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Enumerate NT Services in a SystemJuly 1, 2004
Platform: Windows DESCRIPTION: Every machine installed with Windows NT Operating system and above will have NT services running with it. Developers will also write some Win32 NT Services for applications. This article describes how to enumerate the NT Services installed in the system using the Win32 API EnumServicesStatus. Click here to download the script. Scroll down to view the script. #include #include void main() { //Open the Service Control Manager SC_HANDLE sc = ::OpenSCManager (NULL,NULL,SC_MANAGER_ENUMERATE_SERVICE); //Check if OpenSCManager returns NULL. Otherwise proceed if (sc != NULL) { printf("Opened SCM using OpenSCManager \n"); ENUM_SERVICE_STATUS service_data, *lpservice; BOOL retVal; DWORD bytesNeeded,srvCount,resumeHandle = 0,srvType, srvState; srvType = SERVICE_WIN32; srvState = SERVICE_STATE_ALL; //Call EnumServicesStatus using the handle returned by OpenSCManager retVal = ::EnumServicesStatus (sc,srvType,srvState,&service;_data,sizeof(service_data), &bytesNeeded;,&srvCount;,&resumeHandle;); DWORD err = GetLastError(); //Check if EnumServicesStatus needs more memory space if ((retVal == FALSE) || err == ERROR_MORE_DATA) { DWORD dwBytes = bytesNeeded + sizeof(ENUM_SERVICE_STATUS); lpservice = new ENUM_SERVICE_STATUS [dwBytes]; EnumServicesStatus (sc,srvType,srvState,lpservice,dwBytes, &bytesNeeded;,&srvCount;,&resumeHandle;); } printf("Count of NT Services using EnumServicesStatus : %d\n\n",srvCount); for(int i=0;i printf("%s\n",lpservice[i].lpDisplayName); } } //Close the SC_HANLDE returned by OpenSCManager CloseServiceHandle(sc); } Disclaimer: We hope that the information in these pages is valuable to you. Your use of the information contained in these pages, however, is at your sole risk. All information on these pages is provided "as - is", without any warranty, whether express or implied, of its accuracy, completeness, fitness for a particular purpose, title or non-infringement, and none of the third-party products or information mentioned in the work are authored, recommended, supported or guaranteed by me. I shall not be liable for any damages you may sustain by using this information, whether direct, indirect, special, incidental or consequential, even if it has been advised of the possibility of such damages.
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