1083 lines
60 KiB
Python
1083 lines
60 KiB
Python
import time
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import threading
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import shared
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import hashlib
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import random
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from struct import unpack, pack
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import sys
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import string
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from subprocess import call # used when the API must execute an outside program
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import traceback
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from pyelliptic.openssl import OpenSSL
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import highlevelcrypto
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from addresses import *
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import helper_generic
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from helper_generic import addDataPadding
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import helper_bitcoin
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import helper_inbox
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import helper_sent
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from helper_sql import *
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import tr
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from debug import logger
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import l10n
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class objectProcessor(threading.Thread):
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"""
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The objectProcessor thread, of which there is only one, receives network
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objecs (msg, broadcast, pubkey, getpubkey) from the receiveDataThreads.
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"""
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def __init__(self):
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threading.Thread.__init__(self)
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"""
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It may be the case that the last time Bitmessage was running, the user
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closed it before it finished processing everything in the
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objectProcessorQueue. Assuming that Bitmessage wasn't closed forcefully,
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it should have saved the data in the queue into the objectprocessorqueue
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table. Let's pull it out.
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"""
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queryreturn = sqlQuery(
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'''SELECT objecttype, data FROM objectprocessorqueue''')
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with shared.objectProcessorQueueSizeLock:
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for row in queryreturn:
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objectType, data = row
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shared.objectProcessorQueueSize += len(data)
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shared.objectProcessorQueue.put((objectType,data))
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sqlExecute('''DELETE FROM objectprocessorqueue''')
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logger.debug('Loaded %s objects from disk into the objectProcessorQueue.' % str(len(queryreturn)))
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def run(self):
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while True:
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objectType, data = shared.objectProcessorQueue.get()
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try:
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if objectType == 0: # getpubkey
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self.processgetpubkey(data)
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elif objectType == 1: #pubkey
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self.processpubkey(data)
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elif objectType == 2: #msg
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self.processmsg(data)
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elif objectType == 3: #broadcast
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self.processbroadcast(data)
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elif objectType == 'checkShutdownVariable': # is more of a command, not an object type. Is used to get this thread past the queue.get() so that it will check the shutdown variable.
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pass
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else:
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logger.critical('Error! Bug! The class_objectProcessor was passed an object type it doesn\'t recognize: %s' % str(objectType))
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except varintDecodeError as e:
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logger.debug("There was a problem with a varint while processing an object. Some details: %s" % e)
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except Exception as e:
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logger.critical("Critical error within objectProcessorThread: \n%s" % traceback.format_exc())
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with shared.objectProcessorQueueSizeLock:
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shared.objectProcessorQueueSize -= len(data) # We maintain objectProcessorQueueSize so that we will slow down requesting objects if too much data accumulates in the queue.
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if shared.shutdown:
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time.sleep(.5) # Wait just a moment for most of the connections to close
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numberOfObjectsThatWereInTheObjectProcessorQueue = 0
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with SqlBulkExecute() as sql:
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while shared.objectProcessorQueueSize > 1:
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objectType, data = shared.objectProcessorQueue.get()
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sql.execute('''INSERT INTO objectprocessorqueue VALUES (?,?)''',
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objectType,data)
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with shared.objectProcessorQueueSizeLock:
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shared.objectProcessorQueueSize -= len(data) # We maintain objectProcessorQueueSize so that we will slow down requesting objects if too much data accumulates in the queue.
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numberOfObjectsThatWereInTheObjectProcessorQueue += 1
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logger.debug('Saved %s objects from the objectProcessorQueue to disk. objectProcessorThread exiting.' % str(numberOfObjectsThatWereInTheObjectProcessorQueue))
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shared.shutdown = 2
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break
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def processgetpubkey(self, data):
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readPosition = 20 # bypass the nonce, time, and object type
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requestedAddressVersionNumber, addressVersionLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += addressVersionLength
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streamNumber, streamNumberLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += streamNumberLength
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if requestedAddressVersionNumber == 0:
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logger.debug('The requestedAddressVersionNumber of the pubkey request is zero. That doesn\'t make any sense. Ignoring it.')
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return
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elif requestedAddressVersionNumber == 1:
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logger.debug('The requestedAddressVersionNumber of the pubkey request is 1 which isn\'t supported anymore. Ignoring it.')
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return
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elif requestedAddressVersionNumber > 4:
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logger.debug('The requestedAddressVersionNumber of the pubkey request is too high. Can\'t understand. Ignoring it.')
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return
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myAddress = ''
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if requestedAddressVersionNumber <= 3 :
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requestedHash = data[readPosition:readPosition + 20]
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if len(requestedHash) != 20:
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logger.debug('The length of the requested hash is not 20 bytes. Something is wrong. Ignoring.')
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return
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logger.info('the hash requested in this getpubkey request is: %s' % requestedHash.encode('hex'))
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if requestedHash in shared.myAddressesByHash: # if this address hash is one of mine
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myAddress = shared.myAddressesByHash[requestedHash]
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elif requestedAddressVersionNumber >= 4:
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requestedTag = data[readPosition:readPosition + 32]
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if len(requestedTag) != 32:
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logger.debug('The length of the requested tag is not 32 bytes. Something is wrong. Ignoring.')
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return
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logger.debug('the tag requested in this getpubkey request is: %s' % requestedTag.encode('hex'))
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if requestedTag in shared.myAddressesByTag:
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myAddress = shared.myAddressesByTag[requestedTag]
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if myAddress == '':
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logger.info('This getpubkey request is not for any of my keys.')
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return
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if decodeAddress(myAddress)[1] != requestedAddressVersionNumber:
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logger.warning('(Within the processgetpubkey function) Someone requested one of my pubkeys but the requestedAddressVersionNumber doesn\'t match my actual address version number. Ignoring.')
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return
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if decodeAddress(myAddress)[2] != streamNumber:
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logger.warning('(Within the processgetpubkey function) Someone requested one of my pubkeys but the stream number on which we heard this getpubkey object doesn\'t match this address\' stream number. Ignoring.')
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return
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if shared.safeConfigGetBoolean(myAddress, 'chan'):
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logger.info('Ignoring getpubkey request because it is for one of my chan addresses. The other party should already have the pubkey.')
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return
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try:
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lastPubkeySendTime = int(shared.config.get(
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myAddress, 'lastpubkeysendtime'))
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except:
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lastPubkeySendTime = 0
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if lastPubkeySendTime > time.time() - 2419200: # If the last time we sent our pubkey was more recent than 28 days ago...
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logger.info('Found getpubkey-requested-item in my list of EC hashes BUT we already sent it recently. Ignoring request. The lastPubkeySendTime is: %s' % lastPubkeySendTime)
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return
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logger.info('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.')
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if requestedAddressVersionNumber == 2:
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shared.workerQueue.put((
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'doPOWForMyV2Pubkey', requestedHash))
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elif requestedAddressVersionNumber == 3:
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shared.workerQueue.put((
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'sendOutOrStoreMyV3Pubkey', requestedHash))
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elif requestedAddressVersionNumber == 4:
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shared.workerQueue.put((
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'sendOutOrStoreMyV4Pubkey', myAddress))
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def processpubkey(self, data):
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pubkeyProcessingStartTime = time.time()
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shared.numberOfPubkeysProcessed += 1
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shared.UISignalQueue.put((
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'updateNumberOfPubkeysProcessed', 'no data'))
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embeddedTime, = unpack('>Q', data[8:16])
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readPosition = 20 # bypass the nonce, time, and object type
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addressVersion, varintLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += varintLength
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streamNumber, varintLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += varintLength
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if addressVersion == 0:
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logger.debug('(Within processpubkey) addressVersion of 0 doesn\'t make sense.')
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return
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if addressVersion > 4 or addressVersion == 1:
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logger.info('This version of Bitmessage cannot handle version %s addresses.' % addressVersion)
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return
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if addressVersion == 2:
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if len(data) < 146: # sanity check. This is the minimum possible length.
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logger.debug('(within processpubkey) payloadLength less than 146. Sanity check failed.')
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return
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bitfieldBehaviors = data[readPosition:readPosition + 4]
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readPosition += 4
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publicSigningKey = data[readPosition:readPosition + 64]
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# Is it possible for a public key to be invalid such that trying to
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# encrypt or sign with it will cause an error? If it is, we should
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# probably test these keys here.
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readPosition += 64
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publicEncryptionKey = data[readPosition:readPosition + 64]
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if len(publicEncryptionKey) < 64:
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logger.debug('publicEncryptionKey length less than 64. Sanity check failed.')
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return
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sha = hashlib.new('sha512')
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sha.update(
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'\x04' + publicSigningKey + '\x04' + publicEncryptionKey)
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ripeHasher = hashlib.new('ripemd160')
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ripeHasher.update(sha.digest())
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ripe = ripeHasher.digest()
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logger.info('within recpubkey, addressVersion: %s, streamNumber: %s \n\
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ripe %s\n\
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publicSigningKey in hex: %s\n\
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publicEncryptionKey in hex: %s' % (addressVersion,
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streamNumber,
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ripe.encode('hex'),
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publicSigningKey.encode('hex'),
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publicEncryptionKey.encode('hex')
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)
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)
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queryreturn = sqlQuery(
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'''SELECT usedpersonally FROM pubkeys WHERE hash=? AND addressversion=? AND usedpersonally='yes' ''', ripe, addressVersion)
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"""
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With the changes in protocol v3, we have to be careful to store pubkey data
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in the database the same way we did before to maintain backwards compatibility
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with what is in people's databases already. This means that for v2 keys, we
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must store the nonce, the time, and then everything else starting with the
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address version.
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"""
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dataToStore = '\x00' * 8 # fake nonce
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dataToStore += data[8:16] # the time
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dataToStore += data[20:] # everything else
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if queryreturn != []: # if this pubkey is already in our database and if we have used it personally:
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logger.info('We HAVE used this pubkey personally. Updating time.')
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t = (ripe, addressVersion, dataToStore, int(time.time()), 'yes')
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else:
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logger.info('We have NOT used this pubkey personally. Inserting in database.')
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t = (ripe, addressVersion, dataToStore, int(time.time()), 'no')
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sqlExecute('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''', *t)
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self.possibleNewPubkey(ripe = ripe)
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if addressVersion == 3:
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if len(data) < 170: # sanity check.
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logger.warning('(within processpubkey) payloadLength less than 170. Sanity check failed.')
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return
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bitfieldBehaviors = data[readPosition:readPosition + 4]
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readPosition += 4
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publicSigningKey = '\x04' + data[readPosition:readPosition + 64]
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readPosition += 64
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publicEncryptionKey = '\x04' + data[readPosition:readPosition + 64]
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readPosition += 64
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specifiedNonceTrialsPerByte, specifiedNonceTrialsPerByteLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += specifiedNonceTrialsPerByteLength
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specifiedPayloadLengthExtraBytes, specifiedPayloadLengthExtraBytesLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += specifiedPayloadLengthExtraBytesLength
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endOfSignedDataPosition = readPosition
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signatureLength, signatureLengthLength = decodeVarint(
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data[readPosition:readPosition + 10])
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readPosition += signatureLengthLength
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signature = data[readPosition:readPosition + signatureLength]
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"""
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With the changes in protocol v3, to maintain backwards compatibility, signatures will be sent
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the 'old' way during an upgrade period and then a 'new' simpler way after that. We will therefore
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check the sig both ways.
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Old way:
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signedData = timePubkeyWasSigned(4 bytes) + addressVersion through extra_bytes
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New way:
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signedData = all of the payload data, from the time down through the extra_bytes
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The timePubkeyWasSigned will be calculated by subtracting 28 days form the embedded expiresTime.
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"""
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expiresTime, = unpack('>Q', data[8:16])
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TTL = 28 * 24 * 60 * 60
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signedData = pack('>I', (expiresTime - TTL)) # the time that the pubkey was signed. 4 bytes.
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signedData += data[20:endOfSignedDataPosition] # the address version down through the payloadLengthExtraBytes
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if highlevelcrypto.verify(signedData, signature, publicSigningKey.encode('hex')):
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logger.info('ECDSA verify passed (within processpubkey, old method)')
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else:
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logger.warning('ECDSA verify failed (within processpubkey, old method)')
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# let us try the newer signature method
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if highlevelcrypto.verify(data[8:endOfSignedDataPosition], signature, publicSigningKey.encode('hex')):
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logger.info('ECDSA verify passed (within processpubkey, new method)')
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else:
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logger.warning('ECDSA verify failed (within processpubkey, new method)')
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return
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sha = hashlib.new('sha512')
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sha.update(publicSigningKey + publicEncryptionKey)
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ripeHasher = hashlib.new('ripemd160')
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ripeHasher.update(sha.digest())
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ripe = ripeHasher.digest()
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logger.info('within recpubkey, addressVersion: %s, streamNumber: %s \n\
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ripe %s\n\
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publicSigningKey in hex: %s\n\
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publicEncryptionKey in hex: %s' % (addressVersion,
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streamNumber,
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ripe.encode('hex'),
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publicSigningKey.encode('hex'),
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publicEncryptionKey.encode('hex')
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)
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)
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"""
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With the changes in protocol v3, we have to be careful to store pubkey data
|
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in the database the same way we did before to maintain backwards compatibility
|
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with what is in people's databases already. This means that for v3 keys, we
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must store the nonce, the time, and then everything else starting with the
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address version.
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"""
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dataToStore = '\x00' * 8 # fake nonce
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dataToStore += data[8:16] # the time
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dataToStore += data[20:] # everything else
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queryreturn = sqlQuery('''SELECT usedpersonally FROM pubkeys WHERE hash=? AND addressversion=? AND usedpersonally='yes' ''', ripe, addressVersion)
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if queryreturn != []: # if this pubkey is already in our database and if we have used it personally:
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logger.info('We HAVE used this pubkey personally. Updating time.')
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t = (ripe, addressVersion, dataToStore, int(time.time()), 'yes')
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else:
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logger.info('We have NOT used this pubkey personally. Inserting in database.')
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t = (ripe, addressVersion, dataToStore, int(time.time()), 'no')
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sqlExecute('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''', *t)
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self.possibleNewPubkey(ripe = ripe)
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if addressVersion == 4:
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if len(data) < 350: # sanity check.
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logger.debug('(within processpubkey) payloadLength less than 350. Sanity check failed.')
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return
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tag = data[readPosition:readPosition + 32]
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if tag not in shared.neededPubkeys:
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logger.info('We don\'t need this v4 pubkey. We didn\'t ask for it.')
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return
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# Let us try to decrypt the pubkey
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toAddress, cryptorObject = shared.neededPubkeys[tag]
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if shared.decryptAndCheckPubkeyPayload(data, toAddress) == 'successful':
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# At this point we know that we have been waiting on this pubkey.
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# This function will command the workerThread to start work on
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# the messages that require it.
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self.possibleNewPubkey(address=toAddress)
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# Display timing data
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timeRequiredToProcessPubkey = time.time(
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) - pubkeyProcessingStartTime
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logger.debug('Time required to process this pubkey: %s' % timeRequiredToProcessPubkey)
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def processmsg(self, data):
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messageProcessingStartTime = time.time()
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shared.numberOfMessagesProcessed += 1
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shared.UISignalQueue.put((
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'updateNumberOfMessagesProcessed', 'no data'))
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readPosition = 20 # bypass the nonce, time, and object type
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"""
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In protocol v2, the next byte(s) was the streamNumber. But starting after
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the protocol v3 upgrade period, the next byte(s) will be a msg version
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number followed by the streamNumber.
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"""
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#msgVersionOutsideEncryption, msgVersionOutsideEncryptionLength = decodeVarint(data[readPosition:readPosition + 9])
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#readPosition += msgVersionOutsideEncryptionLength
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streamNumberAsClaimedByMsg, streamNumberAsClaimedByMsgLength = decodeVarint(
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data[readPosition:readPosition + 9])
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readPosition += streamNumberAsClaimedByMsgLength
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inventoryHash = calculateInventoryHash(data)
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initialDecryptionSuccessful = False
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# Let's check whether this is a message acknowledgement bound for us.
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if data[-32:] in shared.ackdataForWhichImWatching:
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logger.info('This msg IS an acknowledgement bound for me.')
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del shared.ackdataForWhichImWatching[data[-32:]]
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sqlExecute('UPDATE sent SET status=? WHERE ackdata=?',
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'ackreceived', data[-32:])
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shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (data[-32:], tr.translateText("MainWindow",'Acknowledgement of the message received. %1').arg(l10n.formatTimestamp()))))
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return
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else:
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logger.info('This was NOT an acknowledgement bound for me.')
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|
|
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# This is not an acknowledgement bound for me. See if it is a message
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# bound for me by trying to decrypt it with my private keys.
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# This can be simplified quite a bit after 1416175200: # Sun, 16 Nov 2014 22:00:00 GMT
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for key, cryptorObject in shared.myECCryptorObjects.items():
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try:
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decryptedData = cryptorObject.decrypt(data[readPosition:])
|
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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.
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initialDecryptionSuccessful = True
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logger.info('EC decryption successful using key associated with ripe hash: %s. msg did NOT specify version.' % key.encode('hex'))
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|
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# We didn't bypass a msg version above as it is commented out.
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# But the decryption was successful. Which means that there
|
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# wasn't a msg version byte include in this msg.
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msgObjectContainedVersion = False
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break
|
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except Exception as err:
|
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# What if a client sent us a msg with
|
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# a msg version included? We didn't bypass it above. So
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# let's try to decrypt the msg assuming that it is present.
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try:
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decryptedData = cryptorObject.decrypt(data[readPosition+1:]) # notice that we offset by 1 byte compared to the attempt above.
|
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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.
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initialDecryptionSuccessful = True
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logger.info('EC decryption successful using key associated with ripe hash: %s. msg DID specifiy version.' % key.encode('hex'))
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# There IS a msg version byte include in this msg.
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msgObjectContainedVersion = True
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break
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except Exception as err:
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pass
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if not initialDecryptionSuccessful:
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# This is not a message bound for me.
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logger.info('Length of time program spent failing to decrypt this message: %s seconds.' % (time.time() - messageProcessingStartTime,))
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return
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# This is a message bound for me.
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toAddress = shared.myAddressesByHash[
|
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toRipe] # Look up my address based on the RIPE hash.
|
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readPosition = 0
|
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if not msgObjectContainedVersion: # by which I mean "if the msg object didn't have the msg version outside of the encryption". This confusingness will be removed after the protocol v3 upgrade period.
|
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messageVersionWithinEncryption, messageVersionWithinEncryptionLength = decodeVarint(
|
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decryptedData[readPosition:readPosition + 10])
|
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readPosition += messageVersionWithinEncryptionLength
|
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if messageVersionWithinEncryption != 1:
|
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logger.info('Cannot understand message versions other than one. Ignoring message.')
|
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return
|
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else:
|
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messageVersionWithinEncryptionLength = 0 # This variable can disappear after the protocol v3 upgrade period is complete.
|
|
sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint(
|
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decryptedData[readPosition:readPosition + 10])
|
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readPosition += sendersAddressVersionNumberLength
|
|
if sendersAddressVersionNumber == 0:
|
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logger.info('Cannot understand sendersAddressVersionNumber = 0. Ignoring message.')
|
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return
|
|
if sendersAddressVersionNumber > 4:
|
|
logger.info('Sender\'s address version number %s not yet supported. Ignoring message.' % sendersAddressVersionNumber)
|
|
return
|
|
if len(decryptedData) < 170:
|
|
logger.info('Length of the unencrypted data is unreasonably short. Sanity check failed. Ignoring message.')
|
|
return
|
|
sendersStreamNumber, sendersStreamNumberLength = decodeVarint(
|
|
decryptedData[readPosition:readPosition + 10])
|
|
if sendersStreamNumber == 0:
|
|
logger.info('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
|
|
logger.info('sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is %s' % requiredAverageProofOfWorkNonceTrialsPerByte)
|
|
requiredPayloadLengthExtraBytes, varintLength = decodeVarint(
|
|
decryptedData[readPosition:readPosition + 10])
|
|
readPosition += varintLength
|
|
logger.info('sender\'s requiredPayloadLengthExtraBytes is %s' % requiredPayloadLengthExtraBytes)
|
|
endOfThePublicKeyPosition = readPosition # needed for when we store the pubkey in our database of pubkeys for later use.
|
|
if toRipe != decryptedData[readPosition:readPosition + 20]:
|
|
logger.info('The original sender of this message did not send it to you. Someone is attempting a Surreptitious Forwarding Attack.\n\
|
|
See: http://world.std.com/~dtd/sign_encrypt/sign_encrypt7.html \n\
|
|
your toRipe: %s\n\
|
|
embedded destination toRipe: %s' % (toRipe.encode('hex'), decryptedData[readPosition:readPosition + 20].encode('hex'))
|
|
)
|
|
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]
|
|
if not msgObjectContainedVersion:
|
|
# protocol v2. This can be removed after the end of the protocol v3 upgrade period.
|
|
signedData = decryptedData[:positionOfBottomOfAckData]
|
|
else:
|
|
# protocol v3
|
|
signedData = data[8:20] + encodeVarint(1) + encodeVarint(streamNumberAsClaimedByMsg) + decryptedData[:positionOfBottomOfAckData]
|
|
|
|
if not highlevelcrypto.verify(signedData, signature, pubSigningKey.encode('hex')):
|
|
logger.debug('ECDSA verify failed')
|
|
return
|
|
logger.debug('ECDSA verify passed')
|
|
logger.debug('As a matter of intellectual curiosity, here is the Bitcoin address associated with the keys owned by the other person: %s ..and here is the testnet address: %s. 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.' %
|
|
(helper_bitcoin.calculateBitcoinAddressFromPubkey(pubSigningKey), helper_bitcoin.calculateTestnetAddressFromPubkey(pubSigningKey))
|
|
)
|
|
|
|
# calculate the fromRipe.
|
|
sha = hashlib.new('sha512')
|
|
sha.update(pubSigningKey + pubEncryptionKey)
|
|
ripe = hashlib.new('ripemd160')
|
|
ripe.update(sha.digest())
|
|
fromAddress = encodeAddress(
|
|
sendersAddressVersionNumber, sendersStreamNumber, ripe.digest())
|
|
# Let's store the public key in case we want to reply to this
|
|
# person.
|
|
if sendersAddressVersionNumber <= 3:
|
|
sqlExecute(
|
|
'''INSERT INTO pubkeys VALUES (?,?,?,?,?)''',
|
|
ripe.digest(),
|
|
sendersAddressVersionNumber,
|
|
'\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + decryptedData[messageVersionWithinEncryptionLength:endOfThePublicKeyPosition],
|
|
int(time.time()),
|
|
'yes')
|
|
# 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=ripe.digest())
|
|
elif sendersAddressVersionNumber >= 4:
|
|
sqlExecute(
|
|
'''INSERT INTO pubkeys VALUES (?,?,?,?,?)''',
|
|
ripe.digest(),
|
|
sendersAddressVersionNumber,
|
|
'\x00\x00\x00\x00\x00\x00\x00\x01' + decryptedData[messageVersionWithinEncryptionLength:endOfThePublicKeyPosition],
|
|
int(time.time()),
|
|
'yes')
|
|
# 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(address = fromAddress)
|
|
# 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 this is bound for one of my chan
|
|
# addresses then we skip this check; the minimum network POW is
|
|
# fine.
|
|
if decodeAddress(toAddress)[1] >= 3 and not shared.safeConfigGetBoolean(toAddress, 'chan'): # If the toAddress version number is 3 or higher and not one of my chan addresses:
|
|
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 shared.isProofOfWorkSufficient(data, requiredNonceTrialsPerByte, requiredPayloadLengthExtraBytes):
|
|
logger.info('Proof of work in msg is 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
|
|
queryreturn = sqlQuery(
|
|
'''SELECT label FROM blacklist where address=? and enabled='1' ''',
|
|
fromAddress)
|
|
if queryreturn != []:
|
|
logger.info('Message ignored because address is in blacklist.')
|
|
|
|
blockMessage = True
|
|
else: # We're using a whitelist
|
|
queryreturn = sqlQuery(
|
|
'''SELECT label FROM whitelist where address=? and enabled='1' ''',
|
|
fromAddress)
|
|
if queryreturn == []:
|
|
logger.info('Message ignored because address not in whitelist.')
|
|
blockMessage = True
|
|
|
|
toLabel = shared.config.get(toAddress, 'label')
|
|
if toLabel == '':
|
|
toLabel = toAddress
|
|
|
|
if messageEncodingType == 2:
|
|
subject, body = self.decodeType2Message(message)
|
|
logger.info('Message subject (first 100 characters): %s' % repr(subject)[:100])
|
|
elif messageEncodingType == 1:
|
|
body = message
|
|
subject = ''
|
|
elif messageEncodingType == 0:
|
|
logger.info('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.')
|
|
subject = ''
|
|
body = ''
|
|
else:
|
|
body = 'Unknown encoding type.\n\n' + repr(message)
|
|
subject = ''
|
|
# Let us make sure that we haven't already received this message
|
|
if helper_inbox.isMessageAlreadyInInbox(toAddress, fromAddress, subject, body, messageEncodingType):
|
|
logger.info('This msg is already in our inbox. Ignoring it.')
|
|
blockMessage = True
|
|
if not blockMessage:
|
|
if messageEncodingType != 0:
|
|
t = (inventoryHash, toAddress, fromAddress, subject, int(
|
|
time.time()), body, 'inbox', messageEncodingType, 0)
|
|
helper_inbox.insert(t)
|
|
|
|
shared.UISignalQueue.put(('displayNewInboxMessage', (
|
|
inventoryHash, toAddress, fromAddress, subject, body)))
|
|
|
|
# If we are behaving as an API then we might need to run an
|
|
# outside command to let some program know that a new message
|
|
# has arrived.
|
|
if shared.safeConfigGetBoolean('bitmessagesettings', 'apienabled'):
|
|
try:
|
|
apiNotifyPath = shared.config.get(
|
|
'bitmessagesettings', 'apinotifypath')
|
|
except:
|
|
apiNotifyPath = ''
|
|
if apiNotifyPath != '':
|
|
call([apiNotifyPath, "newMessage"])
|
|
|
|
# Let us now check and see whether our receiving address is
|
|
# behaving as a mailing list
|
|
if shared.safeConfigGetBoolean(toAddress, 'mailinglist'):
|
|
try:
|
|
mailingListName = shared.config.get(
|
|
toAddress, 'mailinglistname')
|
|
except:
|
|
mailingListName = ''
|
|
# Let us send out this message as a broadcast
|
|
subject = self.addMailingListNameToSubject(
|
|
subject, mailingListName)
|
|
# Let us now send this message out as a broadcast
|
|
message = time.strftime("%a, %Y-%m-%d %H:%M:%S UTC", time.gmtime(
|
|
)) + ' Message ostensibly from ' + fromAddress + ':\n\n' + body
|
|
fromAddress = toAddress # The fromAddress for the broadcast that we are about to send is the toAddress (my address) for the msg message we are currently processing.
|
|
ackdataForBroadcast = OpenSSL.rand(
|
|
32) # We don't actually need the ackdataForBroadcast 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, ackdataForBroadcast, int(
|
|
time.time()), 'broadcastqueued', 1, 1, 'sent', 2)
|
|
helper_sent.insert(t)
|
|
|
|
shared.UISignalQueue.put(('displayNewSentMessage', (
|
|
toAddress, '[Broadcast subscribers]', fromAddress, subject, message, ackdataForBroadcast)))
|
|
shared.workerQueue.put(('sendbroadcast', ''))
|
|
|
|
if self.ackDataHasAVaildHeader(ackData):
|
|
shared.checkAndShareObjectWithPeers(ackData[24:])
|
|
|
|
# Display timing data
|
|
timeRequiredToAttemptToDecryptMessage = time.time(
|
|
) - messageProcessingStartTime
|
|
shared.successfullyDecryptMessageTimings.append(
|
|
timeRequiredToAttemptToDecryptMessage)
|
|
sum = 0
|
|
for item in shared.successfullyDecryptMessageTimings:
|
|
sum += item
|
|
logger.debug('Time to decrypt this message successfully: %s\n\
|
|
Average time for all message decryption successes since startup: %s.' %
|
|
(timeRequiredToAttemptToDecryptMessage, sum / len(shared.successfullyDecryptMessageTimings))
|
|
)
|
|
|
|
|
|
def processbroadcast(self, data):
|
|
messageProcessingStartTime = time.time()
|
|
shared.numberOfBroadcastsProcessed += 1
|
|
shared.UISignalQueue.put((
|
|
'updateNumberOfBroadcastsProcessed', 'no data'))
|
|
inventoryHash = calculateInventoryHash(data)
|
|
readPosition = 20 # bypass the nonce, time, and object type
|
|
broadcastVersion, broadcastVersionLength = decodeVarint(
|
|
data[readPosition:readPosition + 9])
|
|
readPosition += broadcastVersionLength
|
|
if broadcastVersion < 1 or broadcastVersion > 5:
|
|
logger.info('Cannot decode incoming broadcast versions higher than 5. Assuming the sender isn\'t being silly, you should upgrade Bitmessage because this message shall be ignored.')
|
|
return
|
|
if broadcastVersion == 1:
|
|
logger.info('Version 1 broadcasts are no longer supported. Not processing it at all.')
|
|
if broadcastVersion in [2,4]:
|
|
"""
|
|
v2 (and later v4) broadcasts are encrypted the same way the msgs were encrypted. To see if we are interested in a
|
|
v2 broadcast, we try to decrypt it. This was replaced with v3 (and later v5) broadcasts which include a tag which
|
|
we check instead, just like we do with v4 pubkeys.
|
|
v2 and v3 broadcasts should be completely obsolete after the protocol v3 upgrade period and some code can be simplified.
|
|
"""
|
|
cleartextStreamNumber, cleartextStreamNumberLength = decodeVarint(
|
|
data[readPosition:readPosition + 10])
|
|
readPosition += cleartextStreamNumberLength
|
|
signedData = data[8:readPosition] # This doesn't end up being used if the broadcastVersion is 2
|
|
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
|
|
logger.info('EC decryption successful using key associated with ripe hash: %s' % 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.
|
|
logger.debug('Length of time program spent failing to decrypt this v2 broadcast: %s seconds.' % (time.time() - messageProcessingStartTime,))
|
|
return
|
|
# At this point this is a broadcast I have decrypted and thus am
|
|
# interested in.
|
|
readPosition = 0
|
|
if broadcastVersion == 2:
|
|
signedBroadcastVersion, signedBroadcastVersionLength = decodeVarint(
|
|
decryptedData[:10])
|
|
readPosition += signedBroadcastVersionLength
|
|
|
|
beginningOfPubkeyPosition = readPosition # used when we add the pubkey to our pubkey table. This variable can be disposed of after the protocol v3 upgrade period because it will necessarily be at the beginning of the decryptedData; ie it will definitely equal 0
|
|
sendersAddressVersion, sendersAddressVersionLength = decodeVarint(
|
|
decryptedData[readPosition:readPosition + 9])
|
|
if sendersAddressVersion < 2 or sendersAddressVersion > 3:
|
|
logger.info('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:
|
|
logger.info('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
|
|
logger.debug('sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is %s' % requiredAverageProofOfWorkNonceTrialsPerByte)
|
|
requiredPayloadLengthExtraBytes, varintLength = decodeVarint(
|
|
decryptedData[readPosition:readPosition + 10])
|
|
readPosition += varintLength
|
|
logger.debug('sender\'s requiredPayloadLengthExtraBytes is %s' % requiredPayloadLengthExtraBytes)
|
|
endOfPubkeyPosition = readPosition
|
|
|
|
sha = hashlib.new('sha512')
|
|
sha.update(sendersPubSigningKey + sendersPubEncryptionKey)
|
|
ripe = hashlib.new('ripemd160')
|
|
ripe.update(sha.digest())
|
|
|
|
if toRipe != ripe.digest():
|
|
logger.info('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]
|
|
if broadcastVersion == 2: # this can be removed after the protocol v3 upgrade period
|
|
signedData = decryptedData[:readPositionAtBottomOfMessage]
|
|
else:
|
|
signedData += decryptedData[:readPositionAtBottomOfMessage]
|
|
if not highlevelcrypto.verify(signedData, signature, sendersPubSigningKey.encode('hex')):
|
|
logger.debug('ECDSA verify failed')
|
|
return
|
|
logger.debug('ECDSA verify passed')
|
|
# verify passed
|
|
|
|
# Let's store the public key in case we want to reply to this
|
|
# person.
|
|
sqlExecute('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''',
|
|
ripe.digest(),
|
|
sendersAddressVersion,
|
|
'\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF' + '\xFF\xFF\xFF\xFF' + decryptedData[beginningOfPubkeyPosition:endOfPubkeyPosition],
|
|
int(time.time()),
|
|
'yes')
|
|
# 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=ripe.digest())
|
|
|
|
fromAddress = encodeAddress(
|
|
sendersAddressVersion, sendersStream, ripe.digest())
|
|
with shared.printLock:
|
|
print 'fromAddress:', fromAddress
|
|
|
|
if messageEncodingType == 2:
|
|
subject, body = self.decodeType2Message(message)
|
|
logger.info('Broadcast subject (first 100 characters): %s' % repr(subject)[:100])
|
|
elif messageEncodingType == 1:
|
|
body = message
|
|
subject = ''
|
|
elif messageEncodingType == 0:
|
|
logger.info('messageEncodingType == 0. Doing nothing with the message.')
|
|
else:
|
|
body = 'Unknown encoding type.\n\n' + repr(message)
|
|
subject = ''
|
|
|
|
toAddress = '[Broadcast subscribers]'
|
|
if messageEncodingType != 0:
|
|
if helper_inbox.isMessageAlreadyInInbox(toAddress, fromAddress, subject, body, messageEncodingType):
|
|
logger.info('This broadcast is already in our inbox. Ignoring it.')
|
|
else:
|
|
t = (inventoryHash, toAddress, fromAddress, subject, int(
|
|
time.time()), body, 'inbox', messageEncodingType, 0)
|
|
helper_inbox.insert(t)
|
|
|
|
shared.UISignalQueue.put(('displayNewInboxMessage', (
|
|
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
|
|
logger.info('Time spent processing this interesting broadcast: %s' % (time.time() - messageProcessingStartTime,))
|
|
|
|
if broadcastVersion in [3,5]:
|
|
# broadcast version 3 should be completely obsolete after the end of the protocol v3 upgrade period
|
|
cleartextStreamNumber, cleartextStreamNumberLength = decodeVarint(
|
|
data[readPosition:readPosition + 10])
|
|
readPosition += cleartextStreamNumberLength
|
|
embeddedTag = data[readPosition:readPosition+32]
|
|
readPosition += 32
|
|
if embeddedTag not in shared.MyECSubscriptionCryptorObjects:
|
|
logger.debug('We\'re not interested in this broadcast.')
|
|
return
|
|
# We are interested in this broadcast because of its tag.
|
|
signedData = data[8:readPosition] # We're going to add some more data which is signed further down.
|
|
cryptorObject = shared.MyECSubscriptionCryptorObjects[embeddedTag]
|
|
try:
|
|
decryptedData = cryptorObject.decrypt(data[readPosition:])
|
|
logger.debug('EC decryption successful')
|
|
except Exception as err:
|
|
logger.debug('Broadcast version %s decryption Unsuccessful.' % broadcastVersion)
|
|
return
|
|
|
|
# broadcast version 3 includes the broadcast version at the beginning
|
|
# of the decryptedData. Broadcast version 5 doesn't.
|
|
readPosition = 0
|
|
if broadcastVersion == 3: # This section can be removed after the protocol v3 upgrade period
|
|
signedBroadcastVersion, signedBroadcastVersionLength = decodeVarint(
|
|
decryptedData[:10])
|
|
readPosition += signedBroadcastVersionLength
|
|
|
|
beginningOfPubkeyPosition = readPosition # used when we add the pubkey to our pubkey table
|
|
sendersAddressVersion, sendersAddressVersionLength = decodeVarint(
|
|
decryptedData[readPosition:readPosition + 9])
|
|
if sendersAddressVersion < 4:
|
|
logger.info('Cannot decode senderAddressVersion less than 4 for broadcast version number 3 or 4. 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:
|
|
logger.info('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
|
|
logger.debug('sender\'s requiredAverageProofOfWorkNonceTrialsPerByte is %s' % requiredAverageProofOfWorkNonceTrialsPerByte)
|
|
requiredPayloadLengthExtraBytes, varintLength = decodeVarint(
|
|
decryptedData[readPosition:readPosition + 10])
|
|
readPosition += varintLength
|
|
logger.debug('sender\'s requiredPayloadLengthExtraBytes is %s' % requiredPayloadLengthExtraBytes)
|
|
endOfPubkeyPosition = readPosition
|
|
|
|
sha = hashlib.new('sha512')
|
|
sha.update(sendersPubSigningKey + sendersPubEncryptionKey)
|
|
ripeHasher = hashlib.new('ripemd160')
|
|
ripeHasher.update(sha.digest())
|
|
calculatedRipe = ripeHasher.digest()
|
|
|
|
calculatedTag = hashlib.sha512(hashlib.sha512(encodeVarint(
|
|
sendersAddressVersion) + encodeVarint(sendersStream) + calculatedRipe).digest()).digest()[32:]
|
|
if calculatedTag != embeddedTag:
|
|
logger.debug('The tag and 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]
|
|
if broadcastVersion == 3: # broadcastVersion 3 should be completely unused after the end of the protocol v3 upgrade period
|
|
signedData = decryptedData[:readPositionAtBottomOfMessage]
|
|
elif broadcastVersion == 5:
|
|
signedData += decryptedData[:readPositionAtBottomOfMessage]
|
|
if not highlevelcrypto.verify(signedData, signature, sendersPubSigningKey.encode('hex')):
|
|
logger.debug('ECDSA verify failed')
|
|
return
|
|
logger.debug('ECDSA verify passed')
|
|
# verify passed
|
|
|
|
fromAddress = encodeAddress(
|
|
sendersAddressVersion, sendersStream, calculatedRipe)
|
|
logger.info('fromAddress: %s' % fromAddress)
|
|
|
|
# Let's store the public key in case we want to reply to this person.
|
|
sqlExecute(
|
|
'''INSERT INTO pubkeys VALUES (?,?,?,?,?)''',
|
|
calculatedRipe,
|
|
sendersAddressVersion,
|
|
'\x00\x00\x00\x00\x00\x00\x00\x01' + decryptedData[beginningOfPubkeyPosition:endOfPubkeyPosition],
|
|
int(time.time()),
|
|
'yes')
|
|
# 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(address = fromAddress)
|
|
|
|
if messageEncodingType == 2:
|
|
subject, body = self.decodeType2Message(message)
|
|
logger.info('Broadcast subject (first 100 characters): %s' % repr(subject)[:100])
|
|
elif messageEncodingType == 1:
|
|
body = message
|
|
subject = ''
|
|
elif messageEncodingType == 0:
|
|
logger.info('messageEncodingType == 0. Doing nothing with the message.')
|
|
else:
|
|
body = 'Unknown encoding type.\n\n' + repr(message)
|
|
subject = ''
|
|
|
|
toAddress = '[Broadcast subscribers]'
|
|
if messageEncodingType != 0:
|
|
if helper_inbox.isMessageAlreadyInInbox(toAddress, fromAddress, subject, body, messageEncodingType):
|
|
logger.info('This broadcast is already in our inbox. Ignoring it.')
|
|
else:
|
|
t = (inventoryHash, toAddress, fromAddress, subject, int(
|
|
time.time()), body, 'inbox', messageEncodingType, 0)
|
|
helper_inbox.insert(t)
|
|
|
|
shared.UISignalQueue.put(('displayNewInboxMessage', (
|
|
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
|
|
logger.debug('Time spent processing this interesting broadcast: %s' % (time.time() - messageProcessingStartTime,))
|
|
|
|
# We have inserted a pubkey into our pubkey table which we received from a
|
|
# pubkey, msg, or broadcast message. It might be one that we have been
|
|
# waiting for. Let's check.
|
|
def possibleNewPubkey(self, ripe=None, address=None):
|
|
# For address versions <= 3, we wait on a key with the correct ripe hash
|
|
if ripe != None:
|
|
if ripe in shared.neededPubkeys:
|
|
logger.info('We have been awaiting the arrival of this pubkey.')
|
|
del shared.neededPubkeys[ripe]
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='doingmsgpow' WHERE toripe=? AND (status='awaitingpubkey' or status='doingpubkeypow') and folder='sent' ''',
|
|
ripe)
|
|
shared.workerQueue.put(('sendmessage', ''))
|
|
else:
|
|
logger.debug('We don\'t need this pub key. We didn\'t ask for it. Pubkey hash: %s' % ripe.encode('hex'))
|
|
# For address versions >= 4, we wait on a pubkey with the correct tag.
|
|
# Let us create the tag from the address and see if we were waiting
|
|
# for it.
|
|
elif address != None:
|
|
status, addressVersion, streamNumber, ripe = decodeAddress(address)
|
|
tag = hashlib.sha512(hashlib.sha512(encodeVarint(
|
|
addressVersion) + encodeVarint(streamNumber) + ripe).digest()).digest()[32:]
|
|
if tag in shared.neededPubkeys:
|
|
logger.info('We have been awaiting the arrival of this pubkey.')
|
|
del shared.neededPubkeys[tag]
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='doingmsgpow' WHERE toripe=? AND (status='awaitingpubkey' or status='doingpubkeypow') and folder='sent' ''',
|
|
ripe)
|
|
shared.workerQueue.put(('sendmessage', ''))
|
|
|
|
def ackDataHasAVaildHeader(self, ackData):
|
|
if len(ackData) < shared.Header.size:
|
|
logger.info('The length of ackData is unreasonably short. Not sending ackData.')
|
|
return False
|
|
|
|
magic,command,payloadLength,checksum = shared.Header.unpack(ackData[:shared.Header.size])
|
|
if magic != 0xE9BEB4D9:
|
|
logger.info('Ackdata magic bytes were wrong. Not sending ackData.')
|
|
return False
|
|
payload = ackData[shared.Header.size:]
|
|
if len(payload) != payloadLength:
|
|
logger.info('ackData payload length doesn\'t match the payload length specified in the header. Not sending ackdata.')
|
|
return False
|
|
if payloadLength > 1600100: # ~1.6 MB which is the maximum possible size of an inv message.
|
|
"""
|
|
The largest message should be either an inv or a getdata message at 1.6 MB in size.
|
|
That doesn't mean that the object may be that big. The
|
|
shared.checkAndShareObjectWithPeers function will verify that it is no larger than
|
|
2^18 bytes.
|
|
"""
|
|
return False
|
|
if checksum != hashlib.sha512(payload).digest()[0:4]: # test the checksum in the message.
|
|
logger.info('ackdata checksum wrong. Not sending ackdata.')
|
|
return False
|
|
command = command.rstrip('\x00')
|
|
if command != 'object':
|
|
return False
|
|
return True
|
|
|
|
def decodeType2Message(self, message):
|
|
bodyPositionIndex = string.find(message, '\nBody:')
|
|
if bodyPositionIndex > 1:
|
|
subject = message[8:bodyPositionIndex]
|
|
# Only save and show the first 500 characters of the subject.
|
|
# Any more is probably an attack.
|
|
subject = subject[:500]
|
|
body = message[bodyPositionIndex + 6:]
|
|
else:
|
|
subject = ''
|
|
body = message
|
|
# Throw away any extra lines (headers) after the subject.
|
|
if subject:
|
|
subject = subject.splitlines()[0]
|
|
return subject, body
|
|
|
|
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 decodeType2Message(self, message):
|
|
bodyPositionIndex = string.find(message, '\nBody:')
|
|
if bodyPositionIndex > 1:
|
|
subject = message[8:bodyPositionIndex]
|
|
# Only save and show the first 500 characters of the subject.
|
|
# Any more is probably an attack.
|
|
subject = subject[:500]
|
|
body = message[bodyPositionIndex + 6:]
|
|
else:
|
|
subject = ''
|
|
body = message
|
|
# Throw away any extra lines (headers) after the subject.
|
|
if subject:
|
|
subject = subject.splitlines()[0]
|
|
return subject, body
|