// Copyright (c) 2014-2016, 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.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#include "gtest/gtest.h"
#include "wallet/wallet2_api.h"
#include <boost/filesystem.hpp>
#include <boost/algorithm/string.hpp>
#include <iostream>
#include <vector>
#include <mutex>
#include <thread>
using namespace std;
//unsigned int epee::g_test_dbg_lock_sleep = 0;
namespace Consts
{
// TODO: get rid of hardcoded paths
const char * WALLET_NAME = "testwallet";
const char * WALLET_NAME_COPY = "testwallet_copy";
const char * WALLET_NAME_WITH_DIR = "walletdir/testwallet_test";
const char * WALLET_NAME_WITH_DIR_NON_WRITABLE = "/var/walletdir/testwallet_test";
const char * WALLET_PASS = "password";
const char * WALLET_PASS2 = "password22";
const char * WALLET_LANG = "English";
// change this according your environment
const std::string WALLETS_ROOT_DIR = "/home/mbg033/dev/monero/testnet/";
//const char * TESTNET_WALLET1_NAME = "/home/mbg033/dev/monero/testnet/wallet_01.bin";
//const char * TESTNET_WALLET2_NAME = "/home/mbg033/dev/monero/testnet/wallet_02.bin";
//const char * TESTNET_WALLET3_NAME = "/home/mbg033/dev/monero/testnet/wallet_03.bin";
//const char * TESTNET_WALLET4_NAME = "/home/mbg033/dev/monero/testnet/wallet_04.bin";
//const char * TESTNET_WALLET5_NAME = "/home/mbg033/dev/monero/testnet/wallet_05.bin";
const std::string TESTNET_WALLET1_NAME = WALLETS_ROOT_DIR + "wallet_01.bin";
const std::string TESTNET_WALLET2_NAME = WALLETS_ROOT_DIR + "wallet_02.bin";
const std::string TESTNET_WALLET3_NAME = WALLETS_ROOT_DIR + "wallet_03.bin";
const std::string TESTNET_WALLET4_NAME = WALLETS_ROOT_DIR + "wallet_04.bin";
const std::string TESTNET_WALLET5_NAME = WALLETS_ROOT_DIR + "wallet_05.bin";
const std::string TESTNET_WALLET6_NAME = WALLETS_ROOT_DIR + "wallet_06.bin";
const char * TESTNET_WALLET_PASS = "";
const std::string CURRENT_SRC_WALLET = TESTNET_WALLET1_NAME;
const std::string CURRENT_DST_WALLET = TESTNET_WALLET6_NAME;
const char * TESTNET_DAEMON_ADDRESS = "localhost:38081";
const uint64_t AMOUNT_10XMR = 10000000000000L;
const uint64_t AMOUNT_5XMR = 5000000000000L;
const uint64_t AMOUNT_1XMR = 1000000000000L;
}
using namespace Consts;
struct Utils
{
static void deleteWallet(const std::string & walletname)
{
std::cout << "** deleting wallet: " << walletname << std::endl;
boost::filesystem::remove(walletname);
boost::filesystem::remove(walletname + ".address.txt");
boost::filesystem::remove(walletname + ".keys");
}
static void deleteDir(const std::string &path)
{
std::cout << "** removing dir recursively: " << path << std::endl;
boost::filesystem::remove_all(path);
}
static void print_transaction(Bitmonero::TransactionInfo * t)
{
std::cout << "d: "
<< (t->direction() == Bitmonero::TransactionInfo::Direction_In ? "in" : "out")
<< ", pe: " << (t->isPending() ? "true" : "false")
<< ", bh: " << t->blockHeight()
<< ", a: " << Bitmonero::Wallet::displayAmount(t->amount())
<< ", f: " << Bitmonero::Wallet::displayAmount(t->fee())
<< ", h: " << t->hash()
<< ", pid: " << t->paymentId()
<< std::endl;
}
static std::string get_wallet_address(const std::string &filename, const std::string &password)
{
Bitmonero::WalletManager *wmgr = Bitmonero::WalletManagerFactory::getWalletManager();
Bitmonero::Wallet * w = wmgr->openWallet(filename, password, true);
std::string result = w->address();
wmgr->closeWallet(w);
return result;
}
};
struct WalletManagerTest : public testing::Test
{
Bitmonero::WalletManager * wmgr;
WalletManagerTest()
{
std::cout << __FUNCTION__ << std::endl;
wmgr = Bitmonero::WalletManagerFactory::getWalletManager();
Utils::deleteWallet(WALLET_NAME);
Utils::deleteDir(boost::filesystem::path(WALLET_NAME_WITH_DIR).parent_path().string());
}
~WalletManagerTest()
{
std::cout << __FUNCTION__ << std::endl;
//deleteWallet(WALLET_NAME);
}
};
struct WalletTest1 : public testing::Test
{
Bitmonero::WalletManager * wmgr;
WalletTest1()
{
wmgr = Bitmonero::WalletManagerFactory::getWalletManager();
}
};
struct WalletTest2 : public testing::Test
{
Bitmonero::WalletManager * wmgr;
WalletTest2()
{
wmgr = Bitmonero::WalletManagerFactory::getWalletManager();
}
};
TEST_F(WalletManagerTest, WalletManagerCreatesWallet)
{
Bitmonero::Wallet * wallet = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
ASSERT_TRUE(wallet->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(!wallet->seed().empty());
std::vector<std::string> words;
std::string seed = wallet->seed();
boost::split(words, seed, boost::is_any_of(" "), boost::token_compress_on);
ASSERT_TRUE(words.size() == 25);
std::cout << "** seed: " << wallet->seed() << std::endl;
ASSERT_FALSE(wallet->address().empty());
std::cout << "** address: " << wallet->address() << std::endl;
ASSERT_TRUE(wmgr->closeWallet(wallet));
}
TEST_F(WalletManagerTest, WalletManagerOpensWallet)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
ASSERT_TRUE(wmgr->closeWallet(wallet1));
Bitmonero::Wallet * wallet2 = wmgr->openWallet(WALLET_NAME, WALLET_PASS);
ASSERT_TRUE(wallet2->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet2->seed() == seed1);
std::cout << "** seed: " << wallet2->seed() << std::endl;
}
TEST_F(WalletManagerTest, WalletManagerStoresWallet)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
wallet1->store("");
ASSERT_TRUE(wmgr->closeWallet(wallet1));
Bitmonero::Wallet * wallet2 = wmgr->openWallet(WALLET_NAME, WALLET_PASS);
ASSERT_TRUE(wallet2->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet2->seed() == seed1);
}
TEST_F(WalletManagerTest, WalletManagerMovesWallet)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string WALLET_NAME_MOVED = std::string("/tmp/") + WALLET_NAME + ".moved";
std::string seed1 = wallet1->seed();
ASSERT_TRUE(wallet1->store(WALLET_NAME_MOVED));
Bitmonero::Wallet * wallet2 = wmgr->openWallet(WALLET_NAME_MOVED, WALLET_PASS);
ASSERT_TRUE(wallet2->filename() == WALLET_NAME_MOVED);
ASSERT_TRUE(wallet2->keysFilename() == WALLET_NAME_MOVED + ".keys");
ASSERT_TRUE(wallet2->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet2->seed() == seed1);
}
/*
TEST_F(WalletManagerTest, WalletManagerChangesPassword)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
ASSERT_TRUE(wallet1->setPassword(WALLET_PASS2));
ASSERT_TRUE(wmgr->closeWallet(wallet1));
Bitmonero::Wallet * wallet2 = wmgr->openWallet(WALLET_NAME, WALLET_PASS2);
ASSERT_TRUE(wallet2->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet2->seed() == seed1);
ASSERT_TRUE(wmgr->closeWallet(wallet2));
Bitmonero::Wallet * wallet3 = wmgr->openWallet(WALLET_NAME, WALLET_PASS);
ASSERT_FALSE(wallet3->status() == Bitmonero::Wallet::Status_Ok);
}
TEST_F(WalletManagerTest, WalletManagerRecoversWallet)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
std::string address1 = wallet1->address();
ASSERT_FALSE(address1.empty());
ASSERT_TRUE(wmgr->closeWallet(wallet1));
Utils::deleteWallet(WALLET_NAME);
Bitmonero::Wallet * wallet2 = wmgr->recoveryWallet(WALLET_NAME, seed1);
ASSERT_TRUE(wallet2->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet2->seed() == seed1);
ASSERT_TRUE(wallet2->address() == address1);
ASSERT_TRUE(wmgr->closeWallet(wallet2));
}
TEST_F(WalletManagerTest, WalletManagerStoresWallet1)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
std::string address1 = wallet1->address();
ASSERT_TRUE(wallet1->store(""));
ASSERT_TRUE(wallet1->store(WALLET_NAME_COPY));
ASSERT_TRUE(wmgr->closeWallet(wallet1));
Bitmonero::Wallet * wallet2 = wmgr->openWallet(WALLET_NAME_COPY, WALLET_PASS);
ASSERT_TRUE(wallet2->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet2->seed() == seed1);
ASSERT_TRUE(wallet2->address() == address1);
ASSERT_TRUE(wmgr->closeWallet(wallet2));
}
TEST_F(WalletManagerTest, WalletManagerStoresWallet2)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
std::string address1 = wallet1->address();
ASSERT_TRUE(wallet1->store(WALLET_NAME_WITH_DIR));
ASSERT_TRUE(wmgr->closeWallet(wallet1));
wallet1 = wmgr->openWallet(WALLET_NAME_WITH_DIR, WALLET_PASS);
ASSERT_TRUE(wallet1->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet1->seed() == seed1);
ASSERT_TRUE(wallet1->address() == address1);
ASSERT_TRUE(wmgr->closeWallet(wallet1));
}
TEST_F(WalletManagerTest, WalletManagerStoresWallet3)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
std::string address1 = wallet1->address();
ASSERT_FALSE(wallet1->store(WALLET_NAME_WITH_DIR_NON_WRITABLE));
ASSERT_TRUE(wmgr->closeWallet(wallet1));
wallet1 = wmgr->openWallet(WALLET_NAME_WITH_DIR_NON_WRITABLE, WALLET_PASS);
ASSERT_FALSE(wallet1->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_FALSE(wmgr->closeWallet(wallet1));
wallet1 = wmgr->openWallet(WALLET_NAME, WALLET_PASS);
ASSERT_TRUE(wallet1->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet1->seed() == seed1);
ASSERT_TRUE(wallet1->address() == address1);
ASSERT_TRUE(wmgr->closeWallet(wallet1));
}
TEST_F(WalletManagerTest, WalletManagerStoresWallet4)
{
Bitmonero::Wallet * wallet1 = wmgr->createWallet(WALLET_NAME, WALLET_PASS, WALLET_LANG);
std::string seed1 = wallet1->seed();
std::string address1 = wallet1->address();
ASSERT_TRUE(wallet1->store(""));
ASSERT_TRUE(wallet1->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet1->store(""));
ASSERT_TRUE(wallet1->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wmgr->closeWallet(wallet1));
wallet1 = wmgr->openWallet(WALLET_NAME, WALLET_PASS);
ASSERT_TRUE(wallet1->status() == Bitmonero::Wallet::Status_Ok);
ASSERT_TRUE(wallet1->seed() == seed1);
ASSERT_TRUE(wallet1->address() == address1);
ASSERT_TRUE(wmgr->closeWallet(wallet1));
}
*/
TEST_F(WalletManagerTest, WalletManagerFindsWallet)
{
std::vector<std::string> wallets = wmgr->findWallets(WALLETS_ROOT_DIR);
ASSERT_FALSE(wallets.empty());
std::cout << "Found wallets: " << std::endl;
for (auto wallet_path: wallets) {
std::cout << wallet_path << std::endl;
}
}
TEST_F(WalletTest1, WalletShowsBalance)
{
// TODO: temporary disabled;
return;
Bitmonero::Wallet * wallet1 = wmgr->openWallet(CURRENT_SRC_WALLET, TESTNET_WALLET_PASS, true);
ASSERT_TRUE(wallet1->balance() > 0);
ASSERT_TRUE(wallet1->unlockedBalance() > 0);
uint64_t balance1 = wallet1->balance();
uint64_t unlockedBalance1 = wallet1->unlockedBalance();
ASSERT_TRUE(wmgr->closeWallet(wallet1));
Bitmonero::Wallet * wallet2 = wmgr->openWallet(CURRENT_SRC_WALLET, TESTNET_WALLET_PASS, true);
ASSERT_TRUE(balance1 == wallet2->balance());
std::cout << "wallet balance: " << wallet2->balance() << std::endl;
ASSERT_TRUE(unlockedBalance1 == wallet2->unlockedBalance());
std::cout << "wallet unlocked balance: " << wallet2->unlockedBalance() << std::endl;
ASSERT_TRUE(wmgr->closeWallet(wallet2));
}
TEST_F(WalletTest1, WalletRefresh)
{
Bitmonero::Wallet * wallet1 = wmgr->openWallet(CURRENT_SRC_WALLET, TESTNET_WALLET_PASS, true);
// make sure testnet daemon is running
ASSERT_TRUE(wallet1->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet1->refresh());
ASSERT_TRUE(wmgr->closeWallet(wallet1));
}
TEST_F(WalletTest1, WalletTransaction)
{
Bitmonero::Wallet * wallet1 = wmgr->openWallet(CURRENT_SRC_WALLET, TESTNET_WALLET_PASS, true);
// make sure testnet daemon is running
ASSERT_TRUE(wallet1->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet1->refresh());
uint64_t balance = wallet1->balance();
ASSERT_TRUE(wallet1->status() == Bitmonero::PendingTransaction::Status_Ok);
std::string recepient_address = Utils::get_wallet_address(CURRENT_DST_WALLET, TESTNET_WALLET_PASS);
Bitmonero::PendingTransaction * transaction = wallet1->createTransaction(
recepient_address, AMOUNT_10XMR);
ASSERT_TRUE(transaction->status() == Bitmonero::PendingTransaction::Status_Ok);
wallet1->refresh();
ASSERT_TRUE(wallet1->balance() == balance);
ASSERT_TRUE(transaction->amount() == AMOUNT_10XMR);
ASSERT_TRUE(transaction->commit());
ASSERT_FALSE(wallet1->balance() == balance);
ASSERT_TRUE(wmgr->closeWallet(wallet1));
}
TEST_F(WalletTest1, WalletHistory)
{
Bitmonero::Wallet * wallet1 = wmgr->openWallet(CURRENT_SRC_WALLET, TESTNET_WALLET_PASS, true);
// make sure testnet daemon is running
ASSERT_TRUE(wallet1->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet1->refresh());
Bitmonero::TransactionHistory * history = wallet1->history();
history->refresh();
ASSERT_TRUE(history->count() > 0);
for (auto t: history->getAll()) {
ASSERT_TRUE(t != nullptr);
Utils::print_transaction(t);
}
}
TEST_F(WalletTest1, WalletTransactionAndHistory)
{
return;
Bitmonero::Wallet * wallet_src = wmgr->openWallet(CURRENT_SRC_WALLET, TESTNET_WALLET_PASS, true);
// make sure testnet daemon is running
ASSERT_TRUE(wallet_src->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet_src->refresh());
Bitmonero::TransactionHistory * history = wallet_src->history();
history->refresh();
ASSERT_TRUE(history->count() > 0);
size_t count1 = history->count();
std::cout << "**** Transactions before transfer (" << count1 << ")" << std::endl;
for (auto t: history->getAll()) {
ASSERT_TRUE(t != nullptr);
Utils::print_transaction(t);
}
std::string wallet4_addr = Utils::get_wallet_address(CURRENT_DST_WALLET, TESTNET_WALLET_PASS);
Bitmonero::PendingTransaction * tx = wallet_src->createTransaction(wallet4_addr, AMOUNT_10XMR * 5);
ASSERT_TRUE(tx->status() == Bitmonero::PendingTransaction::Status_Ok);
ASSERT_TRUE(tx->commit());
history = wallet_src->history();
history->refresh();
ASSERT_TRUE(count1 != history->count());
std::cout << "**** Transactions after transfer (" << history->count() << ")" << std::endl;
for (auto t: history->getAll()) {
ASSERT_TRUE(t != nullptr);
Utils::print_transaction(t);
}
}
struct MyWalletListener : public Bitmonero::WalletListener
{
Bitmonero::Wallet * wallet;
uint64_t total_tx;
uint64_t total_rx;
std::timed_mutex guard;
MyWalletListener(Bitmonero::Wallet * wallet)
: total_tx(0), total_rx(0)
{
this->wallet = wallet;
this->wallet->setListener(this);
}
virtual void moneySpent(const string &txId, uint64_t amount)
{
std::cout << "wallet: " << wallet->address() << " just spent money ("
<< txId << ", " << wallet->displayAmount(amount) << ")" << std::endl;
total_tx += amount;
guard.unlock();
}
virtual void moneyReceived(const string &txId, uint64_t amount)
{
std::cout << "wallet: " << wallet->address() << " just received money ("
<< txId << ", " << wallet->displayAmount(amount) << ")" << std::endl;
total_rx += amount;
guard.unlock();
}
};
/*
TEST_F(WalletTest2, WalletCallbackSent)
{
Bitmonero::Wallet * wallet_src = wmgr->openWallet(TESTNET_WALLET3_NAME, TESTNET_WALLET_PASS, true);
// make sure testnet daemon is running
ASSERT_TRUE(wallet_src->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet_src->refresh());
MyWalletListener * wallet_src_listener = new MyWalletListener(wallet_src);
std::cout << "** Balance: " << wallet_src->displayAmount(wallet_src->balance()) << std::endl;
uint64_t amount = AMOUNT_10XMR * 5;
std::cout << "** Sending " << Bitmonero::Wallet::displayAmount(amount) << " to " << TESTNET_WALLET4_ADDRESS;
Bitmonero::PendingTransaction * tx = wallet_src->createTransaction(TESTNET_WALLET4_ADDRESS, AMOUNT_1XMR * 5);
ASSERT_TRUE(tx->status() == Bitmonero::PendingTransaction::Status_Ok);
ASSERT_TRUE(tx->commit());
std::chrono::seconds wait_for = std::chrono::seconds(60*3);
wallet_src_listener->guard.lock();
wallet_src_listener->guard.try_lock_for(wait_for);
ASSERT_TRUE(wallet_src_listener->total_tx != 0);
}
*/
/*
TEST_F(WalletTest2, WalletCallbackReceived)
{
Bitmonero::Wallet * wallet_src = wmgr->openWallet(TESTNET_WALLET3_NAME, TESTNET_WALLET_PASS, true);
// make sure testnet daemon is running
ASSERT_TRUE(wallet_src->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet_src->refresh());
std::cout << "** Balance: " << wallet_src->displayAmount(wallet_src->balance()) << std::endl;
Bitmonero::Wallet * wallet_dst = wmgr->openWallet(TESTNET_WALLET4_NAME, TESTNET_WALLET_PASS, true);
ASSERT_TRUE(wallet_dst->init(TESTNET_DAEMON_ADDRESS, 0));
ASSERT_TRUE(wallet_dst->refresh());
MyWalletListener * wallet_dst_listener = new MyWalletListener(wallet_dst);
uint64_t amount = AMOUNT_1XMR * 5;
std::cout << "** Sending " << Bitmonero::Wallet::displayAmount(amount) << " to " << TESTNET_WALLET4_ADDRESS;
Bitmonero::PendingTransaction * tx = wallet_src->createTransaction(TESTNET_WALLET4_ADDRESS, AMOUNT_1XMR * 5);
ASSERT_TRUE(tx->status() == Bitmonero::PendingTransaction::Status_Ok);
ASSERT_TRUE(tx->commit());
std::chrono::seconds wait_for = std::chrono::seconds(60*4);
wallet_dst_listener->guard.lock();
wallet_dst_listener->guard.try_lock_for(wait_for);
ASSERT_TRUE(wallet_dst_listener->total_tx != 0);
}
*/
int main(int argc, char** argv)
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}