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// Copyright (c) 2017-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <consensus/validation.h>
#include <key_io.h>
#include <policy/packages.h>
#include <policy/policy.h>
#include <primitives/transaction.h>
#include <script/script.h>
#include <script/standard.h>
#include <test/util/setup_common.h>
#include <validation.h>
#include <boost/test/unit_test.hpp>
BOOST_AUTO_TEST_SUITE(txvalidation_tests)
/**
* Ensure that the mempool won't accept coinbase transactions.
*/
BOOST_FIXTURE_TEST_CASE(tx_mempool_reject_coinbase, TestChain100Setup)
{
CScript scriptPubKey = CScript() << ToByteVector(coinbaseKey.GetPubKey()) << OP_CHECKSIG;
CMutableTransaction coinbaseTx;
coinbaseTx.nVersion = 1;
coinbaseTx.vin.resize(1);
coinbaseTx.vout.resize(1);
coinbaseTx.vin[0].scriptSig = CScript() << OP_11 << OP_EQUAL;
coinbaseTx.vout[0].nValue = 1 * CENT;
coinbaseTx.vout[0].scriptPubKey = scriptPubKey;
BOOST_CHECK(CTransaction(coinbaseTx).IsCoinBase());
LOCK(cs_main);
unsigned int initialPoolSize = m_node.mempool->size();
const MempoolAcceptResult result = AcceptToMemoryPool(m_node.chainman->ActiveChainstate(), *m_node.mempool, MakeTransactionRef(coinbaseTx),
false /* bypass_limits */);
BOOST_CHECK(result.m_result_type == MempoolAcceptResult::ResultType::INVALID);
// Check that the transaction hasn't been added to mempool.
BOOST_CHECK_EQUAL(m_node.mempool->size(), initialPoolSize);
// Check that the validation state reflects the unsuccessful attempt.
BOOST_CHECK(result.m_state.IsInvalid());
BOOST_CHECK_EQUAL(result.m_state.GetRejectReason(), "coinbase");
BOOST_CHECK(result.m_state.GetResult() == TxValidationResult::TX_CONSENSUS);
}
// Create placeholder transactions that have no meaning.
inline CTransactionRef create_placeholder_tx(size_t num_inputs, size_t num_outputs)
{
CMutableTransaction mtx = CMutableTransaction();
mtx.vin.resize(num_inputs);
mtx.vout.resize(num_outputs);
auto random_script = CScript() << ToByteVector(InsecureRand256()) << ToByteVector(InsecureRand256());
for (size_t i{0}; i < num_inputs; ++i) {
mtx.vin[i].prevout.hash = InsecureRand256();
mtx.vin[i].prevout.n = 0;
mtx.vin[i].scriptSig = random_script;
}
for (size_t o{0}; o < num_outputs; ++o) {
mtx.vout[o].nValue = 1 * CENT;
mtx.vout[o].scriptPubKey = random_script;
}
return MakeTransactionRef(mtx);
}
BOOST_FIXTURE_TEST_CASE(package_tests, TestChain100Setup)
{
LOCK(cs_main);
unsigned int initialPoolSize = m_node.mempool->size();
// Parent and Child Package
CKey parent_key;
parent_key.MakeNewKey(true);
CScript parent_locking_script = GetScriptForDestination(PKHash(parent_key.GetPubKey()));
auto mtx_parent = CreateValidMempoolTransaction(/* input_transaction */ m_coinbase_txns[0], /* vout */ 0,
/* input_height */ 0, /* input_signing_key */ coinbaseKey,
/* output_destination */ parent_locking_script,
/* output_amount */ CAmount(49 * COIN), /* submit */ false);
CTransactionRef tx_parent = MakeTransactionRef(mtx_parent);
CKey child_key;
child_key.MakeNewKey(true);
CScript child_locking_script = GetScriptForDestination(PKHash(child_key.GetPubKey()));
auto mtx_child = CreateValidMempoolTransaction(/* input_transaction */ tx_parent, /* vout */ 0,
/* input_height */ 101, /* input_signing_key */ parent_key,
/* output_destination */ child_locking_script,
/* output_amount */ CAmount(48 * COIN), /* submit */ false);
CTransactionRef tx_child = MakeTransactionRef(mtx_child);
const auto result_parent_child = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, {tx_parent, tx_child}, /* test_accept */ true);
BOOST_CHECK_MESSAGE(result_parent_child.m_state.IsValid(),
"Package validation unexpectedly failed: " << result_parent_child.m_state.GetRejectReason());
auto it_parent = result_parent_child.m_tx_results.find(tx_parent->GetWitnessHash());
auto it_child = result_parent_child.m_tx_results.find(tx_child->GetWitnessHash());
BOOST_CHECK(it_parent != result_parent_child.m_tx_results.end());
BOOST_CHECK_MESSAGE(it_parent->second.m_state.IsValid(),
"Package validation unexpectedly failed: " << it_parent->second.m_state.GetRejectReason());
BOOST_CHECK(it_child != result_parent_child.m_tx_results.end());
BOOST_CHECK_MESSAGE(it_child->second.m_state.IsValid(),
"Package validation unexpectedly failed: " << it_child->second.m_state.GetRejectReason());
// Packages can't have more than 25 transactions.
Package package_too_many;
package_too_many.reserve(MAX_PACKAGE_COUNT + 1);
for (size_t i{0}; i < MAX_PACKAGE_COUNT + 1; ++i) {
package_too_many.emplace_back(create_placeholder_tx(1, 1));
}
auto result_too_many = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, package_too_many, /* test_accept */ true);
BOOST_CHECK(result_too_many.m_state.IsInvalid());
BOOST_CHECK_EQUAL(result_too_many.m_state.GetResult(), PackageValidationResult::PCKG_POLICY);
BOOST_CHECK_EQUAL(result_too_many.m_state.GetRejectReason(), "package-too-many-transactions");
// Packages can't have a total size of more than 101KvB.
CTransactionRef large_ptx = create_placeholder_tx(150, 150);
Package package_too_large;
auto size_large = GetVirtualTransactionSize(*large_ptx);
size_t total_size{0};
while (total_size <= MAX_PACKAGE_SIZE * 1000) {
package_too_large.push_back(large_ptx);
total_size += size_large;
}
BOOST_CHECK(package_too_large.size() <= MAX_PACKAGE_COUNT);
auto result_too_large = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, package_too_large, /* test_accept */ true);
BOOST_CHECK(result_too_large.m_state.IsInvalid());
BOOST_CHECK_EQUAL(result_too_large.m_state.GetResult(), PackageValidationResult::PCKG_POLICY);
BOOST_CHECK_EQUAL(result_too_large.m_state.GetRejectReason(), "package-too-large");
// A single, giant transaction submitted through ProcessNewPackage fails on single tx policy.
CTransactionRef giant_ptx = create_placeholder_tx(999, 999);
BOOST_CHECK(GetVirtualTransactionSize(*giant_ptx) > MAX_PACKAGE_SIZE * 1000);
auto result_single_large = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, {giant_ptx}, /* test_accept */ true);
BOOST_CHECK(result_single_large.m_state.IsInvalid());
BOOST_CHECK_EQUAL(result_single_large.m_state.GetResult(), PackageValidationResult::PCKG_TX);
BOOST_CHECK_EQUAL(result_single_large.m_state.GetRejectReason(), "transaction failed");
auto it_giant_tx = result_single_large.m_tx_results.find(giant_ptx->GetWitnessHash());
BOOST_CHECK(it_giant_tx != result_single_large.m_tx_results.end());
BOOST_CHECK_EQUAL(it_giant_tx->second.m_state.GetRejectReason(), "tx-size");
// Check that mempool size hasn't changed.
BOOST_CHECK_EQUAL(m_node.mempool->size(), initialPoolSize);
}
BOOST_AUTO_TEST_SUITE_END()
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