From fa78a2fc670d7162d6ba6d432188da6d6e5288ac Mon Sep 17 00:00:00 2001 From: MarcoFalke Date: Sat, 15 Sep 2018 20:01:20 -0400 Subject: [tests] Test that nodes respond to getdata with notfound If a node has not announced a tx at all, then it should respond to getdata messages for that tx with notfound, to avoid leaking tx origination privacy. --- test/functional/p2p_leak_tx.py | 57 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100755 test/functional/p2p_leak_tx.py (limited to 'test/functional/p2p_leak_tx.py') diff --git a/test/functional/p2p_leak_tx.py b/test/functional/p2p_leak_tx.py new file mode 100755 index 0000000000..dc4d475b2d --- /dev/null +++ b/test/functional/p2p_leak_tx.py @@ -0,0 +1,57 @@ +#!/usr/bin/env python3 +# Copyright (c) 2017-2018 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 that we don't leak txs to inbound peers that we haven't yet announced to""" + +from test_framework.messages import msg_getdata, CInv +from test_framework.mininode import P2PDataStore +from test_framework.test_framework import BitcoinTestFramework +from test_framework.util import ( + assert_equal, +) + + +class P2PNode(P2PDataStore): + def on_inv(self, msg): + pass + + +class P2PLeakTxTest(BitcoinTestFramework): + def set_test_params(self): + self.num_nodes = 1 + + def skip_test_if_missing_module(self): + self.skip_if_no_wallet() + + def run_test(self): + gen_node = self.nodes[0] # The block and tx generating node + gen_node.generate(1) + + inbound_peer = self.nodes[0].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 = gen_node.sendtoaddress(gen_node.getnewaddress(), 0.01) + + want_tx = msg_getdata() + want_tx.inv.append(CInv(t=1, h=int(txid, 16))) + inbound_peer.last_message.pop('notfound', None) + inbound_peer.send_message(want_tx) + inbound_peer.sync_with_ping() + + 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)) + 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() -- cgit v1.2.3