CmGetDeviceInterfaceSubkeyPath

NTSTATUS __fastcall CmGetDeviceInterfaceSubkeyPath(
        __int64 a1,
        const WCHAR *a2,
        char a3,
        wchar_t *a4,
        wchar_t *pszDest,
        unsigned int cchDest){
  NTSTATUS result; 
  WCHAR *v10; 
  __int64 v11; 
  WCHAR *v12; 
  unsigned __int64 v13; 
  unsigned __int64 v14; 
  size_t *pcchRemaining; 
  size_t *pcchRemaininga; 
  UINT64 dwFlags; 
  size_t v18; 
  NTSTRSAFE_PWSTR ppszDestEnd; 
  struct _UNICODE_STRING DestinationString; 
  GUID Guid; 
  ppszDestEnd = 0i64;
  v18 = 0i64;
  Guid = 0i64;
  DestinationString = 0i64;
  result = CmValidateDeviceInterfaceName(a1, a2);
  if( result >= 0 )
  {
    v10 = wcschr((WCHAR *)a2 + 4, 0x5Cu);
    v11 = -1i64;
    if( v10 )
    {
      v12 = v10 + 1;
      v13 = v10 - a2;
    }
    else
    {
      v12 = 0i64;
      v13 = -1i64;
      do
        ++v13;
      while( a2[v13] );
    }
    if( v13 > 0xFFFFFFFF )
      return -1073741675;
    if( (unsigned int)v13 < 0x30 )
      return -1073741773;
    v14 = (unsigned int)(v13 + 1);
    if( a3 )
    {
      v14 += 2i64;
      if( v12 )
      {
        do
          ++v11;
        while( v12[v11] );
        v14 += v11;
      }
    }
    if( v14 > 0xFFFFFFFF )
      return -1073741675;
    if( !a4
      || (LODWORD(dwFlags) = 2048,
          result = RtlStringCchCopyNExW(
                     a4,
                     0x27ui64,
                     (WCHAR *)&a2[(unsigned int)v13 - 38],
                     0x26ui64,
                     0i64,
                     0i64,
                     dwFlags),
          result >= 0)
      && (result = RtlInitUnicodeStringEx(&DestinationString, a4), result >= 0)
      && (result = RtlGUIDFromString(&DestinationString, &Guid), result >= 0) )
    {
      if( (unsigned int)v14 > cchDest )
      {
        return -1073741789;
      }
      else
      {
        LODWORD(dwFlags) = 2048;
        result = RtlStringCchCopyNExW(pszDest, cchDest, (WCHAR *)a2, (unsigned int)v13, &ppszDestEnd, &v18, dwFlags);
        if( result >= 0 )
        {
          *(_QWORD *)pszDest = 0x23003F00230023i64;
          if( a3 )
          {
            LODWORD(pcchRemaining) = 2048;
            result = RtlStringCchCopyExW(ppszDestEnd, v18, (WCHAR *)L"\\#", &ppszDestEnd, &v18, (UINT64)pcchRemaining);
            if( result >= 0 )
            {
              if( v12 )
              {
                LODWORD(pcchRemaininga) = 2048;
                return RtlStringCchCopyExW(ppszDestEnd, v18, v12, &ppszDestEnd, &v18, (UINT64)pcchRemaininga);
              }
            }
          }
        }
      }
    }
  }
  return result;
}

Referenced by: