321 lines
12 KiB
PHP
Executable File
321 lines
12 KiB
PHP
Executable File
<?php
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/*
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* 2007-2015 PrestaShop
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*
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* NOTICE OF LICENSE
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*
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* This source file is subject to the Open Software License (OSL 3.0)
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* that is bundled with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://opensource.org/licenses/osl-3.0.php
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@prestashop.com so we can send you a copy immediately.
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*
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* DISCLAIMER
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*
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* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
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* versions in the future. If you wish to customize PrestaShop for your
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* needs please refer to http://www.prestashop.com for more information.
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*
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* @author PrestaShop SA <contact@prestashop.com>
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* @copyright 2007-2015 PrestaShop SA
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
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* International Registered Trademark & Property of PrestaShop SA
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*/
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class SmartyCustomCore extends Smarty
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{
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public function __construct()
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{
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parent::__construct();
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$this->template_class = 'Smarty_Custom_Template';
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}
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/**
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* Delete compiled template file (lazy delete if resource_name is not specified)
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*
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* @param string $resource_name template name
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* @param string $compile_id compile id
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* @param int $exp_time expiration time
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*
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* @return int number of template files deleted
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*/
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public function clearCompiledTemplate($resource_name = null, $compile_id = null, $exp_time = null)
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{
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if ($resource_name == null) {
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Db::getInstance()->execute('REPLACE INTO `'._DB_PREFIX_.'smarty_last_flush` (`type`, `last_flush`) VALUES (\'compile\', FROM_UNIXTIME('.time().'))');
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return 0;
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} else {
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return parent::clearCompiledTemplate($resource_name, $compile_id, $exp_time);
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}
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}
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/**
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* Mark all template files to be regenerated
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*
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* @param int $exp_time expiration time
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* @param string $type resource type
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*
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* @return int number of cache files which needs to be updated
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*/
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public function clearAllCache($exp_time = null, $type = null)
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{
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Db::getInstance()->execute('REPLACE INTO `'._DB_PREFIX_.'smarty_last_flush` (`type`, `last_flush`) VALUES (\'template\', FROM_UNIXTIME('.time().'))');
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return $this->delete_from_lazy_cache(null, null, null);
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}
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/**
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* Mark file to be regenerated for a specific template
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*
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* @param string $template_name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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* @param int $exp_time expiration time
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* @param string $type resource type
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*
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* @return int number of cache files which needs to be updated
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*/
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public function clearCache($template_name, $cache_id = null, $compile_id = null, $exp_time = null, $type = null)
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{
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return $this->delete_from_lazy_cache($template_name, $cache_id, $compile_id);
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}
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/**
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* Check the compile cache needs to be invalidated (multi front + local cache compatible)
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*/
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public function check_compile_cache_invalidation()
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{
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static $last_flush = null;
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if (!file_exists($this->getCompileDir().'last_flush')) {
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@touch($this->getCompileDir().'last_flush', time());
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} elseif (defined('_DB_PREFIX_')) {
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if ($last_flush === null) {
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$sql = 'SELECT UNIX_TIMESTAMP(last_flush) as last_flush FROM `'._DB_PREFIX_.'smarty_last_flush` WHERE type=\'compile\'';
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$last_flush = Db::getInstance()->getValue($sql, false);
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}
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if ((int)$last_flush && @filemtime($this->getCompileDir().'last_flush') < $last_flush) {
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@touch($this->getCompileDir().'last_flush', time());
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parent::clearCompiledTemplate();
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}
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}
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}
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/**
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* {@inheritDoc}
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*/
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public function fetch($template = null, $cache_id = null, $compile_id = null, $parent = null, $display = false, $merge_tpl_vars = true, $no_output_filter = false)
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{
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$this->check_compile_cache_invalidation();
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return parent::fetch($template, $cache_id, $compile_id, $parent, $display, $merge_tpl_vars, $no_output_filter);
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}
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/**
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* {@inheritDoc}
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*/
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public function createTemplate($template, $cache_id = null, $compile_id = null, $parent = null, $do_clone = true)
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{
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$this->check_compile_cache_invalidation();
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if ($this->caching) {
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$this->check_template_invalidation($template, $cache_id, $compile_id);
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return parent::createTemplate($template, $cache_id, $compile_id, $parent, $do_clone);
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} else {
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return parent::createTemplate($template, $cache_id, $compile_id, $parent, $do_clone);
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}
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}
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/**
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* Handle the lazy template cache invalidation
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*
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* @param string $template template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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*/
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public function check_template_invalidation($template, $cache_id, $compile_id)
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{
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static $last_flush = null;
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if (!file_exists($this->getCacheDir().'last_template_flush')) {
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@touch($this->getCacheDir().'last_template_flush', time());
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} elseif (defined('_DB_PREFIX_')) {
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if ($last_flush === null) {
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$sql = 'SELECT UNIX_TIMESTAMP(last_flush) as last_flush FROM `'._DB_PREFIX_.'smarty_last_flush` WHERE type=\'template\'';
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$last_flush = Db::getInstance()->getValue($sql, false);
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}
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if ((int)$last_flush && @filemtime($this->getCacheDir().'last_template_flush') < $last_flush) {
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@touch($this->getCacheDir().'last_template_flush', time());
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parent::clearAllCache();
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} else {
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if ($cache_id !== null && (is_object($cache_id) || is_array($cache_id))) {
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$cache_id = null;
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}
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if ($this->is_in_lazy_cache($template, $cache_id, $compile_id) === false) {
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// insert in cache before the effective cache creation to avoid nasty race condition
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$this->insert_in_lazy_cache($template, $cache_id, $compile_id);
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parent::clearCache($template, $cache_id, $compile_id);
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}
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}
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}
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}
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/**
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* Store the cache file path
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*
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* @param string $filepath cache file path
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* @param string $template template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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*/
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public function update_filepath($filepath, $template, $cache_id, $compile_id)
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{
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$template_md5 = md5($template);
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$sql = 'UPDATE `'._DB_PREFIX_.'smarty_lazy_cache`
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SET filepath=\''.pSQL($filepath).'\'
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WHERE `template_hash`=\''.pSQL($template_md5).'\'';
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$sql .= ' AND cache_id="'.pSQL((string)$cache_id).'"';
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if (strlen($compile_id) > 32) {
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$compile_id = md5($compile_id);
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}
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$sql .= ' AND compile_id="'.pSQL((string)$compile_id).'"';
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Db::getInstance()->execute($sql, false);
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}
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/**
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* Check if the current template is stored in the lazy cache
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* Entry in the lazy cache = no need to regenerate the template
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*
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* @param string $template template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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*
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* @return bool
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*/
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public function is_in_lazy_cache($template, $cache_id, $compile_id)
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{
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static $is_in_lazy_cache = array();
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$template_md5 = md5($template);
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if (strlen($compile_id) > 32) {
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$compile_id = md5($compile_id);
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}
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$key = md5($template_md5.'-'.$cache_id.'-'.$compile_id);
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if (isset($is_in_lazy_cache[$key])) {
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return $is_in_lazy_cache[$key];
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} else {
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$sql = 'SELECT UNIX_TIMESTAMP(last_update) as last_update, filepath FROM `'._DB_PREFIX_.'smarty_lazy_cache`
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WHERE `template_hash`=\''.pSQL($template_md5).'\'';
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$sql .= ' AND cache_id="'.pSQL((string)$cache_id).'"';
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$sql .= ' AND compile_id="'.pSQL((string)$compile_id).'"';
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$result = Db::getInstance()->getRow($sql, false);
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// If the filepath is not yet set, it means the cache update is in progress in another process.
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// In this case do not try to clear the cache again and tell to use the existing cache, if any
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if ($result !== false && $result['filepath'] == '') {
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// If the cache update is stalled for more than 1min, something should be wrong,
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// remove the entry from the lazy cache
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if ($result['last_update'] < time() - 60) {
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$this->delete_from_lazy_cache($template, $cache_id, $compile_id);
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}
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$return = true;
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} else {
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if ($result === false
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|| @filemtime($this->getCacheDir().$result['filepath']) < $result['last_update']) {
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$return = false;
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} else {
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$return = $result['filepath'];
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}
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}
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$is_in_lazy_cache[$key] = $return;
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}
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return $return;
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}
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/**
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* Insert the current template in the lazy cache
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*
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* @param string $template template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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*
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* @return bool
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*/
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public function insert_in_lazy_cache($template, $cache_id, $compile_id)
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{
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$template_md5 = md5($template);
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$sql = 'INSERT IGNORE INTO `'._DB_PREFIX_.'smarty_lazy_cache`
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(`template_hash`, `cache_id`, `compile_id`, `last_update`)
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VALUES (\''.pSQL($template_md5).'\'';
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$sql .= ',"'.pSQL((string)$cache_id).'"';
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if (strlen($compile_id) > 32) {
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$compile_id = md5($compile_id);
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}
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$sql .= ',"'.pSQL((string)$compile_id).'"';
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$sql .= ', FROM_UNIXTIME('.time().'))';
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return Db::getInstance()->execute($sql, false);
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}
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/**
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* Delete the current template from the lazy cache or the whole cache if no template name is given
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*
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* @param string $template template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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*
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* @return bool
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*/
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public function delete_from_lazy_cache($template, $cache_id, $compile_id)
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{
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if (!$template) {
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return Db::getInstance()->execute('TRUNCATE TABLE `'._DB_PREFIX_.'smarty_lazy_cache`', false);
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}
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$template_md5 = md5($template);
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$sql = 'DELETE FROM `'._DB_PREFIX_.'smarty_lazy_cache`
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WHERE template_hash=\''.pSQL($template_md5).'\'';
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if ($cache_id != null) {
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$sql .= ' AND cache_id LIKE "'.pSQL((string)$cache_id).'%"';
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}
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if ($compile_id != null) {
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if (strlen($compile_id) > 32) {
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$compile_id = md5($compile_id);
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}
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$sql .= ' AND compile_id="'.pSQL((string)$compile_id).'"';
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}
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Db::getInstance()->execute($sql, false);
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return Db::getInstance()->Affected_Rows();
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}
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}
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class Smarty_Custom_Template extends Smarty_Internal_Template
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{
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/** @var SmartyCustom|null */
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public $smarty = null;
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public function fetch($template = null, $cache_id = null, $compile_id = null, $parent = null, $display = false, $merge_tpl_vars = true, $no_output_filter = false)
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{
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if ($this->smarty->caching) {
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$tpl = parent::fetch($template, $cache_id, $compile_id, $parent, $display, $merge_tpl_vars, $no_output_filter);
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if (property_exists($this, 'cached')) {
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$filepath = str_replace($this->smarty->getCacheDir(), '', $this->cached->filepath);
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if ($this->smarty->is_in_lazy_cache($this->template_resource, $this->cache_id, $this->compile_id) != $filepath) {
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$this->smarty->update_filepath($filepath, $this->template_resource, $this->cache_id, $this->compile_id);
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}
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}
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return $tpl;
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} else {
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return parent::fetch($template, $cache_id, $compile_id, $parent, $display, $merge_tpl_vars, $no_output_filter);
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}
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}
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}
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