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danicoin/src/cryptonote_core/cryptonote_core.h
moneromooo-monero 11dc091464
Fake outs set is now decided by the wallet 
This plugs a privacy leak from the wallet to the daemon,
as the daemon could previously see what input is included
as a transaction input, which the daemon hadn't previously
supplied. Now, the wallet requests a particular set of
outputs, including the real one.

This can result in transactions that can't be accepted if
the wallet happens to select too many outputs with non standard
unlock times. The daemon could know this and select another
output, but the wallet is blind to it. It's currently very
unlikely since I don't think anything uses non default
unlock times. The wallet requests more outputs than necessary
so it can use spares if any of the returns outputs are still
locked. If there are not enough spares to reach the desired
mixin, the transaction will fail.
2016-08-11 14:35:27 +01:00

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// Copyright (c) 2014-2016, 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.
//
// 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 "p2p/net_node_common.h"
#include "cryptonote_protocol/cryptonote_protocol_handler_common.h"
#include "storages/portable_storage_template_helper.h"
#include "tx_pool.h"
#if BLOCKCHAIN_DB == DB_LMDB
#include "blockchain.h"
#else
#include "blockchain_storage.h"
#endif
#include "miner.h"
#include "connection_context.h"
#include "cryptonote_core/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;
};
/************************************************************************/
/* */
/************************************************************************/
/**
* @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
*
* @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);
/**
* @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, const blobdata& ex_nonce);
/**
* @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 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 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
*
* if m_fast_exit is set, the call to Blockchain::deinit() is not made.
*
* @return true
*/
bool deinit();
/**
* @brief sets fast exit flag
*
* @note see deinit()
*/
static void set_fast_exit();
/**
* @brief gets the current state of the fast exit flag
*
* @return the fast exit flag
*
* @note see deinit()
*/
static bool get_fast_exit();
/**
* @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
*
* @return true
*/
bool get_blockchain_top(uint64_t& height, crypto::hash& top_id) const;
/**
* @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<block>&, std::list<transaction>&) const
*
* @note see Blockchain::get_blocks(uint64_t, size_t, std::list<block>&, std::list<transaction>&) const
*/
bool get_blocks(uint64_t start_offset, size_t count, std::list<block>& blocks, std::list<transaction>& txs) const;
/**
* @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<block>&) const
*
* @note see Blockchain::get_blocks(uint64_t, size_t, std::list<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<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) 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);
/**
* @copydoc tx_memory_pool::get_transactions
*
* @note see tx_memory_pool::get_transactions
*/
bool get_pool_transactions(std::list<transaction>& txs) const;
/**
* @copydoc tx_memory_pool::get_pool_transactions_and_spent_keys_info
*
* @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) 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<block, std::list<transaction> > >&, 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<block, 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<block, std::list<transaction> > >& 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_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::request& req, COMMAND_RPC_GET_OUTPUTS::response& res) const;
/**
* @copydoc miner::pause
*
* @note see miner::pause
*/
void pause_mine();
/**
* @copydoc miner::resume
*
* @note see miner::resume
*/
void resume_mine();
#if BLOCKCHAIN_DB == DB_LMDB
/**
* @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;}
#else
blockchain_storage& get_blockchain_storage(){return m_blockchain_storage;}
const blockchain_storage& get_blockchain_storage()const{return m_blockchain_storage;}
#endif
/**
* @copydoc Blockchain::print_blockchain
*
* @note see Blockchain::print_blockchain
*/
void print_blockchain(uint64_t start_index, uint64_t end_index) const;
/**
* @copydoc Blockchain::print_blockchain_index
*
* @note see Blockchain::print_blockchain_index
*/
void print_blockchain_index() const;
/**
* @copydoc tx_memory_pool::print_pool
*
* @note see tx_memory_pool::print_pool
*/
std::string print_pool(bool short_format) const;
/**
* @copydoc Blockchain::print_blockchain_outs
*
* @note see Blockchain::print_blockchain_outs
*/
void print_blockchain_outs(const std::string& file);
/**
* @copydoc miner::on_synchronized
*
* @note see miner::on_synchronized
*/
void on_synchronized();
/**
* @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 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;
private:
/**
* @copydoc add_new_tx(const 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
*
*/
bool add_new_tx(const 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);
/**
* @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
*
* @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(const transaction& tx, tx_verification_context& tvc, bool keeped_by_block, bool relayed);
/**
* @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;
/**
* @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 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 locks a file in the BlockchainDB directory
*
* @param path the directory in which to place the file
*
* @return true if lock acquired successfully, otherwise false
*/
bool lock_db_directory(const boost::filesystem::path &path);
/**
* @brief unlocks the db directory
*
* @note see lock_db_directory()
*
* @return true
*/
bool unlock_db_directory();
static std::atomic<bool> m_fast_exit; //!< whether or not to deinit Blockchain on exit
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
#if BLOCKCHAIN_DB == DB_LMDB
Blockchain m_blockchain_storage; //!< Blockchain instance
#else
blockchain_storage m_blockchain_storage;
#endif
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, false> 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
friend class tx_validate_inputs;
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
boost::interprocess::file_lock db_lock; //!< a lock object for a file lock in the db directory
};
}
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