164 lines
7.7 KiB
164 lines
7.7 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2017 The Bitcoin Core developers |
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# Distributed under the MIT software license, see the accompanying |
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# file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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"""Test message sending before handshake completion. |
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A node should never send anything other than VERSION/VERACK/REJECT until it's |
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received a VERACK. |
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This test connects to a node and sends it a few messages, trying to intice it |
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into sending us something it shouldn't. |
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Also test that nodes that send unsupported service bits to bitcoind are disconnected |
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and don't receive a VERACK. Unsupported service bits are currently 1 << 5 and |
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1 << 7 (until August 1st 2018).""" |
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from test_framework.mininode import * |
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from test_framework.test_framework import BitcoinTestFramework |
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from test_framework.util import * |
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banscore = 10 |
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class CLazyNode(NodeConnCB): |
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def __init__(self): |
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super().__init__() |
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self.unexpected_msg = False |
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self.ever_connected = False |
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def bad_message(self, message): |
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self.unexpected_msg = True |
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self.log.info("should not have received message: %s" % message.command) |
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def on_open(self, conn): |
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self.connected = True |
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self.ever_connected = True |
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def on_version(self, conn, message): self.bad_message(message) |
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def on_verack(self, conn, message): self.bad_message(message) |
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def on_reject(self, conn, message): self.bad_message(message) |
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def on_inv(self, conn, message): self.bad_message(message) |
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def on_addr(self, conn, message): self.bad_message(message) |
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def on_alert(self, conn, message): self.bad_message(message) |
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def on_getdata(self, conn, message): self.bad_message(message) |
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def on_getblocks(self, conn, message): self.bad_message(message) |
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def on_tx(self, conn, message): self.bad_message(message) |
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def on_block(self, conn, message): self.bad_message(message) |
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def on_getaddr(self, conn, message): self.bad_message(message) |
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def on_headers(self, conn, message): self.bad_message(message) |
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def on_getheaders(self, conn, message): self.bad_message(message) |
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def on_ping(self, conn, message): self.bad_message(message) |
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def on_mempool(self, conn): self.bad_message(message) |
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def on_pong(self, conn, message): self.bad_message(message) |
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def on_feefilter(self, conn, message): self.bad_message(message) |
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def on_sendheaders(self, conn, message): self.bad_message(message) |
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def on_sendcmpct(self, conn, message): self.bad_message(message) |
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def on_cmpctblock(self, conn, message): self.bad_message(message) |
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def on_getblocktxn(self, conn, message): self.bad_message(message) |
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def on_blocktxn(self, conn, message): self.bad_message(message) |
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# Node that never sends a version. We'll use this to send a bunch of messages |
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# anyway, and eventually get disconnected. |
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class CNodeNoVersionBan(CLazyNode): |
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# send a bunch of veracks without sending a message. This should get us disconnected. |
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# NOTE: implementation-specific check here. Remove if bitcoind ban behavior changes |
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def on_open(self, conn): |
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super().on_open(conn) |
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for i in range(banscore): |
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self.send_message(msg_verack()) |
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def on_reject(self, conn, message): pass |
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# Node that never sends a version. This one just sits idle and hopes to receive |
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# any message (it shouldn't!) |
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class CNodeNoVersionIdle(CLazyNode): |
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def __init__(self): |
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super().__init__() |
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# Node that sends a version but not a verack. |
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class CNodeNoVerackIdle(CLazyNode): |
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def __init__(self): |
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self.version_received = False |
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super().__init__() |
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def on_reject(self, conn, message): pass |
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def on_verack(self, conn, message): pass |
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# When version is received, don't reply with a verack. Instead, see if the |
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# node will give us a message that it shouldn't. This is not an exhaustive |
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# list! |
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def on_version(self, conn, message): |
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self.version_received = True |
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conn.send_message(msg_ping()) |
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conn.send_message(msg_getaddr()) |
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class P2PLeakTest(BitcoinTestFramework): |
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def set_test_params(self): |
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self.num_nodes = 1 |
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self.extra_args = [['-banscore='+str(banscore)]] |
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def run_test(self): |
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no_version_bannode = CNodeNoVersionBan() |
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no_version_idlenode = CNodeNoVersionIdle() |
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no_verack_idlenode = CNodeNoVerackIdle() |
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unsupported_service_bit5_node = CLazyNode() |
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unsupported_service_bit7_node = CLazyNode() |
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self.nodes[0].setmocktime(1501545600) # August 1st 2017 |
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connections = [] |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], no_version_bannode, send_version=False)) |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], no_version_idlenode, send_version=False)) |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], no_verack_idlenode)) |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], unsupported_service_bit5_node, services=NODE_NETWORK|NODE_UNSUPPORTED_SERVICE_BIT_5)) |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], unsupported_service_bit7_node, services=NODE_NETWORK|NODE_UNSUPPORTED_SERVICE_BIT_7)) |
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no_version_bannode.add_connection(connections[0]) |
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no_version_idlenode.add_connection(connections[1]) |
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no_verack_idlenode.add_connection(connections[2]) |
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unsupported_service_bit5_node.add_connection(connections[3]) |
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unsupported_service_bit7_node.add_connection(connections[4]) |
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NetworkThread().start() # Start up network handling in another thread |
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wait_until(lambda: no_version_bannode.ever_connected, timeout=10, lock=mininode_lock) |
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wait_until(lambda: no_version_idlenode.ever_connected, timeout=10, lock=mininode_lock) |
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wait_until(lambda: no_verack_idlenode.version_received, timeout=10, lock=mininode_lock) |
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wait_until(lambda: unsupported_service_bit5_node.ever_connected, timeout=10, lock=mininode_lock) |
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wait_until(lambda: unsupported_service_bit7_node.ever_connected, timeout=10, lock=mininode_lock) |
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# Mine a block and make sure that it's not sent to the connected nodes |
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self.nodes[0].generate(1) |
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#Give the node enough time to possibly leak out a message |
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time.sleep(5) |
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#This node should have been banned |
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assert not no_version_bannode.connected |
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# These nodes should have been disconnected |
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assert not unsupported_service_bit5_node.connected |
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assert not unsupported_service_bit7_node.connected |
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[conn.disconnect_node() for conn in connections] |
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# Make sure no unexpected messages came in |
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assert(no_version_bannode.unexpected_msg == False) |
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assert(no_version_idlenode.unexpected_msg == False) |
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assert(no_verack_idlenode.unexpected_msg == False) |
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assert not unsupported_service_bit5_node.unexpected_msg |
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assert not unsupported_service_bit7_node.unexpected_msg |
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self.log.info("Service bits 5 and 7 are allowed after August 1st 2018") |
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self.nodes[0].setmocktime(1533168000) # August 2nd 2018 |
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allowed_service_bit5_node = NodeConnCB() |
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allowed_service_bit7_node = NodeConnCB() |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], allowed_service_bit5_node, services=NODE_NETWORK|NODE_UNSUPPORTED_SERVICE_BIT_5)) |
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connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], allowed_service_bit7_node, services=NODE_NETWORK|NODE_UNSUPPORTED_SERVICE_BIT_7)) |
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allowed_service_bit5_node.add_connection(connections[5]) |
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allowed_service_bit7_node.add_connection(connections[6]) |
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wait_until(lambda: allowed_service_bit5_node.message_count["verack"], timeout=10, lock=mininode_lock) |
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wait_until(lambda: allowed_service_bit7_node.message_count["verack"], timeout=10, lock=mininode_lock) |
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if __name__ == '__main__': |
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P2PLeakTest().main()
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