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wallet: fix another facet of "did I get some monero" information leak

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We get new pool txes before processing any tx, pool or not.
This ensures that if we're asked for a password, this does not
cause a measurable delay in the txpool query after the last
block query.
This commit is contained in:
moneromooo-monero 2019-10-15 18:10:29 +00:00
parent d5472bd87b
commit fd35e2304a
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
4 changed files with 50 additions and 15 deletions
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12
src/simplewallet/simplewallet.cpp
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@ -8356,7 +8356,11 @@ bool simple_wallet::get_transfers(std::vector<std::string>& local_args, std::vec
m_in_manual_refresh.store(true, std::memory_order_relaxed);
epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){m_in_manual_refresh.store(false, std::memory_order_relaxed);});
m_wallet->update_pool_state();
std::vector<std::pair<cryptonote::transaction, bool>> process_txs;
m_wallet->update_pool_state(process_txs);
if (!process_txs.empty())
m_wallet->process_pool_state(process_txs);
std::list<std::pair<crypto::hash, tools::wallet2::pool_payment_details>> payments;
m_wallet->get_unconfirmed_payments(payments, m_current_subaddress_account, subaddr_indices);
for (std::list<std::pair<crypto::hash, tools::wallet2::pool_payment_details>>::const_iterator i = payments.begin(); i != payments.end(); ++i) {
@ -10002,7 +10006,11 @@ bool simple_wallet::show_transfer(const std::vector<std::string> &args)
try
{
m_wallet->update_pool_state();
std::vector<std::pair<cryptonote::transaction, bool>> process_txs;
m_wallet->update_pool_state(process_txs);
if (!process_txs.empty())
m_wallet->process_pool_state(process_txs);
std::list<std::pair<crypto::hash, tools::wallet2::pool_payment_details>> pool_payments;
m_wallet->get_unconfirmed_payments(pool_payments, m_current_subaddress_account);
for (std::list<std::pair<crypto::hash, tools::wallet2::pool_payment_details>>::const_iterator i = pool_payments.begin(); i != pool_payments.end(); ++i) {

40
src/wallet/wallet2.cpp
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@ -2829,7 +2829,7 @@ void wallet2::remove_obsolete_pool_txs(const std::vector<crypto::hash> &tx_hashe
}
//----------------------------------------------------------------------------------------------------
void wallet2::update_pool_state(bool refreshed)
void wallet2::update_pool_state(std::vector<std::pair<cryptonote::transaction, bool>> &process_txs, bool refreshed)
{
MTRACE("update_pool_state start");
@ -3019,13 +3019,7 @@ void wallet2::update_pool_state(bool refreshed)
[tx_hash](const std::pair<crypto::hash, bool> &e) { return e.first == tx_hash; });
if (i != txids.end())
{
process_new_transaction(tx_hash, tx, std::vector<uint64_t>(), 0, 0, time(NULL), false, true, tx_entry.double_spend_seen, {});
m_scanned_pool_txs[0].insert(tx_hash);
if (m_scanned_pool_txs[0].size() > 5000)
{
std::swap(m_scanned_pool_txs[0], m_scanned_pool_txs[1]);
m_scanned_pool_txs[0].clear();
}
process_txs.push_back(std::make_pair(tx, tx_entry.double_spend_seen));
}
else
{
@ -3056,6 +3050,24 @@ void wallet2::update_pool_state(bool refreshed)
MTRACE("update_pool_state end");
}
//----------------------------------------------------------------------------------------------------
void wallet2::process_pool_state(const std::vector<std::pair<cryptonote::transaction, bool>> &txs)
{
const time_t now = time(NULL);
for (const auto &e: txs)
{
const cryptonote::transaction &tx = e.first;
const bool double_spend_seen = e.second;
const crypto::hash tx_hash = get_transaction_hash(tx);
process_new_transaction(tx_hash, tx, std::vector<uint64_t>(), 0, 0, now, false, true, double_spend_seen, {});
m_scanned_pool_txs[0].insert(tx_hash);
if (m_scanned_pool_txs[0].size() > 5000)
{
std::swap(m_scanned_pool_txs[0], m_scanned_pool_txs[1]);
m_scanned_pool_txs[0].clear();
}
}
}
//----------------------------------------------------------------------------------------------------
void wallet2::fast_refresh(uint64_t stop_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, bool force)
{
std::vector<crypto::hash> hashes;
@ -3259,6 +3271,14 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo
});
auto scope_exit_handler_hwdev = epee::misc_utils::create_scope_leave_handler([&](){hwdev.computing_key_images(false);});
// get updated pool state first, but do not process those txes just yet,
// since that might cause a password prompt, which would introduce a data
// leak allowing a passive adversary with traffic analysis capability to
// infer when we get an incoming output
std::vector<std::pair<cryptonote::transaction, bool>> process_pool_txs;
update_pool_state(process_pool_txs, refreshed);
bool first = true, last = false;
while(m_run.load(std::memory_order_relaxed))
{
@ -3389,8 +3409,8 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo
try
{
// If stop() is called we don't need to check pending transactions
if (check_pool && m_run.load(std::memory_order_relaxed))
update_pool_state(refreshed);
if (check_pool && m_run.load(std::memory_order_relaxed) && !process_pool_txs.empty())
process_pool_state(process_pool_txs);
}
catch (...)
{

3
src/wallet/wallet2.h
View File

@ -1219,7 +1219,8 @@ private:
bool import_key_images(signed_tx_set & signed_tx, size_t offset=0, bool only_selected_transfers=false);
crypto::public_key get_tx_pub_key_from_received_outs(const tools::wallet2::transfer_details &td) const;
void update_pool_state(bool refreshed = false);
void update_pool_state(std::vector<std::pair<cryptonote::transaction, bool>> &process_txs, bool refreshed = false);
void process_pool_state(const std::vector<std::pair<cryptonote::transaction, bool>> &txs);
void remove_obsolete_pool_txs(const std::vector<crypto::hash> &tx_hashes);
std::string encrypt(const char *plaintext, size_t len, const crypto::secret_key &skey, bool authenticated = true) const;

10
src/wallet/wallet_rpc_server.cpp
View File

@ -2438,7 +2438,10 @@ namespace tools
if (req.pool)
{
m_wallet->update_pool_state();
std::vector<std::pair<cryptonote::transaction, bool>> process_txs;
m_wallet->update_pool_state(process_txs);
if (!process_txs.empty())
m_wallet->process_pool_state(process_txs);
std::list<std::pair<crypto::hash, tools::wallet2::pool_payment_details>> payments;
m_wallet->get_unconfirmed_payments(payments, account_index, subaddr_indices);
@ -2518,7 +2521,10 @@ namespace tools
}
}
m_wallet->update_pool_state();
std::vector<std::pair<cryptonote::transaction, bool>> process_txs;
m_wallet->update_pool_state(process_txs);
if (!process_txs.empty())
m_wallet->process_pool_state(process_txs);
std::list<std::pair<crypto::hash, tools::wallet2::pool_payment_details>> pool_payments;
m_wallet->get_unconfirmed_payments(pool_payments, req.account_index);