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
21 import threading, traceback, sys, time, json, Queue
23 from version import ELECTRUM_VERSION
24 from util import print_error
29 'electrum.novit.ro:50001:t',
30 'electrum.pdmc.net:50001:t',
32 'electrum.bitcoins.sk:50001:t',
33 'uncle-enzo.info:50001:t',
34 'electrum.bytesized-hosting.com:50001:t',
35 'california.stratum.bitcoin.cz:50001:t',
36 'electrum.bitfoo.org:50001:t'
39 proxy_modes = ['socks4', 'socks5', 'http']
42 def pick_random_server():
43 return random.choice( DEFAULT_SERVERS )
45 def pick_random_interface():
46 servers = DEFAULT_SERVERS
48 server = random.choice( servers )
49 servers.remove(server)
50 i = Interface({'server':server})
53 raise BaseException('no server available')
57 class InterfaceAncestor(threading.Thread):
59 def __init__(self, host, port, proxy=None, use_ssl=True):
60 threading.Thread.__init__(self)
65 self.use_ssl = use_ssl
67 self.servers = [] # actual list from IRC
69 self.bytes_received = 0
71 self.is_connected = True
72 self.poll_interval = 1
76 self.responses = Queue.Queue()
77 self.unanswered_requests = {}
81 # push a fake response so that the getting thread exits its loop
82 self.responses.put(None)
84 def queue_json_response(self, c):
90 error = c.get('error')
93 print "received error:", c
96 if msg_id is not None:
97 method, params = self.unanswered_requests.pop(msg_id)
98 result = c.get('result')
101 method = c.get('method')
102 params = c.get('params')
104 if method == 'blockchain.numblocks.subscribe':
108 elif method == 'blockchain.address.subscribe':
113 self.responses.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
117 def subscribe(self, addresses):
119 for addr in addresses:
120 messages.append(('blockchain.address.subscribe', [addr]))
127 class HttpStratumInterface(InterfaceAncestor):
128 """ non-persistent connection. synchronous calls"""
130 def __init__(self, host, port, proxy=None, use_ssl=True):
131 InterfaceAncestor.__init__(self, host, port, proxy, use_ssl)
132 self.session_id = None
133 self.connection_msg = ('https' if self.use_ssl else 'http') + '://%s:%d'%( self.host, self.port )
135 def get_history(self, address):
136 self.send([('blockchain.address.get_history', [address] )])
139 self.is_connected = True
140 while self.is_connected:
144 time.sleep(self.poll_interval)
145 except socket.gaierror:
150 traceback.print_exc(file=sys.stdout)
153 self.is_connected = False
160 def send(self, messages):
161 import urllib2, json, time, cookielib
165 socks.setdefaultproxy(proxy_modes.index(self.proxy["mode"]), self.proxy["host"], int(self.proxy["port"]) )
166 socks.wrapmodule(urllib2)
168 cj = cookielib.CookieJar()
169 opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
170 urllib2.install_opener(opener)
177 if type(params) != type([]): params = [params]
178 data.append( { 'method':method, 'id':self.message_id, 'params':params } )
179 self.unanswered_requests[self.message_id] = method, params
183 data_json = json.dumps(data)
189 headers = {'content-type': 'application/json'}
191 headers['cookie'] = 'SESSION=%s'%self.session_id
193 req = urllib2.Request(self.connection_msg, data_json, headers)
194 response_stream = urllib2.urlopen(req)
196 for index, cookie in enumerate(cj):
197 if cookie.name=='SESSION':
198 self.session_id = cookie.value
200 response = response_stream.read()
201 self.bytes_received += len(response)
203 response = json.loads( response )
204 if type(response) is not type([]):
205 self.queue_json_response(response)
207 for item in response:
208 self.queue_json_response(item)
211 self.poll_interval = 1
213 if self.poll_interval < 15:
214 self.poll_interval += 1
215 #print self.poll_interval, response
217 self.rtime = time.time() - t1
218 self.is_connected = True
223 class TcpStratumInterface(InterfaceAncestor):
224 """json-rpc over persistent TCP connection, asynchronous"""
226 def __init__(self, host, port, proxy=None, use_ssl=True):
227 InterfaceAncestor.__init__(self, host, port, proxy, use_ssl)
230 def init_socket(self):
233 self.connection_msg = "%s:%d"%(self.host,self.port)
234 if self.proxy is None:
235 s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
237 self.connection_msg += " using proxy %s:%s:%s"%(self.proxy.get('mode'), self.proxy.get('host'), self.proxy.get('port'))
239 s = socks.socksocket()
240 s.setproxy(proxy_modes.index(self.proxy["mode"]), self.proxy["host"], int(self.proxy["port"]) )
243 s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv23)
246 s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
249 s.connect(( self.host.encode('ascii'), int(self.port)))
252 self.is_connected = True
253 self.send([('server.version', [ELECTRUM_VERSION])])
255 self.is_connected = False
261 while self.is_connected:
262 try: msg = self.s.recv(1024)
263 except socket.timeout:
264 # ping the server with server.version, as a real ping does not exist yet
265 self.send([('server.version', [ELECTRUM_VERSION])])
268 self.bytes_received += len(msg)
270 self.is_connected = False
271 print "Disconnected."
279 self.queue_json_response(c)
282 traceback.print_exc(file=sys.stdout)
284 self.is_connected = False
288 def send(self, messages):
289 """return the ids of the requests that we sent"""
294 request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
295 self.unanswered_requests[self.message_id] = method, params
296 ids.append(self.message_id)
298 # print "-->",request
300 out += request + '\n'
302 sent = self.s.send( out )
306 def get_history(self, addr):
307 self.send([('blockchain.address.get_history', [addr])])
311 class Interface(TcpStratumInterface, HttpStratumInterface):
313 def __init__(self, config = None):
316 from simple_config import SimpleConfig
317 config = SimpleConfig()
319 s = config.get('server')
320 host, port, protocol = s.split(':')
323 self.protocol = protocol
324 proxy = self.parse_proxy_options(config.get('proxy'))
325 self.server = host + ':%d:%s'%(port, protocol)
327 #print protocol, host, port
329 TcpStratumInterface.__init__(self, host, port, proxy, use_ssl=(protocol=='s'))
330 elif protocol in 'gh':
331 HttpStratumInterface.__init__(self, host, port, proxy, use_ssl=(protocol=='g'))
333 raise BaseException('Unknown protocol: %s'%protocol)
337 if self.protocol in 'st':
338 TcpStratumInterface.run(self)
340 HttpStratumInterface.run(self)
342 def send(self, messages):
343 if self.protocol in 'st':
344 return TcpStratumInterface.send(self, messages)
346 return HttpStratumInterface.send(self, messages)
349 def parse_proxy_options(self, s):
350 if type(s) == type({}): return s # fixme: type should be fixed
351 if type(s) != type(""): return None
352 if s.lower() == 'none': return None
353 proxy = { "mode":"socks5", "host":"localhost" }
356 if proxy_modes.count(args[n]) == 1:
357 proxy["mode"] = args[n]
360 proxy["host"] = args[n]
363 proxy["port"] = args[n]
365 proxy["port"] = "8080" if proxy["mode"] == "http" else "1080"
369 def set_server(self, server, proxy=None):
370 # raise an error if the format isnt correct
371 a,b,c = server.split(':')
375 if server != self.server or proxy != self.proxy:
376 print "changing server:", server, proxy
379 self.is_connected = False # this exits the polling loop
383 def is_up_to_date(self):
384 return self.responses.empty() and not self.unanswered_requests
387 def synchronous_get(self, requests, timeout=100000000):
388 # todo: use generators, unanswered_requests should be a list of arrays...
389 ids = self.send(requests)
393 r = self.responses.get(True, timeout)
397 res[_id] = r.get('result')
406 class WalletSynchronizer(threading.Thread):
408 def __init__(self, wallet, config, loop=False, servers_loaded_callback=None):
409 threading.Thread.__init__(self)
414 self.init_interface()
415 self.servers_loaded_callback = servers_loaded_callback
417 def init_interface(self):
418 if self.config.get('server'):
419 self.interface = Interface(self.config)
421 print "Using random server..."
422 self.interface = pick_random_interface()
424 if self.interface.is_connected:
425 print "Connected to " + self.interface.connection_msg
427 print_error("Failed to connect " + self.interface.connection_msg)
429 self.wallet.interface = self.interface
431 def handle_response(self, r):
439 if method == 'server.banner':
440 self.wallet.banner = result
441 self.wallet.was_updated = True
443 elif method == 'server.peers.subscribe':
452 if re.match("[stgh]\d+", v):
453 ports.append((v[0], v[1:]))
454 if re.match("v(.?)+", v):
456 if ports and version:
457 servers.append((host, ports))
458 self.interface.servers = servers
459 # servers_loaded_callback is None for commands, but should
460 # NEVER be None when using the GUI.
461 if self.servers_loaded_callback is not None:
462 self.servers_loaded_callback()
464 elif method == 'blockchain.address.subscribe':
466 self.wallet.receive_status_callback(addr, result)
468 elif method == 'blockchain.address.get_history':
470 self.wallet.receive_history_callback(addr, result)
471 self.wallet.was_updated = True
473 elif method == 'blockchain.transaction.broadcast':
474 self.wallet.tx_result = result
475 self.wallet.tx_event.set()
477 elif method == 'blockchain.numblocks.subscribe':
478 self.wallet.blocks = result
479 self.wallet.was_updated = True
481 elif method == 'server.version':
485 print_error("Error: Unknown message:" + method + ", " + params + ", " + result)
488 def start_interface(self):
489 self.interface.start()
490 if self.interface.is_connected:
491 self.wallet.start_session(self.interface)
497 self.start_interface()
499 while self.interface.is_connected:
500 new_addresses = self.wallet.synchronize()
502 self.interface.subscribe(new_addresses)
504 if self.interface.is_up_to_date():
505 if not self.wallet.up_to_date:
506 self.wallet.up_to_date = True
507 self.wallet.was_updated = True
508 self.wallet.up_to_date_event.set()
510 if self.wallet.up_to_date:
511 self.wallet.up_to_date = False
512 self.wallet.was_updated = True
514 if self.wallet.was_updated:
515 self.wallet.trigger_callbacks()
516 self.wallet.was_updated = False
518 response = self.interface.responses.get()
519 self.handle_response(response)
521 self.wallet.trigger_callbacks()
524 # Server has been changed. Copy callback for new interface.
525 self.proxy = self.interface.proxy
526 self.init_interface()
527 self.start_interface()