diff options
| -rw-r--r-- | src/cryptonote_config.h | 1 | ||||
| -rw-r--r-- | src/cryptonote_core/blockchain.cpp | 31 |
2 files changed, 24 insertions, 8 deletions
diff --git a/src/cryptonote_config.h b/src/cryptonote_config.h index c1078a70b..834bd5f22 100644 --- a/src/cryptonote_config.h +++ b/src/cryptonote_config.h @@ -151,6 +151,7 @@ #define HF_VERSION_LONG_TERM_BLOCK_WEIGHT 10 #define HF_VERSION_MIN_2_OUTPUTS 12 #define HF_VERSION_MIN_V2_COINBASE_TX 12 +#define HF_VERSION_SAME_MIXIN 12 #define PER_KB_FEE_QUANTIZATION_DECIMALS 8 diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp index 28a052e47..3c5c928f6 100644 --- a/src/cryptonote_core/blockchain.cpp +++ b/src/cryptonote_core/blockchain.cpp @@ -2860,7 +2860,8 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc, if (hf_version >= 2) { size_t n_unmixable = 0, n_mixable = 0; - size_t mixin = std::numeric_limits<size_t>::max(); + size_t min_actual_mixin = std::numeric_limits<size_t>::max(); + size_t max_actual_mixin = 0; const size_t min_mixin = hf_version >= HF_VERSION_MIN_MIXIN_10 ? 10 : hf_version >= HF_VERSION_MIN_MIXIN_6 ? 6 : hf_version >= HF_VERSION_MIN_MIXIN_4 ? 4 : 2; for (const auto& txin : tx.vin) { @@ -2885,29 +2886,43 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc, else ++n_mixable; } - if (in_to_key.key_offsets.size() - 1 < mixin) - mixin = in_to_key.key_offsets.size() - 1; + size_t ring_mixin = in_to_key.key_offsets.size() - 1; + if (ring_mixin < min_actual_mixin) + min_actual_mixin = ring_mixin; + if (ring_mixin > max_actual_mixin) + max_actual_mixin = ring_mixin; } } + MDEBUG("Mixin: " << min_actual_mixin << "-" << max_actual_mixin); - if (((hf_version == HF_VERSION_MIN_MIXIN_10 || hf_version == HF_VERSION_MIN_MIXIN_10+1) && mixin != 10) || (hf_version >= HF_VERSION_MIN_MIXIN_10+2 && mixin > 10)) + if (hf_version >= HF_VERSION_SAME_MIXIN) { - MERROR_VER("Tx " << get_transaction_hash(tx) << " has invalid ring size (" << (mixin + 1) << "), it should be 11"); + if (min_actual_mixin != max_actual_mixin) + { + MERROR_VER("Tx " << get_transaction_hash(tx) << " has varying ring size (" << (min_actual_mixin + 1) << "-" << (max_actual_mixin + 1) << "), it should be constant"); + tvc.m_low_mixin = true; + return false; + } + } + + if (((hf_version == HF_VERSION_MIN_MIXIN_10 || hf_version == HF_VERSION_MIN_MIXIN_10+1) && min_actual_mixin != 10) || (hf_version >= HF_VERSION_MIN_MIXIN_10+2 && min_actual_mixin > 10)) + { + MERROR_VER("Tx " << get_transaction_hash(tx) << " has invalid ring size (" << (min_actual_mixin + 1) << "), it should be 11"); tvc.m_low_mixin = true; return false; } - if (mixin < min_mixin) + if (min_actual_mixin < min_mixin) { if (n_unmixable == 0) { - MERROR_VER("Tx " << get_transaction_hash(tx) << " has too low ring size (" << (mixin + 1) << "), and no unmixable inputs"); + MERROR_VER("Tx " << get_transaction_hash(tx) << " has too low ring size (" << (min_actual_mixin + 1) << "), and no unmixable inputs"); tvc.m_low_mixin = true; return false; } if (n_mixable > 1) { - MERROR_VER("Tx " << get_transaction_hash(tx) << " has too low ring size (" << (mixin + 1) << "), and more than one mixable input with unmixable inputs"); + MERROR_VER("Tx " << get_transaction_hash(tx) << " has too low ring size (" << (min_actual_mixin + 1) << "), and more than one mixable input with unmixable inputs"); tvc.m_low_mixin = true; return false; } |