mirror of
https://codeberg.org/anoncontributorxmr/monero.git
synced 2024-11-10 21:23:27 +01:00
Optionally query moneropulse DNS records to check for updates
It just checks and prints a message if there is a new version for now.
This commit is contained in:
moneromooo-monero
parent
e3cae4ae2e
commit
f640512c53
@ -88,6 +88,14 @@ else()
|
||||
set(OPT_FLAGS_RELEASE "-Ofast")
|
||||
endif()
|
||||
|
||||
# BUILD_TAG is used to select the build type to check for a new version
|
||||
if(BUILD_TAG)
|
||||
message(STATUS "Building build tag ${BUILD_TAG}")
|
||||
add_definitions("-DBUILD_TAG=${BUILD_TAG}")
|
||||
else()
|
||||
message(STATUS "Building without build tag")
|
||||
endif()
|
||||
|
||||
set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG ${OPT_FLAGS_RELEASE}")
|
||||
set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${OPT_FLAGS_RELEASE}")
|
||||
|
||||
|
||||
44
Makefile
44
Makefile
@ -58,43 +58,55 @@ release-all:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D BUILD_TESTS=ON -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
|
||||
release-static:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
|
||||
coverage:
|
||||
mkdir -p build/debug
|
||||
cd build/debug && cmake -D BUILD_TESTS=ON -D CMAKE_BUILD_TYPE=Debug -D COVERAGE=ON ../.. && $(MAKE) && $(MAKE) test
|
||||
|
||||
release-static-armv6:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv6zk" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
# Targets for specific prebuilt builds which will be advertised for updates by their build tag
|
||||
|
||||
release-static-armv7:
|
||||
release-static-linux-armv6:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv6zk" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="linux-armv6" ../.. && $(MAKE)
|
||||
|
||||
release-static-linux-armv7:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="linux-armv7" ../.. && $(MAKE)
|
||||
|
||||
release-static-android:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D ANDROID=true -D INSTALL_VENDORED_LIBUNBOUND=ON ../.. && $(MAKE)
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D ANDROID=true -D INSTALL_VENDORED_LIBUNBOUND=ON -D BUILD_TAG="android"../.. && $(MAKE)
|
||||
|
||||
release-static-armv8:
|
||||
release-static-linux-armv8:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv8-a" -D STATIC=ON -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
cd build/release && cmake -D BUILD_TESTS=OFF -D ARCH="armv8-a" -D STATIC=ON -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="linux-armv8" ../.. && $(MAKE)
|
||||
|
||||
release-static: release-static-64
|
||||
|
||||
release-static-64:
|
||||
release-static-linux-x86_64:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="linux-x64" ../.. && $(MAKE)
|
||||
|
||||
release-static-32:
|
||||
release-static-freebsd-x86_64:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="i686" -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release ../.. && $(MAKE)
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="freebsd-x64" ../.. && $(MAKE)
|
||||
|
||||
release-static-freebsd-x86_64:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="mac-x64" ../.. && $(MAKE)
|
||||
|
||||
release-static-linux-i686:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -D STATIC=ON -D ARCH="i686" -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D BUILD_TAG="linux-x86" ../.. && $(MAKE)
|
||||
|
||||
release-static-win64:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -G "MSYS Makefiles" -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=Release -D CMAKE_TOOLCHAIN_FILE=../../cmake/64-bit-toolchain.cmake -D MSYS2_FOLDER=c:/msys64 ../.. && $(MAKE)
|
||||
cd build/release && cmake -G "MSYS Makefiles" -D STATIC=ON -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_BUILD_TYPE=Release -D BUILD_TAG="win-x64" -D CMAKE_TOOLCHAIN_FILE=../../cmake/64-bit-toolchain.cmake -D MSYS2_FOLDER=c:/msys64 ../.. && $(MAKE)
|
||||
|
||||
release-static-win32:
|
||||
mkdir -p build/release
|
||||
cd build/release && cmake -G "MSYS Makefiles" -D STATIC=ON -D ARCH="i686" -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=Release -D CMAKE_TOOLCHAIN_FILE=../../cmake/32-bit-toolchain.cmake -D MSYS2_FOLDER=c:/msys32 ../.. && $(MAKE)
|
||||
cd build/release && cmake -G "MSYS Makefiles" -D STATIC=ON -D ARCH="i686" -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=Release -D BUILD_TAG="win-x32" -D CMAKE_TOOLCHAIN_FILE=../../cmake/32-bit-toolchain.cmake -D MSYS2_FOLDER=c:/msys32 ../.. && $(MAKE)
|
||||
|
||||
clean:
|
||||
@echo "WARNING: Back-up your wallet if it exists within ./build!" ; \
|
||||
|
||||
@ -35,7 +35,8 @@ set(common_sources
|
||||
password.cpp
|
||||
perf_timer.cpp
|
||||
task_region.cpp
|
||||
thread_group.cpp)
|
||||
thread_group.cpp
|
||||
updates.cpp)
|
||||
|
||||
if (STACK_TRACE)
|
||||
list(APPEND common_sources stack_trace.cpp)
|
||||
@ -62,7 +63,8 @@ set(common_private_headers
|
||||
perf_timer.h
|
||||
stack_trace.h
|
||||
task_region.h
|
||||
thread_group.h)
|
||||
thread_group.h
|
||||
updates.h)
|
||||
|
||||
monero_private_headers(common
|
||||
${common_private_headers})
|
||||
|
||||
@ -120,4 +120,9 @@ namespace command_line
|
||||
, "How many blocks to sync at once during chain synchronization."
|
||||
, BLOCKS_SYNCHRONIZING_DEFAULT_COUNT
|
||||
};
|
||||
const command_line::arg_descriptor<std::string> arg_check_updates = {
|
||||
"check-updates"
|
||||
, "Check for new versions of monero: [disabled|notify|download|update]"
|
||||
, "notify"
|
||||
};
|
||||
}
|
||||
|
||||
@ -218,4 +218,5 @@ namespace command_line
|
||||
extern const arg_descriptor<uint64_t> arg_prep_blocks_threads;
|
||||
extern const arg_descriptor<uint64_t> arg_show_time_stats;
|
||||
extern const arg_descriptor<size_t> arg_block_sync_size;
|
||||
extern const arg_descriptor<std::string> arg_check_updates;
|
||||
}
|
||||
|
||||
114
src/common/updates.cpp
Normal file
114
src/common/updates.cpp
Normal file
@ -0,0 +1,114 @@
|
||||
// Copyright (c) 2017, 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 "util.h"
|
||||
#include "dns_utils.h"
|
||||
#include "updates.h"
|
||||
|
||||
#undef MONERO_DEFAULT_LOG_CATEGORY
|
||||
#define MONERO_DEFAULT_LOG_CATEGORY "updates"
|
||||
|
||||
namespace tools
|
||||
{
|
||||
bool check_updates(const std::string &software, const std::string &buildtag, bool testnet, std::string &version, std::string &hash)
|
||||
{
|
||||
std::vector<std::string> records;
|
||||
bool found = false;
|
||||
|
||||
MDEBUG("Checking updates for " << buildtag << " " << software);
|
||||
|
||||
// All four MoneroPulse domains have DNSSEC on and valid
|
||||
static const std::vector<std::string> dns_urls = {
|
||||
};
|
||||
|
||||
static const std::vector<std::string> testnet_dns_urls = { "testver.moneropulse.net"
|
||||
};
|
||||
|
||||
if (!tools::dns_utils::load_txt_records_from_dns(records, testnet ? testnet_dns_urls : dns_urls))
|
||||
return false;
|
||||
|
||||
for (const auto& record : records)
|
||||
{
|
||||
std::vector<std::string> fields;
|
||||
boost::split(fields, record, boost::is_any_of(":"));
|
||||
if (fields.size() != 4)
|
||||
{
|
||||
MWARNING("Updates record does not have 4 fields: " << record);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (software != fields[0] || buildtag != fields[1])
|
||||
continue;
|
||||
|
||||
bool alnum = true;
|
||||
for (auto c: hash)
|
||||
if (!isalnum(c))
|
||||
alnum = false;
|
||||
if (hash.size() != 64 && !alnum)
|
||||
{
|
||||
MWARNING("Invalid hash: " << hash);
|
||||
continue;
|
||||
}
|
||||
|
||||
// use highest version
|
||||
if (found)
|
||||
{
|
||||
int cmp = vercmp(version.c_str(), fields[2].c_str());
|
||||
if (cmp > 0)
|
||||
continue;
|
||||
if (cmp == 0 && hash != fields[3])
|
||||
MWARNING("Two matches found for " << software << " version " << version << " on " << buildtag);
|
||||
}
|
||||
|
||||
version = fields[2];
|
||||
hash = fields[3];
|
||||
|
||||
MINFO("Found new version " << version << " with hash " << hash);
|
||||
found = true;
|
||||
}
|
||||
return found;
|
||||
}
|
||||
|
||||
std::string get_update_url(const std::string &software, const std::string &subdir, const std::string &buildtag, const std::string &version)
|
||||
{
|
||||
static const char base[] = "https://downloads.getmonero.org/";
|
||||
#ifdef _WIN32
|
||||
static const char extension[] = ".zip";
|
||||
#else
|
||||
static const char extension[] = ".tar.bz2";
|
||||
#endif
|
||||
|
||||
std::string url;
|
||||
|
||||
url = base;
|
||||
if (!subdir.empty())
|
||||
url += subdir + "/";
|
||||
url = url + software + "-" + buildtag + "-v" + version + extension;
|
||||
return url;
|
||||
}
|
||||
}
|
||||
37
src/common/updates.h
Normal file
37
src/common/updates.h
Normal file
@ -0,0 +1,37 @@
|
||||
// Copyright (c) 2017, 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.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <string>
|
||||
|
||||
namespace tools
|
||||
{
|
||||
bool check_updates(const std::string &software, const std::string &buildtag, bool bestnet, std::string &version, std::string &hash);
|
||||
std::string get_update_url(const std::string &software, const std::string &subdir, const std::string &buildtag, const std::string &version);
|
||||
}
|
||||
@ -35,6 +35,7 @@ using namespace epee;
|
||||
#include "cryptonote_core.h"
|
||||
#include "common/command_line.h"
|
||||
#include "common/util.h"
|
||||
#include "common/updates.h"
|
||||
#include "warnings.h"
|
||||
#include "crypto/crypto.h"
|
||||
#include "cryptonote_config.h"
|
||||
@ -148,6 +149,7 @@ namespace cryptonote
|
||||
command_line::add_arg(desc, command_line::arg_db_sync_mode);
|
||||
command_line::add_arg(desc, command_line::arg_show_time_stats);
|
||||
command_line::add_arg(desc, command_line::arg_block_sync_size);
|
||||
command_line::add_arg(desc, command_line::arg_check_updates);
|
||||
}
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
bool core::handle_command_line(const boost::program_options::variables_map& vm)
|
||||
@ -242,6 +244,7 @@ namespace cryptonote
|
||||
std::string db_sync_mode = command_line::get_arg(vm, command_line::arg_db_sync_mode);
|
||||
bool fast_sync = command_line::get_arg(vm, command_line::arg_fast_block_sync) != 0;
|
||||
uint64_t blocks_threads = command_line::get_arg(vm, command_line::arg_prep_blocks_threads);
|
||||
std::string check_updates_string = command_line::get_arg(vm, command_line::arg_check_updates);
|
||||
|
||||
boost::filesystem::path folder(m_config_folder);
|
||||
if (m_fakechain)
|
||||
@ -379,6 +382,20 @@ namespace cryptonote
|
||||
// with respect to what blocks we already have
|
||||
CHECK_AND_ASSERT_MES(update_checkpoints(), false, "One or more checkpoints loaded from json or dns conflicted with existing checkpoints.");
|
||||
|
||||
// DNS versions checking
|
||||
if (check_updates_string == "disabled")
|
||||
check_updates_level = UPDATES_DISABLED;
|
||||
else if (check_updates_string == "notify")
|
||||
check_updates_level = UPDATES_NOTIFY;
|
||||
else if (check_updates_string == "download")
|
||||
check_updates_level = UPDATES_DOWNLOAD;
|
||||
else if (check_updates_string == "update")
|
||||
check_updates_level = UPDATES_UPDATE;
|
||||
else {
|
||||
MERROR("Invalid argument to --dns-versions-check: " << check_updates_string);
|
||||
return false;
|
||||
}
|
||||
|
||||
r = m_miner.init(vm, m_testnet);
|
||||
CHECK_AND_ASSERT_MES(r, false, "Failed to initialize miner instance");
|
||||
|
||||
@ -1000,6 +1017,7 @@ namespace cryptonote
|
||||
|
||||
m_fork_moaner.do_call(boost::bind(&core::check_fork_time, this));
|
||||
m_txpool_auto_relayer.do_call(boost::bind(&core::relay_txpool_transactions, this));
|
||||
m_check_updates_interval.do_call(boost::bind(&core::check_updates, this));
|
||||
m_miner.on_idle();
|
||||
m_mempool.on_idle();
|
||||
return true;
|
||||
@ -1027,6 +1045,37 @@ namespace cryptonote
|
||||
return true;
|
||||
}
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
bool core::check_updates()
|
||||
{
|
||||
static const char software[] = "monerod";
|
||||
static const char subdir[] = "cli"; // because it can never be simple
|
||||
#ifdef BUILD_TAG
|
||||
static const char buildtag[] = BOOST_PP_STRINGIZE(BUILD_TAG);
|
||||
#else
|
||||
static const char buildtag[] = "source";
|
||||
#endif
|
||||
|
||||
if (check_updates_level == UPDATES_DISABLED)
|
||||
return true;
|
||||
|
||||
std::string version, hash;
|
||||
MDEBUG("Checking for a new " << software << " version for " << buildtag);
|
||||
if (!tools::check_updates(software, buildtag, m_testnet, version, hash))
|
||||
return false;
|
||||
|
||||
if (tools::vercmp(version.c_str(), MONERO_VERSION) <= 0)
|
||||
return true;
|
||||
|
||||
std::string url = tools::get_update_url(software, subdir, buildtag, version);
|
||||
MGINFO("Version " << version << " of " << software << " for " << buildtag << " is available: " << url << ", SHA256 hash " << hash);
|
||||
|
||||
if (check_updates_level == UPDATES_NOTIFY)
|
||||
return true;
|
||||
|
||||
MERROR("Download/update not implemented yet");
|
||||
return true;
|
||||
}
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
void core::set_target_blockchain_height(uint64_t target_blockchain_height)
|
||||
{
|
||||
m_target_blockchain_height = target_blockchain_height;
|
||||
|
||||
@ -763,6 +763,13 @@ namespace cryptonote
|
||||
*/
|
||||
bool relay_txpool_transactions();
|
||||
|
||||
/**
|
||||
* @brief checks DNS versions
|
||||
*
|
||||
* @return true on success, false otherwise
|
||||
*/
|
||||
bool check_updates();
|
||||
|
||||
bool m_test_drop_download = true; //!< whether or not to drop incoming blocks (for testing)
|
||||
|
||||
uint64_t m_test_drop_download_height = 0; //!< height under which to drop incoming blocks, if doing so
|
||||
@ -785,6 +792,7 @@ namespace cryptonote
|
||||
epee::math_helper::once_a_time_seconds<60*60*12, false> m_store_blockchain_interval; //!< interval for manual storing of Blockchain, if enabled
|
||||
epee::math_helper::once_a_time_seconds<60*60*2, true> m_fork_moaner; //!< interval for checking HardFork status
|
||||
epee::math_helper::once_a_time_seconds<60*2, false> m_txpool_auto_relayer; //!< interval for checking re-relaying txpool transactions
|
||||
epee::math_helper::once_a_time_seconds<60*60*12, true> m_check_updates_interval; //!< interval for checking for new versions
|
||||
|
||||
friend class tx_validate_inputs;
|
||||
std::atomic<bool> m_starter_message_showed; //!< has the "daemon will sync now" message been shown?
|
||||
@ -808,6 +816,13 @@ namespace cryptonote
|
||||
time_t start_time;
|
||||
|
||||
std::unordered_set<crypto::hash> bad_semantics_txes;
|
||||
|
||||
enum {
|
||||
UPDATES_DISABLED,
|
||||
UPDATES_NOTIFY,
|
||||
UPDATES_DOWNLOAD,
|
||||
UPDATES_UPDATE,
|
||||
} check_updates_level;
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user