3 # Electrum - lightweight Bitcoin client
4 # Copyright (C) 2011 thomasv@gitorious
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 import random, socket, ast, re, ssl
21 import threading, traceback, sys, time, json, Queue
23 from version import ELECTRUM_VERSION, PROTOCOL_VERSION
24 from util import print_error, print_msg
28 DEFAULT_PORTS = {'t':'50001', 's':'50002', 'h':'8081', 'g':'8082'}
31 'the9ull.homelinux.org': {'h': '8082', 't': '50001'},
32 'electrum.coinwallet.me': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
33 'electrum.dynaloop.net': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
34 'electrum.koh.ms': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
35 'electrum.novit.ro': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
36 'electrum.stepkrav.pw': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
37 'ecdsa.org': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
38 'electrum.mooo.com': {'h': '8081', 't': '50001'},
39 'electrum.bitcoins.sk': {'h': '8081', 's': '50002', 't': '50001', 'g': '8'},
40 'electrum.no-ip.org': {'h': '80', 's': '50002', 't': '50001', 'g': '443'},
41 'electrum.drollette.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
42 'btc.it-zone.org': {'h': '80', 's': '110', 't': '50001', 'g': '443'},
43 'electrum.yacoin.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
44 'electrum.be': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'}
49 def filter_protocol(servers, p):
51 for k, protocols in servers.items():
53 l.append( ':'.join([k, protocols[p], p]) )
58 proxy_modes = ['socks4', 'socks5', 'http']
61 def pick_random_server():
62 return random.choice( filter_protocol(DEFAULT_SERVERS,'s') )
67 class Interface(threading.Thread):
69 def register_callback(self, event, callback):
71 if not self.callbacks.get(event):
72 self.callbacks[event] = []
73 self.callbacks[event].append(callback)
75 def trigger_callback(self, event):
77 callbacks = self.callbacks.get(event,[])[:]
79 [callback() for callback in callbacks]
81 def init_server(self, host, port, proxy=None, use_ssl=True):
85 self.use_ssl = use_ssl
86 self.poll_interval = 1
90 self.unanswered_requests = {}
95 def queue_json_response(self, c):
98 # print_error( "<--",c )
101 error = c.get('error')
104 print_error("received error:", c)
105 if msg_id is not None:
107 method, params, channel = self.unanswered_requests.pop(msg_id)
108 response_queue = self.responses[channel]
109 response_queue.put({'method':method, 'params':params, 'error':error, 'id':msg_id})
113 if msg_id is not None:
115 method, params, channel = self.unanswered_requests.pop(msg_id)
116 result = c.get('result')
118 if method == 'server.version':
119 self.server_version = result
121 elif method == 'server.banner':
123 self.trigger_callback('banner')
125 elif method == 'server.peers.subscribe':
136 if re.match("[stgh]\d*", v):
137 protocol, port = v[0], v[1:]
138 if port == '': port = DEFAULT_PORTS[protocol]
140 elif re.match("v(.?)+", v):
142 elif re.match("p\d*", v):
143 pruning_level = v[1:]
144 if pruning_level == '': pruning_level = '0'
146 is_recent = float(version)>=float(PROTOCOL_VERSION)
150 if out and is_recent:
151 out['pruning'] = pruning_level
154 self.servers = servers
155 self.trigger_callback('peers')
158 # notification: find the channel(s)
159 method = c.get('method')
160 params = c.get('params')
162 if method == 'blockchain.numblocks.subscribe':
166 elif method == 'blockchain.headers.subscribe':
170 elif method == 'blockchain.address.subscribe':
176 for k,v in self.subscriptions.items():
177 if (method, params) in v:
181 print_error( "received unexpected notification", method, params)
182 print_error( self.subscriptions )
185 response_queue = self.responses[channel]
186 response_queue.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
190 def get_response(self, channel='default', block=True, timeout=10000000000):
191 return self.responses[channel].get(block, timeout)
193 def register_channel(self, channel):
195 self.responses[channel] = Queue.Queue()
197 def poke(self, channel):
198 self.responses[channel].put(None)
201 def init_http(self, host, port, proxy=None, use_ssl=True):
202 self.init_server(host, port, proxy, use_ssl)
203 self.session_id = None
204 self.is_connected = True
205 self.connection_msg = ('https' if self.use_ssl else 'http') + '://%s:%d'%( self.host, self.port )
209 print_error("http init session failed")
210 self.is_connected = False
214 print_error('http session:',self.session_id)
215 self.is_connected = True
217 self.is_connected = False
220 self.is_connected = True
221 while self.is_connected:
225 time.sleep(self.poll_interval)
226 except socket.gaierror:
231 traceback.print_exc(file=sys.stdout)
234 self.is_connected = False
241 def send_http(self, messages, channel='default'):
242 import urllib2, json, time, cookielib
243 print_error( "send_http", messages )
247 socks.setdefaultproxy(proxy_modes.index(self.proxy["mode"]) + 1, self.proxy["host"], int(self.proxy["port"]) )
248 socks.wrapmodule(urllib2)
250 cj = cookielib.CookieJar()
251 opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
252 urllib2.install_opener(opener)
259 if type(params) != type([]): params = [params]
260 data.append( { 'method':method, 'id':self.message_id, 'params':params } )
261 self.unanswered_requests[self.message_id] = method, params, channel
265 data_json = json.dumps(data)
271 headers = {'content-type': 'application/json'}
273 headers['cookie'] = 'SESSION=%s'%self.session_id
276 req = urllib2.Request(self.connection_msg, data_json, headers)
277 response_stream = urllib2.urlopen(req, timeout=DEFAULT_TIMEOUT)
281 for index, cookie in enumerate(cj):
282 if cookie.name=='SESSION':
283 self.session_id = cookie.value
285 response = response_stream.read()
286 self.bytes_received += len(response)
288 response = json.loads( response )
289 if type(response) is not type([]):
290 self.queue_json_response(response)
292 for item in response:
293 self.queue_json_response(item)
296 self.poll_interval = 1
298 if self.poll_interval < 15:
299 self.poll_interval += 1
300 #print self.poll_interval, response
302 self.rtime = time.time() - t1
303 self.is_connected = True
308 def init_tcp(self, host, port, proxy=None, use_ssl=True):
309 self.init_server(host, port, proxy, use_ssl)
312 self.connection_msg = "%s:%d"%(self.host,self.port)
313 if self.proxy is None:
314 s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
316 self.connection_msg += " using proxy %s:%s:%s"%(self.proxy.get('mode'), self.proxy.get('host'), self.proxy.get('port'))
318 s = socks.socksocket()
319 s.setproxy(proxy_modes.index(self.proxy["mode"]) + 1, self.proxy["host"], int(self.proxy["port"]) )
322 s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv23, do_handshake_on_connect=True)
325 s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
328 s.connect(( self.host.encode('ascii'), int(self.port)))
330 traceback.print_exc(file=sys.stdout)
331 self.is_connected = False
337 self.is_connected = True
341 #if self.use_ssl: self.s.do_handshake()
343 while self.is_connected:
346 msg = self.s.recv(1024)
347 except socket.timeout:
351 except socket.error, err:
352 if err.errno in [11, 10035]:
353 print_error("socket errno", err.errno)
357 traceback.print_exc(file=sys.stdout)
361 # ping the server with server.version, as a real ping does not exist yet
362 self.send([('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION])])
366 self.bytes_received += len(msg)
368 self.is_connected = False
376 self.queue_json_response(c)
379 traceback.print_exc(file=sys.stdout)
381 self.is_connected = False
384 def send_tcp(self, messages, channel='default'):
385 """return the ids of the requests that we sent"""
390 request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
391 self.unanswered_requests[self.message_id] = method, params, channel
392 ids.append(self.message_id)
394 # print "-->",request
396 out += request + '\n'
399 sent = self.s.send( out )
402 # this happens when we get disconnected
403 print_error( "Not connected, cannot send" )
409 def __init__(self, config=None, loop=False):
410 self.server = random.choice(filter_protocol(DEFAULT_SERVERS, 's'))
414 from simple_config import SimpleConfig
415 config = SimpleConfig()
417 threading.Thread.__init__(self)
421 self.connect_event = threading.Event()
423 self.subscriptions = {}
425 self.responses['default'] = Queue.Queue()
428 self.lock = threading.Lock()
430 self.servers = {} # actual list from IRC
432 self.bytes_received = 0
433 self.is_connected = False
437 def init_interface(self):
438 if self.config.get('server'):
439 self.init_with_server(self.config)
441 if self.config.get('auto_cycle') is None:
442 self.config.set_key('auto_cycle', True, False)
444 if not self.is_connected and self.config.get('auto_cycle'):
445 print_msg("Using random server...")
446 servers = filter_protocol(DEFAULT_SERVERS, 's')
448 server = random.choice( servers )
449 servers.remove(server)
451 self.config.set_key('server', server, False)
452 self.init_with_server(self.config)
453 if self.is_connected: break
455 if not self.is_connected:
456 print 'no server available'
457 self.connect_event.set() # to finish start
458 self.server = 'ecdsa.org:50001:t'
462 self.connect_event.set()
463 if self.is_connected:
464 self.send([('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION])])
465 self.send([('server.banner',[])])
466 self.trigger_callback('connected')
468 self.trigger_callback('notconnected')
469 #print_error("Failed to connect " + self.connection_msg)
472 def init_with_server(self, config):
474 s = config.get('server')
475 host, port, protocol = s.split(':')
478 self.protocol = protocol
479 proxy = self.parse_proxy_options(config.get('proxy'))
480 self.server = host + ':%d:%s'%(port, protocol)
482 #print protocol, host, port
484 self.init_tcp(host, port, proxy, use_ssl=(protocol=='s'))
485 elif protocol in 'gh':
486 self.init_http(host, port, proxy, use_ssl=(protocol=='g'))
488 raise BaseException('Unknown protocol: %s'%protocol)
491 def send(self, messages, channel='default'):
494 for message in messages:
496 if m[-10:] == '.subscribe':
501 if self.subscriptions.get(channel) is None:
502 self.subscriptions[channel] = []
504 if message not in self.subscriptions[channel]:
505 self.subscriptions[channel].append(message)
507 if not self.is_connected:
510 if self.protocol in 'st':
512 out = self.send_tcp(messages, channel)
514 # do not use lock, http is synchronous
515 out = self.send_http(messages, channel)
519 def resend_subscriptions(self):
520 for channel, messages in self.subscriptions.items():
522 self.send(messages, channel)
526 def parse_proxy_options(self, s):
527 if type(s) == type({}): return s # fixme: type should be fixed
528 if type(s) != type(""): return None
529 if s.lower() == 'none': return None
530 proxy = { "mode":"socks5", "host":"localhost" }
533 if proxy_modes.count(args[n]) == 1:
534 proxy["mode"] = args[n]
537 proxy["host"] = args[n]
540 proxy["port"] = args[n]
542 proxy["port"] = "8080" if proxy["mode"] == "http" else "1080"
546 def set_server(self, server, proxy=None):
547 # raise an error if the format isnt correct
548 a,b,c = server.split(':')
552 if server != self.server or proxy != self.proxy:
553 print "changing server:", server, proxy
556 if self.is_connected and self.protocol in 'st' and self.s:
557 self.s.shutdown(socket.SHUT_RDWR)
559 self.is_connected = False # this exits the polling loop
560 self.trigger_callback('disconnecting') # for actively disconnecting
563 if self.is_connected and self.protocol in 'st' and self.s:
564 self.s.shutdown(socket.SHUT_RDWR)
568 def get_servers(self):
570 return DEFAULT_SERVERS
575 def is_empty(self, channel):
576 q = self.responses.get(channel)
583 def get_pending_requests(self, channel):
586 for k, v in self.unanswered_requests.items():
588 if c == channel: result.append(k)
591 def is_up_to_date(self, channel):
592 return self.is_empty(channel) and not self.get_pending_requests(channel)
595 def synchronous_get(self, requests, timeout=100000000):
596 # todo: use generators, unanswered_requests should be a list of arrays...
597 ids = self.send(requests)
601 r = self.responses['default'].get(True, timeout)
605 res[_id] = r.get('result')
612 def start(self, wait=True):
613 threading.Thread.start(self)
615 # wait until connection is established
616 self.connect_event.wait()
617 if not self.is_connected:
623 self.init_interface()
624 if self.is_connected:
625 self.resend_subscriptions()
626 self.run_tcp() if self.protocol in 'st' else self.run_http()
628 self.trigger_callback('disconnected')
630 if not self.loop: break