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wallet: change sweep_dust to sweep_unmixable

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With the change in mixin rules for v2, the "annoying" outputs are
slightly changed. There is high correlation between dust and
unmixable, but no equivalence.
This commit is contained in:
moneromooo-monero 2016-03-26 21:15:47 +00:00
parent 600a3cf0c0
commit 12146daeed
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GPG key ID: 686F07454D6CEFC3
6 changed files with 129 additions and 30 deletions
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104
src/wallet/wallet2.cpp
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@ -2508,7 +2508,7 @@ uint64_t wallet2::unlocked_dust_balance(const tx_dust_policy &dust_policy) const
}
template<typename T>
void wallet2::transfer_dust(size_t num_outputs, uint64_t unlock_time, uint64_t needed_fee, T destination_split_strategy, const tx_dust_policy& dust_policy, const std::vector<uint8_t> &extra, cryptonote::transaction& tx, pending_tx &ptx)
void wallet2::transfer_from(const std::vector<size_t> &outs, size_t num_outputs, uint64_t unlock_time, uint64_t needed_fee, T destination_split_strategy, const tx_dust_policy& dust_policy, const std::vector<uint8_t> &extra, cryptonote::transaction& tx, pending_tx &ptx)
{
using namespace cryptonote;
@ -2518,6 +2518,19 @@ void wallet2::transfer_dust(size_t num_outputs, uint64_t unlock_time, uint64_t n
// throw if there are none
uint64_t money = 0;
std::list<transfer_container::iterator> selected_transfers;
#if 1
for (size_t n = 0; n < outs.size(); ++n)
{
const transfer_details& td = m_transfers[outs[n]];
if (!td.m_spent)
{
selected_transfers.push_back (m_transfers.begin() + outs[n]);
money += td.amount();
if (selected_transfers.size() >= num_outputs)
break;
}
}
#else
for (transfer_container::iterator i = m_transfers.begin(); i != m_transfers.end(); ++i)
{
const transfer_details& td = *i;
@ -2529,6 +2542,7 @@ void wallet2::transfer_dust(size_t num_outputs, uint64_t unlock_time, uint64_t n
break;
}
}
#endif
// we don't allow no output to self, easier, but one may want to burn the dust if = fee
THROW_WALLET_EXCEPTION_IF(money <= needed_fee, error::not_enough_money, money, needed_fee, needed_fee);
@ -2622,8 +2636,8 @@ bool wallet2::use_fork_rules(uint8_t version)
r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
m_daemon_rpc_mutex.unlock();
CHECK_AND_ASSERT_MES(r, false, "Failed to connect to daemon");
CHECK_AND_ASSERT_MES(res.status != CORE_RPC_STATUS_BUSY, false, "Failed to connect to daemon");
CHECK_AND_ASSERT_MES(res.status == CORE_RPC_STATUS_OK, false, "Failed to get hard fork status");
CHECK_AND_ASSERT_MES(resp_t.result.status != CORE_RPC_STATUS_BUSY, false, "Failed to connect to daemon");
CHECK_AND_ASSERT_MES(resp_t.result.status == CORE_RPC_STATUS_OK, false, "Failed to get hard fork status");
bool close_enough = res.height >= resp_t.result.earliest_height - 10; // start using the rules a bit beforehand
if (close_enough)
@ -2641,20 +2655,84 @@ uint64_t wallet2::get_upper_tranaction_size_limit()
return ((full_reward_zone * 125) / 100) - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
}
//----------------------------------------------------------------------------------------------------
std::vector<wallet2::pending_tx> wallet2::create_dust_sweep_transactions()
std::vector<size_t> wallet2::select_available_outputs(std::function<bool(const transfer_details &td)> f)
{
std::vector<size_t> outputs;
size_t n = 0;
for (transfer_container::const_iterator i = m_transfers.begin(); i != m_transfers.end(); ++i, ++n)
{
if (i->m_spent)
continue;
if (!is_transfer_unlocked(*i))
continue;
if (f(*i))
outputs.push_back(n);
}
return outputs;
}
//----------------------------------------------------------------------------------------------------
std::vector<uint64_t> wallet2::get_unspent_amounts_vector()
{
std::set<uint64_t> set;
for (const auto &td: m_transfers)
{
if (!td.m_spent)
set.insert(td.amount());
}
std::vector<uint64_t> vector;
vector.reserve(set.size());
for (const auto &i: set)
{
vector.push_back(i);
}
return vector;
}
//----------------------------------------------------------------------------------------------------
std::vector<size_t> wallet2::select_available_unmixable_outputs()
{
// request all outputs with at least 3 instances, so we can use mixin 2 with
epee::json_rpc::request<cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::request> req_t = AUTO_VAL_INIT(req_t);
epee::json_rpc::response<cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::response, std::string> resp_t = AUTO_VAL_INIT(resp_t);
m_daemon_rpc_mutex.lock();
req_t.jsonrpc = "2.0";
req_t.id = epee::serialization::storage_entry(0);
req_t.method = "get_output_histogram";
req_t.params.amounts = get_unspent_amounts_vector();
req_t.params.min_count = 3;
req_t.params.max_count = 0;
bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
m_daemon_rpc_mutex.unlock();
THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "select_available_unmixable_outputs");
THROW_WALLET_EXCEPTION_IF(resp_t.result.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_output_histogram");
THROW_WALLET_EXCEPTION_IF(resp_t.result.status != CORE_RPC_STATUS_OK, error::get_histogram_error, resp_t.result.status);
std::set<uint64_t> mixable;
for (const auto &i: resp_t.result.histogram)
{
mixable.insert(i.amount);
}
return select_available_outputs([mixable](const transfer_details &td) {
const uint64_t amount = td.amount();
if (mixable.find(amount) == mixable.end())
return true;
return false;
});
}
//----------------------------------------------------------------------------------------------------
std::vector<wallet2::pending_tx> wallet2::create_unmixable_sweep_transactions()
{
// From hard fork 1, we don't consider small amounts to be dust anymore
const bool hf1_rules = use_fork_rules(2); // first hard fork has version 2
tx_dust_policy dust_policy(hf1_rules ? 0 : ::config::DEFAULT_DUST_THRESHOLD);
size_t num_dust_outputs = 0;
for (transfer_container::const_iterator i = m_transfers.begin(); i != m_transfers.end(); ++i)
// may throw
std::vector<size_t> unmixable_outputs = select_available_unmixable_outputs();
size_t num_dust_outputs = unmixable_outputs.size();
if (num_dust_outputs == 0)
{
const transfer_details& td = *i;
if (!td.m_spent && (td.amount() < dust_policy.dust_threshold || !is_valid_decomposed_amount(td.amount())) && is_transfer_unlocked(td))
{
num_dust_outputs++;
}
return std::vector<wallet2::pending_tx>();
}
// failsafe split attempt counter
@ -2679,13 +2757,13 @@ std::vector<wallet2::pending_tx> wallet2::create_dust_sweep_transactions()
uint64_t needed_fee = 0;
do
{
transfer_dust(num_outputs_per_tx, (uint64_t)0 /* unlock_time */, 0, detail::digit_split_strategy, dust_policy, extra, tx, ptx);
transfer_from(unmixable_outputs, num_outputs_per_tx, (uint64_t)0 /* unlock_time */, 0, detail::digit_split_strategy, dust_policy, extra, tx, ptx);
auto txBlob = t_serializable_object_to_blob(ptx.tx);
needed_fee = calculate_fee(txBlob);
// reroll the tx with the actual amount minus the fee
// if there's not enough for the fee, it'll throw
transfer_dust(num_outputs_per_tx, (uint64_t)0 /* unlock_time */, needed_fee, detail::digit_split_strategy, dust_policy, extra, tx, ptx);
transfer_from(unmixable_outputs, num_outputs_per_tx, (uint64_t)0 /* unlock_time */, needed_fee, detail::digit_split_strategy, dust_policy, extra, tx, ptx);
txBlob = t_serializable_object_to_blob(ptx.tx);
needed_fee = calculate_fee(txBlob);
} while (ptx.fee < needed_fee);