diff options
| -rw-r--r-- | src/wallet/wallet2.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index 743a49ccb..b5392d5f9 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -6163,6 +6163,20 @@ void wallet2::load(const std::string& wallet_, const epee::wipeable_string& pass error::wallet_files_doesnt_correspond, m_keys_file, m_wallet_file); } + // Wallets used to wipe, but not erase, old unused multisig key info, which lead to huge memory leaks. + // Here we erase these multisig keys if they're zero'd out to free up space. + for (auto &td : m_transfers) + { + auto mk_it = td.m_multisig_k.begin(); + while (mk_it != td.m_multisig_k.end()) + { + if (*mk_it == rct::zero()) + mk_it = td.m_multisig_k.erase(mk_it); + else + ++mk_it; + } + } + cryptonote::block genesis; generate_genesis(genesis); crypto::hash genesis_hash = get_block_hash(genesis); @@ -7036,7 +7050,10 @@ void wallet2::commit_tx(pending_tx& ptx) // tx generated, get rid of used k values for (size_t idx: ptx.selected_transfers) + { memwipe(m_transfers[idx].m_multisig_k.data(), m_transfers[idx].m_multisig_k.size() * sizeof(m_transfers[idx].m_multisig_k[0])); + m_transfers[idx].m_multisig_k.clear(); + } //fee includes dust if dust policy specified it. LOG_PRINT_L1("Transaction successfully sent. <" << txid << ">" << ENDL @@ -7540,7 +7557,10 @@ std::string wallet2::save_multisig_tx(multisig_tx_set txs) // txes generated, get rid of used k values for (size_t n = 0; n < txs.m_ptx.size(); ++n) for (size_t idx: txs.m_ptx[n].construction_data.selected_transfers) + { memwipe(m_transfers[idx].m_multisig_k.data(), m_transfers[idx].m_multisig_k.size() * sizeof(m_transfers[idx].m_multisig_k[0])); + m_transfers[idx].m_multisig_k.clear(); + } // zero out some data we don't want to share for (auto &ptx: txs.m_ptx) @@ -7864,7 +7884,10 @@ bool wallet2::sign_multisig_tx(multisig_tx_set &exported_txs, std::vector<crypto // inputs in the transactions worked on here) for (size_t n = 0; n < exported_txs.m_ptx.size(); ++n) for (size_t idx: exported_txs.m_ptx[n].construction_data.selected_transfers) + { memwipe(m_transfers[idx].m_multisig_k.data(), m_transfers[idx].m_multisig_k.size() * sizeof(m_transfers[idx].m_multisig_k[0])); + m_transfers[idx].m_multisig_k.clear(); + } exported_txs.m_signers.insert(get_multisig_signer_public_key()); @@ -13511,7 +13534,10 @@ cryptonote::blobdata wallet2::export_multisig() transfer_details &td = m_transfers[n]; crypto::key_image ki; if (td.m_multisig_k.size()) + { memwipe(td.m_multisig_k.data(), td.m_multisig_k.size() * sizeof(td.m_multisig_k[0])); + td.m_multisig_k.clear(); + } info[n].m_LR.clear(); info[n].m_partial_key_images.clear(); |