XSendfile.php

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<?php
 
namespace ILIAS\FileDelivery\FileDeliveryTypes;
 
use ILIAS\FileDelivery\ilFileDeliveryType;
use ILIAS\HTTP\GlobalHttpState;
 
require_once('./Services/FileDelivery/interfaces/int.ilFileDeliveryType.php');
 
final class XSendfile implements ilFileDeliveryType
{
    use HeaderBasedDeliveryHelper;
    const X_SENDFILE = 'X-Sendfile';
    const X_SENDFILE_TEMPORARY = 'X-Sendfile-Temporary';
    private $httpService;
 
 
    public function __construct(GlobalHttpState $httpState)
    {
        $this->httpService = $httpState;
    }
 
 
    public function doesFileExists($path_to_file)
    {
        return is_readable($path_to_file);
    }
 
 
    public function prepare($path_to_file)
    {
        //      Nothing has to be done here
        return true;
    }
 
 
    public function deliver($path_to_file, $file_marked_to_delete)
    {
        $delivery = function () use ($path_to_file) {
            $response = $this->httpService->response()
                ->withHeader(self::X_SENDFILE, realpath($path_to_file));
            $this->httpService->saveResponse($response);
            $this->httpService->sendResponse();
        };
 
        if ($file_marked_to_delete) {
            $this->sendFileUnbufferedUsingHeaders($delivery);
        } else {
            $delivery();
        }
 
        return true;
    }
 
 
    public function supportsInlineDelivery()
    {
        return true;
    }
 
 
    public function supportsAttachmentDelivery()
    {
        return true;
    }
 
 
    public function supportsStreaming()
    {
        return true;
    }
 
 
    public function handleFileDeletion($path_to_file)
    {
        unlink($path_to_file);
    }
}