Differential D4012 Diff 11115 test/functional/abc-invalid-message.py

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test/functional/abc-invalid-message.py

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	import struct			import struct

	from test_framework.messages import NODE_NETWORK, msg_version			from test_framework.messages import NODE_NETWORK, msg_version
	from test_framework.mininode import (			from test_framework.mininode import (
	MAGIC_BYTES,			MAGIC_BYTES,
	mininode_lock,			mininode_lock,
	msg_ping,			msg_ping,
	network_thread_start,
	P2PInterface,			P2PInterface,
	)			)
	from test_framework.test_framework import BitcoinTestFramework			from test_framework.test_framework import BitcoinTestFramework
	from test_framework.util import wait_until			from test_framework.util import wait_until


	def msg_bad_checksum(connection, original_message):			def msg_bad_checksum(connection, original_message):
	message_data = bytearray(connection._build_message(original_message))			message_data = bytearray(connection._build_message(original_message))

	data = original_message.serialize()			data = original_message.serialize()
	i = 0			i = 0
	i += len(MAGIC_BYTES[connection.network])			i += len(MAGIC_BYTES[connection.network])
	i += 12			i += 12
	i += len(struct.pack("<I", len(data)))			i += len(struct.pack("<I", len(data)))

	# Make the checksum invalid			# Make the checksum invalid
	message_data[i] = message_data[i] ^ 0xAA			message_data[i] = message_data[i] ^ 0xAA
	return message_data			return message_data


	class BadVersionP2PInterface(P2PInterface):			class BadVersionP2PInterface(P2PInterface):
	def peer_connect(self, args, services=NODE_NETWORK, send_version=False, *kwargs):			def peer_connect(self, args, services=NODE_NETWORK, send_version=False, *kwargs):
	super().peer_connect(args, send_version=send_version, *kwargs)			create_conn = super().peer_connect(args, send_version=send_version, *kwargs)

	# Send version message with invalid checksum			# Send version message with invalid checksum
	vt = msg_version()			vt = msg_version()
	vt.nServices = services			vt.nServices = services
	vt.addrTo.ip = self.dstaddr			vt.addrTo.ip = self.dstaddr
	vt.addrTo.port = self.dstport			vt.addrTo.port = self.dstport
	vt.addrFrom.ip = "0.0.0.0"			vt.addrFrom.ip = "0.0.0.0"
	vt.addrFrom.port = 0			vt.addrFrom.port = 0
	invalid_vt = msg_bad_checksum(self, vt)			invalid_vt = msg_bad_checksum(self, vt)
	# Will be sent right after handle_connect			# Will be sent right after connection_made
	self.sendbuf = invalid_vt			self.on_connection_send_msg = invalid_vt
				self.on_connection_send_msg_is_raw = True

				return create_conn


	class InvalidMessageTest(BitcoinTestFramework):			class InvalidMessageTest(BitcoinTestFramework):
	def set_test_params(self):			def set_test_params(self):
	self.setup_clean_chain = False			self.setup_clean_chain = False
	self.num_nodes = 2			self.num_nodes = 2

	def run_test(self):			def run_test(self):
	# Try to connect to a node using an invalid checksum on version message			# Try to connect to a node using an invalid checksum on version message
	bad_interface = BadVersionP2PInterface()			bad_interface = BadVersionP2PInterface()
	self.nodes[0].add_p2p_connection(bad_interface)			self.nodes[0].add_p2p_connection(bad_interface)

	# Also connect to a node with a valid version message			# Also connect to a node with a valid version message
	interface = P2PInterface()			interface = P2PInterface()
	connection = self.nodes[1].add_p2p_connection(interface)			connection = self.nodes[1].add_p2p_connection(interface)

	network_thread_start()

	# The invalid version message should cause a disconnect on the first			# The invalid version message should cause a disconnect on the first
	# connection because we are now banned			# connection because we are now banned
	bad_interface.wait_for_disconnect()			bad_interface.wait_for_disconnect()

	# Node with valid version message should connect successfully			# Node with valid version message should connect successfully
	connection.wait_for_verack()			connection.wait_for_verack()

	# Create a valid message			# Create a valid message
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