_sql(self,sql, params=(), lock=True):
@@ -195,7 +214,7 @@ class MyStore(Datastore_class):
               JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
              WHERE pubkey.pubkey_hash = ? """, (dbhash,))
 
-    def get_txpoints(self, addr):
+    def get_history(self, addr):
         
         if config.get('server','cache') == 'yes':
             cached_version = self.tx_cache.get( addr ) 
@@ -204,7 +223,8 @@ class MyStore(Datastore_class):
 
         version, binaddr = decode_check_address(addr)
         if binaddr is None:
-            return "err"
+            return None
+
         dbhash = self.binin(binaddr)
         rows = []
         rows += self.get_address_out_rows( dbhash )
@@ -251,14 +271,20 @@ class MyStore(Datastore_class):
             if tx_hash in known_tx:
                 continue
 
+            # this means that pending transactions were added to the db, even if they are not returned by getmemorypool
             address_has_mempool = True
+
+            # this means pending transactions are returned by getmemorypool
+            if tx_hash not in self.mempool_keys:
+                continue
+
             #print "mempool", tx_hash
             txpoint = {
                     "nTime":    0,
                     #"chain_id": 1,
                     "height":   0,
                     "is_in":    int(is_in),
-                    "blk_hash": 'mempool',
+                    "blk_hash": 'mempool', 
                     "tx_hash":  tx_hash,
                     "tx_id":    int(tx_id),
                     "pos":      int(pos),
@@ -305,24 +331,124 @@ class MyStore(Datastore_class):
         return txpoints
 
 
-    def get_status(self, addr):
-        # last block for an address.
-        tx_points = self.get_txpoints(addr)
-        if not tx_points:
-            return None
-        else:
-            return tx_points[-1]['blk_hash']
+
+class Direct_Interface(Interface):
+    def __init__(self):
+        pass
+
+    def handler(self, method, params = ''):
+        cmds = {'session.new':new_session,
+                'session.poll':poll_session,
+                'session.update':update_session,
+                'blockchain.transaction.broadcast':send_tx,
+                'blockchain.address.get_history':store.get_history
+                }
+        func = cmds[method]
+        return func( params )
+
 
 
 def send_tx(tx):
-    import bitcoinrpc
-    conn = bitcoinrpc.connect_to_local()
-    try:
-        v = conn.importtransaction(tx)
-    except:
-        v = "error: transaction rejected by memorypool"
-    return v
+    postdata = dumps({"method": 'importtransaction', 'params': [tx], 'id':'jsonrpc'})
+    respdata = urllib.urlopen(bitcoind_url, postdata).read()
+    r = loads(respdata)
+    if r['error'] != None:
+        out = "error: transaction rejected by memorypool"
+    else:
+        out = r['result']
+    return out
+
+
+
+def random_string(N):
+    import random, string
+    return ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(N))
+
+    
 
+def cmd_stop(data):
+    global stopping
+    if password == data:
+        stopping = True
+        return 'ok'
+    else:
+        return 'wrong password'
+
+def cmd_load(pw):
+    if password == pw:
+        return repr( len(sessions) )
+    else:
+        return 'wrong password'
+
+
+def clear_cache(pw):
+    if password == pw:
+        store.tx_cache = {}
+        return 'ok'
+    else:
+        return 'wrong password'
+
+def get_cache(pw,addr):
+    if password == pw:
+        return store.tx_cache.get(addr)
+    else:
+        return 'wrong password'
+
+
+def poll_session(session_id):
+    session = sessions.get(session_id)
+    if session is None:
+        print time.asctime(), "session not found", session_id
+        out = repr( (-1, {}))
+    else:
+        t1 = time.time()
+        addresses = session['addresses']
+        session['last_time'] = time.time()
+        ret = {}
+        k = 0
+        for addr in addresses:
+            if store.tx_cache.get( addr ) is not None: k += 1
+
+            # get addtess status, i.e. the last block for that address.
+            tx_points = store.get_history(addr)
+            if not tx_points:
+                status = None
+            else:
+                lastpoint = tx_points[-1]
+                status = lastpoint['blk_hash']
+                # this is a temporary hack; move it up once old clients have disappeared
+                if status == 'mempool' and session['version'] != "old":
+                    status = status + ':%d'% len(tx_points)
+
+            last_status = addresses.get( addr )
+            if last_status != status:
+                addresses[addr] = status
+                ret[addr] = status
+        if ret:
+            sessions[session_id]['addresses'] = addresses
+        out = repr( (block_number, ret ) )
+        t2 = time.time() - t1 
+        if t2 > 10:
+            print "high load:", session_id, "%d/%d"%(k,len(addresses)), t2
+
+        return out
+
+
+def new_session(version, addresses):
+    session_id = random_string(10)
+    sessions[session_id] = { 'addresses':{}, 'version':version }
+    for a in addresses:
+        sessions[session_id]['addresses'][a] = ''
+    out = repr( (session_id, config.get('server','banner').replace('\\n','\n') ) )
+    sessions[session_id]['last_time'] = time.time()
+    return out
+
+def update_session(session_id,addresses):
+    sessions[session_id]['addresses'] = {}
+    for a in addresses:
+        sessions[session_id]['addresses'][a] = ''
+    sessions[session_id]['last_time'] = time.time()
+    return 'ok'
 
 def listen_thread(store):
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@@ -331,11 +457,13 @@ def listen_thread(store):
     s.listen(1)
     while not stopping:
         conn, addr = s.accept()
-        thread.start_new_thread(client_thread, (addr, conn,))
+        try:
+            thread.start_new_thread(client_thread, (addr, conn,))
+        except:
+            # can't start new thread if there is no memory..
+            traceback.print_exc(file=sys.stdout)
+
 
-def random_string(N):
-    import random, string
-    return ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(N))
 
 def client_thread(ipaddr,conn):
     #print "client thread", ipaddr
@@ -345,90 +473,19 @@ def client_thread(ipaddr,conn):
         while 1:
             d = conn.recv(1024)
             msg += d
-            if d[-1]=='#':
+            if not d: 
+                break
+            if '#' in msg:
+                msg = msg.split('#', 1)[0]
                 break
-
-        #print msg
-
         try:
-            cmd, data = ast.literal_eval(msg[:-1])
+            cmd, data = ast.literal_eval(msg)
         except:
-            print "syntax error", repr(msg)
+            print "syntax error", repr(msg), ipaddr
             conn.close()
             return
 
-        if cmd=='b':
-            out = "%d"%block_number
-        elif cmd=='session':
-            session_id = random_string(10)
-            try:
-                addresses = ast.literal_eval(data)
-            except:
-                print "error"
-                conn.close()
-                return
-
-            print time.asctime(), "session", ipaddr, session_id, addresses[0] if addresses else addresses, len(addresses)
-
-            sessions[session_id] = {}
-            for a in addresses:
-                sessions[session_id][a] = ''
-            out = repr( (session_id, config.get('server','banner').replace('\\n','\n') ) )
-            sessions_last_time[session_id] = time.time()
-
-        elif cmd=='poll': 
-            session_id = data
-            addresses = sessions.get(session_id)
-            if addresses is None:
-                print time.asctime(), " Session not found", session_id, ipaddr
-                out = repr( (-1, {}))
-            else:
-                t1 = time.time()
-                sessions_last_time[session_id] = time.time()
-                ret = {}
-                k = 0
-                for addr in addresses:
-                    if store.tx_cache.get( addr ) is not None: k += 1
-                    status = store.get_status( addr )
-                    last_status = addresses.get( addr )
-                    if last_status != status:
-                        addresses[addr] = status
-                        ret[addr] = status
-                if ret:
-                    sessions[session_id] = addresses
-                out = repr( (block_number, ret ) )
-                t2 = time.time() - t1 
-                if t2 > 10:
-                    print "high load:", session_id, "%d/%d"%(k,len(addresses)), t2
-
-        elif cmd == 'h': 
-            # history
-            address = data
-            out = repr( store.get_txpoints( address ) )
-
-        elif cmd == 'load': 
-            if config.get('server','password') == data:
-                out = repr( len(sessions) )
-            else:
-                out = 'wrong password'
-
-        elif cmd =='tx':        
-            out = send_tx(data)
-
-        elif cmd == 'stop':
-            global stopping
-            if config.get('server','password') == data:
-                stopping = True
-                out = 'ok'
-            else:
-                out = 'wrong password'
-
-        elif cmd == 'peers':
-            out = repr(peer_list.values())
-
-        else:
-            out = None
-
+        out = do_command(cmd, data, ipaddr)
         if out:
             #print ipaddr, cmd, len(out)
             try:
@@ -438,29 +495,132 @@ def client_thread(ipaddr,conn):
 
     finally:
         conn.close()
-    
 
-ds = BCDataStream.BCDataStream()
+
+def do_command(cmd, data, ipaddr):
+
+    timestr = time.strftime("[%d/%m/%Y-%H:%M:%S]")
+
+    if cmd=='b':
+        out = "%d"%block_number
+
+    elif cmd in ['session','new_session']:
+        try:
+            if cmd == 'session':
+                addresses = ast.literal_eval(data)
+                version = "old"
+            else:
+                version, addresses = ast.literal_eval(data)
+                if version[0]=="0": version = "v" + version
+        except:
+            print "error", data
+            return None
+        print timestr, "new session", ipaddr, addresses[0] if addresses else addresses, len(addresses), version
+        out = new_session(version, addresses)
+
+    elif cmd=='update_session':
+        try:
+            session_id, addresses = ast.literal_eval(data)
+        except:
+            print "error"
+            return None
+        print timestr, "update session", ipaddr, addresses[0] if addresses else addresses, len(addresses)
+        out = update_session(session_id,addresses)
+
+    elif cmd == 'bccapi_login':
+        import electrum
+        print "data",data
+        v, k = ast.literal_eval(data)
+        master_public_key = k.decode('hex') # todo: sanitize. no need to decode twice...
+        print master_public_key
+        wallet_id = random_string(10)
+        w = Wallet( Direct_Interface() )
+        w.master_public_key = master_public_key.decode('hex')
+        w.synchronize()
+        wallets[wallet_id] = w
+        out = wallet_id
+        print "wallets", wallets
+
+    elif cmd == 'bccapi_getAccountInfo':
+        from wallet import int_to_hex
+        v, wallet_id = ast.literal_eval(data)
+        w = wallets.get(wallet_id)
+        if w is not None:
+            num = len(w.addresses)
+            c, u = w.get_balance()
+            out = int_to_hex(num,4) + int_to_hex(c,8) + int_to_hex( c+u, 8 )
+            out = out.decode('hex')
+        else:
+            print "error",data
+            out = "error"
+
+    elif cmd == 'bccapi_getAccountStatement':
+        from wallet import int_to_hex
+        v, wallet_id = ast.literal_eval(data)
+        w = wallets.get(wallet_id)
+        if w is not None:
+            num = len(w.addresses)
+            c, u = w.get_balance()
+            total_records = num_records = 0
+            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 )
+            out = out.decode('hex')
+        else:
+            print "error",data
+            out = "error"
+
+    elif cmd == 'bccapi_getSendCoinForm':
+        out = ''
+
+    elif cmd == 'bccapi_submitTransaction':
+        out = ''
+            
+    elif cmd=='poll': 
+        out = poll_session(data)
+
+    elif cmd == 'h': 
+        # history
+        address = data
+        out = repr( store.get_history( address ) )
+
+    elif cmd == 'load': 
+        out = cmd_load(data)
+
+    elif cmd =='tx':
+        out = send_tx(data)
+        print timestr, "sent tx:", ipaddr, out
+
+    elif cmd == 'stop':
+        out = cmd_stop(data)
+
+    elif cmd == 'peers':
+        out = repr(peer_list.values())
+
+    else:
+        out = None
+
+    return out
 
 
 
 
 def memorypool_update(store):
-    conn = bitcoinrpc.connect_to_local()
-    try:
-        v = conn.getmemorypool()
-    except:
-        print "cannot contact bitcoin daemon"
+    ds = BCDataStream.BCDataStream()
+    store.mempool_keys = []
+
+    postdata = dumps({"method": 'getmemorypool', 'params': [], 'id':'jsonrpc'})
+    respdata = urllib.urlopen(bitcoind_url, postdata).read()
+    r = loads(respdata)
+    if r['error'] != None:
         return
-    v = v['transactions']
+
+    v = r['result'].get('transactions')
     for hextx in v:
         ds.clear()
         ds.write(hextx.decode('hex'))
         tx = deserialize.parse_Transaction(ds)
-        #print "new tx",tx
-
         tx['hash'] = util.double_sha256(tx['tx'])
-            
+        tx_hash = tx['hash'][::-1].encode('hex')
+        store.mempool_keys.append(tx_hash)
         if store.tx_find_id_and_value(tx):
             pass
         else:
@@ -470,16 +630,14 @@ def memorypool_update(store):
 
 
 
-
 def clean_session_thread():
     while not stopping:
         time.sleep(30)
         t = time.time()
-        for k,t0 in sessions_last_time.items():
+        for k,s in sessions.items():
+            t0 = s['last_time']
             if t - t0 > 5*60:
-                print time.asctime(), "lost session",k
                 sessions.pop(k)
-                sessions_last_time.pop(k)
             
 
 def irc_thread():
@@ -524,33 +682,54 @@ def irc_thread():
             s.close()
 
 
+
+def jsonrpc_thread(store):
+    # see http://code.google.com/p/jsonrpclib/
+    from SocketServer import ThreadingMixIn
+    from jsonrpclib.SimpleJSONRPCServer import SimpleJSONRPCServer
+    class SimpleThreadedJSONRPCServer(ThreadingMixIn, SimpleJSONRPCServer): pass
+    server = SimpleThreadedJSONRPCServer(( config.get('server','host'), 8081))
+    server.register_function(lambda : peer_list.values(), 'peers')
+    server.register_function(cmd_stop, 'stop')
+    server.register_function(cmd_load, 'load')
+    server.register_function(lambda : block_number, 'blocks')
+    server.register_function(clear_cache, 'clear_cache')
+    server.register_function(get_cache, 'get_cache')
+    server.register_function(send_tx, 'blockchain.transaction.broadcast')
+    server.register_function(store.get_history, 'blockchain.address.get_history')
+    server.register_function(new_session, 'session.new')
+    server.register_function(update_session, 'session.update')
+    server.register_function(poll_session, 'session.poll')
+    server.serve_forever()
+
+
 import traceback
 
 
 if __name__ == '__main__':
 
     if len(sys.argv)>1:
+        import jsonrpclib
+        server = jsonrpclib.Server('http://%s:8081'%config.get('server','host'))
         cmd = sys.argv[1]
         if cmd == 'load':
-            request = "('load','%s')#"%config.get('server','password')
+            out = server.load(password)
         elif cmd == 'peers':
-            request = "('peers','')#"
+            out = server.peers()
         elif cmd == 'stop':
-            request = "('stop','%s')#"%config.get('server','password')
+            out = server.stop(password)
+        elif cmd == 'clear_cache':
+            out = server.clear_cache(password)
+        elif cmd == 'get_cache':
+            out = server.get_cache(password,sys.argv[2])
         elif cmd == 'h':
-            request = "('h','%s')#"%sys.argv[2]
+            out = server.blockchain.address.get_history(sys.argv[2])
+        elif cmd == 'tx':
+            out = server.blockchain.transaction.broadcast(sys.argv[2])
         elif cmd == 'b':
-            request = "('b','')#"
-
-        s = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
-        s.connect((config.get('server','host'), config.getint('server','port')))
-        s.send( request )
-        out = ''
-        while 1:
-            msg = s.recv(1024)
-            if msg: out += msg
-            else: break
-        s.close()
+            out = server.blocks()
+        else:
+            out = "Unknown command: '%s'" % cmd
         print out
         sys.exit(0)
 
@@ -569,9 +748,10 @@ if __name__ == '__main__':
        args.connect_args = { 'database' : config.get('database','database') }
     store = MyStore(args)
     store.tx_cache = {}
-    store.ismempool = False
+    store.mempool_keys = {}
 
     thread.start_new_thread(listen_thread, (store,))
+    thread.start_new_thread(jsonrpc_thread, (store,))
     thread.start_new_thread(clean_session_thread, ())
     if (config.get('server','irc') == 'yes' ):
        thread.start_new_thread(irc_thread, ())
@@ -580,13 +760,16 @@ if __name__ == '__main__':
         try:
             dblock.acquire()
             store.catch_up()
-            store.ismempool = True
             memorypool_update(store)
-            store.ismempool = False
             block_number = store.get_block_number(1)
-            dblock.release()
+        except IOError:
+            print "IOError: cannot reach bitcoind"
+            block_number = 0
         except:
             traceback.print_exc(file=sys.stdout)
+            block_number = 0
+        finally:
+            dblock.release()
         time.sleep(10)
 
     print "server stopped"