/// Exitlude actions to stop the service, e.g. to remove any state that was created as part of _ServiceStartup.
///
/// @param[in] nReason how the service was run (e.g. SERVICE_RUN_INLINE) - different actions may be required
/// depending on whether the code is running direct from main() or through another mechanism.
static void _ServiceStop (int nReason) {
CSettings oSettings;
#ifndef _WIN32
if (nReason == SERVICE_RUN_DAEMON) {
const TCHAR *pszPID = oSettings.GetPidFile ();
if (pszPID) {
LOGINFO (TEXT ("Removing PID file ") << pszPID);
unlink (pszPID);
}
}
#endif /* ifndef _WIN32 */
}
/// Prelude actions to start up the service, e.g. to set any global variables from the settings or perform
/// any system specific actions. E.g. the Windows implementation registers with the service control manager
/// and can optionally set the security descriptor on the process to allow clients to kill/restart it.
///
/// @param[in] nReason how the startup is occuring (e.g. SERVICE_RUN_INLINE) - different actions may be
/// required depending on whether the code is running direct from main() or through another mechansim
static void _ServiceStartup (int nReason) {
CSettings oSettings;
#ifdef _WIN32
if (nReason == SERVICE_RUN_SCM) {
g_hServiceStatus = RegisterServiceCtrlHandler (oSettings.GetServiceName (), ServiceHandler);
}
PCTSTR pszSDDL = oSettings.GetServiceSDDL ();
if (pszSDDL) {
LOGDEBUG (TEXT ("Setting security descriptor ") << pszSDDL);
PSECURITY_DESCRIPTOR psdRelative;
if (ConvertStringSecurityDescriptorToSecurityDescriptor (pszSDDL, SDDL_REVISION_1, &psdRelative, NULL)) {
DWORD cbAbsolute = 1024;
PSECURITY_DESCRIPTOR psdAbsolute = (PSECURITY_DESCRIPTOR)malloc (cbAbsolute);
DWORD cbD = 1024;
PACL paclD = (PACL)malloc (cbD);
DWORD cbS = 1024;
PACL paclS = (PACL)malloc (cbS);
DWORD cbOwner = 1024;
PSID psidOwner = (PSID)malloc (cbOwner);
DWORD cbPGroup = 1024;
PSID psidPGroup = (PSID)malloc (cbPGroup);
if (MakeAbsoluteSD (psdRelative, psdAbsolute, &cbAbsolute, paclD, &cbD, paclS, &cbS, psidOwner, &cbOwner, psidPGroup, &cbPGroup)) {
DWORD dwError = SetSecurityInfo (GetCurrentProcess (), SE_KERNEL_OBJECT, DACL_SECURITY_INFORMATION, NULL, NULL, paclD, NULL);
if (dwError == ERROR_SUCCESS) {
LOGINFO (TEXT ("Security descriptor set on process handle"));
} else {
LOGWARN (TEXT ("Couldn't set security descriptor on process handle, error ") << GetLastError ());
}
if (nReason == SERVICE_RUN_SCM) {
SC_HANDLE hSCM = OpenSCManager (NULL, NULL, GENERIC_READ);
if (hSCM) {
SC_HANDLE hService = OpenService (hSCM, oSettings.GetServiceName (), GENERIC_WRITE | WRITE_DAC);
if (hService) {
dwError = SetSecurityInfo (hService, SE_SERVICE, DACL_SECURITY_INFORMATION, NULL, NULL, paclD, NULL);
if (dwError == ERROR_SUCCESS) {
LOGINFO (TEXT ("Security descriptor set on service"));
} else {
LOGWARN (TEXT ("Couldn't set security descriptor on service, error ") << GetLastError ());
}
CloseServiceHandle (hService);
} else {
LOGWARN (TEXT ("Couldn't open service, error ") << GetLastError ());
}
CloseServiceHandle (hSCM);
} else {
LOGWARN (TEXT ("Couldn't open SCM, error ") << GetLastError ());
}
}
} else {
LOGWARN (TEXT ("Couldn't create absolute security description, error ") << GetLastError ());
}
free (psdAbsolute);
free (paclD);
free (paclS);
free (psidOwner);
free (psidPGroup);
LocalFree (psdRelative);
} else {
LOGWARN (TEXT ("Couldn't parse SDDL ") << pszSDDL << TEXT (", error ") << GetLastError ());
}
} else {
LOGDEBUG (TEXT ("No security descriptor specified"));
}
#else /* ifdef _WIN32 */
if (nReason == SERVICE_RUN_DAEMON) {
const TCHAR *pszPID = oSettings.GetPidFile ();
if (pszPID) {
LOGINFO (TEXT ("Creating PID file ") << pszPID);
FILE *f = fopen (pszPID, "wt");
if (f) {
fprintf (f, "%d", getpid ());
fclose (f);
} else {
LOGWARN (TEXT ("Couldn't write to PID file ") << pszPID << TEXT (", error ") << GetLastError ());
}
} else {
LOGWARN (TEXT ("No PID file"));
}
}
#endif /* ifdef _WIN32 */
g_lBusyTimeout = oSettings.GetBusyTimeout ();
_ReportStateStarting ();
}