#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2011 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import random, socket, ast, re
import threading, traceback, sys, time, json, Queue
from version import ELECTRUM_VERSION
from util import print_error
DEFAULT_TIMEOUT = 5
DEFAULT_SERVERS = [ 'ecdsa.org:50001:t',
'electrum.novit.ro:50001:t',
'uncle-enzo.info:50001:t',
'electrum.bytesized-hosting.com:50000:t'] # list of default servers
def replace_keys(obj, old_key, new_key):
if isinstance(obj, dict):
if old_key in obj:
obj[new_key] = obj[old_key]
del obj[old_key]
for elem in obj.itervalues():
replace_keys(elem, old_key, new_key)
elif isinstance(obj, list):
for elem in obj:
replace_keys(elem, old_key, new_key)
def old_to_new(d):
replace_keys(d, 'blk_hash', 'block_hash')
replace_keys(d, 'pos', 'index')
replace_keys(d, 'nTime', 'timestamp')
replace_keys(d, 'is_in', 'is_input')
replace_keys(d, 'raw_scriptPubKey', 'raw_output_script')
class Interface(threading.Thread):
def __init__(self, host, port, debug_server):
threading.Thread.__init__(self)
self.daemon = True
self.host = host
self.port = port
self.servers = [] # actual list from IRC
self.rtime = 0
self.bytes_received = 0
self.is_connected = True
self.poll_interval = 1
#json
self.message_id = 0
self.responses = Queue.Queue()
self.unanswered_requests = {}
self.debug_server = debug_server
def init_socket(self):
pass
def poke(self):
# push a fake response so that the getting thread exits its loop
self.responses.put(None)
def queue_json_response(self, c):
if self.debug_server:
print "<--",c
msg_id = c.get('id')
error = c.get('error')
if error:
print "received error:", c
return
if msg_id is not None:
method, params = self.unanswered_requests.pop(msg_id)
result = c.get('result')
else:
# notification
method = c.get('method')
params = c.get('params')
if method == 'blockchain.numblocks.subscribe':
result = params[0]
params = []
elif method == 'blockchain.address.subscribe':
addr = params[0]
result = params[1]
params = [addr]
self.responses.put({'method':method, 'params':params, 'result':result})
def subscribe(self, addresses):
messages = []
for addr in addresses:
messages.append(('blockchain.address.subscribe', [addr]))
self.send(messages)
class PollingInterface(Interface):
""" non-persistent connection. synchronous calls"""
def __init__(self, host, port, debug_server):
Interface.__init__(self, host, port, debug_server)
self.session_id = None
self.debug_server = debug_server
def get_history(self, address):
self.send([('blockchain.address.get_history', [address] )])
def poll(self):
pass
#if is_new or wallet.remote_url:
# self.was_updated = True
# is_new = wallet.synchronize()
# wallet.update_tx_history()
# wallet.save()
# return is_new
#else:
# return False
def run(self):
self.is_connected = True
while self.is_connected:
try:
if self.session_id:
self.poll()
time.sleep(self.poll_interval)
except socket.gaierror:
break
except socket.error:
break
except:
traceback.print_exc(file=sys.stdout)
break
self.is_connected = False
self.poke()
class HttpStratumInterface(PollingInterface):
def poll(self):
self.send([])
def send(self, messages):
import urllib2, json, time, cookielib
cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
urllib2.install_opener(opener)
t1 = time.time()
data = []
for m in messages:
method, params = m
if type(params) != type([]): params = [params]
data.append( { 'method':method, 'id':self.message_id, 'params':params } )
self.unanswered_requests[self.message_id] = method, params
self.message_id += 1
if data:
data_json = json.dumps(data)
else:
# poll with GET
data_json = None
host = 'http://%s:%d'%( self.host, self.port )
headers = {'content-type': 'application/json'}
if self.session_id:
headers['cookie'] = 'SESSION=%s'%self.session_id
req = urllib2.Request(host, data_json, headers)
response_stream = urllib2.urlopen(req)
for index, cookie in enumerate(cj):
if cookie.name=='SESSION':
self.session_id = cookie.value
response = response_stream.read()
self.bytes_received += len(response)
if response:
response = json.loads( response )
if type(response) is not type([]):
self.queue_json_response(response)
else:
for item in response:
self.queue_json_response(item)
if response:
self.poll_interval = 1
else:
if self.poll_interval < 15:
self.poll_interval += 1
#print self.poll_interval, response
self.rtime = time.time() - t1
self.is_connected = True
class TcpStratumInterface(Interface):
"""json-rpc over persistent TCP connection, asynchronous"""
def __init__(self, host, port, debug_server):
Interface.__init__(self, host, port, debug_server)
self.debug_server = debug_server
def init_socket(self):
self.s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
self.s.settimeout(60)
self.s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
try:
self.s.connect(( self.host, self.port))
self.is_connected = True
self.send([('server.version', [ELECTRUM_VERSION])])
print "Connected to %s:%d"%(self.host,self.port)
except:
self.is_connected = False
print_error("Not connected")
def run(self):
try:
out = ''
while self.is_connected:
try: msg = self.s.recv(1024)
except socket.timeout:
# ping the server with server.version, as a real ping does not exist yet
self.send([('server.version', [ELECTRUM_VERSION])])
continue
out += msg
self.bytes_received += len(msg)
if msg == '':
self.is_connected = False
print "Disconnected."
while True:
s = out.find('\n')
if s==-1: break
c = out[0:s]
out = out[s+1:]
c = json.loads(c)
self.queue_json_response(c)
except:
traceback.print_exc(file=sys.stdout)
self.is_connected = False
print "Poking"
self.poke()
def send(self, messages):
out = ''
for m in messages:
method, params = m
request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
self.unanswered_requests[self.message_id] = method, params
if self.debug_server:
print "-->",request
self.message_id += 1
out += request + '\n'
while out:
sent = self.s.send( out )
out = out[sent:]
def get_history(self, addr):
self.send([('blockchain.address.get_history', [addr])])
class WalletSynchronizer(threading.Thread):
def __init__(self, wallet, loop=False):
threading.Thread.__init__(self)
self.daemon = True
self.wallet = wallet
self.loop = loop
self.init_interface()
def init_interface(self):
try:
host, port, protocol = self.wallet.server.split(':')
port = int(port)
except:
self.wallet.pick_random_server()
host, port, protocol = self.wallet.server.split(':')
port = int(port)
#print protocol, host, port
if protocol == 't':
InterfaceClass = TcpStratumInterface
elif protocol == 'h':
InterfaceClass = HttpStratumInterface
else:
print_error("Error: Unknown protocol")
InterfaceClass = TcpStratumInterface
self.interface = InterfaceClass(host, port, self.wallet.debug_server)
self.wallet.interface = self.interface
def handle_response(self, r):
if r is None:
return
method = r['method']
params = r['params']
result = r['result']
if method == 'server.banner':
self.wallet.banner = result
self.wallet.was_updated = True
elif method == 'server.peers.subscribe':
servers = []
for item in result:
s = []
host = item[1]
ports = []
version = None
if len(item)>2:
for v in item[2]:
if re.match("[th]\d+",v):
ports.append((v[0],v[1:]))
if re.match("v(.?)+",v):
version = v[1:]
if ports and version:
servers.append( (host, ports) )
self.interface.servers = servers
elif method == 'blockchain.address.subscribe':
addr = params[0]
self.wallet.receive_status_callback(addr, result)
elif method == 'blockchain.address.get_history':
addr = params[0]
self.wallet.receive_history_callback(addr, result)
self.wallet.was_updated = True
elif method == 'blockchain.transaction.broadcast':
self.wallet.tx_result = result
self.wallet.tx_event.set()
elif method == 'blockchain.numblocks.subscribe':
self.wallet.blocks = result
self.wallet.was_updated = True
elif method == 'server.version':
pass
else:
print_error("Error: Unknown message:" + method + ", " + params + ", " + result)
def start_interface(self):
self.interface.init_socket()
self.interface.start()
if self.interface.is_connected:
self.wallet.start_session(self.interface)
def run(self):
import socket, time
self.start_interface()
while True:
while self.interface.is_connected:
new_addresses = self.wallet.synchronize()
if new_addresses:
self.interface.subscribe(new_addresses)
if self.wallet.is_up_to_date():
if not self.wallet.up_to_date:
self.wallet.up_to_date = True
self.wallet.was_updated = True
self.wallet.up_to_date_event.set()
else:
if self.wallet.up_to_date:
self.wallet.up_to_date = False
self.wallet.was_updated = True
if self.wallet.was_updated:
self.wallet.trigger_callbacks()
self.wallet.was_updated = False
response = self.interface.responses.get()
self.handle_response(response)
self.wallet.trigger_callbacks()
if self.loop:
time.sleep(5)
self.init_interface()
self.start_interface()
continue
else:
break