text: // Copyright (c) 2014-2017, The Silicon 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.
  //
  // Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
  
  #pragma once
  
  #include <ctime>
  
  #include <boost/program_options/options_description.hpp>
  #include <boost/program_options/variables_map.hpp>
  #include <boost/interprocess/sync/file_lock.hpp>
  
  #include "cryptonote_protocol/cryptonote_protocol_handler_common.h"
  #include "storages/portable_storage_template_helper.h"
  #include "common/download.h"
  #include "common/threadpool.h"
  #include "common/command_line.h"
  #include "tx_pool.h"
  #include "blockchain.h"
  #include "cryptonote_basic/miner.h"
  #include "cryptonote_basic/connection_context.h"
  #include "cryptonote_basic/cryptonote_stat_info.h"
  #include "warnings.h"
  #include "crypto/hash.h"
  
  PUSH_WARNINGS
  DISABLE_VS_WARNINGS(4355)
  
  namespace cryptonote
  {
     struct test_options {
       const std::pair<uint8_t, uint64_t> *hard_forks;
     };
  
    extern const command_line::arg_descriptor<std::string> arg_data_dir;
    extern const command_line::arg_descriptor<std::string> arg_testnet_data_dir;
    extern const command_line::arg_descriptor<bool, false> arg_testnet_on;
    extern const command_line::arg_descriptor<bool> arg_offline;
  
    /************************************************************************/
    /*                                                                      */
    /************************************************************************/
  
     /**
      * @brief handles core cryptonote functionality
      *
      * This class coordinates cryptonote functionality including, but not
      * limited to, communication among the Blockchain, the transaction pool,
      * any miners, and the network.
      */
     class core: public i_miner_handler
     {
     public:
  
        /**
         * @brief constructor
         *
         * sets member variables into a usable state
         *
         * @param pprotocol pre-constructed protocol object to store and use
         */
       core(i_cryptonote_protocol* pprotocol);
  
      /**
       * @copydoc Blockchain::handle_get_objects
       *
       * @note see Blockchain::handle_get_objects()
       * @param context connection context associated with the request
       */
       bool handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NOTIFY_RESPONSE_GET_OBJECTS::request& rsp, cryptonote_connection_context& context);
  
       /**
        * @brief calls various idle routines
        *
        * @note see miner::on_idle and tx_memory_pool::on_idle
        *
        * @return true
        */
       bool on_idle();
  
       /**
        * @brief handles an incoming transaction
        *
        * Parses an incoming transaction and, if nothing is obviously wrong,
        * passes it along to the transaction pool
        *
        * @param tx_blob the tx to handle
        * @param tvc metadata about the transaction's validity
        * @param keeped_by_block if the transaction has been in a block
        * @param relayed whether or not the transaction was relayed to us
        * @param do_not_relay whether to prevent the transaction from being relayed
        *
        * @return true if the transaction made it to the transaction pool, otherwise false
        */
       bool handle_incoming_tx(const blobdata& tx_blob, tx_verification_context& tvc, bool keeped_by_block, bool relayed, bool do_not_relay);
  
       /**
        * @brief handles a list of incoming transactions
        *
        * Parses incoming transactions and, if nothing is obviously wrong,
        * passes them along to the transaction pool
        *
        * @param tx_blobs the txs to handle
        * @param tvc metadata about the transactions' validity
        * @param keeped_by_block if the transactions have been in a block
        * @param relayed whether or not the transactions were relayed to us
        * @param do_not_relay whether to prevent the transactions from being relayed
        *
        * @return true if the transactions made it to the transaction pool, otherwise false
        */
       bool handle_incoming_txs(const std::list<blobdata>& tx_blobs, std::vector<tx_verification_context>& tvc, bool keeped_by_block, bool relayed, bool do_not_relay);
  
       /**
        * @brief handles an incoming block
        *
        * periodic update to checkpoints is triggered here
        * Attempts to add the block to the Blockchain and, on success,
        * optionally updates the miner's block template.
        *
        * @param block_blob the block to be added
        * @param bvc return-by-reference metadata context about the block's validity
        * @param update_miner_blocktemplate whether or not to update the miner's block template
        *
        * @return false if loading new checkpoints fails, or the block is not
        * added, otherwise true
        */
       bool handle_incoming_block(const blobdata& block_blob, block_verification_context& bvc, bool update_miner_blocktemplate = true);
  
       /**
        * @copydoc Blockchain::prepare_handle_incoming_blocks
        *
        * @note see Blockchain::prepare_handle_incoming_blocks
        */
       bool prepare_handle_incoming_blocks(const std::list<block_complete_entry>  &blocks);
  
       /**
        * @copydoc Blockchain::cleanup_handle_incoming_blocks
        *
        * @note see Blockchain::cleanup_handle_incoming_blocks
        */
       bool cleanup_handle_incoming_blocks(bool force_sync = false);
       	     	
       /**
        * @brief check the size of a block against the current maximum
        *
        * @param block_blob the block to check
        *
        * @return whether or not the block is too big
        */
       bool check_incoming_block_size(const blobdata& block_blob) const;
  
       /**
        * @brief get the cryptonote protocol instance
        *
        * @return the instance
        */
       i_cryptonote_protocol* get_protocol(){return m_pprotocol;}
  
       //-------------------- i_miner_handler -----------------------
  
       /**
        * @brief stores and relays a block found by a miner
        *
        * Updates the miner's target block, attempts to store the found
        * block in Blockchain, and -- on success -- relays that block to
        * the network.
        *
        * @param b the block found
        *
        * @return true if the block was added to the main chain, otherwise false
        */
       virtual bool handle_block_found( block& b);
  
       /**
        * @copydoc Blockchain::create_block_template
        *
        * @note see Blockchain::create_block_template
        */
       virtual bool get_block_template(block& b, const account_public_address& adr, difficulty_type& diffic, uint64_t& height, uint64_t& expected_reward, const blobdata& ex_nonce);
  
       /**
        * @brief called when a transaction is relayed
        */
       virtual void on_transaction_relayed(const cryptonote::blobdata& tx);
  
  
       /**
        * @brief gets the miner instance
        *
        * @return a reference to the miner instance
        */
       miner& get_miner(){return m_miner;}
  
       /**
        * @brief gets the miner instance (const)
        *
        * @return a const reference to the miner instance
        */
       const miner& get_miner()const{return m_miner;}
  
       /**
        * @brief adds command line options to the given options set
        *
        * As of now, there are no command line options specific to core,
        * so this function simply returns.
        *
        * @param desc return-by-reference the command line options set to add to
        */
       static void init_options(boost::program_options::options_description& desc);
  
       /**
        * @brief initializes the core as needed
        *
        * This function initializes the transaction pool, the Blockchain, and
        * a miner instance with parameters given on the command line (or defaults)
        *
        * @param vm command line parameters
        * @param config_subdir subdirectory for config storage
        * @param test_options configuration options for testing
        *
        * @return false if one of the init steps fails, otherwise true
        */
       bool init(const boost::program_options::variables_map& vm, const char *config_subdir = NULL, const test_options *test_options = NULL);
  
       /**
        * @copydoc Blockchain::reset_and_set_genesis_block
        *
        * @note see Blockchain::reset_and_set_genesis_block
        */
       bool set_genesis_block(const block& b);
  
       /**
        * @brief performs safe shutdown steps for core and core components
        *
        * Uninitializes the miner instance, transaction pool, and Blockchain
        *
        * @return true
        */
       bool deinit();
  
       /**
        * @brief sets to drop blocks downloaded (for testing)
        */
       void test_drop_download();
  
       /**
        * @brief sets to drop blocks downloaded below a certain height
        *
        * @param height height below which to drop blocks
        */
       void test_drop_download_height(uint64_t height);
  
       /**
        * @brief gets whether or not to drop blocks (for testing)
        *
        * @return whether or not to drop blocks
        */
       bool get_test_drop_download() const;
  
       /**
        * @brief gets whether or not to drop blocks
        *
        * If the current blockchain height <= our block drop threshold
        * and test drop blocks is set, return true
        *
        * @return see above
        */
       bool get_test_drop_download_height() const;
  
       /**
        * @copydoc Blockchain::get_current_blockchain_height
        *
        * @note see Blockchain::get_current_blockchain_height()
        */
       uint64_t get_current_blockchain_height() const;
  
       /**
        * @brief get the hash and height of the most recent block
        *
        * @param height return-by-reference height of the block
        * @param top_id return-by-reference hash of the block
        */
       void get_blockchain_top(uint64_t& height, crypto::hash& top_id) const;
  
       /**
        * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&, std::list<transaction>&) const
        *
        * @note see Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&, std::list<transaction>&) const
        */
       bool get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks, std::list<cryptonote::blobdata>& txs) const;
  
       /**
        * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
        *
        * @note see Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
        */
       bool get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks) const;
  
       /**
        * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
        *
        * @note see Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
        */
       bool get_blocks(uint64_t start_offset, size_t count, std::list<block>& blocks) const;
  
       /**
        * @copydoc Blockchain::get_blocks(const t_ids_container&, t_blocks_container&, t_missed_container&) const
        *
        * @note see Blockchain::get_blocks(const t_ids_container&, t_blocks_container&, t_missed_container&) const
        */
       template<class t_ids_container, class t_blocks_container, class t_missed_container>
       bool get_blocks(const t_ids_container& block_ids, t_blocks_container& blocks, t_missed_container& missed_bs) const
       {
         return m_blockchain_storage.get_blocks(block_ids, blocks, missed_bs);
       }
  
       /**
        * @copydoc Blockchain::get_block_id_by_height
        *
        * @note see Blockchain::get_block_id_by_height
        */
       crypto::hash get_block_id_by_height(uint64_t height) const;
  
       /**
        * @copydoc Blockchain::get_transactions
        *
        * @note see Blockchain::get_transactions
        */
       bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<cryptonote::blobdata>& txs, std::list<crypto::hash>& missed_txs) const;
  
       /**
        * @copydoc Blockchain::get_transactions
        *
        * @note see Blockchain::get_transactions
        */
       bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<transaction>& txs, std::list<crypto::hash>& missed_txs) const;
  
       /**
        * @copydoc Blockchain::get_block_by_hash
        *
        * @note see Blockchain::get_block_by_hash
        */
       bool get_block_by_hash(const crypto::hash &h, block &blk, bool *orphan = NULL) const;
  
       /**
        * @copydoc Blockchain::get_alternative_blocks
        *
        * @note see Blockchain::get_alternative_blocks(std::list<block>&) const
        */
       bool get_alternative_blocks(std::list<block>& blocks) const;
  
       /**
        * @copydoc Blockchain::get_alternative_blocks_count
        *
        * @note see Blockchain::get_alternative_blocks_count() const
        */
       size_t get_alternative_blocks_count() const;
  
       /**
        * @brief set the pointer to the cryptonote protocol object to use
        *
        * @param pprotocol the pointer to set ours as
        */
       void set_cryptonote_protocol(i_cryptonote_protocol* pprotocol);
  
       /**
        * @copydoc Blockchain::set_checkpoints
        *
        * @note see Blockchain::set_checkpoints()
        */
       void set_checkpoints(checkpoints&& chk_pts);
  
       /**
        * @brief set the file path to read from when loading checkpoints
        *
        * @param path the path to set ours as
        */
       void set_checkpoints_file_path(const std::string& path);
  
       /**
        * @brief set whether or not we enforce DNS checkpoints
        *
        * @param enforce_dns enforce DNS checkpoints or not
        */
       void set_enforce_dns_checkpoints(bool enforce_dns);
  
       /**
        * @brief set whether or not to enable or disable DNS checkpoints
        *
        * @param disble whether to disable DNS checkpoints
        */
       void disable_dns_checkpoints(bool disable = true) { m_disable_dns_checkpoints = disable; }
  
       /**
        * @copydoc tx_memory_pool::have_tx
        *
        * @note see tx_memory_pool::have_tx
        */
       bool pool_has_tx(const crypto::hash &txid) const;
  
       /**
        * @copydoc tx_memory_pool::get_transactions
        * @param include_unrelayed_txes include unrelayed txes in result
        *
        * @note see tx_memory_pool::get_transactions
        */
       bool get_pool_transactions(std::list<transaction>& txs, bool include_unrelayed_txes = true) const;
  
       /**
        * @copydoc tx_memory_pool::get_txpool_backlog
        *
        * @note see tx_memory_pool::get_txpool_backlog
        */
       bool get_txpool_backlog(std::vector<tx_backlog_entry>& backlog) const;
       
       /**
        * @copydoc tx_memory_pool::get_transactions
        * @param include_unrelayed_txes include unrelayed txes in result
        *
        * @note see tx_memory_pool::get_transactions
        */
       bool get_pool_transaction_hashes(std::vector<crypto::hash>& txs, bool include_unrelayed_txes = true) const;
  
       /**
        * @copydoc tx_memory_pool::get_transactions
        * @param include_unrelayed_txes include unrelayed txes in result
        *
        * @note see tx_memory_pool::get_transactions
        */
       bool get_pool_transaction_stats(struct txpool_stats& stats, bool include_unrelayed_txes = true) const;
  
       /**
        * @copydoc tx_memory_pool::get_transaction
        *
        * @note see tx_memory_pool::get_transaction
        */
       bool get_pool_transaction(const crypto::hash& id, cryptonote::blobdata& tx) const;
  
       /**
        * @copydoc tx_memory_pool::get_pool_transactions_and_spent_keys_info
        * @param include_unrelayed_txes include unrelayed txes in result
        *
        * @note see tx_memory_pool::get_pool_transactions_and_spent_keys_info
        */
       bool get_pool_transactions_and_spent_keys_info(std::vector<tx_info>& tx_infos, std::vector<spent_key_image_info>& key_image_infos, bool include_unrelayed_txes = true) const;
  
       /**
        * @copydoc tx_memory_pool::get_pool_for_rpc
        *
        * @note see tx_memory_pool::get_pool_for_rpc
        */
       bool get_pool_for_rpc(std::vector<cryptonote::rpc::tx_in_pool>& tx_infos, cryptonote::rpc::key_images_with_tx_hashes& key_image_infos) const;
  
       /**
        * @copydoc tx_memory_pool::get_transactions_count
        *
        * @note see tx_memory_pool::get_transactions_count
        */
       size_t get_pool_transactions_count() const;
  
       /**
        * @copydoc Blockchain::get_total_transactions
        *
        * @note see Blockchain::get_total_transactions
        */
       size_t get_blockchain_total_transactions() const;
  
       /**
        * @copydoc Blockchain::have_block
        *
        * @note see Blockchain::have_block
        */
       bool have_block(const crypto::hash& id) const;
  
       /**
        * @copydoc Blockchain::get_short_chain_history
        *
        * @note see Blockchain::get_short_chain_history
        */
       bool get_short_chain_history(std::list<crypto::hash>& ids) const;
  
       /**
        * @copydoc Blockchain::find_blockchain_supplement(const std::list<crypto::hash>&, NOTIFY_RESPONSE_CHAIN_ENTRY::request&) const
        *
        * @note see Blockchain::find_blockchain_supplement(const std::list<crypto::hash>&, NOTIFY_RESPONSE_CHAIN_ENTRY::request&) const
        */
       bool find_blockchain_supplement(const std::list<crypto::hash>& qblock_ids, NOTIFY_RESPONSE_CHAIN_ENTRY::request& resp) const;
  
       /**
        * @copydoc Blockchain::find_blockchain_supplement(const uint64_t, const std::list<crypto::hash>&, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >&, uint64_t&, uint64_t&, size_t) const
        *
        * @note see Blockchain::find_blockchain_supplement(const uint64_t, const std::list<crypto::hash>&, std::list<std::pair<cryptonote::blobdata, std::list<transaction> > >&, uint64_t&, uint64_t&, size_t) const
        */
       bool find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >& blocks, uint64_t& total_height, uint64_t& start_height, size_t max_count) const;
  
       /**
        * @brief gets some stats about the daemon
        *
        * @param st_inf return-by-reference container for the stats requested
        *
        * @return true
        */
       bool get_stat_info(core_stat_info& st_inf) const;
  
       /**
        * @copydoc Blockchain::get_tx_outputs_gindexs
        *
        * @note see Blockchain::get_tx_outputs_gindexs
        */
       bool get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<uint64_t>& indexs) const;
  
       /**
        * @copydoc Blockchain::get_tail_id
        *
        * @note see Blockchain::get_tail_id
        */
       crypto::hash get_tail_id() const;
  
       /**
        * @copydoc Blockchain::get_block_cumulative_difficulty
        *
        * @note see Blockchain::get_block_cumulative_difficulty
        */
       difficulty_type get_block_cumulative_difficulty(uint64_t height) const;
  
       /**
        * @copydoc Blockchain::get_random_outs_for_amounts
        *
        * @note see Blockchain::get_random_outs_for_amounts
        */
       bool get_random_outs_for_amounts(const COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS::request& req, COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS::response& res) const;
  
       /**
        * @copydoc Blockchain::get_outs
        *
        * @note see Blockchain::get_outs
        */
       bool get_outs(const COMMAND_RPC_GET_OUTPUTS_BIN::request& req, COMMAND_RPC_GET_OUTPUTS_BIN::response& res) const;
  
       /**
        *
        * @copydoc Blockchain::get_random_rct_outs
        *
        * @note see Blockchain::get_random_rct_outs
        */
       bool get_random_rct_outs(const COMMAND_RPC_GET_RANDOM_RCT_OUTPUTS::request& req, COMMAND_RPC_GET_RANDOM_RCT_OUTPUTS::response& res) const;
  
  
       /**
        * @copydoc miner::pause
        *
        * @note see miner::pause
        */
       void pause_mine();
  
       /**
        * @copydoc miner::resume
        *
        * @note see miner::resume
        */
       void resume_mine();
  
       /**
        * @brief gets the Blockchain instance
        *
        * @return a reference to the Blockchain instance
        */
       Blockchain& get_blockchain_storage(){return m_blockchain_storage;}
  
       /**
        * @brief gets the Blockchain instance (const)
        *
        * @return a const reference to the Blockchain instance
        */
       const Blockchain& get_blockchain_storage()const{return m_blockchain_storage;}
  
       /**
        * @copydoc tx_memory_pool::print_pool
        *
        * @note see tx_memory_pool::print_pool
        */
       std::string print_pool(bool short_format) const;
  
       /**
        * @copydoc miner::on_synchronized
        *
        * @note see miner::on_synchronized
        */
       void on_synchronized();
  
       /**
        * @copydoc Blockchain::safesyncmode
        *
        * 2note see Blockchain::safesyncmode
        */
       void safesyncmode(const bool onoff);
  
       /**
        * @brief sets the target blockchain height
        *
        * @param target_blockchain_height the height to set
        */
       void set_target_blockchain_height(uint64_t target_blockchain_height);
  
       /**
        * @brief gets the target blockchain height
        *
        * @param target_blockchain_height the target height
        */
       uint64_t get_target_blockchain_height() const;
  
       /**
        * @brief return the ideal hard fork version for a given block height
        *
        * @return what it says above
        */
       uint8_t get_ideal_hard_fork_version(uint64_t height) const;
  
       /**
        * @brief return the hard fork version for a given block height
        *
        * @return what it says above
        */
       uint8_t get_hard_fork_version(uint64_t height) const;
  
       /**
        * @brief gets start_time
        *
        */
       std::time_t get_start_time() const;
  
       /**
        * @brief tells the Blockchain to update its checkpoints
        *
        * This function will check if enough time has passed since the last
        * time checkpoints were updated and tell the Blockchain to update
        * its checkpoints if it is time.  If updating checkpoints fails,
        * the daemon is told to shut down.
        *
        * @note see Blockchain::update_checkpoints()
        */
       bool update_checkpoints();
  
       /**
        * @brief tells the daemon to wind down operations and stop running
        *
        * Currently this function raises SIGTERM, allowing the installed signal
        * handlers to do the actual stopping.
        */
       void graceful_exit();
  
       /**
        * @brief stops the daemon running
        *
        * @note see graceful_exit()
        */
       void stop();
  
       /**
        * @copydoc Blockchain::have_tx_keyimg_as_spent
        *
        * @note see Blockchain::have_tx_keyimg_as_spent
        */
       bool is_key_image_spent(const crypto::key_image& key_im) const;
  
       /**
        * @brief check if multiple key images are spent
        *
        * plural version of is_key_image_spent()
        *
        * @param key_im list of key images to check
        * @param spent return-by-reference result for each image checked
        *
        * @return true
        */
       bool are_key_images_spent(const std::vector<crypto::key_image>& key_im, std::vector<bool> &spent) const;
  
       /**
        * @brief check if multiple key images are spent in the transaction pool
        *
        * @param key_im list of key images to check
        * @param spent return-by-reference result for each image checked
        *
        * @return true
        */
       bool are_key_images_spent_in_pool(const std::vector<crypto::key_image>& key_im, std::vector<bool> &spent) const;
  
       /**
        * @brief get the number of blocks to sync in one go
        *
        * @return the number of blocks to sync in one go
        */
       size_t get_block_sync_size(uint64_t height) const;
  
       /**
        * @brief get the sum of coinbase tx amounts between blocks
        *
        * @return the number of blocks to sync in one go
        */
       std::pair<uint64_t, uint64_t> get_coinbase_tx_sum(const uint64_t start_offset, const size_t count);
       
       /**
        * @brief get whether we're on testnet or not
        *
        * @return are we on testnet?
        */     
       bool get_testnet() const { return m_testnet; };
  
       /**
        * @brief get whether fluffy blocks are enabled
        *
        * @return whether fluffy blocks are enabled
        */
       bool fluffy_blocks_enabled() const { return m_fluffy_blocks_enabled; }
  
       /**
        * @brief check a set of hashes against the precompiled hash set
        *
        * @return number of usable blocks
        */
       uint64_t prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes);
  
       /**
        * @brief get free disk space on the blockchain partition
        *
        * @return free space in bytes
        */
       uint64_t get_free_space() const;
  
       /**
        * @brief get whether the core is running offline
        *
        * @return whether the core is running offline
        */
       bool offline() const { return m_offline; }
  
     private:
  
       /**
        * @copydoc add_new_tx(transaction&, tx_verification_context&, bool)
        *
        * @param tx_hash the transaction's hash
        * @param tx_prefix_hash the transaction prefix' hash
        * @param blob_size the size of the transaction
        * @param relayed whether or not the transaction was relayed to us
        * @param do_not_relay whether to prevent the transaction from being relayed
        *
        */
       bool add_new_tx(transaction& tx, const crypto::hash& tx_hash, const crypto::hash& tx_prefix_hash, size_t blob_size, tx_verification_context& tvc, bool keeped_by_block, bool relayed, bool do_not_relay);
  
       /**
        * @brief add a new transaction to the transaction pool
        *
        * Adds a new transaction to the transaction pool.
        *
        * @param tx the transaction to add
        * @param tvc return-by-reference metadata about the transaction's verification process
        * @param keeped_by_block whether or not the transaction has been in a block
        * @param relayed whether or not the transaction was relayed to us
        * @param do_not_relay whether to prevent the transaction from being relayed
        *
        * @return true if the transaction is already in the transaction pool,
        * is already in a block on the Blockchain, or is successfully added
        * to the transaction pool
        */
       bool add_new_tx(transaction& tx, tx_verification_context& tvc, bool keeped_by_block, bool relayed, bool do_not_relay);
  
       /**
        * @copydoc Blockchain::add_new_block
        *
        * @note see Blockchain::add_new_block
        */
       bool add_new_block(const block& b, block_verification_context& bvc);
  
       /**
        * @brief load any core state stored on disk
        *
        * currently does nothing, but may have state to load in the future.
        *
        * @return true
        */
       bool load_state_data();
  
       /**
        * @copydoc parse_tx_from_blob(transaction&, crypto::hash&, crypto::hash&, const blobdata&) const
        *
        * @note see parse_tx_from_blob(transaction&, crypto::hash&, crypto::hash&, const blobdata&) const
        */
       bool parse_tx_from_blob(transaction& tx, crypto::hash& tx_hash, crypto::hash& tx_prefix_hash, const blobdata& blob) const;
  
       /**
        * @brief check a transaction's syntax
        *
        * For now this does nothing, but it may check something about the tx
        * in the future.
        *
        * @param tx the transaction to check
        *
        * @return true
        */
       bool check_tx_syntax(const transaction& tx) const;
  
       /**
        * @brief validates some simple properties of a transaction
        *
        * Currently checks: tx has inputs,
        *                   tx inputs all of supported type(s),
        *                   tx outputs valid (type, key, amount),
        *                   input and output total amounts don't overflow,
        *                   output amount <= input amount,
        *                   tx not too large,
        *                   each input has a different key image.
        *
        * @param tx the transaction to check
        * @param keeped_by_block if the transaction has been in a block
        *
        * @return true if all the checks pass, otherwise false
        */
       bool check_tx_semantic(const transaction& tx, bool keeped_by_block) const;
  
       bool handle_incoming_tx_pre(const blobdata& tx_blob, tx_verification_context& tvc, cryptonote::transaction &tx, crypto::hash &tx_hash, crypto::hash &tx_prefixt_hash, bool keeped_by_block, bool relayed, bool do_not_relay);
       bool handle_incoming_tx_post(const blobdata& tx_blob, tx_verification_context& tvc, cryptonote::transaction &tx, crypto::hash &tx_hash, crypto::hash &tx_prefixt_hash, bool keeped_by_block, bool relayed, bool do_not_relay);
  
       /**
        * @copydoc miner::on_block_chain_update
        *
        * @note see miner::on_block_chain_update
        *
        * @return true
        */
       bool update_miner_block_template();
  
       /**
        * @brief act on a set of command line options given
        *
        * @param vm the command line options
        *
        * @return true
        */
       bool handle_command_line(const boost::program_options::variables_map& vm);
  
       /**
        * @brief verify that each input key image in a transaction is unique
        *
        * @param tx the transaction to check
        *
        * @return false if any key image is repeated, otherwise true
        */
       bool check_tx_inputs_keyimages_diff(const transaction& tx) const;
  
       /**
        * @brief verify that each ring uses distinct members
        *
        * @param tx the transaction to check
        *
        * @return false if any ring uses duplicate members, true otherwise
        */
       bool check_tx_inputs_ring_members_diff(const transaction& tx) const;
  
       /**
        * @brief verify that each input key image in a transaction is in
        * the valid domain
        *
        * @param tx the transaction to check
        *
        * @return false if any key image is not in the valid domain, otherwise true
        */
       bool check_tx_inputs_keyimages_domain(const transaction& tx) const;
  
       /**
        * @brief checks HardFork status and prints messages about it
        *
        * Checks the status of HardFork and logs/prints if an update to
        * the daemon is necessary.
        *
        * @note see Blockchain::get_hard_fork_state and HardFork::State
        *
        * @return true
        */
       bool check_fork_time();
  
       /**
        * @brief attempts to relay any transactions in the mempool which need it
        *
        * @return true
        */
       bool relay_txpool_transactions();
  
       /**
        * @brief checks DNS versions
        *
        * @return true on success, false otherwise
        */
       bool check_updates();
  
       /**
        * @brief checks free disk space
        *
        * @return true on success, false otherwise
        */
       bool check_disk_space();
  
       bool m_test_drop_download = true; //!< whether or not to drop incoming blocks (for testing)
  
       uint64_t m_test_drop_download_height = 0; //!< height under which to drop incoming blocks, if doing so
  
       tx_memory_pool m_mempool; //!< transaction pool instance
       Blockchain m_blockchain_storage; //!< Blockchain instance
  
       i_cryptonote_protocol* m_pprotocol; //!< cryptonote protocol instance
  
       epee::critical_section m_incoming_tx_lock; //!< incoming transaction lock
  
       //m_miner and m_miner_addres are probably temporary here
       miner m_miner; //!< miner instance
       account_public_address m_miner_address; //!< address to mine to (for miner instance)
  
       std::string m_config_folder; //!< folder to look in for configs and other files
  
       cryptonote_protocol_stub m_protocol_stub; //!< cryptonote protocol stub instance
  
       epee::math_helper::once_a_time_seconds<60*60*12, false> m_store_blockchain_interval; //!< interval for manual storing of Blockchain, if enabled
       epee::math_helper::once_a_time_seconds<60*60*2, true> m_fork_moaner; //!< interval for checking HardFork status
       epee::math_helper::once_a_time_seconds<60*2, false> m_txpool_auto_relayer; //!< interval for checking re-relaying txpool transactions
       epee::math_helper::once_a_time_seconds<60*60*12, true> m_check_updates_interval; //!< interval for checking for new versions
       epee::math_helper::once_a_time_seconds<60*10, true> m_check_disk_space_interval; //!< interval for checking for disk space
  
       std::atomic<bool> m_starter_message_showed; //!< has the "daemon will sync now" message been shown?
  
       uint64_t m_target_blockchain_height; //!< blockchain height target
  
       bool m_testnet; //!< are we on testnet?
  
       bool m_fakechain; //!< are we using a fake chain (for testing purposes)?
  
       std::string m_checkpoints_path; //!< path to json checkpoints file
       time_t m_last_dns_checkpoints_update; //!< time when dns checkpoints were last updated
       time_t m_last_json_checkpoints_update; //!< time when json checkpoints were last updated
  
       std::atomic_flag m_checkpoints_updating; //!< set if checkpoints are currently updating to avoid multiple threads attempting to update at once
       bool m_disable_dns_checkpoints;
  
       size_t block_sync_size;
  
       time_t start_time;
  
       std::unordered_set<crypto::hash> bad_semantics_txes[2];
       boost::mutex bad_semantics_txes_lock;
  
       tools::threadpool& m_threadpool;
  
       enum {
         UPDATES_DISABLED,
         UPDATES_NOTIFY,
         UPDATES_DOWNLOAD,
         UPDATES_UPDATE,
       } check_updates_level;
  
       tools::download_async_handle m_update_download;
       size_t m_last_update_length;
       boost::mutex m_update_mutex;
  
       bool m_fluffy_blocks_enabled;
       bool m_offline;
     };
  }
  
  POP_WARNINGS
  