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// Copyright (c) 2014-2022, 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
#ifdef WIN32
#undef UNICODE
#undef _UNICODE
#include "daemonizer/windows_service.h"
#include <memory>
#include <string>
#include <vector>
#include <windows.h>
namespace windows {
namespace
{
std::vector<char> vecstring(std::string const & str)
{
std::vector<char> result{str.begin(), str.end()};
result.push_back('\0');
return result;
}
}
template <typename T_handler>
class t_service_runner final
{
private:
SERVICE_STATUS_HANDLE m_status_handle{nullptr};
SERVICE_STATUS m_status{};
boost::mutex m_lock{};
std::string m_name;
T_handler m_handler;
static std::unique_ptr<t_service_runner<T_handler>> sp_instance;
public:
t_service_runner(
std::string name
, T_handler handler
)
: m_name{std::move(name)}
, m_handler{std::move(handler)}
{
m_status.dwServiceType = SERVICE_WIN32;
m_status.dwCurrentState = SERVICE_STOPPED;
m_status.dwControlsAccepted = 0;
m_status.dwWin32ExitCode = NO_ERROR;
m_status.dwServiceSpecificExitCode = NO_ERROR;
m_status.dwCheckPoint = 0;
m_status.dwWaitHint = 0;
}
t_service_runner & operator=(t_service_runner && other)
{
if (this != &other)
{
m_status_handle = std::move(other.m_status_handle);
m_status = std::move(other.m_status);
m_name = std::move(other.m_name);
m_handler = std::move(other.m_handler);
}
return *this;
}
static void run(
std::string name
, T_handler handler
)
{
sp_instance.reset(new t_service_runner<T_handler>{
std::move(name)
, std::move(handler)
});
sp_instance->run_();
}
private:
void run_()
{
SERVICE_TABLE_ENTRY table[] =
{
{ vecstring(m_name).data(), &service_main }
, { 0, 0 }
};
StartServiceCtrlDispatcher(table);
}
void report_status(DWORD status)
{
m_status.dwCurrentState = status;
if (status == SERVICE_RUNNING)
{
m_status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
}
else if(status == SERVICE_STOP_PENDING)
{
m_status.dwControlsAccepted = 0;
}
SetServiceStatus(m_status_handle, &m_status);
}
static void WINAPI service_main(DWORD argc, LPSTR * argv)
{
sp_instance->service_main_(argc, argv);
}
void service_main_(DWORD argc, LPSTR * argv)
{
m_status_handle = RegisterServiceCtrlHandler(m_name.c_str(), &on_state_change_request);
if (m_status_handle == nullptr) return;
report_status(SERVICE_START_PENDING);
report_status(SERVICE_RUNNING);
m_handler.run();
on_state_change_request_(SERVICE_CONTROL_STOP);
// Ensure that the service is uninstalled
uninstall_service(m_name);
}
static void WINAPI on_state_change_request(DWORD control_code)
{
sp_instance->on_state_change_request_(control_code);
}
void on_state_change_request_(DWORD control_code)
{
switch (control_code)
{
case SERVICE_CONTROL_INTERROGATE:
break;
case SERVICE_CONTROL_SHUTDOWN:
case SERVICE_CONTROL_STOP:
report_status(SERVICE_STOP_PENDING);
m_handler.stop();
report_status(SERVICE_STOPPED);
break;
case SERVICE_CONTROL_PAUSE:
break;
case SERVICE_CONTROL_CONTINUE:
break;
default:
break;
}
}
};
template <typename T_handler>
std::unique_ptr<t_service_runner<T_handler>> t_service_runner<T_handler>::sp_instance;
}
#endif
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