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//
// ServerApplication.cpp
//
// $Id: //poco/1.4/Util/src/ServerApplication.cpp#6 $
//
// Library: Util
// Package: Application
// Module: ServerApplication
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Util/ServerApplication.h"
#include "Poco/Util/Option.h"
#include "Poco/Util/OptionSet.h"
#include "Poco/Util/OptionException.h"
#include "Poco/Exception.h"
#if !defined(POCO_VXWORKS)
#include "Poco/Process.h"
#include "Poco/NamedEvent.h"
#endif
#include "Poco/NumberFormatter.h"
#include "Poco/Logger.h"
#include "Poco/String.h"
#if defined(POCO_OS_FAMILY_UNIX) && !defined(POCO_VXWORKS)
#include "Poco/TemporaryFile.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#include <sys/stat.h>
#include <fstream>
#elif defined(POCO_OS_FAMILY_WINDOWS)
#if !defined(_WIN32_WCE)
#include "Poco/Util/WinService.h"
#include "Poco/Util/WinRegistryKey.h"
#endif
#include "Poco/UnWindows.h"
#include <cstring>
#endif
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
#include "Poco/UnicodeConverter.h"
#endif
using Poco::NumberFormatter;
using Poco::Exception;
using Poco::SystemException;
namespace Poco {
namespace Util {
#if defined(POCO_OS_FAMILY_WINDOWS)
Poco::NamedEvent ServerApplication::_terminate(Poco::ProcessImpl::terminationEventName(Poco::Process::id()));
#if !defined(_WIN32_WCE)
Poco::Event ServerApplication::_terminated;
SERVICE_STATUS ServerApplication::_serviceStatus;
SERVICE_STATUS_HANDLE ServerApplication::_serviceStatusHandle = 0;
#endif
#endif
#if defined(POCO_VXWORKS) || defined(POCO_ANDROID)
Poco::Event ServerApplication::_terminate;
#endif
ServerApplication::ServerApplication()
{
#if defined(POCO_OS_FAMILY_WINDOWS)
#if !defined(_WIN32_WCE)
_action = SRV_RUN;
std::memset(&_serviceStatus, 0, sizeof(_serviceStatus));
#endif
#endif
}
ServerApplication::~ServerApplication()
{
}
bool ServerApplication::isInteractive() const
{
bool runsInBackground = config().getBool("application.runAsDaemon", false) || config().getBool("application.runAsService", false);
return !runsInBackground;
}
int ServerApplication::run()
{
return Application::run();
}
void ServerApplication::terminate()
{
#if defined(POCO_OS_FAMILY_WINDOWS)
_terminate.set();
#elif defined(POCO_VXWORKS) || defined(POCO_ANDROID)
_terminate.set();
#else
Poco::Process::requestTermination(Process::id());
#endif
}
#if defined(POCO_OS_FAMILY_WINDOWS)
#if !defined(_WIN32_WCE)
//
// Windows specific code
//
BOOL ServerApplication::ConsoleCtrlHandler(DWORD ctrlType)
{
switch (ctrlType)
{
case CTRL_C_EVENT:
case CTRL_CLOSE_EVENT:
case CTRL_BREAK_EVENT:
terminate();
return _terminated.tryWait(10000) ? TRUE : FALSE;
default:
return FALSE;
}
}
void ServerApplication::ServiceControlHandler(DWORD control)
{
switch (control)
{
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
terminate();
_serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
break;
case SERVICE_CONTROL_INTERROGATE:
break;
}
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
}
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
void ServerApplication::ServiceMain(DWORD argc, LPWSTR* argv)
#else
void ServerApplication::ServiceMain(DWORD argc, LPTSTR* argv)
#endif
{
ServerApplication& app = static_cast<ServerApplication&>(Application::instance());
app.config().setBool("application.runAsService", true);
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
_serviceStatusHandle = RegisterServiceCtrlHandlerW(L"", ServiceControlHandler);
#else
_serviceStatusHandle = RegisterServiceCtrlHandlerA("", ServiceControlHandler);
#endif
if (!_serviceStatusHandle)
throw SystemException("cannot register service control handler");
_serviceStatus.dwServiceType = SERVICE_WIN32;
_serviceStatus.dwCurrentState = SERVICE_START_PENDING;
_serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
_serviceStatus.dwWin32ExitCode = 0;
_serviceStatus.dwServiceSpecificExitCode = 0;
_serviceStatus.dwCheckPoint = 0;
_serviceStatus.dwWaitHint = 0;
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
try
{
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
std::vector<std::string> args;
for (DWORD i = 0; i < argc; ++i)
{
std::string arg;
Poco::UnicodeConverter::toUTF8(argv[i], arg);
args.push_back(arg);
}
app.init(args);
#else
app.init(argc, argv);
#endif
_serviceStatus.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
int rc = app.run();
_serviceStatus.dwWin32ExitCode = rc ? ERROR_SERVICE_SPECIFIC_ERROR : 0;
_serviceStatus.dwServiceSpecificExitCode = rc;
}
catch (Exception& exc)
{
app.logger().log(exc);
_serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
_serviceStatus.dwServiceSpecificExitCode = EXIT_CONFIG;
}
catch (...)
{
app.logger().error("fatal error - aborting");
_serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
_serviceStatus.dwServiceSpecificExitCode = EXIT_SOFTWARE;
}
_serviceStatus.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
}
void ServerApplication::waitForTerminationRequest()
{
SetConsoleCtrlHandler(ConsoleCtrlHandler, TRUE);
_terminate.wait();
_terminated.set();
}
int ServerApplication::run(int argc, char** argv)
{
if (!hasConsole() && isService())
{
return 0;
}
else
{
int rc = EXIT_OK;
try
{
init(argc, argv);
switch (_action)
{
case SRV_REGISTER:
registerService();
rc = EXIT_OK;
break;
case SRV_UNREGISTER:
unregisterService();
rc = EXIT_OK;
break;
default:
rc = run();
}
}
catch (Exception& exc)
{
logger().log(exc);
rc = EXIT_SOFTWARE;
}
return rc;
}
}
int ServerApplication::run(const std::vector<std::string>& args)
{
if (!hasConsole() && isService())
{
return 0;
}
else
{
int rc = EXIT_OK;
try
{
init(args);
switch (_action)
{
case SRV_REGISTER:
registerService();
rc = EXIT_OK;
break;
case SRV_UNREGISTER:
unregisterService();
rc = EXIT_OK;
break;
default:
rc = run();
}
}
catch (Exception& exc)
{
logger().log(exc);
rc = EXIT_SOFTWARE;
}
return rc;
}
}
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
int ServerApplication::run(int argc, wchar_t** argv)
{
if (!hasConsole() && isService())
{
return 0;
}
else
{
int rc = EXIT_OK;
try
{
init(argc, argv);
switch (_action)
{
case SRV_REGISTER:
registerService();
rc = EXIT_OK;
break;
case SRV_UNREGISTER:
unregisterService();
rc = EXIT_OK;
break;
default:
rc = run();
}
}
catch (Exception& exc)
{
logger().log(exc);
rc = EXIT_SOFTWARE;
}
return rc;
}
}
#endif
bool ServerApplication::isService()
{
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
SERVICE_TABLE_ENTRYW svcDispatchTable[2];
svcDispatchTable[0].lpServiceName = L"";
svcDispatchTable[0].lpServiceProc = ServiceMain;
svcDispatchTable[1].lpServiceName = NULL;
svcDispatchTable[1].lpServiceProc = NULL;
return StartServiceCtrlDispatcherW(svcDispatchTable) != 0;
#else
SERVICE_TABLE_ENTRY svcDispatchTable[2];
svcDispatchTable[0].lpServiceName = "";
svcDispatchTable[0].lpServiceProc = ServiceMain;
svcDispatchTable[1].lpServiceName = NULL;
svcDispatchTable[1].lpServiceProc = NULL;
return StartServiceCtrlDispatcherA(svcDispatchTable) != 0;
#endif
}
bool ServerApplication::hasConsole()
{
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
return hStdOut != INVALID_HANDLE_VALUE && hStdOut != NULL;
}
void ServerApplication::registerService()
{
std::string name = config().getString("application.baseName");
std::string path = config().getString("application.path");
WinService service(name);
if (_displayName.empty())
service.registerService(path);
else
service.registerService(path, _displayName);
if (_startup == "auto")
service.setStartup(WinService::SVC_AUTO_START);
else if (_startup == "manual")
service.setStartup(WinService::SVC_MANUAL_START);
if (!_description.empty())
service.setDescription(_description);
logger().information("The application has been successfully registered as a service.");
}
void ServerApplication::unregisterService()
{
std::string name = config().getString("application.baseName");
WinService service(name);
service.unregisterService();
logger().information("The service has been successfully unregistered.");
}
void ServerApplication::defineOptions(OptionSet& options)
{
Application::defineOptions(options);
options.addOption(
Option("registerService", "", "Register the application as a service.")
.required(false)
.repeatable(false)
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handleRegisterService)));
options.addOption(
Option("unregisterService", "", "Unregister the application as a service.")
.required(false)
.repeatable(false)
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handleUnregisterService)));
options.addOption(
Option("displayName", "", "Specify a display name for the service (only with /registerService).")
.required(false)
.repeatable(false)
.argument("name")
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handleDisplayName)));
options.addOption(
Option("description", "", "Specify a description for the service (only with /registerService).")
.required(false)
.repeatable(false)
.argument("text")
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handleDescription)));
options.addOption(
Option("startup", "", "Specify the startup mode for the service (only with /registerService).")
.required(false)
.repeatable(false)
.argument("automatic|manual")
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handleStartup)));
}
void ServerApplication::handleRegisterService(const std::string& name, const std::string& value)
{
_action = SRV_REGISTER;
}
void ServerApplication::handleUnregisterService(const std::string& name, const std::string& value)
{
_action = SRV_UNREGISTER;
}
void ServerApplication::handleDisplayName(const std::string& name, const std::string& value)
{
_displayName = value;
}
void ServerApplication::handleDescription(const std::string& name, const std::string& value)
{
_description = value;
}
void ServerApplication::handleStartup(const std::string& name, const std::string& value)
{
if (Poco::icompare(value, 4, std::string("auto")) == 0)
_startup = "auto";
else if (Poco::icompare(value, std::string("manual")) == 0)
_startup = "manual";
else
throw InvalidArgumentException("argument to startup option must be 'auto[matic]' or 'manual'");
}
#else // _WIN32_WCE
void ServerApplication::waitForTerminationRequest()
{
_terminate.wait();
}
int ServerApplication::run(int argc, char** argv)
{
try
{
init(argc, argv);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
int ServerApplication::run(const std::vector<std::string>& args)
{
try
{
init(args);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
int ServerApplication::run(int argc, wchar_t** argv)
{
try
{
init(argc, argv);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
#endif
#endif // _WIN32_WCE
#elif defined(POCO_VXWORKS)
//
// VxWorks specific code
//
void ServerApplication::waitForTerminationRequest()
{
_terminate.wait();
}
int ServerApplication::run(int argc, char** argv)
{
try
{
init(argc, argv);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
int ServerApplication::run(const std::vector<std::string>& args)
{
try
{
init(args);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
void ServerApplication::defineOptions(OptionSet& options)
{
Application::defineOptions(options);
}
#elif defined(POCO_OS_FAMILY_UNIX)
//
// Unix specific code
//
void ServerApplication::waitForTerminationRequest()
{
#ifndef POCO_ANDROID
sigset_t sset;
sigemptyset(&sset);
if (!std::getenv("POCO_ENABLE_DEBUGGER"))
{
sigaddset(&sset, SIGINT);
}
sigaddset(&sset, SIGQUIT);
sigaddset(&sset, SIGTERM);
sigprocmask(SIG_BLOCK, &sset, NULL);
int sig;
sigwait(&sset, &sig);
#else // POCO_ANDROID
_terminate.wait();
#endif
}
int ServerApplication::run(int argc, char** argv)
{
bool runAsDaemon = isDaemon(argc, argv);
if (runAsDaemon)
{
beDaemon();
}
try
{
init(argc, argv);
if (runAsDaemon)
{
int rc = chdir("/");
if (rc != 0) return EXIT_OSERR;
}
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
int ServerApplication::run(const std::vector<std::string>& args)
{
bool runAsDaemon = false;
for (std::vector<std::string>::const_iterator it = args.begin(); it != args.end(); ++it)
{
if (*it == "--daemon")
{
runAsDaemon = true;
break;
}
}
if (runAsDaemon)
{
beDaemon();
}
try
{
init(args);
if (runAsDaemon)
{
int rc = chdir("/");
if (rc != 0) return EXIT_OSERR;
}
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
bool ServerApplication::isDaemon(int argc, char** argv)
{
std::string option("--daemon");
for (int i = 1; i < argc; ++i)
{
if (option == argv[i])
return true;
}
return false;
}
void ServerApplication::beDaemon()
{
pid_t pid;
if ((pid = fork()) < 0)
throw SystemException("cannot fork daemon process");
else if (pid != 0)
exit(0);
setsid();
umask(0);
// attach stdin, stdout, stderr to /dev/null
// instead of just closing them. This avoids
// issues with third party/legacy code writing
// stuff to stdout/stderr.
FILE* fin = freopen("/dev/null", "r+", stdin);
if (!fin) throw Poco::OpenFileException("Cannot attach stdin to /dev/null");
FILE* fout = freopen("/dev/null", "r+", stdout);
if (!fout) throw Poco::OpenFileException("Cannot attach stdout to /dev/null");
FILE* ferr = freopen("/dev/null", "r+", stderr);
if (!ferr) throw Poco::OpenFileException("Cannot attach stderr to /dev/null");
}
void ServerApplication::defineOptions(OptionSet& options)
{
Application::defineOptions(options);
options.addOption(
Option("daemon", "", "Run application as a daemon.")
.required(false)
.repeatable(false)
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handleDaemon)));
options.addOption(
Option("pidfile", "", "Write the process ID of the application to given file.")
.required(false)
.repeatable(false)
.argument("path")
.callback(OptionCallback<ServerApplication>(this, &ServerApplication::handlePidFile)));
}
void ServerApplication::handleDaemon(const std::string& name, const std::string& value)
{
config().setBool("application.runAsDaemon", true);
}
void ServerApplication::handlePidFile(const std::string& name, const std::string& value)
{
std::ofstream ostr(value.c_str());
if (ostr.good())
ostr << Poco::Process::id() << std::endl;
else
throw Poco::CreateFileException("Cannot write PID to file", value);
Poco::TemporaryFile::registerForDeletion(value);
}
#elif defined(POCO_OS_FAMILY_VMS)
//
// VMS specific code
//
namespace
{
static void handleSignal(int sig)
{
ServerApplication::terminate();
}
}
void ServerApplication::waitForTerminationRequest()
{
struct sigaction handler;
handler.sa_handler = handleSignal;
handler.sa_flags = 0;
sigemptyset(&handler.sa_mask);
sigaction(SIGINT, &handler, NULL);
sigaction(SIGQUIT, &handler, NULL);
long ctrlY = LIB$M_CLI_CTRLY;
unsigned short ioChan;
$DESCRIPTOR(ttDsc, "TT:");
lib$disable_ctrl(&ctrlY);
sys$assign(&ttDsc, &ioChan, 0, 0);
sys$qiow(0, ioChan, IO$_SETMODE | IO$M_CTRLYAST, 0, 0, 0, terminate, 0, 0, 0, 0, 0);
sys$qiow(0, ioChan, IO$_SETMODE | IO$M_CTRLCAST, 0, 0, 0, terminate, 0, 0, 0, 0, 0);
std::string evName("POCOTRM");
NumberFormatter::appendHex(evName, Poco::Process::id(), 8);
Poco::NamedEvent ev(evName);
try
{
ev.wait();
}
catch (...)
{
// CTRL-C will cause an exception to be raised
}
sys$dassgn(ioChan);
lib$enable_ctrl(&ctrlY);
}
int ServerApplication::run(int argc, char** argv)
{
try
{
init(argc, argv);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
int ServerApplication::run(const std::vector<std::string>& args)
{
try
{
init(args);
}
catch (Exception& exc)
{
logger().log(exc);
return EXIT_CONFIG;
}
return run();
}
void ServerApplication::defineOptions(OptionSet& options)
{
Application::defineOptions(options);
}
#endif
} } // namespace Poco::Util