Merge pull request #1077 from GolosChain/1074-fix-delegators-overflow

Fix delegator's interest overflow #1074

Author: afalaleev

libraries/chain/database.cpp

@@ -2290,8 +2290,11 @@ namespace golos { namespace chain {
             uint64_t delegators_reward = 0;
             const auto& vdo_idx = get_index<vesting_delegation_index>().indices().get<by_received>();
             for (auto& dvir : cvo.delegator_vote_interest_rates) {
+                if (dvir.interest_rate > STEEMIT_100_PERCENT) {
+                    wlog("Skip bad delegator's interest rate: ${r}", ("r", dvir.interest_rate));
+                    continue;
+                }
                 auto delegator_claim = claim * dvir.interest_rate / STEEMIT_100_PERCENT;
-
                 if (delegator_claim == 0) {
                     continue;
                 }

libraries/chain/steem_evaluator.cpp

@@ -1528,8 +1528,13 @@ namespace golos { namespace chain {
                         for (; vdo_itr != vdo_idx.end() && vdo_itr->delegatee == voter.name; ++vdo_itr) {
                             delegator_vote_interest_rate dvir;
                             dvir.account = vdo_itr->delegator;
-                            dvir.interest_rate = vdo_itr->vesting_shares.amount.value * vdo_itr->interest_rate
-                                                 / voter.effective_vesting_shares().amount.value;
+                            if (_db.head_block_num() < GOLOS_BUG1074_BLOCK && !_db.has_hardfork(STEEMIT_HARDFORK_0_20__1074)) {
+                                dvir.interest_rate = vdo_itr->vesting_shares.amount.value * vdo_itr->interest_rate /
+                                    voter.effective_vesting_shares().amount.value;
+                            } else {
+                                dvir.interest_rate = (uint128_t(vdo_itr->vesting_shares.amount.value) *
+                                    vdo_itr->interest_rate / voter.effective_vesting_shares().amount.value).to_uint64();
+                            }
                             dvir.payout_strategy = vdo_itr->payout_strategy;
                             if (dvir.interest_rate > 0) {
                                 delegator_vote_interest_rates.emplace_back(std::move(dvir));

libraries/protocol/include/golos/protocol/config.hpp

@@ -3,9 +3,13 @@
  */
 #pragma once
 
+
 #define STEEMIT_BLOCKCHAIN_VERSION              (version(0, 20, 0))
 #define STEEMIT_BLOCKCHAIN_HARDFORK_VERSION     (hardfork_version(STEEMIT_BLOCKCHAIN_VERSION))
 
+
+#define GOLOS_BUG1074_BLOCK 23569125
+
 #ifdef STEEMIT_BUILD_TESTNET
 #define BLOCKCHAIN_NAME "GOLOSTEST"
 

libraries/protocol/steem_operations.cpp

@@ -276,7 +276,7 @@ namespace golos { namespace protocol {
 
         void chain_properties_19::validate() const {
             chain_properties_18::validate();
-            GOLOS_CHECK_VALUE_LE(auction_window_size, STEEMIT_MAX_AUCTION_WINDOW_SIZE_SECONDS);
+            // GOLOS_CHECK_VALUE_LE(auction_window_size, STEEMIT_MAX_AUCTION_WINDOW_SIZE_SECONDS); // auction_window_size is limited by 16bit
             GOLOS_CHECK_VALUE_LE(max_referral_interest_rate, GOLOS_MAX_REFERRAL_INTEREST_RATE);
             GOLOS_CHECK_VALUE_LE(max_referral_term_sec, GOLOS_MAX_REFERRAL_TERM_SEC);
 

libraries/wallet/wallet.cpp

@@ -2204,12 +2204,8 @@ fc::ecc::private_key wallet_api::derive_private_key(const std::string& prefix_st
         ) {
             WALLET_CHECK_UNLOCKED();
 
-            const auto hf = my->_remote_database_api->get_hardfork_version();
-            const auto has_hf18 = hf >= hardfork_version(0, STEEMIT_HARDFORK_0_18__673);
-
             signed_transaction tx;
             witness_update_operation op;
-
             if (url.empty()) {
                 auto wit = my->_remote_witness_api->get_witness_by_account(witness_account_name);
                 if (wit.valid()) {