def make_bare_tx(candidate, change_address, rs_asm, version=1):
# <Tx> components
spendables = []
ins = []
outs = []
# estimate the final (signed) bytesize per input based on the redeemscript
redeem_script = tools.compile(rs_asm)
in_size = estimate_input_size(redeem_script)
# initialize size and amount counters
in_amount = Decimal(0)
est_size = TX_COMPONENTS.version + TX_COMPONENTS.out_count + TX_COMPONENTS.in_count
# add output size
est_size += OUTSIZE * 2
# iterate over unspents
for utxo in candidate.utxos:
value = Decimal(utxo.amount) * COIN
in_amount += value
script = h2b(utxo.script)
# for now: test if the in_script we figured we would need, actually matches the in script :D
# reverse that tx hash
prevtx = h2b_rev(utxo.hash)
# output index
outnum = utxo.outpoint
# create "spendable"
spdbl = Spendable(value, script, prevtx, outnum)
spendables.append(spdbl)
# also create this as input
as_input = spdbl.tx_in()
as_input.sigs = []
ins.append(as_input)
# add the estimated size per input
est_size += in_size
# calc fee and out amount
fee = (Decimal(math.ceil(est_size / 1000)) * COIN *
NETWORK_FEE) + FEE_MARGIN
change_amount = Decimal(
math.floor(in_amount - (candidate.amount * COIN) - fee))
# create outputs
outs.append(
TxOut(int(candidate.amount * COIN), make_payto(candidate.address)))
outs.append(TxOut(int(change_amount), make_payto_script(change_address)))
# create bare tx without sigs
tx = Tx(version, ins, outs, 0, spendables)
return tx
def decode_spendables(address, results):
spendables = [
Spendable(r['value'], ScriptPayToAddress(address),
h2b_rev(r['tx_hash']), r['tx_pos'])
for r in results['result']
]
return spendables
def test_create_trx(self):
tx_input = Spendable(200, '18eKkAWyU9kvRNHPKxnZb6wwtPMrNmRRRA',
h2b('8443b07464c762d7fb404ea918a5ac9b3618d5cd6a0c5ea6e4dd5d7bbe28b154'), 0)
tx_outs = [tx_utils.create_transaction_output('mgAqW5ZCnEp7fjvpj8RUL3WxsBy8rcDcCi', 0.0000275)]
tx = tx_utils.create_trx('TEST'.encode('utf-8'), 3, 'mgAqW5ZCnEp7fjvpj8RUL3WxsBy8rcDcCi', tx_outs, tx_input)
hextx = hexlify(tx.serialize())
self.assertEquals(hextx,
'01000000018443b07464c762d7fb404ea918a5ac9b3618d5cd6a0c5ea6e4dd5d7bbe28b1540000000000ffffffff0300000000000000001976a914072a22e5913cd939904c46bbd0bc56755543384b88acc5000000000000001976a914072a22e5913cd939904c46bbd0bc56755543384b88ac0000000000000000066a045445535400000000')
def spendable_for_row(r):
return Spendable(coin_value=r[2],
script=h2b(r[3]),
tx_hash=h2b_rev(r[0]),
tx_out_index=r[1],
block_index_available=r[4],
does_seem_spent=r[5],
block_index_spent=r[6])
def spendables_for_addresses(self, addresses):
results = {}
for address in addresses:
if address == "mgMy4vmqChGT8XeKPb1zD6RURWsiNmoNvR":
results[address] =\
[Spendable(coin_value=10000,
script=ScriptPayToAddress(bitcoin_address_to_hash160_sec(address, address_prefix_for_netcode('XTN'))).script(),
tx_out_index=0, tx_hash=b'2'*32)]
return results
def op_return_this(privatekey, text, prefix = "KEYSTAMP:", bitcoin_fee = 10000):
bitcoin_keyobj = get_key(privatekey)
bitcoin_address = bitcoin_keyobj.bitcoin_address()
## Get the spendable outputs we are going to use to pay the fee
all_spendables = get_spendables_blockcypher(bitcoin_address)
spendables = []
value = 0
for unspent in all_spendables:
while value < bitcoin_fee + 10000:
coin_value = unspent.get("value")
script = h2b(unspent.get("script_hex"))
previous_hash = h2b_rev(unspent.get("tx_hash"))
previous_index = unspent.get("index")
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
value += coin_value
bitcoin_sum = sum(spendable.coin_value for spendable in spendables)
if(bitcoin_sum < bitcoin_fee):
print "ERROR: not enough balance: available: %s - fee: %s" %(bitcoin_sum, bitcoin_fee)
return False
## Create the inputs we are going to use
inputs = [spendable.tx_in() for spendable in spendables]
## If we will have change left over create an output to send it back
outputs = []
if (bitcoin_sum > bitcoin_fee):
change_output_script = standard_tx_out_script(bitcoin_address)
total_amout = bitcoin_sum - bitcoin_fee
outputs.append(TxOut(total_amout, change_output_script))
# home_address = standard_tx_out_script(bitcoin_address)
# #TODO: it needs some love and IQ on input mananagement stuff
# outputs.append(TxOut((bitcoin_sum - bitcoin_fee), home_address))
## Build the OP_RETURN output with our message
if prefix is not None and (len(text) + len(prefix) <= 80):
text = prefix + text
message = hexlify(text.encode()).decode('utf8')
op_return_output_script = tools.compile("OP_RETURN %s" % message)
outputs.append(TxOut(0, op_return_output_script))
## Create the transaction and sign it with the private key
tx = Tx(version=1, txs_in=inputs, txs_out=outputs)
# print tx.as_hex()
# print spendables
tx.set_unspents(spendables)
sign_tx(tx, wifs=[privatekey])
print "singed_tx: %s" %tx.as_hex()
#TODO: uncomment this when its ready to push data to blockchian
tx_hash = broadcast_tx_blockr(tx.as_hex())
return tx_hash
def test_verify_transaction(self):
tx_input = Spendable(200, '18eKkAWyU9kvRNHPKxnZb6wwtPMrNmRRRA',
h2b('8443b07464c762d7fb404ea918a5ac9b3618d5cd6a0c5ea6e4dd5d7bbe28b154'), 0)
tx_outs = [tx_utils.create_transaction_output('mgAqW5ZCnEp7fjvpj8RUL3WxsBy8rcDcCi', 0.0000275)]
op_return_val = h2b('e9cee71ab932fde863338d08be4de9dfe39ea049bdafb342ce659ec5450b69ae')
tx = tx_utils.create_trx(op_return_val, 3, 'mgAqW5ZCnEp7fjvpj8RUL3WxsBy8rcDcCi', tx_outs, tx_input)
hextx = hexlify(tx.serialize())
tx_utils.verify_transaction(hextx, hexlify(op_return_val))
def spendables_for_address(self, bitcoin_address):
URL = "%s/api/addr/%s/utxo" % (self.base_url, bitcoin_address)
r = json.loads(urlopen(URL).read().decode("utf8"))
spendables = []
for u in r:
value = btc_to_satoshi(str(u.get("amount")))
script = h2b(u.get("scriptPubKey"))
prev_hash = h2b_rev(u.get("txid"))
prev_index = u.get("vout")
spendable = Spendable(value, script, prev_hash, prev_index)
spendables.append(spendable)
return spendables
def spendables_for_address(self, address):
if address == "1r1msgrPfqCMRAhg23cPBD9ZXH1UQ6jec":
return [
Spendable(
coin_value=10000,
script=ScriptPayToAddress(
bitcoin_address_to_hash160_sec(address)).script(),
tx_out_index=0,
tx_hash=b'2' * 32)
]
else:
return []
def spendables_for_address(self, address):
if address == "32pQeKJ8KzRfb3ox9Me8EHn3ud8xo6mqAu":
if address != payto_script.address():
raise ValueError()
return [
Spendable(coin_value=10000,
script=payto_script.script(),
tx_out_index=0,
tx_hash=b'2' * 32)
]
else:
return []
def spendables_for_address(self, bitcoin_address):
url = "{0}/addr/{1}/utxo".format(self.base_url, bitcoin_address)
result = json.loads(urlopen(url).read().decode("utf8"))
spendables = []
for utxo in result:
value = btc_to_satoshi(str(utxo["amount"]))
prev_index = utxo["vout"]
prev_hash = h2b_rev(utxo["txid"])
script = h2b(utxo["scriptPubKey"])
spendable = Spendable(value, script, prev_hash, prev_index)
spendables.append(spendable)
return spendables
def spendable_for_hash_index(self, tx_hash, tx_out_index):
tx_hash_hex = b2h_rev(tx_hash)
SQL = ("select coin_value, script, block_index_available, "
"does_seem_spent, block_index_spent from Spendable where "
"tx_hash = ? and tx_out_index = ?")
c = self._exec_sql(SQL, tx_hash_hex, tx_out_index)
r = c.fetchone()
if r is None:
return r
return Spendable(coin_value=r[0], script=h2b(r[1]), tx_hash=tx_hash,
tx_out_index=tx_out_index, block_index_available=r[2],
does_seem_spent=r[3], block_index_spent=r[4])
def spendables_for_address(self, address):
if address == "mgMy4vmqChGT8XeKPb1zD6RURWsiNmoNvR":
script = ScriptPayToAddress(
bitcoin_address_to_hash160_sec(
address, address_prefix_for_netcode('XTN')))
return [
Spendable(coin_value=10000,
script=script.script(),
tx_out_index=0,
tx_hash=b'2' * 32)
]
else:
return []
def spendables_for_address(self, bitcoin_address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
URL = "%s/api/addr/%s/utxo" % (self.base_url, bitcoin_address)
r = json.loads(urlopen(URL).read().decode("utf8"))
spendables = []
for u in r:
coin_value = btc_to_satoshi(u.get("amount"))
script = h2b(u.get("scriptPubKey"))
previous_hash = h2b_rev(u.get("txid"))
previous_index = u.get("vout")
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(self, bitcoin_address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
URL = "https://blockchain.info/unspent?active=%s" % bitcoin_address
r = json.loads(urlopen(URL).read().decode("utf8"))
spendables = []
for u in r["unspent_outputs"]:
coin_value = u["value"]
script = h2b(u["script"])
previous_hash = h2b(u["tx_hash"])
previous_index = u["tx_output_n"]
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(self, address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
spendables = []
url_append = "?unspentOnly=true&token=%s&includeScript=true" % self.api_key
url = self.base_url("addrs/%s%s" % (address, url_append))
result = json.loads(urlopen(url).read().decode("utf8"))
for txn in result.get("txrefs", []):
coin_value = txn.get("value")
script = h2b(txn.get("script"))
previous_hash = h2b_rev(txn.get("tx_hash"))
previous_index = txn.get("tx_output_n")
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(bitcoin_address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
URL = "http://btc.blockr.io/api/v1/address/unspent/%s" % bitcoin_address
r = json.loads(urlopen(URL).read().decode("utf8"))
spendables = []
for u in r.get("data", {}).get("unspent", []):
coin_value = btc_to_satoshi(u.get("amount"))
script = binascii.unhexlify(u.get("script"))
previous_hash = h2b_rev(u.get("tx"))
previous_index = u.get("n")
spendables.append(
Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(self, address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
url_append = "unspent/%s" % address
URL = self.base_url("/address/%s" % url_append)
r = json.loads(urlopen(URL).read().decode("utf8"))
spendables = []
for u in r.get("data", {}).get("unspent", []):
coin_value = btc_to_satoshi(u.get("amount"))
script = h2b(u.get("script"))
previous_hash = h2b_rev(u.get("tx"))
previous_index = u.get("n")
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(bitcoin_address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
json_response = fetch_json("addresses/%s/unspent-outputs" %
bitcoin_address)
spendables = []
for tx_out_info in json_response.get("data", {}).get("outputs"):
if tx_out_info.get("to_address") == bitcoin_address:
coin_value = tx_out_info["value"]
script = tools.compile(tx_out_info.get("script_pub_key"))
previous_hash = h2b_rev(tx_out_info.get("transaction_hash"))
previous_index = tx_out_info.get("transaction_index")
spendables.append(
Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(self, address):
"""
Converts to pycoin Spendable type
:param address:
:return: list of Spendables
"""
unspent_outputs = bitcoin.rpc.Proxy().listunspent(addrs=[address])
spendables = []
for unspent in unspent_outputs:
coin_value = unspent.get('amount', 0)
outpoint = unspent.get('outpoint')
script = unspent.get('scriptPubKey')
previous_hash = outpoint.hash
previous_index = outpoint.n
spendables.append(
Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(
_from, unused_utxo
): # Generate spendables without connecting to the Bitcoin network
spendables = []
_script_p2pkh = PAYMENT_OBJ[_from][1]
coin_value = unused_utxo.satoshis
script = binascii.unhexlify(_script_p2pkh)
previous_hash_big_endian = binascii.unhexlify(unused_utxo.txid)
previous_hash_little_endian = previous_hash_big_endian[::-1]
previous_index = unused_utxo.vout
return [
Spendable(coin_value, script, previous_hash_little_endian,
previous_index)
]
def unspents_for_addresses(self, address_iter):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
address_list = ",".join(address_iter)
URL = self.base_url() % ("addresses/%s/unspents" % address_list)
r = json.loads(urlopen(URL).read().decode("utf8"))
spendables = []
for u in r:
coin_value = u["value"]
script = h2b(u["script_hex"])
previous_hash = h2b(u["transaction_hash"])
previous_index = u["output_index"]
spendables.append(
Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(self, address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
spendables = []
r = json.loads(
urlopen(self.base_url('get_tx_unspent',
address)).read().decode("utf8"))
for u in r['data']['txs']:
coin_value = int(float(u['value']) * 100000000)
script = h2b(u["script_hex"])
previous_hash = h2b_rev(u["txid"])
previous_index = u["output_no"]
spendables.append(
Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_addresses(self, bitcoin_addresses):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
r = []
for i in xrange(0, len(bitcoin_addresses), CHUNK_SIZE):
addresses = bitcoin_addresses[i:i + CHUNK_SIZE]
url = "%s/api/addrs/%s/utxo" % (self.base_url, ",".join(addresses))
r.extend(json.loads(urlopen(url).read().decode("utf8")))
spendables = []
for u in r:
coin_value = btc_to_satoshi(str(u.get("amount")))
script = h2b(u.get("scriptPubKey"))
previous_hash = h2b_rev(u.get("txid"))
previous_index = u.get("vout")
spendables.append(
Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def spendables_for_address(bitcoin_address):
"""
Return a list of Spendable objects for the
given bitcoin address.
"""
URL = "https://api.biteasy.com/blockchain/v1/addresses/%s/unspent-outputs" % bitcoin_address
r = Request(URL,
headers={"content-type": "application/json", "accept": "*/*", "User-Agent": "curl/7.29.0"})
d = urlopen(r).read()
json_response = json.loads(d.decode("utf8"))
spendables = []
for tx_out_info in json_response.get("data", {}).get("outputs"):
if tx_out_info.get("to_address") == bitcoin_address:
coin_value = tx_out_info["value"]
script = tools.compile(tx_out_info.get("script_pub_key"))
previous_hash = h2b_rev(tx_out_info.get("transaction_hash"))
previous_index = tx_out_info.get("transaction_index")
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
return spendables
def fake_sources_for_address(self, addr, num_sources, total_satoshi):
"""
Returns a fake list of funding sources for a bitcoin address.
Note: total_satoshi will be split evenly by num_sources
addr - bitcoin address to fund
num_sources - number of sources to fund it with
total_satoshi - total satoshis to fund 'addr' with
Returns a list of Spendable objects
"""
spendables = []
satoshi_left = total_satoshi
satoshi_per_tx = satoshi_left / num_sources
satoshi_per_tx = int(satoshi_per_tx)
# Create the output script for the input to fund
script = standard_tx_out_script(addr)
while satoshi_left > 0:
if satoshi_left < satoshi_per_tx:
satoshi_per_tx = satoshi_left
# Create a random hash value
rand_hash = bytes([random.randint(0, 0xFF) for _ in range(0, 32)])
# Create a random output index
# This field is 32 bits, but typically transactions dont have that many, limit to 0xFF
rand_output_index = random.randint(0, 0xFF)
# Append the new fake source
spend = Spendable(satoshi_per_tx, script, rand_hash,
rand_output_index)
spendables.append(spend)
satoshi_left -= satoshi_per_tx
assert satoshi_left == 0, "incorrect funding"
return spendables
def make_bare_tx(network, from_address, to_address, redeem_script, version=1):
# <Tx> components
spendables = []
ins = []
outs = []
# estimate the final (signed) bytesize per input based on the redeemscript
in_size = estimate_input_size(redeem_script)
# initialize size and amount counters
in_amount = Decimal(0)
est_size = TX_COMPONENTS.version + TX_COMPONENTS.out_count + TX_COMPONENTS.in_count
# add output size (we"ll only have 1)
est_size += TX_COMPONENTS.out_scriptlen + TX_COMPONENTS.out_scriptsize + TX_COMPONENTS.out_scriptlen
unspent_response = sochain_get_unspents(network, from_address)
unspents = unspent_response.get("txs", [])
# iterate over unspents
for tx in unspents:
value = Decimal(tx.get("value")) * Decimal(1e8)
in_amount += value
script = h2b(tx.get("script_hex"))
# for now: test if the in_script we figured we would need, actually matches the in script :D
# reverse that tx hash
txhex = tx.get("txid")
prevtx = h2b_rev(txhex)
# output index
outnum = tx.get("output_no")
# create "spendable"
spdbl = Spendable(value, script, prevtx, outnum)
spendables.append(spdbl)
# also create this as input
as_input = spdbl.tx_in()
as_input.sigs = []
ins.append(as_input)
# add the estimated size per input
est_size += in_size
# calc fee and out amount
fee = Decimal(math.ceil(
est_size / 1000.0)) * Decimal(1e8) * NETWORK_FEES.get(network)
out_amount = in_amount - fee
if (is_p2sh(to_address)):
outscript = make_payto_script(to_address)
else:
outscript = make_payto_address(to_address)
# create output
outs.append(TxOut(out_amount, outscript))
# create bare tx without sigs
tx = Tx(version, ins, outs, 0, spendables)
return tx
def parse_context(args, parser):
# defaults
txs = []
spendables = []
payables = []
key_iters = []
TX_ID_RE = re.compile(r"^[0-9a-fA-F]{64}$")
# there are a few warnings we might optionally print out, but only if
# they are relevant. We don't want to print them out multiple times, so we
# collect them here and print them at the end if they ever kick in.
warning_tx_cache = None
warning_tx_for_tx_hash = None
warning_spendables = None
if args.private_key_file:
wif_re = re.compile(r"[1-9a-km-zA-LMNP-Z]{51,111}")
# address_re = re.compile(r"[1-9a-kmnp-zA-KMNP-Z]{27-31}")
for f in args.private_key_file:
if f.name.endswith(".gpg"):
gpg_args = ["gpg", "-d"]
if args.gpg_argument:
gpg_args.extend(args.gpg_argument.split())
gpg_args.append(f.name)
popen = subprocess.Popen(gpg_args, stdout=subprocess.PIPE)
f = popen.stdout
for line in f.readlines():
# decode
if isinstance(line, bytes):
line = line.decode("utf8")
# look for WIFs
possible_keys = wif_re.findall(line)
def make_key(x):
try:
return Key.from_text(x)
except Exception:
return None
keys = [make_key(x) for x in possible_keys]
for key in keys:
if key:
key_iters.append((k.wif() for k in key.subkeys("")))
# if len(keys) == 1 and key.hierarchical_wallet() is None:
# # we have exactly 1 WIF. Let's look for an address
# potential_addresses = address_re.findall(line)
# update p2sh_lookup
p2sh_lookup = {}
if args.pay_to_script:
for p2s in args.pay_to_script:
try:
script = h2b(p2s)
p2sh_lookup[hash160(script)] = script
except Exception:
print("warning: error parsing pay-to-script value %s" % p2s)
if args.pay_to_script_file:
hex_re = re.compile(r"[0-9a-fA-F]+")
for f in args.pay_to_script_file:
count = 0
for l in f:
try:
m = hex_re.search(l)
if m:
p2s = m.group(0)
script = h2b(p2s)
p2sh_lookup[hash160(script)] = script
count += 1
except Exception:
print("warning: error parsing pay-to-script file %s" %
f.name)
if count == 0:
print("warning: no scripts found in %s" % f.name)
# we create the tx_db lazily
tx_db = None
for arg in args.argument:
# hex transaction id
if TX_ID_RE.match(arg):
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(
args.network)
tx_db = get_tx_db(args.network)
tx = tx_db.get(h2b_rev(arg))
if not tx:
for m in [
warning_tx_cache, warning_tx_for_tx_hash,
warning_spendables
]:
if m:
print("warning: %s" % m, file=sys.stderr)
parser.error("can't find Tx with id %s" % arg)
txs.append(tx)
continue
# hex transaction data
try:
tx = Tx.from_hex(arg)
txs.append(tx)
continue
except Exception:
pass
is_valid = is_address_valid(arg, allowable_netcodes=[args.network])
if is_valid:
payables.append((arg, 0))
continue
try:
key = Key.from_text(arg)
# TODO: check network
if key.wif() is None:
payables.append((key.address(), 0))
continue
# TODO: support paths to subkeys
key_iters.append((k.wif() for k in key.subkeys("")))
continue
except Exception:
pass
if os.path.exists(arg):
try:
with open(arg, "rb") as f:
if f.name.endswith("hex"):
f = io.BytesIO(codecs.getreader("hex_codec")(f).read())
tx = Tx.parse(f)
txs.append(tx)
try:
tx.parse_unspents(f)
except Exception as ex:
pass
continue
except Exception:
pass
parts = arg.split("/")
if len(parts) == 4:
# spendable
try:
spendables.append(Spendable.from_text(arg))
continue
except Exception:
pass
if len(parts) == 2 and is_address_valid(
parts[0], allowable_netcodes=[args.network]):
try:
payables.append(parts)
continue
except ValueError:
pass
parser.error("can't parse %s" % arg)
if args.fetch_spendables:
warning_spendables = message_about_spendables_for_address_env(
args.network)
for address in args.fetch_spendables:
spendables.extend(spendables_for_address(address))
for tx in txs:
if tx.missing_unspents() and args.augment:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(
args.network)
tx_db = get_tx_db(args.network)
tx.unspents_from_db(tx_db, ignore_missing=True)
return (txs, spendables, payables, key_iters, p2sh_lookup, tx_db,
warning_tx_cache, warning_tx_for_tx_hash, warning_spendables)
masked_cc = xor_bytes(alice_cc, sha_secret)
alice_masked_pcode_nosuffix = payment_code_no_suffix(alice_sign, masked_xval, masked_cc)
alice_masked_pcode = pcode_b58( payment_code(alice_sign, masked_xval, masked_cc) )
print "Alice's Masked Payment Code:\n", alice_masked_pcode, '\n'
from pycoin.tx.TxOut import *
from pycoin.tx import Tx, tx_utils, Spendable, pay_to
from pycoin import convention
amount = convention.btc_to_satoshi(first_nondust['amount'])
dustbtc = convention.btc_to_satoshi(DUST)
feebtc = convention.btc_to_satoshi(FEE)
unspent = Spendable( amount, standard_tx_out_script(first_address), \
serialize.h2b_rev(first_nondust['tx']), first_nondust['n'] )
txout = TxOut( dustbtc, standard_tx_out_script(bob_notif.address()) )
change = TxOut( amount - (dustbtc + feebtc), standard_tx_out_script(change_addresses.pop()) )
op_return_script = pay_to.ScriptNulldata(alice_masked_pcode_nosuffix)
op_return_txout = TxOut(0, op_return_script.script())
notif_tx = Tx( 1, [unspent.tx_in()], [txout, change, op_return_txout], unspents=[unspent] )
tx_utils.sign_tx( notif_tx, [first_node.wif()] )
print "Signed Notification TX as hex:\n", notif_tx.as_hex()
data = urlencode(dict( hex=notif_tx.as_hex() ))
response = json.load( urlopen(url="http://tbtc.blockr.io/api/v1/tx/decode", data=data) )
print "Decoded:\n", pretty_json(response), '\n'
def main():
parser = argparse.ArgumentParser(
description="Manipulate bitcoin (or alt coin) transactions.",
epilog=EPILOG)
parser.add_argument('-t', "--transaction-version", type=int,
help='Transaction version, either 1 (default) or 3 (not yet supported).')
parser.add_argument('-l', "--lock-time", type=parse_locktime, help='Lock time; either a block'
'index, or a date/time (example: "2014-01-01T15:00:00"')
parser.add_argument('-n', "--network", default="BTC",
help='Define network code (M=Bitcoin mainnet, T=Bitcoin testnet).')
parser.add_argument('-a', "--augment", action='store_true',
help='augment tx by adding any missing spendable metadata by fetching'
' inputs from cache and/or web services')
parser.add_argument("-i", "--fetch-spendables", metavar="address", action="append",
help='Add all unspent spendables for the given bitcoin address. This information'
' is fetched from web services.')
parser.add_argument('-f', "--private-key-file", metavar="path-to-private-keys", action="append",
help='file containing WIF or BIP0032 private keys. If file name ends with .gpg, '
'"gpg -d" will be invoked automatically. File is read one line at a time, and if '
'the file contains only one WIF per line, it will also be scanned for a bitcoin '
'address, and any addresses found will be assumed to be public keys for the given'
' private key.',
type=argparse.FileType('r'))
parser.add_argument('-g', "--gpg-argument", help='argument to pass to gpg (besides -d).', default='')
parser.add_argument("--remove-tx-in", metavar="tx_in_index_to_delete", action="append", type=int,
help='remove a tx_in')
parser.add_argument("--remove-tx-out", metavar="tx_out_index_to_delete", action="append", type=int,
help='remove a tx_out')
parser.add_argument('-F', "--fee", help='fee, in satoshis, to pay on transaction, or '
'"standard" to auto-calculate. This is only useful if the "split pool" '
'is used; otherwise, the fee is automatically set to the unclaimed funds.',
default="standard", metavar="transaction-fee", type=parse_fee)
parser.add_argument('-C', "--cache", help='force the resultant transaction into the transaction cache.'
' Mostly for testing.', action='store_true'),
parser.add_argument('-u', "--show-unspents", action='store_true',
help='show TxOut items for this transaction in Spendable form.')
parser.add_argument('-b', "--bitcoind-url",
help='URL to bitcoind instance to validate against (http://user:pass@host:port).')
parser.add_argument('-o', "--output-file", metavar="path-to-output-file", type=argparse.FileType('wb'),
help='file to write transaction to. This supresses most other output.')
parser.add_argument("argument", nargs="+", help='generic argument: can be a hex transaction id '
'(exactly 64 characters) to be fetched from cache or a web service;'
' a transaction as a hex string; a path name to a transaction to be loaded;'
' a spendable 4-tuple of the form tx_id/tx_out_idx/script_hex/satoshi_count '
'to be added to TxIn list; an address/satoshi_count to be added to the TxOut '
'list; an address to be added to the TxOut list and placed in the "split'
' pool".')
args = parser.parse_args()
# defaults
txs = []
spendables = []
payables = []
key_iters = []
TX_ID_RE = re.compile(r"^[0-9a-fA-F]{64}$")
# there are a few warnings we might optionally print out, but only if
# they are relevant. We don't want to print them out multiple times, so we
# collect them here and print them at the end if they ever kick in.
warning_tx_cache = None
warning_get_tx = None
warning_spendables = None
if args.private_key_file:
wif_re = re.compile(r"[1-9a-km-zA-LMNP-Z]{51,111}")
# address_re = re.compile(r"[1-9a-kmnp-zA-KMNP-Z]{27-31}")
for f in args.private_key_file:
if f.name.endswith(".gpg"):
gpg_args = ["gpg", "-d"]
if args.gpg_argument:
gpg_args.extend(args.gpg_argument.split())
gpg_args.append(f.name)
popen = subprocess.Popen(gpg_args, stdout=subprocess.PIPE)
f = popen.stdout
for line in f.readlines():
# decode
if isinstance(line, bytes):
line = line.decode("utf8")
# look for WIFs
possible_keys = wif_re.findall(line)
def make_key(x):
try:
return Key.from_text(x)
except Exception:
return None
keys = [make_key(x) for x in possible_keys]
for key in keys:
if key:
key_iters.append((k.wif() for k in key.subkeys("")))
# if len(keys) == 1 and key.hierarchical_wallet() is None:
# # we have exactly 1 WIF. Let's look for an address
# potential_addresses = address_re.findall(line)
# we create the tx_db lazily
tx_db = None
for arg in args.argument:
# hex transaction id
if TX_ID_RE.match(arg):
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx = tx_db.get(h2b_rev(arg))
if not tx:
for m in [warning_tx_cache, warning_get_tx, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
parser.error("can't find Tx with id %s" % arg)
txs.append(tx)
continue
# hex transaction data
try:
tx = Tx.tx_from_hex(arg)
txs.append(tx)
continue
except Exception:
pass
try:
key = Key.from_text(arg)
# TODO: check network
if key.wif() is None:
payables.append((key.address(), 0))
continue
# TODO: support paths to subkeys
key_iters.append((k.wif() for k in key.subkeys("")))
continue
except Exception:
pass
if os.path.exists(arg):
try:
with open(arg, "rb") as f:
if f.name.endswith("hex"):
f = io.BytesIO(codecs.getreader("hex_codec")(f).read())
tx = Tx.parse(f)
txs.append(tx)
try:
tx.parse_unspents(f)
except Exception as ex:
pass
continue
except Exception:
pass
parts = arg.split("/")
if len(parts) == 4:
# spendable
try:
spendables.append(Spendable.from_text(arg))
continue
except Exception:
pass
# TODO: fix allowable_prefixes
allowable_prefixes = b'\0'
if len(parts) == 2 and encoding.is_valid_bitcoin_address(
parts[0], allowable_prefixes=allowable_prefixes):
try:
payables.append(parts)
continue
except ValueError:
pass
parser.error("can't parse %s" % arg)
if args.fetch_spendables:
warning_spendables = message_about_spendables_for_address_env()
for address in args.fetch_spendables:
spendables.extend(spendables_for_address(address))
for tx in txs:
if tx.missing_unspents() and args.augment:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx.unspents_from_db(tx_db, ignore_missing=True)
txs_in = []
txs_out = []
unspents = []
# we use a clever trick here to keep each tx_in corresponding with its tx_out
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[:smaller])
txs_out.extend(tx.txs_out[:smaller])
unspents.extend(tx.unspents[:smaller])
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[smaller:])
txs_out.extend(tx.txs_out[smaller:])
unspents.extend(tx.unspents[smaller:])
for spendable in spendables:
txs_in.append(spendable.tx_in())
unspents.append(spendable)
for address, coin_value in payables:
script = standard_tx_out_script(address)
txs_out.append(TxOut(coin_value, script))
lock_time = args.lock_time
version = args.transaction_version
# if no lock_time is explicitly set, inherit from the first tx or use default
if lock_time is None:
if txs:
lock_time = txs[0].lock_time
else:
lock_time = DEFAULT_LOCK_TIME
# if no version is explicitly set, inherit from the first tx or use default
if version is None:
if txs:
version = txs[0].version
else:
version = DEFAULT_VERSION
if args.remove_tx_in:
s = set(args.remove_tx_in)
txs_in = [tx_in for idx, tx_in in enumerate(txs_in) if idx not in s]
if args.remove_tx_out:
s = set(args.remove_tx_out)
txs_out = [tx_out for idx, tx_out in enumerate(txs_out) if idx not in s]
tx = Tx(txs_in=txs_in, txs_out=txs_out, lock_time=lock_time, version=version, unspents=unspents)
fee = args.fee
try:
distribute_from_split_pool(tx, fee)
except ValueError as ex:
print("warning: %s" % ex.args[0], file=sys.stderr)
unsigned_before = tx.bad_signature_count()
if unsigned_before > 0 and key_iters:
def wif_iter(iters):
while len(iters) > 0:
for idx, iter in enumerate(iters):
try:
wif = next(iter)
yield wif
except StopIteration:
iters = iters[:idx] + iters[idx+1:]
break
print("signing...", file=sys.stderr)
sign_tx(tx, wif_iter(key_iters))
unsigned_after = tx.bad_signature_count()
if unsigned_after > 0 and key_iters:
print("warning: %d TxIn items still unsigned" % unsigned_after, file=sys.stderr)
if len(tx.txs_in) == 0:
print("warning: transaction has no inputs", file=sys.stderr)
if len(tx.txs_out) == 0:
print("warning: transaction has no outputs", file=sys.stderr)
include_unspents = (unsigned_after > 0)
tx_as_hex = tx.as_hex(include_unspents=include_unspents)
if args.output_file:
f = args.output_file
if f.name.endswith(".hex"):
f.write(tx_as_hex.encode("utf8"))
else:
tx.stream(f)
if include_unspents:
tx.stream_unspents(f)
f.close()
elif args.show_unspents:
for spendable in tx.tx_outs_as_spendable():
print(spendable.as_text())
else:
if not tx.missing_unspents():
check_fees(tx)
dump_tx(tx, args.network)
if include_unspents:
print("including unspents in hex dump since transaction not fully signed")
print(tx_as_hex)
if args.cache:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx_db.put(tx)
if args.bitcoind_url:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
validate_bitcoind(tx, tx_db, args.bitcoind_url)
if tx.missing_unspents():
print("\n** can't validate transaction as source transactions missing", file=sys.stderr)
else:
try:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx.validate_unspents(tx_db)
print('all incoming transaction values validated')
except BadSpendableError as ex:
print("\n**** ERROR: FEES INCORRECTLY STATED: %s" % ex.args[0], file=sys.stderr)
except Exception as ex:
print("\n*** can't validate source transactions as untampered: %s" %
ex.args[0], file=sys.stderr)
# print warnings
for m in [warning_tx_cache, warning_get_tx, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
def test_sign(self, keynums_satoshi, out_addr, out_satoshi, change_keynum,
change_satoshi, prevtx_keynums, prevtx_outputs,
prevtx_inputs):
"""
Performs a tx signing test, comparing Polly's signed tx against the reference wallet.
Basic tx signing parameters:
keynums_satoshi - list of tuples (keynum, satoshis) with key indices and their unspent value to
use as tx inputs. Funding above out_satoshi + change_satoshi will be fees.
out_addr - output address in bitcoin address format.
out_satoshi - output amount in satoshis.
change_keynum - change key index in the wallet, use None for no change.
change_satoshi - change amount in satoshis, use 0 for no change.
Supporting (previous) txs will be created to fund keynums and are controlled by these parameters:
prevtx_keynums - keynums will show up as outputs of previous txs. A number randomly picked
from this list controls how many keynums are chosen to include per prev tx.
prevtx_outputs - in addition to previous tx outputs funding keynums, other outputs may
be present. A number randomly picked from this list controls how many
ignored outputs are injected per keynum.
prevtx_inputs - previous txs need inputs too. A number randomly picked from this list
controls how many inputs are chosen per previous tx.
"""
total_in_satoshi = sum(satoshi for _, satoshi in keynums_satoshi)
fee_satoshi = total_in_satoshi - out_satoshi - change_satoshi
chain0 = self.wallet.subkey(0, is_hardened=True).subkey(0)
chain1 = self.wallet.subkey(0, is_hardened=True).subkey(1)
assert total_in_satoshi >= out_satoshi + change_satoshi
assert len(keynums_satoshi) <= 32
#
# Step 1: send the inputs and outputs to use in the signed tx
#
# Create the (key num, compressed public key) tuple, input keys assume an m/0h/0/keynum path for now.
keys = [
(keynum,
encoding.public_pair_to_sec(chain0.subkey(keynum).public_pair))
for (keynum, _) in keynums_satoshi
]
# Convert base58 address to raw hex address
out_addr_160 = encoding.bitcoin_address_to_hash160_sec(out_addr)
print()
print("Sign tx parameters:", "")
for i, (keynum, satoshi) in enumerate(keynums_satoshi):
print("{:<10}{:16.8f} btc < key {}".format(
" inputs" if 0 == i else "", satoshi / 100000000, keynum))
print("{:<10}{:16.8f} btc > {}".format(" output",
out_satoshi / 100000000,
self.hexstr(out_addr_160)))
print("{:<10}{:16.8f} btc > key {}".format(" change",
change_satoshi / 100000000,
change_keynum))
print("{:<10}{:16.8f} btc".format(" fee", fee_satoshi / 100000000))
print("{:<10}{:16.8f} btc".format(" total",
total_in_satoshi / 100000000))
print()
print(self.PAD.format("Send tx parameters"), end='')
# ---> send to Polly
self.polly.send_sign_tx(keys, out_addr_160, out_satoshi, change_keynum,
change_satoshi)
print(self.__outok())
#
# Step 2: send previous txs to fund the inputs
#
print()
cur = 0
prevtx_info = []
while cur < len(keynums_satoshi):
prevtx_outputs_satoshi = []
# Calculate how many keynums will be associated with this prev tx
end = min(cur + random.choice(prevtx_keynums),
len(keynums_satoshi))
# Create the prev tx output list
for keynum, satoshi in keynums_satoshi[cur:end]:
# Inject a random number of outputs not associated with tx input keynums
for _ in range(0, random.choice(prevtx_outputs)):
prevtx_outputs_satoshi.append(
(random.randint(0, 0x7FFFFFFF),
random.randint(0, 2099999997690000)))
# Add the outputs funding the tx input keynums
prevtx_outputs_satoshi.append((keynum, satoshi))
# Create output script
addr = chain0.subkey(keynum, as_private=True).bitcoin_address()
script = standard_tx_out_script(addr)
# Capture some info we'll use later to verify the signed tx
prevtx_info.append((
keynum,
satoshi,
script,
0, # This is the hash and will be replaced later
len(prevtx_outputs_satoshi) -
1)) # Index of the valid output
print("{:30}{}".format(
"Make prev tx for keys", " ".join(
str(keynum)
for (keynum, _, _, _, _) in prevtx_info[cur:])))
# Create the prev tx
prevtx = self.create_prev_tx(
win=Wallet.from_master_secret(
bytes(0)), # create a dummy wallet
in_keynum=list(range(0, random.choice(prevtx_inputs))),
sources_per_input=1,
wout=chain0,
out_keynum_satoshi=prevtx_outputs_satoshi,
fees_satoshi=random.randint(100, 1000))
# We have built the prev tx, calculate its hash (and reverse the bytes)
prevtx_hash = encoding.double_sha256(prevtx)[::-1]
# Update the hashes now that we have a full prev tx
for i, (keynum, satoshi, script, _,
outidx) in enumerate(prevtx_info[cur:]):
prevtx_info[i + cur] = (keynum, satoshi, script, prevtx_hash,
outidx)
# Create the index table that matches a keynum index with an ouput index in this prev tx
idx_table = [
(keynum_idx + cur, outidx)
for keynum_idx, (_, _, _, _,
outidx) in enumerate(prevtx_info[cur:])
]
print(self.PAD.format("Send prev tx "), end='')
# ---> send to Polly
self.polly.send_prev_tx(idx_table, prevtx)
print(self.__outok())
cur = end
#
# Step 3: generate a signed tx with the reference wallet and compare against Polly's
#
spendables = []
wifs = []
# Make sure that the inputs add up correctly, and prep the input_sources for reference wallet signing
for (keynum, satoshi, script, prevtx_hash, outidx) in prevtx_info:
spendables.append(Spendable(satoshi, script, prevtx_hash, outidx))
wifs.append(chain0.subkey(keynum, as_private=True).wif())
change_addr = chain1.subkey(change_keynum).bitcoin_address()
payables = [(out_addr, out_satoshi), (change_addr, change_satoshi)]
print()
print(self.PAD.format("Make reference signature"))
signed_tx = create_signed_tx(spendables, payables, wifs, fee_satoshi)
signed_tx = self.get_tx_bytes(signed_tx)
print(self.PAD.format("Get signed tx"), end='', flush=True)
# <--- get the signed tx from Polly
polly_signed_tx = self.polly.send_get_signed_tx()
#print(self.txstr(polly_signed_tx))
#print(self.txstr(signed_tx))
print(self.__outok())
# Compare reference wallet signed tx with polly's
assert signed_tx == polly_signed_tx, "test_sign: signature mismatch\nExpected:\n" + self.hexstr(
signed_tx) + "\n\nActual:\n" + self.hexstr(polly_signed_tx)
def parse_context(args, parser):
# defaults
txs = []
spendables = []
payables = []
key_iters = []
TX_ID_RE = re.compile(r"^[0-9a-fA-F]{64}$")
# there are a few warnings we might optionally print out, but only if
# they are relevant. We don't want to print them out multiple times, so we
# collect them here and print them at the end if they ever kick in.
warning_tx_cache = None
warning_tx_for_tx_hash = None
warning_spendables = None
if args.private_key_file:
wif_re = re.compile(r"[1-9a-km-zA-LMNP-Z]{51,111}")
# address_re = re.compile(r"[1-9a-kmnp-zA-KMNP-Z]{27-31}")
for f in args.private_key_file:
if f.name.endswith(".gpg"):
gpg_args = ["gpg", "-d"]
if args.gpg_argument:
gpg_args.extend(args.gpg_argument.split())
gpg_args.append(f.name)
popen = subprocess.Popen(gpg_args, stdout=subprocess.PIPE)
f = popen.stdout
for line in f.readlines():
# decode
if isinstance(line, bytes):
line = line.decode("utf8")
# look for WIFs
possible_keys = wif_re.findall(line)
def make_key(x):
try:
return Key.from_text(x)
except Exception:
return None
keys = [make_key(x) for x in possible_keys]
for key in keys:
if key:
key_iters.append((k.wif() for k in key.subkeys("")))
# if len(keys) == 1 and key.hierarchical_wallet() is None:
# # we have exactly 1 WIF. Let's look for an address
# potential_addresses = address_re.findall(line)
# update p2sh_lookup
p2sh_lookup = {}
if args.pay_to_script:
for p2s in args.pay_to_script:
try:
script = h2b(p2s)
p2sh_lookup[hash160(script)] = script
except Exception:
print("warning: error parsing pay-to-script value %s" % p2s)
if args.pay_to_script_file:
hex_re = re.compile(r"[0-9a-fA-F]+")
for f in args.pay_to_script_file:
count = 0
for l in f:
try:
m = hex_re.search(l)
if m:
p2s = m.group(0)
script = h2b(p2s)
p2sh_lookup[hash160(script)] = script
count += 1
except Exception:
print("warning: error parsing pay-to-script file %s" % f.name)
if count == 0:
print("warning: no scripts found in %s" % f.name)
# we create the tx_db lazily
tx_db = None
for arg in args.argument:
# hex transaction id
if TX_ID_RE.match(arg):
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(args.network)
tx_db = get_tx_db(args.network)
tx = tx_db.get(h2b_rev(arg))
if not tx:
for m in [warning_tx_cache, warning_tx_for_tx_hash, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
parser.error("can't find Tx with id %s" % arg)
txs.append(tx)
continue
# hex transaction data
try:
tx = Tx.from_hex(arg)
txs.append(tx)
continue
except Exception:
pass
is_valid = is_address_valid(arg, allowable_netcodes=[args.network])
if is_valid:
payables.append((arg, 0))
continue
try:
key = Key.from_text(arg)
# TODO: check network
if key.wif() is None:
payables.append((key.address(), 0))
continue
# TODO: support paths to subkeys
key_iters.append((k.wif() for k in key.subkeys("")))
continue
except Exception:
pass
if os.path.exists(arg):
try:
with open(arg, "rb") as f:
if f.name.endswith("hex"):
f = io.BytesIO(codecs.getreader("hex_codec")(f).read())
tx = Tx.parse(f)
txs.append(tx)
try:
tx.parse_unspents(f)
except Exception as ex:
pass
continue
except Exception:
pass
parts = arg.split("/")
if len(parts) == 4:
# spendable
try:
spendables.append(Spendable.from_text(arg))
continue
except Exception:
pass
if len(parts) == 2 and is_address_valid(parts[0], allowable_netcodes=[args.network]):
try:
payables.append(parts)
continue
except ValueError:
pass
parser.error("can't parse %s" % arg)
if args.fetch_spendables:
warning_spendables = message_about_spendables_for_address_env(args.network)
for address in args.fetch_spendables:
spendables.extend(spendables_for_address(address))
for tx in txs:
if tx.missing_unspents() and args.augment:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(args.network)
tx_db = get_tx_db(args.network)
tx.unspents_from_db(tx_db, ignore_missing=True)
return (txs, spendables, payables, key_iters, p2sh_lookup, tx_db, warning_tx_cache,
warning_tx_for_tx_hash, warning_spendables)