is_authorized_asset.cpp

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/*
 * Copyright (c) 2015 Cryptonomex, Inc., and contributors.
 *
 * The MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#include <graphene/chain/account_object.hpp>
#include <graphene/chain/asset_object.hpp>

#include <graphene/chain/database.hpp>
#include <graphene/chain/hardfork.hpp>

namespace graphene { namespace chain {

namespace detail {

bool _is_authorized_asset(
   const database& d,
   const account_object& acct,
   const asset_object& asset_obj)
{
   // committee-account is always allowed to transact after BSIP 86
   if( HARDFORK_BSIP_86_PASSED( d.head_block_time() ) )
   {
      static const object_id_type committee_account_id( GRAPHENE_COMMITTEE_ACCOUNT );
      if( acct.id == committee_account_id )
         return true;
   }

   if( acct.allowed_assets.valid() )
   {
      if( acct.allowed_assets->find( asset_obj.get_id() ) == acct.allowed_assets->end() )
         return false;
      // must still pass other checks even if it is in allowed_assets
   }

   for( const auto& id : acct.blacklisting_accounts )
   {
      if( asset_obj.options.blacklist_authorities.find(id) != asset_obj.options.blacklist_authorities.end() )
         return false;
   }

   if( asset_obj.options.whitelist_authorities.size() == 0 )
      return true;

   for( const auto& id : acct.whitelisting_accounts )
   {
      if( asset_obj.options.whitelist_authorities.find(id) != asset_obj.options.whitelist_authorities.end() )
         return true;
   }

   return false;
}

} // detail

} } // graphene::chain