Enumerate Windows system services, fetch service name through process ID



Enumerate Windows system Services

The functions used and the MSDN instructions are as follows:
1, OpenSCManager description
http://msdn.microsoft.com/en-us/library/windows/desktop/ms684323 (v=vs.85). aspx

2, Enumservicesstatusex description
http://msdn.microsoft.com/en-us/library/windows/desktop/ms682640 (v=vs.85). aspx

3, Closeservicehandle description
http://msdn.microsoft.com/en-us/library/windows/desktop/ms682028 (v=vs.85). aspx

Test code:

#include <stdio.h> #include <stdlib.h> #include <tchar.h> #include <windows.h>int main (int argc , Char *argv[]) {LONG Lret = 0; BOOL bRet = FALSE;              Sc_handle HSCM = NULL;                  Service database handle char *pbuf = NULL;                Buffer pointer dword dwbufsize = 0;                Buffer length passed in DWORD dwbufneed = 0;        Required buffer length DWORD Dwnumberofservice = 0;   Number of services returned enum_service_status_process *pserviceinfo = NULL; Service Information//establish a connection to the Service Control Manager and open the specified database HSCM = OpenSCManager (null, NULL, Sc_manager_enumerate_service | Sc_manager_connect); if (NULL = = HSCM) {printf ("OpenSCManager error.\n"); return-1;} Gets the required buffer size enumservicesstatusex (HSCM, Sc_enum_process_info, Service_win32, Service_state_all, NULL, Dwbufsize, &dwbufneed, &dwnumberofservice, NULL, NULL),//Multiple settings 1 length of service information dwbufsize = dwbufneed + sizeof (enum_service_ status_process);p buf = (char *) malloc (dwbufsize); if (NULL = = PBuf) {printf ("malloc error.\n"); return-1;} memset (pBuf, 0, dwbufsize);//Get service information bret = EnuMservicesstatusex (HSCM, Sc_enum_process_info, Service_win32, Service_state_all, (LPBYTE) PBuf, DwBufSize, & Dwbufneed, &dwnumberofservice, NULL, NULL), if (BRet = = FALSE) {printf ("Enumservicesstatusex error.\n");:: Closeservicehandle (HSCM); free (pBuf); return-1;} Close Open Service Handle bRet =:: Closeservicehandle (HSCM), if (BRet = = FALSE) {printf ("Closeservicehandle error.\n");} printf ("Service num:%d\n", dwnumberofservice);p serviceinfo = (lpenum_service_status_process) pbuf;//Print the service information obtained for ( unsigned int i = 0; i < Dwnumberofservice; i++) {printf ("----------%d----------\ n", i);p rintf ("DisplayName \t\t:%s \ n", Pserviceinfo[i].lpdisplayname);p rintf ( "ServiceName \t\t:%s \ n", Pserviceinfo[i].lpservicename);p rintf ("servicetype \t\t:%d \ n", Pserviceinfo[i]. Servicestatusprocess.dwservicetype);p rintf ("currentstate \t\t:%d \ n", Pserviceinfo[i]. servicestatusprocess.dwcurrentstate);p rintf ("controlsaccepted \ t:%d \ n", Pserviceinfo[i]. servicestatusprocess.dwcontrolsaccepted);p rintf ("Win32exitcode \t\t: %d \ n ", Pserviceinfo[i]. Servicestatusprocess.dwwin32exitcode);p rintf ("ServiceSpecificExitCode:%d \ n", Pserviceinfo[i]. Servicestatusprocess.dwservicespecificexitcode);p rintf ("CheckPoint \t\t:%d \ n", Pserviceinfo[i]. Servicestatusprocess.dwcheckpoint);p rintf ("WaitHint \t\t:%d \ n", Pserviceinfo[i]. Servicestatusprocess.dwwaithint);p rintf ("Process Id \t\t:%d \ n", Pserviceinfo[i]. SERVICESTATUSPROCESS.DWPROCESSID);p rintf ("serviceflags \t\t:%d \ n", Pserviceinfo[i]. Servicestatusprocess.dwserviceflags);} Free (pBuf); System ("PAUSE"); return 0;}

Now that you have access to all of the service information,
Then, according to the process ID query whether the process is a service, get the service name and a series of operations can be completed according to their own needs
Get process ID GetCurrentProcessId ()

Enumerate Windows system services, fetch service name through process ID