158 lines
3.1 KiB
Go
158 lines
3.1 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build windows
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// +build windows
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package winnet
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import (
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"fmt"
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"unsafe"
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"github.com/go-ole/go-ole"
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"github.com/go-ole/go-ole/oleutil"
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)
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const CLSID_NetworkListManager = "{DCB00C01-570F-4A9B-8D69-199FDBA5723B}"
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var IID_INetwork = ole.NewGUID("{8A40A45D-055C-4B62-ABD7-6D613E2CEAEC}")
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var IID_INetworkConnection = ole.NewGUID("{DCB00005-570F-4A9B-8D69-199FDBA5723B}")
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type NetworkListManager struct {
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d *ole.Dispatch
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}
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type INetworkConnection struct {
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ole.IDispatch
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}
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type ConnectionList []*INetworkConnection
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type INetworkConnectionVtbl struct {
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ole.IDispatchVtbl
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GetNetwork uintptr
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Get_IsConnectedToInternet uintptr
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Get_IsConnected uintptr
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GetConnectivity uintptr
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GetConnectionId uintptr
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GetAdapterId uintptr
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GetDomainType uintptr
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}
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type INetwork struct {
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ole.IDispatch
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}
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func NewNetworkListManager(c *ole.Connection) (*NetworkListManager, error) {
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err := c.Create(CLSID_NetworkListManager)
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if err != nil {
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return nil, err
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}
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defer c.Release()
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d, err := c.Dispatch()
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if err != nil {
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return nil, err
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}
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return &NetworkListManager{
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d: d,
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}, nil
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}
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func (m *NetworkListManager) Release() {
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m.d.Release()
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}
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func (cl ConnectionList) Release() {
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for _, v := range cl {
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v.Release()
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}
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}
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func asIID(u ole.UnknownLike, iid *ole.GUID) (*ole.IDispatch, error) {
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if u == nil {
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return nil, fmt.Errorf("asIID: nil UnknownLike")
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}
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d, err := u.QueryInterface(iid)
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u.Release()
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if err != nil {
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return nil, err
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}
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return d, nil
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}
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func (m *NetworkListManager) GetNetworkConnections() (ConnectionList, error) {
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ncraw, err := m.d.Call("GetNetworkConnections")
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if err != nil {
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return nil, err
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}
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nli := ncraw.ToIDispatch()
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if nli == nil {
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return nil, fmt.Errorf("GetNetworkConnections: not IDispatch")
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}
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cl := ConnectionList{}
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err = oleutil.ForEach(nli, func(v *ole.VARIANT) error {
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nc, err := asIID(v.ToIUnknown(), IID_INetworkConnection)
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if err != nil {
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return err
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}
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nco := (*INetworkConnection)(unsafe.Pointer(nc))
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cl = append(cl, nco)
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return nil
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})
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if err != nil {
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cl.Release()
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return nil, err
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}
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return cl, nil
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}
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func (n *INetwork) GetName() (string, error) {
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v, err := n.CallMethod("GetName")
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if err != nil {
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return "", err
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}
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return v.ToString(), err
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}
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func (n *INetwork) GetCategory() (int32, error) {
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v, err := n.CallMethod("GetCategory")
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if err != nil {
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return 0, err
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}
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return v.Value().(int32), err
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}
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func (n *INetwork) SetCategory(v uint32) error {
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_, err := n.CallMethod("SetCategory", v)
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return err
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}
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func (v *INetworkConnection) VTable() *INetworkConnectionVtbl {
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return (*INetworkConnectionVtbl)(unsafe.Pointer(v.RawVTable))
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}
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func (v *INetworkConnection) GetNetwork() (*INetwork, error) {
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nraw, err := v.CallMethod("GetNetwork")
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if err != nil {
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return nil, err
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}
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n := nraw.ToIDispatch()
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if n == nil {
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return nil, fmt.Errorf("GetNetwork: nil IDispatch")
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}
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if err != nil {
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return nil, err
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}
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return (*INetwork)(unsafe.Pointer(n)), nil
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}
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