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wallet2: fix double counting outs if more than one pubkey #3985

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merged 1 commit into from
Jul 3, 2018
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wallet2: fix double counting outs if more than one pubkey #3985

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34 changes: 24 additions & 10 deletions src/wallet/wallet2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1172,6 +1172,7 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
// Don't try to extract tx public key if tx has no ouputs
size_t pk_index = 0;
std::vector<tx_scan_info_t> tx_scan_info(tx.vout.size());
std::unordered_set<crypto::public_key> public_keys_seen;
while (!tx.vout.empty())
{
// if tx.vout is not empty, we loop through all tx pubkeys
Expand All @@ -1192,6 +1193,13 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
error::wallet_internal_error, "tx_cache_data is out of sync");
}

if (public_keys_seen.find(pub_key_field.pub_key) != public_keys_seen.end())
{
MWARNING("The same transaction pubkey is present more than once, ignoring extra instance");
continue;
}
public_keys_seen.insert(pub_key_field.pub_key);

int num_vouts_received = 0;
tx_pub_key = pub_key_field.pub_key;
tools::threadpool& tpool = tools::threadpool::getInstance();
Expand All @@ -1216,16 +1224,19 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
memcpy(&derivation, rct::identity().bytes, sizeof(derivation));
}

// additional tx pubkeys and derivations for multi-destination transfers involving one or more subaddresses
if (find_tx_extra_field_by_type(tx_extra_fields, additional_tx_pub_keys))
if (pk_index == 1)
{
for (size_t i = 0; i < additional_tx_pub_keys.data.size(); ++i)
// additional tx pubkeys and derivations for multi-destination transfers involving one or more subaddresses
if (find_tx_extra_field_by_type(tx_extra_fields, additional_tx_pub_keys))
{
additional_derivations.push_back({});
if (!hwdev.generate_key_derivation(additional_tx_pub_keys.data[i], keys.m_view_secret_key, additional_derivations.back()))
for (size_t i = 0; i < additional_tx_pub_keys.data.size(); ++i)
{
MWARNING("Failed to generate key derivation from additional tx pubkey in " << txid << ", skipping");
memcpy(&additional_derivations.back(), rct::identity().bytes, sizeof(crypto::key_derivation));
additional_derivations.push_back({});
if (!hwdev.generate_key_derivation(additional_tx_pub_keys.data[i], keys.m_view_secret_key, additional_derivations.back()))
{
MWARNING("Failed to generate key derivation from additional tx pubkey in " << txid << ", skipping");
memcpy(&additional_derivations.back(), rct::identity().bytes, sizeof(crypto::key_derivation));
}
}
}
}
Expand All @@ -1236,10 +1247,13 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
error::wallet_internal_error, "pk_index out of range of tx_cache_data");
is_out_data_ptr = &tx_cache_data.primary[pk_index - 1];
derivation = tx_cache_data.primary[pk_index - 1].derivation;
for (size_t n = 0; n < tx_cache_data.additional.size(); ++n)
if (pk_index == 1)
{
additional_tx_pub_keys.data.push_back(tx_cache_data.additional[n].pkey);
additional_derivations.push_back(tx_cache_data.additional[n].derivation);
for (size_t n = 0; n < tx_cache_data.additional.size(); ++n)
{
additional_tx_pub_keys.data.push_back(tx_cache_data.additional[n].pkey);
additional_derivations.push_back(tx_cache_data.additional[n].derivation);
}
}
}

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