410 lines
16 KiB
C++
410 lines
16 KiB
C++
// Copyright (c) 2012-2013 The Cryptonote developers
|
|
// Distributed under the MIT/X11 software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#include <algorithm>
|
|
#include <boost/filesystem.hpp>
|
|
#include <unordered_set>
|
|
#include <vector>
|
|
|
|
#include "tx_pool.h"
|
|
#include "cryptonote_format_utils.h"
|
|
#include "cryptonote_boost_serialization.h"
|
|
#include "cryptonote_config.h"
|
|
#include "blockchain_storage.h"
|
|
#include "common/boost_serialization_helper.h"
|
|
#include "common/int-util.h"
|
|
#include "misc_language.h"
|
|
#include "warnings.h"
|
|
#include "crypto/hash.h"
|
|
|
|
DISABLE_VS_WARNINGS(4244 4345 4503) //'boost::foreach_detail_::or_' : decorated name length exceeded, name was truncated
|
|
|
|
namespace cryptonote
|
|
{
|
|
//---------------------------------------------------------------------------------
|
|
tx_memory_pool::tx_memory_pool(blockchain_storage& bchs): m_blockchain(bchs)
|
|
{
|
|
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::add_tx(const transaction &tx, /*const crypto::hash& tx_prefix_hash,*/ const crypto::hash &id, size_t blob_size, tx_verification_context& tvc, bool kept_by_block)
|
|
{
|
|
|
|
|
|
if(!check_inputs_types_supported(tx))
|
|
{
|
|
tvc.m_verifivation_failed = true;
|
|
return false;
|
|
}
|
|
|
|
uint64_t inputs_amount = 0;
|
|
if(!get_inputs_money_amount(tx, inputs_amount))
|
|
{
|
|
tvc.m_verifivation_failed = true;
|
|
return false;
|
|
}
|
|
|
|
uint64_t outputs_amount = get_outs_money_amount(tx);
|
|
|
|
if(outputs_amount >= inputs_amount)
|
|
{
|
|
LOG_PRINT_L0("transaction use more money then it has: use " << outputs_amount << ", have " << inputs_amount);
|
|
tvc.m_verifivation_failed = true;
|
|
return false;
|
|
}
|
|
|
|
//check key images for transaction if it is not kept by block
|
|
if(!kept_by_block)
|
|
{
|
|
if(have_tx_keyimges_as_spent(tx))
|
|
{
|
|
LOG_ERROR("Transaction with id= "<< id << " used already spent key images");
|
|
tvc.m_verifivation_failed = true;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
crypto::hash max_used_block_id = null_hash;
|
|
uint64_t max_used_block_height = 0;
|
|
bool ch_inp_res = m_blockchain.check_tx_inputs(tx, max_used_block_height, max_used_block_id);
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
if(!ch_inp_res)
|
|
{
|
|
if(kept_by_block)
|
|
{
|
|
//anyway add this transaction to pool, because it related to block
|
|
auto txd_p = m_transactions.insert(transactions_container::value_type(id, tx_details()));
|
|
CHECK_AND_ASSERT_MES(txd_p.second, false, "transaction already exists at inserting in memory pool");
|
|
txd_p.first->second.blob_size = blob_size;
|
|
txd_p.first->second.tx = tx;
|
|
txd_p.first->second.fee = inputs_amount - outputs_amount;
|
|
txd_p.first->second.max_used_block_id = null_hash;
|
|
txd_p.first->second.max_used_block_height = 0;
|
|
txd_p.first->second.kept_by_block = kept_by_block;
|
|
tvc.m_verifivation_impossible = true;
|
|
tvc.m_added_to_pool = true;
|
|
}else
|
|
{
|
|
LOG_PRINT_L0("tx used wrong inputs, rejected");
|
|
tvc.m_verifivation_failed = true;
|
|
return false;
|
|
}
|
|
}else
|
|
{
|
|
//update transactions container
|
|
auto txd_p = m_transactions.insert(transactions_container::value_type(id, tx_details()));
|
|
CHECK_AND_ASSERT_MES(txd_p.second, false, "intrnal error: transaction already exists at inserting in memorypool");
|
|
txd_p.first->second.blob_size = blob_size;
|
|
txd_p.first->second.tx = tx;
|
|
txd_p.first->second.kept_by_block = kept_by_block;
|
|
txd_p.first->second.fee = inputs_amount - outputs_amount;
|
|
txd_p.first->second.max_used_block_id = max_used_block_id;
|
|
txd_p.first->second.max_used_block_height = max_used_block_height;
|
|
txd_p.first->second.last_failed_height = 0;
|
|
txd_p.first->second.last_failed_id = null_hash;
|
|
tvc.m_added_to_pool = true;
|
|
|
|
if(txd_p.first->second.fee > 0)
|
|
tvc.m_should_be_relayed = true;
|
|
}
|
|
|
|
tvc.m_verifivation_failed = true;
|
|
//update image_keys container, here should everything goes ok.
|
|
BOOST_FOREACH(const auto& in, tx.vin)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(in, const txin_to_key, txin, false);
|
|
std::unordered_set<crypto::hash>& kei_image_set = m_spent_key_images[txin.k_image];
|
|
CHECK_AND_ASSERT_MES(kept_by_block || kei_image_set.size() == 0, false, "internal error: keeped_by_block=" << kept_by_block
|
|
<< ", kei_image_set.size()=" << kei_image_set.size() << ENDL << "txin.k_image=" << txin.k_image << ENDL
|
|
<< "tx_id=" << id );
|
|
auto ins_res = kei_image_set.insert(id);
|
|
CHECK_AND_ASSERT_MES(ins_res.second, false, "internal error: try to insert duplicate iterator in key_image set");
|
|
}
|
|
|
|
tvc.m_verifivation_failed = false;
|
|
//succeed
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::add_tx(const transaction &tx, tx_verification_context& tvc, bool keeped_by_block)
|
|
{
|
|
crypto::hash h = null_hash;
|
|
size_t blob_size = 0;
|
|
get_transaction_hash(tx, h, blob_size);
|
|
return add_tx(tx, h, blob_size, tvc, keeped_by_block);
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::remove_transaction_keyimages(const transaction& tx)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
BOOST_FOREACH(const txin_v& vi, tx.vin)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(vi, const txin_to_key, txin, false);
|
|
auto it = m_spent_key_images.find(txin.k_image);
|
|
CHECK_AND_ASSERT_MES(it != m_spent_key_images.end(), false, "failed to find transaction input in key images. img=" << txin.k_image << ENDL
|
|
<< "transaction id = " << get_transaction_hash(tx));
|
|
std::unordered_set<crypto::hash>& key_image_set = it->second;
|
|
CHECK_AND_ASSERT_MES(key_image_set.size(), false, "empty key_image set, img=" << txin.k_image << ENDL
|
|
<< "transaction id = " << get_transaction_hash(tx));
|
|
|
|
auto it_in_set = key_image_set.find(get_transaction_hash(tx));
|
|
CHECK_AND_ASSERT_MES(key_image_set.size(), false, "transaction id not found in key_image set, img=" << txin.k_image << ENDL
|
|
<< "transaction id = " << get_transaction_hash(tx));
|
|
key_image_set.erase(it_in_set);
|
|
if(!key_image_set.size())
|
|
{
|
|
//it is now empty hash container for this key_image
|
|
m_spent_key_images.erase(it);
|
|
}
|
|
|
|
}
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::take_tx(const crypto::hash &id, transaction &tx, size_t& blob_size, uint64_t& fee)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
auto it = m_transactions.find(id);
|
|
if(it == m_transactions.end())
|
|
return false;
|
|
|
|
tx = it->second.tx;
|
|
blob_size = it->second.blob_size;
|
|
fee = it->second.fee;
|
|
remove_transaction_keyimages(it->second.tx);
|
|
m_transactions.erase(it);
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
size_t tx_memory_pool::get_transactions_count()
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
return m_transactions.size();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::get_transactions(std::list<transaction>& txs)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
BOOST_FOREACH(const auto& tx_vt, m_transactions)
|
|
txs.push_back(tx_vt.second.tx);
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::get_transaction(const crypto::hash& id, transaction& tx)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
auto it = m_transactions.find(id);
|
|
if(it == m_transactions.end())
|
|
return false;
|
|
tx = it->second.tx;
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::on_blockchain_inc(uint64_t new_block_height, const crypto::hash& top_block_id)
|
|
{
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::on_blockchain_dec(uint64_t new_block_height, const crypto::hash& top_block_id)
|
|
{
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_tx(const crypto::hash &id)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
if(m_transactions.count(id))
|
|
return true;
|
|
return false;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_tx_keyimges_as_spent(const transaction& tx)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
BOOST_FOREACH(const auto& in, tx.vin)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(in, const txin_to_key, tokey_in, true);//should never fail
|
|
if(have_tx_keyimg_as_spent(tokey_in.k_image))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_tx_keyimg_as_spent(const crypto::key_image& key_im)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
return m_spent_key_images.end() != m_spent_key_images.find(key_im);
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::lock()
|
|
{
|
|
m_transactions_lock.lock();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
void tx_memory_pool::unlock()
|
|
{
|
|
m_transactions_lock.unlock();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::is_transaction_ready_to_go(tx_details& txd)
|
|
{
|
|
//not the best implementation at this time, sorry :(
|
|
//check is ring_signature already checked ?
|
|
if(txd.max_used_block_id == null_hash)
|
|
{//not checked, lets try to check
|
|
|
|
if(txd.last_failed_id != null_hash && m_blockchain.get_current_blockchain_height() > txd.last_failed_height && txd.last_failed_id == m_blockchain.get_block_id_by_height(txd.last_failed_height))
|
|
return false;//we already sure that this tx is broken for this height
|
|
|
|
if(!m_blockchain.check_tx_inputs(txd.tx, txd.max_used_block_height, txd.max_used_block_id))
|
|
{
|
|
txd.last_failed_height = m_blockchain.get_current_blockchain_height()-1;
|
|
txd.last_failed_id = m_blockchain.get_block_id_by_height(txd.last_failed_height);
|
|
return false;
|
|
}
|
|
}else
|
|
{
|
|
if(txd.max_used_block_height >= m_blockchain.get_current_blockchain_height())
|
|
return false;
|
|
if(m_blockchain.get_block_id_by_height(txd.max_used_block_height) != txd.max_used_block_id)
|
|
{
|
|
//if we already failed on this height and id, skip actual ring signature check
|
|
if(txd.last_failed_id == m_blockchain.get_block_id_by_height(txd.last_failed_height))
|
|
return false;
|
|
//check ring signature again, it is possible (with very small chance) that this transaction become again valid
|
|
if(!m_blockchain.check_tx_inputs(txd.tx, txd.max_used_block_height, txd.max_used_block_id))
|
|
{
|
|
txd.last_failed_height = m_blockchain.get_current_blockchain_height()-1;
|
|
txd.last_failed_id = m_blockchain.get_block_id_by_height(txd.last_failed_height);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
//if we here, transaction seems valid, but, anyway, check for key_images collisions with blockchain, just to be sure
|
|
if(m_blockchain.have_tx_keyimges_as_spent(txd.tx))
|
|
return false;
|
|
|
|
//transaction is ok.
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::have_key_images(const std::unordered_set<crypto::key_image>& k_images, const transaction& tx)
|
|
{
|
|
for(size_t i = 0; i!= tx.vin.size(); i++)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(tx.vin[i], const txin_to_key, itk, false);
|
|
if(k_images.count(itk.k_image))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::append_key_images(std::unordered_set<crypto::key_image>& k_images, const transaction& tx)
|
|
{
|
|
for(size_t i = 0; i!= tx.vin.size(); i++)
|
|
{
|
|
CHECKED_GET_SPECIFIC_VARIANT(tx.vin[i], const txin_to_key, itk, false);
|
|
auto i_res = k_images.insert(itk.k_image);
|
|
CHECK_AND_ASSERT_MES(i_res.second, false, "internal error: key images pool cache - inserted duplicate image in set: " << itk.k_image);
|
|
}
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
std::string tx_memory_pool::print_pool(bool short_format)
|
|
{
|
|
std::stringstream ss;
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
BOOST_FOREACH(transactions_container::value_type& txe, m_transactions)
|
|
{
|
|
if(short_format)
|
|
{
|
|
tx_details& txd = txe.second;
|
|
ss << "id: " << txe.first << ENDL
|
|
<< "blob_size: " << txd.blob_size << ENDL
|
|
<< "fee: " << txd.fee << ENDL
|
|
<< "kept_by_block: " << txd.kept_by_block << ENDL
|
|
<< "max_used_block_height: " << txd.max_used_block_height << ENDL
|
|
<< "max_used_block_id: " << txd.max_used_block_id << ENDL
|
|
<< "last_failed_height: " << txd.last_failed_height << ENDL
|
|
<< "last_failed_id: " << txd.last_failed_id << ENDL;
|
|
}else
|
|
{
|
|
tx_details& txd = txe.second;
|
|
ss << "id: " << txe.first << ENDL
|
|
<< obj_to_json_str(txd.tx) << ENDL
|
|
<< "blob_size: " << txd.blob_size << ENDL
|
|
<< "fee: " << txd.fee << ENDL
|
|
<< "kept_by_block: " << txd.kept_by_block << ENDL
|
|
<< "max_used_block_height: " << txd.max_used_block_height << ENDL
|
|
<< "max_used_block_id: " << txd.max_used_block_id << ENDL
|
|
<< "last_failed_height: " << txd.last_failed_height << ENDL
|
|
<< "last_failed_id: " << txd.last_failed_id << ENDL;
|
|
}
|
|
|
|
}
|
|
return ss.str();
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::fill_block_template(block &bl, size_t median_size, uint64_t already_generated_coins, size_t &total_size, uint64_t &fee)
|
|
{
|
|
CRITICAL_REGION_LOCAL(m_transactions_lock);
|
|
|
|
total_size = 0;
|
|
fee = 0;
|
|
|
|
size_t max_total_size = 2 * median_size - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
|
|
std::unordered_set<crypto::key_image> k_images;
|
|
BOOST_FOREACH(transactions_container::value_type& tx, m_transactions)
|
|
{
|
|
if (max_total_size < total_size + tx.second.blob_size)
|
|
continue;
|
|
|
|
if (!is_transaction_ready_to_go(tx.second) || have_key_images(k_images, tx.second.tx))
|
|
continue;
|
|
|
|
bl.tx_hashes.push_back(tx.first);
|
|
total_size += tx.second.blob_size;
|
|
fee += tx.second.fee;
|
|
append_key_images(k_images, tx.second.tx);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::init(const std::string& config_folder)
|
|
{
|
|
m_config_folder = config_folder;
|
|
std::string state_file_path = config_folder + "/" + CRYPTONOTE_POOLDATA_FILENAME;
|
|
boost::system::error_code ec;
|
|
if(!boost::filesystem::exists(state_file_path, ec))
|
|
return true;
|
|
bool res = tools::unserialize_obj_from_file(*this, state_file_path);
|
|
if(!res)
|
|
{
|
|
LOG_PRINT_L0("Failed to load memory pool from file " << state_file_path);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------
|
|
bool tx_memory_pool::deinit()
|
|
{
|
|
if (!tools::create_directories_if_necessary(m_config_folder))
|
|
{
|
|
LOG_PRINT_L0("Failed to create data directory: " << m_config_folder);
|
|
return false;
|
|
}
|
|
|
|
std::string state_file_path = m_config_folder + "/" + CRYPTONOTE_POOLDATA_FILENAME;
|
|
bool res = tools::serialize_obj_to_file(*this, state_file_path);
|
|
if(!res)
|
|
{
|
|
LOG_PRINT_L0("Failed to serialize memory pool to file " << state_file_path);
|
|
}
|
|
return true;
|
|
}
|
|
}
|