def broadcast_tx(self, tx):
"""
Send the tx to half our peers, wait for half of the remainder to announce the tx before
calling back True.
"""
def on_peer_anncounce(txid):
self.pending_txs[txid][0] += 1
if self.pending_txs[txid][0] >= self.pending_txs[txid][1] / 2:
if self.pending_txs[txid][3].active():
self.pending_txs[txid][3].cancel()
self.pending_txs[txid][2].callback(True)
d = defer.Deferred()
self.inventory[bitcoin.txhash(tx)] = tx
inv_packet = inv("TX", bitcoin.txhash(tx))
self.bloom_filter.insert(bitcoin.bin_txhash(tx))
self.pending_txs[bitcoin.txhash(tx)] = [
0,
len(self.peers) / 2, d,
reactor.callLater(10, d.callback, False)
]
for peer in self.peers[len(self.peers) / 2:]:
peer.protocol.update_filter()
peer.protocol.add_inv_callback(bitcoin.txhash(tx),
on_peer_anncounce)
for peer in self.peers[:len(self.peers) / 2]:
peer.protocol.send_message(message(inv_packet, self.params))
return d
def segwit_txhash(tx):
if isinstance(tx, str) and re.match('^[0-9a-fA-F]*$', tx):
tx = changebase(tx, 16, 256)
tx_hash = txhash(tx)
tx = strip_witness_data(tx)
tx_id = txhash(tx)
return {'hash': tx_hash, 'txid': tx_id}
def segwit_txhash(tx):
if isinstance(tx, str) and re.match('^[0-9a-fA-F]*$', tx):
tx = changebase(tx, 16, 256)
tx_hash = txhash(tx)
tx = strip_witness_data(tx)
tx_id = txhash(tx)
return {'hash': tx_hash, 'txid': tx_id}
def push(self, txd):
tx = btc.serialize(txd)
log.debug('\n' + tx)
log.debug('txid = ' + btc.txhash(tx))
# TODO send to a random maker or push myself
# TODO need to check whether the other party sent it
# self.msgchan.push_tx(self.active_orders.keys()[0], txhex)
pushed = jm_single().bc_interface.pushtx(tx)
if pushed[0]:
self.txid = btc.txhash(tx)
else:
log.debug('unable to pushtx, reason: '+str(pushed[1]))
return pushed[0]
def push(self):
tx = btc.serialize(self.latest_tx)
log.debug('\n' + tx)
self.txid = btc.txhash(tx)
log.debug('txid = ' + self.txid)
tx_broadcast = jm_single().config.get('POLICY', 'tx_broadcast')
if tx_broadcast == 'self':
pushed = jm_single().bc_interface.pushtx(tx)
elif tx_broadcast in ['random-peer', 'not-self']:
n = len(self.active_orders)
if tx_broadcast == 'random-peer':
i = random.randrange(n + 1)
else:
i = random.randrange(n)
if i == n:
pushed = jm_single().bc_interface.pushtx(tx)
else:
self.msgchan.push_tx(self.active_orders.keys()[i], tx)
pushed = True
elif tx_broadcast == 'random-maker':
crow = self.db.execute(
'SELECT DISTINCT counterparty FROM orderbook ORDER BY ' +
'RANDOM() LIMIT 1;').fetchone()
counterparty = crow['counterparty']
log.debug('pushing tx to ' + counterparty)
self.msgchan.push_tx(counterparty, tx)
pushed = True
if not pushed:
log.debug('unable to pushtx')
return pushed
def make_sign_and_push(ins_full,
wallet,
amount,
output_addr=None,
change_addr=None,
hashcode=btc.SIGHASH_ALL):
total = sum(x['value'] for x in ins_full.values())
ins = ins_full.keys()
#random output address and change addr
output_addr = wallet.get_new_addr(1, 1) if not output_addr else output_addr
change_addr = wallet.get_new_addr(1, 0) if not change_addr else change_addr
outs = [{'value': amount,
'address': output_addr}, {'value': total - amount - 100000,
'address': change_addr}]
tx = btc.mktx(ins, outs)
de_tx = btc.deserialize(tx)
for index, ins in enumerate(de_tx['ins']):
utxo = ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index'])
addr = ins_full[utxo]['address']
priv = wallet.get_key_from_addr(addr)
if index % 2:
priv = binascii.unhexlify(priv)
tx = btc.sign(tx, index, priv, hashcode=hashcode)
#pushtx returns False on any error
print btc.deserialize(tx)
push_succeed = jm_single().bc_interface.pushtx(tx)
if push_succeed:
return btc.txhash(tx)
else:
return False
def push(self):
tx = btc.serialize(self.latest_tx)
log.debug('\n' + tx)
self.txid = btc.txhash(tx)
log.debug('txid = ' + self.txid)
tx_broadcast = jm_single().config.get('POLICY', 'tx_broadcast')
if tx_broadcast == 'self':
pushed = jm_single().bc_interface.pushtx(tx)
elif tx_broadcast in ['random-peer', 'not-self']:
n = len(self.active_orders)
if tx_broadcast == 'random-peer':
i = random.randrange(n + 1)
else:
i = random.randrange(n)
if i == n:
pushed = jm_single().bc_interface.pushtx(tx)
else:
self.msgchan.push_tx(self.active_orders.keys()[i], tx)
pushed = True
elif tx_broadcast == 'random-maker':
crow = self.db.execute(
'SELECT DISTINCT counterparty FROM orderbook ORDER BY ' +
'RANDOM() LIMIT 1;'
).fetchone()
counterparty = crow['counterparty']
log.debug('pushing tx to ' + counterparty)
self.msgchan.push_tx(counterparty, tx)
pushed = True
if not pushed:
log.debug('unable to pushtx')
return pushed
def pushPayment(self): #compliantScript = bitcoin.mk_multisig_script([bitcoin.privtopub(self.privS), self.pubKeyClient], 2,2) # inversion!!!! compliantScript = bitcoin.mk_multisig_script([self.pubKeyClient, bitcoin.privtopub(self.privS)], 2,2) sigServer = bitcoin.multisign(self.lastpayment, 0, compliantScript, self.privS) signedPtx = bitcoin.apply_multisignatures(self.lastpayment, 0, compliantScript, [self.lastsig, sigServer]) print 'Broadcast the very last payment. Just got richer. Tx hash:', bitcoin.txhash(signedPtx) bitcoin.pushtx(signedPtx)
def make_sign_and_push(
ins_full, wallet, amount, output_addr=None, change_addr=None, hashcode=btc.SIGHASH_ALL, estimate_fee=False
):
"""Utility function for easily building transactions
from wallets
"""
total = sum(x["value"] for x in ins_full.values())
ins = ins_full.keys()
# random output address and change addr
output_addr = wallet.get_new_addr(1, 1) if not output_addr else output_addr
change_addr = wallet.get_new_addr(1, 0) if not change_addr else change_addr
fee_est = estimate_tx_fee(len(ins), 2) if estimate_fee else 10000
outs = [{"value": amount, "address": output_addr}, {"value": total - amount - fee_est, "address": change_addr}]
tx = btc.mktx(ins, outs)
de_tx = btc.deserialize(tx)
for index, ins in enumerate(de_tx["ins"]):
utxo = ins["outpoint"]["hash"] + ":" + str(ins["outpoint"]["index"])
addr = ins_full[utxo]["address"]
priv = wallet.get_key_from_addr(addr)
if index % 2:
priv = binascii.unhexlify(priv)
tx = btc.sign(tx, index, priv, hashcode=hashcode)
# pushtx returns False on any error
print btc.deserialize(tx)
push_succeed = jm_single().bc_interface.pushtx(tx)
if push_succeed:
return btc.txhash(tx)
else:
return False
def on_fetch(ec, result):
if ec:
# if it's not in the blockchain, let's try broadcasting it.
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
else:
d.callback(order_id)
def on_validate(success):
def on_fetch(ec, result):
if ec:
# if it's not in the blockchain, let's try broadcasting it.
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
else:
d.callback(order_id)
if success:
# broadcast anyway but don't wait for callback
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx)
d.callback(order_id)
else:
# check to see if the tx is already in the blockchain
self.blockchain.fetch_transaction(unhexlify(bitcoin.txhash(tx)), on_fetch)
def on_push_tx(self, nick, txhex):
log.debug('received txhex from ' + nick + ' to push\n' + txhex)
pushed = jm_single().bc_interface.pushtx(txhex)
if pushed:
log.debug('pushed tx ' + btc.txhash(txhex))
else:
log.debug('failed to push tx sent by taker')
self.msgchan.send_error(nick, 'Unable to push tx')
def on_fetch(ec, result):
if ec:
# if it's not in the blockchain, let's try broadcasting it.
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
else:
d.callback(order_id)
def on_push_tx(self, nick, txhex):
log.debug('received txhex from ' + nick + ' to push\n' + txhex)
pushed = jm_single().bc_interface.pushtx(txhex)
if pushed:
log.debug('pushed tx ' + btc.txhash(txhex))
else:
log.debug('failed to push tx sent by taker')
self.msgchan.send_error(nick, 'Unable to push tx')
def push_tx(self, tx_signed, raw=False):
# push transactions requires a post to blockr
path = '/tx/push'
url = self._url + path
payload = {'hex': tx_signed}
response = requests.post(url, data=payload)
if raw:
return response
return bitcoin.txhash(tx_signed)
def on_peer_announce(tx):
txhash = bitcoin.txhash(bitcoin.serialize(tx["tx"]))
if txhash in self.subscriptions[address][0] and self.subscriptions[address][0][txhash][0] != "complete":
self.subscriptions[address][0][txhash][0] += 1
if self.subscriptions[address][0][txhash][0] >= self.subscriptions[address][0][txhash][1]:
self.subscriptions[address][0][txhash][0] = "complete"
self.subscriptions[address][1](tx["tx"])
elif txhash not in self.subscriptions[address][0]:
self.subscriptions[address][0][txhash] = [1, len(self.peers)/2]
def push_tx(self, tx_signed, raw=False):
# push transactions requires a post to blockr
path = '/tx/push'
url = self._url + path
payload = {'hex': tx_signed}
response = requests.post(url, data=payload)
if raw:
return response
return bitcoin.txhash(tx_signed)
def direct_send(wallet, amount, mixdepth, destaddr, answeryes=False):
"""Send coins directly from one mixdepth to one destination address;
does not need IRC. Sweep as for normal sendpayment (set amount=0).
"""
#Sanity checks; note destaddr format is carefully checked in startup
assert isinstance(mixdepth, int)
assert mixdepth >= 0
assert isinstance(amount, int)
assert amount >= 0 and amount < 10000000000
assert isinstance(wallet, Wallet)
import bitcoin as btc
from pprint import pformat
if amount == 0:
utxos = wallet.get_utxos_by_mixdepth()[mixdepth]
if utxos == {}:
log.error("There are no utxos in mixdepth: " + str(mixdepth) +
", quitting.")
return
total_inputs_val = sum([va['value'] for u, va in utxos.iteritems()])
fee_est = estimate_tx_fee(len(utxos), 1)
outs = [{"address": destaddr, "value": total_inputs_val - fee_est}]
else:
initial_fee_est = estimate_tx_fee(8, 2) #8 inputs to be conservative
utxos = wallet.select_utxos(mixdepth, amount + initial_fee_est)
if len(utxos) < 8:
fee_est = estimate_tx_fee(len(utxos), 2)
else:
fee_est = initial_fee_est
total_inputs_val = sum([va['value'] for u, va in utxos.iteritems()])
changeval = total_inputs_val - fee_est - amount
outs = [{"value": amount, "address": destaddr}]
change_addr = wallet.get_internal_addr(mixdepth)
outs.append({"value": changeval, "address": change_addr})
#Now ready to construct transaction
log.info("Using a fee of : " + str(fee_est) + " satoshis.")
if amount != 0:
log.info("Using a change value of: " + str(changeval) + " satoshis.")
tx = btc.mktx(utxos.keys(), outs)
stx = btc.deserialize(tx)
for index, ins in enumerate(stx['ins']):
utxo = ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index'])
addr = utxos[utxo]['address']
tx = btc.sign(tx, index, wallet.get_key_from_addr(addr))
txsigned = btc.deserialize(tx)
log.info("Got signed transaction:\n")
log.info(tx + "\n")
log.info(pformat(txsigned))
if not answeryes:
if raw_input(
'Would you like to push to the network? (y/n):')[0] != 'y':
log.info("You chose not to broadcast the transaction, quitting.")
return
jm_single().bc_interface.pushtx(tx)
txid = btc.txhash(tx)
log.info("Transaction sent: " + txid + ", shutting down")
def push(self, tx):
"""
Args:
tx: hex of signed transaction
Returns:
pushed transaction
"""
self._service.push_tx(tx)
return bitcoin.txhash(tx)
def push(self, txd):
tx = btc.serialize(txd)
debug('\n' + tx)
debug('txid = ' + btc.txhash(tx))
#TODO send to a random maker or push myself
#TODO need to check whether the other party sent it
#self.msgchan.push_tx(self.active_orders.keys()[0], txhex)
self.txid = common.bc_interface.pushtx(tx)
if self.txid == None:
debug('unable to pushtx')
def push(self, txd):
tx = btc.serialize(txd)
debug('\n' + tx)
debug('txid = ' + btc.txhash(tx))
#TODO send to a random maker or push myself
#TODO need to check whether the other party sent it
#self.msgchan.push_tx(self.active_orders.keys()[0], txhex)
self.txid = common.bc_interface.pushtx(tx)
if self.txid == None:
debug('unable to pushtx')
def push(self, tx):
"""
Args:
tx: hex of signed transaction
Returns:
pushed transaction
"""
self._service.push_tx(tx)
return bitcoin.txhash(tx)
def on_validate(success):
def on_fetch(ec, result):
if ec:
# if it's not in the blockchain, let's try broadcasting it.
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
else:
d.callback(order_id)
if success:
# broadcast anyway but don't wait for callback
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx)
d.callback(order_id)
else:
# check to see if the tx is already in the blockchain
self.blockchain.fetch_transaction(
unhexlify(bitcoin.txhash(tx)), on_fetch)
def on_tx_received(self, address_version, address_hash, height, block_hash, tx):
"""
Fire when the libbitcoin server tells us we received a payment to this funding address.
While unlikely, a user may send multiple transactions to the funding address to reach the
funding level. We need to keep a running balance and increment it when a new transaction
is received. If the contract is fully funded, we push a notification to the websockets.
"""
# decode the transaction
transaction = deserialize(tx.encode("hex"))
# get the amount (in satoshi) the user is expected to pay
amount_to_pay = int(float(self.contract["buyer_order"]["order"]["payment"]["amount"]) * 100000000)
if tx not in self.received_txs: # make sure we aren't parsing the same tx twice.
output_script = 'a914' + digest(unhexlify(
self.contract["buyer_order"]["order"]["payment"]["redeem_script"])).encode("hex") + '87'
for output in transaction["outs"]:
if output["script"] == output_script:
self.amount_funded += output["value"]
if tx not in self.received_txs:
self.received_txs.append(tx)
self.outpoints.append({"output": bitcoin.txhash(tx.encode("hex")) + ":" + str(output["index"]),
"value": output["value"]})
if self.amount_funded >= amount_to_pay: # if fully funded
self.timeout.cancel()
self.blockchain.unsubscribe_address(
self.contract["buyer_order"]["order"]["payment"]["address"], self.on_tx_received)
order_id = digest(json.dumps(self.contract, indent=4)).encode("hex")
if self.is_purchase:
message_json = {
"payment_received": {
"address": self.contract["buyer_order"]["order"]["payment"]["address"],
"order_id": order_id
}
}
# update the db
self.db.Purchases().update_status(order_id, 1)
self.db.Purchases().update_outpoint(order_id, pickle.dumps(self.outpoints))
self.log.info("Payment for order id %s successfully broadcast to network." % order_id)
else:
message_json = {
"new_order": {
"order_id": order_id,
"title": self.contract["vendor_offer"]["listing"]["item"]["title"]
}
}
self.db.Sales().update_status(order_id, 1)
self.db.Sales().update_outpoint(order_id, pickle.dumps(self.outpoints))
self.log.info("Received new order %s" % order_id)
# push the message over websockets
self.ws.push(json.dumps(message_json, indent=4))
def tx_verify( tx, tx_hash ):
"""
Confirm that a bitcoin transaction has the given hash.
"""
tx_serialized = tx_serialize( tx )
tx_candidate_hash = bitcoin.txhash( tx_serialized )
# tx_reversed_bin_hash = pybitcoin.bin_double_sha256( binascii.unhexlify(tx_serialized) )
# tx_candidate_hash = binascii.hexlify(tx_reversed_bin_hash[::-1])
if tx_hash != tx_candidate_hash:
print tx_serialized
return tx_hash == tx_candidate_hash
def pushPayment(self):
#compliantScript = bitcoin.mk_multisig_script([bitcoin.privtopub(self.privS), self.pubKeyClient], 2,2) # inversion!!!!
compliantScript = bitcoin.mk_multisig_script(
[self.pubKeyClient,
bitcoin.privtopub(self.privS)], 2, 2)
sigServer = bitcoin.multisign(self.lastpayment, 0, compliantScript,
self.privS)
signedPtx = bitcoin.apply_multisignatures(self.lastpayment, 0,
compliantScript,
[self.lastsig, sigServer])
print 'Broadcast the very last payment. Just got richer. Tx hash:', bitcoin.txhash(
signedPtx)
bitcoin.pushtx(signedPtx)
def on_peer_announce(tx):
txhash = bitcoin.txhash(bitcoin.serialize(tx["tx"]))
if txhash in self.subscriptions[address][0] and self.subscriptions[
address][0][txhash][0] != "complete":
self.subscriptions[address][0][txhash][0] += 1
if self.subscriptions[address][0][txhash][
0] >= self.subscriptions[address][0][txhash][1]:
self.subscriptions[address][0][txhash][0] = "complete"
self.subscriptions[address][1](tx["tx"])
elif txhash not in self.subscriptions[address][0]:
self.subscriptions[address][0][txhash] = [
1, len(self.peers) / 2
]
def push(self, txd):
tx = btc.serialize(txd)
log.debug('\n' + tx)
log.debug('txid = ' + btc.txhash(tx))
# TODO send to a random maker or push myself
# TODO need to check whether the other party sent it
# self.msgchan.push_tx(self.active_orders.keys()[0], txhex)
pushed = jm_single().bc_interface.pushtx(tx)
if pushed[0]:
self.txid = pushed[1]
else:
log.debug('unable to pushtx, reason: ' + str(pushed[1]))
return pushed[0]
def broadcast_tx(self, tx):
"""
Send the tx to half our peers, wait for half of the remainder to announce the tx before
calling back True.
"""
def on_peer_anncounce(txid):
self.pending_txs[txid][0] += 1
if self.pending_txs[txid][0] >= self.pending_txs[txid][1] / 2:
if self.pending_txs[txid][3].active():
self.pending_txs[txid][3].cancel()
self.pending_txs[txid][2].callback(True)
d = defer.Deferred()
self.inventory[bitcoin.txhash(tx)] = tx
inv_packet = inv("TX", bitcoin.txhash(tx))
self.bloom_filter.insert(bitcoin.bin_txhash(tx))
self.pending_txs[bitcoin.txhash(tx)] = [0, len(self.peers)/2, d, reactor.callLater(10, d.callback, False)]
for peer in self.peers[len(self.peers)/2:]:
peer.protocol.update_filter()
peer.protocol.add_inv_callback(bitcoin.txhash(tx), on_peer_anncounce)
for peer in self.peers[:len(self.peers)/2]:
peer.protocol.send_message(message(inv_packet, self.params))
return d
def self_sign_and_push(self):
#now sign it ourselves
tx = btc.serialize(self.latest_tx)
for index, ins in enumerate(self.latest_tx['ins']):
utxo = ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index'])
if utxo not in self.input_utxos.keys():
continue
addr = self.input_utxos[utxo]['address']
tx = btc.sign(tx, index, self.wallet.get_key_from_addr(addr))
txhex = btc.serialize(self.latest_tx)
debug('\n' + txhex)
debug('txid = ' + btc.txhash(tx))
#TODO send to a random maker or push myself
#TODO need to check whether the other party sent it
#self.msgchan.push_tx(self.active_orders.keys()[0], txhex)
self.txid = common.bc_interface.pushtx(tx)
if self.txid == None:
debug('unable to pushtx')
def get_txs_and_heights(outs):
txs = {}
heights = {}
for i in range(0, len(outs), 20):
txhashes = []
fetched_heights = []
for j in range(i, min(i + 20, len(outs))):
if outs[j]['output'][65:] == '0':
txhashes.append(outs[j]['output'][:64])
fetched_heights.append(outs[j]['block_height'])
else:
sys.stderr.write("Non-purchase tx found (genesis output index not zero): %s\n" %
outs[j]['output'][:64])
fetched_txs = fetchtx(txhashes)
assert len(fetched_txs) == len(txhashes) == len(fetched_heights)
for h, tx, ht in zip(txhashes, fetched_txs, fetched_heights):
assert b.txhash(str(tx)) == h
txs[h] = tx
heights[h] = ht
sys.stderr.write('Processed transactions: %d\n' % len(txs))
return {"txs": txs, "heights": heights}
def get_txs_and_heights(outs):
txs = {}
heights = {}
for i in range(0, len(outs), 20):
txhashes = []
fetched_heights = []
for j in range(i, min(i + 20, len(outs))):
if outs[j]['output'][65:] == '0':
txhashes.append(outs[j]['output'][:64])
fetched_heights.append(outs[j]['block_height'])
else:
sys.stderr.write("Non-purchase tx found (genesis output index not zero): %s\n" %
outs[j]['output'][:64])
fetched_txs = fetchtx(txhashes)
assert len(fetched_txs) == len(txhashes) == len(fetched_heights)
for h, tx, ht in zip(txhashes, fetched_txs, fetched_heights):
assert b.txhash(str(tx)) == h
txs[h] = tx
heights[h] = ht
sys.stderr.write('Processed transactions: %d\n' % len(txs))
return {"txs": txs, "heights": heights}
def push(self):
tx = btc.serialize(self.latest_tx)
log.debug('\n' + tx)
self.txid = btc.txhash(tx)
log.info('txid = ' + self.txid)
tx_broadcast = jm_single().config.get('POLICY', 'tx_broadcast')
if tx_broadcast == 'self':
pushed = jm_single().bc_interface.pushtx(tx)
elif tx_broadcast in ['random-peer', 'not-self']:
n = len(self.active_orders)
if tx_broadcast == 'random-peer':
i = random.randrange(n + 1)
else:
i = random.randrange(n)
if i == n:
pushed = jm_single().bc_interface.pushtx(tx)
else:
self.msgchan.push_tx(self.active_orders.keys()[i], tx)
pushed = True
elif tx_broadcast == 'random-maker':
crow = self.db.execute(
'SELECT DISTINCT counterparty FROM orderbook ORDER BY ' +
'RANDOM() LIMIT 1;'
).fetchone()
counterparty = crow['counterparty']
log.info('pushing tx to ' + counterparty)
self.msgchan.push_tx(counterparty, tx)
pushed = True
elif tx_broadcast == 'tor':
socks5_host = jm_single().config.get("MESSAGING",
"socks5_host").split(",")[0]
socks5_port = int(jm_single().config.get("MESSAGING",
"socks5_port").split(",")[0])
pushed = tor_broadcast_tx(tx, (socks5_host, socks5_port),
testnet=(get_network() == "testnet"))
if not pushed:
log.error('unable to pushtx')
return pushed
def push(self):
tx = btc.serialize(self.latest_tx)
log.debug('\n' + tx)
self.txid = btc.txhash(tx)
log.info('txid = ' + self.txid)
tx_broadcast = jm_single().config.get('POLICY', 'tx_broadcast')
if tx_broadcast == 'self':
pushed = jm_single().bc_interface.pushtx(tx)
elif tx_broadcast in ['random-peer', 'not-self']:
n = len(self.active_orders)
if tx_broadcast == 'random-peer':
i = random.randrange(n + 1)
else:
i = random.randrange(n)
if i == n:
pushed = jm_single().bc_interface.pushtx(tx)
else:
self.msgchan.push_tx(self.active_orders.keys()[i], tx)
pushed = True
elif tx_broadcast == 'random-maker':
crow = self.db.execute(
'SELECT DISTINCT counterparty FROM orderbook ORDER BY ' +
'RANDOM() LIMIT 1;').fetchone()
counterparty = crow['counterparty']
log.info('pushing tx to ' + counterparty)
self.msgchan.push_tx(counterparty, tx)
pushed = True
elif tx_broadcast == 'tor':
socks5_host = jm_single().config.get("MESSAGING",
"socks5_host").split(",")[0]
socks5_port = int(jm_single().config.get(
"MESSAGING", "socks5_port").split(",")[0])
pushed = tor_broadcast_tx(tx, (socks5_host, socks5_port),
testnet=(get_network() == "testnet"))
if not pushed:
log.error('unable to pushtx')
return pushed
def test_donation_address(setup_donations, amount):
wallets = make_wallets(1, wallet_structures=[[1,1,1,0,0]],
mean_amt=0.5)
wallet = wallets[0]['wallet']
jm_single().bc_interface.sync_wallet(wallet)
#make a rdp from a simple privkey
rdp_priv = "\x01"*32
reusable_donation_pubkey = binascii.hexlify(secp256k1.PrivateKey(
privkey=rdp_priv, raw=True, ctx=btc.ctx).pubkey.serialize())
dest_addr, sign_k = donation_address(reusable_donation_pubkey)
print dest_addr
jm_single().bc_interface.rpc('importaddress',
[dest_addr, '', False])
ins_full = wallet.unspent
total = sum(x['value'] for x in ins_full.values())
ins = ins_full.keys()
output_addr = wallet.get_new_addr(1, 1)
fee_est = 10000
outs = [{'value': amount,
'address': dest_addr}, {'value': total - amount - fee_est,
'address': output_addr}]
tx = btc.mktx(ins, outs)
de_tx = btc.deserialize(tx)
for index, ins in enumerate(de_tx['ins']):
utxo = ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index'])
addr = ins_full[utxo]['address']
priv = wallet.get_key_from_addr(addr)
priv = binascii.unhexlify(priv)
usenonce = binascii.unhexlify(sign_k) if index == 0 else None
if index == 0:
log.debug("Applying rdp to input: " + str(ins))
tx = btc.sign(tx, index, priv, usenonce=usenonce)
#pushtx returns False on any error
push_succeed = jm_single().bc_interface.pushtx(tx)
if push_succeed:
log.debug(btc.txhash(tx))
else:
assert False
#Role of receiver: regenerate the destination private key,
#and address, from the nonce of the first input; check it has
#received the coins.
detx = btc.deserialize(tx)
first_utxo_script = detx['ins'][0]['script']
sig, pub = btc.deserialize_script(first_utxo_script)
log.debug(sig)
sig = binascii.unhexlify(sig)
kGlen = ord(sig[3])
kG = sig[4:4+kGlen]
log.debug(binascii.hexlify(kG))
if kG[0] == "\x00":
kG = kG[1:]
#H(rdp private key * K) + rdp should be ==> dest addr
#Open issue: re-introduce recovery without ECC shenanigans
#Just cheat by trying both signs for pubkey
coerced_kG_1 = "02" + binascii.hexlify(kG)
coerced_kG_2 = "03" + binascii.hexlify(kG)
for coerc in [coerced_kG_1, coerced_kG_2]:
c = btc.sha256(btc.multiply(binascii.hexlify(rdp_priv), coerc, True))
pub_check = btc.add_pubkeys([reusable_donation_pubkey,
btc.privtopub(c+'01', True)], True)
addr_check = btc.pubtoaddr(pub_check, get_p2pk_vbyte())
log.debug("Found checked address: " + addr_check)
if addr_check == dest_addr:
time.sleep(3)
received = jm_single().bc_interface.get_received_by_addr(
[dest_addr], None)['data'][0]['balance']
assert received == amount
return
assert False
def accept_receipt(self, ws, blockchain, receipt_json=None):
"""
Process the final receipt sent over by the buyer. If valid, broadcast the transaction
to the bitcoin network.
"""
self.ws = ws
self.blockchain = blockchain
try:
if receipt_json:
self.contract["buyer_receipt"] = json.loads(
receipt_json, object_pairs_hook=OrderedDict)
contract_dict = json.loads(json.dumps(self.contract, indent=4),
object_pairs_hook=OrderedDict)
del contract_dict["buyer_receipt"]
contract_hash = digest(json.dumps(contract_dict,
indent=4)).encode("hex")
ref_hash = self.contract["buyer_receipt"]["receipt"]["ref_hash"]
if ref_hash != contract_hash:
raise Exception("Order number doesn't match")
# The buyer may have sent over this whole contract, make sure the data we added wasn't manipulated.
verify_key = self.keychain.signing_key.verify_key
verify_key.verify(
json.dumps(
self.contract["vendor_order_confirmation"]["invoice"],
indent=4),
unhexlify(
self.contract["vendor_order_confirmation"]["signature"]))
order_id = self.contract["vendor_order_confirmation"]["invoice"][
"ref_hash"]
outpoints = pickle.loads(self.db.Sales().get_outpoint(order_id))
payout_address = self.contract["vendor_order_confirmation"][
"invoice"]["payout"]["address"]
redeem_script = str(self.contract["buyer_order"]["order"]
["payment"]["redeem_script"])
for output in outpoints:
del output["value"]
value = self.contract["vendor_order_confirmation"]["invoice"][
"payout"]["value"]
outs = [{'value': value, 'address': payout_address}]
tx = bitcoin.mktx(outpoints, outs)
chaincode = self.contract["buyer_order"]["order"]["payment"][
"chaincode"]
masterkey_b = self.contract["buyer_order"]["order"]["id"][
"pubkeys"]["bitcoin"]
buyer_key = derive_childkey(masterkey_b, chaincode)
vendor_sigs = self.contract["vendor_order_confirmation"][
"invoice"]["payout"]["signature(s)"]
buyer_sigs = self.contract["buyer_receipt"]["receipt"]["payout"][
"signature(s)"]
for index in range(0, len(outpoints)):
for s in vendor_sigs:
if s["input_index"] == index:
sig1 = str(s["signature"])
for s in buyer_sigs:
if s["input_index"] == index:
sig2 = str(s["signature"])
if bitcoin.verify_tx_input(tx, index, redeem_script, sig2,
buyer_key):
tx = bitcoin.apply_multisignatures(tx, index,
str(redeem_script),
sig1, sig2)
else:
raise Exception("Buyer sent invalid signature")
d = defer.Deferred()
def on_broadcast_complete(success):
if success:
d.callback(order_id)
else:
d.callback(False)
def on_validate(success):
def on_fetch(ec, result):
if ec:
# if it's not in the blockchain, let's try broadcasting it.
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
else:
d.callback(order_id)
if success:
# broadcast anyway but don't wait for callback
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx)
d.callback(order_id)
else:
# check to see if the tx is already in the blockchain
self.blockchain.fetch_transaction(
unhexlify(bitcoin.txhash(tx)), on_fetch)
if "txid" in self.contract["buyer_receipt"]["receipt"]["payout"] \
and bitcoin.txhash(tx) == self.contract["buyer_receipt"]["receipt"]["payout"]["txid"]:
# check mempool and blockchain for tx
self.blockchain.validate(tx, cb=on_validate)
else:
# try broadcasting
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
# TODO: update db and file system if successful
# TODO: broadcast over websocket
return d
except Exception:
return defer.succeed(False)
def on_tx_received(self, address_version, address_hash, height, block_hash,
tx):
"""
Fire when the libbitcoin server tells us we received a payment to this funding address.
While unlikely, a user may send multiple transactions to the funding address to reach the
funding level. We need to keep a running balance and increment it when a new transaction
is received. If the contract is fully funded, we push a notification to the websockets.
"""
# decode the transaction
transaction = deserialize(tx.encode("hex"))
# get the amount (in satoshi) the user is expected to pay
amount_to_pay = int(
float(self.contract["buyer_order"]["order"]["payment"]["amount"]) *
100000000)
if tx not in self.received_txs: # make sure we aren't parsing the same tx twice.
output_script = 'a914' + digest(
unhexlify(self.contract["buyer_order"]["order"]["payment"]
["redeem_script"])).encode("hex") + '87'
for output in transaction["outs"]:
if output["script"] == output_script:
self.amount_funded += output["value"]
if tx not in self.received_txs:
self.received_txs.append(tx)
self.outpoints.append({
"output":
bitcoin.txhash(tx.encode("hex")) + ":" +
str(output["index"]),
"value":
output["value"]
})
if self.amount_funded >= amount_to_pay: # if fully funded
self.timeout.cancel()
self.blockchain.unsubscribe_address(
self.contract["buyer_order"]["order"]["payment"]
["address"], self.on_tx_received)
order_id = digest(json.dumps(self.contract,
indent=4)).encode("hex")
if self.is_purchase:
message_json = {
"payment_received": {
"address":
self.contract["buyer_order"]["order"]["payment"]
["address"],
"order_id":
order_id
}
}
# update the db
self.db.Purchases().update_status(order_id, 1)
self.db.Purchases().update_outpoint(
order_id, pickle.dumps(self.outpoints))
self.log.info(
"Payment for order id %s successfully broadcast to network."
% order_id)
else:
message_json = {
"new_order": {
"order_id":
order_id,
"title":
self.contract["vendor_offer"]["listing"]["item"]
["title"]
}
}
self.db.Sales().update_status(order_id, 1)
self.db.Sales().update_outpoint(
order_id, pickle.dumps(self.outpoints))
self.log.info("Received new order %s" % order_id)
# push the message over websockets
self.ws.push(json.dumps(message_json, indent=4))
def __init__(self, hexstr):
self.hexstr = hexstr
self.decoded = bitcoin.deserialize(hexstr)
self.hsh = bitcoin.txhash(hexstr)
self.handle = "BCH_" + self.hsh
def accept_receipt(self, ws, blockchain, receipt_json=None):
"""
Process the final receipt sent over by the buyer. If valid, broadcast the transaction
to the bitcoin network.
"""
self.ws = ws
self.blockchain = blockchain
try:
if receipt_json:
self.contract["buyer_receipt"] = json.loads(receipt_json,
object_pairs_hook=OrderedDict)
contract_dict = json.loads(json.dumps(self.contract, indent=4), object_pairs_hook=OrderedDict)
del contract_dict["buyer_receipt"]
contract_hash = digest(json.dumps(contract_dict, indent=4)).encode("hex")
ref_hash = self.contract["buyer_receipt"]["receipt"]["ref_hash"]
if ref_hash != contract_hash:
raise Exception("Order number doesn't match")
# The buyer may have sent over this whole contract, make sure the data we added wasn't manipulated.
verify_key = self.keychain.signing_key.verify_key
verify_key.verify(json.dumps(self.contract["vendor_order_confirmation"]["invoice"], indent=4),
unhexlify(self.contract["vendor_order_confirmation"]["signature"]))
order_id = self.contract["vendor_order_confirmation"]["invoice"]["ref_hash"]
outpoints = pickle.loads(self.db.Sales().get_outpoint(order_id))
payout_address = self.contract["vendor_order_confirmation"]["invoice"]["payout"]["address"]
redeem_script = str(self.contract["buyer_order"]["order"]["payment"]["redeem_script"])
for output in outpoints:
del output["value"]
value = self.contract["vendor_order_confirmation"]["invoice"]["payout"]["value"]
outs = [{'value': value, 'address': payout_address}]
tx = bitcoin.mktx(outpoints, outs)
chaincode = self.contract["buyer_order"]["order"]["payment"]["chaincode"]
masterkey_b = self.contract["buyer_order"]["order"]["id"]["pubkeys"]["bitcoin"]
buyer_key = derive_childkey(masterkey_b, chaincode)
vendor_sigs = self.contract["vendor_order_confirmation"]["invoice"]["payout"]["signature(s)"]
buyer_sigs = self.contract["buyer_receipt"]["receipt"]["payout"]["signature(s)"]
for index in range(0, len(outpoints)):
for s in vendor_sigs:
if s["input_index"] == index:
sig1 = str(s["signature"])
for s in buyer_sigs:
if s["input_index"] == index:
sig2 = str(s["signature"])
if bitcoin.verify_tx_input(tx, index, redeem_script, sig2, buyer_key):
tx = bitcoin.apply_multisignatures(tx, index, str(redeem_script), sig1, sig2)
else:
raise Exception("Buyer sent invalid signature")
d = defer.Deferred()
def on_broadcast_complete(success):
if success:
d.callback(order_id)
else:
d.callback(False)
def on_validate(success):
def on_fetch(ec, result):
if ec:
# if it's not in the blockchain, let's try broadcasting it.
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
else:
d.callback(order_id)
if success:
# broadcast anyway but don't wait for callback
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx)
d.callback(order_id)
else:
# check to see if the tx is already in the blockchain
self.blockchain.fetch_transaction(unhexlify(bitcoin.txhash(tx)), on_fetch)
if "txid" in self.contract["buyer_receipt"]["receipt"]["payout"] \
and bitcoin.txhash(tx) == self.contract["buyer_receipt"]["receipt"]["payout"]["txid"]:
# check mempool and blockchain for tx
self.blockchain.validate(tx, cb=on_validate)
else:
# try broadcasting
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx, cb=on_broadcast_complete)
# TODO: update db and file system if successful
# TODO: broadcast over websocket
return d
except Exception:
return defer.succeed(False)
def txid(tx): return b.txhash(tx) def serialize(x):
def txid(tx):
return b.txhash(tx)
def add_receipt(self,
received,
libbitcoin_client,
feedback=None,
quality=None,
description=None,
delivery_time=None,
customer_service=None,
review="",
dispute=False,
claim=None,
payout=True):
"""
Add the final piece of the contract that appends the review and payout transaction.
"""
self.blockchain = libbitcoin_client
receipt_json = {
"buyer_receipt": {
"receipt": {
"ref_hash":
digest(json.dumps(self.contract, indent=4)).encode("hex"),
"listing": {
"received":
received,
"listing_hash":
self.contract["buyer_order"]["order"]["ref_hash"]
},
"dispute": {
"dispute": dispute
}
}
}
}
if None not in (feedback, quality, description, delivery_time,
customer_service):
receipt_json["buyer_receipt"]["receipt"]["rating"] = {}
receipt_json["buyer_receipt"]["receipt"]["rating"][
"feedback"] = feedback
receipt_json["buyer_receipt"]["receipt"]["rating"][
"quality"] = quality
receipt_json["buyer_receipt"]["receipt"]["rating"][
"description"] = description
receipt_json["buyer_receipt"]["receipt"]["rating"][
"delivery_time"] = delivery_time
receipt_json["buyer_receipt"]["receipt"]["rating"][
"customer_service"] = customer_service
receipt_json["buyer_receipt"]["receipt"]["rating"][
"review"] = review
if payout:
order_id = self.contract["vendor_order_confirmation"]["invoice"][
"ref_hash"]
outpoints = pickle.loads(
self.db.Purchases().get_outpoint(order_id))
payout_address = self.contract["vendor_order_confirmation"][
"invoice"]["payout"]["address"]
redeem_script = str(self.contract["buyer_order"]["order"]
["payment"]["redeem_script"])
for output in outpoints:
del output["value"]
value = self.contract["vendor_order_confirmation"]["invoice"][
"payout"]["value"]
outs = [{'value': value, 'address': payout_address}]
tx = bitcoin.mktx(outpoints, outs)
signatures = []
chaincode = self.contract["buyer_order"]["order"]["payment"][
"chaincode"]
masterkey_b = bitcoin.bip32_extract_key(
self.keychain.bitcoin_master_privkey)
buyer_priv = derive_childkey(masterkey_b, chaincode,
bitcoin.MAINNET_PRIVATE)
masterkey_v = self.contract["vendor_offer"]["listing"]["id"][
"pubkeys"]["bitcoin"]
vendor_key = derive_childkey(masterkey_v, chaincode)
valid_inputs = 0
for index in range(0, len(outpoints)):
sig = bitcoin.multisign(tx, index, redeem_script, buyer_priv)
signatures.append({"input_index": index, "signature": sig})
for s in self.contract["vendor_order_confirmation"]["invoice"][
"payout"]["signature(s)"]:
if s["input_index"] == index:
if bitcoin.verify_tx_input(tx, index, redeem_script,
s["signature"], vendor_key):
tx = bitcoin.apply_multisignatures(
tx, index, str(redeem_script), sig,
str(s["signature"]))
valid_inputs += 1
receipt_json["buyer_receipt"]["receipt"]["payout"] = {}
if valid_inputs == len(outpoints):
self.log.info("Broadcasting payout tx %s to network" %
bitcoin.txhash(tx))
self.blockchain.broadcast(tx)
receipt_json["buyer_receipt"]["receipt"]["payout"][
"txid"] = bitcoin.txhash(tx)
receipt_json["buyer_receipt"]["receipt"]["payout"][
"signature(s)"] = signatures
receipt_json["buyer_receipt"]["receipt"]["payout"]["value"] = value
if claim:
receipt_json["buyer_receipt"]["receipt"]["dispute"][
"claim"] = claim
receipt = json.dumps(receipt_json["buyer_receipt"]["receipt"],
indent=4)
receipt_json["buyer_receipt"]["signature"] = \
self.keychain.signing_key.sign(receipt, encoder=nacl.encoding.HexEncoder)[:128]
self.contract["buyer_receipt"] = receipt_json["buyer_receipt"]
def test_donation_address(setup_donations, amount):
wallets = make_wallets(1,
wallet_structures=[[1, 1, 1, 0, 0]],
mean_amt=0.5)
wallet = wallets[0]['wallet']
jm_single().bc_interface.sync_wallet(wallet)
#make a rdp from a simple privkey
rdp_priv = "\x01" * 32
reusable_donation_pubkey = binascii.hexlify(
secp256k1.PrivateKey(privkey=rdp_priv, raw=True,
ctx=btc.ctx).pubkey.serialize())
dest_addr, sign_k = donation_address(reusable_donation_pubkey)
print dest_addr
jm_single().bc_interface.rpc('importaddress', [dest_addr, '', False])
ins_full = wallet.unspent
total = sum(x['value'] for x in ins_full.values())
ins = ins_full.keys()
output_addr = wallet.get_new_addr(1, 1)
fee_est = 10000
outs = [{
'value': amount,
'address': dest_addr
}, {
'value': total - amount - fee_est,
'address': output_addr
}]
tx = btc.mktx(ins, outs)
de_tx = btc.deserialize(tx)
for index, ins in enumerate(de_tx['ins']):
utxo = ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index'])
addr = ins_full[utxo]['address']
priv = wallet.get_key_from_addr(addr)
priv = binascii.unhexlify(priv)
usenonce = binascii.unhexlify(sign_k) if index == 0 else None
if index == 0:
log.debug("Applying rdp to input: " + str(ins))
tx = btc.sign(tx, index, priv, usenonce=usenonce)
#pushtx returns False on any error
push_succeed = jm_single().bc_interface.pushtx(tx)
if push_succeed:
log.debug(btc.txhash(tx))
else:
assert False
#Role of receiver: regenerate the destination private key,
#and address, from the nonce of the first input; check it has
#received the coins.
detx = btc.deserialize(tx)
first_utxo_script = detx['ins'][0]['script']
sig, pub = btc.deserialize_script(first_utxo_script)
log.debug(sig)
sig = binascii.unhexlify(sig)
kGlen = ord(sig[3])
kG = sig[4:4 + kGlen]
log.debug(binascii.hexlify(kG))
if kG[0] == "\x00":
kG = kG[1:]
#H(rdp private key * K) + rdp should be ==> dest addr
#Open issue: re-introduce recovery without ECC shenanigans
#Just cheat by trying both signs for pubkey
coerced_kG_1 = "02" + binascii.hexlify(kG)
coerced_kG_2 = "03" + binascii.hexlify(kG)
for coerc in [coerced_kG_1, coerced_kG_2]:
c = btc.sha256(btc.multiply(binascii.hexlify(rdp_priv), coerc, True))
pub_check = btc.add_pubkeys(
[reusable_donation_pubkey,
btc.privtopub(c + '01', True)], True)
addr_check = btc.pubtoaddr(pub_check, get_p2pk_vbyte())
log.debug("Found checked address: " + addr_check)
if addr_check == dest_addr:
time.sleep(3)
received = jm_single().bc_interface.get_received_by_addr(
[dest_addr], None)['data'][0]['balance']
assert received == amount
return
assert False
def tx_deserialize(tx_hex):
"""
Given a serialized transaction, return its inputs, outputs, locktime, and version
Each input will have:
* txid: string
* vout: int
* [optional] sequence: int
* [optional] scriptSig: {"asm": ..., "hex": ...}
Each output will have:
* value: Decimal (in BTC)
* script_hex: string
Return tx, formatted as {'locktime': ..., 'version': ..., 'vin': ..., 'vout': ...}
"""
tx = bitcoin.deserialize(tx_hex)
inputs = tx["ins"]
outputs = tx["outs"]
ret_inputs = []
ret_outputs = []
for inp in inputs:
ret_inp = {
"txid": inp["outpoint"]["hash"],
"vout": int(inp["outpoint"]["index"]),
}
if "sequence" in inp:
ret_inp["sequence"] = int(inp["sequence"])
if "script" in inp:
ret_inp["scriptSig"] = {
"asm": tx_script_to_asm(inp['script']),
"hex": inp["script"]
}
ret_inputs.append(ret_inp)
for i in xrange(0, len(outputs)):
out = outputs[i]
assert len(
out['script']
) > 0, "Invalid transaction scriptpubkey:\n%s" % simplejson.dumps(
tx, indent=4, sort_keys=True)
assert out['value'] < 1000 * (
10**8), "High transaction value\n%s" % simplejson.dumps(
tx, indent=4, sort_keys=True)
ret_out = {
"n": i,
"value": Decimal(out["value"]) / 10**8,
"scriptPubKey": {
"hex": out["script"],
"asm": tx_script_to_asm(out['script'])
},
# compat with pybitcoin
"script_hex": out["script"]
}
ret_outputs.append(ret_out)
ret = {
"txid": bitcoin.txhash(tx_hex),
"hex": tx_hex,
"size": len(tx_hex) / 2,
"locktime": tx['locktime'],
"version": tx['version'],
"vin": ret_inputs,
"vout": ret_outputs
}
return ret
def add_signature(self, nick, sigb64):
if nick not in self.nonrespondants:
debug('add_signature => nick=' + nick + ' not in nonrespondants ' +
str(self.nonrespondants))
return
sig = base64.b64decode(sigb64).encode('hex')
inserted_sig = False
txhex = btc.serialize(self.latest_tx)
#batch retrieval of utxo data
utxo = {}
ctr = 0
for index, ins in enumerate(self.latest_tx['ins']):
utxo_for_checking = ins['outpoint']['hash'] + ':' + str(
ins['outpoint']['index'])
if ins['script'] != '' or utxo_for_checking in self.input_utxos.keys(
):
continue
utxo[ctr] = [index, utxo_for_checking]
ctr += 1
utxo_data = common.bc_interface.query_utxo_set(
[x[1] for x in utxo.values()])
#insert signatures
for i, u in utxo.iteritems():
if utxo_data[i] == None:
continue
sig_good = btc.verify_tx_input(txhex, u[0], utxo_data[i]['script'],
*btc.deserialize_script(sig))
if sig_good:
debug('found good sig at index=%d' % (u[0]))
self.latest_tx['ins'][u[0]]['script'] = sig
inserted_sig = True
#check if maker has sent everything possible
self.utxos[nick].remove(u[1])
if len(self.utxos[nick]) == 0:
debug('nick = ' + nick +
' sent all sigs, removing from nonrespondant list')
self.nonrespondants.remove(nick)
break
if not inserted_sig:
debug('signature did not match anything in the tx')
#TODO what if the signature doesnt match anything
# nothing really to do except drop it, carry on and wonder why the
# other guy sent a failed signature
tx_signed = True
for ins in self.latest_tx['ins']:
if ins['script'] == '':
tx_signed = False
if not tx_signed:
return
self.end_timeout_thread = True
self.all_responded = True
with self.timeout_lock:
self.timeout_lock.notify()
debug('the entire tx is signed, ready to pushtx()')
txhex = btc.serialize(self.latest_tx)
debug('\n' + txhex)
self.txid = btc.txhash(txhex)
debug('pushing tx ' + self.txid)
if self.finishcallback != None:
self.finishcallback(self)
#TODO send to a random maker or push myself
#self.msgchan.push_tx(self.active_orders.keys()[0], txhex)
ret = None
ret = common.bc_interface.pushtx(txhex)
if ret == None:
debug('unable to pushtx')
def txid(tx): return b.txhash(tx) SIGHASH_ALL=1
def tx_deserialize( tx_hex ):
"""
Given a serialized transaction, return its inputs, outputs, locktime, and version
Each input will have:
* txid: string
* vout: int
* [optional] sequence: int
* [optional] scriptSig: {"asm": ..., "hex": ...}
Each output will have:
* value: Decimal (in BTC)
* script_hex: string
Return tx, formatted as {'locktime': ..., 'version': ..., 'vin': ..., 'vout': ...}
"""
tx = bitcoin.deserialize( tx_hex )
inputs = tx["ins"]
outputs = tx["outs"]
ret_inputs = []
ret_outputs = []
for inp in inputs:
ret_inp = {
"txid": inp["outpoint"]["hash"],
"vout": int(inp["outpoint"]["index"]),
}
if "sequence" in inp:
ret_inp["sequence"] = int(inp["sequence"])
if "script" in inp:
ret_inp["scriptSig"] = {
"asm": tx_script_to_asm(inp['script']),
"hex": inp["script"]
}
ret_inputs.append( ret_inp )
for i in xrange(0, len(outputs)):
out = outputs[i]
assert len(out['script']) > 0, "Invalid transaction scriptpubkey:\n%s" % simplejson.dumps(tx, indent=4, sort_keys=True)
assert out['value'] < 1000 * (10**8), "High transaction value\n%s" % simplejson.dumps(tx, indent=4, sort_keys=True)
ret_out = {
"n": i,
"value": Decimal(out["value"]) / 10**8,
"scriptPubKey": {
"hex": out["script"],
"asm": tx_script_to_asm(out['script'])
},
# compat with pybitcoin
"script_hex": out["script"]
}
ret_outputs.append( ret_out )
ret = {
"txid": bitcoin.txhash(tx_hex),
"hex": tx_hex,
"size": len(tx_hex) / 2,
"locktime": tx['locktime'],
"version": tx['version'],
"vin": ret_inputs,
"vout": ret_outputs
}
return ret
def add_receipt(self,
received,
libbitcoin_client,
feedback=None,
quality=None,
description=None,
delivery_time=None,
customer_service=None,
review="",
dispute=False,
claim=None,
payout=True):
"""
Add the final piece of the contract that appends the review and payout transaction.
"""
self.blockchain = libbitcoin_client
receipt_json = {
"buyer_receipt": {
"receipt": {
"ref_hash": digest(json.dumps(self.contract, indent=4)).encode("hex"),
"listing": {
"received": received,
"listing_hash": self.contract["buyer_order"]["order"]["ref_hash"]
},
"dispute": {
"dispute": dispute
}
}
}
}
if None not in (feedback, quality, description, delivery_time, customer_service):
receipt_json["buyer_receipt"]["receipt"]["rating"] = {}
receipt_json["buyer_receipt"]["receipt"]["rating"]["feedback"] = feedback
receipt_json["buyer_receipt"]["receipt"]["rating"]["quality"] = quality
receipt_json["buyer_receipt"]["receipt"]["rating"]["description"] = description
receipt_json["buyer_receipt"]["receipt"]["rating"]["delivery_time"] = delivery_time
receipt_json["buyer_receipt"]["receipt"]["rating"]["customer_service"] = customer_service
receipt_json["buyer_receipt"]["receipt"]["rating"]["review"] = review
if payout:
order_id = self.contract["vendor_order_confirmation"]["invoice"]["ref_hash"]
outpoints = pickle.loads(self.db.Purchases().get_outpoint(order_id))
payout_address = self.contract["vendor_order_confirmation"]["invoice"]["payout"]["address"]
redeem_script = str(self.contract["buyer_order"]["order"]["payment"]["redeem_script"])
for output in outpoints:
del output["value"]
value = self.contract["vendor_order_confirmation"]["invoice"]["payout"]["value"]
outs = [{'value': value, 'address': payout_address}]
tx = bitcoin.mktx(outpoints, outs)
signatures = []
chaincode = self.contract["buyer_order"]["order"]["payment"]["chaincode"]
masterkey_b = bitcoin.bip32_extract_key(self.keychain.bitcoin_master_privkey)
buyer_priv = derive_childkey(masterkey_b, chaincode, bitcoin.MAINNET_PRIVATE)
masterkey_v = self.contract["vendor_offer"]["listing"]["id"]["pubkeys"]["bitcoin"]
vendor_key = derive_childkey(masterkey_v, chaincode)
valid_inputs = 0
for index in range(0, len(outpoints)):
sig = bitcoin.multisign(tx, index, redeem_script, buyer_priv)
signatures.append({"input_index": index, "signature": sig})
for s in self.contract["vendor_order_confirmation"]["invoice"]["payout"]["signature(s)"]:
if s["input_index"] == index:
if bitcoin.verify_tx_input(tx, index, redeem_script, s["signature"], vendor_key):
tx = bitcoin.apply_multisignatures(tx, index, str(redeem_script),
sig, str(s["signature"]))
valid_inputs += 1
receipt_json["buyer_receipt"]["receipt"]["payout"] = {}
if valid_inputs == len(outpoints):
self.log.info("Broadcasting payout tx %s to network" % bitcoin.txhash(tx))
self.blockchain.broadcast(tx)
receipt_json["buyer_receipt"]["receipt"]["payout"]["txid"] = bitcoin.txhash(tx)
receipt_json["buyer_receipt"]["receipt"]["payout"]["signature(s)"] = signatures
receipt_json["buyer_receipt"]["receipt"]["payout"]["value"] = value
if claim:
receipt_json["buyer_receipt"]["receipt"]["dispute"]["claim"] = claim
receipt = json.dumps(receipt_json["buyer_receipt"]["receipt"], indent=4)
receipt_json["buyer_receipt"]["signature"] = \
self.keychain.signing_key.sign(receipt, encoder=nacl.encoding.HexEncoder)[:128]
self.contract["buyer_receipt"] = receipt_json["buyer_receipt"]
