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#!/usr/bin/env python3
# Copyright (c) 2015-2022 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 p2p permission message.
Test that permissions are correctly calculated and applied
"""
from test_framework.messages import (
SEQUENCE_FINAL,
)
from test_framework.p2p import P2PDataStore
from test_framework.test_node import ErrorMatch
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
append_config,
assert_equal,
p2p_port,
tor_port,
)
from test_framework.wallet import MiniWallet
class P2PPermissionsTests(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 2
def run_test(self):
self.wallet = MiniWallet(self.nodes[0])
self.check_tx_relay()
self.checkpermission(
# default permissions (no specific permissions)
["-whitelist=127.0.0.1"],
# Make sure the default values in the command line documentation match the ones here
["relay", "noban", "mempool", "download"])
self.checkpermission(
# no permission (even with forcerelay)
["-whitelist=@127.0.0.1", "-whitelistforcerelay=1"],
[])
self.checkpermission(
# relay permission removed (no specific permissions)
["-whitelist=127.0.0.1", "-whitelistrelay=0"],
["noban", "mempool", "download"])
self.checkpermission(
# forcerelay and relay permission added
# Legacy parameter interaction which set whitelistrelay to true
# if whitelistforcerelay is true
["-whitelist=127.0.0.1", "-whitelistforcerelay"],
["forcerelay", "relay", "noban", "mempool", "download"])
# Let's make sure permissions are merged correctly
# For this, we need to use whitebind instead of bind
# by modifying the configuration file.
ip_port = "127.0.0.1:{}".format(p2p_port(1))
self.nodes[1].replace_in_config([("bind=127.0.0.1", "whitebind=bloomfilter,forcerelay@" + ip_port)])
# Explicitly bind the tor port to prevent collisions with the default tor port
append_config(self.nodes[1].datadir_path, [f"bind=127.0.0.1:{tor_port(self.nodes[1].index)}=onion"])
self.checkpermission(
["-whitelist=noban@127.0.0.1"],
# Check parameter interaction forcerelay should activate relay
["noban", "bloomfilter", "forcerelay", "relay", "download"])
self.nodes[1].replace_in_config([("whitebind=bloomfilter,forcerelay@" + ip_port, "bind=127.0.0.1")])
self.nodes[1].replace_in_config([(f"bind=127.0.0.1:{tor_port(self.nodes[1].index)}=onion", "")])
self.checkpermission(
# legacy whitelistrelay should be ignored
["-whitelist=noban,mempool@127.0.0.1", "-whitelistrelay"],
["noban", "mempool", "download"])
self.checkpermission(
# legacy whitelistforcerelay should be ignored
["-whitelist=noban,mempool@127.0.0.1", "-whitelistforcerelay"],
["noban", "mempool", "download"])
self.checkpermission(
# missing mempool permission to be considered legacy whitelisted
["-whitelist=noban@127.0.0.1"],
["noban", "download"])
self.checkpermission(
# all permission added
["-whitelist=all@127.0.0.1"],
["forcerelay", "noban", "mempool", "bloomfilter", "relay", "download", "addr"])
for flag, permissions in [(["-whitelist=noban,out@127.0.0.1"], ["noban", "download"]), (["-whitelist=noban@127.0.0.1"], [])]:
self.restart_node(0, flag)
self.connect_nodes(0, 1)
peerinfo = self.nodes[0].getpeerinfo()[0]
assert_equal(peerinfo['permissions'], permissions)
self.stop_node(1)
self.nodes[1].assert_start_raises_init_error(["-whitelist=in,out@127.0.0.1"], "Only direction was set, no permissions", match=ErrorMatch.PARTIAL_REGEX)
self.nodes[1].assert_start_raises_init_error(["-whitelist=oopsie@127.0.0.1"], "Invalid P2P permission", match=ErrorMatch.PARTIAL_REGEX)
self.nodes[1].assert_start_raises_init_error(["-whitelist=noban@127.0.0.1:230"], "Invalid netmask specified in", match=ErrorMatch.PARTIAL_REGEX)
self.nodes[1].assert_start_raises_init_error(["-whitebind=noban@127.0.0.1/10"], "Cannot resolve -whitebind address", match=ErrorMatch.PARTIAL_REGEX)
self.nodes[1].assert_start_raises_init_error(["-whitebind=noban@127.0.0.1", "-bind=127.0.0.1", "-listen=0"], "Cannot set -bind or -whitebind together with -listen=0", match=ErrorMatch.PARTIAL_REGEX)
def check_tx_relay(self):
self.log.debug("Create a connection from a forcerelay peer that rebroadcasts raw txs")
# A test framework p2p connection is needed to send the raw transaction directly. If a full node was used, it could only
# rebroadcast via the inv-getdata mechanism. However, even for forcerelay connections, a full node would
# currently not request a txid that is already in the mempool.
self.restart_node(1, extra_args=["-whitelist=forcerelay@127.0.0.1"])
p2p_rebroadcast_wallet = self.nodes[1].add_p2p_connection(P2PDataStore())
self.log.debug("Send a tx from the wallet initially")
tx = self.wallet.create_self_transfer(sequence=SEQUENCE_FINAL)['tx']
txid = tx.rehash()
self.log.debug("Wait until tx is in node[1]'s mempool")
p2p_rebroadcast_wallet.send_txs_and_test([tx], self.nodes[1])
self.log.debug("Check that node[1] will send the tx to node[0] even though it is already in the mempool")
self.connect_nodes(1, 0)
with self.nodes[1].assert_debug_log(["Force relaying tx {} (wtxid={}) from peer=0".format(txid, tx.getwtxid())]):
p2p_rebroadcast_wallet.send_txs_and_test([tx], self.nodes[1])
self.wait_until(lambda: txid in self.nodes[0].getrawmempool())
self.log.debug("Check that node[1] will not send an invalid tx to node[0]")
tx.vout[0].nValue += 1
# add dust to cause policy rejection but no disconnection
tx.vout.append(tx.vout[0])
tx.vout[-1].nValue = 0
txid = tx.rehash()
# Send the transaction twice. The first time, it'll be rejected by ATMP because it conflicts
# with a mempool transaction. The second time, it'll be in the m_lazy_recent_rejects filter.
p2p_rebroadcast_wallet.send_txs_and_test(
[tx],
self.nodes[1],
success=False,
reject_reason='{} (wtxid={}) from peer=0 was not accepted: dust'.format(txid, tx.getwtxid())
)
p2p_rebroadcast_wallet.send_txs_and_test(
[tx],
self.nodes[1],
success=False,
reject_reason='Not relaying non-mempool transaction {} (wtxid={}) from forcerelay peer=0'.format(txid, tx.getwtxid())
)
def checkpermission(self, args, expectedPermissions):
self.restart_node(1, args)
self.connect_nodes(0, 1)
peerinfo = self.nodes[1].getpeerinfo()[0]
assert_equal(len(expectedPermissions), len(peerinfo['permissions']))
for p in expectedPermissions:
if p not in peerinfo['permissions']:
raise AssertionError("Expected permissions %r is not granted." % p)
if __name__ == '__main__':
P2PPermissionsTests(__file__).main()
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