210 lines
7.4 KiB
Python
210 lines
7.4 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, traceback, sys, time
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DEFAULT_TIMEOUT=5
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class Interface:
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def __init__(self):
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self.default_servers = ['ecdsa.org','electrum.novit.ro'] # list of default servers
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self.host = random.choice( self.default_servers ) # random choice when the wallet is created
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self.servers = self.default_servers # actual list from IRC
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self.rtime = 0
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self.blocks = 0
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self.message = ''
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self.set_port(50000)
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self.is_connected = False
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self.was_updated = True # fixme: use a semaphore
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self.was_polled = False # True after the first poll
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def set_port(self, port_number):
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self.port = port_number
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if self.use_http():
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self.handler = self.http_json_handler
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else:
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self.handler = self.native_handler
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def use_http(self):
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return self.port in [80,81,8080,8081]
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def native_handler(self, method, params = ''):
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import time
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cmds = {'session.new':'new_session',
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'peers':'peers',
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'session.poll':'poll',
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'session.update':'update_session',
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'blockchain.transaction.broadcast':'tx',
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'blockchain.address.get_history':'h'
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}
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cmd = cmds[method]
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if type(params) != type(''): params = repr( params )
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t1 = time.time()
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request = repr ( (cmd, 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 if cmd!='peers' else self.peers_server, 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']:
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out = ast.literal_eval( out )
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return out
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def http_json_handler(self, method, params = []):
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import urllib2, json, time
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if type(params) != type([]): params = [ params ]
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t1 = time.time()
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data = { 'method':method, 'id':'jsonrpc', 'params':params }
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data_json = json.dumps(data)
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host = 'http://%s:%d'%( self.host if cmd!='peers' else self.peers_server, self.port )
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req = urllib2.Request(host, data_json, {'content-type': 'application/json'})
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response_stream = urllib2.urlopen(req)
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response = json.loads( response_stream.read() )
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out = response.get('result')
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if not out:
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print response
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self.rtime = time.time() - t1
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self.is_connected = True
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return out
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def send_tx(self, data):
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out = self.handler('blockchain.transaction.broadcast', data )
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return out
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def retrieve_history(self, address):
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out = self.handler('blockchain.address.get_history', address )
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return out
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def poll(self):
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out = self.handler('session.poll', self.session_id )
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blocks, changed_addr = ast.literal_eval( out )
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if blocks == -1: raise BaseException("session not found")
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self.blocks = int(blocks)
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if changed_addr: self.was_updated = True
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self.was_polled = True
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return changed_addr
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def new_session(self, addresses, version):
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self.was_polled = False
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out = self.handler('session.new', [ version, addresses ] )
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self.session_id, self.message = ast.literal_eval( out )
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def update_session(self, addresses):
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out = self.handler('session.update', [ self.session_id, addresses ] )
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return out
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def update_servers_thread(self):
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# if my server is not reachable, I should get the list from one of the default servers
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# requesting servers could be an independent process
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while True:
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for server in self.default_servers:
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try:
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self.peers_server = server
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out = self.handler('peers')
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self.servers = map( lambda x:x[1], out )
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# print "Received server list from %s" % self.peers_server, out
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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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time.sleep(5*60)
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def poll_interval(self):
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return 15 if self.use_http() else 5
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def update_wallet(self, wallet):
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is_new = False
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changed_addresses = self.poll()
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for addr, blk_hash in changed_addresses.items():
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if wallet.status.get(addr) != blk_hash:
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print "updating history for", addr
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wallet.history[addr] = self.retrieve_history(addr)
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wallet.status[addr] = blk_hash
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is_new = True
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if is_new:
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wallet.synchronize()
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wallet.update_tx_history()
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wallet.save()
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return True
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else:
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return False
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def update_wallet_thread(self, wallet):
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while True:
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try:
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self.is_connected = False
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self.new_session(wallet.all_addresses(), wallet.electrum_version)
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except socket.error:
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print "Not connected"
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time.sleep(self.poll_interval())
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continue
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except:
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traceback.print_exc(file=sys.stdout)
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time.sleep(self.poll_interval())
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continue
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while True:
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try:
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if self.update_wallet(wallet):
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self.update_session( wallet.all_addresses() )
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time.sleep(self.poll_interval())
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except BaseException:
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traceback.print_exc(file=sys.stdout)
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print "starting new session"
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break
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except socket.gaierror:
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self.is_connected = False
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break
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except socket.error:
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print "socket.error"
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self.is_connected = False
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break
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except:
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self.is_connected = False
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print "error"
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traceback.print_exc(file=sys.stdout)
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break
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def start(self, wallet):
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thread.start_new_thread(self.update_wallet_thread, (wallet,))
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def get_servers(self):
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thread.start_new_thread(self.update_servers_thread, ())
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def set_server(self, host, port):
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if host!= self.host or port!=self.port:
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self.host = host
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self.set_port( port )
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self.is_connected = False
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