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// Copyright (c) 2020-2022 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 <kernel/mempool_entry.h>
#include <policy/fees.h>
#include <policy/fees_args.h>
#include <primitives/transaction.h>
#include <streams.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/fuzz/util/mempool.h>
#include <test/util/setup_common.h>
#include <memory>
#include <optional>
#include <vector>
namespace {
const BasicTestingSetup* g_setup;
} // namespace
void initialize_policy_estimator()
{
static const auto testing_setup = MakeNoLogFileContext<>();
g_setup = testing_setup.get();
}
FUZZ_TARGET(policy_estimator, .init = initialize_policy_estimator)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
bool good_data{true};
CBlockPolicyEstimator block_policy_estimator{FeeestPath(*g_setup->m_node.args), DEFAULT_ACCEPT_STALE_FEE_ESTIMATES};
LIMITED_WHILE(good_data && fuzzed_data_provider.ConsumeBool(), 10'000)
{
CallOneOf(
fuzzed_data_provider,
[&] {
const std::optional<CMutableTransaction> mtx = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider, TX_WITH_WITNESS);
if (!mtx) {
good_data = false;
return;
}
const CTransaction tx{*mtx};
const CTxMemPoolEntry& entry = ConsumeTxMemPoolEntry(fuzzed_data_provider, tx);
const auto tx_submitted_in_package = fuzzed_data_provider.ConsumeBool();
const auto tx_has_mempool_parents = fuzzed_data_provider.ConsumeBool();
const auto tx_info = NewMempoolTransactionInfo(entry.GetSharedTx(), entry.GetFee(),
entry.GetTxSize(), entry.GetHeight(),
/*mempool_limit_bypassed=*/false,
tx_submitted_in_package,
/*chainstate_is_current=*/true,
tx_has_mempool_parents);
block_policy_estimator.processTransaction(tx_info);
if (fuzzed_data_provider.ConsumeBool()) {
(void)block_policy_estimator.removeTx(tx.GetHash());
}
},
[&] {
std::list<CTxMemPoolEntry> mempool_entries;
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000)
{
const std::optional<CMutableTransaction> mtx = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider, TX_WITH_WITNESS);
if (!mtx) {
good_data = false;
break;
}
const CTransaction tx{*mtx};
mempool_entries.emplace_back(CTxMemPoolEntry::ExplicitCopy, ConsumeTxMemPoolEntry(fuzzed_data_provider, tx));
}
std::vector<RemovedMempoolTransactionInfo> txs;
txs.reserve(mempool_entries.size());
for (const CTxMemPoolEntry& mempool_entry : mempool_entries) {
txs.emplace_back(mempool_entry);
}
block_policy_estimator.processBlock(txs, fuzzed_data_provider.ConsumeIntegral<unsigned int>());
},
[&] {
(void)block_policy_estimator.removeTx(ConsumeUInt256(fuzzed_data_provider));
},
[&] {
block_policy_estimator.FlushUnconfirmed();
});
(void)block_policy_estimator.estimateFee(fuzzed_data_provider.ConsumeIntegral<int>());
EstimationResult result;
(void)block_policy_estimator.estimateRawFee(fuzzed_data_provider.ConsumeIntegral<int>(), fuzzed_data_provider.ConsumeFloatingPoint<double>(), fuzzed_data_provider.PickValueInArray(ALL_FEE_ESTIMATE_HORIZONS), fuzzed_data_provider.ConsumeBool() ? &result : nullptr);
FeeCalculation fee_calculation;
(void)block_policy_estimator.estimateSmartFee(fuzzed_data_provider.ConsumeIntegral<int>(), fuzzed_data_provider.ConsumeBool() ? &fee_calculation : nullptr, fuzzed_data_provider.ConsumeBool());
(void)block_policy_estimator.HighestTargetTracked(fuzzed_data_provider.PickValueInArray(ALL_FEE_ESTIMATE_HORIZONS));
}
{
FuzzedFileProvider fuzzed_file_provider{fuzzed_data_provider};
AutoFile fuzzed_auto_file{fuzzed_file_provider.open()};
block_policy_estimator.Write(fuzzed_auto_file);
block_policy_estimator.Read(fuzzed_auto_file);
}
}
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