cis-kuldeep/PyBitmessage-2021-04-27
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Minor refactoring

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This commit is contained in:
Jonathan Warren 2015-02-20 17:33:17 -05:00
parent 0833938ea3
commit 3527983fa6
1 changed files with 60 additions and 100 deletions
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90
src/class_receiveDataThread.py
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@ -151,9 +151,8 @@ class receiveDataThread(threading.Thread):
# just received valid data from it. So update the knownNodes list so # just received valid data from it. So update the knownNodes list so
# that other peers can be made aware of its existance. # 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). 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() with shared.knownNodesLock:
shared.knownNodes[self.streamNumber][self.peer] = int(time.time()) shared.knownNodes[self.streamNumber][self.peer] = int(time.time())
shared.knownNodesLock.release()
#Strip the nulls #Strip the nulls
command = command.rstrip('\x00') command = command.rstrip('\x00')
@ -488,35 +487,33 @@ class receiveDataThread(threading.Thread):
self.sendDataThreadQueue.put((0, 'sendRawData', shared.CreatePacket('object',payload))) self.sendDataThreadQueue.put((0, 'sendRawData', shared.CreatePacket('object',payload)))
def _checkIPv4Address(self, host, hostFromAddrMessage): def _checkIPv4Address(self, host, hostStandardFormat):
# print 'hostFromAddrMessage', hostFromAddrMessage # print 'hostStandardFormat', hostStandardFormat
if host[0] == '\x7F': if host[0] == '\x7F':
print 'Ignoring IP address in loopback range:', hostFromAddrMessage print 'Ignoring IP address in loopback range:', hostStandardFormat
return False return False
if host[0] == '\x0A': if host[0] == '\x0A':
print 'Ignoring IP address in private range:', hostFromAddrMessage print 'Ignoring IP address in private range:', hostStandardFormat
return False return False
if host[0:2] == '\xC0\xA8': if host[0:2] == '\xC0\xA8':
print 'Ignoring IP address in private range:', hostFromAddrMessage print 'Ignoring IP address in private range:', hostStandardFormat
return False return False
return True return True
def _checkIPv6Address(self, host, hostFromAddrMessage): def _checkIPv6Address(self, host, hostStandardFormat):
if host == ('\x00' * 15) + '\x01': if host == ('\x00' * 15) + '\x01':
print 'Ignoring loopback address:', hostFromAddrMessage print 'Ignoring loopback address:', hostStandardFormat
return False return False
if host[0] == '\xFE' and (ord(host[1]) & 0xc0) == 0x80: if host[0] == '\xFE' and (ord(host[1]) & 0xc0) == 0x80:
print 'Ignoring local address:', hostFromAddrMessage print 'Ignoring local address:', hostStandardFormat
return False return False
if (ord(host[0]) & 0xfe) == 0xfc: if (ord(host[0]) & 0xfe) == 0xfc:
print 'Ignoring unique local address:', hostFromAddrMessage print 'Ignoring unique local address:', hostStandardFormat
return False return False
return True return True
# We have received an addr message. # We have received an addr message.
def recaddr(self, data): def recaddr(self, data):
#listOfAddressDetailsToBroadcastToPeers = []
numberOfAddressesIncluded = 0
numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint( numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint(
data[:10]) data[:10])
@ -531,91 +528,56 @@ class receiveDataThread(threading.Thread):
return return
for i in range(0, numberOfAddressesIncluded): for i in range(0, numberOfAddressesIncluded):
try:
fullHost = data[20 + lengthOfNumberOfAddresses + (38 * i):36 + lengthOfNumberOfAddresses + (38 * i)] fullHost = data[20 + lengthOfNumberOfAddresses + (38 * i):36 + lengthOfNumberOfAddresses + (38 * i)]
except Exception as err:
with shared.printLock:
sys.stderr.write(
'ERROR TRYING TO UNPACK recaddr (recaddrHost). 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 + ( recaddrStream, = unpack('>I', data[8 + lengthOfNumberOfAddresses + (
38 * i):12 + lengthOfNumberOfAddresses + (38 * i)]) 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: 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. 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 continue
try:
recaddrServices, = unpack('>Q', data[12 + lengthOfNumberOfAddresses + ( recaddrServices, = unpack('>Q', data[12 + lengthOfNumberOfAddresses + (
38 * i):20 + lengthOfNumberOfAddresses + (38 * i)]) 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 + ( recaddrPort, = unpack('>H', data[36 + lengthOfNumberOfAddresses + (
38 * i):38 + lengthOfNumberOfAddresses + (38 * i)]) 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
if fullHost[0:12] == '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF': if fullHost[0:12] == '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':
ipv4Host = fullHost[12:] ipv4Host = fullHost[12:]
hostFromAddrMessage = socket.inet_ntop(socket.AF_INET, ipv4Host) hostStandardFormat = socket.inet_ntop(socket.AF_INET, ipv4Host)
if not self._checkIPv4Address(ipv4Host, hostFromAddrMessage): if not self._checkIPv4Address(ipv4Host, hostStandardFormat):
continue continue
else: else:
hostFromAddrMessage = socket.inet_ntop(socket.AF_INET6, fullHost) hostStandardFormat = socket.inet_ntop(socket.AF_INET6, fullHost)
if hostFromAddrMessage == "": if hostStandardFormat == "":
# This can happen on Windows systems which are not 64-bit compatible # This can happen on Windows systems which are not 64-bit compatible
# so let us drop the IPv6 address. # so let us drop the IPv6 address.
continue continue
if not self._checkIPv6Address(fullHost, hostFromAddrMessage): if not self._checkIPv6Address(fullHost, hostStandardFormat):
continue continue
timeSomeoneElseReceivedMessageFromThisNode, = unpack('>Q', data[lengthOfNumberOfAddresses + ( timeSomeoneElseReceivedMessageFromThisNode, = unpack('>Q', data[lengthOfNumberOfAddresses + (
38 * i):8 + lengthOfNumberOfAddresses + (38 * i)]) # This is the 'time' value in the received addr message. 64-bit. 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. 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() with shared.knownNodesLock:
shared.knownNodes[recaddrStream] = {} shared.knownNodes[recaddrStream] = {}
shared.knownNodesLock.release() peerFromAddrMessage = shared.Peer(hostStandardFormat, recaddrPort)
peerFromAddrMessage = shared.Peer(hostFromAddrMessage, recaddrPort)
if peerFromAddrMessage not in shared.knownNodes[recaddrStream]: if peerFromAddrMessage 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. 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() with shared.knownNodesLock:
shared.knownNodes[recaddrStream][peerFromAddrMessage] = ( shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode
timeSomeoneElseReceivedMessageFromThisNode)
shared.knownNodesLock.release()
with shared.printLock: with shared.printLock:
print 'added new node', peerFromAddrMessage, 'to knownNodes in stream', recaddrStream print 'added new node', peerFromAddrMessage, 'to knownNodes in stream', recaddrStream
shared.needToWriteKnownNodesToDisk = True shared.needToWriteKnownNodesToDisk = True
hostDetails = ( hostDetails = (
timeSomeoneElseReceivedMessageFromThisNode, timeSomeoneElseReceivedMessageFromThisNode,
recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort) recaddrStream, recaddrServices, hostStandardFormat, recaddrPort)
#listOfAddressDetailsToBroadcastToPeers.append(hostDetails)
shared.broadcastToSendDataQueues(( shared.broadcastToSendDataQueues((
self.streamNumber, 'advertisepeer', hostDetails)) self.streamNumber, 'advertisepeer', hostDetails))
else: else:
timeLastReceivedMessageFromThisNode = shared.knownNodes[recaddrStream][ timeLastReceivedMessageFromThisNode = shared.knownNodes[recaddrStream][
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. peerFromAddrMessage]
if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())): if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())+900): # 900 seconds for wiggle-room in case other nodes' clocks aren't quite right.
shared.knownNodesLock.acquire() with shared.knownNodesLock:
shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode
shared.knownNodesLock.release()
#if listOfAddressDetailsToBroadcastToPeers != []:
# self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers)
with shared.printLock: with shared.printLock:
print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.' print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.'
@ -633,7 +595,7 @@ class receiveDataThread(threading.Thread):
# We are going to share a maximum number of 1000 addrs with our peer. # 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 # 500 from this stream, 250 from the left child stream, and 250 from
# the right child stream. # the right child stream.
shared.knownNodesLock.acquire() with shared.knownNodesLock:
if len(shared.knownNodes[self.streamNumber]) > 0: if len(shared.knownNodes[self.streamNumber]) > 0:
for i in range(500): for i in range(500):
peer, = random.sample(shared.knownNodes[self.streamNumber], 1) peer, = random.sample(shared.knownNodes[self.streamNumber], 1)
@ -657,7 +619,6 @@ class receiveDataThread(threading.Thread):
continue continue
addrsInChildStreamRight[peer] = shared.knownNodes[ addrsInChildStreamRight[peer] = shared.knownNodes[
(self.streamNumber * 2) + 1][peer] (self.streamNumber * 2) + 1][peer]
shared.knownNodesLock.release()
numberOfAddressesInAddrMessage = 0 numberOfAddressesInAddrMessage = 0
payload = '' payload = ''
# print 'addrsInMyStream.items()', addrsInMyStream.items() # print 'addrsInMyStream.items()', addrsInMyStream.items()
@ -771,10 +732,9 @@ class receiveDataThread(threading.Thread):
# in this version message. Let us inform the sendDataThread. # in this version message. Let us inform the sendDataThread.
self.sendDataThreadQueue.put((0, 'setRemoteProtocolVersion', self.remoteProtocolVersion)) self.sendDataThreadQueue.put((0, 'setRemoteProtocolVersion', self.remoteProtocolVersion))
shared.knownNodesLock.acquire() with shared.knownNodesLock:
shared.knownNodes[self.streamNumber][shared.Peer(self.peer.host, self.remoteNodeIncomingPort)] = int(time.time()) shared.knownNodes[self.streamNumber][shared.Peer(self.peer.host, self.remoteNodeIncomingPort)] = int(time.time())
shared.needToWriteKnownNodesToDisk = True shared.needToWriteKnownNodesToDisk = True
shared.knownNodesLock.release()
self.sendverack() self.sendverack()
if self.initiatedConnection == False: if self.initiatedConnection == False: