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#!/usr/bin/env python3
# Copyright (c) 2014-2022 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 node disconnect and ban behavior"""
import time
from pathlib import Path
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
)
class DisconnectBanTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 2
self.supports_cli = False
def run_test(self):
self.log.info("Connect nodes both way")
# By default, the test framework sets up an addnode connection from
# node 1 --> node0. By connecting node0 --> node 1, we're left with
# the two nodes being connected both ways.
# Topology will look like: node0 <--> node1
self.connect_nodes(0, 1)
self.log.info("Test setban and listbanned RPCs")
self.log.info("setban: successfully ban single IP address")
assert_equal(len(self.nodes[1].getpeerinfo()), 2) # node1 should have 2 connections to node0 at this point
self.nodes[1].setban(subnet="127.0.0.1", command="add")
self.wait_until(lambda: len(self.nodes[1].getpeerinfo()) == 0, timeout=10)
assert_equal(len(self.nodes[1].getpeerinfo()), 0) # all nodes must be disconnected at this point
assert_equal(len(self.nodes[1].listbanned()), 1)
self.log.info("clearbanned: successfully clear ban list")
self.nodes[1].clearbanned()
assert_equal(len(self.nodes[1].listbanned()), 0)
self.log.info('Test banlist database recreation')
self.stop_node(1)
target_file = self.nodes[1].chain_path / "banlist.json"
Path.unlink(target_file)
with self.nodes[1].assert_debug_log(["Recreating the banlist database"]):
self.start_node(1)
assert Path.exists(target_file)
assert_equal(self.nodes[1].listbanned(), [])
self.nodes[1].setban("127.0.0.0/24", "add")
self.log.info("setban: fail to ban an already banned subnet")
assert_equal(len(self.nodes[1].listbanned()), 1)
assert_raises_rpc_error(-23, "IP/Subnet already banned", self.nodes[1].setban, "127.0.0.1", "add")
self.log.info("setban: fail to ban an invalid subnet")
assert_raises_rpc_error(-30, "Error: Invalid IP/Subnet", self.nodes[1].setban, "127.0.0.1/42", "add")
assert_equal(len(self.nodes[1].listbanned()), 1) # still only one banned ip because 127.0.0.1 is within the range of 127.0.0.0/24
self.log.info("setban: fail to ban with past absolute timestamp")
assert_raises_rpc_error(-8, "Error: Absolute timestamp is in the past", self.nodes[1].setban, "127.27.0.1", "add", 123, True)
self.log.info("setban remove: fail to unban a non-banned subnet")
assert_raises_rpc_error(-30, "Error: Unban failed", self.nodes[1].setban, "127.0.0.1", "remove")
assert_equal(len(self.nodes[1].listbanned()), 1)
self.log.info("setban remove: successfully unban subnet")
self.nodes[1].setban("127.0.0.0/24", "remove")
assert_equal(len(self.nodes[1].listbanned()), 0)
self.nodes[1].clearbanned()
assert_equal(len(self.nodes[1].listbanned()), 0)
self.log.info("setban: test persistence across node restart")
# Set the mocktime so we can control when bans expire
old_time = int(time.time())
self.nodes[1].setmocktime(old_time)
self.nodes[1].setban("127.0.0.0/32", "add")
self.nodes[1].setban("127.0.0.0/24", "add")
self.nodes[1].setban("192.168.0.1", "add", 1) # ban for 1 seconds
self.nodes[1].setban("2001:4d48:ac57:400:cacf:e9ff:fe1d:9c63/19", "add", 1000) # ban for 1000 seconds
listBeforeShutdown = self.nodes[1].listbanned()
assert_equal("192.168.0.1/32", listBeforeShutdown[2]['address'])
self.log.info("setban: test banning with absolute timestamp")
self.nodes[1].setban("192.168.0.2", "add", old_time + 120, True)
# Move time forward by 3 seconds so the third ban has expired
self.nodes[1].setmocktime(old_time + 3)
assert_equal(len(self.nodes[1].listbanned()), 4)
self.log.info("Test ban_duration and time_remaining")
for ban in self.nodes[1].listbanned():
if ban["address"] in ["127.0.0.0/32", "127.0.0.0/24"]:
assert_equal(ban["ban_duration"], 86400)
assert_equal(ban["time_remaining"], 86397)
elif ban["address"] == "2001:4d48:ac57:400:cacf:e9ff:fe1d:9c63/19":
assert_equal(ban["ban_duration"], 1000)
assert_equal(ban["time_remaining"], 997)
elif ban["address"] == "192.168.0.2/32":
assert_equal(ban["ban_duration"], 120)
assert_equal(ban["time_remaining"], 117)
self.restart_node(1)
listAfterShutdown = self.nodes[1].listbanned()
assert_equal("127.0.0.0/24", listAfterShutdown[0]['address'])
assert_equal("127.0.0.0/32", listAfterShutdown[1]['address'])
assert_equal("192.168.0.2/32", listAfterShutdown[2]['address'])
assert_equal("/19" in listAfterShutdown[3]['address'], True)
# Clear ban lists
self.nodes[1].clearbanned()
self.log.info("Connect nodes both way")
self.connect_nodes(0, 1)
self.connect_nodes(1, 0)
self.log.info("Test disconnectnode RPCs")
self.log.info("disconnectnode: fail to disconnect when calling with address and nodeid")
address1 = self.nodes[0].getpeerinfo()[0]['addr']
node1 = self.nodes[0].getpeerinfo()[0]["id"]
assert_raises_rpc_error(-32602, "Only one of address and nodeid should be provided.", self.nodes[0].disconnectnode, address=address1, nodeid=node1)
self.log.info("disconnectnode: fail to disconnect when calling with junk address")
assert_raises_rpc_error(-29, "Node not found in connected nodes", self.nodes[0].disconnectnode, address="221B Baker Street")
self.log.info("disconnectnode: successfully disconnect node by address")
address1 = self.nodes[0].getpeerinfo()[0]['addr']
self.nodes[0].disconnectnode(address=address1)
self.wait_until(lambda: len(self.nodes[1].getpeerinfo()) == 1, timeout=10)
assert not [node for node in self.nodes[0].getpeerinfo() if node['addr'] == address1]
self.log.info("disconnectnode: successfully reconnect node")
self.connect_nodes(0, 1) # reconnect the node
assert_equal(len(self.nodes[0].getpeerinfo()), 2)
assert [node for node in self.nodes[0].getpeerinfo() if node['addr'] == address1]
self.log.info("disconnectnode: successfully disconnect node by node id")
id1 = self.nodes[0].getpeerinfo()[0]['id']
self.nodes[0].disconnectnode(nodeid=id1)
self.wait_until(lambda: len(self.nodes[1].getpeerinfo()) == 1, timeout=10)
assert not [node for node in self.nodes[0].getpeerinfo() if node['id'] == id1]
if __name__ == '__main__':
DisconnectBanTest().main()
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