d1c3c7a698
1. Implement a TaPoS assert operation predicate that offers full block ID validation for transactions that want the added security. This is only required for transactions that are of high value and transfer control of funds to a newly created identifier and where the witnesses cannot be trusted. 2. Remove the full block ID from the transaction digest generation.
72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
/*
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* Copyright (c) 2015, Cryptonomex, Inc.
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* All rights reserved.
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*
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* This source code is provided for evaluation in private test networks only, until September 8, 2015. After this date, this license expires and
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* the code may not be used, modified or distributed for any purpose. Redistribution and use in source and binary forms, with or without modification,
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* are permitted until September 8, 2015, provided that the following conditions are met:
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*
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* 1. The code and/or derivative works are used only for private test networks consisting of no more than 10 P2P nodes.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <graphene/chain/assert_evaluator.hpp>
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#include <graphene/chain/block_summary_object.hpp>
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#include <graphene/chain/database.hpp>
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#include <sstream>
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namespace graphene { namespace chain {
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struct predicate_evaluator
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{
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typedef void result_type;
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const database& db;
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predicate_evaluator( const database& d ):db(d){}
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void operator()( const account_name_eq_lit_predicate& p )const
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{
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FC_ASSERT( p.account_id(db).name == p.name );
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}
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void operator()( const asset_symbol_eq_lit_predicate& p )const
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{
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FC_ASSERT( p.asset_id(db).symbol == p.symbol );
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}
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void operator()( const block_id_predicate& p )const
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{
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FC_ASSERT( block_summary_id_type( block_header::num_from_id( p.id ) )(db).block_id == p.id );
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}
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};
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void_result assert_evaluator::do_evaluate( const assert_operation& o )
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{ try {
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const database& _db = db();
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uint32_t skip = _db.get_node_properties().skip_flags;
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auto max_predicate_opcode = _db.get_global_properties().parameters.max_predicate_opcode;
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if( skip & database::skip_assert_evaluation )
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return void_result();
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for( const auto& p : o.predicates )
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{
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FC_ASSERT( p.which() >= 0 );
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FC_ASSERT( unsigned(p.which()) < max_predicate_opcode );
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p.visit( predicate_evaluator( _db ) );
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}
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return void_result();
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} FC_CAPTURE_AND_RETHROW( (o) ) }
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void_result assert_evaluator::do_apply( const assert_operation& o )
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{ try {
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// assert_operation is always a no-op
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return void_result();
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} FC_CAPTURE_AND_RETHROW( (o) ) }
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} } // graphene::chain
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