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 'electrum.thecoinwillprevail.com': {'h': '8081', 's': '50002', 't': '50001'},
32 'the9ull.homelinux.org': {'h': '8082', 't': '50001'},
33 'electra.datemas.de': {'h': '8081', 's': '50002', 't': '50001', 'g': '808'},
34 'electrum.datemas.de': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
35 'ecdsa.org': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
36 'electrum.mooo.com': {'h': '8081', 't': '50001'},
37 'btcback.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
38 'electrum.bitcoins.sk': {'h': '8081', 's': '50002', 't': '50001', 'g': '8'},
39 'electrum.no-ip.org': {'h': '80', 's': '50002', 't': '50001', 'g': '443'},
40 'electrum.drollette.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
41 'btc.it-zone.org': {'h': '80', 's': '110', 't': '50001', 'g': '443'},
42 'electrum.yacoin.com': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'},
43 'electrum.be': {'h': '8081', 's': '50002', 't': '50001', 'g': '8082'}
48 def filter_protocol(servers, p):
50 for k, protocols in servers.items():
52 l.append( ':'.join([k, protocols[p], p]) )
57 proxy_modes = ['socks4', 'socks5', 'http']
60 def pick_random_server():
61 return random.choice( filter_protocol(DEFAULT_SERVERS,'s') )
66 class Interface(threading.Thread):
68 def register_callback(self, event, callback):
70 if not self.callbacks.get(event):
71 self.callbacks[event] = []
72 self.callbacks[event].append(callback)
74 def trigger_callback(self, event):
76 callbacks = self.callbacks.get(event,[])[:]
78 [callback() for callback in callbacks]
80 def init_server(self, host, port, proxy=None, use_ssl=True):
84 self.use_ssl = use_ssl
85 self.poll_interval = 1
89 self.unanswered_requests = {}
94 def queue_json_response(self, c):
97 # print_error( "<--",c )
100 error = c.get('error')
103 print_error("received error:", c)
104 if msg_id is not None:
106 method, params, channel = self.unanswered_requests.pop(msg_id)
107 response_queue = self.responses[channel]
108 response_queue.put({'method':method, 'params':params, 'error':error, 'id':msg_id})
112 if msg_id is not None:
114 method, params, channel = self.unanswered_requests.pop(msg_id)
115 result = c.get('result')
117 if method == 'server.version':
118 self.server_version = result
120 elif method == 'server.banner':
122 self.trigger_callback('banner')
124 elif method == 'server.peers.subscribe':
135 if re.match("[stgh]\d*", v):
136 protocol, port = v[0], v[1:]
137 if port == '': port = DEFAULT_PORTS[protocol]
139 elif re.match("v(.?)+", v):
141 elif re.match("p\d*", v):
142 pruning_level = v[1:]
143 if pruning_level == '': pruning_level = '0'
145 is_recent = float(version)>=float(PROTOCOL_VERSION)
149 if out and is_recent:
150 out['pruning'] = pruning_level
153 self.servers = servers
154 self.trigger_callback('peers')
157 # notification: find the channel(s)
158 method = c.get('method')
159 params = c.get('params')
161 if method == 'blockchain.numblocks.subscribe':
165 elif method == 'blockchain.headers.subscribe':
169 elif method == 'blockchain.address.subscribe':
175 for k,v in self.subscriptions.items():
176 if (method, params) in v:
180 print_error( "received unexpected notification", method, params)
181 print_error( self.subscriptions )
184 response_queue = self.responses[channel]
185 response_queue.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
189 def get_response(self, channel='default', block=True, timeout=10000000000):
190 return self.responses[channel].get(block, timeout)
192 def register_channel(self, channel):
194 self.responses[channel] = Queue.Queue()
196 def poke(self, channel):
197 self.responses[channel].put(None)
200 def init_http(self, host, port, proxy=None, use_ssl=True):
201 self.init_server(host, port, proxy, use_ssl)
202 self.session_id = None
203 self.is_connected = True
204 self.connection_msg = ('https' if self.use_ssl else 'http') + '://%s:%d'%( self.host, self.port )
208 print_error("http init session failed")
209 self.is_connected = False
213 print_error('http session:',self.session_id)
214 self.is_connected = True
216 self.is_connected = False
219 self.is_connected = True
220 while self.is_connected:
224 time.sleep(self.poll_interval)
225 except socket.gaierror:
230 traceback.print_exc(file=sys.stdout)
233 self.is_connected = False
240 def send_http(self, messages, channel='default'):
241 import urllib2, json, time, cookielib
242 print_error( "send_http", messages )
246 socks.setdefaultproxy(proxy_modes.index(self.proxy["mode"]) + 1, self.proxy["host"], int(self.proxy["port"]) )
247 socks.wrapmodule(urllib2)
249 cj = cookielib.CookieJar()
250 opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
251 urllib2.install_opener(opener)
258 if type(params) != type([]): params = [params]
259 data.append( { 'method':method, 'id':self.message_id, 'params':params } )
260 self.unanswered_requests[self.message_id] = method, params, channel
264 data_json = json.dumps(data)
270 headers = {'content-type': 'application/json'}
272 headers['cookie'] = 'SESSION=%s'%self.session_id
275 req = urllib2.Request(self.connection_msg, data_json, headers)
276 response_stream = urllib2.urlopen(req, timeout=DEFAULT_TIMEOUT)
280 for index, cookie in enumerate(cj):
281 if cookie.name=='SESSION':
282 self.session_id = cookie.value
284 response = response_stream.read()
285 self.bytes_received += len(response)
287 response = json.loads( response )
288 if type(response) is not type([]):
289 self.queue_json_response(response)
291 for item in response:
292 self.queue_json_response(item)
295 self.poll_interval = 1
297 if self.poll_interval < 15:
298 self.poll_interval += 1
299 #print self.poll_interval, response
301 self.rtime = time.time() - t1
302 self.is_connected = True
307 def init_tcp(self, host, port, proxy=None, use_ssl=True):
308 self.init_server(host, port, proxy, use_ssl)
311 self.connection_msg = "%s:%d"%(self.host,self.port)
312 if self.proxy is None:
313 s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
315 self.connection_msg += " using proxy %s:%s:%s"%(self.proxy.get('mode'), self.proxy.get('host'), self.proxy.get('port'))
317 s = socks.socksocket()
318 s.setproxy(proxy_modes.index(self.proxy["mode"]) + 1, self.proxy["host"], int(self.proxy["port"]) )
321 s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv23, do_handshake_on_connect=True)
324 s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
327 s.connect(( self.host.encode('ascii'), int(self.port)))
329 traceback.print_exc(file=sys.stdout)
330 self.is_connected = False
336 self.is_connected = True
340 #if self.use_ssl: self.s.do_handshake()
342 while self.is_connected:
345 msg = self.s.recv(1024)
346 except socket.timeout:
350 except socket.error, err:
351 if err.errno in [11, 10035]:
352 print_error("socket errno", err.errno)
356 traceback.print_exc(file=sys.stdout)
360 # ping the server with server.version, as a real ping does not exist yet
361 self.send([('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION])])
365 self.bytes_received += len(msg)
367 self.is_connected = False
375 self.queue_json_response(c)
378 traceback.print_exc(file=sys.stdout)
380 self.is_connected = False
383 def send_tcp(self, messages, channel='default'):
384 """return the ids of the requests that we sent"""
389 request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
390 self.unanswered_requests[self.message_id] = method, params, channel
391 ids.append(self.message_id)
393 # print "-->",request
395 out += request + '\n'
398 sent = self.s.send( out )
401 # this happens when we get disconnected
402 print_error( "Not connected, cannot send" )
408 def __init__(self, config=None, loop=False):
409 self.server = random.choice(filter_protocol(DEFAULT_SERVERS, 's'))
413 from simple_config import SimpleConfig
414 config = SimpleConfig()
416 threading.Thread.__init__(self)
420 self.connect_event = threading.Event()
422 self.subscriptions = {}
424 self.responses['default'] = Queue.Queue()
427 self.lock = threading.Lock()
429 self.servers = {} # actual list from IRC
431 self.bytes_received = 0
432 self.is_connected = False
436 def init_interface(self):
437 if self.config.get('server'):
438 self.init_with_server(self.config)
440 if self.config.get('auto_cycle') is None:
441 self.config.set_key('auto_cycle', True, False)
443 if not self.is_connected and self.config.get('auto_cycle'):
444 print_msg("Using random server...")
445 servers = filter_protocol(DEFAULT_SERVERS, 's')
447 server = random.choice( servers )
448 servers.remove(server)
450 self.config.set_key('server', server, False)
451 self.init_with_server(self.config)
452 if self.is_connected: break
454 if not self.is_connected:
455 print 'no server available'
456 self.connect_event.set() # to finish start
457 self.server = 'ecdsa.org:50001:t'
461 self.connect_event.set()
462 if self.is_connected:
463 self.send([('server.version', [ELECTRUM_VERSION, PROTOCOL_VERSION])])
464 self.send([('server.banner',[])])
465 self.trigger_callback('connected')
467 self.trigger_callback('notconnected')
468 #print_error("Failed to connect " + self.connection_msg)
471 def init_with_server(self, config):
473 s = config.get('server')
474 host, port, protocol = s.split(':')
477 self.protocol = protocol
478 proxy = self.parse_proxy_options(config.get('proxy'))
479 self.server = host + ':%d:%s'%(port, protocol)
481 #print protocol, host, port
483 self.init_tcp(host, port, proxy, use_ssl=(protocol=='s'))
484 elif protocol in 'gh':
485 self.init_http(host, port, proxy, use_ssl=(protocol=='g'))
487 raise BaseException('Unknown protocol: %s'%protocol)
490 def send(self, messages, channel='default'):
493 for message in messages:
495 if m[-10:] == '.subscribe':
500 if self.subscriptions.get(channel) is None:
501 self.subscriptions[channel] = []
503 if message not in self.subscriptions[channel]:
504 self.subscriptions[channel].append(message)
506 if not self.is_connected:
509 if self.protocol in 'st':
511 out = self.send_tcp(messages, channel)
513 # do not use lock, http is synchronous
514 out = self.send_http(messages, channel)
518 def resend_subscriptions(self):
519 for channel, messages in self.subscriptions.items():
521 self.send(messages, channel)
525 def parse_proxy_options(self, s):
526 if type(s) == type({}): return s # fixme: type should be fixed
527 if type(s) != type(""): return None
528 if s.lower() == 'none': return None
529 proxy = { "mode":"socks5", "host":"localhost" }
532 if proxy_modes.count(args[n]) == 1:
533 proxy["mode"] = args[n]
536 proxy["host"] = args[n]
539 proxy["port"] = args[n]
541 proxy["port"] = "8080" if proxy["mode"] == "http" else "1080"
545 def set_server(self, server, proxy=None):
546 # raise an error if the format isnt correct
547 a,b,c = server.split(':')
551 if server != self.server or proxy != self.proxy:
552 print "changing server:", server, proxy
555 if self.is_connected and self.protocol in 'st' and self.s:
556 self.s.shutdown(socket.SHUT_RDWR)
558 self.is_connected = False # this exits the polling loop
559 self.trigger_callback('disconnecting') # for actively disconnecting
562 if self.is_connected and self.protocol in 'st' and self.s:
563 self.s.shutdown(socket.SHUT_RDWR)
567 def get_servers(self):
569 return DEFAULT_SERVERS
574 def is_empty(self, channel):
575 q = self.responses.get(channel)
582 def get_pending_requests(self, channel):
585 for k, v in self.unanswered_requests.items():
587 if c == channel: result.append(k)
590 def is_up_to_date(self, channel):
591 return self.is_empty(channel) and not self.get_pending_requests(channel)
594 def synchronous_get(self, requests, timeout=100000000):
595 # todo: use generators, unanswered_requests should be a list of arrays...
596 ids = self.send(requests)
600 r = self.responses['default'].get(True, timeout)
604 res[_id] = r.get('result')
611 def start(self, wait=True):
612 threading.Thread.start(self)
614 # wait until connection is established
615 self.connect_event.wait()
616 if not self.is_connected:
622 self.init_interface()
623 if self.is_connected:
624 self.resend_subscriptions()
625 self.run_tcp() if self.protocol in 'st' else self.run_http()
627 self.trigger_callback('disconnected')
629 if not self.loop: break