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 'electrum.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 )
48 class Interface(threading.Thread):
50 def register_callback(self, event, callback):
52 self.callbacks[event] = callback
54 def trigger_callback(self, event):
56 callback = self.callbacks.get(event)
62 def init_server(self, host, port, proxy=None, use_ssl=True):
66 self.use_ssl = use_ssl
68 self.servers = [] # actual list from IRC
70 self.bytes_received = 0
72 self.is_connected = True
73 self.poll_interval = 1
77 self.unanswered_requests = {}
81 def queue_json_response(self, c):
87 error = c.get('error')
90 print "received error:", c
93 if msg_id is not None:
95 method, params, channel = self.unanswered_requests.pop(msg_id)
96 result = c.get('result')
98 # notification. we should find the channel(s)..
99 method = c.get('method')
100 params = c.get('params')
102 for k,v in self.subscriptions.items():
103 if (method, params) in v:
108 if method == 'blockchain.numblocks.subscribe':
112 elif method == 'blockchain.address.subscribe':
118 response_queue = self.responses[channel]
119 response_queue.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
123 def get_response(self, channel='default', block=True, timeout=10000000000):
124 return self.responses[channel].get(block, timeout)
126 def register_channel(self, channel):
128 self.responses[channel] = Queue.Queue()
130 def poke(self, channel):
131 self.responses[channel].put(None)
134 def init_http(self, host, port, proxy=None, use_ssl=True):
135 self.init_server(host, port, proxy, use_ssl)
136 self.session_id = None
137 self.connection_msg = ('https' if self.use_ssl else 'http') + '://%s:%d'%( self.host, self.port )
141 self.is_connected = True
142 while self.is_connected:
146 time.sleep(self.poll_interval)
147 except socket.gaierror:
152 traceback.print_exc(file=sys.stdout)
155 self.is_connected = False
162 def send_http(self, messages, channel='default'):
163 import urllib2, json, time, cookielib
167 socks.setdefaultproxy(proxy_modes.index(self.proxy["mode"]), self.proxy["host"], int(self.proxy["port"]) )
168 socks.wrapmodule(urllib2)
170 cj = cookielib.CookieJar()
171 opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
172 urllib2.install_opener(opener)
179 if type(params) != type([]): params = [params]
180 data.append( { 'method':method, 'id':self.message_id, 'params':params } )
181 self.unanswered_requests[self.message_id] = method, params, channel
185 data_json = json.dumps(data)
191 headers = {'content-type': 'application/json'}
193 headers['cookie'] = 'SESSION=%s'%self.session_id
195 req = urllib2.Request(self.connection_msg, data_json, headers)
196 response_stream = urllib2.urlopen(req)
198 for index, cookie in enumerate(cj):
199 if cookie.name=='SESSION':
200 self.session_id = cookie.value
202 response = response_stream.read()
203 self.bytes_received += len(response)
205 response = json.loads( response )
206 if type(response) is not type([]):
207 self.queue_json_response(response)
209 for item in response:
210 self.queue_json_response(item)
213 self.poll_interval = 1
215 if self.poll_interval < 15:
216 self.poll_interval += 1
217 #print self.poll_interval, response
219 self.rtime = time.time() - t1
220 self.is_connected = True
225 def init_tcp(self, host, port, proxy=None, use_ssl=True):
226 self.init_server(host, port, proxy, use_ssl)
230 self.connection_msg = "%s:%d"%(self.host,self.port)
231 if self.proxy is None:
232 s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
234 self.connection_msg += " using proxy %s:%s:%s"%(self.proxy.get('mode'), self.proxy.get('host'), self.proxy.get('port'))
236 s = socks.socksocket()
237 s.setproxy(proxy_modes.index(self.proxy["mode"]), self.proxy["host"], int(self.proxy["port"]) )
240 s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv23)
243 s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
246 s.connect(( self.host.encode('ascii'), int(self.port)))
249 self.is_connected = True
251 self.is_connected = False
258 while self.is_connected:
259 try: msg = self.s.recv(1024)
260 except socket.timeout:
262 # ping the server with server.version, as a real ping does not exist yet
263 self.send([('server.version', [ELECTRUM_VERSION])])
266 self.bytes_received += len(msg)
268 self.is_connected = False
269 print "Disconnected."
277 self.queue_json_response(c)
280 traceback.print_exc(file=sys.stdout)
282 self.is_connected = False
285 def send_tcp(self, messages, channel='default'):
286 """return the ids of the requests that we sent"""
291 request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
292 self.unanswered_requests[self.message_id] = method, params, channel
293 ids.append(self.message_id)
295 # print "-->",request
297 out += request + '\n'
299 sent = self.s.send( out )
305 def __init__(self, config=None, loop=False):
308 from simple_config import SimpleConfig
309 config = SimpleConfig()
311 threading.Thread.__init__(self)
316 self.subscriptions = {}
318 self.responses['default'] = Queue.Queue()
321 self.lock = threading.Lock()
322 self.init_interface()
326 def init_interface(self):
327 if self.config.get('server'):
328 self.init_with_server(self.config)
330 print "Using random server..."
331 servers = DEFAULT_SERVERS
333 server = random.choice( servers )
334 servers.remove(server)
335 self.config.set_key('server', server, False)
336 self.init_with_server(self.config)
337 if self.is_connected: break
340 raise BaseException('no server available')
342 if self.is_connected:
343 self.send([('server.version', [ELECTRUM_VERSION])])
344 self.trigger_callback('connected')
346 self.trigger_callback('notconnected')
347 #print_error("Failed to connect " + self.connection_msg)
350 def init_with_server(self, config):
352 s = config.get('server')
353 host, port, protocol = s.split(':')
356 self.protocol = protocol
357 proxy = self.parse_proxy_options(config.get('proxy'))
358 self.server = host + ':%d:%s'%(port, protocol)
360 #print protocol, host, port
362 self.init_tcp(host, port, proxy, use_ssl=(protocol=='s'))
363 elif protocol in 'gh':
364 self.init_http(host, port, proxy, use_ssl=(protocol=='g'))
366 raise BaseException('Unknown protocol: %s'%protocol)
369 def send(self, messages, channel='default'):
372 for message in messages:
374 if m[-10:] == '.subscribe':
379 if self.subscriptions.get(channel) is None:
380 self.subscriptions[channel] = []
381 self.subscriptions[channel] += sub
383 if self.protocol in 'st':
385 out = self.send_tcp(messages, channel)
387 # do not use lock, http is synchronous
388 out = self.send_http(messages, channel)
392 def resend_subscriptions(self):
393 for channel, messages in self.subscriptions.items():
395 self.send(messages, channel)
399 def parse_proxy_options(self, s):
400 if type(s) == type({}): return s # fixme: type should be fixed
401 if type(s) != type(""): return None
402 if s.lower() == 'none': return None
403 proxy = { "mode":"socks5", "host":"localhost" }
406 if proxy_modes.count(args[n]) == 1:
407 proxy["mode"] = args[n]
410 proxy["host"] = args[n]
413 proxy["port"] = args[n]
415 proxy["port"] = "8080" if proxy["mode"] == "http" else "1080"
419 def set_server(self, server, proxy=None):
420 # raise an error if the format isnt correct
421 a,b,c = server.split(':')
425 if server != self.server or proxy != self.proxy:
426 print "changing server:", server, proxy
429 if self.protocol in 'st':
430 self.s.shutdown(socket.SHUT_RDWR)
432 self.is_connected = False # this exits the polling loop
435 def is_empty(self, channel):
436 q = self.responses.get(channel)
443 def get_pending_requests(self, channel):
446 for k, v in self.unanswered_requests.items():
448 if c == channel: result.append(k)
451 def is_up_to_date(self, channel):
452 return self.is_empty(channel) and not self.get_pending_requests(channel)
455 def synchronous_get(self, requests, timeout=100000000):
456 # todo: use generators, unanswered_requests should be a list of arrays...
457 ids = self.send(requests)
461 r = self.responses['default'].get(True, timeout)
465 res[_id] = r.get('result')
475 self.run_tcp() if self.protocol in 'st' else self.run_http()
476 self.trigger_callback('disconnected')
477 if not self.loop: break
480 self.init_interface()
481 self.resend_subscriptions()