diff options
| -rw-r--r-- | src/wallet/wallet2.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index d845dd896..e05a6318d 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -582,6 +582,14 @@ tools::wallet2::tx_construction_data get_construction_data_with_decrypted_short_ return construction_data; } +uint32_t get_subaddress_clamped_sum(uint32_t idx, uint32_t extra) +{ + static constexpr uint32_t uint32_max = std::numeric_limits<uint32_t>::max(); + if (idx > uint32_max - extra) + return uint32_max; + return idx + extra; +} + //----------------------------------------------------------------- } //namespace @@ -876,9 +884,10 @@ void wallet2::expand_subaddresses(const cryptonote::subaddress_index& index) { // add new accounts cryptonote::subaddress_index index2; - for (index2.major = m_subaddress_labels.size(); index2.major < index.major + m_subaddress_lookahead_major; ++index2.major) + const uint32_t major_end = get_subaddress_clamped_sum(index.major, m_subaddress_lookahead_major); + for (index2.major = m_subaddress_labels.size(); index2.major < major_end; ++index2.major) { - const uint32_t end = (index2.major == index.major ? index.minor : 0) + m_subaddress_lookahead_minor; + const uint32_t end = get_subaddress_clamped_sum((index2.major == index.major ? index.minor : 0), m_subaddress_lookahead_minor); const std::vector<crypto::public_key> pkeys = cryptonote::get_subaddress_spend_public_keys(m_account.get_keys(), index2.major, 0, end, hwdev); for (index2.minor = 0; index2.minor < end; ++index2.minor) { @@ -892,7 +901,7 @@ void wallet2::expand_subaddresses(const cryptonote::subaddress_index& index) else if (m_subaddress_labels[index.major].size() <= index.minor) { // add new subaddresses - const uint32_t end = index.minor + m_subaddress_lookahead_minor; + const uint32_t end = get_subaddress_clamped_sum(index.minor, m_subaddress_lookahead_minor); const uint32_t begin = m_subaddress_labels[index.major].size(); cryptonote::subaddress_index index2 = {index.major, begin}; const std::vector<crypto::public_key> pkeys = cryptonote::get_subaddress_spend_public_keys(m_account.get_keys(), index2.major, index2.minor, end, hwdev); @@ -924,6 +933,8 @@ void wallet2::set_subaddress_label(const cryptonote::subaddress_index& index, co //---------------------------------------------------------------------------------------------------- void wallet2::set_subaddress_lookahead(size_t major, size_t minor) { + THROW_WALLET_EXCEPTION_IF(major > 0xffffffff, error::wallet_internal_error, "Subaddress major lookahead is too large"); + THROW_WALLET_EXCEPTION_IF(minor > 0xffffffff, error::wallet_internal_error, "Subaddress minor lookahead is too large"); m_subaddress_lookahead_major = major; m_subaddress_lookahead_minor = minor; } |