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// Copyright (c) 2014-2024, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "blocksdat_file.h"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "bcutil"
namespace po = boost::program_options;
using namespace cryptonote;
using namespace epee;
namespace
{
std::string refresh_string = "\r \r";
}
bool BlocksdatFile::open_writer(const boost::filesystem::path& file_path, uint64_t block_stop)
{
const boost::filesystem::path dir_path = file_path.parent_path();
if (!dir_path.empty())
{
if (boost::filesystem::exists(dir_path))
{
if (!boost::filesystem::is_directory(dir_path))
{
MFATAL("export directory path is a file: " << dir_path);
return false;
}
}
else
{
if (!boost::filesystem::create_directory(dir_path))
{
MFATAL("Failed to create directory " << dir_path);
return false;
}
}
}
m_raw_data_file = new std::ofstream();
MINFO("creating file");
m_raw_data_file->open(file_path.string(), std::ios_base::binary | std::ios_base::out | std::ios::trunc);
if (m_raw_data_file->fail())
return false;
initialize_file(block_stop);
return true;
}
bool BlocksdatFile::initialize_file(uint64_t block_stop)
{
const uint32_t nblocks = (block_stop + 1) / HASH_OF_HASHES_STEP;
unsigned char nblocksc[4];
nblocksc[0] = nblocks & 0xff;
nblocksc[1] = (nblocks >> 8) & 0xff;
nblocksc[2] = (nblocks >> 16) & 0xff;
nblocksc[3] = (nblocks >> 24) & 0xff;
// 4 bytes little endian
*m_raw_data_file << nblocksc[0];
*m_raw_data_file << nblocksc[1];
*m_raw_data_file << nblocksc[2];
*m_raw_data_file << nblocksc[3];
return true;
}
void BlocksdatFile::write_block(const crypto::hash& block_hash, uint64_t weight)
{
m_hashes.push_back(block_hash);
m_weights.push_back(weight);
while (m_hashes.size() >= HASH_OF_HASHES_STEP)
{
crypto::hash hash;
crypto::cn_fast_hash(m_hashes.data(), HASH_OF_HASHES_STEP * sizeof(crypto::hash), hash);
memmove(m_hashes.data(), m_hashes.data() + HASH_OF_HASHES_STEP, (m_hashes.size() - HASH_OF_HASHES_STEP) * sizeof(crypto::hash));
m_hashes.resize(m_hashes.size() - HASH_OF_HASHES_STEP);
const std::string data_hashes(hash.data, sizeof(hash));
*m_raw_data_file << data_hashes;
crypto::cn_fast_hash(m_weights.data(), HASH_OF_HASHES_STEP * sizeof(uint64_t), hash);
memmove(m_weights.data(), m_weights.data() + HASH_OF_HASHES_STEP, (m_weights.size() - HASH_OF_HASHES_STEP) * sizeof(uint64_t));
m_weights.resize(m_weights.size() - HASH_OF_HASHES_STEP);
const std::string data_weights(hash.data, sizeof(hash));
*m_raw_data_file << data_weights;
}
}
bool BlocksdatFile::close()
{
if (m_raw_data_file->fail())
return false;
m_raw_data_file->flush();
delete m_raw_data_file;
return true;
}
bool BlocksdatFile::store_blockchain_raw(Blockchain* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_file, uint64_t requested_block_stop)
{
uint64_t num_blocks_written = 0;
m_blockchain_storage = _blockchain_storage;
uint64_t progress_interval = 100;
block b;
uint64_t block_start = 0;
uint64_t block_stop = 0;
MINFO("source blockchain height: " << m_blockchain_storage->get_current_blockchain_height()-1);
if ((requested_block_stop > 0) && (requested_block_stop < m_blockchain_storage->get_current_blockchain_height()))
{
MINFO("Using requested block height: " << requested_block_stop);
block_stop = requested_block_stop;
}
else
{
block_stop = m_blockchain_storage->get_current_blockchain_height() - 1;
MINFO("Using block height of source blockchain: " << block_stop);
}
MINFO("Storing blocks raw data...");
if (!BlocksdatFile::open_writer(output_file, block_stop))
{
MFATAL("failed to open raw file for write");
return false;
}
for (m_cur_height = block_start; m_cur_height <= block_stop; ++m_cur_height)
{
// this method's height refers to 0-based height (genesis block = height 0)
crypto::hash hash = m_blockchain_storage->get_block_id_by_height(m_cur_height);
uint64_t weight = m_blockchain_storage->get_db().get_block_weight(m_cur_height);
write_block(hash, weight);
if (m_cur_height % NUM_BLOCKS_PER_CHUNK == 0) {
num_blocks_written += NUM_BLOCKS_PER_CHUNK;
}
if (m_cur_height % progress_interval == 0) {
std::cout << refresh_string;
std::cout << "block " << m_cur_height << "/" << block_stop << std::flush;
}
}
// print message for last block, which may not have been printed yet due to progress_interval
std::cout << refresh_string;
std::cout << "block " << m_cur_height-1 << "/" << block_stop << ENDL;
MINFO("Number of blocks exported: " << num_blocks_written);
return BlocksdatFile::close();
}
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