smarty/libs/sysplugins/smarty_internal_runtime_validatecompiled.php

<?php

/**
 * Runtime Methods decodeProperties
 *
 * @package    Smarty
 * @subpackage PluginsInternal
 * @author     Uwe Tews
 *
 **/
class Smarty_Internal_Runtime_ValidateCompiled
{
    /**
     * This function is executed automatically when a compiled or cached template file is included
     * - Decode saved properties from compiled template and cache files
     * - Check if compiled or cache file is valid
     *
     * @param  array $properties special template properties
     * @param  bool  $cache      flag if called from cache file
     *
     * @return bool  flag if compiled or cache file is valid
     */
    public function decodeProperties(Smarty_Internal_Template $tpl, $properties, $cache = false)
    {
        $is_valid = true;
        if (Smarty::SMARTY_VERSION != $properties['version']) {
            // new version must rebuild
            $is_valid = false;
        } elseif ($is_valid && !empty($properties['file_dependency']) &&
            ((!$cache && $tpl->smarty->compile_check) || $tpl->smarty->compile_check == 1)
        ) {
            // check file dependencies at compiled code
            foreach ($properties['file_dependency'] as $_file_to_check) {
                if ($_file_to_check[2] == 'file' || $_file_to_check[2] == 'extends' || $_file_to_check[2] == 'php') {
                    if ($tpl->source->filepath == $_file_to_check[0]) {
                        // do not recheck current template
                        continue;
                        //$mtime = $tpl->source->getTimeStamp();
                    } else {
                        // file and php types can be checked without loading the respective resource handlers
                        $mtime = is_file($_file_to_check[0]) ? filemtime($_file_to_check[0]) : false;
                    }
                } elseif ($_file_to_check[2] == 'string') {
                    continue;
                } else {
                    $handler = Smarty_Resource::load($tpl->smarty, $_file_to_check[2]);
                    if ($handler->checkTimestamps()) {
                        $source = Smarty_Template_Source::load($tpl, $tpl->smarty, $_file_to_check[ 0 ]);
                        $mtime = $source->getTimeStamp();
                    } else {
                        continue;
                    }
                }
                if (!$mtime || $mtime > $_file_to_check[1]) {
                    $is_valid = false;
                    break;
                }
            }
        }
        if ($cache) {
            // CACHING_LIFETIME_SAVED cache expiry has to be validated here since otherwise we'd define the unifunc
            if ($tpl->caching === Smarty::CACHING_LIFETIME_SAVED && $properties['cache_lifetime'] >= 0 &&
                (time() > ($tpl->cached->timestamp + $properties['cache_lifetime']))
            ) {
                $is_valid = false;
            }
            $tpl->cached->cache_lifetime = $properties['cache_lifetime'];
            $tpl->cached->valid = $is_valid;
            $resource = $tpl->cached;
        } else {
            $tpl->mustCompile = !$is_valid;
            $resource = $tpl->compiled;
            $resource->includes = isset($properties['includes']) ? $properties['includes'] : array();
        }
        if ($is_valid) {
            $resource->unifunc = $properties['unifunc'];
            $resource->has_nocache_code = $properties['has_nocache_code'];
            //            $tpl->compiled->nocache_hash = $properties['nocache_hash'];
            $resource->file_dependency = $properties['file_dependency'];
            if (isset($properties['tpl_function'])) {
                $tpl->tpl_function = $properties['tpl_function'];
            }
        }
        return $is_valid && !function_exists($properties['unifunc']);
    }
}