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Backport 18584 dev #4

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Backport 18584 dev #4

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Backporting Merge #18584: test: Check that the version message does n…
Apr 12, 2020
ff8b9e9
Merge #18584: test: Check that the version message does not leak the …
vijaydasmp Aug 28, 2021
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31 changes: 30 additions & 1 deletion test/functional/p2p_leak.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,11 @@
from test_framework.messages import msg_getaddr, msg_ping, msg_verack
from test_framework.mininode import mininode_lock, P2PInterface
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import wait_until
from test_framework.util import (
assert_equal,
assert_greater_than_or_equal,
wait_until,
)

banscore = 10

Expand Down Expand Up @@ -88,11 +92,24 @@ def on_version(self, message):
self.send_message(msg_ping())
self.send_message(msg_getaddr())


class P2PVersionStore(P2PInterface):
version_received = None

def on_version(self, msg):
super().on_version(msg)
self.version_received = msg


class P2PLeakTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.extra_args = [['-banscore=' + str(banscore)]]

def setup_network(self):
self.disable_mocktime()
self.setup_nodes()

def run_test(self):
no_version_bannode = self.nodes[0].add_p2p_connection(CNodeNoVersionBan(), send_version=False, wait_for_verack=False)
no_version_idlenode = self.nodes[0].add_p2p_connection(CNodeNoVersionIdle(), send_version=False, wait_for_verack=False)
Expand Down Expand Up @@ -121,6 +138,18 @@ def run_test(self):
assert(no_version_idlenode.unexpected_msg == False)
assert(no_verack_idlenode.unexpected_msg == False)

self.log.info('Check that the version message does not leak the local address of the node')
time_begin = int(time.time())
p2p_version_store = self.nodes[0].add_p2p_connection(P2PVersionStore())
time_end = time.time()
ver = p2p_version_store.version_received
assert_greater_than_or_equal(ver.nTime, time_begin)
assert_greater_than_or_equal(time_end, ver.nTime)
assert_equal(ver.addrFrom.port, 0)
assert_equal(ver.addrFrom.ip, '0.0.0.0')
assert_equal(ver.nStartingHeight, 201)
assert_equal(ver.nRelay, 1)


if __name__ == '__main__':
P2PLeakTest().main()