638 lines
23 KiB
C++
638 lines
23 KiB
C++
// Copyright (c) 2011-2016 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "TransactionPool.h"
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#include <algorithm>
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#include <ctime>
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#include <vector>
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#include <unordered_set>
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#include <boost/filesystem.hpp>
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#include "Common/int-util.h"
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#include "Common/Util.h"
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#include "crypto/hash.h"
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#include "Serialization/SerializationTools.h"
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#include "Serialization/BinarySerializationTools.h"
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#include "CryptoNoteFormatUtils.h"
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#include "CryptoNoteTools.h"
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#include "CryptoNoteConfig.h"
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using namespace Logging;
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#undef ERROR
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namespace CryptoNote {
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//---------------------------------------------------------------------------------
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// BlockTemplate
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//---------------------------------------------------------------------------------
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class BlockTemplate {
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public:
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bool addTransaction(const Crypto::Hash& txid, const Transaction& tx) {
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if (!canAdd(tx))
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return false;
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for (const auto& in : tx.inputs) {
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if (in.type() == typeid(KeyInput)) {
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auto r = m_keyImages.insert(boost::get<KeyInput>(in).keyImage);
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(void)r; //just to make compiler to shut up
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assert(r.second);
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} else if (in.type() == typeid(MultisignatureInput)) {
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const auto& msig = boost::get<MultisignatureInput>(in);
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auto r = m_usedOutputs.insert(std::make_pair(msig.amount, msig.outputIndex));
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(void)r; //just to make compiler to shut up
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assert(r.second);
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}
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}
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m_txHashes.push_back(txid);
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return true;
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}
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const std::vector<Crypto::Hash>& getTransactions() const {
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return m_txHashes;
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}
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private:
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bool canAdd(const Transaction& tx) {
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for (const auto& in : tx.inputs) {
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if (in.type() == typeid(KeyInput)) {
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if (m_keyImages.count(boost::get<KeyInput>(in).keyImage)) {
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return false;
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}
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} else if (in.type() == typeid(MultisignatureInput)) {
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const auto& msig = boost::get<MultisignatureInput>(in);
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if (m_usedOutputs.count(std::make_pair(msig.amount, msig.outputIndex))) {
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return false;
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}
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}
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}
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return true;
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}
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std::unordered_set<Crypto::KeyImage> m_keyImages;
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std::set<std::pair<uint64_t, uint64_t>> m_usedOutputs;
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std::vector<Crypto::Hash> m_txHashes;
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};
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using CryptoNote::BlockInfo;
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//---------------------------------------------------------------------------------
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tx_memory_pool::tx_memory_pool(
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const CryptoNote::Currency& currency,
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CryptoNote::ITransactionValidator& validator,
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CryptoNote::ITimeProvider& timeProvider,
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Logging::ILogger& log) :
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m_currency(currency),
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m_validator(validator),
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m_timeProvider(timeProvider),
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m_txCheckInterval(60, timeProvider),
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m_fee_index(boost::get<1>(m_transactions)),
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logger(log, "txpool") {
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::add_tx(const Transaction &tx, /*const Crypto::Hash& tx_prefix_hash,*/ const Crypto::Hash &id, size_t blobSize, tx_verification_context& tvc, bool keptByBlock) {
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if (!check_inputs_types_supported(tx)) {
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tvc.m_verifivation_failed = true;
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return false;
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}
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uint64_t inputs_amount = 0;
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if (!get_inputs_money_amount(tx, inputs_amount)) {
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tvc.m_verifivation_failed = true;
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return false;
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}
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uint64_t outputs_amount = get_outs_money_amount(tx);
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if (outputs_amount > inputs_amount) {
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logger(INFO) << "transaction use more money then it has: use " << m_currency.formatAmount(outputs_amount) <<
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", have " << m_currency.formatAmount(inputs_amount);
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tvc.m_verifivation_failed = true;
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return false;
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}
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const uint64_t fee = inputs_amount - outputs_amount;
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bool isFusionTransaction = fee == 0 && m_currency.isFusionTransaction(tx, blobSize);
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if (!keptByBlock && !isFusionTransaction && fee < m_currency.minimumFee()) {
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logger(INFO) << "transaction fee is not enough: " << m_currency.formatAmount(fee) <<
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", minimum fee: " << m_currency.formatAmount(m_currency.minimumFee());
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tvc.m_verifivation_failed = true;
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tvc.m_tx_fee_too_small = true;
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return false;
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}
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//check key images for transaction if it is not kept by block
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if (!keptByBlock) {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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if (haveSpentInputs(tx)) {
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logger(INFO) << "Transaction with id= " << id << " used already spent inputs";
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tvc.m_verifivation_failed = true;
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return false;
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}
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}
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BlockInfo maxUsedBlock;
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// check inputs
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bool inputsValid = m_validator.checkTransactionInputs(tx, maxUsedBlock);
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if (!inputsValid) {
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if (!keptByBlock) {
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logger(INFO) << "tx used wrong inputs, rejected";
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tvc.m_verifivation_failed = true;
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return false;
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}
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maxUsedBlock.clear();
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tvc.m_verifivation_impossible = true;
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}
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if (!keptByBlock) {
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bool sizeValid = m_validator.checkTransactionSize(blobSize);
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if (!sizeValid) {
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logger(INFO) << "tx too big, rejected";
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tvc.m_verifivation_failed = true;
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return false;
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}
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}
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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if (!keptByBlock && m_recentlyDeletedTransactions.find(id) != m_recentlyDeletedTransactions.end()) {
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logger(INFO) << "Trying to add recently deleted transaction. Ignore: " << id;
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tvc.m_verifivation_failed = false;
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tvc.m_should_be_relayed = false;
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tvc.m_added_to_pool = false;
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return true;
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}
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// add to pool
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{
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TransactionDetails txd;
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txd.id = id;
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txd.blobSize = blobSize;
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txd.tx = tx;
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txd.fee = fee;
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txd.keptByBlock = keptByBlock;
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txd.receiveTime = m_timeProvider.now();
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txd.maxUsedBlock = maxUsedBlock;
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txd.lastFailedBlock.clear();
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auto txd_p = m_transactions.insert(std::move(txd));
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if (!(txd_p.second)) {
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logger(ERROR, BRIGHT_RED) << "transaction already exists at inserting in memory pool";
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return false;
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}
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m_paymentIdIndex.add(txd.tx);
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m_timestampIndex.add(txd.receiveTime, txd.id);
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}
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tvc.m_added_to_pool = true;
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tvc.m_should_be_relayed = inputsValid && (fee > 0 || isFusionTransaction);
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tvc.m_verifivation_failed = true;
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if (!addTransactionInputs(id, tx, keptByBlock))
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return false;
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tvc.m_verifivation_failed = false;
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//succeed
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return true;
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::add_tx(const Transaction &tx, tx_verification_context& tvc, bool keeped_by_block) {
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Crypto::Hash h = NULL_HASH;
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size_t blobSize = 0;
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getObjectHash(tx, h, blobSize);
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return add_tx(tx, h, blobSize, tvc, keeped_by_block);
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::take_tx(const Crypto::Hash &id, Transaction &tx, size_t& blobSize, uint64_t& fee) {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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auto it = m_transactions.find(id);
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if (it == m_transactions.end()) {
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return false;
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}
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auto& txd = *it;
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tx = txd.tx;
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blobSize = txd.blobSize;
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fee = txd.fee;
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removeTransaction(it);
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return true;
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}
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//---------------------------------------------------------------------------------
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size_t tx_memory_pool::get_transactions_count() const {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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return m_transactions.size();
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::get_transactions(std::list<Transaction>& txs) const {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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for (const auto& tx_vt : m_transactions) {
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txs.push_back(tx_vt.tx);
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}
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::get_difference(const std::vector<Crypto::Hash>& known_tx_ids, std::vector<Crypto::Hash>& new_tx_ids, std::vector<Crypto::Hash>& deleted_tx_ids) const {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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std::unordered_set<Crypto::Hash> ready_tx_ids;
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for (const auto& tx : m_transactions) {
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TransactionCheckInfo checkInfo(tx);
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if (is_transaction_ready_to_go(tx.tx, checkInfo)) {
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ready_tx_ids.insert(tx.id);
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}
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}
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std::unordered_set<Crypto::Hash> known_set(known_tx_ids.begin(), known_tx_ids.end());
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for (auto it = ready_tx_ids.begin(), e = ready_tx_ids.end(); it != e;) {
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auto known_it = known_set.find(*it);
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if (known_it != known_set.end()) {
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known_set.erase(known_it);
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it = ready_tx_ids.erase(it);
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}
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else {
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++it;
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}
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}
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new_tx_ids.assign(ready_tx_ids.begin(), ready_tx_ids.end());
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deleted_tx_ids.assign(known_set.begin(), known_set.end());
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::on_blockchain_inc(uint64_t new_block_height, const Crypto::Hash& top_block_id) {
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return true;
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::on_blockchain_dec(uint64_t new_block_height, const Crypto::Hash& top_block_id) {
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return true;
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::have_tx(const Crypto::Hash &id) const {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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if (m_transactions.count(id)) {
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return true;
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}
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return false;
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::lock() const {
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m_transactions_lock.lock();
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::unlock() const {
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m_transactions_lock.unlock();
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}
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std::unique_lock<std::recursive_mutex> tx_memory_pool::obtainGuard() const {
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return std::unique_lock<std::recursive_mutex>(m_transactions_lock);
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::is_transaction_ready_to_go(const Transaction& tx, TransactionCheckInfo& txd) const {
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if (!m_validator.checkTransactionInputs(tx, txd.maxUsedBlock, txd.lastFailedBlock))
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return false;
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//if we here, transaction seems valid, but, anyway, check for key_images collisions with blockchain, just to be sure
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if (m_validator.haveSpentKeyImages(tx))
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return false;
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//transaction is ok.
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return true;
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}
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//---------------------------------------------------------------------------------
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std::string tx_memory_pool::print_pool(bool short_format) const {
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std::stringstream ss;
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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for (const auto& txd : m_fee_index) {
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ss << "id: " << txd.id << std::endl;
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if (!short_format) {
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ss << storeToJson(txd.tx) << std::endl;
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}
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ss << "blobSize: " << txd.blobSize << std::endl
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<< "fee: " << m_currency.formatAmount(txd.fee) << std::endl
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<< "keptByBlock: " << (txd.keptByBlock ? 'T' : 'F') << std::endl
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<< "max_used_block_height: " << txd.maxUsedBlock.height << std::endl
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<< "max_used_block_id: " << txd.maxUsedBlock.id << std::endl
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<< "last_failed_height: " << txd.lastFailedBlock.height << std::endl
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<< "last_failed_id: " << txd.lastFailedBlock.id << std::endl
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<< "received: " << std::ctime(&txd.receiveTime) << std::endl;
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}
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return ss.str();
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::fill_block_template(Block& bl, size_t median_size, size_t maxCumulativeSize,
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uint64_t already_generated_coins, size_t& total_size, uint64_t& fee) {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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total_size = 0;
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fee = 0;
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size_t max_total_size = 2 * median_size - m_currency.minerTxBlobReservedSize();
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max_total_size = std::min(max_total_size, maxCumulativeSize);
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BlockTemplate blockTemplate;
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for (auto it = m_fee_index.rbegin(); it != m_fee_index.rend() && it->fee == 0; ++it) {
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const auto& txd = *it;
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if (m_currency.fusionTxMaxSize() < total_size + txd.blobSize) {
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continue;
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}
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TransactionCheckInfo checkInfo(txd);
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if (is_transaction_ready_to_go(txd.tx, checkInfo) && blockTemplate.addTransaction(txd.id, txd.tx)) {
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total_size += txd.blobSize;
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}
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}
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for (auto i = m_fee_index.begin(); i != m_fee_index.end(); ++i) {
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const auto& txd = *i;
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size_t blockSizeLimit = (txd.fee == 0) ? median_size : max_total_size;
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if (blockSizeLimit < total_size + txd.blobSize) {
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continue;
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}
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TransactionCheckInfo checkInfo(txd);
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bool ready = is_transaction_ready_to_go(txd.tx, checkInfo);
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// update item state
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m_fee_index.modify(i, [&checkInfo](TransactionCheckInfo& item) {
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item = checkInfo;
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});
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if (ready && blockTemplate.addTransaction(txd.id, txd.tx)) {
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total_size += txd.blobSize;
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fee += txd.fee;
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}
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}
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bl.transactionHashes = blockTemplate.getTransactions();
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return true;
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::init(const std::string& config_folder) {
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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m_config_folder = config_folder;
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std::string state_file_path = config_folder + "/" + m_currency.txPoolFileName();
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boost::system::error_code ec;
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if (!boost::filesystem::exists(state_file_path, ec)) {
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return true;
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}
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if (!loadFromBinaryFile(*this, state_file_path)) {
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logger(ERROR) << "Failed to load memory pool from file " << state_file_path;
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m_transactions.clear();
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m_spent_key_images.clear();
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m_spentOutputs.clear();
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m_paymentIdIndex.clear();
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m_timestampIndex.clear();
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} else {
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buildIndices();
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}
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removeExpiredTransactions();
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// Ignore deserialization error
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return true;
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::deinit() {
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if (!Tools::create_directories_if_necessary(m_config_folder)) {
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logger(INFO) << "Failed to create data directory: " << m_config_folder;
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return false;
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}
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std::string state_file_path = m_config_folder + "/" + m_currency.txPoolFileName();
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if (!storeToBinaryFile(*this, state_file_path)) {
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logger(INFO) << "Failed to serialize memory pool to file " << state_file_path;
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}
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m_paymentIdIndex.clear();
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m_timestampIndex.clear();
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return true;
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}
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#define CURRENT_MEMPOOL_ARCHIVE_VER 1
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void serialize(CryptoNote::tx_memory_pool::TransactionDetails& td, ISerializer& s) {
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s(td.id, "id");
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s(td.blobSize, "blobSize");
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s(td.fee, "fee");
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s(td.tx, "tx");
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s(td.maxUsedBlock.height, "maxUsedBlock.height");
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s(td.maxUsedBlock.id, "maxUsedBlock.id");
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s(td.lastFailedBlock.height, "lastFailedBlock.height");
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s(td.lastFailedBlock.id, "lastFailedBlock.id");
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s(td.keptByBlock, "keptByBlock");
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s(reinterpret_cast<uint64_t&>(td.receiveTime), "receiveTime");
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::serialize(ISerializer& s) {
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uint8_t version = CURRENT_MEMPOOL_ARCHIVE_VER;
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s(version, "version");
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if (version != CURRENT_MEMPOOL_ARCHIVE_VER) {
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return;
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}
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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if (s.type() == ISerializer::INPUT) {
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m_transactions.clear();
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readSequence<TransactionDetails>(std::inserter(m_transactions, m_transactions.end()), "transactions", s);
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} else {
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writeSequence<TransactionDetails>(m_transactions.begin(), m_transactions.end(), "transactions", s);
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}
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KV_MEMBER(m_spent_key_images);
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KV_MEMBER(m_spentOutputs);
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KV_MEMBER(m_recentlyDeletedTransactions);
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}
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//---------------------------------------------------------------------------------
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void tx_memory_pool::on_idle() {
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m_txCheckInterval.call([this](){ return removeExpiredTransactions(); });
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}
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//---------------------------------------------------------------------------------
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bool tx_memory_pool::removeExpiredTransactions() {
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bool somethingRemoved = false;
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{
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std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
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uint64_t now = m_timeProvider.now();
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for (auto it = m_recentlyDeletedTransactions.begin(); it != m_recentlyDeletedTransactions.end();) {
|
|
uint64_t elapsedTimeSinceDeletion = now - it->second;
|
|
if (elapsedTimeSinceDeletion > m_currency.numberOfPeriodsToForgetTxDeletedFromPool() * m_currency.mempoolTxLiveTime()) {
|
|
it = m_recentlyDeletedTransactions.erase(it);
|
|
} else {
|
|
++it;
|
|
}
|
|
}
|
|
|
|
for (auto it = m_transactions.begin(); it != m_transactions.end();) {
|
|
uint64_t txAge = now - it->receiveTime;
|
|
bool remove = txAge > (it->keptByBlock ? m_currency.mempoolTxFromAltBlockLiveTime() : m_currency.mempoolTxLiveTime());
|
|
|
|
if (remove) {
|
|
logger(TRACE) << "Tx " << it->id << " removed from tx pool due to outdated, age: " << txAge;
|
|
m_recentlyDeletedTransactions.emplace(it->id, now);
|
|
it = removeTransaction(it);
|
|
somethingRemoved = true;
|
|
} else {
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (somethingRemoved) {
|
|
m_observerManager.notify(&ITxPoolObserver::txDeletedFromPool);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
tx_memory_pool::tx_container_t::iterator tx_memory_pool::removeTransaction(tx_memory_pool::tx_container_t::iterator i) {
|
|
removeTransactionInputs(i->id, i->tx, i->keptByBlock);
|
|
m_paymentIdIndex.remove(i->tx);
|
|
m_timestampIndex.remove(i->receiveTime, i->id);
|
|
return m_transactions.erase(i);
|
|
}
|
|
|
|
bool tx_memory_pool::removeTransactionInputs(const Crypto::Hash& tx_id, const Transaction& tx, bool keptByBlock) {
|
|
for (const auto& in : tx.inputs) {
|
|
if (in.type() == typeid(KeyInput)) {
|
|
const auto& txin = boost::get<KeyInput>(in);
|
|
auto it = m_spent_key_images.find(txin.keyImage);
|
|
if (!(it != m_spent_key_images.end())) { logger(ERROR, BRIGHT_RED) << "failed to find transaction input in key images. img=" << txin.keyImage << std::endl
|
|
<< "transaction id = " << tx_id; return false; }
|
|
std::unordered_set<Crypto::Hash>& key_image_set = it->second;
|
|
if (!(!key_image_set.empty())) { logger(ERROR, BRIGHT_RED) << "empty key_image set, img=" << txin.keyImage << std::endl
|
|
<< "transaction id = " << tx_id; return false; }
|
|
|
|
auto it_in_set = key_image_set.find(tx_id);
|
|
if (!(it_in_set != key_image_set.end())) { logger(ERROR, BRIGHT_RED) << "transaction id not found in key_image set, img=" << txin.keyImage << std::endl
|
|
<< "transaction id = " << tx_id; return false; }
|
|
key_image_set.erase(it_in_set);
|
|
if (key_image_set.empty()) {
|
|
//it is now empty hash container for this key_image
|
|
m_spent_key_images.erase(it);
|
|
}
|
|
} else if (in.type() == typeid(MultisignatureInput)) {
|
|
if (!keptByBlock) {
|
|
const auto& msig = boost::get<MultisignatureInput>(in);
|
|
auto output = GlobalOutput(msig.amount, msig.outputIndex);
|
|
assert(m_spentOutputs.count(output));
|
|
m_spentOutputs.erase(output);
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::addTransactionInputs(const Crypto::Hash& id, const Transaction& tx, bool keptByBlock) {
|
|
// should not fail
|
|
for (const auto& in : tx.inputs) {
|
|
if (in.type() == typeid(KeyInput)) {
|
|
const auto& txin = boost::get<KeyInput>(in);
|
|
std::unordered_set<Crypto::Hash>& kei_image_set = m_spent_key_images[txin.keyImage];
|
|
if (!(keptByBlock || kei_image_set.size() == 0)) {
|
|
logger(ERROR, BRIGHT_RED)
|
|
<< "internal error: keptByBlock=" << keptByBlock
|
|
<< ", kei_image_set.size()=" << kei_image_set.size() << ENDL
|
|
<< "txin.keyImage=" << txin.keyImage << ENDL << "tx_id=" << id;
|
|
return false;
|
|
}
|
|
auto ins_res = kei_image_set.insert(id);
|
|
if (!(ins_res.second)) {
|
|
logger(ERROR, BRIGHT_RED) << "internal error: try to insert duplicate iterator in key_image set";
|
|
return false;
|
|
}
|
|
} else if (in.type() == typeid(MultisignatureInput)) {
|
|
if (!keptByBlock) {
|
|
const auto& msig = boost::get<MultisignatureInput>(in);
|
|
auto r = m_spentOutputs.insert(GlobalOutput(msig.amount, msig.outputIndex));
|
|
(void)r;
|
|
assert(r.second);
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::haveSpentInputs(const Transaction& tx) const {
|
|
for (const auto& in : tx.inputs) {
|
|
if (in.type() == typeid(KeyInput)) {
|
|
const auto& tokey_in = boost::get<KeyInput>(in);
|
|
if (m_spent_key_images.count(tokey_in.keyImage)) {
|
|
return true;
|
|
}
|
|
} else if (in.type() == typeid(MultisignatureInput)) {
|
|
const auto& msig = boost::get<MultisignatureInput>(in);
|
|
if (m_spentOutputs.count(GlobalOutput(msig.amount, msig.outputIndex))) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool tx_memory_pool::addObserver(ITxPoolObserver* observer) {
|
|
return m_observerManager.add(observer);
|
|
}
|
|
|
|
bool tx_memory_pool::removeObserver(ITxPoolObserver* observer) {
|
|
return m_observerManager.remove(observer);
|
|
}
|
|
|
|
void tx_memory_pool::buildIndices() {
|
|
std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
|
|
for (auto it = m_transactions.begin(); it != m_transactions.end(); it++) {
|
|
m_paymentIdIndex.add(it->tx);
|
|
m_timestampIndex.add(it->receiveTime, it->id);
|
|
}
|
|
}
|
|
|
|
bool tx_memory_pool::getTransactionIdsByPaymentId(const Crypto::Hash& paymentId, std::vector<Crypto::Hash>& transactionIds) {
|
|
std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
|
|
return m_paymentIdIndex.find(paymentId, transactionIds);
|
|
}
|
|
|
|
bool tx_memory_pool::getTransactionIdsByTimestamp(uint64_t timestampBegin, uint64_t timestampEnd, uint32_t transactionsNumberLimit, std::vector<Crypto::Hash>& hashes, uint64_t& transactionsNumberWithinTimestamps) {
|
|
std::lock_guard<std::recursive_mutex> lock(m_transactions_lock);
|
|
return m_timestampIndex.find(timestampBegin, timestampEnd, transactionsNumberLimit, hashes, transactionsNumberWithinTimestamps);
|
|
}
|
|
}
|