mirror of
https://github.com/dashpay/dash.git
synced 2024-12-26 12:32:48 +01:00
117 lines
4.2 KiB
Python
Executable File
117 lines
4.2 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# Copyright (c) 2015-2016 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 node responses to invalid blocks.
|
|
|
|
In this test we connect to one node over p2p, and test block requests:
|
|
1) Valid blocks should be requested and become chain tip.
|
|
2) Invalid block with duplicated transaction should be re-requested.
|
|
3) Invalid block with bad coinbase value should be rejected and not
|
|
re-requested.
|
|
"""
|
|
|
|
from test_framework.test_framework import ComparisonTestFramework
|
|
from test_framework.util import *
|
|
from test_framework.comptool import TestManager, TestInstance, RejectResult
|
|
from test_framework.blocktools import *
|
|
import copy
|
|
import time
|
|
|
|
# Use the ComparisonTestFramework with 1 node: only use --testbinary.
|
|
class InvalidBlockRequestTest(ComparisonTestFramework):
|
|
|
|
''' Can either run this test as 1 node with expected answers, or two and compare them.
|
|
Change the "outcome" variable from each TestInstance object to only do the comparison. '''
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.num_nodes = 1
|
|
|
|
def run_test(self):
|
|
test = TestManager(self, self.options.tmpdir)
|
|
test.add_all_connections(self.nodes)
|
|
self.tip = None
|
|
self.block_time = None
|
|
NetworkThread().start() # Start up network handling in another thread
|
|
test.run()
|
|
|
|
def get_tests(self):
|
|
if self.tip is None:
|
|
self.tip = int("0x" + self.nodes[0].getbestblockhash(), 0)
|
|
self.block_time = int(time.time())+1
|
|
|
|
'''
|
|
Create a new block with an anyone-can-spend coinbase
|
|
'''
|
|
height = 1
|
|
block = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
self.block_time += 1
|
|
block.solve()
|
|
# Save the coinbase for later
|
|
self.block1 = block
|
|
self.tip = block.sha256
|
|
height += 1
|
|
yield TestInstance([[block, True]])
|
|
|
|
'''
|
|
Now we need that block to mature so we can spend the coinbase.
|
|
'''
|
|
test = TestInstance(sync_every_block=False)
|
|
for i in range(100):
|
|
block = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
block.solve()
|
|
self.tip = block.sha256
|
|
self.block_time += 1
|
|
test.blocks_and_transactions.append([block, True])
|
|
height += 1
|
|
yield test
|
|
|
|
'''
|
|
Now we use merkle-root malleability to generate an invalid block with
|
|
same blockheader.
|
|
Manufacture a block with 3 transactions (coinbase, spend of prior
|
|
coinbase, spend of that spend). Duplicate the 3rd transaction to
|
|
leave merkle root and blockheader unchanged but invalidate the block.
|
|
'''
|
|
block2 = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
self.block_time += 1
|
|
|
|
# b'0x51' is OP_TRUE
|
|
tx1 = create_transaction(self.block1.vtx[0], 0, b'\x51', 50 * COIN)
|
|
tx2 = create_transaction(tx1, 0, b'\x51', 50 * COIN)
|
|
|
|
block2.vtx.extend([tx1, tx2])
|
|
block2.hashMerkleRoot = block2.calc_merkle_root()
|
|
block2.rehash()
|
|
block2.solve()
|
|
orig_hash = block2.sha256
|
|
block2_orig = copy.deepcopy(block2)
|
|
|
|
# Mutate block 2
|
|
block2.vtx.append(tx2)
|
|
assert_equal(block2.hashMerkleRoot, block2.calc_merkle_root())
|
|
assert_equal(orig_hash, block2.rehash())
|
|
assert(block2_orig.vtx != block2.vtx)
|
|
|
|
self.tip = block2.sha256
|
|
yield TestInstance([[block2, RejectResult(16, b'bad-txns-duplicate')], [block2_orig, True]])
|
|
height += 1
|
|
|
|
'''
|
|
Make sure that a totally screwed up block is not valid.
|
|
'''
|
|
block3 = create_block(self.tip, create_coinbase(height), self.block_time)
|
|
self.block_time += 1
|
|
block3.vtx[0].vout[0].nValue = 100 * COIN # Too high!
|
|
block3.vtx[0].sha256=None
|
|
block3.vtx[0].calc_sha256()
|
|
block3.hashMerkleRoot = block3.calc_merkle_root()
|
|
block3.rehash()
|
|
block3.solve()
|
|
|
|
yield TestInstance([[block3, RejectResult(16, b'bad-cb-amount')]])
|
|
|
|
|
|
if __name__ == '__main__':
|
|
InvalidBlockRequestTest().main()
|