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, update_callback):
52 self.update_callbacks.append(update_callback)
54 def trigger_callbacks(self):
56 callbacks = self.update_callbacks[:]
57 [update() for update in callbacks]
60 def init_server(self, host, port, proxy=None, use_ssl=True):
64 self.use_ssl = use_ssl
66 self.servers = [] # actual list from IRC
68 self.bytes_received = 0
70 self.is_connected = True
71 self.poll_interval = 1
75 self.unanswered_requests = {}
79 def queue_json_response(self, c):
85 error = c.get('error')
88 print "received error:", c
91 if msg_id is not None:
93 method, params, channel = self.unanswered_requests.pop(msg_id)
94 result = c.get('result')
96 # notification. we should find the channel(s)..
97 method = c.get('method')
98 params = c.get('params')
100 for k,v in self.subscriptions.items():
101 if (method, params) in v:
106 if method == 'blockchain.numblocks.subscribe':
110 elif method == 'blockchain.address.subscribe':
115 response_queue = self.responses[channel]
116 response_queue.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
120 def get_response(self, channel='default', block=True, timeout=10000000000):
121 return self.responses[channel].get(block, timeout)
123 def register_channel(self, channel):
125 self.responses[channel] = Queue.Queue()
127 def poke(self, channel):
128 self.responses[channel].put(None)
131 def init_http(self, host, port, proxy=None, use_ssl=True):
132 self.init_server(host, port, proxy, use_ssl)
133 self.session_id = None
134 self.connection_msg = ('https' if self.use_ssl else 'http') + '://%s:%d'%( self.host, self.port )
138 self.is_connected = True
139 while self.is_connected:
143 time.sleep(self.poll_interval)
144 except socket.gaierror:
149 traceback.print_exc(file=sys.stdout)
152 self.is_connected = False
159 def send_http(self, messages, channel='default'):
160 import urllib2, json, time, cookielib
164 socks.setdefaultproxy(proxy_modes.index(self.proxy["mode"]), self.proxy["host"], int(self.proxy["port"]) )
165 socks.wrapmodule(urllib2)
167 cj = cookielib.CookieJar()
168 opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
169 urllib2.install_opener(opener)
176 if type(params) != type([]): params = [params]
177 data.append( { 'method':method, 'id':self.message_id, 'params':params } )
178 self.unanswered_requests[self.message_id] = method, params, channel
182 data_json = json.dumps(data)
188 headers = {'content-type': 'application/json'}
190 headers['cookie'] = 'SESSION=%s'%self.session_id
192 req = urllib2.Request(self.connection_msg, data_json, headers)
193 response_stream = urllib2.urlopen(req)
195 for index, cookie in enumerate(cj):
196 if cookie.name=='SESSION':
197 self.session_id = cookie.value
199 response = response_stream.read()
200 self.bytes_received += len(response)
202 response = json.loads( response )
203 if type(response) is not type([]):
204 self.queue_json_response(response)
206 for item in response:
207 self.queue_json_response(item)
210 self.poll_interval = 1
212 if self.poll_interval < 15:
213 self.poll_interval += 1
214 #print self.poll_interval, response
216 self.rtime = time.time() - t1
217 self.is_connected = True
222 def init_tcp(self, host, port, proxy=None, use_ssl=True):
223 self.init_server(host, port, proxy, use_ssl)
227 self.connection_msg = "%s:%d"%(self.host,self.port)
228 if self.proxy is None:
229 s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
231 self.connection_msg += " using proxy %s:%s:%s"%(self.proxy.get('mode'), self.proxy.get('host'), self.proxy.get('port'))
233 s = socks.socksocket()
234 s.setproxy(proxy_modes.index(self.proxy["mode"]), self.proxy["host"], int(self.proxy["port"]) )
237 s = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_SSLv23)
240 s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
243 s.connect(( self.host.encode('ascii'), int(self.port)))
246 self.is_connected = True
248 self.is_connected = False
255 while self.is_connected:
256 try: msg = self.s.recv(1024)
257 except socket.timeout:
259 # ping the server with server.version, as a real ping does not exist yet
260 self.send([('server.version', [ELECTRUM_VERSION])])
263 self.bytes_received += len(msg)
265 self.is_connected = False
266 print "Disconnected."
274 self.queue_json_response(c)
277 traceback.print_exc(file=sys.stdout)
279 self.is_connected = False
282 def send_tcp(self, messages, channel='default'):
283 """return the ids of the requests that we sent"""
288 request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
289 self.unanswered_requests[self.message_id] = method, params, channel
290 ids.append(self.message_id)
292 # print "-->",request
294 out += request + '\n'
296 sent = self.s.send( out )
302 def __init__(self, config=None, loop=False, servers_loaded_callback=None):
305 from simple_config import SimpleConfig
306 config = SimpleConfig()
308 threading.Thread.__init__(self)
312 self.servers_loaded_callback = servers_loaded_callback
314 self.subscriptions = {}
316 self.responses['default'] = Queue.Queue()
318 self.update_callbacks = []
319 self.lock = threading.Lock()
320 self.init_interface()
324 def init_interface(self):
325 if self.config.get('server'):
326 self.init_with_server(self.config)
328 print "Using random server..."
329 servers = DEFAULT_SERVERS
331 server = random.choice( servers )
332 servers.remove(server)
333 self.config.set_key('server', server, False)
334 self.init_with_server(self.config)
335 if self.is_connected: break
338 raise BaseException('no server available')
340 if self.is_connected:
341 print "Connected to " + self.connection_msg
342 self.send([('server.version', [ELECTRUM_VERSION])])
343 #self.send([('server.banner',[])], 'synchronizer')
345 print_error("Failed to connect " + self.connection_msg)
348 def init_with_server(self, config):
350 s = config.get('server')
351 host, port, protocol = s.split(':')
354 self.protocol = protocol
355 proxy = self.parse_proxy_options(config.get('proxy'))
356 self.server = host + ':%d:%s'%(port, protocol)
358 #print protocol, host, port
360 self.init_tcp(host, port, proxy, use_ssl=(protocol=='s'))
361 elif protocol in 'gh':
362 self.init_http(host, port, proxy, use_ssl=(protocol=='g'))
364 raise BaseException('Unknown protocol: %s'%protocol)
367 def send(self, messages, channel='default'):
370 for message in messages:
372 if m[-10:] == '.subscribe':
377 if self.subscriptions.get(channel) is None:
378 self.subscriptions[channel] = []
379 self.subscriptions[channel] += sub
381 if self.protocol in 'st':
383 out = self.send_tcp(messages, channel)
385 # do not use lock, http is synchronous
386 out = self.send_http(messages, channel)
390 def resend_subscriptions(self):
391 for channel, messages in self.subscriptions.items():
393 self.send(messages, channel)
397 def parse_proxy_options(self, s):
398 if type(s) == type({}): return s # fixme: type should be fixed
399 if type(s) != type(""): return None
400 if s.lower() == 'none': return None
401 proxy = { "mode":"socks5", "host":"localhost" }
404 if proxy_modes.count(args[n]) == 1:
405 proxy["mode"] = args[n]
408 proxy["host"] = args[n]
411 proxy["port"] = args[n]
413 proxy["port"] = "8080" if proxy["mode"] == "http" else "1080"
417 def set_server(self, server, proxy=None):
418 # raise an error if the format isnt correct
419 a,b,c = server.split(':')
423 if server != self.server or proxy != self.proxy:
424 print "changing server:", server, proxy
427 if self.protocol in 'st':
428 self.s.shutdown(socket.SHUT_RDWR)
430 self.is_connected = False # this exits the polling loop
433 def is_empty(self, channel):
434 q = self.responses.get(channel)
441 def get_pending_requests(self, channel):
444 for k, v in self.unanswered_requests.items():
446 if c == channel: result.append(k)
449 def is_up_to_date(self, channel):
450 return self.is_empty(channel) and not self.get_pending_requests(channel)
453 def synchronous_get(self, requests, timeout=100000000):
454 # todo: use generators, unanswered_requests should be a list of arrays...
455 ids = self.send(requests)
459 r = self.responses['default'].get(True, timeout)
463 res[_id] = r.get('result')
473 self.run_tcp() if self.protocol in 'st' else self.run_http()
474 self.trigger_callbacks()
475 if not self.loop: break
478 self.init_interface()
479 self.resend_subscriptions()