diff --git a/.gitignore b/.gitignore index acfa0ca1..8e9f9031 100644 --- a/.gitignore +++ b/.gitignore @@ -3,3 +3,6 @@ **.DS_Store src/build src/dist +src/.project +src/.pydevproject +src/.settings/ \ No newline at end of file diff --git a/src/bitmessagemain.py b/src/bitmessagemain.py index 0806afc9..63f1f8f1 100644 --- a/src/bitmessagemain.py +++ b/src/bitmessagemain.py @@ -8,2487 +8,25 @@ # yet contain logic to expand into further streams. # The software version variable is now held in shared.py -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 -useVeryEasyProofOfWorkForTesting = False # If you set this to True while on the normal network, you won't be able to send or sometimes receive messages. -encryptedBroadcastSwitchoverTime = 1369735200 -import sys -import Queue -from addresses import * -import shared -from defaultKnownNodes import * -import time -import socket -import threading -import hashlib -from struct import * -import pickle -import random -import sqlite3 -from time import strftime, localtime, gmtime -import string -import socks -import highlevelcrypto -from pyelliptic.openssl import OpenSSL #import ctypes import signal # Used to capture a Ctrl-C keypress so that Bitmessage can shutdown gracefully. # 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 import singleton -import proofofwork # Classes from class_sqlThread import * from class_singleCleaner import * +from class_singleWorker import * +from class_outgoingSynSender import * +from class_singleListener import * from class_addressGenerator import * # Helper Functions import helper_startup import helper_bootstrap -import helper_inbox -import helper_sent -import helper_generic -import helper_bitcoin - -# For each stream to which we connect, several outgoingSynSender threads -# will exist and will collectively create 8 connections with peers. - -class outgoingSynSender(threading.Thread): - - def __init__(self): - threading.Thread.__init__(self) - - def setup(self, streamNumber): - self.streamNumber = streamNumber - - def run(self): - time.sleep(1) - global alreadyAttemptedConnectionsListResetTime - while True: - while len(selfInitiatedConnections[self.streamNumber]) >= 8: # maximum number of outgoing connections = 8 - time.sleep(10) - if shared.shutdown: - break - random.seed() - shared.knownNodesLock.acquire() - HOST, = random.sample(shared.knownNodes[self.streamNumber], 1) - shared.knownNodesLock.release() - alreadyAttemptedConnectionsListLock.acquire() - while HOST in alreadyAttemptedConnectionsList or HOST in shared.connectedHostsList: - alreadyAttemptedConnectionsListLock.release() - # print 'choosing new sample' - random.seed() - shared.knownNodesLock.acquire() - HOST, = random.sample(shared.knownNodes[self.streamNumber], 1) - shared.knownNodesLock.release() - 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 = shared.knownNodes[ - self.streamNumber][HOST] - sock = socks.socksocket(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.settimeout(20) - if shared.config.get('bitmessagesettings', 'socksproxytype') == 'none' and verbose >= 2: - shared.printLock.acquire() - print 'Trying an outgoing connection to', HOST, ':', PORT - shared.printLock.release() - # sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) - elif shared.config.get('bitmessagesettings', 'socksproxytype') == 'SOCKS4a': - if verbose >= 2: - shared.printLock.acquire() - print '(Using SOCKS4a) Trying an outgoing connection to', HOST, ':', PORT - shared.printLock.release() - proxytype = socks.PROXY_TYPE_SOCKS4 - sockshostname = shared.config.get( - 'bitmessagesettings', 'sockshostname') - socksport = shared.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 shared.config.getboolean('bitmessagesettings', 'socksauthentication'): - socksusername = shared.config.get( - 'bitmessagesettings', 'socksusername') - sockspassword = shared.config.get( - 'bitmessagesettings', 'sockspassword') - sock.setproxy( - proxytype, sockshostname, socksport, rdns, socksusername, sockspassword) - else: - sock.setproxy( - proxytype, sockshostname, socksport, rdns) - elif shared.config.get('bitmessagesettings', 'socksproxytype') == 'SOCKS5': - if verbose >= 2: - shared.printLock.acquire() - print '(Using SOCKS5) Trying an outgoing connection to', HOST, ':', PORT - shared.printLock.release() - proxytype = socks.PROXY_TYPE_SOCKS5 - sockshostname = shared.config.get( - 'bitmessagesettings', 'sockshostname') - socksport = shared.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 shared.config.getboolean('bitmessagesettings', 'socksauthentication'): - socksusername = shared.config.get( - 'bitmessagesettings', 'socksusername') - sockspassword = shared.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() - rd.daemon = True # close the main program even if there are threads left - objectsOfWhichThisRemoteNodeIsAlreadyAware = {} - rd.setup(sock, HOST, PORT, self.streamNumber, - objectsOfWhichThisRemoteNodeIsAlreadyAware) - rd.start() - shared.printLock.acquire() - print self, 'connected to', HOST, 'during an outgoing attempt.' - shared.printLock.release() - - sd = sendDataThread() - sd.setup(sock, HOST, PORT, self.streamNumber, - objectsOfWhichThisRemoteNodeIsAlreadyAware) - sd.start() - sd.sendVersionMessage() - - except socks.GeneralProxyError as err: - if verbose >= 2: - shared.printLock.acquire() - print 'Could NOT connect to', HOST, 'during outgoing attempt.', err - shared.printLock.release() - PORT, timeLastSeen = shared.knownNodes[ - self.streamNumber][HOST] - if (int(time.time()) - timeLastSeen) > 172800 and len(shared.knownNodes[self.streamNumber]) > 1000: # for nodes older than 48 hours old if we have more than 1000 hosts in our list, delete from the shared.knownNodes data-structure. - shared.knownNodesLock.acquire() - del shared.knownNodes[self.streamNumber][HOST] - shared.knownNodesLock.release() - shared.printLock.acquire() - print 'deleting ', HOST, 'from shared.knownNodes because it is more than 48 hours old and we could not connect to it.' - shared.printLock.release() - except socks.Socks5AuthError as err: - shared.UISignalQueue.put(( - 'updateStatusBar', translateText( - "MainWindow", "SOCKS5 Authentication problem: %1").arg(str(err)))) - except socks.Socks5Error as err: - pass - print 'SOCKS5 error. (It is possible that the server wants authentication).)', str(err) - except socks.Socks4Error as err: - print 'Socks4Error:', err - except socket.error as err: - if shared.config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS': - print 'Bitmessage MIGHT be having trouble connecting to the SOCKS server. ' + str(err) - else: - if verbose >= 1: - shared.printLock.acquire() - print 'Could NOT connect to', HOST, 'during outgoing attempt.', err - shared.printLock.release() - PORT, timeLastSeen = shared.knownNodes[ - self.streamNumber][HOST] - if (int(time.time()) - timeLastSeen) > 172800 and len(shared.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. - shared.knownNodesLock.acquire() - del shared.knownNodes[self.streamNumber][HOST] - shared.knownNodesLock.release() - shared.printLock.acquire() - print 'deleting ', HOST, 'from knownNodes because it is more than 48 hours old and we could not connect to it.' - shared.printLock.release() - except Exception as 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(threading.Thread): - - def __init__(self): - threading.Thread.__init__(self) - - 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 shared.config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS': - time.sleep(300) - - shared.printLock.acquire() - print 'Listening for incoming connections.' - shared.printLock.release() - HOST = '' # Symbolic name meaning all available interfaces - PORT = shared.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 shared.config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS': - time.sleep(10) - while len(shared.connectedHostsList) > 220: - shared.printLock.acquire() - print 'We are connected to too many people. Not accepting further incoming connections for ten seconds.' - shared.printLock.release() - time.sleep(10) - a, (HOST, PORT) = sock.accept() - - # The following code will, unfortunately, block an incoming - # connection if someone else on the same LAN is already connected - # because the two computers will share the same external IP. This - # is here to prevent connection flooding. - while HOST in shared.connectedHostsList: - shared.printLock.acquire() - print 'We are already connected to', HOST + '. Ignoring connection.' - shared.printLock.release() - a.close() - a, (HOST, PORT) = sock.accept() - objectsOfWhichThisRemoteNodeIsAlreadyAware = {} - a.settimeout(20) - - sd = sendDataThread() - sd.setup( - a, HOST, PORT, -1, objectsOfWhichThisRemoteNodeIsAlreadyAware) - sd.start() - - rd = receiveDataThread() - rd.daemon = True # close the main program even if there are threads left - rd.setup( - a, HOST, PORT, -1, objectsOfWhichThisRemoteNodeIsAlreadyAware) - rd.start() - - shared.printLock.acquire() - print self, 'connected to', HOST, 'during INCOMING request.' - shared.printLock.release() - -# This thread is created either by the synSenderThread(for outgoing -# connections) or the singleListenerThread(for incoming connectiosn). - -class receiveDataThread(threading.Thread): - - def __init__(self): - threading.Thread.__init__(self) - 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.streamNumber = streamNumber - self.payloadLength = 0 # This is the protocol payload length thus it doesn't include the 24 byte message header - self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = {} - shared.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): - shared.printLock.acquire() - print 'ID of the receiveDataThread is', str(id(self)) + '. The size of the shared.connectedHostsList is now', len(shared.connectedHostsList) - shared.printLock.release() - while True: - try: - self.data += self.sock.recv(4096) - except socket.timeout: - shared.printLock.acquire() - print 'Timeout occurred waiting for data from', self.HOST + '. Closing receiveData thread. (ID:', str(id(self)) + ')' - shared.printLock.release() - break - except Exception as err: - shared.printLock.acquire() - print 'sock.recv error. Closing receiveData thread (HOST:', self.HOST, 'ID:', str(id(self)) + ').', err - shared.printLock.release() - break - # print 'Received', repr(self.data) - if self.data == "": - shared.printLock.acquire() - print 'Connection to', self.HOST, 'closed. Closing receiveData thread. (ID:', str(id(self)) + ')' - shared.printLock.release() - break - else: - self.processData() - - try: - del selfInitiatedConnections[self.streamNumber][self] - shared.printLock.acquire() - print 'removed self (a receiveDataThread) from selfInitiatedConnections' - shared.printLock.release() - except: - pass - shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) - try: - del shared.connectedHostsList[self.HOST] - except Exception as err: - shared.printLock.acquire() - print 'Could not delete', self.HOST, 'from shared.connectedHostsList.', err - shared.printLock.release() - try: - del numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ - self.HOST] - except: - pass - shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data')) - shared.printLock.acquire() - print 'The size of the connectedHostsList is now:', len(shared.connectedHostsList) - shared.printLock.release() - - def processData(self): - global verbose - # if verbose >= 3: - # shared.printLock.acquire() - # print 'self.data is currently ', repr(self.data) - # shared.printLock.release() - if len(self.data) < 20: # if so little of the data has arrived that we can't even unpack the payload length - return - if self.data[0:4] != '\xe9\xbe\xb4\xd9': - if verbose >= 1: - shared.printLock.acquire() - print 'The magic bytes were not correct. First 40 bytes of data: ' + repr(self.data[0:40]) - shared.printLock.release() - self.data = "" - return - self.payloadLength, = unpack('>L', self.data[16:20]) - if len(self.data) < self.payloadLength + 24: # check if the whole message has arrived yet. - return - 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 'Checksum incorrect. Clearing this message.' - self.data = self.data[self.payloadLength + 24:] - self.processData() - return - # 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 and self.connectionIsOrWasFullyEstablished: # 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). - shared.knownNodesLock.acquire() - shared.knownNodes[self.streamNumber][ - self.HOST] = (self.PORT, int(time.time())) - shared.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] - shared.printLock.acquire() - print 'remoteCommand', repr(remoteCommand.replace('\x00', '')), ' from', self.HOST - shared.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 == '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 == '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 shared.inventory: - shared.printLock.acquire() - print 'Inventory (in memory) already has object listed in inv message.' - shared.printLock.release() - del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[ - objectHash] - elif isInSqlInventory(objectHash): - if verbose >= 3: - shared.printLock.acquire() - print 'Inventory (SQL on disk) already has object listed in inv message.' - shared.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: - shared.printLock.acquire() - print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) - shared.printLock.release() - try: - del numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ - self.HOST] # this data structure is maintained so that we can keep track of how many total objects, across all connections, are currently outstanding. If it goes too high it can indicate that we are under attack by multiple nodes working together. - except: - pass - break - if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) == 0: - shared.printLock.acquire() - print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) - shared.printLock.release() - try: - del numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ - self.HOST] # this data structure is maintained so that we can keep track of how many total objects, across all connections, are currently outstanding. If it goes too high it can indicate that we are under attack by multiple nodes working together. - except: - pass - if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 0: - shared.printLock.acquire() - print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) - shared.printLock.release() - numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[self.HOST] = len( - self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) # this data structure is maintained so that we can keep track of how many total objects, across all connections, are currently outstanding. If it goes too high it can indicate that we are under attack by multiple nodes working together. - if len(self.ackDataThatWeHaveYetToSend) > 0: - self.data = self.ackDataThatWeHaveYetToSend.pop() - self.processData() - - def isProofOfWorkSufficient( - self, - data, - nonceTrialsPerByte=0, - payloadLengthExtraBytes=0): - if nonceTrialsPerByte < shared.networkDefaultProofOfWorkNonceTrialsPerByte: - nonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte - if payloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes: - payloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes - POW, = unpack('>Q', hashlib.sha512(hashlib.sha512(data[ - :8] + hashlib.sha512(data[8:]).digest()).digest()).digest()[0:8]) - # print 'POW:', POW - return POW <= 2 ** 64 / ((len(data) + payloadLengthExtraBytes) * (nonceTrialsPerByte)) - - def sendpong(self): - print 'Sending pong' - 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') - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - - def recverack(self): - print 'verack received' - self.verackReceived = True - if self.verackSent: - # We have thus both sent and received a verack. - self.connectionFullyEstablished() - - def connectionFullyEstablished(self): - self.connectionIsOrWasFullyEstablished = True - if not self.initiatedConnection: - shared.UISignalQueue.put(('setStatusIcon', 'green')) - 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. - shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data')) - remoteNodeIncomingPort, remoteNodeSeenTime = shared.knownNodes[ - self.streamNumber][self.HOST] - shared.printLock.acquire() - print 'Connection fully established with', self.HOST, remoteNodeIncomingPort - print 'The size of the connectedHostsList is now', len(shared.connectedHostsList) - print 'The length of sendDataQueues is now:', len(shared.sendDataQueues) - print 'broadcasting addr from within connectionFullyEstablished function.' - shared.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 len(shared.connectedHostsList) > 200: - shared.printLock.acquire() - print 'We are connected to too many people. Closing connection.' - shared.printLock.release() - shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) - return - self.sendBigInv() - - def sendBigInv(self): - shared.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) - shared.sqlSubmitQueue.put( - '''SELECT hash FROM inventory WHERE ((receivedtime>? and objecttype<>'pubkey') or (receivedtime>? and objecttype='pubkey')) and streamnumber=?''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - bigInvList = {} - for row in queryreturn: - hash, = row - if hash not in self.objectsOfWhichThisRemoteNodeIsAlreadyAware: - bigInvList[hash] = 0 - # We also have messages in our inventory in memory (which is a python - # dictionary). Let's fetch those too. - for hash, storedValue in shared.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 - 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] - shared.printLock.acquire() - print 'Sending huge inv message with', numberOfObjects, 'objects to just this one peer' - shared.printLock.release() - try: - self.sock.sendall(headerData + payload) - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - - # 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 - # Let us check to make sure the stream number is correct (thus - # preventing an individual from sending broadcasts out on the wrong - # streams or all streams). - broadcastVersion, broadcastVersionLength = decodeVarint( - data[readPosition:readPosition + 10]) - if broadcastVersion >= 2: - streamNumber, streamNumberLength = decodeVarint(data[ - readPosition + broadcastVersionLength:readPosition + broadcastVersionLength + 10]) - if streamNumber != self.streamNumber: - print 'The stream number encoded in this broadcast message (' + str(streamNumber) + ') does not match the stream number on which it was received. Ignoring it.' - return - - shared.inventoryLock.acquire() - self.inventoryHash = calculateInventoryHash(data) - if self.inventoryHash in shared.inventory: - print 'We have already received this broadcast object. Ignoring.' - shared.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.' - shared.inventoryLock.release() - return - # It is valid so far. Let's let our peers know about it. - objectType = 'broadcast' - shared.inventory[self.inventoryHash] = ( - objectType, self.streamNumber, data, embeddedTime) - shared.inventoryLock.release() - self.broadcastinv(self.inventoryHash) - shared.UISignalQueue.put(( - 'incrementNumberOfBroadcastsProcessed', 'no data')) - - 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 = .6 # seconds. - - sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - \ - (time.time() - self.messageProcessingStartTime) - if sleepTime > 0: - shared.printLock.acquire() - print 'Timing attack mitigation: Sleeping for', sleepTime, 'seconds.' - shared.printLock.release() - time.sleep(sleepTime) - shared.printLock.acquire() - print 'Total message processing time:', time.time() - self.messageProcessingStartTime, 'seconds.' - shared.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]) - readPosition += broadcastVersionLength - if broadcastVersion < 1 or broadcastVersion > 2: - print 'Cannot decode incoming broadcast versions higher than 2. Assuming the sender isn\'t being silly, you should upgrade Bitmessage because this message shall be ignored.' - return - if broadcastVersion == 1: - 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\'t 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]) - 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 shared.broadcastSendersForWhichImWatching: - # Display timing data - shared.printLock.acquire() - print 'Time spent deciding that we are not interested in this v1 broadcast:', time.time() - self.messageProcessingStartTime - shared.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: - if not highlevelcrypto.verify(data[12:readPositionAtBottomOfMessage], signature, sendersPubSigningKey.encode('hex')): - print 'ECDSA verify failed' - return - print 'ECDSA verify passed' - except Exception as 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(), '\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + data[ - beginningOfPubkeyPosition:endOfPubkeyPosition], int(time.time()), 'yes') - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - # shared.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. - self.possibleNewPubkey(ripe.digest()) - - fromAddress = encodeAddress( - sendersAddressVersion, sendersStream, ripe.digest()) - shared.printLock.acquire() - print 'fromAddress:', fromAddress - shared.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: - - t = (self.inventoryHash, toAddress, fromAddress, subject, int( - time.time()), body, 'inbox', messageEncodingType, 0) - helper_inbox.insert(t) - - shared.UISignalQueue.put(('displayNewInboxMessage', ( - 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 shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'): - try: - apiNotifyPath = shared.config.get( - 'bitmessagesettings', 'apinotifypath') - except: - apiNotifyPath = '' - if apiNotifyPath != '': - call([apiNotifyPath, "newBroadcast"]) - - # Display timing data - shared.printLock.acquire() - print 'Time spent processing this interesting broadcast:', time.time() - self.messageProcessingStartTime - shared.printLock.release() - if broadcastVersion == 2: - cleartextStreamNumber, cleartextStreamNumberLength = decodeVarint( - data[readPosition:readPosition + 10]) - readPosition += cleartextStreamNumberLength - initialDecryptionSuccessful = False - for key, cryptorObject in shared.MyECSubscriptionCryptorObjects.items(): - try: - decryptedData = cryptorObject.decrypt(data[readPosition:]) - toRipe = key # This is the RIPE hash of the sender's pubkey. We need this below to compare to the RIPE hash of the sender's address to verify that it was encrypted by with their key rather than some other key. - initialDecryptionSuccessful = True - print 'EC decryption successful using key associated with ripe hash:', key.encode('hex') - break - except Exception as err: - pass - # print 'cryptorObject.decrypt Exception:', err - if not initialDecryptionSuccessful: - # This is not a broadcast I am interested in. - shared.printLock.acquire() - print 'Length of time program spent failing to decrypt this v2 broadcast:', time.time() - self.messageProcessingStartTime, 'seconds.' - shared.printLock.release() - return - # At this point this is a broadcast I have decrypted and thus am - # interested in. - signedBroadcastVersion, readPosition = decodeVarint( - decryptedData[:10]) - beginningOfPubkeyPosition = readPosition # used when we add the pubkey to our pubkey table - sendersAddressVersion, sendersAddressVersionLength = decodeVarint( - decryptedData[readPosition:readPosition + 9]) - if sendersAddressVersion < 2 or sendersAddressVersion > 3: - print 'Cannot decode senderAddressVersion other than 2 or 3. Assuming the sender isn\'t being silly, you should upgrade Bitmessage because this message shall be ignored.' - return - readPosition += sendersAddressVersionLength - sendersStream, sendersStreamLength = decodeVarint( - decryptedData[readPosition:readPosition + 9]) - if sendersStream != cleartextStreamNumber: - print 'The stream number outside of the encryption on which the POW was completed doesn\'t match the stream number inside the encryption. Ignoring broadcast.' - return - readPosition += sendersStreamLength - behaviorBitfield = decryptedData[readPosition:readPosition + 4] - readPosition += 4 - sendersPubSigningKey = '\x04' + \ - decryptedData[readPosition:readPosition + 64] - readPosition += 64 - sendersPubEncryptionKey = '\x04' + \ - decryptedData[readPosition:readPosition + 64] - readPosition += 64 - if sendersAddressVersion >= 3: - requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += varintLength - print 'sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is', requiredAverageProofOfWorkNonceTrialsPerByte - requiredPayloadLengthExtraBytes, varintLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += varintLength - print 'sender\'s requiredPayloadLengthExtraBytes is', requiredPayloadLengthExtraBytes - endOfPubkeyPosition = readPosition - - sha = hashlib.new('sha512') - sha.update(sendersPubSigningKey + sendersPubEncryptionKey) - ripe = hashlib.new('ripemd160') - ripe.update(sha.digest()) - - if toRipe != ripe.digest(): - print 'The encryption key used to encrypt this message doesn\'t match the keys inbedded in the message itself. Ignoring message.' - return - messageEncodingType, messageEncodingTypeLength = decodeVarint( - decryptedData[readPosition:readPosition + 9]) - if messageEncodingType == 0: - return - readPosition += messageEncodingTypeLength - messageLength, messageLengthLength = decodeVarint( - decryptedData[readPosition:readPosition + 9]) - readPosition += messageLengthLength - message = decryptedData[readPosition:readPosition + messageLength] - readPosition += messageLength - readPositionAtBottomOfMessage = readPosition - signatureLength, signatureLengthLength = decodeVarint( - decryptedData[readPosition:readPosition + 9]) - readPosition += signatureLengthLength - signature = decryptedData[ - readPosition:readPosition + signatureLength] - try: - if not highlevelcrypto.verify(decryptedData[:readPositionAtBottomOfMessage], signature, sendersPubSigningKey.encode('hex')): - print 'ECDSA verify failed' - return - print 'ECDSA verify passed' - except Exception as err: - print 'ECDSA verify failed', err - return - # verify passed - - # Let's store the public key in case we want to reply to this - # person. - t = (ripe.digest(), '\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + decryptedData[ - beginningOfPubkeyPosition:endOfPubkeyPosition], int(time.time()), 'yes') - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - # shared.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. - self.possibleNewPubkey(ripe.digest()) - - fromAddress = encodeAddress( - sendersAddressVersion, sendersStream, ripe.digest()) - shared.printLock.acquire() - print 'fromAddress:', fromAddress - shared.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: - - t = (self.inventoryHash, toAddress, fromAddress, subject, int( - time.time()), body, 'inbox', messageEncodingType, 0) - helper_inbox.insert(t) - - shared.UISignalQueue.put(('displayNewInboxMessage', ( - 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 shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'): - try: - apiNotifyPath = shared.config.get( - 'bitmessagesettings', 'apinotifypath') - except: - apiNotifyPath = '' - if apiNotifyPath != '': - call([apiNotifyPath, "newBroadcast"]) - - # Display timing data - shared.printLock.acquire() - print 'Time spent processing this interesting broadcast:', time.time() - self.messageProcessingStartTime - shared.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) - shared.inventoryLock.acquire() - if self.inventoryHash in shared.inventory: - print 'We have already received this msg message. Ignoring.' - shared.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.' - shared.inventoryLock.release() - return - # This msg message is valid. Let's let our peers know about it. - objectType = 'msg' - shared.inventory[self.inventoryHash] = ( - objectType, self.streamNumber, data, embeddedTime) - shared.inventoryLock.release() - self.broadcastinv(self.inventoryHash) - shared.UISignalQueue.put(( - 'incrementNumberOfMessagesProcessed', 'no data')) - - 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: - shared.printLock.acquire() - print 'Timing attack mitigation: Sleeping for', sleepTime, 'seconds.' - shared.printLock.release() - time.sleep(sleepTime) - shared.printLock.acquire() - print 'Total message processing time:', time.time() - self.messageProcessingStartTime, 'seconds.' - shared.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: - shared.printLock.acquire() - print 'This msg IS an acknowledgement bound for me.' - shared.printLock.release() - del ackdataForWhichImWatching[encryptedData[readPosition:]] - t = ('ackreceived', encryptedData[readPosition:]) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - 'UPDATE sent SET status=? WHERE ackdata=?') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (encryptedData[readPosition:], translateText("MainWindow",'Acknowledgement of the message received. %1').arg(unicode( - strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) - return - else: - shared.printLock.acquire() - print 'This was NOT an acknowledgement bound for me.' - # print 'ackdataForWhichImWatching', ackdataForWhichImWatching - shared.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 shared.myECCryptorObjects.items(): - try: - decryptedData = 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 as err: - pass - # print 'cryptorObject.decrypt Exception:', err - if not initialDecryptionSuccessful: - # This is not a message bound for me. - shared.printLock.acquire() - print 'Length of time program spent failing to decrypt this message:', time.time() - self.messageProcessingStartTime, 'seconds.' - shared.printLock.release() - else: - # This is a message bound for me. - toAddress = shared.myAddressesByHash[ - toRipe] # Look up my address based on the RIPE hash. - readPosition = 0 - messageVersion, messageVersionLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += messageVersionLength - if messageVersion != 1: - print 'Cannot understand message versions other than one. Ignoring message.' - return - sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += sendersAddressVersionNumberLength - if sendersAddressVersionNumber == 0: - print 'Cannot understand sendersAddressVersionNumber = 0. Ignoring message.' - return - if sendersAddressVersionNumber >= 4: - print 'Sender\'s address version number', sendersAddressVersionNumber, 'not yet supported. Ignoring message.' - return - if len(decryptedData) < 170: - print 'Length of the unencrypted data is unreasonably short. Sanity check failed. Ignoring message.' - return - sendersStreamNumber, sendersStreamNumberLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - if sendersStreamNumber == 0: - print 'sender\'s stream number is 0. Ignoring message.' - return - readPosition += sendersStreamNumberLength - behaviorBitfield = decryptedData[readPosition:readPosition + 4] - readPosition += 4 - pubSigningKey = '\x04' + decryptedData[ - readPosition:readPosition + 64] - readPosition += 64 - pubEncryptionKey = '\x04' + decryptedData[ - readPosition:readPosition + 64] - readPosition += 64 - if sendersAddressVersionNumber >= 3: - requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += varintLength - print 'sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is', requiredAverageProofOfWorkNonceTrialsPerByte - requiredPayloadLengthExtraBytes, varintLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += varintLength - print 'sender\'s requiredPayloadLengthExtraBytes is', requiredPayloadLengthExtraBytes - endOfThePublicKeyPosition = readPosition # needed for when we store the pubkey in our database of pubkeys for later use. - if toRipe != decryptedData[readPosition:readPosition + 20]: - shared.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:', decryptedData[readPosition:readPosition + 20].encode('hex') - shared.printLock.release() - return - readPosition += 20 - messageEncodingType, messageEncodingTypeLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += messageEncodingTypeLength - messageLength, messageLengthLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += messageLengthLength - message = decryptedData[readPosition:readPosition + messageLength] - # print 'First 150 characters of message:', repr(message[:150]) - readPosition += messageLength - ackLength, ackLengthLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += ackLengthLength - ackData = decryptedData[readPosition:readPosition + ackLength] - readPosition += ackLength - positionOfBottomOfAckData = readPosition # needed to mark the end of what is covered by the signature - signatureLength, signatureLengthLength = decodeVarint( - decryptedData[readPosition:readPosition + 10]) - readPosition += signatureLengthLength - signature = decryptedData[ - readPosition:readPosition + signatureLength] - try: - if not highlevelcrypto.verify(decryptedData[:positionOfBottomOfAckData], signature, pubSigningKey.encode('hex')): - print 'ECDSA verify failed' - return - print 'ECDSA verify passed' - except Exception as err: - print 'ECDSA verify failed', err - return - shared.printLock.acquire() - print 'As a matter of intellectual curiosity, here is the Bitcoin address associated with the keys owned by the other person:', helper_bitcoin.calculateBitcoinAddressFromPubkey(pubSigningKey), ' ..and here is the testnet address:', helper_bitcoin.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.' - shared.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. - t = (ripe.digest(), '\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + decryptedData[ - messageVersionLength:endOfThePublicKeyPosition], int(time.time()), 'yes') - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - # shared.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. - self.possibleNewPubkey(ripe.digest()) - fromAddress = encodeAddress( - sendersAddressVersionNumber, sendersStreamNumber, ripe.digest()) - # If this message is bound for one of my version 3 addresses (or - # higher), then we must check to make sure it meets our demanded - # proof of work requirement. - if decodeAddress(toAddress)[1] >= 3: # If the toAddress version number is 3 or higher: - if not shared.isAddressInMyAddressBookSubscriptionsListOrWhitelist(fromAddress): # If I'm not friendly with this person: - requiredNonceTrialsPerByte = shared.config.getint( - toAddress, 'noncetrialsperbyte') - requiredPayloadLengthExtraBytes = shared.config.getint( - toAddress, 'payloadlengthextrabytes') - if not self.isProofOfWorkSufficient(encryptedData, requiredNonceTrialsPerByte, requiredPayloadLengthExtraBytes): - print 'Proof of work in msg message insufficient only because it does not meet our higher requirement.' - return - blockMessage = False # Gets set to True if the user shouldn't see the message according to black or white lists. - if shared.config.get('bitmessagesettings', 'blackwhitelist') == 'black': # If we are using a blacklist - t = (fromAddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT label FROM blacklist where address=? and enabled='1' ''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - if queryreturn != []: - shared.printLock.acquire() - print 'Message ignored because address is in blacklist.' - shared.printLock.release() - blockMessage = True - else: # We're using a whitelist - t = (fromAddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT label FROM whitelist where address=? and enabled='1' ''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - if queryreturn == []: - print 'Message ignored because address not in whitelist.' - blockMessage = True - if not blockMessage: - print 'fromAddress:', fromAddress - print 'First 150 characters of message:', repr(message[:150]) - - toLabel = shared.config.get(toAddress, 'label') - if toLabel == '': - toLabel = toAddress - - if messageEncodingType == 2: - bodyPositionIndex = string.find(message, '\nBody:') - if bodyPositionIndex > 1: - subject = message[8:bodyPositionIndex] - subject = subject[ - :500] # Only save and show the first 500 characters of the subject. Any more is probably an attak. - 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: - t = (self.inventoryHash, toAddress, fromAddress, subject, int( - time.time()), body, 'inbox', messageEncodingType, 0) - helper_inbox.insert(t) - - shared.UISignalQueue.put(('displayNewInboxMessage', ( - 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 shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'): - try: - apiNotifyPath = shared.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 shared.safeConfigGetBoolean(toAddress, 'mailinglist'): - try: - mailingListName = shared.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 = '' - - t = ('', toAddress, ripe, fromAddress, subject, message, ackdata, int( - time.time()), 'broadcastqueued', 1, 1, 'sent', 2) - helper_sent.insert(t) - - shared.UISignalQueue.put(('displayNewSentMessage', ( - toAddress, '[Broadcast subscribers]', fromAddress, subject, message, ackdata))) - shared.workerQueue.put(('sendbroadcast', '')) - - 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 - shared.printLock.acquire() - print 'Time to decrypt this message successfully:', timeRequiredToAttemptToDecryptMessage - print 'Average time for all message decryption successes since startup:', sum / len(successfullyDecryptMessageTimings) - shared.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 - - def possibleNewPubkey(self, toRipe): - if toRipe in neededPubkeys: - print 'We have been awaiting the arrival of this pubkey.' - del neededPubkeys[toRipe] - t = (toRipe,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='doingmsgpow' WHERE toripe=? AND status='awaitingpubkey' and folder='sent' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.workerQueue.put(('sendmessage', '')) - else: - shared.printLock.acquire() - print 'We don\'t need this pub key. We didn\'t ask for it. Pubkey hash:', toRipe.encode('hex') - shared.printLock.release() - - # 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: - shared.printLock.acquire() - print 'The embedded time in this pubkey message is too old. Ignoring. Embedded time is:', embeddedTime - shared.printLock.release() - return - if embeddedTime > int(time.time()) + 10800: - shared.printLock.acquire() - print 'The embedded time in this pubkey message more than several hours in the future. This is irrational. Ignoring message.' - shared.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) - shared.inventoryLock.acquire() - if inventoryHash in shared.inventory: - print 'We have already received this pubkey. Ignoring it.' - shared.inventoryLock.release() - return - elif isInSqlInventory(inventoryHash): - print 'We have already received this pubkey (it is stored on disk in the SQL inventory). Ignoring it.' - shared.inventoryLock.release() - return - objectType = 'pubkey' - shared.inventory[inventoryHash] = ( - objectType, self.streamNumber, data, embeddedTime) - shared.inventoryLock.release() - self.broadcastinv(inventoryHash) - shared.UISignalQueue.put(( - 'incrementNumberOfPubkeysProcessed', 'no data')) - - self.processpubkey(data) - - lengthOfTimeWeShouldUseToProcessThisMessage = .2 - sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - \ - (time.time() - self.pubkeyProcessingStartTime) - if sleepTime > 0: - shared.printLock.acquire() - print 'Timing attack mitigation: Sleeping for', sleepTime, 'seconds.' - shared.printLock.release() - time.sleep(sleepTime) - shared.printLock.acquire() - print 'Total pubkey processing time:', time.time() - self.pubkeyProcessingStartTime, 'seconds.' - shared.printLock.release() - - def processpubkey(self, data): - 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 - - 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 >= 4 or addressVersion == 1: - shared.printLock.acquire() - print 'This version of Bitmessage cannot handle version', addressVersion, 'addresses.' - shared.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() - - shared.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') - shared.printLock.release() - - t = (ripe,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT usedpersonally FROM pubkeys WHERE hash=? AND usedpersonally='yes' ''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.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, data, embeddedTime, 'yes') - else: - print 'We have NOT used this pubkey personally. Inserting in database.' - t = (ripe, data, embeddedTime, 'no') - # This will also update the embeddedTime. - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - # shared.workerQueue.put(('newpubkey',(addressVersion,streamNumber,ripe))) - self.possibleNewPubkey(ripe) - if addressVersion == 3: - if len(data) < 170: # sanity check. - print '(within processpubkey) payloadLength less than 170. Sanity check failed.' - return - bitfieldBehaviors = data[readPosition:readPosition + 4] - readPosition += 4 - publicSigningKey = '\x04' + 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 = '\x04' + data[readPosition:readPosition + 64] - readPosition += 64 - specifiedNonceTrialsPerByte, specifiedNonceTrialsPerByteLength = decodeVarint( - data[readPosition:readPosition + 10]) - readPosition += specifiedNonceTrialsPerByteLength - specifiedPayloadLengthExtraBytes, specifiedPayloadLengthExtraBytesLength = decodeVarint( - data[readPosition:readPosition + 10]) - readPosition += specifiedPayloadLengthExtraBytesLength - endOfSignedDataPosition = readPosition - signatureLength, signatureLengthLength = decodeVarint( - data[readPosition:readPosition + 10]) - readPosition += signatureLengthLength - signature = data[readPosition:readPosition + signatureLength] - try: - if not highlevelcrypto.verify(data[8:endOfSignedDataPosition], signature, publicSigningKey.encode('hex')): - print 'ECDSA verify failed (within processpubkey)' - return - print 'ECDSA verify passed (within processpubkey)' - except Exception as err: - print 'ECDSA verify failed (within processpubkey)', err - return - - sha = hashlib.new('sha512') - sha.update(publicSigningKey + publicEncryptionKey) - ripeHasher = hashlib.new('ripemd160') - ripeHasher.update(sha.digest()) - ripe = ripeHasher.digest() - - shared.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') - shared.printLock.release() - - t = (ripe,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT usedpersonally FROM pubkeys WHERE hash=? AND usedpersonally='yes' ''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.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, data, embeddedTime, 'yes') - else: - print 'We have NOT used this pubkey personally. Inserting in database.' - t = (ripe, data, embeddedTime, 'no') - # This will also update the embeddedTime. - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - # shared.workerQueue.put(('newpubkey',(addressVersion,streamNumber,ripe))) - self.possibleNewPubkey(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 - requestedAddressVersionNumber, 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) - shared.inventoryLock.acquire() - if inventoryHash in shared.inventory: - print 'We have already received this getpubkey request. Ignoring it.' - shared.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.' - shared.inventoryLock.release() - return - - objectType = 'getpubkey' - shared.inventory[inventoryHash] = ( - objectType, self.streamNumber, data, embeddedTime) - shared.inventoryLock.release() - # This getpubkey request is valid so far. Forward to peers. - self.broadcastinv(inventoryHash) - - if requestedAddressVersionNumber == 0: - print 'The requestedAddressVersionNumber of the pubkey request is zero. That doesn\'t make any sense. Ignoring it.' - return - elif requestedAddressVersionNumber == 1: - print 'The requestedAddressVersionNumber of the pubkey request is 1 which isn\'t supported anymore. Ignoring it.' - return - elif requestedAddressVersionNumber > 3: - print 'The requestedAddressVersionNumber 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') - - if requestedHash in shared.myAddressesByHash: # if this address hash is one of mine - if decodeAddress(shared.myAddressesByHash[requestedHash])[1] != requestedAddressVersionNumber: - shared.printLock.acquire() - sys.stderr.write( - '(Within the recgetpubkey function) Someone requested one of my pubkeys but the requestedAddressVersionNumber doesn\'t match my actual address version number. That shouldn\'t have happened. Ignoring.\n') - shared.printLock.release() - return - try: - lastPubkeySendTime = int(shared.config.get( - shared.myAddressesByHash[requestedHash], 'lastpubkeysendtime')) - except: - lastPubkeySendTime = 0 - if lastPubkeySendTime < time.time() - lengthOfTimeToHoldOnToAllPubkeys: # If the last time we sent our pubkey was 28 days ago - shared.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.' - shared.printLock.release() - if requestedAddressVersionNumber == 2: - shared.workerQueue.put(( - 'doPOWForMyV2Pubkey', requestedHash)) - elif requestedAddressVersionNumber == 3: - shared.workerQueue.put(( - 'doPOWForMyV3Pubkey', requestedHash)) - else: - shared.printLock.acquire() - print 'Found getpubkey-requested-hash in my list of EC hashes BUT we already sent it recently. Ignoring request. The lastPubkeySendTime is:', lastPubkeySendTime - shared.printLock.release() - else: - shared.printLock.acquire() - print 'This getpubkey request is not for any of my keys.' - shared.printLock.release() - - # We have received an inv message - def recinv(self, data): - totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = 0 # ..from all peers, counting duplicates seperately (because they take up memory) - if len(numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer) > 0: - for key, value in numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer.items(): - totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave += value - shared.printLock.acquire() - print 'number of keys(hosts) in numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer:', len(numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer) - print 'totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = ', totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave - shared.printLock.release() - numberOfItemsInInv, lengthOfVarint = decodeVarint(data[:10]) - if numberOfItemsInInv > 50000: - sys.stderr.write('Too many items in inv message!') - return - 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. - if totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave > 200000 and len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 1000: # inv flooding attack mitigation - shared.printLock.acquire() - print 'We already have', totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave, 'items yet to retrieve from peers and over 1000 from this node in particular. Ignoring this inv message.' - shared.printLock.release() - return - self.objectsOfWhichThisRemoteNodeIsAlreadyAware[ - data[lengthOfVarint:32 + lengthOfVarint]] = 0 - if data[lengthOfVarint:32 + lengthOfVarint] in shared.inventory: - shared.printLock.acquire() - print 'Inventory (in memory) has inventory item already.' - shared.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. - if totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave > 200000 and len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 1000: # inv flooding attack mitigation - shared.printLock.acquire() - print 'We already have', totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave, 'items yet to retrieve from peers and over', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave), 'from this node in particular. Ignoring the rest of this inv message.' - shared.printLock.release() - break - self.objectsOfWhichThisRemoteNodeIsAlreadyAware[data[ - lengthOfVarint + (32 * i):32 + lengthOfVarint + (32 * i)]] = 0 - self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[ - data[lengthOfVarint + (32 * i):32 + lengthOfVarint + (32 * i)]] = 0 - numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ - self.HOST] = len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) - - # Send a getdata message to our peer to request the object with the given - # hash - def sendgetdata(self, hash): - shared.printLock.acquire() - print 'sending getdata to retrieve object with hash:', hash.encode('hex') - shared.printLock.release() - 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 as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.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)] - shared.printLock.acquire() - print 'received getdata request for item:', hash.encode('hex') - shared.printLock.release() - # print 'inventory is', shared.inventory - if hash in shared.inventory: - objectType, streamNumber, payload, receivedTime = shared.inventory[ - hash] - self.sendData(objectType, payload) - else: - t = (hash,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''select objecttype, payload from inventory where hash=?''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.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): - headerData = '\xe9\xbe\xb4\xd9' # magic bits, slighly different from Bitcoin's magic bits. - if objectType == 'pubkey': - shared.printLock.acquire() - print 'sending pubkey' - shared.printLock.release() - headerData += 'pubkey\x00\x00\x00\x00\x00\x00' - elif objectType == 'getpubkey' or objectType == 'pubkeyrequest': - shared.printLock.acquire() - print 'sending getpubkey' - shared.printLock.release() - headerData += 'getpubkey\x00\x00\x00' - elif objectType == 'msg': - shared.printLock.acquire() - print 'sending msg' - shared.printLock.release() - headerData += 'msg\x00\x00\x00\x00\x00\x00\x00\x00\x00' - elif objectType == 'broadcast': - shared.printLock.acquire() - print 'sending broadcast' - shared.printLock.release() - headerData += 'broadcast\x00\x00\x00' - else: - sys.stderr.write( - 'Error: sendData has been asked to send a strange objectType: %s\n' % str(objectType)) - return - headerData += pack('>L', len(payload)) # payload length. - headerData += hashlib.sha512(payload).digest()[:4] - try: - self.sock.sendall(headerData + payload) - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - - # Send an inv message with just one hash to all of our peers - def broadcastinv(self, hash): - shared.printLock.acquire() - print 'broadcasting inv with hash:', hash.encode('hex') - shared.printLock.release() - shared.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: - shared.printLock.acquire() - print 'addr message contains', numberOfAddressesIncluded, 'IP addresses.' - shared.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': - shared.printLock.acquire() - print 'Skipping IPv6 address.', repr(data[16 + lengthOfNumberOfAddresses + (34 * i):28 + lengthOfNumberOfAddresses + (34 * i)]) - shared.printLock.release() - continue - except Exception as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err)) - shared.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 as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err)) - shared.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 as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err)) - shared.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 as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err)) - shared.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 helper_generic.isHostInPrivateIPRange(hostFromAddrMessage): - 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 shared.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. - shared.knownNodesLock.acquire() - shared.knownNodes[recaddrStream] = {} - shared.knownNodesLock.release() - if hostFromAddrMessage not in shared.knownNodes[recaddrStream]: - if len(shared.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. - shared.knownNodesLock.acquire() - shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( - recaddrPort, timeSomeoneElseReceivedMessageFromThisNode) - shared.knownNodesLock.release() - needToWriteKnownNodesToDisk = True - hostDetails = ( - timeSomeoneElseReceivedMessageFromThisNode, - recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) - listOfAddressDetailsToBroadcastToPeers.append( - hostDetails) - else: - PORT, timeLastReceivedMessageFromThisNode = shared.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())): - shared.knownNodesLock.acquire() - shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( - PORT, timeSomeoneElseReceivedMessageFromThisNode) - shared.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. - shared.knownNodesLock.acquire() - output = open(shared.appdata + 'knownnodes.dat', 'wb') - pickle.dump(shared.knownNodes, output) - output.close() - shared.knownNodesLock.release() - self.broadcastaddr( - listOfAddressDetailsToBroadcastToPeers) # no longer broadcast - shared.printLock.acquire() - print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.' - shared.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': - shared.printLock.acquire() - print 'Skipping IPv6 address.', repr(data[20 + lengthOfNumberOfAddresses + (38 * i):32 + lengthOfNumberOfAddresses + (38 * i)]) - shared.printLock.release() - continue - except Exception as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err)) - shared.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 as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err)) - shared.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 as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err)) - shared.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 as err: - shared.printLock.acquire() - sys.stderr.write( - 'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err)) - shared.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 shared.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. - shared.knownNodesLock.acquire() - shared.knownNodes[recaddrStream] = {} - shared.knownNodesLock.release() - if hostFromAddrMessage not in shared.knownNodes[recaddrStream]: - if len(shared.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. - shared.knownNodesLock.acquire() - shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( - recaddrPort, timeSomeoneElseReceivedMessageFromThisNode) - shared.knownNodesLock.release() - shared.printLock.acquire() - print 'added new node', hostFromAddrMessage, 'to knownNodes in stream', recaddrStream - shared.printLock.release() - needToWriteKnownNodesToDisk = True - hostDetails = ( - timeSomeoneElseReceivedMessageFromThisNode, - recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) - listOfAddressDetailsToBroadcastToPeers.append( - hostDetails) - else: - PORT, timeLastReceivedMessageFromThisNode = shared.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())): - shared.knownNodesLock.acquire() - shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( - PORT, timeSomeoneElseReceivedMessageFromThisNode) - shared.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. - shared.knownNodesLock.acquire() - output = open(shared.appdata + 'knownnodes.dat', 'wb') - pickle.dump(shared.knownNodes, output) - output.close() - shared.knownNodesLock.release() - self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers) - shared.printLock.acquire() - print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.' - shared.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: - shared.printLock.acquire() - print 'Broadcasting addr with', numberOfAddressesInAddrMessage, 'entries.' - shared.printLock.release() - shared.broadcastToSendDataQueues(( - self.streamNumber, 'sendaddr', datatosend)) - - # Send a big addr message to our peer - def sendaddr(self): - addrsInMyStream = {} - addrsInChildStreamLeft = {} - addrsInChildStreamRight = {} - # print 'knownNodes', shared.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. - shared.knownNodesLock.acquire() - if len(shared.knownNodes[self.streamNumber]) > 0: - for i in range(500): - random.seed() - HOST, = random.sample(shared.knownNodes[self.streamNumber], 1) - if helper_generic.isHostInPrivateIPRange(HOST): - continue - addrsInMyStream[HOST] = shared.knownNodes[ - self.streamNumber][HOST] - if len(shared.knownNodes[self.streamNumber * 2]) > 0: - for i in range(250): - random.seed() - HOST, = random.sample(shared.knownNodes[ - self.streamNumber * 2], 1) - if helper_generic.isHostInPrivateIPRange(HOST): - continue - addrsInChildStreamLeft[HOST] = shared.knownNodes[ - self.streamNumber * 2][HOST] - if len(shared.knownNodes[(self.streamNumber * 2) + 1]) > 0: - for i in range(250): - random.seed() - HOST, = random.sample(shared.knownNodes[ - (self.streamNumber * 2) + 1], 1) - if helper_generic.isHostInPrivateIPRange(HOST): - continue - addrsInChildStreamRight[HOST] = shared.knownNodes[ - (self.streamNumber * 2) + 1][HOST] - shared.knownNodesLock.release() - 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 - 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 - 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 - 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 - try: - self.sock.sendall(datatosend) - if verbose >= 1: - shared.printLock.acquire() - print 'Sending addr with', numberOfAddressesInAddrMessage, 'entries.' - shared.printLock.release() - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - - # 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]) - if self.remoteProtocolVersion <= 1: - shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) - shared.printLock.acquire() - print 'Closing connection to old protocol version 1 node: ', self.HOST - shared.printLock.release() - return - # 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:]) - shared.printLock.acquire() - print 'Remote node useragent:', useragent, ' stream number:', self.streamNumber - shared.printLock.release() - if self.streamNumber != 1: - shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) - shared.printLock.acquire() - print 'Closed connection to', self.HOST, 'because they are interested in stream', self.streamNumber, '.' - shared.printLock.release() - return - shared.connectedHostsList[ - self.HOST] = 1 # We use this data structure to not only keep track of what hosts we are connected to so that we don't try to connect to them again, but also to list the connections count on the Network Status tab. - # If this was an incoming connection, then the sendData thread - # doesn't know the stream. We have to set it. - if not self.initiatedConnection: - shared.broadcastToSendDataQueues(( - 0, 'setStreamNumber', (self.HOST, self.streamNumber))) - if data[72:80] == eightBytesOfRandomDataUsedToDetectConnectionsToSelf: - shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) - shared.printLock.acquire() - print 'Closing connection to myself: ', self.HOST - shared.printLock.release() - return - shared.broadcastToSendDataQueues((0, 'setRemoteProtocolVersion', ( - self.HOST, self.remoteProtocolVersion))) - - shared.knownNodesLock.acquire() - shared.knownNodes[self.streamNumber][self.HOST] = ( - self.remoteNodeIncomingPort, int(time.time())) - output = open(shared.appdata + 'knownnodes.dat', 'wb') - pickle.dump(shared.knownNodes, output) - output.close() - shared.knownNodesLock.release() - - self.sendverack() - if self.initiatedConnection == False: - self.sendversion() - - # Sends a version message - def sendversion(self): - shared.printLock.acquire() - print 'Sending version message' - shared.printLock.release() - try: - self.sock.sendall(assembleVersionMessage( - self.HOST, self.PORT, self.streamNumber)) - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - - # Sends a verack message - def sendverack(self): - shared.printLock.acquire() - print 'Sending verack' - shared.printLock.release() - try: - 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') - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - # cf - # 83 - # e1 - # 35 - self.verackSent = True - if self.verackReceived: - self.connectionFullyEstablished() - - -# Every connection to a peer has a sendDataThread (and also a -# receiveDataThread). -class sendDataThread(threading.Thread): - - def __init__(self): - threading.Thread.__init__(self) - self.mailbox = Queue.Queue() - shared.sendDataQueues.append(self.mailbox) - shared.printLock.acquire() - print 'The length of sendDataQueues at sendDataThread init is:', len(shared.sendDataQueues) - shared.printLock.release() - self.data = '' - - def setup( - self, - sock, - HOST, - PORT, - streamNumber, - objectsOfWhichThisRemoteNodeIsAlreadyAware): - self.sock = sock - self.HOST = HOST - self.PORT = PORT - self.streamNumber = streamNumber - self.remoteProtocolVersion = - \ - 1 # This must be set using setRemoteProtocolVersion command which is sent through the self.mailbox queue. - 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 - shared.printLock.acquire() - print 'The streamNumber of this sendDataThread (ID:', str(id(self)) + ') at setup() is', self.streamNumber - shared.printLock.release() - - def sendVersionMessage(self): - datatosend = assembleVersionMessage( - self.HOST, self.PORT, self.streamNumber) # the IP and port of the remote host, and my streamNumber. - - shared.printLock.acquire() - print 'Sending version packet: ', repr(datatosend) - shared.printLock.release() - try: - self.sock.sendall(datatosend) - except Exception as err: - # if not 'Bad file descriptor' in err: - shared.printLock.acquire() - sys.stderr.write('sock.sendall error: %s\n' % err) - shared.printLock.release() - self.versionSent = 1 - - def run(self): - while True: - deststream, command, data = self.mailbox.get() - # shared.printLock.acquire() - # print 'sendDataThread, destream:', deststream, ', Command:', command, ', ID:',id(self), ', HOST:', self.HOST - # shared.printLock.release() - - if deststream == self.streamNumber or deststream == 0: - if command == 'shutdown': - if data == self.HOST or data == 'all': - shared.printLock.acquire() - print 'sendDataThread (associated with', self.HOST, ') ID:', id(self), 'shutting down now.' - shared.printLock.release() - try: - self.sock.shutdown(socket.SHUT_RDWR) - self.sock.close() - except: - pass - shared.sendDataQueues.remove(self.mailbox) - shared.printLock.acquire() - print 'len of sendDataQueues', len(shared.sendDataQueues) - shared.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: - shared.printLock.acquire() - print 'setting the stream number in the sendData thread (ID:', id(self), ') to', specifiedStreamNumber - shared.printLock.release() - self.streamNumber = specifiedStreamNumber - elif command == 'setRemoteProtocolVersion': - hostInMessage, specifiedRemoteProtocolVersion = data - if hostInMessage == self.HOST: - shared.printLock.acquire() - print 'setting the remote node\'s protocol version in the sendData thread (ID:', id(self), ') to', specifiedRemoteProtocolVersion - shared.printLock.release() - self.remoteProtocolVersion = specifiedRemoteProtocolVersion - elif command == 'sendaddr': - 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' - try: - self.sock.shutdown(socket.SHUT_RDWR) - self.sock.close() - except: - pass - shared.sendDataQueues.remove(self.mailbox) - print 'sendDataThread thread (ID:', str(id(self)) + ') ending now. Was connected to', self.HOST - 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' - try: - self.sock.shutdown(socket.SHUT_RDWR) - self.sock.close() - except: - pass - shared.sendDataQueues.remove(self.mailbox) - print 'sendDataThread thread (ID:', str(id(self)) + ') ending now. Was connected to', self.HOST - break - elif command == 'pong': - if self.lastTimeISentData < (int(time.time()) - 298): - # Send out a pong message to keep the connection alive. - shared.printLock.acquire() - print 'Sending pong to', self.HOST, 'to keep connection alive.' - shared.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 'send pong failed' - try: - self.sock.shutdown(socket.SHUT_RDWR) - self.sock.close() - except: - pass - shared.sendDataQueues.remove(self.mailbox) - print 'sendDataThread thread', self, 'ending now. Was connected to', self.HOST - break - else: - shared.printLock.acquire() - print 'sendDataThread ID:', id(self), 'ignoring command', command, 'because the thread is not in stream', deststream - shared.printLock.release() - - -def isInSqlInventory(hash): - t = (hash,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put('''select hash from inventory where hash=?''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - if queryreturn == []: - return False - else: - return True - def connectToStream(streamNumber): selfInitiatedConnections[streamNumber] = {} @@ -2498,898 +36,10 @@ def connectToStream(streamNumber): maximumNumberOfHalfOpenConnections = 32 for i in range(maximumNumberOfHalfOpenConnections): a = outgoingSynSender() - a.setup(streamNumber) + a.setup(streamNumber, selfInitiatedConnections) a.start() - -def assembleVersionMessage(remoteHost, remotePort, myStreamNumber): - shared.softwareVersion - payload = '' - payload += pack('>L', 2) # protocol version. - payload += pack('>q', 1) # bitflags of the services I offer. - payload += pack('>q', int(time.time())) - - payload += pack( - '>q', 1) # boolservices of remote connection. How can I even know this for sure? This is probably ignored by the remote host. - payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + \ - socket.inet_aton(remoteHost) - payload += pack('>H', remotePort) # remote IPv6 and port - - payload += pack('>q', 1) # bitflags of the services I offer. - payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + pack( - '>L', 2130706433) # = 127.0.0.1. This will be ignored by the remote host. The actual remote connected IP will be used. - payload += pack('>H', shared.config.getint( - 'bitmessagesettings', 'port')) # my external IPv6 and port - - random.seed() - payload += eightBytesOfRandomDataUsedToDetectConnectionsToSelf - userAgent = '/PyBitmessage:' + shared.softwareVersion + \ - '/' # Length of userAgent must be less than 253. - payload += pack('>B', len( - userAgent)) # user agent string length. If the user agent is more than 252 bytes long, this code isn't going to work. - payload += userAgent - payload += encodeVarint( - 1) # The number of streams about which I care. PyBitmessage currently only supports 1 per connection. - payload += encodeVarint(myStreamNumber) - - datatosend = '\xe9\xbe\xb4\xd9' # magic bits, slighly different from Bitcoin's magic bits. - datatosend = datatosend + 'version\x00\x00\x00\x00\x00' # version command - datatosend = datatosend + pack('>L', len(payload)) # payload length - datatosend = datatosend + hashlib.sha512(payload).digest()[0:4] - return datatosend + payload - -# This thread, of which there is only one, does the heavy lifting: -# calculating POWs. - - -class singleWorker(threading.Thread): - - def __init__(self): - # QThread.__init__(self, parent) - threading.Thread.__init__(self) - - def run(self): - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT toripe FROM sent WHERE ((status='awaitingpubkey' OR status='doingpubkeypow') AND folder='sent')''') - shared.sqlSubmitQueue.put('') - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - for row in queryreturn: - toripe, = row - neededPubkeys[toripe] = 0 - - # Initialize the ackdataForWhichImWatching data structure using data - # from the sql database. - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT ackdata FROM sent where (status='msgsent' OR status='doingmsgpow')''') - shared.sqlSubmitQueue.put('') - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - for row in queryreturn: - ackdata, = row - print 'Watching for ackdata', ackdata.encode('hex') - ackdataForWhichImWatching[ackdata] = 0 - - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT DISTINCT toaddress FROM sent WHERE (status='doingpubkeypow' AND folder='sent')''') - shared.sqlSubmitQueue.put('') - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - for row in queryreturn: - toaddress, = row - self.requestPubKey(toaddress) - - time.sleep( - 10) # give some time for the GUI to start before we start on existing POW tasks. - - self.sendMsg() - # just in case there are any pending tasks for msg - # messages that have yet to be sent. - self.sendBroadcast() - # just in case there are any tasks for Broadcasts - # that have yet to be sent. - - while True: - command, data = shared.workerQueue.get() - if command == 'sendmessage': - self.sendMsg() - elif command == 'sendbroadcast': - self.sendBroadcast() - elif command == 'doPOWForMyV2Pubkey': - self.doPOWForMyV2Pubkey(data) - elif command == 'doPOWForMyV3Pubkey': - self.doPOWForMyV3Pubkey(data) - """elif command == 'newpubkey': - toAddressVersion,toStreamNumber,toRipe = data - if toRipe in neededPubkeys: - print 'We have been awaiting the arrival of this pubkey.' - del neededPubkeys[toRipe] - t = (toRipe,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put('''UPDATE sent SET status='doingmsgpow' WHERE toripe=? AND status='awaitingpubkey' and folder='sent' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - self.sendMsg() - else: - shared.printLock.acquire() - print 'We don\'t need this pub key. We didn\'t ask for it. Pubkey hash:', toRipe.encode('hex') - shared.printLock.release()""" - else: - shared.printLock.acquire() - sys.stderr.write( - 'Probable programming error: The command sent to the workerThread is weird. It is: %s\n' % command) - shared.printLock.release() - shared.workerQueue.task_done() - - def doPOWForMyV2Pubkey(self, hash): # This function also broadcasts out the pubkey message once it is done with the POW - # Look up my stream number based on my address hash - """configSections = shared.config.sections() - for addressInKeysFile in configSections: - if addressInKeysFile <> 'bitmessagesettings': - status,addressVersionNumber,streamNumber,hashFromThisParticularAddress = decodeAddress(addressInKeysFile) - if hash == hashFromThisParticularAddress: - myAddress = addressInKeysFile - break""" - myAddress = shared.myAddressesByHash[hash] - status, addressVersionNumber, streamNumber, hash = decodeAddress( - myAddress) - embeddedTime = int(time.time() + random.randrange( - -300, 300)) # the current time plus or minus five minutes - payload = pack('>I', (embeddedTime)) - payload += encodeVarint(addressVersionNumber) # Address version number - payload += encodeVarint(streamNumber) - payload += '\x00\x00\x00\x01' # bitfield of features supported by me (see the wiki). - - try: - privSigningKeyBase58 = shared.config.get( - myAddress, 'privsigningkey') - privEncryptionKeyBase58 = shared.config.get( - myAddress, 'privencryptionkey') - except Exception as err: - shared.printLock.acquire() - sys.stderr.write( - 'Error within doPOWForMyV2Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err) - shared.printLock.release() - return - - privSigningKeyHex = shared.decodeWalletImportFormat( - privSigningKeyBase58).encode('hex') - privEncryptionKeyHex = shared.decodeWalletImportFormat( - privEncryptionKeyBase58).encode('hex') - pubSigningKey = highlevelcrypto.privToPub( - privSigningKeyHex).decode('hex') - pubEncryptionKey = highlevelcrypto.privToPub( - privEncryptionKeyHex).decode('hex') - - payload += pubSigningKey[1:] - payload += pubEncryptionKey[1:] - - # Do the POW for this pubkey message - target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + - 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) - print '(For pubkey message) Doing proof of work...' - initialHash = hashlib.sha512(payload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - print '(For pubkey message) Found proof of work', trialValue, 'Nonce:', nonce - payload = pack('>Q', nonce) + payload - """t = (hash,payload,embeddedTime,'no') - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release()""" - - inventoryHash = calculateInventoryHash(payload) - objectType = 'pubkey' - shared.inventory[inventoryHash] = ( - objectType, streamNumber, payload, embeddedTime) - - shared.printLock.acquire() - print 'broadcasting inv with hash:', inventoryHash.encode('hex') - shared.printLock.release() - shared.broadcastToSendDataQueues(( - streamNumber, 'sendinv', inventoryHash)) - shared.UISignalQueue.put(('updateStatusBar', '')) - shared.config.set( - myAddress, 'lastpubkeysendtime', str(int(time.time()))) - with open(shared.appdata + 'keys.dat', 'wb') as configfile: - shared.config.write(configfile) - - def doPOWForMyV3Pubkey(self, hash): # This function also broadcasts out the pubkey message once it is done with the POW - myAddress = shared.myAddressesByHash[hash] - status, addressVersionNumber, streamNumber, hash = decodeAddress( - myAddress) - embeddedTime = int(time.time() + random.randrange( - -300, 300)) # the current time plus or minus five minutes - payload = pack('>I', (embeddedTime)) - payload += encodeVarint(addressVersionNumber) # Address version number - payload += encodeVarint(streamNumber) - payload += '\x00\x00\x00\x01' # bitfield of features supported by me (see the wiki). - - try: - privSigningKeyBase58 = shared.config.get( - myAddress, 'privsigningkey') - privEncryptionKeyBase58 = shared.config.get( - myAddress, 'privencryptionkey') - except Exception as err: - shared.printLock.acquire() - sys.stderr.write( - 'Error within doPOWForMyV3Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err) - shared.printLock.release() - return - - privSigningKeyHex = shared.decodeWalletImportFormat( - privSigningKeyBase58).encode('hex') - privEncryptionKeyHex = shared.decodeWalletImportFormat( - privEncryptionKeyBase58).encode('hex') - pubSigningKey = highlevelcrypto.privToPub( - privSigningKeyHex).decode('hex') - pubEncryptionKey = highlevelcrypto.privToPub( - privEncryptionKeyHex).decode('hex') - - payload += pubSigningKey[1:] - payload += pubEncryptionKey[1:] - - payload += encodeVarint(shared.config.getint( - myAddress, 'noncetrialsperbyte')) - payload += encodeVarint(shared.config.getint( - myAddress, 'payloadlengthextrabytes')) - signature = highlevelcrypto.sign(payload, privSigningKeyHex) - payload += encodeVarint(len(signature)) - payload += signature - - # Do the POW for this pubkey message - target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + - 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) - print '(For pubkey message) Doing proof of work...' - initialHash = hashlib.sha512(payload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - print '(For pubkey message) Found proof of work', trialValue, 'Nonce:', nonce - - payload = pack('>Q', nonce) + payload - """t = (hash,payload,embeddedTime,'no') - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?)''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release()""" - - inventoryHash = calculateInventoryHash(payload) - objectType = 'pubkey' - shared.inventory[inventoryHash] = ( - objectType, streamNumber, payload, embeddedTime) - - shared.printLock.acquire() - print 'broadcasting inv with hash:', inventoryHash.encode('hex') - shared.printLock.release() - shared.broadcastToSendDataQueues(( - streamNumber, 'sendinv', inventoryHash)) - shared.UISignalQueue.put(('updateStatusBar', '')) - shared.config.set( - myAddress, 'lastpubkeysendtime', str(int(time.time()))) - with open(shared.appdata + 'keys.dat', 'wb') as configfile: - shared.config.write(configfile) - - def sendBroadcast(self): - shared.sqlLock.acquire() - t = ('broadcastqueued',) - shared.sqlSubmitQueue.put( - '''SELECT fromaddress, subject, message, ackdata FROM sent WHERE status=? and folder='sent' ''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - for row in queryreturn: - fromaddress, subject, body, ackdata = row - status, addressVersionNumber, streamNumber, ripe = decodeAddress( - fromaddress) - if addressVersionNumber == 2 and int(time.time()) < encryptedBroadcastSwitchoverTime: - # We need to convert our private keys to public keys in order - # to include them. - try: - privSigningKeyBase58 = shared.config.get( - fromaddress, 'privsigningkey') - privEncryptionKeyBase58 = shared.config.get( - fromaddress, 'privencryptionkey') - except: - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) - continue - - privSigningKeyHex = shared.decodeWalletImportFormat( - privSigningKeyBase58).encode('hex') - privEncryptionKeyHex = shared.decodeWalletImportFormat( - privEncryptionKeyBase58).encode('hex') - - pubSigningKey = highlevelcrypto.privToPub(privSigningKeyHex).decode( - 'hex') # At this time these pubkeys are 65 bytes long because they include the encoding byte which we won't be sending in the broadcast message. - pubEncryptionKey = highlevelcrypto.privToPub( - privEncryptionKeyHex).decode('hex') - - payload = pack('>Q', (int(time.time()) + random.randrange( - -300, 300))) # the current time plus or minus five minutes - payload += encodeVarint(1) # broadcast version - payload += encodeVarint(addressVersionNumber) - payload += encodeVarint(streamNumber) - payload += '\x00\x00\x00\x01' # behavior bitfield - payload += pubSigningKey[1:] - payload += pubEncryptionKey[1:] - payload += ripe - payload += '\x02' # message encoding type - payload += encodeVarint(len( - 'Subject:' + subject + '\n' + 'Body:' + body)) # Type 2 is simple UTF-8 message encoding. - payload += 'Subject:' + subject + '\n' + 'Body:' + body - - signature = highlevelcrypto.sign(payload, privSigningKeyHex) - payload += encodeVarint(len(signature)) - payload += signature - - target = 2 ** 64 / ((len( - payload) + shared.networkDefaultPayloadLengthExtraBytes + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) - print '(For broadcast message) Doing proof of work...' - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Doing work necessary to send broadcast...")))) - initialHash = hashlib.sha512(payload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - print '(For broadcast message) Found proof of work', trialValue, 'Nonce:', nonce - - payload = pack('>Q', nonce) + payload - - inventoryHash = calculateInventoryHash(payload) - objectType = 'broadcast' - shared.inventory[inventoryHash] = ( - objectType, streamNumber, payload, int(time.time())) - print 'Broadcasting inv for my broadcast (within sendBroadcast function):', inventoryHash.encode('hex') - shared.broadcastToSendDataQueues(( - streamNumber, 'sendinv', inventoryHash)) - - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, translateText("MainWindow", "Broadcast sent on %1").arg(unicode( - strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) - - # Update the status of the message in the 'sent' table to have - # a 'broadcastsent' status - shared.sqlLock.acquire() - t = ('broadcastsent', int( - time.time()), fromaddress, subject, body, 'broadcastqueued') - shared.sqlSubmitQueue.put( - 'UPDATE sent SET status=?, lastactiontime=? WHERE fromaddress=? AND subject=? AND message=? AND status=?') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - elif addressVersionNumber == 3 or int(time.time()) > encryptedBroadcastSwitchoverTime: - # We need to convert our private keys to public keys in order - # to include them. - try: - privSigningKeyBase58 = shared.config.get( - fromaddress, 'privsigningkey') - privEncryptionKeyBase58 = shared.config.get( - fromaddress, 'privencryptionkey') - except: - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) - continue - - privSigningKeyHex = shared.decodeWalletImportFormat( - privSigningKeyBase58).encode('hex') - privEncryptionKeyHex = shared.decodeWalletImportFormat( - privEncryptionKeyBase58).encode('hex') - - pubSigningKey = highlevelcrypto.privToPub(privSigningKeyHex).decode( - 'hex') # At this time these pubkeys are 65 bytes long because they include the encoding byte which we won't be sending in the broadcast message. - pubEncryptionKey = highlevelcrypto.privToPub( - privEncryptionKeyHex).decode('hex') - - payload = pack('>Q', (int(time.time()) + random.randrange( - -300, 300))) # the current time plus or minus five minutes - payload += encodeVarint(2) # broadcast version - payload += encodeVarint(streamNumber) - - dataToEncrypt = encodeVarint(2) # broadcast version - dataToEncrypt += encodeVarint(addressVersionNumber) - dataToEncrypt += encodeVarint(streamNumber) - dataToEncrypt += '\x00\x00\x00\x01' # behavior bitfield - dataToEncrypt += pubSigningKey[1:] - dataToEncrypt += pubEncryptionKey[1:] - if addressVersionNumber >= 3: - dataToEncrypt += encodeVarint(shared.config.getint(fromaddress,'noncetrialsperbyte')) - dataToEncrypt += encodeVarint(shared.config.getint(fromaddress,'payloadlengthextrabytes')) - dataToEncrypt += '\x02' # message encoding type - dataToEncrypt += encodeVarint(len('Subject:' + subject + '\n' + 'Body:' + body)) #Type 2 is simple UTF-8 message encoding per the documentation on the wiki. - dataToEncrypt += 'Subject:' + subject + '\n' + 'Body:' + body - signature = highlevelcrypto.sign( - dataToEncrypt, privSigningKeyHex) - dataToEncrypt += encodeVarint(len(signature)) - dataToEncrypt += signature - - # Encrypt the broadcast with the information contained in the broadcaster's address. Anyone who knows the address can generate - # the private encryption key to decrypt the broadcast. This provides virtually no privacy; its purpose is to keep questionable - # and illegal content from flowing through the Internet connections and being stored on the disk of 3rd parties. - privEncryptionKey = hashlib.sha512(encodeVarint( - addressVersionNumber) + encodeVarint(streamNumber) + ripe).digest()[:32] - pubEncryptionKey = pointMult(privEncryptionKey) - payload += highlevelcrypto.encrypt( - dataToEncrypt, pubEncryptionKey.encode('hex')) - - target = 2 ** 64 / ((len( - payload) + shared.networkDefaultPayloadLengthExtraBytes + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) - print '(For broadcast message) Doing proof of work...' - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Doing work necessary to send broadcast...")))) - initialHash = hashlib.sha512(payload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - print '(For broadcast message) Found proof of work', trialValue, 'Nonce:', nonce - - payload = pack('>Q', nonce) + payload - - inventoryHash = calculateInventoryHash(payload) - objectType = 'broadcast' - shared.inventory[inventoryHash] = ( - objectType, streamNumber, payload, int(time.time())) - print 'sending inv (within sendBroadcast function)' - shared.broadcastToSendDataQueues(( - streamNumber, 'sendinv', inventoryHash)) - - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, translateText("MainWindow", "Broadcast sent on %1").arg(unicode( - strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) - - # Update the status of the message in the 'sent' table to have - # a 'broadcastsent' status - shared.sqlLock.acquire() - t = ('broadcastsent', int( - time.time()), fromaddress, subject, body, 'broadcastqueued') - shared.sqlSubmitQueue.put( - 'UPDATE sent SET status=?, lastactiontime=? WHERE fromaddress=? AND subject=? AND message=? AND status=?') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - else: - shared.printLock.acquire() - sys.stderr.write( - 'Error: In the singleWorker thread, the sendBroadcast function doesn\'t understand the address version.\n') - shared.printLock.release() - - def sendMsg(self): - # Check to see if there are any messages queued to be sent - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT DISTINCT toaddress FROM sent WHERE (status='msgqueued' AND folder='sent')''') - shared.sqlSubmitQueue.put('') - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - for row in queryreturn: # For each address to which we need to send a message, check to see if we have its pubkey already. - toaddress, = row - toripe = decodeAddress(toaddress)[3] - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT hash FROM pubkeys WHERE hash=? ''') - shared.sqlSubmitQueue.put((toripe,)) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - if queryreturn != []: # If we have the needed pubkey, set the status to doingmsgpow (we'll do it further down) - t = (toaddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='doingmsgpow' WHERE toaddress=? AND status='msgqueued' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - else: # We don't have the needed pubkey. Set the status to 'awaitingpubkey' and request it if we haven't already - if toripe in neededPubkeys: - # We already sent a request for the pubkey - t = (toaddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='awaitingpubkey' WHERE toaddress=? AND status='msgqueued' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.UISignalQueue.put(('updateSentItemStatusByHash', ( - toripe, translateText("MainWindow",'Encryption key was requested earlier.')))) - else: - # We have not yet sent a request for the pubkey - t = (toaddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='doingpubkeypow' WHERE toaddress=? AND status='msgqueued' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.UISignalQueue.put(('updateSentItemStatusByHash', ( - toripe, translateText("MainWindow",'Sending a request for the recipient\'s encryption key.')))) - self.requestPubKey(toaddress) - shared.sqlLock.acquire() - # Get all messages that are ready to be sent, and also all messages - # which we have sent in the last 28 days which were previously marked - # as 'toodifficult'. If the user as raised the maximum acceptable - # difficulty then those messages may now be sendable. - shared.sqlSubmitQueue.put( - '''SELECT toaddress, toripe, fromaddress, subject, message, ackdata, status FROM sent WHERE (status='doingmsgpow' or status='forcepow' or (status='toodifficult' and lastactiontime>?)) and folder='sent' ''') - shared.sqlSubmitQueue.put((int(time.time()) - 2419200,)) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - for row in queryreturn: # For each message we need to send.. - toaddress, toripe, fromaddress, subject, message, ackdata, status = row - # There is a remote possibility that we may no longer have the - # recipient's pubkey. Let us make sure we still have it or else the - # sendMsg function will appear to freeze. This can happen if the - # user sends a message but doesn't let the POW function finish, - # then leaves their client off for a long time which could cause - # the needed pubkey to expire and be deleted. - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''SELECT hash FROM pubkeys WHERE hash=? ''') - shared.sqlSubmitQueue.put((toripe,)) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - if queryreturn == [] and toripe not in neededPubkeys: - # We no longer have the needed pubkey and we haven't requested - # it. - shared.printLock.acquire() - sys.stderr.write( - 'For some reason, the status of a message in our outbox is \'doingmsgpow\' even though we lack the pubkey. Here is the RIPE hash of the needed pubkey: %s\n' % toripe.encode('hex')) - shared.printLock.release() - t = (toaddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='msgqueued' WHERE toaddress=? AND status='doingmsgpow' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.UISignalQueue.put(('updateSentItemStatusByHash', ( - toripe, translateText("MainWindow",'Sending a request for the recipient\'s encryption key.')))) - self.requestPubKey(toaddress) - continue - ackdataForWhichImWatching[ackdata] = 0 - toStatus, toAddressVersionNumber, toStreamNumber, toHash = decodeAddress( - toaddress) - fromStatus, fromAddressVersionNumber, fromStreamNumber, fromHash = decodeAddress( - fromaddress) - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Looking up the receiver\'s public key")))) - shared.printLock.acquire() - print 'Found a message in our database that needs to be sent with this pubkey.' - print 'First 150 characters of message:', repr(message[:150]) - shared.printLock.release() - - # mark the pubkey as 'usedpersonally' so that we don't ever delete - # it. - shared.sqlLock.acquire() - t = (toripe,) - shared.sqlSubmitQueue.put( - '''UPDATE pubkeys SET usedpersonally='yes' WHERE hash=?''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - # Let us fetch the recipient's public key out of our database. If - # the required proof of work difficulty is too hard then we'll - # abort. - shared.sqlSubmitQueue.put( - 'SELECT transmitdata FROM pubkeys WHERE hash=?') - shared.sqlSubmitQueue.put((toripe,)) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlLock.release() - if queryreturn == []: - shared.printLock.acquire() - sys.stderr.write( - '(within sendMsg) The needed pubkey was not found. This should never happen. Aborting send.\n') - shared.printLock.release() - return - for row in queryreturn: - pubkeyPayload, = row - - # The pubkey message is stored the way we originally received it - # which means that we need to read beyond things like the nonce and - # time to get to the actual public keys. - readPosition = 8 # to bypass the nonce - pubkeyEmbeddedTime, = unpack( - '>I', pubkeyPayload[readPosition:readPosition + 4]) - # This section is used for the transition from 32 bit time to 64 - # bit time in the protocol. - if pubkeyEmbeddedTime == 0: - pubkeyEmbeddedTime, = unpack( - '>Q', pubkeyPayload[readPosition:readPosition + 8]) - readPosition += 8 - else: - readPosition += 4 - readPosition += 1 # to bypass the address version whose length is definitely 1 - streamNumber, streamNumberLength = decodeVarint( - pubkeyPayload[readPosition:readPosition + 10]) - readPosition += streamNumberLength - behaviorBitfield = pubkeyPayload[readPosition:readPosition + 4] - readPosition += 4 # to bypass the bitfield of behaviors - # pubSigningKeyBase256 = - # pubkeyPayload[readPosition:readPosition+64] #We don't use this - # key for anything here. - readPosition += 64 - pubEncryptionKeyBase256 = pubkeyPayload[ - readPosition:readPosition + 64] - readPosition += 64 - if toAddressVersionNumber == 2: - requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte - requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Doing work necessary to send message.\nThere is no required difficulty for version 2 addresses like this.")))) - elif toAddressVersionNumber == 3: - requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint( - pubkeyPayload[readPosition:readPosition + 10]) - readPosition += varintLength - requiredPayloadLengthExtraBytes, varintLength = decodeVarint( - pubkeyPayload[readPosition:readPosition + 10]) - readPosition += varintLength - if requiredAverageProofOfWorkNonceTrialsPerByte < shared.networkDefaultProofOfWorkNonceTrialsPerByte: # We still have to meet a minimum POW difficulty regardless of what they say is allowed in order to get our message to propagate through the network. - requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte - if requiredPayloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes: - requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, translateText("MainWindow", "Doing work necessary to send message.\nReceiver\'s required difficulty: %1 and %2").arg(str(float( - requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes))))) - if status != 'forcepow': - if (requiredAverageProofOfWorkNonceTrialsPerByte > shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') and shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') != 0) or (requiredPayloadLengthExtraBytes > shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') and shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') != 0): - # The demanded difficulty is more than we are willing - # to do. - shared.sqlLock.acquire() - t = (ackdata,) - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='toodifficult' WHERE ackdata=? ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, translateText("MainWindow", "Problem: The work demanded by the recipient (%1 and %2) is more difficult than you are willing to do.").arg(str(float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float( - requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes)).arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) - continue - - embeddedTime = pack('>Q', (int(time.time()) + random.randrange( - -300, 300))) # the current time plus or minus five minutes. We will use this time both for our message and for the ackdata packed within our message. - if fromAddressVersionNumber == 2: - payload = '\x01' # Message version. - payload += encodeVarint(fromAddressVersionNumber) - payload += encodeVarint(fromStreamNumber) - payload += '\x00\x00\x00\x01' # Bitfield of features and behaviors that can be expected from me. (See https://bitmessage.org/wiki/Protocol_specification#Pubkey_bitfield_features ) - - # We need to convert our private keys to public keys in order - # to include them. - try: - privSigningKeyBase58 = shared.config.get( - fromaddress, 'privsigningkey') - privEncryptionKeyBase58 = shared.config.get( - fromaddress, 'privencryptionkey') - except: - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) - continue - - privSigningKeyHex = shared.decodeWalletImportFormat( - privSigningKeyBase58).encode('hex') - privEncryptionKeyHex = shared.decodeWalletImportFormat( - privEncryptionKeyBase58).encode('hex') - - pubSigningKey = highlevelcrypto.privToPub( - privSigningKeyHex).decode('hex') - pubEncryptionKey = highlevelcrypto.privToPub( - privEncryptionKeyHex).decode('hex') - - payload += pubSigningKey[ - 1:] # The \x04 on the beginning of the public keys are not sent. This way there is only one acceptable way to encode and send a public key. - payload += pubEncryptionKey[1:] - - payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack. - payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki. - messageToTransmit = 'Subject:' + \ - subject + '\n' + 'Body:' + message - payload += encodeVarint(len(messageToTransmit)) - payload += messageToTransmit - fullAckPayload = self.generateFullAckMessage( - ackdata, toStreamNumber, embeddedTime) # The fullAckPayload is a normal msg protocol message with the proof of work already completed that the receiver of this message can easily send out. - payload += encodeVarint(len(fullAckPayload)) - payload += fullAckPayload - signature = highlevelcrypto.sign(payload, privSigningKeyHex) - payload += encodeVarint(len(signature)) - payload += signature - - if fromAddressVersionNumber == 3: - payload = '\x01' # Message version. - payload += encodeVarint(fromAddressVersionNumber) - payload += encodeVarint(fromStreamNumber) - payload += '\x00\x00\x00\x01' # Bitfield of features and behaviors that can be expected from me. (See https://bitmessage.org/wiki/Protocol_specification#Pubkey_bitfield_features ) - - # We need to convert our private keys to public keys in order - # to include them. - try: - privSigningKeyBase58 = shared.config.get( - fromaddress, 'privsigningkey') - privEncryptionKeyBase58 = shared.config.get( - fromaddress, 'privencryptionkey') - except: - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( - ackdata, translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) - continue - - privSigningKeyHex = shared.decodeWalletImportFormat( - privSigningKeyBase58).encode('hex') - privEncryptionKeyHex = shared.decodeWalletImportFormat( - privEncryptionKeyBase58).encode('hex') - - pubSigningKey = highlevelcrypto.privToPub( - privSigningKeyHex).decode('hex') - pubEncryptionKey = highlevelcrypto.privToPub( - privEncryptionKeyHex).decode('hex') - - payload += pubSigningKey[ - 1:] # The \x04 on the beginning of the public keys are not sent. This way there is only one acceptable way to encode and send a public key. - payload += pubEncryptionKey[1:] - # If the receiver of our message is in our address book, - # subscriptions list, or whitelist then we will allow them to - # do the network-minimum proof of work. Let us check to see if - # the receiver is in any of those lists. - if shared.isAddressInMyAddressBookSubscriptionsListOrWhitelist(toaddress): - payload += encodeVarint( - shared.networkDefaultProofOfWorkNonceTrialsPerByte) - payload += encodeVarint( - shared.networkDefaultPayloadLengthExtraBytes) - else: - payload += encodeVarint(shared.config.getint( - fromaddress, 'noncetrialsperbyte')) - payload += encodeVarint(shared.config.getint( - fromaddress, 'payloadlengthextrabytes')) - - payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack. - payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki. - messageToTransmit = 'Subject:' + \ - subject + '\n' + 'Body:' + message - payload += encodeVarint(len(messageToTransmit)) - payload += messageToTransmit - fullAckPayload = self.generateFullAckMessage( - ackdata, toStreamNumber, embeddedTime) # The fullAckPayload is a normal msg protocol message with the proof of work already completed that the receiver of this message can easily send out. - payload += encodeVarint(len(fullAckPayload)) - payload += fullAckPayload - signature = highlevelcrypto.sign(payload, privSigningKeyHex) - payload += encodeVarint(len(signature)) - payload += signature - - - # We have assembled the data that will be encrypted. - try: - encrypted = highlevelcrypto.encrypt(payload,"04"+pubEncryptionKeyBase256.encode('hex')) - except: - shared.sqlLock.acquire() - t = (ackdata,) - shared.sqlSubmitQueue.put('''UPDATE sent SET status='badkey' WHERE ackdata=?''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,translateText("MainWindow",'Problem: The recipient\'s encryption key is no good. Could not encrypt message. %1').arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'),localtime(int(time.time()))),'utf-8'))))) - continue - encryptedPayload = embeddedTime + encodeVarint(toStreamNumber) + encrypted - target = 2**64 / ((len(encryptedPayload)+requiredPayloadLengthExtraBytes+8) * requiredAverageProofOfWorkNonceTrialsPerByte) - shared.printLock.acquire() - print '(For msg message) Doing proof of work. Total required difficulty:', float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte, 'Required small message difficulty:', float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes - shared.printLock.release() - powStartTime = time.time() - initialHash = hashlib.sha512(encryptedPayload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - shared.printLock.acquire() - print '(For msg message) Found proof of work', trialValue, 'Nonce:', nonce - try: - print 'POW took', int(time.time() - powStartTime), 'seconds.', nonce / (time.time() - powStartTime), 'nonce trials per second.' - except: - pass - shared.printLock.release() - encryptedPayload = pack('>Q', nonce) + encryptedPayload - - inventoryHash = calculateInventoryHash(encryptedPayload) - objectType = 'msg' - shared.inventory[inventoryHash] = ( - objectType, toStreamNumber, encryptedPayload, int(time.time())) - shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, translateText("MainWindow", "Message sent. Waiting on acknowledgement. Sent on %1").arg(unicode( - strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) - print 'Broadcasting inv for my msg(within sendmsg function):', inventoryHash.encode('hex') - shared.broadcastToSendDataQueues(( - streamNumber, 'sendinv', inventoryHash)) - - # Update the status of the message in the 'sent' table to have a - # 'msgsent' status - shared.sqlLock.acquire() - t = (ackdata,) - shared.sqlSubmitQueue.put('''UPDATE sent SET status='msgsent' WHERE ackdata=?''') - shared.sqlSubmitQueue.put(t) - queryreturn = shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - - def requestPubKey(self, toAddress): - toStatus, addressVersionNumber, streamNumber, ripe = decodeAddress( - toAddress) - if toStatus != 'success': - shared.printLock.acquire() - sys.stderr.write('Very abnormal error occurred in requestPubKey. toAddress is: ' + repr( - toAddress) + '. Please report this error to Atheros.') - shared.printLock.release() - return - neededPubkeys[ripe] = 0 - payload = pack('>Q', (int(time.time()) + random.randrange( - -300, 300))) # the current time plus or minus five minutes. - payload += encodeVarint(addressVersionNumber) - payload += encodeVarint(streamNumber) - payload += ripe - shared.printLock.acquire() - print 'making request for pubkey with ripe:', ripe.encode('hex') - shared.printLock.release() - # print 'trial value', trialValue - statusbar = 'Doing the computations necessary to request the recipient\'s public key.' - shared.UISignalQueue.put(('updateStatusBar', statusbar)) - shared.UISignalQueue.put(('updateSentItemStatusByHash', ( - ripe, translateText("MainWindow",'Doing work necessary to request encryption key.')))) - target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + - 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) - initialHash = hashlib.sha512(payload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - shared.printLock.acquire() - print 'Found proof of work', trialValue, 'Nonce:', nonce - shared.printLock.release() - - payload = pack('>Q', nonce) + payload - inventoryHash = calculateInventoryHash(payload) - objectType = 'getpubkey' - shared.inventory[inventoryHash] = ( - objectType, streamNumber, payload, int(time.time())) - print 'sending inv (for the getpubkey message)' - shared.broadcastToSendDataQueues(( - streamNumber, 'sendinv', inventoryHash)) - - t = (toAddress,) - shared.sqlLock.acquire() - shared.sqlSubmitQueue.put( - '''UPDATE sent SET status='awaitingpubkey' WHERE toaddress=? AND status='doingpubkeypow' ''') - shared.sqlSubmitQueue.put(t) - shared.sqlReturnQueue.get() - shared.sqlSubmitQueue.put('commit') - shared.sqlLock.release() - - shared.UISignalQueue.put(( - 'updateStatusBar', translateText("MainWindow",'Broacasting the public key request. This program will auto-retry if they are offline.'))) - shared.UISignalQueue.put(('updateSentItemStatusByHash', (ripe, translateText("MainWindow",'Sending public key request. Waiting for reply. Requested at %1').arg(unicode( - strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) - - def generateFullAckMessage(self, ackdata, toStreamNumber, embeddedTime): - payload = embeddedTime + encodeVarint(toStreamNumber) + ackdata - target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + - 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) - shared.printLock.acquire() - print '(For ack message) Doing proof of work...' - shared.printLock.release() - powStartTime = time.time() - initialHash = hashlib.sha512(payload).digest() - trialValue, nonce = proofofwork.run(target, initialHash) - shared.printLock.acquire() - print '(For ack message) Found proof of work', trialValue, 'Nonce:', nonce - try: - print 'POW took', int(time.time() - powStartTime), 'seconds.', nonce / (time.time() - powStartTime), 'nonce trials per second.' - except: - pass - shared.printLock.release() - payload = pack('>Q', nonce) + payload - 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)) - headerData += hashlib.sha512(payload).digest()[:4] - return headerData + payload - - - # This is one of several classes that constitute the API # This class was written by Vaibhav Bhatia. Modified by Jonathan Warren (Atheros). # http://code.activestate.com/recipes/501148-xmlrpc-serverclient-which-does-cookie-handling-and/ @@ -4013,54 +663,14 @@ class singleAPI(threading.Thread): se.register_introspection_functions() se.serve_forever() -# This is used so that the translateText function can be used when we are in daemon mode and not using any QT functions. -class translateClass: - def __init__(self, context, text): - self.context = context - self.text = text - def arg(self,argument): - if '%' in self.text: - return translateClass(self.context, self.text.replace('%','',1)) # This doesn't actually do anything with the arguments because we don't have a UI in which to display this information anyway. - else: - return self.text - -def _translate(context, text): - return translateText(context, text) - -def translateText(context, text): - if not shared.safeConfigGetBoolean('bitmessagesettings', 'daemon'): - try: - from PyQt4 import QtCore, QtGui - except Exception as err: - print 'PyBitmessage requires PyQt unless you want to run it as a daemon and interact with it using the API. You can download PyQt from http://www.riverbankcomputing.com/software/pyqt/download or by searching Google for \'PyQt Download\'. If you want to run in daemon mode, see https://bitmessage.org/wiki/Daemon' - print 'Error message:', err - os._exit(0) - return QtGui.QApplication.translate(context, text) - else: - if '%' in text: - return translateClass(context, text.replace('%','',1)) - else: - return text - - selfInitiatedConnections = {} # This is a list of current connections (the thread pointers at least) -alreadyAttemptedConnectionsList = { -} # This is a list of nodes to which we have already attempted a connection -ackdataForWhichImWatching = {} -alreadyAttemptedConnectionsListLock = threading.Lock() -eightBytesOfRandomDataUsedToDetectConnectionsToSelf = pack( - '>Q', random.randrange(1, 18446744073709551615)) -neededPubkeys = {} -successfullyDecryptMessageTimings = [ -] # A list of the amounts of time it took to successfully decrypt msg messages -apiAddressGeneratorReturnQueue = Queue.Queue( -) # The address generator thread uses this queue to get information back to the API thread. -alreadyAttemptedConnectionsListResetTime = int( - time.time()) # used to clear out the alreadyAttemptedConnectionsList periodically so that we will retry connecting to hosts to which we have already tried to connect. -numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer = {} -if useVeryEasyProofOfWorkForTesting: + + + + +if shared.useVeryEasyProofOfWorkForTesting: shared.networkDefaultProofOfWorkNonceTrialsPerByte = int( shared.networkDefaultProofOfWorkNonceTrialsPerByte / 16) shared.networkDefaultPayloadLengthExtraBytes = int( @@ -4131,6 +741,7 @@ if __name__ == "__main__": connectToStream(1) singleListenerThread = singleListener() + singleListenerThread.setup(selfInitiatedConnections) singleListenerThread.daemon = True # close the main program even if there are threads left singleListenerThread.start() diff --git a/src/bitmessageqt/__init__.py b/src/bitmessageqt/__init__.py index 3f0c7e6f..9930b318 100644 --- a/src/bitmessageqt/__init__.py +++ b/src/bitmessageqt/__init__.py @@ -12,7 +12,6 @@ except Exception as err: print 'Error message:', err sys.exit() - try: _encoding = QtGui.QApplication.UnicodeUTF8 except AttributeError: @@ -21,7 +20,6 @@ except AttributeError: def _translate(context, text): return QtGui.QApplication.translate(context, text) - withMessagingMenu = False try: from gi.repository import MessagingMenu diff --git a/src/build_osx.py b/src/build_osx.py index de08da4c..db004769 100644 --- a/src/build_osx.py +++ b/src/build_osx.py @@ -9,7 +9,7 @@ Usage (Windows): """ import sys, os, shutil, re -from setuptools import setup +from setuptools import setup # @UnresolvedImport name = "Bitmessage" diff --git a/src/class_addressGenerator.py b/src/class_addressGenerator.py index e22fdd51..38c7d5b9 100644 --- a/src/class_addressGenerator.py +++ b/src/class_addressGenerator.py @@ -1,12 +1,14 @@ import shared import threading -import bitmessagemain import time +import sys from pyelliptic.openssl import OpenSSL import ctypes import hashlib +import highlevelcrypto from addresses import * from pyelliptic import arithmetic +import tr class addressGenerator(threading.Thread): @@ -42,7 +44,7 @@ class addressGenerator(threading.Thread): if addressVersionNumber == 3: # currently the only one supported. if command == 'createRandomAddress': shared.UISignalQueue.put(( - 'updateStatusBar', bitmessagemain.translateText("MainWindow", "Generating one new address"))) + 'updateStatusBar', tr.translateText("MainWindow", "Generating one new address"))) # This next section is a little bit strange. We're going to generate keys over and over until we # find one that starts with either \x00 or \x00\x00. Then when we pack them into a Bitmessage address, # we won't store the \x00 or \x00\x00 bytes thus making the @@ -110,10 +112,10 @@ class addressGenerator(threading.Thread): # It may be the case that this address is being generated # as a result of a call to the API. Let us put the result # in the necessary queue. - bitmessagemain.apiAddressGeneratorReturnQueue.put(address) + shared.apiAddressGeneratorReturnQueue.put(address) shared.UISignalQueue.put(( - 'updateStatusBar', bitmessagemain.translateText("MainWindow", "Done generating address. Doing work necessary to broadcast it..."))) + 'updateStatusBar', tr.translateText("MainWindow", "Done generating address. Doing work necessary to broadcast it..."))) shared.UISignalQueue.put(('writeNewAddressToTable', ( label, address, streamNumber))) shared.reloadMyAddressHashes() @@ -233,13 +235,13 @@ class addressGenerator(threading.Thread): # It may be the case that this address is being # generated as a result of a call to the API. Let us # put the result in the necessary queue. - bitmessagemain.apiAddressGeneratorReturnQueue.put( + shared.apiAddressGeneratorReturnQueue.put( listOfNewAddressesToSendOutThroughTheAPI) shared.UISignalQueue.put(( - 'updateStatusBar', bitmessagemain.translateText("MainWindow", "Done generating address"))) + 'updateStatusBar', tr.translateText("MainWindow", "Done generating address"))) # shared.reloadMyAddressHashes() elif command == 'getDeterministicAddress': - bitmessagemain.apiAddressGeneratorReturnQueue.put(address) + shared.apiAddressGeneratorReturnQueue.put(address) else: raise Exception( "Error in the addressGenerator thread. Thread was given a command it could not understand: " + command) diff --git a/src/class_outgoingSynSender.py b/src/class_outgoingSynSender.py new file mode 100644 index 00000000..d547b3e3 --- /dev/null +++ b/src/class_outgoingSynSender.py @@ -0,0 +1,174 @@ +import threading +import time +import random +import shared +import socks +import socket +import sys +import tr + +#import bitmessagemain +from class_sendDataThread import * +from class_receiveDataThread import * + +# For each stream to which we connect, several outgoingSynSender threads +# will exist and will collectively create 8 connections with peers. + +class outgoingSynSender(threading.Thread): + + def __init__(self): + threading.Thread.__init__(self) + + def setup(self, streamNumber, selfInitiatedConnections): + self.streamNumber = streamNumber + self.selfInitiatedConnections = selfInitiatedConnections + + def run(self): + time.sleep(1) + while True: + while len(self.selfInitiatedConnections[self.streamNumber]) >= 8: # maximum number of outgoing connections = 8 + time.sleep(10) + if shared.shutdown: + break + random.seed() + shared.knownNodesLock.acquire() + HOST, = random.sample(shared.knownNodes[self.streamNumber], 1) + shared.knownNodesLock.release() + shared.alreadyAttemptedConnectionsListLock.acquire() + while HOST in shared.alreadyAttemptedConnectionsList or HOST in shared.connectedHostsList: + shared.alreadyAttemptedConnectionsListLock.release() + # print 'choosing new sample' + random.seed() + shared.knownNodesLock.acquire() + HOST, = random.sample(shared.knownNodes[self.streamNumber], 1) + shared.knownNodesLock.release() + time.sleep(1) + # Clear out the shared.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() - shared.alreadyAttemptedConnectionsListResetTime) > 1800: + shared.alreadyAttemptedConnectionsList.clear() + shared.alreadyAttemptedConnectionsListResetTime = int( + time.time()) + shared.alreadyAttemptedConnectionsListLock.acquire() + shared.alreadyAttemptedConnectionsList[HOST] = 0 + shared.alreadyAttemptedConnectionsListLock.release() + PORT, timeNodeLastSeen = shared.knownNodes[ + self.streamNumber][HOST] + sock = socks.socksocket(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.settimeout(20) + if shared.config.get('bitmessagesettings', 'socksproxytype') == 'none' and shared.verbose >= 2: + shared.printLock.acquire() + print 'Trying an outgoing connection to', HOST, ':', PORT + shared.printLock.release() + # sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) + elif shared.config.get('bitmessagesettings', 'socksproxytype') == 'SOCKS4a': + if shared.verbose >= 2: + shared.printLock.acquire() + print '(Using SOCKS4a) Trying an outgoing connection to', HOST, ':', PORT + shared.printLock.release() + proxytype = socks.PROXY_TYPE_SOCKS4 + sockshostname = shared.config.get( + 'bitmessagesettings', 'sockshostname') + socksport = shared.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 shared.config.getboolean('bitmessagesettings', 'socksauthentication'): + socksusername = shared.config.get( + 'bitmessagesettings', 'socksusername') + sockspassword = shared.config.get( + 'bitmessagesettings', 'sockspassword') + sock.setproxy( + proxytype, sockshostname, socksport, rdns, socksusername, sockspassword) + else: + sock.setproxy( + proxytype, sockshostname, socksport, rdns) + elif shared.config.get('bitmessagesettings', 'socksproxytype') == 'SOCKS5': + if shared.verbose >= 2: + shared.printLock.acquire() + print '(Using SOCKS5) Trying an outgoing connection to', HOST, ':', PORT + shared.printLock.release() + proxytype = socks.PROXY_TYPE_SOCKS5 + sockshostname = shared.config.get( + 'bitmessagesettings', 'sockshostname') + socksport = shared.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 shared.config.getboolean('bitmessagesettings', 'socksauthentication'): + socksusername = shared.config.get( + 'bitmessagesettings', 'socksusername') + sockspassword = shared.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() + rd.daemon = True # close the main program even if there are threads left + someObjectsOfWhichThisRemoteNodeIsAlreadyAware = {} # This is not necessairly a complete list; we clear it from time to time to save memory. + rd.setup(sock, HOST, PORT, self.streamNumber, + someObjectsOfWhichThisRemoteNodeIsAlreadyAware, self.selfInitiatedConnections) + rd.start() + shared.printLock.acquire() + print self, 'connected to', HOST, 'during an outgoing attempt.' + shared.printLock.release() + + sd = sendDataThread() + sd.setup(sock, HOST, PORT, self.streamNumber, + someObjectsOfWhichThisRemoteNodeIsAlreadyAware) + sd.start() + sd.sendVersionMessage() + + except socks.GeneralProxyError as err: + if shared.verbose >= 2: + shared.printLock.acquire() + print 'Could NOT connect to', HOST, 'during outgoing attempt.', err + shared.printLock.release() + PORT, timeLastSeen = shared.knownNodes[ + self.streamNumber][HOST] + if (int(time.time()) - timeLastSeen) > 172800 and len(shared.knownNodes[self.streamNumber]) > 1000: # for nodes older than 48 hours old if we have more than 1000 hosts in our list, delete from the shared.knownNodes data-structure. + shared.knownNodesLock.acquire() + del shared.knownNodes[self.streamNumber][HOST] + shared.knownNodesLock.release() + shared.printLock.acquire() + print 'deleting ', HOST, 'from shared.knownNodes because it is more than 48 hours old and we could not connect to it.' + shared.printLock.release() + except socks.Socks5AuthError as err: + shared.UISignalQueue.put(( + 'updateStatusBar', tr.translateText( + "MainWindow", "SOCKS5 Authentication problem: %1").arg(str(err)))) + except socks.Socks5Error as err: + pass + print 'SOCKS5 error. (It is possible that the server wants authentication).)', str(err) + except socks.Socks4Error as err: + print 'Socks4Error:', err + except socket.error as err: + if shared.config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS': + print 'Bitmessage MIGHT be having trouble connecting to the SOCKS server. ' + str(err) + else: + if shared.verbose >= 1: + shared.printLock.acquire() + print 'Could NOT connect to', HOST, 'during outgoing attempt.', err + shared.printLock.release() + PORT, timeLastSeen = shared.knownNodes[ + self.streamNumber][HOST] + if (int(time.time()) - timeLastSeen) > 172800 and len(shared.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. + shared.knownNodesLock.acquire() + del shared.knownNodes[self.streamNumber][HOST] + shared.knownNodesLock.release() + shared.printLock.acquire() + print 'deleting ', HOST, 'from knownNodes because it is more than 48 hours old and we could not connect to it.' + shared.printLock.release() + except Exception as err: + sys.stderr.write( + 'An exception has occurred in the outgoingSynSender thread that was not caught by other exception types: ') + import traceback + traceback.print_exc() + time.sleep(0.1) diff --git a/src/class_receiveDataThread.py b/src/class_receiveDataThread.py new file mode 100644 index 00000000..e5293fe8 --- /dev/null +++ b/src/class_receiveDataThread.py @@ -0,0 +1,2048 @@ +doTimingAttackMitigation = True + +import time +import threading +import shared +import hashlib +import socket +import pickle +import random +from struct import unpack, pack +import sys +import string +from subprocess import call # used when the API must execute an outside program +from pyelliptic.openssl import OpenSSL + +import highlevelcrypto +from addresses import * +import helper_generic +import helper_bitcoin +import helper_inbox +import helper_sent +import tr +#from bitmessagemain import shared.lengthOfTimeToLeaveObjectsInInventory, shared.lengthOfTimeToHoldOnToAllPubkeys, shared.maximumAgeOfAnObjectThatIAmWillingToAccept, shared.maximumAgeOfObjectsThatIAdvertiseToOthers, shared.maximumAgeOfNodesThatIAdvertiseToOthers, shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer, shared.neededPubkeys + +# This thread is created either by the synSenderThread(for outgoing +# connections) or the singleListenerThread(for incoming connectiosn). + +class receiveDataThread(threading.Thread): + + def __init__(self): + threading.Thread.__init__(self) + self.data = '' + self.verackSent = False + self.verackReceived = False + + def setup( + self, + sock, + HOST, + port, + streamNumber, + someObjectsOfWhichThisRemoteNodeIsAlreadyAware, + selfInitiatedConnections): + self.sock = sock + self.HOST = HOST + self.PORT = port + self.streamNumber = streamNumber + self.payloadLength = 0 # This is the protocol payload length thus it doesn't include the 24 byte message header + self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = {} + self.selfInitiatedConnections = selfInitiatedConnections + shared.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 + self.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.someObjectsOfWhichThisRemoteNodeIsAlreadyAware = someObjectsOfWhichThisRemoteNodeIsAlreadyAware + + def run(self): + shared.printLock.acquire() + print 'ID of the receiveDataThread is', str(id(self)) + '. The size of the shared.connectedHostsList is now', len(shared.connectedHostsList) + shared.printLock.release() + while True: + try: + self.data += self.sock.recv(4096) + except socket.timeout: + shared.printLock.acquire() + print 'Timeout occurred waiting for data from', self.HOST + '. Closing receiveData thread. (ID:', str(id(self)) + ')' + shared.printLock.release() + break + except Exception as err: + shared.printLock.acquire() + print 'sock.recv error. Closing receiveData thread (HOST:', self.HOST, 'ID:', str(id(self)) + ').', err + shared.printLock.release() + break + # print 'Received', repr(self.data) + if self.data == "": + shared.printLock.acquire() + print 'Connection to', self.HOST, 'closed. Closing receiveData thread. (ID:', str(id(self)) + ')' + shared.printLock.release() + break + else: + self.processData() + + try: + del self.selfInitiatedConnections[self.streamNumber][self] + shared.printLock.acquire() + print 'removed self (a receiveDataThread) from selfInitiatedConnections' + shared.printLock.release() + except: + pass + shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) + try: + del shared.connectedHostsList[self.HOST] + except Exception as err: + shared.printLock.acquire() + print 'Could not delete', self.HOST, 'from shared.connectedHostsList.', err + shared.printLock.release() + try: + del shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ + self.HOST] + except: + pass + shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data')) + shared.printLock.acquire() + print 'The size of the connectedHostsList is now:', len(shared.connectedHostsList) + shared.printLock.release() + + def processData(self): + # if shared.verbose >= 3: + # shared.printLock.acquire() + # print 'self.data is currently ', repr(self.data) + # shared.printLock.release() + if len(self.data) < 20: # if so little of the data has arrived that we can't even unpack the payload length + return + if self.data[0:4] != '\xe9\xbe\xb4\xd9': + if shared.verbose >= 1: + shared.printLock.acquire() + print 'The magic bytes were not correct. First 40 bytes of data: ' + repr(self.data[0:40]) + shared.printLock.release() + self.data = "" + return + self.payloadLength, = unpack('>L', self.data[16:20]) + if len(self.data) < self.payloadLength + 24: # check if the whole message has arrived yet. + return + 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 'Checksum incorrect. Clearing this message.' + self.data = self.data[self.payloadLength + 24:] + self.processData() + return + # 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 and self.connectionIsOrWasFullyEstablished: # 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). + shared.knownNodesLock.acquire() + shared.knownNodes[self.streamNumber][ + self.HOST] = (self.PORT, int(time.time())) + shared.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] + shared.printLock.acquire() + print 'remoteCommand', repr(remoteCommand.replace('\x00', '')), ' from', self.HOST + shared.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 == '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 == '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 shared.inventory: + shared.printLock.acquire() + print 'Inventory (in memory) already has object listed in inv message.' + shared.printLock.release() + del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[ + objectHash] + elif shared.isInSqlInventory(objectHash): + if shared.verbose >= 3: + shared.printLock.acquire() + print 'Inventory (SQL on disk) already has object listed in inv message.' + shared.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: + shared.printLock.acquire() + print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) + shared.printLock.release() + try: + del shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ + self.HOST] # this data structure is maintained so that we can keep track of how many total objects, across all connections, are currently outstanding. If it goes too high it can indicate that we are under attack by multiple nodes working together. + except: + pass + break + if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) == 0: + shared.printLock.acquire() + print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) + shared.printLock.release() + try: + del shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ + self.HOST] # this data structure is maintained so that we can keep track of how many total objects, across all connections, are currently outstanding. If it goes too high it can indicate that we are under attack by multiple nodes working together. + except: + pass + if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 0: + shared.printLock.acquire() + print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) + shared.printLock.release() + shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[self.HOST] = len( + self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) # this data structure is maintained so that we can keep track of how many total objects, across all connections, are currently outstanding. If it goes too high it can indicate that we are under attack by multiple nodes working together. + if len(self.ackDataThatWeHaveYetToSend) > 0: + self.data = self.ackDataThatWeHaveYetToSend.pop() + self.processData() + + def isProofOfWorkSufficient( + self, + data, + nonceTrialsPerByte=0, + payloadLengthExtraBytes=0): + if nonceTrialsPerByte < shared.networkDefaultProofOfWorkNonceTrialsPerByte: + nonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte + if payloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes: + payloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes + POW, = unpack('>Q', hashlib.sha512(hashlib.sha512(data[ + :8] + hashlib.sha512(data[8:]).digest()).digest()).digest()[0:8]) + # print 'POW:', POW + return POW <= 2 ** 64 / ((len(data) + payloadLengthExtraBytes) * (nonceTrialsPerByte)) + + def sendpong(self): + print 'Sending pong' + 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') + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.printLock.release() + + def recverack(self): + print 'verack received' + self.verackReceived = True + if self.verackSent: + # We have thus both sent and received a verack. + self.connectionFullyEstablished() + + def connectionFullyEstablished(self): + self.connectionIsOrWasFullyEstablished = True + if not self.initiatedConnection: + shared.UISignalQueue.put(('setStatusIcon', 'green')) + 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. + shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data')) + remoteNodeIncomingPort, remoteNodeSeenTime = shared.knownNodes[ + self.streamNumber][self.HOST] + shared.printLock.acquire() + print 'Connection fully established with', self.HOST, remoteNodeIncomingPort + print 'The size of the connectedHostsList is now', len(shared.connectedHostsList) + print 'The length of sendDataQueues is now:', len(shared.sendDataQueues) + print 'broadcasting addr from within connectionFullyEstablished function.' + shared.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 len(shared.connectedHostsList) > 200: + shared.printLock.acquire() + print 'We are connected to too many people. Closing connection.' + shared.printLock.release() + shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) + return + self.sendBigInv() + + def sendBigInv(self): + shared.sqlLock.acquire() + # Select all hashes which are younger than two days old and in this + # stream. + t = (int(time.time()) - shared.maximumAgeOfObjectsThatIAdvertiseToOthers, int( + time.time()) - shared.lengthOfTimeToHoldOnToAllPubkeys, self.streamNumber) + shared.sqlSubmitQueue.put( + '''SELECT hash FROM inventory WHERE ((receivedtime>? and objecttype<>'pubkey') or (receivedtime>? and objecttype='pubkey')) and streamnumber=?''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + bigInvList = {} + for row in queryreturn: + hash, = row + if hash not in self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware: + bigInvList[hash] = 0 + # We also have messages in our inventory in memory (which is a python + # dictionary). Let's fetch those too. + for hash, storedValue in shared.inventory.items(): + if hash not in self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware: + objectType, streamNumber, payload, receivedTime = storedValue + if streamNumber == self.streamNumber and receivedTime > int(time.time()) - shared.maximumAgeOfObjectsThatIAdvertiseToOthers: + bigInvList[hash] = 0 + 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] + shared.printLock.acquire() + print 'Sending huge inv message with', numberOfObjects, 'objects to just this one peer' + shared.printLock.release() + try: + self.sock.sendall(headerData + payload) + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.printLock.release() + + # 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()) - shared.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 + # Let us check to make sure the stream number is correct (thus + # preventing an individual from sending broadcasts out on the wrong + # streams or all streams). + broadcastVersion, broadcastVersionLength = decodeVarint( + data[readPosition:readPosition + 10]) + if broadcastVersion >= 2: + streamNumber, streamNumberLength = decodeVarint(data[ + readPosition + broadcastVersionLength:readPosition + broadcastVersionLength + 10]) + if streamNumber != self.streamNumber: + print 'The stream number encoded in this broadcast message (' + str(streamNumber) + ') does not match the stream number on which it was received. Ignoring it.' + return + + shared.inventoryLock.acquire() + self.inventoryHash = calculateInventoryHash(data) + if self.inventoryHash in shared.inventory: + print 'We have already received this broadcast object. Ignoring.' + shared.inventoryLock.release() + return + elif shared.isInSqlInventory(self.inventoryHash): + print 'We have already received this broadcast object (it is stored on disk in the SQL inventory). Ignoring it.' + shared.inventoryLock.release() + return + # It is valid so far. Let's let our peers know about it. + objectType = 'broadcast' + shared.inventory[self.inventoryHash] = ( + objectType, self.streamNumber, data, embeddedTime) + shared.inventoryLock.release() + self.broadcastinv(self.inventoryHash) + shared.UISignalQueue.put(( + 'incrementNumberOfBroadcastsProcessed', 'no data')) + + 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 = .6 # seconds. + + sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - \ + (time.time() - self.messageProcessingStartTime) + if sleepTime > 0 and doTimingAttackMitigation: + shared.printLock.acquire() + print 'Timing attack mitigation: Sleeping for', sleepTime, 'seconds.' + shared.printLock.release() + time.sleep(sleepTime) + shared.printLock.acquire() + print 'Total message processing time:', time.time() - self.messageProcessingStartTime, 'seconds.' + shared.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]) + readPosition += broadcastVersionLength + if broadcastVersion < 1 or broadcastVersion > 2: + print 'Cannot decode incoming broadcast versions higher than 2. Assuming the sender isn\'t being silly, you should upgrade Bitmessage because this message shall be ignored.' + return + if broadcastVersion == 1: + 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\'t 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]) + 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 shared.broadcastSendersForWhichImWatching: + # Display timing data + shared.printLock.acquire() + print 'Time spent deciding that we are not interested in this v1 broadcast:', time.time() - self.messageProcessingStartTime + shared.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: + if not highlevelcrypto.verify(data[12:readPositionAtBottomOfMessage], signature, sendersPubSigningKey.encode('hex')): + print 'ECDSA verify failed' + return + print 'ECDSA verify passed' + except Exception as 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(), '\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + data[ + beginningOfPubkeyPosition:endOfPubkeyPosition], int(time.time()), 'yes') + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + # shared.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. + self.possibleNewPubkey(ripe.digest()) + + fromAddress = encodeAddress( + sendersAddressVersion, sendersStream, ripe.digest()) + shared.printLock.acquire() + print 'fromAddress:', fromAddress + shared.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: + + t = (self.inventoryHash, toAddress, fromAddress, subject, int( + time.time()), body, 'inbox', messageEncodingType, 0) + helper_inbox.insert(t) + + shared.UISignalQueue.put(('displayNewInboxMessage', ( + 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 shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'): + try: + apiNotifyPath = shared.config.get( + 'bitmessagesettings', 'apinotifypath') + except: + apiNotifyPath = '' + if apiNotifyPath != '': + call([apiNotifyPath, "newBroadcast"]) + + # Display timing data + shared.printLock.acquire() + print 'Time spent processing this interesting broadcast:', time.time() - self.messageProcessingStartTime + shared.printLock.release() + if broadcastVersion == 2: + cleartextStreamNumber, cleartextStreamNumberLength = decodeVarint( + data[readPosition:readPosition + 10]) + readPosition += cleartextStreamNumberLength + initialDecryptionSuccessful = False + for key, cryptorObject in shared.MyECSubscriptionCryptorObjects.items(): + try: + decryptedData = cryptorObject.decrypt(data[readPosition:]) + toRipe = key # This is the RIPE hash of the sender's pubkey. We need this below to compare to the RIPE hash of the sender's address to verify that it was encrypted by with their key rather than some other key. + initialDecryptionSuccessful = True + print 'EC decryption successful using key associated with ripe hash:', key.encode('hex') + break + except Exception as err: + pass + # print 'cryptorObject.decrypt Exception:', err + if not initialDecryptionSuccessful: + # This is not a broadcast I am interested in. + shared.printLock.acquire() + print 'Length of time program spent failing to decrypt this v2 broadcast:', time.time() - self.messageProcessingStartTime, 'seconds.' + shared.printLock.release() + return + # At this point this is a broadcast I have decrypted and thus am + # interested in. + signedBroadcastVersion, readPosition = decodeVarint( + decryptedData[:10]) + beginningOfPubkeyPosition = readPosition # used when we add the pubkey to our pubkey table + sendersAddressVersion, sendersAddressVersionLength = decodeVarint( + decryptedData[readPosition:readPosition + 9]) + if sendersAddressVersion < 2 or sendersAddressVersion > 3: + print 'Cannot decode senderAddressVersion other than 2 or 3. Assuming the sender isn\'t being silly, you should upgrade Bitmessage because this message shall be ignored.' + return + readPosition += sendersAddressVersionLength + sendersStream, sendersStreamLength = decodeVarint( + decryptedData[readPosition:readPosition + 9]) + if sendersStream != cleartextStreamNumber: + print 'The stream number outside of the encryption on which the POW was completed doesn\'t match the stream number inside the encryption. Ignoring broadcast.' + return + readPosition += sendersStreamLength + behaviorBitfield = decryptedData[readPosition:readPosition + 4] + readPosition += 4 + sendersPubSigningKey = '\x04' + \ + decryptedData[readPosition:readPosition + 64] + readPosition += 64 + sendersPubEncryptionKey = '\x04' + \ + decryptedData[readPosition:readPosition + 64] + readPosition += 64 + if sendersAddressVersion >= 3: + requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += varintLength + print 'sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is', requiredAverageProofOfWorkNonceTrialsPerByte + requiredPayloadLengthExtraBytes, varintLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += varintLength + print 'sender\'s requiredPayloadLengthExtraBytes is', requiredPayloadLengthExtraBytes + endOfPubkeyPosition = readPosition + + sha = hashlib.new('sha512') + sha.update(sendersPubSigningKey + sendersPubEncryptionKey) + ripe = hashlib.new('ripemd160') + ripe.update(sha.digest()) + + if toRipe != ripe.digest(): + print 'The encryption key used to encrypt this message doesn\'t match the keys inbedded in the message itself. Ignoring message.' + return + messageEncodingType, messageEncodingTypeLength = decodeVarint( + decryptedData[readPosition:readPosition + 9]) + if messageEncodingType == 0: + return + readPosition += messageEncodingTypeLength + messageLength, messageLengthLength = decodeVarint( + decryptedData[readPosition:readPosition + 9]) + readPosition += messageLengthLength + message = decryptedData[readPosition:readPosition + messageLength] + readPosition += messageLength + readPositionAtBottomOfMessage = readPosition + signatureLength, signatureLengthLength = decodeVarint( + decryptedData[readPosition:readPosition + 9]) + readPosition += signatureLengthLength + signature = decryptedData[ + readPosition:readPosition + signatureLength] + try: + if not highlevelcrypto.verify(decryptedData[:readPositionAtBottomOfMessage], signature, sendersPubSigningKey.encode('hex')): + print 'ECDSA verify failed' + return + print 'ECDSA verify passed' + except Exception as err: + print 'ECDSA verify failed', err + return + # verify passed + + # Let's store the public key in case we want to reply to this + # person. + t = (ripe.digest(), '\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + decryptedData[ + beginningOfPubkeyPosition:endOfPubkeyPosition], int(time.time()), 'yes') + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + # shared.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. + self.possibleNewPubkey(ripe.digest()) + + fromAddress = encodeAddress( + sendersAddressVersion, sendersStream, ripe.digest()) + shared.printLock.acquire() + print 'fromAddress:', fromAddress + shared.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: + + t = (self.inventoryHash, toAddress, fromAddress, subject, int( + time.time()), body, 'inbox', messageEncodingType, 0) + helper_inbox.insert(t) + + shared.UISignalQueue.put(('displayNewInboxMessage', ( + 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 shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'): + try: + apiNotifyPath = shared.config.get( + 'bitmessagesettings', 'apinotifypath') + except: + apiNotifyPath = '' + if apiNotifyPath != '': + call([apiNotifyPath, "newBroadcast"]) + + # Display timing data + shared.printLock.acquire() + print 'Time spent processing this interesting broadcast:', time.time() - self.messageProcessingStartTime + shared.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()) - shared.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) + shared.inventoryLock.acquire() + if self.inventoryHash in shared.inventory: + print 'We have already received this msg message. Ignoring.' + shared.inventoryLock.release() + return + elif shared.isInSqlInventory(self.inventoryHash): + print 'We have already received this msg message (it is stored on disk in the SQL inventory). Ignoring it.' + shared.inventoryLock.release() + return + # This msg message is valid. Let's let our peers know about it. + objectType = 'msg' + shared.inventory[self.inventoryHash] = ( + objectType, self.streamNumber, data, embeddedTime) + shared.inventoryLock.release() + self.broadcastinv(self.inventoryHash) + shared.UISignalQueue.put(( + 'incrementNumberOfMessagesProcessed', 'no data')) + + 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 and doTimingAttackMitigation: + shared.printLock.acquire() + print 'Timing attack mitigation: Sleeping for', sleepTime, 'seconds.' + shared.printLock.release() + time.sleep(sleepTime) + shared.printLock.acquire() + print 'Total message processing time:', time.time() - self.messageProcessingStartTime, 'seconds.' + shared.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 shared.ackdataForWhichImWatching: + shared.printLock.acquire() + print 'This msg IS an acknowledgement bound for me.' + shared.printLock.release() + del shared.ackdataForWhichImWatching[encryptedData[readPosition:]] + t = ('ackreceived', encryptedData[readPosition:]) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + 'UPDATE sent SET status=? WHERE ackdata=?') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (encryptedData[readPosition:], tr.translateText("MainWindow",'Acknowledgement of the message received. %1').arg(unicode( + time.strftime(shared.config.get('bitmessagesettings', 'timeformat'), time.localtime(int(time.time()))), 'utf-8'))))) + return + else: + shared.printLock.acquire() + print 'This was NOT an acknowledgement bound for me.' + # print 'shared.ackdataForWhichImWatching', shared.ackdataForWhichImWatching + shared.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 shared.myECCryptorObjects.items(): + try: + decryptedData = 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 as err: + pass + # print 'cryptorObject.decrypt Exception:', err + if not initialDecryptionSuccessful: + # This is not a message bound for me. + shared.printLock.acquire() + print 'Length of time program spent failing to decrypt this message:', time.time() - self.messageProcessingStartTime, 'seconds.' + shared.printLock.release() + else: + # This is a message bound for me. + toAddress = shared.myAddressesByHash[ + toRipe] # Look up my address based on the RIPE hash. + readPosition = 0 + messageVersion, messageVersionLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += messageVersionLength + if messageVersion != 1: + print 'Cannot understand message versions other than one. Ignoring message.' + return + sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += sendersAddressVersionNumberLength + if sendersAddressVersionNumber == 0: + print 'Cannot understand sendersAddressVersionNumber = 0. Ignoring message.' + return + if sendersAddressVersionNumber >= 4: + print 'Sender\'s address version number', sendersAddressVersionNumber, 'not yet supported. Ignoring message.' + return + if len(decryptedData) < 170: + print 'Length of the unencrypted data is unreasonably short. Sanity check failed. Ignoring message.' + return + sendersStreamNumber, sendersStreamNumberLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + if sendersStreamNumber == 0: + print 'sender\'s stream number is 0. Ignoring message.' + return + readPosition += sendersStreamNumberLength + behaviorBitfield = decryptedData[readPosition:readPosition + 4] + readPosition += 4 + pubSigningKey = '\x04' + decryptedData[ + readPosition:readPosition + 64] + readPosition += 64 + pubEncryptionKey = '\x04' + decryptedData[ + readPosition:readPosition + 64] + readPosition += 64 + if sendersAddressVersionNumber >= 3: + requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += varintLength + print 'sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is', requiredAverageProofOfWorkNonceTrialsPerByte + requiredPayloadLengthExtraBytes, varintLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += varintLength + print 'sender\'s requiredPayloadLengthExtraBytes is', requiredPayloadLengthExtraBytes + endOfThePublicKeyPosition = readPosition # needed for when we store the pubkey in our database of pubkeys for later use. + if toRipe != decryptedData[readPosition:readPosition + 20]: + shared.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:', decryptedData[readPosition:readPosition + 20].encode('hex') + shared.printLock.release() + return + readPosition += 20 + messageEncodingType, messageEncodingTypeLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += messageEncodingTypeLength + messageLength, messageLengthLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += messageLengthLength + message = decryptedData[readPosition:readPosition + messageLength] + # print 'First 150 characters of message:', repr(message[:150]) + readPosition += messageLength + ackLength, ackLengthLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += ackLengthLength + ackData = decryptedData[readPosition:readPosition + ackLength] + readPosition += ackLength + positionOfBottomOfAckData = readPosition # needed to mark the end of what is covered by the signature + signatureLength, signatureLengthLength = decodeVarint( + decryptedData[readPosition:readPosition + 10]) + readPosition += signatureLengthLength + signature = decryptedData[ + readPosition:readPosition + signatureLength] + try: + if not highlevelcrypto.verify(decryptedData[:positionOfBottomOfAckData], signature, pubSigningKey.encode('hex')): + print 'ECDSA verify failed' + return + print 'ECDSA verify passed' + except Exception as err: + print 'ECDSA verify failed', err + return + shared.printLock.acquire() + print 'As a matter of intellectual curiosity, here is the Bitcoin address associated with the keys owned by the other person:', helper_bitcoin.calculateBitcoinAddressFromPubkey(pubSigningKey), ' ..and here is the testnet address:', helper_bitcoin.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.' + shared.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. + t = (ripe.digest(), '\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + decryptedData[ + messageVersionLength:endOfThePublicKeyPosition], int(time.time()), 'yes') + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + # shared.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. + self.possibleNewPubkey(ripe.digest()) + fromAddress = encodeAddress( + sendersAddressVersionNumber, sendersStreamNumber, ripe.digest()) + # If this message is bound for one of my version 3 addresses (or + # higher), then we must check to make sure it meets our demanded + # proof of work requirement. + if decodeAddress(toAddress)[1] >= 3: # If the toAddress version number is 3 or higher: + if not shared.isAddressInMyAddressBookSubscriptionsListOrWhitelist(fromAddress): # If I'm not friendly with this person: + requiredNonceTrialsPerByte = shared.config.getint( + toAddress, 'noncetrialsperbyte') + requiredPayloadLengthExtraBytes = shared.config.getint( + toAddress, 'payloadlengthextrabytes') + if not self.isProofOfWorkSufficient(encryptedData, requiredNonceTrialsPerByte, requiredPayloadLengthExtraBytes): + print 'Proof of work in msg message insufficient only because it does not meet our higher requirement.' + return + blockMessage = False # Gets set to True if the user shouldn't see the message according to black or white lists. + if shared.config.get('bitmessagesettings', 'blackwhitelist') == 'black': # If we are using a blacklist + t = (fromAddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT label FROM blacklist where address=? and enabled='1' ''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + if queryreturn != []: + shared.printLock.acquire() + print 'Message ignored because address is in blacklist.' + shared.printLock.release() + blockMessage = True + else: # We're using a whitelist + t = (fromAddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT label FROM whitelist where address=? and enabled='1' ''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + if queryreturn == []: + print 'Message ignored because address not in whitelist.' + blockMessage = True + if not blockMessage: + print 'fromAddress:', fromAddress + print 'First 150 characters of message:', repr(message[:150]) + + toLabel = shared.config.get(toAddress, 'label') + if toLabel == '': + toLabel = toAddress + + if messageEncodingType == 2: + bodyPositionIndex = string.find(message, '\nBody:') + if bodyPositionIndex > 1: + subject = message[8:bodyPositionIndex] + subject = subject[ + :500] # Only save and show the first 500 characters of the subject. Any more is probably an attak. + 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: + t = (self.inventoryHash, toAddress, fromAddress, subject, int( + time.time()), body, 'inbox', messageEncodingType, 0) + helper_inbox.insert(t) + + shared.UISignalQueue.put(('displayNewInboxMessage', ( + 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 shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'): + try: + apiNotifyPath = shared.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 shared.safeConfigGetBoolean(toAddress, 'mailinglist'): + try: + mailingListName = shared.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 = time.strftime("%a, %Y-%m-%d %H:%M:%S UTC", time.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 = '' + + t = ('', toAddress, ripe, fromAddress, subject, message, ackdata, int( + time.time()), 'broadcastqueued', 1, 1, 'sent', 2) + helper_sent.insert(t) + + shared.UISignalQueue.put(('displayNewSentMessage', ( + toAddress, '[Broadcast subscribers]', fromAddress, subject, message, ackdata))) + shared.workerQueue.put(('sendbroadcast', '')) + + 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 + shared.successfullyDecryptMessageTimings.append( + timeRequiredToAttemptToDecryptMessage) + sum = 0 + for item in shared.successfullyDecryptMessageTimings: + sum += item + shared.printLock.acquire() + print 'Time to decrypt this message successfully:', timeRequiredToAttemptToDecryptMessage + print 'Average time for all message decryption successes since startup:', sum / len(shared.successfullyDecryptMessageTimings) + shared.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 + + def possibleNewPubkey(self, toRipe): + if toRipe in shared.neededPubkeys: + print 'We have been awaiting the arrival of this pubkey.' + del shared.neededPubkeys[toRipe] + t = (toRipe,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='doingmsgpow' WHERE toripe=? AND (status='awaitingpubkey' or status='doingpubkeypow') and folder='sent' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.workerQueue.put(('sendmessage', '')) + else: + shared.printLock.acquire() + print 'We don\'t need this pub key. We didn\'t ask for it. Pubkey hash:', toRipe.encode('hex') + shared.printLock.release() + + # 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()) - shared.lengthOfTimeToHoldOnToAllPubkeys: + shared.printLock.acquire() + print 'The embedded time in this pubkey message is too old. Ignoring. Embedded time is:', embeddedTime + shared.printLock.release() + return + if embeddedTime > int(time.time()) + 10800: + shared.printLock.acquire() + print 'The embedded time in this pubkey message more than several hours in the future. This is irrational. Ignoring message.' + shared.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) + shared.inventoryLock.acquire() + if inventoryHash in shared.inventory: + print 'We have already received this pubkey. Ignoring it.' + shared.inventoryLock.release() + return + elif shared.isInSqlInventory(inventoryHash): + print 'We have already received this pubkey (it is stored on disk in the SQL inventory). Ignoring it.' + shared.inventoryLock.release() + return + objectType = 'pubkey' + shared.inventory[inventoryHash] = ( + objectType, self.streamNumber, data, embeddedTime) + shared.inventoryLock.release() + self.broadcastinv(inventoryHash) + shared.UISignalQueue.put(( + 'incrementNumberOfPubkeysProcessed', 'no data')) + + self.processpubkey(data) + + lengthOfTimeWeShouldUseToProcessThisMessage = .2 + sleepTime = lengthOfTimeWeShouldUseToProcessThisMessage - \ + (time.time() - self.pubkeyProcessingStartTime) + if sleepTime > 0 and doTimingAttackMitigation: + shared.printLock.acquire() + print 'Timing attack mitigation: Sleeping for', sleepTime, 'seconds.' + shared.printLock.release() + time.sleep(sleepTime) + shared.printLock.acquire() + print 'Total pubkey processing time:', time.time() - self.pubkeyProcessingStartTime, 'seconds.' + shared.printLock.release() + + def processpubkey(self, data): + 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 + + 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 >= 4 or addressVersion == 1: + shared.printLock.acquire() + print 'This version of Bitmessage cannot handle version', addressVersion, 'addresses.' + shared.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() + + shared.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') + shared.printLock.release() + + t = (ripe,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT usedpersonally FROM pubkeys WHERE hash=? AND usedpersonally='yes' ''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.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, data, embeddedTime, 'yes') + else: + print 'We have NOT used this pubkey personally. Inserting in database.' + t = (ripe, data, embeddedTime, 'no') + # This will also update the embeddedTime. + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + # shared.workerQueue.put(('newpubkey',(addressVersion,streamNumber,ripe))) + self.possibleNewPubkey(ripe) + if addressVersion == 3: + if len(data) < 170: # sanity check. + print '(within processpubkey) payloadLength less than 170. Sanity check failed.' + return + bitfieldBehaviors = data[readPosition:readPosition + 4] + readPosition += 4 + publicSigningKey = '\x04' + 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 = '\x04' + data[readPosition:readPosition + 64] + readPosition += 64 + specifiedNonceTrialsPerByte, specifiedNonceTrialsPerByteLength = decodeVarint( + data[readPosition:readPosition + 10]) + readPosition += specifiedNonceTrialsPerByteLength + specifiedPayloadLengthExtraBytes, specifiedPayloadLengthExtraBytesLength = decodeVarint( + data[readPosition:readPosition + 10]) + readPosition += specifiedPayloadLengthExtraBytesLength + endOfSignedDataPosition = readPosition + signatureLength, signatureLengthLength = decodeVarint( + data[readPosition:readPosition + 10]) + readPosition += signatureLengthLength + signature = data[readPosition:readPosition + signatureLength] + try: + if not highlevelcrypto.verify(data[8:endOfSignedDataPosition], signature, publicSigningKey.encode('hex')): + print 'ECDSA verify failed (within processpubkey)' + return + print 'ECDSA verify passed (within processpubkey)' + except Exception as err: + print 'ECDSA verify failed (within processpubkey)', err + return + + sha = hashlib.new('sha512') + sha.update(publicSigningKey + publicEncryptionKey) + ripeHasher = hashlib.new('ripemd160') + ripeHasher.update(sha.digest()) + ripe = ripeHasher.digest() + + shared.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') + shared.printLock.release() + + t = (ripe,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT usedpersonally FROM pubkeys WHERE hash=? AND usedpersonally='yes' ''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.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, data, embeddedTime, 'yes') + else: + print 'We have NOT used this pubkey personally. Inserting in database.' + t = (ripe, data, embeddedTime, 'no') + # This will also update the embeddedTime. + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + # shared.workerQueue.put(('newpubkey',(addressVersion,streamNumber,ripe))) + self.possibleNewPubkey(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()) - shared.maximumAgeOfAnObjectThatIAmWillingToAccept: + print 'The time in this getpubkey message is too old. Ignoring it. Time:', embeddedTime + return + requestedAddressVersionNumber, 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) + shared.inventoryLock.acquire() + if inventoryHash in shared.inventory: + print 'We have already received this getpubkey request. Ignoring it.' + shared.inventoryLock.release() + return + elif shared.isInSqlInventory(inventoryHash): + print 'We have already received this getpubkey request (it is stored on disk in the SQL inventory). Ignoring it.' + shared.inventoryLock.release() + return + + objectType = 'getpubkey' + shared.inventory[inventoryHash] = ( + objectType, self.streamNumber, data, embeddedTime) + shared.inventoryLock.release() + # This getpubkey request is valid so far. Forward to peers. + self.broadcastinv(inventoryHash) + + if requestedAddressVersionNumber == 0: + print 'The requestedAddressVersionNumber of the pubkey request is zero. That doesn\'t make any sense. Ignoring it.' + return + elif requestedAddressVersionNumber == 1: + print 'The requestedAddressVersionNumber of the pubkey request is 1 which isn\'t supported anymore. Ignoring it.' + return + elif requestedAddressVersionNumber > 3: + print 'The requestedAddressVersionNumber 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') + + if requestedHash in shared.myAddressesByHash: # if this address hash is one of mine + if decodeAddress(shared.myAddressesByHash[requestedHash])[1] != requestedAddressVersionNumber: + shared.printLock.acquire() + sys.stderr.write( + '(Within the recgetpubkey function) Someone requested one of my pubkeys but the requestedAddressVersionNumber doesn\'t match my actual address version number. That shouldn\'t have happened. Ignoring.\n') + shared.printLock.release() + return + try: + lastPubkeySendTime = int(shared.config.get( + shared.myAddressesByHash[requestedHash], 'lastpubkeysendtime')) + except: + lastPubkeySendTime = 0 + if lastPubkeySendTime < time.time() - shared.lengthOfTimeToHoldOnToAllPubkeys: # If the last time we sent our pubkey was at least 28 days ago... + shared.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.' + shared.printLock.release() + if requestedAddressVersionNumber == 2: + shared.workerQueue.put(( + 'doPOWForMyV2Pubkey', requestedHash)) + elif requestedAddressVersionNumber == 3: + shared.workerQueue.put(( + 'doPOWForMyV3Pubkey', requestedHash)) + else: + shared.printLock.acquire() + print 'Found getpubkey-requested-hash in my list of EC hashes BUT we already sent it recently. Ignoring request. The lastPubkeySendTime is:', lastPubkeySendTime + shared.printLock.release() + else: + shared.printLock.acquire() + print 'This getpubkey request is not for any of my keys.' + shared.printLock.release() + + # We have received an inv message + def recinv(self, data): + totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = 0 # ..from all peers, counting duplicates seperately (because they take up memory) + if len(shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer) > 0: + for key, value in shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer.items(): + totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave += value + shared.printLock.acquire() + print 'number of keys(hosts) in shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer:', len(shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer) + print 'totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = ', totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave + shared.printLock.release() + numberOfItemsInInv, lengthOfVarint = decodeVarint(data[:10]) + if numberOfItemsInInv > 50000: + sys.stderr.write('Too many items in inv message!') + return + 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. + if totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave > 200000 and len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 1000: # inv flooding attack mitigation + shared.printLock.acquire() + print 'We already have', totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave, 'items yet to retrieve from peers and over 1000 from this node in particular. Ignoring this inv message.' + shared.printLock.release() + return + self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware[ + data[lengthOfVarint:32 + lengthOfVarint]] = 0 + if data[lengthOfVarint:32 + lengthOfVarint] in shared.inventory: + shared.printLock.acquire() + print 'Inventory (in memory) has inventory item already.' + shared.printLock.release() + elif shared.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. + if totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave > 200000 and len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 1000: # inv flooding attack mitigation + shared.printLock.acquire() + print 'We already have', totalNumberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave, 'items yet to retrieve from peers and over', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave), 'from this node in particular. Ignoring the rest of this inv message.' + shared.printLock.release() + break + self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware[data[ + lengthOfVarint + (32 * i):32 + lengthOfVarint + (32 * i)]] = 0 + self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[ + data[lengthOfVarint + (32 * i):32 + lengthOfVarint + (32 * i)]] = 0 + shared.numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[ + self.HOST] = len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) + + # Send a getdata message to our peer to request the object with the given + # hash + def sendgetdata(self, hash): + shared.printLock.acquire() + print 'sending getdata to retrieve object with hash:', hash.encode('hex') + shared.printLock.release() + 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 as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.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)] + shared.printLock.acquire() + print 'received getdata request for item:', hash.encode('hex') + shared.printLock.release() + # print 'inventory is', shared.inventory + if hash in shared.inventory: + objectType, streamNumber, payload, receivedTime = shared.inventory[ + hash] + self.sendData(objectType, payload) + else: + t = (hash,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''select objecttype, payload from inventory where hash=?''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.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): + headerData = '\xe9\xbe\xb4\xd9' # magic bits, slighly different from Bitcoin's magic bits. + if objectType == 'pubkey': + shared.printLock.acquire() + print 'sending pubkey' + shared.printLock.release() + headerData += 'pubkey\x00\x00\x00\x00\x00\x00' + elif objectType == 'getpubkey' or objectType == 'pubkeyrequest': + shared.printLock.acquire() + print 'sending getpubkey' + shared.printLock.release() + headerData += 'getpubkey\x00\x00\x00' + elif objectType == 'msg': + shared.printLock.acquire() + print 'sending msg' + shared.printLock.release() + headerData += 'msg\x00\x00\x00\x00\x00\x00\x00\x00\x00' + elif objectType == 'broadcast': + shared.printLock.acquire() + print 'sending broadcast' + shared.printLock.release() + headerData += 'broadcast\x00\x00\x00' + else: + sys.stderr.write( + 'Error: sendData has been asked to send a strange objectType: %s\n' % str(objectType)) + return + headerData += pack('>L', len(payload)) # payload length. + headerData += hashlib.sha512(payload).digest()[:4] + try: + self.sock.sendall(headerData + payload) + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.printLock.release() + + # Send an inv message with just one hash to all of our peers + def broadcastinv(self, hash): + shared.printLock.acquire() + print 'broadcasting inv with hash:', hash.encode('hex') + shared.printLock.release() + shared.broadcastToSendDataQueues((self.streamNumber, 'sendinv', hash)) + + # We have received an addr message. + def recaddr(self, data): + listOfAddressDetailsToBroadcastToPeers = [] + numberOfAddressesIncluded = 0 + numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint( + data[:10]) + + if shared.verbose >= 1: + shared.printLock.acquire() + print 'addr message contains', numberOfAddressesIncluded, 'IP addresses.' + shared.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': + shared.printLock.acquire() + print 'Skipping IPv6 address.', repr(data[16 + lengthOfNumberOfAddresses + (34 * i):28 + lengthOfNumberOfAddresses + (34 * i)]) + shared.printLock.release() + continue + except Exception as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err)) + shared.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 as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err)) + shared.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 as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err)) + shared.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 as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err)) + shared.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 helper_generic.isHostInPrivateIPRange(hostFromAddrMessage): + 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 shared.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. + shared.knownNodesLock.acquire() + shared.knownNodes[recaddrStream] = {} + shared.knownNodesLock.release() + if hostFromAddrMessage not in shared.knownNodes[recaddrStream]: + if len(shared.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. + shared.knownNodesLock.acquire() + shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( + recaddrPort, timeSomeoneElseReceivedMessageFromThisNode) + shared.knownNodesLock.release() + needToWriteKnownNodesToDisk = True + hostDetails = ( + timeSomeoneElseReceivedMessageFromThisNode, + recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) + listOfAddressDetailsToBroadcastToPeers.append( + hostDetails) + else: + PORT, timeLastReceivedMessageFromThisNode = shared.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())): + shared.knownNodesLock.acquire() + shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( + PORT, timeSomeoneElseReceivedMessageFromThisNode) + shared.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. + shared.knownNodesLock.acquire() + output = open(shared.appdata + 'knownnodes.dat', 'wb') + pickle.dump(shared.knownNodes, output) + output.close() + shared.knownNodesLock.release() + self.broadcastaddr( + listOfAddressDetailsToBroadcastToPeers) # no longer broadcast + shared.printLock.acquire() + print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.' + shared.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': + shared.printLock.acquire() + print 'Skipping IPv6 address.', repr(data[20 + lengthOfNumberOfAddresses + (38 * i):32 + lengthOfNumberOfAddresses + (38 * i)]) + shared.printLock.release() + continue + except Exception as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err)) + shared.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 as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err)) + shared.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 as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err)) + shared.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 as err: + shared.printLock.acquire() + sys.stderr.write( + 'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err)) + shared.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 shared.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. + shared.knownNodesLock.acquire() + shared.knownNodes[recaddrStream] = {} + shared.knownNodesLock.release() + if hostFromAddrMessage not in shared.knownNodes[recaddrStream]: + if len(shared.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. + shared.knownNodesLock.acquire() + shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( + recaddrPort, timeSomeoneElseReceivedMessageFromThisNode) + shared.knownNodesLock.release() + shared.printLock.acquire() + print 'added new node', hostFromAddrMessage, 'to knownNodes in stream', recaddrStream + shared.printLock.release() + needToWriteKnownNodesToDisk = True + hostDetails = ( + timeSomeoneElseReceivedMessageFromThisNode, + recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) + listOfAddressDetailsToBroadcastToPeers.append( + hostDetails) + else: + PORT, timeLastReceivedMessageFromThisNode = shared.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())): + shared.knownNodesLock.acquire() + shared.knownNodes[recaddrStream][hostFromAddrMessage] = ( + PORT, timeSomeoneElseReceivedMessageFromThisNode) + shared.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. + shared.knownNodesLock.acquire() + output = open(shared.appdata + 'knownnodes.dat', 'wb') + pickle.dump(shared.knownNodes, output) + output.close() + shared.knownNodesLock.release() + self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers) + shared.printLock.acquire() + print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.' + shared.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 shared.verbose >= 1: + shared.printLock.acquire() + print 'Broadcasting addr with', numberOfAddressesInAddrMessage, 'entries.' + shared.printLock.release() + shared.broadcastToSendDataQueues(( + self.streamNumber, 'sendaddr', datatosend)) + + # Send a big addr message to our peer + def sendaddr(self): + addrsInMyStream = {} + addrsInChildStreamLeft = {} + addrsInChildStreamRight = {} + # print 'knownNodes', shared.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. + shared.knownNodesLock.acquire() + if len(shared.knownNodes[self.streamNumber]) > 0: + for i in range(500): + random.seed() + HOST, = random.sample(shared.knownNodes[self.streamNumber], 1) + if helper_generic.isHostInPrivateIPRange(HOST): + continue + addrsInMyStream[HOST] = shared.knownNodes[ + self.streamNumber][HOST] + if len(shared.knownNodes[self.streamNumber * 2]) > 0: + for i in range(250): + random.seed() + HOST, = random.sample(shared.knownNodes[ + self.streamNumber * 2], 1) + if helper_generic.isHostInPrivateIPRange(HOST): + continue + addrsInChildStreamLeft[HOST] = shared.knownNodes[ + self.streamNumber * 2][HOST] + if len(shared.knownNodes[(self.streamNumber * 2) + 1]) > 0: + for i in range(250): + random.seed() + HOST, = random.sample(shared.knownNodes[ + (self.streamNumber * 2) + 1], 1) + if helper_generic.isHostInPrivateIPRange(HOST): + continue + addrsInChildStreamRight[HOST] = shared.knownNodes[ + (self.streamNumber * 2) + 1][HOST] + shared.knownNodesLock.release() + numberOfAddressesInAddrMessage = 0 + payload = '' + # print 'addrsInMyStream.items()', addrsInMyStream.items() + for HOST, value in addrsInMyStream.items(): + PORT, timeLastReceivedMessageFromThisNode = value + if timeLastReceivedMessageFromThisNode > (int(time.time()) - shared.maximumAgeOfNodesThatIAdvertiseToOthers): # If it is younger than 3 hours old.. + numberOfAddressesInAddrMessage += 1 + 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()) - shared.maximumAgeOfNodesThatIAdvertiseToOthers): # If it is younger than 3 hours old.. + numberOfAddressesInAddrMessage += 1 + 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()) - shared.maximumAgeOfNodesThatIAdvertiseToOthers): # If it is younger than 3 hours old.. + numberOfAddressesInAddrMessage += 1 + 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 + try: + self.sock.sendall(datatosend) + if shared.verbose >= 1: + shared.printLock.acquire() + print 'Sending addr with', numberOfAddressesInAddrMessage, 'entries.' + shared.printLock.release() + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.printLock.release() + + # 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]) + if self.remoteProtocolVersion <= 1: + shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) + shared.printLock.acquire() + print 'Closing connection to old protocol version 1 node: ', self.HOST + shared.printLock.release() + return + # 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:]) + shared.printLock.acquire() + print 'Remote node useragent:', useragent, ' stream number:', self.streamNumber + shared.printLock.release() + if self.streamNumber != 1: + shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) + shared.printLock.acquire() + print 'Closed connection to', self.HOST, 'because they are interested in stream', self.streamNumber, '.' + shared.printLock.release() + return + shared.connectedHostsList[ + self.HOST] = 1 # We use this data structure to not only keep track of what hosts we are connected to so that we don't try to connect to them again, but also to list the connections count on the Network Status tab. + # If this was an incoming connection, then the sendData thread + # doesn't know the stream. We have to set it. + if not self.initiatedConnection: + shared.broadcastToSendDataQueues(( + 0, 'setStreamNumber', (self.HOST, self.streamNumber))) + if data[72:80] == shared.eightBytesOfRandomDataUsedToDetectConnectionsToSelf: + shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST)) + shared.printLock.acquire() + print 'Closing connection to myself: ', self.HOST + shared.printLock.release() + return + shared.broadcastToSendDataQueues((0, 'setRemoteProtocolVersion', ( + self.HOST, self.remoteProtocolVersion))) + + shared.knownNodesLock.acquire() + shared.knownNodes[self.streamNumber][self.HOST] = ( + self.remoteNodeIncomingPort, int(time.time())) + output = open(shared.appdata + 'knownnodes.dat', 'wb') + pickle.dump(shared.knownNodes, output) + output.close() + shared.knownNodesLock.release() + + self.sendverack() + if self.initiatedConnection == False: + self.sendversion() + + # Sends a version message + def sendversion(self): + shared.printLock.acquire() + print 'Sending version message' + shared.printLock.release() + try: + self.sock.sendall(shared.assembleVersionMessage( + self.HOST, self.PORT, self.streamNumber)) + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.printLock.release() + + # Sends a verack message + def sendverack(self): + shared.printLock.acquire() + print 'Sending verack' + shared.printLock.release() + try: + 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') + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + print 'sock.sendall error:', err + shared.printLock.release() + # cf + # 83 + # e1 + # 35 + self.verackSent = True + if self.verackReceived: + self.connectionFullyEstablished() diff --git a/src/class_sendDataThread.py b/src/class_sendDataThread.py new file mode 100644 index 00000000..c1992067 --- /dev/null +++ b/src/class_sendDataThread.py @@ -0,0 +1,174 @@ +import time +import threading +import shared +import Queue +from struct import unpack, pack +import hashlib +import random +import sys +import socket + +#import bitmessagemain + +# Every connection to a peer has a sendDataThread (and also a +# receiveDataThread). +class sendDataThread(threading.Thread): + + def __init__(self): + threading.Thread.__init__(self) + self.mailbox = Queue.Queue() + shared.sendDataQueues.append(self.mailbox) + shared.printLock.acquire() + print 'The length of sendDataQueues at sendDataThread init is:', len(shared.sendDataQueues) + shared.printLock.release() + self.data = '' + + def setup( + self, + sock, + HOST, + PORT, + streamNumber, + someObjectsOfWhichThisRemoteNodeIsAlreadyAware): + self.sock = sock + self.HOST = HOST + self.PORT = PORT + self.streamNumber = streamNumber + self.remoteProtocolVersion = - \ + 1 # This must be set using setRemoteProtocolVersion command which is sent through the self.mailbox queue. + 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.someObjectsOfWhichThisRemoteNodeIsAlreadyAware = someObjectsOfWhichThisRemoteNodeIsAlreadyAware + shared.printLock.acquire() + print 'The streamNumber of this sendDataThread (ID:', str(id(self)) + ') at setup() is', self.streamNumber + shared.printLock.release() + + def sendVersionMessage(self): + datatosend = shared.assembleVersionMessage( + self.HOST, self.PORT, self.streamNumber) # the IP and port of the remote host, and my streamNumber. + + shared.printLock.acquire() + print 'Sending version packet: ', repr(datatosend) + shared.printLock.release() + try: + self.sock.sendall(datatosend) + except Exception as err: + # if not 'Bad file descriptor' in err: + shared.printLock.acquire() + sys.stderr.write('sock.sendall error: %s\n' % err) + shared.printLock.release() + self.versionSent = 1 + + def run(self): + while True: + deststream, command, data = self.mailbox.get() + # shared.printLock.acquire() + # print 'sendDataThread, destream:', deststream, ', Command:', command, ', ID:',id(self), ', HOST:', self.HOST + # shared.printLock.release() + + if deststream == self.streamNumber or deststream == 0: + if command == 'shutdown': + if data == self.HOST or data == 'all': + shared.printLock.acquire() + print 'sendDataThread (associated with', self.HOST, ') ID:', id(self), 'shutting down now.' + shared.printLock.release() + try: + self.sock.shutdown(socket.SHUT_RDWR) + self.sock.close() + except: + pass + shared.sendDataQueues.remove(self.mailbox) + shared.printLock.acquire() + print 'len of sendDataQueues', len(shared.sendDataQueues) + shared.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: + shared.printLock.acquire() + print 'setting the stream number in the sendData thread (ID:', id(self), ') to', specifiedStreamNumber + shared.printLock.release() + self.streamNumber = specifiedStreamNumber + elif command == 'setRemoteProtocolVersion': + hostInMessage, specifiedRemoteProtocolVersion = data + if hostInMessage == self.HOST: + shared.printLock.acquire() + print 'setting the remote node\'s protocol version in the sendData thread (ID:', id(self), ') to', specifiedRemoteProtocolVersion + shared.printLock.release() + self.remoteProtocolVersion = specifiedRemoteProtocolVersion + elif command == 'sendaddr': + 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' + try: + self.sock.shutdown(socket.SHUT_RDWR) + self.sock.close() + except: + pass + shared.sendDataQueues.remove(self.mailbox) + print 'sendDataThread thread (ID:', str(id(self)) + ') ending now. Was connected to', self.HOST + break + elif command == 'sendinv': + if data not in self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware: + 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' + try: + self.sock.shutdown(socket.SHUT_RDWR) + self.sock.close() + except: + pass + shared.sendDataQueues.remove(self.mailbox) + print 'sendDataThread thread (ID:', str(id(self)) + ') ending now. Was connected to', self.HOST + break + elif command == 'pong': + self.someObjectsOfWhichThisRemoteNodeIsAlreadyAware.clear() # To save memory, let us clear this data structure from time to time. As its function is to help us keep from sending inv messages to peers which sent us the same inv message mere seconds earlier, it will be fine to clear this data structure from time to time. + if self.lastTimeISentData < (int(time.time()) - 298): + # Send out a pong message to keep the connection alive. + shared.printLock.acquire() + print 'Sending pong to', self.HOST, 'to keep connection alive.' + shared.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 'send pong failed' + try: + self.sock.shutdown(socket.SHUT_RDWR) + self.sock.close() + except: + pass + shared.sendDataQueues.remove(self.mailbox) + print 'sendDataThread thread', self, 'ending now. Was connected to', self.HOST + break + else: + shared.printLock.acquire() + print 'sendDataThread ID:', id(self), 'ignoring command', command, 'because the thread is not in stream', deststream + shared.printLock.release() + diff --git a/src/class_singleCleaner.py b/src/class_singleCleaner.py index 999cda26..5b77fdd4 100644 --- a/src/class_singleCleaner.py +++ b/src/class_singleCleaner.py @@ -1,7 +1,7 @@ import threading import shared import time -from bitmessagemain import lengthOfTimeToLeaveObjectsInInventory, lengthOfTimeToHoldOnToAllPubkeys, maximumAgeOfAnObjectThatIAmWillingToAccept, maximumAgeOfObjectsThatIAdvertiseToOthers, maximumAgeOfNodesThatIAdvertiseToOthers +import sys '''The singleCleaner class is a timer-driven thread that cleans data structures to free memory, resends messages when a remote node doesn't respond, and sends pong messages to keep connections alive if the network isn't busy. It cleans these data structures in memory: @@ -56,15 +56,15 @@ class singleCleaner(threading.Thread): shared.sqlLock.acquire() # inventory (clears pubkeys after 28 days and everything else # after 2 days and 12 hours) - t = (int(time.time()) - lengthOfTimeToLeaveObjectsInInventory, int( - time.time()) - lengthOfTimeToHoldOnToAllPubkeys) + t = (int(time.time()) - shared.lengthOfTimeToLeaveObjectsInInventory, int( + time.time()) - shared.lengthOfTimeToHoldOnToAllPubkeys) shared.sqlSubmitQueue.put( '''DELETE FROM inventory WHERE (receivedtime'pubkey') OR (receivedtime (maximumAgeOfAnObjectThatIAmWillingToAccept * (2 ** (pubkeyretrynumber))): + if int(time.time()) - lastactiontime > (shared.maximumAgeOfAnObjectThatIAmWillingToAccept * (2 ** (pubkeyretrynumber))): print 'It has been a long time and we haven\'t heard a response to our getpubkey request. Sending again.' try: - del neededPubkeys[ - toripe] # We need to take this entry out of the neededPubkeys structure because the shared.workerQueue checks to see whether the entry is already present and will not do the POW and send the message because it assumes that it has already done it recently. + del shared.neededPubkeys[ + toripe] # We need to take this entry out of the shared.neededPubkeys structure because the shared.workerQueue checks to see whether the entry is already present and will not do the POW and send the message because it assumes that it has already done it recently. except: pass @@ -105,7 +105,7 @@ class singleCleaner(threading.Thread): shared.sqlSubmitQueue.put('commit') shared.workerQueue.put(('sendmessage', '')) else: # status == msgsent - if int(time.time()) - lastactiontime > (maximumAgeOfAnObjectThatIAmWillingToAccept * (2 ** (msgretrynumber))): + if int(time.time()) - lastactiontime > (shared.maximumAgeOfAnObjectThatIAmWillingToAccept * (2 ** (msgretrynumber))): print 'It has been a long time and we haven\'t heard an acknowledgement to our msg. Sending again.' t = (int( time.time()), msgretrynumber + 1, 'msgqueued', ackdata) diff --git a/src/class_singleListener.py b/src/class_singleListener.py new file mode 100644 index 00000000..fff351bf --- /dev/null +++ b/src/class_singleListener.py @@ -0,0 +1,81 @@ +import threading +import shared +import socket +from class_sendDataThread import * +from class_receiveDataThread import * + +# 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(threading.Thread): + + def __init__(self): + threading.Thread.__init__(self) + + def setup(self, selfInitiatedConnections): + self.selfInitiatedConnections = selfInitiatedConnections + + 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 shared.config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS': + time.sleep(300) + + shared.printLock.acquire() + print 'Listening for incoming connections.' + shared.printLock.release() + HOST = '' # Symbolic name meaning all available interfaces + PORT = shared.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 shared.config.get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS': + time.sleep(10) + while len(shared.connectedHostsList) > 220: + shared.printLock.acquire() + print 'We are connected to too many people. Not accepting further incoming connections for ten seconds.' + shared.printLock.release() + time.sleep(10) + a, (HOST, PORT) = sock.accept() + + # The following code will, unfortunately, block an incoming + # connection if someone else on the same LAN is already connected + # because the two computers will share the same external IP. This + # is here to prevent connection flooding. + while HOST in shared.connectedHostsList: + shared.printLock.acquire() + print 'We are already connected to', HOST + '. Ignoring connection.' + shared.printLock.release() + a.close() + a, (HOST, PORT) = sock.accept() + someObjectsOfWhichThisRemoteNodeIsAlreadyAware = {} # This is not necessairly a complete list; we clear it from time to time to save memory. + a.settimeout(20) + + sd = sendDataThread() + sd.setup( + a, HOST, PORT, -1, someObjectsOfWhichThisRemoteNodeIsAlreadyAware) + sd.start() + + rd = receiveDataThread() + rd.daemon = True # close the main program even if there are threads left + rd.setup( + a, HOST, PORT, -1, someObjectsOfWhichThisRemoteNodeIsAlreadyAware, self.selfInitiatedConnections) + rd.start() + + shared.printLock.acquire() + print self, 'connected to', HOST, 'during INCOMING request.' + shared.printLock.release() diff --git a/src/class_singleWorker.py b/src/class_singleWorker.py new file mode 100644 index 00000000..13cceb9e --- /dev/null +++ b/src/class_singleWorker.py @@ -0,0 +1,860 @@ +import threading +import shared +import time +from time import strftime, localtime, gmtime +import random +from addresses import * +import highlevelcrypto +import proofofwork +import sys +from class_addressGenerator import pointMult +import tr + +# This thread, of which there is only one, does the heavy lifting: +# calculating POWs. + + +class singleWorker(threading.Thread): + + def __init__(self): + # QThread.__init__(self, parent) + threading.Thread.__init__(self) + + def run(self): + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT toripe FROM sent WHERE ((status='awaitingpubkey' OR status='doingpubkeypow') AND folder='sent')''') + shared.sqlSubmitQueue.put('') + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + for row in queryreturn: + toripe, = row + shared.neededPubkeys[toripe] = 0 + + # Initialize the shared.ackdataForWhichImWatching data structure using data + # from the sql database. + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT ackdata FROM sent where (status='msgsent' OR status='doingmsgpow')''') + shared.sqlSubmitQueue.put('') + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + for row in queryreturn: + ackdata, = row + print 'Watching for ackdata', ackdata.encode('hex') + shared.ackdataForWhichImWatching[ackdata] = 0 + + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT DISTINCT toaddress FROM sent WHERE (status='doingpubkeypow' AND folder='sent')''') + shared.sqlSubmitQueue.put('') + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + for row in queryreturn: + toaddress, = row + self.requestPubKey(toaddress) + + time.sleep( + 10) # give some time for the GUI to start before we start on existing POW tasks. + + self.sendMsg() + # just in case there are any pending tasks for msg + # messages that have yet to be sent. + self.sendBroadcast() + # just in case there are any tasks for Broadcasts + # that have yet to be sent. + + while True: + command, data = shared.workerQueue.get() + if command == 'sendmessage': + self.sendMsg() + elif command == 'sendbroadcast': + self.sendBroadcast() + elif command == 'doPOWForMyV2Pubkey': + self.doPOWForMyV2Pubkey(data) + elif command == 'doPOWForMyV3Pubkey': + self.doPOWForMyV3Pubkey(data) + """elif command == 'newpubkey': + toAddressVersion,toStreamNumber,toRipe = data + if toRipe in shared.neededPubkeys: + print 'We have been awaiting the arrival of this pubkey.' + del shared.neededPubkeys[toRipe] + t = (toRipe,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put('''UPDATE sent SET status='doingmsgpow' WHERE toripe=? AND status='awaitingpubkey' and folder='sent' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + self.sendMsg() + else: + shared.printLock.acquire() + print 'We don\'t need this pub key. We didn\'t ask for it. Pubkey hash:', toRipe.encode('hex') + shared.printLock.release()""" + else: + shared.printLock.acquire() + sys.stderr.write( + 'Probable programming error: The command sent to the workerThread is weird. It is: %s\n' % command) + shared.printLock.release() + shared.workerQueue.task_done() + + def doPOWForMyV2Pubkey(self, hash): # This function also broadcasts out the pubkey message once it is done with the POW + # Look up my stream number based on my address hash + """configSections = shared.config.sections() + for addressInKeysFile in configSections: + if addressInKeysFile <> 'bitmessagesettings': + status,addressVersionNumber,streamNumber,hashFromThisParticularAddress = decodeAddress(addressInKeysFile) + if hash == hashFromThisParticularAddress: + myAddress = addressInKeysFile + break""" + myAddress = shared.myAddressesByHash[hash] + status, addressVersionNumber, streamNumber, hash = decodeAddress( + myAddress) + embeddedTime = int(time.time() + random.randrange( + -300, 300)) # the current time plus or minus five minutes + payload = pack('>I', (embeddedTime)) + payload += encodeVarint(addressVersionNumber) # Address version number + payload += encodeVarint(streamNumber) + payload += '\x00\x00\x00\x01' # bitfield of features supported by me (see the wiki). + + try: + privSigningKeyBase58 = shared.config.get( + myAddress, 'privsigningkey') + privEncryptionKeyBase58 = shared.config.get( + myAddress, 'privencryptionkey') + except Exception as err: + shared.printLock.acquire() + sys.stderr.write( + 'Error within doPOWForMyV2Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err) + shared.printLock.release() + return + + privSigningKeyHex = shared.decodeWalletImportFormat( + privSigningKeyBase58).encode('hex') + privEncryptionKeyHex = shared.decodeWalletImportFormat( + privEncryptionKeyBase58).encode('hex') + pubSigningKey = highlevelcrypto.privToPub( + privSigningKeyHex).decode('hex') + pubEncryptionKey = highlevelcrypto.privToPub( + privEncryptionKeyHex).decode('hex') + + payload += pubSigningKey[1:] + payload += pubEncryptionKey[1:] + + # Do the POW for this pubkey message + target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) + print '(For pubkey message) Doing proof of work...' + initialHash = hashlib.sha512(payload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + print '(For pubkey message) Found proof of work', trialValue, 'Nonce:', nonce + payload = pack('>Q', nonce) + payload + """t = (hash,payload,embeddedTime,'no') + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release()""" + + inventoryHash = calculateInventoryHash(payload) + objectType = 'pubkey' + shared.inventory[inventoryHash] = ( + objectType, streamNumber, payload, embeddedTime) + + shared.printLock.acquire() + print 'broadcasting inv with hash:', inventoryHash.encode('hex') + shared.printLock.release() + shared.broadcastToSendDataQueues(( + streamNumber, 'sendinv', inventoryHash)) + shared.UISignalQueue.put(('updateStatusBar', '')) + shared.config.set( + myAddress, 'lastpubkeysendtime', str(int(time.time()))) + with open(shared.appdata + 'keys.dat', 'wb') as configfile: + shared.config.write(configfile) + + def doPOWForMyV3Pubkey(self, hash): # This function also broadcasts out the pubkey message once it is done with the POW + myAddress = shared.myAddressesByHash[hash] + status, addressVersionNumber, streamNumber, hash = decodeAddress( + myAddress) + embeddedTime = int(time.time() + random.randrange( + -300, 300)) # the current time plus or minus five minutes + payload = pack('>I', (embeddedTime)) + payload += encodeVarint(addressVersionNumber) # Address version number + payload += encodeVarint(streamNumber) + payload += '\x00\x00\x00\x01' # bitfield of features supported by me (see the wiki). + + try: + privSigningKeyBase58 = shared.config.get( + myAddress, 'privsigningkey') + privEncryptionKeyBase58 = shared.config.get( + myAddress, 'privencryptionkey') + except Exception as err: + shared.printLock.acquire() + sys.stderr.write( + 'Error within doPOWForMyV3Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err) + shared.printLock.release() + return + + privSigningKeyHex = shared.decodeWalletImportFormat( + privSigningKeyBase58).encode('hex') + privEncryptionKeyHex = shared.decodeWalletImportFormat( + privEncryptionKeyBase58).encode('hex') + pubSigningKey = highlevelcrypto.privToPub( + privSigningKeyHex).decode('hex') + pubEncryptionKey = highlevelcrypto.privToPub( + privEncryptionKeyHex).decode('hex') + + payload += pubSigningKey[1:] + payload += pubEncryptionKey[1:] + + payload += encodeVarint(shared.config.getint( + myAddress, 'noncetrialsperbyte')) + payload += encodeVarint(shared.config.getint( + myAddress, 'payloadlengthextrabytes')) + signature = highlevelcrypto.sign(payload, privSigningKeyHex) + payload += encodeVarint(len(signature)) + payload += signature + + # Do the POW for this pubkey message + target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) + print '(For pubkey message) Doing proof of work...' + initialHash = hashlib.sha512(payload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + print '(For pubkey message) Found proof of work', trialValue, 'Nonce:', nonce + + payload = pack('>Q', nonce) + payload + """t = (hash,payload,embeddedTime,'no') + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put('''INSERT INTO pubkeys VALUES (?,?,?,?)''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release()""" + + inventoryHash = calculateInventoryHash(payload) + objectType = 'pubkey' + shared.inventory[inventoryHash] = ( + objectType, streamNumber, payload, embeddedTime) + + shared.printLock.acquire() + print 'broadcasting inv with hash:', inventoryHash.encode('hex') + shared.printLock.release() + shared.broadcastToSendDataQueues(( + streamNumber, 'sendinv', inventoryHash)) + shared.UISignalQueue.put(('updateStatusBar', '')) + shared.config.set( + myAddress, 'lastpubkeysendtime', str(int(time.time()))) + with open(shared.appdata + 'keys.dat', 'wb') as configfile: + shared.config.write(configfile) + + def sendBroadcast(self): + shared.sqlLock.acquire() + t = ('broadcastqueued',) + shared.sqlSubmitQueue.put( + '''SELECT fromaddress, subject, message, ackdata FROM sent WHERE status=? and folder='sent' ''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + for row in queryreturn: + fromaddress, subject, body, ackdata = row + status, addressVersionNumber, streamNumber, ripe = decodeAddress( + fromaddress) + """if addressVersionNumber == 2 and int(time.time()) < shared.encryptedBroadcastSwitchoverTime: + # We need to convert our private keys to public keys in order + # to include them. + try: + privSigningKeyBase58 = shared.config.get( + fromaddress, 'privsigningkey') + privEncryptionKeyBase58 = shared.config.get( + fromaddress, 'privencryptionkey') + except: + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) + continue + + privSigningKeyHex = shared.decodeWalletImportFormat( + privSigningKeyBase58).encode('hex') + privEncryptionKeyHex = shared.decodeWalletImportFormat( + privEncryptionKeyBase58).encode('hex') + + pubSigningKey = highlevelcrypto.privToPub(privSigningKeyHex).decode( + 'hex') # At this time these pubkeys are 65 bytes long because they include the encoding byte which we won't be sending in the broadcast message. + pubEncryptionKey = highlevelcrypto.privToPub( + privEncryptionKeyHex).decode('hex') + + payload = pack('>Q', (int(time.time()) + random.randrange( + -300, 300))) # the current time plus or minus five minutes + payload += encodeVarint(1) # broadcast version + payload += encodeVarint(addressVersionNumber) + payload += encodeVarint(streamNumber) + payload += '\x00\x00\x00\x01' # behavior bitfield + payload += pubSigningKey[1:] + payload += pubEncryptionKey[1:] + payload += ripe + payload += '\x02' # message encoding type + payload += encodeVarint(len( + 'Subject:' + subject + '\n' + 'Body:' + body)) # Type 2 is simple UTF-8 message encoding. + payload += 'Subject:' + subject + '\n' + 'Body:' + body + + signature = highlevelcrypto.sign(payload, privSigningKeyHex) + payload += encodeVarint(len(signature)) + payload += signature + + target = 2 ** 64 / ((len( + payload) + shared.networkDefaultPayloadLengthExtraBytes + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) + print '(For broadcast message) Doing proof of work...' + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Doing work necessary to send broadcast...")))) + initialHash = hashlib.sha512(payload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + print '(For broadcast message) Found proof of work', trialValue, 'Nonce:', nonce + + payload = pack('>Q', nonce) + payload + + inventoryHash = calculateInventoryHash(payload) + objectType = 'broadcast' + shared.inventory[inventoryHash] = ( + objectType, streamNumber, payload, int(time.time())) + print 'Broadcasting inv for my broadcast (within sendBroadcast function):', inventoryHash.encode('hex') + shared.broadcastToSendDataQueues(( + streamNumber, 'sendinv', inventoryHash)) + + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Broadcast sent on %1").arg(unicode( + strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) + + # Update the status of the message in the 'sent' table to have + # a 'broadcastsent' status + shared.sqlLock.acquire() + t = ('broadcastsent', int( + time.time()), fromaddress, subject, body, 'broadcastqueued') + shared.sqlSubmitQueue.put( + 'UPDATE sent SET status=?, lastactiontime=? WHERE fromaddress=? AND subject=? AND message=? AND status=?') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release()""" + if addressVersionNumber == 2 or addressVersionNumber == 3: + # We need to convert our private keys to public keys in order + # to include them. + try: + privSigningKeyBase58 = shared.config.get( + fromaddress, 'privsigningkey') + privEncryptionKeyBase58 = shared.config.get( + fromaddress, 'privencryptionkey') + except: + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) + continue + + privSigningKeyHex = shared.decodeWalletImportFormat( + privSigningKeyBase58).encode('hex') + privEncryptionKeyHex = shared.decodeWalletImportFormat( + privEncryptionKeyBase58).encode('hex') + + pubSigningKey = highlevelcrypto.privToPub(privSigningKeyHex).decode( + 'hex') # At this time these pubkeys are 65 bytes long because they include the encoding byte which we won't be sending in the broadcast message. + pubEncryptionKey = highlevelcrypto.privToPub( + privEncryptionKeyHex).decode('hex') + + payload = pack('>Q', (int(time.time()) + random.randrange( + -300, 300))) # the current time plus or minus five minutes + payload += encodeVarint(2) # broadcast version + payload += encodeVarint(streamNumber) + + dataToEncrypt = encodeVarint(2) # broadcast version + dataToEncrypt += encodeVarint(addressVersionNumber) + dataToEncrypt += encodeVarint(streamNumber) + dataToEncrypt += '\x00\x00\x00\x01' # behavior bitfield + dataToEncrypt += pubSigningKey[1:] + dataToEncrypt += pubEncryptionKey[1:] + if addressVersionNumber >= 3: + dataToEncrypt += encodeVarint(shared.config.getint(fromaddress,'noncetrialsperbyte')) + dataToEncrypt += encodeVarint(shared.config.getint(fromaddress,'payloadlengthextrabytes')) + dataToEncrypt += '\x02' # message encoding type + dataToEncrypt += encodeVarint(len('Subject:' + subject + '\n' + 'Body:' + body)) #Type 2 is simple UTF-8 message encoding per the documentation on the wiki. + dataToEncrypt += 'Subject:' + subject + '\n' + 'Body:' + body + signature = highlevelcrypto.sign( + dataToEncrypt, privSigningKeyHex) + dataToEncrypt += encodeVarint(len(signature)) + dataToEncrypt += signature + + # Encrypt the broadcast with the information contained in the broadcaster's address. Anyone who knows the address can generate + # the private encryption key to decrypt the broadcast. This provides virtually no privacy; its purpose is to keep questionable + # and illegal content from flowing through the Internet connections and being stored on the disk of 3rd parties. + privEncryptionKey = hashlib.sha512(encodeVarint( + addressVersionNumber) + encodeVarint(streamNumber) + ripe).digest()[:32] + pubEncryptionKey = pointMult(privEncryptionKey) + payload += highlevelcrypto.encrypt( + dataToEncrypt, pubEncryptionKey.encode('hex')) + + target = 2 ** 64 / ((len( + payload) + shared.networkDefaultPayloadLengthExtraBytes + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) + print '(For broadcast message) Doing proof of work...' + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Doing work necessary to send broadcast...")))) + initialHash = hashlib.sha512(payload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + print '(For broadcast message) Found proof of work', trialValue, 'Nonce:', nonce + + payload = pack('>Q', nonce) + payload + + inventoryHash = calculateInventoryHash(payload) + objectType = 'broadcast' + shared.inventory[inventoryHash] = ( + objectType, streamNumber, payload, int(time.time())) + print 'sending inv (within sendBroadcast function)' + shared.broadcastToSendDataQueues(( + streamNumber, 'sendinv', inventoryHash)) + + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Broadcast sent on %1").arg(unicode( + strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) + + # Update the status of the message in the 'sent' table to have + # a 'broadcastsent' status + shared.sqlLock.acquire() + t = ('broadcastsent', int( + time.time()), fromaddress, subject, body, 'broadcastqueued') + shared.sqlSubmitQueue.put( + 'UPDATE sent SET status=?, lastactiontime=? WHERE fromaddress=? AND subject=? AND message=? AND status=?') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + else: + shared.printLock.acquire() + sys.stderr.write( + 'Error: In the singleWorker thread, the sendBroadcast function doesn\'t understand the address version.\n') + shared.printLock.release() + + def sendMsg(self): + # Check to see if there are any messages queued to be sent + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT DISTINCT toaddress FROM sent WHERE (status='msgqueued' AND folder='sent')''') + shared.sqlSubmitQueue.put('') + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + for row in queryreturn: # For each address to which we need to send a message, check to see if we have its pubkey already. + toaddress, = row + toripe = decodeAddress(toaddress)[3] + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT hash FROM pubkeys WHERE hash=? ''') + shared.sqlSubmitQueue.put((toripe,)) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + if queryreturn != []: # If we have the needed pubkey, set the status to doingmsgpow (we'll do it further down) + t = (toaddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='doingmsgpow' WHERE toaddress=? AND status='msgqueued' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + else: # We don't have the needed pubkey. Set the status to 'awaitingpubkey' and request it if we haven't already + if toripe in shared.neededPubkeys: + # We already sent a request for the pubkey + t = (toaddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='awaitingpubkey' WHERE toaddress=? AND status='msgqueued' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.UISignalQueue.put(('updateSentItemStatusByHash', ( + toripe, tr.translateText("MainWindow",'Encryption key was requested earlier.')))) + else: + # We have not yet sent a request for the pubkey + t = (toaddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='doingpubkeypow' WHERE toaddress=? AND status='msgqueued' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.UISignalQueue.put(('updateSentItemStatusByHash', ( + toripe, tr.translateText("MainWindow",'Sending a request for the recipient\'s encryption key.')))) + self.requestPubKey(toaddress) + shared.sqlLock.acquire() + # Get all messages that are ready to be sent, and also all messages + # which we have sent in the last 28 days which were previously marked + # as 'toodifficult'. If the user as raised the maximum acceptable + # difficulty then those messages may now be sendable. + shared.sqlSubmitQueue.put( + '''SELECT toaddress, toripe, fromaddress, subject, message, ackdata, status FROM sent WHERE (status='doingmsgpow' or status='forcepow' or (status='toodifficult' and lastactiontime>?)) and folder='sent' ''') + shared.sqlSubmitQueue.put((int(time.time()) - 2419200,)) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + for row in queryreturn: # For each message we need to send.. + toaddress, toripe, fromaddress, subject, message, ackdata, status = row + # There is a remote possibility that we may no longer have the + # recipient's pubkey. Let us make sure we still have it or else the + # sendMsg function will appear to freeze. This can happen if the + # user sends a message but doesn't let the POW function finish, + # then leaves their client off for a long time which could cause + # the needed pubkey to expire and be deleted. + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''SELECT hash FROM pubkeys WHERE hash=? ''') + shared.sqlSubmitQueue.put((toripe,)) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + if queryreturn == [] and toripe not in shared.neededPubkeys: + # We no longer have the needed pubkey and we haven't requested + # it. + shared.printLock.acquire() + sys.stderr.write( + 'For some reason, the status of a message in our outbox is \'doingmsgpow\' even though we lack the pubkey. Here is the RIPE hash of the needed pubkey: %s\n' % toripe.encode('hex')) + shared.printLock.release() + t = (toaddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='msgqueued' WHERE toaddress=? AND status='doingmsgpow' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.UISignalQueue.put(('updateSentItemStatusByHash', ( + toripe, tr.translateText("MainWindow",'Sending a request for the recipient\'s encryption key.')))) + self.requestPubKey(toaddress) + continue + shared.ackdataForWhichImWatching[ackdata] = 0 + toStatus, toAddressVersionNumber, toStreamNumber, toHash = decodeAddress( + toaddress) + fromStatus, fromAddressVersionNumber, fromStreamNumber, fromHash = decodeAddress( + fromaddress) + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Looking up the receiver\'s public key")))) + shared.printLock.acquire() + print 'Found a message in our database that needs to be sent with this pubkey.' + print 'First 150 characters of message:', repr(message[:150]) + shared.printLock.release() + + # mark the pubkey as 'usedpersonally' so that we don't ever delete + # it. + shared.sqlLock.acquire() + t = (toripe,) + shared.sqlSubmitQueue.put( + '''UPDATE pubkeys SET usedpersonally='yes' WHERE hash=?''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + # Let us fetch the recipient's public key out of our database. If + # the required proof of work difficulty is too hard then we'll + # abort. + shared.sqlSubmitQueue.put( + 'SELECT transmitdata FROM pubkeys WHERE hash=?') + shared.sqlSubmitQueue.put((toripe,)) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + if queryreturn == []: + shared.printLock.acquire() + sys.stderr.write( + '(within sendMsg) The needed pubkey was not found. This should never happen. Aborting send.\n') + shared.printLock.release() + return + for row in queryreturn: + pubkeyPayload, = row + + # The pubkey message is stored the way we originally received it + # which means that we need to read beyond things like the nonce and + # time to get to the actual public keys. + readPosition = 8 # to bypass the nonce + pubkeyEmbeddedTime, = unpack( + '>I', pubkeyPayload[readPosition:readPosition + 4]) + # This section is used for the transition from 32 bit time to 64 + # bit time in the protocol. + if pubkeyEmbeddedTime == 0: + pubkeyEmbeddedTime, = unpack( + '>Q', pubkeyPayload[readPosition:readPosition + 8]) + readPosition += 8 + else: + readPosition += 4 + readPosition += 1 # to bypass the address version whose length is definitely 1 + streamNumber, streamNumberLength = decodeVarint( + pubkeyPayload[readPosition:readPosition + 10]) + readPosition += streamNumberLength + behaviorBitfield = pubkeyPayload[readPosition:readPosition + 4] + readPosition += 4 # to bypass the bitfield of behaviors + # pubSigningKeyBase256 = + # pubkeyPayload[readPosition:readPosition+64] #We don't use this + # key for anything here. + readPosition += 64 + pubEncryptionKeyBase256 = pubkeyPayload[ + readPosition:readPosition + 64] + readPosition += 64 + if toAddressVersionNumber == 2: + requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte + requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Doing work necessary to send message.\nThere is no required difficulty for version 2 addresses like this.")))) + elif toAddressVersionNumber == 3: + requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint( + pubkeyPayload[readPosition:readPosition + 10]) + readPosition += varintLength + requiredPayloadLengthExtraBytes, varintLength = decodeVarint( + pubkeyPayload[readPosition:readPosition + 10]) + readPosition += varintLength + if requiredAverageProofOfWorkNonceTrialsPerByte < shared.networkDefaultProofOfWorkNonceTrialsPerByte: # We still have to meet a minimum POW difficulty regardless of what they say is allowed in order to get our message to propagate through the network. + requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte + if requiredPayloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes: + requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Doing work necessary to send message.\nReceiver\'s required difficulty: %1 and %2").arg(str(float( + requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes))))) + if status != 'forcepow': + if (requiredAverageProofOfWorkNonceTrialsPerByte > shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') and shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') != 0) or (requiredPayloadLengthExtraBytes > shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') and shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') != 0): + # The demanded difficulty is more than we are willing + # to do. + shared.sqlLock.acquire() + t = (ackdata,) + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='toodifficult' WHERE ackdata=? ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Problem: The work demanded by the recipient (%1 and %2) is more difficult than you are willing to do.").arg(str(float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float( + requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes)).arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) + continue + + embeddedTime = pack('>Q', (int(time.time()) + random.randrange( + -300, 300))) # the current time plus or minus five minutes. We will use this time both for our message and for the ackdata packed within our message. + if fromAddressVersionNumber == 2: + payload = '\x01' # Message version. + payload += encodeVarint(fromAddressVersionNumber) + payload += encodeVarint(fromStreamNumber) + payload += '\x00\x00\x00\x01' # Bitfield of features and behaviors that can be expected from me. (See https://bitmessage.org/wiki/Protocol_specification#Pubkey_bitfield_features ) + + # We need to convert our private keys to public keys in order + # to include them. + try: + privSigningKeyBase58 = shared.config.get( + fromaddress, 'privsigningkey') + privEncryptionKeyBase58 = shared.config.get( + fromaddress, 'privencryptionkey') + except: + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) + continue + + privSigningKeyHex = shared.decodeWalletImportFormat( + privSigningKeyBase58).encode('hex') + privEncryptionKeyHex = shared.decodeWalletImportFormat( + privEncryptionKeyBase58).encode('hex') + + pubSigningKey = highlevelcrypto.privToPub( + privSigningKeyHex).decode('hex') + pubEncryptionKey = highlevelcrypto.privToPub( + privEncryptionKeyHex).decode('hex') + + payload += pubSigningKey[ + 1:] # The \x04 on the beginning of the public keys are not sent. This way there is only one acceptable way to encode and send a public key. + payload += pubEncryptionKey[1:] + + payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack. + payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki. + messageToTransmit = 'Subject:' + \ + subject + '\n' + 'Body:' + message + payload += encodeVarint(len(messageToTransmit)) + payload += messageToTransmit + fullAckPayload = self.generateFullAckMessage( + ackdata, toStreamNumber, embeddedTime) # The fullAckPayload is a normal msg protocol message with the proof of work already completed that the receiver of this message can easily send out. + payload += encodeVarint(len(fullAckPayload)) + payload += fullAckPayload + signature = highlevelcrypto.sign(payload, privSigningKeyHex) + payload += encodeVarint(len(signature)) + payload += signature + + if fromAddressVersionNumber == 3: + payload = '\x01' # Message version. + payload += encodeVarint(fromAddressVersionNumber) + payload += encodeVarint(fromStreamNumber) + payload += '\x00\x00\x00\x01' # Bitfield of features and behaviors that can be expected from me. (See https://bitmessage.org/wiki/Protocol_specification#Pubkey_bitfield_features ) + + # We need to convert our private keys to public keys in order + # to include them. + try: + privSigningKeyBase58 = shared.config.get( + fromaddress, 'privsigningkey') + privEncryptionKeyBase58 = shared.config.get( + fromaddress, 'privencryptionkey') + except: + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', ( + ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file.")))) + continue + + privSigningKeyHex = shared.decodeWalletImportFormat( + privSigningKeyBase58).encode('hex') + privEncryptionKeyHex = shared.decodeWalletImportFormat( + privEncryptionKeyBase58).encode('hex') + + pubSigningKey = highlevelcrypto.privToPub( + privSigningKeyHex).decode('hex') + pubEncryptionKey = highlevelcrypto.privToPub( + privEncryptionKeyHex).decode('hex') + + payload += pubSigningKey[ + 1:] # The \x04 on the beginning of the public keys are not sent. This way there is only one acceptable way to encode and send a public key. + payload += pubEncryptionKey[1:] + # If the receiver of our message is in our address book, + # subscriptions list, or whitelist then we will allow them to + # do the network-minimum proof of work. Let us check to see if + # the receiver is in any of those lists. + if shared.isAddressInMyAddressBookSubscriptionsListOrWhitelist(toaddress): + payload += encodeVarint( + shared.networkDefaultProofOfWorkNonceTrialsPerByte) + payload += encodeVarint( + shared.networkDefaultPayloadLengthExtraBytes) + else: + payload += encodeVarint(shared.config.getint( + fromaddress, 'noncetrialsperbyte')) + payload += encodeVarint(shared.config.getint( + fromaddress, 'payloadlengthextrabytes')) + + payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack. + payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki. + messageToTransmit = 'Subject:' + \ + subject + '\n' + 'Body:' + message + payload += encodeVarint(len(messageToTransmit)) + payload += messageToTransmit + fullAckPayload = self.generateFullAckMessage( + ackdata, toStreamNumber, embeddedTime) # The fullAckPayload is a normal msg protocol message with the proof of work already completed that the receiver of this message can easily send out. + payload += encodeVarint(len(fullAckPayload)) + payload += fullAckPayload + signature = highlevelcrypto.sign(payload, privSigningKeyHex) + payload += encodeVarint(len(signature)) + payload += signature + + + # We have assembled the data that will be encrypted. + try: + encrypted = highlevelcrypto.encrypt(payload,"04"+pubEncryptionKeyBase256.encode('hex')) + except: + shared.sqlLock.acquire() + t = (ackdata,) + shared.sqlSubmitQueue.put('''UPDATE sent SET status='badkey' WHERE ackdata=?''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr.translateText("MainWindow",'Problem: The recipient\'s encryption key is no good. Could not encrypt message. %1').arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'),localtime(int(time.time()))),'utf-8'))))) + continue + encryptedPayload = embeddedTime + encodeVarint(toStreamNumber) + encrypted + target = 2**64 / ((len(encryptedPayload)+requiredPayloadLengthExtraBytes+8) * requiredAverageProofOfWorkNonceTrialsPerByte) + shared.printLock.acquire() + print '(For msg message) Doing proof of work. Total required difficulty:', float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte, 'Required small message difficulty:', float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes + shared.printLock.release() + powStartTime = time.time() + initialHash = hashlib.sha512(encryptedPayload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + shared.printLock.acquire() + print '(For msg message) Found proof of work', trialValue, 'Nonce:', nonce + try: + print 'POW took', int(time.time() - powStartTime), 'seconds.', nonce / (time.time() - powStartTime), 'nonce trials per second.' + except: + pass + shared.printLock.release() + encryptedPayload = pack('>Q', nonce) + encryptedPayload + + inventoryHash = calculateInventoryHash(encryptedPayload) + objectType = 'msg' + shared.inventory[inventoryHash] = ( + objectType, toStreamNumber, encryptedPayload, int(time.time())) + shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Message sent. Waiting on acknowledgement. Sent on %1").arg(unicode( + strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) + print 'Broadcasting inv for my msg(within sendmsg function):', inventoryHash.encode('hex') + shared.broadcastToSendDataQueues(( + streamNumber, 'sendinv', inventoryHash)) + + # Update the status of the message in the 'sent' table to have a + # 'msgsent' status + shared.sqlLock.acquire() + t = (ackdata,) + shared.sqlSubmitQueue.put('''UPDATE sent SET status='msgsent' WHERE ackdata=?''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + + def requestPubKey(self, toAddress): + toStatus, addressVersionNumber, streamNumber, ripe = decodeAddress( + toAddress) + if toStatus != 'success': + shared.printLock.acquire() + sys.stderr.write('Very abnormal error occurred in requestPubKey. toAddress is: ' + repr( + toAddress) + '. Please report this error to Atheros.') + shared.printLock.release() + return + shared.neededPubkeys[ripe] = 0 + payload = pack('>Q', (int(time.time()) + random.randrange( + -300, 300))) # the current time plus or minus five minutes. + payload += encodeVarint(addressVersionNumber) + payload += encodeVarint(streamNumber) + payload += ripe + shared.printLock.acquire() + print 'making request for pubkey with ripe:', ripe.encode('hex') + shared.printLock.release() + # print 'trial value', trialValue + statusbar = 'Doing the computations necessary to request the recipient\'s public key.' + shared.UISignalQueue.put(('updateStatusBar', statusbar)) + shared.UISignalQueue.put(('updateSentItemStatusByHash', ( + ripe, tr.translateText("MainWindow",'Doing work necessary to request encryption key.')))) + target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) + initialHash = hashlib.sha512(payload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + shared.printLock.acquire() + print 'Found proof of work', trialValue, 'Nonce:', nonce + shared.printLock.release() + + payload = pack('>Q', nonce) + payload + inventoryHash = calculateInventoryHash(payload) + objectType = 'getpubkey' + shared.inventory[inventoryHash] = ( + objectType, streamNumber, payload, int(time.time())) + print 'sending inv (for the getpubkey message)' + shared.broadcastToSendDataQueues(( + streamNumber, 'sendinv', inventoryHash)) + + t = (toAddress,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put( + '''UPDATE sent SET status='awaitingpubkey' WHERE toaddress=? AND status='doingpubkeypow' ''') + shared.sqlSubmitQueue.put(t) + shared.sqlReturnQueue.get() + shared.sqlSubmitQueue.put('commit') + shared.sqlLock.release() + + shared.UISignalQueue.put(( + 'updateStatusBar', tr.translateText("MainWindow",'Broacasting the public key request. This program will auto-retry if they are offline.'))) + shared.UISignalQueue.put(('updateSentItemStatusByHash', (ripe, tr.translateText("MainWindow",'Sending public key request. Waiting for reply. Requested at %1').arg(unicode( + strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8'))))) + + def generateFullAckMessage(self, ackdata, toStreamNumber, embeddedTime): + payload = embeddedTime + encodeVarint(toStreamNumber) + ackdata + target = 2 ** 64 / ((len(payload) + shared.networkDefaultPayloadLengthExtraBytes + + 8) * shared.networkDefaultProofOfWorkNonceTrialsPerByte) + shared.printLock.acquire() + print '(For ack message) Doing proof of work...' + shared.printLock.release() + powStartTime = time.time() + initialHash = hashlib.sha512(payload).digest() + trialValue, nonce = proofofwork.run(target, initialHash) + shared.printLock.acquire() + print '(For ack message) Found proof of work', trialValue, 'Nonce:', nonce + try: + print 'POW took', int(time.time() - powStartTime), 'seconds.', nonce / (time.time() - powStartTime), 'nonce trials per second.' + except: + pass + shared.printLock.release() + payload = pack('>Q', nonce) + payload + 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)) + headerData += hashlib.sha512(payload).digest()[:4] + return headerData + payload diff --git a/src/class_sqlThread.py b/src/class_sqlThread.py index f54d5a86..5848e868 100644 --- a/src/class_sqlThread.py +++ b/src/class_sqlThread.py @@ -4,6 +4,7 @@ import sqlite3 import time import shutil # used for moving the messages.dat file import sys +import os # This thread exists because SQLITE3 is so un-threadsafe that we must # submit queries to it and it puts results back in a different queue. They diff --git a/src/defaultKnownNodes.py b/src/defaultKnownNodes.py index 4f4e80ce..5c6d5b21 100644 --- a/src/defaultKnownNodes.py +++ b/src/defaultKnownNodes.py @@ -59,7 +59,7 @@ if __name__ == "__main__": APPNAME = "PyBitmessage" from os import path, environ if sys.platform == 'darwin': - from AppKit import NSSearchPathForDirectoriesInDomains + from AppKit import NSSearchPathForDirectoriesInDomains # @UnresolvedImport # http://developer.apple.com/DOCUMENTATION/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Functions/Reference/reference.html#//apple_ref/c/func/NSSearchPathForDirectoriesInDomains # NSApplicationSupportDirectory = 14 # NSUserDomainMask = 1 diff --git a/src/helper_generic.py b/src/helper_generic.py index 99c1c2d3..e79a5a43 100644 --- a/src/helper_generic.py +++ b/src/helper_generic.py @@ -1,4 +1,5 @@ import shared +import sys def convertIntToString(n): a = __builtins__.hex(n) diff --git a/src/helper_startup.py b/src/helper_startup.py index 3cea3a30..df27fd6e 100644 --- a/src/helper_startup.py +++ b/src/helper_startup.py @@ -8,7 +8,6 @@ storeConfigFilesInSameDirectoryAsProgramByDefault = False # The user may de-sel def loadConfig(): # First try to load the config file (the keys.dat file) from the program # directory - shared.config = ConfigParser.SafeConfigParser() shared.config.read('keys.dat') try: shared.config.get('bitmessagesettings', 'settingsversion') diff --git a/src/proofofwork.py b/src/proofofwork.py index f65c127f..f2c32c06 100644 --- a/src/proofofwork.py +++ b/src/proofofwork.py @@ -4,16 +4,17 @@ import hashlib from struct import unpack, pack import sys +from shared import config #import os def _set_idle(): if 'linux' in sys.platform: import os - os.nice(20) + os.nice(20) # @UndefinedVariable else: try: sys.getwindowsversion() - import win32api,win32process,win32con + import win32api,win32process,win32con # @UnresolvedImport pid = win32api.GetCurrentProcessId() handle = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, True, pid) win32process.SetPriorityClass(handle, win32process.IDLE_PRIORITY_CLASS) diff --git a/src/shared.py b/src/shared.py index 256008c1..95be2a94 100644 --- a/src/shared.py +++ b/src/shared.py @@ -1,4 +1,12 @@ softwareVersion = '0.3.3-2' +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 +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 threading import sys @@ -8,7 +16,13 @@ import Queue import pickle import os import time +import ConfigParser +import socket +import random +import highlevelcrypto +import shared +config = ConfigParser.SafeConfigParser() myECCryptorObjects = {} MyECSubscriptionCryptorObjects = {} myAddressesByHash = {} #The key in this dictionary is the RIPE hash which is encoded in an address and value is the address itself. @@ -29,11 +43,74 @@ appdata = '' #holds the location of the application data storage directory statusIconColor = 'red' connectedHostsList = {} #List of hosts to which we are connected. Used to guarantee that the outgoingSynSender threads won't connect to the same remote node twice. shutdown = 0 #Set to 1 by the doCleanShutdown function. Used to tell the proof of work worker threads to exit. +alreadyAttemptedConnectionsList = { +} # This is a list of nodes to which we have already attempted a connection +alreadyAttemptedConnectionsListLock = threading.Lock() +alreadyAttemptedConnectionsListResetTime = int( + time.time()) # used to clear out the alreadyAttemptedConnectionsList periodically so that we will retry connecting to hosts to which we have already tried to connect. +numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer = {} +neededPubkeys = {} +eightBytesOfRandomDataUsedToDetectConnectionsToSelf = pack( + '>Q', random.randrange(1, 18446744073709551615)) +successfullyDecryptMessageTimings = [ + ] # A list of the amounts of time it took to successfully decrypt msg messages +apiAddressGeneratorReturnQueue = Queue.Queue( + ) # The address generator thread uses this queue to get information back to the API thread. +ackdataForWhichImWatching = {} #If changed, these values will cause particularly unexpected behavior: You won't be able to either send or receive messages because the proof of work you do (or demand) won't match that done or demanded by others. Don't change them! networkDefaultProofOfWorkNonceTrialsPerByte = 320 #The amount of work that should be performed (and demanded) per byte of the payload. Double this number to double the work. networkDefaultPayloadLengthExtraBytes = 14000 #To make sending short messages a little more difficult, this value is added to the payload length for use in calculating the proof of work target. + + +def isInSqlInventory(hash): + t = (hash,) + shared.sqlLock.acquire() + shared.sqlSubmitQueue.put('''select hash from inventory where hash=?''') + shared.sqlSubmitQueue.put(t) + queryreturn = shared.sqlReturnQueue.get() + shared.sqlLock.release() + if queryreturn == []: + return False + else: + return True + +def assembleVersionMessage(remoteHost, remotePort, myStreamNumber): + payload = '' + payload += pack('>L', 2) # protocol version. + payload += pack('>q', 1) # bitflags of the services I offer. + payload += pack('>q', int(time.time())) + + payload += pack( + '>q', 1) # boolservices of remote connection. How can I even know this for sure? This is probably ignored by the remote host. + payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + \ + socket.inet_aton(remoteHost) + payload += pack('>H', remotePort) # remote IPv6 and port + + payload += pack('>q', 1) # bitflags of the services I offer. + payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF' + pack( + '>L', 2130706433) # = 127.0.0.1. This will be ignored by the remote host. The actual remote connected IP will be used. + payload += pack('>H', shared.config.getint( + 'bitmessagesettings', 'port')) # my external IPv6 and port + + random.seed() + payload += eightBytesOfRandomDataUsedToDetectConnectionsToSelf + userAgent = '/PyBitmessage:' + shared.softwareVersion + \ + '/' # Length of userAgent must be less than 253. + payload += pack('>B', len( + userAgent)) # user agent string length. If the user agent is more than 252 bytes long, this code isn't going to work. + payload += userAgent + payload += encodeVarint( + 1) # The number of streams about which I care. PyBitmessage currently only supports 1 per connection. + payload += encodeVarint(myStreamNumber) + + datatosend = '\xe9\xbe\xb4\xd9' # magic bits, slighly different from Bitcoin's magic bits. + datatosend = datatosend + 'version\x00\x00\x00\x00\x00' # version command + datatosend = datatosend + pack('>L', len(payload)) # payload length + datatosend = datatosend + hashlib.sha512(payload).digest()[0:4] + return datatosend + payload + def lookupAppdataFolder(): APPNAME = "PyBitmessage" from os import path, environ diff --git a/src/singleton.py b/src/singleton.py index 7ecca3b7..ee5c3077 100644 --- a/src/singleton.py +++ b/src/singleton.py @@ -34,7 +34,7 @@ class singleinstance: print(e.errno) raise else: # non Windows - import fcntl + import fcntl # @UnresolvedImport self.fp = open(self.lockfile, 'w') try: fcntl.lockf(self.fp, fcntl.LOCK_EX | fcntl.LOCK_NB) @@ -53,7 +53,7 @@ class singleinstance: os.close(self.fd) os.unlink(self.lockfile) else: - import fcntl + import fcntl # @UnresolvedImport fcntl.lockf(self.fp, fcntl.LOCK_UN) if os.path.isfile(self.lockfile): os.unlink(self.lockfile) diff --git a/src/tr.py b/src/tr.py new file mode 100644 index 00000000..1f3ef9b8 --- /dev/null +++ b/src/tr.py @@ -0,0 +1,30 @@ +import shared + +# This is used so that the translateText function can be used when we are in daemon mode and not using any QT functions. +class translateClass: + def __init__(self, context, text): + self.context = context + self.text = text + def arg(self,argument): + if '%' in self.text: + return translateClass(self.context, self.text.replace('%','',1)) # This doesn't actually do anything with the arguments because we don't have a UI in which to display this information anyway. + else: + return self.text + +def _translate(context, text): + return translateText(context, text) + +def translateText(context, text): + if not shared.safeConfigGetBoolean('bitmessagesettings', 'daemon'): + try: + from PyQt4 import QtCore, QtGui + except Exception as err: + print 'PyBitmessage requires PyQt unless you want to run it as a daemon and interact with it using the API. You can download PyQt from http://www.riverbankcomputing.com/software/pyqt/download or by searching Google for \'PyQt Download\'. If you want to run in daemon mode, see https://bitmessage.org/wiki/Daemon' + print 'Error message:', err + os._exit(0) + return QtGui.QApplication.translate(context, text) + else: + if '%' in text: + return translateClass(context, text.replace('%','',1)) + else: + return text \ No newline at end of file