Some Random Crypto Guy
316 lines
12 KiB
C++
316 lines
12 KiB
C++
// Copyright (c) 2014-2022, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include "checkpoints.h"
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#include "common/dns_utils.h"
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#include "string_tools.h"
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#include "storages/portable_storage_template_helper.h" // epee json include
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#include "serialization/keyvalue_serialization.h"
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#include <boost/system/error_code.hpp>
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#include <boost/filesystem.hpp>
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#include <functional>
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#include <vector>
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using namespace epee;
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "checkpoints"
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namespace cryptonote
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{
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/**
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* @brief struct for loading a checkpoint from json
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*/
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struct t_hashline
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{
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uint64_t height; //!< the height of the checkpoint
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std::string hash; //!< the hash for the checkpoint
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BEGIN_KV_SERIALIZE_MAP()
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KV_SERIALIZE(height)
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KV_SERIALIZE(hash)
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END_KV_SERIALIZE_MAP()
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};
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/**
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* @brief struct for loading many checkpoints from json
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*/
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struct t_hash_json {
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std::vector<t_hashline> hashlines; //!< the checkpoint lines from the file
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BEGIN_KV_SERIALIZE_MAP()
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KV_SERIALIZE(hashlines)
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END_KV_SERIALIZE_MAP()
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};
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//---------------------------------------------------------------------------
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checkpoints::checkpoints()
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{
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}
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//---------------------------------------------------------------------------
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bool checkpoints::add_checkpoint(uint64_t height, const std::string& hash_str, const std::string& difficulty_str)
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{
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crypto::hash h = crypto::null_hash;
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bool r = epee::string_tools::hex_to_pod(hash_str, h);
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CHECK_AND_ASSERT_MES(r, false, "Failed to parse checkpoint hash string into binary representation!");
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// return false if adding at a height we already have AND the hash is different
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if (m_points.count(height))
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{
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CHECK_AND_ASSERT_MES(h == m_points[height], false, "Checkpoint at given height already exists, and hash for new checkpoint was different!");
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}
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m_points[height] = h;
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if (!difficulty_str.empty())
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{
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try
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{
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difficulty_type difficulty(difficulty_str);
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if (m_difficulty_points.count(height))
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{
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CHECK_AND_ASSERT_MES(difficulty == m_difficulty_points[height], false, "Difficulty checkpoint at given height already exists, and difficulty for new checkpoint was different!");
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}
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m_difficulty_points[height] = difficulty;
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}
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catch (...)
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{
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LOG_ERROR("Failed to parse difficulty checkpoint: " << difficulty_str);
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return false;
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}
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}
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return true;
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}
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//---------------------------------------------------------------------------
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bool checkpoints::is_in_checkpoint_zone(uint64_t height) const
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{
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return !m_points.empty() && (height <= (--m_points.end())->first);
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}
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//---------------------------------------------------------------------------
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bool checkpoints::check_block(uint64_t height, const crypto::hash& h, bool& is_a_checkpoint) const
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{
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auto it = m_points.find(height);
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is_a_checkpoint = it != m_points.end();
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if(!is_a_checkpoint)
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return true;
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if(it->second == h)
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{
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MINFO("CHECKPOINT PASSED FOR HEIGHT " << height << " " << h);
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return true;
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}else
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{
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MWARNING("CHECKPOINT FAILED FOR HEIGHT " << height << ". EXPECTED HASH: " << it->second << ", FETCHED HASH: " << h);
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return false;
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}
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}
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//---------------------------------------------------------------------------
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bool checkpoints::check_block(uint64_t height, const crypto::hash& h) const
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{
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bool ignored;
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return check_block(height, h, ignored);
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}
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//---------------------------------------------------------------------------
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//FIXME: is this the desired behavior?
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bool checkpoints::is_alternative_block_allowed(uint64_t blockchain_height, uint64_t block_height) const
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{
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if (0 == block_height)
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return false;
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auto it = m_points.upper_bound(blockchain_height);
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// Is blockchain_height before the first checkpoint?
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if (it == m_points.begin())
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return true;
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--it;
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uint64_t checkpoint_height = it->first;
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return checkpoint_height < block_height;
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}
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//---------------------------------------------------------------------------
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uint64_t checkpoints::get_max_height() const
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{
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if (m_points.empty())
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return 0;
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return m_points.rbegin()->first;
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}
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//---------------------------------------------------------------------------
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const std::map<uint64_t, crypto::hash>& checkpoints::get_points() const
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{
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return m_points;
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}
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//---------------------------------------------------------------------------
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const std::map<uint64_t, difficulty_type>& checkpoints::get_difficulty_points() const
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{
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return m_difficulty_points;
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}
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bool checkpoints::check_for_conflicts(const checkpoints& other) const
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{
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for (auto& pt : other.get_points())
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{
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if (m_points.count(pt.first))
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{
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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!");
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}
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}
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return true;
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}
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bool checkpoints::init_default_checkpoints(network_type nettype)
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{
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if (nettype == MAINNET) {
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ADD_CHECKPOINT2(1, "b6b45052e7e182ebaeb14ab713db29ad979115e664d766aa0910e325564a27a6", "0x2");
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ADD_CHECKPOINT2(10, "82724681cf6bd934eb3253d041de50206a77627ce40ffe418ce6e0fe392ec684", "0x7812a");
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ADD_CHECKPOINT2(20, "4dac7b512d876df05bfa4f39b8dbacd75cb1483fbced8bfc5446ebe21b25a04f", "0xba98f");
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ADD_CHECKPOINT2(30, "668246360c93ef791a59157cec9cd09722b32a966051feea399082433138f07b", "0xcc235");
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ADD_CHECKPOINT2(40, "9a4183bc1d6e9828eac46505c5ef37ae5447ba6c9325dca02be9e1201f939a7d", "0xdf077");
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ADD_CHECKPOINT2(50, "5cd8b089d2e77aed9b803b398c6bff07ca652100cb8fa114c91b72509aeeb7e9", "0xf37eb");
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ADD_CHECKPOINT2(60, "0e1acf00dd38e0757996dcdc4b69ad54baf7ebe10ae1e8168b192acb1a0ed7f2", "0x10993b");
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ADD_CHECKPOINT2(70, "988977507f388221a927e279307b548a0ae0de10ded8c4f22c315e1b483f921a", "0x121537");
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ADD_CHECKPOINT2(80, "88ea1c49b20e7596e21ca8137b2a9fa98558df269a15816fe7d7495f1c63ea43", "0x13a290");
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ADD_CHECKPOINT2(90, "254800bb6f9794aad95b2226ffc1a1eef0a817472e1877ae08fac6becb55b147", "0x153a55");
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ADD_CHECKPOINT2(100, "ba8d75fad878af26ac2504b4868893a7f86c59f013d0f096925cf53271dd04e8", "0x16e91e");
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ADD_CHECKPOINT2(110, "dca0779bfe403730b923fa0918645daeec6096b953be2c554f133460c6fcce35", "0x18acb9");
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ADD_CHECKPOINT2(120, "5a57287f6b5c105ae264b88050731c5b9ad1313b916143d7585af1d345e70247", "0x1a88f5");
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ADD_CHECKPOINT2(130, "4fd292ac0774461e968924f8097e78ec03eee43a2997deaddbc7993e470a61d6", "0x1c6edd");
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ADD_CHECKPOINT2(140, "5a3b6ceeef5fd498ea3330acb8a0e87f2c1566c9b0100ad67237e5664d1f053b", "0x1e4991");
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ADD_CHECKPOINT2(150, "78f26d08d39f7d5e1a3548277321471e16c95096fa9bcecbe8a420d406ee249b", "0x202406");
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ADD_CHECKPOINT2(160, "7acaab1037ccfbadd3126d2612d5dc154020297f980df0b8df462f9c761d3326", "0x22154b");
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ADD_CHECKPOINT2(170, "9541ae934e40fa6749ca3453e47cf5fdf38efbac9efcaa2714121e8a21dd2d24", "0x241ce7");
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ADD_CHECKPOINT2(180, "e20bc8ac6aabb6b0792f23a29ce42a577c6a57d177a8ac1a51b68fb6de508045", "0x262b40");
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ADD_CHECKPOINT2(190, "f69fdad7a15471b63a82668b618ee5b2a384291269d944b11974a723c1604124", "0x2856a3");
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ADD_CHECKPOINT2(200, "eba53fa7006dfcdc837a56c0bc8f0e1883cf34861c26934d680252a6878a3f5d", "0x2aa022");
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}
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return true;
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}
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bool checkpoints::load_checkpoints_from_json(const std::string &json_hashfile_fullpath)
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{
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boost::system::error_code errcode;
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if (! (boost::filesystem::exists(json_hashfile_fullpath, errcode)))
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{
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LOG_PRINT_L1("Blockchain checkpoints file not found");
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return true;
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}
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LOG_PRINT_L1("Adding checkpoints from blockchain hashfile");
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uint64_t prev_max_height = get_max_height();
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LOG_PRINT_L1("Hard-coded max checkpoint height is " << prev_max_height);
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t_hash_json hashes;
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if (!epee::serialization::load_t_from_json_file(hashes, json_hashfile_fullpath))
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{
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MERROR("Error loading checkpoints from " << json_hashfile_fullpath);
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return false;
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}
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for (std::vector<t_hashline>::const_iterator it = hashes.hashlines.begin(); it != hashes.hashlines.end(); )
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{
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uint64_t height;
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height = it->height;
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if (height <= prev_max_height) {
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LOG_PRINT_L1("ignoring checkpoint height " << height);
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} else {
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std::string blockhash = it->hash;
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LOG_PRINT_L1("Adding checkpoint height " << height << ", hash=" << blockhash);
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ADD_CHECKPOINT(height, blockhash);
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}
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++it;
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}
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return true;
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}
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bool checkpoints::load_checkpoints_from_dns(network_type nettype)
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{
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std::vector<std::string> records;
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// All four MoneroPulse domains have DNSSEC on and valid
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static const std::vector<std::string> dns_urls = { /*"checkpoints.moneropulse.se"
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, "checkpoints.moneropulse.org"
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, "checkpoints.moneropulse.net"
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, "checkpoints.moneropulse.co"*/
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};
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static const std::vector<std::string> testnet_dns_urls = { /*"testpoints.moneropulse.se"
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, "testpoints.moneropulse.org"
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, "testpoints.moneropulse.net"
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, "testpoints.moneropulse.co"*/
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};
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static const std::vector<std::string> stagenet_dns_urls = { /*"stagenetpoints.moneropulse.se"
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, "stagenetpoints.moneropulse.org"
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, "stagenetpoints.moneropulse.net"
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, "stagenetpoints.moneropulse.co"*/
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};
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if (!tools::dns_utils::load_txt_records_from_dns(records, nettype == TESTNET ? testnet_dns_urls : nettype == STAGENET ? stagenet_dns_urls : dns_urls))
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return true; // why true ?
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for (const auto& record : records)
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{
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auto pos = record.find(":");
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if (pos != std::string::npos)
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{
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uint64_t height;
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crypto::hash hash;
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// parse the first part as uint64_t,
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// if this fails move on to the next record
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std::stringstream ss(record.substr(0, pos));
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if (!(ss >> height))
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{
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continue;
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}
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// parse the second part as crypto::hash,
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// if this fails move on to the next record
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std::string hashStr = record.substr(pos + 1);
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if (!epee::string_tools::hex_to_pod(hashStr, hash))
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{
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continue;
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}
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ADD_CHECKPOINT(height, hashStr);
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}
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}
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return true;
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}
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bool checkpoints::load_new_checkpoints(const std::string &json_hashfile_fullpath, network_type nettype, bool dns)
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{
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bool result;
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result = load_checkpoints_from_json(json_hashfile_fullpath);
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if (dns)
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{
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result &= load_checkpoints_from_dns(nettype);
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}
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return result;
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}
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}
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