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Merge pull request #4899 

2be31b4c blockchain_blackball: spot when all outputs of an amount are spent (moneromooo-monero)
This commit is contained in:
Riccardo Spagni 2018-12-12 11:56:21 +02:00
parent c73ac91af8 2be31b4c9c
commit 85262ca8cd
No known key found for this signature in database
GPG Key ID: 55432DF31CCD4FCD
1 changed files with 95 additions and 1 deletions
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96
src/blockchain_utilities/blockchain_blackball.cpp
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@ -59,6 +59,7 @@ static MDB_dbi dbi_relative_rings;
static MDB_dbi dbi_outputs;
static MDB_dbi dbi_processed_txidx;
static MDB_dbi dbi_spent;
static MDB_dbi dbi_per_amount;
static MDB_dbi dbi_ring_instances;
static MDB_dbi dbi_stats;
static MDB_env *env = NULL;
@ -238,7 +239,7 @@ static void init(std::string cache_filename)
dbr = mdb_env_create(&env);
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to create LDMB environment: " + std::string(mdb_strerror(dbr)));
dbr = mdb_env_set_maxdbs(env, 6);
dbr = mdb_env_set_maxdbs(env, 7);
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to set max env dbs: " + std::string(mdb_strerror(dbr)));
const std::string actual_filename = get_cache_filename(cache_filename);
dbr = mdb_env_open(env, actual_filename.c_str(), flags, 0664);
@ -265,6 +266,10 @@ static void init(std::string cache_filename)
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open LMDB dbi: " + std::string(mdb_strerror(dbr)));
mdb_set_dupsort(txn, dbi_spent, compare_uint64);
dbr = mdb_dbi_open(txn, "per_amount", MDB_CREATE | MDB_INTEGERKEY, &dbi_per_amount);
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open LMDB dbi: " + std::string(mdb_strerror(dbr)));
mdb_set_compare(txn, dbi_per_amount, compare_uint64);
dbr = mdb_dbi_open(txn, "ring_instances", MDB_CREATE, &dbi_ring_instances);
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open LMDB dbi: " + std::string(mdb_strerror(dbr)));
@ -283,6 +288,7 @@ static void close()
mdb_dbi_close(env, dbi_relative_rings);
mdb_dbi_close(env, dbi_outputs);
mdb_dbi_close(env, dbi_processed_txidx);
mdb_dbi_close(env, dbi_per_amount);
mdb_dbi_close(env, dbi_spent);
mdb_dbi_close(env, dbi_ring_instances);
mdb_dbi_close(env, dbi_stats);
@ -585,6 +591,55 @@ static std::vector<output_data> get_spent_outputs(MDB_txn *txn)
return outs;
}
static void get_per_amount_outputs(MDB_txn *txn, uint64_t amount, uint64_t &total, uint64_t &spent)
{
MDB_cursor *cur;
int dbr = mdb_cursor_open(txn, dbi_per_amount, &cur);
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open cursor for per amount outputs: " + std::string(mdb_strerror(dbr)));
MDB_val k, v;
mdb_size_t count = 0;
k.mv_size = sizeof(uint64_t);
k.mv_data = (void*)&amount;
dbr = mdb_cursor_get(cur, &k, &v, MDB_SET);
if (dbr == MDB_NOTFOUND)
{
total = spent = 0;
}
else
{
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to get per amount outputs: " + std::string(mdb_strerror(dbr)));
total = ((const uint64_t*)v.mv_data)[0];
spent = ((const uint64_t*)v.mv_data)[1];
}
mdb_cursor_close(cur);
}
static void inc_per_amount_outputs(MDB_txn *txn, uint64_t amount, uint64_t total, uint64_t spent)
{
MDB_cursor *cur;
int dbr = mdb_cursor_open(txn, dbi_per_amount, &cur);
CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open cursor for per amount outputs: " + std::string(mdb_strerror(dbr)));
MDB_val k, v;
mdb_size_t count = 0;
k.mv_size = sizeof(uint64_t);
k.mv_data = (void*)&amount;
dbr = mdb_cursor_get(cur, &k, &v, MDB_SET);
if (dbr == 0)
{
total += ((const uint64_t*)v.mv_data)[0];
spent += ((const uint64_t*)v.mv_data)[1];
}
else
{
CHECK_AND_ASSERT_THROW_MES(dbr == MDB_NOTFOUND, "Failed to get per amount outputs: " + std::string(mdb_strerror(dbr)));
}
uint64_t data[2] = {total, spent};
v.mv_size = 2 * sizeof(uint64_t);
v.mv_data = (void*)data;
dbr = mdb_cursor_put(cur, &k, &v, 0);
mdb_cursor_close(cur);
}
static uint64_t get_processed_txidx(const std::string &name)
{
MDB_txn *txn;
@ -1193,6 +1248,7 @@ int main(int argc, char* argv[])
for_all_transactions(filename, start_idx, n_txes, [&](const cryptonote::transaction_prefix &tx)->bool
{
std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush;
const bool miner_tx = tx.vin.size() == 1 && tx.vin[0].type() == typeid(txin_gen);
for (const auto &in: tx.vin)
{
if (in.type() != typeid(txin_to_key))
@ -1210,6 +1266,9 @@ int main(int argc, char* argv[])
std::vector<uint64_t> new_ring = canonicalize(txin.key_offsets);
const uint32_t ring_size = txin.key_offsets.size();
const uint64_t instances = inc_ring_instances(txn, txin.amount, new_ring);
uint64_t pa_total = 0, pa_spent = 0;
if (!opt_rct_only)
get_per_amount_outputs(txn, txin.amount, pa_total, pa_spent);
if (n == 0 && ring_size == 1)
{
const std::pair<uint64_t, uint64_t> output = std::make_pair(txin.amount, absolute[0]);
@ -1237,6 +1296,21 @@ int main(int argc, char* argv[])
inc_stat(txn, txin.amount ? "pre-rct-duplicate-rings" : "rct-duplicate-rings");
}
}
else if (n == 0 && !opt_rct_only && pa_spent + 1 == pa_total)
{
for (size_t o = 0; o < pa_total; ++o)
{
const std::pair<uint64_t, uint64_t> output = std::make_pair(txin.amount, o);
if (opt_verbose)
{
MINFO("Marking output " << output.first << "/" << output.second << " as spent, due to as many outputs of that amount being spent as exist so far");
std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush;
}
blackballs.push_back(output);
if (add_spent_output(cur, output_data(txin.amount, o)))
inc_stat(txn, txin.amount ? "pre-rct-full-count" : "rct-full-count");
}
}
else if (n == 0 && opt_check_subsets && get_ring_subset_instances(txn, txin.amount, new_ring) >= new_ring.size())
{
for (size_t o = 0; o < new_ring.size(); ++o)
@ -1299,9 +1373,28 @@ int main(int argc, char* argv[])
}
}
if (n == 0)
{
set_relative_ring(txn, txin.k_image, new_ring);
if (!opt_rct_only)
inc_per_amount_outputs(txn, txin.amount, 0, 1);
}
}
set_processed_txidx(txn, canonical, start_idx+1);
if (!opt_rct_only)
{
for (const auto &out: tx.vout)
{
uint64_t amount = out.amount;
if (miner_tx && tx.version >= 2)
amount = 0;
if (opt_rct_only && amount != 0)
continue;
if (out.target.type() != typeid(txout_to_key))
continue;
inc_per_amount_outputs(txn, amount, 1, 0);
}
}
++records;
if (records >= records_per_sync)
@ -1433,6 +1526,7 @@ skip_secondary_passes:
{ "pre-rct-ring-size-1", pre_rct }, { "rct-ring-size-1", rct },
{ "pre-rct-duplicate-rings", pre_rct }, { "rct-duplicate-rings", rct },
{ "pre-rct-subset-rings", pre_rct }, { "rct-subset-rings", rct },
{ "pre-rct-full-count", pre_rct }, { "rct-full-count", rct },
{ "pre-rct-key-image-attack", pre_rct }, { "rct-key-image-attack", rct },
{ "pre-rct-extra", pre_rct }, { "rct-ring-extra", rct },
{ "pre-rct-chain-reaction", pre_rct }, { "rct-chain-reaction", rct },