def processmsg(self, data):
messageProcessingStartTime = time.time()
shared.numberOfMessagesProcessed += 1
shared.UISignalQueue.put(
('updateNumberOfMessagesProcessed', 'no data'))
readPosition = 20 # bypass the nonce, time, and object type
msgVersion, msgVersionLength = decodeVarint(
data[readPosition:readPosition + 9])
if msgVersion != 1:
logger.info(
'Cannot understand message versions other than one. Ignoring message.'
)
return
readPosition += msgVersionLength
streamNumberAsClaimedByMsg, streamNumberAsClaimedByMsgLength = decodeVarint(
data[readPosition:readPosition + 9])
readPosition += streamNumberAsClaimedByMsgLength
inventoryHash = calculateInventoryHash(data)
initialDecryptionSuccessful = False
# Let's check whether this is a message acknowledgement bound for us.
if data[-32:] in shared.ackdataForWhichImWatching:
logger.info('This msg IS an acknowledgement bound for me.')
del shared.ackdataForWhichImWatching[data[-32:]]
sqlExecute('UPDATE sent SET status=? WHERE ackdata=?',
'ackreceived', data[-32:])
shared.UISignalQueue.put(
('updateSentItemStatusByAckdata',
(data[-32:],
tr.translateText(
"MainWindow",
'Acknowledgement of the message received. %1').arg(
l10n.formatTimestamp()))))
return
else:
logger.info('This was NOT an acknowledgement bound for me.')
# This is not an acknowledgement bound for me. See if it is a message
# bound for me by trying to decrypt it with my private keys.
for key, cryptorObject in shared.myECCryptorObjects.items():
try:
decryptedData = cryptorObject.decrypt(data[readPosition:])
toRipe = key # This is the RIPE hash of my pubkeys. We need this below to compare to the destination_ripe included in the encrypted data.
initialDecryptionSuccessful = True
logger.info(
'EC decryption successful using key associated with ripe hash: %s.'
% key.encode('hex'))
break
except Exception as err:
pass
if not initialDecryptionSuccessful:
# This is not a message bound for me.
logger.info(
'Length of time program spent failing to decrypt this message: %s seconds.'
% (time.time() - messageProcessingStartTime, ))
return
# This is a message bound for me.
toAddress = shared.myAddressesByHash[
toRipe] # Look up my address based on the RIPE hash.
readPosition = 0
sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint(
decryptedData[readPosition:readPosition + 10])
readPosition += sendersAddressVersionNumberLength
if sendersAddressVersionNumber == 0:
logger.info(
'Cannot understand sendersAddressVersionNumber = 0. Ignoring message.'
)
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]
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.
sqlExecute('''INSERT INTO pubkeys VALUES (?,?,?,?,?)''', ripe.digest(),
sendersAddressVersionNumber,
decryptedData[:endOfThePublicKeyPosition], int(time.time()),
'yes')
# 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.
if sendersAddressVersionNumber <= 3:
self.possibleNewPubkey(ripe=ripe.digest())
elif sendersAddressVersionNumber >= 4:
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 sendMsg(self):
# Check to see if there are any messages queued to be sent
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''SELECT DISTINCT toaddress FROM sent WHERE (status='msgqueued' AND folder='sent')''')
shared.sqlSubmitQueue.put('')
queryreturn = shared.sqlReturnQueue.get()
shared.sqlLock.release()
for row in queryreturn: # For each address to which we need to send a message, check to see if we have its pubkey already.
toaddress, = row
toripe = decodeAddress(toaddress)[3]
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''SELECT hash FROM pubkeys WHERE hash=? ''')
shared.sqlSubmitQueue.put((toripe,))
queryreturn = shared.sqlReturnQueue.get()
shared.sqlLock.release()
if queryreturn != []: # If we have the needed pubkey, set the status to doingmsgpow (we'll do it further down)
t = (toaddress,)
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''UPDATE sent SET status='doingmsgpow' WHERE toaddress=? AND status='msgqueued' ''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
else: # We don't have the needed pubkey. Set the status to 'awaitingpubkey' and request it if we haven't already
if toripe in shared.neededPubkeys:
# We already sent a request for the pubkey
t = (toaddress,)
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''UPDATE sent SET status='awaitingpubkey' WHERE toaddress=? AND status='msgqueued' ''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
shared.UISignalQueue.put(('updateSentItemStatusByHash', (
toripe, tr.translateText("MainWindow",'Encryption key was requested earlier.'))))
else:
# We have not yet sent a request for the pubkey
t = (toaddress,)
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''UPDATE sent SET status='doingpubkeypow' WHERE toaddress=? AND status='msgqueued' ''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
shared.UISignalQueue.put(('updateSentItemStatusByHash', (
toripe, tr.translateText("MainWindow",'Sending a request for the recipient\'s encryption key.'))))
self.requestPubKey(toaddress)
shared.sqlLock.acquire()
# Get all messages that are ready to be sent, and also all messages
# which we have sent in the last 28 days which were previously marked
# as 'toodifficult'. If the user as raised the maximum acceptable
# difficulty then those messages may now be sendable.
shared.sqlSubmitQueue.put(
'''SELECT toaddress, toripe, fromaddress, subject, message, ackdata, status FROM sent WHERE (status='doingmsgpow' or status='forcepow' or (status='toodifficult' and lastactiontime>?)) and folder='sent' ''')
shared.sqlSubmitQueue.put((int(time.time()) - 2419200,))
queryreturn = shared.sqlReturnQueue.get()
shared.sqlLock.release()
for row in queryreturn: # For each message we need to send..
toaddress, toripe, fromaddress, subject, message, ackdata, status = row
# There is a remote possibility that we may no longer have the
# recipient's pubkey. Let us make sure we still have it or else the
# sendMsg function will appear to freeze. This can happen if the
# user sends a message but doesn't let the POW function finish,
# then leaves their client off for a long time which could cause
# the needed pubkey to expire and be deleted.
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''SELECT hash FROM pubkeys WHERE hash=? ''')
shared.sqlSubmitQueue.put((toripe,))
queryreturn = shared.sqlReturnQueue.get()
shared.sqlLock.release()
if queryreturn == [] and toripe not in shared.neededPubkeys:
# We no longer have the needed pubkey and we haven't requested
# it.
with shared.printLock:
sys.stderr.write(
'For some reason, the status of a message in our outbox is \'doingmsgpow\' even though we lack the pubkey. Here is the RIPE hash of the needed pubkey: %s\n' % toripe.encode('hex'))
t = (toaddress,)
shared.sqlLock.acquire()
shared.sqlSubmitQueue.put(
'''UPDATE sent SET status='msgqueued' WHERE toaddress=? AND status='doingmsgpow' ''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
shared.UISignalQueue.put(('updateSentItemStatusByHash', (
toripe, tr.translateText("MainWindow",'Sending a request for the recipient\'s encryption key.'))))
self.requestPubKey(toaddress)
continue
shared.ackdataForWhichImWatching[ackdata] = 0
toStatus, toAddressVersionNumber, toStreamNumber, toHash = decodeAddress(
toaddress)
fromStatus, fromAddressVersionNumber, fromStreamNumber, fromHash = decodeAddress(
fromaddress)
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("MainWindow", "Looking up the receiver\'s public key"))))
with shared.printLock:
print 'Found a message in our database that needs to be sent with this pubkey.'
print 'First 150 characters of message:', repr(message[:150])
# mark the pubkey as 'usedpersonally' so that we don't ever delete
# it.
shared.sqlLock.acquire()
t = (toripe,)
shared.sqlSubmitQueue.put(
'''UPDATE pubkeys SET usedpersonally='yes' WHERE hash=?''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
# 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.
shared.sqlSubmitQueue.put(
'SELECT transmitdata FROM pubkeys WHERE hash=?')
shared.sqlSubmitQueue.put((toripe,))
queryreturn = shared.sqlReturnQueue.get()
shared.sqlLock.release()
if queryreturn == []:
with shared.printLock:
sys.stderr.write(
'(within sendMsg) The needed pubkey was not found. This should never happen. Aborting send.\n')
return
for row in queryreturn:
pubkeyPayload, = row
# The pubkey message is stored the way we originally received it
# which means that we need to read beyond things like the nonce and
# time to get to the actual public keys.
readPosition = 8 # to bypass the nonce
pubkeyEmbeddedTime, = unpack(
'>I', pubkeyPayload[readPosition:readPosition + 4])
# This section is used for the transition from 32 bit time to 64
# bit time in the protocol.
if pubkeyEmbeddedTime == 0:
pubkeyEmbeddedTime, = unpack(
'>Q', pubkeyPayload[readPosition:readPosition + 8])
readPosition += 8
else:
readPosition += 4
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]
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
if toAddressVersionNumber == 2:
requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte
requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("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 < shared.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 = shared.networkDefaultProofOfWorkNonceTrialsPerByte
if requiredPayloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes:
requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Doing work necessary to send message.\nReceiver\'s required difficulty: %1 and %2").arg(str(float(
requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes)))))
if status != 'forcepow':
if (requiredAverageProofOfWorkNonceTrialsPerByte > shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') and shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') != 0) or (requiredPayloadLengthExtraBytes > shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') and shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') != 0):
# The demanded difficulty is more than we are willing
# to do.
shared.sqlLock.acquire()
t = (ackdata,)
shared.sqlSubmitQueue.put(
'''UPDATE sent SET status='toodifficult' WHERE ackdata=? ''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Problem: The work demanded by the recipient (%1 and %2) is more difficult than you are willing to do.").arg(str(float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(
requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes)).arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8')))))
continue
embeddedTime = pack('>Q', (int(time.time()) + random.randrange(
-300, 300))) # the current time plus or minus five minutes. We will use this time both for our message and for the ackdata packed within our message.
if fromAddressVersionNumber == 2:
payload = '\x01' # Message version.
payload += encodeVarint(fromAddressVersionNumber)
payload += encodeVarint(fromStreamNumber)
payload += '\x00\x00\x00\x01' # 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 = shared.config.get(
fromaddress, 'privsigningkey')
privEncryptionKeyBase58 = shared.config.get(
fromaddress, 'privencryptionkey')
except:
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file."))))
continue
privSigningKeyHex = shared.decodeWalletImportFormat(
privSigningKeyBase58).encode('hex')
privEncryptionKeyHex = shared.decodeWalletImportFormat(
privEncryptionKeyBase58).encode('hex')
pubSigningKey = highlevelcrypto.privToPub(
privSigningKeyHex).decode('hex')
pubEncryptionKey = highlevelcrypto.privToPub(
privEncryptionKeyHex).decode('hex')
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:]
payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack.
payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki.
messageToTransmit = 'Subject:' + \
subject + '\n' + 'Body:' + message
payload += encodeVarint(len(messageToTransmit))
payload += messageToTransmit
fullAckPayload = self.generateFullAckMessage(
ackdata, toStreamNumber, embeddedTime) # 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
signature = highlevelcrypto.sign(payload, privSigningKeyHex)
payload += encodeVarint(len(signature))
payload += signature
if fromAddressVersionNumber == 3:
payload = '\x01' # Message version.
payload += encodeVarint(fromAddressVersionNumber)
payload += encodeVarint(fromStreamNumber)
payload += '\x00\x00\x00\x01' # 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 = shared.config.get(
fromaddress, 'privsigningkey')
privEncryptionKeyBase58 = shared.config.get(
fromaddress, 'privencryptionkey')
except:
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file."))))
continue
privSigningKeyHex = shared.decodeWalletImportFormat(
privSigningKeyBase58).encode('hex')
privEncryptionKeyHex = shared.decodeWalletImportFormat(
privEncryptionKeyBase58).encode('hex')
pubSigningKey = highlevelcrypto.privToPub(
privSigningKeyHex).decode('hex')
pubEncryptionKey = highlevelcrypto.privToPub(
privEncryptionKeyHex).decode('hex')
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 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(
shared.networkDefaultProofOfWorkNonceTrialsPerByte)
payload += encodeVarint(
shared.networkDefaultPayloadLengthExtraBytes)
else:
payload += encodeVarint(shared.config.getint(
fromaddress, 'noncetrialsperbyte'))
payload += encodeVarint(shared.config.getint(
fromaddress, 'payloadlengthextrabytes'))
payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack.
payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki.
messageToTransmit = 'Subject:' + \
subject + '\n' + 'Body:' + message
payload += encodeVarint(len(messageToTransmit))
payload += messageToTransmit
fullAckPayload = self.generateFullAckMessage(
ackdata, toStreamNumber, embeddedTime) # 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
signature = highlevelcrypto.sign(payload, privSigningKeyHex)
payload += encodeVarint(len(signature))
payload += signature
# We have assembled the data that will be encrypted.
try:
encrypted = highlevelcrypto.encrypt(payload,"04"+pubEncryptionKeyBase256.encode('hex'))
except:
shared.sqlLock.acquire()
t = (ackdata,)
shared.sqlSubmitQueue.put('''UPDATE sent SET status='badkey' WHERE ackdata=?''')
shared.sqlSubmitQueue.put(t)
queryreturn = shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr.translateText("MainWindow",'Problem: The recipient\'s encryption key is no good. Could not encrypt message. %1').arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'),localtime(int(time.time()))),'utf-8')))))
continue
encryptedPayload = embeddedTime + encodeVarint(toStreamNumber) + encrypted
target = 2**64 / ((len(encryptedPayload)+requiredPayloadLengthExtraBytes+8) * requiredAverageProofOfWorkNonceTrialsPerByte)
with shared.printLock:
print '(For msg message) Doing proof of work. Total required difficulty:', float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte, 'Required small message difficulty:', float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes
powStartTime = time.time()
initialHash = hashlib.sha512(encryptedPayload).digest()
trialValue, nonce = proofofwork.run(target, initialHash)
with shared.printLock:
print '(For msg message) Found proof of work', trialValue, 'Nonce:', nonce
try:
print 'POW took', int(time.time() - powStartTime), 'seconds.', nonce / (time.time() - powStartTime), 'nonce trials per second.'
except:
pass
encryptedPayload = pack('>Q', nonce) + encryptedPayload
inventoryHash = calculateInventoryHash(encryptedPayload)
objectType = 'msg'
shared.inventory[inventoryHash] = (
objectType, toStreamNumber, encryptedPayload, int(time.time()))
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Message sent. Waiting on acknowledgement. Sent on %1").arg(unicode(
strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8')))))
print 'Broadcasting inv for my msg(within sendmsg function):', inventoryHash.encode('hex')
shared.broadcastToSendDataQueues((
streamNumber, 'sendinv', inventoryHash))
# Update the status of the message in the 'sent' table to have a
# 'msgsent' status
shared.sqlLock.acquire()
t = (ackdata,)
shared.sqlSubmitQueue.put('''UPDATE sent SET status='msgsent' WHERE ackdata=?''')
shared.sqlSubmitQueue.put(t)
queryreturn = shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
shared.sqlLock.release()
def processmsg(self, data):
messageProcessingStartTime = time.time()
shared.numberOfMessagesProcessed += 1
shared.UISignalQueue.put((
'updateNumberOfMessagesProcessed', 'no data'))
readPosition = 20 # bypass the nonce, time, and object type
msgVersion, msgVersionLength = decodeVarint(data[readPosition:readPosition + 9])
if msgVersion != 1:
logger.info('Cannot understand message versions other than one. Ignoring message.')
return
readPosition += msgVersionLength
streamNumberAsClaimedByMsg, streamNumberAsClaimedByMsgLength = decodeVarint(
data[readPosition:readPosition + 9])
readPosition += streamNumberAsClaimedByMsgLength
inventoryHash = calculateInventoryHash(data)
initialDecryptionSuccessful = False
# Let's check whether this is a message acknowledgement bound for us.
if data[-32:] in shared.ackdataForWhichImWatching:
logger.info('This msg IS an acknowledgement bound for me.')
del shared.ackdataForWhichImWatching[data[-32:]]
sqlExecute('UPDATE sent SET status=?, lastactiontime=? WHERE ackdata=?',
'ackreceived',
int(time.time()),
data[-32:])
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (data[-32:], tr.translateText("MainWindow",'Acknowledgement of the message received. %1').arg(l10n.formatTimestamp()))))
return
else:
logger.info('This was NOT an acknowledgement bound for me.')
# This is not an acknowledgement bound for me. See if it is a message
# bound for me by trying to decrypt it with my private keys.
for key, cryptorObject in shared.myECCryptorObjects.items():
try:
decryptedData = cryptorObject.decrypt(data[readPosition:])
toRipe = key # This is the RIPE hash of my pubkeys. We need this below to compare to the destination_ripe included in the encrypted data.
initialDecryptionSuccessful = True
logger.info('EC decryption successful using key associated with ripe hash: %s.' % key.encode('hex'))
break
except Exception as err:
pass
if not initialDecryptionSuccessful:
# This is not a message bound for me.
logger.info('Length of time program spent failing to decrypt this message: %s seconds.' % (time.time() - messageProcessingStartTime,))
return
# This is a message bound for me.
toAddress = shared.myAddressesByHash[
toRipe] # Look up my address based on the RIPE hash.
readPosition = 0
sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint(
decryptedData[readPosition:readPosition + 10])
readPosition += sendersAddressVersionNumberLength
if sendersAddressVersionNumber == 0:
logger.info('Cannot understand sendersAddressVersionNumber = 0. Ignoring message.')
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]
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))
)
sigHash = hashlib.sha512(hashlib.sha512(signature).digest()).digest()[32:] # Used to detect and ignore duplicate messages in our inbox
# 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.
sqlExecute(
'''INSERT INTO pubkeys VALUES (?,?,?,?,?)''',
fromAddress,
sendersAddressVersionNumber,
decryptedData[:endOfThePublicKeyPosition],
int(time.time()),
'yes')
# 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(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(sigHash):
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, sigHash)
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 = ''
# We really should have a discussion about how to
# set the TTL for mailing list broadcasts. This is obviously
# hard-coded.
TTL = 2*7*24*60*60 # 2 weeks
t = ('',
toAddress,
ripe,
fromAddress,
subject,
message,
ackdataForBroadcast,
int(time.time()), # sentTime (this doesn't change)
int(time.time()), # lastActionTime
0,
'broadcastqueued',
0,
'sent',
2,
TTL)
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 processmsg(self, data):
messageProcessingStartTime = time.time()
shared.numberOfMessagesProcessed += 1
queues.UISignalQueue.put((
'updateNumberOfMessagesProcessed', 'no data'))
readPosition = 20 # bypass the nonce, time, and object type
msgVersion, msgVersionLength = decodeVarint(data[readPosition:readPosition + 9])
if msgVersion != 1:
logger.info('Cannot understand message versions other than one. Ignoring message.')
return
readPosition += msgVersionLength
streamNumberAsClaimedByMsg, streamNumberAsClaimedByMsgLength = decodeVarint(
data[readPosition:readPosition + 9])
readPosition += streamNumberAsClaimedByMsgLength
inventoryHash = calculateInventoryHash(data)
initialDecryptionSuccessful = False
# This is not an acknowledgement bound for me. See if it is a message
# bound for me by trying to decrypt it with my private keys.
for key, cryptorObject in shared.myECCryptorObjects.items():
try:
if initialDecryptionSuccessful: # continue decryption attempts to avoid timing attacks
cryptorObject.decrypt(data[readPosition:])
else:
decryptedData = cryptorObject.decrypt(data[readPosition:])
toRipe = key # This is the RIPE hash of my pubkeys. We need this below to compare to the destination_ripe included in the encrypted data.
initialDecryptionSuccessful = True
logger.info('EC decryption successful using key associated with ripe hash: %s.' % hexlify(key))
except Exception as err:
pass
if not initialDecryptionSuccessful:
# This is not a message bound for me.
logger.info('Length of time program spent failing to decrypt this message: %s seconds.' % (time.time() - messageProcessingStartTime,))
return
# This is a message bound for me.
toAddress = shared.myAddressesByHash[
toRipe] # Look up my address based on the RIPE hash.
readPosition = 0
sendersAddressVersionNumber, sendersAddressVersionNumberLength = decodeVarint(
decryptedData[readPosition:readPosition + 10])
readPosition += sendersAddressVersionNumberLength
if sendersAddressVersionNumber == 0:
logger.info('Cannot understand sendersAddressVersionNumber = 0. Ignoring message.')
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' % (hexlify(toRipe), hexlify(decryptedData[readPosition:readPosition + 20]))
)
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]
signedData = data[8:20] + encodeVarint(1) + encodeVarint(streamNumberAsClaimedByMsg) + decryptedData[:positionOfBottomOfAckData]
if not highlevelcrypto.verify(signedData, signature, hexlify(pubSigningKey)):
logger.debug('ECDSA verify failed')
return
logger.debug('ECDSA verify passed')
sigHash = hashlib.sha512(hashlib.sha512(signature).digest()).digest()[32:] # Used to detect and ignore duplicate messages in our inbox
# 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.
sqlExecute(
'''INSERT INTO pubkeys VALUES (?,?,?,?,?)''',
fromAddress,
sendersAddressVersionNumber,
decryptedData[:endOfThePublicKeyPosition],
int(time.time()),
'yes')
# 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(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 BMConfigParser().safeGetBoolean(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 = BMConfigParser().getint(
toAddress, 'noncetrialsperbyte')
requiredPayloadLengthExtraBytes = BMConfigParser().getint(
toAddress, 'payloadlengthextrabytes')
if not protocol.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 BMConfigParser().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 = BMConfigParser().get(toAddress, 'label')
if toLabel == '':
toLabel = toAddress
decodedMessage = helper_msgcoding.MsgDecode(messageEncodingType, message)
subject = decodedMessage.subject
body = decodedMessage.body
# Let us make sure that we haven't already received this message
if helper_inbox.isMessageAlreadyInInbox(sigHash):
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, sigHash)
helper_inbox.insert(t)
queues.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 BMConfigParser().safeGetBoolean('bitmessagesettings', 'apienabled'):
try:
apiNotifyPath = BMConfigParser().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 BMConfigParser().safeGetBoolean(toAddress, 'mailinglist') and messageEncodingType != 0:
try:
mailingListName = BMConfigParser().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 = ''
# We really should have a discussion about how to
# set the TTL for mailing list broadcasts. This is obviously
# hard-coded.
TTL = 2*7*24*60*60 # 2 weeks
t = ('',
toAddress,
ripe,
fromAddress,
subject,
message,
ackdataForBroadcast,
int(time.time()), # sentTime (this doesn't change)
int(time.time()), # lastActionTime
0,
'broadcastqueued',
0,
'sent',
messageEncodingType,
TTL)
helper_sent.insert(t)
queues.UISignalQueue.put(('displayNewSentMessage', (
toAddress, '[Broadcast subscribers]', fromAddress, subject, message, ackdataForBroadcast)))
queues.workerQueue.put(('sendbroadcast', ''))
# Don't send ACK if invalid, blacklisted senders, invisible messages, disabled or chan
if self.ackDataHasAValidHeader(ackData) and \
not blockMessage and \
messageEncodingType != 0 and \
not BMConfigParser().safeGetBoolean(toAddress, 'dontsendack') and \
not BMConfigParser().safeGetBoolean(toAddress, 'chan'):
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 sendMsg(self):
# Check to see if there are any messages queued to be sent
queryreturn = sqlQuery(
'''SELECT DISTINCT toaddress FROM sent WHERE (status='msgqueued' AND folder='sent')''')
for row in queryreturn: # For each address to which we need to send a message, check to see if we have its pubkey already.
toaddress, = row
toripe = decodeAddress(toaddress)[3]
queryreturn = sqlQuery(
'''SELECT hash FROM pubkeys WHERE hash=? ''', toripe)
if queryreturn != []: # If we have the needed pubkey, set the status to doingmsgpow (we'll do it further down)
sqlExecute(
'''UPDATE sent SET status='doingmsgpow' WHERE toaddress=? AND status='msgqueued' ''',
toaddress)
else: # We don't have the needed pubkey. Set the status to 'awaitingpubkey' and request it if we haven't already
if toripe in shared.neededPubkeys:
# We already sent a request for the pubkey
sqlExecute(
'''UPDATE sent SET status='awaitingpubkey' WHERE toaddress=? AND status='msgqueued' ''', toaddress)
shared.UISignalQueue.put(('updateSentItemStatusByHash', (
toripe, tr.translateText("MainWindow",'Encryption key was requested earlier.'))))
else:
# We have not yet sent a request for the pubkey
sqlExecute(
'''UPDATE sent SET status='doingpubkeypow' WHERE toaddress=? AND status='msgqueued' ''',
toaddress)
shared.UISignalQueue.put(('updateSentItemStatusByHash', (
toripe, tr.translateText("MainWindow",'Sending a request for the recipient\'s encryption key.'))))
self.requestPubKey(toaddress)
# Get all messages that are ready to be sent, and also all messages
# which we have sent in the last 28 days which were previously marked
# as 'toodifficult'. If the user as raised the maximum acceptable
# difficulty then those messages may now be sendable.
queryreturn = sqlQuery(
'''SELECT toaddress, toripe, fromaddress, subject, message, ackdata, status FROM sent WHERE (status='doingmsgpow' or status='forcepow' or (status='toodifficult' and lastactiontime>?)) and folder='sent' ''',
int(time.time()) - 2419200)
for row in queryreturn: # For each message we need to send..
toaddress, toripe, fromaddress, subject, message, ackdata, status = row
# There is a remote possibility that we may no longer have the
# recipient's pubkey. Let us make sure we still have it or else the
# sendMsg function will appear to freeze. This can happen if the
# user sends a message but doesn't let the POW function finish,
# then leaves their client off for a long time which could cause
# the needed pubkey to expire and be deleted.
queryreturn = sqlQuery(
'''SELECT hash FROM pubkeys WHERE hash=? ''',
toripe)
if queryreturn == [] and toripe not in shared.neededPubkeys:
# We no longer have the needed pubkey and we haven't requested
# it.
with shared.printLock:
sys.stderr.write(
'For some reason, the status of a message in our outbox is \'doingmsgpow\' even though we lack the pubkey. Here is the RIPE hash of the needed pubkey: %s\n' % toripe.encode('hex'))
sqlExecute(
'''UPDATE sent SET status='msgqueued' WHERE toaddress=? AND status='doingmsgpow' ''', toaddress)
shared.UISignalQueue.put(('updateSentItemStatusByHash', (
toripe, tr.translateText("MainWindow",'Sending a request for the recipient\'s encryption key.'))))
self.requestPubKey(toaddress)
continue
shared.ackdataForWhichImWatching[ackdata] = 0
toStatus, toAddressVersionNumber, toStreamNumber, toHash = decodeAddress(
toaddress)
fromStatus, fromAddressVersionNumber, fromStreamNumber, fromHash = decodeAddress(
fromaddress)
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("MainWindow", "Looking up the receiver\'s public key"))))
with shared.printLock:
print 'Found a message in our database that needs to be sent with this pubkey.'
print 'First 150 characters of message:', repr(message[:150])
# mark the pubkey as 'usedpersonally' so that we don't ever delete
# it.
sqlExecute(
'''UPDATE pubkeys SET usedpersonally='yes' WHERE hash=?''',
toripe)
# 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 hash=?',
toripe)
if queryreturn == []:
with shared.printLock:
sys.stderr.write(
'(within sendMsg) The needed pubkey was not found. This should never happen. Aborting send.\n')
return
for row in queryreturn:
pubkeyPayload, = row
# The pubkey message is stored the way we originally received it
# which means that we need to read beyond things like the nonce and
# time to get to the actual public keys.
readPosition = 8 # to bypass the nonce
pubkeyEmbeddedTime, = unpack(
'>I', pubkeyPayload[readPosition:readPosition + 4])
# This section is used for the transition from 32 bit time to 64
# bit time in the protocol.
if pubkeyEmbeddedTime == 0:
pubkeyEmbeddedTime, = unpack(
'>Q', pubkeyPayload[readPosition:readPosition + 8])
readPosition += 8
else:
readPosition += 4
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.safeConfigGetBoolean('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.')
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr.translateText("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(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'),localtime(int(time.time()))),'utf-8')))))
# 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 = shared.networkDefaultProofOfWorkNonceTrialsPerByte
requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("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 < shared.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 = shared.networkDefaultProofOfWorkNonceTrialsPerByte
if requiredPayloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes:
requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Doing work necessary to send message.\nReceiver\'s required difficulty: %1 and %2").arg(str(float(
requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes)))))
if status != 'forcepow':
if (requiredAverageProofOfWorkNonceTrialsPerByte > shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') and shared.config.getint('bitmessagesettings', 'maxacceptablenoncetrialsperbyte') != 0) or (requiredPayloadLengthExtraBytes > shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') and shared.config.getint('bitmessagesettings', 'maxacceptablepayloadlengthextrabytes') != 0):
# The demanded difficulty is more than we are willing
# to do.
sqlExecute(
'''UPDATE sent SET status='toodifficult' WHERE ackdata=? ''',
ackdata)
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Problem: The work demanded by the recipient (%1 and %2) is more difficult than you are willing to do.").arg(str(float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte)).arg(str(float(
requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes)).arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8')))))
continue
embeddedTime = pack('>Q', (int(time.time()) + random.randrange(
-300, 300))) # the current time plus or minus five minutes. We will use this time both for our message and for the ackdata packed within our message.
if fromAddressVersionNumber == 2:
payload = '\x01' # Message version.
payload += encodeVarint(fromAddressVersionNumber)
payload += encodeVarint(fromStreamNumber)
payload += '\x00\x00\x00\x01' # 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 = shared.config.get(
fromaddress, 'privsigningkey')
privEncryptionKeyBase58 = shared.config.get(
fromaddress, 'privencryptionkey')
except:
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file."))))
continue
privSigningKeyHex = shared.decodeWalletImportFormat(
privSigningKeyBase58).encode('hex')
privEncryptionKeyHex = shared.decodeWalletImportFormat(
privEncryptionKeyBase58).encode('hex')
pubSigningKey = highlevelcrypto.privToPub(
privSigningKeyHex).decode('hex')
pubEncryptionKey = highlevelcrypto.privToPub(
privEncryptionKeyHex).decode('hex')
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:]
payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack.
payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki.
messageToTransmit = 'Subject:' + \
subject + '\n' + 'Body:' + message
payload += encodeVarint(len(messageToTransmit))
payload += messageToTransmit
fullAckPayload = self.generateFullAckMessage(
ackdata, toStreamNumber, embeddedTime) # 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
signature = highlevelcrypto.sign(payload, privSigningKeyHex)
payload += encodeVarint(len(signature))
payload += signature
if fromAddressVersionNumber == 3:
payload = '\x01' # Message version.
payload += encodeVarint(fromAddressVersionNumber)
payload += encodeVarint(fromStreamNumber)
payload += '\x00\x00\x00\x01' # 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 = shared.config.get(
fromaddress, 'privsigningkey')
privEncryptionKeyBase58 = shared.config.get(
fromaddress, 'privencryptionkey')
except:
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (
ackdata, tr.translateText("MainWindow", "Error! Could not find sender address (your address) in the keys.dat file."))))
continue
privSigningKeyHex = shared.decodeWalletImportFormat(
privSigningKeyBase58).encode('hex')
privEncryptionKeyHex = shared.decodeWalletImportFormat(
privEncryptionKeyBase58).encode('hex')
pubSigningKey = highlevelcrypto.privToPub(
privSigningKeyHex).decode('hex')
pubEncryptionKey = highlevelcrypto.privToPub(
privEncryptionKeyHex).decode('hex')
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 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(
shared.networkDefaultProofOfWorkNonceTrialsPerByte)
payload += encodeVarint(
shared.networkDefaultPayloadLengthExtraBytes)
else:
payload += encodeVarint(shared.config.getint(
fromaddress, 'noncetrialsperbyte'))
payload += encodeVarint(shared.config.getint(
fromaddress, 'payloadlengthextrabytes'))
payload += toHash # This hash will be checked by the receiver of the message to verify that toHash belongs to them. This prevents a Surreptitious Forwarding Attack.
payload += '\x02' # Type 2 is simple UTF-8 message encoding as specified on the Protocol Specification on the Bitmessage Wiki.
messageToTransmit = 'Subject:' + \
subject + '\n' + 'Body:' + message
payload += encodeVarint(len(messageToTransmit))
payload += messageToTransmit
if shared.safeConfigGetBoolean(toaddress, 'chan'):
with shared.printLock:
print 'Not bothering to generate ackdata because we are sending to a chan.'
fullAckPayload = ''
elif not shared.isBitSetWithinBitfield(behaviorBitfield,31):
with shared.printLock:
print 'Not bothering to generate ackdata because the receiver said that they won\'t relay it anyway.'
fullAckPayload = ''
else:
fullAckPayload = self.generateFullAckMessage(
ackdata, toStreamNumber, embeddedTime) # 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
signature = highlevelcrypto.sign(payload, privSigningKeyHex)
payload += encodeVarint(len(signature))
payload += signature
# We have assembled the data that will be encrypted.
try:
encrypted = highlevelcrypto.encrypt(payload,"04"+pubEncryptionKeyBase256.encode('hex'))
except:
sqlExecute('''UPDATE sent SET status='badkey' WHERE ackdata=?''', ackdata)
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,tr.translateText("MainWindow",'Problem: The recipient\'s encryption key is no good. Could not encrypt message. %1').arg(unicode(strftime(shared.config.get('bitmessagesettings', 'timeformat'),localtime(int(time.time()))),'utf-8')))))
continue
encryptedPayload = embeddedTime + encodeVarint(toStreamNumber) + encrypted
target = 2**64 / ((len(encryptedPayload)+requiredPayloadLengthExtraBytes+8) * requiredAverageProofOfWorkNonceTrialsPerByte)
with shared.printLock:
print '(For msg message) Doing proof of work. Total required difficulty:', float(requiredAverageProofOfWorkNonceTrialsPerByte) / shared.networkDefaultProofOfWorkNonceTrialsPerByte, 'Required small message difficulty:', float(requiredPayloadLengthExtraBytes) / shared.networkDefaultPayloadLengthExtraBytes
powStartTime = time.time()
initialHash = hashlib.sha512(encryptedPayload).digest()
trialValue, nonce = proofofwork.run(target, initialHash)
with shared.printLock:
print '(For msg message) Found proof of work', trialValue, 'Nonce:', nonce
try:
print 'POW took', int(time.time() - powStartTime), 'seconds.', nonce / (time.time() - powStartTime), 'nonce trials per second.'
except:
pass
encryptedPayload = pack('>Q', nonce) + encryptedPayload
inventoryHash = calculateInventoryHash(encryptedPayload)
objectType = 'msg'
shared.inventory[inventoryHash] = (
objectType, toStreamNumber, encryptedPayload, int(time.time()))
if shared.safeConfigGetBoolean(toaddress, 'chan'):
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Message sent. Sent on %1").arg(unicode(
strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8')))))
else:
# not sending to a chan
shared.UISignalQueue.put(('updateSentItemStatusByAckdata', (ackdata, tr.translateText("MainWindow", "Message sent. Waiting on acknowledgement. Sent on %1").arg(unicode(
strftime(shared.config.get('bitmessagesettings', 'timeformat'), localtime(int(time.time()))), 'utf-8')))))
print 'Broadcasting inv for my msg(within sendmsg function):', inventoryHash.encode('hex')
shared.broadcastToSendDataQueues((
streamNumber, 'sendinv', inventoryHash))
# Update the status of the message in the 'sent' table to have a
# 'msgsent' status or 'msgsentnoackexpected' status.
if shared.safeConfigGetBoolean(toaddress, 'chan'):
newStatus = 'msgsentnoackexpected'
else:
newStatus = 'msgsent'
sqlExecute('''UPDATE sent SET msgid=?, status=? WHERE ackdata=?''',
inventoryHash,newStatus,ackdata)
