reactos/base/applications/sc/depend.c

   1 /*
   2  * PROJECT:     ReactOS Services
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        base/applications/sc/depend.c
   5  * PURPOSE:
   6  * COPYRIGHT:   Copyright 2016 Eric Kohl
   7  *
   8  */
   9
  10 #include "sc.h"
  11
  12 BOOL EnumDepend(LPCTSTR ServiceName)
  13 {
  14     SC_HANDLE hManager = NULL;
  15     SC_HANDLE hService = NULL;
  16     BOOL bResult = TRUE;
  17     DWORD BufferSize = 0;
  18     DWORD EntriesRead = 0;
  19     LPENUM_SERVICE_STATUS pBuffer = NULL;
  20     DWORD i;
  21
  22     hManager = OpenSCManager(NULL,
  23                              NULL,
  24                              SC_MANAGER_CONNECT);
  25     if (hManager == NULL)
  26     {
  27         _tprintf(_T("[SC] OpenSCManager FAILED %lu:\n\n"), GetLastError());
  28         bResult = FALSE;
  29         goto done;
  30     }
  31
  32     hService = OpenService(hManager, ServiceName, SERVICE_ENUMERATE_DEPENDENTS);
  33     if (hService == NULL)
  34     {
  35         _tprintf(_T("[SC] OpenService FAILED %lu:\n\n"), GetLastError());
  36         bResult = FALSE;
  37         goto done;
  38     }
  39
  40     if (!EnumDependentServices(hService,
  41                                SERVICE_STATE_ALL,
  42                                NULL,
  43                                0,
  44                                &BufferSize,
  45                                &EntriesRead))
  46     {
  47         if (BufferSize == 0)
  48         {
  49             _tprintf(_T("[SC] EnumDependentServices FAILED %lu:\n\n"), GetLastError());
  50             bResult = FALSE;
  51             goto done;
  52         }
  53     }
  54
  55     pBuffer = HeapAlloc(GetProcessHeap(), 0, BufferSize);
  56     if (pBuffer == NULL)
  57     {
  58         SetLastError(ERROR_OUTOFMEMORY);
  59         _tprintf(_T("[SC] HeapAlloc FAILED %lu:\n\n"), GetLastError());
  60         bResult = FALSE;
  61         goto done;
  62     }
  63
  64     if (!EnumDependentServices(hService,
  65                                SERVICE_STATE_ALL,
  66                                pBuffer,
  67                                BufferSize,
  68                                &BufferSize,
  69                                &EntriesRead))
  70     {
  71         _tprintf(_T("[SC] EnumDependentServices FAILED %lu:\n\n"), GetLastError());
  72         bResult = FALSE;
  73         goto done;
  74     }
  75
  76     _tprintf(_T("Enum: entriesRead = %lu\n"), EntriesRead);
  77
  78     for (i = 0; i < EntriesRead; i++)
  79     {
  80         _tprintf(_T("\n"));
  81         _tprintf(_T("SERVICE_NAME: %s\n"), pBuffer[i].lpServiceName);
  82         _tprintf(_T("DISPLAY_NAME: %s\n"), pBuffer[i].lpDisplayName);
  83         PrintServiceStatus(&pBuffer[i].ServiceStatus);
  84     }
  85
  86 done:
  87     if (bResult == FALSE)
  88         ReportLastError();
  89
  90     if (pBuffer != NULL)
  91         HeapFree(GetProcessHeap(), 0, pBuffer);
  92
  93     if (hService)
  94         CloseServiceHandle(hService);
  95
  96     if (hManager)
  97         CloseServiceHandle(hManager);
  98
  99     return bResult;
 100 }