working premine; empty first version of PROTOCOL_TX in block

2023-10-18 10:48:16 +01:00
parent d186cf95c1
commit 0b3633ccdc
667 changed files with 8288 additions and 5019 deletions
@@ -0,0 +1,233 @@
+// Copyright (c) 2019, Haven Protocol
+// 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.
+//
+// Portions of this code based upon code Copyright (c) 2019, The Monero Project
+
+#include "pricing_record.h"
+
+#include "serialization/keyvalue_serialization.h"
+#include "storages/portable_storage.h"
+
+#include "string_tools.h"
+namespace oracle
+{
+
+  namespace
+  {
+    struct pr_serialized
+    {
+      uint64_t pr_version;
+      uint64_t spot;
+      uint64_t moving_average;
+      uint64_t timestamp;
+      std::string signature;
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(pr_version)
+        KV_SERIALIZE(spot)
+        KV_SERIALIZE(moving_average)
+        KV_SERIALIZE(timestamp)
+        KV_SERIALIZE(signature)
+      END_KV_SERIALIZE_MAP()
+    };
+  }
+  
+  pricing_record::pricing_record() noexcept
+    : pr_version(0)
+    , spot(0)
+    , moving_average(0)
+    , timestamp(0)
+  {
+    std::memset(signature, 0, sizeof(signature));
+  }
+
+  bool pricing_record::_load(epee::serialization::portable_storage& src, epee::serialization::section* hparent)
+  {
+    pr_serialized in{};
+    if (in._load(src, hparent))
+    {
+      // Copy everything into the local instance
+      pr_version = in.pr_version;
+      spot = in.spot;
+      moving_average = in.moving_average;
+      timestamp = in.timestamp;
+      for (unsigned int i = 0; i < in.signature.length(); i += 2) {
+        std::string byteString = in.signature.substr(i, 2);
+        signature[i>>1] = (char) strtol(byteString.c_str(), NULL, 16);
+      }
+      return true;
+    }
+
+    // Report error here?
+    return false;
+  }
+
+  bool pricing_record::store(epee::serialization::portable_storage& dest, epee::serialization::section* hparent) const
+  {
+    std::string sig_hex;
+    for (unsigned int i=0; i<64; i++) {
+      std::stringstream ss;
+      ss << std::hex << std::setw(2) << std::setfill('0') << (0xff & signature[i]);
+      sig_hex += ss.str();
+    }
+    const pr_serialized out{pr_version,spot,moving_average,timestamp,sig_hex};
+    return out.store(dest, hparent);
+  }
+
+  pricing_record::pricing_record(const pricing_record& orig) noexcept
+    : pr_version(orig.pr_version)
+    , spot(orig.spot)
+    , moving_average(orig.moving_average)
+    , timestamp(orig.timestamp)
+  {
+    std::memcpy(signature, orig.signature, sizeof(signature));
+  }
+
+  pricing_record& pricing_record::operator=(const pricing_record& orig) noexcept
+  {
+    pr_version = orig.pr_version;
+    spot = orig.spot;
+    moving_average = orig.moving_average;
+    timestamp = orig.timestamp;
+    ::memcpy(signature, orig.signature, sizeof(signature));
+    return *this;
+  }
+  
+  bool pricing_record::equal(const pricing_record& other) const noexcept
+  {
+    return ((pr_version == other.pr_version) &&
+            (spot == other.spot) &&
+            (moving_average == other.moving_average) &&
+            (timestamp == other.timestamp) &&
+            (!::memcmp(signature, other.signature, sizeof(signature))));
+  }
+
+  bool pricing_record::empty() const noexcept
+  {
+    const pricing_record empty_pr = oracle::pricing_record();
+    return (*this).equal(empty_pr);
+  }
+
+  bool pricing_record::verifySignature(const std::string& public_key) const
+  {
+    CHECK_AND_ASSERT_THROW_MES(!public_key.empty(), "Pricing record verification failed. NULL public key. PK Size: " << public_key.size()); // TODO: is this necessary or the one below already covers this case, meannin it will produce empty pubkey?
+
+    // extract the key
+    EVP_PKEY* pubkey;
+    BIO* bio = BIO_new_mem_buf(public_key.c_str(), public_key.size());
+    if (!bio) {
+      return false;
+    }
+    pubkey = PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL);
+    BIO_free(bio);
+    CHECK_AND_ASSERT_THROW_MES(pubkey != NULL, "Pricing record verification failed. NULL public key.");
+
+    // Convert our internal 64-byte binary representation into 128-byte hex string
+    std::string sig_hex;
+    for (unsigned int i=0; i<64; i++) {
+      std::stringstream ss;
+      ss << std::hex << std::setw(2) << std::setfill('0') << (0xff & signature[i]);
+      sig_hex += ss.str();
+    }
+
+    // Build the JSON string, so that we can verify the signature
+    std::ostringstream oss;
+    oss << "{\"pr_version\":" << pr_version;
+    oss << ",\"spot\":" << spot;
+    oss << ",\"moving_average\":" << moving_average;
+    oss << ",\"timestamp\":" << timestamp;
+    oss << "}";
+    std::string message = oss.str();
+
+    // Create a verify digest from the message
+    EVP_MD_CTX *ctx = EVP_MD_CTX_create();
+    int ret = 0;
+    if (ctx) {
+      ret = EVP_DigestVerifyInit(ctx, NULL, EVP_sha256(), NULL, pubkey);
+      if (ret == 1) {
+        ret = EVP_DigestVerifyUpdate(ctx, message.data(), message.length());
+        if (ret == 1) {
+          ret = EVP_DigestVerifyFinal(ctx, (const unsigned char *)signature, 64);
+        }
+      }
+    }
+
+    // Cleanup the context we created
+    EVP_MD_CTX_destroy(ctx);
+    // Cleanup the openssl stuff
+    EVP_PKEY_free(pubkey);
+
+    if (ret == 1)
+      return true;
+
+    // Get the errors from OpenSSL
+    ERR_print_errors_fp (stderr);
+
+    return false;
+  }
+
+  bool pricing_record::has_missing_rates() const noexcept
+  {
+    return (spot == 0) || (moving_average == 0);
+  }
+
+  // overload for pr validation for block
+  bool pricing_record::valid(cryptonote::network_type nettype, uint32_t hf_version, uint64_t bl_timestamp, uint64_t last_bl_timestamp) const 
+  {
+    if (hf_version < HF_VERSION_SLIPPAGE_YIELD) {
+      if (!this->empty())
+        return false;
+    }
+
+    if (this->empty())
+        return true;
+
+    if (this->has_missing_rates()) {
+      LOG_ERROR("Pricing record has missing rates.");
+      return false;
+    }
+
+    if (!verifySignature(get_config(nettype).ORACLE_PUBLIC_KEY)) {
+      LOG_ERROR("Invalid pricing record signature.");
+      return false;
+    }
+
+    // validate the timestmap
+    if (this->timestamp > bl_timestamp + PRICING_RECORD_VALID_TIME_DIFF_FROM_BLOCK) {
+      LOG_ERROR("Pricing record timestamp is too far in the future.");
+      return false;
+    }
+
+    if (this->timestamp <= last_bl_timestamp) {
+      LOG_ERROR("Pricing record timestamp: " << this->timestamp << ", block timestamp: " << bl_timestamp);
+      LOG_ERROR("Pricing record timestamp is too old.");
+      return false;
+    }
+
+    return true;
+  }
+}