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#!/usr/bin/env python3
# Copyright (c) 2017-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test transaction upload"""
from test_framework.messages import msg_getdata, CInv, MSG_TX, MSG_WTX
from test_framework.p2p import p2p_lock, P2PDataStore, P2PTxInvStore
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
)
from test_framework.wallet import MiniWallet
class P2PNode(P2PDataStore):
def on_inv(self, msg):
pass
class P2PLeakTxTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
def run_test(self):
self.gen_node = self.nodes[0] # The block and tx generating node
self.miniwallet = MiniWallet(self.gen_node)
self.test_tx_in_block()
self.test_notfound_on_replaced_tx()
self.test_notfound_on_unannounced_tx()
def test_tx_in_block(self):
self.log.info("Check that a transaction in the last block is uploaded (beneficial for compact block relay)")
inbound_peer = self.gen_node.add_p2p_connection(P2PNode())
self.log.debug("Generate transaction and block")
inbound_peer.last_message.pop("inv", None)
wtxid = self.miniwallet.send_self_transfer(from_node=self.gen_node)["wtxid"]
inbound_peer.wait_until(lambda: "inv" in inbound_peer.last_message and inbound_peer.last_message.get("inv").inv[0].hash == int(wtxid, 16))
want_tx = msg_getdata(inv=inbound_peer.last_message.get("inv").inv)
self.generate(self.gen_node, 1)
self.log.debug("Request transaction")
inbound_peer.last_message.pop("tx", None)
inbound_peer.send_and_ping(want_tx)
assert_equal(inbound_peer.last_message.get("tx").tx.getwtxid(), wtxid)
def test_notfound_on_replaced_tx(self):
self.gen_node.disconnect_p2ps()
inbound_peer = self.gen_node.add_p2p_connection(P2PTxInvStore())
self.log.info("Transaction tx_a is broadcast")
tx_a = self.miniwallet.send_self_transfer(from_node=self.gen_node)
inbound_peer.wait_for_broadcast(txns=[tx_a["wtxid"]])
tx_b = tx_a["tx"]
tx_b.vout[0].nValue -= 9000
self.gen_node.sendrawtransaction(tx_b.serialize().hex())
inbound_peer.wait_until(lambda: "tx" in inbound_peer.last_message and inbound_peer.last_message.get("tx").tx.getwtxid() == tx_b.getwtxid())
self.log.info("Re-request of tx_a after replacement is answered with notfound")
req_vec = [
CInv(t=MSG_TX, h=int(tx_a["txid"], 16)),
CInv(t=MSG_WTX, h=int(tx_a["wtxid"], 16)),
]
want_tx = msg_getdata()
want_tx.inv = req_vec
with p2p_lock:
inbound_peer.last_message.pop("notfound", None)
inbound_peer.last_message.pop("tx", None)
inbound_peer.send_and_ping(want_tx)
assert_equal(inbound_peer.last_message.get("notfound").vec, req_vec)
assert "tx" not in inbound_peer.last_message
def test_notfound_on_unannounced_tx(self):
self.log.info("Check that we don't leak txs to inbound peers that we haven't yet announced to")
self.gen_node.disconnect_p2ps()
inbound_peer = self.gen_node.add_p2p_connection(P2PNode()) # An "attacking" inbound peer
MAX_REPEATS = 100
self.log.info("Running test up to {} times.".format(MAX_REPEATS))
for i in range(MAX_REPEATS):
self.log.info('Run repeat {}'.format(i + 1))
txid = self.miniwallet.send_self_transfer(from_node=self.gen_node)["wtxid"]
want_tx = msg_getdata()
want_tx.inv.append(CInv(t=MSG_TX, h=int(txid, 16)))
with p2p_lock:
inbound_peer.last_message.pop('notfound', None)
inbound_peer.send_and_ping(want_tx)
if inbound_peer.last_message.get('notfound'):
self.log.debug('tx {} was not yet announced to us.'.format(txid))
self.log.debug("node has responded with a notfound message. End test.")
assert_equal(inbound_peer.last_message['notfound'].vec[0].hash, int(txid, 16))
with p2p_lock:
inbound_peer.last_message.pop('notfound')
break
else:
self.log.debug('tx {} was already announced to us. Try test again.'.format(txid))
assert int(txid, 16) in [inv.hash for inv in inbound_peer.last_message['inv'].inv]
if __name__ == '__main__':
P2PLeakTxTest().main()
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