p2p_leak_tx.py raw
1 #!/usr/bin/env python3
2 # Copyright (c) 2017-present The Bitcoin Core developers
3 # Distributed under the MIT software license, see the accompanying
4 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 """Test transaction upload"""
6
7 from test_framework.messages import msg_getdata, CInv, MSG_TX, MSG_WTX
8 from test_framework.p2p import p2p_lock, P2PDataStore, P2PTxInvStore
9 from test_framework.test_framework import BitcoinTestFramework
10 from test_framework.util import (
11 assert_equal,
12 )
13 from test_framework.wallet import MiniWallet
14
15 import time
16
17 class P2PNode(P2PDataStore):
18 def on_inv(self, message):
19 pass
20
21
22 class P2PLeakTxTest(BitcoinTestFramework):
23 def set_test_params(self):
24 self.num_nodes = 1
25
26 def run_test(self):
27 self.gen_node = self.nodes[0] # The block and tx generating node
28 self.miniwallet = MiniWallet(self.gen_node)
29 self.mocktime = int(time.time())
30
31 self.test_tx_in_block()
32 self.test_notfound_on_replaced_tx()
33 self.test_notfound_on_unannounced_tx()
34
35 def test_tx_in_block(self):
36 self.log.info("Check that a transaction in the last block is uploaded (beneficial for compact block relay)")
37 self.gen_node.setmocktime(self.mocktime)
38 inbound_peer = self.gen_node.add_p2p_connection(P2PNode())
39
40 self.log.debug("Generate transaction and block")
41 inbound_peer.last_message.pop("inv", None)
42
43 wtxid = self.miniwallet.send_self_transfer(from_node=self.gen_node)["wtxid"]
44 rawmp = self.gen_node.getrawmempool(False, True)
45 pi = self.gen_node.getpeerinfo()[0]
46 assert_equal(rawmp["mempool_sequence"], 2) # our tx cause mempool activity
47 assert_equal(pi["last_inv_sequence"], 1) # that is after the last inv
48 assert_equal(pi["inv_to_send"], 1) # and our tx has been queued
49 self.mocktime += 120
50 self.gen_node.setmocktime(self.mocktime)
51 inbound_peer.wait_until(lambda: "inv" in inbound_peer.last_message and inbound_peer.last_message.get("inv").inv[0].hash == int(wtxid, 16))
52
53 rawmp = self.gen_node.getrawmempool(False, True)
54 pi = self.gen_node.getpeerinfo()[0]
55 assert_equal(rawmp["mempool_sequence"], 2) # no mempool update
56 assert_equal(pi["last_inv_sequence"], 2) # announced the current mempool
57 assert_equal(pi["inv_to_send"], 0) # nothing left in the queue
58
59 want_tx = msg_getdata(inv=inbound_peer.last_message.get("inv").inv)
60 self.generate(self.gen_node, 1)
61
62 self.log.debug("Request transaction")
63 inbound_peer.last_message.pop("tx", None)
64 inbound_peer.send_and_ping(want_tx)
65 assert_equal(inbound_peer.last_message.get("tx").tx.wtxid_hex, wtxid)
66
67 def test_notfound_on_replaced_tx(self):
68 self.gen_node.disconnect_p2ps()
69 self.gen_node.setmocktime(self.mocktime)
70 inbound_peer = self.gen_node.add_p2p_connection(P2PTxInvStore())
71
72 self.log.info("Transaction tx_a is broadcast")
73 tx_a = self.miniwallet.send_self_transfer(from_node=self.gen_node)
74 self.mocktime += 120
75 self.gen_node.setmocktime(self.mocktime)
76 inbound_peer.wait_for_broadcast(txns=[tx_a["wtxid"]])
77
78 tx_b = tx_a["tx"]
79 tx_b.vout[0].nValue -= 9000
80 self.gen_node.sendrawtransaction(tx_b.serialize().hex())
81 self.mocktime += 120
82 self.gen_node.setmocktime(self.mocktime)
83 inbound_peer.wait_until(lambda: "tx" in inbound_peer.last_message and inbound_peer.last_message.get("tx").tx.wtxid_hex == tx_b.wtxid_hex)
84
85 self.log.info("Re-request of tx_a after replacement is answered with notfound")
86 req_vec = [
87 CInv(t=MSG_TX, h=int(tx_a["txid"], 16)),
88 CInv(t=MSG_WTX, h=int(tx_a["wtxid"], 16)),
89 ]
90 want_tx = msg_getdata()
91 want_tx.inv = req_vec
92 with p2p_lock:
93 inbound_peer.last_message.pop("notfound", None)
94 inbound_peer.last_message.pop("tx", None)
95 inbound_peer.send_and_ping(want_tx)
96
97 assert_equal(inbound_peer.last_message.get("notfound").vec, req_vec)
98 assert "tx" not in inbound_peer.last_message
99
100 def test_notfound_on_unannounced_tx(self):
101 self.log.info("Check that we don't leak txs to inbound peers that we haven't yet announced to")
102 self.gen_node.disconnect_p2ps()
103 inbound_peer = self.gen_node.add_p2p_connection(P2PNode()) # An "attacking" inbound peer
104
105 # Set a mock time so that time does not pass, and gen_node never announces the transaction
106 self.gen_node.setmocktime(self.mocktime)
107 wtxid = int(self.miniwallet.send_self_transfer(from_node=self.gen_node)["wtxid"], 16)
108
109 want_tx = msg_getdata()
110 want_tx.inv.append(CInv(t=MSG_WTX, h=wtxid))
111 with p2p_lock:
112 inbound_peer.last_message.pop('notfound', None)
113 inbound_peer.send_and_ping(want_tx)
114 inbound_peer.wait_until(lambda: "notfound" in inbound_peer.last_message)
115 with p2p_lock:
116 assert_equal(inbound_peer.last_message.get("notfound").vec[0].hash, wtxid)
117 inbound_peer.last_message.pop('notfound')
118
119 # Move mocktime forward and wait for the announcement.
120 inbound_peer.last_message.pop('inv', None)
121 self.mocktime += 120
122 self.gen_node.setmocktime(self.mocktime)
123 inbound_peer.wait_for_inv([CInv(t=MSG_WTX, h=wtxid)], timeout=120)
124
125 # Send the getdata again, this time the node should send us a TX message.
126 inbound_peer.last_message.pop('tx', None)
127 inbound_peer.send_and_ping(want_tx)
128 self.wait_until(lambda: "tx" in inbound_peer.last_message)
129 assert_equal(wtxid, int(inbound_peer.last_message["tx"].tx.wtxid_hex, 16))
130
131
132 if __name__ == '__main__':
133 P2PLeakTxTest(__file__).main()
134