forked from lthn/blockchain
94 lines
No EOL
2.7 KiB
C++
94 lines
No EOL
2.7 KiB
C++
// Copyright (c) 2018-2019 Zano Project
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "tx_semantic_validation.h"
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#include "currency_format_utils.h"
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namespace currency
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{
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//-----------------------------------------------------------------------------------------------
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bool check_tx_extra(const transaction& tx)
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{
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tx_extra_info ei = AUTO_VAL_INIT(ei);
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bool r = parse_and_validate_tx_extra(tx, ei);
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if (!r)
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return false;
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return true;
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}
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//-----------------------------------------------------------------------------------------------
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bool check_tx_inputs_keyimages_diff(const transaction& tx)
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{
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std::unordered_set<crypto::key_image> ki;
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BOOST_FOREACH(const auto& in, tx.vin)
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{
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if (in.type() == typeid(txin_to_key))
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{
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CHECKED_GET_SPECIFIC_VARIANT(in, const txin_to_key, tokey_in, false);
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if (!ki.insert(tokey_in.k_image).second)
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return false;
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}
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}
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return true;
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}
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//-----------------------------------------------------------------------------------------------
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bool validate_tx_semantic(const transaction& tx, size_t tx_block_size)
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{
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if (!tx.vin.size())
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{
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LOG_PRINT_RED_L0("tx with empty inputs, rejected for tx id= " << get_transaction_hash(tx));
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return false;
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}
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if (!check_inputs_types_supported(tx))
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{
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LOG_PRINT_RED_L0("unsupported input types for tx id= " << get_transaction_hash(tx));
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return false;
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}
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if (!check_outs_valid(tx))
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{
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LOG_PRINT_RED_L0("tx with invalid outputs, rejected for tx id= " << get_transaction_hash(tx));
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return false;
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}
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if (!check_money_overflow(tx))
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{
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LOG_PRINT_RED_L0("tx has money overflow, rejected for tx id= " << get_transaction_hash(tx));
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return false;
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}
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uint64_t amount_in = 0;
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get_inputs_money_amount(tx, amount_in);
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uint64_t amount_out = get_outs_money_amount(tx);
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if (amount_in < amount_out)
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{
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LOG_PRINT_RED_L0("tx with wrong amounts: ins " << amount_in << ", outs " << amount_out << ", rejected for tx id= " << get_transaction_hash(tx));
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return false;
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}
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if (tx_block_size >= CURRENCY_MAX_TRANSACTION_BLOB_SIZE)
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{
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LOG_PRINT_RED_L0("tx has too big size " << tx_block_size << ", expected no bigger than " << CURRENCY_BLOCK_GRANTED_FULL_REWARD_ZONE);
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return false;
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}
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//check if tx use different key images
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if (!check_tx_inputs_keyimages_diff(tx))
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{
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LOG_PRINT_RED_L0("tx inputs have the same key images");
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return false;
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}
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if (!check_tx_extra(tx))
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{
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LOG_PRINT_RED_L0("tx has wrong extra, rejected");
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return false;
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}
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return true;
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}
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} |