998 lines
56 KiB
Python
998 lines
56 KiB
Python
from __future__ import division
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import threading
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import shared
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import time
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from time import strftime, localtime, gmtime
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import random
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from subprocess import call # used when the API must execute an outside program
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from addresses import *
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import highlevelcrypto
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import proofofwork
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import sys
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import tr
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from bmconfigparser import BMConfigParser
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from debug import logger
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import defaults
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from helper_sql import *
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import helper_inbox
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from helper_generic import addDataPadding
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import helper_msgcoding
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from helper_threading import *
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from inventory import Inventory, PendingUpload
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import l10n
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import protocol
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import queues
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import state
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from binascii import hexlify, unhexlify
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# This thread, of which there is only one, does the heavy lifting:
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# calculating POWs.
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def sizeof_fmt(num, suffix='h/s'):
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for unit in ['','k','M','G','T','P','E','Z']:
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if abs(num) < 1000.0:
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return "%3.1f%s%s" % (num, unit, suffix)
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num /= 1024.0
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return "%.1f%s%s" % (num, 'Yi', suffix)
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class singleWorker(threading.Thread, StoppableThread):
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def __init__(self):
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# QThread.__init__(self, parent)
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threading.Thread.__init__(self, name="singleWorker")
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self.initStop()
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proofofwork.init()
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def stopThread(self):
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try:
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queues.workerQueue.put(("stopThread", "data"))
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except:
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pass
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super(singleWorker, self).stopThread()
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def run(self):
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while not state.sqlReady and state.shutdown == 0:
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self.stop.wait(2)
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if state.shutdown > 0:
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return
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# Initialize the neededPubkeys dictionary.
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queryreturn = sqlQuery(
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'''SELECT DISTINCT toaddress FROM sent WHERE (status='awaitingpubkey' AND folder='sent')''')
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for row in queryreturn:
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toAddress, = row
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toStatus, toAddressVersionNumber, toStreamNumber, toRipe = decodeAddress(toAddress)
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if toAddressVersionNumber <= 3 :
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state.neededPubkeys[toAddress] = 0
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elif toAddressVersionNumber >= 4:
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doubleHashOfAddressData = hashlib.sha512(hashlib.sha512(encodeVarint(
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toAddressVersionNumber) + encodeVarint(toStreamNumber) + toRipe).digest()).digest()
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privEncryptionKey = doubleHashOfAddressData[:32] # Note that this is the first half of the sha512 hash.
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tag = doubleHashOfAddressData[32:]
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state.neededPubkeys[tag] = (toAddress, highlevelcrypto.makeCryptor(hexlify(privEncryptionKey))) # We'll need this for when we receive a pubkey reply: it will be encrypted and we'll need to decrypt it.
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# Initialize the shared.ackdataForWhichImWatching data structure
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queryreturn = sqlQuery(
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'''SELECT ackdata FROM sent WHERE status = 'msgsent' ''')
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for row in queryreturn:
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ackdata, = row
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logger.info('Watching for ackdata ' + hexlify(ackdata))
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shared.ackdataForWhichImWatching[ackdata] = 0
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# Fix legacy (headerless) watched ackdata to include header
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for oldack in shared.ackdataForWhichImWatching.keys():
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if (len(oldack)==32):
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# attach legacy header, always constant (msg/1/1)
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newack = '\x00\x00\x00\x02\x01\x01' + oldack
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shared.ackdataForWhichImWatching[newack] = 0
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sqlExecute('UPDATE sent SET ackdata=? WHERE ackdata=?',
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newack, oldack )
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del shared.ackdataForWhichImWatching[oldack]
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self.stop.wait(
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10) # give some time for the GUI to start before we start on existing POW tasks.
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if state.shutdown == 0:
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# just in case there are any pending tasks for msg
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# messages that have yet to be sent.
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queues.workerQueue.put(('sendmessage', ''))
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# just in case there are any tasks for Broadcasts
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# that have yet to be sent.
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queues.workerQueue.put(('sendbroadcast', ''))
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while state.shutdown == 0:
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self.busy = 0
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command, data = queues.workerQueue.get()
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self.busy = 1
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if command == 'sendmessage':
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try:
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self.sendMsg()
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except:
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pass
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elif command == 'sendbroadcast':
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try:
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self.sendBroadcast()
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except:
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pass
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elif command == 'doPOWForMyV2Pubkey':
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try:
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self.doPOWForMyV2Pubkey(data)
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except:
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pass
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elif command == 'sendOutOrStoreMyV3Pubkey':
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try:
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self.sendOutOrStoreMyV3Pubkey(data)
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except:
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pass
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elif command == 'sendOutOrStoreMyV4Pubkey':
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try:
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self.sendOutOrStoreMyV4Pubkey(data)
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except:
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pass
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elif command == 'resetPoW':
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try:
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proofofwork.resetPoW()
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except:
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pass
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elif command == 'stopThread':
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self.busy = 0
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return
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else:
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logger.error('Probable programming error: The command sent to the workerThread is weird. It is: %s\n' % command)
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queues.workerQueue.task_done()
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logger.info("Quitting...")
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def doPOWForMyV2Pubkey(self, hash): # This function also broadcasts out the pubkey message once it is done with the POW
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# Look up my stream number based on my address hash
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"""configSections = shared.config.addresses()
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for addressInKeysFile in configSections:
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if addressInKeysFile <> 'bitmessagesettings':
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status,addressVersionNumber,streamNumber,hashFromThisParticularAddress = decodeAddress(addressInKeysFile)
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if hash == hashFromThisParticularAddress:
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myAddress = addressInKeysFile
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break"""
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myAddress = shared.myAddressesByHash[hash]
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status, addressVersionNumber, streamNumber, hash = decodeAddress(
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myAddress)
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TTL = int(28 * 24 * 60 * 60 + random.randrange(-300, 300))# 28 days from now plus or minus five minutes
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embeddedTime = int(time.time() + TTL)
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payload = pack('>Q', (embeddedTime))
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payload += '\x00\x00\x00\x01' # object type: pubkey
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payload += encodeVarint(addressVersionNumber) # Address version number
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payload += encodeVarint(streamNumber)
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payload += protocol.getBitfield(myAddress) # bitfield of features supported by me (see the wiki).
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try:
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privSigningKeyBase58 = BMConfigParser().get(
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myAddress, 'privsigningkey')
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privEncryptionKeyBase58 = BMConfigParser().get(
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myAddress, 'privencryptionkey')
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except Exception as err:
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logger.error('Error within doPOWForMyV2Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err)
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return
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privSigningKeyHex = hexlify(shared.decodeWalletImportFormat(
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privSigningKeyBase58))
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privEncryptionKeyHex = hexlify(shared.decodeWalletImportFormat(
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privEncryptionKeyBase58))
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pubSigningKey = unhexlify(highlevelcrypto.privToPub(
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privSigningKeyHex))
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pubEncryptionKey = unhexlify(highlevelcrypto.privToPub(
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privEncryptionKeyHex))
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payload += pubSigningKey[1:]
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payload += pubEncryptionKey[1:]
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# Do the POW for this pubkey message
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target = 2 ** 64 / (defaults.networkDefaultProofOfWorkNonceTrialsPerByte*(len(payload) + 8 + defaults.networkDefaultPayloadLengthExtraBytes + ((TTL*(len(payload)+8+defaults.networkDefaultPayloadLengthExtraBytes))/(2 ** 16))))
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logger.info('(For pubkey message) Doing proof of work...')
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initialHash = hashlib.sha512(payload).digest()
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trialValue, nonce = proofofwork.run(target, initialHash)
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logger.info('(For pubkey message) Found proof of work ' + str(trialValue), ' Nonce: ', str(nonce))
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payload = pack('>Q', nonce) + payload
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inventoryHash = calculateInventoryHash(payload)
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objectType = 1
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Inventory()[inventoryHash] = (
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objectType, streamNumber, payload, embeddedTime,'')
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PendingUpload().add(inventoryHash)
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logger.info('broadcasting inv with hash: ' + hexlify(inventoryHash))
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queues.invQueue.put((streamNumber, inventoryHash))
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queues.UISignalQueue.put(('updateStatusBar', ''))
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try:
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BMConfigParser().set(
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myAddress, 'lastpubkeysendtime', str(int(time.time())))
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BMConfigParser().save()
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except:
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# The user deleted the address out of the keys.dat file before this
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# finished.
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pass
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# If this isn't a chan address, this function assembles the pubkey data,
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# does the necessary POW and sends it out. If it *is* a chan then it
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# assembles the pubkey and stores is in the pubkey table so that we can
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# send messages to "ourselves".
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def sendOutOrStoreMyV3Pubkey(self, hash):
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try:
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myAddress = shared.myAddressesByHash[hash]
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except:
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#The address has been deleted.
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return
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if BMConfigParser().safeGetBoolean(myAddress, 'chan'):
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logger.info('This is a chan address. Not sending pubkey.')
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return
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status, addressVersionNumber, streamNumber, hash = decodeAddress(
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myAddress)
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TTL = int(28 * 24 * 60 * 60 + random.randrange(-300, 300))# 28 days from now plus or minus five minutes
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embeddedTime = int(time.time() + TTL)
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signedTimeForProtocolV2 = embeddedTime - TTL
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"""
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According to the protocol specification, the expiresTime along with the pubkey information is
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signed. But to be backwards compatible during the upgrade period, we shall sign not the
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expiresTime but rather the current time. There must be precisely a 28 day difference
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between the two. After the upgrade period we'll switch to signing the whole payload with the
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expiresTime time.
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"""
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payload = pack('>Q', (embeddedTime))
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payload += '\x00\x00\x00\x01' # object type: pubkey
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payload += encodeVarint(addressVersionNumber) # Address version number
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payload += encodeVarint(streamNumber)
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payload += protocol.getBitfield(myAddress) # bitfield of features supported by me (see the wiki).
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try:
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privSigningKeyBase58 = BMConfigParser().get(
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myAddress, 'privsigningkey')
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privEncryptionKeyBase58 = BMConfigParser().get(
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myAddress, 'privencryptionkey')
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except Exception as err:
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logger.error('Error within sendOutOrStoreMyV3Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err)
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return
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privSigningKeyHex = hexlify(shared.decodeWalletImportFormat(
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privSigningKeyBase58))
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privEncryptionKeyHex = hexlify(shared.decodeWalletImportFormat(
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privEncryptionKeyBase58))
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pubSigningKey = unhexlify(highlevelcrypto.privToPub(
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privSigningKeyHex))
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pubEncryptionKey = unhexlify(highlevelcrypto.privToPub(
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privEncryptionKeyHex))
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payload += pubSigningKey[1:]
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payload += pubEncryptionKey[1:]
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payload += encodeVarint(BMConfigParser().getint(
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myAddress, 'noncetrialsperbyte'))
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payload += encodeVarint(BMConfigParser().getint(
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myAddress, 'payloadlengthextrabytes'))
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signature = highlevelcrypto.sign(payload, privSigningKeyHex)
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payload += encodeVarint(len(signature))
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payload += signature
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# Do the POW for this pubkey message
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target = 2 ** 64 / (defaults.networkDefaultProofOfWorkNonceTrialsPerByte*(len(payload) + 8 + defaults.networkDefaultPayloadLengthExtraBytes + ((TTL*(len(payload)+8+defaults.networkDefaultPayloadLengthExtraBytes))/(2 ** 16))))
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logger.info('(For pubkey message) Doing proof of work...')
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initialHash = hashlib.sha512(payload).digest()
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trialValue, nonce = proofofwork.run(target, initialHash)
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logger.info('(For pubkey message) Found proof of work. Nonce: ' + str(nonce))
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payload = pack('>Q', nonce) + payload
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inventoryHash = calculateInventoryHash(payload)
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objectType = 1
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Inventory()[inventoryHash] = (
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objectType, streamNumber, payload, embeddedTime,'')
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PendingUpload().add(inventoryHash)
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logger.info('broadcasting inv with hash: ' + hexlify(inventoryHash))
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queues.invQueue.put((streamNumber, inventoryHash))
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queues.UISignalQueue.put(('updateStatusBar', ''))
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try:
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BMConfigParser().set(
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myAddress, 'lastpubkeysendtime', str(int(time.time())))
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BMConfigParser().save()
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except:
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# The user deleted the address out of the keys.dat file before this
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# finished.
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pass
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# If this isn't a chan address, this function assembles the pubkey data,
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# does the necessary POW and sends it out.
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def sendOutOrStoreMyV4Pubkey(self, myAddress):
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if not BMConfigParser().has_section(myAddress):
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#The address has been deleted.
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return
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if shared.BMConfigParser().safeGetBoolean(myAddress, 'chan'):
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logger.info('This is a chan address. Not sending pubkey.')
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return
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status, addressVersionNumber, streamNumber, hash = decodeAddress(
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myAddress)
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TTL = int(28 * 24 * 60 * 60 + random.randrange(-300, 300))# 28 days from now plus or minus five minutes
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embeddedTime = int(time.time() + TTL)
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payload = pack('>Q', (embeddedTime))
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payload += '\x00\x00\x00\x01' # object type: pubkey
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payload += encodeVarint(addressVersionNumber) # Address version number
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payload += encodeVarint(streamNumber)
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dataToEncrypt = protocol.getBitfield(myAddress)
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try:
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privSigningKeyBase58 = BMConfigParser().get(
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myAddress, 'privsigningkey')
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privEncryptionKeyBase58 = BMConfigParser().get(
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myAddress, 'privencryptionkey')
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except Exception as err:
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logger.error('Error within sendOutOrStoreMyV4Pubkey. Could not read the keys from the keys.dat file for a requested address. %s\n' % err)
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return
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privSigningKeyHex = hexlify(shared.decodeWalletImportFormat(
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privSigningKeyBase58))
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privEncryptionKeyHex = hexlify(shared.decodeWalletImportFormat(
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privEncryptionKeyBase58))
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pubSigningKey = unhexlify(highlevelcrypto.privToPub(
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privSigningKeyHex))
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pubEncryptionKey = unhexlify(highlevelcrypto.privToPub(
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privEncryptionKeyHex))
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dataToEncrypt += pubSigningKey[1:]
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dataToEncrypt += pubEncryptionKey[1:]
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dataToEncrypt += encodeVarint(BMConfigParser().getint(
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myAddress, 'noncetrialsperbyte'))
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dataToEncrypt += encodeVarint(BMConfigParser().getint(
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myAddress, 'payloadlengthextrabytes'))
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# When we encrypt, we'll use a hash of the data
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# contained in an address as a decryption key. This way in order to
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# read the public keys in a pubkey message, a node must know the address
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# first. We'll also tag, unencrypted, the pubkey with part of the hash
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# so that nodes know which pubkey object to try to decrypt when they
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# want to send a message.
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doubleHashOfAddressData = hashlib.sha512(hashlib.sha512(encodeVarint(
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addressVersionNumber) + encodeVarint(streamNumber) + hash).digest()).digest()
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payload += doubleHashOfAddressData[32:] # the tag
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signature = highlevelcrypto.sign(payload + dataToEncrypt, privSigningKeyHex)
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dataToEncrypt += encodeVarint(len(signature))
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dataToEncrypt += signature
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privEncryptionKey = doubleHashOfAddressData[:32]
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pubEncryptionKey = highlevelcrypto.pointMult(privEncryptionKey)
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payload += highlevelcrypto.encrypt(
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dataToEncrypt, hexlify(pubEncryptionKey))
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# Do the POW for this pubkey message
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target = 2 ** 64 / (defaults.networkDefaultProofOfWorkNonceTrialsPerByte*(len(payload) + 8 + defaults.networkDefaultPayloadLengthExtraBytes + ((TTL*(len(payload)+8+defaults.networkDefaultPayloadLengthExtraBytes))/(2 ** 16))))
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logger.info('(For pubkey message) Doing proof of work...')
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initialHash = hashlib.sha512(payload).digest()
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trialValue, nonce = proofofwork.run(target, initialHash)
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logger.info('(For pubkey message) Found proof of work ' + str(trialValue) + 'Nonce: ' + str(nonce))
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payload = pack('>Q', nonce) + payload
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inventoryHash = calculateInventoryHash(payload)
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objectType = 1
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Inventory()[inventoryHash] = (
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objectType, streamNumber, payload, embeddedTime, doubleHashOfAddressData[32:])
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PendingUpload().add(inventoryHash)
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logger.info('broadcasting inv with hash: ' + hexlify(inventoryHash))
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queues.invQueue.put((streamNumber, inventoryHash))
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queues.UISignalQueue.put(('updateStatusBar', ''))
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try:
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BMConfigParser().set(
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myAddress, 'lastpubkeysendtime', str(int(time.time())))
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BMConfigParser().save()
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except Exception as err:
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logger.error('Error: Couldn\'t add the lastpubkeysendtime to the keys.dat file. Error message: %s' % err)
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def sendBroadcast(self):
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# Reset just in case
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sqlExecute(
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'''UPDATE sent SET status='broadcastqueued' WHERE status = 'doingbroadcastpow' ''')
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queryreturn = sqlQuery(
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'''SELECT fromaddress, subject, message, ackdata, ttl, encodingtype FROM sent WHERE status=? and folder='sent' ''', 'broadcastqueued')
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for row in queryreturn:
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fromaddress, subject, body, ackdata, TTL, encoding = row
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status, addressVersionNumber, streamNumber, ripe = decodeAddress(
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fromaddress)
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if addressVersionNumber <= 1:
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logger.error('Error: In the singleWorker thread, the sendBroadcast function doesn\'t understand the address version.\n')
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return
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# We need to convert our private keys to public keys in order
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# to include them.
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try:
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privSigningKeyBase58 = BMConfigParser().get(
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fromaddress, 'privsigningkey')
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privEncryptionKeyBase58 = BMConfigParser().get(
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fromaddress, 'privencryptionkey')
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except:
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queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
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ackdata, tr._translate("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file."))))
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continue
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sqlExecute(
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'''UPDATE sent SET status='doingbroadcastpow' WHERE ackdata=? AND status='broadcastqueued' ''',
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ackdata)
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privSigningKeyHex = hexlify(shared.decodeWalletImportFormat(
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privSigningKeyBase58))
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privEncryptionKeyHex = hexlify(shared.decodeWalletImportFormat(
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privEncryptionKeyBase58))
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pubSigningKey = highlevelcrypto.privToPub(privSigningKeyHex).decode(
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'hex') # At this time these pubkeys are 65 bytes long because they include the encoding byte which we won't be sending in the broadcast message.
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pubEncryptionKey = unhexlify(highlevelcrypto.privToPub(
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privEncryptionKeyHex))
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if TTL > 28 * 24 * 60 * 60:
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TTL = 28 * 24 * 60 * 60
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if TTL < 60*60:
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TTL = 60*60
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TTL = int(TTL + random.randrange(-300, 300))# add some randomness to the TTL
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embeddedTime = int(time.time() + TTL)
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payload = pack('>Q', embeddedTime)
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payload += '\x00\x00\x00\x03' # object type: broadcast
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if addressVersionNumber <= 3:
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payload += encodeVarint(4) # broadcast version
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else:
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payload += encodeVarint(5) # broadcast version
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payload += encodeVarint(streamNumber)
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if addressVersionNumber >= 4:
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doubleHashOfAddressData = hashlib.sha512(hashlib.sha512(encodeVarint(
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addressVersionNumber) + encodeVarint(streamNumber) + ripe).digest()).digest()
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tag = doubleHashOfAddressData[32:]
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payload += tag
|
|
else:
|
|
tag = ''
|
|
|
|
dataToEncrypt = encodeVarint(addressVersionNumber)
|
|
dataToEncrypt += encodeVarint(streamNumber)
|
|
dataToEncrypt += protocol.getBitfield(fromaddress) # behavior bitfield
|
|
dataToEncrypt += pubSigningKey[1:]
|
|
dataToEncrypt += pubEncryptionKey[1:]
|
|
if addressVersionNumber >= 3:
|
|
dataToEncrypt += encodeVarint(BMConfigParser().getint(fromaddress,'noncetrialsperbyte'))
|
|
dataToEncrypt += encodeVarint(BMConfigParser().getint(fromaddress,'payloadlengthextrabytes'))
|
|
dataToEncrypt += encodeVarint(encoding) # message encoding type
|
|
encodedMessage = helper_msgcoding.MsgEncode({"subject": subject, "body": body}, encoding)
|
|
dataToEncrypt += encodeVarint(encodedMessage.length)
|
|
dataToEncrypt += encodedMessage.data
|
|
dataToSign = payload + dataToEncrypt
|
|
|
|
signature = highlevelcrypto.sign(
|
|
dataToSign, privSigningKeyHex)
|
|
dataToEncrypt += encodeVarint(len(signature))
|
|
dataToEncrypt += signature
|
|
|
|
# Encrypt the broadcast with the information contained in the broadcaster's address.
|
|
# Anyone who knows the address can generate the private encryption key to decrypt
|
|
# the broadcast. This provides virtually no privacy; its purpose is to keep
|
|
# questionable and illegal content from flowing through the Internet connections
|
|
# and being stored on the disk of 3rd parties.
|
|
if addressVersionNumber <= 3:
|
|
privEncryptionKey = hashlib.sha512(encodeVarint(
|
|
addressVersionNumber) + encodeVarint(streamNumber) + ripe).digest()[:32]
|
|
else:
|
|
privEncryptionKey = doubleHashOfAddressData[:32]
|
|
|
|
pubEncryptionKey = highlevelcrypto.pointMult(privEncryptionKey)
|
|
payload += highlevelcrypto.encrypt(
|
|
dataToEncrypt, hexlify(pubEncryptionKey))
|
|
|
|
target = 2 ** 64 / (defaults.networkDefaultProofOfWorkNonceTrialsPerByte*(len(payload) + 8 + defaults.networkDefaultPayloadLengthExtraBytes + ((TTL*(len(payload)+8+defaults.networkDefaultPayloadLengthExtraBytes))/(2 ** 16))))
|
|
logger.info('(For broadcast message) Doing proof of work...')
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
|
|
ackdata, tr._translate("MainWindow", "Doing work necessary to send broadcast..."))))
|
|
initialHash = hashlib.sha512(payload).digest()
|
|
trialValue, nonce = proofofwork.run(target, initialHash)
|
|
logger.info('(For broadcast message) Found proof of work ' + str(trialValue) + ' Nonce: ' + str(nonce))
|
|
|
|
payload = pack('>Q', nonce) + payload
|
|
|
|
# Sanity check. The payload size should never be larger than 256 KiB. There should
|
|
# be checks elsewhere in the code to not let the user try to send a message this large
|
|
# until we implement message continuation.
|
|
if len(payload) > 2 ** 18: # 256 KiB
|
|
logger.critical('This broadcast object is too large to send. This should never happen. Object size: %s' % len(payload))
|
|
continue
|
|
|
|
inventoryHash = calculateInventoryHash(payload)
|
|
objectType = 3
|
|
Inventory()[inventoryHash] = (
|
|
objectType, streamNumber, payload, embeddedTime, tag)
|
|
PendingUpload().add(inventoryHash)
|
|
logger.info('sending inv (within sendBroadcast function) for object: ' + hexlify(inventoryHash))
|
|
queues.invQueue.put((streamNumber, inventoryHash))
|
|
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr._translate("MainWindow", "Broadcast sent on %1").arg(l10n.formatTimestamp()))))
|
|
|
|
# Update the status of the message in the 'sent' table to have
|
|
# a 'broadcastsent' status
|
|
sqlExecute(
|
|
'UPDATE sent SET msgid=?, status=?, lastactiontime=? WHERE ackdata=?',
|
|
inventoryHash,
|
|
'broadcastsent',
|
|
int(time.time()),
|
|
ackdata)
|
|
|
|
|
|
def sendMsg(self):
|
|
# Reset just in case
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='msgqueued' WHERE status IN ('doingpubkeypow', 'doingmsgpow')''')
|
|
queryreturn = sqlQuery(
|
|
'''SELECT toaddress, fromaddress, subject, message, ackdata, status, ttl, retrynumber, encodingtype FROM sent WHERE (status='msgqueued' or status='forcepow') and folder='sent' ''')
|
|
for row in queryreturn: # while we have a msg that needs some work
|
|
toaddress, fromaddress, subject, message, ackdata, status, TTL, retryNumber, encoding = row
|
|
toStatus, toAddressVersionNumber, toStreamNumber, toRipe = decodeAddress(
|
|
toaddress)
|
|
fromStatus, fromAddressVersionNumber, fromStreamNumber, fromRipe = decodeAddress(
|
|
fromaddress)
|
|
|
|
# We may or may not already have the pubkey for this toAddress. Let's check.
|
|
if status == 'forcepow':
|
|
# if the status of this msg is 'forcepow' then clearly we have the pubkey already
|
|
# because the user could not have overridden the message about the POW being
|
|
# too difficult without knowing the required difficulty.
|
|
pass
|
|
elif status == 'doingmsgpow':
|
|
# We wouldn't have set the status to doingmsgpow if we didn't already have the pubkey
|
|
# so let's assume that we have it.
|
|
pass
|
|
# If we are sending a message to ourselves or a chan then we won't need an entry in the pubkeys table; we can calculate the needed pubkey using the private keys in our keys.dat file.
|
|
elif BMConfigParser().has_section(toaddress):
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='doingmsgpow' WHERE toaddress=? AND status='msgqueued' ''',
|
|
toaddress)
|
|
status='doingmsgpow'
|
|
elif status == 'msgqueued':
|
|
# Let's see if we already have the pubkey in our pubkeys table
|
|
queryreturn = sqlQuery(
|
|
'''SELECT address FROM pubkeys WHERE address=?''', toaddress)
|
|
if queryreturn != []: # If we have the needed pubkey in the pubkey table already,
|
|
# set the status of this msg to doingmsgpow
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='doingmsgpow' WHERE toaddress=? AND status='msgqueued' ''',
|
|
toaddress)
|
|
status = 'doingmsgpow'
|
|
# mark the pubkey as 'usedpersonally' so that we don't delete it later. If the pubkey version
|
|
# is >= 4 then usedpersonally will already be set to yes because we'll only ever have
|
|
# usedpersonally v4 pubkeys in the pubkeys table.
|
|
sqlExecute(
|
|
'''UPDATE pubkeys SET usedpersonally='yes' WHERE address=?''',
|
|
toaddress)
|
|
else: # We don't have the needed pubkey in the pubkeys table already.
|
|
if toAddressVersionNumber <= 3:
|
|
toTag = ''
|
|
else:
|
|
toTag = hashlib.sha512(hashlib.sha512(encodeVarint(toAddressVersionNumber)+encodeVarint(toStreamNumber)+toRipe).digest()).digest()[32:]
|
|
if toaddress in state.neededPubkeys or toTag in state.neededPubkeys:
|
|
# We already sent a request for the pubkey
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='awaitingpubkey', sleeptill=? WHERE toaddress=? AND status='msgqueued' ''',
|
|
int(time.time()) + 2.5*24*60*60,
|
|
toaddress)
|
|
queues.UISignalQueue.put(('updateSentItemStatusByToAddress', (
|
|
toaddress, tr._translate("MainWindow",'Encryption key was requested earlier.'))))
|
|
continue #on with the next msg on which we can do some work
|
|
else:
|
|
# We have not yet sent a request for the pubkey
|
|
needToRequestPubkey = True
|
|
if toAddressVersionNumber >= 4: # If we are trying to send to address version >= 4 then
|
|
# the needed pubkey might be encrypted in the inventory.
|
|
# If we have it we'll need to decrypt it and put it in
|
|
# the pubkeys table.
|
|
|
|
# The decryptAndCheckPubkeyPayload function expects that the shared.neededPubkeys
|
|
# dictionary already contains the toAddress and cryptor object associated with
|
|
# the tag for this toAddress.
|
|
doubleHashOfToAddressData = hashlib.sha512(hashlib.sha512(encodeVarint(
|
|
toAddressVersionNumber) + encodeVarint(toStreamNumber) + toRipe).digest()).digest()
|
|
privEncryptionKey = doubleHashOfToAddressData[:32] # The first half of the sha512 hash.
|
|
tag = doubleHashOfToAddressData[32:] # The second half of the sha512 hash.
|
|
state.neededPubkeys[tag] = (toaddress, highlevelcrypto.makeCryptor(hexlify(privEncryptionKey)))
|
|
|
|
for value in Inventory().by_type_and_tag(1, toTag):
|
|
if shared.decryptAndCheckPubkeyPayload(value.payload, toaddress) == 'successful': #if valid, this function also puts it in the pubkeys table.
|
|
needToRequestPubkey = False
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='doingmsgpow', retrynumber=0 WHERE toaddress=? AND (status='msgqueued' or status='awaitingpubkey' or status='doingpubkeypow')''',
|
|
toaddress)
|
|
del state.neededPubkeys[tag]
|
|
break
|
|
#else: # There was something wrong with this pubkey object even
|
|
# though it had the correct tag- almost certainly because
|
|
# of malicious behavior or a badly programmed client. If
|
|
# there are any other pubkeys in our inventory with the correct
|
|
# tag then we'll try to decrypt those.
|
|
if needToRequestPubkey:
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='doingpubkeypow' WHERE toaddress=? AND status='msgqueued' ''',
|
|
toaddress)
|
|
queues.UISignalQueue.put(('updateSentItemStatusByToAddress', (
|
|
toaddress, tr._translate("MainWindow",'Sending a request for the recipient\'s encryption key.'))))
|
|
self.requestPubKey(toaddress)
|
|
continue #on with the next msg on which we can do some work
|
|
|
|
# At this point we know that we have the necessary pubkey in the pubkeys table.
|
|
|
|
TTL *= 2**retryNumber
|
|
if TTL > 28 * 24 * 60 * 60:
|
|
TTL = 28 * 24 * 60 * 60
|
|
TTL = int(TTL + random.randrange(-300, 300))# add some randomness to the TTL
|
|
embeddedTime = int(time.time() + TTL)
|
|
|
|
if not BMConfigParser().has_section(toaddress): # if we aren't sending this to ourselves or a chan
|
|
shared.ackdataForWhichImWatching[ackdata] = 0
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
|
|
ackdata, tr._translate("MainWindow", "Looking up the receiver\'s public key"))))
|
|
logger.info('Sending a message.')
|
|
logger.debug('First 150 characters of message: ' + repr(message[:150]))
|
|
|
|
# Let us fetch the recipient's public key out of our database. If
|
|
# the required proof of work difficulty is too hard then we'll
|
|
# abort.
|
|
queryreturn = sqlQuery(
|
|
'SELECT transmitdata FROM pubkeys WHERE address=?',
|
|
toaddress)
|
|
for row in queryreturn:
|
|
pubkeyPayload, = row
|
|
|
|
# The pubkey message is stored with the following items all appended:
|
|
# -address version
|
|
# -stream number
|
|
# -behavior bitfield
|
|
# -pub signing key
|
|
# -pub encryption key
|
|
# -nonce trials per byte (if address version is >= 3)
|
|
# -length extra bytes (if address version is >= 3)
|
|
|
|
readPosition = 1 # to bypass the address version whose length is definitely 1
|
|
streamNumber, streamNumberLength = decodeVarint(
|
|
pubkeyPayload[readPosition:readPosition + 10])
|
|
readPosition += streamNumberLength
|
|
behaviorBitfield = pubkeyPayload[readPosition:readPosition + 4]
|
|
# Mobile users may ask us to include their address's RIPE hash on a message
|
|
# unencrypted. Before we actually do it the sending human must check a box
|
|
# in the settings menu to allow it.
|
|
if shared.isBitSetWithinBitfield(behaviorBitfield,30): # if receiver is a mobile device who expects that their address RIPE is included unencrypted on the front of the message..
|
|
if not shared.BMConfigParser().safeGetBoolean('bitmessagesettings','willinglysendtomobile'): # if we are Not willing to include the receiver's RIPE hash on the message..
|
|
logger.info('The receiver is a mobile user but the sender (you) has not selected that you are willing to send to mobiles. Aborting send.')
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr._translate("MainWindow",'Problem: Destination is a mobile device who requests that the destination be included in the message but this is disallowed in your settings. %1').arg(l10n.formatTimestamp()))))
|
|
# if the human changes their setting and then sends another message or restarts their client, this one will send at that time.
|
|
continue
|
|
readPosition += 4 # to bypass the bitfield of behaviors
|
|
# pubSigningKeyBase256 = pubkeyPayload[readPosition:readPosition+64] # We don't use this key for anything here.
|
|
readPosition += 64
|
|
pubEncryptionKeyBase256 = pubkeyPayload[
|
|
readPosition:readPosition + 64]
|
|
readPosition += 64
|
|
|
|
# Let us fetch the amount of work required by the recipient.
|
|
if toAddressVersionNumber == 2:
|
|
requiredAverageProofOfWorkNonceTrialsPerByte = defaults.networkDefaultProofOfWorkNonceTrialsPerByte
|
|
requiredPayloadLengthExtraBytes = defaults.networkDefaultPayloadLengthExtraBytes
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
|
|
ackdata, tr._translate("MainWindow", "Doing work necessary to send message.\nThere is no required difficulty for version 2 addresses like this."))))
|
|
elif toAddressVersionNumber >= 3:
|
|
requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint(
|
|
pubkeyPayload[readPosition:readPosition + 10])
|
|
readPosition += varintLength
|
|
requiredPayloadLengthExtraBytes, varintLength = decodeVarint(
|
|
pubkeyPayload[readPosition:readPosition + 10])
|
|
readPosition += varintLength
|
|
if requiredAverageProofOfWorkNonceTrialsPerByte < defaults.networkDefaultProofOfWorkNonceTrialsPerByte: # We still have to meet a minimum POW difficulty regardless of what they say is allowed in order to get our message to propagate through the network.
|
|
requiredAverageProofOfWorkNonceTrialsPerByte = defaults.networkDefaultProofOfWorkNonceTrialsPerByte
|
|
if requiredPayloadLengthExtraBytes < defaults.networkDefaultPayloadLengthExtraBytes:
|
|
requiredPayloadLengthExtraBytes = defaults.networkDefaultPayloadLengthExtraBytes
|
|
logger.debug('Using averageProofOfWorkNonceTrialsPerByte: %s and payloadLengthExtraBytes: %s.' % (requiredAverageProofOfWorkNonceTrialsPerByte, requiredPayloadLengthExtraBytes))
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr._translate("MainWindow", "Doing work necessary to send message.\nReceiver\'s required difficulty: %1 and %2").arg(str(float(
|
|
requiredAverageProofOfWorkNonceTrialsPerByte) / defaults.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(requiredPayloadLengthExtraBytes) / defaults.networkDefaultPayloadLengthExtraBytes)))))
|
|
if status != 'forcepow':
|
|
if (requiredAverageProofOfWorkNonceTrialsPerByte > BMConfigParser().getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') and BMConfigParser().getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') != 0) or (requiredPayloadLengthExtraBytes > BMConfigParser().getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') and BMConfigParser().getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') != 0):
|
|
# The demanded difficulty is more than we are willing
|
|
# to do.
|
|
sqlExecute(
|
|
'''UPDATE sent SET status='toodifficult' WHERE ackdata=? ''',
|
|
ackdata)
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr._translate("MainWindow", "Problem: The work demanded by the recipient (%1 and %2) is more difficult than you are willing to do. %3").arg(str(float(requiredAverageProofOfWorkNonceTrialsPerByte) / defaults.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(
|
|
requiredPayloadLengthExtraBytes) / defaults.networkDefaultPayloadLengthExtraBytes)).arg(l10n.formatTimestamp()))))
|
|
continue
|
|
else: # if we are sending a message to ourselves or a chan..
|
|
logger.info('Sending a message.')
|
|
logger.debug('First 150 characters of message: ' + repr(message[:150]))
|
|
behaviorBitfield = protocol.getBitfield(fromaddress)
|
|
|
|
try:
|
|
privEncryptionKeyBase58 = BMConfigParser().get(
|
|
toaddress, 'privencryptionkey')
|
|
except Exception as err:
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr._translate("MainWindow",'Problem: You are trying to send a message to yourself or a chan but your encryption key could not be found in the keys.dat file. Could not encrypt message. %1').arg(l10n.formatTimestamp()))))
|
|
logger.error('Error within sendMsg. Could not read the keys from the keys.dat file for our own address. %s\n' % err)
|
|
continue
|
|
privEncryptionKeyHex = hexlify(shared.decodeWalletImportFormat(
|
|
privEncryptionKeyBase58))
|
|
pubEncryptionKeyBase256 = unhexlify(highlevelcrypto.privToPub(
|
|
privEncryptionKeyHex))[1:]
|
|
requiredAverageProofOfWorkNonceTrialsPerByte = defaults.networkDefaultProofOfWorkNonceTrialsPerByte
|
|
requiredPayloadLengthExtraBytes = defaults.networkDefaultPayloadLengthExtraBytes
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
|
|
ackdata, tr._translate("MainWindow", "Doing work necessary to send message."))))
|
|
|
|
# Now we can start to assemble our message.
|
|
payload = encodeVarint(fromAddressVersionNumber)
|
|
payload += encodeVarint(fromStreamNumber)
|
|
payload += protocol.getBitfield(fromaddress) # Bitfield of features and behaviors that can be expected from me. (See https://bitmessage.org/wiki/Protocol_specification#Pubkey_bitfield_features )
|
|
|
|
# We need to convert our private keys to public keys in order
|
|
# to include them.
|
|
try:
|
|
privSigningKeyBase58 = BMConfigParser().get(
|
|
fromaddress, 'privsigningkey')
|
|
privEncryptionKeyBase58 = BMConfigParser().get(
|
|
fromaddress, 'privencryptionkey')
|
|
except:
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (
|
|
ackdata, tr._translate("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file."))))
|
|
continue
|
|
|
|
privSigningKeyHex = hexlify(shared.decodeWalletImportFormat(
|
|
privSigningKeyBase58))
|
|
privEncryptionKeyHex = hexlify(shared.decodeWalletImportFormat(
|
|
privEncryptionKeyBase58))
|
|
|
|
pubSigningKey = unhexlify(highlevelcrypto.privToPub(
|
|
privSigningKeyHex))
|
|
pubEncryptionKey = unhexlify(highlevelcrypto.privToPub(
|
|
privEncryptionKeyHex))
|
|
|
|
payload += pubSigningKey[
|
|
1:] # The \x04 on the beginning of the public keys are not sent. This way there is only one acceptable way to encode and send a public key.
|
|
payload += pubEncryptionKey[1:]
|
|
|
|
if fromAddressVersionNumber >= 3:
|
|
# If the receiver of our message is in our address book,
|
|
# subscriptions list, or whitelist then we will allow them to
|
|
# do the network-minimum proof of work. Let us check to see if
|
|
# the receiver is in any of those lists.
|
|
if shared.isAddressInMyAddressBookSubscriptionsListOrWhitelist(toaddress):
|
|
payload += encodeVarint(
|
|
defaults.networkDefaultProofOfWorkNonceTrialsPerByte)
|
|
payload += encodeVarint(
|
|
defaults.networkDefaultPayloadLengthExtraBytes)
|
|
else:
|
|
payload += encodeVarint(BMConfigParser().getint(
|
|
fromaddress, 'noncetrialsperbyte'))
|
|
payload += encodeVarint(BMConfigParser().getint(
|
|
fromaddress, 'payloadlengthextrabytes'))
|
|
|
|
payload += toRipe # This hash will be checked by the receiver of the message to verify that toRipe belongs to them. This prevents a Surreptitious Forwarding Attack.
|
|
payload += encodeVarint(encoding) # message encoding type
|
|
encodedMessage = helper_msgcoding.MsgEncode({"subject": subject, "body": message}, encoding)
|
|
payload += encodeVarint(encodedMessage.length)
|
|
payload += encodedMessage.data
|
|
if BMConfigParser().has_section(toaddress):
|
|
logger.info('Not bothering to include ackdata because we are sending to ourselves or a chan.')
|
|
fullAckPayload = ''
|
|
elif not protocol.checkBitfield(behaviorBitfield, protocol.BITFIELD_DOESACK):
|
|
logger.info('Not bothering to include ackdata because the receiver said that they won\'t relay it anyway.')
|
|
fullAckPayload = ''
|
|
else:
|
|
fullAckPayload = self.generateFullAckMessage(
|
|
ackdata, toStreamNumber, TTL) # The fullAckPayload is a normal msg protocol message with the proof of work already completed that the receiver of this message can easily send out.
|
|
payload += encodeVarint(len(fullAckPayload))
|
|
payload += fullAckPayload
|
|
dataToSign = pack('>Q', embeddedTime) + '\x00\x00\x00\x02' + encodeVarint(1) + encodeVarint(toStreamNumber) + payload
|
|
signature = highlevelcrypto.sign(dataToSign, privSigningKeyHex)
|
|
payload += encodeVarint(len(signature))
|
|
payload += signature
|
|
|
|
# We have assembled the data that will be encrypted.
|
|
try:
|
|
encrypted = highlevelcrypto.encrypt(payload,"04"+hexlify(pubEncryptionKeyBase256))
|
|
except:
|
|
sqlExecute('''UPDATE sent SET status='badkey' WHERE ackdata=?''', ackdata)
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr._translate("MainWindow",'Problem: The recipient\'s encryption key is no good. Could not encrypt message. %1').arg(l10n.formatTimestamp()))))
|
|
continue
|
|
|
|
encryptedPayload = pack('>Q', embeddedTime)
|
|
encryptedPayload += '\x00\x00\x00\x02' # object type: msg
|
|
encryptedPayload += encodeVarint(1) # msg version
|
|
encryptedPayload += encodeVarint(toStreamNumber) + encrypted
|
|
target = 2 ** 64 / (requiredAverageProofOfWorkNonceTrialsPerByte*(len(encryptedPayload) + 8 + requiredPayloadLengthExtraBytes + ((TTL*(len(encryptedPayload)+8+requiredPayloadLengthExtraBytes))/(2 ** 16))))
|
|
logger.info('(For msg message) Doing proof of work. Total required difficulty: %f. Required small message difficulty: %f.', float(requiredAverageProofOfWorkNonceTrialsPerByte) / defaults.networkDefaultProofOfWorkNonceTrialsPerByte, float(requiredPayloadLengthExtraBytes) / defaults.networkDefaultPayloadLengthExtraBytes)
|
|
|
|
powStartTime = time.time()
|
|
initialHash = hashlib.sha512(encryptedPayload).digest()
|
|
trialValue, nonce = proofofwork.run(target, initialHash)
|
|
logger.info('(For msg message) Found proof of work ' + str(trialValue) + ' Nonce: ' + str(nonce))
|
|
try:
|
|
logger.info('PoW took %.1f seconds, speed %s.', time.time() - powStartTime, sizeof_fmt(nonce / (time.time() - powStartTime)))
|
|
except:
|
|
pass
|
|
|
|
encryptedPayload = pack('>Q', nonce) + encryptedPayload
|
|
|
|
# Sanity check. The encryptedPayload size should never be larger than 256 KiB. There should
|
|
# be checks elsewhere in the code to not let the user try to send a message this large
|
|
# until we implement message continuation.
|
|
if len(encryptedPayload) > 2 ** 18: # 256 KiB
|
|
logger.critical('This msg object is too large to send. This should never happen. Object size: %s' % len(encryptedPayload))
|
|
continue
|
|
|
|
inventoryHash = calculateInventoryHash(encryptedPayload)
|
|
objectType = 2
|
|
Inventory()[inventoryHash] = (
|
|
objectType, toStreamNumber, encryptedPayload, embeddedTime, '')
|
|
PendingUpload().add(inventoryHash)
|
|
if BMConfigParser().has_section(toaddress) or not protocol.checkBitfield(behaviorBitfield, protocol.BITFIELD_DOESACK):
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr._translate("MainWindow", "Message sent. Sent at %1").arg(l10n.formatTimestamp()))))
|
|
else:
|
|
# not sending to a chan or one of my addresses
|
|
queues.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr._translate("MainWindow", "Message sent. Waiting for acknowledgement. Sent on %1").arg(l10n.formatTimestamp()))))
|
|
logger.info('Broadcasting inv for my msg(within sendmsg function):' + hexlify(inventoryHash))
|
|
queues.invQueue.put((toStreamNumber, inventoryHash))
|
|
|
|
# Update the sent message in the sent table with the necessary information.
|
|
if BMConfigParser().has_section(toaddress) or not protocol.checkBitfield(behaviorBitfield, protocol.BITFIELD_DOESACK):
|
|
newStatus = 'msgsentnoackexpected'
|
|
else:
|
|
newStatus = 'msgsent'
|
|
# wait 10% past expiration
|
|
sleepTill = int(time.time() + TTL * 1.1)
|
|
sqlExecute('''UPDATE sent SET msgid=?, status=?, retrynumber=?, sleeptill=?, lastactiontime=? WHERE ackdata=?''',
|
|
inventoryHash,
|
|
newStatus,
|
|
retryNumber+1,
|
|
sleepTill,
|
|
int(time.time()),
|
|
ackdata)
|
|
|
|
# If we are sending to ourselves or a chan, let's put the message in
|
|
# our own inbox.
|
|
if BMConfigParser().has_section(toaddress):
|
|
sigHash = hashlib.sha512(hashlib.sha512(signature).digest()).digest()[32:] # Used to detect and ignore duplicate messages in our inbox
|
|
t = (inventoryHash, toaddress, fromaddress, subject, int(
|
|
time.time()), message, 'inbox', encoding, 0, sigHash)
|
|
helper_inbox.insert(t)
|
|
|
|
queues.UISignalQueue.put(('displayNewInboxMessage', (
|
|
inventoryHash, toaddress, fromaddress, subject, message)))
|
|
|
|
# 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 BMConfigParser().safeGetBoolean('bitmessagesettings', 'apienabled'):
|
|
try:
|
|
apiNotifyPath = BMConfigParser().get(
|
|
'bitmessagesettings', 'apinotifypath')
|
|
except:
|
|
apiNotifyPath = ''
|
|
if apiNotifyPath != '':
|
|
call([apiNotifyPath, "newMessage"])
|
|
|
|
def requestPubKey(self, toAddress):
|
|
toStatus, addressVersionNumber, streamNumber, ripe = decodeAddress(
|
|
toAddress)
|
|
if toStatus != 'success':
|
|
logger.error('Very abnormal error occurred in requestPubKey. toAddress is: ' + repr(
|
|
toAddress) + '. Please report this error to Atheros.')
|
|
return
|
|
|
|
queryReturn = sqlQuery(
|
|
'''SELECT retrynumber FROM sent WHERE toaddress=? AND (status='doingpubkeypow' OR status='awaitingpubkey') LIMIT 1''',
|
|
toAddress)
|
|
if len(queryReturn) == 0:
|
|
logger.critical("BUG: Why are we requesting the pubkey for %s if there are no messages in the sent folder to that address?" % toAddress)
|
|
return
|
|
retryNumber = queryReturn[0][0]
|
|
|
|
if addressVersionNumber <= 3:
|
|
state.neededPubkeys[toAddress] = 0
|
|
elif addressVersionNumber >= 4:
|
|
# If the user just clicked 'send' then the tag (and other information) will already
|
|
# be in the neededPubkeys dictionary. But if we are recovering from a restart
|
|
# of the client then we have to put it in now.
|
|
privEncryptionKey = hashlib.sha512(hashlib.sha512(encodeVarint(addressVersionNumber)+encodeVarint(streamNumber)+ripe).digest()).digest()[:32] # Note that this is the first half of the sha512 hash.
|
|
tag = hashlib.sha512(hashlib.sha512(encodeVarint(addressVersionNumber)+encodeVarint(streamNumber)+ripe).digest()).digest()[32:] # Note that this is the second half of the sha512 hash.
|
|
if tag not in state.neededPubkeys:
|
|
state.neededPubkeys[tag] = (toAddress, highlevelcrypto.makeCryptor(hexlify(privEncryptionKey))) # We'll need this for when we receive a pubkey reply: it will be encrypted and we'll need to decrypt it.
|
|
|
|
TTL = 2.5*24*60*60 # 2.5 days. This was chosen fairly arbitrarily.
|
|
TTL *= 2**retryNumber
|
|
if TTL > 28*24*60*60:
|
|
TTL = 28*24*60*60
|
|
TTL = TTL + random.randrange(-300, 300) # add some randomness to the TTL
|
|
embeddedTime = int(time.time() + TTL)
|
|
payload = pack('>Q', embeddedTime)
|
|
payload += '\x00\x00\x00\x00' # object type: getpubkey
|
|
payload += encodeVarint(addressVersionNumber)
|
|
payload += encodeVarint(streamNumber)
|
|
if addressVersionNumber <= 3:
|
|
payload += ripe
|
|
logger.info('making request for pubkey with ripe: %s', hexlify(ripe))
|
|
else:
|
|
payload += tag
|
|
logger.info('making request for v4 pubkey with tag: %s', hexlify(tag))
|
|
|
|
# print 'trial value', trialValue
|
|
statusbar = 'Doing the computations necessary to request the recipient\'s public key.'
|
|
queues.UISignalQueue.put(('updateStatusBar', statusbar))
|
|
queues.UISignalQueue.put(('updateSentItemStatusByToAddress', (
|
|
toAddress, tr._translate("MainWindow",'Doing work necessary to request encryption key.'))))
|
|
|
|
target = 2 ** 64 / (defaults.networkDefaultProofOfWorkNonceTrialsPerByte*(len(payload) + 8 + defaults.networkDefaultPayloadLengthExtraBytes + ((TTL*(len(payload)+8+defaults.networkDefaultPayloadLengthExtraBytes))/(2 ** 16))))
|
|
initialHash = hashlib.sha512(payload).digest()
|
|
trialValue, nonce = proofofwork.run(target, initialHash)
|
|
logger.info('Found proof of work ' + str(trialValue) + ' Nonce: ' + str(nonce))
|
|
|
|
payload = pack('>Q', nonce) + payload
|
|
inventoryHash = calculateInventoryHash(payload)
|
|
objectType = 1
|
|
Inventory()[inventoryHash] = (
|
|
objectType, streamNumber, payload, embeddedTime, '')
|
|
PendingUpload().add(inventoryHash)
|
|
logger.info('sending inv (for the getpubkey message)')
|
|
queues.invQueue.put((streamNumber, inventoryHash))
|
|
|
|
# wait 10% past expiration
|
|
sleeptill = int(time.time() + TTL * 1.1)
|
|
sqlExecute(
|
|
'''UPDATE sent SET lastactiontime=?, status='awaitingpubkey', retrynumber=?, sleeptill=? WHERE toaddress=? AND (status='doingpubkeypow' OR status='awaitingpubkey') ''',
|
|
int(time.time()),
|
|
retryNumber+1,
|
|
sleeptill,
|
|
toAddress)
|
|
|
|
queues.UISignalQueue.put((
|
|
'updateStatusBar', tr._translate("MainWindow",'Broadcasting the public key request. This program will auto-retry if they are offline.')))
|
|
queues.UISignalQueue.put(('updateSentItemStatusByToAddress', (toAddress, tr._translate("MainWindow",'Sending public key request. Waiting for reply. Requested at %1').arg(l10n.formatTimestamp()))))
|
|
|
|
def generateFullAckMessage(self, ackdata, toStreamNumber, TTL):
|
|
|
|
# It might be perfectly fine to just use the same TTL for
|
|
# the ackdata that we use for the message. But I would rather
|
|
# it be more difficult for attackers to associate ackData with
|
|
# the associated msg object. However, users would want the TTL
|
|
# of the acknowledgement to be about the same as they set
|
|
# for the message itself. So let's set the TTL of the
|
|
# acknowledgement to be in one of three 'buckets': 1 hour, 7
|
|
# days, or 28 days, whichever is relatively close to what the
|
|
# user specified.
|
|
if TTL < 24*60*60: # 1 day
|
|
TTL = 24*60*60 # 1 day
|
|
elif TTL < 7*24*60*60: # 1 week
|
|
TTL = 7*24*60*60 # 1 week
|
|
else:
|
|
TTL = 28*24*60*60 # 4 weeks
|
|
TTL = int(TTL + random.randrange(-300, 300)) # Add some randomness to the TTL
|
|
embeddedTime = int(time.time() + TTL)
|
|
|
|
# type/version/stream already included
|
|
payload = pack('>Q', (embeddedTime)) + ackdata
|
|
|
|
target = 2 ** 64 / (defaults.networkDefaultProofOfWorkNonceTrialsPerByte*(len(payload) + 8 + defaults.networkDefaultPayloadLengthExtraBytes + ((TTL*(len(payload)+8+defaults.networkDefaultPayloadLengthExtraBytes))/(2 ** 16))))
|
|
logger.info('(For ack message) Doing proof of work. TTL set to ' + str(TTL))
|
|
|
|
powStartTime = time.time()
|
|
initialHash = hashlib.sha512(payload).digest()
|
|
trialValue, nonce = proofofwork.run(target, initialHash)
|
|
logger.info('(For ack message) Found proof of work ' + str(trialValue) + ' Nonce: ' + str(nonce))
|
|
try:
|
|
logger.info('PoW took %.1f seconds, speed %s.', time.time() - powStartTime, sizeof_fmt(nonce / (time.time() - powStartTime)))
|
|
except:
|
|
pass
|
|
|
|
payload = pack('>Q', nonce) + payload
|
|
return protocol.CreatePacket('object', payload)
|