def calc_jackpotcoin(self):
     # JACKPOT 
     if self.jackpotcoin is None:
         r = []
         r.append(struct.pack("<i", self.nVersion))
         r.append(ser_uint256(self.hashPrevBlock))
         r.append(ser_uint256(self.hashMerkleRoot))
         r.append(struct.pack("<I", self.nTime))
         r.append(struct.pack("<I", self.nBits))
         r.append(struct.pack("<I", self.nNonce))
         r.append(struct.pack("<i", self.nSuperBlock))     
         r.append(struct.pack("<i", self.nRoundMask))
         self.jackpotcoin = uint256_from_str(jackpotcoin_hash.gethash(''.join(r)))
     return self.jackpotcoin
Beispiel #2
0
 def calc_jackpotcoin(self):
     # JACKPOT
     if self.jackpotcoin is None:
         r = []
         r.append(struct.pack("<i", self.nVersion))
         r.append(ser_uint256(self.hashPrevBlock))
         r.append(ser_uint256(self.hashMerkleRoot))
         r.append(struct.pack("<I", self.nTime))
         r.append(struct.pack("<I", self.nBits))
         r.append(struct.pack("<I", self.nNonce))
         r.append(struct.pack("<i", self.nSuperBlock))
         r.append(struct.pack("<i", self.nRoundMask))
         self.jackpotcoin = uint256_from_str(
             jackpotcoin_hash.gethash(''.join(r)))
     return self.jackpotcoin
Beispiel #3
0
    def submit_share(self, job_id, worker_name, session, extranonce1_bin, extranonce2, ntime, nonce, difficulty):
        '''Check parameters and finalize block template. If it leads
           to valid block candidate, asynchronously submits the block
           back to the bitcoin network.

            - extranonce1_bin is binary. No checks performed, it should be from session data
            - job_id, extranonce2, ntime, nonce - in hex form sent by the client
            - difficulty - decimal number from session, again no checks performed
            - submitblock_callback - reference to method which receive result of submitblock()
        '''

        # Check if extranonce2 looks correctly. extranonce2 is in hex form...
        if len(extranonce2) != self.extranonce2_size * 2:
            raise SubmitException("Incorrect size of extranonce2. Expected %d chars" % (self.extranonce2_size*2))

        # Check for job
        job = self.get_job(job_id)
        if job == None:
            raise SubmitException("Job '%s' not found" % job_id)

        # Check if ntime looks correct
        if len(ntime) != 8:
            raise SubmitException("Incorrect size of ntime. Expected 8 chars")

        if not job.check_ntime(int(ntime, 16)):
            raise SubmitException("Ntime out of range")

        # Check nonce
        if len(nonce) != 8:
            raise SubmitException("Incorrect size of nonce. Expected 8 chars")

        # Check for duplicated submit
        if not job.register_submit(extranonce1_bin, extranonce2, ntime, nonce):
            log.info("Duplicate from %s, (%s %s %s %s)" % \
                    (worker_name, binascii.hexlify(extranonce1_bin), extranonce2, ntime, nonce))
            raise SubmitException("Duplicate share")

        # Now let's do the hard work!
        # ---------------------------

        # 0. Some sugar
        extranonce2_bin = binascii.unhexlify(extranonce2)
        ntime_bin = binascii.unhexlify(ntime)
        nonce_bin = binascii.unhexlify(nonce)

        # 1. Build coinbase
        coinbase_bin = job.serialize_coinbase(extranonce1_bin, extranonce2_bin)
        coinbase_hash = util.doublesha(coinbase_bin)

        # 2. Calculate merkle root
        merkle_root_bin = job.merkletree.withFirst(coinbase_hash)
        merkle_root_int = util.uint256_from_str(merkle_root_bin)

        # 3. Serialize header with given merkle, ntime and nonce
        header_bin = job.serialize_header(merkle_root_int, ntime_bin, nonce_bin)
      
        # 4. Reverse header and compare it with target of the user
        # JACKPOT - need to get 88 bytes (22x4)
        if settings.COINDAEMON_ALGO == 'scrypt':
            hash_bin = ltc_scrypt.getPoWHash(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 20) ]))
        elif settings.COINDAEMON_ALGO == 'jackpotcoin':
            hash_bin = jackpotcoin_hash.gethash(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 22) ]))
        else:
            hash_bin = util.doublesha(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 20) ]))

        hash_int = util.uint256_from_str(hash_bin)
        scrypt_hash_hex = "%064x" % hash_int
        header_hex = binascii.hexlify(header_bin)
        
        # JACKPOT - 40bytes padding
        if settings.COINDAEMON_ALGO == 'scrypt':
            header_hex = header_hex+"000000800000000000000000000000000000000000000000000000000000000000000000000000000000000080020000"
        elif settings.COINDAEMON_ALGO == 'jackpotcoin':
            header_hex = header_hex+"000000800000000000000000000000000000000000000000000000000000000000000000c0020000"
        else: pass

        target_user = self.diff_to_target(difficulty)
        if hash_int > target_user:
	          raise SubmitException("Share is above target")

        # Mostly for debugging purposes
        target_info = self.diff_to_target(100000)
        if hash_int <= target_info:
            log.info("Yay, share with diff above 100000")

        # Algebra tells us the diff_to_target is the same as hash_to_diff
        share_diff = int(self.diff_to_target(hash_int))

        # 5. Compare hash with target of the network
        if hash_int <= job.target:
            # Yay! It is block candidate!
            log.info("We found a block candidate! %s" % scrypt_hash_hex)

            # Reverse the header and get the potential block hash (for scrypt only)
            # JACKPOT - 22x4 bytes 
            if settings.COINDAEMON_ALGO == 'jackpotcoin':
            	  block_hash_bin = util.doublesha(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 22) ]))
            else:
            	  block_hash_bin = util.doublesha(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 20) ]))
            block_hash_hex = block_hash_bin[::-1].encode('hex_codec')

            # 6. Finalize and serialize block object
            job.finalize(merkle_root_int, extranonce1_bin, extranonce2_bin, int(ntime, 16), int(nonce, 16))

            if not job.is_valid():
                # Should not happen
                log.exception("FINAL JOB VALIDATION FAILED!(Try enabling/disabling tx messages)")

            # 7. Submit block to the network
            serialized = binascii.hexlify(job.serialize())
            on_submit = self.bitcoin_rpc.submitblock(serialized, block_hash_hex, scrypt_hash_hex)
            if on_submit:
                self.update_block()

            if settings.SOLUTION_BLOCK_HASH:
                return (header_hex, block_hash_hex, share_diff, on_submit)
            else:
                return (header_hex, scrypt_hash_hex, share_diff, on_submit)

        if settings.SOLUTION_BLOCK_HASH:
        # Reverse the header and get the potential block hash (for scrypt only) only do this if we want to send in the block hash to the shares table
        # JACKPOT - 22x4 bytes 
            if settings.COINDAEMON_ALGO == 'jackpotcoin':
                block_hash_bin = util.doublesha(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 22) ]))
            else:
                block_hash_bin = util.doublesha(''.join([ header_bin[i*4:i*4+4][::-1] for i in range(0, 20) ]))
            block_hash_hex = block_hash_bin[::-1].encode('hex_codec')
            return (header_hex, block_hash_hex, share_diff, None)
        else:
            return (header_hex, scrypt_hash_hex, share_diff, None)