356 lines
10 KiB
Python
356 lines
10 KiB
Python
#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2011 thomasv@gitorious
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import random, socket, ast
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import thread, threading, traceback, sys, time, json, Queue
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DEFAULT_TIMEOUT = 5
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DEFAULT_SERVERS = ['electrum.bitcoins.sk','ecdsa.org','electrum.novit.ro'] # list of default servers
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class Interface:
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def __init__(self, host, port):
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self.host = host
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self.port = port
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self.servers = [] # actual list from IRC
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self.rtime = 0
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self.is_connected = True
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#only asynchrnous
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self.addresses_waiting_for_status = []
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self.addresses_waiting_for_history = []
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self.tx_event = threading.Event()
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#json
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self.message_id = 0
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self.messages = {}
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self.responses = Queue.Queue()
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def is_up_to_date(self):
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return self.responses.empty() and not ( self.addresses_waiting_for_status or self.addresses_waiting_for_history )
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def send_tx(self, data):
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self.tx_event.clear()
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self.send([('transaction.broadcast', [data])])
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self.tx_event.wait()
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return self.tx_result
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def queue_json_response(self, c):
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#print repr(c)
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msg_id = c.get('id')
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result = c.get('result')
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error = c.get('error')
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if msg_id is None:
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print "error: message without ID"
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return
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method, params = self.messages[msg_id]
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if error:
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print "received error:", c, method, params
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else:
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self.update_waiting_lists(method, params)
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self.responses.put({'method':method, 'params':params, 'result':result})
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def update_waiting_lists(self, method, params):
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if method == 'address.subscribe':
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addr = params[-1]
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if addr in self.addresses_waiting_for_status:
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self.addresses_waiting_for_status.remove(addr)
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elif method == 'address.get_history':
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addr = params[0]
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if addr in self.addresses_waiting_for_history:
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self.addresses_waiting_for_history.remove(addr)
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def subscribe(self, addresses):
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messages = []
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for addr in addresses:
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messages.append(('address.subscribe', [addr]))
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self.addresses_waiting_for_status.append(addr)
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self.send(messages)
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def get_servers(self, wallet):
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# loop over default servers
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# requesting servers could be an independent process
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addresses = wallet.all_addresses()
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version = wallet.electrum_version
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for server in DEFAULT_SERVERS:
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print "connecting to", server
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try:
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self.host = server
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self.start_session(addresses, version)
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wallet.host = self.host
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break
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except socket.timeout:
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continue
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except socket.error:
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continue
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except:
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traceback.print_exc(file=sys.stdout)
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class PollingInterface(Interface):
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""" non-persistent connection. synchronous calls"""
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def start_session(self, addresses, version):
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self.send([('session.new', [ version, addresses ])] )
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self.send([('server.peers',[])])
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thread.start_new_thread(self.poll_thread, (5,))
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def get_history(self, address):
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self.send([('address.get_history', [address] )])
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def poll(self):
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self.send([('session.poll', [])])
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#if is_new or wallet.remote_url:
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# self.was_updated = True
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# is_new = wallet.synchronize()
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# wallet.update_tx_history()
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# wallet.save()
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# return is_new
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#else:
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# return False
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def poll_thread(self, poll_interval):
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while self.is_connected:
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try:
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self.poll()
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time.sleep(poll_interval)
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except socket.gaierror:
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break
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except socket.error:
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break
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except:
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traceback.print_exc(file=sys.stdout)
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break
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self.is_connected = False
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self.responses.put(None)
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class NativeInterface(PollingInterface):
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def send(self, messages):
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import time
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cmds = {'session.new':'new_session',
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'server.peers':'peers',
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'session.poll':'poll',
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'transaction.broadcast':'tx',
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'address.get_history':'h',
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'address.subscribe':'address.subscribe'
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}
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for m in messages:
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method, params = m
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cmd = cmds[method]
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if cmd == 'poll':
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params = self.session_id
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if cmd == 'address.subscribe':
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params = [ self.session_id] + params
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if cmd in ['h', 'tx']:
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str_params = params[0]
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elif type(params) != type(''):
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str_params = repr( params )
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else:
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str_params = params
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t1 = time.time()
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request = repr ( (cmd, str_params) ) + "#"
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s = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
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s.settimeout(DEFAULT_TIMEOUT)
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s.connect(( self.host, self.port) )
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s.send( request )
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out = ''
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while 1:
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msg = s.recv(1024)
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if msg: out += msg
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else: break
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s.close()
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self.rtime = time.time() - t1
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self.is_connected = True
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if cmd in[ 'peers','h','poll']:
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out = ast.literal_eval( out )
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if out=='': out=None #fixme
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if cmd == 'new_session':
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self.session_id, self.message = ast.literal_eval( out )
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else:
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self.update_waiting_lists(method, params)
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self.responses.put({'method':method, 'params':params, 'result':out})
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class HttpInterface(PollingInterface):
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def start_session(self, addresses, version):
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self.session_id = None
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self.send([('client.version', [version]), ('server.banner',[]), ('numblocks.subscribe',[]), ('server.peers',[])])
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self.subscribe(addresses)
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thread.start_new_thread(self.poll_thread, (15,))
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def poll(self):
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self.send( [] )
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def send(self, messages):
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import urllib2, json, time, cookielib
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cj = cookielib.CookieJar()
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opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
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urllib2.install_opener(opener)
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t1 = time.time()
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data = []
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for m in messages:
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method, params = m
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if type(params) != type([]): params = [params]
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data.append( { 'method':method, 'id':self.message_id, 'params':params } )
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self.messages[self.message_id] = (method, params)
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self.message_id += 1
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if data:
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data_json = json.dumps(data)
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else:
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# poll with GET
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data_json = None
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host = 'http://%s:%d'%( self.host, self.port )
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headers = {'content-type': 'application/json'}
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if self.session_id:
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headers['cookie'] = 'SESSION=%s'%self.session_id
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req = urllib2.Request(host, data_json, headers)
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response_stream = urllib2.urlopen(req)
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for index, cookie in enumerate(cj):
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if cookie.name=='SESSION':
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self.session_id = cookie.value
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response = response_stream.read()
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if response:
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response = json.loads( response )
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if type(response) is not type([]):
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self.queue_json_response(response)
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else:
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for item in response:
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self.queue_json_response(item)
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self.rtime = time.time() - t1
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self.is_connected = True
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class AsynchronousInterface(Interface):
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"""json-rpc over persistent TCP connection, asynchronous"""
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def listen_thread(self):
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try:
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self.is_connected = True
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out = ''
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while self.is_connected:
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try: msg = self.s.recv(1024)
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except socket.timeout: continue
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out += msg
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if msg == '':
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self.is_connected = False
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print "disconnected."
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while True:
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s = out.find('\n')
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if s==-1: break
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c = out[0:s]
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out = out[s+1:]
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c = json.loads(c)
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self.queue_json_response(c)
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except:
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traceback.print_exc(file=sys.stdout)
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self.is_connected = False
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self.responses.put(None)
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def send(self, messages):
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out = ''
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for m in messages:
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method, params = m
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request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
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self.messages[self.message_id] = (method, params)
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self.message_id += 1
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out += request + '\n'
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self.s.send( out )
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def get_history(self, addr):
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self.send([('address.get_history', [addr])])
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self.addresses_waiting_for_history.append(addr)
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def start_session(self, addresses, version):
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self.s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
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self.s.settimeout(5)
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self.s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
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self.s.connect(( self.host, self.port))
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thread.start_new_thread(self.listen_thread, ())
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self.send([('client.version', [version]), ('server.banner',[]), ('numblocks.subscribe',[]), ('server.peers',[])])
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self.subscribe(addresses)
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def loop_interfaces_thread(wallet):
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while True:
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try:
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wallet.start_interface()
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wallet.run()
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except socket.error:
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print "socket error"
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time.sleep(5)
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except:
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traceback.print_exc(file=sys.stdout)
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time.sleep(5)
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continue
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