diff options
Diffstat (limited to 'src/blockchain_utilities/blockchain_blackball.cpp')
| -rw-r--r-- | src/blockchain_utilities/blockchain_blackball.cpp | 131 |
1 files changed, 86 insertions, 45 deletions
diff --git a/src/blockchain_utilities/blockchain_blackball.cpp b/src/blockchain_utilities/blockchain_blackball.cpp index de7163208..e68de9dc4 100644 --- a/src/blockchain_utilities/blockchain_blackball.cpp +++ b/src/blockchain_utilities/blockchain_blackball.cpp @@ -293,14 +293,24 @@ static void close() static std::string compress_ring(const std::vector<uint64_t> &ring, std::string s = "") { + const size_t sz = s.size(); + s.resize(s.size() + 12 * ring.size()); + char *ptr = (char*)s.data() + sz; for (uint64_t out: ring) - s += tools::get_varint_data(out); + tools::write_varint(ptr, out); + if (ptr > s.data() + sz + 12 * ring.size()) + throw std::runtime_error("varint output overflow"); + s.resize(ptr - s.data()); return s; } static std::string compress_ring(uint64_t amount, const std::vector<uint64_t> &ring) { - return compress_ring(ring, tools::get_varint_data(amount)); + char s[12], *ptr = s; + tools::write_varint(ptr, amount); + if (ptr > s + sizeof(s)) + throw std::runtime_error("varint output overflow"); + return compress_ring(ring, std::string(s, ptr-s)); } static std::vector<uint64_t> decompress_ring(const std::string &s) @@ -518,27 +528,19 @@ static uint64_t get_num_spent_outputs() return count; } -static void add_spent_output(MDB_txn *txn, const output_data &od) +static void add_spent_output(MDB_cursor *cur, const output_data &od) { - MDB_cursor *cur; - int dbr = mdb_cursor_open(txn, dbi_spent, &cur); - CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open cursor for spent outputs: " + std::string(mdb_strerror(dbr))); MDB_val v = {sizeof(od), (void*)&od}; - dbr = mdb_cursor_put(cur, (MDB_val *)&zerokval, &v, MDB_NODUPDATA); + int dbr = mdb_cursor_put(cur, (MDB_val *)&zerokval, &v, MDB_NODUPDATA); CHECK_AND_ASSERT_THROW_MES(!dbr || dbr == MDB_KEYEXIST, "Failed to add spent output: " + std::string(mdb_strerror(dbr))); - mdb_cursor_close(cur); } -static bool is_output_spent(MDB_txn *txn, const output_data &od) +static bool is_output_spent(MDB_cursor *cur, const output_data &od) { - MDB_cursor *cur; - int dbr = mdb_cursor_open(txn, dbi_spent, &cur); - CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open cursor for spent outputs: " + std::string(mdb_strerror(dbr))); MDB_val v = {sizeof(od), (void*)&od}; - dbr = mdb_cursor_get(cur, (MDB_val *)&zerokval, &v, MDB_GET_BOTH); + int dbr = mdb_cursor_get(cur, (MDB_val *)&zerokval, &v, MDB_GET_BOTH); CHECK_AND_ASSERT_THROW_MES(!dbr || dbr == MDB_NOTFOUND, "Failed to get spent output: " + std::string(mdb_strerror(dbr))); bool spent = dbr == 0; - mdb_cursor_close(cur); return spent; } @@ -612,7 +614,6 @@ static void set_processed_txidx(MDB_txn *txn, const std::string &name, uint64_t static bool get_relative_ring(MDB_txn *txn, const crypto::key_image &ki, std::vector<uint64_t> &ring) { - const std::string sring = compress_ring(ring); MDB_val k, v; k.mv_data = (void*)&ki; k.mv_size = sizeof(ki); @@ -665,10 +666,11 @@ static uint64_t get_ring_subset_instances(MDB_txn *txn, uint64_t amount, const s return instances; uint64_t extra = 0; + std::vector<uint64_t> subset; + subset.reserve(ring.size()); for (uint64_t mask = 1; mask < (1u << ring.size()) - 1; ++mask) { - std::vector<uint64_t> subset; - subset.reserve(ring.size()); + subset.resize(0); for (size_t i = 0; i < ring.size(); ++i) if ((mask >> i) & 1) subset.push_back(ring[i]); @@ -677,16 +679,28 @@ static uint64_t get_ring_subset_instances(MDB_txn *txn, uint64_t amount, const s return instances + extra; } -static void set_ring_instances(MDB_txn *txn, uint64_t amount, const std::vector<uint64_t> &ring, uint64_t count) +static uint64_t inc_ring_instances(MDB_txn *txn, uint64_t amount, const std::vector<uint64_t> &ring) { const std::string sring = keep_under_511(compress_ring(amount, ring)); MDB_val k, v; k.mv_data = (void*)sring.data(); k.mv_size = sring.size(); + + int dbr = mdb_get(txn, dbi_ring_instances, &k, &v); + CHECK_AND_ASSERT_THROW_MES(!dbr || dbr == MDB_NOTFOUND, "Failed to get ring instances: " + std::string(mdb_strerror(dbr))); + + uint64_t count; + if (dbr == MDB_NOTFOUND) + count = 1; + else + count = 1 + *(const uint64_t*)v.mv_data; + v.mv_data = &count; v.mv_size = sizeof(count); - int dbr = mdb_put(txn, dbi_ring_instances, &k, &v, 0); - CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to get ring instances: " + std::string(mdb_strerror(dbr))); + dbr = mdb_put(txn, dbi_ring_instances, &k, &v, 0); + CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to set ring instances: " + std::string(mdb_strerror(dbr))); + + return count; } static std::vector<crypto::key_image> get_key_images(MDB_txn *txn, const output_data &od) @@ -899,6 +913,7 @@ int main(int argc, char* argv[]) }; const command_line::arg_descriptor<bool> arg_rct_only = {"rct-only", "Only work on ringCT outputs", false}; const command_line::arg_descriptor<bool> arg_check_subsets = {"check-subsets", "Check ring subsets (very expensive)", false}; + const command_line::arg_descriptor<bool> arg_verbose = {"verbose", "Verbose output)", false}; const command_line::arg_descriptor<std::vector<std::string> > arg_inputs = {"inputs", "Path to Monero DB, and path to any fork DBs"}; const command_line::arg_descriptor<std::string> arg_db_sync_mode = { "db-sync-mode" @@ -911,6 +926,7 @@ int main(int argc, char* argv[]) command_line::add_arg(desc_cmd_sett, arg_database); command_line::add_arg(desc_cmd_sett, arg_rct_only); command_line::add_arg(desc_cmd_sett, arg_check_subsets); + command_line::add_arg(desc_cmd_sett, arg_verbose); command_line::add_arg(desc_cmd_sett, arg_db_sync_mode); command_line::add_arg(desc_cmd_sett, arg_inputs); command_line::add_arg(desc_cmd_only, command_line::arg_help); @@ -950,6 +966,7 @@ int main(int argc, char* argv[]) output_file_path = command_line::get_arg(vm, arg_blackball_db_dir); bool opt_rct_only = command_line::get_arg(vm, arg_rct_only); bool opt_check_subsets = command_line::get_arg(vm, arg_check_subsets); + bool opt_verbose = command_line::get_arg(vm, arg_verbose); std::string db_type = command_line::get_arg(vm, arg_database); if (!cryptonote::blockchain_valid_db_type(db_type)) @@ -1011,6 +1028,9 @@ int main(int argc, char* argv[]) MDB_txn *txn; int dbr = mdb_txn_begin(env, NULL, 0, &txn); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr))); + MDB_cursor *cur; + dbr = mdb_cursor_open(txn, dbi_spent, &cur); + CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open LMDB cursor: " + std::string(mdb_strerror(dbr))); size_t records = 0; const std::string filename = inputs[n]; std::vector<crypto::public_key> blackballs; @@ -1034,16 +1054,17 @@ int main(int argc, char* argv[]) std::vector<uint64_t> relative_ring; std::vector<uint64_t> new_ring = canonicalize(txin.key_offsets); const uint32_t ring_size = txin.key_offsets.size(); - uint64_t instances = get_ring_instances(txn, txin.amount, new_ring); - ++instances; - set_ring_instances(txn, txin.amount, new_ring, instances); + const uint64_t instances = inc_ring_instances(txn, txin.amount, new_ring); if (n == 0 && ring_size == 1) { const crypto::public_key pkey = get_output_key(cur0, txin.amount, absolute[0]); - MINFO("Blackballing output " << pkey << ", due to being used in a 1-ring"); - std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + if (opt_verbose) + { + MINFO("Blackballing output " << pkey << ", due to being used in a 1-ring"); + std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + } blackballs.push_back(pkey); - add_spent_output(txn, output_data(txin.amount, absolute[0])); + add_spent_output(cur, output_data(txin.amount, absolute[0])); inc_stat(txn, txin.amount ? "pre-rct-ring-size-1" : "rct-ring-size-1"); } else if (n == 0 && instances == new_ring.size()) @@ -1051,10 +1072,13 @@ int main(int argc, char* argv[]) for (size_t o = 0; o < new_ring.size(); ++o) { const crypto::public_key pkey = get_output_key(cur0, txin.amount, absolute[o]); - MINFO("Blackballing output " << pkey << ", due to being used in " << new_ring.size() << " identical " << new_ring.size() << "-rings"); - std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + if (opt_verbose) + { + MINFO("Blackballing output " << pkey << ", due to being used in " << new_ring.size() << " identical " << new_ring.size() << "-rings"); + std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + } blackballs.push_back(pkey); - add_spent_output(txn, output_data(txin.amount, absolute[o])); + add_spent_output(cur, output_data(txin.amount, absolute[o])); inc_stat(txn, txin.amount ? "pre-rct-duplicate-rings" : "rct-duplicate-rings"); } } @@ -1063,10 +1087,13 @@ int main(int argc, char* argv[]) for (size_t o = 0; o < new_ring.size(); ++o) { const crypto::public_key pkey = get_output_key(cur0, txin.amount, absolute[o]); - MINFO("Blackballing output " << pkey << ", due to being used in " << new_ring.size() << " subsets of " << new_ring.size() << "-rings"); - std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + if (opt_verbose) + { + MINFO("Blackballing output " << pkey << ", due to being used in " << new_ring.size() << " subsets of " << new_ring.size() << "-rings"); + std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + } blackballs.push_back(pkey); - add_spent_output(txn, output_data(txin.amount, absolute[o])); + add_spent_output(cur, output_data(txin.amount, absolute[o])); inc_stat(txn, txin.amount ? "pre-rct-subset-rings" : "rct-subset-rings"); } } @@ -1096,10 +1123,13 @@ int main(int argc, char* argv[]) else if (common.size() == 1) { const crypto::public_key pkey = get_output_key(cur0, txin.amount, common[0]); - MINFO("Blackballing output " << pkey << ", due to being used in rings with a single common element"); - std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + if (opt_verbose) + { + MINFO("Blackballing output " << pkey << ", due to being used in rings with a single common element"); + std::cout << "\r" << start_idx << "/" << n_txes << " \r" << std::flush; + } blackballs.push_back(pkey); - add_spent_output(txn, output_data(txin.amount, common[0])); + add_spent_output(cur, output_data(txin.amount, common[0])); inc_stat(txn, txin.amount ? "pre-rct-key-image-attack" : "rct-key-image-attack"); } else @@ -1116,22 +1146,25 @@ int main(int argc, char* argv[]) if (n == 0) set_relative_ring(txn, txin.k_image, new_ring); } - if (!blackballs.empty()) - { - ringdb.blackball(blackballs); - blackballs.clear(); - } set_processed_txidx(txn, canonical, start_idx+1); ++records; if (records >= records_per_sync) { + if (!blackballs.empty()) + { + ringdb.blackball(blackballs); + blackballs.clear(); + } + mdb_cursor_close(cur); dbr = mdb_txn_commit(txn); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to commit txn creating/opening database: " + std::string(mdb_strerror(dbr))); int dbr = resize_env(cache_dir.c_str()); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to resize LMDB database: " + std::string(mdb_strerror(dbr))); dbr = mdb_txn_begin(env, NULL, 0, &txn); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr))); + dbr = mdb_cursor_open(txn, dbi_spent, &cur); + CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open LMDB cursor: " + std::string(mdb_strerror(dbr))); records = 0; } @@ -1142,6 +1175,7 @@ int main(int argc, char* argv[]) } return true; }); + mdb_cursor_close(cur); dbr = mdb_txn_commit(txn); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to commit txn creating/opening database: " + std::string(mdb_strerror(dbr))); LOG_PRINT_L0("blockchain from " << inputs[n] << " processed till tx idx " << start_idx); @@ -1173,6 +1207,9 @@ int main(int argc, char* argv[]) MDB_txn *txn; dbr = mdb_txn_begin(env, NULL, 0, &txn); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr))); + MDB_cursor *cur; + dbr = mdb_cursor_open(txn, dbi_spent, &cur); + CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to open LMDB cursor: " + std::string(mdb_strerror(dbr))); std::vector<crypto::public_key> blackballs; std::vector<output_data> scan_spent = std::move(work_spent); @@ -1190,18 +1227,21 @@ int main(int argc, char* argv[]) for (uint64_t out: absolute) { output_data new_od(od.amount, out); - if (is_output_spent(txn, new_od)) + if (is_output_spent(cur, new_od)) ++known; else last_unknown = out; } - if (known == absolute.size() - 1 && !is_output_spent(txn, output_data(od.amount, last_unknown))) + if (known == absolute.size() - 1) { const crypto::public_key pkey = get_output_key(cur0, od.amount, last_unknown); - MINFO("Blackballing output " << pkey << ", due to being used in a " << - absolute.size() << "-ring where all other outputs are known to be spent"); + if (opt_verbose) + { + MINFO("Blackballing output " << pkey << ", due to being used in a " << + absolute.size() << "-ring where all other outputs are known to be spent"); + } blackballs.push_back(pkey); - add_spent_output(txn, output_data(od.amount, last_unknown)); + add_spent_output(cur, output_data(od.amount, last_unknown)); work_spent.push_back(output_data(od.amount, last_unknown)); inc_stat(txn, od.amount ? "pre-rct-chain-reaction" : "rct-chain-reaction"); } @@ -1218,6 +1258,7 @@ int main(int argc, char* argv[]) ringdb.blackball(blackballs); blackballs.clear(); } + mdb_cursor_close(cur); dbr = mdb_txn_commit(txn); CHECK_AND_ASSERT_THROW_MES(!dbr, "Failed to commit txn creating/opening database: " + std::string(mdb_strerror(dbr))); } |