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wallet2: try all tx keys when scanning a new transaction

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The vast majority of transactions will have just one tx pubkey,
but a bug with cold wallet signing caused two such keys to be
there, with the second one being the real one.
This commit is contained in:
moneromooo-monero 2016-11-15 19:12:12 +00:00
parent 072d646a45
commit 11ae1873f8
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
2 changed files with 9 additions and 4 deletions
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4
src/cryptonote_core/cryptonote_format_utils.h
View file

@ -93,9 +93,9 @@ namespace cryptonote
bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, const std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, bool rct = false);
template<typename T>
bool find_tx_extra_field_by_type(const std::vector<tx_extra_field>& tx_extra_fields, T& field)
bool find_tx_extra_field_by_type(const std::vector<tx_extra_field>& tx_extra_fields, T& field, size_t index = 0)
{
auto it = std::find_if(tx_extra_fields.begin(), tx_extra_fields.end(), [](const tx_extra_field& f) { return typeid(T) == f.type(); });
auto it = std::find_if(tx_extra_fields.begin(), tx_extra_fields.end(), [&index](const tx_extra_field& f) { return typeid(T) == f.type() && !index--; });
if(tx_extra_fields.end() == it)
return false;

9
src/wallet/wallet2.cpp
View file

@ -631,11 +631,16 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, const s
}
// Don't try to extract tx public key if tx has no ouputs
if (!tx.vout.empty())
size_t pk_index = 0;
while (!tx.vout.empty())
{
// if tx.vout is not empty, we loop through all tx pubkeys
tx_extra_pub_key pub_key_field;
if(!find_tx_extra_field_by_type(tx_extra_fields, pub_key_field))
if(!find_tx_extra_field_by_type(tx_extra_fields, pub_key_field, pk_index++))
{
if (pk_index > 1)
break;
LOG_PRINT_L0("Public key wasn't found in the transaction extra. Skipping transaction " << txid());
if(0 != m_callback)
m_callback->on_skip_transaction(height, tx);