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blockchain_blackball: add incremental mode

This commit is contained in:
moneromooo-monero 2018-03-18 10:55:21 +00:00
parent b26cd26333
commit 66f4700f57
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
1 changed files with 102 additions and 19 deletions
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121
src/blockchain_utilities/blockchain_blackball.cpp
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@ -28,8 +28,13 @@
#include <boost/range/adaptor/transformed.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/archive/portable_binary_iarchive.hpp>
#include <boost/archive/portable_binary_oarchive.hpp>
#include "common/unordered_containers_boost_serialization.h"
#include "common/command_line.h"
#include "common/varint.h"
#include "serialization/crypto.h"
#include "cryptonote_basic/cryptonote_boost_serialization.h"
#include "cryptonote_core/tx_pool.h"
#include "cryptonote_core/cryptonote_core.h"
#include "cryptonote_core/blockchain.h"
@ -49,9 +54,17 @@ struct output_data
{
uint64_t amount;
uint64_t index;
output_data(): amount(0), index(0) {}
output_data(uint64_t a, uint64_t i): amount(a), index(i) {}
bool operator==(const output_data &other) const { return other.amount == amount && other.index == index; }
template <typename t_archive> void serialize(t_archive &a, const unsigned int ver)
{
a & amount;
a & index;
}
};
BOOST_CLASS_VERSION(output_data, 0)
namespace std
{
template<> struct hash<output_data>
@ -66,6 +79,23 @@ namespace std
};
}
struct blackball_state_t
{
std::unordered_map<crypto::key_image, std::vector<uint64_t>> relative_rings;
std::unordered_map<output_data, std::unordered_set<crypto::key_image>> outputs;
std::unordered_map<std::string, uint64_t> processed_heights;
std::unordered_set<output_data> spent;
template <typename t_archive> void serialize(t_archive &a, const unsigned int ver)
{
a & relative_rings;
a & outputs;
a & processed_heights;
a & spent;
}
};
BOOST_CLASS_VERSION(blackball_state_t, 0)
static std::string get_default_db_path()
{
boost::filesystem::path dir = tools::get_default_data_dir();
@ -75,7 +105,7 @@ static std::string get_default_db_path()
return dir.string();
}
static bool for_all_transactions(const std::string &filename, const std::function<bool(const cryptonote::transaction_prefix&)> &f)
static bool for_all_transactions(const std::string &filename, uint64_t &start_idx, const std::function<bool(const cryptonote::transaction_prefix&)> &f)
{
MDB_env *env;
MDB_dbi dbi;
@ -109,7 +139,9 @@ static bool for_all_transactions(const std::string &filename, const std::functio
MDB_val v;
bool fret = true;
MDB_cursor_op op = MDB_FIRST;
k.mv_size = sizeof(uint64_t);
k.mv_data = &start_idx;
MDB_cursor_op op = MDB_SET;
while (1)
{
int ret = mdb_cursor_get(cur, &k, &v, op);
@ -119,6 +151,12 @@ static bool for_all_transactions(const std::string &filename, const std::functio
if (ret)
throw std::runtime_error("Failed to enumerate transactions: " + std::string(mdb_strerror(ret)));
if (k.mv_size != sizeof(uint64_t))
throw std::runtime_error("Bad key size");
const uint64_t idx = *(uint64_t*)k.mv_data;
if (idx < start_idx)
continue;
cryptonote::transaction_prefix tx;
blobdata bd;
bd.assign(reinterpret_cast<char*>(v.mv_data), v.mv_size);
@ -128,6 +166,7 @@ static bool for_all_transactions(const std::string &filename, const std::functio
bool r = do_serialize(ba, tx);
CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob");
start_idx = *(uint64_t*)k.mv_data;
if (!f(tx)) {
fret = false;
break;
@ -308,17 +347,41 @@ int main(int argc, char* argv[])
LOG_PRINT_L0("Scanning for blackballable outputs...");
size_t done = 0;
std::unordered_map<crypto::key_image, std::vector<uint64_t>> relative_rings;
std::unordered_map<output_data, std::unordered_set<crypto::key_image>> outputs;
std::unordered_set<output_data> spent, newly_spent;
blackball_state_t state;
std::unordered_set<output_data> newly_spent;
const std::string state_file_path = (boost::filesystem::path(output_file_path) / "blackball-state.bin").string();
LOG_PRINT_L0("Loading state data from " << state_file_path);
std::ifstream state_data_in;
state_data_in.open(state_file_path, std::ios_base::binary | std::ios_base::in);
if (!state_data_in.fail())
{
try
{
boost::archive::portable_binary_iarchive a(state_data_in);
a >> state;
}
catch (const std::exception &e)
{
MERROR("Failed to load state data from " << state_file_path << ", restarting from scratch");
state = blackball_state_t();
}
state_data_in.close();
}
uint64_t start_blackballed_outputs = state.spent.size();
cryptonote::block b = core_storage[0]->get_db().get_block_from_height(0);
tools::ringdb ringdb(output_file_path.string(), epee::string_tools::pod_to_hex(get_block_hash(b)));
for (size_t n = 0; n < inputs.size(); ++n)
{
LOG_PRINT_L0("Reading blockchain from " << inputs[n]);
for_all_transactions(inputs[n], [&](const cryptonote::transaction_prefix &tx)->bool
const std::string canonical = boost::filesystem::canonical(inputs[n]).string();
uint64_t start_idx = 0;
auto it = state.processed_heights.find(canonical);
if (it != state.processed_heights.end())
start_idx = it->second;
LOG_PRINT_L0("Reading blockchain from " << inputs[n] << " from " << start_idx);
for_all_transactions(inputs[n], start_idx, [&](const cryptonote::transaction_prefix &tx)->bool
{
for (const auto &in: tx.vin)
{
@ -331,7 +394,7 @@ int main(int argc, char* argv[])
const std::vector<uint64_t> absolute = cryptonote::relative_output_offsets_to_absolute(txin.key_offsets);
if (n == 0)
for (uint64_t out: absolute)
outputs[output_data(txin.amount, out)].insert(txin.k_image);
state.outputs[output_data(txin.amount, out)].insert(txin.k_image);
std::vector<uint64_t> new_ring = txin.key_offsets;
const uint32_t ring_size = txin.key_offsets.size();
@ -341,17 +404,17 @@ int main(int argc, char* argv[])
MINFO("Blackballing output " << pkey << ", due to being used in a 1-ring");
ringdb.blackball(pkey);
newly_spent.insert(output_data(txin.amount, txin.key_offsets[0]));
spent.insert(output_data(txin.amount, txin.key_offsets[0]));
state.spent.insert(output_data(txin.amount, txin.key_offsets[0]));
}
else if (relative_rings.find(txin.k_image) != relative_rings.end())
else if (state.relative_rings.find(txin.k_image) != state.relative_rings.end())
{
MINFO("Key image " << txin.k_image << " already seen: rings " <<
boost::join(relative_rings[txin.k_image] | boost::adaptors::transformed([](uint64_t out){return std::to_string(out);}), " ") <<
boost::join(state.relative_rings[txin.k_image] | boost::adaptors::transformed([](uint64_t out){return std::to_string(out);}), " ") <<
", " << boost::join(txin.key_offsets | boost::adaptors::transformed([](uint64_t out){return std::to_string(out);}), " "));
if (relative_rings[txin.k_image] != txin.key_offsets)
if (state.relative_rings[txin.k_image] != txin.key_offsets)
{
MINFO("Rings are different");
const std::vector<uint64_t> r0 = cryptonote::relative_output_offsets_to_absolute(relative_rings[txin.k_image]);
const std::vector<uint64_t> r0 = cryptonote::relative_output_offsets_to_absolute(state.relative_rings[txin.k_image]);
const std::vector<uint64_t> r1 = cryptonote::relative_output_offsets_to_absolute(txin.key_offsets);
std::vector<uint64_t> common;
for (uint64_t out: r0)
@ -369,7 +432,7 @@ int main(int argc, char* argv[])
MINFO("Blackballing output " << pkey << ", due to being used in rings with a single common element");
ringdb.blackball(pkey);
newly_spent.insert(output_data(txin.amount, common[0]));
spent.insert(output_data(txin.amount, common[0]));
state.spent.insert(output_data(txin.amount, common[0]));
}
else
{
@ -381,10 +444,11 @@ int main(int argc, char* argv[])
}
}
}
relative_rings[txin.k_image] = new_ring;
state.relative_rings[txin.k_image] = new_ring;
}
return true;
});
state.processed_heights[canonical] = start_idx;
}
while (!newly_spent.empty())
@ -395,15 +459,15 @@ int main(int argc, char* argv[])
for (const output_data &od: work_spent)
{
for (const crypto::key_image &ki: outputs[od])
for (const crypto::key_image &ki: state.outputs[od])
{
std::vector<uint64_t> absolute = cryptonote::relative_output_offsets_to_absolute(relative_rings[ki]);
std::vector<uint64_t> absolute = cryptonote::relative_output_offsets_to_absolute(state.relative_rings[ki]);
size_t known = 0;
uint64_t last_unknown = 0;
for (uint64_t out: absolute)
{
output_data new_od(od.amount, out);
if (spent.find(new_od) != spent.end())
if (state.spent.find(new_od) != state.spent.end())
++known;
else
last_unknown = out;
@ -415,12 +479,31 @@ int main(int argc, char* argv[])
absolute.size() << "-ring where all other outputs are known to be spent");
ringdb.blackball(pkey);
newly_spent.insert(output_data(od.amount, last_unknown));
spent.insert(output_data(od.amount, last_unknown));
state.spent.insert(output_data(od.amount, last_unknown));
}
}
}
}
LOG_PRINT_L0("Saving state data to " << state_file_path);
std::ofstream state_data_out;
state_data_out.open(state_file_path, std::ios_base::binary | std::ios_base::out | std::ios::trunc);
if (!state_data_out.fail())
{
try
{
boost::archive::portable_binary_oarchive a(state_data_out);
a << state;
}
catch (const std::exception &e)
{
MERROR("Failed to save state data to " << state_file_path);
}
state_data_out.close();
}
uint64_t diff = state.spent.size() - start_blackballed_outputs;
LOG_PRINT_L0(std::to_string(diff) << " new outputs blackballed, " << state.spent.size() << " total outputs blackballed");
LOG_PRINT_L0("Blockchain blackball data exported OK");
return 0;