diff options
Diffstat (limited to 'src/cryptonote_core')
| -rw-r--r-- | src/cryptonote_core/blockchain.cpp | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp index 5f9db676c..ed47f9433 100644 --- a/src/cryptonote_core/blockchain.cpp +++ b/src/cryptonote_core/blockchain.cpp @@ -3309,7 +3309,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc, size_t n_unmixable = 0, n_mixable = 0; 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; + const size_t min_mixin = hf_version >= HF_VERSION_MIN_MIXIN_15 ? 15 : 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) { // non txin_to_key inputs will be rejected below @@ -3352,14 +3352,11 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc, } } - 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 (min_actual_mixin < min_mixin) + // The only circumstance where ring sizes less than expected are + // allowed is when spending unmixable non-RCT outputs in the chain. + // Caveat: at HF_VERSION_MIN_MIXIN_15, temporarily allow ring sizes + // of 11 to allow a grace period in the transition to larger ring size. + if (min_actual_mixin < min_mixin && !(hf_version == HF_VERSION_MIN_MIXIN_15 && min_actual_mixin == 10)) { if (n_unmixable == 0) { @@ -3373,6 +3370,15 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc, tvc.m_low_mixin = true; return false; } + } else if ((hf_version > HF_VERSION_MIN_MIXIN_15 && min_actual_mixin > 15) + || (hf_version == HF_VERSION_MIN_MIXIN_15 && min_actual_mixin != 15 && min_actual_mixin != 10) // grace period to allow either 15 or 10 + || (hf_version < HF_VERSION_MIN_MIXIN_15 && hf_version >= HF_VERSION_MIN_MIXIN_10+2 && min_actual_mixin > 10) + || ((hf_version == HF_VERSION_MIN_MIXIN_10 || hf_version == HF_VERSION_MIN_MIXIN_10+1) && min_actual_mixin != 10) + ) + { + MERROR_VER("Tx " << get_transaction_hash(tx) << " has invalid ring size (" << (min_actual_mixin + 1) << "), it should be " << (min_mixin + 1)); + tvc.m_low_mixin = true; + return false; } // min/max tx version based on HF, and we accept v1 txes if having a non mixable |