Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

internal/go-ole/oleutil/connection_windows.go

@@ -0,0 +1,58 @@
+//go:build windows
+
+package oleutil
+
+import (
+	"reflect"
+	"syscall"
+	"unsafe"
+
+	ole "github.com/gofiber/fiber/v2/internal/go-ole"
+)
+
+// ConnectObject creates a connection point between two services for communication.
+func ConnectObject(disp *ole.IDispatch, iid *ole.GUID, idisp interface{}) (cookie uint32, err error) {
+	unknown, err := disp.QueryInterface(ole.IID_IConnectionPointContainer)
+	if err != nil {
+		return
+	}
+
+	container := (*ole.IConnectionPointContainer)(unsafe.Pointer(unknown))
+	var point *ole.IConnectionPoint
+	err = container.FindConnectionPoint(iid, &point)
+	if err != nil {
+		return
+	}
+	if edisp, ok := idisp.(*ole.IUnknown); ok {
+		cookie, err = point.Advise(edisp)
+		container.Release()
+		if err != nil {
+			return
+		}
+	}
+	rv := reflect.ValueOf(disp).Elem()
+	if rv.Type().Kind() == reflect.Struct {
+		dest := &stdDispatch{}
+		dest.lpVtbl = &stdDispatchVtbl{}
+		dest.lpVtbl.pQueryInterface = syscall.NewCallback(dispQueryInterface)
+		dest.lpVtbl.pAddRef = syscall.NewCallback(dispAddRef)
+		dest.lpVtbl.pRelease = syscall.NewCallback(dispRelease)
+		dest.lpVtbl.pGetTypeInfoCount = syscall.NewCallback(dispGetTypeInfoCount)
+		dest.lpVtbl.pGetTypeInfo = syscall.NewCallback(dispGetTypeInfo)
+		dest.lpVtbl.pGetIDsOfNames = syscall.NewCallback(dispGetIDsOfNames)
+		dest.lpVtbl.pInvoke = syscall.NewCallback(dispInvoke)
+		dest.iface = disp
+		dest.iid = iid
+		cookie, err = point.Advise((*ole.IUnknown)(unsafe.Pointer(dest)))
+		container.Release()
+		if err != nil {
+			point.Release()
+			return
+		}
+		return
+	}
+
+	container.Release()
+
+	return 0, ole.NewError(ole.E_INVALIDARG)
+}