4rkal/monero
1
0
Fork 0
mirror of https://github.com/monero-project/monero.git synced 2024-12-13 11:56:31 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

blockchain: fix bitflipping test with quantized block rewards

Browse Source 
Block reward may now be less than the full amount allowed.
This was breaking the bitflipping test.
We now keep track of whether a block which was accepted by the core
has a lower than allowed block reward, and allow this in the test.
This commit is contained in:
moneromooo-monero 2015-12-25 22:07:58 +00:00
parent 22ddf09bea
commit 81cb0fcdcc
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
4 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/cryptonote_core/blockchain.cpp
View File

@ -941,13 +941,14 @@ bool Blockchain::prevalidate_miner_transaction(const block& b, uint64_t height)
}
//------------------------------------------------------------------
// This function validates the miner transaction reward
bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_block_size, uint64_t fee, uint64_t& base_reward, uint64_t already_generated_coins)
bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_block_size, uint64_t fee, uint64_t& base_reward, uint64_t already_generated_coins, bool &partial_block_reward)
{
LOG_PRINT_L3("Blockchain::" << __func__);
//validate reward
uint64_t money_in_use = 0;
BOOST_FOREACH(auto& o, b.miner_tx.vout)
money_in_use += o.amount;
partial_block_reward = false;
std::vector<size_t> last_blocks_sizes;
get_last_n_blocks_sizes(last_blocks_sizes, CRYPTONOTE_REWARD_BLOCKS_WINDOW);
@ -977,6 +978,8 @@ bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_bl
// emission. This modifies the emission curve very slightly.
CHECK_AND_ASSERT_MES(money_in_use - fee <= base_reward, false, "base reward calculation bug");
base_reward = money_in_use - fee;
if(base_reward + fee != money_in_use)
partial_block_reward = true;
}
return true;
}

2
src/cryptonote_core/blockchain.h
View File

@ -253,7 +253,7 @@ namespace cryptonote
bool handle_alternative_block(const block& b, const crypto::hash& id, block_verification_context& bvc);
difficulty_type get_next_difficulty_for_alternative_chain(const std::list<blocks_ext_by_hash::iterator>& alt_chain, block_extended_info& bei) const;
bool prevalidate_miner_transaction(const block& b, uint64_t height);
bool validate_miner_transaction(const block& b, size_t cumulative_block_size, uint64_t fee, uint64_t& base_reward, uint64_t already_generated_coins);
bool validate_miner_transaction(const block& b, size_t cumulative_block_size, uint64_t fee, uint64_t& base_reward, uint64_t already_generated_coins, bool &partial_block_reward);
bool validate_transaction(const block& b, uint64_t height, const transaction& tx);
bool rollback_blockchain_switching(std::list<block>& original_chain, uint64_t rollback_height);
bool add_transaction_from_block(const transaction& tx, const crypto::hash& tx_id, const crypto::hash& bl_id, uint64_t bl_height);

1
src/cryptonote_core/verification_context.h
View File

@ -48,5 +48,6 @@ namespace cryptonote
bool m_verifivation_failed; //bad block, should drop connection
bool m_marked_as_orphaned;
bool m_already_exists;
bool m_partial_block_reward;
};
}

3
tests/core_tests/block_validation.cpp
View File

@ -618,7 +618,8 @@ bool gen_block_invalid_binary_format::check_block_verification_context(const cry
}
else
{
return !bvc.m_added_to_main_chain && (bvc.m_already_exists || bvc.m_marked_as_orphaned || bvc.m_verifivation_failed);
return (!bvc.m_added_to_main_chain && (bvc.m_already_exists || bvc.m_marked_as_orphaned || bvc.m_verifivation_failed))
|| (bvc.m_added_to_main_chain && bvc.m_partial_block_reward);
}
}