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()))
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()))
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)
