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Merge pull request #6289

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ffe7165e wallet: reroll fake outs selection on local tx_sanity_check failure (xiphon)
This commit is contained in:
Alexander Blair
2020-03-27 12:28:29 -07:00
parent 5ba6eef272 ffe7165ebf
commit 8cb005b39c
5 changed files with 59 additions and 12 deletions
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src/wallet/wallet2.cpp
+44 -2
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@@ -44,6 +44,7 @@
using namespace epee;
#include "cryptonote_config.h"
#include "cryptonote_core/tx_sanity_check.h"
#include "wallet_rpc_helpers.h"
#include "wallet2.h"
#include "cryptonote_basic/cryptonote_format_utils.h"
@@ -7774,7 +7775,49 @@ void wallet2::light_wallet_get_outs(std::vector<std::vector<tools::wallet2::get_
}
}
std::pair<std::set<uint64_t>, size_t> outs_unique(const std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs)
{
std::set<uint64_t> unique;
size_t total = 0;
for (const auto &it : outs)
{
for (const auto &out : it)
{
const uint64_t global_index = std::get<0>(out);
unique.insert(global_index);
}
total += it.size();
}
return std::make_pair(std::move(unique), total);
}
void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, const std::vector<size_t> &selected_transfers, size_t fake_outputs_count)
{
std::vector<uint64_t> rct_offsets;
for (size_t attempts = 3; attempts > 0; --attempts)
{
get_outs(outs, selected_transfers, fake_outputs_count, rct_offsets);
const auto unique = outs_unique(outs);
if (tx_sanity_check(unique.first, unique.second, rct_offsets.empty() ? 0 : rct_offsets.back()))
{
return;
}
std::vector<crypto::key_image> key_images;
key_images.reserve(selected_transfers.size());
std::for_each(selected_transfers.begin(), selected_transfers.end(), [this, &key_images](size_t index) {
key_images.push_back(m_transfers[index].m_key_image);
});
unset_ring(key_images);
}
THROW_WALLET_EXCEPTION(error::wallet_internal_error, tr("Transaction sanity check failed"));
}
void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, const std::vector<size_t> &selected_transfers, size_t fake_outputs_count, std::vector<uint64_t> &rct_offsets)
{
LOG_PRINT_L2("fake_outputs_count: " << fake_outputs_count);
outs.clear();
@@ -7796,7 +7839,6 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
// 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;
uint64_t max_rct_index = 0;
for (size_t idx: selected_transfers)
@@ -7805,7 +7847,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
has_rct = true;
max_rct_index = std::max(max_rct_index, m_transfers[idx].m_global_output_index);
}
const bool has_rct_distribution = has_rct && get_rct_distribution(rct_start_height, rct_offsets);
const bool has_rct_distribution = has_rct && (!rct_offsets.empty() || 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