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#!/usr/bin/env python3
# Copyright (c) 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 addrman functionality"""
import os
import struct
from test_framework.messages import ser_uint256, hash256
from test_framework.p2p import MAGIC_BYTES
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
def serialize_addrman(*, format=1, lowest_compatible=3):
new = []
tried = []
INCOMPATIBILITY_BASE = 32
r = MAGIC_BYTES["regtest"]
r += struct.pack("B", format)
r += struct.pack("B", INCOMPATIBILITY_BASE + lowest_compatible)
r += ser_uint256(1)
r += struct.pack("i", len(new))
r += struct.pack("i", len(tried))
ADDRMAN_NEW_BUCKET_COUNT = 1 << 10
r += struct.pack("i", ADDRMAN_NEW_BUCKET_COUNT ^ (1 << 30))
for _ in range(ADDRMAN_NEW_BUCKET_COUNT):
r += struct.pack("i", 0)
checksum = hash256(r)
r += checksum
return r
def write_addrman(peers_dat, **kwargs):
with open(peers_dat, "wb") as f:
f.write(serialize_addrman(**kwargs))
class AddrmanTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
def run_test(self):
peers_dat = os.path.join(self.nodes[0].datadir, self.chain, "peers.dat")
self.log.info("Check that mocked addrman is valid")
self.stop_node(0)
write_addrman(peers_dat)
with self.nodes[0].assert_debug_log(["Loaded 0 addresses from peers.dat"]):
self.start_node(0, extra_args=["-checkaddrman=1"])
assert_equal(self.nodes[0].getnodeaddresses(), [])
self.log.info("Check that addrman from future cannot be read")
self.stop_node(0)
write_addrman(peers_dat, lowest_compatible=111)
with self.nodes[0].assert_debug_log([
f'ERROR: DeserializeDB: Deserialize or I/O error - Unsupported format of addrman database: 1. It is compatible with formats >=111, but the maximum supported by this version of {self.config["environment"]["PACKAGE_NAME"]} is 3.',
"Recreating peers.dat",
]):
self.start_node(0)
assert_equal(self.nodes[0].getnodeaddresses(), [])
self.log.info("Check that corrupt addrman cannot be read")
self.stop_node(0)
with open(peers_dat, "wb") as f:
f.write(serialize_addrman()[:-1])
with self.nodes[0].assert_debug_log([
"ERROR: DeserializeDB: Deserialize or I/O error - CAutoFile::read: end of file",
"Recreating peers.dat",
]):
self.start_node(0)
assert_equal(self.nodes[0].getnodeaddresses(), [])
self.log.info("Check that missing addrman is recreated")
self.stop_node(0)
os.remove(peers_dat)
with self.nodes[0].assert_debug_log([
f"Missing or invalid file {peers_dat}",
"Recreating peers.dat",
]):
self.start_node(0)
assert_equal(self.nodes[0].getnodeaddresses(), [])
if __name__ == "__main__":
AddrmanTest().main()
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