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Merge pull request #749

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bfd4a28 Update BlockchainDB documentation (Thomas Winget)
797357e Change Doxyfile, Blockchain not blockchain_storage (Thomas Winget)
c835215 remove defunct code from cryptonote::core (Thomas Winget)
50dba6d cryptonote::core doxygen documentation (Thomas Winget)
8ac329d doxygen documentation for difficulty functions (Thomas Winget)
540a76c Move checkpoint functions into checkpoints class (Thomas Winget)
1b0c98e doxygen documentation for checkpoints.{h,cpp} (Thomas Winget)
89c24ac Remove unnecessary or defunct code (Thomas Winget)
ab0ed14 doxygen include private and static members (Thomas Winget)
3a48449 Updated documentation for blockchain.* (Thomas Winget)
This commit is contained in:
Riccardo Spagni 2016-03-25 08:22:06 +02:00
parent cb6be986c3 bfd4a28c41
commit 7fa63a82a1
No known key found for this signature in database
GPG key ID: 55432DF31CCD4FCD
15 changed files with 2920 additions and 605 deletions
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14
Doxyfile
View file

@ -409,13 +409,13 @@ LOOKUP_CACHE_SIZE = 0
# normally produced when WARNINGS is set to YES.
# The default value is: NO.
EXTRACT_ALL = NO
EXTRACT_ALL = YES
# If the EXTRACT_PRIVATE tag is set to YES all private members of a class will
# be included in the documentation.
# The default value is: NO.
EXTRACT_PRIVATE = NO
EXTRACT_PRIVATE = YES
# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal
# scope will be included in the documentation.
@ -427,7 +427,7 @@ EXTRACT_PACKAGE = NO
# included in the documentation.
# The default value is: NO.
EXTRACT_STATIC = NO
EXTRACT_STATIC = YES
# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) defined
# locally in source files will be included in the documentation. If set to NO
@ -452,7 +452,7 @@ EXTRACT_LOCAL_METHODS = NO
# are hidden.
# The default value is: NO.
EXTRACT_ANON_NSPACES = NO
EXTRACT_ANON_NSPACES = YES
# If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all
# undocumented members inside documented classes or files. If set to NO these
@ -1902,7 +1902,7 @@ ENABLE_PREPROCESSING = YES
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
MACRO_EXPANSION = NO
MACRO_EXPANSION = YES
# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
# the macro expansion is limited to the macros specified with the PREDEFINED and
@ -1910,7 +1910,7 @@ MACRO_EXPANSION = NO
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
EXPAND_ONLY_PREDEF = NO
EXPAND_ONLY_PREDEF = YES
# If the SEARCH_INCLUDES tag is set to YES the includes files in the
# INCLUDE_PATH will be searched if a #include is found.
@ -1942,7 +1942,7 @@ INCLUDE_FILE_PATTERNS =
# recursively expanded use the := operator instead of the = operator.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
PREDEFINED =
PREDEFINED = "BLOCKCHAIN_DB=2" \ # DB_LMDB
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The

1094
src/blockchain_db/blockchain_db.h
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File diff suppressed because it is too large Load diff

2
src/cryptonote_core/CMakeLists.txt
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@ -31,7 +31,6 @@ set(cryptonote_core_sources
blockchain_storage.cpp
blockchain.cpp
checkpoints.cpp
checkpoints_create.cpp
cryptonote_basic_impl.cpp
cryptonote_core.cpp
cryptonote_format_utils.cpp
@ -49,7 +48,6 @@ set(cryptonote_core_private_headers
blockchain_storage_boost_serialization.h
blockchain.h
checkpoints.h
checkpoints_create.h
connection_context.h
cryptonote_basic.h
cryptonote_basic_impl.h

49
src/cryptonote_core/blockchain.cpp
View file

@ -49,7 +49,7 @@
#include "common/boost_serialization_helper.h"
#include "warnings.h"
#include "crypto/hash.h"
#include "cryptonote_core/checkpoints_create.h"
#include "cryptonote_core/checkpoints.h"
#include "cryptonote_core/cryptonote_core.h"
#if defined(PER_BLOCK_CHECKPOINT)
#include "blocks/blocks.h"
@ -840,7 +840,7 @@ bool Blockchain::switch_to_alternative_blockchain(std::list<blocks_ext_by_hash::
}
}
//removing alt_chain entries from alternative chain
//removing alt_chain entries from alternative chains container
for (auto ch_ent: alt_chain)
{
m_alternative_chains.erase(ch_ent);
@ -991,8 +991,7 @@ bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_bl
return true;
}
//------------------------------------------------------------------
// get the block sizes of the last <count> blocks, starting at <from_height>
// and return by reference <sz>.
// get the block sizes of the last <count> blocks, and return by reference <sz>.
void Blockchain::get_last_n_blocks_sizes(std::vector<size_t>& sz, size_t count) const
{
LOG_PRINT_L3("Blockchain::" << __func__);
@ -1408,6 +1407,10 @@ bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::list<block
//TODO: This function *looks* like it won't need to be rewritten
// to use BlockchainDB, as it calls other functions that were,
// but it warrants some looking into later.
//
//FIXME: This function appears to want to return false if any transactions
// that belong with blocks are missing, but not if blocks themselves
// are missing.
bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NOTIFY_RESPONSE_GET_OBJECTS::request& rsp)
{
LOG_PRINT_L3("Blockchain::" << __func__);
@ -1421,6 +1424,9 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
{
std::list<crypto::hash> missed_tx_ids;
std::list<transaction> txs;
// FIXME: s/rsp.missed_ids/missed_tx_id/ ? Seems like rsp.missed_ids
// is for missed blocks, not missed transactions as well.
get_transactions(bl.tx_hashes, txs, missed_tx_ids);
if (missed_tx_ids.size() != 0)
@ -1668,6 +1674,8 @@ uint64_t Blockchain::block_difficulty(uint64_t i) const
return 0;
}
//------------------------------------------------------------------
//TODO: return type should be void, throw on exception
// alternatively, return true only if no blocks missed
template<class t_ids_container, class t_blocks_container, class t_missed_container>
bool Blockchain::get_blocks(const t_ids_container& block_ids, t_blocks_container& blocks, t_missed_container& missed_bs) const
{
@ -1692,6 +1700,8 @@ bool Blockchain::get_blocks(const t_ids_container& block_ids, t_blocks_container
return true;
}
//------------------------------------------------------------------
//TODO: return type should be void, throw on exception
// alternatively, return true only if no transactions missed
template<class t_ids_container, class t_tx_container, class t_missed_container>
bool Blockchain::get_transactions(const t_ids_container& txs_ids, t_tx_container& txs, t_missed_container& missed_txs) const
{
@ -1708,7 +1718,6 @@ bool Blockchain::get_transactions(const t_ids_container& txs_ids, t_tx_container
{
missed_txs.push_back(tx_hash);
}
//FIXME: is this the correct way to handle this?
catch (const std::exception& e)
{
return false;
@ -1965,6 +1974,11 @@ bool Blockchain::get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<u
return true;
}
//------------------------------------------------------------------
//FIXME: it seems this function is meant to be merely a wrapper around
// another function of the same name, this one adding one bit of
// functionality. Should probably move anything more than that
// (getting the hash of the block at height max_used_block_id)
// to the other function to keep everything in one place.
// This function overloads its sister function with
// an extra value (hash of highest block that holds an output used as input)
// as a return-by-reference.
@ -1975,6 +1989,7 @@ bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t& max_used_block
#if defined(PER_BLOCK_CHECKPOINT)
// check if we're doing per-block checkpointing
// FIXME: investigate why this block returns
if (m_db->height() < m_blocks_hash_check.size() && kept_by_block)
{
TIME_MEASURE_START(a);
@ -2038,6 +2053,10 @@ bool Blockchain::have_tx_keyimges_as_spent(const transaction &tx) const
}
//------------------------------------------------------------------
// This function validates transaction inputs and their keys.
// FIXME: consider moving functionality specific to one input into
// check_tx_input() rather than here, and use this function simply
// to iterate the inputs as necessary (splitting the task
// using threads, etc.)
bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t* pmax_used_block_height)
{
LOG_PRINT_L3("Blockchain::" << __func__);
@ -2320,7 +2339,7 @@ bool Blockchain::check_tx_input(const txin_to_key& txin, const crypto::hash& tx_
output_keys.clear();
//check ring signature
// collect output keys
outputs_visitor vi(output_keys, *this);
if (!scan_outputkeys_for_indexes(txin, vi, tx_prefix_hash, pmax_related_block_height))
{
@ -2617,6 +2636,11 @@ leave:
txs.push_back(tx);
TIME_MEASURE_START(dd);
// FIXME: the storage should not be responsible for validation.
// If it does any, it is merely a sanity check.
// Validation is the purview of the Blockchain class
// - TW
//
// ND: this is not needed, db->add_block() checks for duplicate k_images and fails accordingly.
// if (!check_for_double_spend(tx, keys))
// {
@ -2797,6 +2821,8 @@ bool Blockchain::add_new_block(const block& bl_, block_verification_context& bvc
return handle_block_to_main_chain(bl, id, bvc);
}
//------------------------------------------------------------------
//TODO: Refactor, consider returning a failure height and letting
// caller decide course of action.
void Blockchain::check_against_checkpoints(const checkpoints& points, bool enforce)
{
const auto& pts = points.get_points();
@ -2834,16 +2860,16 @@ void Blockchain::check_against_checkpoints(const checkpoints& points, bool enfor
// with an existing checkpoint.
bool Blockchain::update_checkpoints(const std::string& file_path, bool check_dns)
{
if (!cryptonote::load_checkpoints_from_json(m_checkpoints, file_path))
if (!m_checkpoints.load_checkpoints_from_json(file_path))
{
return false;
return false;
}
// if we're checking both dns and json, load checkpoints from dns.
// if we're not hard-enforcing dns checkpoints, handle accordingly
if (m_enforce_dns_checkpoints && check_dns)
{
if (!cryptonote::load_checkpoints_from_dns(m_checkpoints))
if (!m_checkpoints.load_checkpoints_from_dns())
{
return false;
}
@ -2851,7 +2877,7 @@ bool Blockchain::update_checkpoints(const std::string& file_path, bool check_dns
else if (check_dns)
{
checkpoints dns_points;
cryptonote::load_checkpoints_from_dns(dns_points);
dns_points.load_checkpoints_from_dns();
if (m_checkpoints.check_for_conflicts(dns_points))
{
check_against_checkpoints(dns_points, false);
@ -2878,6 +2904,8 @@ void Blockchain::block_longhash_worker(const uint64_t height, const std::vector<
TIME_MEASURE_START(t);
slow_hash_allocate_state();
//FIXME: height should be changing here, as get_block_longhash expects
// the height of the block passed to it
for (const auto & block : blocks)
{
crypto::hash id = get_block_hash(block);
@ -2933,6 +2961,7 @@ bool Blockchain::cleanup_handle_incoming_blocks(bool force_sync)
}
//------------------------------------------------------------------
//FIXME: unused parameter txs
void Blockchain::output_scan_worker(const uint64_t amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, std::unordered_map<crypto::hash, cryptonote::transaction> &txs) const
{
try

890
src/cryptonote_core/blockchain.h
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8
src/cryptonote_core/blockchain_storage.cpp
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@ -48,7 +48,7 @@
#include "common/boost_serialization_helper.h"
#include "warnings.h"
#include "crypto/hash.h"
#include "cryptonote_core/checkpoints_create.h"
#include "cryptonote_core/checkpoints.h"
//#include "serialization/json_archive.h"
#include "../../contrib/otshell_utils/utils.hpp"
#include "../../src/p2p/data_logger.hpp"
@ -1854,7 +1854,7 @@ void blockchain_storage::check_against_checkpoints(const checkpoints& points, bo
// with an existing checkpoint.
bool blockchain_storage::update_checkpoints(const std::string& file_path, bool check_dns)
{
if (!cryptonote::load_checkpoints_from_json(m_checkpoints, file_path))
if (!m_checkpoints.load_checkpoints_from_json(file_path))
{
return false;
}
@ -1863,7 +1863,7 @@ bool blockchain_storage::update_checkpoints(const std::string& file_path, bool c
// if we're not hard-enforcing dns checkpoints, handle accordingly
if (m_enforce_dns_checkpoints && check_dns)
{
if (!cryptonote::load_checkpoints_from_dns(m_checkpoints))
if (!m_checkpoints.load_checkpoints_from_dns())
{
return false;
}
@ -1871,7 +1871,7 @@ bool blockchain_storage::update_checkpoints(const std::string& file_path, bool c
else if (check_dns)
{
checkpoints dns_points;
cryptonote::load_checkpoints_from_dns(dns_points, m_testnet);
dns_points.load_checkpoints_from_dns(m_testnet);
if (m_checkpoints.check_for_conflicts(dns_points))
{
check_against_checkpoints(dns_points, false);

251
src/cryptonote_core/checkpoints.cpp
View file

@ -1,21 +1,21 @@
// 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
@ -25,14 +25,44 @@
// 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
#include "include_base_utils.h"
using namespace epee;
#include "checkpoints.h"
#include "common/dns_utils.h"
#include "include_base_utils.h"
#include <sstream>
#include <random>
namespace
{
bool dns_records_match(const std::vector<std::string>& a, const std::vector<std::string>& b)
{
if (a.size() != b.size()) return false;
for (const auto& record_in_a : a)
{
bool ok = false;
for (const auto& record_in_b : b)
{
if (record_in_a == record_in_b)
{
ok = true;
break;
}
}
if (!ok) return false;
}
return true;
}
} // anonymous namespace
namespace cryptonote
{
//---------------------------------------------------------------------------
@ -84,10 +114,7 @@ namespace cryptonote
return check_block(height, h, ignored);
}
//---------------------------------------------------------------------------
// this basically says if the blockchain is smaller than the first
// checkpoint then alternate blocks are allowed. Alternatively, if the
// last checkpoint *before* the end of the current chain is also before
// the block to be added, then this is fine.
//FIXME: is this the desired behavior?
bool checkpoints::is_alternative_block_allowed(uint64_t blockchain_height, uint64_t block_height) const
{
if (0 == block_height)
@ -128,4 +155,206 @@ namespace cryptonote
}
return true;
}
bool checkpoints::init_default_checkpoints()
{
ADD_CHECKPOINT(1, "771fbcd656ec1464d3a02ead5e18644030007a0fc664c0a964d30922821a8148");
ADD_CHECKPOINT(10, "c0e3b387e47042f72d8ccdca88071ff96bff1ac7cde09ae113dbb7ad3fe92381");
ADD_CHECKPOINT(100, "ac3e11ca545e57c49fca2b4e8c48c03c23be047c43e471e1394528b1f9f80b2d");
ADD_CHECKPOINT(1000, "5acfc45acffd2b2e7345caf42fa02308c5793f15ec33946e969e829f40b03876");
ADD_CHECKPOINT(10000, "c758b7c81f928be3295d45e230646de8b852ec96a821eac3fea4daf3fcac0ca2");
ADD_CHECKPOINT(22231, "7cb10e29d67e1c069e6e11b17d30b809724255fee2f6868dc14cfc6ed44dfb25");
ADD_CHECKPOINT(29556, "53c484a8ed91e4da621bb2fa88106dbde426fe90d7ef07b9c1e5127fb6f3a7f6");
ADD_CHECKPOINT(50000, "0fe8758ab06a8b9cb35b7328fd4f757af530a5d37759f9d3e421023231f7b31c");
ADD_CHECKPOINT(80000, "a62dcd7b536f22e003ebae8726e9e7276f63d594e264b6f0cd7aab27b66e75e3");
ADD_CHECKPOINT(202612, "bbd604d2ba11ba27935e006ed39c9bfdd99b76bf4a50654bc1e1e61217962698");
ADD_CHECKPOINT(202613, "e2aa337e78df1f98f462b3b1e560c6b914dec47b610698b7b7d1e3e86b6197c2");
ADD_CHECKPOINT(202614, "c29e3dc37d8da3e72e506e31a213a58771b24450144305bcba9e70fa4d6ea6fb");
ADD_CHECKPOINT(205000, "5d3d7a26e6dc7535e34f03def711daa8c263785f73ec1fadef8a45880fde8063");
ADD_CHECKPOINT(220000, "9613f455933c00e3e33ac315cc6b455ee8aa0c567163836858c2d9caff111553");
ADD_CHECKPOINT(230300, "bae7a80c46859db355556e3a9204a337ae8f24309926a1312323fdecf1920e61");
ADD_CHECKPOINT(230700, "93e631240ceac831da1aebfc5dac8f722c430463024763ebafa888796ceaeedf");
ADD_CHECKPOINT(231350, "b5add137199b820e1ea26640e5c3e121fd85faa86a1e39cf7e6cc097bdeb1131");
ADD_CHECKPOINT(232150, "955de8e6b6508af2c24f7334f97beeea651d78e9ade3ab18fec3763be3201aa8");
ADD_CHECKPOINT(249380, "654fb0a81ce3e5caf7e3264a70f447d4bd07586c08fa50f6638cc54da0a52b2d");
ADD_CHECKPOINT(460000, "75037a7aed3e765db96c75bcf908f59d690a5f3390baebb9edeafd336a1c4831");
ADD_CHECKPOINT(500000, "2428f0dbe49796be05ed81b347f53e1f7f44aed0abf641446ec2b94cae066b02");
ADD_CHECKPOINT(600000, "f5828ebf7d7d1cb61762c4dfe3ccf4ecab2e1aad23e8113668d981713b7a54c5");
ADD_CHECKPOINT(700000, "12be9b3d210b93f574d2526abb9c1ab2a881b479131fd0d4f7dac93875f503cd");
ADD_CHECKPOINT(825000, "56503f9ad766774b575be3aff73245e9d159be88132c93d1754764f28da2ff60");
ADD_CHECKPOINT(900000, "d9958d0e7dcf91a5a7b11de225927bf7efc6eb26240315ce12372be902cc1337");
ADD_CHECKPOINT(913193, "5292d5d56f6ba4de33a58d9a34d263e2cb3c6fee0aed2286fd4ac7f36d53c85f");
return true;
}
bool checkpoints::load_checkpoints_from_json(const std::string json_hashfile_fullpath)
{
boost::system::error_code errcode;
if (! (boost::filesystem::exists(json_hashfile_fullpath, errcode)))
{
LOG_PRINT_L1("Blockchain checkpoints file not found");
return true;
}
LOG_PRINT_L1("Adding checkpoints from blockchain hashfile");
uint64_t prev_max_height = get_max_height();
LOG_PRINT_L1("Hard-coded max checkpoint height is " << prev_max_height);
t_hash_json hashes;
epee::serialization::load_t_from_json_file(hashes, json_hashfile_fullpath);
for (std::vector<t_hashline>::const_iterator it = hashes.hashlines.begin(); it != hashes.hashlines.end(); )
{
uint64_t height;
height = it->height;
if (height <= prev_max_height) {
LOG_PRINT_L1("ignoring checkpoint height " << height);
} else {
std::string blockhash = it->hash;
LOG_PRINT_L1("Adding checkpoint height " << height << ", hash=" << blockhash);
ADD_CHECKPOINT(height, blockhash);
}
++it;
}
return true;
}
bool checkpoints::load_checkpoints_from_dns(bool testnet)
{
// All four MoneroPulse domains have DNSSEC on and valid
static const std::vector<std::string> dns_urls = { "checkpoints.moneropulse.se"
, "checkpoints.moneropulse.org"
, "checkpoints.moneropulse.net"
, "checkpoints.moneropulse.co"
};
static const std::vector<std::string> testnet_dns_urls = { "testpoints.moneropulse.se"
, "testpoints.moneropulse.org"
, "testpoints.moneropulse.net"
, "testpoints.moneropulse.co"
};
std::vector<std::vector<std::string> > records;
records.resize(dns_urls.size());
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<int> dis(0, dns_urls.size() - 1);
size_t first_index = dis(gen);
bool avail, valid;
size_t cur_index = first_index;
do
{
std::string url;
if (testnet)
{
url = testnet_dns_urls[cur_index];
}
else
{
url = dns_urls[cur_index];
}
records[cur_index] = tools::DNSResolver::instance().get_txt_record(url, avail, valid);
if (!avail)
{
records[cur_index].clear();
LOG_PRINT_L2("DNSSEC not available for checkpoint update at URL: " << url << ", skipping.");
}
if (!valid)
{
records[cur_index].clear();
LOG_PRINT_L2("DNSSEC validation failed for checkpoint update at URL: " << url << ", skipping.");
}
cur_index++;
if (cur_index == dns_urls.size())
{
cur_index = 0;
}
records[cur_index].clear();
} while (cur_index != first_index);
size_t num_valid_records = 0;
for( const auto& record_set : records)
{
if (record_set.size() != 0)
{
num_valid_records++;
}
}
if (num_valid_records < 2)
{
LOG_PRINT_L0("WARNING: no two valid MoneroPulse DNS checkpoint records were received");
return true;
}
int good_records_index = -1;
for (size_t i = 0; i < records.size() - 1; ++i)
{
if (records[i].size() == 0) continue;
for (size_t j = i + 1; j < records.size(); ++j)
{
if (dns_records_match(records[i], records[j]))
{
good_records_index = i;
break;
}
}
if (good_records_index >= 0) break;
}
if (good_records_index < 0)
{
LOG_PRINT_L0("WARNING: no two MoneroPulse DNS checkpoint records matched");
return true;
}
for (auto& record : records[good_records_index])
{
auto pos = record.find(":");
if (pos != std::string::npos)
{
uint64_t height;
crypto::hash hash;
// parse the first part as uint64_t,
// if this fails move on to the next record
std::stringstream ss(record.substr(0, pos));
if (!(ss >> height))
{
continue;
}
// parse the second part as crypto::hash,
// if this fails move on to the next record
std::string hashStr = record.substr(pos + 1);
if (!epee::string_tools::parse_tpod_from_hex_string(hashStr, hash))
{
continue;
}
ADD_CHECKPOINT(height, hashStr);
}
}
return true;
}
bool checkpoints::load_new_checkpoints(const std::string json_hashfile_fullpath, bool testnet, bool dns)
{
bool result;
result = load_checkpoints_from_json(json_hashfile_fullpath);
if (dns)
{
result &= load_checkpoints_from_dns(testnet);
}
return result;
}
}

181
src/cryptonote_core/checkpoints.h
View file

@ -1,21 +1,21 @@
// 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
@ -25,30 +25,193 @@
// 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 <map>
#include <vector>
#include "cryptonote_basic_impl.h"
#include "misc_log_ex.h"
#include "storages/portable_storage_template_helper.h" // epee json include
#define ADD_CHECKPOINT(h, hash) CHECK_AND_ASSERT(add_checkpoint(h, hash), false);
#define JSON_HASH_FILE_NAME "checkpoints.json"
namespace cryptonote
{
/**
* @brief A container for blockchain checkpoints
*
* A checkpoint is a pre-defined hash for the block at a given height.
* Some of these are compiled-in, while others can be loaded at runtime
* either from a json file or via DNS from a checkpoint-hosting server.
*/
class checkpoints
{
public:
/**
* @brief default constructor
*/
checkpoints();
/**
* @brief adds a checkpoint to the container
*
* @param height the height of the block the checkpoint is for
* @param hash_str the hash of the block, as a string
*
* @return false if parsing the hash fails, or if the height is a duplicate
* AND the existing checkpoint hash does not match the new one,
* otherwise returns true
*/
bool add_checkpoint(uint64_t height, const std::string& hash_str);
/**
* @brief checks if there is a checkpoint in the future
*
* This function checks if the height passed is lower than the highest
* checkpoint.
*
* @param height the height to check against
*
* @return false if no checkpoints, otherwise returns whether or not
* the height passed is lower than the highest checkpoint.
*/
bool is_in_checkpoint_zone(uint64_t height) const;
bool check_block(uint64_t height, const crypto::hash& h) const;
/**
* @brief checks if the given height and hash agree with the checkpoints
*
* This function checks if the given height and hash exist in the
* checkpoints container. If so, it returns whether or not the passed
* parameters match the stored values.
*
* @param height the height to be checked
* @param h the hash to be checked
* @param is_a_checkpoint return-by-reference if there is a checkpoint at the given height
*
* @return true if there is no checkpoint at the given height,
* true if the passed parameters match the stored checkpoint,
* false otherwise
*/
bool check_block(uint64_t height, const crypto::hash& h, bool& is_a_checkpoint) const;
/**
* @overload
*/
bool check_block(uint64_t height, const crypto::hash& h) const;
/**
* @brief checks if alternate chain blocks should be kept for a given height
*
* this basically says if the blockchain is smaller than the first
* checkpoint then alternate blocks are allowed. Alternatively, if the
* last checkpoint *before* the end of the current chain is also before
* the block to be added, then this is fine.
*
* @param blockchain_height the current blockchain height
* @param block_height the height of the block to be added as alternate
*
* @return true if alternate blocks are allowed given the parameters,
* otherwise false
*/
bool is_alternative_block_allowed(uint64_t blockchain_height, uint64_t block_height) const;
/**
* @brief gets the highest checkpoint height
*
* @return the height of the highest checkpoint
*/
uint64_t get_max_height() const;
/**
* @brief gets the checkpoints container
*
* @return a const reference to the checkpoints container
*/
const std::map<uint64_t, crypto::hash>& get_points() const;
/**
* @brief checks if our checkpoints container conflicts with another
*
* A conflict refers to a case where both checkpoint sets have a checkpoint
* for a specific height but their hashes for that height do not match.
*
* @param other the other checkpoints instance to check against
*
* @return false if any conflict is found, otherwise true
*/
bool check_for_conflicts(const checkpoints& other) const;
/**
* @brief loads the default main chain checkpoints
*
* @return true unless adding a checkpoint fails
*/
bool init_default_checkpoints();
/**
* @brief load new checkpoints
*
* Loads new checkpoints from the specified json file, as well as
* (optionally) from DNS.
*
* @param json_hashfile_fullpath path to the json checkpoints file
* @param testnet whether to load testnet checkpoints or mainnet
* @param dns whether or not to load DNS checkpoints
*
* @return true if loading successful and no conflicts
*/
bool load_new_checkpoints(const std::string json_hashfile_fullpath, bool testnet=false, bool dns=true);
/**
* @brief load new checkpoints from json
*
* @param json_hashfile_fullpath path to the json checkpoints file
*
* @return true if loading successful and no conflicts
*/
bool load_checkpoints_from_json(const std::string json_hashfile_fullpath);
/**
* @brief load new checkpoints from DNS
*
* @param testnet whether to load testnet checkpoints or mainnet
*
* @return true if loading successful and no conflicts
*/
bool load_checkpoints_from_dns(bool testnet = false);
private:
std::map<uint64_t, crypto::hash> m_points;
/**
* @brief struct for loading a checkpoint from json
*/
struct t_hashline
{
uint64_t height; //!< the height of the checkpoint
std::string hash; //!< the hash for the checkpoint
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(height)
KV_SERIALIZE(hash)
END_KV_SERIALIZE_MAP()
};
/**
* @brief struct for loading many checkpoints from json
*/
struct t_hash_json {
std::vector<t_hashline> hashlines; //!< the checkpoint lines from the file
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(hashlines)
END_KV_SERIALIZE_MAP()
};
std::map<uint64_t, crypto::hash> m_points; //!< the checkpoints container
};
}

280
src/cryptonote_core/checkpoints_create.cpp
View file

@ -1,280 +0,0 @@
// 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
#include "checkpoints_create.h"
#include "common/dns_utils.h"
#include "include_base_utils.h"
#include <sstream>
#include <random>
#include "storages/portable_storage_template_helper.h" // epee json include
namespace
{
bool dns_records_match(const std::vector<std::string>& a, const std::vector<std::string>& b)
{
if (a.size() != b.size()) return false;
for (const auto& record_in_a : a)
{
bool ok = false;
for (const auto& record_in_b : b)
{
if (record_in_a == record_in_b)
{
ok = true;
break;
}
}
if (!ok) return false;
}
return true;
}
} // anonymous namespace
namespace cryptonote
{
struct t_hashline
{
uint64_t height;
std::string hash;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(height)
KV_SERIALIZE(hash)
END_KV_SERIALIZE_MAP()
};
struct t_hash_json {
std::vector<t_hashline> hashlines;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(hashlines)
END_KV_SERIALIZE_MAP()
};
bool create_checkpoints(cryptonote::checkpoints& checkpoints)
{
ADD_CHECKPOINT(1, "771fbcd656ec1464d3a02ead5e18644030007a0fc664c0a964d30922821a8148");
ADD_CHECKPOINT(10, "c0e3b387e47042f72d8ccdca88071ff96bff1ac7cde09ae113dbb7ad3fe92381");
ADD_CHECKPOINT(100, "ac3e11ca545e57c49fca2b4e8c48c03c23be047c43e471e1394528b1f9f80b2d");
ADD_CHECKPOINT(1000, "5acfc45acffd2b2e7345caf42fa02308c5793f15ec33946e969e829f40b03876");
ADD_CHECKPOINT(10000, "c758b7c81f928be3295d45e230646de8b852ec96a821eac3fea4daf3fcac0ca2");
ADD_CHECKPOINT(22231, "7cb10e29d67e1c069e6e11b17d30b809724255fee2f6868dc14cfc6ed44dfb25");
ADD_CHECKPOINT(29556, "53c484a8ed91e4da621bb2fa88106dbde426fe90d7ef07b9c1e5127fb6f3a7f6");
ADD_CHECKPOINT(50000, "0fe8758ab06a8b9cb35b7328fd4f757af530a5d37759f9d3e421023231f7b31c");
ADD_CHECKPOINT(80000, "a62dcd7b536f22e003ebae8726e9e7276f63d594e264b6f0cd7aab27b66e75e3");
ADD_CHECKPOINT(202612, "bbd604d2ba11ba27935e006ed39c9bfdd99b76bf4a50654bc1e1e61217962698");
ADD_CHECKPOINT(202613, "e2aa337e78df1f98f462b3b1e560c6b914dec47b610698b7b7d1e3e86b6197c2");
ADD_CHECKPOINT(202614, "c29e3dc37d8da3e72e506e31a213a58771b24450144305bcba9e70fa4d6ea6fb");
ADD_CHECKPOINT(205000, "5d3d7a26e6dc7535e34f03def711daa8c263785f73ec1fadef8a45880fde8063");
ADD_CHECKPOINT(220000, "9613f455933c00e3e33ac315cc6b455ee8aa0c567163836858c2d9caff111553");
ADD_CHECKPOINT(230300, "bae7a80c46859db355556e3a9204a337ae8f24309926a1312323fdecf1920e61");
ADD_CHECKPOINT(230700, "93e631240ceac831da1aebfc5dac8f722c430463024763ebafa888796ceaeedf");
ADD_CHECKPOINT(231350, "b5add137199b820e1ea26640e5c3e121fd85faa86a1e39cf7e6cc097bdeb1131");
ADD_CHECKPOINT(232150, "955de8e6b6508af2c24f7334f97beeea651d78e9ade3ab18fec3763be3201aa8");
ADD_CHECKPOINT(249380, "654fb0a81ce3e5caf7e3264a70f447d4bd07586c08fa50f6638cc54da0a52b2d");
ADD_CHECKPOINT(300000, "0c1cd46df6ccff90ec4ab493281f2583c344cd62216c427628990fe9db1bb8b6");
ADD_CHECKPOINT(400000, "1b2b0e7a30e59691491529a3d506d1ba3d6052d0f6b52198b7330b28a6f1b6ac");
ADD_CHECKPOINT(450000, "4d098b511ca97723e81737c448343cfd4e6dadb3d8a0e757c6e4d595e6e48357");
ADD_CHECKPOINT(460000, "75037a7aed3e765db96c75bcf908f59d690a5f3390baebb9edeafd336a1c4831");
ADD_CHECKPOINT(500000, "2428f0dbe49796be05ed81b347f53e1f7f44aed0abf641446ec2b94cae066b02");
ADD_CHECKPOINT(600000, "f5828ebf7d7d1cb61762c4dfe3ccf4ecab2e1aad23e8113668d981713b7a54c5");
ADD_CHECKPOINT(700000, "12be9b3d210b93f574d2526abb9c1ab2a881b479131fd0d4f7dac93875f503cd");
ADD_CHECKPOINT(825000, "56503f9ad766774b575be3aff73245e9d159be88132c93d1754764f28da2ff60");
ADD_CHECKPOINT(900000, "d9958d0e7dcf91a5a7b11de225927bf7efc6eb26240315ce12372be902cc1337");
ADD_CHECKPOINT(913193, "5292d5d56f6ba4de33a58d9a34d263e2cb3c6fee0aed2286fd4ac7f36d53c85f");
return true;
}
bool load_checkpoints_from_json(cryptonote::checkpoints& checkpoints, std::string json_hashfile_fullpath)
{
boost::system::error_code errcode;
if (! (boost::filesystem::exists(json_hashfile_fullpath, errcode)))
{
LOG_PRINT_L1("Blockchain checkpoints file not found");
return true;
}
LOG_PRINT_L1("Adding checkpoints from blockchain hashfile");
uint64_t prev_max_height = checkpoints.get_max_height();
LOG_PRINT_L1("Hard-coded max checkpoint height is " << prev_max_height);
t_hash_json hashes;
epee::serialization::load_t_from_json_file(hashes, json_hashfile_fullpath);
for (std::vector<t_hashline>::const_iterator it = hashes.hashlines.begin(); it != hashes.hashlines.end(); )
{
uint64_t height;
height = it->height;
if (height <= prev_max_height) {
LOG_PRINT_L1("ignoring checkpoint height " << height);
} else {
std::string blockhash = it->hash;
LOG_PRINT_L1("Adding checkpoint height " << height << ", hash=" << blockhash);
ADD_CHECKPOINT(height, blockhash);
}
++it;
}
return true;
}
bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints, bool testnet)
{
// All four MoneroPulse domains have DNSSEC on and valid
static const std::vector<std::string> dns_urls = { "checkpoints.moneropulse.se"
, "checkpoints.moneropulse.org"
, "checkpoints.moneropulse.net"
, "checkpoints.moneropulse.co"
};
static const std::vector<std::string> testnet_dns_urls = { "testpoints.moneropulse.se"
, "testpoints.moneropulse.org"
, "testpoints.moneropulse.net"
, "testpoints.moneropulse.co"
};
std::vector<std::vector<std::string> > records;
records.resize(dns_urls.size());
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<int> dis(0, dns_urls.size() - 1);
size_t first_index = dis(gen);
bool avail, valid;
size_t cur_index = first_index;
do
{
std::string url;
if (testnet)
{
url = testnet_dns_urls[cur_index];
}
else
{
url = dns_urls[cur_index];
}
records[cur_index] = tools::DNSResolver::instance().get_txt_record(url, avail, valid);
if (!avail)
{
records[cur_index].clear();
LOG_PRINT_L2("DNSSEC not available for checkpoint update at URL: " << url << ", skipping.");
}
if (!valid)
{
records[cur_index].clear();
LOG_PRINT_L2("DNSSEC validation failed for checkpoint update at URL: " << url << ", skipping.");
}
cur_index++;
if (cur_index == dns_urls.size())
{
cur_index = 0;
}
records[cur_index].clear();
} while (cur_index != first_index);
size_t num_valid_records = 0;
for( const auto& record_set : records)
{
if (record_set.size() != 0)
{
num_valid_records++;
}
}
if (num_valid_records < 2)
{
LOG_PRINT_L0("WARNING: no two valid MoneroPulse DNS checkpoint records were received");
return true;
}
int good_records_index = -1;
for (size_t i = 0; i < records.size() - 1; ++i)
{
if (records[i].size() == 0) continue;
for (size_t j = i + 1; j < records.size(); ++j)
{
if (dns_records_match(records[i], records[j]))
{
good_records_index = i;
break;
}
}
if (good_records_index >= 0) break;
}
if (good_records_index < 0)
{
LOG_PRINT_L0("WARNING: no two MoneroPulse DNS checkpoint records matched");
return true;
}
for (auto& record : records[good_records_index])
{
auto pos = record.find(":");
if (pos != std::string::npos)
{
uint64_t height;
crypto::hash hash;
// parse the first part as uint64_t,
// if this fails move on to the next record
std::stringstream ss(record.substr(0, pos));
if (!(ss >> height))
{
continue;
}
// parse the second part as crypto::hash,
// if this fails move on to the next record
std::string hashStr = record.substr(pos + 1);
if (!epee::string_tools::parse_tpod_from_hex_string(hashStr, hash))
{
continue;
}
ADD_CHECKPOINT(height, hashStr);
}
}
return true;
}
bool load_new_checkpoints(cryptonote::checkpoints& checkpoints, std::string json_hashfile_fullpath)
{
// TODO: replace hard-coded url with const string or #define
return (load_checkpoints_from_json(checkpoints, json_hashfile_fullpath) && load_checkpoints_from_dns(checkpoints));
}
} // namespace cryptonote

48
src/cryptonote_core/checkpoints_create.h
View file

@ -1,48 +0,0 @@
// 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 "checkpoints.h"
#include "misc_log_ex.h"
#define ADD_CHECKPOINT(h, hash) CHECK_AND_ASSERT(checkpoints.add_checkpoint(h, hash), false);
#define JSON_HASH_FILE_NAME "checkpoints.json"
namespace cryptonote
{
bool create_checkpoints(cryptonote::checkpoints& checkpoints);
bool load_checkpoints_from_json(cryptonote::checkpoints& checkpoints, std::string json_hashfile_fullpath);
bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints, bool testnet = false);
bool load_new_checkpoints(cryptonote::checkpoints& checkpoints, std::string json_hashfile_fullpath);
} // namespace cryptonote

19
src/cryptonote_core/cryptonote_core.cpp
View file

@ -42,7 +42,7 @@ using namespace epee;
#include "cryptonote_format_utils.h"
#include "misc_language.h"
#include <csignal>
#include "cryptonote_core/checkpoints_create.h"
#include "cryptonote_core/checkpoints.h"
#include "blockchain_db/blockchain_db.h"
#include "blockchain_db/lmdb/db_lmdb.h"
#if defined(BERKELEY_DB)
@ -159,7 +159,7 @@ namespace cryptonote
if (!m_testnet && !m_fakechain)
{
cryptonote::checkpoints checkpoints;
if (!cryptonote::create_checkpoints(checkpoints))
if (!checkpoints.init_default_checkpoints())
{
throw std::runtime_error("Failed to initialize checkpoints");
}
@ -415,7 +415,7 @@ namespace cryptonote
CHECK_AND_ASSERT_MES(update_checkpoints(), false, "One or more checkpoints loaded from json or dns conflicted with existing checkpoints.");
r = m_miner.init(vm, m_testnet);
CHECK_AND_ASSERT_MES(r, false, "Failed to initialize blockchain storage");
CHECK_AND_ASSERT_MES(r, false, "Failed to initialize miner instance");
return load_state_data();
}
@ -634,11 +634,6 @@ namespace cryptonote
return m_blockchain_storage.get_total_transactions();
}
//-----------------------------------------------------------------------------------------------
//bool core::get_outs(uint64_t amount, std::list<crypto::public_key>& pkeys)
//{
// return m_blockchain_storage.get_outs(amount, pkeys);
//}
//-----------------------------------------------------------------------------------------------
bool core::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)
{
if(m_mempool.have_tx(tx_hash))
@ -770,10 +765,6 @@ namespace cryptonote
{
m_miner.on_synchronized();
}
//bool core::get_backward_blocks_sizes(uint64_t from_height, std::vector<size_t>& sizes, size_t count)
//{
// return m_blockchain_storage.get_backward_blocks_sizes(from_height, sizes, count);
//}
//-----------------------------------------------------------------------------------------------
bool core::add_new_block(const block& b, block_verification_context& bvc)
{
@ -894,10 +885,6 @@ namespace cryptonote
return m_blockchain_storage.get_block_by_hash(h, blk);
}
//-----------------------------------------------------------------------------------------------
//void core::get_all_known_block_ids(std::list<crypto::hash> &main, std::list<crypto::hash> &alt, std::list<crypto::hash> &invalid) {
// m_blockchain_storage.get_all_known_block_ids(main, alt, invalid);
//}
//-----------------------------------------------------------------------------------------------
std::string core::print_pool(bool short_format) const
{
return m_mempool.print_pool(short_format);

670
src/cryptonote_core/cryptonote_core.h
View file

@ -63,157 +63,739 @@ namespace cryptonote
/************************************************************************/
/* */
/************************************************************************/
/**
* @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:
core(i_cryptonote_protocol* pprotocol);
bool handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NOTIFY_RESPONSE_GET_OBJECTS::request& rsp, cryptonote_connection_context& context);
bool on_idle();
bool handle_incoming_tx(const blobdata& tx_blob, tx_verification_context& tvc, bool keeped_by_block, bool relayed);
bool handle_incoming_block(const blobdata& block_blob, block_verification_context& bvc, bool update_miner_blocktemplate = true);
bool prepare_handle_incoming_blocks(const std::list<block_complete_entry> &blocks);
bool cleanup_handle_incoming_blocks(bool force_sync = false);
/**
* @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;
bool get_blockchain_top(uint64_t& heeight, crypto::hash& top_id) 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);
}
crypto::hash get_block_id_by_height(uint64_t height) const;
bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<transaction>& txs, std::list<crypto::hash>& missed_txs) const;
bool get_block_by_hash(const crypto::hash &h, block &blk) const;
//void get_all_known_block_ids(std::list<crypto::hash> &main, std::list<crypto::hash> &alt, std::list<crypto::hash> &invalid);
/**
* @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;
//bool get_outs(uint64_t amount, std::list<crypto::public_key>& pkeys);
/**
* @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;
//bool get_backward_blocks_sizes(uint64_t from_height, std::vector<size_t>& sizes, size_t count);
/**
* @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 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
//debug functions
/**
* @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;
//check correct values, amounts and all lightweight checks not related with database
bool check_tx_semantic(const transaction& tx, bool keeped_by_block) const;
//check if tx already in memory pool or in main blockchain
bool check_tx_ring_signature(const txin_to_key& tx, const crypto::hash& tx_prefix_hash, const std::vector<crypto::signature>& sig) const;
bool is_tx_spendtime_unlocked(uint64_t unlock_time) 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);
bool on_update_blocktemplate_interval();
/**
* @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;
void graceful_exit();
/**
* @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;
bool m_test_drop_download = true;
uint64_t m_test_drop_download_height = 0;
static std::atomic<bool> m_fast_exit; //!< whether or not to deinit Blockchain on exit
tx_memory_pool m_mempool;
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 m_blockchain_storage; //!< Blockchain instance
#else
blockchain_storage m_blockchain_storage;
#endif
i_cryptonote_protocol* m_pprotocol;
epee::critical_section m_incoming_tx_lock;
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;
account_public_address m_miner_address;
std::string m_config_folder;
cryptonote_protocol_stub m_protocol_stub;
epee::math_helper::once_a_time_seconds<60*60*12, false> m_store_blockchain_interval;
epee::math_helper::once_a_time_seconds<60*60*2, true> m_fork_moaner;
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;
std::atomic<bool> m_starter_message_showed; //!< has the "daemon will sync now" message been shown?
uint64_t m_target_blockchain_height;
uint64_t m_target_blockchain_height; //!< blockchain height target
bool m_testnet;
bool m_fakechain;
std::string m_checkpoints_path;
time_t m_last_dns_checkpoints_update;
time_t m_last_json_checkpoints_update;
bool m_testnet; //!< are we on testnet?
std::atomic_flag m_checkpoints_updating;
bool m_fakechain; //!< are we using a fake chain (for testing purposes)?
boost::interprocess::file_lock db_lock;
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
};
}

6
src/cryptonote_core/difficulty.cpp
View file

@ -116,8 +116,8 @@ namespace cryptonote {
return !carry;
}
difficulty_type next_difficulty(vector<uint64_t> timestamps, vector<difficulty_type> cumulative_difficulties, size_t target_seconds) {
//cutoff DIFFICULTY_LAG
difficulty_type next_difficulty(std::vector<std::uint64_t> timestamps, std::vector<difficulty_type> cumulative_difficulties, size_t target_seconds) {
if(timestamps.size() > DIFFICULTY_WINDOW)
{
timestamps.resize(DIFFICULTY_WINDOW);
@ -151,6 +151,8 @@ namespace cryptonote {
assert(total_work > 0);
uint64_t low, high;
mul(total_work, target_seconds, low, high);
// blockchain errors "difficulty overhead" if this function returns zero.
// TODO: consider throwing an exception instead
if (high != 0 || low + time_span - 1 < low) {
return 0;
}

12
src/cryptonote_core/difficulty.h
View file

@ -39,6 +39,18 @@ namespace cryptonote
{
typedef std::uint64_t difficulty_type;
/**
* @brief checks if a hash fits the given difficulty
*
* The hash passes if (hash * difficulty) < 2^192.
* Phrased differently, if (hash * difficulty) fits without overflow into
* the least significant 192 bits of the 256 bit multiplication result.
*
* @param hash the hash to check
* @param difficulty the difficulty to check against
*
* @return true if valid, else false
*/
bool check_hash(const crypto::hash &hash, difficulty_type difficulty);
difficulty_type next_difficulty(std::vector<std::uint64_t> timestamps, std::vector<difficulty_type> cumulative_difficulties, size_t target_seconds);
}

1
src/daemon/core.h
View file

@ -28,7 +28,6 @@
#pragma once
#include "cryptonote_core/checkpoints_create.h"
#include "cryptonote_core/cryptonote_core.h"
#include "cryptonote_protocol/cryptonote_protocol_handler.h"
#include "misc_log_ex.h"