text: // Copyright (c) 2014-2022, 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_file.h"
  #include "blocksdat_file.h"
  #include "common/command_line.h"
  #include "cryptonote_core/tx_pool.h"
  #include "cryptonote_core/cryptonote_core.h"
  #include "blockchain_db/blockchain_db.h"
  #include "version.h"
  
  #undef MONERO_DEFAULT_LOG_CATEGORY
  #define MONERO_DEFAULT_LOG_CATEGORY "bcutil"
  
  namespace po = boost::program_options;
  using namespace epee;
  
  int main(int argc, char* argv[])
  {
    TRY_ENTRY();
  
    epee::string_tools::set_module_name_and_folder(argv[0]);
  
    uint32_t log_level = 0;
    uint64_t block_start = 0;
    uint64_t block_stop = 0;
    bool blocks_dat = false;
  
    tools::on_startup();
  
    boost::filesystem::path output_file_path;
  
    po::options_description desc_cmd_only("Command line options");
    po::options_description desc_cmd_sett("Command line options and settings options");
    const command_line::arg_descriptor<std::string> arg_output_file = {"output-file", "Specify output file", "", true};
    const command_line::arg_descriptor<std::string> arg_log_level  = {"log-level",  "0-4 or categories", ""};
    const command_line::arg_descriptor<uint64_t> arg_block_start = {"block-start", "Start at block number", block_start};
    const command_line::arg_descriptor<uint64_t> arg_block_stop = {"block-stop", "Stop at block number", block_stop};
    const command_line::arg_descriptor<bool> arg_blocks_dat = {"blocksdat", "Output in blocks.dat format", blocks_dat};
  
  
    command_line::add_arg(desc_cmd_sett, cryptonote::arg_data_dir);
    command_line::add_arg(desc_cmd_sett, arg_output_file);
    command_line::add_arg(desc_cmd_sett, cryptonote::arg_testnet_on);
    command_line::add_arg(desc_cmd_sett, cryptonote::arg_stagenet_on);
    command_line::add_arg(desc_cmd_sett, arg_log_level);
    command_line::add_arg(desc_cmd_sett, arg_block_start);
    command_line::add_arg(desc_cmd_sett, arg_block_stop);
    command_line::add_arg(desc_cmd_sett, arg_blocks_dat);
  
    command_line::add_arg(desc_cmd_only, command_line::arg_help);
  
    po::options_description desc_options("Allowed options");
    desc_options.add(desc_cmd_only).add(desc_cmd_sett);
  
    po::variables_map vm;
    bool r = command_line::handle_error_helper(desc_options, [&]()
    {
      po::store(po::parse_command_line(argc, argv, desc_options), vm);
      po::notify(vm);
      return true;
    });
    if (! r)
      return 1;
  
    if (command_line::get_arg(vm, command_line::arg_help))
    {
      std::cout << "Monero '" << MONERO_RELEASE_NAME << "' (v" << MONERO_VERSION_FULL << ")" << ENDL << ENDL;
      std::cout << desc_options << std::endl;
      return 1;
    }
  
    mlog_configure(mlog_get_default_log_path("monero-blockchain-export.log"), true);
    if (!command_line::is_arg_defaulted(vm, arg_log_level))
      mlog_set_log(command_line::get_arg(vm, arg_log_level).c_str());
    else
      mlog_set_log(std::string(std::to_string(log_level) + ",bcutil:INFO").c_str());
    block_start = command_line::get_arg(vm, arg_block_start);
    block_stop = command_line::get_arg(vm, arg_block_stop);
  
    LOG_PRINT_L0("Starting...");
  
    bool opt_testnet = command_line::get_arg(vm, cryptonote::arg_testnet_on);
    bool opt_stagenet = command_line::get_arg(vm, cryptonote::arg_stagenet_on);
    if (opt_testnet && opt_stagenet)
    {
      std::cerr << "Can't specify more than one of --testnet and --stagenet" << std::endl;
      return 1;
    }
    bool opt_blocks_dat = command_line::get_arg(vm, arg_blocks_dat);
  
    std::string m_config_folder;
  
    m_config_folder = command_line::get_arg(vm, cryptonote::arg_data_dir);
  
    if (command_line::has_arg(vm, arg_output_file))
      output_file_path = boost::filesystem::path(command_line::get_arg(vm, arg_output_file));
    else
      output_file_path = boost::filesystem::path(m_config_folder) / "export" / BLOCKCHAIN_RAW;
    LOG_PRINT_L0("Export output file: " << output_file_path.string());
  
    // If we wanted to use the memory pool, we would set up a fake_core.
  
    // Use Blockchain instead of lower-level BlockchainDB for two reasons:
    // 1. Blockchain has the init() method for easy setup
    // 2. exporter needs to use get_current_blockchain_height(), get_block_id_by_height(), get_block_by_hash()
    //
    // cannot match blockchain_storage setup above with just one line,
    // e.g.
    //   Blockchain* core_storage = new Blockchain(NULL);
    // because unlike blockchain_storage constructor, which takes a pointer to
    // tx_memory_pool, Blockchain's constructor takes tx_memory_pool object.
    LOG_PRINT_L0("Initializing source blockchain (BlockchainDB)");
    Blockchain* core_storage = NULL;
    tx_memory_pool m_mempool(*core_storage);
    core_storage = new Blockchain(m_mempool);
  
    BlockchainDB* db = new_db();
    if (db == NULL)
    {
      LOG_ERROR("Failed to initialize a database");
      throw std::runtime_error("Failed to initialize a database");
    }
    LOG_PRINT_L0("database: LMDB");
  
    boost::filesystem::path folder(m_config_folder);
    folder /= db->get_db_name();
    const std::string filename = folder.string();
  
    LOG_PRINT_L0("Loading blockchain from folder " << filename << " ...");
    try
    {
      db->open(filename, DBF_RDONLY);
    }
    catch (const std::exception& e)
    {
      LOG_PRINT_L0("Error opening database: " << e.what());
      return 1;
    }
    r = core_storage->init(db, opt_testnet ? cryptonote::TESTNET : opt_stagenet ? cryptonote::STAGENET : cryptonote::MAINNET);
  
    if (core_storage->get_blockchain_pruning_seed() && !opt_blocks_dat)
    {
      LOG_PRINT_L0("Blockchain is pruned, cannot export");
      return 1;
    }
  
    CHECK_AND_ASSERT_MES(r, 1, "Failed to initialize source blockchain storage");
    LOG_PRINT_L0("Source blockchain storage initialized OK");
    LOG_PRINT_L0("Exporting blockchain raw data...");
  
    if (opt_blocks_dat)
    {
      BlocksdatFile blocksdat;
      r = blocksdat.store_blockchain_raw(core_storage, NULL, output_file_path, block_stop);
    }
    else
    {
      BootstrapFile bootstrap;
      r = bootstrap.store_blockchain_raw(core_storage, NULL, output_file_path, block_start, block_stop);
    }
    CHECK_AND_ASSERT_MES(r, 1, "Failed to export blockchain raw data");
    LOG_PRINT_L0("Blockchain raw data exported OK");
    return 0;
  
    CATCH_ENTRY("Export error", 1);
  }
  