diff options
Diffstat (limited to 'src/wallet')
| -rw-r--r-- | src/wallet/wallet2.cpp | 143 | ||||
| -rw-r--r-- | src/wallet/wallet2.h | 2 |
2 files changed, 115 insertions, 30 deletions
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index 90807803a..66f1fecbc 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -2547,7 +2547,7 @@ bool wallet2::refresh(bool trusted_daemon, uint64_t & blocks_fetched, bool& rece return ok; } //---------------------------------------------------------------------------------------------------- -bool wallet2::get_output_distribution(uint64_t &start_height, std::vector<uint64_t> &distribution) +bool wallet2::get_rct_distribution(uint64_t &start_height, std::vector<uint64_t> &distribution) { uint32_t rpc_version; boost::optional<std::string> result = m_node_rpc_proxy.get_rpc_version(rpc_version); @@ -6206,22 +6206,42 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> bool is_shortly_after_segregation_fork = height >= segregation_fork_height && height < segregation_fork_height + SEGREGATION_FORK_VICINITY; bool is_after_segregation_fork = height >= segregation_fork_height; + // if we have at least one rct out, get the distribution, or fall back to the previous system + uint64_t rct_start_height; + std::vector<uint64_t> rct_offsets; + bool has_rct = false; + for (size_t idx: selected_transfers) + if (m_transfers[idx].is_rct()) + { has_rct = true; break; } + const bool has_rct_distribution = has_rct && get_rct_distribution(rct_start_height, rct_offsets); + if (has_rct_distribution) + { + // check we're clear enough of rct start, to avoid corner cases below + THROW_WALLET_EXCEPTION_IF(rct_offsets.size() <= CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE, + error::get_output_distribution, "Not enough rct outputs"); + } + // get histogram for the amounts we need cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::request req_t = AUTO_VAL_INIT(req_t); cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::response resp_t = AUTO_VAL_INIT(resp_t); - m_daemon_rpc_mutex.lock(); + // request histogram for all outputs, except 0 if we have the rct distribution for(size_t idx: selected_transfers) - req_t.amounts.push_back(m_transfers[idx].is_rct() ? 0 : m_transfers[idx].amount()); - std::sort(req_t.amounts.begin(), req_t.amounts.end()); - auto end = std::unique(req_t.amounts.begin(), req_t.amounts.end()); - req_t.amounts.resize(std::distance(req_t.amounts.begin(), end)); - req_t.unlocked = true; - req_t.recent_cutoff = time(NULL) - RECENT_OUTPUT_ZONE; - bool r = net_utils::invoke_http_json_rpc("/json_rpc", "get_output_histogram", req_t, resp_t, m_http_client, rpc_timeout); - m_daemon_rpc_mutex.unlock(); - THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "transfer_selected"); - THROW_WALLET_EXCEPTION_IF(resp_t.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_output_histogram"); - THROW_WALLET_EXCEPTION_IF(resp_t.status != CORE_RPC_STATUS_OK, error::get_histogram_error, resp_t.status); + if (!m_transfers[idx].is_rct() || !has_rct_distribution) + req_t.amounts.push_back(m_transfers[idx].is_rct() ? 0 : m_transfers[idx].amount()); + if (!req_t.amounts.empty()) + { + std::sort(req_t.amounts.begin(), req_t.amounts.end()); + auto end = std::unique(req_t.amounts.begin(), req_t.amounts.end()); + req_t.amounts.resize(std::distance(req_t.amounts.begin(), end)); + req_t.unlocked = true; + req_t.recent_cutoff = time(NULL) - RECENT_OUTPUT_ZONE; + m_daemon_rpc_mutex.lock(); + bool r = net_utils::invoke_http_json_rpc("/json_rpc", "get_output_histogram", req_t, resp_t, m_http_client, rpc_timeout); + m_daemon_rpc_mutex.unlock(); + THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "transfer_selected"); + THROW_WALLET_EXCEPTION_IF(resp_t.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_output_histogram"); + THROW_WALLET_EXCEPTION_IF(resp_t.status != CORE_RPC_STATUS_OK, error::get_histogram_error, resp_t.status); + } // if we want to segregate fake outs pre or post fork, get distribution std::unordered_map<uint64_t, std::pair<uint64_t, uint64_t>> segregation_limit; @@ -6277,6 +6297,36 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> COMMAND_RPC_GET_OUTPUTS_BIN::request req = AUTO_VAL_INIT(req); COMMAND_RPC_GET_OUTPUTS_BIN::response daemon_resp = AUTO_VAL_INIT(daemon_resp); + struct gamma_engine + { + typedef uint64_t result_type; + static constexpr result_type min() { return 0; } + static constexpr result_type max() { return std::numeric_limits<result_type>::max(); } + result_type operator()() { return crypto::rand<result_type>(); } + } engine; + static const double shape = 19.28/*16.94*/; + //static const double shape = m_testnet ? 17.02 : 17.28; + static const double scale = 1/1.61; + std::gamma_distribution<double> gamma(shape, scale); + auto pick_gamma = [&]() + { + double x = gamma(engine); + x = exp(x); + uint64_t block_offset = x / DIFFICULTY_TARGET_V2; // this assumes constant target over the whole rct range + if (block_offset >= rct_offsets.size() - 1) + return std::numeric_limits<uint64_t>::max(); // bad pick + block_offset = rct_offsets.size() - 2 - block_offset; + THROW_WALLET_EXCEPTION_IF(block_offset >= rct_offsets.size() - 1, error::wallet_internal_error, "Bad offset calculation"); + THROW_WALLET_EXCEPTION_IF(rct_offsets[block_offset + 1] < rct_offsets[block_offset], + error::get_output_distribution, "Decreasing offsets in rct distribution: " + + std::to_string(block_offset) + ": " + std::to_string(rct_offsets[block_offset]) + ", " + + std::to_string(block_offset + 1) + ": " + std::to_string(rct_offsets[block_offset + 1])); + uint64_t n_rct = rct_offsets[block_offset + 1] - rct_offsets[block_offset]; + if (n_rct == 0) + return rct_offsets[block_offset] ? rct_offsets[block_offset] - 1 : 0; + return rct_offsets[block_offset] + crypto::rand<uint64_t>() % n_rct; + }; + size_t num_selected_transfers = 0; for(size_t idx: selected_transfers) { @@ -6287,6 +6337,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> // request more for rct in base recent (locked) coinbases are picked, since they're locked for longer size_t requested_outputs_count = base_requested_outputs_count + (td.is_rct() ? CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW - CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE : 0); size_t start = req.outputs.size(); + bool use_histogram = amount != 0 || !has_rct_distribution; const bool output_is_pre_fork = td.m_block_height < segregation_fork_height; uint64_t num_outs = 0, num_recent_outs = 0; @@ -6342,26 +6393,41 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> num_post_fork_outs = num_outs - segregation_limit[amount].first; } - LOG_PRINT_L1("" << num_outs << " unlocked outputs of size " << print_money(amount)); - THROW_WALLET_EXCEPTION_IF(num_outs == 0, error::wallet_internal_error, - "histogram reports no unlocked outputs for " + boost::lexical_cast<std::string>(amount) + ", not even ours"); - THROW_WALLET_EXCEPTION_IF(num_recent_outs > num_outs, error::wallet_internal_error, - "histogram reports more recent outs than outs for " + boost::lexical_cast<std::string>(amount)); + if (use_histogram) + { + LOG_PRINT_L1("" << num_outs << " unlocked outputs of size " << print_money(amount)); + THROW_WALLET_EXCEPTION_IF(num_outs == 0, error::wallet_internal_error, + "histogram reports no unlocked outputs for " + boost::lexical_cast<std::string>(amount) + ", not even ours"); + THROW_WALLET_EXCEPTION_IF(num_recent_outs > num_outs, error::wallet_internal_error, + "histogram reports more recent outs than outs for " + boost::lexical_cast<std::string>(amount)); + } + else + { + // the base offset of the first rct output in the first unlocked block (or the one to be if there's none) + num_outs = rct_offsets[rct_offsets.size() - CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE]; + LOG_PRINT_L1("" << num_outs << " unlocked rct outputs"); + THROW_WALLET_EXCEPTION_IF(num_outs == 0, error::wallet_internal_error, + "histogram reports no unlocked rct outputs, not even ours"); + } - // how many fake outs to draw on a pre-fork triangular distribution + // how many fake outs to draw on a pre-fork distribution size_t pre_fork_outputs_count = requested_outputs_count * pre_fork_num_out_ratio; size_t post_fork_outputs_count = requested_outputs_count * post_fork_num_out_ratio; // how many fake outs to draw otherwise size_t normal_output_count = requested_outputs_count - pre_fork_outputs_count - post_fork_outputs_count; - // X% of those outs are to be taken from recent outputs - size_t recent_outputs_count = normal_output_count * RECENT_OUTPUT_RATIO; - if (recent_outputs_count == 0) - recent_outputs_count = 1; // ensure we have at least one, if possible - if (recent_outputs_count > num_recent_outs) - recent_outputs_count = num_recent_outs; - if (td.m_global_output_index >= num_outs - num_recent_outs && recent_outputs_count > 0) - --recent_outputs_count; // if the real out is recent, pick one less recent fake out + size_t recent_outputs_count = 0; + if (use_histogram) + { + // X% of those outs are to be taken from recent outputs + recent_outputs_count = normal_output_count * RECENT_OUTPUT_RATIO; + if (recent_outputs_count == 0) + recent_outputs_count = 1; // ensure we have at least one, if possible + if (recent_outputs_count > num_recent_outs) + recent_outputs_count = num_recent_outs; + if (td.m_global_output_index >= num_outs - num_recent_outs && recent_outputs_count > 0) + --recent_outputs_count; // if the real out is recent, pick one less recent fake out + } LOG_PRINT_L1("Fake output makeup: " << requested_outputs_count << " requested: " << recent_outputs_count << " recent, " << pre_fork_outputs_count << " pre-fork, " << post_fork_outputs_count << " post-fork, " << (requested_outputs_count - recent_outputs_count - pre_fork_outputs_count - post_fork_outputs_count) << " full-chain"); @@ -6441,7 +6507,26 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> uint64_t i; const char *type = ""; - if (num_found - 1 < recent_outputs_count) // -1 to account for the real one we seeded with + if (amount == 0 && has_rct_distribution) + { + // gamma distribution + if (num_found -1 < recent_outputs_count + pre_fork_outputs_count) + { + do i = pick_gamma(); while (i >= segregation_limit[amount].first); + type = "pre-fork gamma"; + } + else if (num_found -1 < recent_outputs_count + pre_fork_outputs_count + post_fork_outputs_count) + { + do i = pick_gamma(); while (i < segregation_limit[amount].first || i >= num_outs); + type = "post-fork gamma"; + } + else + { + do i = pick_gamma(); while (i >= num_outs); + type = "gamma"; + } + } + else if (num_found - 1 < recent_outputs_count) // -1 to account for the real one we seeded with { // triangular distribution over [a,b) with a=0, mode c=b=up_index_limit uint64_t r = crypto::rand<uint64_t>() % ((uint64_t)1 << 53); @@ -6506,7 +6591,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> // get the keys for those m_daemon_rpc_mutex.lock(); - r = epee::net_utils::invoke_http_bin("/get_outs.bin", req, daemon_resp, m_http_client, rpc_timeout); + bool r = epee::net_utils::invoke_http_bin("/get_outs.bin", req, daemon_resp, m_http_client, rpc_timeout); m_daemon_rpc_mutex.unlock(); THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_outs.bin"); THROW_WALLET_EXCEPTION_IF(daemon_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_outs.bin"); diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h index 220eca8a8..0a9049c7b 100644 --- a/src/wallet/wallet2.h +++ b/src/wallet/wallet2.h @@ -1215,7 +1215,7 @@ namespace tools void cache_ringdb_key(); void clear_ringdb_key(); - bool get_output_distribution(uint64_t &start_height, std::vector<uint64_t> &distribution); + bool get_rct_distribution(uint64_t &start_height, std::vector<uint64_t> &distribution); uint64_t get_segregation_fork_height() const; |