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145 lines
4.5 KiB
145 lines
4.5 KiB
<?php
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// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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// This script may only be included - so its better to die if called directly.
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if (strpos($_SERVER['SCRIPT_NAME'], basename(__FILE__)) !== false) {
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header('location: index.php');
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exit;
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}
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class AutoSaveLib
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{
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public function __construct()
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{
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$access = TikiLib::lib('access');
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$access->check_feature(['feature_ajax', 'ajax_autosave']);
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}
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/**
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* Save data into cache file
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*
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* @param string $id editor (textarea) id
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* @param string $data content to save
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* @param string $referer user:section:object id
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* @return number bytes that were written to the file, or false on failure
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*/
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public function auto_save($id, $data, $referer = '')
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{
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// auto_save_log($id, $referer, 'auto_save');
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$result = file_put_contents($this->auto_save_name($id, $referer), $data);
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return $result;
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}
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/**
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* Delete cache file
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*
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* @param string $id editor id
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* @param string $referer textarea specifier (user:section:item)
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* @return bool true on success or false on failure
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*/
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public function remove_save($id, $referer = '')
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{
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$referer = $this->ensureReferrer($referer);
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// auto_save_log($id, $referer, 'remove_save');
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$file_name = $this->auto_save_name($id, $referer);
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if (file_exists($file_name)) {
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$result = unlink($file_name);
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} else {
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$result = false;
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}
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return $result;
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}
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/**
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* Check if cache file exists
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*
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* @param string $id editor (textarea) id
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* @param string $referer user:section:object id
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* @return bool
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*/
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public function has_autosave($id, $referer = '')
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{
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return file_exists($this->auto_save_name($id, $this->ensureReferrer($referer)));
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}
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/**
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* Get the contents of an autosave cache file
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*
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* @param string $id editor (textarea) id
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* @param string $referer user:section:object id
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* @return bool|string
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*/
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public function get_autosave($id, $referer = '')
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{
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$file_name = $this->auto_save_name($id, $referer);
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if (file_exists($file_name)) {
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return file_get_contents($file_name);
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} else {
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return '';
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}
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}
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/**
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* Make sure all types of object get a referrer
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*
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* @param string $referer
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* @return string
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*/
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public function ensureReferrer($referer = '')
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{
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// should be page name, but use URI if not?
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if (empty($referer)) {
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global $section, $user, $tikilib;
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$referer .= empty($user) ? $tikilib->get_ip_address() : $user;
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$referer .= ':';
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if ($section == 'wiki page') {
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if (isset($_REQUEST['page'])) {
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$referer .= 'wiki_page:' . rawurlencode($_REQUEST['page']);
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}
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} elseif ($section == 'blogs') {
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if (isset($_REQUEST['postId'])) {
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$referer .= 'blog:' . $_REQUEST['postId'];
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}
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} else {
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$referer .= rawurlencode($_SERVER['REQUEST_URI']);
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}
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}
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return $referer;
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}
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/**
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* Get the name for the cache file
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*
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* @param string $id editor (textarea) id
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* @param string $referer user:section:object id
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* @param bool $only_md5
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* @return string
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*/
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private function auto_save_name($id, $referer = '', $only_md5 = false)
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{
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global $user;
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$referer = preg_replace('/(\?|\&)noautosave=y/', '', $this->ensureReferrer($referer));
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$referer = rawurldecode($referer); // this is needed to ensure consistency whether coming from js or php
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return ($only_md5 ? '' : 'temp/cache/auto_save-') . md5("$user:$referer:$id");
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}
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/**
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* Dev routine to save a log of autosave events
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*
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* @param $id
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* @param string $referer
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* @param string $action
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*/
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private function auto_save_log($id, $referer = '', $action = '')
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{
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global $user;
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file_put_contents('temp/cache/auto_save-log-' . ($this->auto_save_name($id, $referer, true)), $user . ' : ' . $this->ensureReferrer($referer) . " : $id : $action\n", FILE_APPEND);
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}
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}
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