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wallet: use the prefered rct case only when enough rct outs exist

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moneromooo-monero 2016-07-27 21:37:58 +01:00
parent c27194a444
commit 230fca2d56
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2 changed files with 27 additions and 1 deletions
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26
src/wallet/wallet2.cpp
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@ -3303,7 +3303,9 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
// try to pick outputs not from the same block. We will get two outputs, one for // try to pick outputs not from the same block. We will get two outputs, one for
// the destination, and one for change. // the destination, and one for change.
std::vector<size_t> prefered_inputs; std::vector<size_t> prefered_inputs;
if (use_rct) uint64_t rct_outs_needed = 2 * (fake_outs_count + 1);
rct_outs_needed += 100; // some fudge factor since we don't know how many are locked
if (use_rct && get_num_rct_outputs() >= rct_outs_needed)
{ {
// this is used to build a tx that's 1 or 2 inputs, and 2 outputs, which // this is used to build a tx that's 1 or 2 inputs, and 2 outputs, which
// will get us a known fee. // will get us a known fee.
@ -3878,6 +3880,28 @@ std::vector<size_t> wallet2::select_available_outputs_from_histogram(uint64_t co
}); });
} }
//---------------------------------------------------------------------------------------------------- //----------------------------------------------------------------------------------------------------
uint64_t wallet2::get_num_rct_outputs()
{
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.push_back(0);
req_t.params.min_count = 0;
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, "get_num_rct_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);
THROW_WALLET_EXCEPTION_IF(resp_t.result.histogram.size() != 1, error::get_histogram_error, "Expected exactly one response");
THROW_WALLET_EXCEPTION_IF(resp_t.result.histogram[0].amount != 0, error::get_histogram_error, "Expected 0 amount");
return resp_t.result.histogram[0].instances;
}
//----------------------------------------------------------------------------------------------------
std::vector<size_t> wallet2::select_available_unmixable_outputs(bool trusted_daemon) std::vector<size_t> wallet2::select_available_unmixable_outputs(bool trusted_daemon)
{ {
// request all outputs with less than 3 instances // request all outputs with less than 3 instances

2
src/wallet/wallet2.h
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@ -391,6 +391,8 @@ namespace tools
bool get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key) const; bool get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key) const;
uint64_t get_num_rct_outputs();
void get_hard_fork_info(uint8_t version, uint64_t &earliest_height); void get_hard_fork_info(uint8_t version, uint64_t &earliest_height);
bool use_fork_rules(uint8_t version, uint64_t early_blocks = 0); bool use_fork_rules(uint8_t version, uint64_t early_blocks = 0);