// Copyright (c) 2014-2023, 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 "bootstrap_serialization.h" #include "serialization/binary_utils.h" // dump_binary(), parse_binary() #include "bootstrap_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 { // This number was picked by taking the leading 4 bytes from this output: // echo Monero bootstrap file | sha1sum const uint32_t blockchain_raw_magic = 0x28721586; const uint32_t header_size = 1024; std::string refresh_string = "\r \r"; } bool BootstrapFile::open_writer(const boost::filesystem::path& file_path, uint64_t start_block, uint64_t stop_block) { 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(); bool do_initialize_file = false; uint64_t num_blocks = 0, block_first = 0; if (! boost::filesystem::exists(file_path)) { MDEBUG("creating file"); do_initialize_file = true; num_blocks = 0; } else { std::streampos dummy_pos; uint64_t dummy_height = 0; num_blocks = count_blocks(file_path.string(), dummy_pos, dummy_height, block_first); MDEBUG("appending to existing file with height: " << num_blocks+block_first-1 << " total blocks: " << num_blocks); } m_height = num_blocks+block_first; if (do_initialize_file) m_raw_data_file->open(file_path.string(), std::ios_base::binary | std::ios_base::out | std::ios::trunc); else m_raw_data_file->open(file_path.string(), std::ios_base::binary | std::ios_base::out | std::ios::app | std::ios::ate); if (m_raw_data_file->fail()) return false; m_output_stream = new boost::iostreams::stream>(m_buffer); if (m_output_stream == nullptr) return false; if (do_initialize_file) initialize_file(start_block, stop_block); return true; } bool BootstrapFile::initialize_file(uint64_t first_block, uint64_t last_block) { const uint32_t file_magic = blockchain_raw_magic; std::string blob; if (! ::serialization::dump_binary(file_magic, blob)) { throw std::runtime_error("Error in serialization of file magic"); } *m_raw_data_file << blob; bootstrap::file_info bfi; bfi.major_version = 1; bfi.minor_version = 0; bfi.header_size = header_size; bootstrap::blocks_info bbi; bbi.block_first = first_block; bbi.block_last = last_block; bbi.block_last_pos = 0; buffer_type buffer2; boost::iostreams::stream> output_stream_header(buffer2); uint32_t bd_size = 0; blobdata bd = t_serializable_object_to_blob(bfi); MDEBUG("bootstrap::file_info size: " << bd.size()); bd_size = bd.size(); if (! ::serialization::dump_binary(bd_size, blob)) { throw std::runtime_error("Error in serialization of bootstrap::file_info size"); } output_stream_header << blob; output_stream_header << bd; bd = t_serializable_object_to_blob(bbi); MDEBUG("bootstrap::blocks_info size: " << bd.size()); bd_size = bd.size(); if (! ::serialization::dump_binary(bd_size, blob)) { throw std::runtime_error("Error in serialization of bootstrap::blocks_info size"); } output_stream_header << blob; output_stream_header << bd; output_stream_header.flush(); output_stream_header << std::string(header_size-buffer2.size(), 0); // fill in rest with null bytes output_stream_header.flush(); std::copy(buffer2.begin(), buffer2.end(), std::ostreambuf_iterator(*m_raw_data_file)); return true; } void BootstrapFile::flush_chunk() { m_output_stream->flush(); uint32_t chunk_size = m_buffer.size(); // MTRACE("chunk_size " << chunk_size); if (chunk_size > BUFFER_SIZE) { MWARNING("WARNING: chunk_size " << chunk_size << " > BUFFER_SIZE " << BUFFER_SIZE); } std::string blob; if (! ::serialization::dump_binary(chunk_size, blob)) { throw std::runtime_error("Error in serialization of chunk size"); } *m_raw_data_file << blob; if (m_max_chunk < chunk_size) { m_max_chunk = chunk_size; } long pos_before = m_raw_data_file->tellp(); std::copy(m_buffer.begin(), m_buffer.end(), std::ostreambuf_iterator(*m_raw_data_file)); m_raw_data_file->flush(); long pos_after = m_raw_data_file->tellp(); long num_chars_written = pos_after - pos_before; if (static_cast(num_chars_written) != chunk_size) { MFATAL("Error writing chunk: height: " << m_cur_height << " chunk_size: " << chunk_size << " num chars written: " << num_chars_written); throw std::runtime_error("Error writing chunk"); } m_buffer.clear(); delete m_output_stream; m_output_stream = new boost::iostreams::stream>(m_buffer); MDEBUG("flushed chunk: chunk_size: " << chunk_size); } void BootstrapFile::write_block(block& block) { bootstrap::block_package bp; bp.block = block; std::vector txs; uint64_t block_height = boost::get(block.miner_tx.vin.front()).height; // now add all regular transactions for (const auto& tx_id : block.tx_hashes) { if (tx_id == crypto::null_hash) { throw std::runtime_error("Aborting: tx == null_hash"); } transaction tx = m_blockchain_storage->get_db().get_tx(tx_id); txs.push_back(tx); } // these non-coinbase txs will be serialized using this structure bp.txs = txs; // These three attributes are currently necessary for a fast import that adds blocks without verification. bool include_extra_block_data = true; if (include_extra_block_data) { size_t block_weight = m_blockchain_storage->get_db().get_block_weight(block_height); difficulty_type cumulative_difficulty = m_blockchain_storage->get_db().get_block_cumulative_difficulty(block_height); uint64_t coins_generated = m_blockchain_storage->get_db().get_block_already_generated_coins(block_height); bp.block_weight = block_weight; bp.cumulative_difficulty = cumulative_difficulty; bp.coins_generated = coins_generated; } blobdata bd = t_serializable_object_to_blob(bp); m_output_stream->write((const char*)bd.data(), bd.size()); } bool BootstrapFile::close() { if (m_raw_data_file->fail()) return false; m_raw_data_file->flush(); delete m_output_stream; delete m_raw_data_file; return true; } bool BootstrapFile::store_blockchain_raw(Blockchain* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_file, uint64_t start_block, uint64_t requested_block_stop) { uint64_t num_blocks_written = 0; m_max_chunk = 0; m_blockchain_storage = _blockchain_storage; m_tx_pool = _tx_pool; uint64_t progress_interval = 100; MINFO("Storing blocks raw data..."); block b; // block_start, block_stop use 0-based height. m_height uses 1-based height. So to resume export // from last exported block, block_start doesn't need to add 1 here, as it's already at the next // height. 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); } if (!BootstrapFile::open_writer(output_file, start_block, block_stop)) { MFATAL("failed to open raw file for write"); return false; } uint64_t block_start = m_height ? m_height : start_block; MINFO("Starting block height: " << block_start); 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); m_blockchain_storage->get_block_by_hash(hash, b); write_block(b); if (m_cur_height % NUM_BLOCKS_PER_CHUNK == 0) { flush_chunk(); 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 << "\r" << std::flush; } } // NOTE: use of NUM_BLOCKS_PER_CHUNK is a placeholder in case multi-block chunks are later supported. if (m_cur_height % NUM_BLOCKS_PER_CHUNK != 0) { flush_chunk(); } // 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); if (num_blocks_written > 0) MINFO("Largest chunk: " << m_max_chunk << " bytes"); return BootstrapFile::close(); } uint64_t BootstrapFile::seek_to_first_chunk(std::ifstream& import_file, uint8_t &major_version, uint8_t &minor_version, uint64_t &block_first, uint64_t &block_last) { uint32_t file_magic; std::string str1; char buf1[2048]; import_file.read(buf1, sizeof(file_magic)); if (! import_file) throw std::runtime_error("Error reading expected number of bytes"); str1.assign(buf1, sizeof(file_magic)); if (! ::serialization::parse_binary(str1, file_magic)) throw std::runtime_error("Error in deserialization of file_magic"); if (file_magic != blockchain_raw_magic) { MFATAL("bootstrap file not recognized"); throw std::runtime_error("Aborting"); } else MINFO("bootstrap file recognized"); uint32_t buflen_file_info; import_file.read(buf1, sizeof(buflen_file_info)); str1.assign(buf1, sizeof(buflen_file_info)); if (! import_file) throw std::runtime_error("Error reading expected number of bytes"); if (! ::serialization::parse_binary(str1, buflen_file_info)) throw std::runtime_error("Error in deserialization of buflen_file_info"); MINFO("bootstrap::file_info size: " << buflen_file_info); if (buflen_file_info > sizeof(buf1)) throw std::runtime_error("Error: bootstrap::file_info size exceeds buffer size"); import_file.read(buf1, buflen_file_info); if (! import_file) throw std::runtime_error("Error reading expected number of bytes"); str1.assign(buf1, buflen_file_info); bootstrap::file_info bfi; if (! ::serialization::parse_binary(str1, bfi)) throw std::runtime_error("Error in deserialization of bootstrap::file_info"); MINFO("bootstrap file v" << unsigned(bfi.major_version) << "." << unsigned(bfi.minor_version)); MINFO("bootstrap magic size: " << sizeof(file_magic)); MINFO("bootstrap header size: " << bfi.header_size); uint32_t buflen_blocks_info; import_file.read(buf1, sizeof(buflen_blocks_info)); str1.assign(buf1, sizeof(buflen_blocks_info)); if (! import_file) throw std::runtime_error("Error reading expected number of bytes"); if (! ::serialization::parse_binary(str1, buflen_blocks_info)) throw std::runtime_error("Error in deserialization of buflen_blocks_info"); MINFO("bootstrap::blocks_info size: " << buflen_blocks_info); if (buflen_blocks_info > sizeof(buf1)) throw std::runtime_error("Error: bootstrap::blocks_info size exceeds buffer size"); import_file.read(buf1, buflen_blocks_info); if (! import_file) throw std::runtime_error("Error reading expected number of bytes"); str1.assign(buf1, buflen_blocks_info); bootstrap::blocks_info bbi; if (! ::serialization::parse_binary(str1, bbi)) throw std::runtime_error("Error in deserialization of bootstrap::blocks_info"); MINFO("bootstrap first block:" << bbi.block_first); MINFO("bootstrap last block:" << bbi.block_last); uint64_t full_header_size = sizeof(file_magic) + bfi.header_size; import_file.seekg(full_header_size); major_version = bfi.major_version; minor_version = bfi.minor_version; block_first = bbi.block_first; block_last = bbi.block_last; return full_header_size; } uint64_t BootstrapFile::count_bytes(std::ifstream& import_file, uint64_t blocks, uint64_t& h, bool& quit) { uint64_t bytes_read = 0; uint32_t chunk_size; char buf1[sizeof(chunk_size)]; std::string str1; h = 0; while (1) { import_file.read(buf1, sizeof(chunk_size)); if (!import_file) { std::cout << refresh_string; MDEBUG("End of file reached"); quit = true; break; } bytes_read += sizeof(chunk_size); str1.assign(buf1, sizeof(chunk_size)); if (! ::serialization::parse_binary(str1, chunk_size)) throw std::runtime_error("Error in deserialization of chunk_size"); MDEBUG("chunk_size: " << chunk_size); if (chunk_size > BUFFER_SIZE) { std::cout << refresh_string; MWARNING("WARNING: chunk_size " << chunk_size << " > BUFFER_SIZE " << BUFFER_SIZE << " height: " << h-1 << ", offset " << bytes_read); throw std::runtime_error("Aborting: chunk size exceeds buffer size"); } if (chunk_size > CHUNK_SIZE_WARNING_THRESHOLD) { std::cout << refresh_string; MDEBUG("NOTE: chunk_size " << chunk_size << " > " << CHUNK_SIZE_WARNING_THRESHOLD << " << height: " << h-1 << ", offset " << bytes_read); } else if (chunk_size <= 0) { std::cout << refresh_string; MDEBUG("ERROR: chunk_size " << chunk_size << " <= 0" << " height: " << h-1 << ", offset " << bytes_read); throw std::runtime_error("Aborting"); } // skip to next expected block size value import_file.seekg(chunk_size, std::ios_base::cur); if (! import_file) { std::cout << refresh_string; MFATAL("ERROR: unexpected end of file: bytes read before error: " << import_file.gcount() << " of chunk_size " << chunk_size); throw std::runtime_error("Aborting"); } bytes_read += chunk_size; h += NUM_BLOCKS_PER_CHUNK; if (h >= blocks) break; } return bytes_read; } uint64_t BootstrapFile::count_blocks(const std::string& import_file_path) { std::streampos dummy_pos; uint64_t dummy_height = 0; return count_blocks(import_file_path, dummy_pos, dummy_height, dummy_height); } // If seek_height is non-zero on entry, return a stream position <= this height when finished. // And return the actual height corresponding to this position. Allows the caller to locate its // starting position without having to reread the entire file again. uint64_t BootstrapFile::count_blocks(const std::string& import_file_path, std::streampos &start_pos, uint64_t& seek_height, uint64_t &block_first) { boost::filesystem::path raw_file_path(import_file_path); boost::system::error_code ec; if (!boost::filesystem::exists(raw_file_path, ec)) { MFATAL("bootstrap file not found: " << raw_file_path); throw std::runtime_error("Aborting"); } std::ifstream import_file; import_file.open(import_file_path, std::ios_base::binary | std::ifstream::in); uint64_t start_height = seek_height; uint64_t h = 0; if (import_file.fail()) { MFATAL("import_file.open() fail"); throw std::runtime_error("Aborting"); } uint64_t full_header_size; // 4 byte magic + length of header structures uint8_t major_version, minor_version; uint64_t block_last; full_header_size = seek_to_first_chunk(import_file, major_version, minor_version, block_first, block_last); MINFO("Scanning blockchain from bootstrap file..."); bool quit = false; uint64_t bytes_read = 0, blocks; int progress_interval = 10; while (! quit) { if (start_height && h + block_first + progress_interval >= start_height - 1) { start_height = 0; start_pos = import_file.tellg(); seek_height = h + block_first; } bytes_read += count_bytes(import_file, progress_interval, blocks, quit); h += blocks; std::cout << "\r" << "block height: " << h-1 << " \r" << std::flush; // std::cout << refresh_string; MDEBUG("Number bytes scanned: " << bytes_read); } import_file.close(); std::cout << ENDL; std::cout << "Done scanning bootstrap file" << ENDL; std::cout << "Full header length: " << full_header_size << " bytes" << ENDL; std::cout << "Scanned for blocks: " << bytes_read << " bytes" << ENDL; std::cout << "Total: " << full_header_size + bytes_read << " bytes" << ENDL; std::cout << "Number of blocks: " << h << ENDL; std::cout << ENDL; // NOTE: h is the number of blocks. // Note that a block's stored height is zero-based, but parts of the code use // one-based height. return h; }