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Diffstat (limited to 'src/cryptonote_core/checkpoints_create.cpp')
| -rw-r--r-- | src/cryptonote_core/checkpoints_create.cpp | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/cryptonote_core/checkpoints_create.cpp b/src/cryptonote_core/checkpoints_create.cpp new file mode 100644 index 000000000..808bc46a7 --- /dev/null +++ b/src/cryptonote_core/checkpoints_create.cpp @@ -0,0 +1,193 @@ +// Copyright (c) 2014, 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 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"); + + 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_L0("Blockchain checkpoints file not found"); + return true; + } + + LOG_PRINT_L0("Adding checkpoints from blockchain hashfile"); + + uint64_t prev_max_height = checkpoints.get_max_height(); + LOG_PRINT_L0("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_L0("ignoring checkpoint height " << height); + } else { + std::string blockhash = it->hash; + LOG_PRINT_L0("Adding checkpoint height " << height << ", hash=" << blockhash); + ADD_CHECKPOINT(height, blockhash); + } + ++it; + } + + return true; +} + +bool load_checkpoints_from_dns(cryptonote::checkpoints& checkpoints) +{ + static const std::vector<std::string> dns_urls = { "checkpoints.moneropulse.se" + , "checkpoints.moneropulse.org" + , "checkpoints.moneropulse.net" + , "checkpoints.moneropulse.co" + }; + bool avail, valid; + std::vector<std::string> records; + + std::random_device rd; + std::mt19937 gen(rd()); + std::uniform_int_distribution<int> dis(0, dns_urls.size() - 1); + int first_index = dis(gen); + + int cur_index = first_index; + do + { + records = tools::DNSResolver::instance().get_txt_record(dns_urls[cur_index], avail, valid); + if (records.size() == 0 || (avail && !valid)) + { + cur_index++; + if (cur_index == dns_urls.size()) + { + cur_index = 0; + } + continue; + } + break; + } while (cur_index != first_index); + + if (records.size() == 0) + { + LOG_PRINT_L1("Fetching checkpoints from DNS TXT records failed, no TXT records available."); + return true; + } + + if (avail && !valid) + { + LOG_PRINT_L0("DNSSEC present and failed validation for query last url, and all other urls either failed validation or returned no records"); + return true; + } + + for (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 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 |