diff options
Diffstat (limited to 'test/functional/feature_block.py')
| -rwxr-xr-x | test/functional/feature_block.py | 1308 |
1 files changed, 668 insertions, 640 deletions
diff --git a/test/functional/feature_block.py b/test/functional/feature_block.py index fe9bbda14b..181c7f3369 100755 --- a/test/functional/feature_block.py +++ b/test/functional/feature_block.py @@ -2,36 +2,59 @@ # Copyright (c) 2015-2017 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 block processing. - -This reimplements tests from the bitcoinj/FullBlockTestGenerator used -by the pull-tester. - -We use the testing framework in which we expect a particular answer from -each test. -""" - -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 * +"""Test block processing.""" +import copy +import struct import time + +from test_framework.blocktools import create_block, create_coinbase, create_transaction, get_legacy_sigopcount_block from test_framework.key import CECKey -from test_framework.script import * -from test_framework.mininode import network_thread_start -import struct +from test_framework.messages import ( + CBlock, + COIN, + COutPoint, + CTransaction, + CTxIn, + CTxOut, + MAX_BLOCK_BASE_SIZE, + uint256_from_compact, + uint256_from_str, +) +from test_framework.mininode import P2PDataStore, network_thread_start, network_thread_join +from test_framework.script import ( + CScript, + MAX_SCRIPT_ELEMENT_SIZE, + OP_2DUP, + OP_CHECKMULTISIG, + OP_CHECKMULTISIGVERIFY, + OP_CHECKSIG, + OP_CHECKSIGVERIFY, + OP_ELSE, + OP_ENDIF, + OP_EQUAL, + OP_FALSE, + OP_HASH160, + OP_IF, + OP_INVALIDOPCODE, + OP_RETURN, + OP_TRUE, + SIGHASH_ALL, + SignatureHash, + hash160, +) +from test_framework.test_framework import BitcoinTestFramework +from test_framework.util import assert_equal + +MAX_BLOCK_SIGOPS = 20000 class PreviousSpendableOutput(): - def __init__(self, tx = CTransaction(), n = -1): + def __init__(self, tx=CTransaction(), n=-1): self.tx = tx self.n = n # the output we're spending # Use this class for tests that require behavior other than normal "mininode" behavior. # For now, it is used to serialize a bloated varint (b64). class CBrokenBlock(CBlock): - def __init__(self, header=None): - super(CBrokenBlock, self).__init__(header) - def initialize(self, base_block): self.vtx = copy.deepcopy(base_block.vtx) self.hashMerkleRoot = self.calc_merkle_root() @@ -48,381 +71,272 @@ class CBrokenBlock(CBlock): return r def normal_serialize(self): - r = b"" - r += super(CBrokenBlock, self).serialize() - return r + return super().serialize() -class FullBlockTest(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. +class FullBlockTest(BitcoinTestFramework): def set_test_params(self): self.num_nodes = 1 self.setup_clean_chain = True + self.extra_args = [[]] + + def run_test(self): + node = self.nodes[0] # convenience reference to the node + + # reconnect_p2p() expects the network thread to be running + network_thread_start() + + self.reconnect_p2p() + self.block_heights = {} self.coinbase_key = CECKey() self.coinbase_key.set_secretbytes(b"horsebattery") self.coinbase_pubkey = self.coinbase_key.get_pubkey() self.tip = None self.blocks = {} - - def add_options(self, parser): - super().add_options(parser) - parser.add_option("--runbarelyexpensive", dest="runbarelyexpensive", default=True) - - def run_test(self): - self.test = TestManager(self, self.options.tmpdir) - self.test.add_all_connections(self.nodes) - network_thread_start() - self.test.run() - - def add_transactions_to_block(self, block, tx_list): - [ tx.rehash() for tx in tx_list ] - block.vtx.extend(tx_list) - - # this is a little handier to use than the version in blocktools.py - def create_tx(self, spend_tx, n, value, script=CScript([OP_TRUE])): - tx = create_transaction(spend_tx, n, b"", value, script) - return tx - - # sign a transaction, using the key we know about - # this signs input 0 in tx, which is assumed to be spending output n in spend_tx - def sign_tx(self, tx, spend_tx, n): - scriptPubKey = bytearray(spend_tx.vout[n].scriptPubKey) - if (scriptPubKey[0] == OP_TRUE): # an anyone-can-spend - tx.vin[0].scriptSig = CScript() - return - (sighash, err) = SignatureHash(spend_tx.vout[n].scriptPubKey, tx, 0, SIGHASH_ALL) - tx.vin[0].scriptSig = CScript([self.coinbase_key.sign(sighash) + bytes(bytearray([SIGHASH_ALL]))]) - - def create_and_sign_transaction(self, spend_tx, n, value, script=CScript([OP_TRUE])): - tx = self.create_tx(spend_tx, n, value, script) - self.sign_tx(tx, spend_tx, n) - tx.rehash() - return tx - - def next_block(self, number, spend=None, additional_coinbase_value=0, script=CScript([OP_TRUE]), solve=True): - if self.tip == None: - base_block_hash = self.genesis_hash - block_time = int(time.time())+1 - else: - base_block_hash = self.tip.sha256 - block_time = self.tip.nTime + 1 - # First create the coinbase - height = self.block_heights[base_block_hash] + 1 - coinbase = create_coinbase(height, self.coinbase_pubkey) - coinbase.vout[0].nValue += additional_coinbase_value - coinbase.rehash() - if spend == None: - block = create_block(base_block_hash, coinbase, block_time) - else: - coinbase.vout[0].nValue += spend.tx.vout[spend.n].nValue - 1 # all but one satoshi to fees - coinbase.rehash() - block = create_block(base_block_hash, coinbase, block_time) - tx = create_transaction(spend.tx, spend.n, b"", 1, script) # spend 1 satoshi - self.sign_tx(tx, spend.tx, spend.n) - self.add_transactions_to_block(block, [tx]) - block.hashMerkleRoot = block.calc_merkle_root() - if solve: - block.solve() - self.tip = block - self.block_heights[block.sha256] = height - assert number not in self.blocks - self.blocks[number] = block - return block - - def get_tests(self): self.genesis_hash = int(self.nodes[0].getbestblockhash(), 16) self.block_heights[self.genesis_hash] = 0 - spendable_outputs = [] - - # save the current tip so it can be spent by a later block - def save_spendable_output(): - spendable_outputs.append(self.tip) - - # get an output that we previously marked as spendable - def get_spendable_output(): - return PreviousSpendableOutput(spendable_outputs.pop(0).vtx[0], 0) - - # returns a test case that asserts that the current tip was accepted - def accepted(): - return TestInstance([[self.tip, True]]) - - # returns a test case that asserts that the current tip was rejected - def rejected(reject = None): - if reject is None: - return TestInstance([[self.tip, False]]) - else: - return TestInstance([[self.tip, reject]]) - - # move the tip back to a previous block - def tip(number): - self.tip = self.blocks[number] - - # adds transactions to the block and updates state - def update_block(block_number, new_transactions): - block = self.blocks[block_number] - self.add_transactions_to_block(block, new_transactions) - old_sha256 = block.sha256 - block.hashMerkleRoot = block.calc_merkle_root() - block.solve() - # Update the internal state just like in next_block - self.tip = block - if block.sha256 != old_sha256: - self.block_heights[block.sha256] = self.block_heights[old_sha256] - del self.block_heights[old_sha256] - self.blocks[block_number] = block - return block - - # shorthand for functions - block = self.next_block - create_tx = self.create_tx - create_and_sign_tx = self.create_and_sign_transaction - - # these must be updated if consensus changes - MAX_BLOCK_SIGOPS = 20000 - + self.spendable_outputs = [] # Create a new block - block(0) - save_spendable_output() - yield accepted() - + b0 = self.next_block(0) + self.save_spendable_output() + self.sync_blocks([b0]) - # Now we need that block to mature so we can spend the coinbase. - test = TestInstance(sync_every_block=False) + # Allow the block to mature + blocks = [] for i in range(99): - block(5000 + i) - test.blocks_and_transactions.append([self.tip, True]) - save_spendable_output() - yield test + blocks.append(self.next_block(5000 + i)) + self.save_spendable_output() + self.sync_blocks(blocks) # collect spendable outputs now to avoid cluttering the code later on out = [] for i in range(33): - out.append(get_spendable_output()) + out.append(self.get_spendable_output()) # Start by building a couple of blocks on top (which output is spent is # in parentheses): # genesis -> b1 (0) -> b2 (1) - block(1, spend=out[0]) - save_spendable_output() - yield accepted() + b1 = self.next_block(1, spend=out[0]) + self.save_spendable_output() - block(2, spend=out[1]) - yield accepted() - save_spendable_output() + b2 = self.next_block(2, spend=out[1]) + self.save_spendable_output() - # so fork like this: + self.sync_blocks([b1, b2]) + + # Fork like this: # # genesis -> b1 (0) -> b2 (1) # \-> b3 (1) # # Nothing should happen at this point. We saw b2 first so it takes priority. - tip(1) - b3 = block(3, spend=out[1]) + self.log.info("Don't reorg to a chain of the same length") + self.move_tip(1) + b3 = self.next_block(3, spend=out[1]) txout_b3 = PreviousSpendableOutput(b3.vtx[1], 0) - yield rejected() - + self.sync_blocks([b3], False) # Now we add another block to make the alternative chain longer. # # genesis -> b1 (0) -> b2 (1) # \-> b3 (1) -> b4 (2) - block(4, spend=out[2]) - yield accepted() - + self.log.info("Reorg to a longer chain") + b4 = self.next_block(4, spend=out[2]) + self.sync_blocks([b4]) # ... and back to the first chain. # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b3 (1) -> b4 (2) - tip(2) - block(5, spend=out[2]) - save_spendable_output() - yield rejected() + self.move_tip(2) + b5 = self.next_block(5, spend=out[2]) + self.save_spendable_output() + self.sync_blocks([b5], False) - block(6, spend=out[3]) - yield accepted() + self.log.info("Reorg back to the original chain") + b6 = self.next_block(6, spend=out[3]) + self.sync_blocks([b6], True) # Try to create a fork that double-spends # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b7 (2) -> b8 (4) # \-> b3 (1) -> b4 (2) - tip(5) - block(7, spend=out[2]) - yield rejected() + self.log.info("Reject a chain with a double spend, even if it is longer") + self.move_tip(5) + b7 = self.next_block(7, spend=out[2]) + self.sync_blocks([b7], False) - block(8, spend=out[4]) - yield rejected() + b8 = self.next_block(8, spend=out[4]) + self.sync_blocks([b8], False, reconnect=True) # Try to create a block that has too much fee # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b9 (4) # \-> b3 (1) -> b4 (2) - tip(6) - block(9, spend=out[4], additional_coinbase_value=1) - yield rejected(RejectResult(16, b'bad-cb-amount')) + self.log.info("Reject a block where the miner creates too much coinbase reward") + self.move_tip(6) + b9 = self.next_block(9, spend=out[4], additional_coinbase_value=1) + self.sync_blocks([b9], False, 16, b'bad-cb-amount', reconnect=True) # Create a fork that ends in a block with too much fee (the one that causes the reorg) # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b10 (3) -> b11 (4) # \-> b3 (1) -> b4 (2) - tip(5) - block(10, spend=out[3]) - yield rejected() - - block(11, spend=out[4], additional_coinbase_value=1) - yield rejected(RejectResult(16, b'bad-cb-amount')) + self.log.info("Reject a chain where the miner creates too much coinbase reward, even if the chain is longer") + self.move_tip(5) + b10 = self.next_block(10, spend=out[3]) + self.sync_blocks([b10], False) + b11 = self.next_block(11, spend=out[4], additional_coinbase_value=1) + self.sync_blocks([b11], False, 16, b'bad-cb-amount', reconnect=True) # Try again, but with a valid fork first # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b14 (5) - # (b12 added last) # \-> b3 (1) -> b4 (2) - tip(5) - b12 = block(12, spend=out[3]) - save_spendable_output() - b13 = block(13, spend=out[4]) - # Deliver the block header for b12, and the block b13. - # b13 should be accepted but the tip won't advance until b12 is delivered. - yield TestInstance([[CBlockHeader(b12), None], [b13, False]]) - - save_spendable_output() - # b14 is invalid, but the node won't know that until it tries to connect - # Tip still can't advance because b12 is missing - block(14, spend=out[5], additional_coinbase_value=1) - yield rejected() - - yield TestInstance([[b12, True, b13.sha256]]) # New tip should be b13. + self.log.info("Reject a chain where the miner creates too much coinbase reward, even if the chain is longer (on a forked chain)") + self.move_tip(5) + b12 = self.next_block(12, spend=out[3]) + self.save_spendable_output() + b13 = self.next_block(13, spend=out[4]) + self.save_spendable_output() + b14 = self.next_block(14, spend=out[5], additional_coinbase_value=1) + self.sync_blocks([b12, b13, b14], False, 16, b'bad-cb-amount', reconnect=True) + + # New tip should be b13. + assert_equal(node.getbestblockhash(), b13.hash) # Add a block with MAX_BLOCK_SIGOPS and one with one more sigop # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) -> b16 (6) # \-> b3 (1) -> b4 (2) - - # Test that a block with a lot of checksigs is okay + self.log.info("Accept a block with lots of checksigs") lots_of_checksigs = CScript([OP_CHECKSIG] * (MAX_BLOCK_SIGOPS - 1)) - tip(13) - block(15, spend=out[5], script=lots_of_checksigs) - yield accepted() - save_spendable_output() + self.move_tip(13) + b15 = self.next_block(15, spend=out[5], script=lots_of_checksigs) + self.save_spendable_output() + self.sync_blocks([b15], True) - - # Test that a block with too many checksigs is rejected + self.log.info("Reject a block with too many checksigs") too_many_checksigs = CScript([OP_CHECKSIG] * (MAX_BLOCK_SIGOPS)) - block(16, spend=out[6], script=too_many_checksigs) - yield rejected(RejectResult(16, b'bad-blk-sigops')) - + b16 = self.next_block(16, spend=out[6], script=too_many_checksigs) + self.sync_blocks([b16], False, 16, b'bad-blk-sigops', reconnect=True) # Attempt to spend a transaction created on a different fork # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) -> b17 (b3.vtx[1]) # \-> b3 (1) -> b4 (2) - tip(15) - block(17, spend=txout_b3) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) + self.log.info("Reject a block with a spend from a re-org'ed out tx") + self.move_tip(15) + b17 = self.next_block(17, spend=txout_b3) + self.sync_blocks([b17], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # Attempt to spend a transaction created on a different fork (on a fork this time) # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) # \-> b18 (b3.vtx[1]) -> b19 (6) # \-> b3 (1) -> b4 (2) - tip(13) - block(18, spend=txout_b3) - yield rejected() + self.log.info("Reject a block with a spend from a re-org'ed out tx (on a forked chain)") + self.move_tip(13) + b18 = self.next_block(18, spend=txout_b3) + self.sync_blocks([b18], False) - block(19, spend=out[6]) - yield rejected() + b19 = self.next_block(19, spend=out[6]) + self.sync_blocks([b19], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # Attempt to spend a coinbase at depth too low # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) -> b20 (7) # \-> b3 (1) -> b4 (2) - tip(15) - block(20, spend=out[7]) - yield rejected(RejectResult(16, b'bad-txns-premature-spend-of-coinbase')) + self.log.info("Reject a block spending an immature coinbase.") + self.move_tip(15) + b20 = self.next_block(20, spend=out[7]) + self.sync_blocks([b20], False, 16, b'bad-txns-premature-spend-of-coinbase') # Attempt to spend a coinbase at depth too low (on a fork this time) # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) # \-> b21 (6) -> b22 (5) # \-> b3 (1) -> b4 (2) - tip(13) - block(21, spend=out[6]) - yield rejected() + self.log.info("Reject a block spending an immature coinbase (on a forked chain)") + self.move_tip(13) + b21 = self.next_block(21, spend=out[6]) + self.sync_blocks([b21], False) - block(22, spend=out[5]) - yield rejected() + b22 = self.next_block(22, spend=out[5]) + self.sync_blocks([b22], False, 16, b'bad-txns-premature-spend-of-coinbase') # Create a block on either side of MAX_BLOCK_BASE_SIZE and make sure its accepted/rejected # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) # \-> b24 (6) -> b25 (7) # \-> b3 (1) -> b4 (2) - tip(15) - b23 = block(23, spend=out[6]) + self.log.info("Accept a block of size MAX_BLOCK_BASE_SIZE") + self.move_tip(15) + b23 = self.next_block(23, spend=out[6]) tx = CTransaction() script_length = MAX_BLOCK_BASE_SIZE - len(b23.serialize()) - 69 script_output = CScript([b'\x00' * script_length]) tx.vout.append(CTxOut(0, script_output)) tx.vin.append(CTxIn(COutPoint(b23.vtx[1].sha256, 0))) - b23 = update_block(23, [tx]) + b23 = self.update_block(23, [tx]) # Make sure the math above worked out to produce a max-sized block assert_equal(len(b23.serialize()), MAX_BLOCK_BASE_SIZE) - yield accepted() - save_spendable_output() + self.sync_blocks([b23], True) + self.save_spendable_output() - # Make the next block one byte bigger and check that it fails - tip(15) - b24 = block(24, spend=out[6]) + self.log.info("Reject a block of size MAX_BLOCK_BASE_SIZE + 1") + self.move_tip(15) + b24 = self.next_block(24, spend=out[6]) script_length = MAX_BLOCK_BASE_SIZE - len(b24.serialize()) - 69 - script_output = CScript([b'\x00' * (script_length+1)]) + script_output = CScript([b'\x00' * (script_length + 1)]) tx.vout = [CTxOut(0, script_output)] - b24 = update_block(24, [tx]) - assert_equal(len(b24.serialize()), MAX_BLOCK_BASE_SIZE+1) - yield rejected(RejectResult(16, b'bad-blk-length')) + b24 = self.update_block(24, [tx]) + assert_equal(len(b24.serialize()), MAX_BLOCK_BASE_SIZE + 1) + self.sync_blocks([b24], False, 16, b'bad-blk-length', reconnect=True) - block(25, spend=out[7]) - yield rejected() + b25 = self.next_block(25, spend=out[7]) + self.sync_blocks([b25], False) # Create blocks with a coinbase input script size out of range # genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3) # \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7) # \-> ... (6) -> ... (7) # \-> b3 (1) -> b4 (2) - tip(15) - b26 = block(26, spend=out[6]) + self.log.info("Reject a block with coinbase input script size out of range") + self.move_tip(15) + b26 = self.next_block(26, spend=out[6]) b26.vtx[0].vin[0].scriptSig = b'\x00' b26.vtx[0].rehash() # update_block causes the merkle root to get updated, even with no new # transactions, and updates the required state. - b26 = update_block(26, []) - yield rejected(RejectResult(16, b'bad-cb-length')) + b26 = self.update_block(26, []) + self.sync_blocks([b26], False, 16, b'bad-cb-length', reconnect=True) # Extend the b26 chain to make sure bitcoind isn't accepting b26 - block(27, spend=out[7]) - yield rejected(False) + b27 = self.next_block(27, spend=out[7]) + self.sync_blocks([b27], False) # Now try a too-large-coinbase script - tip(15) - b28 = block(28, spend=out[6]) + self.move_tip(15) + b28 = self.next_block(28, spend=out[6]) b28.vtx[0].vin[0].scriptSig = b'\x00' * 101 b28.vtx[0].rehash() - b28 = update_block(28, []) - yield rejected(RejectResult(16, b'bad-cb-length')) + b28 = self.update_block(28, []) + self.sync_blocks([b28], False, 16, b'bad-cb-length', reconnect=True) # Extend the b28 chain to make sure bitcoind isn't accepting b28 - block(29, spend=out[7]) - yield rejected(False) + b29 = self.next_block(29, spend=out[7]) + self.sync_blocks([b29], False) # b30 has a max-sized coinbase scriptSig. - tip(23) - b30 = block(30) + self.move_tip(23) + b30 = self.next_block(30) b30.vtx[0].vin[0].scriptSig = b'\x00' * 100 b30.vtx[0].rehash() - b30 = update_block(30, []) - yield accepted() - save_spendable_output() + b30 = self.update_block(30, []) + self.sync_blocks([b30], True) + self.save_spendable_output() # b31 - b35 - check sigops of OP_CHECKMULTISIG / OP_CHECKMULTISIGVERIFY / OP_CHECKSIGVERIFY # @@ -433,42 +347,45 @@ class FullBlockTest(ComparisonTestFramework): # # MULTISIG: each op code counts as 20 sigops. To create the edge case, pack another 19 sigops at the end. - lots_of_multisigs = CScript([OP_CHECKMULTISIG] * ((MAX_BLOCK_SIGOPS-1) // 20) + [OP_CHECKSIG] * 19) - b31 = block(31, spend=out[8], script=lots_of_multisigs) + self.log.info("Accept a block with the max number of OP_CHECKMULTISIG sigops") + lots_of_multisigs = CScript([OP_CHECKMULTISIG] * ((MAX_BLOCK_SIGOPS - 1) // 20) + [OP_CHECKSIG] * 19) + b31 = self.next_block(31, spend=out[8], script=lots_of_multisigs) assert_equal(get_legacy_sigopcount_block(b31), MAX_BLOCK_SIGOPS) - yield accepted() - save_spendable_output() + self.sync_blocks([b31], True) + self.save_spendable_output() # this goes over the limit because the coinbase has one sigop + self.log.info("Reject a block with too many OP_CHECKMULTISIG sigops") too_many_multisigs = CScript([OP_CHECKMULTISIG] * (MAX_BLOCK_SIGOPS // 20)) - b32 = block(32, spend=out[9], script=too_many_multisigs) + b32 = self.next_block(32, spend=out[9], script=too_many_multisigs) assert_equal(get_legacy_sigopcount_block(b32), MAX_BLOCK_SIGOPS + 1) - yield rejected(RejectResult(16, b'bad-blk-sigops')) - + self.sync_blocks([b32], False, 16, b'bad-blk-sigops', reconnect=True) # CHECKMULTISIGVERIFY - tip(31) - lots_of_multisigs = CScript([OP_CHECKMULTISIGVERIFY] * ((MAX_BLOCK_SIGOPS-1) // 20) + [OP_CHECKSIG] * 19) - block(33, spend=out[9], script=lots_of_multisigs) - yield accepted() - save_spendable_output() - + self.log.info("Accept a block with the max number of OP_CHECKMULTISIGVERIFY sigops") + self.move_tip(31) + lots_of_multisigs = CScript([OP_CHECKMULTISIGVERIFY] * ((MAX_BLOCK_SIGOPS - 1) // 20) + [OP_CHECKSIG] * 19) + b33 = self.next_block(33, spend=out[9], script=lots_of_multisigs) + self.sync_blocks([b33], True) + self.save_spendable_output() + + self.log.info("Reject a block with too many OP_CHECKMULTISIGVERIFY sigops") too_many_multisigs = CScript([OP_CHECKMULTISIGVERIFY] * (MAX_BLOCK_SIGOPS // 20)) - block(34, spend=out[10], script=too_many_multisigs) - yield rejected(RejectResult(16, b'bad-blk-sigops')) - + b34 = self.next_block(34, spend=out[10], script=too_many_multisigs) + self.sync_blocks([b34], False, 16, b'bad-blk-sigops', reconnect=True) # CHECKSIGVERIFY - tip(33) + self.log.info("Accept a block with the max number of OP_CHECKSIGVERIFY sigops") + self.move_tip(33) lots_of_checksigs = CScript([OP_CHECKSIGVERIFY] * (MAX_BLOCK_SIGOPS - 1)) - b35 = block(35, spend=out[10], script=lots_of_checksigs) - yield accepted() - save_spendable_output() + b35 = self.next_block(35, spend=out[10], script=lots_of_checksigs) + self.sync_blocks([b35], True) + self.save_spendable_output() + self.log.info("Reject a block with too many OP_CHECKSIGVERIFY sigops") too_many_checksigs = CScript([OP_CHECKSIGVERIFY] * (MAX_BLOCK_SIGOPS)) - block(36, spend=out[11], script=too_many_checksigs) - yield rejected(RejectResult(16, b'bad-blk-sigops')) - + b36 = self.next_block(36, spend=out[11], script=too_many_checksigs) + self.sync_blocks([b36], False, 16, b'bad-blk-sigops', reconnect=True) # Check spending of a transaction in a block which failed to connect # @@ -479,17 +396,18 @@ class FullBlockTest(ComparisonTestFramework): # # save 37's spendable output, but then double-spend out11 to invalidate the block - tip(35) - b37 = block(37, spend=out[11]) + self.log.info("Reject a block spending transaction from a block which failed to connect") + self.move_tip(35) + b37 = self.next_block(37, spend=out[11]) txout_b37 = PreviousSpendableOutput(b37.vtx[1], 0) - tx = create_and_sign_tx(out[11].tx, out[11].n, 0) - b37 = update_block(37, [tx]) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) + tx = self.create_and_sign_transaction(out[11].tx, out[11].n, 0) + b37 = self.update_block(37, [tx]) + self.sync_blocks([b37], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # attempt to spend b37's first non-coinbase tx, at which point b37 was still considered valid - tip(35) - block(38, spend=txout_b37) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) + self.move_tip(35) + b38 = self.next_block(38, spend=txout_b37) + self.sync_blocks([b38], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # Check P2SH SigOp counting # @@ -502,45 +420,45 @@ class FullBlockTest(ComparisonTestFramework): # redeem_script = COINBASE_PUBKEY, (OP_2DUP+OP_CHECKSIGVERIFY) * 5, OP_CHECKSIG # p2sh_script = OP_HASH160, ripemd160(sha256(script)), OP_EQUAL # - tip(35) - b39 = block(39) + self.log.info("Check P2SH SIGOPS are correctly counted") + self.move_tip(35) + b39 = self.next_block(39) b39_outputs = 0 b39_sigops_per_output = 6 # Build the redeem script, hash it, use hash to create the p2sh script - redeem_script = CScript([self.coinbase_pubkey] + [OP_2DUP, OP_CHECKSIGVERIFY]*5 + [OP_CHECKSIG]) + redeem_script = CScript([self.coinbase_pubkey] + [OP_2DUP, OP_CHECKSIGVERIFY] * 5 + [OP_CHECKSIG]) redeem_script_hash = hash160(redeem_script) p2sh_script = CScript([OP_HASH160, redeem_script_hash, OP_EQUAL]) # Create a transaction that spends one satoshi to the p2sh_script, the rest to OP_TRUE # This must be signed because it is spending a coinbase spend = out[11] - tx = create_tx(spend.tx, spend.n, 1, p2sh_script) + tx = self.create_tx(spend.tx, spend.n, 1, p2sh_script) tx.vout.append(CTxOut(spend.tx.vout[spend.n].nValue - 1, CScript([OP_TRUE]))) self.sign_tx(tx, spend.tx, spend.n) tx.rehash() - b39 = update_block(39, [tx]) + b39 = self.update_block(39, [tx]) b39_outputs += 1 # Until block is full, add tx's with 1 satoshi to p2sh_script, the rest to OP_TRUE tx_new = None tx_last = tx - total_size=len(b39.serialize()) + total_size = len(b39.serialize()) while(total_size < MAX_BLOCK_BASE_SIZE): - tx_new = create_tx(tx_last, 1, 1, p2sh_script) + tx_new = self.create_tx(tx_last, 1, 1, p2sh_script) tx_new.vout.append(CTxOut(tx_last.vout[1].nValue - 1, CScript([OP_TRUE]))) tx_new.rehash() total_size += len(tx_new.serialize()) if total_size >= MAX_BLOCK_BASE_SIZE: break - b39.vtx.append(tx_new) # add tx to block + b39.vtx.append(tx_new) # add tx to block tx_last = tx_new b39_outputs += 1 - b39 = update_block(39, []) - yield accepted() - save_spendable_output() - + b39 = self.update_block(39, []) + self.sync_blocks([b39], True) + self.save_spendable_output() # Test sigops in P2SH redeem scripts # @@ -549,15 +467,16 @@ class FullBlockTest(ComparisonTestFramework): # # b41 does the same, less one, so it has the maximum sigops permitted. # - tip(39) - b40 = block(40, spend=out[12]) + self.log.info("Reject a block with too many P2SH sigops") + self.move_tip(39) + b40 = self.next_block(40, spend=out[12]) sigops = get_legacy_sigopcount_block(b40) numTxes = (MAX_BLOCK_SIGOPS - sigops) // b39_sigops_per_output assert_equal(numTxes <= b39_outputs, True) lastOutpoint = COutPoint(b40.vtx[1].sha256, 0) new_txs = [] - for i in range(1, numTxes+1): + for i in range(1, numTxes + 1): tx = CTransaction() tx.vout.append(CTxOut(1, CScript([OP_TRUE]))) tx.vin.append(CTxIn(lastOutpoint, b'')) @@ -579,35 +498,34 @@ class FullBlockTest(ComparisonTestFramework): tx.vout.append(CTxOut(1, CScript([OP_CHECKSIG] * b40_sigops_to_fill))) tx.rehash() new_txs.append(tx) - update_block(40, new_txs) - yield rejected(RejectResult(16, b'bad-blk-sigops')) + self.update_block(40, new_txs) + self.sync_blocks([b40], False, 16, b'bad-blk-sigops', reconnect=True) # same as b40, but one less sigop - tip(39) - block(41, spend=None) - update_block(41, b40.vtx[1:-1]) + self.log.info("Accept a block with the max number of P2SH sigops") + self.move_tip(39) + b41 = self.next_block(41, spend=None) + self.update_block(41, b40.vtx[1:-1]) b41_sigops_to_fill = b40_sigops_to_fill - 1 tx = CTransaction() tx.vin.append(CTxIn(lastOutpoint, b'')) tx.vout.append(CTxOut(1, CScript([OP_CHECKSIG] * b41_sigops_to_fill))) tx.rehash() - update_block(41, [tx]) - yield accepted() + self.update_block(41, [tx]) + self.sync_blocks([b41], True) # Fork off of b39 to create a constant base again # # b23 (6) -> b30 (7) -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) # \-> b41 (12) # - tip(39) - block(42, spend=out[12]) - yield rejected() - save_spendable_output() - - block(43, spend=out[13]) - yield accepted() - save_spendable_output() + self.move_tip(39) + b42 = self.next_block(42, spend=out[12]) + self.save_spendable_output() + b43 = self.next_block(43, spend=out[13]) + self.save_spendable_output() + self.sync_blocks([b42, b43], True) # Test a number of really invalid scenarios # @@ -616,6 +534,7 @@ class FullBlockTest(ComparisonTestFramework): # The next few blocks are going to be created "by hand" since they'll do funky things, such as having # the first transaction be non-coinbase, etc. The purpose of b44 is to make sure this works. + self.log.info("Build block 44 manually") height = self.block_heights[self.tip.sha256] + 1 coinbase = create_coinbase(height, self.coinbase_pubkey) b44 = CBlock() @@ -628,10 +547,10 @@ class FullBlockTest(ComparisonTestFramework): self.tip = b44 self.block_heights[b44.sha256] = height self.blocks[44] = b44 - yield accepted() + self.sync_blocks([b44], True) - # A block with a non-coinbase as the first tx - non_coinbase = create_tx(out[15].tx, out[15].n, 1) + self.log.info("Reject a block with a non-coinbase as the first tx") + non_coinbase = self.create_tx(out[15].tx, out[15].n, 1) b45 = CBlock() b45.nTime = self.tip.nTime + 1 b45.hashPrevBlock = self.tip.sha256 @@ -640,104 +559,102 @@ class FullBlockTest(ComparisonTestFramework): b45.hashMerkleRoot = b45.calc_merkle_root() b45.calc_sha256() b45.solve() - self.block_heights[b45.sha256] = self.block_heights[self.tip.sha256]+1 + self.block_heights[b45.sha256] = self.block_heights[self.tip.sha256] + 1 self.tip = b45 self.blocks[45] = b45 - yield rejected(RejectResult(16, b'bad-cb-missing')) + self.sync_blocks([b45], False, 16, b'bad-cb-missing', reconnect=True) - # A block with no txns - tip(44) + self.log.info("Reject a block with no transactions") + self.move_tip(44) b46 = CBlock() - b46.nTime = b44.nTime+1 + b46.nTime = b44.nTime + 1 b46.hashPrevBlock = b44.sha256 b46.nBits = 0x207fffff b46.vtx = [] b46.hashMerkleRoot = 0 b46.solve() - self.block_heights[b46.sha256] = self.block_heights[b44.sha256]+1 + self.block_heights[b46.sha256] = self.block_heights[b44.sha256] + 1 self.tip = b46 assert 46 not in self.blocks self.blocks[46] = b46 - s = ser_uint256(b46.hashMerkleRoot) - yield rejected(RejectResult(16, b'bad-blk-length')) + self.sync_blocks([b46], False, 16, b'bad-blk-length', reconnect=True) - # A block with invalid work - tip(44) - b47 = block(47, solve=False) + self.log.info("Reject a block with invalid work") + self.move_tip(44) + b47 = self.next_block(47, solve=False) target = uint256_from_compact(b47.nBits) - while b47.sha256 < target: #changed > to < + while b47.sha256 < target: b47.nNonce += 1 b47.rehash() - yield rejected(RejectResult(16, b'high-hash')) + self.sync_blocks([b47], False, request_block=False) - # A block with timestamp > 2 hrs in the future - tip(44) - b48 = block(48, solve=False) + self.log.info("Reject a block with a timestamp >2 hours in the future") + self.move_tip(44) + b48 = self.next_block(48, solve=False) b48.nTime = int(time.time()) + 60 * 60 * 3 b48.solve() - yield rejected(RejectResult(16, b'time-too-new')) + self.sync_blocks([b48], False, request_block=False) - # A block with an invalid merkle hash - tip(44) - b49 = block(49) + self.log.info("Reject a block with invalid merkle hash") + self.move_tip(44) + b49 = self.next_block(49) b49.hashMerkleRoot += 1 b49.solve() - yield rejected(RejectResult(16, b'bad-txnmrklroot')) + self.sync_blocks([b49], False, 16, b'bad-txnmrklroot', reconnect=True) - # A block with an incorrect POW limit - tip(44) - b50 = block(50) + self.log.info("Reject a block with incorrect POW limit") + self.move_tip(44) + b50 = self.next_block(50) b50.nBits = b50.nBits - 1 b50.solve() - yield rejected(RejectResult(16, b'bad-diffbits')) + self.sync_blocks([b50], False, request_block=False, reconnect=True) - # A block with two coinbase txns - tip(44) - b51 = block(51) + self.log.info("Reject a block with two coinbase transactions") + self.move_tip(44) + b51 = self.next_block(51) cb2 = create_coinbase(51, self.coinbase_pubkey) - b51 = update_block(51, [cb2]) - yield rejected(RejectResult(16, b'bad-cb-multiple')) + b51 = self.update_block(51, [cb2]) + self.sync_blocks([b51], False, 16, b'bad-cb-multiple', reconnect=True) - # A block w/ duplicate txns + self.log.info("Reject a block with duplicate transactions") # Note: txns have to be in the right position in the merkle tree to trigger this error - tip(44) - b52 = block(52, spend=out[15]) - tx = create_tx(b52.vtx[1], 0, 1) - b52 = update_block(52, [tx, tx]) - yield rejected(RejectResult(16, b'bad-txns-duplicate')) + self.move_tip(44) + b52 = self.next_block(52, spend=out[15]) + tx = self.create_tx(b52.vtx[1], 0, 1) + b52 = self.update_block(52, [tx, tx]) + self.sync_blocks([b52], False, 16, b'bad-txns-duplicate', reconnect=True) # Test block timestamps # -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) # \-> b54 (15) # - tip(43) - block(53, spend=out[14]) - yield rejected() # rejected since b44 is at same height - save_spendable_output() + self.move_tip(43) + b53 = self.next_block(53, spend=out[14]) + self.sync_blocks([b53], False) + self.save_spendable_output() - # invalid timestamp (b35 is 5 blocks back, so its time is MedianTimePast) - b54 = block(54, spend=out[15]) + self.log.info("Reject a block with timestamp before MedianTimePast") + b54 = self.next_block(54, spend=out[15]) b54.nTime = b35.nTime - 1 b54.solve() - yield rejected(RejectResult(16, b'time-too-old')) + self.sync_blocks([b54], False, request_block=False) # valid timestamp - tip(53) - b55 = block(55, spend=out[15]) + self.move_tip(53) + b55 = self.next_block(55, spend=out[15]) b55.nTime = b35.nTime - update_block(55, []) - yield accepted() - save_spendable_output() + self.update_block(55, []) + self.sync_blocks([b55], True) + self.save_spendable_output() - - # Test CVE-2012-2459 + # Test Merkle tree malleability # # -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57p2 (16) # \-> b57 (16) # \-> b56p2 (16) # \-> b56 (16) # - # Merkle tree malleability (CVE-2012-2459): repeating sequences of transactions in a block without + # Merkle tree malleability (CVE-2012-2459): repeating sequences of transactions in a block without # affecting the merkle root of a block, while still invalidating it. # See: src/consensus/merkle.h # @@ -758,46 +675,48 @@ class FullBlockTest(ComparisonTestFramework): # that the error was caught early, avoiding a DOS vulnerability.) # b57 - a good block with 2 txs, don't submit until end - tip(55) - b57 = block(57) - tx = create_and_sign_tx(out[16].tx, out[16].n, 1) - tx1 = create_tx(tx, 0, 1) - b57 = update_block(57, [tx, tx1]) + self.move_tip(55) + b57 = self.next_block(57) + tx = self.create_and_sign_transaction(out[16].tx, out[16].n, 1) + tx1 = self.create_tx(tx, 0, 1) + b57 = self.update_block(57, [tx, tx1]) # b56 - copy b57, add a duplicate tx - tip(55) + self.log.info("Reject a block with a duplicate transaction in the Merkle Tree (but with a valid Merkle Root)") + self.move_tip(55) b56 = copy.deepcopy(b57) self.blocks[56] = b56 - assert_equal(len(b56.vtx),3) - b56 = update_block(56, [tx1]) + assert_equal(len(b56.vtx), 3) + b56 = self.update_block(56, [tx1]) assert_equal(b56.hash, b57.hash) - yield rejected(RejectResult(16, b'bad-txns-duplicate')) + self.sync_blocks([b56], False, 16, b'bad-txns-duplicate', reconnect=True) # b57p2 - a good block with 6 tx'es, don't submit until end - tip(55) - b57p2 = block("57p2") - tx = create_and_sign_tx(out[16].tx, out[16].n, 1) - tx1 = create_tx(tx, 0, 1) - tx2 = create_tx(tx1, 0, 1) - tx3 = create_tx(tx2, 0, 1) - tx4 = create_tx(tx3, 0, 1) - b57p2 = update_block("57p2", [tx, tx1, tx2, tx3, tx4]) + self.move_tip(55) + b57p2 = self.next_block("57p2") + tx = self.create_and_sign_transaction(out[16].tx, out[16].n, 1) + tx1 = self.create_tx(tx, 0, 1) + tx2 = self.create_tx(tx1, 0, 1) + tx3 = self.create_tx(tx2, 0, 1) + tx4 = self.create_tx(tx3, 0, 1) + b57p2 = self.update_block("57p2", [tx, tx1, tx2, tx3, tx4]) # b56p2 - copy b57p2, duplicate two non-consecutive tx's - tip(55) + self.log.info("Reject a block with two duplicate transactions in the Merkle Tree (but with a valid Merkle Root)") + self.move_tip(55) b56p2 = copy.deepcopy(b57p2) self.blocks["b56p2"] = b56p2 assert_equal(b56p2.hash, b57p2.hash) - assert_equal(len(b56p2.vtx),6) - b56p2 = update_block("b56p2", [tx3, tx4]) - yield rejected(RejectResult(16, b'bad-txns-duplicate')) + assert_equal(len(b56p2.vtx), 6) + b56p2 = self.update_block("b56p2", [tx3, tx4]) + self.sync_blocks([b56p2], False, 16, b'bad-txns-duplicate', reconnect=True) - tip("57p2") - yield accepted() + self.move_tip("57p2") + self.sync_blocks([b57p2], True) - tip(57) - yield rejected() #rejected because 57p2 seen first - save_spendable_output() + self.move_tip(57) + self.sync_blocks([b57], False) # The tip is not updated because 57p2 seen first + self.save_spendable_output() # Test a few invalid tx types # @@ -806,28 +725,30 @@ class FullBlockTest(ComparisonTestFramework): # # tx with prevout.n out of range - tip(57) - b58 = block(58, spend=out[17]) + self.log.info("Reject a block with a transaction with prevout.n out of range") + self.move_tip(57) + b58 = self.next_block(58, spend=out[17]) tx = CTransaction() assert(len(out[17].tx.vout) < 42) tx.vin.append(CTxIn(COutPoint(out[17].tx.sha256, 42), CScript([OP_TRUE]), 0xffffffff)) tx.vout.append(CTxOut(0, b"")) tx.calc_sha256() - b58 = update_block(58, [tx]) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) + b58 = self.update_block(58, [tx]) + self.sync_blocks([b58], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) - # tx with output value > input value out of range - tip(57) - b59 = block(59) - tx = create_and_sign_tx(out[17].tx, out[17].n, 51*COIN) - b59 = update_block(59, [tx]) - yield rejected(RejectResult(16, b'bad-txns-in-belowout')) + # tx with output value > input value + self.log.info("Reject a block with a transaction with outputs > inputs") + self.move_tip(57) + b59 = self.next_block(59) + tx = self.create_and_sign_transaction(out[17].tx, out[17].n, 51 * COIN) + b59 = self.update_block(59, [tx]) + self.sync_blocks([b59], False, 16, b'bad-txns-in-belowout', reconnect=True) # reset to good chain - tip(57) - b60 = block(60, spend=out[17]) - yield accepted() - save_spendable_output() + self.move_tip(57) + b60 = self.next_block(60, spend=out[17]) + self.sync_blocks([b60], True) + self.save_spendable_output() # Test BIP30 # @@ -838,46 +759,46 @@ class FullBlockTest(ComparisonTestFramework): # not-fully-spent transaction in the same chain. To test, make identical coinbases; # the second one should be rejected. # - tip(60) - b61 = block(61, spend=out[18]) - b61.vtx[0].vin[0].scriptSig = b60.vtx[0].vin[0].scriptSig #equalize the coinbases + self.log.info("Reject a block with a transaction with a duplicate hash of a previous transaction (BIP30)") + self.move_tip(60) + b61 = self.next_block(61, spend=out[18]) + b61.vtx[0].vin[0].scriptSig = b60.vtx[0].vin[0].scriptSig # Equalize the coinbases b61.vtx[0].rehash() - b61 = update_block(61, []) + b61 = self.update_block(61, []) assert_equal(b60.vtx[0].serialize(), b61.vtx[0].serialize()) - yield rejected(RejectResult(16, b'bad-txns-BIP30')) - + self.sync_blocks([b61], False, 16, b'bad-txns-BIP30', reconnect=True) # Test tx.isFinal is properly rejected (not an exhaustive tx.isFinal test, that should be in data-driven transaction tests) # # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) # \-> b62 (18) # - tip(60) - b62 = block(62) + self.log.info("Reject a block with a transaction with a nonfinal locktime") + self.move_tip(60) + b62 = self.next_block(62) tx = CTransaction() - tx.nLockTime = 0xffffffff #this locktime is non-final + tx.nLockTime = 0xffffffff # this locktime is non-final assert(out[18].n < len(out[18].tx.vout)) - tx.vin.append(CTxIn(COutPoint(out[18].tx.sha256, out[18].n))) # don't set nSequence + tx.vin.append(CTxIn(COutPoint(out[18].tx.sha256, out[18].n))) # don't set nSequence tx.vout.append(CTxOut(0, CScript([OP_TRUE]))) assert(tx.vin[0].nSequence < 0xffffffff) tx.calc_sha256() - b62 = update_block(62, [tx]) - yield rejected(RejectResult(16, b'bad-txns-nonfinal')) - + b62 = self.update_block(62, [tx]) + self.sync_blocks([b62], False, 16, b'bad-txns-nonfinal') # Test a non-final coinbase is also rejected # # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) # \-> b63 (-) # - tip(60) - b63 = block(63) + self.log.info("Reject a block with a coinbase transaction with a nonfinal locktime") + self.move_tip(60) + b63 = self.next_block(63) b63.vtx[0].nLockTime = 0xffffffff b63.vtx[0].vin[0].nSequence = 0xDEADBEEF b63.vtx[0].rehash() - b63 = update_block(63, []) - yield rejected(RejectResult(16, b'bad-txns-nonfinal')) - + b63 = self.update_block(63, []) + self.sync_blocks([b63], False, 16, b'bad-txns-nonfinal') # This checks that a block with a bloated VARINT between the block_header and the array of tx such that # the block is > MAX_BLOCK_BASE_SIZE with the bloated varint, but <= MAX_BLOCK_BASE_SIZE without the bloated varint, @@ -893,8 +814,9 @@ class FullBlockTest(ComparisonTestFramework): # b64a is a bloated block (non-canonical varint) # b64 is a good block (same as b64 but w/ canonical varint) # - tip(60) - regular_block = block("64a", spend=out[18]) + self.log.info("Accept a valid block even if a bloated version of the block has previously been sent") + self.move_tip(60) + regular_block = self.next_block("64a", spend=out[18]) # make it a "broken_block," with non-canonical serialization b64a = CBrokenBlock(regular_block) @@ -908,45 +830,51 @@ class FullBlockTest(ComparisonTestFramework): script_output = CScript([b'\x00' * script_length]) tx.vout.append(CTxOut(0, script_output)) tx.vin.append(CTxIn(COutPoint(b64a.vtx[1].sha256, 0))) - b64a = update_block("64a", [tx]) + b64a = self.update_block("64a", [tx]) assert_equal(len(b64a.serialize()), MAX_BLOCK_BASE_SIZE + 8) - yield TestInstance([[self.tip, None]]) + self.sync_blocks([b64a], False, 1, b'error parsing message') - # comptool workaround: to make sure b64 is delivered, manually erase b64a from blockstore - self.test.block_store.erase(b64a.sha256) + # bitcoind doesn't disconnect us for sending a bloated block, but if we subsequently + # resend the header message, it won't send us the getdata message again. Just + # disconnect and reconnect and then call sync_blocks. + # TODO: improve this test to be less dependent on P2P DOS behaviour. + node.disconnect_p2ps() + self.reconnect_p2p() - tip(60) + self.move_tip(60) b64 = CBlock(b64a) b64.vtx = copy.deepcopy(b64a.vtx) assert_equal(b64.hash, b64a.hash) assert_equal(len(b64.serialize()), MAX_BLOCK_BASE_SIZE) self.blocks[64] = b64 - update_block(64, []) - yield accepted() - save_spendable_output() + b64 = self.update_block(64, []) + self.sync_blocks([b64], True) + self.save_spendable_output() # Spend an output created in the block itself # # -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) # - tip(64) - block(65) - tx1 = create_and_sign_tx(out[19].tx, out[19].n, out[19].tx.vout[0].nValue) - tx2 = create_and_sign_tx(tx1, 0, 0) - update_block(65, [tx1, tx2]) - yield accepted() - save_spendable_output() + self.log.info("Accept a block with a transaction spending an output created in the same block") + self.move_tip(64) + b65 = self.next_block(65) + tx1 = self.create_and_sign_transaction(out[19].tx, out[19].n, out[19].tx.vout[0].nValue) + tx2 = self.create_and_sign_transaction(tx1, 0, 0) + b65 = self.update_block(65, [tx1, tx2]) + self.sync_blocks([b65], True) + self.save_spendable_output() # Attempt to spend an output created later in the same block # # -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) # \-> b66 (20) - tip(65) - block(66) - tx1 = create_and_sign_tx(out[20].tx, out[20].n, out[20].tx.vout[0].nValue) - tx2 = create_and_sign_tx(tx1, 0, 1) - update_block(66, [tx2, tx1]) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) + self.log.info("Reject a block with a transaction spending an output created later in the same block") + self.move_tip(65) + b66 = self.next_block(66) + tx1 = self.create_and_sign_transaction(out[20].tx, out[20].n, out[20].tx.vout[0].nValue) + tx2 = self.create_and_sign_transaction(tx1, 0, 1) + b66 = self.update_block(66, [tx2, tx1]) + self.sync_blocks([b66], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # Attempt to double-spend a transaction created in a block # @@ -954,13 +882,14 @@ class FullBlockTest(ComparisonTestFramework): # \-> b67 (20) # # - tip(65) - block(67) - tx1 = create_and_sign_tx(out[20].tx, out[20].n, out[20].tx.vout[0].nValue) - tx2 = create_and_sign_tx(tx1, 0, 1) - tx3 = create_and_sign_tx(tx1, 0, 2) - update_block(67, [tx1, tx2, tx3]) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) + self.log.info("Reject a block with a transaction double spending a transaction creted in the same block") + self.move_tip(65) + b67 = self.next_block(67) + tx1 = self.create_and_sign_transaction(out[20].tx, out[20].n, out[20].tx.vout[0].nValue) + tx2 = self.create_and_sign_transaction(tx1, 0, 1) + tx3 = self.create_and_sign_transaction(tx1, 0, 2) + b67 = self.update_block(67, [tx1, tx2, tx3]) + self.sync_blocks([b67], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # More tests of block subsidy # @@ -974,34 +903,36 @@ class FullBlockTest(ComparisonTestFramework): # b69 - coinbase with extra 10 satoshis, and a tx that gives a 10 satoshi fee # this succeeds # - tip(65) - block(68, additional_coinbase_value=10) - tx = create_and_sign_tx(out[20].tx, out[20].n, out[20].tx.vout[0].nValue-9) - update_block(68, [tx]) - yield rejected(RejectResult(16, b'bad-cb-amount')) - - tip(65) - b69 = block(69, additional_coinbase_value=10) - tx = create_and_sign_tx(out[20].tx, out[20].n, out[20].tx.vout[0].nValue-10) - update_block(69, [tx]) - yield accepted() - save_spendable_output() + self.log.info("Reject a block trying to claim too much subsidy in the coinbase transaction") + self.move_tip(65) + b68 = self.next_block(68, additional_coinbase_value=10) + tx = self.create_and_sign_transaction(out[20].tx, out[20].n, out[20].tx.vout[0].nValue - 9) + b68 = self.update_block(68, [tx]) + self.sync_blocks([b68], False, 16, b'bad-cb-amount', reconnect=True) + + self.log.info("Accept a block claiming the correct subsidy in the coinbase transaction") + self.move_tip(65) + b69 = self.next_block(69, additional_coinbase_value=10) + tx = self.create_and_sign_transaction(out[20].tx, out[20].n, out[20].tx.vout[0].nValue - 10) + self.update_block(69, [tx]) + self.sync_blocks([b69], True) + self.save_spendable_output() # Test spending the outpoint of a non-existent transaction # # -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20) # \-> b70 (21) # - tip(69) - block(70, spend=out[21]) + self.log.info("Reject a block containing a transaction spending from a non-existent input") + self.move_tip(69) + b70 = self.next_block(70, spend=out[21]) bogus_tx = CTransaction() bogus_tx.sha256 = uint256_from_str(b"23c70ed7c0506e9178fc1a987f40a33946d4ad4c962b5ae3a52546da53af0c5c") tx = CTransaction() tx.vin.append(CTxIn(COutPoint(bogus_tx.sha256, 0), b"", 0xffffffff)) tx.vout.append(CTxOut(1, b"")) - update_block(70, [tx]) - yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent')) - + b70 = self.update_block(70, [tx]) + self.sync_blocks([b70], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) # Test accepting an invalid block which has the same hash as a valid one (via merkle tree tricks) # @@ -1009,13 +940,13 @@ class FullBlockTest(ComparisonTestFramework): # \-> b71 (21) # # b72 is a good block. - # b71 is a copy of 72, but re-adds one of its transactions. However, it has the same hash as b71. - # - tip(69) - b72 = block(72) - tx1 = create_and_sign_tx(out[21].tx, out[21].n, 2) - tx2 = create_and_sign_tx(tx1, 0, 1) - b72 = update_block(72, [tx1, tx2]) # now tip is 72 + # b71 is a copy of 72, but re-adds one of its transactions. However, it has the same hash as b72. + self.log.info("Reject a block containing a duplicate transaction but with the same Merkle root (Merkle tree malleability") + self.move_tip(69) + b72 = self.next_block(72) + tx1 = self.create_and_sign_transaction(out[21].tx, out[21].n, 2) + tx2 = self.create_and_sign_transaction(tx1, 0, 1) + b72 = self.update_block(72, [tx1, tx2]) # now tip is 72 b71 = copy.deepcopy(b72) b71.vtx.append(tx2) # add duplicate tx2 self.block_heights[b71.sha256] = self.block_heights[b69.sha256] + 1 # b71 builds off b69 @@ -1025,12 +956,12 @@ class FullBlockTest(ComparisonTestFramework): assert_equal(len(b72.vtx), 3) assert_equal(b72.sha256, b71.sha256) - tip(71) - yield rejected(RejectResult(16, b'bad-txns-duplicate')) - tip(72) - yield accepted() - save_spendable_output() + self.move_tip(71) + self.sync_blocks([b71], False, 16, b'bad-txns-duplicate', reconnect=True) + self.move_tip(72) + self.sync_blocks([b72], True) + self.save_spendable_output() # Test some invalid scripts and MAX_BLOCK_SIGOPS # @@ -1048,23 +979,23 @@ class FullBlockTest(ComparisonTestFramework): # bytearray[20,000-20,003]: 521 (max_script_element_size+1, in little-endian format) # bytearray[20,004-20,525]: unread data (script_element) # bytearray[20,526] : OP_CHECKSIG (this puts us over the limit) - # - tip(72) - b73 = block(73) + self.log.info("Reject a block containing too many sigops after a large script element") + self.move_tip(72) + b73 = self.next_block(73) size = MAX_BLOCK_SIGOPS - 1 + MAX_SCRIPT_ELEMENT_SIZE + 1 + 5 + 1 a = bytearray([OP_CHECKSIG] * size) - a[MAX_BLOCK_SIGOPS - 1] = int("4e",16) # OP_PUSHDATA4 + a[MAX_BLOCK_SIGOPS - 1] = int("4e", 16) # OP_PUSHDATA4 element_size = MAX_SCRIPT_ELEMENT_SIZE + 1 a[MAX_BLOCK_SIGOPS] = element_size % 256 - a[MAX_BLOCK_SIGOPS+1] = element_size // 256 - a[MAX_BLOCK_SIGOPS+2] = 0 - a[MAX_BLOCK_SIGOPS+3] = 0 + a[MAX_BLOCK_SIGOPS + 1] = element_size // 256 + a[MAX_BLOCK_SIGOPS + 2] = 0 + a[MAX_BLOCK_SIGOPS + 3] = 0 - tx = create_and_sign_tx(out[22].tx, 0, 1, CScript(a)) - b73 = update_block(73, [tx]) - assert_equal(get_legacy_sigopcount_block(b73), MAX_BLOCK_SIGOPS+1) - yield rejected(RejectResult(16, b'bad-blk-sigops')) + tx = self.create_and_sign_transaction(out[22].tx, 0, 1, CScript(a)) + b73 = self.update_block(73, [tx]) + assert_equal(get_legacy_sigopcount_block(b73), MAX_BLOCK_SIGOPS + 1) + self.sync_blocks([b73], False, 16, b'bad-blk-sigops', reconnect=True) # b74/75 - if we push an invalid script element, all prevous sigops are counted, # but sigops after the element are not counted. @@ -1076,45 +1007,44 @@ class FullBlockTest(ComparisonTestFramework): # # b74 fails because we put MAX_BLOCK_SIGOPS+1 before the element # b75 succeeds because we put MAX_BLOCK_SIGOPS before the element - # - # - tip(72) - b74 = block(74) - size = MAX_BLOCK_SIGOPS - 1 + MAX_SCRIPT_ELEMENT_SIZE + 42 # total = 20,561 + self.log.info("Check sigops are counted correctly after an invalid script element") + self.move_tip(72) + b74 = self.next_block(74) + size = MAX_BLOCK_SIGOPS - 1 + MAX_SCRIPT_ELEMENT_SIZE + 42 # total = 20,561 a = bytearray([OP_CHECKSIG] * size) a[MAX_BLOCK_SIGOPS] = 0x4e - a[MAX_BLOCK_SIGOPS+1] = 0xfe - a[MAX_BLOCK_SIGOPS+2] = 0xff - a[MAX_BLOCK_SIGOPS+3] = 0xff - a[MAX_BLOCK_SIGOPS+4] = 0xff - tx = create_and_sign_tx(out[22].tx, 0, 1, CScript(a)) - b74 = update_block(74, [tx]) - yield rejected(RejectResult(16, b'bad-blk-sigops')) - - tip(72) - b75 = block(75) + a[MAX_BLOCK_SIGOPS + 1] = 0xfe + a[MAX_BLOCK_SIGOPS + 2] = 0xff + a[MAX_BLOCK_SIGOPS + 3] = 0xff + a[MAX_BLOCK_SIGOPS + 4] = 0xff + tx = self.create_and_sign_transaction(out[22].tx, 0, 1, CScript(a)) + b74 = self.update_block(74, [tx]) + self.sync_blocks([b74], False, 16, b'bad-blk-sigops', reconnect=True) + + self.move_tip(72) + b75 = self.next_block(75) size = MAX_BLOCK_SIGOPS - 1 + MAX_SCRIPT_ELEMENT_SIZE + 42 a = bytearray([OP_CHECKSIG] * size) - a[MAX_BLOCK_SIGOPS-1] = 0x4e + a[MAX_BLOCK_SIGOPS - 1] = 0x4e a[MAX_BLOCK_SIGOPS] = 0xff - a[MAX_BLOCK_SIGOPS+1] = 0xff - a[MAX_BLOCK_SIGOPS+2] = 0xff - a[MAX_BLOCK_SIGOPS+3] = 0xff - tx = create_and_sign_tx(out[22].tx, 0, 1, CScript(a)) - b75 = update_block(75, [tx]) - yield accepted() - save_spendable_output() + a[MAX_BLOCK_SIGOPS + 1] = 0xff + a[MAX_BLOCK_SIGOPS + 2] = 0xff + a[MAX_BLOCK_SIGOPS + 3] = 0xff + tx = self.create_and_sign_transaction(out[22].tx, 0, 1, CScript(a)) + b75 = self.update_block(75, [tx]) + self.sync_blocks([b75], True) + self.save_spendable_output() # Check that if we push an element filled with CHECKSIGs, they are not counted - tip(75) - b76 = block(76) + self.move_tip(75) + b76 = self.next_block(76) size = MAX_BLOCK_SIGOPS - 1 + MAX_SCRIPT_ELEMENT_SIZE + 1 + 5 a = bytearray([OP_CHECKSIG] * size) - a[MAX_BLOCK_SIGOPS-1] = 0x4e # PUSHDATA4, but leave the following bytes as just checksigs - tx = create_and_sign_tx(out[23].tx, 0, 1, CScript(a)) - b76 = update_block(76, [tx]) - yield accepted() - save_spendable_output() + a[MAX_BLOCK_SIGOPS - 1] = 0x4e # PUSHDATA4, but leave the following bytes as just checksigs + tx = self.create_and_sign_transaction(out[23].tx, 0, 1, CScript(a)) + b76 = self.update_block(76, [tx]) + self.sync_blocks([b76], True) + self.save_spendable_output() # Test transaction resurrection # @@ -1133,39 +1063,39 @@ class FullBlockTest(ComparisonTestFramework): # To get around this issue, we construct transactions which are not signed and which # spend to OP_TRUE. If the standard-ness rules change, this test would need to be # updated. (Perhaps to spend to a P2SH OP_TRUE script) - # - tip(76) - block(77) - tx77 = create_and_sign_tx(out[24].tx, out[24].n, 10*COIN) - update_block(77, [tx77]) - yield accepted() - save_spendable_output() - - block(78) - tx78 = create_tx(tx77, 0, 9*COIN) - update_block(78, [tx78]) - yield accepted() - - block(79) - tx79 = create_tx(tx78, 0, 8*COIN) - update_block(79, [tx79]) - yield accepted() + self.log.info("Test transaction resurrection during a re-org") + self.move_tip(76) + b77 = self.next_block(77) + tx77 = self.create_and_sign_transaction(out[24].tx, out[24].n, 10 * COIN) + b77 = self.update_block(77, [tx77]) + self.sync_blocks([b77], True) + self.save_spendable_output() + + b78 = self.next_block(78) + tx78 = self.create_tx(tx77, 0, 9 * COIN) + b78 = self.update_block(78, [tx78]) + self.sync_blocks([b78], True) + + b79 = self.next_block(79) + tx79 = self.create_tx(tx78, 0, 8 * COIN) + b79 = self.update_block(79, [tx79]) + self.sync_blocks([b79], True) # mempool should be empty assert_equal(len(self.nodes[0].getrawmempool()), 0) - tip(77) - block(80, spend=out[25]) - yield rejected() - save_spendable_output() + self.move_tip(77) + b80 = self.next_block(80, spend=out[25]) + self.sync_blocks([b80], False, request_block=False) + self.save_spendable_output() - block(81, spend=out[26]) - yield rejected() # other chain is same length - save_spendable_output() + b81 = self.next_block(81, spend=out[26]) + self.sync_blocks([b81], False, request_block=False) # other chain is same length + self.save_spendable_output() - block(82, spend=out[27]) - yield accepted() # now this chain is longer, triggers re-org - save_spendable_output() + b82 = self.next_block(82, spend=out[27]) + self.sync_blocks([b82], True) # now this chain is longer, triggers re-org + self.save_spendable_output() # now check that tx78 and tx79 have been put back into the peer's mempool mempool = self.nodes[0].getrawmempool() @@ -1173,33 +1103,32 @@ class FullBlockTest(ComparisonTestFramework): assert(tx78.hash in mempool) assert(tx79.hash in mempool) - # Test invalid opcodes in dead execution paths. # # -> b81 (26) -> b82 (27) -> b83 (28) # - block(83) + self.log.info("Accept a block with invalid opcodes in dead execution paths") + b83 = self.next_block(83) op_codes = [OP_IF, OP_INVALIDOPCODE, OP_ELSE, OP_TRUE, OP_ENDIF] script = CScript(op_codes) - tx1 = create_and_sign_tx(out[28].tx, out[28].n, out[28].tx.vout[0].nValue, script) + tx1 = self.create_and_sign_transaction(out[28].tx, out[28].n, out[28].tx.vout[0].nValue, script) - tx2 = create_and_sign_tx(tx1, 0, 0, CScript([OP_TRUE])) + tx2 = self.create_and_sign_transaction(tx1, 0, 0, CScript([OP_TRUE])) tx2.vin[0].scriptSig = CScript([OP_FALSE]) tx2.rehash() - update_block(83, [tx1, tx2]) - yield accepted() - save_spendable_output() - + b83 = self.update_block(83, [tx1, tx2]) + self.sync_blocks([b83], True) + self.save_spendable_output() # Reorg on/off blocks that have OP_RETURN in them (and try to spend them) # # -> b81 (26) -> b82 (27) -> b83 (28) -> b84 (29) -> b87 (30) -> b88 (31) # \-> b85 (29) -> b86 (30) \-> b89a (32) # - # - block(84) - tx1 = create_tx(out[29].tx, out[29].n, 0, CScript([OP_RETURN])) + self.log.info("Test re-orging blocks with OP_RETURN in them") + b84 = self.next_block(84) + tx1 = self.create_tx(out[29].tx, out[29].n, 0, CScript([OP_RETURN])) tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) @@ -1207,87 +1136,186 @@ class FullBlockTest(ComparisonTestFramework): tx1.calc_sha256() self.sign_tx(tx1, out[29].tx, out[29].n) tx1.rehash() - tx2 = create_tx(tx1, 1, 0, CScript([OP_RETURN])) + tx2 = self.create_tx(tx1, 1, 0, CScript([OP_RETURN])) tx2.vout.append(CTxOut(0, CScript([OP_RETURN]))) - tx3 = create_tx(tx1, 2, 0, CScript([OP_RETURN])) + tx3 = self.create_tx(tx1, 2, 0, CScript([OP_RETURN])) tx3.vout.append(CTxOut(0, CScript([OP_TRUE]))) - tx4 = create_tx(tx1, 3, 0, CScript([OP_TRUE])) + tx4 = self.create_tx(tx1, 3, 0, CScript([OP_TRUE])) tx4.vout.append(CTxOut(0, CScript([OP_RETURN]))) - tx5 = create_tx(tx1, 4, 0, CScript([OP_RETURN])) + tx5 = self.create_tx(tx1, 4, 0, CScript([OP_RETURN])) - update_block(84, [tx1,tx2,tx3,tx4,tx5]) - yield accepted() - save_spendable_output() + b84 = self.update_block(84, [tx1, tx2, tx3, tx4, tx5]) + self.sync_blocks([b84], True) + self.save_spendable_output() - tip(83) - block(85, spend=out[29]) - yield rejected() + self.move_tip(83) + b85 = self.next_block(85, spend=out[29]) + self.sync_blocks([b85], False) # other chain is same length - block(86, spend=out[30]) - yield accepted() + b86 = self.next_block(86, spend=out[30]) + self.sync_blocks([b86], True) - tip(84) - block(87, spend=out[30]) - yield rejected() - save_spendable_output() + self.move_tip(84) + b87 = self.next_block(87, spend=out[30]) + self.sync_blocks([b87], False) # other chain is same length + self.save_spendable_output() - block(88, spend=out[31]) - yield accepted() - save_spendable_output() + b88 = self.next_block(88, spend=out[31]) + self.sync_blocks([b88], True) + self.save_spendable_output() # trying to spend the OP_RETURN output is rejected - block("89a", spend=out[32]) - tx = create_tx(tx1, 0, 0, CScript([OP_TRUE])) - update_block("89a", [tx]) - yield rejected() - - - # Test re-org of a week's worth of blocks (1088 blocks) - # This test takes a minute or two and can be accomplished in memory - # - if self.options.runbarelyexpensive: - tip(88) - LARGE_REORG_SIZE = 1088 - test1 = TestInstance(sync_every_block=False) - spend=out[32] - for i in range(89, LARGE_REORG_SIZE + 89): - b = block(i, spend) - tx = CTransaction() - script_length = MAX_BLOCK_BASE_SIZE - len(b.serialize()) - 69 - script_output = CScript([b'\x00' * script_length]) - tx.vout.append(CTxOut(0, script_output)) - tx.vin.append(CTxIn(COutPoint(b.vtx[1].sha256, 0))) - b = update_block(i, [tx]) - assert_equal(len(b.serialize()), MAX_BLOCK_BASE_SIZE) - test1.blocks_and_transactions.append([self.tip, True]) - save_spendable_output() - spend = get_spendable_output() - - yield test1 - chain1_tip = i - - # now create alt chain of same length - tip(88) - test2 = TestInstance(sync_every_block=False) - for i in range(89, LARGE_REORG_SIZE + 89): - block("alt"+str(i)) - test2.blocks_and_transactions.append([self.tip, False]) - yield test2 - - # extend alt chain to trigger re-org - block("alt" + str(chain1_tip + 1)) - yield accepted() - - # ... and re-org back to the first chain - tip(chain1_tip) - block(chain1_tip + 1) - yield rejected() - block(chain1_tip + 2) - yield accepted() - - chain1_tip += 2 + b89a = self.next_block("89a", spend=out[32]) + tx = self.create_tx(tx1, 0, 0, CScript([OP_TRUE])) + b89a = self.update_block("89a", [tx]) + self.sync_blocks([b89a], False, 16, b'bad-txns-inputs-missingorspent', reconnect=True) + + self.log.info("Test a re-org of one week's worth of blocks (1088 blocks)") + + self.move_tip(88) + LARGE_REORG_SIZE = 1088 + blocks = [] + spend = out[32] + for i in range(89, LARGE_REORG_SIZE + 89): + b = self.next_block(i, spend) + tx = CTransaction() + script_length = MAX_BLOCK_BASE_SIZE - len(b.serialize()) - 69 + script_output = CScript([b'\x00' * script_length]) + tx.vout.append(CTxOut(0, script_output)) + tx.vin.append(CTxIn(COutPoint(b.vtx[1].sha256, 0))) + b = self.update_block(i, [tx]) + assert_equal(len(b.serialize()), MAX_BLOCK_BASE_SIZE) + blocks.append(b) + self.save_spendable_output() + spend = self.get_spendable_output() + + self.sync_blocks(blocks, True, timeout=180) + chain1_tip = i + + # now create alt chain of same length + self.move_tip(88) + blocks2 = [] + for i in range(89, LARGE_REORG_SIZE + 89): + blocks2.append(self.next_block("alt" + str(i))) + self.sync_blocks(blocks2, False, request_block=False) + + # extend alt chain to trigger re-org + block = self.next_block("alt" + str(chain1_tip + 1)) + self.sync_blocks([block], True, timeout=180) + + # ... and re-org back to the first chain + self.move_tip(chain1_tip) + block = self.next_block(chain1_tip + 1) + self.sync_blocks([block], False, request_block=False) + block = self.next_block(chain1_tip + 2) + self.sync_blocks([block], True, timeout=180) + + # Helper methods + ################ + + def add_transactions_to_block(self, block, tx_list): + [tx.rehash() for tx in tx_list] + block.vtx.extend(tx_list) + + # this is a little handier to use than the version in blocktools.py + def create_tx(self, spend_tx, n, value, script=CScript([OP_TRUE])): + return create_transaction(spend_tx, n, b"", value, script) + + # sign a transaction, using the key we know about + # this signs input 0 in tx, which is assumed to be spending output n in spend_tx + def sign_tx(self, tx, spend_tx, n): + scriptPubKey = bytearray(spend_tx.vout[n].scriptPubKey) + if (scriptPubKey[0] == OP_TRUE): # an anyone-can-spend + tx.vin[0].scriptSig = CScript() + return + (sighash, err) = SignatureHash(spend_tx.vout[n].scriptPubKey, tx, 0, SIGHASH_ALL) + tx.vin[0].scriptSig = CScript([self.coinbase_key.sign(sighash) + bytes(bytearray([SIGHASH_ALL]))]) + + def create_and_sign_transaction(self, spend_tx, n, value, script=CScript([OP_TRUE])): + tx = self.create_tx(spend_tx, n, value, script) + self.sign_tx(tx, spend_tx, n) + tx.rehash() + return tx + + def next_block(self, number, spend=None, additional_coinbase_value=0, script=CScript([OP_TRUE]), solve=True): + if self.tip is None: + base_block_hash = self.genesis_hash + block_time = int(time.time()) + 1 + else: + base_block_hash = self.tip.sha256 + block_time = self.tip.nTime + 1 + # First create the coinbase + height = self.block_heights[base_block_hash] + 1 + coinbase = create_coinbase(height, self.coinbase_pubkey) + coinbase.vout[0].nValue += additional_coinbase_value + coinbase.rehash() + if spend is None: + block = create_block(base_block_hash, coinbase, block_time) + else: + coinbase.vout[0].nValue += spend.tx.vout[spend.n].nValue - 1 # all but one satoshi to fees + coinbase.rehash() + block = create_block(base_block_hash, coinbase, block_time) + tx = create_transaction(spend.tx, spend.n, b"", 1, script) # spend 1 satoshi + self.sign_tx(tx, spend.tx, spend.n) + self.add_transactions_to_block(block, [tx]) + block.hashMerkleRoot = block.calc_merkle_root() + if solve: + block.solve() + self.tip = block + self.block_heights[block.sha256] = height + assert number not in self.blocks + self.blocks[number] = block + return block + + # save the current tip so it can be spent by a later block + def save_spendable_output(self): + self.log.debug("saving spendable output %s" % self.tip.vtx[0]) + self.spendable_outputs.append(self.tip) + + # get an output that we previously marked as spendable + def get_spendable_output(self): + self.log.debug("getting spendable output %s" % self.spendable_outputs[0].vtx[0]) + return PreviousSpendableOutput(self.spendable_outputs.pop(0).vtx[0], 0) + + # move the tip back to a previous block + def move_tip(self, number): + self.tip = self.blocks[number] + + # adds transactions to the block and updates state + def update_block(self, block_number, new_transactions): + block = self.blocks[block_number] + self.add_transactions_to_block(block, new_transactions) + old_sha256 = block.sha256 + block.hashMerkleRoot = block.calc_merkle_root() + block.solve() + # Update the internal state just like in next_block + self.tip = block + if block.sha256 != old_sha256: + self.block_heights[block.sha256] = self.block_heights[old_sha256] + del self.block_heights[old_sha256] + self.blocks[block_number] = block + return block + + def reconnect_p2p(self): + """Add a P2P connection to the node. + + The node gets disconnected several times in this test. This helper + method reconnects the p2p and restarts the network thread.""" + + network_thread_join() + self.nodes[0].disconnect_p2ps() + self.nodes[0].add_p2p_connection(P2PDataStore()) + network_thread_start() + self.nodes[0].p2p.wait_for_verack() + + def sync_blocks(self, blocks, success=True, reject_code=None, reject_reason=None, request_block=True, reconnect=False, timeout=60): + """Sends blocks to test node. Syncs and verifies that tip has advanced to most recent block. + Call with success = False if the tip shouldn't advance to the most recent block.""" + self.nodes[0].p2p.send_blocks_and_test(blocks, self.nodes[0], success=success, reject_code=reject_code, reject_reason=reject_reason, request_block=request_block, timeout=timeout) + if reconnect: + self.reconnect_p2p() if __name__ == '__main__': FullBlockTest().main() |