diff options
Diffstat (limited to 'test/rpc-tests/p2p-leaktests.py')
| -rwxr-xr-x | test/rpc-tests/p2p-leaktests.py | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/test/rpc-tests/p2p-leaktests.py b/test/rpc-tests/p2p-leaktests.py new file mode 100755 index 0000000000..3a843197fb --- /dev/null +++ b/test/rpc-tests/p2p-leaktests.py @@ -0,0 +1,143 @@ +#!/usr/bin/env python3 +# Copyright (c) 2017 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 message sending before handshake completion. + +A node should never send anything other than VERSION/VERACK/REJECT until it's +received a VERACK. + +This test connects to a node and sends it a few messages, trying to intice it +into sending us something it shouldn't. +""" + +from test_framework.mininode import * +from test_framework.test_framework import BitcoinTestFramework +from test_framework.util import * + +banscore = 10 + +class CLazyNode(NodeConnCB): + def __init__(self): + self.connection = None + self.unexpected_msg = False + self.connected = False + super().__init__() + + def add_connection(self, conn): + self.connection = conn + + def send_message(self, message): + self.connection.send_message(message) + + def bad_message(self, message): + self.unexpected_msg = True + self.log.info("should not have received message: %s" % message.command) + + def on_open(self, conn): + self.connected = True + + def on_version(self, conn, message): self.bad_message(message) + def on_verack(self, conn, message): self.bad_message(message) + def on_reject(self, conn, message): self.bad_message(message) + def on_inv(self, conn, message): self.bad_message(message) + def on_addr(self, conn, message): self.bad_message(message) + def on_alert(self, conn, message): self.bad_message(message) + def on_getdata(self, conn, message): self.bad_message(message) + def on_getblocks(self, conn, message): self.bad_message(message) + def on_tx(self, conn, message): self.bad_message(message) + def on_block(self, conn, message): self.bad_message(message) + def on_getaddr(self, conn, message): self.bad_message(message) + def on_headers(self, conn, message): self.bad_message(message) + def on_getheaders(self, conn, message): self.bad_message(message) + def on_ping(self, conn, message): self.bad_message(message) + def on_mempool(self, conn): self.bad_message(message) + def on_pong(self, conn, message): self.bad_message(message) + def on_feefilter(self, conn, message): self.bad_message(message) + def on_sendheaders(self, conn, message): self.bad_message(message) + def on_sendcmpct(self, conn, message): self.bad_message(message) + def on_cmpctblock(self, conn, message): self.bad_message(message) + def on_getblocktxn(self, conn, message): self.bad_message(message) + def on_blocktxn(self, conn, message): self.bad_message(message) + +# Node that never sends a version. We'll use this to send a bunch of messages +# anyway, and eventually get disconnected. +class CNodeNoVersionBan(CLazyNode): + def __init__(self): + super().__init__() + + # send a bunch of veracks without sending a message. This should get us disconnected. + # NOTE: implementation-specific check here. Remove if bitcoind ban behavior changes + def on_open(self, conn): + super().on_open(conn) + for i in range(banscore): + self.send_message(msg_verack()) + + def on_reject(self, conn, message): pass + +# Node that never sends a version. This one just sits idle and hopes to receive +# any message (it shouldn't!) +class CNodeNoVersionIdle(CLazyNode): + def __init__(self): + super().__init__() + +# Node that sends a version but not a verack. +class CNodeNoVerackIdle(CLazyNode): + def __init__(self): + self.version_received = False + super().__init__() + + def on_reject(self, conn, message): pass + def on_verack(self, conn, message): pass + # When version is received, don't reply with a verack. Instead, see if the + # node will give us a message that it shouldn't. This is not an exhaustive + # list! + def on_version(self, conn, message): + self.version_received = True + conn.send_message(msg_ping()) + conn.send_message(msg_getaddr()) + +class P2PLeakTest(BitcoinTestFramework): + def __init__(self): + super().__init__() + self.num_nodes = 1 + def setup_network(self): + extra_args = [['-banscore='+str(banscore)] + for i in range(self.num_nodes)] + self.nodes = start_nodes(self.num_nodes, self.options.tmpdir, extra_args) + + def run_test(self): + no_version_bannode = CNodeNoVersionBan() + no_version_idlenode = CNodeNoVersionIdle() + no_verack_idlenode = CNodeNoVerackIdle() + + connections = [] + connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], no_version_bannode, send_version=False)) + connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], no_version_idlenode, send_version=False)) + connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], no_verack_idlenode)) + no_version_bannode.add_connection(connections[0]) + no_version_idlenode.add_connection(connections[1]) + no_verack_idlenode.add_connection(connections[2]) + + NetworkThread().start() # Start up network handling in another thread + + assert(wait_until(lambda: no_version_bannode.connected and no_version_idlenode.connected and no_verack_idlenode.version_received, timeout=10)) + + # Mine a block and make sure that it's not sent to the connected nodes + self.nodes[0].generate(1) + + #Give the node enough time to possibly leak out a message + time.sleep(5) + + #This node should have been banned + assert(no_version_bannode.connection.state == "closed") + + [conn.disconnect_node() for conn in connections] + + # Make sure no unexpected messages came in + assert(no_version_bannode.unexpected_msg == False) + assert(no_version_idlenode.unexpected_msg == False) + assert(no_verack_idlenode.unexpected_msg == False) + +if __name__ == '__main__': + P2PLeakTest().main() |