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https://github.com/pocoproject/poco.git
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initial import
This commit is contained in:
Guenter Obiltschnig
505
Util/src/ServerApplication.cpp
Normal file
505
Util/src/ServerApplication.cpp
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//
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// ServerApplication.cpp
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//
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// $Id: //poco/1.1.0/Util/src/ServerApplication.cpp#2 $
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//
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// Library: Util
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// Package: Application
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// Module: ServerApplication
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Util/ServerApplication.h"
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#include "Util/Option.h"
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#include "Util/OptionSet.h"
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#include "Foundation/Exception.h"
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#include "Foundation/Process.h"
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#include "Foundation/NumberFormatter.h"
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#include "Foundation/NamedEvent.h"
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#include "Foundation/Logger.h"
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#if defined(POCO_OS_FAMILY_UNIX)
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <signal.h>
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#include <sys/stat.h>
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#elif defined(POCO_OS_FAMILY_WINDOWS)
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#include "Util/WinService.h"
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#include <windows.h>
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#include <string.h>
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#endif
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using Foundation::NamedEvent;
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using Foundation::Process;
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using Foundation::NumberFormatter;
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using Foundation::Exception;
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using Foundation::SystemException;
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Util_BEGIN
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#if defined(POCO_OS_FAMILY_WINDOWS)
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Foundation::Event ServerApplication::_terminated;
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SERVICE_STATUS ServerApplication::_serviceStatus;
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SERVICE_STATUS_HANDLE ServerApplication::_serviceStatusHandle = 0;
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#endif
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ServerApplication::ServerApplication()
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{
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#if defined(POCO_OS_FAMILY_WINDOWS)
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_action = SRV_RUN;
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memset(&_serviceStatus, 0, sizeof(_serviceStatus));
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#endif
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}
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ServerApplication::~ServerApplication()
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{
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}
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bool ServerApplication::isInteractive() const
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{
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bool runsInBackground = config().getBool("application.runAsDaemon", false) || config().getBool("application.runAsService", false);
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return !runsInBackground;
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}
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int ServerApplication::run()
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{
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return Application::run();
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}
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void ServerApplication::terminate()
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{
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Process::requestTermination(Process::id());
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}
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#if defined(POCO_OS_FAMILY_WINDOWS)
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//
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// Windows specific code
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//
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BOOL ServerApplication::ConsoleCtrlHandler(DWORD ctrlType)
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{
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switch (ctrlType)
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{
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case CTRL_C_EVENT:
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case CTRL_CLOSE_EVENT:
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case CTRL_BREAK_EVENT:
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terminate();
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return _terminated.tryWait(10000) ? TRUE : FALSE;
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default:
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return FALSE;
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}
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}
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void ServerApplication::ServiceControlHandler(DWORD control)
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{
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switch (control)
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{
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case SERVICE_CONTROL_STOP:
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case SERVICE_CONTROL_SHUTDOWN:
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terminate();
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_serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
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break;
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case SERVICE_CONTROL_INTERROGATE:
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break;
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}
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SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
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}
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void ServerApplication::ServiceMain(DWORD argc, LPTSTR* argv)
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{
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ServerApplication& app = static_cast<ServerApplication&>(Application::instance());
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_serviceStatusHandle = RegisterServiceCtrlHandler("", ServiceControlHandler);
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if (!_serviceStatusHandle)
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throw SystemException("cannot register service control handler");
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_serviceStatus.dwServiceType = SERVICE_WIN32;
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_serviceStatus.dwCurrentState = SERVICE_START_PENDING;
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_serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
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_serviceStatus.dwWin32ExitCode = 0;
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_serviceStatus.dwServiceSpecificExitCode = 0;
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_serviceStatus.dwCheckPoint = 0;
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_serviceStatus.dwWaitHint = 0;
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SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
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try
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{
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app.init(argc, argv);
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_serviceStatus.dwCurrentState = SERVICE_RUNNING;
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SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
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int rc = app.run();
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_serviceStatus.dwWin32ExitCode = rc ? ERROR_SERVICE_SPECIFIC_ERROR : 0;
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_serviceStatus.dwServiceSpecificExitCode = rc;
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}
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catch (Exception& exc)
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{
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app.logger().log(exc);
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_serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
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_serviceStatus.dwServiceSpecificExitCode = EXIT_CONFIG;
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}
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catch (...)
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{
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app.logger().error("fatal error - aborting");
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_serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
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_serviceStatus.dwServiceSpecificExitCode = EXIT_SOFTWARE;
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}
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try
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{
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app.uninitialize();
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}
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catch (...)
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{
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}
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_serviceStatus.dwCurrentState = SERVICE_STOPPED;
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SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
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}
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void ServerApplication::waitForTerminationRequest()
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{
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SetConsoleCtrlHandler(ConsoleCtrlHandler, TRUE);
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std::string evName("POCOTRM");
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evName.append(NumberFormatter::formatHex(Process::id(), 8));
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NamedEvent ev(evName);
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ev.wait();
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_terminated.set();
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}
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int ServerApplication::run(int argc, char** argv)
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{
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if (!hasConsole() && isService())
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{
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config().setBool("application.runAsService", true);
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return 0;
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}
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else
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{
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int rc = EXIT_OK;
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try
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{
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init(argc, argv);
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switch (_action)
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{
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case SRV_REGISTER:
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registerService();
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rc = EXIT_OK;
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break;
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case SRV_UNREGISTER:
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unregisterService();
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rc = EXIT_OK;
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break;
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default:
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rc = run();
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uninitialize();
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}
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}
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catch (Exception& exc)
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{
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logger().log(exc);
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rc = EXIT_SOFTWARE;
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}
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return rc;
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}
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}
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bool ServerApplication::isService()
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{
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SERVICE_TABLE_ENTRY svcDispatchTable[2];
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svcDispatchTable[0].lpServiceName = "";
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svcDispatchTable[0].lpServiceProc = ServiceMain;
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svcDispatchTable[1].lpServiceName = NULL;
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svcDispatchTable[1].lpServiceProc = NULL;
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return StartServiceCtrlDispatcher(svcDispatchTable) != 0;
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}
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bool ServerApplication::hasConsole()
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{
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HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
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return hStdOut != INVALID_HANDLE_VALUE && hStdOut != NULL;
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}
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void ServerApplication::registerService()
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{
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std::string name = config().getString("application.baseName");
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std::string path = config().getString("application.path");
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WinService service(name);
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if (_displayName.empty())
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service.registerService(path);
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else
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service.registerService(path, _displayName);
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logger().information("The application has been successfully registered as a service");
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}
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void ServerApplication::unregisterService()
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{
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std::string name = config().getString("application.baseName");
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WinService service(name);
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service.unregisterService();
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logger().information("The service has been successfully unregistered");
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}
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void ServerApplication::defineOptions(OptionSet& options)
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{
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Application::defineOptions(options);
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options.addOption(
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Option("registerService", "", "register application as a service")
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.required(false)
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.repeatable(false));
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options.addOption(
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Option("unregisterService", "", "unregister application as a service")
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.required(false)
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.repeatable(false));
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options.addOption(
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Option("displayName", "", "specify a display name for the service (only with /registerService)")
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.required(false)
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.repeatable(false)
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.argument("name"));
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}
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void ServerApplication::handleOption(const std::string& name, const std::string& value)
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{
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if (name == "registerService")
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_action = SRV_REGISTER;
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else if (name == "unregisterService")
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_action = SRV_UNREGISTER;
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else if (name == "displayName")
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_displayName = value;
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}
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#elif defined(POCO_OS_FAMILY_UNIX)
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//
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// Unix specific code
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//
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void ServerApplication::waitForTerminationRequest()
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{
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sigset_t sset;
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sigemptyset(&sset);
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sigaddset(&sset, SIGINT);
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sigaddset(&sset, SIGQUIT);
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sigaddset(&sset, SIGTERM);
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sigprocmask(SIG_BLOCK, &sset, NULL);
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int sig;
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sigwait(&sset, &sig);
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}
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int ServerApplication::run(int argc, char** argv)
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{
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if (isDaemon(argc, argv))
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{
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beDaemon();
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}
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try
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{
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init(argc, argv);
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chdir("/");
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}
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catch (Exception& exc)
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{
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logger().log(exc);
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return EXIT_CONFIG;
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}
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int rc = run();
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try
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{
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uninitialize();
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}
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catch (Exception& exc)
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{
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logger().log(exc);
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rc = EXIT_CONFIG;
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}
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return rc;
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}
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bool ServerApplication::isDaemon(int argc, char** argv)
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{
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std::string option("--daemon");
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for (int i = 1; i < argc; ++i)
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{
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if (option == argv[i])
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return true;
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}
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return false;
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}
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void ServerApplication::beDaemon()
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{
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pid_t pid;
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if ((pid = fork()) < 0)
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throw SystemException("cannot fork daemon process");
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else if (pid != 0)
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exit(0);
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setsid();
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umask(0);
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close(0);
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close(1);
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close(2);
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}
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void ServerApplication::defineOptions(OptionSet& options)
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{
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Application::defineOptions(options);
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options.addOption(
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Option("daemon", "", "run application as a daemon")
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.required(false)
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.repeatable(false));
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}
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void ServerApplication::handleOption(const std::string& name, const std::string& value)
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{
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if (name == "daemon")
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{
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config().setBool("application.runAsDaemon", true);
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}
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}
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#elif defined(POCO_OS_FAMILY_VMS)
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//
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// VMS specific code
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//
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namespace
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{
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static void handleSignal(int sig)
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{
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ServerApplication::terminate();
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}
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}
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void ServerApplication::waitForTerminationRequest()
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{
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struct sigaction handler;
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handler.sa_handler = handleSignal;
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handler.sa_flags = 0;
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sigemptyset(&handler.sa_mask);
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sigaction(SIGINT, &handler, NULL);
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sigaction(SIGQUIT, &handler, NULL);
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long ctrlY = LIB$M_CLI_CTRLY;
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unsigned short ioChan;
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$DESCRIPTOR(ttDsc, "TT:");
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lib$disable_ctrl(&ctrlY);
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sys$assign(&ttDsc, &ioChan, 0, 0);
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sys$qiow(0, ioChan, IO$_SETMODE | IO$M_CTRLYAST, 0, 0, 0, terminate, 0, 0, 0, 0, 0);
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sys$qiow(0, ioChan, IO$_SETMODE | IO$M_CTRLCAST, 0, 0, 0, terminate, 0, 0, 0, 0, 0);
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std::string evName("POCOTRM");
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evName.append(NumberFormatter::formatHex(Process::id(), 8));
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NamedEvent ev(evName);
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try
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{
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ev.wait();
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}
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catch (...)
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{
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// CTRL-C will cause an exception to be raised
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}
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sys$dassgn(ioChan);
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lib$enable_ctrl(&ctrlY);
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}
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int ServerApplication::run(int argc, char** argv)
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{
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try
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{
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init(argc, argv);
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}
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catch (Exception& exc)
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{
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logger().log(exc);
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return EXIT_CONFIG;
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}
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int rc = run();
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try
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{
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uninitialize();
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}
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catch (Exception& exc)
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{
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logger().log(exc);
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rc = EXIT_CONFIG;
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}
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return rc;
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}
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void ServerApplication::defineOptions(OptionSet& options)
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{
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Application::defineOptions(options);
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}
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void ServerApplication::handleOption(const std::string& name, const std::string& value)
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{
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}
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#endif
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Util_END
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