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/*
* Oreka -- A media capture and retrieval platform
*
* Copyright (C) 2005, orecx LLC
*
* http://www.orecx.com
*
* This program is free software, distributed under the terms of
* the GNU General Public License.
* Please refer to http://www.gnu.org/copyleft/gpl.html
*
*/
#define _WINSOCKAPI_ // prevents the inclusion of winsock.h
#include "Utils.h"
#ifdef WIN32
#include <windows.h>
#include <tchar.h>
SERVICE_STATUS serviceStatus;
SERVICE_STATUS_HANDLE serviceStatusHandle = 0;
HANDLE stopServiceEvent = 0;
#endif
#include "Daemon.h"
#ifdef WIN32
void WINAPI ServiceControlHandler( DWORD controlCode )
{
switch ( controlCode )
{
case SERVICE_CONTROL_INTERROGATE:
break;
case SERVICE_CONTROL_SHUTDOWN:
case SERVICE_CONTROL_STOP:
serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
SetServiceStatus( serviceStatusHandle, &serviceStatus );
DaemonSingleton::instance()->Stop();
return;
case SERVICE_CONTROL_PAUSE:
break;
case SERVICE_CONTROL_CONTINUE:
break;
default:
;
}
SetServiceStatus( serviceStatusHandle, &serviceStatus );
}
#endif
void Daemon::Initialize(CStdString serviceName, DaemonHandler runHandler, DaemonHandler stopHandler)
{
m_runHandler = runHandler;
m_stopHandler = stopHandler;
m_serviceName = serviceName;
m_stopping = false;
}
void Daemon::Start()
{
#ifdef WIN32
// change current directory to service location (default for NT services is system32)
CStdString workingDirectory;
TCHAR path[ _MAX_PATH + 1 ];
if ( GetModuleFileName( 0, path, sizeof(path)/sizeof(path[0]) ) > 0 )
{
CStdString pathString = path;
int lastBackSlashPosition = pathString.ReverseFind("\\");
if (lastBackSlashPosition != -1)
{
workingDirectory = pathString.Left(lastBackSlashPosition);
chdir((PCSTR)workingDirectory);
}
}
SERVICE_TABLE_ENTRY serviceTable[] =
{
{ (char *)(PCSTR)m_serviceName, Daemon::Run },
{ 0, 0 }
};
StartServiceCtrlDispatcher( serviceTable );
#else
Daemon::Run();
#endif
}
#ifdef WIN32
void WINAPI Daemon::Run( DWORD /*argc*/, TCHAR* /*argv*/[] )
#else
void Daemon::Run()
#endif
{
#ifdef WIN32
// initialise service status
serviceStatus.dwServiceType = SERVICE_WIN32;
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
serviceStatus.dwControlsAccepted = 0;
serviceStatus.dwWin32ExitCode = NO_ERROR;
serviceStatus.dwServiceSpecificExitCode = NO_ERROR;
serviceStatus.dwCheckPoint = 0;
serviceStatus.dwWaitHint = 0;
serviceStatusHandle = RegisterServiceCtrlHandler( (PCSTR)DaemonSingleton::instance()->m_serviceName, ServiceControlHandler );
if ( serviceStatusHandle )
{
// service is starting
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
SetServiceStatus( serviceStatusHandle, &serviceStatus );
// running
serviceStatus.dwControlsAccepted |= (SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
serviceStatus.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus( serviceStatusHandle, &serviceStatus );
}
#else // non WIN32
int i,lfp;
char str[10];
if(getppid()==1) return; /* already a daemon */
i=fork();
if (i<0) exit(1); /* fork error */
if (i>0) exit(0); /* parent exits */
/* child (daemon) continues */
setsid(); /* obtain a new process group */
for (i=getdtablesize();i>=0;--i) close(i); /* close all descriptors */
i=open("/dev/null",O_RDWR); dup(i); dup(i); /* handle standart I/O */
umask(027); /* set newly created file permissions */
//chdir(RUNNING_DIR); /* change running directory */
lfp=open("/var/log/orkaudio/orkaudio.lock",O_RDWR|O_CREAT,0640);
if (lfp<0)
{
lfp=open("orkaudio.lock",O_RDWR|O_CREAT,0640);
}
if (lfp<0)
{
exit(1); /* can not open */
}
if (lockf(lfp,F_TLOCK,0)<0) exit(0); /* can not lock */
/* first instance continues */
sprintf(str,"%d\n",getpid());
write(lfp,str,strlen(str)); /* record pid to lockfile */
//signal(SIGCHLD,SIG_IGN); /* ignore child */
//signal(SIGTSTP,SIG_IGN); /* ignore tty signals */
//signal(SIGTTOU,SIG_IGN);
//signal(SIGTTIN,SIG_IGN);
//signal(SIGHUP,signal_handler); /* catch hangup signal */
#endif
DaemonSingleton::instance()->m_runHandler();
#ifdef WIN32
// service was stopped
serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
SetServiceStatus( serviceStatusHandle, &serviceStatus );
// do cleanup here
CloseHandle( stopServiceEvent );
stopServiceEvent = 0;
// service is now stopped
serviceStatus.dwControlsAccepted &= ~(SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
serviceStatus.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus( serviceStatusHandle, &serviceStatus );
#endif
}
void Daemon::Stop()
{
m_stopping = true;
m_stopHandler();
}
void Daemon::Install()
{
#ifdef WIN32
SC_HANDLE serviceControlManager = OpenSCManager( 0, 0, SC_MANAGER_CREATE_SERVICE );
if ( serviceControlManager )
{
TCHAR path[ _MAX_PATH + 1 ];
if ( GetModuleFileName( 0, path, sizeof(path)/sizeof(path[0]) ) > 0 )
{
SC_HANDLE service = CreateService( serviceControlManager,
(PCSTR)m_serviceName, (PCSTR)m_serviceName,
SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
SERVICE_AUTO_START, SERVICE_ERROR_IGNORE, path,
0, 0, 0, 0, 0 );
if ( service )
CloseServiceHandle( service );
}
CloseServiceHandle( serviceControlManager );
}
#endif
}
void Daemon::Uninstall()
{
#ifdef WIN32
SC_HANDLE serviceControlManager = OpenSCManager( 0, 0, SC_MANAGER_CONNECT );
if ( serviceControlManager )
{
SC_HANDLE service = OpenService( serviceControlManager,
(PCSTR)m_serviceName, SERVICE_QUERY_STATUS | DELETE );
if ( service )
{
SERVICE_STATUS serviceStatus;
if ( QueryServiceStatus( service, &serviceStatus ) )
{
if ( serviceStatus.dwCurrentState == SERVICE_STOPPED )
DeleteService( service );
}
CloseServiceHandle( service );
}
CloseServiceHandle( serviceControlManager );
}
#endif
}
bool Daemon::IsStopping()
{
return m_stopping;
}
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