79 lines
2.6 KiB
Go
79 lines
2.6 KiB
Go
/*
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Copyright 2022 Zheng Dayu
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package windowsupdate
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import (
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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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// IUpdateDownloader downloads updates from the server.
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// https://docs.microsoft.com/en-us/windows/win32/api/wuapi/nn-wuapi-iupdatedownloaders
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type IUpdateDownloader struct {
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disp *ole.IDispatch
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ClientApplicationID string
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IsForced bool
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Priority int32 // enum https://docs.microsoft.com/en-us/windows/win32/api/wuapi/ne-wuapi-downloadpriority
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Updates []*IUpdate
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}
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func toIUpdateDownloader(updateDownloaderDisp *ole.IDispatch) (*IUpdateDownloader, error) {
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var err error
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iUpdateDownloader := &IUpdateDownloader{
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disp: updateDownloaderDisp,
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}
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if iUpdateDownloader.ClientApplicationID, err = toStringErr(oleutil.GetProperty(updateDownloaderDisp, "ClientApplicationID")); err != nil {
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return nil, err
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}
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if iUpdateDownloader.IsForced, err = toBoolErr(oleutil.GetProperty(updateDownloaderDisp, "IsForced")); err != nil {
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return nil, err
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}
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if iUpdateDownloader.Priority, err = toInt32Err(oleutil.GetProperty(updateDownloaderDisp, "Priority")); err != nil {
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return nil, err
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}
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updatesDisp, err := toIDispatchErr(oleutil.GetProperty(updateDownloaderDisp, "Updates"))
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if err != nil {
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return nil, err
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}
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if updatesDisp != nil {
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if iUpdateDownloader.Updates, err = toIUpdates(updatesDisp); err != nil {
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return nil, err
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}
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}
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return iUpdateDownloader, nil
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}
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// Download starts a synchronous download of the content files that are associated with the updates.
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// https://docs.microsoft.com/en-us/windows/win32/api/wuapi/nf-wuapi-iupdatedownloader-download
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func (iUpdateDownloader *IUpdateDownloader) Download(updates []*IUpdate) (*IDownloadResult, error) {
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updatesDisp, err := toIUpdateCollection(updates)
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if err != nil {
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return nil, err
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}
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if _, err = oleutil.PutProperty(iUpdateDownloader.disp, "Updates", updatesDisp); err != nil {
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return nil, err
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}
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downloadResultDisp, err := toIDispatchErr(oleutil.CallMethod(iUpdateDownloader.disp, "Download"))
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if err != nil {
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return nil, err
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}
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return toIDownloadResult(downloadResultDisp)
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}
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