Пример #1
0
func Invoke(this *ole.IDispatch, dispid int, riid *ole.GUID, lcid int, flags int16, dispparams *ole.DISPPARAMS, result *ole.VARIANT, pexcepinfo *ole.EXCEPINFO, nerr *uint) uintptr {
	switch dispid {
	case 0:
		log.Println("DataArrival")
		winsock := (*EventReceiver)(unsafe.Pointer(this)).host
		var data ole.VARIANT
		ole.VariantInit(&data)
		oleutil.CallMethod(winsock, "GetData", &data)
		array := (*ole.SAFEARRAY)(unsafe.Pointer(uintptr(data.Val)))
		s := ole.BytePtrToString((*byte)(unsafe.Pointer(uintptr(array.PvData))))
		println()
		println(s)
		println()
	case 1:
		log.Println("Connected")
		winsock := (*EventReceiver)(unsafe.Pointer(this)).host
		oleutil.CallMethod(winsock, "SendData", "GET / HTTP/1.0\r\n\r\n")
	case 3:
		log.Println("SendProgress")
	case 4:
		log.Println("SendComplete")
	case 5:
		log.Println("Close")
		this.Release()
	case 6:
		log.Fatal("Error")
	default:
		log.Println(dispid)
	}
	return ole.E_NOTIMPL
}
Пример #2
0
func main() {
	ole.CoInitialize(0)
	unknown, _ := oleutil.CreateObject("Microsoft.XMLHTTP")
	xmlhttp, _ := unknown.QueryInterface(ole.IID_IDispatch)
	oleutil.CallMethod(xmlhttp, "open", "GET", "http://rss.slashdot.org/Slashdot/slashdot", false)
	oleutil.CallMethod(xmlhttp, "send", nil)
	state := -1
	for state != 4 {
		state = int(oleutil.MustGetProperty(xmlhttp, "readyState").Val)
		time.Sleep(10000000)
	}
	responseXml := oleutil.MustGetProperty(xmlhttp, "responseXml").ToIDispatch()
	items := oleutil.MustCallMethod(responseXml, "selectNodes", "rdf:RDF/item").ToIDispatch()
	length := int(oleutil.MustGetProperty(items, "length").Val)

	for n := 0; n < length; n++ {
		item := oleutil.MustGetProperty(items, "item", n).ToIDispatch()

		title := oleutil.MustCallMethod(item, "selectSingleNode", "title").ToIDispatch()
		println(oleutil.MustGetProperty(title, "text").ToString())

		link := oleutil.MustCallMethod(item, "selectSingleNode", "link").ToIDispatch()
		println("  " + oleutil.MustGetProperty(link, "text").ToString())

		title.Release()
		link.Release()
		item.Release()
	}
	items.Release()
	xmlhttp.Release()
}
func getFriendlyName(portname string) string {

	// this method panics a lot and i'm not sure why, just catch
	// the panic and return empty list
	defer func() {
		if e := recover(); e != nil {
			// e is the interface{} typed-value we passed to panic()
			log.Println("Got panic: ", e) // Prints "Whoops: boom!"
		}
	}()

	var friendlyName string

	// init COM, oh yeah
	ole.CoInitialize(0)
	defer ole.CoUninitialize()

	unknown, _ := oleutil.CreateObject("WbemScripting.SWbemLocator")
	defer unknown.Release()

	wmi, _ := unknown.QueryInterface(ole.IID_IDispatch)
	defer wmi.Release()

	// service is a SWbemServices
	serviceRaw, _ := oleutil.CallMethod(wmi, "ConnectServer")
	service := serviceRaw.ToIDispatch()
	defer service.Release()

	// result is a SWBemObjectSet
	//pname := syscall.StringToUTF16("SELECT * FROM Win32_PnPEntity where Name like '%" + "COM35" + "%'")
	pname := "SELECT * FROM Win32_PnPEntity where Name like '%" + portname + "%'"
	resultRaw, _ := oleutil.CallMethod(service, "ExecQuery", pname)
	result := resultRaw.ToIDispatch()
	defer result.Release()

	countVar, _ := oleutil.GetProperty(result, "Count")
	count := int(countVar.Val)

	for i := 0; i < count; i++ {
		// item is a SWbemObject, but really a Win32_Process
		itemRaw, _ := oleutil.CallMethod(result, "ItemIndex", i)
		item := itemRaw.ToIDispatch()
		defer item.Release()

		asString, _ := oleutil.GetProperty(item, "Name")

		println(asString.ToString())
		friendlyName = asString.ToString()
	}

	return friendlyName
}
Пример #4
0
func main() {
	ole.CoInitialize(0)
	unknown, _ := oleutil.CreateObject("Agent.Control.1")
	agent, _ := unknown.QueryInterface(ole.IID_IDispatch)
	oleutil.PutProperty(agent, "Connected", true)
	characters := oleutil.MustGetProperty(agent, "Characters").ToIDispatch()
	oleutil.CallMethod(characters, "Load", "Merlin", "c:\\windows\\msagent\\chars\\Merlin.acs")
	character := oleutil.MustCallMethod(characters, "Character", "Merlin").ToIDispatch()
	oleutil.CallMethod(character, "Show")
	oleutil.CallMethod(character, "Speak", "こんにちわ世界")

	time.Sleep(4000000000)
}
Пример #5
0
func QueryWmiFields(query string, fields []string) ([]map[string]string, error) {

	if len(fields) == 1 && fields[0] == "*" {
		logging.Errorf("`select * ` not supported, need to address fields explicitly.")
		return nil, fmt.Errorf("`select * ` not supported, need to address fields explicitly.")
	}

	resultRaw, err := oleutil.CallMethod(wmi_service, "ExecQuery", query)
	if err != nil {
		logging.Error("ExecQuery Failed: ", err)
		return nil, fmt.Errorf("ExecQuery Failed: %v", err)
	}
	result := resultRaw.ToIDispatch()
	defer result.Release()

	countVar, err := oleutil.GetProperty(result, "Count")
	if err != nil {
		logging.Errorf("Get result count Failed: %v", err)
		return nil, fmt.Errorf("Get result count Failed: %v", err)
	}
	count := int(countVar.Val)

	resultMap := []map[string]string{}

	for i := 0; i < count; i++ {
		itemMap := make(map[string]string)

		itemRaw, err := oleutil.CallMethod(result, "ItemIndex", i)
		if err != nil {
			return nil, fmt.Errorf("ItemIndex Failed: %v", err)
		}

		item := itemRaw.ToIDispatch()
		defer item.Release()

		for _, field := range fields {
			asString, err := oleutil.GetProperty(item, field)

			if err == nil {
				itemMap[field] = fmt.Sprintf("%v", asString.Value())
			} else {
				fmt.Println(err)
			}
		}

		resultMap = append(resultMap, itemMap)
		logging.Tracef("wmi query result: %+v", itemMap)
	}
	logging.Tracef("wmi query result count: %d", len(resultMap))
	return resultMap, nil
}
Пример #6
0
func (c *win_wmi_collector) query(query string, fields []string) ([]map[string]string, error) {
	if c.service != nil {
		resultRaw, err := oleutil.CallMethod(c.service, "ExecQuery", query)
		if err != nil {
			logging.Error("ExecQuery Failed: ", err)
			return nil, fmt.Errorf("ExecQuery Failed: %v", err)
		}
		result := resultRaw.ToIDispatch()
		defer result.Release()

		countVar, err := oleutil.GetProperty(result, "Count")
		if err != nil {
			logging.Error("Get result count Failed: ", err)
			return nil, fmt.Errorf("Get result count Failed: %v", err)
		}
		count := int(countVar.Val)

		resultMap := []map[string]string{}

		for i := 0; i < count; i++ {
			itemMap := make(map[string]string)

			itemRaw, err := oleutil.CallMethod(result, "ItemIndex", i)
			if err != nil {
				return nil, fmt.Errorf("ItemIndex Failed: %v", err)
			}

			item := itemRaw.ToIDispatch()
			defer item.Release()

			for _, field := range fields {
				asString, err := oleutil.GetProperty(item, field)

				if err == nil {
					itemMap[field] = fmt.Sprintf("%v", asString.Value())
				} else {
					logging.Errorf("cannot find field in SWbemObject: %v", err)
				}
			}

			resultMap = append(resultMap, itemMap)
			logging.Tracef("wmi query result: %+v", itemMap)
		}
		logging.Tracef("wmi query result count: %d", len(resultMap))
		return resultMap, nil
	} else {
		logging.Error("win_wmi_collector c.service is nil")
		return nil, fmt.Errorf("win_wmi_collector c.service is nil")
	}
}
Пример #7
0
func (pt *PowerPoint) open(inFile string) (err error) {

	ole.CoInitialize(0)

	var unknown *ole.IUnknown

	unknown, err = oleutil.CreateObject("PowerPoint.Application")
	if err != nil {
		return
	}

	pt.app, err = unknown.QueryInterface(ole.IID_IDispatch)
	if err != nil {
		return
	}

	_, err = oleutil.PutProperty(pt.app, "DisplayAlerts", 1)
	if err != nil {
		return
	}

	pt.presentations, err = oleutil.GetProperty(pt.app, "Presentations")
	if err != nil {
		return
	}

	pt.ppt, err = oleutil.CallMethod(pt.presentations.ToIDispatch(), "Open", inFile, -1, 0, 0)
	if err != nil {
		return
	}

	return
}
Пример #8
0
func main() {
	ole.CoInitialize(0)

	unknown, _ := oleutil.CreateObject("{248DD896-BB45-11CF-9ABC-0080C7E7B78D}")
	winsock, _ := unknown.QueryInterface(ole.IID_IDispatch)
	iid, _ := ole.CLSIDFromString("{248DD893-BB45-11CF-9ABC-0080C7E7B78D}")

	dest := &EventReceiver{}
	dest.lpVtbl = &EventReceiverVtbl{}
	dest.lpVtbl.pQueryInterface = syscall.NewCallback(QueryInterface)
	dest.lpVtbl.pAddRef = syscall.NewCallback(AddRef)
	dest.lpVtbl.pRelease = syscall.NewCallback(Release)
	dest.lpVtbl.pGetTypeInfoCount = syscall.NewCallback(GetTypeInfoCount)
	dest.lpVtbl.pGetTypeInfo = syscall.NewCallback(GetTypeInfo)
	dest.lpVtbl.pGetIDsOfNames = syscall.NewCallback(GetIDsOfNames)
	dest.lpVtbl.pInvoke = syscall.NewCallback(Invoke)
	dest.host = winsock

	oleutil.ConnectObject(winsock, iid, (*ole.IUnknown)(unsafe.Pointer(dest)))
	_, err := oleutil.CallMethod(winsock, "Connect", "127.0.0.1", 80)
	if err != nil {
		log.Fatal(err)
	}

	var m ole.Msg
	for dest.ref != 0 {
		ole.GetMessage(&m, 0, 0, 0)
		ole.DispatchMessage(&m)
	}
}
Пример #9
0
func (rc *AdodbRows) Close() error {
	_, err := oleutil.CallMethod(rc.rc, "Close")
	if err != nil {
		return err
	}
	return nil
}
Пример #10
0
func (tx *AdodbTx) Commit() error {
	_, err := oleutil.CallMethod(tx.c.db, "CommitTrans")
	if err != nil {
		return err
	}
	return nil
}
Пример #11
0
func (tx *AdodbTx) Rollback() error {
	_, err := oleutil.CallMethod(tx.c.db, "Rollback")
	if err != nil {
		return err
	}
	return nil
}
Пример #12
0
func (c *AdodbConn) Begin() (driver.Tx, error) {
	_, err := oleutil.CallMethod(c.db, "BeginTrans")
	if err != nil {
		return nil, err
	}
	return &AdodbTx{c}, nil
}
Пример #13
0
func (c *win_wmi_collector) connect() (err error) {
	// use COINIT_MULTITHREADED model
	ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED)

	unknown, err := oleutil.CreateObject("WbemScripting.SWbemLocator")
	if err != nil {
		logging.Critical("oleutil.CreateObject Failed: ", err)
		return err
	}
	defer unknown.Release()

	wmi, err := unknown.QueryInterface(ole.IID_IDispatch)
	if err != nil {
		logging.Critical("QueryInterface Failed: ", err)
		return err
	}
	defer wmi.Release()

	serviceRaw, err := oleutil.CallMethod(wmi, "ConnectServer")
	if err != nil {
		logging.Critical("Connect to Server Failed", err)
		return err
	}

	c.service = serviceRaw.ToIDispatch()
	return nil
}
Пример #14
0
func (c *AdodbConn) Close() error {
	_, err := oleutil.CallMethod(c.db, "Close")
	if err != nil {
		return err
	}
	c.db = nil
	ole.CoUninitialize()
	return nil
}
Пример #15
0
func (s *AdodbStmt) Query(args []driver.Value) (driver.Rows, error) {
	if err := s.bind(args); err != nil {
		return nil, err
	}
	rc, err := oleutil.CallMethod(s.s, "Execute")
	if err != nil {
		return nil, err
	}
	return &AdodbRows{s, rc.ToIDispatch(), -1, nil}, nil
}
Пример #16
0
func (s *AdodbStmt) Exec(args []driver.Value) (driver.Result, error) {
	if err := s.bind(args); err != nil {
		return nil, err
	}
	_, err := oleutil.CallMethod(s.s, "Execute")
	if err != nil {
		return nil, err
	}
	return driver.ResultNoRows, nil
}
Пример #17
0
func main() {
	ole.CoInitialize(0)
	unknown, _ := oleutil.CreateObject("Excel.Application")
	excel, _ := unknown.QueryInterface(ole.IID_IDispatch)
	oleutil.PutProperty(excel, "Visible", true)
	workbooks := oleutil.MustGetProperty(excel, "Workbooks").ToIDispatch()
	workbook := oleutil.MustCallMethod(workbooks, "Add", nil).ToIDispatch()
	worksheet := oleutil.MustGetProperty(workbook, "Worksheets", 1).ToIDispatch()
	cell := oleutil.MustGetProperty(worksheet, "Cells", 1, 1).ToIDispatch()
	oleutil.PutProperty(cell, "Value", 12345)

	time.Sleep(2000000000)

	oleutil.PutProperty(workbook, "Saved", true)
	oleutil.CallMethod(workbook, "Close", false)
	oleutil.CallMethod(excel, "Quit")
	excel.Release()

	ole.CoUninitialize()
}
Пример #18
0
func (s *AdodbStmt) bind(args []driver.Value) error {
	if s.b != nil {
		for i, v := range args {
			var b string = "?"
			if len(s.b) < i {
				b = s.b[i]
			}
			unknown, err := oleutil.CallMethod(s.s, "CreateParameter", b, 12, 1)
			if err != nil {
				return err
			}
			param := unknown.ToIDispatch()
			defer param.Release()
			_, err = oleutil.PutProperty(param, "Value", v)
			if err != nil {
				return err
			}
			_, err = oleutil.CallMethod(s.ps, "Append", param)
			if err != nil {
				return err
			}
		}
	} else {
		for i, v := range args {
			var varval ole.VARIANT
			varval.VT = ole.VT_I4
			varval.Val = int64(i)
			val, err := oleutil.CallMethod(s.ps, "Item", &varval)
			if err != nil {
				return err
			}
			item := val.ToIDispatch()
			defer item.Release()
			_, err = oleutil.PutProperty(item, "Value", v)
			if err != nil {
				return err
			}
		}
	}
	return nil
}
Пример #19
0
func createMdb(f string) error {
	unk, err := oleutil.CreateObject("ADOX.Catalog")
	if err != nil {
		return err
	}
	cat, err := unk.QueryInterface(ole.IID_IDispatch)
	if err != nil {
		return err
	}
	_, err = oleutil.CallMethod(cat, "Create", "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+f+";")
	if err != nil {
		return err
	}
	return nil
}
Пример #20
0
func (s *AdodbStmt) NumInput() int {
	if s.b != nil {
		return len(s.b)
	}
	_, err := oleutil.CallMethod(s.ps, "Refresh")
	if err != nil {
		return -1
	}
	val, err := oleutil.GetProperty(s.ps, "Count")
	if err != nil {
		return -1
	}
	c := int(val.Val)
	return c
}
Пример #21
0
func (d *AdodbDriver) Open(dsn string) (driver.Conn, error) {
	ole.CoInitialize(0)
	unknown, err := oleutil.CreateObject("ADODB.Connection")
	if err != nil {
		return nil, err
	}
	db, err := unknown.QueryInterface(ole.IID_IDispatch)
	if err != nil {
		return nil, err
	}
	_, err = oleutil.CallMethod(db, "Open", dsn)
	if err != nil {
		return nil, err
	}
	return &AdodbConn{db}, nil
}
Пример #22
0
func main() {
	ole.CoInitialize(0)
	unknown, _ := oleutil.CreateObject("InternetExplorer.Application")
	ie, _ := unknown.QueryInterface(ole.IID_IDispatch)
	oleutil.CallMethod(ie, "Navigate", "http://www.google.com")
	oleutil.PutProperty(ie, "Visible", true)
	for {
		if oleutil.MustGetProperty(ie, "Busy").Val == 0 {
			break
		}
	}

	time.Sleep(1e9)

	document := oleutil.MustGetProperty(ie, "document").ToIDispatch()
	window := oleutil.MustGetProperty(document, "parentWindow").ToIDispatch()
	// set 'golang' to text box.
	oleutil.MustCallMethod(window, "eval", "document.getElementsByName('q')[0].value = 'golang'")
	// click btnG.
	btnG := oleutil.MustCallMethod(window, "eval", "document.getElementsByName('btnG')[0]").ToIDispatch()
	oleutil.MustCallMethod(btnG, "click")
}
Пример #23
0
func (wd *Word) open(inFile string) (err error) {

	ole.CoInitialize(0)

	var unknown *ole.IUnknown

	unknown, err = oleutil.CreateObject("Word.Application")
	if err != nil {
		return
	}

	wd.app, err = unknown.QueryInterface(ole.IID_IDispatch)
	if err != nil {
		return
	}

	_, err = oleutil.PutProperty(wd.app, "Visible", false)
	if err != nil {
		return
	}

	_, err = oleutil.PutProperty(wd.app, "DisplayAlerts", 0)
	if err != nil {
		return
	}

	wd.documents, err = oleutil.GetProperty(wd.app, "Documents")
	if err != nil {
		return
	}

	wd.doc, err = oleutil.CallMethod(wd.documents.ToIDispatch(), "Open", inFile)
	if err != nil {
		return
	}

	return
}
Пример #24
0
func (wd *Word) Export(inFile, outDir string) (outFile string, err error) {

	outFile = filepath.Join(outDir, filepath.Base(inFile+".pdf"))

	defer func() {
		if err != nil {
			outFile = ""
		}
		wd.close()
	}()

	err = wd.open(inFile)
	if err != nil {
		return
	}

	_, err = oleutil.CallMethod(wd.doc.ToIDispatch(), "ExportAsFixedFormat", outFile, 17)
	if err != nil {
		return
	}

	return
}
Пример #25
0
func (pt *PowerPoint) Export(inFile, outDir string) (outFile string, err error) {

	outFile = filepath.Join(outDir, filepath.Base(inFile+".pdf"))

	defer func() {
		if err != nil {
			outFile = ""
		}
		pt.close()
	}()

	err = pt.open(inFile)
	if err != nil {
		return
	}

	_, err = oleutil.CallMethod(pt.ppt.ToIDispatch(), "SaveAs", outFile, 32)
	if err != nil {
		return
	}

	return
}
Пример #26
0
func init() {
	ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED)

	unknown, err := oleutil.CreateObject("WbemScripting.SWbemLocator")
	if err != nil {
		logging.Criticalf("oleutil.CreateObject Failed: %v", err)
		panic(err)
	}
	defer unknown.Release()

	wmi, err := unknown.QueryInterface(ole.IID_IDispatch)
	if err != nil {
		logging.Criticalf("QueryInterface Failed: %v", err)
		panic(err)
	}
	defer wmi.Release()

	serviceRaw, err := oleutil.CallMethod(wmi, "ConnectServer")
	if err != nil {
		logging.Criticalf("Connect to Server Failed: %v", err)
		panic(err)
	}
	wmi_service = serviceRaw.ToIDispatch()
}
Пример #27
0
func (rc *AdodbRows) Columns() []string {
	if rc.nc != len(rc.cols) {
		unknown, err := oleutil.GetProperty(rc.rc, "Fields")
		if err != nil {
			return []string{}
		}
		fields := unknown.ToIDispatch()
		defer fields.Release()
		val, err := oleutil.GetProperty(fields, "Count")
		if err != nil {
			return []string{}
		}
		rc.nc = int(val.Val)
		rc.cols = make([]string, rc.nc)
		for i := 0; i < rc.nc; i++ {
			var varval ole.VARIANT
			varval.VT = ole.VT_I4
			varval.Val = int64(i)
			val, err := oleutil.CallMethod(fields, "Item", &varval)
			if err != nil {
				return []string{}
			}
			item := val.ToIDispatch()
			if err != nil {
				return []string{}
			}
			name, err := oleutil.GetProperty(item, "Name")
			if err != nil {
				return []string{}
			}
			rc.cols[i] = name.ToString()
			item.Release()
		}
	}
	return rc.cols
}
Пример #28
0
func (c *AdodbConn) exec(cmd string) error {
	_, err := oleutil.CallMethod(c.db, "Execute", cmd)
	return err
}
Пример #29
0
func (rc *AdodbRows) Next(dest []driver.Value) error {
	unknown, err := oleutil.GetProperty(rc.rc, "EOF")
	if err != nil {
		return io.EOF
	}
	if unknown.Val != 0 {
		return io.EOF
	}
	unknown, err = oleutil.GetProperty(rc.rc, "Fields")
	if err != nil {
		return err
	}
	fields := unknown.ToIDispatch()
	defer fields.Release()
	for i := range dest {
		var varval ole.VARIANT
		varval.VT = ole.VT_I4
		varval.Val = int64(i)
		val, err := oleutil.CallMethod(fields, "Item", &varval)
		if err != nil {
			return err
		}
		field := val.ToIDispatch()
		defer field.Release()
		typ, err := oleutil.GetProperty(field, "Type")
		if err != nil {
			return err
		}
		val, err = oleutil.GetProperty(field, "Value")
		if err != nil {
			return err
		}
		sc, err := oleutil.GetProperty(field, "NumericScale")
		field.Release()
		if val.VT == 1 /* VT_NULL */ {
			dest[i] = nil
			continue
		}
		switch typ.Val {
		case 0: // ADEMPTY
			dest[i] = nil
		case 2: // ADSMALLINT
			dest[i] = int64(int16(val.Val))
		case 3: // ADINTEGER
			dest[i] = int64(int32(val.Val))
		case 4: // ADSINGLE
			dest[i] = float64(math.Float32frombits(uint32(val.Val)))
		case 5: // ADDOUBLE
			dest[i] = math.Float64frombits(uint64(val.Val))
		case 6: // ADCURRENCY
			dest[i] = float64(val.Val) / 10000
		case 7: // ADDATE
			// see http://blogs.msdn.com/b/ericlippert/archive/2003/09/16/eric-s-complete-guide-to-vt-date.aspx
			d, t := math.Modf(math.Float64frombits(uint64(val.Val)))
			t = math.Abs(t)
			dest[i] = time.Date(1899, 12, 30+int(d), 0, 0, int(t*86400), 0, time.Local)
		case 8: // ADBSTR
			dest[i] = val.ToString()
		case 9: // ADIDISPATCH
			dest[i] = val.ToIDispatch()
		case 10: // ADERROR
			// TODO
		case 11: // ADBOOLEAN
			dest[i] = val.Val != 0
		case 12: // ADVARIANT
			dest[i] = val
		case 13: // ADIUNKNOWN
			dest[i] = val.ToIUnknown()
		case 14: // ADDECIMAL
			dest[i] = float64(val.Val)
		case 16: // ADTINYINT
			dest[i] = int8(val.Val)
		case 17: // ADUNSIGNEDTINYINT
			dest[i] = uint8(val.Val)
		case 18: // ADUNSIGNEDSMALLINT
			dest[i] = uint16(val.Val)
		case 19: // ADUNSIGNEDINT
			dest[i] = uint32(val.Val)
		case 20: // ADBIGINT
			dest[i] = big.NewInt(val.Val)
		case 21: // ADUNSIGNEDBIGINT
			// TODO
		case 72: // ADGUID
			dest[i] = val.ToString()
		case 128: // ADBINARY
			sa := (*ole.SAFEARRAY)(unsafe.Pointer(uintptr(val.Val)))
			dest[i] = (*[1 << 30]byte)(unsafe.Pointer(uintptr(sa.Data)))[0:sa.Bounds.Elements]
		case 129: // ADCHAR
			dest[i] = val.ToString() //uint8(val.Val)
		case 130: // ADWCHAR
			dest[i] = val.ToString() //uint16(val.Val)
		case 131: // ADNUMERIC
			sub := math.Pow(10, float64(sc.Val))
			dest[i] = float64(float64(val.Val) / sub)
		case 132: // ADUSERDEFINED
			dest[i] = uintptr(val.Val)
		case 133: // ADDBDATE
			// see http://blogs.msdn.com/b/ericlippert/archive/2003/09/16/eric-s-complete-guide-to-vt-date.aspx
			d := math.Float64frombits(uint64(val.Val))
			dest[i] = time.Date(1899, 12, 30+int(d), 0, 0, 0, 0, time.Local)
		case 134: // ADDBTIME
			t := math.Float64frombits(uint64(val.Val))
			dest[i] = time.Date(0, 1, 1, 0, 0, int(t*86400), 0, time.Local)
		case 135: // ADDBTIMESTAMP
			d, t := math.Modf(math.Float64frombits(uint64(val.Val)))
			t = math.Abs(t)
			dest[i] = time.Date(1899, 12, 30+int(d), 0, 0, int(t*86400), 0, time.Local)
		case 136: // ADCHAPTER
			dest[i] = val.ToString()
		case 200: // ADVARCHAR
			dest[i] = val.ToString()
		case 201: // ADLONGVARCHAR
			dest[i] = val.ToString()
		case 202: // ADVARWCHAR
			dest[i] = val.ToString()
		case 203: // ADLONGVARWCHAR
			dest[i] = val.ToString()
		case 204: // ADVARBINARY
			// TODO
		case 205: // ADLONGVARBINARY
			sa := (*ole.SAFEARRAY)(unsafe.Pointer(uintptr(val.Val)))
			dest[i] = (*[1 << 30]byte)(unsafe.Pointer(uintptr(sa.Data)))[0:sa.Bounds.Elements]
		}
	}
	_, err = oleutil.CallMethod(rc.rc, "MoveNext")
	if err != nil {
		return err
	}
	return nil
}
func getListViaWmiPnpEntity() ([]OsSerialPort, os.SyscallError) {

	//log.Println("Doing getListViaWmiPnpEntity()")

	// this method panics a lot and i'm not sure why, just catch
	// the panic and return empty list
	defer func() {
		if e := recover(); e != nil {
			// e is the interface{} typed-value we passed to panic()
			log.Println("Got panic: ", e) // Prints "Whoops: boom!"
		}
	}()

	var err os.SyscallError

	//var friendlyName string

	// init COM, oh yeah
	ole.CoInitialize(0)
	defer ole.CoUninitialize()

	unknown, _ := oleutil.CreateObject("WbemScripting.SWbemLocator")
	defer unknown.Release()

	wmi, _ := unknown.QueryInterface(ole.IID_IDispatch)
	defer wmi.Release()

	// service is a SWbemServices
	serviceRaw, _ := oleutil.CallMethod(wmi, "ConnectServer")
	service := serviceRaw.ToIDispatch()
	defer service.Release()

	// result is a SWBemObjectSet
	//pname := syscall.StringToUTF16("SELECT * FROM Win32_PnPEntity where Name like '%" + "COM35" + "%'")
	pname := "SELECT * FROM Win32_PnPEntity WHERE ConfigManagerErrorCode = 0 and Name like '%(COM%'"
	//pname := "SELECT * FROM Win32_PnPEntity WHERE ConfigManagerErrorCode = 0"
	resultRaw, err2 := oleutil.CallMethod(service, "ExecQuery", pname)
	//log.Println("Got result from oleutil.CallMethod")
	if err2 != nil {
		// we got back an error or empty list
		log.Printf("Got an error back from oleutil.CallMethod. err:%v", err2)
		return nil, err
	}

	result := resultRaw.ToIDispatch()
	defer result.Release()

	countVar, _ := oleutil.GetProperty(result, "Count")
	count := int(countVar.Val)

	list := make([]OsSerialPort, count)

	for i := 0; i < count; i++ {

		// items we're looping thru look like below and
		// thus we can query for any of these names
		/*
					__GENUS                     : 2
			__CLASS                     : Win32_PnPEntity
			__SUPERCLASS                : CIM_LogicalDevice
			__DYNASTY                   : CIM_ManagedSystemElement
			__RELPATH                   : Win32_PnPEntity.DeviceID="USB\\VID_1D50&PID_606D&MI_02\\6&2F09EA14&0&0002"
			__PROPERTY_COUNT            : 24
			__DERIVATION                : {CIM_LogicalDevice, CIM_LogicalElement, CIM_ManagedSystemElement}
			__SERVER                    : JOHN-ATIV
			__NAMESPACE                 : root\cimv2
			__PATH                      : \\JOHN-ATIV\root\cimv2:Win32_PnPEntity.DeviceID="USB\\VID_1D50&PID_606D&MI_02\\6&2F09EA14
			                              &0&0002"
			Availability                :
			Caption                     : TinyG v2 (Data Channel) (COM12)
			ClassGuid                   : {4d36e978-e325-11ce-bfc1-08002be10318}
			CompatibleID                : {USB\Class_02&SubClass_02&Prot_01, USB\Class_02&SubClass_02, USB\Class_02}
			ConfigManagerErrorCode      : 0
			ConfigManagerUserConfig     : False
			CreationClassName           : Win32_PnPEntity
			Description                 : TinyG v2 (Data Channel)
			DeviceID                    : USB\VID_1D50&PID_606D&MI_02\6&2F09EA14&0&0002
			ErrorCleared                :
			ErrorDescription            :
			HardwareID                  : {USB\VID_1D50&PID_606D&REV_0097&MI_02, USB\VID_1D50&PID_606D&MI_02}
			InstallDate                 :
			LastErrorCode               :
			Manufacturer                : Synthetos (www.synthetos.com)
			Name                        : TinyG v2 (Data Channel) (COM12)
			PNPDeviceID                 : USB\VID_1D50&PID_606D&MI_02\6&2F09EA14&0&0002
			PowerManagementCapabilities :
			PowerManagementSupported    :
			Service                     : usbser
			Status                      : OK
			StatusInfo                  :
			SystemCreationClassName     : Win32_ComputerSystem
			SystemName                  : JOHN-ATIV
			PSComputerName              : JOHN-ATIV
		*/

		// item is a SWbemObject, but really a Win32_Process
		itemRaw, _ := oleutil.CallMethod(result, "ItemIndex", i)
		item := itemRaw.ToIDispatch()
		defer item.Release()

		asString, _ := oleutil.GetProperty(item, "Name")

		//log.Println(asString.ToString())

		// get the com port
		//if false {
		s := strings.Split(asString.ToString(), "(COM")[1]
		s = "COM" + s
		s = strings.Split(s, ")")[0]
		list[i].Name = s
		//}

		// get the deviceid so we can figure out related ports
		// it will look similar to
		// USB\VID_1D50&PID_606D&MI_00\6&2F09EA14&0&0000
		deviceIdStr, _ := oleutil.GetProperty(item, "DeviceID")
		devIdItems := strings.Split(deviceIdStr.ToString(), "&")
		log.Printf("DeviceId elements:%v", devIdItems)
		if len(devIdItems) > 3 {
			list[i].SerialNumber = devIdItems[3]
			list[i].IdProduct = strings.Replace(devIdItems[1], "PID_", "", 1)
			list[i].IdVendor = strings.Replace(devIdItems[0], "USB\\VID_", "", 1)
		} else {
			list[i].SerialNumber = deviceIdStr.ToString()
			pidMatch := regexp.MustCompile("PID_(\\d+)").FindAllStringSubmatch(deviceIdStr.ToString(), -1)
			if len(pidMatch) > 0 {
				if len(pidMatch[0]) > 1 {
					list[i].IdProduct = pidMatch[0][1]
				}
			}
			vidMatch := regexp.MustCompile("VID_(\\d+)").FindAllStringSubmatch(deviceIdStr.ToString(), -1)
			if len(vidMatch) > 0 {
				if len(vidMatch[0]) > 1 {
					list[i].IdVendor = vidMatch[0][1]
				}
			}
		}

		list[i].IdVendor = "0x" + list[i].IdVendor
		list[i].IdProduct = "0x" + list[i].IdProduct

		manufStr, _ := oleutil.GetProperty(item, "Manufacturer")
		list[i].Manufacturer = manufStr.ToString()
		descStr, _ := oleutil.GetProperty(item, "Description")
		list[i].Product = descStr.ToString()
		//classStr, _ := oleutil.GetProperty(item, "CreationClassName")
		//list[i].DeviceClass = classStr.ToString()

	}

	return list, err
}