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Diffstat (limited to 'test/functional/feature_block.py')
| -rwxr-xr-x | test/functional/feature_block.py | 1293 |
1 files changed, 1293 insertions, 0 deletions
diff --git a/test/functional/feature_block.py b/test/functional/feature_block.py new file mode 100755 index 0000000000..fe9bbda14b --- /dev/null +++ b/test/functional/feature_block.py @@ -0,0 +1,1293 @@ +#!/usr/bin/env python3 +# 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 * +import time +from test_framework.key import CECKey +from test_framework.script import * +from test_framework.mininode import network_thread_start +import struct + +class PreviousSpendableOutput(): + 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() + + def serialize(self, with_witness=False): + r = b"" + r += super(CBlock, self).serialize() + r += struct.pack("<BQ", 255, len(self.vtx)) + for tx in self.vtx: + if with_witness: + r += tx.serialize_with_witness() + else: + r += tx.serialize_without_witness() + return r + + def normal_serialize(self): + r = b"" + r += super(CBrokenBlock, self).serialize() + return r + +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. + def set_test_params(self): + self.num_nodes = 1 + self.setup_clean_chain = True + 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 + + + # Create a new block + block(0) + save_spendable_output() + yield accepted() + + + # Now we need that block to mature so we can spend the coinbase. + test = TestInstance(sync_every_block=False) + for i in range(99): + block(5000 + i) + test.blocks_and_transactions.append([self.tip, True]) + save_spendable_output() + yield test + + # collect spendable outputs now to avoid cluttering the code later on + out = [] + for i in range(33): + out.append(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() + + block(2, spend=out[1]) + yield accepted() + save_spendable_output() + + # so 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]) + txout_b3 = PreviousSpendableOutput(b3.vtx[1], 0) + yield rejected() + + + # 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() + + + # ... 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() + + block(6, spend=out[3]) + yield accepted() + + # 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() + + block(8, spend=out[4]) + yield rejected() + + # 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')) + + # 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')) + + + # 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. + + # 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 + 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() + + + # Test that a block with too many checksigs is rejected + 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')) + + + # 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')) + + # 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() + + block(19, spend=out[6]) + yield rejected() + + # 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')) + + # 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() + + block(22, spend=out[5]) + yield rejected() + + # 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]) + 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]) + # 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() + + # Make the next block one byte bigger and check that it fails + tip(15) + b24 = block(24, spend=out[6]) + script_length = MAX_BLOCK_BASE_SIZE - len(b24.serialize()) - 69 + 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')) + + block(25, spend=out[7]) + yield rejected() + + # 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]) + 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')) + + # Extend the b26 chain to make sure bitcoind isn't accepting b26 + block(27, spend=out[7]) + yield rejected(False) + + # Now try a too-large-coinbase script + tip(15) + b28 = 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')) + + # Extend the b28 chain to make sure bitcoind isn't accepting b28 + block(29, spend=out[7]) + yield rejected(False) + + # b30 has a max-sized coinbase scriptSig. + tip(23) + b30 = block(30) + b30.vtx[0].vin[0].scriptSig = b'\x00' * 100 + b30.vtx[0].rehash() + b30 = update_block(30, []) + yield accepted() + save_spendable_output() + + # b31 - b35 - check sigops of OP_CHECKMULTISIG / OP_CHECKMULTISIGVERIFY / OP_CHECKSIGVERIFY + # + # genesis -> ... -> b30 (7) -> b31 (8) -> b33 (9) -> b35 (10) + # \-> b36 (11) + # \-> b34 (10) + # \-> b32 (9) + # + + # 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) + assert_equal(get_legacy_sigopcount_block(b31), MAX_BLOCK_SIGOPS) + yield accepted() + save_spendable_output() + + # this goes over the limit because the coinbase has one sigop + too_many_multisigs = CScript([OP_CHECKMULTISIG] * (MAX_BLOCK_SIGOPS // 20)) + b32 = 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')) + + + # 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() + + 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')) + + + # CHECKSIGVERIFY + 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() + + 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')) + + + # Check spending of a transaction in a block which failed to connect + # + # b6 (3) + # b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7) -> b31 (8) -> b33 (9) -> b35 (10) + # \-> b37 (11) + # \-> b38 (11/37) + # + + # save 37's spendable output, but then double-spend out11 to invalidate the block + tip(35) + b37 = 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')) + + # 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')) + + # Check P2SH SigOp counting + # + # + # 13 (4) -> b15 (5) -> b23 (6) -> b30 (7) -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b41 (12) + # \-> b40 (12) + # + # b39 - create some P2SH outputs that will require 6 sigops to spend: + # + # 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) + 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_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.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_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()) + while(total_size < MAX_BLOCK_BASE_SIZE): + tx_new = 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 + tx_last = tx_new + b39_outputs += 1 + + b39 = update_block(39, []) + yield accepted() + save_spendable_output() + + + # Test sigops in P2SH redeem scripts + # + # b40 creates 3333 tx's spending the 6-sigop P2SH outputs from b39 for a total of 19998 sigops. + # The first tx has one sigop and then at the end we add 2 more to put us just over the max. + # + # b41 does the same, less one, so it has the maximum sigops permitted. + # + tip(39) + b40 = 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): + tx = CTransaction() + tx.vout.append(CTxOut(1, CScript([OP_TRUE]))) + tx.vin.append(CTxIn(lastOutpoint, b'')) + # second input is corresponding P2SH output from b39 + tx.vin.append(CTxIn(COutPoint(b39.vtx[i].sha256, 0), b'')) + # Note: must pass the redeem_script (not p2sh_script) to the signature hash function + (sighash, err) = SignatureHash(redeem_script, tx, 1, SIGHASH_ALL) + sig = self.coinbase_key.sign(sighash) + bytes(bytearray([SIGHASH_ALL])) + scriptSig = CScript([sig, redeem_script]) + + tx.vin[1].scriptSig = scriptSig + tx.rehash() + new_txs.append(tx) + lastOutpoint = COutPoint(tx.sha256, 0) + + b40_sigops_to_fill = MAX_BLOCK_SIGOPS - (numTxes * b39_sigops_per_output + sigops) + 1 + tx = CTransaction() + tx.vin.append(CTxIn(lastOutpoint, b'')) + 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')) + + # same as b40, but one less sigop + tip(39) + block(41, spend=None) + 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() + + # 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() + + + # Test a number of really invalid scenarios + # + # -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b44 (14) + # \-> ??? (15) + + # 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. + height = self.block_heights[self.tip.sha256] + 1 + coinbase = create_coinbase(height, self.coinbase_pubkey) + b44 = CBlock() + b44.nTime = self.tip.nTime + 1 + b44.hashPrevBlock = self.tip.sha256 + b44.nBits = 0x207fffff + b44.vtx.append(coinbase) + b44.hashMerkleRoot = b44.calc_merkle_root() + b44.solve() + self.tip = b44 + self.block_heights[b44.sha256] = height + self.blocks[44] = b44 + yield accepted() + + # A block with a non-coinbase as the first tx + non_coinbase = create_tx(out[15].tx, out[15].n, 1) + b45 = CBlock() + b45.nTime = self.tip.nTime + 1 + b45.hashPrevBlock = self.tip.sha256 + b45.nBits = 0x207fffff + b45.vtx.append(non_coinbase) + b45.hashMerkleRoot = b45.calc_merkle_root() + b45.calc_sha256() + b45.solve() + 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')) + + # A block with no txns + tip(44) + b46 = CBlock() + 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.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')) + + # A block with invalid work + tip(44) + b47 = block(47, solve=False) + target = uint256_from_compact(b47.nBits) + while b47.sha256 < target: #changed > to < + b47.nNonce += 1 + b47.rehash() + yield rejected(RejectResult(16, b'high-hash')) + + # A block with timestamp > 2 hrs in the future + tip(44) + b48 = block(48, solve=False) + b48.nTime = int(time.time()) + 60 * 60 * 3 + b48.solve() + yield rejected(RejectResult(16, b'time-too-new')) + + # A block with an invalid merkle hash + tip(44) + b49 = block(49) + b49.hashMerkleRoot += 1 + b49.solve() + yield rejected(RejectResult(16, b'bad-txnmrklroot')) + + # A block with an incorrect POW limit + tip(44) + b50 = block(50) + b50.nBits = b50.nBits - 1 + b50.solve() + yield rejected(RejectResult(16, b'bad-diffbits')) + + # A block with two coinbase txns + tip(44) + b51 = block(51) + cb2 = create_coinbase(51, self.coinbase_pubkey) + b51 = update_block(51, [cb2]) + yield rejected(RejectResult(16, b'bad-cb-multiple')) + + # A block w/ duplicate txns + # 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')) + + # 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() + + # invalid timestamp (b35 is 5 blocks back, so its time is MedianTimePast) + b54 = block(54, spend=out[15]) + b54.nTime = b35.nTime - 1 + b54.solve() + yield rejected(RejectResult(16, b'time-too-old')) + + # valid timestamp + tip(53) + b55 = block(55, spend=out[15]) + b55.nTime = b35.nTime + update_block(55, []) + yield accepted() + save_spendable_output() + + + # Test CVE-2012-2459 + # + # -> 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 + # affecting the merkle root of a block, while still invalidating it. + # See: src/consensus/merkle.h + # + # b57 has three txns: coinbase, tx, tx1. The merkle root computation will duplicate tx. + # Result: OK + # + # b56 copies b57 but duplicates tx1 and does not recalculate the block hash. So it has a valid merkle + # root but duplicate transactions. + # Result: Fails + # + # b57p2 has six transactions in its merkle tree: + # - coinbase, tx, tx1, tx2, tx3, tx4 + # Merkle root calculation will duplicate as necessary. + # Result: OK. + # + # b56p2 copies b57p2 but adds both tx3 and tx4. The purpose of the test is to make sure the code catches + # duplicate txns that are not next to one another with the "bad-txns-duplicate" error (which indicates + # 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]) + + # b56 - copy b57, add a duplicate tx + tip(55) + b56 = copy.deepcopy(b57) + self.blocks[56] = b56 + assert_equal(len(b56.vtx),3) + b56 = update_block(56, [tx1]) + assert_equal(b56.hash, b57.hash) + yield rejected(RejectResult(16, b'bad-txns-duplicate')) + + # 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]) + + # b56p2 - copy b57p2, duplicate two non-consecutive tx's + 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')) + + tip("57p2") + yield accepted() + + tip(57) + yield rejected() #rejected because 57p2 seen first + save_spendable_output() + + # Test a few invalid tx types + # + # -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) + # \-> ??? (17) + # + + # tx with prevout.n out of range + tip(57) + b58 = 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')) + + # 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')) + + # reset to good chain + tip(57) + b60 = block(60, spend=out[17]) + yield accepted() + save_spendable_output() + + # Test BIP30 + # + # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) + # \-> b61 (18) + # + # Blocks are not allowed to contain a transaction whose id matches that of an earlier, + # 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 + b61.vtx[0].rehash() + b61 = update_block(61, []) + assert_equal(b60.vtx[0].serialize(), b61.vtx[0].serialize()) + yield rejected(RejectResult(16, b'bad-txns-BIP30')) + + + # 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) + tx = CTransaction() + 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.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')) + + + # 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) + 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')) + + + # 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, + # does not cause a subsequent, identical block with canonical encoding to be rejected. The test does not + # care whether the bloated block is accepted or rejected; it only cares that the second block is accepted. + # + # What matters is that the receiving node should not reject the bloated block, and then reject the canonical + # block on the basis that it's the same as an already-rejected block (which would be a consensus failure.) + # + # -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) + # \ + # b64a (18) + # 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]) + + # make it a "broken_block," with non-canonical serialization + b64a = CBrokenBlock(regular_block) + b64a.initialize(regular_block) + self.blocks["64a"] = b64a + self.tip = b64a + tx = CTransaction() + + # use canonical serialization to calculate size + script_length = MAX_BLOCK_BASE_SIZE - len(b64a.normal_serialize()) - 69 + 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]) + assert_equal(len(b64a.serialize()), MAX_BLOCK_BASE_SIZE + 8) + yield TestInstance([[self.tip, None]]) + + # comptool workaround: to make sure b64 is delivered, manually erase b64a from blockstore + self.test.block_store.erase(b64a.sha256) + + 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() + + # 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() + + # 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')) + + # Attempt to double-spend a transaction created in a block + # + # -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) + # \-> 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')) + + # More tests of block subsidy + # + # -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20) + # \-> b68 (20) + # + # b68 - coinbase with an extra 10 satoshis, + # creates a tx that has 9 satoshis from out[20] go to fees + # this fails because the coinbase is trying to claim 1 satoshi too much in fees + # + # 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() + + # 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]) + 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')) + + + # Test accepting an invalid block which has the same hash as a valid one (via merkle tree tricks) + # + # -> b53 (14) -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20) -> b72 (21) + # \-> 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 = 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 + self.blocks[71] = b71 + + assert_equal(len(b71.vtx), 4) + 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() + + + # Test some invalid scripts and MAX_BLOCK_SIGOPS + # + # -> b55 (15) -> b57 (16) -> b60 (17) -> b64 (18) -> b65 (19) -> b69 (20) -> b72 (21) + # \-> b** (22) + # + + # b73 - tx with excessive sigops that are placed after an excessively large script element. + # The purpose of the test is to make sure those sigops are counted. + # + # script is a bytearray of size 20,526 + # + # bytearray[0-19,998] : OP_CHECKSIG + # bytearray[19,999] : OP_PUSHDATA4 + # 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) + 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 + + 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 + + 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')) + + # b74/75 - if we push an invalid script element, all prevous sigops are counted, + # but sigops after the element are not counted. + # + # The invalid script element is that the push_data indicates that + # there will be a large amount of data (0xffffff bytes), but we only + # provide a much smaller number. These bytes are CHECKSIGS so they would + # cause b75 to fail for excessive sigops, if those bytes were counted. + # + # 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 + 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) + 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] = 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() + + # Check that if we push an element filled with CHECKSIGs, they are not counted + tip(75) + b76 = 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() + + # Test transaction resurrection + # + # -> b77 (24) -> b78 (25) -> b79 (26) + # \-> b80 (25) -> b81 (26) -> b82 (27) + # + # b78 creates a tx, which is spent in b79. After b82, both should be in mempool + # + # The tx'es must be unsigned and pass the node's mempool policy. It is unsigned for the + # rather obscure reason that the Python signature code does not distinguish between + # Low-S and High-S values (whereas the bitcoin code has custom code which does so); + # as a result of which, the odds are 50% that the python code will use the right + # value and the transaction will be accepted into the mempool. Until we modify the + # test framework to support low-S signing, we are out of luck. + # + # 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() + + # mempool should be empty + assert_equal(len(self.nodes[0].getrawmempool()), 0) + + tip(77) + block(80, spend=out[25]) + yield rejected() + save_spendable_output() + + block(81, spend=out[26]) + yield rejected() # other chain is same length + save_spendable_output() + + block(82, spend=out[27]) + yield accepted() # now this chain is longer, triggers re-org + save_spendable_output() + + # now check that tx78 and tx79 have been put back into the peer's mempool + mempool = self.nodes[0].getrawmempool() + assert_equal(len(mempool), 2) + 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) + 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) + + tx2 = create_and_sign_tx(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() + + + # 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])) + tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) + tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) + tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) + tx1.vout.append(CTxOut(0, CScript([OP_TRUE]))) + 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.vout.append(CTxOut(0, CScript([OP_RETURN]))) + tx3 = 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.vout.append(CTxOut(0, CScript([OP_RETURN]))) + tx5 = create_tx(tx1, 4, 0, CScript([OP_RETURN])) + + update_block(84, [tx1,tx2,tx3,tx4,tx5]) + yield accepted() + save_spendable_output() + + tip(83) + block(85, spend=out[29]) + yield rejected() + + block(86, spend=out[30]) + yield accepted() + + tip(84) + block(87, spend=out[30]) + yield rejected() + save_spendable_output() + + block(88, spend=out[31]) + yield accepted() + 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 + + + +if __name__ == '__main__': + FullBlockTest().main() |