mirror of https://github.com/bitcoin/bitcoin
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
145 lines
6.1 KiB
145 lines
6.1 KiB
#!/usr/bin/env python3
|
|
# Copyright (c) 2020-2021 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 block-relay-only anchors functionality"""
|
|
|
|
import os
|
|
|
|
from test_framework.p2p import P2PInterface, P2P_SERVICES
|
|
from test_framework.socks5 import Socks5Configuration, Socks5Server
|
|
from test_framework.messages import CAddress, hash256
|
|
from test_framework.test_framework import BitcoinTestFramework
|
|
from test_framework.util import check_node_connections, assert_equal, p2p_port
|
|
|
|
INBOUND_CONNECTIONS = 5
|
|
BLOCK_RELAY_CONNECTIONS = 2
|
|
ONION_ADDR = "pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion:8333"
|
|
|
|
|
|
class AnchorsTest(BitcoinTestFramework):
|
|
def set_test_params(self):
|
|
self.num_nodes = 1
|
|
self.disable_autoconnect = False
|
|
|
|
def run_test(self):
|
|
node_anchors_path = self.nodes[0].chain_path / "anchors.dat"
|
|
|
|
self.log.info("When node starts, check if anchors.dat doesn't exist")
|
|
assert not os.path.exists(node_anchors_path)
|
|
|
|
self.log.info(f"Add {BLOCK_RELAY_CONNECTIONS} block-relay-only connections to node")
|
|
for i in range(BLOCK_RELAY_CONNECTIONS):
|
|
self.log.debug(f"block-relay-only: {i}")
|
|
self.nodes[0].add_outbound_p2p_connection(
|
|
P2PInterface(), p2p_idx=i, connection_type="block-relay-only"
|
|
)
|
|
|
|
self.log.info(f"Add {INBOUND_CONNECTIONS} inbound connections to node")
|
|
for i in range(INBOUND_CONNECTIONS):
|
|
self.log.debug(f"inbound: {i}")
|
|
self.nodes[0].add_p2p_connection(P2PInterface())
|
|
|
|
self.log.info("Check node connections")
|
|
check_node_connections(node=self.nodes[0], num_in=5, num_out=2)
|
|
|
|
# 127.0.0.1
|
|
ip = "7f000001"
|
|
|
|
# Since the ip is always 127.0.0.1 for this case,
|
|
# we store only the port to identify the peers
|
|
block_relay_nodes_port = []
|
|
inbound_nodes_port = []
|
|
for p in self.nodes[0].getpeerinfo():
|
|
addr_split = p["addr"].split(":")
|
|
if p["connection_type"] == "block-relay-only":
|
|
block_relay_nodes_port.append(hex(int(addr_split[1]))[2:])
|
|
else:
|
|
inbound_nodes_port.append(hex(int(addr_split[1]))[2:])
|
|
|
|
self.log.debug("Stop node")
|
|
self.stop_node(0)
|
|
|
|
# It should contain only the block-relay-only addresses
|
|
self.log.info("Check the addresses in anchors.dat")
|
|
|
|
with open(node_anchors_path, "rb") as file_handler:
|
|
anchors = file_handler.read()
|
|
|
|
anchors_hex = anchors.hex()
|
|
for port in block_relay_nodes_port:
|
|
ip_port = ip + port
|
|
assert ip_port in anchors_hex
|
|
for port in inbound_nodes_port:
|
|
ip_port = ip + port
|
|
assert ip_port not in anchors_hex
|
|
|
|
self.log.info("Perturb anchors.dat to test it doesn't throw an error during initialization")
|
|
with self.nodes[0].assert_debug_log(["0 block-relay-only anchors will be tried for connections."]):
|
|
with open(node_anchors_path, "wb") as out_file_handler:
|
|
tweaked_contents = bytearray(anchors)
|
|
tweaked_contents[20:20] = b'1'
|
|
out_file_handler.write(bytes(tweaked_contents))
|
|
|
|
self.log.debug("Start node")
|
|
self.start_node(0)
|
|
|
|
self.log.info("When node starts, check if anchors.dat doesn't exist anymore")
|
|
assert not os.path.exists(node_anchors_path)
|
|
|
|
self.log.info("Ensure addrv2 support")
|
|
# Use proxies to catch outbound connections to networks with 256-bit addresses
|
|
onion_conf = Socks5Configuration()
|
|
onion_conf.auth = True
|
|
onion_conf.unauth = True
|
|
onion_conf.addr = ('127.0.0.1', p2p_port(self.num_nodes))
|
|
onion_conf.keep_alive = True
|
|
onion_proxy = Socks5Server(onion_conf)
|
|
onion_proxy.start()
|
|
self.restart_node(0, extra_args=[f"-onion={onion_conf.addr[0]}:{onion_conf.addr[1]}"])
|
|
|
|
self.log.info("Add 256-bit-address block-relay-only connections to node")
|
|
self.nodes[0].addconnection(ONION_ADDR, 'block-relay-only', v2transport=False)
|
|
|
|
self.log.debug("Stop node")
|
|
with self.nodes[0].assert_debug_log([f"DumpAnchors: Flush 1 outbound block-relay-only peer addresses to anchors.dat"]):
|
|
self.stop_node(0)
|
|
# Manually close keep_alive proxy connection
|
|
onion_proxy.stop()
|
|
|
|
self.log.info("Check for addrv2 addresses in anchors.dat")
|
|
caddr = CAddress()
|
|
caddr.net = CAddress.NET_TORV3
|
|
caddr.ip, port_str = ONION_ADDR.split(":")
|
|
caddr.port = int(port_str)
|
|
# TorV3 addrv2 serialization:
|
|
# time(4) | services(1) | networkID(1) | address length(1) | address(32)
|
|
expected_pubkey = caddr.serialize_v2()[7:39].hex()
|
|
|
|
# position of services byte of first addr in anchors.dat
|
|
# network magic, vector length, version, nTime
|
|
services_index = 4 + 1 + 4 + 4
|
|
data = bytes()
|
|
with open(node_anchors_path, "rb") as file_handler:
|
|
data = file_handler.read()
|
|
assert_equal(data[services_index], 0x00) # services == NONE
|
|
anchors2 = data.hex()
|
|
assert expected_pubkey in anchors2
|
|
|
|
with open(node_anchors_path, "wb") as file_handler:
|
|
# Modify service flags for this address even though we never connected to it.
|
|
# This is necessary because on restart we will not attempt an anchor connection
|
|
# to a host without our required services, even if its address is in the anchors.dat file
|
|
new_data = bytearray(data)[:-32]
|
|
new_data[services_index] = P2P_SERVICES
|
|
new_data_hash = hash256(new_data)
|
|
file_handler.write(new_data + new_data_hash)
|
|
|
|
self.log.info("Restarting node attempts to reconnect to anchors")
|
|
with self.nodes[0].assert_debug_log([f"Trying to make an anchor connection to {ONION_ADDR}"]):
|
|
self.start_node(0, extra_args=[f"-onion={onion_conf.addr[0]}:{onion_conf.addr[1]}"])
|
|
|
|
|
|
if __name__ == "__main__":
|
|
AnchorsTest(__file__).main()
|