You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
191 lines
7.6 KiB
191 lines
7.6 KiB
#!/usr/bin/env python3
|
|
# Copyright (c) 2014-2016 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 logic for skipping signature validation on old blocks.
|
|
|
|
Test logic for skipping signature validation on blocks which we've assumed
|
|
valid (https://github.com/bitcoin/bitcoin/pull/9484)
|
|
|
|
We build a chain that includes and invalid signature for one of the
|
|
transactions:
|
|
|
|
0: genesis block
|
|
1: block 1 with coinbase transaction output.
|
|
2-101: bury that block with 100 blocks so the coinbase transaction
|
|
output can be spent
|
|
102: a block containing a transaction spending the coinbase
|
|
transaction output. The transaction has an invalid signature.
|
|
103-2202: bury the bad block with just over two weeks' worth of blocks
|
|
(2100 blocks)
|
|
|
|
Start three nodes:
|
|
|
|
- node0 has no -assumevalid parameter. Try to sync to block 2202. It will
|
|
reject block 102 and only sync as far as block 101
|
|
- node1 has -assumevalid set to the hash of block 102. Try to sync to
|
|
block 2202. node1 will sync all the way to block 2202.
|
|
- node2 has -assumevalid set to the hash of block 102. Try to sync to
|
|
block 200. node2 will reject block 102 since it's assumed valid, but it
|
|
isn't buried by at least two weeks' work.
|
|
"""
|
|
|
|
from test_framework.mininode import *
|
|
from test_framework.test_framework import BitcoinTestFramework
|
|
from test_framework.util import *
|
|
from test_framework.blocktools import create_block, create_coinbase
|
|
from test_framework.key import CECKey
|
|
from test_framework.script import *
|
|
|
|
class BaseNode(SingleNodeConnCB):
|
|
def __init__(self):
|
|
SingleNodeConnCB.__init__(self)
|
|
self.last_inv = None
|
|
self.last_headers = None
|
|
self.last_block = None
|
|
self.last_getdata = None
|
|
self.block_announced = False
|
|
self.last_getheaders = None
|
|
self.disconnected = False
|
|
self.last_blockhash_announced = None
|
|
|
|
def on_close(self, conn):
|
|
self.disconnected = True
|
|
|
|
def wait_for_disconnect(self, timeout=60):
|
|
test_function = lambda: self.disconnected
|
|
assert(wait_until(test_function, timeout=timeout))
|
|
return
|
|
|
|
def send_header_for_blocks(self, new_blocks):
|
|
headers_message = msg_headers()
|
|
headers_message.headers = [ CBlockHeader(b) for b in new_blocks ]
|
|
self.send_message(headers_message)
|
|
|
|
class SendHeadersTest(BitcoinTestFramework):
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.setup_clean_chain = True
|
|
self.num_nodes = 3
|
|
|
|
def setup_network(self):
|
|
# Start node0. We don't start the other nodes yet since
|
|
# we need to pre-mine a block with an invalid transaction
|
|
# signature so we can pass in the block hash as assumevalid.
|
|
self.nodes = []
|
|
self.nodes.append(start_node(0, self.options.tmpdir, ["-debug"]))
|
|
|
|
def run_test(self):
|
|
|
|
# Connect to node0
|
|
node0 = BaseNode()
|
|
connections = []
|
|
connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], node0))
|
|
node0.add_connection(connections[0])
|
|
|
|
NetworkThread().start() # Start up network handling in another thread
|
|
node0.wait_for_verack()
|
|
|
|
# Build the blockchain
|
|
self.tip = int(self.nodes[0].getbestblockhash(), 16)
|
|
self.block_time = self.nodes[0].getblock(self.nodes[0].getbestblockhash())['time'] + 1
|
|
|
|
self.blocks = []
|
|
|
|
# Get a pubkey for the coinbase TXO
|
|
coinbase_key = CECKey()
|
|
coinbase_key.set_secretbytes(b"horsebattery")
|
|
coinbase_pubkey = coinbase_key.get_pubkey()
|
|
|
|
# Create the first block with a coinbase output to our key
|
|
height = 1
|
|
block = create_block(self.tip, create_coinbase(height, coinbase_pubkey), self.block_time)
|
|
self.blocks.append(block)
|
|
self.block_time += 1
|
|
block.solve()
|
|
# Save the coinbase for later
|
|
self.block1 = block
|
|
self.tip = block.sha256
|
|
height += 1
|
|
|
|
# Bury the block 100 deep so the coinbase output is spendable
|
|
for i in range(100):
|
|
block = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
block.solve()
|
|
self.blocks.append(block)
|
|
self.tip = block.sha256
|
|
self.block_time += 1
|
|
height += 1
|
|
|
|
# Create a transaction spending the coinbase output with an invalid (null) signature
|
|
tx = CTransaction()
|
|
tx.vin.append(CTxIn(COutPoint(self.block1.vtx[0].sha256, 0), scriptSig=b""))
|
|
tx.vout.append(CTxOut(49*100000000, CScript([OP_TRUE])))
|
|
tx.calc_sha256()
|
|
|
|
block102 = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
self.block_time += 1
|
|
block102.vtx.extend([tx])
|
|
block102.hashMerkleRoot = block102.calc_merkle_root()
|
|
block102.rehash()
|
|
block102.solve()
|
|
self.blocks.append(block102)
|
|
self.tip = block102.sha256
|
|
self.block_time += 1
|
|
height += 1
|
|
|
|
# Bury the assumed valid block 2100 deep
|
|
for i in range(2100):
|
|
block = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
block.nVersion = 4
|
|
block.solve()
|
|
self.blocks.append(block)
|
|
self.tip = block.sha256
|
|
self.block_time += 1
|
|
height += 1
|
|
|
|
# Start node1 and node2 with assumevalid so they accept a block with a bad signature.
|
|
self.nodes.append(start_node(1, self.options.tmpdir,
|
|
["-debug", "-assumevalid=" + hex(block102.sha256)]))
|
|
node1 = BaseNode() # connects to node1
|
|
connections.append(NodeConn('127.0.0.1', p2p_port(1), self.nodes[1], node1))
|
|
node1.add_connection(connections[1])
|
|
node1.wait_for_verack()
|
|
|
|
self.nodes.append(start_node(2, self.options.tmpdir,
|
|
["-debug", "-assumevalid=" + hex(block102.sha256)]))
|
|
node2 = BaseNode() # connects to node2
|
|
connections.append(NodeConn('127.0.0.1', p2p_port(2), self.nodes[2], node2))
|
|
node2.add_connection(connections[2])
|
|
node2.wait_for_verack()
|
|
|
|
# send header lists to all three nodes
|
|
node0.send_header_for_blocks(self.blocks[0:2000])
|
|
node0.send_header_for_blocks(self.blocks[2000:])
|
|
node1.send_header_for_blocks(self.blocks[0:2000])
|
|
node1.send_header_for_blocks(self.blocks[2000:])
|
|
node2.send_header_for_blocks(self.blocks[0:200])
|
|
|
|
# Send 102 blocks to node0. Block 102 will be rejected.
|
|
for i in range(101):
|
|
node0.send_message(msg_block(self.blocks[i]))
|
|
node0.sync_with_ping() # make sure the most recent block is synced
|
|
node0.send_message(msg_block(self.blocks[101]))
|
|
assert_equal(self.nodes[0].getblock(self.nodes[0].getbestblockhash())['height'], 101)
|
|
|
|
# Send 3102 blocks to node1. All blocks will be accepted.
|
|
for i in range(2202):
|
|
node1.send_message(msg_block(self.blocks[i]))
|
|
node1.sync_with_ping() # make sure the most recent block is synced
|
|
assert_equal(self.nodes[1].getblock(self.nodes[1].getbestblockhash())['height'], 2202)
|
|
|
|
# Send 102 blocks to node2. Block 102 will be rejected.
|
|
for i in range(101):
|
|
node2.send_message(msg_block(self.blocks[i]))
|
|
node2.sync_with_ping() # make sure the most recent block is synced
|
|
node2.send_message(msg_block(self.blocks[101]))
|
|
assert_equal(self.nodes[2].getblock(self.nodes[2].getbestblockhash())['height'], 101)
|
|
|
|
if __name__ == '__main__':
|
|
SendHeadersTest().main()
|