webdav

var Command = &cobra.Command{
	Use:   "webdav remote:path",
	Short: `Serve remote:path over WebDAV.`,
	Long: `Run a basic WebDAV server to serve a remote over HTTP via the
WebDAV protocol. This can be viewed with a WebDAV client, through a web
browser, or you can make a remote of type WebDAV to read and write it.

### WebDAV options

#### --etag-hash 

This controls the ETag header.  Without this flag the ETag will be
based on the ModTime and Size of the object.

If this flag is set to "auto" then rclone will choose the first
supported hash on the backend or you can use a named hash such as
"MD5" or "SHA-1". Use the [hashsum](/commands/rclone_hashsum/) command
to see the full list.

### Access WebDAV on Windows
WebDAV shared folder can be mapped as a drive on Windows, however the default settings prevent it.
Windows will fail to connect to the server using insecure Basic authentication.
It will not even display any login dialog. Windows requires SSL / HTTPS connection to be used with Basic.
If you try to connect via Add Network Location Wizard you will get the following error:
"The folder you entered does not appear to be valid. Please choose another".
However, you still can connect if you set the following registry key on a client machine:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters\BasicAuthLevel to 2.
The BasicAuthLevel can be set to the following values:
    0 - Basic authentication disabled
    1 - Basic authentication enabled for SSL connections only
    2 - Basic authentication enabled for SSL connections and for non-SSL connections
If required, increase the FileSizeLimitInBytes to a higher value.
Navigate to the Services interface, then restart the WebClient service.

### Access Office applications on WebDAV
Navigate to following registry HKEY_CURRENT_USER\Software\Microsoft\Office\[14.0/15.0/16.0]\Common\Internet
Create a new DWORD BasicAuthLevel with value 2.
    0 - Basic authentication disabled
    1 - Basic authentication enabled for SSL connections only
    2 - Basic authentication enabled for SSL and for non-SSL connections

https://learn.microsoft.com/en-us/office/troubleshoot/powerpoint/office-opens-blank-from-sharepoint

` + libhttp.Help(flagPrefix) + libhttp.TemplateHelp(flagPrefix) + libhttp.AuthHelp(flagPrefix) + vfs.Help + proxy.Help,
	Annotations: map[string]string{
		"versionIntroduced": "v1.39",
		"groups":            "Filter",
	},
	RunE: func(command *cobra.Command, args []string) error {
		var f fs.Fs
		if proxyflags.Opt.AuthProxy == "" {
			cmd.CheckArgs(1, 1, command, args)
			f = cmd.NewFsSrc(args)
		} else {
			cmd.CheckArgs(0, 0, command, args)
		}
		Opt.HashType = hash.None
		if Opt.HashName == "auto" {
			Opt.HashType = f.Hashes().GetOne()
		} else if Opt.HashName != "" {
			err := Opt.HashType.Set(Opt.HashName)
			if err != nil {
				return err
			}
		}
		if Opt.HashType != hash.None {
			fs.Debugf(f, "Using hash %v for ETag", Opt.HashType)
		}
		cmd.Run(false, false, command, func() error {
			s, err := newWebDAV(context.Background(), f, &Opt)
			if err != nil {
				return err
			}
			err = s.serve()
			if err != nil {
				return err
			}
			defer systemd.Notify()()
			s.Wait()
			return nil
		})
		return nil
	},
}

var DefaultOpt = Options{
	Auth:          libhttp.DefaultAuthCfg(),
	HTTP:          libhttp.DefaultCfg(),
	Template:      libhttp.DefaultTemplateCfg(),
	HashType:      hash.None,
	DisableGETDir: false,
}

var Opt = DefaultOpt