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<?php
/**
* @copyright Copyright (C) 2011 Simplify Your Web, Inc. All rights reserved.
* @license GNU General Public License version 3 or later; see LICENSE.txt
*/
namespace SYW\Library;
defined('_JEXEC') or die;
use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filesystem\File;
use Joomla\CMS\Filesystem\Folder;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Log\Log;
use Joomla\CMS\Uri\Uri;
class Cache
{
/**
* Get file's content
*/
public static function getFileContent($file)
{
$content = '';
if (function_exists('curl_version')) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $file);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$content = curl_exec($curl);
curl_close($curl);
if (!$content) {
Log::add('SYWCache:getFileContent() - Error in curl_exec', Log::ERROR, 'syw');
return false;
// try an ultimate recovery with file_get_contents ?
}
} else if (ini_get('allow_url_fopen')) {
$content = @file_get_contents($file);
if ($content === false) {
Log::add('SYWCache:getFileContent() - Error in file_get_contents', Log::ERROR, 'syw');
return false;
}
} else {
if (defined('JDEBUG') && JDEBUG) {
Log::add('SYWCache:getFileContent() - curl extension missing and allow_url_fopen unset', Log::WARNING, 'syw'); // avoid too much logging
}
return false;
}
//$content = ' some CSS here <html><head><title>Error 403 - Forbidden</title><head><body><h1>Error 403 - Forbidden</h1><p>You don\'t have permission to access ...</p></body></html> some CSS here';
// give feedback if there are access permission issues on the file
// test the content of <html>...</html>, not the whole file, in case id, class or width... have the 404, 403, ... values
$opening_pos = stripos($content, '<html');
if ($opening_pos !== false) {
$str = substr($content, $opening_pos); // in case it does not start with <html>
$closing_pos = stripos($str, '</html>');
$html_content = substr($str, 0, $closing_pos);
if (stripos($html_content, '403')) { // permission error
$lang = Factory::getLanguage();
$lang->load('lib_syw.sys', JPATH_SITE);
$file_array = explode('?', $file);
Factory::getApplication()->enqueueMessage(Text::sprintf('LIB_SYW_ERROR_403', $file_array[0]), 'error');
Log::add('SYWCache:getFileContent() - Error 403 in content - No access permissions for file '.$file_array[0], Log::ERROR, 'syw');
} else { // log the error
Log::add('SYWCache:getFileContent() - Error in content', Log::ERROR, 'syw');
}
return "\n"; // to return a 'clean' content - cannot return false or else will end up with the same errors in the file origin
}
return $content;
}
/**
* Get the cached file
*
* @param string $path common path to origin and target files (ex: modules/mod_latest_news/)
* @param string $file_origin (ex: style.css.php?x=3) - can be empty to create new file with just additional content
* @param string $file_target (ex: style.css)
* @param boolean $reset whether to reset the cached file or not
* @param string $additional_content string content to be appended to the file origin
*
* @return string filepath (the cached version if everything went well, the filepath origin otherwise)
*/
public static function getCachedFilePath($path, $file_origin, $file_target, $reset = true, $additional_content = '') {
Log::addLogger(array('text_file' => 'syw.errors.php'), Log::ALL, array('syw'));
$trouble_in_paradise = false;
$filepath_origin = $path.$file_origin;
$filepath_target = $path.$file_target;
if ($reset || !File::exists(JPATH_ROOT.'/'.$filepath_target)) {
$content = "\n"; // if empty, does not work
if (!empty($file_origin)) {
$file = htmlspecialchars_decode(URI::base().$filepath_origin); // replace & with & if any
$content = self::getFileContent($file);
}
if ($content != false) {
//if (ini_get('allow_url_fopen')) { // test not needed for file_put_contents
$result = @file_put_contents(JPATH_ROOT.'/'.$filepath_target, $content);
if ($result === false) {
$trouble_in_paradise = true;
Log::add('SYWCache:getCachedFilePath() - Error in file_put_contents', Log::ERROR, 'syw');
} else {
if (!empty($additional_content)) {
$result = @file_put_contents(JPATH_ROOT.'/'.$filepath_target, $additional_content, FILE_APPEND);
if ($result === false) {
$trouble_in_paradise = true;
Log::add('SYWCache:getCachedFilePath() - Error in file_put_contents when appending content', Log::ERROR, 'syw');
}
}
}
//} else {
//$trouble_in_paradise = true;
//JLog::add('SYWCache:getCachedFilePath() - allow_url_fopen is not set - cannot perform file_put_contents', JLog::ERROR, 'syw');
//}
} else {
$trouble_in_paradise = true;
if (defined('JDEBUG') && JDEBUG) {
Log::add('SYWCache:getCachedFilePath() - Cannot cache content', Log::WARNING, 'syw');
}
}
// } else {
// if (!JFile::exists(JPATH_ROOT.'/'.$filepath_target)) {
// $trouble_in_paradise = true;
// }
}
if ($trouble_in_paradise) {
if (empty($file_origin)) {
return '';
}
return URI::base(true).'/'.$filepath_origin;
} else {
return URI::base(true).'/'.$filepath_target;
}
}
/**
* Tests if a folder is ready to be used
* If not, creates the proper folders, adding index.html files inside them if needed
*
*/
public static function isFolderReady($root_path, $extra_path, $include_index = true)
{
$path = $root_path;
$folders = explode("/", $extra_path);
foreach ($folders as $folder) {
$path .= '/'.$folder;
if (!Folder::exists($path)) {
if (Folder::create($path)) {
if ($include_index) {
// no longer required in Joomla 4
}
} else {
return false;
}
}
}
return true;
}
public static function getTmpPath($tmp_path_param = 'default', $sub_directory = 'thumbnails')
{
$app = Factory::getApplication();
$lang = Factory::getLanguage();
$lang->load('lib_syw.sys', JPATH_SITE);
$tmp_path = str_replace(JPATH_ROOT.'/', '', $app->getCfg('tmp_path'));
if ($tmp_path_param == 'images') {
$media_params = ComponentHelper::getParams('com_media');
$images_path = $media_params->get('image_path', 'images');
if (self::isFolderReady(JPATH_ROOT.'/'.$images_path, $sub_directory)) {
$tmp_path = $images_path.'/'.$sub_directory;
} else {
$app->enqueueMessage(Text::sprintf('LIB_SYW_WARNING_COULDNOTCREATETMPFOLDERUSINGDEFAULT', $images_path.'/'.$sub_directory), 'warning');
}
} else if ($tmp_path_param == 'cache') {
if (self::isFolderReady(JPATH_SITE . '/media/cache', $sub_directory)) {
$tmp_path = 'media/cache/'.$sub_directory;
} else {
$app->enqueueMessage(Text::sprintf('LIB_SYW_WARNING_COULDNOTCREATETMPFOLDERUSINGDEFAULT', 'media/cache/'.$sub_directory), 'warning');
}
}
return $tmp_path;
}
}
?>