cis-kuldeep/PyBitmessage-2021-04-27
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delay addr messages random number of seconds

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This commit is contained in:
Jonathan Warren 2013-09-09 19:26:32 -04:00
parent f0bf3aad48
commit 90e60d8145
5 changed files with 160 additions and 233 deletions
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23
src/class_objectHashHolder.py
View File

@ -1,6 +1,7 @@
# objectHashHolder is a timer-driven thread. One objectHashHolder thread is used # objectHashHolder is a timer-driven thread. One objectHashHolder thread is used
# by each sendDataThread. The sendDataThread uses it whenever it needs to # by each sendDataThread. The sendDataThread uses it whenever it needs to
# advertise an object to peers. Instead of sending it out immediately, it must # advertise an object to peers in an inv message, or advertise a peer to other
# peers in an addr message. Instead of sending them out immediately, it must
# wait a random number of seconds for each connection so that different peers # wait a random number of seconds for each connection so that different peers
# get different objects at different times. Thus an attacker who is # get different objects at different times. Thus an attacker who is
# connecting to many network nodes who receives a message first from Alice # connecting to many network nodes who receives a message first from Alice
@ -15,22 +16,30 @@ class objectHashHolder(threading.Thread):
threading.Thread.__init__(self) threading.Thread.__init__(self)
self.shutdown = False self.shutdown = False
self.sendDataThreadMailbox = sendDataThreadMailbox # This queue is used to submit data back to our associated sendDataThread. self.sendDataThreadMailbox = sendDataThreadMailbox # This queue is used to submit data back to our associated sendDataThread.
self.collectionOfLists = {} self.collectionOfHashLists = {}
self.collectionOfPeerLists = {}
for i in range(10): for i in range(10):
self.collectionOfLists[i] = [] self.collectionOfHashLists[i] = []
self.collectionOfPeerLists[i] = []
def run(self): def run(self):
iterator = 0 iterator = 0
while not self.shutdown: while not self.shutdown:
if len(self.collectionOfLists[iterator]) > 0: if len(self.collectionOfHashLists[iterator]) > 0:
self.sendDataThreadMailbox.put((0, 'sendinv', self.collectionOfLists[iterator])) self.sendDataThreadMailbox.put((0, 'sendinv', self.collectionOfHashLists[iterator]))
self.collectionOfLists[iterator] = [] self.collectionOfHashLists[iterator] = []
if len(self.collectionOfPeerLists[iterator]) > 0:
self.sendDataThreadMailbox.put((0, 'sendaddr', self.collectionOfPeerLists[iterator]))
self.collectionOfPeerLists[iterator] = []
iterator += 1 iterator += 1
iterator %= 10 iterator %= 10
time.sleep(1) time.sleep(1)
def holdHash(self,hash): def holdHash(self,hash):
self.collectionOfLists[random.randrange(0, 10)].append(hash) self.collectionOfHashLists[random.randrange(0, 10)].append(hash)
def holdPeer(self,peerDetails):
self.collectionOfPeerLists[random.randrange(0, 10)].append(peerDetails)
def close(self): def close(self):
self.shutdown = True self.shutdown = True

320
src/class_receiveDataThread.py
View File

@ -5,7 +5,6 @@ import threading
import shared import shared
import hashlib import hashlib
import socket import socket
import pickle
import random import random
from struct import unpack, pack from struct import unpack, pack
import sys import sys
@ -91,7 +90,6 @@ class receiveDataThread(threading.Thread):
del self.selfInitiatedConnections[self.streamNumber][self] del self.selfInitiatedConnections[self.streamNumber][self]
with shared.printLock: with shared.printLock:
print 'removed self (a receiveDataThread) from selfInitiatedConnections' print 'removed self (a receiveDataThread) from selfInitiatedConnections'
except: except:
pass pass
shared.broadcastToSendDataQueues((0, 'shutdown', self.peer)) shared.broadcastToSendDataQueues((0, 'shutdown', self.peer))
@ -175,7 +173,6 @@ class receiveDataThread(threading.Thread):
if self.data == '': if self.data == '':
while len(self.objectsThatWeHaveYetToGetFromThisPeer) > 0: while len(self.objectsThatWeHaveYetToGetFromThisPeer) > 0:
shared.numberOfInventoryLookupsPerformed += 1 shared.numberOfInventoryLookupsPerformed += 1
random.seed()
objectHash, = random.sample( objectHash, = random.sample(
self.objectsThatWeHaveYetToGetFromThisPeer, 1) self.objectsThatWeHaveYetToGetFromThisPeer, 1)
if objectHash in shared.inventory: if objectHash in shared.inventory:
@ -264,16 +261,18 @@ class receiveDataThread(threading.Thread):
self.sock.settimeout( 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. 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')) shared.UISignalQueue.put(('updateNetworkStatusTab', 'no data'))
remoteNodeSeenTime = shared.knownNodes[
self.streamNumber][self.peer]
with shared.printLock: with shared.printLock:
print 'Connection fully established with', self.peer print 'Connection fully established with', self.peer
print 'The size of the connectedHostsList is now', len(shared.connectedHostsList) print 'The size of the connectedHostsList is now', len(shared.connectedHostsList)
print 'The length of sendDataQueues is now:', len(shared.sendDataQueues) print 'The length of sendDataQueues is now:', len(shared.sendDataQueues)
print 'broadcasting addr from within connectionFullyEstablished function.' print 'broadcasting addr from within connectionFullyEstablished function.'
self.broadcastaddr([(int(time.time()), self.streamNumber, 1, self.peer.host, #self.broadcastaddr([(int(time.time()), self.streamNumber, 1, self.peer.host,
self.peer.port)]) # This lets all of our peers know about this new node. # self.remoteNodeIncomingPort)]) # This lets all of our peers know about this new node.
dataToSend = (int(time.time()), self.streamNumber, 1, self.peer.host, self.remoteNodeIncomingPort)
shared.broadcastToSendDataQueues((
self.streamNumber, 'advertisepeer', dataToSend))
self.sendaddr() # This is one large addr message to this one peer. self.sendaddr() # This is one large addr message to this one peer.
if not self.initiatedConnection and len(shared.connectedHostsList) > 200: if not self.initiatedConnection and len(shared.connectedHostsList) > 200:
with shared.printLock: with shared.printLock:
@ -1561,7 +1560,7 @@ class receiveDataThread(threading.Thread):
# We have received an addr message. # We have received an addr message.
def recaddr(self, data): def recaddr(self, data):
listOfAddressDetailsToBroadcastToPeers = [] #listOfAddressDetailsToBroadcastToPeers = []
numberOfAddressesIncluded = 0 numberOfAddressesIncluded = 0
numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint( numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint(
data[:10]) data[:10])
@ -1570,227 +1569,113 @@ class receiveDataThread(threading.Thread):
with shared.printLock: with shared.printLock:
print 'addr message contains', numberOfAddressesIncluded, 'IP addresses.' print 'addr message contains', numberOfAddressesIncluded, 'IP addresses.'
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
if self.remoteProtocolVersion == 1: for i in range(0, numberOfAddressesIncluded):
if numberOfAddressesIncluded > 1000 or numberOfAddressesIncluded == 0: try:
return if data[20 + lengthOfNumberOfAddresses + (38 * i):32 + lengthOfNumberOfAddresses + (38 * i)] != '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':
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':
with shared.printLock:
print 'Skipping IPv6 address.', repr(data[16 + lengthOfNumberOfAddresses + (34 * i):28 + lengthOfNumberOfAddresses + (34 * i)])
continue
except Exception as err:
with shared.printLock: with shared.printLock:
sys.stderr.write( print 'Skipping IPv6 address.', repr(data[20 + lengthOfNumberOfAddresses + (38 * i):32 + lengthOfNumberOfAddresses + (38 * i)])
'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err))
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:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err))
break # giving up on unpacking any more. We should still be connected however.
if recaddrStream == 0:
continue 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. except Exception as err:
continue with shared.printLock:
try: sys.stderr.write(
recaddrServices, = unpack('>Q', data[8 + lengthOfNumberOfAddresses + ( 'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err))
34 * i):16 + lengthOfNumberOfAddresses + (34 * i)])
except Exception as err:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err))
break # giving up on unpacking any more. We should still be connected however. break # giving up on unpacking any more. We should still be connected however.
try: try:
recaddrPort, = unpack('>H', data[32 + lengthOfNumberOfAddresses + ( recaddrStream, = unpack('>I', data[8 + lengthOfNumberOfAddresses + (
34 * i):34 + lengthOfNumberOfAddresses + (34 * i)]) 38 * i):12 + lengthOfNumberOfAddresses + (38 * i)])
except Exception as err: except Exception as err:
with shared.printLock: with shared.printLock:
sys.stderr.write( sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err)) 'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err))
break # giving up on unpacking any more. We should still be connected however. break # giving up on unpacking any more. We should still be connected however.
# print 'Within recaddr(): IP', recaddrIP, ', Port', if recaddrStream == 0:
# recaddrPort, ', i', i continue
hostFromAddrMessage = socket.inet_ntoa(data[ 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.
28 + lengthOfNumberOfAddresses + (34 * i):32 + lengthOfNumberOfAddresses + (34 * i)]) continue
# print 'hostFromAddrMessage', hostFromAddrMessage try:
if data[28 + lengthOfNumberOfAddresses + (34 * i)] == '\x7F': recaddrServices, = unpack('>Q', data[12 + lengthOfNumberOfAddresses + (
print 'Ignoring IP address in loopback range:', hostFromAddrMessage 38 * i):20 + lengthOfNumberOfAddresses + (38 * i)])
continue except Exception as err:
if helper_generic.isHostInPrivateIPRange(hostFromAddrMessage): with shared.printLock:
print 'Ignoring IP address in private range:', hostFromAddrMessage sys.stderr.write(
continue 'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err))
timeSomeoneElseReceivedMessageFromThisNode, = unpack('>I', data[lengthOfNumberOfAddresses + (
34 * i):4 + lengthOfNumberOfAddresses + (34 * i)]) # This is the 'time' value in the received addr message. break # giving up on unpacking any more. We should still be connected however.
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() try:
shared.knownNodes[recaddrStream] = {} recaddrPort, = unpack('>H', data[36 + lengthOfNumberOfAddresses + (
shared.knownNodesLock.release() 38 * i):38 + lengthOfNumberOfAddresses + (38 * i)])
peerFromAddrMessage = shared.Peer(hostFromAddrMessage, recaddrPort) except Exception as err:
if peerFromAddrMessage not in shared.knownNodes[recaddrStream]: with shared.printLock:
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. sys.stderr.write(
shared.knownNodesLock.acquire() 'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err))
shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode
shared.knownNodesLock.release() break # giving up on unpacking any more. We should still be connected however.
needToWriteKnownNodesToDisk = True # print 'Within recaddr(): IP', recaddrIP, ', Port',
hostDetails = ( # recaddrPort, ', i', i
timeSomeoneElseReceivedMessageFromThisNode, hostFromAddrMessage = socket.inet_ntoa(data[
recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) 32 + lengthOfNumberOfAddresses + (38 * i):36 + lengthOfNumberOfAddresses + (38 * i)])
listOfAddressDetailsToBroadcastToPeers.append( # print 'hostFromAddrMessage', hostFromAddrMessage
hostDetails) if data[32 + lengthOfNumberOfAddresses + (38 * i)] == '\x7F':
else: print 'Ignoring IP address in loopback range:', hostFromAddrMessage
timeLastReceivedMessageFromThisNode = shared.knownNodes[recaddrStream][ continue
peerFromAddrMessage] # 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 data[32 + lengthOfNumberOfAddresses + (38 * i)] == '\x0A':
if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())): print 'Ignoring IP address in private range:', hostFromAddrMessage
shared.knownNodesLock.acquire() continue
shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode if data[32 + lengthOfNumberOfAddresses + (38 * i):34 + lengthOfNumberOfAddresses + (38 * i)] == '\xC0A8':
shared.knownNodesLock.release() print 'Ignoring IP address in private range:', hostFromAddrMessage
if needToWriteKnownNodesToDisk: # Runs if any nodes were new to us. Also, share those nodes with our peers. 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.knownNodesLock.acquire()
output = open(shared.appdata + 'knownnodes.dat', 'wb') shared.knownNodes[recaddrStream] = {}
pickle.dump(shared.knownNodes, output)
output.close()
shared.knownNodesLock.release() shared.knownNodesLock.release()
self.broadcastaddr( peerFromAddrMessage = shared.Peer(hostFromAddrMessage, recaddrPort)
listOfAddressDetailsToBroadcastToPeers) # no longer broadcast if peerFromAddrMessage not in shared.knownNodes[recaddrStream]:
with shared.printLock: 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.
print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.'
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':
with shared.printLock:
print 'Skipping IPv6 address.', repr(data[20 + lengthOfNumberOfAddresses + (38 * i):32 + lengthOfNumberOfAddresses + (38 * i)])
continue
except Exception as err:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (to test for an IPv6 address). Message: %s\n' % str(err))
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:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err))
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:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err))
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:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err))
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.knownNodesLock.acquire()
shared.knownNodes[recaddrStream] = {} shared.knownNodes[recaddrStream][peerFromAddrMessage] = (
timeSomeoneElseReceivedMessageFromThisNode)
shared.knownNodesLock.release() shared.knownNodesLock.release()
peerFromAddrMessage = shared.Peer(hostFromAddrMessage, recaddrPort) with shared.printLock:
if peerFromAddrMessage not in shared.knownNodes[recaddrStream]: print 'added new node', peerFromAddrMessage, 'to knownNodes in stream', 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][peerFromAddrMessage] = (
timeSomeoneElseReceivedMessageFromThisNode)
shared.knownNodesLock.release()
with shared.printLock:
print 'added new node', peerFromAddrMessage, 'to knownNodes in stream', recaddrStream
needToWriteKnownNodesToDisk = True shared.needToWriteKnownNodesToDisk = True
hostDetails = ( hostDetails = (
timeSomeoneElseReceivedMessageFromThisNode, timeSomeoneElseReceivedMessageFromThisNode,
recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort)
listOfAddressDetailsToBroadcastToPeers.append( #listOfAddressDetailsToBroadcastToPeers.append(hostDetails)
hostDetails) shared.broadcastToSendDataQueues((
else: self.streamNumber, 'advertisepeer', hostDetails))
timeLastReceivedMessageFromThisNode = shared.knownNodes[recaddrStream][ else:
peerFromAddrMessage] # 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. timeLastReceivedMessageFromThisNode = shared.knownNodes[recaddrStream][
if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())): peerFromAddrMessage] # 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.
shared.knownNodesLock.acquire() if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())):
shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode shared.knownNodesLock.acquire()
shared.knownNodesLock.release() shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode
if needToWriteKnownNodesToDisk: # Runs if any nodes were new to us. Also, share those nodes with our peers. shared.knownNodesLock.release()
shared.knownNodesLock.acquire()
output = open(shared.appdata + 'knownnodes.dat', 'wb') #if listOfAddressDetailsToBroadcastToPeers != []:
try: # self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers)
pickle.dump(shared.knownNodes, output) with shared.printLock:
output.close() print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.'
except Exception as err:
if "Errno 28" in str(err):
logger.fatal('(while receiveDataThread needToWriteKnownNodesToDisk) Alert: Your disk or data storage volume is full. ')
shared.UISignalQueue.put(('alert', (tr.translateText("MainWindow", "Disk full"), tr.translateText("MainWindow", 'Alert: Your disk or data storage volume is full. Bitmessage will now exit.'), True)))
if shared.daemon:
os._exit(0)
shared.knownNodesLock.release()
self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers)
with shared.printLock:
print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.'
# Function runs when we want to broadcast an addr message to all of our # 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 # peers. Runs when we learn of nodes that we didn't previously know about
# and want to share them with our peers. # and want to share them with our peers.
def broadcastaddr(self, listOfAddressDetailsToBroadcastToPeers): """def broadcastaddr(self, listOfAddressDetailsToBroadcastToPeers):
numberOfAddressesInAddrMessage = len( numberOfAddressesInAddrMessage = len(
listOfAddressDetailsToBroadcastToPeers) listOfAddressDetailsToBroadcastToPeers)
payload = '' payload = ''
@ -1816,7 +1701,7 @@ class receiveDataThread(threading.Thread):
print 'Broadcasting addr with', numberOfAddressesInAddrMessage, 'entries.' print 'Broadcasting addr with', numberOfAddressesInAddrMessage, 'entries.'
shared.broadcastToSendDataQueues(( shared.broadcastToSendDataQueues((
self.streamNumber, 'sendaddr', datatosend)) self.streamNumber, 'sendaddr', datatosend))"""
# Send a big addr message to our peer # Send a big addr message to our peer
def sendaddr(self): def sendaddr(self):
@ -1831,7 +1716,6 @@ class receiveDataThread(threading.Thread):
shared.knownNodesLock.acquire() shared.knownNodesLock.acquire()
if len(shared.knownNodes[self.streamNumber]) > 0: if len(shared.knownNodes[self.streamNumber]) > 0:
for i in range(500): for i in range(500):
random.seed()
peer, = random.sample(shared.knownNodes[self.streamNumber], 1) peer, = random.sample(shared.knownNodes[self.streamNumber], 1)
if helper_generic.isHostInPrivateIPRange(peer.host): if helper_generic.isHostInPrivateIPRange(peer.host):
continue continue
@ -1839,7 +1723,6 @@ class receiveDataThread(threading.Thread):
self.streamNumber][peer] self.streamNumber][peer]
if len(shared.knownNodes[self.streamNumber * 2]) > 0: if len(shared.knownNodes[self.streamNumber * 2]) > 0:
for i in range(250): for i in range(250):
random.seed()
peer, = random.sample(shared.knownNodes[ peer, = random.sample(shared.knownNodes[
self.streamNumber * 2], 1) self.streamNumber * 2], 1)
if helper_generic.isHostInPrivateIPRange(peer.host): if helper_generic.isHostInPrivateIPRange(peer.host):
@ -1848,7 +1731,6 @@ class receiveDataThread(threading.Thread):
self.streamNumber * 2][peer] self.streamNumber * 2][peer]
if len(shared.knownNodes[(self.streamNumber * 2) + 1]) > 0: if len(shared.knownNodes[(self.streamNumber * 2) + 1]) > 0:
for i in range(250): for i in range(250):
random.seed()
peer, = random.sample(shared.knownNodes[ peer, = random.sample(shared.knownNodes[
(self.streamNumber * 2) + 1], 1) (self.streamNumber * 2) + 1], 1)
if helper_generic.isHostInPrivateIPRange(peer.host): if helper_generic.isHostInPrivateIPRange(peer.host):
@ -1967,10 +1849,8 @@ class receiveDataThread(threading.Thread):
self.peer, self.remoteProtocolVersion))) self.peer, self.remoteProtocolVersion)))
shared.knownNodesLock.acquire() shared.knownNodesLock.acquire()
shared.knownNodes[self.streamNumber][self.peer] = int(time.time()) shared.knownNodes[self.streamNumber][shared.Peer(self.peer.host, self.remoteNodeIncomingPort)] = int(time.time())
output = open(shared.appdata + 'knownnodes.dat', 'wb') shared.needToWriteKnownNodesToDisk = True
pickle.dump(shared.knownNodes, output)
output.close()
shared.knownNodesLock.release() shared.knownNodesLock.release()
self.sendverack() self.sendverack()

29
src/class_sendDataThread.py
View File

@ -102,14 +102,31 @@ class sendDataThread(threading.Thread):
print 'setting the remote node\'s protocol version in the sendData thread (ID:', id(self), ') to', specifiedRemoteProtocolVersion print 'setting the remote node\'s protocol version in the sendData thread (ID:', id(self), ') to', specifiedRemoteProtocolVersion
self.remoteProtocolVersion = specifiedRemoteProtocolVersion self.remoteProtocolVersion = specifiedRemoteProtocolVersion
elif command == 'advertisepeer':
self.objectHashHolderInstance.holdPeer(data)
elif command == 'sendaddr': elif command == 'sendaddr':
numberOfAddressesInAddrMessage = len(
data)
payload = ''
for hostDetails in data:
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)
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: try:
# To prevent some network analysis, 'leak' the data out self.sock.sendall(datatosend)
# to our peer after waiting a random amount of time
# unless we have a long list of messages in our queue
# to send.
time.sleep(random.randrange(0, 10))
self.sock.sendall(data)
self.lastTimeISentData = int(time.time()) self.lastTimeISentData = int(time.time())
except: except:
print 'sendaddr: self.sock.sendall failed' print 'sendaddr: self.sock.sendall failed'

20
src/class_singleCleaner.py
View File

@ -2,7 +2,11 @@ import threading
import shared import shared
import time import time
import sys import sys
import pickle
import tr#anslate
from helper_sql import * from helper_sql import *
from debug import logger
'''The singleCleaner class is a timer-driven thread that cleans data structures to free memory, resends messages when a remote node doesn't respond, and sends pong messages to keep connections alive if the network isn't busy. '''The singleCleaner class is a timer-driven thread that cleans data structures to free memory, resends messages when a remote node doesn't respond, and sends pong messages to keep connections alive if the network isn't busy.
It cleans these data structures in memory: It cleans these data structures in memory:
@ -124,4 +128,20 @@ class singleCleaner(threading.Thread):
objectType, streamNumber, payload, receivedTime = storedValue objectType, streamNumber, payload, receivedTime = storedValue
if streamNumber in shared.inventorySets: if streamNumber in shared.inventorySets:
shared.inventorySets[streamNumber].add(hash) shared.inventorySets[streamNumber].add(hash)
# Let us write out the knowNodes to disk if there is anything new to write out.
if shared.needToWriteKnownNodesToDisk:
shared.knownNodesLock.acquire()
output = open(shared.appdata + 'knownnodes.dat', 'wb')
try:
pickle.dump(shared.knownNodes, output)
output.close()
except Exception as err:
if "Errno 28" in str(err):
logger.fatal('(while receiveDataThread shared.needToWriteKnownNodesToDisk) Alert: Your disk or data storage volume is full. ')
shared.UISignalQueue.put(('alert', (tr.translateText("MainWindow", "Disk full"), tr.translateText("MainWindow", 'Alert: Your disk or data storage volume is full. Bitmessage will now exit.'), True)))
if shared.daemon:
os._exit(0)
shared.knownNodesLock.release()
shared.needToWriteKnownNodesToDisk = False
time.sleep(300) time.sleep(300)

1
src/shared.py
View File

@ -69,6 +69,7 @@ numberOfPubkeysProcessed = 0
numberOfInventoryLookupsPerformed = 0 numberOfInventoryLookupsPerformed = 0
daemon = False daemon = False
inventorySets = {} # key = streamNumer, value = a set which holds the inventory object hashes that we are aware of. This is used whenever we receive an inv message from a peer to check to see what items are new to us. We don't delete things out of it; instead, the singleCleaner thread clears and refills it every couple hours. inventorySets = {} # key = streamNumer, value = a set which holds the inventory object hashes that we are aware of. This is used whenever we receive an inv message from a peer to check to see what items are new to us. We don't delete things out of it; instead, the singleCleaner thread clears and refills it every couple hours.
needToWriteKnownNodesToDisk = False # If True, the singleCleaner will write it to disk eventually.
#If changed, these values will cause particularly unexpected behavior: You won't be able to either send or receive messages because the proof of work you do (or demand) won't match that done or demanded by others. Don't change them! #If changed, these values will cause particularly unexpected behavior: You won't be able to either send or receive messages because the proof of work you do (or demand) won't match that done or demanded by others. Don't change them!
networkDefaultProofOfWorkNonceTrialsPerByte = 320 #The amount of work that should be performed (and demanded) per byte of the payload. Double this number to double the work. networkDefaultProofOfWorkNonceTrialsPerByte = 320 #The amount of work that should be performed (and demanded) per byte of the payload. Double this number to double the work.