harvest.py

#!/usr/bin/python
'''
attempt to send myself the Bitcoin from `unusual` scripts

my project jcomeauictx/blockparse/python/script.py has a search
for `unusual` scripts in it, and it found a bunch of
['IFDUP', 'IF', '2SWAP', 'VERIFY', '2OVER', 'DEPTH'] scripts... which,
when compiled, spell exactly the word 'script'.

this shouldn't even run, because an unterminated `IF` should fail. but
it's worth a shot.
'''
from __future__ import print_function, division
import sys, os, re, logging
from bitcoin import *
from binascii import b2a_hex
from ast import literal_eval
logging.basicConfig(level=logging.DEBUG if __debug__ else logging.INFO)

MY_ADDR = '16eEr7P3wtozVB96D4CXXdf9hhWTCJXYGM'  # Coinomi wallet
SATOSHIS_PER_BYTE = 240  # currently recommended by bitcoinfees.earn.com
SCRIPT = b2a_hex('QQQQQ')  # ['TRUE'] * 5, should avoid stack underflows

def harvest(really_send=False):
    '''
    harvest the idle funds. it's not theft because the sender[s] didn't
    code a correct script to send them to anybody.
    '''
    with open('/tmp/unusual.log') as infile:
        logs = infile.readlines()
    outputs = [literal_eval(line)['unusual'] for line in logs]
    for output in list(outputs):
        if output['script'][:1] == ['IFDUP']:
            output['script'] = SCRIPT
            output.pop('height')
        else:
            outputs.remove(output)
    assert len(outputs) == 182
    logging.debug(outputs)
    total = sum([output['value'] for output in outputs])
    logging.debug('number of inputs: %d', len(outputs))
    value = total - 1000000  # .01BTC for miners, first draft
    to_me = [{'value': value, 'address': MY_ADDR}]
    transaction = mktx(outputs, to_me)
    bytecount = len(transaction) // 2
    fee = SATOSHIS_PER_BYTE * bytecount
    value = total - fee
    logging.info('updated fee for %d bytes: %.8f, to me: %.8f',
                 bytecount,
                 fee / 100000000,
                 value / 100000000)
    to_me = [{'value': value, 'address': MY_ADDR}]  # rebuild output
    transaction = mktx(outputs, to_me)
    if really_send:
        pushtx(transaction)
    return transaction

if __name__ == '__main__':
    print(harvest(bool(sys.argv[1:])))