Exemplo n.º 1
0
def sign(utxo, priv, destaddrs):
    """Sign a tx sending the amount amt, from utxo utxo,
    equally to each of addresses in list destaddrs,
    after fees; the purpose is to create a large
    number of utxos.
    """
    results = validate_utxo_data([(utxo, priv)], retrieve=True)
    if not results:
        return False
    assert results[0][0] == utxo
    amt = results[0][1]
    ins = [utxo]
    estfee = estimate_tx_fee(1, len(destaddrs))
    outs = []
    share = int((amt - estfee) / len(destaddrs))
    fee = amt - share * len(destaddrs)
    assert fee >= estfee
    log.info("Using fee: " + str(fee))
    for i, addr in enumerate(destaddrs):
        outs.append({'address': addr, 'value': share})
    unsigned_tx = btc.mktx(ins, outs)
    return btc.sign(unsigned_tx, 0,
                    btc.from_wif_privkey(priv, vbyte=get_p2pk_vbyte()))
Exemplo n.º 2
0
def sign(utxo, priv, destaddrs):
    """Sign a tx sending the amount amt, from utxo utxo,
    equally to each of addresses in list destaddrs,
    after fees; the purpose is to create a large
    number of utxos.
    """
    results = validate_utxo_data([(utxo, priv)], retrieve=True)
    if not results:
        return False
    assert results[0][0] == utxo
    amt = results[0][1]
    ins = [utxo]
    estfee = estimate_tx_fee(1, len(destaddrs))
    outs = []
    share = int((amt - estfee) / len(destaddrs))
    fee = amt - share*len(destaddrs)
    assert fee >= estfee
    log.debug("Using fee: " + str(fee))
    for i, addr in enumerate(destaddrs):
        outs.append({'address': addr, 'value': share})
    unsigned_tx = btc.mktx(ins, outs)
    return btc.sign(unsigned_tx, 0, btc.from_wif_privkey(
        priv, vbyte=get_p2pk_vbyte()))
Exemplo n.º 3
0
def main():
    parser = OptionParser(
        usage=
        'usage: %prog [options] [txid:n]',
        description="Adds one or more utxos to the list that can be used to make "
                    "commitments for anti-snooping. Note that this utxo, and its "
                    "PUBkey, will be revealed to makers, so consider the privacy "
                    "implication. "
                    
                    "It may be useful to those who are having trouble making "
                    "coinjoins due to several unsuccessful attempts (especially "
                    "if your joinmarket wallet is new). "
                    
                    "'Utxo' means unspent transaction output, it must not "
                    "already be spent. "
                    "The options -w, -r and -R offer ways to load these utxos "
                    "from a file or wallet. "
                    "If you enter a single utxo without these options, you will be "
                    "prompted to enter the private key here - it must be in "
                    "WIF compressed format. "

                    "BE CAREFUL about handling private keys! "
                    "Don't do this in insecure environments. "
                    
                    "Also note this ONLY works for standard (p2pkh) utxos."
    )
    parser.add_option(
        '-r',
        '--read-from-file',
        action='store',
        type='str',
        dest='in_file',
        help='name of plain text csv file containing utxos, one per line, format: '
        'txid:N, WIF-compressed-privkey'
    )
    parser.add_option(
        '-R',
        '--read-from-json',
        action='store',
        type='str',
        dest='in_json',
        help='name of json formatted file containing utxos with private keys, as '
        'output from "python wallet-tool.py -u -p walletname showutxos"'
        )
    parser.add_option(
        '-w',
        '--load-wallet',
        action='store',
        type='str',
        dest='loadwallet',
        help='name of wallet from which to load utxos and use as commitments.'
        )
    parser.add_option(
        '-g',
        '--gap-limit',
        action='store',
        type='int',
        dest='gaplimit',
        default = 6,
        help='Only to be used with -w; gap limit for Joinmarket wallet, default 6.'
    )
    parser.add_option(
        '-M',
        '--max-mixdepth',
        action='store',
        type='int',
        dest='maxmixdepth',
        default=5,
        help='Only to be used with -w; number of mixdepths for wallet, default 5.'
    )
    parser.add_option(
        '-d',
        '--delete-external',
        action='store_true',
        dest='delete_ext',
        help='deletes the current list of external commitment utxos',
        default=False
        )
    parser.add_option(
        '-v',
        '--validate-utxos',
        action='store_true',
        dest='validate',
        help='validate the utxos and pubkeys provided against the blockchain',
        default=False
    )
    parser.add_option(
        '-o',
        '--validate-only',
        action='store_true',
        dest='vonly',
        help='only validate the provided utxos (file or command line), not add',
        default=False
    )
    (options, args) = parser.parse_args()
    load_program_config()
    utxo_data = []
    if options.delete_ext:
        other = options.in_file or options.in_json or options.loadwallet
        if len(args) > 0 or other:
            if raw_input("You have chosen to delete commitments, other arguments "
                         "will be ignored; continue? (y/n)") != 'y':
                print "Quitting"
                sys.exit(0)
        c, e = btc.get_podle_commitments()
        print pformat(e)
        if raw_input(
            "You will remove the above commitments; are you sure? (y/n): ") != 'y':
            print "Quitting"
            sys.exit(0)
        btc.update_commitments(external_to_remove=e)
        print "Commitments deleted."
        sys.exit(0)

    #Three options (-w, -r, -R) for loading utxo and privkey pairs from a wallet,
    #csv file or json file.
    if options.loadwallet:
        os.chdir('..') #yuck (see earlier comment about package)
        wallet = Wallet(options.loadwallet,
                            options.maxmixdepth,
                            options.gaplimit)
        os.chdir(os.path.join(os.getcwd(), 'cmttools'))
        jm_single().bc_interface.sync_wallet(wallet)
        unsp = {}
        for u, av in wallet.unspent.iteritems():
                    addr = av['address']
                    key = wallet.get_key_from_addr(addr)
                    wifkey = btc.wif_compressed_privkey(key, vbyte=get_p2pk_vbyte())
                    unsp[u] = {'address': av['address'],
                               'value': av['value'], 'privkey': wifkey}
        for u, pva  in unsp.iteritems():
            utxo_data.append((u, pva['privkey']))
    elif options.in_file:
        with open(options.in_file, "rb") as f:
            utxo_info = f.readlines()
        for ul in utxo_info:
            ul = ul.rstrip()
            if ul:
                u, priv = get_utxo_info(ul)
                if not u:
                    quit(parser, "Failed to parse utxo info: " + str(ul))
                utxo_data.append((u, priv))
    elif options.in_json:
        if not os.path.isfile(options.in_json):
            print "File: " + options.in_json + " not found."
            sys.exit(0)
        with open(options.in_json, "rb") as f:
            try:
                utxo_json = json.loads(f.read())
            except:
                print "Failed to read json from " + options.in_json
                sys.exit(0)
        for u, pva in utxo_json.iteritems():
            utxo_data.append((u, pva['privkey']))
    elif len(args) == 1:
        u = args[0]
        priv = raw_input(
            'input private key for ' + u + ', in WIF compressed format : ')
        u, priv = get_utxo_info(','.join([u, priv]))
        if not u:
            quit(parser, "Failed to parse utxo info: " + u)
        utxo_data.append((u, priv))
    else:
        quit(parser, 'Invalid syntax')
    if options.validate or options.vonly:
        if not validate_utxo_data(utxo_data):
            quit(parser, "Utxos did not validate, quitting")
    if options.vonly:
        sys.exit(0)
    
    #We are adding utxos to the external list
    assert len(utxo_data)
    add_external_commitments(utxo_data)