From b8e4511232474c1fd5bcbf7b67aad449d90eee32 Mon Sep 17 00:00:00 2001
From: sierra19XX <15652887+sierra19XX@users.noreply.github.com>
Date: Wed, 23 Jun 2021 00:53:32 +0000
Subject: [PATCH] reserve tokens

---
 libraries/chain/asset_evaluator.cpp             |  5 +++--
 libraries/chain/db_getter.cpp                   | 17 +++++++++++++++++
 .../chain/include/graphene/chain/database.hpp   |  1 +
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/libraries/chain/asset_evaluator.cpp b/libraries/chain/asset_evaluator.cpp
index 1ffcf3bc..0591da54 100644
--- a/libraries/chain/asset_evaluator.cpp
+++ b/libraries/chain/asset_evaluator.cpp
@@ -42,8 +42,7 @@ void_result asset_create_evaluator::do_evaluate( const asset_create_operation& o
 
    database& d = db();
 
-   if (d.head_block_time() < HARDFORK_SON_TIME)
-      FC_ASSERT(op.symbol != "BTC", "BTC asset creation before SON hardfork");
+   FC_ASSERT(d.is_asset_creation_allowed(op.symbol), "Asset creation not allowed at current time");
 
    const auto& chain_parameters = d.get_global_properties().parameters;
    FC_ASSERT( op.common_options.whitelist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
@@ -191,6 +190,8 @@ void_result lottery_asset_create_evaluator::do_evaluate( const lottery_asset_cre
 
    database& d = db();
 
+   FC_ASSERT(d.is_asset_creation_allowed(op.symbol), "Lottery asset creation not allowed at current time");
+
    const auto& chain_parameters = d.get_global_properties().parameters;
    FC_ASSERT( op.common_options.whitelist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
    FC_ASSERT( op.common_options.blacklist_authorities.size() <= chain_parameters.maximum_asset_whitelist_authorities );
diff --git a/libraries/chain/db_getter.cpp b/libraries/chain/db_getter.cpp
index cb7e1bc0..ba2fed98 100644
--- a/libraries/chain/db_getter.cpp
+++ b/libraries/chain/db_getter.cpp
@@ -315,6 +315,23 @@ bool database::is_son_active( son_id_type son_id )
    return (it_son != active_son_ids.end());
 }
 
+bool database::is_asset_creation_allowed(const string &symbol)
+{
+   time_point_sec now = head_block_time();
+   if (symbol == "BTC")
+   {
+      if (now < HARDFORK_SON_TIME)
+         return false;
+   }
+
+   if (symbol == "ETH" || symbol == "EOS" || symbol == "BNB" || symbol == "ADA" || symbol == "FIL" || symbol == "DOT")
+   {
+      if (now >= HARDFORK_SON_TIME)
+         return false;
+   }
+   return true;
+}
+
 vector<uint64_t> database::get_random_numbers(uint64_t minimum, uint64_t maximum, uint64_t selections, bool duplicates)
 {
    FC_ASSERT( selections <= 100000 );
diff --git a/libraries/chain/include/graphene/chain/database.hpp b/libraries/chain/include/graphene/chain/database.hpp
index 9e154347..50975174 100644
--- a/libraries/chain/include/graphene/chain/database.hpp
+++ b/libraries/chain/include/graphene/chain/database.hpp
@@ -312,6 +312,7 @@ namespace graphene { namespace chain {
          signed_transaction                     create_signed_transaction( const fc::ecc::private_key& signing_private_key, const operation& op );
          bool                                   is_son_dereg_valid( son_id_type son_id );
          bool                                   is_son_active( son_id_type son_id );
+         bool                                   is_asset_creation_allowed(const string& symbol);
 
          time_point_sec   head_block_time()const;
          uint32_t         head_block_num()const;