CmOpenCommonClassRegKeyWorker

__int64 __fastcall CmOpenCommonClassRegKeyWorker(
        __int64 a1,
        const WCHAR *a2,
        __int16 a3,
        int a4,
        ACCESS_MASK a5,
        char a6,
        void **a7,
        _DWORD *a8){
  const WCHAR *v8; 
  int v11; 
  unsigned __int64 v13; 
  wchar_t *pszDest; 
  int v15; 
  int inited; 
  unsigned __int16 Length; 
  const wchar_t *v18; 
  char *v19; 
  __int64 v20; 
  void **v21; 
  int Tree; 
  _DWORD *v23; 
  _QWORD *v25; 
  int v26; 
  size_t cchDest; 
  char *v28; 
  HANDLE Handle; 
  struct _UNICODE_STRING DestinationString; 
  __int64 v32; 
  v8 = a2;
  LODWORD(v32) = 0;
  v28 = 0i64;
  Handle = 0i64;
  v11 = 4;
  DestinationString = 0i64;
  LODWORD(v13) = (a3 & 0x200) != 0 ? 320 : 200;
  pszDest = (wchar_t *)ExAllocatePoolWithTag(PagedPool, (unsigned int)v13, 0x52504E50ui64);
  if( pszDest )
  {
    while( 1 )
    {
      LODWORD(cchDest) = (unsigned int)v13 >> 1;
      CmGetCommonClassRegKeyPath((unsigned int)v13 >> 1, v8, a3, a4, v26, pszDest, cchDest, (__int64)&v32);
      inited = v15;
      if( v15 != -1073741789 )
        break;
      ExFreePoolWithTag(pszDest, 0);
      pszDest = 0i64;
      v13 = 2i64 * (unsigned int)v32;
      if( v13 > 0xFFFFFFFF )
      {
        inited = -1073741675;
        goto LABEL_21;
      }
      pszDest = (wchar_t *)ExAllocatePoolWithTag(PagedPool, (unsigned int)v13, 0x52504E50ui64);
      if( !pszDest )
        goto LABEL_36;
      v8 = a2;
    }
  }
  else
  {
LABEL_36:
    inited = -1073741801;
  }
  if( inited < 0 )
    goto LABEL_21;
  if( (a3 & 0x100) != 0 )
  {
    v18 = pszDest;
    if( a1 )
      v25 = *(_QWORD **)(a1 + 224);
    else
      v25 = 0i64;
    inited = SysCtxRegOpenCurrentUserKey(v25, 0, 0x2000000u, &Handle);
    if( inited < 0 )
      goto LABEL_21;
    v19 = (char *)Handle;
    v28 = (char *)Handle;
  }
  else
  {
    inited = RtlInitUnicodeStringEx(&DestinationString, pszDest);
    if( inited < 0 )
      goto LABEL_21;
    Length = DestinationString.Length;
    if( DestinationString.Length >= (unsigned int)v13
      || DestinationString.Length <= 0x32u
      || !(unsigned __int8)RtlPrefixUnicodeString(
                             (PVOID)&`_CmDeleteDeviceContainerRegKeyWorker'::`2'::ObjectPathRootPrefix,
                             (INT64 *)&DestinationString) )
    {
      inited = -1073741811;
      goto LABEL_21;
    }
    v18 = pszDest + 25;
    DestinationString.MaximumLength -= 50;
    DestinationString.Buffer = pszDest + 25;
    DestinationString.Length = Length - 50;
    if( (unsigned __int8)RtlPrefixUnicodeString(
                            (PVOID)&`_CmOpenCommonClassRegKeyWorker'::`2'::ClassKeyPrefix,
                            (INT64 *)&DestinationString) )
    {
      v11 = 7;
      v18 = pszDest + 39;
    }
    else if( (unsigned __int8)RtlPrefixUnicodeString(
                                 (PVOID)&`_CmDeleteDeviceInterfaceRegKeyWorker'::`2'::DeviceClassesKeyPrefix,
                                 (INT64 *)&DestinationString) )
    {
      v11 = 8;
      v18 = pszDest + 47;
    }
    else if( (unsigned __int8)RtlPrefixUnicodeString(
                                 (PVOID)&`_CmOpenDeviceInterfaceRegKeyWorker'::`2'::HardwareProfilesKeyPrefix,
                                 (INT64 *)&DestinationString) )
    {
      v11 = 14;
      v18 = pszDest + 43;
    }
    inited = PnpCtxGetCachedContextBaseKey(a1, v11, (__int64 *)&v28);
    if( inited < 0 )
      goto LABEL_21;
    v19 = v28;
  }
  if( a6 )
  {
    Tree = PnpCtxRegCreateTree(a1, v19, v18, 0, a5, 0i64, (__int64)a7, (__int64)a8);
LABEL_19:
    if( Tree != -1073741444 )
    {
      if( Tree >= 0 )
        goto LABEL_21;
      goto LABEL_30;
    }
    inited = -1073741595;
    goto LABEL_21;
  }
  if( a1 )
    v20 = *(_QWORD *)(a1 + 224);
  else
    v20 = 0i64;
  v21 = a7;
  Tree = SysCtxRegOpenKey(v20, v19, v18, 0, a5, a7);
  v23 = a8;
  if( Tree >= 0 )
    *a8 = 2;
  if( Tree != -1073741772 )
    goto LABEL_19;
  if( v11 != 8 || !*(_BYTE *)(a1 + 4) )
  {
LABEL_30:
    inited = Tree;
    goto LABEL_21;
  }
  inited = PnpCtxGetCachedContextBaseKey(a1, 9, (__int64 *)&v28);
  if( inited >= 0 )
  {
    Tree = SysCtxRegOpenKey(*(_QWORD *)(a1 + 224), v28, v18, 0, a5, v21);
    if( Tree >= 0 )
      *v23 = 2;
    goto LABEL_19;
  }
LABEL_21:
  if( Handle )
    ZwClose(Handle);
  if( pszDest )
    ExFreePoolWithTag(pszDest, 0);
  return(unsigned int)inited;
}

Referenced by: