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// Copyright (c) 2014-2018, 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 "include_base_utils.h"
using namespace epee;
#include "checkpoints.h"
#include "common/dns_utils.h"
#include "include_base_utils.h"
#include "string_tools.h"
#include "storages/portable_storage_template_helper.h" // epee json include
#include "serialization/keyvalue_serialization.h"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "checkpoints"
namespace cryptonote
{
/**
* @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()
};
//---------------------------------------------------------------------------
checkpoints::checkpoints()
{
}
//---------------------------------------------------------------------------
bool checkpoints::add_checkpoint(uint64_t height, const std::string& hash_str)
{
crypto::hash h = crypto::null_hash;
bool r = epee::string_tools::parse_tpod_from_hex_string(hash_str, h);
CHECK_AND_ASSERT_MES(r, false, "Failed to parse checkpoint hash string into binary representation!");
// return false if adding at a height we already have AND the hash is different
if (m_points.count(height))
{
CHECK_AND_ASSERT_MES(h == m_points[height], false, "Checkpoint at given height already exists, and hash for new checkpoint was different!");
}
m_points[height] = h;
return true;
}
//---------------------------------------------------------------------------
bool checkpoints::is_in_checkpoint_zone(uint64_t height) const
{
return !m_points.empty() && (height <= (--m_points.end())->first);
}
//---------------------------------------------------------------------------
bool checkpoints::check_block(uint64_t height, const crypto::hash& h, bool& is_a_checkpoint) const
{
auto it = m_points.find(height);
is_a_checkpoint = it != m_points.end();
if(!is_a_checkpoint)
return true;
if(it->second == h)
{
MINFO("CHECKPOINT PASSED FOR HEIGHT " << height << " " << h);
return true;
}else
{
MWARNING("CHECKPOINT FAILED FOR HEIGHT " << height << ". EXPECTED HASH: " << it->second << ", FETCHED HASH: " << h);
return false;
}
}
//---------------------------------------------------------------------------
bool checkpoints::check_block(uint64_t height, const crypto::hash& h) const
{
bool ignored;
return check_block(height, h, ignored);
}
//---------------------------------------------------------------------------
//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)
return false;
auto it = m_points.upper_bound(blockchain_height);
// Is blockchain_height before the first checkpoint?
if (it == m_points.begin())
return true;
--it;
uint64_t checkpoint_height = it->first;
return checkpoint_height < block_height;
}
//---------------------------------------------------------------------------
uint64_t checkpoints::get_max_height() const
{
std::map< uint64_t, crypto::hash >::const_iterator highest =
std::max_element( m_points.begin(), m_points.end(),
( boost::bind(&std::map< uint64_t, crypto::hash >::value_type::first, _1) <
boost::bind(&std::map< uint64_t, crypto::hash >::value_type::first, _2 ) ) );
return highest->first;
}
//---------------------------------------------------------------------------
const std::map<uint64_t, crypto::hash>& checkpoints::get_points() const
{
return m_points;
}
bool checkpoints::check_for_conflicts(const checkpoints& other) const
{
for (auto& pt : other.get_points())
{
if (m_points.count(pt.first))
{
CHECK_AND_ASSERT_MES(pt.second == m_points.at(pt.first), false, "Checkpoint at given height already exists, and hash for new checkpoint was different!");
}
}
return true;
}
bool checkpoints::init_default_checkpoints(network_type nettype)
{
if (nettype == TESTNET)
{
return true;
}
if (nettype == STAGENET)
{
return true;
}
ADD_CHECKPOINT(1, "97f4ce4d7879b3bea54dcec738cd2ebb7952b4e9bb9743262310cd5fec749340");
ADD_CHECKPOINT(10, "305472c87ff86d8afb3ec42634828462b0ed3d929fc05fa1ae668c3bee04837a");
ADD_CHECKPOINT(100, "a92b9deae26e19322041cbc2f850fa905748ae1e5bf69b35ca90b247c5cbfc04");
ADD_CHECKPOINT(1000, "62921e13030b29264439cafaf8320cf8aa039ee6ba7ba29c72f11b50a079269a");
ADD_CHECKPOINT(2000, "b3e1d73e3d0243239481aa76cb075cf2428556f5dc4f2e30428ea2ba36693e97");
ADD_CHECKPOINT(3000, "83a6e1ab394e80b8442b7b70b0e4c3a9fa0143e0ca51a33e829537ef5dd1bf13");
ADD_CHECKPOINT(4000, "7c70722d8cb8106b4bec67e1790614cc6e98db7afd0843b96cdff6960a0e0073");
ADD_CHECKPOINT(5000, "331ee74008e174e5fd1956f64c52793961b321a1366f7c6f7d324e8265df34f6");
ADD_CHECKPOINT(6969, "aa7b66e8c461065139b55c29538a39c33ceda93e587f84d490ed573d80511c87"); //Hard fork to v8
ADD_CHECKPOINT(7000, "2711bd33b107f744ad8bf98c1acefa18658780079496bd2f3a36f2e20b261f8e");
ADD_CHECKPOINT(7500, "5975967c4624f13f058acafe7adf9355e03e8e802eeadc84ccb22ea588bc0762");
ADD_CHECKPOINT(7900, "d9bc18cb35feb6b26bc5a19bbdbf7c852d9cc02883acb5bbce2e87d8b2c86069");
ADD_CHECKPOINT(10000, "bc5bfbf1b26c8f976d1d792ece4c6a7e93064bec62b72f1d5beae74c3f273b3b");
ADD_CHECKPOINT(20000, "52cc7edcb49eb02f28a653b824089a726f4050eb210263ee6f4180d388a1e5cc");
ADD_CHECKPOINT(30000, "d22fde5dd240ade16d3250eb0aa5d1c16dc7cb51c20484e05eb274911032b3fa");
ADD_CHECKPOINT(40000, "aee0d642322542ba069cb1c58ab2acd3560f108d4682c3dc3cb15a54d442d91f");
ADD_CHECKPOINT(50000, "5286ac2a0f39b3aefcba363cd71f2760bd1e0d763cbc81026ebdc3f80a86541f");
ADD_CHECKPOINT(53666, "3f43f56f66ef0c43cf2fd14d0d28fa2aae0ef8f40716773511345750770f1255"); //Hard fork to v9
ADD_CHECKPOINT(54500, "8ed3078b389c2b44add007803d741b58d3fbed2e1ba4139bda702152d8773c9b");
ADD_CHECKPOINT(55000, "4b662ceccefc3247edb4d654dd610b8fb496e85b88a5de43cc2bdd28171b15ff");
ADD_CHECKPOINT(57000, "08a79f09f12bb5d230b63963356a760d51618e526cfc636047a6f3798217c177");
ADD_CHECKPOINT(59000, "180b51ee2c5fbcd4362eb7a29df9422481310dd77d10bccdf8930724c31e007e");
ADD_CHECKPOINT(59900, "18cc0653ef39cb304c68045dba5eb6b885f936281cd939dea04d0e6c9cd4ae2e");
ADD_CHECKPOINT(60000, "0f02aa57a63f79f63dafed9063abe228a37cb19f00430dc3168b8a8f4ae8016c");
ADD_CHECKPOINT(61000, "509aca8c54eb5fe44623768757b6e890ae39d512478c75f614cbff3d91809350");
ADD_CHECKPOINT(62000, "7fe91ad256c08dbd961e04738968be22fb481093fbfa7959bde7796ccceba0e2");
ADD_CHECKPOINT(62150, "1a7c75f8ebeda0e20eb5877181eafd7db0fc887e3fed43e0b27ab2e7bccafd10");
ADD_CHECKPOINT(62269, "4969555d60742afb93925fd96d83ac28f45e6e3c0e583c9fb3c92d9b2100d38f");
ADD_CHECKPOINT(62405, "4d0ae890cf9f875f231c7069508ad28dc429d14814b52db114dfab7519a27584");
ADD_CHECKPOINT(62419, "bd8bf5ac4c4fb07ab4d0d492bd1699def5c095ab6943ad3b63a89d1d8b1ce748");
ADD_CHECKPOINT(62425, "41a922dba6f3906871b2ccaf31ec9c91033470c503959093dae796deda8940ea");
ADD_CHECKPOINT(62479, "a2e8ff4205ba2980eb70921b0b21b5fc656ee273664ea94b860c68ca069b60dd");
ADD_CHECKPOINT(62503, "25fa115962988b4b8f8cfd22744a3e653b22ead8c8468e64caf334fc75a97d08");
ADD_CHECKPOINT(62550, "bde522a8a81c392c98c979434aa1dd9d20b4ca52230ba6ae0362872757808a48");
ADD_CHECKPOINT(62629, "8368e1ce1d421f1fc969364558433e2b2363d0ffcb5f2d946633095e3e6734f5");
ADD_CHECKPOINT(62720, "f871cddd75951e2fe24c282d2bd28396fc922ea519b354ace992a0162cb333ff");
ADD_CHECKPOINT(62733, "8331dbeeaf23173d2235a062373a437befadb6492cceb7640127bf18653a9e61");
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;
if (!epee::serialization::load_t_from_json_file(hashes, json_hashfile_fullpath))
{
MERROR("Error loading checkpoints from " << json_hashfile_fullpath);
return false;
}
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(network_type nettype)
{
std::vector<std::string> records;
// All four MoneroPulse domains have DNSSEC on and valid
static const std::vector<std::string> dns_urls = {
};
static const std::vector<std::string> testnet_dns_urls = {
};
static const std::vector<std::string> stagenet_dns_urls = {
};
if (!tools::dns_utils::load_txt_records_from_dns(records, nettype == TESTNET ? testnet_dns_urls : nettype == STAGENET ? stagenet_dns_urls : dns_urls))
return true; // why true ?
for (const auto& record : records)
{
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, network_type nettype, bool dns)
{
bool result;
result = load_checkpoints_from_json(json_hashfile_fullpath);
if (dns)
{
result &= load_checkpoints_from_dns(nettype);
}
return result;
}
}