Bitmessage/PyBitmessage-2024-12-03
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Added max acceptable difficulty #204

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Atheros1 merged 6 commits from master into master 2013-06-11 22:19:55 +02:00
Conversation 0 Commits 6 Files Changed 6 +11 -7
1 changed files with 11 additions and 7 deletions
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Showing only changes of commit ee0c0f8c9b - Show all commits

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src/bitmessagemain.py
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@ -321,8 +321,7 @@ class receiveDataThread(threading.Thread):
if self.data[0:4] != '\xe9\xbe\xb4\xd9':
if verbose >= 1:
shared.printLock.acquire()
sys.stderr.write('The magic bytes were not correct. First 40 bytes of data: %s\n' % repr(self.data[0:40]))
print 'self.data:', self.data.encode('hex')
print 'The magic bytes were not correct. First 40 bytes of data: '+ repr(self.data[0:40])
shared.printLock.release()
self.data = ""
return
@ -1090,6 +1089,7 @@ class receiveDataThread(threading.Thread):
bodyPositionIndex = string.find(message,'\nBody:')
if bodyPositionIndex > 1:
subject = message[8:bodyPositionIndex]
subject = subject[:500] #Only save and show the first 500 characters of the subject. Any more is probably an attak.
body = message[bodyPositionIndex+6:]
else:
subject = ''
@ -1184,7 +1184,7 @@ class receiveDataThread(threading.Thread):
else:
return '['+mailingListName+'] ' + subject
def possiblyNewPubkey(self,toRipe):
def possibleNewPubkey(self,toRipe):
if toRipe in neededPubkeys:
print 'We have been awaiting the arrival of this pubkey.'
del neededPubkeys[toRipe]
@ -3014,7 +3014,7 @@ class singleWorker(threading.Thread):
ackdataForWhichImWatching[ackdata] = 0
toStatus,toAddressVersionNumber,toStreamNumber,toHash = decodeAddress(toaddress)
fromStatus,fromAddressVersionNumber,fromStreamNumber,fromHash = decodeAddress(fromaddress)
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,'Doing work necessary to send the message.')))
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,'Looking up the receiver\'s public key')))
shared.printLock.acquire()
print 'Found a message in our database that needs to be sent with this pubkey.'
print 'First 150 characters of message:', repr(message[:150])
@ -3061,6 +3061,7 @@ class singleWorker(threading.Thread):
if toAddressVersionNumber == 2:
requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte
requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,'Doing work necessary to send message. (There is no required difficulty for version 2 addresses like this.)')))
elif toAddressVersionNumber == 3:
requiredAverageProofOfWorkNonceTrialsPerByte, varintLength = decodeVarint(pubkeyPayload[readPosition:readPosition+10])
readPosition += varintLength
@ -3070,12 +3071,13 @@ class singleWorker(threading.Thread):
requiredAverageProofOfWorkNonceTrialsPerByte = shared.networkDefaultProofOfWorkNonceTrialsPerByte
if requiredPayloadLengthExtraBytes < shared.networkDefaultPayloadLengthExtraBytes:
requiredPayloadLengthExtraBytes = shared.networkDefaultPayloadLengthExtraBytes
shared.UISignalQueue.put(('updateSentItemStatusByAckdata',(ackdata,'Doing work necessary to send message. (Receiver\'s required difficulty: '+str(float(requiredAverageProofOfWorkNonceTrialsPerByte)/shared.networkDefaultProofOfWorkNonceTrialsPerByte)+' and '+ 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=? AND status='doingmsgpow' ''')
shared.sqlSubmitQueue.put('''UPDATE sent SET status='toodifficult' WHERE ackdata=? ''')
shared.sqlSubmitQueue.put(t)
shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')
@ -3173,11 +3175,13 @@ class singleWorker(threading.Thread):
powStartTime = time.time()
initialHash = hashlib.sha512(payload).digest()
trialValue, nonce = proofofwork.run(target, initialHash)
shared.printLock.acquire()
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
shared.printLock.release()
payload = pack('>Q',nonce) + payload
inventoryHash = calculateInventoryHash(payload)
@ -3189,8 +3193,8 @@ class singleWorker(threading.Thread):
#Update the status of the message in the 'sent' table to have a 'msgsent' status
shared.sqlLock.acquire()
t = (toaddress, fromaddress, subject, message)
shared.sqlSubmitQueue.put('''UPDATE sent SET status='msgsent' WHERE toaddress=? AND fromaddress=? AND subject=? AND message=? AND status='doingmsgpow' or status='forcepow' ''')
t = (ackdata,)
shared.sqlSubmitQueue.put('''UPDATE sent SET status='msgsent' WHERE ackdata=? AND status='doingmsgpow' or status='forcepow' ''')
shared.sqlSubmitQueue.put(t)
queryreturn = shared.sqlReturnQueue.get()
shared.sqlSubmitQueue.put('commit')