/// <summary>
/// Obtains the size of the file in the file system.
/// </summary>
/// <param name="arguments">Command arguments</param>
/// <param name="session">FTP session context</param>
/// <param name="cancellation">Cancellation token</param>
/// <returns>FTP server response to send to the client.</returns>
protected override async Task <IResponse> Handle(string arguments, FtpSessionState session, CancellationToken cancellation)
{
if (String.IsNullOrEmpty(arguments))
{
return(FtpResponses.ParameterSyntaxError);
}
if (session.TransferType != FileTransferType.Image)
{
// Only return size in Image file transfer mode
return(FtpResponses.FileUnavailable);
}
var itemPath = session.CurrentDirectory.Clone();
FileSystemItem item = null;
if (itemPath.Navigate(arguments))
{
item = await session.FileSystem.GetItem(itemPath, cancellation);
}
if (item == null || item.IsDirectory)
{
return(FtpResponses.FileUnavailable);
}
return(FtpResponses.FileStatus(item.Size.ToString(CultureInfo.InvariantCulture)));
}
/// <summary>
/// Obtains the last modification time of the file system item.
/// </summary>
/// <param name="arguments">Command arguments</param>
/// <param name="session">FTP session context</param>
/// <param name="cancellation">Cancellation token</param>
/// <returns>FTP server response to send to the client.</returns>
protected override async Task <IResponse> Handle(string arguments, FtpSessionState session, CancellationToken cancellation)
{
if (String.IsNullOrEmpty(arguments))
{
return(FtpResponses.ParameterSyntaxError);
}
var itemPath = session.CurrentDirectory.Clone();
FileSystemItem item = null;
if (itemPath.Navigate(arguments))
{
item = await session.FileSystem.GetItem(itemPath, cancellation);
}
if (item == null)
{
return(FtpResponses.FileUnavailable);
}
return(FtpResponses.FileStatus(
item.LastModifiedTime.ToString(TimestampFormat, CultureInfo.InvariantCulture)));
}