486 lines
25 KiB
Python
Executable File
486 lines
25 KiB
Python
Executable File
import requests
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import json
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import sqlite3
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import argparse
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import configparser
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import subprocess
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import sys
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import parsing
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import time
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import os
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import shutil
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from sqlalchemy.orm import sessionmaker, relationship
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from sqlalchemy import create_engine, func, desc
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from models import SystemData, ActiveTable, ConsumedTable, TransferLogs, TransactionHistory, Base, ContractStructure, ContractBase, ContractParticipants, SystemBase, ActiveContracts
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committeeAddressList = ['oUc4dVvxwK7w5MHUHtev8UawN3eDjiZnNx']
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def transferToken(tokenIdentification, tokenAmount, inputAddress, outputAddress):
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engine = create_engine('sqlite:///tokens/{}.db'.format(tokenIdentification), echo=True)
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Base.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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availableTokens = session.query(func.sum(ActiveTable.transferBalance)).filter_by(address=inputAddress).all()[0][0]
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commentTransferAmount = tokenAmount
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if availableTokens is None:
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print("The input address dosen't exist in our database ")
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session.close()
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return None
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elif availableTokens < commentTransferAmount:
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print("\nThe transfer amount passed in the comments is more than the user owns\nThis transaction will be discarded\n")
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session.close()
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return None
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elif availableTokens >= commentTransferAmount:
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table = session.query(ActiveTable).filter(ActiveTable.address==inputAddress).all()
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string = "{} getblock {}".format(localapi, transaction_data['blockhash'])
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response = subprocess.check_output(string, shell=True)
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block_data = json.loads(response.decode("utf-8"))
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pidlst = []
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checksum = 0
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for row in table:
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if checksum >= commentTransferAmount:
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break
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pidlst.append([row.id, row.transferBalance])
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checksum = checksum + row.transferBalance
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if checksum == commentTransferAmount:
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consumedpid_string = ''
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# Update all pids in pidlist's transferBalance to 0
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lastid = session.query(ActiveTable)[-1].id
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for piditem in pidlst:
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entry = session.query(ActiveTable).filter(ActiveTable.id == piditem[0]).all()
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consumedpid_string = consumedpid_string + '{},'.format(piditem[0])
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session.add(TransferLogs(sourceFloAddress=inputAddress, destFloAddress=outputAddress,
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transferAmount=entry[0].transferBalance, sourceId=piditem[0], destinationId=lastid+1,
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blockNumber=block_data['height'], time=block_data['time'],
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transactionHash=transaction_data['txid']))
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entry[0].transferBalance = 0
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if len(consumedpid_string)>1:
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consumedpid_string = consumedpid_string[:-1]
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# Make new entry
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session.add(ActiveTable(address=outputAddress, consumedpid=consumedpid_string,
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transferBalance=commentTransferAmount))
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# Migration
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# shift pid of used utxos from active to consumed
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for piditem in pidlst:
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# move the parentids consumed to consumedpid column in both activeTable and consumedTable
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entries = session.query(ActiveTable).filter(ActiveTable.parentid == piditem[0]).all()
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for entry in entries:
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entry.consumedpid = entry.consumedpid + ',{}'.format(piditem[0])
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entry.parentid = None
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entries = session.query(ConsumedTable).filter(ConsumedTable.parentid == piditem[0]).all()
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for entry in entries:
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entry.consumedpid = entry.consumedpid + ',{}'.format(piditem[0])
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entry.parentid = None
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# move the pids consumed in the transaction to consumedTable and delete them from activeTable
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session.execute(
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'INSERT INTO consumedTable (id, address, parentid, consumedpid, transferBalance) SELECT id, address, parentid, consumedpid, transferBalance FROM activeTable WHERE id={}'.format(
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piditem[0]))
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session.execute('DELETE FROM activeTable WHERE id={}'.format(piditem[0]))
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session.commit()
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session.commit()
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if checksum > commentTransferAmount:
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consumedpid_string = ''
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# Update all pids in pidlist's transferBalance
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lastid = session.query(ActiveTable)[-1].id
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for idx, piditem in enumerate(pidlst):
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entry = session.query(ActiveTable).filter(ActiveTable.id == piditem[0]).all()
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if idx != len(pidlst) - 1:
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session.add(TransferLogs(sourceFloAddress=inputAddress, destFloAddress=outputAddress,
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transferAmount=entry[0].transferBalance, sourceId=piditem[0],
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destinationId=lastid + 1,
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blockNumber=block_data['height'], time=block_data['time'],
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transactionHash=transaction_data['txid']))
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entry[0].transferBalance = 0
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consumedpid_string = consumedpid_string + '{},'.format(piditem[0])
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else:
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session.add(TransferLogs(sourceFloAddress=inputAddress, destFloAddress=outputAddress,
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transferAmount=piditem[1]-(checksum - commentTransferAmount), sourceId=piditem[0],
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destinationId=lastid + 1,
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blockNumber=block_data['height'], time=block_data['time'],
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transactionHash=transaction_data['txid']))
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entry[0].transferBalance = checksum - commentTransferAmount
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if len(consumedpid_string) > 1:
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consumedpid_string = consumedpid_string[:-1]
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# Make new entry
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session.add(ActiveTable(address=outputAddress, parentid= pidlst[-1][0], consumedpid=consumedpid_string,
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transferBalance=commentTransferAmount))
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# Migration
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# shift pid of used utxos from active to consumed
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for piditem in pidlst[:-1]:
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# move the parentids consumed to consumedpid column in both activeTable and consumedTable
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entries = session.query(ActiveTable).filter(ActiveTable.parentid == piditem[0]).all()
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for entry in entries:
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entry.consumedpid = entry.consumedpid + ',{}'.format(piditem[0])
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entry.parentid = None
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entries = session.query(ConsumedTable).filter(ConsumedTable.parentid == piditem[0]).all()
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for entry in entries:
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entry.consumedpid = entry.consumedpid + ',{}'.format(piditem[0])
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entry.parentid = None
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# move the pids consumed in the transaction to consumedTable and delete them from activeTable
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session.execute(
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'INSERT INTO consumedTable (id, address, parentid, consumedpid, transferBalance) SELECT id, address, parentid, consumedpid, transferBalance FROM activeTable WHERE id={}'.format(
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piditem[0]))
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session.execute('DELETE FROM activeTable WHERE id={}'.format(piditem[0]))
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session.commit()
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session.commit()
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string = "{} getblock {}".format(localapi, transaction_data['blockhash'])
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response = subprocess.check_output(string, shell=True)
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block_data = json.loads(response.decode("utf-8"))
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blockchainReference = neturl + 'tx/' + transaction_data['txid']
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session.add(TransactionHistory(sourceFloAddress=inputAddress, destFloAddress=outputAddress,
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transferAmount=tokenAmount, blockNumber=block_data['height'], time=block_data['time'],
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transactionHash=transaction_data['txid'], blockchainReference=blockchainReference))
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session.commit()
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session.close()
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return 1
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def startWorking(transaction_data, parsed_data):
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# Do the necessary checks for the inputs and outputs
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# todo Rule 38 - Here we are doing FLO processing. We attach asset amounts to a FLO address, so every FLO address
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# will have multiple feed ins of the asset. Each of those feedins will be an input to the address.
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# an address can also spend the asset. Each of those spends is an output of that address feeding the asset into some
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# other address an as input
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# Rule 38 reframe - For checking any asset transfer on the flo blockchain it is possible that some transactions may use more than one
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# vins. However in any single transaction the system considers valid, they can be only one source address from which the flodata is
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# originting. To ensure consistency, we will have to check that even if there are more than one vins in a transaction, there should be
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# excatly one FLO address on the originating side and that FLO address should be the owner of the asset tokens being transferred
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# Create vinlist and outputlist
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vinlist = []
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querylist = []
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# todo Rule 39 - Create a list of vins for a given transaction id
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for obj in transaction_data["vin"]:
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querylist.append([obj["txid"], obj["vout"]])
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totalinputval = 0
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inputadd = ''
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# todo Rule 40 - For each vin, find the feeding address and the fed value. Make an inputlist containing [inputaddress, n value]
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for query in querylist:
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string = "{} getrawtransaction {} 1".format(localapi, str(query[0]))
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response = subprocess.check_output(string, shell=True)
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content = json.loads(response.decode("utf-8"))
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for objec in content["vout"]:
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if objec["n"] == query[1]:
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inputadd = objec["scriptPubKey"]["addresses"][0]
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totalinputval = totalinputval + objec["value"]
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vinlist.append([inputadd, objec["value"]])
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# todo Rule 41 - Check if all the addresses in a transaction on the input side are the same
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for idx, item in enumerate(vinlist):
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if idx == 0:
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temp = item[0]
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continue
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if item[0] != temp:
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print('System has found more than one address as part of vin')
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return
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inputlist = [vinlist[0][0], totalinputval]
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# todo Rule 42 - If the number of vout is more than 2, reject the transaction
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if len(transaction_data["vout"]) > 2:
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print("Program has detected more than 2 vouts ")
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print("This transaction will be discarded")
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return
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# todo Rule 43 - A transaction accepted by the system has two vouts, 1. The FLO address of the receiver
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# 2. Flo address of the sender as change address. If the vout address is change address, then the other adddress
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# is the recevier address
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outputlist = []
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for obj in transaction_data["vout"]:
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if obj["scriptPubKey"]["type"] == "pubkeyhash":
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if inputlist[0] == obj["scriptPubKey"]["addresses"][0]:
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continue
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outputlist.append([obj["scriptPubKey"]["addresses"][0], obj["value"]])
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if len(outputlist) != 1:
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print("The transaction change is not coming back to the input address")
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return
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outputlist = outputlist[0]
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print("\n\nInput Address")
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print(inputlist)
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print("\nOutput Address")
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print(outputlist)
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# All FLO checks completed at this point.
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# Semantic rules for parsed data begins
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# todo Rule 44 - Process as per the type of transaction
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if parsed_data['type'] == 'transfer':
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print('Found a transaction of the type transfer')
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# todo Rule 45 - If the transfer type is token, then call the function transferToken to adjust the balances
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if parsed_data['transferType'] == 'token':
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returnval = transferToken(parsed_data['tokenIdentification'], parsed_data['tokenAmount'], inputlist[0], outputlist[0])
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if returnval is None:
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print("Something went wrong in the token transfer method")
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# todo Rule 46 - If the transfer type is smart contract, then call the function transferToken to do sanity checks & lock the balance
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elif parsed_data['transferType'] == 'smartContract':
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# Check if the contract has expired
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if parsed_data['expiryTime'] and time.time()>parsed_data['expiryTime']:
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print('Contract has expired and will not accept any user participation')
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return
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# Check if the tokenAmount being transferred exists in the address & do the token transfer
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returnval = transferToken(parsed_data['tokenIdentification'], parsed_data['tokenAmount'], inputlist[0], outputlist[0])
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if returnval is not None:
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# Store participant details in the smart contract's db
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engine = create_engine('sqlite:///smartContracts/{}.db'.format(parsed_data['contractName']), echo=True)
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Base.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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session.add(ContractParticipants(participantAddress=inputadd, tokenAmount=parsed_data['tokenAmount'], userPreference=parsed_data['userPreference']))
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session.commit()
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session.close()
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else:
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print("Something went wrong in the smartcontract token transfer method")
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# todo Rule 47 - If the parsed data type is token incorporation, then check if the name hasn't been taken already
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# if it has been taken then reject the incorporation. Else incorporate it
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elif parsed_data['type'] == 'tokenIncorporation':
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if not os.path.isfile('./tokens/{}.db'.format(parsed_data['tokenIdentification'])):
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engine = create_engine('sqlite:///tokens/{}.db'.format(parsed_data['tokenIdentification']), echo=True)
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Base.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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session.add(ActiveTable(address=inputlist[0], parentid=0, transferBalance=parsed_data['tokenAmount']))
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string = "{} getblock {}".format(localapi, transaction_data['blockhash'])
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response = subprocess.check_output(string, shell=True)
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block_data = json.loads(response.decode("utf-8"))
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session.add(TransferLogs(sourceFloAddress=inputadd, destFloAddress=outputlist[0], transferAmount=parsed_data['tokenAmount'], sourceId=0, destinationId=1, blockNumber=block_data['height'], time=block_data['time'], transactionHash=transaction_data['txid']))
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blockchainReference = neturl + 'tx/' + transaction_data['txid']
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session.add(TransactionHistory(sourceFloAddress=inputadd, destFloAddress='-',
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transferAmount=parsed_data['tokenAmount'], blockNumber=block_data['height'],
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time=block_data['time'],
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transactionHash=transaction_data['txid'],
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blockchainReference=blockchainReference))
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session.commit()
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session.close()
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else:
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print('Transaction rejected as the token with same name has already been incorporated')
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# todo Rule 48 - If the parsed data type if smart contract incorporation, then check if the name hasn't been taken already
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# if it has been taken then reject the incorporation.
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elif parsed_data['type'] == 'smartContractIncorporation':
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if not os.path.isfile('./smartContracts/{}.db'.format(parsed_data['contractName'])):
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# todo Rule 49 - If the contract name hasn't been taken before, check if the contract type is an authorized type by the system
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if parsed_data['contractType'] == 'betting':
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print("Smart contract is of the type betting")
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# todo Rule 50 - Contract address mentioned in flodata field should be same as the receiver FLO address on the output side
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# henceforth we will not consider any flo private key initiated comment as valid from this address
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# Unlocking can only be done through smart contract system address
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if parsed_data['contractAddress'] == outputlist[0]:
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print("Hey I have passed the first test for smart contract")
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engine = create_engine('sqlite:///smartContracts/{}.db'.format(parsed_data['contractName']), echo=True)
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ContractBase.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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session.add(ContractStructure(attribute='contractType', index=0, value=parsed_data['contractType']))
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session.add(ContractStructure(attribute='contractName', index=0, value=parsed_data['contractName']))
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session.add(
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ContractStructure(attribute='tokenIdentification', index=0, value=parsed_data['tokenIdentification']))
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session.add(
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ContractStructure(attribute='contractAddress', index=0, value=parsed_data['contractAddress']))
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session.add(
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ContractStructure(attribute='flodata', index=0,
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value=parsed_data['flodata']))
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session.add(
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ContractStructure(attribute='userassetcommitment', index=0,
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value=parsed_data['contractConditions']['userassetcommitment'].split(parsed_data['tokenIdentification'][:-1])[0]))
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for key, value in parsed_data['contractConditions']['smartcontractpays'].items():
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session.add(ContractStructure(attribute='exitconditions', index=key, value=value))
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session.commit()
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session.close()
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# Store smart contract address in system's db, to be ignored during future transfers
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engine = create_engine('sqlite:///system.db',
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echo=True)
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SystemBase.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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session.add(
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ActiveContracts(contractName=parsed_data['contractName'], contractAddress=parsed_data['contractAddress']))
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session.commit()
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session.close()
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else:
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print('Transaction rejected as a smartcontract with same name has already been incorporated')
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elif parsed_data['type'] == 'smartContractPays':
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print('Found a transaction of the type smartContractPays')
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# Check if input address is a committee address
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if inputlist[0] in committeeAddressList:
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# Check if the output address is an active Smart contract address
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engine = create_engine('sqlite:///system.db', echo=True)
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connection = engine.connect()
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activeContracts = connection.execute('select * from activecontracts').fetchall()
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connection.close()
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# Change columns into rows - https://stackoverflow.com/questions/44360162/how-to-access-a-column-in-a-list-of-lists-in-python
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activeContracts = list(zip(*activeContracts))
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if outputlist[0] in activeContracts[2] and parsed_data['contractName'] in activeContracts[1]:
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engine = create_engine('sqlite:///smartContracts/{}.db'.format(parsed_data['contractName']), echo=True)
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connection = engine.connect()
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contractWinners = connection.execute('select * from contractparticipants where userPreference="{}"'.format(parsed_data['triggerCondition'])).fetchall()
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tokenSum = connection.execute('select sum(tokenAmount) from contractparticipants').fetchall()[0][0]
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tokenIdentification = connection.execute('select value from contractstructure where attribute="tokenIdentification"').fetchall()[0][0]
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connection.close()
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contractWinners = list(zip(*contractWinners))
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for address in contractWinners[1]:
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transferToken(tokenIdentification, tokenSum/len(contractWinners[1]), outputlist[0], address)
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else:
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print('This trigger doesn\'t apply to an active contract. It will be discarded')
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else:
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print('Input address is not part of the committee address list. This trigger is rejected')
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# todo Rule 1 - Read command line arguments to reset the databases as blank
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# Rule 2 - Read config to set testnet/mainnet
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# Rule 3 - Set flo blockexplorer location depending on testnet or mainnet
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# Rule 4 - Set the local flo-cli path depending on testnet or mainnet
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# Rule 5 - Set the block number to scan from
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# Read command line arguments
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parser = argparse.ArgumentParser(description='Script tracks RMT using FLO data on the FLO blockchain - https://flo.cash')
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parser.add_argument('-r', '--reset', nargs='?', const=1, type=int, help='Purge existing db and rebuild it')
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args = parser.parse_args()
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apppath = os.path.dirname(os.path.realpath(__file__))
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dirpath = os.path.join(apppath, 'tokens')
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if not os.path.isdir(dirpath):
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os.mkdir(dirpath)
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dirpath = os.path.join(apppath, 'smartContracts')
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if not os.path.isdir(dirpath):
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os.mkdir(dirpath)
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# Read configuration
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config = configparser.ConfigParser()
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config.read('config.ini')
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# Assignment the flo-cli command
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if config['DEFAULT']['NET'] == 'mainnet':
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neturl = 'https://flosight.duckdns.org/'
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localapi = config['DEFAULT']['FLO_CLI_PATH']
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elif config['DEFAULT']['NET'] == 'testnet':
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neturl = 'https://testnet-flosight.duckdns.org/'
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localapi = '{} --testnet'.format(config['DEFAULT']['FLO_CLI_PATH'])
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else:
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print("NET parameter is wrong\nThe script will exit now ")
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# Delete database and smartcontract directory if reset is set to 1
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if args.reset == 1:
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apppath = os.path.dirname(os.path.realpath(__file__))
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dirpath = os.path.join(apppath, 'tokens')
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shutil.rmtree(dirpath)
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os.mkdir(dirpath)
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dirpath = os.path.join(apppath, 'smartContracts')
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shutil.rmtree(dirpath)
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os.mkdir(dirpath)
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dirpath = os.path.join(apppath, 'system.db')
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if os.path.exists(dirpath):
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os.remove(dirpath)
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# Read start block no
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startblock = int(config['DEFAULT']['START_BLOCK'])
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engine = create_engine('sqlite:///system.db', echo=True)
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SystemBase.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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session.add( SystemData(attribute='lastblockscanned', value=startblock-1))
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session.commit()
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session.close()
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# Read start block no
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engine = create_engine('sqlite:///system.db', echo=True)
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SystemBase.metadata.create_all(bind=engine)
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session = sessionmaker(bind=engine)()
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startblock = int(session.query(SystemData).filter_by(attribute='lastblockscanned').all()[0].value)
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session.commit()
|
|
session.close()
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|
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# todo Rule 6 - Find current block height
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|
# Rule 7 - Start analysing the block contents from starting block to current height
|
|
|
|
# Find current block height
|
|
string = "{} getblockcount".format(localapi)
|
|
response = subprocess.check_output(string, shell=True)
|
|
current_index = json.loads(response.decode("utf-8"))
|
|
print("current_block_height : " + str(current_index))
|
|
|
|
|
|
for blockindex in range( startblock, current_index ):
|
|
print(blockindex)
|
|
|
|
if blockindex == 3387978:
|
|
print('hello')
|
|
|
|
# Scan every block
|
|
string = "{} getblockhash {}".format(localapi, str(blockindex))
|
|
response = subprocess.check_output(string, shell=True)
|
|
blockhash = response.decode("utf-8")
|
|
|
|
string = "{} getblock {}".format(localapi, str(blockhash))
|
|
response = subprocess.check_output(string, shell=True)
|
|
blockinfo = json.loads(response.decode("utf-8"))
|
|
|
|
# todo Rule 8 - read every transaction from every block to find and parse flodata
|
|
|
|
# Scan every transaction
|
|
for transaction in blockinfo["tx"]:
|
|
string = "{} getrawtransaction {} 1".format(localapi, str(transaction))
|
|
response = subprocess.check_output(string, shell=True)
|
|
transaction_data = json.loads(response.decode("utf-8"))
|
|
text = transaction_data["floData"]
|
|
|
|
# todo Rule 9 - Reject all noise transactions. Further rules are in parsing.py
|
|
|
|
parsed_data = parsing.parse_flodata(text)
|
|
if parsed_data['type'] != 'noise':
|
|
print(blockindex)
|
|
print(parsed_data['type'])
|
|
startWorking(transaction_data, parsed_data)
|
|
|
|
engine = create_engine('sqlite:///system.db')
|
|
SystemBase.metadata.create_all(bind=engine)
|
|
session = sessionmaker(bind=engine)()
|
|
entry = session.query(SystemData).filter(SystemData.attribute == 'lastblockscanned').all()[0]
|
|
entry.value = str(blockindex)
|
|
session.commit()
|
|
session.close()
|
|
|