bitshares · jmjatlanta · Mar 29, 2019 · Aug 31, 2018 · Aug 31, 2018 · Aug 31, 2018
diff --git a/README.md b/README.md
@@ -55,9 +55,11 @@ We recommend building on Ubuntu 16.04 LTS (64-bit)
     git submodule sync --recursive
     git submodule update --init --recursive
 
-**NOTE:** BitShares requires a [Boost](http://www.boost.org/) version in the range [1.57 - 1.65.1]. Versions earlier than
-1.57 or newer than 1.65.1 are NOT supported. If your system's Boost version is newer, then you will need to manually build
-an older version of Boost and specify it to CMake using `DBOOST_ROOT`.
+**NOTE:** Versions of [Boost](http://www.boost.org/) 1.57 through 1.69 are supported. Newer versions may work, but
+have not been tested. If your system came pre-installed with a version of Boost that you do not wish to use, you may
+manually build your preferred version and use it with BitShares by specifying it on the CMake command line.
+
+Example: ``cmake -DBOOST_ROOT=/path/to/boost .``
 
 **NOTE:** BitShares requires a 64-bit operating system to build, and will not build on a 32-bit OS.
 

diff --git a/docs b/docs
diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
@@ -25,6 +25,7 @@
 #include <graphene/app/database_api.hpp>
 #include <graphene/app/util.hpp>
 #include <graphene/chain/get_config.hpp>
+#include <graphene/chain/hardfork.hpp>
 
 #include <fc/bloom_filter.hpp>
 
@@ -1291,14 +1292,13 @@ vector<call_order_object> database_api_impl::get_call_orders(const std::string&
 {
    FC_ASSERT( limit <= 300 );
 
-   const asset_id_type asset_a_id = get_asset_from_string(a)->id;
-   const auto& call_index = _db.get_index_type<call_order_index>().indices().get<by_price>();
-   const asset_object& mia = _db.get(asset_a_id);
-   price index_price = price::min(mia.bitasset_data(_db).options.short_backing_asset, mia.get_id());
+   const asset_object* mia = get_asset_from_string(a);
+   const auto& call_index = _db.get_index_type<call_order_index>().indices().get<by_collateral>();
+   price index_price = price::min( mia->bitasset_data(_db).options.short_backing_asset, mia->get_id() );
 
    vector< call_order_object> result;
-   auto itr_min = call_index.lower_bound(index_price.min());
-   auto itr_max = call_index.lower_bound(index_price.max());
+   auto itr_min = call_index.lower_bound(index_price);
+   auto itr_max = call_index.upper_bound(index_price.max());
    while( itr_min != itr_max && result.size() < limit ) 
    {
       result.emplace_back(*itr_min);
@@ -2058,10 +2058,12 @@ set<public_key_type> database_api::get_required_signatures( const signed_transac
 
 set<public_key_type> database_api_impl::get_required_signatures( const signed_transaction& trx, const flat_set<public_key_type>& available_keys )const
 {
+   bool allow_non_immediate_owner = ( _db.head_block_time() >= HARDFORK_CORE_584_TIME );
    auto result = trx.get_required_signatures( _db.get_chain_id(),
                                        available_keys,
                                        [&]( account_id_type id ){ return &id(_db).active; },
                                        [&]( account_id_type id ){ return &id(_db).owner; },
+                                       allow_non_immediate_owner,
                                        _db.get_global_properties().parameters.max_authority_depth );
    return result;
 }
@@ -2077,6 +2079,7 @@ set<address> database_api::get_potential_address_signatures( const signed_transa
 
 set<public_key_type> database_api_impl::get_potential_signatures( const signed_transaction& trx )const
 {
+   bool allow_non_immediate_owner = ( _db.head_block_time() >= HARDFORK_CORE_584_TIME );
    set<public_key_type> result;
    trx.get_required_signatures(
       _db.get_chain_id(),
@@ -2095,6 +2098,7 @@ set<public_key_type> database_api_impl::get_potential_signatures( const signed_t
             result.insert(k);
          return &auth;
       },
+      allow_non_immediate_owner,
       _db.get_global_properties().parameters.max_authority_depth
    );
 
@@ -2142,10 +2146,12 @@ bool database_api::verify_authority( const signed_transaction& trx )const
 
 bool database_api_impl::verify_authority( const signed_transaction& trx )const
 {
+   bool allow_non_immediate_owner = ( _db.head_block_time() >= HARDFORK_CORE_584_TIME );
    trx.verify_authority( _db.get_chain_id(),
                          [this]( account_id_type id ){ return &id(_db).active; },
                          [this]( account_id_type id ){ return &id(_db).owner; },
-                          _db.get_global_properties().parameters.max_authority_depth );
+                         allow_non_immediate_owner,
+                         _db.get_global_properties().parameters.max_authority_depth );
    return true;
 }
 
@@ -2167,7 +2173,8 @@ bool database_api_impl::verify_account_authority( const string& account_name_or_
    {
       graphene::chain::verify_authority(ops, keys,
             [this]( account_id_type id ){ return &id(_db).active; },
-            [this]( account_id_type id ){ return &id(_db).owner; } );
+            [this]( account_id_type id ){ return &id(_db).owner; },
+            true );
    } 
    catch (fc::exception& ex)
    {

diff --git a/libraries/chain/CMakeLists.txt b/libraries/chain/CMakeLists.txt
@@ -59,7 +59,7 @@ add_library( graphene_chain
              protocol/fee_schedule.cpp
              protocol/confidential.cpp
              protocol/vote.cpp
-
+             protocol/htlc.cpp
              genesis_state.cpp
              get_config.cpp
 
@@ -78,6 +78,7 @@ add_library( graphene_chain
              vesting_balance_evaluator.cpp
              withdraw_permission_evaluator.cpp
              worker_evaluator.cpp
+             htlc_evaluator.cpp
              confidential_evaluator.cpp
              special_authority.cpp
              buyback.cpp

diff --git a/libraries/chain/asset_evaluator.cpp b/libraries/chain/asset_evaluator.cpp
@@ -35,6 +35,20 @@
 #include <locale>
 
 namespace graphene { namespace chain {
+namespace detail {
+   // TODO review and remove code below and links to it after hf_1268
+   void check_asset_options_hf_1268(const fc::time_point_sec& block_time, const asset_options& options)
+   {
+      if( block_time < HARDFORK_1268_TIME )
+      {
+         FC_ASSERT( !options.extensions.value.reward_percent.valid(),
+            "Asset extension reward percent is only available after HARDFORK_1268_TIME!");
+
+         FC_ASSERT( !options.extensions.value.whitelist_market_fee_sharing.valid(),
+            "Asset extension whitelist_market_fee_sharing is only available after HARDFORK_1268_TIME!");
+      }
+   }
+}
 
 void_result asset_create_evaluator::do_evaluate( const asset_create_operation& op )
 { try {
@@ -45,6 +59,8 @@ void_result asset_create_evaluator::do_evaluate( const asset_create_operation& o
    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 );
 
+   detail::check_asset_options_hf_1268(d.head_block_time(), op.common_options);
+
    // Check that all authorities do exist
    for( auto id : op.common_options.whitelist_authorities )
       d.get_object(id);
@@ -277,6 +293,8 @@ void_result asset_update_evaluator::do_evaluate(const asset_update_operation& o)
       validate_new_issuer( d, a, *o.new_issuer );
    }
 
+   detail::check_asset_options_hf_1268(d.head_block_time(), o.new_options);
+
    if( (d.head_block_time() < HARDFORK_572_TIME) || (a.dynamic_asset_data_id(d).current_supply != 0) )
    {
       // new issuer_permissions must be subset of old issuer permissions
@@ -638,7 +656,7 @@ static bool update_bitasset_object_options(
       const asset_update_bitasset_operation& op, database& db,
       asset_bitasset_data_object& bdo, const asset_object& asset_to_update )
 {
-   const fc::time_point_sec& next_maint_time = db.get_dynamic_global_properties().next_maintenance_time;
+   const fc::time_point_sec next_maint_time = db.get_dynamic_global_properties().next_maintenance_time;
    bool after_hf_core_868_890 = ( next_maint_time > HARDFORK_CORE_868_890_TIME );
 
    // If the minimum number of feeds to calculate a median has changed, we need to recalculate the median
@@ -689,7 +707,7 @@ static bool update_bitasset_object_options(
    if( should_update_feeds )
    {
       const auto old_feed = bdo.current_feed;
-      bdo.update_median_feeds( db.head_block_time() );
+      bdo.update_median_feeds( db.head_block_time(), next_maint_time );
 
       // TODO review and refactor / cleanup after hard fork:
       //      1. if hf_core_868_890 and core-935 occurred at same time
@@ -766,8 +784,9 @@ void_result asset_update_feed_producers_evaluator::do_apply(const asset_update_f
 { try {
    database& d = db();
    const auto head_time = d.head_block_time();
+   const auto next_maint_time = d.get_dynamic_global_properties().next_maintenance_time;
    const asset_bitasset_data_object& bitasset_to_update = asset_to_update->bitasset_data(d);
-   d.modify( bitasset_to_update, [&o,head_time](asset_bitasset_data_object& a) {
+   d.modify( bitasset_to_update, [&o,head_time,next_maint_time](asset_bitasset_data_object& a) {
       //This is tricky because I have a set of publishers coming in, but a map of publisher to feed is stored.
       //I need to update the map such that the keys match the new publishers, but not munge the old price feeds from
       //publishers who are being kept.
@@ -791,7 +810,7 @@ void_result asset_update_feed_producers_evaluator::do_apply(const asset_update_f
       {
          a.feeds[acc];
       }
-      a.update_median_feeds( head_time );
+      a.update_median_feeds( head_time, next_maint_time );
    });
    // Process margin calls, allow black swan, not for a new limit order
    d.check_call_orders( *asset_to_update, true, false, &bitasset_to_update );
@@ -969,27 +988,48 @@ void_result asset_publish_feeds_evaluator::do_apply(const asset_publish_feed_ope
 { try {
 
    database& d = db();
+   const auto head_time = d.head_block_time();
+   const auto next_maint_time = d.get_dynamic_global_properties().next_maintenance_time;
 
    const asset_object& base = *asset_ptr;
    const asset_bitasset_data_object& bad = *bitasset_ptr;
 
    auto old_feed =  bad.current_feed;
    // Store medians for this asset
-   d.modify(bad , [&o,&d](asset_bitasset_data_object& a) {
-      a.feeds[o.publisher] = make_pair(d.head_block_time(), o.feed);
-      a.update_median_feeds(d.head_block_time());
+   d.modify( bad , [&o,head_time,next_maint_time](asset_bitasset_data_object& a) {
+      a.feeds[o.publisher] = make_pair( head_time, o.feed );
+      a.update_median_feeds( head_time, next_maint_time );
    });
 
    if( !(old_feed == bad.current_feed) )
    {
-      if( bad.has_settlement() ) // implies head_block_time > HARDFORK_CORE_216_TIME
+      // Check whether need to revive the asset and proceed if need
+      if( bad.has_settlement() // has globally settled, implies head_block_time > HARDFORK_CORE_216_TIME
+          && !bad.current_feed.settlement_price.is_null() ) // has a valid feed
       {
+         bool should_revive = false;
          const auto& mia_dyn = base.dynamic_asset_data_id(d);
-         if( !bad.current_feed.settlement_price.is_null()
-             && ( mia_dyn.current_supply == 0
-                  || ~price::call_price(asset(mia_dyn.current_supply, o.asset_id),
-                                        asset(bad.settlement_fund, bad.options.short_backing_asset),
-                                        bad.current_feed.maintenance_collateral_ratio ) < bad.current_feed.settlement_price ) )
+         if( mia_dyn.current_supply == 0 ) // if current supply is zero, revive the asset
+            should_revive = true;
+         else // if current supply is not zero, when collateral ratio of settlement fund is greater than MCR, revive the asset
+         {
+            if( next_maint_time <= HARDFORK_CORE_1270_TIME )
+            {
+               // before core-1270 hard fork, calculate call_price and compare to median feed
+               if( ~price::call_price( asset(mia_dyn.current_supply, o.asset_id),
+                                       asset(bad.settlement_fund, bad.options.short_backing_asset),
+                                       bad.current_feed.maintenance_collateral_ratio ) < bad.current_feed.settlement_price )
+                  should_revive = true;
+            }
+            else
+            {
+               // after core-1270 hard fork, calculate collateralization and compare to maintenance_collateralization
+               if( price( asset( bad.settlement_fund, bad.options.short_backing_asset ),
+                          asset( mia_dyn.current_supply, o.asset_id ) ) > bad.current_maintenance_collateralization )
+                  should_revive = true;
+            }
+         }
+         if( should_revive )
             d.revive_bitasset(base);
       }
       // Process margin calls, allow black swan, not for a new limit order

diff --git a/libraries/chain/asset_object.cpp b/libraries/chain/asset_object.cpp
@@ -23,6 +23,7 @@
  */
 #include <graphene/chain/asset_object.hpp>
 #include <graphene/chain/database.hpp>
+#include <graphene/chain/hardfork.hpp>
 
 #include <fc/uint128.hpp>
 
@@ -43,16 +44,10 @@ share_type asset_bitasset_data_object::max_force_settlement_volume(share_type cu
    return volume.to_uint64();
 }
 
-/******
- * @brief calculate the median feed
- *
- * This calculates the median feed. It sets the current_feed_publication_time
- * and current_feed member variables
- *
- * @param current_time the time to use in the calculations
- */
-void graphene::chain::asset_bitasset_data_object::update_median_feeds(time_point_sec current_time)
+void graphene::chain::asset_bitasset_data_object::update_median_feeds( time_point_sec current_time,
+                                                                       time_point_sec next_maintenance_time )
 {
+   bool after_core_hardfork_1270 = ( next_maintenance_time > HARDFORK_CORE_1270_TIME ); // call price caching issue
    current_feed_publication_time = current_time;
    vector<std::reference_wrapper<const price_feed>> current_feeds;
    // find feeds that were alive at current_time
@@ -73,13 +68,18 @@ void graphene::chain::asset_bitasset_data_object::update_median_feeds(time_point
       feed_cer_updated = false; // new median cer is null, won't update asset_object anyway, set to false for better performance
       current_feed_publication_time = current_time;
       current_feed = price_feed();
+      if( after_core_hardfork_1270 )
+         current_maintenance_collateralization = price();
       return;
    }
    if( current_feeds.size() == 1 )
    {
       if( current_feed.core_exchange_rate != current_feeds.front().get().core_exchange_rate )
          feed_cer_updated = true;
-      current_feed = std::move(current_feeds.front());
+      current_feed = current_feeds.front();
+      // Note: perhaps can defer updating current_maintenance_collateralization for better performance
+      if( after_core_hardfork_1270 )
+         current_maintenance_collateralization = current_feed.maintenance_collateralization();
       return;
    }
 
@@ -100,6 +100,9 @@ void graphene::chain::asset_bitasset_data_object::update_median_feeds(time_point
    if( current_feed.core_exchange_rate != median_feed.core_exchange_rate )
       feed_cer_updated = true;
    current_feed = median_feed;
+   // Note: perhaps can defer updating current_maintenance_collateralization for better performance
+   if( after_core_hardfork_1270 )
+      current_maintenance_collateralization = current_feed.maintenance_collateralization();
 }
 
 
@@ -157,7 +160,7 @@ asset asset_object::amount_from_string(string amount_string) const
       satoshis *= -1;
 
    return amount(satoshis);
-   } FC_CAPTURE_AND_RETHROW( (amount_string) ) }
+} FC_CAPTURE_AND_RETHROW( (amount_string) ) }
 
 string asset_object::amount_to_string(share_type amount) const
 {

diff --git a/libraries/chain/committee_member_evaluator.cpp b/libraries/chain/committee_member_evaluator.cpp
@@ -24,6 +24,7 @@
 #include <graphene/chain/committee_member_evaluator.hpp>
 #include <graphene/chain/committee_member_object.hpp>
 #include <graphene/chain/database.hpp>
+#include <graphene/chain/hardfork.hpp>
 #include <graphene/chain/account_object.hpp>
 #include <graphene/chain/protocol/fee_schedule.hpp>
 #include <graphene/chain/protocol/vote.hpp>
@@ -75,6 +76,9 @@ void_result committee_member_update_global_parameters_evaluator::do_evaluate(con
 { try {
    FC_ASSERT(trx_state->_is_proposed_trx);
 
+   FC_ASSERT( db().head_block_time() > HARDFORK_CORE_1468_TIME || !o.new_parameters.extensions.value.updatable_htlc_options.valid(), 
+         "Unable to set HTLC parameters until hardfork." );
+
    return void_result();
 } FC_CAPTURE_AND_RETHROW( (o) ) }