mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
341 lines
15 KiB
C++
341 lines
15 KiB
C++
|
// Copyright (c) 2018, The Monero Project
|
||
|
//
|
||
|
// All rights reserved.
|
||
|
//
|
||
|
// Redistribution and use in source and binary forms, with or without modification, are
|
||
|
// permitted provided that the following conditions are met:
|
||
|
//
|
||
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
||
|
// conditions and the following disclaimer.
|
||
|
//
|
||
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
||
|
// of conditions and the following disclaimer in the documentation and/or other
|
||
|
// materials provided with the distribution.
|
||
|
//
|
||
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
||
|
// used to endorse or promote products derived from this software without specific
|
||
|
// prior written permission.
|
||
|
//
|
||
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
||
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
||
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
||
|
#include <lmdb.h>
|
||
|
#include <boost/algorithm/string.hpp>
|
||
|
#include <boost/range/adaptor/transformed.hpp>
|
||
|
#include <boost/filesystem.hpp>
|
||
|
#include "misc_log_ex.h"
|
||
|
#include "misc_language.h"
|
||
|
#include "wallet_errors.h"
|
||
|
#include "ringdb.h"
|
||
|
|
||
|
#undef MONERO_DEFAULT_LOG_CATEGORY
|
||
|
#define MONERO_DEFAULT_LOG_CATEGORY "wallet.ringdb"
|
||
|
|
||
|
static int compare_hash32(const MDB_val *a, const MDB_val *b)
|
||
|
{
|
||
|
uint32_t *va = (uint32_t*) a->mv_data;
|
||
|
uint32_t *vb = (uint32_t*) b->mv_data;
|
||
|
for (int n = 7; n >= 0; n--)
|
||
|
{
|
||
|
if (va[n] == vb[n])
|
||
|
continue;
|
||
|
return va[n] < vb[n] ? -1 : 1;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static std::string compress_ring(const std::vector<uint64_t> &ring)
|
||
|
{
|
||
|
std::string s;
|
||
|
for (uint64_t out: ring)
|
||
|
s += tools::get_varint_data(out);
|
||
|
return s;
|
||
|
}
|
||
|
|
||
|
static std::vector<uint64_t> decompress_ring(const std::string &s)
|
||
|
{
|
||
|
std::vector<uint64_t> ring;
|
||
|
int read = 0;
|
||
|
for (std::string::const_iterator i = s.begin(); i != s.cend(); std::advance(i, read))
|
||
|
{
|
||
|
uint64_t out;
|
||
|
std::string tmp(i, s.cend());
|
||
|
read = tools::read_varint(tmp.begin(), tmp.end(), out);
|
||
|
THROW_WALLET_EXCEPTION_IF(read <= 0 || read > 256, tools::error::wallet_internal_error, "Internal error decompressing ring");
|
||
|
ring.push_back(out);
|
||
|
}
|
||
|
return ring;
|
||
|
}
|
||
|
|
||
|
std::string get_rings_filename(boost::filesystem::path filename)
|
||
|
{
|
||
|
if (!boost::filesystem::is_directory(filename))
|
||
|
filename.remove_filename();
|
||
|
return filename.string();
|
||
|
}
|
||
|
|
||
|
static crypto::chacha_iv make_iv(const crypto::key_image &key_image, const crypto::chacha_key &key)
|
||
|
{
|
||
|
static const char salt[] = "ringdsb";
|
||
|
|
||
|
uint8_t buffer[sizeof(key_image) + sizeof(key) + sizeof(salt)];
|
||
|
memcpy(buffer, &key_image, sizeof(key_image));
|
||
|
memcpy(buffer + sizeof(key_image), &key, sizeof(key));
|
||
|
memcpy(buffer + sizeof(key_image) + sizeof(key), salt, sizeof(salt));
|
||
|
crypto::hash hash;
|
||
|
crypto::cn_fast_hash(buffer, sizeof(buffer), hash.data);
|
||
|
static_assert(sizeof(hash) >= CHACHA_IV_SIZE, "Incompatible hash and chacha IV sizes");
|
||
|
crypto::chacha_iv iv;
|
||
|
memcpy(&iv, &hash, CHACHA_IV_SIZE);
|
||
|
return iv;
|
||
|
}
|
||
|
|
||
|
static std::string encrypt(const std::string &plaintext, const crypto::key_image &key_image, const crypto::chacha_key &key)
|
||
|
{
|
||
|
const crypto::chacha_iv iv = make_iv(key_image, key);
|
||
|
std::string ciphertext;
|
||
|
ciphertext.resize(plaintext.size() + sizeof(iv));
|
||
|
crypto::chacha20(plaintext.data(), plaintext.size(), key, iv, &ciphertext[sizeof(iv)]);
|
||
|
memcpy(&ciphertext[0], &iv, sizeof(iv));
|
||
|
return ciphertext;
|
||
|
}
|
||
|
|
||
|
static std::string encrypt(const crypto::key_image &key_image, const crypto::chacha_key &key)
|
||
|
{
|
||
|
return encrypt(std::string((const char*)&key_image, sizeof(key_image)), key_image, key);
|
||
|
}
|
||
|
|
||
|
static std::string decrypt(const std::string &ciphertext, const crypto::key_image &key_image, const crypto::chacha_key &key)
|
||
|
{
|
||
|
const crypto::chacha_iv iv = make_iv(key_image, key);
|
||
|
std::string plaintext;
|
||
|
THROW_WALLET_EXCEPTION_IF(ciphertext.size() < sizeof(iv), tools::error::wallet_internal_error, "Bad ciphertext text");
|
||
|
plaintext.resize(ciphertext.size() - sizeof(iv));
|
||
|
crypto::chacha20(ciphertext.data() + sizeof(iv), ciphertext.size() - sizeof(iv), key, iv, &plaintext[0]);
|
||
|
return plaintext;
|
||
|
}
|
||
|
|
||
|
static int resize_env(MDB_env *env, const char *db_path, size_t n_entries)
|
||
|
{
|
||
|
MDB_envinfo mei;
|
||
|
MDB_stat mst;
|
||
|
int ret;
|
||
|
|
||
|
ret = mdb_env_info(env, &mei);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
ret = mdb_env_stat(env, &mst);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
uint64_t size_used = mst.ms_psize * mei.me_last_pgno;
|
||
|
const size_t needed = n_entries * (32 + 1024); // highball 1kB for the ring data to make sure
|
||
|
uint64_t mapsize = mei.me_mapsize;
|
||
|
if (size_used + needed > mei.me_mapsize)
|
||
|
{
|
||
|
try
|
||
|
{
|
||
|
boost::filesystem::path path(db_path);
|
||
|
boost::filesystem::space_info si = boost::filesystem::space(path);
|
||
|
if(si.available < needed)
|
||
|
{
|
||
|
MERROR("!! WARNING: Insufficient free space to extend database !!: " << (si.available >> 20L) << " MB available");
|
||
|
return ENOSPC;
|
||
|
}
|
||
|
}
|
||
|
catch(...)
|
||
|
{
|
||
|
// print something but proceed.
|
||
|
MWARNING("Unable to query free disk space.");
|
||
|
}
|
||
|
|
||
|
mapsize += needed;
|
||
|
}
|
||
|
return mdb_env_set_mapsize(env, mapsize);
|
||
|
}
|
||
|
|
||
|
namespace tools { namespace ringdb
|
||
|
{
|
||
|
|
||
|
bool add_rings(const std::string &filename, const crypto::chacha_key &chacha_key, const cryptonote::transaction_prefix &tx)
|
||
|
{
|
||
|
MDB_env *env;
|
||
|
MDB_dbi dbi;
|
||
|
MDB_txn *txn;
|
||
|
int dbr;
|
||
|
bool tx_active = false;
|
||
|
|
||
|
if (filename.empty())
|
||
|
return true;
|
||
|
tools::create_directories_if_necessary(filename);
|
||
|
|
||
|
dbr = mdb_env_create(&env);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LDMB environment: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_env_set_maxdbs(env, 1);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set max env dbs: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_env_open(env, get_rings_filename(filename).c_str(), 0, 0664);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to open rings database file: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller env_dtor = epee::misc_utils::create_scope_leave_handler([&](){mdb_env_close(env);});
|
||
|
dbr = resize_env(env, filename.c_str(), tx.vin.size());
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set env map size: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_txn_begin(env, NULL, 0, &txn);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller txn_dtor = epee::misc_utils::create_scope_leave_handler([&](){if (tx_active) mdb_txn_abort(txn);});
|
||
|
tx_active = true;
|
||
|
dbr = mdb_dbi_open(txn, "rings", MDB_CREATE, &dbi);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to open LMDB dbi: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller dbi_dtor = epee::misc_utils::create_scope_leave_handler([&](){mdb_dbi_close(env, dbi);});
|
||
|
mdb_set_compare(txn, dbi, compare_hash32);
|
||
|
|
||
|
for (const auto &in: tx.vin)
|
||
|
{
|
||
|
if (in.type() != typeid(cryptonote::txin_to_key))
|
||
|
continue;
|
||
|
const auto &txin = boost::get<cryptonote::txin_to_key>(in);
|
||
|
const uint32_t ring_size = txin.key_offsets.size();
|
||
|
if (ring_size == 1)
|
||
|
continue;
|
||
|
|
||
|
MDB_val key, data;
|
||
|
std::string key_ciphertext = encrypt(txin.k_image, chacha_key);
|
||
|
key.mv_data = (void*)key_ciphertext.data();
|
||
|
key.mv_size = key_ciphertext.size();
|
||
|
MDEBUG("Saving relative ring for key image " << txin.k_image << ": " <<
|
||
|
boost::join(txin.key_offsets | boost::adaptors::transformed([](uint64_t out){return std::to_string(out);}), " "));
|
||
|
std::string compressed_ring = compress_ring(txin.key_offsets);
|
||
|
std::string data_ciphertext = encrypt(compressed_ring, txin.k_image, chacha_key);
|
||
|
data.mv_size = data_ciphertext.size();
|
||
|
data.mv_data = (void*)data_ciphertext.c_str();
|
||
|
dbr = mdb_put(txn, dbi, &key, &data, 0);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to add ring to database: " + std::string(mdb_strerror(dbr)));
|
||
|
}
|
||
|
|
||
|
dbr = mdb_txn_commit(txn);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to commit txn adding ring to database: " + std::string(mdb_strerror(dbr)));
|
||
|
tx_active = false;
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool remove_rings(const std::string &filename, const crypto::chacha_key &chacha_key, const cryptonote::transaction_prefix &tx)
|
||
|
{
|
||
|
MDB_env *env;
|
||
|
MDB_dbi dbi;
|
||
|
MDB_txn *txn;
|
||
|
int dbr;
|
||
|
bool tx_active = false;
|
||
|
|
||
|
if (filename.empty())
|
||
|
return true;
|
||
|
tools::create_directories_if_necessary(filename);
|
||
|
|
||
|
dbr = mdb_env_create(&env);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LDMB environment: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_env_set_maxdbs(env, 1);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set max env dbs: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_env_open(env, get_rings_filename(filename).c_str(), 0, 0664);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to open rings database file: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller env_dtor = epee::misc_utils::create_scope_leave_handler([&](){mdb_env_close(env);});
|
||
|
dbr = resize_env(env, filename.c_str(), tx.vin.size());
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set env map size: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_txn_begin(env, NULL, 0, &txn);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller txn_dtor = epee::misc_utils::create_scope_leave_handler([&](){if (tx_active) mdb_txn_abort(txn);});
|
||
|
tx_active = true;
|
||
|
dbr = mdb_dbi_open(txn, "rings", MDB_CREATE, &dbi);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to open LMDB dbi: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller dbi_dtor = epee::misc_utils::create_scope_leave_handler([&](){mdb_dbi_close(env, dbi);});
|
||
|
mdb_set_compare(txn, dbi, compare_hash32);
|
||
|
|
||
|
for (const auto &in: tx.vin)
|
||
|
{
|
||
|
if (in.type() != typeid(cryptonote::txin_to_key))
|
||
|
continue;
|
||
|
const auto &txin = boost::get<cryptonote::txin_to_key>(in);
|
||
|
const uint32_t ring_size = txin.key_offsets.size();
|
||
|
if (ring_size == 1)
|
||
|
continue;
|
||
|
|
||
|
MDB_val key, data;
|
||
|
std::string key_ciphertext = encrypt(txin.k_image, chacha_key);
|
||
|
key.mv_data = (void*)key_ciphertext.data();
|
||
|
key.mv_size = key_ciphertext.size();
|
||
|
|
||
|
dbr = mdb_get(txn, dbi, &key, &data);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr && dbr != MDB_NOTFOUND, tools::error::wallet_internal_error, "Failed to look for key image in LMDB table: " + std::string(mdb_strerror(dbr)));
|
||
|
if (dbr == MDB_NOTFOUND)
|
||
|
continue;
|
||
|
THROW_WALLET_EXCEPTION_IF(data.mv_size <= 0, tools::error::wallet_internal_error, "Invalid ring data size");
|
||
|
|
||
|
MDEBUG("Removing ring data for key image " << txin.k_image);
|
||
|
dbr = mdb_del(txn, dbi, &key, NULL);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to remove ring to database: " + std::string(mdb_strerror(dbr)));
|
||
|
}
|
||
|
|
||
|
dbr = mdb_txn_commit(txn);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to commit txn removing ring to database: " + std::string(mdb_strerror(dbr)));
|
||
|
tx_active = false;
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool get_ring(const std::string &filename, const crypto::chacha_key &chacha_key, const crypto::key_image &key_image, std::vector<uint64_t> &outs)
|
||
|
{
|
||
|
MDB_env *env;
|
||
|
MDB_dbi dbi;
|
||
|
MDB_txn *txn;
|
||
|
int dbr;
|
||
|
bool tx_active = false;
|
||
|
|
||
|
if (filename.empty())
|
||
|
return false;
|
||
|
tools::create_directories_if_necessary(filename);
|
||
|
|
||
|
dbr = mdb_env_create(&env);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LDMB environment: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_env_set_maxdbs(env, 1);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set max env dbs: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_env_open(env, get_rings_filename(filename).c_str(), 0, 0664);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to open rings database file: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller env_dtor = epee::misc_utils::create_scope_leave_handler([&](){mdb_env_close(env);});
|
||
|
dbr = resize_env(env, filename.c_str(), 0);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to set env map size: " + std::string(mdb_strerror(dbr)));
|
||
|
dbr = mdb_txn_begin(env, NULL, 0, &txn);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to create LMDB transaction: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller txn_dtor = epee::misc_utils::create_scope_leave_handler([&](){if (tx_active) mdb_txn_abort(txn);});
|
||
|
tx_active = true;
|
||
|
dbr = mdb_dbi_open(txn, "rings", MDB_CREATE, &dbi);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to open LMDB dbi: " + std::string(mdb_strerror(dbr)));
|
||
|
epee::misc_utils::auto_scope_leave_caller dbi_dtor = epee::misc_utils::create_scope_leave_handler([&](){mdb_dbi_close(env, dbi);});
|
||
|
mdb_set_compare(txn, dbi, compare_hash32);
|
||
|
|
||
|
MDB_val key, data;
|
||
|
std::string key_ciphertext = encrypt(key_image, chacha_key);
|
||
|
key.mv_data = (void*)key_ciphertext.data();
|
||
|
key.mv_size = key_ciphertext.size();
|
||
|
dbr = mdb_get(txn, dbi, &key, &data);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr && dbr != MDB_NOTFOUND, tools::error::wallet_internal_error, "Failed to look for key image in LMDB table: " + std::string(mdb_strerror(dbr)));
|
||
|
if (dbr == MDB_NOTFOUND)
|
||
|
return false;
|
||
|
THROW_WALLET_EXCEPTION_IF(data.mv_size <= 0, tools::error::wallet_internal_error, "Invalid ring data size");
|
||
|
|
||
|
std::string data_plaintext = decrypt(std::string((const char*)data.mv_data, data.mv_size), key_image, chacha_key);
|
||
|
outs = decompress_ring(data_plaintext);
|
||
|
MDEBUG("Found ring for key image " << key_image << ":");
|
||
|
MDEBUG("Relative: " << boost::join(outs | boost::adaptors::transformed([](uint64_t out){return std::to_string(out);}), " "));
|
||
|
outs = cryptonote::relative_output_offsets_to_absolute(outs);
|
||
|
MDEBUG("Absolute: " << boost::join(outs | boost::adaptors::transformed([](uint64_t out){return std::to_string(out);}), " "));
|
||
|
|
||
|
dbr = mdb_txn_commit(txn);
|
||
|
THROW_WALLET_EXCEPTION_IF(dbr, tools::error::wallet_internal_error, "Failed to commit txn getting ring from database: " + std::string(mdb_strerror(dbr)));
|
||
|
tx_active = false;
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
}}
|