Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
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#!/usr/bin/env python2.7
# Copyright (c) 2012 Jonathan Warren
# Copyright (c) 2012 The Bitmessage developers
# Distributed under the MIT/X11 software license. See the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
#Right now, PyBitmessage only support connecting to stream 1. It doesn't yet contain logic to expand into further streams.
softwareVersion = '0.2.8'
verbose = 1
maximumAgeOfAnObjectThatIAmWillingToAccept = 216000 #Equals two days and 12 hours.
lengthOfTimeToLeaveObjectsInInventory = 237600 #Equals two days and 18 hours. This should be longer than maximumAgeOfAnObjectThatIAmWillingToAccept so that we don't process messages twice.
lengthOfTimeToHoldOnToAllPubkeys = 2419200 #Equals 4 weeks. You could make this longer if you want but making it shorter would not be advisable because there is a very small possibility that it could keep you from obtaining a needed pubkey for a period of time.
maximumAgeOfObjectsThatIAdvertiseToOthers = 216000 #Equals two days and 12 hours
maximumAgeOfNodesThatIAdvertiseToOthers = 10800 #Equals three hours
storeConfigFilesInSameDirectoryAsProgramByDefault = False #The user may de-select Portable Mode in the settings if they want the config files to stay in the application data folder.
useVeryEasyProofOfWorkForTesting = False #If you set this to True while on the normal network, you won't be able to send or sometimes receive messages.
import sys
try:
from PyQt4.QtCore import *
from PyQt4.QtGui import *
except Exception, err:
print 'PyBitmessage requires PyQt. You can download it from http://www.riverbankcomputing.com/software/pyqt/download or by searching Google for \'PyQt Download\' (without quotes).'
print 'Error message:', err
sys.exit()
import ConfigParser
from bitmessageui import *
from newaddressdialog import *
from newsubscriptiondialog import *
from regenerateaddresses import *
from specialaddressbehavior import *
from settings import *
from about import *
from help import *
from iconglossary import *
from addresses import *
import Queue
from defaultKnownNodes import *
import time
import socket
import threading
import hashlib
from struct import *
import pickle
import random
import sqlite3
import threading #used for the locks, not for the threads
from time import strftime, localtime, gmtime
import os
import shutil #used for moving the messages.dat file
import string
import socks
import highlevelcrypto
from pyelliptic.openssl import OpenSSL
import ctypes
from pyelliptic import arithmetic
#The next 3 are used for the API
from SimpleXMLRPCServer import *
import json
from subprocess import call #used when the API must execute an outside program
#For each stream to which we connect, several outgoingSynSender threads will exist and will collectively create 8 connections with peers.
class outgoingSynSender(QThread):
def __init__(self, parent = None):
QThread.__init__(self, parent)
def setup(self,streamNumber):
self.streamNumber = streamNumber
def run(self):
time.sleep(1)
global alreadyAttemptedConnectionsListResetTime
while True:
#time.sleep(999999)#I sometimes use this to prevent connections for testing.
if len(selfInitiatedConnections[self.streamNumber]) < 8: #maximum number of outgoing connections = 8
random.seed()
HOST, = random.sample(knownNodes[self.streamNumber], 1)
alreadyAttemptedConnectionsListLock.acquire()
while HOST in alreadyAttemptedConnectionsList or HOST in connectedHostsList:
alreadyAttemptedConnectionsListLock.release()
#print 'choosing new sample'
random.seed()
HOST, = random.sample(knownNodes[self.streamNumber], 1)
time.sleep(1)
#Clear out the alreadyAttemptedConnectionsList every half hour so that this program will again attempt a connection to any nodes, even ones it has already tried.
if (time.time() - alreadyAttemptedConnectionsListResetTime) > 1800:
alreadyAttemptedConnectionsList.clear()
alreadyAttemptedConnectionsListResetTime = int(time.time())
alreadyAttemptedConnectionsListLock.acquire()
alreadyAttemptedConnectionsList[HOST] = 0
alreadyAttemptedConnectionsListLock.release()
PORT, timeNodeLastSeen = knownNodes[self.streamNumber][HOST]
sock = socks.socksocket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(20)
if config.get('bitmessagesettings', 'socksproxytype') == 'none' and verbose >= 2:
printLock.acquire()
print 'Trying an outgoing connection to', HOST, ':', PORT
printLock.release()
#sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
elif config.get('bitmessagesettings', 'socksproxytype') == 'SOCKS4a':
if verbose >= 2:
printLock.acquire()
print '(Using SOCKS4a) Trying an outgoing connection to', HOST, ':', PORT
printLock.release()
proxytype = socks.PROXY_TYPE_SOCKS4
sockshostname = config.get('bitmessagesettings', 'sockshostname')
socksport = config.getint('bitmessagesettings', 'socksport')
rdns = True #Do domain name lookups through the proxy; though this setting doesn't really matter since we won't be doing any domain name lookups anyway.
if config.getboolean('bitmessagesettings', 'socksauthentication'):
socksusername = config.get('bitmessagesettings', 'socksusername')
sockspassword = config.get('bitmessagesettings', 'sockspassword')
sock.setproxy(proxytype, sockshostname, socksport, rdns, socksusername, sockspassword)
else:
sock.setproxy(proxytype, sockshostname, socksport, rdns)
elif config.get('bitmessagesettings', 'socksproxytype') == 'SOCKS5':
if verbose >= 2:
printLock.acquire()
print '(Using SOCKS5) Trying an outgoing connection to', HOST, ':', PORT
printLock.release()
proxytype = socks.PROXY_TYPE_SOCKS5
sockshostname = config.get('bitmessagesettings', 'sockshostname')
socksport = config.getint('bitmessagesettings', 'socksport')
rdns = True #Do domain name lookups through the proxy; though this setting doesn't really matter since we won't be doing any domain name lookups anyway.
if config.getboolean('bitmessagesettings', 'socksauthentication'):
socksusername = config.get('bitmessagesettings', 'socksusername')
sockspassword = config.get('bitmessagesettings', 'sockspassword')
sock.setproxy(proxytype, sockshostname, socksport, rdns, socksusername, sockspassword)
else:
sock.setproxy(proxytype, sockshostname, socksport, rdns)
try:
sock.connect((HOST, PORT))
rd = receiveDataThread()
self.emit(SIGNAL("passObjectThrough(PyQt_PyObject)"),rd)
objectsOfWhichThisRemoteNodeIsAlreadyAware = {}
rd.setup(sock,HOST,PORT,self.streamNumber,objectsOfWhichThisRemoteNodeIsAlreadyAware)
rd.start()
printLock.acquire()
print self, 'connected to', HOST, 'during an outgoing attempt.'
printLock.release()
sd = sendDataThread()
sd.setup(sock,HOST,PORT,self.streamNumber,objectsOfWhichThisRemoteNodeIsAlreadyAware)
sd.start()
sd.sendVersionMessage()
except socks.GeneralProxyError, err:
if verbose >= 2:
printLock.acquire()
print 'Could NOT connect to', HOST, 'during outgoing attempt.', err
printLock.release()
PORT, timeLastSeen = knownNodes[self.streamNumber][HOST]
if (int(time.time())-timeLastSeen) > 172800 and len(knownNodes[self.streamNumber]) > 1000: # for nodes older than 48 hours old if we have more than 1000 hosts in our list, delete from the knownNodes data-structure.
knownNodesLock.acquire()
del knownNodes[self.streamNumber][HOST]
knownNodesLock.release()
print 'deleting ', HOST, 'from knownNodes because it is more than 48 hours old and we could not connect to it.'
except socks.Socks5AuthError, err:
self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),"SOCKS5 Authentication problem: "+str(err))
except socks.Socks5Error, err:
pass
print 'SOCKS5 error. (It is possible that the server wants authentication).)' ,str(err)
#self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),"SOCKS5 error. Server might require authentication. "+str(err))
except socks.Socks4Error, err:
print 'Socks4Error:', err
#self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),"SOCKS4 error: "+str(err))
except socket.error, err:
if config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS':
print 'Bitmessage MIGHT be having trouble connecting to the SOCKS server. '+str(err)
#self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),"Problem: Bitmessage can not connect to the SOCKS server. "+str(err))
else:
if verbose >= 1:
printLock.acquire()
print 'Could NOT connect to', HOST, 'during outgoing attempt.', err
printLock.release()
PORT, timeLastSeen = knownNodes[self.streamNumber][HOST]
if (int(time.time())-timeLastSeen) > 172800 and len(knownNodes[self.streamNumber]) > 1000: # for nodes older than 48 hours old if we have more than 1000 hosts in our list, delete from the knownNodes data-structure.
knownNodesLock.acquire()
del knownNodes[self.streamNumber][HOST]
knownNodesLock.release()
print 'deleting ', HOST, 'from knownNodes because it is more than 48 hours old and we could not connect to it.'
except Exception, err:
sys.stderr.write('An exception has occurred in the outgoingSynSender thread that was not caught by other exception types: %s\n' % err)
time.sleep(0.1)
#Only one singleListener thread will ever exist. It creates the receiveDataThread and sendDataThread for each incoming connection. Note that it cannot set the stream number because it is not known yet- the other node will have to tell us its stream number in a version message. If we don't care about their stream, we will close the connection (within the recversion function of the recieveData thread)
class singleListener(QThread):
def __init__(self, parent = None):
QThread.__init__(self, parent)
def run(self):
#We don't want to accept incoming connections if the user is using a SOCKS proxy. If they eventually select proxy 'none' then this will start listening for connections.
while config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS':
time.sleep(300)
print 'Listening for incoming connections.'
HOST = '' # Symbolic name meaning all available interfaces
PORT = config.getint('bitmessagesettings', 'port')
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#This option apparently avoids the TIME_WAIT state so that we can rebind faster
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((HOST, PORT))
sock.listen(2)
while True:
#We don't want to accept incoming connections if the user is using a SOCKS proxy. If the user eventually select proxy 'none' then this will start listening for connections.
while config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS':
time.sleep(10)
a,(HOST,PORT) = sock.accept()
#Users are finding that if they run more than one node in the same network (thus with the same public IP), they can not connect with the second node. This is because this section of code won't accept the connection from the same IP. This problem will go away when the Bitmessage network grows beyond being tiny but in the mean time I'll comment out this code section.
"""while HOST in connectedHostsList:
print 'incoming connection is from a host in connectedHostsList (we are already connected to it). Ignoring it.'
a.close()
a,(HOST,PORT) = sock.accept()"""
rd = receiveDataThread()
self.emit(SIGNAL("passObjectThrough(PyQt_PyObject)"),rd)
objectsOfWhichThisRemoteNodeIsAlreadyAware = {}
rd.setup(a,HOST,PORT,-1,objectsOfWhichThisRemoteNodeIsAlreadyAware)
printLock.acquire()
print self, 'connected to', HOST,'during INCOMING request.'
printLock.release()
rd.start()
sd = sendDataThread()
sd.setup(a,HOST,PORT,-1,objectsOfWhichThisRemoteNodeIsAlreadyAware)
sd.start()
#This thread is created either by the synSenderThread(for outgoing connections) or the singleListenerThread(for incoming connectiosn).
class receiveDataThread(QThread):
def __init__(self, parent = None):
QThread.__init__(self, parent)
self.data = ''
self.verackSent = False
self.verackReceived = False
def setup(self,sock,HOST,port,streamNumber,objectsOfWhichThisRemoteNodeIsAlreadyAware):
self.sock = sock
self.HOST = HOST
self.PORT = port
self.sock.settimeout(600) #We'll send out a pong every 5 minutes to make sure the connection stays alive if there has been no other traffic to send lately.
self.streamNumber = streamNumber
self.payloadLength = 0 #This is the protocol payload length thus it doesn't include the 24 byte message header
self.receivedgetbiginv = False #Gets set to true once we receive a getbiginv message from our peer. An abusive peer might request it too much so we use this variable to check whether they have already asked for a big inv message.
self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = {}
connectedHostsList[self.HOST] = 0 #The very fact that this receiveData thread exists shows that we are connected to the remote host. Let's add it to this list so that an outgoingSynSender thread doesn't try to connect to it.
self.connectionIsOrWasFullyEstablished = False #set to true after the remote node and I accept each other's version messages. This is needed to allow the user interface to accurately reflect the current number of connections.
if self.streamNumber == -1: #This was an incoming connection. Send out a version message if we accept the other node's version message.
self.initiatedConnection = False
else:
self.initiatedConnection = True
selfInitiatedConnections[streamNumber][self] = 0
self.ackDataThatWeHaveYetToSend = [] #When we receive a message bound for us, we store the acknowledgement that we need to send (the ackdata) here until we are done processing all other data received from this peer.
self.objectsOfWhichThisRemoteNodeIsAlreadyAware = objectsOfWhichThisRemoteNodeIsAlreadyAware
def run(self):
while True:
try:
self.data += self.sock.recv(65536)
except socket.timeout:
printLock.acquire()
print 'Timeout occurred waiting for data. Closing receiveData thread.'
printLock.release()
break
except Exception, err:
printLock.acquire()
print 'sock.recv error. Closing receiveData thread.', err
printLock.release()
break
#print 'Received', repr(self.data)
if self.data == "":
printLock.acquire()
print 'Connection closed. Closing receiveData thread.'
printLock.release()
break
else:
self.processData()
try:
self.sock.close()
except Exception, err:
print 'Within receiveDataThread run(), self.sock.close() failed.', err
try:
del selfInitiatedConnections[self.streamNumber][self]
printLock.acquire()
print 'removed self (a receiveDataThread) from ConnectionList'
printLock.release()
except:
pass
broadcastToSendDataQueues((0, 'shutdown', self.HOST))
if self.connectionIsOrWasFullyEstablished: #We don't want to decrement the number of connections and show the result if we never incremented it in the first place (which we only do if the connection is fully established- meaning that both nodes accepted each other's version packets.)
connectionsCountLock.acquire()
connectionsCount[self.streamNumber] -= 1
self.emit(SIGNAL("updateNetworkStatusTab(PyQt_PyObject,PyQt_PyObject)"),self.streamNumber,connectionsCount[self.streamNumber])
printLock.acquire()
print 'Updating network status tab with current connections count:', connectionsCount[self.streamNumber]
printLock.release()
connectionsCountLock.release()
try:
del connectedHostsList[self.HOST]
except Exception, err:
print 'Could not delete', self.HOST, 'from connectedHostsList.', err
def processData(self):
global verbose
#if verbose >= 3:
#printLock.acquire()
#print 'self.data is currently ', repr(self.data)
#printLock.release()
if len(self.data) < 20: #if so little of the data has arrived that we can't even unpack the payload length
pass
elif self.data[0:4] != '\xe9\xbe\xb4\xd9':
if verbose >= 1:
printLock.acquire()
sys.stderr.write('The magic bytes were not correct. First 40 bytes of data: %s\n' % repr(self.data[0:40]))
print 'self.data:', self.data.encode('hex')
printLock.release()
self.data = ""
else:
self.payloadLength, = unpack('>L',self.data[16:20])
if len(self.data) >= self.payloadLength+24: #check if the whole message has arrived yet. If it has,...
if self.data[20:24] == hashlib.sha512(self.data[24:self.payloadLength+24]).digest()[0:4]:#test the checksum in the message. If it is correct...
#print 'message checksum is correct'
#The time we've last seen this node is obviously right now since we just received valid data from it. So update the knownNodes list so that other peers can be made aware of its existance.
if self.initiatedConnection: #The remote port is only something we should share with others if it is the remote node's incoming port (rather than some random operating-system-assigned outgoing port).
knownNodesLock.acquire()
knownNodes[self.streamNumber][self.HOST] = (self.PORT,int(time.time()))
knownNodesLock.release()
if self.payloadLength <= 180000000: #If the size of the message is greater than 180MB, ignore it. (I get memory errors when processing messages much larger than this though it is concievable that this value will have to be lowered if some systems are less tolarant of large messages.)
remoteCommand = self.data[4:16]
printLock.acquire()
print 'remoteCommand', repr(remoteCommand.replace('\x00','')), ' from', self.HOST
printLock.release()
if remoteCommand == 'version\x00\x00\x00\x00\x00':
self.recversion(self.data[24:self.payloadLength+24])
elif remoteCommand == 'verack\x00\x00\x00\x00\x00\x00':
self.recverack()
elif remoteCommand == 'addr\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recaddr(self.data[24:self.payloadLength+24])
elif remoteCommand == 'getpubkey\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recgetpubkey(self.data[24:self.payloadLength+24])
elif remoteCommand == 'pubkey\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recpubkey(self.data[24:self.payloadLength+24])
elif remoteCommand == 'inv\x00\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recinv(self.data[24:self.payloadLength+24])
elif remoteCommand == 'getdata\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recgetdata(self.data[24:self.payloadLength+24])
elif remoteCommand == 'getbiginv\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.sendBigInv()
elif remoteCommand == 'msg\x00\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recmsg(self.data[24:self.payloadLength+24])
elif remoteCommand == 'broadcast\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.recbroadcast(self.data[24:self.payloadLength+24])
elif remoteCommand == 'getaddr\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.sendaddr()
elif remoteCommand == 'ping\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
self.sendpong()
elif remoteCommand == 'pong\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
pass
elif remoteCommand == 'alert\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
pass
self.data = self.data[self.payloadLength+24:]#take this message out and then process the next message
if self.data == '':
while len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 0:
random.seed()
objectHash, = random.sample(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave, 1)
if objectHash in inventory:
printLock.acquire()
print 'Inventory (in memory) already has object listed in inv message.'
printLock.release()
del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[objectHash]
elif isInSqlInventory(objectHash):
if verbose >= 3:
printLock.acquire()
print 'Inventory (SQL on disk) already has object listed in inv message.'
printLock.release()
del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[objectHash]
else:
self.sendgetdata(objectHash)
del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[objectHash] #It is possible that the remote node doesn't respond with the object. In that case, we'll very likely get it from someone else anyway.
if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) == 0:
printLock.acquire()
print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave)
printLock.release()
break
if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) == 0:
printLock.acquire()
print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave)
printLock.release()
if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 0:
printLock.acquire()
print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave)
printLock.release()
if len(self.ackDataThatWeHaveYetToSend) > 0:
self.data = self.ackDataThatWeHaveYetToSend.pop()
self.processData()
else:
print 'Checksum incorrect. Clearing this message.'
self.data = self.data[self.payloadLength+24:]
def isProofOfWorkSufficient(self,data):
POW, = unpack('>Q',hashlib.sha512(hashlib.sha512(data[:8]+ hashlib.sha512(data[8:]).digest()).digest()).digest()[0:8])
#print 'POW:', POW
#Notice that I have divided the averageProofOfWorkNonceTrialsPerByte by two. This makes the POW requirement easier. This gives us wiggle-room: if we decide that we want to make the POW easier, the change won't obsolete old clients because they already expect a lower POW. If we decide that the current work done by clients feels approperate then we can remove this division by 2 and make the requirement match what is actually done by a sending node. If we want to raise the POW requirement then old nodes will HAVE to upgrade no matter what.
return POW <= 2**64 / ((len(data)+payloadLengthExtraBytes) * (averageProofOfWorkNonceTrialsPerByte/2))
def sendpong(self):
print 'Sending pong'
self.sock.sendall('\xE9\xBE\xB4\xD9\x70\x6F\x6E\x67\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xcf\x83\xe1\x35')
def recverack(self):
print 'verack received'
self.verackReceived = True
if self.verackSent == True:
#We have thus both sent and received a verack.
self.connectionFullyEstablished()
def connectionFullyEstablished(self):
self.connectionIsOrWasFullyEstablished = True
if not self.initiatedConnection:
self.emit(SIGNAL("setStatusIcon(PyQt_PyObject)"),'green')
#Update the 'Network Status' tab
connectionsCountLock.acquire()
connectionsCount[self.streamNumber] += 1
self.emit(SIGNAL("updateNetworkStatusTab(PyQt_PyObject,PyQt_PyObject)"),self.streamNumber,connectionsCount[self.streamNumber])
connectionsCountLock.release()
remoteNodeIncomingPort, remoteNodeSeenTime = knownNodes[self.streamNumber][self.HOST]
printLock.acquire()
print 'Connection fully established with', self.HOST, remoteNodeIncomingPort
print 'broadcasting addr from within connectionFullyEstablished function.'
printLock.release()
self.broadcastaddr([(int(time.time()), self.streamNumber, 1, self.HOST, remoteNodeIncomingPort)]) #This lets all of our peers know about this new node.
self.sendaddr() #This is one large addr message to this one peer.
if not self.initiatedConnection and connectionsCount[self.streamNumber] > 150:
printLock.acquire()
print 'We are connected to too many people. Closing connection.'
printLock.release()
self.sock.close()
return
self.sendBigInv()
def sendBigInv(self): #I used capitals in for this function name because there is no such Bitmessage command as 'biginv'.
if self.receivedgetbiginv:
print 'We have already sent a big inv message to this peer. Ignoring request.'
return
else:
self.receivedgetbiginv = True
sqlLock.acquire()
#Select all hashes which are younger than two days old and in this stream.
t = (int(time.time())-maximumAgeOfObjectsThatIAdvertiseToOthers,int(time.time())-lengthOfTimeToHoldOnToAllPubkeys,self.streamNumber)
sqlSubmitQueue.put('''SELECT hash FROM inventory WHERE ((receivedtime>? and objecttype<>'pubkey') or (receivedtime>? and objecttype='pubkey')) and streamnumber=?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
bigInvList = {}
for row in queryreturn:
hash, = row
if hash not in self.objectsOfWhichThisRemoteNodeIsAlreadyAware:
bigInvList[hash] = 0
else:
printLock.acquire()
print 'Not including an object hash in a big inv message because the remote node is already aware of it.'#This line is here to check that this feature is working.
printLock.release()
#We also have messages in our inventory in memory (which is a python dictionary). Let's fetch those too.
for hash, storedValue in inventory.items():
if hash not in self.objectsOfWhichThisRemoteNodeIsAlreadyAware:
objectType, streamNumber, payload, receivedTime = storedValue
if streamNumber == self.streamNumber and receivedTime > int(time.time())-maximumAgeOfObjectsThatIAdvertiseToOthers:
bigInvList[hash] = 0
else:
printLock.acquire()
print 'Not including an object hash in a big inv message because the remote node is already aware of it.'#This line is here to check that this feature is working.
printLock.release()
numberOfObjectsInInvMessage = 0
payload = ''
#Now let us start appending all of these hashes together. They will be sent out in a big inv message to our new peer.
for hash, storedValue in bigInvList.items():
payload += hash
numberOfObjectsInInvMessage += 1
if numberOfObjectsInInvMessage >= 50000: #We can only send a max of 50000 items per inv message but we may have more objects to advertise. They must be split up into multiple inv messages.
self.sendinvMessageToJustThisOnePeer(numberOfObjectsInInvMessage,payload)
payload = ''
numberOfObjectsInInvMessage = 0
if numberOfObjectsInInvMessage > 0:
self.sendinvMessageToJustThisOnePeer(numberOfObjectsInInvMessage,payload)
#Self explanatory. Notice that there is also a broadcastinv function for broadcasting invs to everyone in our stream.
def sendinvMessageToJustThisOnePeer(self,numberOfObjects,payload):
payload = encodeVarint(numberOfObjects) + payload
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'inv\x00\x00\x00\x00\x00\x00\x00\x00\x00'
headerData += pack('>L',len(payload))
headerData += hashlib.sha512(payload).digest()[:4]
printLock.acquire()
print 'Sending huge inv message with', numberOfObjects, 'objects to just this one peer'
printLock.release()
self.sock.sendall(headerData + payload)
#We have received a broadcast message
def recbroadcast(self,data):
self.messageProcessingStartTime = time.time()
#First we must check to make sure the proof of work is sufficient.
if not self.isProofOfWorkSufficient(data):
print 'Proof of work in broadcast message insufficient.'
return
readPosition = 8 #bypass the nonce
embeddedTime, = unpack('>I',data[readPosition:readPosition+4])
#This section is used for the transition from 32 bit time to 64 bit time in the protocol.
if embeddedTime == 0:
embeddedTime, = unpack('>Q',data[readPosition:readPosition+8])
readPosition += 8
else:
readPosition += 4
if embeddedTime > (int(time.time())+10800): #prevent funny business
print 'The embedded time in this broadcast message is more than three hours in the future. That doesn\'t make sense. Ignoring message.'
return
if embeddedTime < (int(time.time())-maximumAgeOfAnObjectThatIAmWillingToAccept):
print 'The embedded time in this broadcast message is too old. Ignoring message.'
return
if len(data) < 180:
print 'The payload length of this broadcast packet is unreasonably low. Someone is probably trying funny business. Ignoring message.'
return
inventoryLock.acquire()
self.inventoryHash = calculateInventoryHash(data)
if self.inventoryHash in inventory:
print 'We have already received this broadcast object. Ignoring.'
inventoryLock.release()
return
elif isInSqlInventory(self.inventoryHash):
print 'We have already received this broadcast object (it is stored on disk in the SQL inventory). Ignoring it.'
inventoryLock.release()
return
#It is valid so far. Let's let our peers know about it.
objectType = 'broadcast'
inventory[self.inventoryHash] = (objectType, self.streamNumber, data, embeddedTime)
inventoryLock.release()
self.broadcastinv(self.inventoryHash)
self.emit(SIGNAL("incrementNumberOfBroadcastsProcessed()"))
self.processbroadcast(readPosition,data)#When this function returns, we will have either successfully processed this broadcast because we are interested in it, ignored it because we aren't interested in it, or found problem with the broadcast that warranted ignoring it.
# Let us now set lengthOfTimeWeShouldUseToProcessThisMessage. If we haven't used the specified amount of time, we shall sleep. These values are mostly the same values used for msg messages although broadcast messages are processed faster.
if len(data) > 100000000: #Size is greater than 100 megabytes
lengthOfTimeWeShouldUseToProcessThisMessage = 100 #seconds.
elif len(data) > 10000000: #Between 100 and 10 megabytes
lengthOfTimeWeShouldUseToProcessThisMessage = 20 #seconds.
elif len(data) > 1000000: #Between 10 and 1 megabyte
lengthOfTimeWeShouldUseToProcessThisMessage = 3 #seconds.
else: #Less than 1 megabyte
lengthOfTimeWeShouldUseToProcessThisMessage = .1 #seconds.
sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - (time.time()- self.messageProcessingStartTime)
if sleepTime > 0:
printLock.acquire()
print 'Timing attack mitigation: Sleeping for', sleepTime ,'seconds.'
printLock.release()
time.sleep(sleepTime)
printLock.acquire()
print 'Total message processing time:', time.time()- self.messageProcessingStartTime, 'seconds.'
printLock.release()
#A broadcast message has a valid time and POW and requires processing. The recbroadcast function calls this one.
def processbroadcast(self,readPosition,data):
broadcastVersion, broadcastVersionLength = decodeVarint(data[readPosition:readPosition+9])
if broadcastVersion <> 1:
#Cannot decode incoming broadcast versions higher than 1. Assuming the sender isn\' being silly, you should upgrade Bitmessage because this message shall be ignored.
return
readPosition += broadcastVersionLength
beginningOfPubkeyPosition = readPosition #used when we add the pubkey to our pubkey table
sendersAddressVersion, sendersAddressVersionLength = decodeVarint(data[readPosition:readPosition+9])
if sendersAddressVersion <= 1 or sendersAddressVersion >=3:
#Cannot decode senderAddressVersion higher than 2. Assuming the sender isn\' being silly, you should upgrade Bitmessage because this message shall be ignored.
return
readPosition += sendersAddressVersionLength
if sendersAddressVersion == 2:
sendersStream, sendersStreamLength = decodeVarint(data[readPosition:readPosition+9])
if sendersStream <= 0 or sendersStream <> self.streamNumber:
return
readPosition += sendersStreamLength
behaviorBitfield = data[readPosition:readPosition+4]
readPosition += 4
sendersPubSigningKey = '\x04' + data[readPosition:readPosition+64]
readPosition += 64
sendersPubEncryptionKey = '\x04' + data[readPosition:readPosition+64]
readPosition += 64
endOfPubkeyPosition = readPosition
sendersHash = data[readPosition:readPosition+20]
if sendersHash not in broadcastSendersForWhichImWatching:
#Display timing data
printLock.acquire()
print 'Time spent deciding that we are not interested in this broadcast:', time.time()- self.messageProcessingStartTime
printLock.release()
return
#At this point, this message claims to be from sendersHash and we are interested in it. We still have to hash the public key to make sure it is truly the key that matches the hash, and also check the signiture.
readPosition += 20
sha = hashlib.new('sha512')
sha.update(sendersPubSigningKey+sendersPubEncryptionKey)
ripe = hashlib.new('ripemd160')
ripe.update(sha.digest())
if ripe.digest() != sendersHash:
#The sender of this message lied.
return
messageEncodingType, messageEncodingTypeLength = decodeVarint(data[readPosition:readPosition+9])
if messageEncodingType == 0:
return
readPosition += messageEncodingTypeLength
messageLength, messageLengthLength = decodeVarint(data[readPosition:readPosition+9])
readPosition += messageLengthLength
message = data[readPosition:readPosition+messageLength]
readPosition += messageLength
readPositionAtBottomOfMessage = readPosition
signatureLength, signatureLengthLength = decodeVarint(data[readPosition:readPosition+9])
readPosition += signatureLengthLength
signature = data[readPosition:readPosition+signatureLength]
try:
highlevelcrypto.verify(data[12:readPositionAtBottomOfMessage],signature,sendersPubSigningKey.encode('hex'))
print 'ECDSA verify passed'
except Exception, err:
print 'ECDSA verify failed', err
return
#verify passed
#Let's store the public key in case we want to reply to this person.
#We don't have the correct nonce or time (which would let us send out a pubkey message) so we'll just fill it with 1's. We won't be able to send this pubkey to others (without doing the proof of work ourselves, which this program is programmed to not do.)
t = (ripe.digest(),False,'\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF'+'\xFF\xFF\xFF\xFF'+data[beginningOfPubkeyPosition:endOfPubkeyPosition],int(time.time()),'yes')
sqlLock.acquire()
sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
workerQueue.put(('newpubkey',(sendersAddressVersion,sendersStream,ripe.digest()))) #This will check to see whether we happen to be awaiting this pubkey in order to send a message. If we are, it will do the POW and send it.
fromAddress = encodeAddress(sendersAddressVersion,sendersStream,ripe.digest())
printLock.acquire()
print 'fromAddress:', fromAddress
printLock.release()
if messageEncodingType == 2:
bodyPositionIndex = string.find(message,'\nBody:')
if bodyPositionIndex > 1:
subject = message[8:bodyPositionIndex]
body = message[bodyPositionIndex+6:]
else:
subject = ''
body = message
elif messageEncodingType == 1:
body = message
subject = ''
elif messageEncodingType == 0:
print 'messageEncodingType == 0. Doing nothing with the message.'
else:
body = 'Unknown encoding type.\n\n' + repr(message)
subject = ''
toAddress = '[Broadcast subscribers]'
if messageEncodingType <> 0:
sqlLock.acquire()
t = (self.inventoryHash,toAddress,fromAddress,subject,int(time.time()),body,'inbox',messageEncodingType,0)
sqlSubmitQueue.put('''INSERT INTO inbox VALUES (?,?,?,?,?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
self.emit(SIGNAL("displayNewInboxMessage(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"),self.inventoryHash,toAddress,fromAddress,subject,body)
#If we are behaving as an API then we might need to run an outside command to let some program know that a new message has arrived.
if safeConfigGetBoolean('bitmessagesettings','apienabled'):
try:
apiNotifyPath = config.get('bitmessagesettings','apinotifypath')
except:
apiNotifyPath = ''
if apiNotifyPath != '':
call([apiNotifyPath, "newBroadcast"])
#Display timing data
printLock.acquire()
print 'Time spent processing this interesting broadcast:', time.time()- self.messageProcessingStartTime
printLock.release()
#We have received a msg message.
def recmsg(self,data):
self.messageProcessingStartTime = time.time()
#First we must check to make sure the proof of work is sufficient.
if not self.isProofOfWorkSufficient(data):
print 'Proof of work in msg message insufficient.'
return
readPosition = 8
embeddedTime, = unpack('>I',data[readPosition:readPosition+4])
#This section is used for the transition from 32 bit time to 64 bit time in the protocol.
if embeddedTime == 0:
embeddedTime, = unpack('>Q',data[readPosition:readPosition+8])
readPosition += 8
else:
readPosition += 4
if embeddedTime > int(time.time())+10800:
print 'The time in the msg message is too new. Ignoring it. Time:', embeddedTime
return
if embeddedTime < int(time.time())-maximumAgeOfAnObjectThatIAmWillingToAccept:
print 'The time in the msg message is too old. Ignoring it. Time:', embeddedTime
return
streamNumberAsClaimedByMsg, streamNumberAsClaimedByMsgLength = decodeVarint(data[readPosition:readPosition+9])
if streamNumberAsClaimedByMsg != self.streamNumber:
print 'The stream number encoded in this msg (' + str(streamNumberAsClaimedByMsg) + ') message does not match the stream number on which it was received. Ignoring it.'
return
readPosition += streamNumberAsClaimedByMsgLength
self.inventoryHash = calculateInventoryHash(data)
inventoryLock.acquire()
if self.inventoryHash in inventory:
print 'We have already received this msg message. Ignoring.'
inventoryLock.release()
return
elif isInSqlInventory(self.inventoryHash):
print 'We have already received this msg message (it is stored on disk in the SQL inventory). Ignoring it.'
inventoryLock.release()
return
#This msg message is valid. Let's let our peers know about it.
objectType = 'msg'
inventory[self.inventoryHash] = (objectType, self.streamNumber, data, embeddedTime)
inventoryLock.release()
self.broadcastinv(self.inventoryHash)
self.emit(SIGNAL("incrementNumberOfMessagesProcessed()"))
self.processmsg(readPosition,data) #When this function returns, we will have either successfully processed the message bound for us, ignored it because it isn't bound for us, or found problem with the message that warranted ignoring it.
# Let us now set lengthOfTimeWeShouldUseToProcessThisMessage. If we haven't used the specified amount of time, we shall sleep. These values are based on test timings and you may change them at-will.
if len(data) > 100000000: #Size is greater than 100 megabytes
lengthOfTimeWeShouldUseToProcessThisMessage = 100 #seconds. Actual length of time it took my computer to decrypt and verify the signature of a 100 MB message: 3.7 seconds.
elif len(data) > 10000000: #Between 100 and 10 megabytes
lengthOfTimeWeShouldUseToProcessThisMessage = 20 #seconds. Actual length of time it took my computer to decrypt and verify the signature of a 10 MB message: 0.53 seconds. Actual length of time it takes in practice when processing a real message: 1.44 seconds.
elif len(data) > 1000000: #Between 10 and 1 megabyte
lengthOfTimeWeShouldUseToProcessThisMessage = 3 #seconds. Actual length of time it took my computer to decrypt and verify the signature of a 1 MB message: 0.18 seconds. Actual length of time it takes in practice when processing a real message: 0.30 seconds.
else: #Less than 1 megabyte
lengthOfTimeWeShouldUseToProcessThisMessage = .6 #seconds. Actual length of time it took my computer to decrypt and verify the signature of a 100 KB message: 0.15 seconds. Actual length of time it takes in practice when processing a real message: 0.25 seconds.
sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - (time.time()- self.messageProcessingStartTime)
if sleepTime > 0:
printLock.acquire()
print 'Timing attack mitigation: Sleeping for', sleepTime ,'seconds.'
printLock.release()
time.sleep(sleepTime)
printLock.acquire()
print 'Total message processing time:', time.time()- self.messageProcessingStartTime, 'seconds.'
printLock.release()
#A msg message has a valid time and POW and requires processing. The recmsg function calls this one.
def processmsg(self,readPosition, encryptedData):
initialDecryptionSuccessful = False
#Let's check whether this is a message acknowledgement bound for us.
if encryptedData[readPosition:] in ackdataForWhichImWatching:
printLock.acquire()
print 'This msg IS an acknowledgement bound for me.'
printLock.release()
del ackdataForWhichImWatching[encryptedData[readPosition:]]
t = ('ackreceived',encryptedData[readPosition:])
sqlLock.acquire()
sqlSubmitQueue.put('UPDATE sent SET status=? WHERE ackdata=?')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
self.emit(SIGNAL("updateSentItemStatusByAckdata(PyQt_PyObject,PyQt_PyObject)"),encryptedData[readPosition:],'Acknowledgement of the message received just now.')
return
else:
printLock.acquire()
print 'This was NOT an acknowledgement bound for me.'
#print 'ackdataForWhichImWatching', ackdataForWhichImWatching
printLock.release()
#This is not an acknowledgement bound for me. See if it is a message bound for me by trying to decrypt it with my private keys.
for key, cryptorObject in myECCryptorObjects.items():
try:
unencryptedData = cryptorObject.decrypt(encryptedData[readPosition:])
toRipe = key #This is the RIPE hash of my pubkeys. We need this below to compare to the destination_ripe included in the encrypted data.
initialDecryptionSuccessful = True
print 'EC decryption successful using key associated with ripe hash:', key.encode('hex')
break
except Exception, err:
pass
#print 'cryptorObject.decrypt Exception:', err
if not initialDecryptionSuccessful:
#This is not a message bound for me.
printLock.acquire()
print 'Length of time program spent failing to decrypt this message:', time.time()- self.messageProcessingStartTime, 'seconds.'
printLock.release()
else:
#This is a message bound for me.
readPosition = 0
messageVersion, messageVersionLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
readPosition += messageVersionLength
if messageVersion != 1:
print 'Cannot understand message versions other than one. Ignoring message.'
return
sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
readPosition += sendersAddressVersionNumberLength
if sendersAddressVersionNumber == 0:
print 'Cannot understand sendersAddressVersionNumber = 0. Ignoring message.'
return
if sendersAddressVersionNumber >= 3:
print 'Sender\'s address version number', sendersAddressVersionNumber, ' not yet supported. Ignoring message.'
return
if len(unencryptedData) < 170:
print 'Length of the unencrypted data is unreasonably short. Sanity check failed. Ignoring message.'
return
sendersStreamNumber, sendersStreamNumberLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
if sendersStreamNumber == 0:
print 'sender\'s stream number is 0. Ignoring message.'
return
readPosition += sendersStreamNumberLength
behaviorBitfield = unencryptedData[readPosition:readPosition+4]
readPosition += 4
pubSigningKey = '\x04' + unencryptedData[readPosition:readPosition+64]
readPosition += 64
pubEncryptionKey = '\x04' + unencryptedData[readPosition:readPosition+64]
readPosition += 64
endOfThePublicKeyPosition = readPosition #needed for when we store the pubkey in our database of pubkeys for later use.
if toRipe != unencryptedData[readPosition:readPosition+20]:
printLock.acquire()
print 'The original sender of this message did not send it to you. Someone is attempting a Surreptitious Forwarding Attack.'
print 'See: http://world.std.com/~dtd/sign_encrypt/sign_encrypt7.html'
print 'your toRipe:', toRipe.encode('hex')
print 'embedded destination toRipe:', unencryptedData[readPosition:readPosition+20].encode('hex')
printLock.release()
return
readPosition += 20
messageEncodingType, messageEncodingTypeLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
readPosition += messageEncodingTypeLength
messageLength, messageLengthLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
readPosition += messageLengthLength
message = unencryptedData[readPosition:readPosition+messageLength]
#print 'First 150 characters of message:', repr(message[:150])
readPosition += messageLength
ackLength, ackLengthLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
readPosition += ackLengthLength
ackData = unencryptedData[readPosition:readPosition+ackLength]
readPosition += ackLength
positionOfBottomOfAckData = readPosition #needed to mark the end of what is covered by the signature
signatureLength, signatureLengthLength = decodeVarint(unencryptedData[readPosition:readPosition+10])
readPosition += signatureLengthLength
signature = unencryptedData[readPosition:readPosition+signatureLength]
try:
highlevelcrypto.verify(unencryptedData[:positionOfBottomOfAckData],signature,pubSigningKey.encode('hex'))
print 'ECDSA verify passed'
except Exception, err:
print 'ECDSA verify failed', err
return
printLock.acquire()
print 'As a matter of intellectual curiosity, here is the Bitcoin address associated with the keys owned by the other person:', calculateBitcoinAddressFromPubkey(pubSigningKey), ' ..and here is the testnet address:',calculateTestnetAddressFromPubkey(pubSigningKey),'. The other person must take their private signing key from Bitmessage and import it into Bitcoin (or a service like Blockchain.info) for it to be of any use. Do not use this unless you know what you are doing.'
printLock.release()
#calculate the fromRipe.
sha = hashlib.new('sha512')
sha.update(pubSigningKey+pubEncryptionKey)
ripe = hashlib.new('ripemd160')
ripe.update(sha.digest())
#Let's store the public key in case we want to reply to this person.
#We don't have the correct nonce or time (which would let us send out a pubkey message) so we'll just fill it with 1's. We won't be able to send this pubkey to others (without doing the proof of work ourselves, which this program is programmed to not do.)
t = (ripe.digest(),False,'\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF'+'\xFF\xFF\xFF\xFF'+unencryptedData[messageVersionLength:endOfThePublicKeyPosition],int(time.time()),'yes')
sqlLock.acquire()
sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
workerQueue.put(('newpubkey',(sendersAddressVersionNumber,sendersStreamNumber,ripe.digest()))) #This will check to see whether we happen to be awaiting this pubkey in order to send a message. If we are, it will do the POW and send it.
blockMessage = False #Gets set to True if the user shouldn't see the message according to black or white lists.
fromAddress = encodeAddress(sendersAddressVersionNumber,sendersStreamNumber,ripe.digest())
if config.get('bitmessagesettings', 'blackwhitelist') == 'black': #If we are using a blacklist
t = (fromAddress,)
sqlLock.acquire()
sqlSubmitQueue.put('''SELECT label, enabled FROM blacklist where address=?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
for row in queryreturn:
label, enabled = row
if enabled:
printLock.acquire()
print 'Message ignored because address is in blacklist.'
printLock.release()
blockMessage = True
else: #We're using a whitelist
t = (fromAddress,)
sqlLock.acquire()
sqlSubmitQueue.put('''SELECT label, enabled FROM whitelist where address=?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
if queryreturn == []:
print 'Message ignored because address not in whitelist.'
blockMessage = True
for row in queryreturn: #It could be in the whitelist but disabled. Let's check.
label, enabled = row
if not enabled:
print 'Message ignored because address in whitelist but not enabled.'
blockMessage = True
if not blockMessage:
print 'fromAddress:', fromAddress
print 'First 150 characters of message:', repr(message[:150])
toAddress = myAddressesByHash[toRipe] #Look up my address based on the RIPE hash.
toLabel = config.get(toAddress, 'label')
if toLabel == '':
toLabel = addressInKeysFile
if messageEncodingType == 2:
bodyPositionIndex = string.find(message,'\nBody:')
if bodyPositionIndex > 1:
subject = message[8:bodyPositionIndex]
body = message[bodyPositionIndex+6:]
else:
subject = ''
body = message
elif messageEncodingType == 1:
body = message
subject = ''
elif messageEncodingType == 0:
print 'messageEncodingType == 0. Doing nothing with the message. They probably just sent it so that we would store their public key or send their ack data for them.'
else:
body = 'Unknown encoding type.\n\n' + repr(message)
subject = ''
if messageEncodingType <> 0:
sqlLock.acquire()
t = (self.inventoryHash,toAddress,fromAddress,subject,int(time.time()),body,'inbox',messageEncodingType,0)
sqlSubmitQueue.put('''INSERT INTO inbox VALUES (?,?,?,?,?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
self.emit(SIGNAL("displayNewInboxMessage(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"),self.inventoryHash,toAddress,fromAddress,subject,body)
#If we are behaving as an API then we might need to run an outside command to let some program know that a new message has arrived.
if safeConfigGetBoolean('bitmessagesettings','apienabled'):
try:
apiNotifyPath = config.get('bitmessagesettings','apinotifypath')
except:
apiNotifyPath = ''
if apiNotifyPath != '':
call([apiNotifyPath, "newMessage"])
#Let us now check and see whether our receiving address is behaving as a mailing list
if safeConfigGetBoolean(toAddress,'mailinglist'):
try:
mailingListName = config.get(toAddress, 'mailinglistname')
except:
mailingListName = ''
#Let us send out this message as a broadcast
subject = self.addMailingListNameToSubject(subject,mailingListName)
#Let us now send this message out as a broadcast
message = strftime("%a, %Y-%m-%d %H:%M:%S UTC",gmtime()) + ' Message ostensibly from ' + fromAddress + ':\n\n' + body
fromAddress = toAddress #The fromAddress for the broadcast that we are about to send is the toAddress (my address) for the msg message we are currently processing.
ackdata = OpenSSL.rand(32) #We don't actually need the ackdata for acknowledgement since this is a broadcast message but we can use it to update the user interface when the POW is done generating.
toAddress = '[Broadcast subscribers]'
ripe = ''
sqlLock.acquire()
t = ('',toAddress,ripe,fromAddress,subject,message,ackdata,int(time.time()),'broadcastpending',1,1,'sent',2)
sqlSubmitQueue.put('''INSERT INTO sent VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
self.emit(SIGNAL("displayNewSentMessage(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"),toAddress,'[Broadcast subscribers]',fromAddress,subject,message,ackdata)
workerQueue.put(('sendbroadcast',(fromAddress,subject,message)))
if self.isAckDataValid(ackData):
print 'ackData is valid. Will process it.'
self.ackDataThatWeHaveYetToSend.append(ackData) #When we have processed all data, the processData function will pop the ackData out and process it as if it is a message received from our peer.
#Display timing data
timeRequiredToAttemptToDecryptMessage = time.time()- self.messageProcessingStartTime
successfullyDecryptMessageTimings.append(timeRequiredToAttemptToDecryptMessage)
sum = 0
for item in successfullyDecryptMessageTimings:
sum += item
printLock.acquire()
print 'Time to decrypt this message successfully:', timeRequiredToAttemptToDecryptMessage
print 'Average time for all message decryption successes since startup:', sum / len(successfullyDecryptMessageTimings)
printLock.release()
def isAckDataValid(self,ackData):
if len(ackData) < 24:
print 'The length of ackData is unreasonably short. Not sending ackData.'
return False
if ackData[0:4] != '\xe9\xbe\xb4\xd9':
print 'Ackdata magic bytes were wrong. Not sending ackData.'
return False
ackDataPayloadLength, = unpack('>L',ackData[16:20])
if len(ackData)-24 != ackDataPayloadLength:
print 'ackData payload length doesn\'t match the payload length specified in the header. Not sending ackdata.'
return False
if ackData[4:16] != 'getpubkey\x00\x00\x00' and ackData[4:16] != 'pubkey\x00\x00\x00\x00\x00\x00' and ackData[4:16] != 'msg\x00\x00\x00\x00\x00\x00\x00\x00\x00' and ackData[4:16] != 'broadcast\x00\x00\x00' :
return False
return True
def addMailingListNameToSubject(self,subject,mailingListName):
subject = subject.strip()
if subject[:3] == 'Re:' or subject[:3] == 'RE:':
subject = subject[3:].strip()
if '['+mailingListName+']' in subject:
return subject
else:
return '['+mailingListName+'] ' + subject
#We have received a pubkey
def recpubkey(self,data):
self.pubkeyProcessingStartTime = time.time()
if len(data) < 146 or len(data) >600: #sanity check
return
#We must check to make sure the proof of work is sufficient.
if not self.isProofOfWorkSufficient(data):
print 'Proof of work in pubkey message insufficient.'
return
readPosition = 8 #for the nonce
embeddedTime, = unpack('>I',data[readPosition:readPosition+4])
#This section is used for the transition from 32 bit time to 64 bit time in the protocol.
if embeddedTime == 0:
embeddedTime, = unpack('>Q',data[readPosition:readPosition+8])
readPosition += 8
else:
readPosition += 4
if embeddedTime < int(time.time())-lengthOfTimeToHoldOnToAllPubkeys:
printLock.acquire()
print 'The embedded time in this pubkey message is too old. Ignoring. Embedded time is:', embeddedTime
printLock.release()
return
if embeddedTime > int(time.time()) + 10800:
printLock.acquire()
print 'The embedded time in this pubkey message more than several hours in the future. This is irrational. Ignoring message.'
printLock.release()
return
addressVersion, varintLength = decodeVarint(data[readPosition:readPosition+10])
readPosition += varintLength
streamNumber, varintLength = decodeVarint(data[readPosition:readPosition+10])
readPosition += varintLength
if self.streamNumber != streamNumber:
print 'stream number embedded in this pubkey doesn\'t match our stream number. Ignoring.'
return
inventoryHash = calculateInventoryHash(data)
inventoryLock.acquire()
if inventoryHash in inventory:
print 'We have already received this pubkey. Ignoring it.'
inventoryLock.release()
return
elif isInSqlInventory(inventoryHash):
print 'We have already received this pubkey (it is stored on disk in the SQL inventory). Ignoring it.'
inventoryLock.release()
return
objectType = 'pubkey'
inventory[inventoryHash] = (objectType, self.streamNumber, data, embeddedTime)
inventoryLock.release()
self.broadcastinv(inventoryHash)
self.emit(SIGNAL("incrementNumberOfPubkeysProcessed()"))
self.processpubkey(data)
lengthOfTimeWeShouldUseToProcessThisMessage = .2
sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - (time.time()- self.pubkeyProcessingStartTime)
if sleepTime > 0:
#printLock.acquire()
#print 'Timing attack mitigation: Sleeping for', sleepTime ,'seconds.'
#printLock.release()
time.sleep(sleepTime)
#printLock.acquire()
#print 'Total pubkey processing time:', time.time()- self.pubkeyProcessingStartTime, 'seconds.'
#printLock.release()
def processpubkey(self,data):
readPosition = 8 #for the nonce
embeddedTime, = unpack('>I',data[readPosition:readPosition+4])
readPosition += 4 #for the time
addressVersion, varintLength = decodeVarint(data[readPosition:readPosition+10])
readPosition += varintLength
streamNumber, varintLength = decodeVarint(data[readPosition:readPosition+10])
readPosition += varintLength
if addressVersion == 0:
print '(Within processpubkey) addressVersion of 0 doesn\'t make sense.'
return
if addressVersion >= 3 or addressVersion == 1:
printLock.acquire()
print 'This version of Bitmessage cannot handle version', addressVersion,'addresses.'
printLock.release()
return
if addressVersion == 2:
if len(data) < 146: #sanity check. This is the minimum possible length.
print '(within processpubkey) payloadLength less than 146. Sanity check failed.'
return
bitfieldBehaviors = data[readPosition:readPosition+4]
readPosition += 4
publicSigningKey = data[readPosition:readPosition+64]
#Is it possible for a public key to be invalid such that trying to encrypt or sign with it will cause an error? If it is, we should probably test these keys here.
readPosition += 64
publicEncryptionKey = data[readPosition:readPosition+64]
if len(publicEncryptionKey) < 64:
print 'publicEncryptionKey length less than 64. Sanity check failed.'
return
sha = hashlib.new('sha512')
sha.update('\x04'+publicSigningKey+'\x04'+publicEncryptionKey)
ripeHasher = hashlib.new('ripemd160')
ripeHasher.update(sha.digest())
ripe = ripeHasher.digest()
printLock.acquire()
print 'within recpubkey, addressVersion:', addressVersion, ', streamNumber:', streamNumber
print 'ripe', ripe.encode('hex')
print 'publicSigningKey in hex:', publicSigningKey.encode('hex')
print 'publicEncryptionKey in hex:', publicEncryptionKey.encode('hex')
printLock.release()
t = (ripe,)
sqlLock.acquire()
sqlSubmitQueue.put('''SELECT usedpersonally FROM pubkeys WHERE hash=? AND usedpersonally='yes' ''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
if queryreturn != []: #if this pubkey is already in our database and if we have used it personally:
print 'We HAVE used this pubkey personally. Updating time.'
t = (ripe,True,data,embeddedTime,'yes')
sqlLock.acquire()
sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
workerQueue.put(('newpubkey',(addressVersion,streamNumber,ripe)))
else:
print 'We have NOT used this pubkey personally. Inserting in database.'
t = (ripe,True,data,embeddedTime,'no') #This will also update the embeddedTime.
sqlLock.acquire()
sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
sqlSubmitQueue.put('commit')
sqlLock.release()
printLock.acquire()
printLock.release()
workerQueue.put(('newpubkey',(addressVersion,streamNumber,ripe)))
#We have received a getpubkey message
def recgetpubkey(self,data):
if not self.isProofOfWorkSufficient(data):
print 'Proof of work in getpubkey message insufficient.'
return
if len(data) < 34:
print 'getpubkey message doesn\'t contain enough data. Ignoring.'
return
readPosition = 8 #bypass the nonce
embeddedTime, = unpack('>I',data[readPosition:readPosition+4])
#This section is used for the transition from 32 bit time to 64 bit time in the protocol.
if embeddedTime == 0:
embeddedTime, = unpack('>Q',data[readPosition:readPosition+8])
readPosition += 8
else:
readPosition += 4
if embeddedTime > int(time.time())+10800:
print 'The time in this getpubkey message is too new. Ignoring it. Time:', embeddedTime
return
if embeddedTime < int(time.time())-maximumAgeOfAnObjectThatIAmWillingToAccept:
print 'The time in this getpubkey message is too old. Ignoring it. Time:', embeddedTime
return
addressVersionNumber, addressVersionLength = decodeVarint(data[readPosition:readPosition+10])
readPosition += addressVersionLength
streamNumber, streamNumberLength = decodeVarint(data[readPosition:readPosition+10])
if streamNumber <> self.streamNumber:
print 'The streamNumber', streamNumber, 'doesn\'t match our stream number:', self.streamNumber
return
readPosition += streamNumberLength
inventoryHash = calculateInventoryHash(data)
inventoryLock.acquire()
if inventoryHash in inventory:
print 'We have already received this getpubkey request. Ignoring it.'
inventoryLock.release()
return
elif isInSqlInventory(inventoryHash):
print 'We have already received this getpubkey request (it is stored on disk in the SQL inventory). Ignoring it.'
inventoryLock.release()
return
objectType = 'getpubkey'
inventory[inventoryHash] = (objectType, self.streamNumber, data, embeddedTime)
inventoryLock.release()
#This getpubkey request is valid so far. Forward to peers.
self.broadcastinv(inventoryHash)
if addressVersionNumber == 0:
print 'The addressVersionNumber of the pubkey request is zero. That doesn\'t make any sense. Ignoring it.'
return
elif addressVersionNumber == 1:
print 'The addressVersionNumber of the pubkey request is 1 which isn\'t supported anymore. Ignoring it.'
return
elif addressVersionNumber > 2:
print 'The addressVersionNumber of the pubkey request is too high. Can\'t understand. Ignoring it.'
return
requestedHash = data[readPosition:readPosition+20]
if len(requestedHash) != 20:
print 'The length of the requested hash is not 20 bytes. Something is wrong. Ignoring.'
return
print 'the hash requested in this getpubkey request is:', requestedHash.encode('hex')
"""sqlLock.acquire()
t = (requestedHash,int(time.time())-lengthOfTimeToHoldOnToAllPubkeys) #this prevents SQL injection
sqlSubmitQueue.put('''SELECT hash, transmitdata, time FROM pubkeys WHERE hash=? AND havecorrectnonce=1 AND time>?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
if queryreturn != []:
for row in queryreturn:
hash, payload, timeEncodedInPubkey = row
printLock.acquire()
print 'We have the requested pubkey stored in our database of pubkeys. Sending it.'
printLock.release()
inventoryHash = calculateInventoryHash(payload)
objectType = 'pubkey'
inventory[inventoryHash] = (objectType, self.streamNumber, payload, timeEncodedInPubkey)#If the time embedded in this pubkey is more than 3 days old then this object isn't going to last very long in the inventory- the cleanerThread is going to come along and move it from the inventory in memory to the SQL inventory and then delete it from the SQL inventory. It should still find its way back to the original requestor if he is online however.
self.broadcastinv(inventoryHash)"""
#else: #the pubkey is not in our database of pubkeys. Let's check if the requested key is ours (which would mean we should do the POW, put it in the pubkey table, and broadcast out the pubkey.)
if requestedHash in myAddressesByHash: #if this address hash is one of mine
try:
lastPubkeySendTime = int(config.get(myAddressesByHash[requestedHash],'lastpubkeysendtime'))
except:
lastPubkeySendTime = 0
print 'lastPubkeySendTime is',lastPubkeySendTime
if lastPubkeySendTime < time.time()-lengthOfTimeToHoldOnToAllPubkeys: #If the last time we sent our pubkey was 28 days ago
printLock.acquire()
print 'Found getpubkey-requested-hash in my list of EC hashes. Telling Worker thread to do the POW for a pubkey message and send it out.'
printLock.release()
workerQueue.put(('doPOWForMyV2Pubkey',requestedHash))
else:
printLock.acquire()
print 'This getpubkey request is not for any of my keys.'
printLock.release()
#We have received an inv message
def recinv(self,data):
numberOfItemsInInv, lengthOfVarint = decodeVarint(data[:10])
if len(data) < lengthOfVarint + (numberOfItemsInInv * 32):
print 'inv message doesn\'t contain enough data. Ignoring.'
return
if numberOfItemsInInv == 1: #we'll just request this data from the person who advertised the object.
self.objectsOfWhichThisRemoteNodeIsAlreadyAware[data[lengthOfVarint:32+lengthOfVarint]] = 0
if data[lengthOfVarint:32+lengthOfVarint] in inventory:
printLock.acquire()
print 'Inventory (in memory) has inventory item already.'
printLock.release()
elif isInSqlInventory(data[lengthOfVarint:32+lengthOfVarint]):
print 'Inventory (SQL on disk) has inventory item already.'
else:
self.sendgetdata(data[lengthOfVarint:32+lengthOfVarint])
else:
print 'inv message lists', numberOfItemsInInv, 'objects.'
for i in range(numberOfItemsInInv): #upon finishing dealing with an incoming message, the receiveDataThread will request a random object from the peer. This way if we get multiple inv messages from multiple peers which list mostly the same objects, we will make getdata requests for different random objects from the various peers.
if len(data[lengthOfVarint+(32*i):32+lengthOfVarint+(32*i)]) == 32: #The length of an inventory hash should be 32. If it isn't 32 then the remote node is either badly programmed or behaving nefariously.
self.objectsOfWhichThisRemoteNodeIsAlreadyAware[data[lengthOfVarint+(32*i):32+lengthOfVarint+(32*i)]] = 0
self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[data[lengthOfVarint+(32*i):32+lengthOfVarint+(32*i)]] = 0
#Send a getdata message to our peer to request the object with the given hash
def sendgetdata(self,hash):
print 'sending getdata to retrieve object with hash:', hash.encode('hex')
payload = '\x01' + hash
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'getdata\x00\x00\x00\x00\x00'
headerData += pack('>L',len(payload)) #payload length. Note that we add an extra 8 for the nonce.
headerData += hashlib.sha512(payload).digest()[:4]
try:
self.sock.sendall(headerData + payload)
except Exception, err:
#if not 'Bad file descriptor' in err:
printLock.acquire()
sys.stderr.write('sock.send error: %s\n' % err)
printLock.release()
#We have received a getdata request from our peer
def recgetdata(self, data):
numberOfRequestedInventoryItems, lengthOfVarint = decodeVarint(data[:10])
if len(data) < lengthOfVarint + (32 * numberOfRequestedInventoryItems):
print 'getdata message does not contain enough data. Ignoring.'
return
for i in xrange(numberOfRequestedInventoryItems):
hash = data[lengthOfVarint+(i*32):32+lengthOfVarint+(i*32)]
printLock.acquire()
print 'received getdata request for item:', hash.encode('hex')
printLock.release()
#print 'inventory is', inventory
if hash in inventory:
objectType, streamNumber, payload, receivedTime = inventory[hash]
self.sendData(objectType,payload)
else:
t = (hash,)
sqlLock.acquire()
sqlSubmitQueue.put('''select objecttype, payload from inventory where hash=?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
if queryreturn <> []:
for row in queryreturn:
objectType, payload = row
self.sendData(objectType,payload)
else:
print 'Someone asked for an object with a getdata which is not in either our memory inventory or our SQL inventory. That shouldn\'t have happened.'
#Our peer has requested (in a getdata message) that we send an object.
def sendData(self,objectType,payload):
if objectType == 'pubkey':
print 'sending pubkey'
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'pubkey\x00\x00\x00\x00\x00\x00'
headerData += pack('>L',len(payload)) #payload length.
headerData += hashlib.sha512(payload).digest()[:4]
self.sock.sendall(headerData + payload)
elif objectType == 'getpubkey' or objectType == 'pubkeyrequest':
print 'sending getpubkey'
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'getpubkey\x00\x00\x00'
headerData += pack('>L',len(payload)) #payload length.
headerData += hashlib.sha512(payload).digest()[:4]
self.sock.sendall(headerData + payload)
elif objectType == 'msg':
print 'sending msg'
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'msg\x00\x00\x00\x00\x00\x00\x00\x00\x00'
headerData += pack('>L',len(payload)) #payload length.
headerData += hashlib.sha512(payload).digest()[:4]
self.sock.sendall(headerData + payload)
elif objectType == 'broadcast':
print 'sending broadcast'
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'broadcast\x00\x00\x00'
headerData += pack('>L',len(payload)) #payload length.
headerData += hashlib.sha512(payload).digest()[:4]
self.sock.sendall(headerData + payload)
else:
sys.stderr.write('Error: sendData has been asked to send a strange objectType: %s\n' % str(objectType))
#Send an inv message with just one hash to all of our peers
def broadcastinv(self,hash):
printLock.acquire()
print 'broadcasting inv with hash:', hash.encode('hex')
printLock.release()
broadcastToSendDataQueues((self.streamNumber, 'sendinv', hash))
#We have received an addr message.
def recaddr(self,data):
listOfAddressDetailsToBroadcastToPeers = []
numberOfAddressesIncluded = 0
numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint(data[:10])
if verbose >= 1:
printLock.acquire()
print 'addr message contains', numberOfAddressesIncluded, 'IP addresses.'
printLock.release()
if self.remoteProtocolVersion == 1:
if numberOfAddressesIncluded > 1000 or numberOfAddressesIncluded == 0:
return
if len(data) != lengthOfNumberOfAddresses + (34 * numberOfAddressesIncluded):
print 'addr message does not contain the correct amount of data. Ignoring.'
return
needToWriteKnownNodesToDisk = False
for i in range(0,numberOfAddressesIncluded):
try:
if data[16+lengthOfNumberOfAddresses+(34*i):28+lengthOfNumberOfAddresses+(34*i)] != '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':
printLock.acquire()
print 'Skipping IPv6 address.', repr(data[16+lengthOfNumberOfAddresses+(34*i):28+lengthOfNumberOfAddresses+(34*i)])
printLock.release()
continue
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
try:
recaddrStream, = unpack('>I',data[4+lengthOfNumberOfAddresses+(34*i):8+lengthOfNumberOfAddresses+(34*i)])
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
if recaddrStream == 0:
continue
if recaddrStream != self.streamNumber and recaddrStream != (self.streamNumber * 2) and recaddrStream != ((self.streamNumber * 2) + 1): #if the embedded stream number is not in my stream or either of my child streams then ignore it. Someone might be trying funny business.
continue
try:
recaddrServices, = unpack('>Q',data[8+lengthOfNumberOfAddresses+(34*i):16+lengthOfNumberOfAddresses+(34*i)])
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
try:
recaddrPort, = unpack('>H',data[32+lengthOfNumberOfAddresses+(34*i):34+lengthOfNumberOfAddresses+(34*i)])
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
#print 'Within recaddr(): IP', recaddrIP, ', Port', recaddrPort, ', i', i
hostFromAddrMessage = socket.inet_ntoa(data[28+lengthOfNumberOfAddresses+(34*i):32+lengthOfNumberOfAddresses+(34*i)])
#print 'hostFromAddrMessage', hostFromAddrMessage
if data[28+lengthOfNumberOfAddresses+(34*i)] == '\x7F':
print 'Ignoring IP address in loopback range:', hostFromAddrMessage
continue
if data[28+lengthOfNumberOfAddresses+(34*i)] == '\x0A':
print 'Ignoring IP address in private range:', hostFromAddrMessage
continue
if data[28+lengthOfNumberOfAddresses+(34*i):30+lengthOfNumberOfAddresses+(34*i)] == '\xC0A8':
print 'Ignoring IP address in private range:', hostFromAddrMessage
continue
timeSomeoneElseReceivedMessageFromThisNode, = unpack('>I',data[lengthOfNumberOfAddresses+(34*i):4+lengthOfNumberOfAddresses+(34*i)]) #This is the 'time' value in the received addr message.
if recaddrStream not in knownNodes: #knownNodes is a dictionary of dictionaries with one outer dictionary for each stream. If the outer stream dictionary doesn't exist yet then we must make it.
knownNodesLock.acquire()
knownNodes[recaddrStream] = {}
knownNodesLock.release()
if hostFromAddrMessage not in knownNodes[recaddrStream]:
if len(knownNodes[recaddrStream]) < 20000 and timeSomeoneElseReceivedMessageFromThisNode > (int(time.time())-10800) and timeSomeoneElseReceivedMessageFromThisNode < (int(time.time()) + 10800): #If we have more than 20000 nodes in our list already then just forget about adding more. Also, make sure that the time that someone else received a message from this node is within three hours from now.
knownNodesLock.acquire()
knownNodes[recaddrStream][hostFromAddrMessage] = (recaddrPort, timeSomeoneElseReceivedMessageFromThisNode)
knownNodesLock.release()
needToWriteKnownNodesToDisk = True
hostDetails = (timeSomeoneElseReceivedMessageFromThisNode, recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort)
listOfAddressDetailsToBroadcastToPeers.append(hostDetails)
else:
PORT, timeLastReceivedMessageFromThisNode = knownNodes[recaddrStream][hostFromAddrMessage]#PORT in this case is either the port we used to connect to the remote node, or the port that was specified by someone else in a past addr message.
if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())):
knownNodesLock.acquire()
knownNodes[recaddrStream][hostFromAddrMessage] = (PORT, timeSomeoneElseReceivedMessageFromThisNode)
knownNodesLock.release()
if PORT != recaddrPort:
print 'Strange occurance: The port specified in an addr message', str(recaddrPort),'does not match the port',str(PORT),'that this program (or some other peer) used to connect to it',str(hostFromAddrMessage),'. Perhaps they changed their port or are using a strange NAT configuration.'
if needToWriteKnownNodesToDisk: #Runs if any nodes were new to us. Also, share those nodes with our peers.
output = open(appdata + 'knownnodes.dat', 'wb')
knownNodesLock.acquire()
pickle.dump(knownNodes, output)
knownNodesLock.release()
output.close()
self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers) #no longer broadcast
printLock.acquire()
print 'knownNodes currently has', len(knownNodes[self.streamNumber]), 'nodes for this stream.'
printLock.release()
elif self.remoteProtocolVersion >= 2: #The difference is that in protocol version 2, network addresses use 64 bit times rather than 32 bit times.
if numberOfAddressesIncluded > 1000 or numberOfAddressesIncluded == 0:
return
if len(data) != lengthOfNumberOfAddresses + (38 * numberOfAddressesIncluded):
print 'addr message does not contain the correct amount of data. Ignoring.'
return
needToWriteKnownNodesToDisk = False
for i in range(0,numberOfAddressesIncluded):
try:
if data[20+lengthOfNumberOfAddresses+(38*i):32+lengthOfNumberOfAddresses+(38*i)] != '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':
printLock.acquire()
print 'Skipping IPv6 address.', repr(data[20+lengthOfNumberOfAddresses+(38*i):32+lengthOfNumberOfAddresses+(38*i)])
printLock.release()
continue
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
try:
recaddrStream, = unpack('>I',data[8+lengthOfNumberOfAddresses+(38*i):12+lengthOfNumberOfAddresses+(38*i)])
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
if recaddrStream == 0:
continue
if recaddrStream != self.streamNumber and recaddrStream != (self.streamNumber * 2) and recaddrStream != ((self.streamNumber * 2) + 1): #if the embedded stream number is not in my stream or either of my child streams then ignore it. Someone might be trying funny business.
continue
try:
recaddrServices, = unpack('>Q',data[12+lengthOfNumberOfAddresses+(38*i):20+lengthOfNumberOfAddresses+(38*i)])
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
try:
recaddrPort, = unpack('>H',data[36+lengthOfNumberOfAddresses+(38*i):38+lengthOfNumberOfAddresses+(38*i)])
except Exception, err:
printLock.acquire()
sys.stderr.write('ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err))
printLock.release()
break #giving up on unpacking any more. We should still be connected however.
#print 'Within recaddr(): IP', recaddrIP, ', Port', recaddrPort, ', i', i
hostFromAddrMessage = socket.inet_ntoa(data[32+lengthOfNumberOfAddresses+(38*i):36+lengthOfNumberOfAddresses+(38*i)])
#print 'hostFromAddrMessage', hostFromAddrMessage
if data[32+lengthOfNumberOfAddresses+(38*i)] == '\x7F':
print 'Ignoring IP address in loopback range:', hostFromAddrMessage
continue
if data[32+lengthOfNumberOfAddresses+(38*i)] == '\x0A':
print 'Ignoring IP address in private range:', hostFromAddrMessage
continue
if data[32+lengthOfNumberOfAddresses+(38*i):34+lengthOfNumberOfAddresses+(38*i)] == '\xC0A8':
print 'Ignoring IP address in private range:', hostFromAddrMessage
continue
timeSomeoneElseReceivedMessageFromThisNode, = unpack('>Q',data[lengthOfNumberOfAddresses+(38*i):8+lengthOfNumberOfAddresses+(38*i)]) #This is the 'time' value in the received addr message. 64-bit.
if recaddrStream not in knownNodes: #knownNodes is a dictionary of dictionaries with one outer dictionary for each stream. If the outer stream dictionary doesn't exist yet then we must make it.
knownNodesLock.acquire()
knownNodes[recaddrStream] = {}
knownNodesLock.release()
if hostFromAddrMessage not in knownNodes[recaddrStream]:
if len(knownNodes[recaddrStream]) < 20000 and timeSomeoneElseReceivedMessageFromThisNode > (int(time.time())-10800) and timeSomeoneElseReceivedMessageFromThisNode < (int(time.time()) + 10800): #If we have more than 20000 nodes in our list already then just forget about adding more. Also, make sure that the time that someone else received a message from this node is within three hours from now.
knownNodesLock.acquire()
knownNodes[recaddrStream][hostFromAddrMessage] = (recaddrPort, timeSomeoneElseReceivedMessageFromThisNode)
knownNodesLock.release()
print 'added new node', hostFromAddrMessage, 'to knownNodes in stream', recaddrStream
needToWriteKnownNodesToDisk = True
hostDetails = (timeSomeoneElseReceivedMessageFromThisNode, recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort)
listOfAddressDetailsToBroadcastToPeers.append(hostDetails)
else:
PORT, timeLastReceivedMessageFromThisNode = knownNodes[recaddrStream][hostFromAddrMessage]#PORT in this case is either the port we used to connect to the remote node, or the port that was specified by someone else in a past addr message.
if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())):
knownNodesLock.acquire()
knownNodes[recaddrStream][hostFromAddrMessage] = (PORT, timeSomeoneElseReceivedMessageFromThisNode)
knownNodesLock.release()
if PORT != recaddrPort:
print 'Strange occurance: The port specified in an addr message', str(recaddrPort),'does not match the port',str(PORT),'that this program (or some other peer) used to connect to it',str(hostFromAddrMessage),'. Perhaps they changed their port or are using a strange NAT configuration.'
if needToWriteKnownNodesToDisk: #Runs if any nodes were new to us. Also, share those nodes with our peers.
output = open(appdata + 'knownnodes.dat', 'wb')
knownNodesLock.acquire()
pickle.dump(knownNodes, output)
knownNodesLock.release()
output.close()
self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers)
printLock.acquire()
print 'knownNodes currently has', len(knownNodes[self.streamNumber]), 'nodes for this stream.'
printLock.release()
#Function runs when we want to broadcast an addr message to all of our peers. Runs when we learn of nodes that we didn't previously know about and want to share them with our peers.
def broadcastaddr(self,listOfAddressDetailsToBroadcastToPeers):
numberOfAddressesInAddrMessage = len(listOfAddressDetailsToBroadcastToPeers)
payload = ''
for hostDetails in listOfAddressDetailsToBroadcastToPeers:
timeLastReceivedMessageFromThisNode, streamNumber, services, host, port = hostDetails
payload += pack('>Q',timeLastReceivedMessageFromThisNode) #now uses 64-bit time
payload += pack('>I',streamNumber)
payload += pack('>q',services) #service bit flags offered by this node
payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + socket.inet_aton(host)
payload += pack('>H',port)#remote port
payload = encodeVarint(numberOfAddressesInAddrMessage) + payload
datatosend = '\xE9\xBE\xB4\xD9addr\x00\x00\x00\x00\x00\x00\x00\x00'
datatosend = datatosend + pack('>L',len(payload)) #payload length
datatosend = datatosend + hashlib.sha512(payload).digest()[0:4]
datatosend = datatosend + payload
if verbose >= 1:
printLock.acquire()
print 'Broadcasting addr with', numberOfAddressesInAddrMessage, 'entries.'
printLock.release()
broadcastToSendDataQueues((self.streamNumber, 'sendaddr', datatosend))
#Send a big addr message to our peer
def sendaddr(self):
addrsInMyStream = {}
addrsInChildStreamLeft = {}
addrsInChildStreamRight = {}
#print 'knownNodes', knownNodes
#We are going to share a maximum number of 1000 addrs with our peer. 500 from this stream, 250 from the left child stream, and 250 from the right child stream.
if len(knownNodes[self.streamNumber]) > 0:
for i in range(500):
random.seed()
HOST, = random.sample(knownNodes[self.streamNumber], 1)
if self.isHostInPrivateIPRange(HOST):
continue
addrsInMyStream[HOST] = knownNodes[self.streamNumber][HOST]
if len(knownNodes[self.streamNumber*2]) > 0:
for i in range(250):
random.seed()
HOST, = random.sample(knownNodes[self.streamNumber*2], 1)
if self.isHostInPrivateIPRange(HOST):
continue
addrsInChildStreamLeft[HOST] = knownNodes[self.streamNumber*2][HOST]
if len(knownNodes[(self.streamNumber*2)+1]) > 0:
for i in range(250):
random.seed()
HOST, = random.sample(knownNodes[(self.streamNumber*2)+1], 1)
if self.isHostInPrivateIPRange(HOST):
continue
addrsInChildStreamRight[HOST] = knownNodes[(self.streamNumber*2)+1][HOST]
numberOfAddressesInAddrMessage = 0
payload = ''
#print 'addrsInMyStream.items()', addrsInMyStream.items()
for HOST, value in addrsInMyStream.items():
PORT, timeLastReceivedMessageFromThisNode = value
if timeLastReceivedMessageFromThisNode > (int(time.time())- maximumAgeOfNodesThatIAdvertiseToOthers): #If it is younger than 3 hours old..
numberOfAddressesInAddrMessage += 1
if self.remoteProtocolVersion == 1:
payload += pack('>I',timeLastReceivedMessageFromThisNode) #32-bit time
else:
payload += pack('>Q',timeLastReceivedMessageFromThisNode) #64-bit time
payload += pack('>I',self.streamNumber)
payload += pack('>q',1) #service bit flags offered by this node
payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + socket.inet_aton(HOST)
payload += pack('>H',PORT)#remote port
for HOST, value in addrsInChildStreamLeft.items():
PORT, timeLastReceivedMessageFromThisNode = value
if timeLastReceivedMessageFromThisNode > (int(time.time())- maximumAgeOfNodesThatIAdvertiseToOthers): #If it is younger than 3 hours old..
numberOfAddressesInAddrMessage += 1
if self.remoteProtocolVersion == 1:
payload += pack('>I',timeLastReceivedMessageFromThisNode) #32-bit time
else:
payload += pack('>Q',timeLastReceivedMessageFromThisNode) #64-bit time
payload += pack('>I',self.streamNumber*2)
payload += pack('>q',1) #service bit flags offered by this node
payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + socket.inet_aton(HOST)
payload += pack('>H',PORT)#remote port
for HOST, value in addrsInChildStreamRight.items():
PORT, timeLastReceivedMessageFromThisNode = value
if timeLastReceivedMessageFromThisNode > (int(time.time())- maximumAgeOfNodesThatIAdvertiseToOthers): #If it is younger than 3 hours old..
numberOfAddressesInAddrMessage += 1
if self.remoteProtocolVersion == 1:
payload += pack('>I',timeLastReceivedMessageFromThisNode) #32-bit time
else:
payload += pack('>Q',timeLastReceivedMessageFromThisNode) #64-bit time
payload += pack('>I',(self.streamNumber*2)+1)
payload += pack('>q',1) #service bit flags offered by this node
payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + socket.inet_aton(HOST)
payload += pack('>H',PORT)#remote port
payload = encodeVarint(numberOfAddressesInAddrMessage) + payload
datatosend = '\xE9\xBE\xB4\xD9addr\x00\x00\x00\x00\x00\x00\x00\x00'
datatosend = datatosend + pack('>L',len(payload)) #payload length
datatosend = datatosend + hashlib.sha512(payload).digest()[0:4]
datatosend = datatosend + payload
if verbose >= 1:
printLock.acquire()
print 'Sending addr with', numberOfAddressesInAddrMessage, 'entries.'
printLock.release()
self.sock.sendall(datatosend)
#We have received a version message
def recversion(self,data):
if len(data) < 83:
#This version message is unreasonably short. Forget it.
return
elif not self.verackSent:
self.remoteProtocolVersion, = unpack('>L',data[:4])
#print 'remoteProtocolVersion', self.remoteProtocolVersion
self.myExternalIP = socket.inet_ntoa(data[40:44])
#print 'myExternalIP', self.myExternalIP
self.remoteNodeIncomingPort, = unpack('>H',data[70:72])
#print 'remoteNodeIncomingPort', self.remoteNodeIncomingPort
useragentLength, lengthOfUseragentVarint = decodeVarint(data[80:84])
readPosition = 80 + lengthOfUseragentVarint
useragent = data[readPosition:readPosition+useragentLength]
readPosition += useragentLength
numberOfStreamsInVersionMessage, lengthOfNumberOfStreamsInVersionMessage = decodeVarint(data[readPosition:])
readPosition += lengthOfNumberOfStreamsInVersionMessage
self.streamNumber, lengthOfRemoteStreamNumber = decodeVarint(data[readPosition:])
printLock.acquire()
print 'Remote node useragent:', useragent, ' stream number:', self.streamNumber
printLock.release()
if self.streamNumber != 1:
self.sock.close()
printLock.acquire()
print 'Closed connection to', self.HOST, 'because they are interested in stream', self.streamNumber,'.'
printLock.release()
return
#If this was an incoming connection, then the sendData thread doesn't know the stream. We have to set it.
if not self.initiatedConnection:
broadcastToSendDataQueues((0,'setStreamNumber',(self.HOST,self.streamNumber)))
if data[72:80] == eightBytesOfRandomDataUsedToDetectConnectionsToSelf:
self.sock.close()
printLock.acquire()
print 'Closing connection to myself: ', self.HOST
printLock.release()
return
broadcastToSendDataQueues((0,'setRemoteProtocolVersion',(self.HOST,self.remoteProtocolVersion)))
knownNodesLock.acquire()
knownNodes[self.streamNumber][self.HOST] = (self.remoteNodeIncomingPort, int(time.time()))
output = open(appdata + 'knownnodes.dat', 'wb')
pickle.dump(knownNodes, output)
knownNodesLock.release()
output.close()
self.sendverack()
if self.initiatedConnection == False:
self.sendversion()
#Sends a version message
def sendversion(self):
printLock.acquire()
print 'Sending version message'
printLock.release()
self.sock.sendall(assembleVersionMessage(self.HOST,self.PORT,self.streamNumber))
#Sends a verack message
def sendverack(self):
printLock.acquire()
print 'Sending verack'
printLock.release()
self.sock.sendall('\xE9\xBE\xB4\xD9\x76\x65\x72\x61\x63\x6B\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xcf\x83\xe1\x35')
#cf 83 e1 35
self.verackSent = True
if self.verackReceived == True:
self.connectionFullyEstablished()
def isHostInPrivateIPRange(self,host):
if host[:3] == '10.':
return True
if host[:4] == '172.':
if host[6] == '.':
if int(host[4:6]) >= 16 and int(host[4:6]) <= 31:
return True
if host[:8] == '192.168.':
return True
return False
#Every connection to a peer has a sendDataThread (and also a receiveDataThread).
class sendDataThread(QThread):
def __init__(self, parent = None):
QThread.__init__(self, parent)
self.mailbox = Queue.Queue()
sendDataQueues.append(self.mailbox)
self.data = ''
def setup(self,sock,HOST,PORT,streamNumber,objectsOfWhichThisRemoteNodeIsAlreadyAware):
self.sock = sock
self.HOST = HOST
self.PORT = PORT
self.streamNumber = streamNumber
self.lastTimeISentData = int(time.time()) #If this value increases beyond five minutes ago, we'll send a pong message to keep the connection alive.
self.objectsOfWhichThisRemoteNodeIsAlreadyAware = objectsOfWhichThisRemoteNodeIsAlreadyAware
printLock.acquire()
print 'The streamNumber of this sendDataThread (ID:', id(self),') at setup() is', self.streamNumber
printLock.release()
def sendVersionMessage(self):
datatosend = assembleVersionMessage(self.HOST,self.PORT,self.streamNumber)#the IP and port of the remote host, and my streamNumber.
printLock.acquire()
print 'Sending version packet: ', repr(datatosend)
printLock.release()
self.sock.sendall(datatosend)
self.versionSent = 1
def run(self):
while True:
deststream,command,data = self.mailbox.get()
#printLock.acquire()
#print 'sendDataThread, destream:', deststream, ', Command:', command, ', ID:',id(self), ', HOST:', self.HOST
#printLock.release()
if deststream == self.streamNumber or deststream == 0:
if command == 'shutdown':
if data == self.HOST or data == 'all':
printLock.acquire()
print 'sendDataThread thread (associated with', self.HOST,') ID:',id(self), 'shutting down now.'
self.sock.close()
sendDataQueues.remove(self.mailbox)
print 'len of sendDataQueues', len(sendDataQueues)
printLock.release()
break
#When you receive an incoming connection, a sendDataThread is created even though you don't yet know what stream number the remote peer is interested in. They will tell you in a version message and if you too are interested in that stream then you will continue on with the connection and will set the streamNumber of this send data thread here:
elif command == 'setStreamNumber':
hostInMessage, specifiedStreamNumber = data
if hostInMessage == self.HOST:
printLock.acquire()
print 'setting the stream number in the sendData thread (ID:',id(self), ') to', specifiedStreamNumber
printLock.release()
self.streamNumber = specifiedStreamNumber
elif command == 'setRemoteProtocolVersion':
hostInMessage, specifiedRemoteProtocolVersion = data
if hostInMessage == self.HOST:
printLock.acquire()
print 'setting the remote node\'s protocol version in the sendData thread (ID:',id(self), ') to', specifiedRemoteProtocolVersion
printLock.release()
self.remoteProtocolVersion = specifiedRemoteProtocolVersion
elif command == 'sendaddr':
if self.remoteProtocolVersion == 1:
printLock.acquire()
print 'a sendData thread is not sending an addr message to this particular peer ('+self.HOST+') because their protocol version is 1.'
printLock.release()
else:
try:
#To prevent some network analysis, 'leak' the data out to our peer after waiting a random amount of time unless we have a long list of messages in our queue to send.
random.seed()
time.sleep(random.randrange(0, 10))
self.sock.sendall(data)
self.lastTimeISentData = int(time.time())
except:
print 'self.sock.sendall failed'
self.sock.close()
sendDataQueues.remove(self.mailbox)
print 'sendDataThread thread', self, 'ending now'
break
elif command == 'sendinv':
if data not in self.objectsOfWhichThisRemoteNodeIsAlreadyAware:
payload = '\x01' + data
headerData = '\xe9\xbe\xb4\xd9' #magic bits, slighly different from Bitcoin's magic bits.
headerData += 'inv\x00\x00\x00\x00\x00\x00\x00\x00\x00'
headerData += pack('>L',len(payload))
headerData += hashlib.sha512(payload).digest()[:4]
#To prevent some network analysis, 'leak' the data out to our peer after waiting a random amount of time
random.seed()
time.sleep(random.randrange(0, 10))
try:
self.sock.sendall(headerData + payload)
self.lastTimeISentData = int(time.time())
except:
print 'self.sock.sendall failed'
self.sock.close()
sendDataQueues.remove(self.mailbox)
print 'sendDataThread thread', self, 'ending now'
break
elif command == 'pong':
if self.lastTimeISentData < (int(time.time()) - 298):
#Send out a pong message to keep the connection alive.
printLock.acquire()
print 'Sending pong to', self.HOST, 'to keep connection alive.'
printLock.release()
try:
self.sock.sendall('\xE9\xBE\xB4\xD9\x70\x6F\x6E\x67\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xcf\x83\xe1\x35')
self.lastTimeISentData = int(time.time())
except:
print 'self.sock.send pong failed'
self.sock.close()
sendDataQueues.remove(self.mailbox)
print 'sendDataThread thread', self, 'ending now'
break
else:
printLock.acquire()
print 'sendDataThread ID:',id(self),'ignoring command', command,'because it is not in stream',deststream
printLock.release()
#Wen you want to command a sendDataThread to do something, like shutdown or send some data, this function puts your data into the queues for each of the sendDataThreads. The sendDataThreads are responsible for putting their queue into (and out of) the sendDataQueues list.
def broadcastToSendDataQueues(data):
#print 'running broadcastToSendDataQueues'
for q in sendDataQueues:
q.put((data))
def flushInventory():
#Note that the singleCleanerThread clears out the inventory dictionary from time to time, although it only clears things that have been in the dictionary for a long time. This clears the inventory dictionary Now.
sqlLock.acquire()
for hash, storedValue in inventory.items():
objectType, streamNumber, payload, receivedTime = storedValue
t = (hash,objectType,streamNumber,payload,receivedTime)
sqlSubmitQueue.put('''INSERT INTO inventory VALUES (?,?,?,?,?)''')
sqlSubmitQueue.put(t)
sqlReturnQueue.get()
del inventory[hash]
sqlSubmitQueue.put('commit')
sqlLock.release()
def isInSqlInventory(hash):
t = (hash,)
sqlLock.acquire()
sqlSubmitQueue.put('''select hash from inventory where hash=?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
if queryreturn == []:
return False
else:
return True
def convertIntToString(n):
a = __builtins__.hex(n)
if a[-1:] == 'L':
a = a[:-1]
if (len(a) % 2) == 0:
return a[2:].decode('hex')
else:
return ('0'+a[2:]).decode('hex')
def convertStringToInt(s):
return int(s.encode('hex'), 16)
def decodeWalletImportFormat(WIFstring):
fullString = arithmetic.changebase(WIFstring,58,256)
privkey = fullString[:-4]
if fullString[-4:] != hashlib.sha256(hashlib.sha256(privkey).digest()).digest()[:4]:
sys.stderr.write('Major problem! When trying to decode one of your private keys, the checksum failed. Here is the PRIVATE key: %s\n' % str(WIFstring))
return ""
else:
#checksum passed
if privkey[0] == '\x80':
return privkey[1:]
else:
sys.stderr.write('Major problem! When trying to decode one of your private keys, the checksum passed but the key doesn\'t begin with hex 80. Here is the PRIVATE key: %s\n' % str(WIFstring))
return ""
def reloadMyAddressHashes():
printLock.acquire()
print 'reloading keys from keys.dat file'
printLock.release()
myECCryptorObjects.clear()
myAddressesByHash.clear()
#myPrivateKeys.clear()
configSections = config.sections()
for addressInKeysFile in configSections:
if addressInKeysFile <> 'bitmessagesettings':
isEnabled = config.getboolean(addressInKeysFile, 'enabled')
if isEnabled:
status,addressVersionNumber,streamNumber,hash = decodeAddress(addressInKeysFile)
if addressVersionNumber == 2:
privEncryptionKey = decodeWalletImportFormat(config.get(addressInKeysFile, 'privencryptionkey')).encode('hex') #returns a simple 32 bytes of information encoded in 64 Hex characters, or null if there was an error
if len(privEncryptionKey) == 64:#It is 32 bytes encoded as 64 hex characters
myECCryptorObjects[hash] = highlevelcrypto.makeCryptor(privEncryptionKey)
myAddressesByHash[hash] = addressInKeysFile
else:
sys.stderr.write('Error in reloadMyAddressHashes: Can\'t handle address versions other than 2.\n')
#This function expects that pubkey begin with \x04
def calculateBitcoinAddressFromPubkey(pubkey):
if len(pubkey)!= 65:
print 'Could not calculate Bitcoin address from pubkey because function was passed a pubkey that was', len(pubkey),'bytes long rather than 65.'
return "error"
ripe = hashlib.new('ripemd160')
sha = hashlib.new('sha256')
sha.update(pubkey)
ripe.update(sha.digest())
ripeWithProdnetPrefix = '\x00' + ripe.digest()
checksum = hashlib.sha256(hashlib.sha256(ripeWithProdnetPrefix).digest()).digest()[:4]
binaryBitcoinAddress = ripeWithProdnetPrefix + checksum
numberOfZeroBytesOnBinaryBitcoinAddress = 0
while binaryBitcoinAddress[0] == '\x00':
numberOfZeroBytesOnBinaryBitcoinAddress += 1
binaryBitcoinAddress = binaryBitcoinAddress[1:]
base58encoded = arithmetic.changebase(binaryBitcoinAddress,256,58)
return "1"*numberOfZeroBytesOnBinaryBitcoinAddress + base58encoded
def calculateTestnetAddressFromPubkey(pubkey):
if len(pubkey)!= 65:
print 'Could not calculate Bitcoin address from pubkey because function was passed a pubkey that was', len(pubkey),'bytes long rather than 65.'
return "error"
ripe = hashlib.new('ripemd160')
sha = hashlib.new('sha256')
sha.update(pubkey)
ripe.update(sha.digest())
ripeWithProdnetPrefix = '\x6F' + ripe.digest()
checksum = hashlib.sha256(hashlib.sha256(ripeWithProdnetPrefix).digest()).digest()[:4]
binaryBitcoinAddress = ripeWithProdnetPrefix + checksum
numberOfZeroBytesOnBinaryBitcoinAddress = 0
while binaryBitcoinAddress[0] == '\x00':
numberOfZeroBytesOnBinaryBitcoinAddress += 1
binaryBitcoinAddress = binaryBitcoinAddress[1:]
base58encoded = arithmetic.changebase(binaryBitcoinAddress,256,58)
return "1"*numberOfZeroBytesOnBinaryBitcoinAddress + base58encoded
def safeConfigGetBoolean(section,field):
try:
return config.getboolean(section,field)
except:
return False
def lookupAppdataFolder():
APPNAME = "PyBitmessage"
from os import path, environ
if sys.platform == 'darwin':
if "HOME" in environ:
appdata = path.join(os.environ["HOME"], "Library/Application support/", APPNAME) + '/'
else:
print 'Could not find home folder, please report this message and your OS X version to the BitMessage Github.'
sys.exit()
elif 'win32' in sys.platform or 'win64' in sys.platform:
appdata = path.join(environ['APPDATA'], APPNAME) + '\\'
else:
appdata = path.expanduser(path.join("~", "." + APPNAME + "/"))
return appdata
def isAddressInMyAddressBook(address):
t = (address,)
sqlLock.acquire()
sqlSubmitQueue.put('''select address from addressbook where address=?''')
sqlSubmitQueue.put(t)
queryreturn = sqlReturnQueue.get()
sqlLock.release()
return queryreturn != []
def assembleVersionMessage(remoteHost,remotePort,myStreamNumber):
global softwareVersion
payload = ''
payload += pack('>L',2) #protocol version.