Seperating class_singleListener, class_receiveDataThread, class_sendDataThread
This commit is contained in:
Jordan Hall
parent
c7d9b316ef
commit
27a8662f22
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@ -54,6 +54,8 @@ from class_sqlThread import *
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from class_singleCleaner import *
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from class_singleWorker import *
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from class_addressGenerator import *
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from class_sendDataThread import *
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from class_receiveDataThread import *
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# Helper Functions
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import helper_startup
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@ -224,2194 +226,6 @@ class outgoingSynSender(threading.Thread):
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time.sleep(0.1)
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# This thread is created either by the synSenderThread(for outgoing
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# connections) or the singleListenerThread(for incoming connectiosn).
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class receiveDataThread(threading.Thread):
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def __init__(self):
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threading.Thread.__init__(self)
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self.data = ''
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self.verackSent = False
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self.verackReceived = False
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def setup(
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self,
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sock,
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HOST,
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port,
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streamNumber,
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objectsOfWhichThisRemoteNodeIsAlreadyAware):
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self.sock = sock
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self.HOST = HOST
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self.PORT = port
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self.streamNumber = streamNumber
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self.payloadLength = 0 # This is the protocol payload length thus it doesn't include the 24 byte message header
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self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave = {}
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shared.connectedHostsList[
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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.
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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.
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if self.streamNumber == -1: # This was an incoming connection. Send out a version message if we accept the other node's version message.
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self.initiatedConnection = False
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else:
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self.initiatedConnection = True
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selfInitiatedConnections[streamNumber][self] = 0
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self.ackDataThatWeHaveYetToSend = [
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] # 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.
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self.objectsOfWhichThisRemoteNodeIsAlreadyAware = objectsOfWhichThisRemoteNodeIsAlreadyAware
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def run(self):
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shared.printLock.acquire()
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print 'ID of the receiveDataThread is', str(id(self)) + '. The size of the shared.connectedHostsList is now', len(shared.connectedHostsList)
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shared.printLock.release()
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while True:
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try:
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self.data += self.sock.recv(4096)
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except socket.timeout:
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shared.printLock.acquire()
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print 'Timeout occurred waiting for data from', self.HOST + '. Closing receiveData thread. (ID:', str(id(self)) + ')'
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shared.printLock.release()
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break
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except Exception as err:
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shared.printLock.acquire()
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print 'sock.recv error. Closing receiveData thread (HOST:', self.HOST, 'ID:', str(id(self)) + ').', err
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shared.printLock.release()
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break
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# print 'Received', repr(self.data)
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if self.data == "":
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shared.printLock.acquire()
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print 'Connection to', self.HOST, 'closed. Closing receiveData thread. (ID:', str(id(self)) + ')'
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shared.printLock.release()
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break
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else:
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self.processData()
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try:
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del selfInitiatedConnections[self.streamNumber][self]
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shared.printLock.acquire()
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print 'removed self (a receiveDataThread) from selfInitiatedConnections'
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shared.printLock.release()
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except:
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pass
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shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST))
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try:
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del shared.connectedHostsList[self.HOST]
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except Exception as err:
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shared.printLock.acquire()
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print 'Could not delete', self.HOST, 'from shared.connectedHostsList.', err
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shared.printLock.release()
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try:
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del numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[
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self.HOST]
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except:
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pass
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shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data'))
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shared.printLock.acquire()
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print 'The size of the connectedHostsList is now:', len(shared.connectedHostsList)
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shared.printLock.release()
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def processData(self):
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global verbose
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# if verbose >= 3:
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# shared.printLock.acquire()
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# print 'self.data is currently ', repr(self.data)
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# shared.printLock.release()
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if len(self.data) < 20: # if so little of the data has arrived that we can't even unpack the payload length
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return
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if self.data[0:4] != '\xe9\xbe\xb4\xd9':
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if verbose >= 1:
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shared.printLock.acquire()
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print 'The magic bytes were not correct. First 40 bytes of data: ' + repr(self.data[0:40])
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shared.printLock.release()
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self.data = ""
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return
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self.payloadLength, = unpack('>L', self.data[16:20])
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if len(self.data) < self.payloadLength + 24: # check if the whole message has arrived yet.
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return
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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...
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print 'Checksum incorrect. Clearing this message.'
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self.data = self.data[self.payloadLength + 24:]
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self.processData()
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return
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# The time we've last seen this node is obviously right now since we
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# just received valid data from it. So update the knownNodes list so
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# that other peers can be made aware of its existance.
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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).
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shared.knownNodesLock.acquire()
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shared.knownNodes[self.streamNumber][
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self.HOST] = (self.PORT, int(time.time()))
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shared.knownNodesLock.release()
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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.)
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remoteCommand = self.data[4:16]
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shared.printLock.acquire()
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print 'remoteCommand', repr(remoteCommand.replace('\x00', '')), ' from', self.HOST
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shared.printLock.release()
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if remoteCommand == 'version\x00\x00\x00\x00\x00':
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self.recversion(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'verack\x00\x00\x00\x00\x00\x00':
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self.recverack()
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elif remoteCommand == 'addr\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recaddr(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'getpubkey\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recgetpubkey(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'pubkey\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recpubkey(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'inv\x00\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recinv(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'getdata\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recgetdata(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'msg\x00\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recmsg(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'broadcast\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.recbroadcast(self.data[24:self.payloadLength + 24])
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elif remoteCommand == 'ping\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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self.sendpong()
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elif remoteCommand == 'pong\x00\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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pass
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elif remoteCommand == 'alert\x00\x00\x00\x00\x00\x00\x00' and self.connectionIsOrWasFullyEstablished:
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pass
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self.data = self.data[
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self.payloadLength + 24:] # take this message out and then process the next message
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if self.data == '':
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while len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 0:
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random.seed()
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objectHash, = random.sample(
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self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave, 1)
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if objectHash in shared.inventory:
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shared.printLock.acquire()
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print 'Inventory (in memory) already has object listed in inv message.'
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shared.printLock.release()
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del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[
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objectHash]
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elif isInSqlInventory(objectHash):
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if verbose >= 3:
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shared.printLock.acquire()
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print 'Inventory (SQL on disk) already has object listed in inv message.'
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shared.printLock.release()
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del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[
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objectHash]
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else:
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self.sendgetdata(objectHash)
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del self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave[
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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.
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if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) == 0:
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shared.printLock.acquire()
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print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave)
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shared.printLock.release()
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try:
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del numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[
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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.
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except:
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pass
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break
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if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) == 0:
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shared.printLock.acquire()
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print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave)
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shared.printLock.release()
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try:
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del numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[
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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.
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except:
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pass
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if len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave) > 0:
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shared.printLock.acquire()
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print '(concerning', self.HOST + ')', 'number of objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave is now', len(self.objectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHave)
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shared.printLock.release()
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numberOfObjectsThatWeHaveYetToCheckAndSeeWhetherWeAlreadyHavePerPeer[self.HOST] = len(
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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.
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if len(self.ackDataThatWeHaveYetToSend) > 0:
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self.data = self.ackDataThatWeHaveYetToSend.pop()
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self.processData()
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def isProofOfWorkSufficient(
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self,
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data,
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nonceTrialsPerByte=0,
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payloadLengthExtraBytes=0):
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if nonceTrialsPerByte < shared.networkDefaultProofOfWorkNonceTrialsPerByte:
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nonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte
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if payloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes:
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payloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
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POW, = unpack('>Q', hashlib.sha512(hashlib.sha512(data[
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:8] + hashlib.sha512(data[8:]).digest()).digest()).digest()[0:8])
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# print 'POW:', POW
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return POW <= 2 ** 64 / ((len(data) + payloadLengthExtraBytes) * (nonceTrialsPerByte))
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def sendpong(self):
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print 'Sending pong'
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try:
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self.sock.sendall(
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'\xE9\xBE\xB4\xD9\x70\x6F\x6E\x67\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xcf\x83\xe1\x35')
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except Exception as err:
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# if not 'Bad file descriptor' in err:
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shared.printLock.acquire()
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sys.stderr.write('sock.sendall error: %s\n' % err)
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shared.printLock.release()
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def recverack(self):
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print 'verack received'
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self.verackReceived = True
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if self.verackSent:
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# We have thus both sent and received a verack.
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self.connectionFullyEstablished()
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def connectionFullyEstablished(self):
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self.connectionIsOrWasFullyEstablished = True
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if not self.initiatedConnection:
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shared.UISignalQueue.put(('setStatusIcon', 'green'))
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self.sock.settimeout(
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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.
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shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data'))
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remoteNodeIncomingPort, remoteNodeSeenTime = shared.knownNodes[
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self.streamNumber][self.HOST]
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shared.printLock.acquire()
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print 'Connection fully established with', self.HOST, remoteNodeIncomingPort
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print 'The size of the connectedHostsList is now', len(shared.connectedHostsList)
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print 'The length of sendDataQueues is now:', len(shared.sendDataQueues)
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print 'broadcasting addr from within connectionFullyEstablished function.'
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shared.printLock.release()
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self.broadcastaddr([(int(time.time()), self.streamNumber, 1, self.HOST,
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remoteNodeIncomingPort)]) # This lets all of our peers know about this new node.
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self.sendaddr() # This is one large addr message to this one peer.
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if not self.initiatedConnection and len(shared.connectedHostsList) > 200:
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shared.printLock.acquire()
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print 'We are connected to too many people. Closing connection.'
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shared.printLock.release()
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shared.broadcastToSendDataQueues((0, 'shutdown', self.HOST))
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return
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self.sendBigInv()
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def sendBigInv(self):
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shared.sqlLock.acquire()
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# Select all hashes which are younger than two days old and in this
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# stream.
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t = (int(time.time()) - maximumAgeOfObjectsThatIAdvertiseToOthers, int(
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time.time()) - lengthOfTimeToHoldOnToAllPubkeys, self.streamNumber)
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shared.sqlSubmitQueue.put(
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'''SELECT hash FROM inventory WHERE ((receivedtime>? and objecttype<>'pubkey') or (receivedtime>? and objecttype='pubkey')) and streamnumber=?''')
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shared.sqlSubmitQueue.put(t)
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queryreturn = shared.sqlReturnQueue.get()
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shared.sqlLock.release()
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bigInvList = {}
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for row in queryreturn:
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hash, = row
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if hash not in self.objectsOfWhichThisRemoteNodeIsAlreadyAware:
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bigInvList[hash] = 0
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# We also have messages in our inventory in memory (which is a python
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# dictionary). Let's fetch those too.
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for hash, storedValue in shared.inventory.items():
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if hash not in self.objectsOfWhichThisRemoteNodeIsAlreadyAware:
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objectType, streamNumber, payload, receivedTime = storedValue
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if streamNumber == self.streamNumber and receivedTime > int(time.time()) - maximumAgeOfObjectsThatIAdvertiseToOthers:
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bigInvList[hash] = 0
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numberOfObjectsInInvMessage = 0
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payload = ''
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# Now let us start appending all of these hashes together. They will be
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# sent out in a big inv message to our new peer.
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for hash, storedValue in bigInvList.items():
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payload += hash
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numberOfObjectsInInvMessage += 1
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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.
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self.sendinvMessageToJustThisOnePeer(
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numberOfObjectsInInvMessage, payload)
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payload = ''
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numberOfObjectsInInvMessage = 0
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if numberOfObjectsInInvMessage > 0:
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self.sendinvMessageToJustThisOnePeer(
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numberOfObjectsInInvMessage, payload)
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# Self explanatory. Notice that there is also a broadcastinv function for
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# broadcasting invs to everyone in our stream.
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def sendinvMessageToJustThisOnePeer(self, numberOfObjects, payload):
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payload = encodeVarint(numberOfObjects) + payload
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headerData = '\xe9\xbe\xb4\xd9' # magic bits, slighly different from Bitcoin's magic bits.
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headerData += 'inv\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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headerData += pack('>L', len(payload))
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headerData += hashlib.sha512(payload).digest()[:4]
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shared.printLock.acquire()
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print 'Sending huge inv message with', numberOfObjects, 'objects to just this one peer'
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shared.printLock.release()
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try:
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self.sock.sendall(headerData + payload)
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except Exception as err:
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# if not 'Bad file descriptor' in err:
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shared.printLock.acquire()
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sys.stderr.write('sock.sendall error: %s\n' % err)
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shared.printLock.release()
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# We have received a broadcast message
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def recbroadcast(self, data):
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self.messageProcessingStartTime = time.time()
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# First we must check to make sure the proof of work is sufficient.
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if not self.isProofOfWorkSufficient(data):
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print 'Proof of work in broadcast message insufficient.'
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return
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readPosition = 8 # bypass the nonce
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embeddedTime, = unpack('>I', data[readPosition:readPosition + 4])
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# This section is used for the transition from 32 bit time to 64 bit
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# time in the protocol.
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if embeddedTime == 0:
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embeddedTime, = unpack('>Q', data[readPosition:readPosition + 8])
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readPosition += 8
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else:
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readPosition += 4
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if embeddedTime > (int(time.time()) + 10800): # prevent funny business
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print 'The embedded time in this broadcast message is more than three hours in the future. That doesn\'t make sense. Ignoring message.'
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return
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if embeddedTime < (int(time.time()) - maximumAgeOfAnObjectThatIAmWillingToAccept):
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print 'The embedded time in this broadcast message is too old. Ignoring message.'
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return
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if len(data) < 180:
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print 'The payload length of this broadcast packet is unreasonably low. Someone is probably trying funny business. Ignoring message.'
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return
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# Let us check to make sure the stream number is correct (thus
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# preventing an individual from sending broadcasts out on the wrong
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# streams or all streams).
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broadcastVersion, broadcastVersionLength = decodeVarint(
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data[readPosition:readPosition + 10])
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if broadcastVersion >= 2:
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streamNumber, streamNumberLength = decodeVarint(data[
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readPosition + broadcastVersionLength:readPosition + broadcastVersionLength + 10])
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if streamNumber != self.streamNumber:
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print 'The stream number encoded in this broadcast message (' + str(streamNumber) + ') does not match the stream number on which it was received. Ignoring it.'
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return
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shared.inventoryLock.acquire()
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self.inventoryHash = calculateInventoryHash(data)
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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()
|
||||
|
|
|
|||
2028
src/class_receiveDataThread.py
Normal file
2028
src/class_receiveDataThread.py
Normal file
|
|
@ -0,0 +1,2028 @@
|
|||
import time
|
||||
import threading
|
||||
import shared
|
||||
|
||||
# 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()
|
||||
165
src/class_sendDataThread.py
Normal file
165
src/class_sendDataThread.py
Normal file
|
|
@ -0,0 +1,165 @@
|
|||
import time
|
||||
import threading
|
||||
import shared
|
||||
|
||||
# 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()
|
||||
|
||||
|
|
@ -2,6 +2,9 @@ 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
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user