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<?php
/**
* @package Phoca Gallery
* @author Jan Pavelka - https://www.phoca.cz
* @copyright Copyright (C) Jan Pavelka https://www.phoca.cz
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 and later
* @cms Joomla
* @copyright Copyright (C) Open Source Matters. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
*/
defined( '_JEXEC' ) or die( 'Restricted access' );
use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Filesystem\File;
jimport( 'joomla.filesystem.folder' );
jimport( 'joomla.filesystem.file' );
class PhocaGalleryFileDownload
{
public static function download($item, $backLink, $extLink = 0) {
// If you comment or remove the following line, user will be able to download external images
// but it can happen that such will be stored on your server in root (the example is picasa images)
$extLink = 0;
$app = Factory::getApplication();
if (empty($item)) {
$msg = Text::_('COM_PHOCAGALLERY_ERROR_DOWNLOADING_FILE');
$app->enqueueMessage($msg, 'error');
$app->redirect($backLink);
return false;
} else {
if ($extLink == 0) {
phocagalleryimport('phocagallery.file.file');
$fileOriginal = PhocaGalleryFile::getFileOriginal($item->filenameno);
if (!File::exists($fileOriginal)) {
$msg = Text::_('COM_PHOCAGALLERY_ERROR_DOWNLOADING_FILE');
$app->enqueueMessage($msg, 'error');
$app->redirect($backLink);
return false;
}
$fileToDownload = $item->filenameno;
$fileNameToDownload = $item->filename;
} else {
$fileToDownload = $item->exto;
$fileNameToDownload = $item->title;
$fileOriginal = $item->exto;
}
// Clears file status cache
clearstatcache();
$fileOriginal = $fileOriginal;
$fileSize = @filesize($fileOriginal);
$mimeType = PhocaGalleryFile::getMimeType($fileToDownload);
$fileName = $fileNameToDownload;
if ($extLink > 0) {
$content = '';
if (function_exists('curl_init')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $fileOriginal);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$downloadedFile = fopen($fileName, 'w+');
curl_setopt($ch, CURLOPT_FILE, $downloadedFile);
$content = curl_exec ($ch);
$fileSize= strlen($content);
curl_close ($ch);
fclose($downloadedFile);
}
if ($content != '') {
// Clean the output buffer
ob_end_clean();
header("Cache-Control: public, must-revalidate");
header('Cache-Control: pre-check=0, post-check=0, max-age=0');
header("Pragma: no-cache");
header("Expires: 0");
header("Content-Description: File Transfer");
header("Expires: Sat, 30 Dec 1990 07:07:07 GMT");
header("Content-Type: " . (string)$mimeType);
header("Content-Length: ". (string)$fileSize);
header('Content-Disposition: attachment; filename="'.$fileName.'"');
header("Content-Transfer-Encoding: binary\n");
echo $content;
exit;
}
} else {
// Clean the output buffer
ob_end_clean();
header("Cache-Control: public, must-revalidate");
header('Cache-Control: pre-check=0, post-check=0, max-age=0');
header("Pragma: no-cache");
header("Expires: 0");
header("Content-Description: File Transfer");
header("Expires: Sat, 30 Dec 1990 07:07:07 GMT");
header("Content-Type: " . (string)$mimeType);
// Problem with IE
if ($extLink == 0) {
header("Content-Length: ". (string)$fileSize);
}
header('Content-Disposition: attachment; filename="'.$fileName.'"');
header("Content-Transfer-Encoding: binary\n");
@readfile($fileOriginal);
exit;
}
}
return false;
}
}
?>