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p2p_permissions.py
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p2p_permissions.py
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#!/usr/bin/env python3
# Copyright (c) 2015-2020 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.address import ADDRESS_BCRT1_P2WSH_OP_TRUE
from test_framework.messages import (
CTransaction,
CTxInWitness,
FromHex,
)
from test_framework.mininode import P2PDataStore
from test_framework.script import (
CScript,
OP_TRUE,
)
from test_framework.test_node import ErrorMatch
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
connect_nodes,
p2p_port,
wait_until,
)
class P2PPermissionsTests(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 2
self.setup_clean_chain = True
def run_test(self):
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"],
True)
self.checkpermission(
# no permission (even with forcerelay)
["-whitelist=@127.0.0.1", "-whitelistforcerelay=1"],
[],
False)
self.checkpermission(
# relay permission removed (no specific permissions)
["-whitelist=127.0.0.1", "-whitelistrelay=0"],
["noban", "mempool", "download"],
True)
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"],
True)
# 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.replaceinconfig(1, "bind=127.0.0.1", "whitebind=bloomfilter,forcerelay@" + ip_port)
self.checkpermission(
["-whitelist=noban@127.0.0.1"],
# Check parameter interaction forcerelay should activate relay
["noban", "bloomfilter", "forcerelay", "relay", "download"],
False)
self.replaceinconfig(1, "whitebind=bloomfilter,forcerelay@" + ip_port, "bind=127.0.0.1")
self.checkpermission(
# legacy whitelistrelay should be ignored
["-whitelist=noban,mempool@127.0.0.1", "-whitelistrelay"],
["noban", "mempool", "download"],
False)
self.checkpermission(
# legacy whitelistforcerelay should be ignored
["-whitelist=noban,mempool@127.0.0.1", "-whitelistforcerelay"],
["noban", "mempool", "download"],
False)
self.checkpermission(
# missing mempool permission to be considered legacy whitelisted
["-whitelist=noban@127.0.0.1"],
["noban", "download"],
False)
self.checkpermission(
# all permission added
["-whitelist=all@127.0.0.1"],
["forcerelay", "noban", "mempool", "bloomfilter", "relay", "download"],
False)
self.stop_node(1)
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)
def check_tx_relay(self):
block_op_true = self.nodes[0].getblock(self.nodes[0].generatetoaddress(100, ADDRESS_BCRT1_P2WSH_OP_TRUE)[0])
self.sync_all()
self.log.debug("Create a connection from a whitelisted wallet that rebroadcasts raw txs")
# A python mininode 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 whitelisted 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 = FromHex(
CTransaction(),
self.nodes[0].createrawtransaction(
inputs=[{
'txid': block_op_true['tx'][0],
'vout': 0,
}], outputs=[{
ADDRESS_BCRT1_P2WSH_OP_TRUE: 5,
}]),
)
tx.wit.vtxinwit = [CTxInWitness()]
tx.wit.vtxinwit[0].scriptWitness.stack = [CScript([OP_TRUE])]
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")
connect_nodes(self.nodes[1], 0)
with self.nodes[1].assert_debug_log(["Force relaying tx {} from whitelisted peer=0".format(txid)]):
p2p_rebroadcast_wallet.send_txs_and_test([tx], self.nodes[1])
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
txid = tx.rehash()
p2p_rebroadcast_wallet.send_txs_and_test(
[tx],
self.nodes[1],
success=False,
reject_reason='Not relaying non-mempool transaction {} from whitelisted peer=0'.format(txid),
)
def checkpermission(self, args, expectedPermissions, whitelisted):
self.restart_node(1, args)
connect_nodes(self.nodes[0], 1)
peerinfo = self.nodes[1].getpeerinfo()[0]
assert_equal(peerinfo['whitelisted'], whitelisted)
assert_equal(len(expectedPermissions), len(peerinfo['permissions']))
for p in expectedPermissions:
if not p in peerinfo['permissions']:
raise AssertionError("Expected permissions %r is not granted." % p)
def replaceinconfig(self, nodeid, old, new):
with open(self.nodes[nodeid].bitcoinconf, encoding="utf8") as f:
newText = f.read().replace(old, new)
with open(self.nodes[nodeid].bitcoinconf, 'w', encoding="utf8") as f:
f.write(newText)
if __name__ == '__main__':
P2PPermissionsTests().main()